CN101316141B - Band width distribution method, device, communication apparatus and system - Google Patents
Band width distribution method, device, communication apparatus and system Download PDFInfo
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- CN101316141B CN101316141B CN2007100746676A CN200710074667A CN101316141B CN 101316141 B CN101316141 B CN 101316141B CN 2007100746676 A CN2007100746676 A CN 2007100746676A CN 200710074667 A CN200710074667 A CN 200710074667A CN 101316141 B CN101316141 B CN 101316141B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
- H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
- H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
- H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
- H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
- H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
- H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0282—WDM tree architectures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
- H04L47/762—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
- H04L47/765—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the end-points
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Abstract
The embodiment of the invention relates to a bandwidth allocation method, a device and a communication system, wherein, the communication system includes at least one central office terminal communication equipment and one or more remote terminal communication equipment, at least one central office terminal communication equipment receives the up data frame transmitted by one or more remote terminal communication equipment; then the received up data frame is resolved to determine the bandwidth allocation mode of the corresponding remote terminal communication equipment; then the link bandwidth of the corresponding remote terminal communication equipment and/or the ratio between the up link bandwidth and the down link bandwidth are/is distributed according to the determinate bandwidth allocation mode. The corresponding remote terminal communication equipment transmits the up data according to the link bandwidth and/or the ratio between the up link bandwidth and the down link bandwidth distributed by the central office terminal communication equipment. With the proposal provided by the invention, the bandwidth allocation mode can be dynamically adjusted according to the demands of the remote terminal communication equipment and/or central office terminal communication equipment, which is more flexible.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of bandwidth allocation methods, device, communication equipment and communication system.
Background technology
Recently, the demand of wideband switch-in business is increased sharply, in order to satisfy the demand that these high bandwidths, big capacity insert, people have selected light incoming communication network.Yet the price comparison of some Primary Components in the optical communication network is expensive; People seek the approach of building a cost-effective optic network; Research to passive optical network (PON) also heats up rapidly, passive optical network (APON), broadband passive optic network (BPON), the passive optical network (EPON) based on Ethernet, G bit passive optic network (GPON), Wavelenght division multiplexing passive optical network (WDM-PON) and optical code division multiple access passive optical network (OCDMA-PON) etc. based on ATM have occurred.
In general; Passive optical network is such system: use trunk fiber to be connected as professional provider's central office (CO) between the on-site distant-end node in the neighbourhood of user with being arranged on; And light subscriber unit (the optical networktermination/unit of distant-end node and the professional consumption side of conduct; ONT/ONU) then connect,, significantly reduced administrative structure and maintenance cost like this because the distant-end node placement is passive optical component through distribute type optical fiber.
In common WDM-PON system shown in Figure 1; The a plurality of wavelength that provided by local side CO are transferred to distant-end node RN through single fiber; Branch wave energy through distant-end node RN; Each wavelength X i is transferred to each ONUi, and corresponding ONU can only use the wavelength of distributing to it to send upstream data and downlink data receiving.
Particularly; In the WDM-PON of remodulates downlink data system, ONU utilizes optical line terminal, and (optical line termination, the downstream signal light that OLT) sends are with the upstream data modulation wherein; This wherein has two kinds of implementations; A part has been modulated downlink data in the downstream signal light that a kind of OLT of being issues, and another part is kept for ONU modulation upstream data, and its Frame is as shown in Figure 2.Another kind is all to have modulated downlink data in the downstream signal light that issues of OLT; ONT/ONU utilizes the principle of modulation depth to modulate upstream data above that again; Because the modulation depth of upstream data and downlink data is different, OLT still can identify the up-downgoing data, and its Frame is as shown in Figure 3.
In the remodulates WDM-PON system of the up-downgoing shared bandwidth shown in Fig. 2, because the up-downgoing data are shared bandwidths, so the upstream bandwidth of ONU must decide by OLT, to guarantee the normal transmission of data.Therefore, the algorithm and the realization of many research institutions and enterprise's extensive concern allocated bandwidth.
Summary of the invention
The embodiment of the invention provides a kind of bandwidth allocation methods, and this method is applicable to that this method comprises into one or more apparatus for remote communication distribute bandwidth:
Receive the uplink data frames that one or more apparatus for remote communication send, comprise the information of the indication bandwidth method of salary distribution in the said uplink data frames;
The uplink data frames that parsing receives; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of the said indication bandwidth method of salary distribution, said allocated bandwidth mode comprises forecasting type allocated bandwidth mode and nonanticipating type allocated bandwidth mode;
Allocated bandwidth mode according to confirming is the ratio of the apparatus for remote communication distribute links bandwidth and/or the uplink downlink bandwidth of said correspondence, comprising:
Under forecasting type allocated bandwidth mode, the flow of adding up the uplink data frames of said apparatus for remote communication transmission obtains bandwidth availability ratio, confirms the link bandwidth of said apparatus for remote communication and/or the ratio of uplink downlink bandwidth according to said bandwidth availability ratio;
Under nonanticipating type allocated bandwidth mode; From the uplink data frames that said apparatus for remote communication sends, resolve and obtain bandwidth or the congestion situation that request that said apparatus for remote communication reports distributes, the link bandwidth that bandwidth of distributing according to the request that reports or congestion situation are confirmed said apparatus for remote communication and/or the ratio of uplink downlink bandwidth.
