CN1897505A - Light network unit log method based on inquiry in Ethernet non-light source network - Google Patents

Light network unit log method based on inquiry in Ethernet non-light source network Download PDF

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CN1897505A
CN1897505A CNA2006100887561A CN200610088756A CN1897505A CN 1897505 A CN1897505 A CN 1897505A CN A2006100887561 A CNA2006100887561 A CN A2006100887561A CN 200610088756 A CN200610088756 A CN 200610088756A CN 1897505 A CN1897505 A CN 1897505A
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message
registration
onu
report
gate
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CN100505918C (en
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沈成彬
蒋铭
王作强
王波
王晓平
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Abstract

The method comprises: after the optical line terminal (OLT) sends a registration message to the optical network unit (ONU), it sends a strobe message with a wideband authorization; if ONU process the registration message rapidly, then it can return a registration confirmation message to the OLT in the wideband authorization time defined by the strobe message so as to make successful registration; if in the wideband authorization time the registration message is not returned, then the OLT sends a strobe message to ONU in order to enquiry its state; after the ONU processes the registration message, the OLT sends the strobe message with a wideband authorization again in order to provide a wideband authorization for the ONU.

Description

The register method based on inquiry of optical network unit in the Ethernet passive optical network
Technical field
The present invention relates to a kind of Multi-point Control Protocol (MPCP) that is applied to Ethernet passive optical network (EPON) and find flow process, relate in particular to a kind of optical network unit (ONU) registration method based on inquiry mechanism.
Background technology
Along with the internet develop rapidly and new business such as IPTV, new interface applications are gone into bandwidth and are proposed more and more higher requirement, optical fiber inserts the inevitable direction that becomes the broadband access network development.Consider that from the maturity and the operation cost aspect of technology EPON is the main implementation method that optical fiber inserts, and also is the most potential access technology.
The EPON system adopts the topological structure of the shared point in broadband to multiple spot, each optical line terminal (OLT) connects a plurality of optical network units (ONU) by Optical Distribution Network (ODN), wherein descending employing broadcast transmission, up employing time division multiple access inserts (TDMA) mode, come coordination data effectively to send and reception with Multi-point Control Protocol (MPCP), to guarantee that up direction only allows an ONU transmission professional at any time in system's running.In the IEEE802.3ah standard, defined the Multi-point Control Protocol (MPCP) of EPON.The MPCP functional module comprises three big functions: find to handle, report and handle and the gating processing.In MPCP, defined 5 Multi-point Control Protocol data cells (MPCPDU): GATE, REGISTER_REQ, REGISTER, REGISTER_ACK and REPORT, with functions such as the automatic discovery that realizes ONU and adding, bandwidth request, bandwidth authorizing, range findings.
In the prior art, the EPON system is by finding that handling process will newly connect or non-online ONU is linked in the network.The discovery handling process is initiated by OLT, and it produces legal discovery time window, to detect non-online ONU.OLT finds cycle from window to the ONU notice that find of gating message by broadcasting.Non-online and ONU that wish registration receives and finds to wait for the beginning of this discoverys window period after the gating message, finds in window period to OLT transmission login request message REGISTER_REQ at this then.OLT receives after the effective REGISTER_REQ, registers this ONU, sends registration message REGISTER to newfound ONU then.Then, OLT sends a gating message to ONU, and being used for provides bandwidth authorizing to send registration confirmation message REGISTER_ACK to ONU.After OLT received REGISTER_ACK, the discovery flow process of this ONU had just been finished, and ONU succeeds in registration and can begin to send normal business.
In the discovery handling process of prior art, ONU must send REGISTER_ACK message in the specified bandwidth authorizing of gating message in the time, otherwise OLT will think that this ONU does not finish registration process, and OLT can require ONU to re-execute the discovery handling process and re-register.Because ONU needs the regular hour to handle REGISTER message, and in IEEE 802.3ah standard, clearly do not stipulate the size in this processing time, therefore, if the processing time of ONU long (for example above tens milliseconds), then ONU can't send REGISTER_ACK message in the specified bandwidth authorizing of gating message in the time.And wait until when ONU is ready to send REGISTER_ACK message but there is not the bandwidth authorizing of OLT, thereby ONU can't finish registration process.This will cause realizing the intercommunication between OLT and the ONU.
