CN101998190A - Method for consultation in passive optical network, passive optical network system and network elements - Google Patents
Method for consultation in passive optical network, passive optical network system and network elements Download PDFInfo
- Publication number
- CN101998190A CN101998190A CN2009101675037A CN200910167503A CN101998190A CN 101998190 A CN101998190 A CN 101998190A CN 2009101675037 A CN2009101675037 A CN 2009101675037A CN 200910167503 A CN200910167503 A CN 200910167503A CN 101998190 A CN101998190 A CN 101998190A
- Authority
- CN
- China
- Prior art keywords
- onu
- olt
- ability
- message
- work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/0816—Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0084—Quality of service aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0088—Signalling aspects
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a method for consultation in a passive optical network, a passive optical network system and network elements, wherein the method comprises the following steps: an optical line terminal (OLT) sends a service ability supported by the OLT to an optical network unit (ONU); the ONU configures the working parameters of the ONU according to the received service ability supported by the OLT; the ONU sends a service ability supported by the ONU to the OLT; and the OLT configures the working parameters of the OLT according to the received service ability supported by the ONU. Through the method of the invention, the effect of improving the efficiency of communication between the OLT and the ONU is achieved.
Description
Technical field
The present invention relates to the communications field, in particular to the middle negotiation method of a kind of EPON (PassiveOptical Network abbreviates PON as) and passive optical network and network element.
Background technology
Gigabit passive optical network (Gigabit-Capable Passive Optical Network, abbreviating GPON as) technology is important techniques branch in the EPON, with other PON technology type seemingly, GPON also is a kind of passive light access technology that adopts some the multidrop topology structure.
GPON is by optical line terminal (the Optical Line Terminal of office's side, abbreviate OLT as), optical network unit (the Optical Network Unit of user side, abbreviate ONU as) and Optical Distribution Network (Optical Distributio Network, abbreviate ODN as) form, adopt the network configuration of point usually to multiple spot.ODN is made up of Passive Optical Components such as monomode fiber, optical branching device, optical connectors, for the physical connection between OLT and the ONU provides light-transmitting medium.
In order to realize the part management function of OLT to ONU, defined physical layer operations management maintenance (Physical layer Operations in the correlation technique, Administration andMaintenance, be called for short PLOAM) passage, GPON utilizes PLOAM channel transfer PLOAM message, realizes the management to transmission convergence layer, comprise that ONU activates, the foundation of ONU management control channel, encryption configuration, key management etc.
GPON regulation OLT sends a PLOAM message can only for an ONU a downlink frame, and an ONU can only send a PLOAM message at the most in a uplink burst time slot.When connecting a plurality of ONU in the PON system, the efficient of this transmission PLOAM message approach is lower, and when the ONU registration with when switching to redundant path, a large amount of PLOAM needs to send, this inefficient performance this moment particularly evident.At this situation, allow OLT in a downlink frame, to send a plurality of PLOAM message in the correlation technique, but do not determine that OLT sends the number of PLOAM message for same ONU in a downlink frame.Do not determine that an ONU can send the number of PLOAM message in a uplink burst time slot yet.Because OLT and ONU do not have to consult can handle each other the ability of PLOAM message in a frame, so OLT does not know to send to the reasonable number of the PLOAM message of same ONU in a downlink frame, ONU does not know to send to the reasonable number of the PLOAM message of same OLT yet in a uplink burst time slot.
In addition, in the GPON system, have a guard time (Guard time) between the upstream bandwidth that OLT distributes for two ONU respectively, the physical layer overhead of the uplink frame of ONU (PLOu) part comprises preamble field (Preamble) and delimits territory (Delimiter) etc.Guard time, Preamble and the Delimiter of appropriate length should select in the GPON system, to promote the cost performance of whole system.Longer Guard time, Preamble and Delimiter can cause the waste of ONU upstream bandwidth, but, short Guard time, Preamble have relatively high expectations to light emitting devices, the light receiving element of OLT, ONU, can increase the cost of OLT, ONU, and long Delimiter is of value to the correct demarcation of OLT.Based on the consideration to above-mentioned factor, the length of Guard time, Delimiter that the length of the Preamble that the OLT of different manufacturers supports and ONU support can be different.Therefore, OLT and ONU need consult above-mentioned parameter.
At last, the GPON system should select a suitable maximum upstream bandwidth to distribute number to promote the cost performance of whole system, maximum upstream bandwidth distributes number excessive, then the PLOu number in the uplink may increase, cause the waste of upstream bandwidth, and can increase the needed hardware resource of ONU.Maximum upstream bandwidth distributes that number is too small to cause the distribution structure in each downlink frame less, is unfavorable for satisfying the low delay requirement of uplink business.Therefore OLT and ONU need consult to select a suitable maximum upstream bandwidth to distribute number.
More than the OLT of three aspects and the ONU ability to work supported in GPON or XGPON system, need to consult, the XGPON system is based on the GPON standard definition.Registration in the correlation technique activates and mainly may further comprise the steps:
1, ONU intercepts descending GTC (GPON TransmissionConvergence, the GPON Transmission Convergence) frame of OLT transmission and obtains frame synchronization;
2, ONU intercepts Upstream_Overhead (perhaps Extended_Burst_Length) message that OLT periodically sends and obtains parameter configuration in the message;
3, the ONU of unregistered activation intercepts the SN_Request (serial number request) that OLT sends, and replys Serial_Number_ONU (ONU sequence number) message (carrying the sequence number of ONU in this message) to OLT after receiving SN_Request;
4, distribute ONU-ID by sending Assign_ONU-ID (distributing the ONU sign) message to this ONU to this ONU after OLT receives the Serial_Number_ONU message that certain ONU sends and obtains corresponding sequence number;
5, OLT sends Ranging_Request (distance measurement request) to this ONU, begins this ONU is found range;
6, after this ONU receives Ranging_Request, still to OLT response Serial_Number_ONU message;
7, after OLT receives the Serial_Number_ONU message of this ONU transmission, calculate range finding EqD (Equalization Delay as a result, isostatic lag) and will find range as a result that EqD sends to this ONU by Ranging_Time (range finding time) message, finish ONU and register activation.
Above-mentioned registration activation does not comprise that OLT and ONU consult the step of working method or ability to work mutually, and the method for consulting working method or ability to work about OLT and ONU in the GPON system mutually is not provided in the existing technology yet.
At not comprising in the correlation technique that OLT and ONU consult the step of working method or ability to work mutually, the problem of consulting the method for working method or ability to work about OLT and ONU in the GPON system mutually is not provided yet, does not propose effective solution at present as yet.