The embodiment of the invention also provides a kind of allocated bandwidth device, and this device comprises:
Processing module; Be used to resolve the information that uplink data frames that one or more apparatus for remote communication send obtains the indication bandwidth method of salary distribution; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of resolving the indication bandwidth method of salary distribution that obtains, said allocated bandwidth mode comprises: forecasting type allocated bandwidth mode and nonanticipating type allocated bandwidth mode;
Authorization module is used under the allocated bandwidth mode that said processing module is confirmed the ratio for the apparatus for remote communication distribute links bandwidth of said correspondence and/or definite uplink downlink bandwidth.
Wherein, said authorization module comprises:
First authorization module; Be used under forecasting type allocated bandwidth mode; Add up the flow of the uplink data frames of said apparatus for remote communication transmission, obtain bandwidth availability ratio, confirm the link bandwidth of said apparatus for remote communication and/or the ratio of uplink downlink bandwidth according to said bandwidth availability ratio;
Second authorization module; Be used under nonanticipating type allocated bandwidth mode; From said uplink data frames, obtain the bandwidth that congestion situation that said apparatus for remote communication reports or request distribute, be the ratio of apparatus for remote communication distribute links bandwidth and/or definite uplink downlink bandwidth of said correspondence
The embodiment of the invention also provides a kind of communication system, and this system comprises at least one local side communication equipment, one or more apparatus for remote communication,
Said one or more apparatus for remote communication is used for comprising indication bandwidth method of salary distribution information uplink data frames to said at least one local side communication equipment transmission;
Said at least one local side communication equipment; Be used to receive the uplink data frames that one or more apparatus for remote communication send; The uplink data frames that parsing receives obtains said indication bandwidth method of salary distribution information; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth; Under the allocated bandwidth mode of confirming, confirm link bandwidth and/or the ratio of uplink downlink bandwidth of the apparatus for remote communication of said correspondence, and the ratio of said link bandwidth and/or uplink downlink bandwidth is handed down to the apparatus for remote communication of said correspondence
Wherein, said at least one local side communication equipment comprises aforesaid allocated bandwidth device.
The embodiment of the invention also provides a kind of communication equipment, comprising:
Receiving system is used to receive the uplink data frames that one or more apparatus for remote communication send, and comprises the information of the indication bandwidth method of salary distribution in the said uplink data frames;
Processing unit; Be used to resolve the uplink data frames that said receiving system receives; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of the said indication bandwidth method of salary distribution, said allocated bandwidth mode comprises: forecasting type allocated bandwidth mode and nonanticipating type allocated bandwidth mode;
Authorization device is used for confirming according to the allocated bandwidth mode that said processing unit is confirmed link bandwidth and/or the ratio of uplink downlink bandwidth of the apparatus for remote communication of said correspondence;
Dispensing device sends to the ratio of said link bandwidth and/or uplink downlink bandwidth the apparatus for remote communication of said correspondence;
Wherein, said authorization device comprises:
First authorization device; Be used under forecasting type allocated bandwidth mode; The flow of adding up the uplink data frames of said apparatus for remote communication transmission obtains bandwidth availability ratio, confirms the link bandwidth of said apparatus for remote communication and/or the ratio of uplink downlink bandwidth according to said bandwidth availability ratio;
Second authorization device; Be used under nonanticipating type allocated bandwidth mode; From said uplink data frames, obtain the bandwidth that congestion situation that said apparatus for remote communication reports or request distribute, be the ratio of apparatus for remote communication distribute links bandwidth and/or definite uplink downlink bandwidth of said correspondence.
According to the above-mentioned scheme that provides; Can distribute for a plurality of apparatus for remote communication provide various bandwidth simultaneously according to the needs and/or the treatment situation of local side communication equipment and/or apparatus for remote communication, can also dynamically adjust the allocated bandwidth mode according to the needs and/or the treatment situation of local side communication equipment and/or apparatus for remote communication.
Description of drawings
Fig. 1 is traditional WDM-PON system;
Fig. 2 is traditional OLT up-downgoing data frame structure sketch map;
Fig. 3 is traditional OLT up-downgoing data frame structure sketch map;
Fig. 4 is the allocated bandwidth mechanism schematic flow sheet of embodiment of the invention nonanticipating type;
Fig. 5 is the allocated bandwidth mechanism schematic flow sheet of embodiment of the invention forecasting type;
Fig. 6 is the up-downgoing data frame structure of the embodiment of the invention;
Fig. 7 is the allocated bandwidth apparatus structure sketch map of the embodiment of the invention;
Shown in Figure 8 is the communication system sketch map of the embodiment of the invention.
Embodiment
For ease of to understanding of the present invention, will combine instance that concrete implementation procedure of the present invention is described below.