Therefore, need the discovery handling process of the MPCP of improvement prior art, under normal circumstances also can successfully succeed in registration to guarantee the slow ONU of processing speed.
Summary of the invention
The purpose of this invention is to provide a kind of improved optical network unit (ONU) registration method based on inquiry mechanism, so that overcome the defective that the slow ONU of processing speed can not be registered in the prior art, guarantee that simultaneously the fast ONU of processing speed still can succeed in registration apace, and do not prolong its normal hour of log-on.
The present invention finishes inquiry by using 5 MPCPDU that defined in the IEEE 802.3ah standard, thereby realizes according to improved register method of the present invention.Therefore, the present invention can with existing IEEE 802.3ah operating such, and do not need additionally to define other message, thereby can not increase the weight of load according to the system of IEEE 802.3ah standard operation.
According to an aspect of the present invention, provide in a kind of Ethernet passive optical network the optical network unit (ONU) registration method based on inquiry, may further comprise the steps: optical line terminal sends log-on message REGISTER to the optical network unit of request registration; Optical line terminal sends a gating message GATE who has bandwidth authorizing to this optical network unit, and being used for provides in order to send the bandwidth authorizing of registration confirmation message REGISTER_ACK to this optical network unit; If optical network unit had been handled the log-on message REGISTER that is received well before the specified bandwidth authorizing time of this gating message GATE finishes, then send registration confirmation message REGISTER_ACK in this bandwidth authorizing time inward-bound light line terminal; If this optical network unit does not send registration confirmation message REGISTER_ACK to optical line terminal in this bandwidth authorizing in the time, then optical line terminal sends the gating message GATE of pressure report to inquire its state to optical network unit periodically with time interval gateTime, represent that up to report message REPORT this optical network unit handled the log-on message REGISTER that is received well, force the report bit to be set among the gating message GATE that wherein forces to report, and optical network unit is in response to the gating message GATE that forces report, send report message REPORT to optical line terminal, optical line terminal sends a gating message GATE who has bandwidth authorizing then, and the optical network unit of request registration sends registration confirmation message REGISTER_ACK to described optical line terminal in the specified bandwidth authorizing of gating message GATE that this has bandwidth authorizing in the time.
According to a preferred aspect of the present invention, the regulation optical line terminal at most periodically sends Gate_Num gating message of forcing report.
Description of drawings
Below in conjunction with the detailed preferred embodiment of introducing according to register method of the present invention of accompanying drawing, wherein:
Fig. 1 represents the handshake procedure of defined discovery message in the IEEE 802.3ah standard;
Fig. 2 represents to handle handshake procedure according to the multipoint-controlled protocol discovery of the employing of the present invention mechanism of repeatedly inquiring;
Fig. 3 represents the flow chart of register method according to an embodiment of the invention;
Fig. 4 represents the flow chart of register method in accordance with a preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing introduce in detail according in the Ethernet passive optical network of the present invention based on the embodiment of the optical network unit (ONU) registration method of inquiry mechanism.
Fig. 1 has represented in the prior art, the handshake procedure of defined discovery message in the IEEE 802.3ah standard.As shown in Figure 1, the discovery handling process is initiated by OLT, and it periodically produces legal discovery time window, to detect non-online ONU.OLT finds cycle from window to the ONU notice that find of gating message (Discovery GATE) by one of broadcasting.Non-online ONU receives and finds to wait for the beginning of this discovery window period after the gating message, finds to send login request message REGISTER_REQ to OLT in the window period at this then.OLT receives after the effective REGISTER_REQ, registers this ONU, distributes and specify the LLID (LLID) of new port, and with corresponding M AC address and LLID binding.Next, OLT sends registration message REGISTER to newfound ONU, and this registration message comprises the LLID of ONU and Synctime lock in time that OLT requires.Then, OLT sends gating message to ONU, is used for sending bandwidth authorizing to send registration confirmation message REGISTER_ACK to ONU.After OLT received REGISTER_ACK, the discovery flow process of this ONU had just been finished, and ONU succeeds in registration and can begin to send normal business.