Summary of the invention
At not comprising in the correlation technique that OLT and ONU consult the step of working method or ability to work mutually, do not provide about OLT and ONU in the GPON system yet and consult the method for working method or ability to work mutually and cause the problem that OLT and ONU communication efficiency reduce and propose the present invention, for this reason, main purpose of the present invention is to provide negotiation method in a kind of EPON, to address the above problem.
To achieve these goals, according to an aspect of the present invention, provide negotiation method in a kind of EPON.
Comprise according to negotiation method in the EPON of the present invention: Optical Network Terminal OLT sends to optical network unit ONU with the ability to work of self supporting, ONU disposes the running parameter of self according to the ability to work that the OLT that receives supports; ONU sends to OLT with the ability to work of self supporting, OLT disposes the running parameter of self according to the ability to work that the ONU that receives supports.
Preferably, before OLT sent to ONU with the ability to work of self supporting, this method also comprised: ONU request OLT sends the ability to work that OLT supports; Before ONU sent to OLT with the ability to work of self supporting, this method also comprised: OLT request ONU sends the ability to work that ONU supports.
Preferably, ONU one of can be in the following manner the ability to work supported of request OLT: a newly-built message, message are used to the ability to work of asking OLT to support; Increase the byte of existing message; Utilize the reservation territory of partial bytes in existing message or the uplink frame; OLT is the ability to work supported of request ONU one of in the following manner: a newly-built message, message are used to the ability to work of asking ONU to support; Increase the byte of existing message; Utilize the reservation territory of partial bytes in existing message or the downlink frame.
Preferably, OLT ability to work that self is supported sends to ONU and one of comprises in the following manner and to send: a newly-built message, message are used to send the ability to work that OLT supports; Increase the byte of existing message; Utilize the reservation territory of partial bytes in existing message or the downlink frame, ONU sends to OLT with the ability to work of self supporting and one of comprises in the following manner and to send: a newly-built message, message are used to send the ability to work that ONU supports; Increase the byte of existing message; Utilize the reservation territory of partial bytes in existing message or the uplink frame.
Preferably, above-mentioned ability to work one of can comprise in following: the ability of handling physical layer operations management maintenance message; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Preferably, above-mentioned running parameter one of can comprise in following: the number of the physical layer operations management maintenance message of transmission; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Preferably, above-mentioned existing message can comprise: physical layer operations management maintenance message.
To achieve these goals, according to a further aspect in the invention, provide a kind of passive optical network.
This passive optical network comprises: Optical Network Terminal OLT and optical network unit ONU, and wherein, OLT and ONU send the ability to work that self supports mutually, and OLT and ONU dispose the running parameter of self according to the ability to work that the other side who receives supports.
Preferably, above-mentioned ability to work comprise following in one of at least: the ability of handling physical layer operations management maintenance message; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Preferably, above-mentioned running parameter comprise following in one of at least: the number of the physical layer operations management maintenance message of transmission; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
To achieve these goals, according to a further aspect in the invention, provide a kind of EPON network element.
This EPON network element comprises: sending module is used to send the ability to work of self supporting; Receiver module is used to receive the ability to work that other network elements are supported; Configuration module is used for disposing the parameter of self according to the ability to work of other network element supports that receive.
Preferably, sending module utilizes one of following mode to send the ability to work of self supporting: a newly-built message, message are used to send the ability to work that network element is supported; Increase the byte of existing message; Utilize the reservation territory of partial bytes in existing message, uplink frame and the downlink frame.
One of below preferably, sending module specifically is used for sending: the ability of handling physical layer operations management maintenance message; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Preferably, above-mentioned running parameter comprise following in one of at least: the number of the physical layer operations management maintenance message of transmission; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
By the present invention, adopt OLT that the ability to work of self supporting is sent to ONU, ONU disposes the running parameter of self according to the ability to work that the OLT that receives supports; ONU sends to OLT with the ability to work of self supporting, the ability to work that OLT supports according to the ONU that receives disposes the method for the running parameter of self, solved and do not comprised in the correlation technique that OLT and ONU consult the step of working method or ability to work mutually, do not provide about OLT and ONU in the GPON system yet and consult the method for working method or ability to work mutually and the problem that causes OLT and ONU communication efficiency to reduce, and then reached the effect that improves communication efficiency between OLT and the ONU.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to negotiation method in the EPON of the embodiment of the invention;
Fig. 2 is the schematic diagram according to the EPON network element of the embodiment of the invention.
Embodiment
Functional overview
Consider and do not comprise in the correlation technique that OLT and ONU consult the step of working method or ability to work mutually, do not provide about OLT and ONU in the GPON system yet and consult the method for working method or ability to work mutually and cause OLT and ONU communication efficiency to reduce, the embodiment of the invention provides negotiation method in the EPON, this method comprises: OLT sends to ONU with the ability to work of self supporting, ONU disposes the running parameter of self according to the ability to work that the OLT that receives supports; ONU sends to OLT with the ability to work of self supporting, OLT disposes the running parameter of self according to the ability to work that the ONU that receives supports.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Method embodiment
According to embodiments of the invention, provide negotiation method in a kind of EPON.
Fig. 1 is the schematic diagram according to negotiation method in the EPON of the embodiment of the invention.
As shown in Figure 1, this method comprises that following step S102 is to step S104:
Step S102, OLT sends to ONU with the ability to work of self supporting, and ONU disposes the running parameter of self according to the ability to work that the OLT that receives supports;
Step S104, ONU sends to OLT with the ability to work of self supporting, and OLT disposes the running parameter of self according to the ability to work that the ONU that receives supports.