The embodiment of the invention provides a kind of bandwidth allocation methods; This method is applicable to and is one or more apparatus for remote communication distribution bandwidth; This method comprises: receive the uplink data frames that one or more apparatus for remote communication send, comprise the information of the indication bandwidth method of salary distribution in the said uplink data frames; The uplink data frames that parsing receives is confirmed as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of the said indication bandwidth method of salary distribution; Allocated bandwidth mode according to confirming is the ratio of the apparatus for remote communication distribute links bandwidth and/or the uplink downlink bandwidth of said correspondence.The method that adopts the embodiment of the invention to provide; This adaptive bandwidth distribution mechanism can be according to the allocated bandwidth mode of the mandate of consulting between local side communication equipment and the apparatus for remote communication to confirm; Perhaps needs and/or the treatment situation according to local side communication equipment and/or apparatus for remote communication distributes for a plurality of apparatus for remote communication provide various bandwidth simultaneously, can also dynamically adjust the allocated bandwidth mode according to the needs and/or the treatment situation of local side communication equipment and/or apparatus for remote communication.
Wherein, Scheme according to the embodiment of the invention; Between local side communication equipment and the apparatus for remote communication through consultation mode confirm a kind of allocated bandwidth mode, can adopt negotiation mode in advance, for example; Apparatus for remote communication can be in registration process, with the local side communication equipment agreed bandwidth method of salary distribution; Also can in data transmission procedure, hold consultation; As in data transmission procedure; Apparatus for remote communication can be encapsulated in notice local side communication equipment in the uplink data frames with the mode of oneself supporting (as reporting mode or the non-mode that reports), and the local side communication equipment also can be encapsulated in the mode of oneself supporting (like prediction or nonanticipating mode) notify apparatus for remote communication in the downlink data frame.
Wherein, Because a local side communication equipment can insert a plurality of apparatus for remote communication usually; If local side communication equipment and apparatus for remote communication are to adopt the mode of consulting in advance to decide through consultation the allocated bandwidth mode; Then in data transmission procedure; The local side communication equipment can adopt multiple mode to confirm the allocated bandwidth mode of apparatus for remote communication, for example can find the corresponding allocated bandwidth mode of this apparatus for remote communication through identification apparatus for remote communication (like the address of identification apparatus for remote communication, the identification presentation of apparatus for remote communication, the wavelength that apparatus for remote communication sends data etc.); Perhaps can the allocated bandwidth negotiation result be encapsulated in the uplink data frames of local side communication equipment and apparatus for remote communication; The local side communication equipment receives from Frame, to resolve after the uplink data frames and obtains the allocated bandwidth negotiation result; Confirm as the allocated bandwidth mode of the distribution bandwidth of said apparatus for remote communication, for said apparatus for remote communication distributes bandwidth.
Wherein, in the communication system that the embodiment of the invention provides, the local side communication equipment can provide the method for salary distribution of forecasting type and nonanticipating type, and apparatus for remote communication can provide type and the non-mode that reports type of reporting.The method of salary distribution of local side communication equipment forecasting type comprises: the data traffic historical record that can add up apparatus for remote communication; Predict the bandwidth that apparatus for remote communication needs according to historical record (like bandwidth availability ratio); Apparatus for remote communication can not need report the bandwidth of request and/or the congestion state of oneself under this mode, and is lower to the requirement of apparatus for remote communication.The method of salary distribution of local side communication equipment nonanticipating type needs apparatus for remote communication to report an allocated bandwidth reference data; Like the bandwidth of apparatus for remote communication request or the congestion situation of apparatus for remote communication etc., confirm to license to the bandwidth of apparatus for remote communication according to these allocated bandwidth reference datas.
Wherein, the local side communication equipment can obtain the data traffic historical record of apparatus for remote communication through the uplink data frames flow (like the data of reception buffer) that the monitoring apparatus for remote communication sends.Apparatus for remote communication also can send the buffer memory congestion condition through the monitoring local terminal, and congestion condition is reported the local side communication equipment.
Wherein, The mandate bandwidth (ratio of uplink bandwidth value or uplink downlink bandwidth) that the local side communication equipment will obtain according to the method for above-mentioned allocated bandwidth is encapsulated in and is handed down to apparatus for remote communication in the downlink data frame, the mandate bandwidth for transmission upstream data that apparatus for remote communication utilizes the local side communication equipment to issue.Wherein, if apparatus for remote communication receives is the ratio of uplink downlink, the uplink bandwidth that also need become to authorize according to this rate conversion.
The bandwidth allocation methods that the embodiment of the invention provides is not only applicable to the WDM-PON system, and is applicable to various PON system, like ATM-PON, BPON and GPON etc., also is applicable to the communication of various two-way link allocated bandwidth.
The concrete implementation procedure of the technical scheme that the embodiment of the invention provides is described below in conjunction with Fig. 4 or Fig. 5.Wherein, optical line terminal OLT (local side communication equipment) is the flow chart that light subscriber unit ONU/ONT (apparatus for remote communication) distributes bandwidth among Fig. 4 and Fig. 5.