In the prior art, ONU must send REGISTER_ACK message in the specified bandwidth authorizing of this gating message in the time, otherwise OLT will think that this ONU does not finish registration process.Because ONU needs the regular hour to handle REGISTER message, therefore, if the processing time of ONU is long, then ONU can't send REGISTER_ACK message in the specified bandwidth authorizing of this gating message in the time.And wait until when ONU is ready to send REGISTER_ACK message but there is not the bandwidth authorizing of OLT, thereby ONU can't finish registration process.This will cause realizing the intercommunication between OLT and the ONU.
Fig. 2 represents to handle handshake procedure according to the multipoint-controlled protocol discovery of the employing of the present invention mechanism of repeatedly inquiring.As shown in Figure 2, the discovery handling process is initiated by the optical line terminal in the Ethernet passive optical network, optical line terminal OLT produces legal discovery time window, and finds cycle from this discovery time window to optical network unit ONU that notify of gating message by broadcasting one.Unregistered and the ONU hope registration receives this and finds to wait for the beginning of discovery time window period after gating message, and sends login request message REGISTER_REQ to OLT in the discovery time window period.OLT receives after the login request message, and just the ONU to request registration registers, and distributes and specify the LLID LLID of new port, and with corresponding M AC address and LLID binding.
OLT sends registration message REGISTER to this ONU after the ONU of request registration is registered, and this message comprises the LLID of this ONU and Synctime lock in time that OLT requires.Then, OLT sends the gating message with bandwidth authorizing to this ONU, and being used for provides in order to send the bandwidth authorizing of registration confirmation message REGISTER_ACK to this ONU.ONU handles registration message REGISTER after receiving registration message REGISTER.If ONU can handle the REGISTER message that is received apace well, and have the specified bandwidth authorizing of the gating message of bandwidth authorizing at this and send registration confirmation message to OLT in time, then succeed in registration; Otherwise, if promptly ONU does not send registration confirmation message in the specified bandwidth authorizing of this gating message in the time, then OLT sends the gating message of forcing report to ONU periodically with time interval gateTime, force in the gating message of report at this, report bit (forcereport) set to forcing, thereby force ONU to return report message REPORT.In response to the gating message that each pressure of OLT transmission is reported, ONU returns report message REPORT to OLT.OLT determines according to the information among the report message REPORT that ONU returned whether ONU has handled registration message REGISTER well.If the report message REPORT that ONU returned represents that it does not also handle registration message well, then OLT continues to send the gating message of forcing report periodically with time interval gateTime, represents that up to report message ONU has handled registration message well.After ONU finishes the registration message processing, can in Next Report message, report the registration confirmation message in its formation.If OLT receives the report message that expression ONU has handled registration message well, then OLT no longer sends the gating message of forcing report, but send gating message with bandwidth authorizing, so that provide in order to send the bandwidth authorizing of registration confirmation message REGISTER_ACK to ONU.ONU receives after the gating message with bandwidth authorizing, sends registration confirmation message REGISTER_ACK in the time to OLT in this specified bandwidth authorizing of gating message with bandwidth authorizing, thus the registration process of finishing.
By this register method, can prevent because ONU handles the overlong time of registration message and can't finish registration, thereby guarantee that the slow ONU of processing speed also can succeed in registration smoothly based on inquiry mechanism; The fast ONU of processing speed still can send registration confirmation message in the time and finish registration in the specified bandwidth authorizing of first gating message simultaneously, this regulation with IEEE 802.3ah is consistent, has guaranteed can not prolong the normal registration time of the fast ONU of processing speed.And, the present invention uses defined 5 MPCPDU:GATE, REGISTER_REQ, REGISTER, REGISTER_ACK and REPORT in the Multi-point Control Protocol that has IEEE 802.3ah standard now, therefore can with existing IEEE 802.3ah operating such, and can not increase the weight of load according to the system of 802.3ah standard operation.