Wherein, the order of two steps can change more than.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
OLT can transmit by following mode to working method and/or the ability to work self supported that ONU sends:
1, OLT transmits by the reservation territory (bit 6-0) of Flags in the allocated bandwidth structure (AllocationStructure) in downlink frame PCBd territory;
2, OLT transmits by the reservation position bit31 in the IDENT territory of downlink frame;
3, OLT transmits by second 12bit (the former 12bit that is used to transmit ATM length) in the PLEND territory of downlink frame;
4, OLT is by increasing the byte transmission of existing PLOAM message, be to have increased a byte in the Upstream_overhead parameter message for example in the PLOAM message that comprises up expense (Upstream_Overhead), a byte that increases is the 13rd byte, as shown in table 1, OLT utilizes this byte transmission;
Table 1Upstream_Overhead message format
5, OLT transmits by newly-built PLOAM message, and newly-built PLOAM message is as shown in table 2:
| Byte number | Content | Describe |
| 1 | 11111111 | Broadcast to all ONU transmissions |
| 2 | 10000000 | Show that type of message is " Ability_OLT " |
| 3 | LLLLLLLL | Working method and/or ability to work 1 that OLT supports |
| 4 | MMMMMMMM | Working method and/or ability to work 2 that OLT supports |
| 5 | NNNNNNNN | Working method and/or ability to work 3 that OLT supports |
| 6-12 | Undefined | |
| 13 | CRC |
Table 2Ability_OLT message format
ONU can transmit by following mode to working method and/or the ability to work self supported that OLT sends:
1, ONU transmits by the bit3-2 of the 12nd byte in the PLOAM message (message is called Serial_Number_ONU) that comprises Serial Number information;
2, ONU also can pass through the bit4-0 transmission in the IND territory of uplink frame;
3, ONU is by increasing the byte transmission of existing PLOAM message, be to have increased a byte in the Serial_Number_ONU message for example in the PLOAM message that comprises sequence number information (Serial Number), a byte that increases is the 13rd byte, as shown in table 3, ONU utilizes this byte transmission.
Table 3, the Serial_Number_ONU message format
4, ONU transmits by newly-built PLOAM message, and newly-built PLOAM message is as shown in table 4:
| Byte number | Content | Describe |
| 1 | ONU-ID | This ONU-ID is assigned to this ONU |
| 2 | 10000001 | Show that type of message is " Ability_ONU " |
| 3 | LLLLLLLL | Working method and/or ability to work 1 that ONU supports |
| 4 | MMMMMMMM | Working method and/or ability to work 2 that ONU supports |
| 5 | NNNNNNNN | Working method and/or ability to work 3 that ONU supports |
| 6-12 | Undefined | |
| 13 | CRC |
Table 4, the Ability_ONU message format
OLT and ONU can adopt the combination negotiation working method and the ability to work each other of above-mentioned the whole bag of tricks.
Embodiment one
OLT and ONU initiatively send the working method self supported and/or the registration Activiation method of ability to work to the other side.
In the GPON system, in ONU registration activation, OLT and ONU consult to deal with separately the ability of PLOAM message, comprising:
1, the maximum number of OLT manageable PLOAM message in a uplink burst time slot,
2, the maximum number of ONU manageable PLOAM message in a downlink frame.The registration activation of ONU mainly comprises following step:
(1) ONU intercepts descending GTC (GPON TransmissionConvergence, the GPON Transmission Convergence) frame of OLT transmission and obtains frame synchronization;
(2) ONU intercepts and obtains the parameter configuration that OLT periodically sends;
When (3) OLT sent SN_Request to ONU, OLT passed to the maximum number of the following information of ONU: OLT manageable PLOAM message in a uplink burst time slot by the reservation territory of Flags in the allocated bandwidth structure (Allocation Structure) in downlink frame PCBd territory.When the value of the bit1-0 of Flags is 00, represent that this ONU maximum in a uplink burst time slot can send a PLOAM message; When the value of the bit1-0 of Flags is 01, represent that this ONU maximum in a uplink burst time slot can send two PLOAM message; When the value of the bit1-0 of Flags is 10, represent that this ONU maximum in a uplink burst time slot can send three PLOAM message; When the value of the bit1-0 of Flags is 11, represent that this ONU maximum in a uplink burst time slot can send four PLOAM message.
After the ONU of unregistered activation listens to the above-mentioned SN_Request of OLT transmission, ONU storage OLT handles the ability parameter of PLOAM message, ONU replys Serial_Number_ONU message to OLT then, carry the sequence number of ONU in this message, the bit3-2 of 12nd byte of ONU by comprising Serial_Number_ONU message passes to the following information of OLT: the maximum number of current ONU manageable PLOAM message in a downlink frame.When the value of the bit3-2 position of the 12nd byte of Serial_Number_ONU was 00, expression OLT can send a PLOAM message in a downlink frame this ONU maximum; When the value of the bit3-2 position of the lowest byte of Serial_Number_ONU was 01, expression OLT can send two PLOAM message in a downlink frame this ONU maximum; When the value of the bit3-2 position of the lowest byte of Serial_Number_ONU was 10, expression OLT can send three PLOAM message in a downlink frame this ONU maximum; When the value of the bit3-2 position of the lowest byte of Serial_Number_ONU was 11, expression OLT can send four PLOAM message in a downlink frame this ONU maximum.
(4) after OLT receives the Serial_Number_ONU message that certain ONU sends and obtains corresponding sequence number, the PLOAM message handling ability parameter of OLT storage ONU, and pass through to send Assign_ONU-ID (distributing the ONU sign) message to this ONU and distribute ONU-ID to this ONU, enter ranging process;
(5) OLT sends Ranging_Request (distance measurement request) to this ONU, begins this ONU is found range;
(6) after this ONU receives Ranging_Request, still to OLT response Serial_Number_ONU message;
(7) after OLT receives the Serial_Number_ONU message of this ONU transmission, calculate range finding EqD (Equalization Delay as a result, isostatic lag) and will find range as a result that EqD sends to this ONU by Ranging_Time (range finding time) message, finish ONU and register activation.
In the present embodiment, OLT and ONU have consulted the PLOAM message handling ability that supports one another in the registration activation stage of ONU, and do not change the flow process that the ONU registration activates.After OLT and ONU negotiations process were finished, when OLT sent PLOAM message in downlink frame each ONU, OLT sent PLOAM message according to above-mentioned negotiation result; When OLT allowed ONU to send PLOAM message in the uplink burst time slot, ONU sent PLOAM message according to above-mentioned negotiation result.
Present embodiment has illustrated four kinds of state description utilizing two bits, and OLT and the multipotency of ONU are handled above-mentioned four PLOAM message, also can change the definition of the one of four states of two bits, for example 00 expression can be handled 2 PLOAM message, 01 expression can be handled 4 PLOAM message, 10 expressions can be handled 6 PLOAM message, and 11 expressions can be handled 8 PLOAM message.Also can increase bit number and represent the PLOAM message handling ability of more state description OLT and ONU.