Shown in Figure 4 is an instance of the allocated bandwidth mode of nonanticipating type, and idiographic flow is following:
S401: optical line terminal OLT constantly is sent as light modulated to ONU/ONT;
S402:ONU/ONT confirms whether oneself will register or initialization again;
S403:, carried ONU/ONT in the said register requirement and adopted allocated bandwidth pattern (the pattern indication bit of reporting is 1) if ONU/ONT will register again or initialization then send register requirement to OLT;
S404:OLT receives the register requirement of sending from ONU/ONT, ONU/ONT is registered, and be initialization speed of this ONU/ONT distribution;
S405: after succeeding in registration; OLT sends the response message that succeeds in registration to ONU/ONT; Wherein, Succeed in registration and carried initialization speed in the response message, the mode of operation (the predictive mode indication bit is 0) that also provides OLT to support to ONU/ONT is returned the allocated bandwidth pattern (the pattern indication bit of reporting is 1) that ONU/ONT provides simultaneously;
Mandate bandwidth (being initialization speed when the initialization) transmit ascending data that S406:ONU/ONT utilizes OLT to provide; Wherein, ONU/ONT is encapsulated in the allocated bandwidth pattern (the predictive mode indication bit is 0) of OLT and the allocated bandwidth pattern (the pattern indication bit of reporting is 1) of ONU/ONT in the uplink data frames, and ONU/ONT also is encapsulated in congested report in the uplink data frames;
S407:OLT receives the uplink data frames from ONU/ONT; The uplink data frames that parsing receives; Confirm the allocated bandwidth mode according to the allocated bandwidth pattern of OLT and the allocated bandwidth pattern of ONU/ONT, distribute bandwidth for this ONU/ONT with the allocated bandwidth mode of confirming;
In the present example, OLT distributes bandwidth with nonanticipating type allocated bandwidth mode, and OLT calculates the bandwidth that ONU/ONT sends data next time according to the congestion situation that ONU/ONT reports.
S408:OLT as licensing to ONU/ONT uplink bandwidth next time, is encapsulated in the bandwidth that calculates and is handed down to ONU/ONT in the downlink data frame with the uplink bandwidth of authorizing; Wherein, in downlink data frame, also comprise the allocated bandwidth pattern (the predictive mode indication bit is 0) of OLT and the allocated bandwidth pattern (the pattern indication bit of reporting is 1) of ONU.
Wherein, OLT can change into the bandwidth that calculates the ratio (promptly authorizing the ratio of bandwidth and this downlink data) of uplink downlink bandwidth, the ratio of uplink downlink bandwidth is encapsulated in sends to ONU/ONT in the downlink data frame.The uplink bandwidth value that ONU/ONT need become to authorize with the rate conversion that receives is with transmit ascending data.
Shown in Figure 5 is an instance of the allocated bandwidth mode of forecasting type, and idiographic flow is following:
S501: optical line terminal OLT constantly is sent as light modulated to ONU/ONT;
S502:ONU/ONT confirms whether oneself will register or initialization again;
S503:, carried ONU/ONT in the said register requirement and adopted allocated bandwidth pattern (the pattern indication bit of reporting is 0) if ONU/ONT will register again or initialization then send register requirement to OLT;
S504:OLT receives the register requirement of sending from ONU/ONT, ONU/ONT is registered, and be initialization speed of this ONU/ONT distribution;
S505: after succeeding in registration; OLT sends the response message that succeeds in registration to ONU/ONT; Wherein, Succeed in registration and carried initialization speed in the response message, the mode of operation (the predictive mode indication bit is 1) that also provides OLT to support to ONU/ONT is returned the allocated bandwidth pattern (the pattern indication bit of reporting is 0) that ONU/ONT provides simultaneously; Wherein, initialization speed, predictive mode indication bit and report pattern indication also can not be encapsulated in the response message that succeeds in registration are sent in addition.
Mandate bandwidth (being initialization speed when the initialization) transmit ascending data that S506:ONU/ONT utilizes OLT to provide; Wherein, ONU/ONT is encapsulated in the allocated bandwidth pattern (the predictive mode indication bit is 1) of OLT and the allocated bandwidth pattern (the pattern indication bit of reporting is 0) of ONU/ONT in the uplink data frames;
Wherein, in this step, ONU/ONT also can be encapsulated in the uplink data frames congested report for the OLT reference, also can not encapsulate congested report.
S507:OLT receives the uplink data frames from ONU/ONT; The uplink data frames that parsing receives; Confirm the allocated bandwidth mode according to the allocated bandwidth pattern of OLT and the allocated bandwidth pattern of ONU/ONT, distribute bandwidth for this ONU/ONT with the allocated bandwidth mode of confirming;
In the present example; OLT distributes bandwidth with forecasting type allocated bandwidth mode; OLT is through the flow of monitoring uplink data frames, and the record monitoring result is sent the historical record of upstream data and predicted a bandwidth through this ONU; For example can calculate the bandwidth that ONU/ONT sends data next time according to bandwidth availability ratio according to historical record statistics bandwidth availability ratio in the past.
S508:OLT as licensing to ONU/ONT uplink bandwidth next time, is encapsulated in the bandwidth that calculates and is handed down to ONU/ONT in the downlink data frame with the uplink bandwidth of authorizing; Wherein, in downlink data frame, also comprise the allocated bandwidth pattern (the predictive mode indication bit is 1) of OLT and the allocated bandwidth pattern (the pattern indication bit of reporting is 0) of ONU.
Wherein, OLT can change into the bandwidth that calculates the ratio (promptly authorizing the ratio of bandwidth and this downlink data) of uplink downlink bandwidth, the ratio of uplink downlink bandwidth is encapsulated in sends to ONU/ONT in the downlink data frame.The uplink bandwidth value that ONU/ONT need become to authorize with the rate conversion that receives is with transmit ascending data.