Present embodiment has provided OLT and has transmitted the PLOAM message handling ability of self by the reservation territory of Flags in the allocated bandwidth structure (Allocation Structure) in downlink frame PCBd territory.OLT also can be by downlink frame the reservation position bit31 in IDENT territory transmit the PLOAM message handling ability of self, for example, when the value of the bit31 in IDENT territory is 0, represent that this ONU maximum in a uplink burst time slot can send a PLOAM message; When the value of the bit31 of IDENT is 1, represent that this ONU maximum in a uplink burst time slot can send two PLOAM message and (also can change the definition of two states of a bit; For another example, when the value of the bit31 in IDENT territory is 0, represent that this ONU maximum in a uplink burst time slot can send to be no more than five PLOAM message; When the value of the bit31 of IDENT is 1, represent that this ONU maximum in a uplink burst time slot can send five PLOAM message).OLT also can be by downlink frame second 12bit territory in PLEND territory in bit9-8 transmit the PLOAM message handling ability of self, when the value of the bit9-8 of PLEND is 00, represent that this ONU maximum in a uplink burst time slot can send a PLOAM message; When the value of the bit9-8 of PLEND is 01, represent that this ONU uply intactly sends out that maximum can send two PLOAM message in the time slot at one; When the value of the bit9-8 of PLEND is 10, represent that this ONU maximum in a uplink burst time slot can send three PLOAM message; When the value of the bit9-8 of PLEND is 11, represent that this ONU maximum in a uplink burst time slot can send four PLOAM message (also can change the definition of the one of four states of two bits).OLT also can transmit the PLOAM message handling ability of self supporting by the partial bytes of Extended_Burst_Length message.
Present embodiment has provided ONU and has transmitted the PLOAM message handling ability of self by the 12nd byte of Serial_Number_ONU information.The bit4-0 that ONU also can pass through the IND territory of uplink frame transmits the PLOAM message handling ability of self, if ONU utilizes the bit0 in the IND territory of uplink frame to transmit the PLOAM message handling ability of self, when the value of the bit0 position of IND was 0, expression OLT can send a PLOAM message in a downlink frame this ONU maximum; When the value of the bit0 position of IND is 1, expression OLT can send two PLOAM message in a downlink frame this ONU maximum (also can change the definition of two states of a bit, such as, when the value of the bit0 position of IND was 0, expression OLT can send in a downlink frame this ONU maximum and is no more than five PLOAM message; When the value of the bit0 position of IND was 1, expression OLT can send five PLOAM message in a downlink frame this ONU maximum).If ONU utilizes the bit2-0 in the IND territory of uplink frame to transmit the PLOAM message handling ability of self herein, then can represent the PLOAM message handling ability of more multi-level ONU, can represent the PLOAM message handling ability of ONU self better.
OLT also can utilize other reservation territories of downlink frame or PLOAM message initiatively to send the PLOAM message handling ability of self supporting to ONU, and ONU also can utilize other reservation territories actives of uplink frame or PLOAM message to send PLOAM message handling abilities of self supporting to OLT.
OLT also can increase a territory and transmit the PLOAM message handling ability of self in downlink frame; ONU also can increase a territory and transmit the PLOAM message handling ability of self in uplink frame.
Utilize the method for present embodiment, OLT and ONU also can consult each parameter in the burst mode expense (Burst Mode Overhead) of GPON system uplink frame, for example guard time (Guard time), leading (Preamble) and delimit (Delimiter); OLT and ONU also can consult maximum upstream bandwidth and distribute number etc.
Embodiment two
If the planning of ITU normal structure increases the PLOAM message byte number of PON system, the byte that OLT and ONU can be in the registration activation of ONU increase in by PLOAM message is transmitted the PLOAM message handling ability of self supporting, the registration activation of ONU mainly comprises following step:
(1) ONU intercepts descending GTC (GPON TransmissionConvergence, the GPON Transmission Convergence) frame of OLT transmission and obtains frame synchronization;
(2) OLT periodically sends Upstream_Overhead message, OLT has increased a byte in last byte front of above-mentioned message, the form of the Upstream_overhead message after the variation is as shown in table 5, a byte that increases is the 13rd byte, and this byte is used to transmit ONU allows the maximum number of transmission PLOAM message in a uplink burst time slot information.After ONU receives above-mentioned Upstream_overhead message, according to the running parameter of the content configuration self of above-mentioned each byte of message.
Table 5, the Upstream_Overhead message format
(3) ONU of unregistered activation intercepts the SN_Request (serial number request) that OLT sends, reply Serial_Number_ONU (ONU sequence number) message (carrying the sequence number of ONU in this message) to OLT after receiving SN_Request, ONU has increased a byte in last byte front of above-mentioned message, the form of the Serial_Number_ONU message after the variation is as shown in table 6, a byte that increases is the 13rd byte, and this byte is used to transmit OLT and allows to give above-mentioned ONU to send the information of the maximum number of PLOAM message in a downlink frame.
Table 6Serial_Number_ONU message format
(4) after OLT receives the Serial_Number_ONU message that certain ONU sends and obtains corresponding sequence number, according to the running parameter of the content configuration self of above-mentioned message.OLT distributes ONU-ID by sending Assign_ONU-ID (distributing the ONU sign) message to this ONU to this ONU, enters ranging process;
(5) OLT sends Ranging_Request (distance measurement request) to this ONU, begins this ONU is found range;
(6) after this ONU receives Ranging_Request, still to OLT response Serial_Number_ONU message;
(7) after OLT receives the Serial_Number_ONU message of this ONU transmission, calculate range finding EqD (Equalization Delay as a result, isostatic lag) and will find range as a result that EqD sends to this ONU by Ranging_Time (range finding time) message, finish ONU and register activation.
Utilize the method for present embodiment, OLT and ONU also can consult each parameter in the burst mode expense (Burst Mode Overhead) of GPON system uplink frame, for example guard time (Guard time), leading (Preamble) and delimit (Delimiter); OLT and ONU also can consult maximum upstream bandwidth and distribute number etc.
Embodiment three
OLT and ONU also can transmit the PLOAM message handling ability of self by increasing a new PLOAM message in the registration activation of ONU.The registration of ONU activates and mainly may further comprise the steps:
ONU intercepts descending GTC (GPON TransmissionConvergence, the GPON Transmission Convergence) frame of OLT transmission and obtains frame synchronization;
The PLOAM message of the Upstream_Overhead by name that OLT periodically sends, ONU intercepts and obtains the parameter configuration in the Upstream_Overhead message;
OLT is when sending SN_Request to ONU, in downlink frame, send the PLOAM message that name as shown in table 7 is called PLOAM_Ability_OLT, this message is used for OLT and transmits self PLOAM message handling ability, the content of first byte of above-mentioned message is for receiving the ONU-ID of this PLOAM message, the value of ONU-ID is 11111111, represents that this PLOAM message is to issue the broadcast of all ONU; The type of second this PLOAM message of byte representation is PLOAM_Ability_OLT, i.e. the PLOAM message handling ability of OLT; The 3rd byte representation ONU allows to send the maximum number of PLOAM message in a uplink burst time slot; The the 4th to the tenth each and every one implication of byte is undefined, for keeping the territory; The verification territory of the 13 byte.The ONU of unregistered activation intercepts the SN_Request (serial number request) that OLT sends, receive the content of the PLOAM_Ability_OLT message in this frame of storage behind the SN_Request, and reply Serial_Number_ONU (ONU sequence number) message (carrying the sequence number of ONU in this message) to OLT;
Table 7PLOAM_Ability_OLT message format
After OLT received the Serial_Number_ONU message that certain ONU sends and obtains corresponding sequence number, OLT distributed ONU-ID by sending Assign_ONU-ID (distributing the ONU sign) message to this ONU to this ONU, enters ranging process.
OLT sends distance measurement request to ONU, after ONU receives above-mentioned distance measurement request, send the PLOAM message of PLOAM_Ability_ONU by name as shown in table 8 to OLT, this message is used for ONU and transmits self PLOAM message handling ability, and the content of first byte of PLOAM_Ability_ONU message is for sending the ONU-ID of this PLOAM message; The type of second this PLOAM message of byte representation is PLOAM_Ability_ONU, i.e. the PLOAM message handling ability of ONU; The 3rd byte representation OLT allows to give this ONU to send the maximum number of PLOAM message in a downlink frame; The the 4th to the tenth each and every one implication of byte is undefined, for keeping the territory; The verification territory of the 13 byte.
Table 8PLOAM_Ability_ONU message format
After OLT receives the PLOAM_Ability_ONU message of ONU transmission, the PLOAM message handling ability of the ONU that carries in the storage PLOAM_Ability_ONU message, and calculate range finding EqD (Equalization Delay as a result, isostatic lag) and will find range as a result that EqD sends to this ONU by Ranging_Time (range finding time) message, finish ONU and register activation.
Utilize the method for present embodiment, OLT and ONU also can consult each parameter in the burst mode expense (Burst Mode Overhead) of GPON system uplink frame, for example guard time (Guard time), leading (Preamble) and delimit (Delimiter); OLT and ONU also can consult maximum upstream bandwidth and distribute number etc.
Embodiment four
OLT initiatively sends working method and/or the ability to work that self supports, ONU sends working method and/or the ability to work that self supports under the request of OLT
In the GPON system, in ONU registration activation, OLT can adopt embodiment one, embodiment two and the mode of embodiment three to send working method and/or the ability to work of self supporting.When OLT transmitted Sequence Number request to ONU, OLT was by the PLOAM message handling ability of the reservation territory request ONU of Flags in the allocated bandwidth structure (Allocation Structure) in downlink frame PCBd territory.When the value of the bit5 of Flags is 0, represent that this ONU does not need to report the PLOAM message handling ability of its support; When the value of the bit5 of Flags is 1, expression requires this ONU to report the PLOAM message handling ability of its support, when ONU need report the PLOAM message handling ability of self supporting, ONU reports self disposal ability according to embodiment one, embodiment two and the mode of embodiment three, repeats no more herein.
Utilize the method for present embodiment, OLT and ONU also can consult each parameter in the burst mode expense (Burst Mode Overhead) of GPON system uplink frame, for example guard time (Guard time), leading (Preamble) and delimit (Delimiter); OLT and ONU also can consult maximum upstream bandwidth and distribute number etc.
Embodiment five
In the GPON system, in ONU registration activation, OLT can adopt embodiment one, embodiment two and the mode of embodiment three to send working method and/or the ability to work of self supporting.When OLT sent distance measurement request to ONU, OLT was by the PLOAM message handling ability of the reservation territory request ONU of Flags in the distribution structure (Allocation Structure) in downlink frame PCBd territory.When the value of the bit5 of Flags is 0, represent that this ONU does not need to report the PLOAM message handling ability of its support; When the value of the bit5 of Flags was 1, expression required this ONU to report the PLOAM message handling ability of its support.When ONU need report the PLOAM message handling ability of self supporting, ONU can respond distance measurement request and the request of PLOAM message handling ability of OLT in the following manner.
When (1) ONU sent the sequence number information of self, ONU transmitted the PLOAM message handling ability of self by the 12nd byte of Serial_Number_ONU information.
When (2) ONU sent the sequence number information of self, the bit4-0 that ONU also can pass through the IND territory of uplink frame transmitted the PLOAM message handling ability of self.
(3) ONU replys the Serial_Number_ONU message of form as shown in table 6 to OLT.
(4) ONU replys the PLOAM message of PLOAM_Ability_ONU by name as shown in table 8 to OLT.
ONU also can utilize other reservation territories of uplink frame or PLOAM message initiatively to send the PLOAM message handling ability of self supporting to OLT.
When ONU need report the PLOAM message handling ability of self supporting, ONU responded the distance measurement request of OLT and the processing PLOAM message capability of ONU in the manner described above, and all the other steps are similar to embodiment three to embodiment one, embodiment two, repeat no more herein.
Utilize the method for present embodiment, OLT and ONU also can consult each parameter in the burst mode expense (Burst Mode Overhead) of GPON system uplink frame, for example guard time (Guard time), leading (Preamble) and delimit (Delimiter); OLT and ONU also can consult maximum upstream bandwidth and distribute number etc.
Embodiment six
The PLOAM message handling ability that present embodiment adopts OLT and ONU to ask the other side mutually, OLT and ONU answer the other side's request then.