Wherein, the allocated bandwidth pattern comprises OLT mode of operation and ONU mode of operation, OLT and ONU allocated bandwidth pattern matching table in the system of the embodiment of the invention as shown in table 1.When ONU for reporting the type allocation model, ONU needs congestion situation is reported OLT, this congestion situation can be encapsulated in the specific expense of uplink data frames.At this moment, when OLT is generally nonanticipating type allocation model, also can be the forecasting type allocation model, if the forecasting type allocation model then OLT will ignore the congestion situation that ONU reports.
When ONU is the non-type mode of operation that reports, ONU need not congestion situation is reported OLT.At this moment, when OLT is necessary for the forecasting type mode of operation, otherwise system can't operate as normal.
The allocated bandwidth pattern of table 1 OLT and ONU
Wherein:
" ignore " and be meant when OLT is operated in the forecasting type allocated bandwidth, do not handle for congested the ignoring that ONU reports.
" * " expression is when being the non-type mode of operation that reports as ONU, and when OLT is necessary for the forecasting type mode of operation, otherwise system can't operate as normal.
Wherein, in an embodiment of the present invention, downlink data frame can (Field Programmable Gate Array FPGA) produces and sends by OLT side FPGA chip; Uplink data frames can be produced and sent by ONU side FPGA chip (FPGA).
Data frame structure sketch map referring to the embodiment of the invention shown in Figure 6.
Below, further specify the concrete implementation procedure of the embodiment of the invention in conjunction with the practical application scene.
1, OLT forecasting type, the non-type that reports of ONU
(1) OLT detects from the uplink data frames that receives ONU1 in distributing to the bandwidth 10Mbits of ONU1, for some reason (for example ONU1 is relatively idle, send data less) 8Mbits has only used up;
(2) OLT is according to calculating to such an extent that preceding 1 take turns that to authorize bandwidth availability ratio be 80% (8/10) in the step (1); OLT end is preserved with reference to preceding 2 taking turns the upstream bandwidth utilance of taking turns (what specifically will be reviewed takes turns and can decide in its sole discretion) with preceding 3 in the upstream bandwidth utilance historical record forward again; For example they are respectively to be 87%; 93%, promptly the ONU1 continuous 3 upstream bandwidth utilance of taking turns is all descending, and the maximum range of decrease is 7%; The upstream bandwidth utilance that can predict epicycle ONU1 so is the prediction algorithm of 73% (80%-7%); Determine that this upstream bandwidth that licenses to ONU1 is 7.3Mbits (10 * 73%), can this value be write " mandate bandwidth " territory in the downlink data frame, send to ONU1 with downlink data frame then.Perhaps, if the downlink data bandwidth of this OLT is 10Mbits, being converted into the upstream and downstream bandwidth ratio so is 0.73:1, and this value is write " mandate bandwidth " territory in the downlink data frame, sends to ONU1 with downlink data frame then;
(3) ONU1 receives the downlink data frame that OLT sends, and therefrom extracts the mandate bandwidth, if
The upstream and downstream bandwidth ratio is 0.73:1 for example, is converted into upstream bandwidth 7.3Mbits, if authorize bandwidth value, then need not convert, and upstream data is inserted in the upstream data district, sends it back OLT then.
2, OLT nonanticipating type, ONU report type
(1) to read the upstream data that ONU2 will send be 9.5Mbits in the congested report territory of OLT from the uplink data frames that receives ONU2; Again based on the current busy situation of OLT; If can satisfy the transmission request of ONU2; The upstream bandwidth of then confirming to license to ONU2 is 9.5Mbits, and this value is write " upstream and downstream bandwidth ratio " territory in the downlink data frame, sends to ONU2 with downlink data frame then.Perhaps, if the downlink data bandwidth of this OLT is 10Mbits, being converted into the upstream and downstream bandwidth ratio so is 0.95:1, and this value is write " mandate bandwidth " territory in the downlink data frame, sends to ONU2 with downlink data frame then;
(2) ONU2 receives the downlink data frame that OLT sends, and therefrom extracts the mandate bandwidth, if upstream and downstream bandwidth ratio 0.95:1 for example is converted into upstream bandwidth 9.5Mbits; If mandate bandwidth value; Then need not convert, upstream data inserted in the upstream data district of uplink data frames, simultaneously; The size of data that next time will send in the transmission buffering with ONU2 writes in " congested report " territory in the uplink data frames, sends it back OLT then.
Shown in Figure 7 is the forecasting type allocated bandwidth apparatus structure sketch map of the embodiment of the invention.Allocated bandwidth device 700 is applied to comprise the communication system of at least one local side communication equipment and one or more apparatus for remote communication, and this device comprises:
Wherein, processing module 720 comprises:
Resolution unit 722 is used to resolve the information that said uplink data frames obtains the said indication bandwidth method of salary distribution;
First confirms unit 724, is used for the allocated bandwidth mode that is resolved to said mandate is confirmed as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth; And/or
Second confirms unit 726; Be used for obtaining the allocated bandwidth pattern of said apparatus for remote communication support and/or allocated bandwidth pattern and the allocated bandwidth pattern of communication stored equipment support in advance and the corresponding relation of allocated bandwidth mode of local side communication equipment support, confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to parsing.