OLT adopts the PLOAM message handling ability of the mode request ONU of embodiment four and embodiment five, and ONU adopts the mode of embodiment four and embodiment five to respond the request (mode of ONU response is not herein used the bit4 in the IND territory of uplink frame) of OLT.The process of the PLOAM message handling ability of ONU request OLT is described below.Send SN_Request when OLT gives the ONU be in the registration state of activation, the sequence number information that the ONU that is in the registration state of activation sends self is during to OLT, and ONU is by the PLOAM message handling ability of the bit4 request OLT in the IND territory of uplink frame.When the value of the bit4 in IND territory is 0, represent that this OLT does not need to send the PLOAM message handling ability of its support; When the value of the bit4 in IND territory is 1, represent that this OLT need send the PLOAM message handling ability of its support.When the value of bit4 that receives the IND territory of the sequence number information of ONU and uplink frame as OLT is 1, OLT is when sending distance measurement request to ONU, and OLT sends the PLOAM message handling ability of self to ONU by the reservation territory bit1-0 of Flags in the distribution structure of utilizing downlink frame PCBd territory (AllocationStructure) of embodiment 1 proposition; The reservation position bit31 that OLT also can pass through the IDENT territory of downlink frame transmits the PLOAM message handling ability of self; The bit9-8 that OLT also can pass through the PLEND territory of downlink frame transmits the PLOAM message handling ability of self; OLT also can be by the request of the corresponding ONU of newly-increased PLOAM message as shown in table 7; OLT also can utilize other reservation territories of downlink frame or PLOAM message to send the PLOAM message handling ability of self supporting to ONU.
If the planning of ITU normal structure increases the PLOAM message byte number of PON system, OLT can transmit the PLOAM message handling ability of self supporting by the byte that increases in the PLOAM message, when the value that receives ONU bit4 in the IND territory of uplink frame when transmitting Sequence Number information as OLT is 1, OLT is when transmission comprises the PLOAM message (message name is Ranging_Time) of range finding time to ONU, last byte front in above-mentioned message has increased a byte, the form of the Ranging_Time message after the variation is as shown in table 9, a byte that increases is the 13rd byte, and this byte is used to transmit ONU allows the maximum number of transmission PLOAM message in a uplink burst time slot information.
Table 9Ranging_Time message format
OLT also can increase a territory and transmit the PLOAM message handling ability of self in downlink frame.
Utilize the method for present embodiment, OLT and ONU also can consult each parameter in the burst mode expense (Burst Mode Overhead) of GPON system uplink frame, for example guard time (Guard time), leading (Preamble) and delimit (Delimiter); OLT and ONU also can consult maximum upstream bandwidth and distribute number etc.
Embodiment seven
In the GPON system, have a guard time (Guard time) between the upstream bandwidth that OLT distributes for two ONU respectively, the physical layer overhead of the uplink frame of ONU (PLOu) part comprises preamble field (Preamble) and delimits territory (Delimiter) etc.The detailed process that OLT and ONU consult above-mentioned parameter is as follows:
It is Upstream_overhead parameters that OLT sends up expense (Upstream_Overhead) PLOAM message for all ONU, comprise information such as lead code bit number and delimiter bit number in the above-mentioned message, be in the registration state of activation ONU receive above-mentioned message after, carry out relevant configuration according to these network parameters
The sequence number information that the ONU that is in the registration state of activation sends self is during to OLT, and ONU passes to the following information of OLT by bit3-2 and the newly-increased byte of the 12 byte in the PLOAM message (message is called Serial_Number_ONU) that comprises Serial Number information: the shortest Guard time byte number that current ONU can support.The bit3 of the 12 byte of above-mentioned Serial Number information is as the highest order of above-mentioned newly-increased byte, and the bit2 of the 12 byte of above-mentioned Serial Number information is as time high position of above-mentioned newly-increased byte, and ONU utilizes above-mentioned ten bits to transmit the byte number of the minimum Guard time that self supports.After OLT receives above-mentioned information, select a suitable Guard time value to send to all ONU by Upstream_overhead parameters message, ONU carries out relevant configuration according to these network parameters after receiving Upstream_overhead parameters message.
OLT and ONU utilize above-mentioned Upstream_overhead parameters and above-mentioned Serial Number message to finish the negotiation of Guard time, Preamble and Delimiter byte number.
Present embodiment has provided OLT and has transmitted Preamble and the Delimiter byte number of self supporting by Upstream_overhead parameters message to ONU, and OLT also can increase a territory and transmit Preamble word and the Delimiter joint number of self supporting in downlink frame; Preamble and Delimiter byte number that OLT also can utilize the partial bytes transmission self to support in certain PLOAM message; OLT also can increase a new PLOAM message and transmit Preamble and the Delimiter byte number of self supporting.This enforcement has provided ONU bit3-2 and the shortest Guard time byte number that newly-increased byte transmission can be supported self by Serial_Number_ONU message lowest byte, and ONU also can increase a territory and transmit the shortest Guard time byte number that self can support in uplink frame; ONU also can increase the shortest Guard time byte number that byte transmission self can be supported in certain PLOAM message; ONU also can increase the shortest Guard time byte number that a new PLOAM message transmission self can be supported.
Present embodiment has provided a kind of OLT and ONU initiatively sends the negotiation that message has been finished Guard time, Preamble and Delimiter byte number to the other side, Guard time, Preamble and Delimiter byte number that OLT and ONU also can ask the other side to support mutually, OLT and ONU answer the other side's request then.
OLT and ONU have consulted Guard time, the Preamble and the Delimiter byte number that support one another in the present embodiment, the content that also can utilize the method for this example to consult Preamble and Delimiter.
Embodiment eight
OLT and ONU consult to select a suitable maximum upstream bandwidth to distribute the method for number as follows:
In the GPON system, in ONU registration activation, OLT and ONU consult the maximum upstream bandwidth distribution number that ONU supports, it is the number of OLT maximum distribution structures of distributing in a downlink frame, OLT stores negotiation result then, carry out upstream bandwidth at OLT and divide timing, carry out with reference to negotiation result, promptly the number of the OLT distribution structure of distributing in a downlink frame can not surpass the maximum upstream bandwidth that ONU supports and distribute number.Detailed process is as described below.
When OLT gives the ONU be in the registration state of activation apply for information that transmits Sequence Number, the sequence number information that the ONU that is in the registration state of activation sends self is during to OLT, and ONU passes to the maximum upstream bandwidth that OLT self supports and distributes number by increase by two bytes in the sequence number information back.OLT receives and stores above-mentioned information.Send upstream bandwidth and divide timing when OLT next time, the number of the distribution structure that OLT distributes in a downlink frame can not surpass the value of the above-mentioned information of all OLT storages.
Present embodiment has provided ONU and has passed to the maximum upstream bandwidth distribution number that OLT self supports by increase by two bytes in the sequence number information back, and ONU also can increase a territory transmission self support in uplink frame maximum upstream bandwidth distributes number; ONU also can increase byte and transmit the maximum upstream bandwidth distribution number of self supporting in certain PLOAM message; ONU also can increase a new PLOAM message and transmit the maximum upstream bandwidth distribution number of self supporting.