Wherein, authorization module 740 comprises: first authorization module 742 and second authorization module,
First authorization module 742, the allocated bandwidth mode that is used for confirming according to said processing module and the monitoring result of said monitoring means are the ratio of the apparatus for remote communication distribute links bandwidth and/or the uplink downlink bandwidth of said correspondence.
Second authorization module 744, the bandwidth that congestion situation that allocated bandwidth mode that is used for confirming according to said processing module and said apparatus for remote communication report or request distribute is the ratio of the apparatus for remote communication distribute links bandwidth and/or the uplink downlink bandwidth of said correspondence.
In addition, the allocated bandwidth device can also comprise negotiation element 760, is used to consult the allocated bandwidth mode between said at least one local side communication equipment and the one or more apparatus for remote communication.
Referring to a kind of communication system of the embodiment of the invention shown in Figure 8, this optical network system comprises at least one local side communication equipment (OLT) 800, is coupled to one or more apparatus for remote communication (ONU/ONT) 900 of this at least one local side communication equipment, wherein:
Local side communication equipment (OLT) 800; Receive the uplink data frames that one or more apparatus for remote communication 900 send; The uplink data frames that parsing receives is confirmed as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth; Allocated bandwidth mode according to confirming is the ratio of the apparatus for remote communication distribute links bandwidth and/or the uplink downlink bandwidth of said correspondence, and with the link bandwidth that distributes/or the ratio of uplink downlink bandwidth be handed down to the apparatus for remote communication 900 of said correspondence.
Wherein, local side communication equipment 800 comprises: bandwidth allocation module 700, receiving system 820 and dispensing device 840.
For example; Referring to Fig. 7 and shown in Figure 8; Be arranged in local side communication equipment (OLT) 800 parsing modules 722 and resolve the uplink data frames that receiving system 820 receives from apparatus for remote communication 900; The analysis result that first definite unit 724 receives parsing modules 722 confirms to receive the allocated bandwidth mode of mandate; Perhaps second confirms that unit 726 receives the allocated bandwidth pattern that allocated bandwidth pattern that the apparatus for remote communication in the analysis result of parsing modules 722 supports and/or local side communication equipment are supported, the allocated bandwidth pattern of supporting according to communication stored equipment in advance and the corresponding relation (example is as shown in table 1) of allocated bandwidth mode are confirmed as the allocated bandwidth mode of these apparatus for remote communication 900 distribution bandwidth; If first confirms that the allocated bandwidth mode that unit or second definite unit are confirmed is a forecasting type allocated bandwidth mode; Then first authorization module, 742 statistics receiving systems 820 receive the data of X unit (byte or piece); Authorized data traffic X that obtains according to statistics and the last time of preserving bandwidth Y unit (byte or piece) data; Can calculate and authorize bandwidth availability ratio last time:
provide this in view of the above to authorize bandwidth be Y ' unit (byte or piece) data, and send to apparatus for remote communication 900 through dispensing device 840.
Wherein, a kind of apparatus for remote communication (ONU/ONT) 900 comprises: dispensing device 920, receiving system 940, processing unit 960, bandwidth control apparatus 980;
Receiving system 960; Be used to receive the downlink data frame of the ratio of link bandwidth that comprises mandate that said local side communication equipment sends and/or uplink downlink bandwidth; Wherein, the ratio of the link bandwidth of said mandate and/or uplink downlink bandwidth is according to the link bandwidth that obtains under the definite allocated bandwidth mode of the information of the said indication bandwidth method of salary distribution and/or the ratio of uplink downlink bandwidth;
Apparatus for remote communication (ONU/ONT) 900 comprises:
Receiving system 940; Be used to receive that local side communication equipment 800 sends comprises the downlink data frame of the ratio of the link bandwidth that licenses to apparatus for remote communication 900 and/or uplink downlink bandwidth; Wherein, Wherein, the ratio of the link bandwidth of said mandate and/or uplink downlink bandwidth is according to the link bandwidth that obtains under the definite allocated bandwidth mode of the information of the said indication bandwidth method of salary distribution and/or the ratio of uplink downlink bandwidth in the said downlink data frame;
Adopt the above-mentioned scheme that provides, can dynamically adjust the allocated bandwidth mode, have more flexibility according to the needs of apparatus for remote communication and/or local side communication equipment.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. a bandwidth allocation methods is characterized in that, this method is applicable to that this method comprises into one or more apparatus for remote communication distribute bandwidth:
Receive the uplink data frames that one or more apparatus for remote communication send, comprise the information of the indication bandwidth method of salary distribution in the said uplink data frames;
The uplink data frames that parsing receives; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of the said indication bandwidth method of salary distribution, said allocated bandwidth mode comprises forecasting type allocated bandwidth mode and nonanticipating type allocated bandwidth mode;
Allocated bandwidth mode according to confirming is the ratio of the apparatus for remote communication distribute links bandwidth and/or the uplink downlink bandwidth of said correspondence, comprising:
Under forecasting type allocated bandwidth mode, the flow of adding up the uplink data frames of said apparatus for remote communication transmission obtains bandwidth availability ratio, confirms the link bandwidth of said apparatus for remote communication and/or the ratio of uplink downlink bandwidth according to said bandwidth availability ratio;
Under nonanticipating type allocated bandwidth mode; From the uplink data frames that said apparatus for remote communication sends, resolve and obtain bandwidth or the congestion situation that request that said apparatus for remote communication reports distributes, the link bandwidth that bandwidth of distributing according to the request that reports or congestion situation are confirmed said apparatus for remote communication and/or the ratio of uplink downlink bandwidth.