Present embodiment has provided a kind of ONU and has initiatively finished the negotiation that ONU supports maximum upstream bandwidth distribution number to OLT transmission message, also can adopt OLT to ask the mode of ONU answer then to consult ONU and support maximum upstream bandwidth to distribute number.
Present embodiment has provided OLT and ONU consults the maximum upstream bandwidth distribution number that ONU can support in the registration activation stage of ONU, also can adopt at ONU to be in the maximum upstream bandwidth distribution number that other stages negotiations ONU can support.
Present embodiment has provided OLT and ONU and has consulted the maximum upstream bandwidth that ONU can support and distribute number, also can adopt the method for present embodiment to consult other parameters of the allocated bandwidth aspect that ONU supports.
Device embodiment
According to embodiments of the invention, a kind of passive optical network and network element are provided.
Fig. 1 is the schematic diagram according to the passive optical network of the embodiment of the invention.
As shown in Figure 1, this passive optical network comprises: OLT and ONU, wherein,
OLT and ONU send the ability to work that self is supported mutually, and OLT and ONU dispose the running parameter of self according to the ability to work that the other side self who receives supports.
The ability to work of said system can comprise following in one of at least: the ability of handling PLOAM message; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Above-mentioned running parameter can comprise following in one of at least: the number of the PLOAM message of transmission; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Fig. 2 is the schematic diagram according to the EPON network element of the embodiment of the invention.
As shown in Figure 2, this EPON network element comprises: sending module 201, receiver module 203 and configuration module 205.
Particularly, sending module 201 is used to send the ability to work of self supporting; Receiver module 203 is used for the ability to work that other network elements are supported; Configuration module 205 is used for disposing the parameter of self according to the ability to work of other network element supports that receive.
Above-mentioned sending module 201 can utilize one of following mode to send the ability to work of self supporting: a newly-built PLOAM message, this PLOAM message are used to send the ability to work that network element is supported; Increase the byte of existing message; Utilize the reservation territory of partial bytes in existing message, uplink frame and the downlink frame.
One of below above-mentioned sending module 201 specifically is used for sending: the ability of handling PLOAM message; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
Above-mentioned running parameter comprise following in one of at least: the number of the PLOAM message of transmission; The burst mode expense of uplink frame; Maximum upstream bandwidth distributes number.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. negotiation method in the EPON is characterized in that, comprising:
Optical Network Terminal OLT sends to optical network unit ONU with the ability to work of self supporting, described ONU disposes the running parameter of self according to the ability to work that the described OLT that receives supports;
Described ONU sends to described OLT with the ability to work of self supporting, described OLT disposes the running parameter of self according to the ability to work that the described ONU that receives supports.
2. method according to claim 1 is characterized in that,
Before described OLT sent to described ONU with the ability to work of self supporting, described method also comprised:
Described ONU asks described OLT to send the ability to work that described OLT supports;
Before described ONU sent to described OLT with the ability to work of self supporting, described method also comprised:
Described OLT asks described ONU to send the ability to work that described ONU supports.
3. method according to claim 2 is characterized in that,
Described ONU is the ability to work supported of the described OLT of request one of in the following manner:
A newly-built message, described message are used to ask the ability to work of described OLT support;
Increase the byte of existing message;
Utilize the reservation territory of partial bytes in existing message or the uplink frame;
Described OLT is the ability to work supported of the described ONU of request one of in the following manner:
A newly-built message, described message are used to ask the ability to work of described ONU support;
Increase the byte of existing message;
Utilize the reservation territory of partial bytes in existing message or the downlink frame.
4. method according to claim 1 is characterized in that,
The ability to work that described OLT supports self sends to described ONU and one of comprises in the following manner and to send:
A newly-built message, described message are used to send the ability to work that OLT supports;
Increase the byte of existing message;
Utilize the reservation territory of partial bytes in existing message or the downlink frame;
The ability to work that described ONU supports self sends to described OLT and one of comprises in the following manner and to send:
A newly-built message, described message are used to send the ability to work that ONU supports;
Increase the byte of existing message;
Utilize the reservation territory of partial bytes in existing message or the uplink frame.
5. according to each described method in the claim 1 to 4, it is characterized in that described ability to work one of comprises in following:
Handle the ability of physical layer operations management maintenance message;
The burst mode expense of uplink frame;
Maximum upstream bandwidth distributes number.
6. according to each described method in the claim 1 to 4, it is characterized in that described running parameter one of comprises in following:
The number of the physical layer operations management maintenance message that sends;
The burst mode expense of uplink frame;
Maximum upstream bandwidth distributes number.
7. according to each described method in the claim 1 to 4, it is characterized in that described existing message comprises:
Physical layer operations management maintenance message.
8. passive optical network, comprise Optical Network Terminal OLT and optical network unit ONU, it is characterized in that described OLT and described ONU send the ability to work that self supports mutually, described OLT and described ONU dispose the running parameter of self according to the ability to work that the other side who receives supports.
9. system according to claim 8 is characterized in that, described ability to work comprise following in one of at least:
Handle the ability of physical layer operations management maintenance message;
The burst mode expense of uplink frame;
Maximum upstream bandwidth distributes number.
10. system according to claim 8 is characterized in that, described running parameter comprise following in one of at least:
The number of the physical layer operations management maintenance message that sends;
The burst mode expense of uplink frame;
Maximum upstream bandwidth distributes number.
11. an EPON network element is characterized in that, comprising:
Sending module is used to send the ability to work of self supporting;
Receiver module is used to receive the ability to work that other network elements are supported;
Configuration module is used for disposing the parameter of self according to the ability to work of described other network element supports that receive.
12. network element according to claim 11 is characterized in that, described sending module utilizes one of following mode to send the ability to work of self supporting:
A newly-built message, described message are used to send the ability to work that network element is supported;
Increase the byte of existing message;
Utilize the reservation territory of partial bytes in existing message, uplink frame and the downlink frame.
One of 13. network element according to claim 11 is characterized in that, below described sending module specifically is used for sending:
Handle the ability of physical layer operations management maintenance message;
The burst mode expense of uplink frame;
Maximum upstream bandwidth distributes number.