2. method according to claim 1 is characterized in that, said method also comprises: in said one or more apparatus for remote communication registrations or initialization procedure, with said one or more apparatus for remote communication agreed bandwidth methods of salary distribution.
3. method according to claim 1 and 2; It is characterized in that; The information of the said indication bandwidth method of salary distribution comprises following one or more combinations: the allocated bandwidth mode of mandate, the allocated bandwidth pattern that apparatus for remote communication is supported, the allocated bandwidth pattern that the local side communication equipment is supported.
4. method according to claim 3 is characterized in that, the uplink data frames that said parsing receives is confirmed as corresponding apparatus for remote communication and distributed the step of the allocated bandwidth mode of bandwidth specifically to comprise:
The uplink data frames that parsing receives if from the uplink data frames that receives, resolve the allocated bandwidth mode that obtains authorizing, is then confirmed as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth with the allocated bandwidth mode of said mandate.
5. method according to claim 3 is characterized in that, said method also comprises: stored allocated bandwidth pattern and allocated bandwidth mode corresponding relation that apparatus for remote communication and local side communication equipment are supported in advance;
The uplink data frames that then said parsing receives, confirm as corresponding apparatus for remote communication and distribute the step of the allocated bandwidth mode of bandwidth specifically to comprise:
The uplink data frames that parsing receives if parsing obtains the allocated bandwidth pattern of apparatus for remote communication support and/or the allocated bandwidth pattern that the local side communication equipment is supported from the uplink data frames that receives, is confirmed the allocated bandwidth mode according to said corresponding relation.
6. an allocated bandwidth device is characterized in that, this device comprises:
Processing module; Be used to resolve the information that uplink data frames that one or more apparatus for remote communication send obtains the indication bandwidth method of salary distribution; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of resolving the indication bandwidth method of salary distribution that obtains, said allocated bandwidth mode comprises: forecasting type allocated bandwidth mode and nonanticipating type allocated bandwidth mode;
Authorization module is used under the allocated bandwidth mode that said processing module is confirmed the ratio for the apparatus for remote communication distribute links bandwidth of said correspondence and/or definite uplink downlink bandwidth;
Wherein, said authorization module comprises:
First authorization module; Be used under forecasting type allocated bandwidth mode; Add up the flow of the uplink data frames of said apparatus for remote communication transmission, obtain bandwidth availability ratio, confirm the link bandwidth of said apparatus for remote communication and/or the ratio of uplink downlink bandwidth according to said bandwidth availability ratio;
Second authorization module; Be used under nonanticipating type allocated bandwidth mode; From said uplink data frames, obtain the bandwidth that congestion situation that said apparatus for remote communication reports or request distribute, be the ratio of apparatus for remote communication distribute links bandwidth and/or definite uplink downlink bandwidth of said correspondence.
7. device according to claim 6 is characterized in that,
The information of the said indication bandwidth method of salary distribution comprises following one or more combinations: the allocated bandwidth mode of mandate, the allocated bandwidth pattern that apparatus for remote communication is supported, the allocated bandwidth pattern that the local side communication equipment is supported;
Said processing module comprises:
Resolution unit is used to resolve the information that said uplink data frames obtains the said indication bandwidth method of salary distribution;
First confirms the unit, is used for the allocated bandwidth mode that is resolved to said mandate is confirmed as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth; And/or
Second confirms the unit; Be used for obtaining allocated bandwidth pattern and/or the allocated bandwidth pattern of local side communication equipment support and apparatus for remote communication and the allocated bandwidth pattern of local side communication equipment support and the corresponding relation of allocated bandwidth mode of storage in advance that said apparatus for remote communication is supported, confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to parsing.
8. device according to claim 6 is characterized in that, said device also comprises:
Negotiation element is used to consult the allocated bandwidth mode between at least one local side communication equipment and the one or more apparatus for remote communication.
9. a communication system is characterized in that, this system comprises at least one local side communication equipment, one or more apparatus for remote communication,
Said one or more apparatus for remote communication is used for sending the uplink data frames that comprises indication bandwidth method of salary distribution information to said at least one local side communication equipment;
Said at least one local side communication equipment; Be used to receive the uplink data frames that one or more apparatus for remote communication send; The uplink data frames that parsing receives obtains said indication bandwidth method of salary distribution information; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth; Under the allocated bandwidth mode of confirming, confirm link bandwidth and/or the ratio of uplink downlink bandwidth of the apparatus for remote communication of said correspondence, and the ratio of said link bandwidth and/or uplink downlink bandwidth is handed down to the apparatus for remote communication of said correspondence;
Wherein, said at least one local side communication equipment comprises like each described allocated bandwidth device among the claim 6-8.
10. a communication equipment is characterized in that, comprising:
Receiving system is used to receive the uplink data frames that one or more apparatus for remote communication send, and comprises the information of the indication bandwidth method of salary distribution in the said uplink data frames;
Processing unit; Be used to resolve the uplink data frames that said receiving system receives; Confirm as the allocated bandwidth mode that corresponding apparatus for remote communication distributes bandwidth according to the information of the said indication bandwidth method of salary distribution, said allocated bandwidth mode comprises: forecasting type allocated bandwidth mode and nonanticipating type allocated bandwidth mode;
Authorization device is used for confirming according to the allocated bandwidth mode that said processing unit is confirmed link bandwidth and/or the ratio of uplink downlink bandwidth of the apparatus for remote communication of said correspondence.
Dispensing device sends to the ratio of said link bandwidth and/or uplink downlink bandwidth the apparatus for remote communication of said correspondence;
Wherein, said authorization device comprises:
First authorization device; Be used under forecasting type allocated bandwidth mode; The flow of adding up the uplink data frames of said apparatus for remote communication transmission obtains bandwidth availability ratio, confirms the link bandwidth of said apparatus for remote communication and/or the ratio of uplink downlink bandwidth according to said bandwidth availability ratio;
Second authorization device; Be used under nonanticipating type allocated bandwidth mode; From said uplink data frames, obtain the bandwidth that congestion situation that said apparatus for remote communication reports or request distribute, be the ratio of apparatus for remote communication distribute links bandwidth and/or definite uplink downlink bandwidth of said correspondence.
11. equipment according to claim 10; It is characterized in that; The information of the said indication bandwidth method of salary distribution comprises following one or more combinations: the allocated bandwidth mode of mandate, the allocated bandwidth pattern that apparatus for remote communication is supported, the allocated bandwidth pattern that the local side communication equipment is supported.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007100746676A CN101316141B (en) | 2007-05-29 | 2007-05-29 | Band width distribution method, device, communication apparatus and system |
| PCT/CN2008/071093 WO2008145061A1 (en) | 2007-05-29 | 2008-05-27 | Method, device, communication apparatus and communication system for bandwidth allocation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100746676A CN101316141B (en) | 2007-05-29 | 2007-05-29 | Band width distribution method, device, communication apparatus and system |
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| CN101316141B true CN101316141B (en) | 2012-11-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101729939B (en) * | 2008-10-31 | 2012-12-05 | 中兴通讯股份有限公司 | Method and system for distributing passive optical network bandwidth |
| CN102209280A (en) * | 2010-03-31 | 2011-10-05 | 中兴通讯股份有限公司 | Uplink data processing method used in passive optical network and passive optical network |
| CN102447978A (en) * | 2010-10-11 | 2012-05-09 | 高通创锐讯通讯科技(上海)有限公司 | Dynamic bandwidth allocation method based on Report in EPON (Ethernet Passive Optical Network) system |
| CN102291632A (en) * | 2011-10-10 | 2011-12-21 | 华为技术有限公司 | Bandwidth sharing method, device and system |
| CN103685072B (en) * | 2013-11-27 | 2016-11-02 | 中国电子科技集团公司第三十研究所 | A kind of method that network traffics are quickly distributed |
| CN109844725B (en) * | 2016-07-01 | 2023-07-25 | 英特尔公司 | Asymmetric channels in point-to-point interconnects |
| CN106411764B (en) * | 2016-08-29 | 2020-01-14 | 浙江宇视科技有限公司 | Dynamic adjustment method for bandwidth configuration and base station equipment |
| CN106781360A (en) * | 2016-11-25 | 2017-05-31 | 瑞斯康微电子（深圳）有限公司 | Data transmission method and repeater based on LORA radio communications |
| CN108881967A (en) * | 2018-08-01 | 2018-11-23 | 广发证券股份有限公司 | A kind of video method for uploading, device and equipment based on machine learning |
| CN109818881B (en) * | 2019-03-19 | 2022-09-27 | 网宿科技股份有限公司 | CDN bandwidth scheduling method, acquisition and scheduling server and storage medium |
| CN114500287B (en) * | 2021-12-30 | 2023-09-22 | 广州趣丸网络科技有限公司 | Intelligent allocation method and device for bandwidth resources |
| WO2024039422A1 (en) * | 2022-08-15 | 2024-02-22 | Arris Enterprises Llc | Steering of bandwidth based upon temporal usage |
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| KR20030073473A (en) * | 2002-03-11 | 2003-09-19 | 삼성전자주식회사 | Method for onu late registration method in giga bit ethernet passive optical network and thereof ethernet frame structure |
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| CN1285186C (en) * | 2004-04-14 | 2006-11-15 | 烽火通信科技股份有限公司 | Ascending link bandwidth dynamic distribution method and appts. based on ethernet passive optical network |
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| KR20030073473A (en) * | 2002-03-11 | 2003-09-19 | 삼성전자주식회사 | Method for onu late registration method in giga bit ethernet passive optical network and thereof ethernet frame structure |
| CN1767692A (en) * | 2005-11-18 | 2006-05-03 | 润欣通信技术(上海)有限公司 | Ethernet passive optical network multi service bandwidth distributing system |
| CN1777066A (en) * | 2005-12-02 | 2006-05-24 | 润欣通信技术(上海)有限公司 | Ethernet passive optical network multi-service dynamic broadband distributing method |
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