14. network element according to claim 11 is characterized in that, described running parameter comprise following in one of at least:
The number of the physical layer operations management maintenance message that sends;
The burst mode expense of uplink frame;
Maximum upstream bandwidth distributes number.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101675037A CN101998190A (en) | 2009-08-20 | 2009-08-20 | Method for consultation in passive optical network, passive optical network system and network elements |
| PCT/CN2010/074413 WO2011020376A1 (en) | 2009-08-20 | 2010-06-24 | Processing method in a passive optical network, system and network element for a passive optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101675037A CN101998190A (en) | 2009-08-20 | 2009-08-20 | Method for consultation in passive optical network, passive optical network system and network elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101998190A true CN101998190A (en) | 2011-03-30 |
Family
ID=43606620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101675037A Pending CN101998190A (en) | 2009-08-20 | 2009-08-20 | Method for consultation in passive optical network, passive optical network system and network elements |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101998190A (en) |
| WO (1) | WO2011020376A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086808A1 (en) * | 2011-12-16 | 2013-06-20 | 中兴通讯股份有限公司 | Service issue method and device for a gigabit-capable passive optical network |
| CN103841474A (en) * | 2012-11-23 | 2014-06-04 | 中兴通讯股份有限公司 | Passive optical network wavelength tuning method, system and device |
| CN107592162A (en) * | 2017-08-31 | 2018-01-16 | 上海剑桥科技股份有限公司 | A kind of method and system of adaptive optical parameter selection |
| WO2018166263A1 (en) * | 2017-03-14 | 2018-09-20 | 中兴通讯股份有限公司 | Pon channel establishment method, onu, plt and system |
| CN112752174A (en) * | 2021-01-06 | 2021-05-04 | 烽火通信科技股份有限公司 | Real-time recovery method and system for optical signal degradation of PON system |
| WO2021203721A1 (en) * | 2020-04-07 | 2021-10-14 | 中兴通讯股份有限公司 | Optical network unit registration method, optical network unit, optical line terminal and system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100640328B1 (en) * | 2002-09-19 | 2006-10-30 | 삼성전자주식회사 | Discovery method for oam capability in ethernet passive optical network |
| CN1320803C (en) * | 2003-11-06 | 2007-06-06 | 北京邮电大学 | Dynamic distribution control of upward band width in passive optical network |
| CN101047450B (en) * | 2006-05-11 | 2011-04-20 | 华为技术有限公司 | Method for sending zero configuration service to optical fibre access terminal equipment |
| KR100763530B1 (en) * | 2006-09-29 | 2007-10-05 | 한국전자통신연구원 | Automatic power control method for olt in pon, and storage media |
| US7873276B2 (en) * | 2007-06-06 | 2011-01-18 | At&T Intellectual Property I, L.P. | System and method for registration of network units |
| CN101415129B (en) * | 2007-10-16 | 2011-09-21 | 中兴通讯股份有限公司 | Method for configuring service quality parameter of Ethernet passive optical network |
-
2009
- 2009-08-20 CN CN2009101675037A patent/CN101998190A/en active Pending
-
2010
- 2010-06-24 WO PCT/CN2010/074413 patent/WO2011020376A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086808A1 (en) * | 2011-12-16 | 2013-06-20 | 中兴通讯股份有限公司 | Service issue method and device for a gigabit-capable passive optical network |
| CN103841474A (en) * | 2012-11-23 | 2014-06-04 | 中兴通讯股份有限公司 | Passive optical network wavelength tuning method, system and device |
| CN103841474B (en) * | 2012-11-23 | 2019-01-25 | 中兴通讯股份有限公司 | Wavelength tuning method, system and equipment in a kind of passive optical network |
| WO2018166263A1 (en) * | 2017-03-14 | 2018-09-20 | 中兴通讯股份有限公司 | Pon channel establishment method, onu, plt and system |
| US11051090B2 (en) | 2017-03-14 | 2021-06-29 | Zte Corporation | PON channel establishment method, ONU, OLT and system |
| CN107592162A (en) * | 2017-08-31 | 2018-01-16 | 上海剑桥科技股份有限公司 | A kind of method and system of adaptive optical parameter selection |
| WO2019041471A1 (en) * | 2017-08-31 | 2019-03-07 | 上海剑桥科技股份有限公司 | Self-adaptive optical parameter selection method and system |
| WO2021203721A1 (en) * | 2020-04-07 | 2021-10-14 | 中兴通讯股份有限公司 | Optical network unit registration method, optical network unit, optical line terminal and system |
| CN112752174A (en) * | 2021-01-06 | 2021-05-04 | 烽火通信科技股份有限公司 | Real-time recovery method and system for optical signal degradation of PON system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011020376A1 (en) | 2011-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11374674B2 (en) | Passive optical network system, optical line terminal, and optical network unit | |
| CN101998183B (en) | Transmission method of PLOAM (Physical Layer Operation Administration and Maintenance) message in passive optical network and assembling method | |
| CN101742365B (en) | Passive optical network (PON) wavelength assignment method, device and system | |
| CN1496064B (en) | Operation, management and maintenance capability finding method in Ethernet passive optical network | |
| CN101621454B (en) | Passive optical network system, optical line terminal and optical network units | |
| CN102082976B (en) | Method and system for sending data in passive optical network (PON) | |
| CN106537826A (en) | Communication method, apparatus and system for passive optical network | |
| JP6064048B2 (en) | Method for supporting transfer of optical network units between passive optical networks | |
| CN101399611A (en) | PON multicast communication system, multicast management method and corresponding device | |
| CN101330450B (en) | Method, system and equipment for distributing bandwidth of optical network | |
| CN101998190A (en) | Method for consultation in passive optical network, passive optical network system and network elements | |
| CN103139105A (en) | Uplink bandwidth distribution method and system in passive optical network (PON) system | |
| CN100384123C (en) | Kilomega passive optical network system | |
| CN102131130B (en) | Signal processing method, signal processing device and signal processing system for passive optical network (PON) | |
| CN101692672A (en) | Registration method and registration device of optical network unit in passive optical network | |
| CN101420359B (en) | Bandwidth allocation system and method in passive optical network | |
| CN103475439A (en) | Channel wavelength selection method based on TDM/WDM mixed PON structure | |
| WO2013189321A1 (en) | Tuning method, system and device for wavelength in passive optical network | |
| CN101616338A (en) | A kind of method, apparatus and system that data transmit in the multiple spot multi-plexing light accessing system | |
| CN101174909B (en) | Control method, equipment and system for passive optical network multicast access | |
| CN101873516B (en) | Method for registering and activating optical network unit in a gigabit passive optical network system | |
| EP2506462A1 (en) | Power saving method, system and optical network unit in passive optical network | |
| CN103841473A (en) | Method, system and device for registration and activation of optical network unit | |
| CN102377481A (en) | Ranging method and ranging system in passive optical network | |
| CN112738659A (en) | Communication method based on passive optical network, related equipment and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110330 |