According to a preferred embodiment of the present invention, regulation OLT sends Gate_Num gating message of forcing report at most periodically, if sending Gate_Num the report message of forcing to be received after the gating message of report, OLT represents that still ONU does not also handle registration message well, ONU registration failure then, OLT removes registration (DEREGISTER), and can require ONU to re-execute discovery procedure and re-register.According to this preferred embodiment, can prevent to be always the slow excessively ONU of processing speed and send the gating message of forcing report, this has consumed system resource.Wherein forcing the maximum quantity Gate_Num of the gating message of report is integer, and its numerical value can be configured, and span is 2≤Gate_Num≤32.Preferably, Gate_Num=10.
In addition, the numerical value that sends the time interval gateTime of gating message periodically can be configured, and its scope is 1ms≤gateTime≤4ms.Preferably, gateTime=2ms.
The span of the maximum quantity Gate_Num of the gating message of the pressure report that sends and the product of time interval gateTime is 20ms≤Gate_Num * gateTime≤50ms.
Fig. 3 has represented according to the flow chart based on the optical network unit (ONU) registration method of inquiring of the present invention.Wherein, in step S301, OLT sends registration message REGISTER to the ONU of request registration.Then, in step S302, OLT sends the gating message with bandwidth authorizing to this ONU, is used for providing in order to send the bandwidth authorizing of registration confirmation message REGISTER_ACK to this ONU.Judge in S303 whether ONU has sent registration confirmation message in the specified bandwidth authorizing of this gating message in the time.If ONU has sent registration confirmation message to OLT in the specified bandwidth authorizing of this gating message in the time, then succeed in registration; Otherwise, if promptly ONU does not send registration confirmation message in the specified bandwidth authorizing of this gating message in the time, then advancing to step S304, OLT sends the gating message of forcing report to ONU.In step S305, in response to the gating message of the pressure report that OLT sent, ONU returns report message REPORT to OLT.In step S306, judge according to the information among the report message REPORT that ONU returned whether ONU has handled registration message REGISTER well.If the report message REPORT that ONU returned represents that it does not also handle registration message well, when then once the time interval of execution in step S304 is gateTime on distance, turn back to step S304, OLT sends the gating message of forcing report, and promptly OLT sends the gating message of forcing report the time interval periodically.If OLT receives the report message that expression ONU has handled registration message well, then advance to step S307, OLT sends the gating message with bandwidth authorizing, provides in order to send the bandwidth authorizing of registration confirmation message REGISTER_ACK to ONU.Subsequently, in step S308, ONU sends registration confirmation message REGISTER_ACK to OLT in the specified bandwidth authorizing of gating message that this has bandwidth authorizing in the time, thus the registration process of finishing.
Fig. 4 represents according to a method for optimizing of the present invention, has stipulated that wherein the OLT cycle sends the maximum quantity Gate_Num of the gating message of forcing report.In this preferred embodiment, variable Gate_tx is set, is illustrated in the quantity of the gating message of the pressure report that certain moment OLT has sent periodically in the ONU registration process, its initial value is made as 0, this value is variable in registration process, and is reset to 0 after registration process is finished or failed.
As shown in Figure 4, if judge that in step S306 ONU does not also handle registration message REGISTER well, then advance to step S309, so that whether the currency of judgment variable Gate_tx forces the maximum quantity Gate_Num of the gating message of report greater than the transmission of defined.If greater than, registration failure then, OLT removes registration (DEREGISTER), and can require ONU to re-execute discovery procedure and re-register.On the contrary, if be not more than, then advance to step S310, the value of variable Gate_tx adds 1.When the time interval of distance execution in step last time S304 is gateTime, turn back to step S304 then, promptly OLT sends the gating message of forcing report the time interval periodically.
Other steps among Fig. 4 identical with shown in Fig. 3, so it uses same reference numerals, and here repeat no more.
Adopt repeatedly inquiry mechanism according to register method of the present invention, prevented because ONU handles the overlong time of registration message and can't finish registration, thereby guaranteed that the slow ONU of processing speed also can succeed in registration smoothly; The fast ONU of processing speed still can send registration confirmation message in the time and finish registration in the specified bandwidth authorizing of first gating message simultaneously, this regulation with IEEE 802.3ah is consistent, has guaranteed can not prolong the normal registration time of the fast ONU of processing speed.And, the present invention uses defined 5 MPCPDU:GATE, REGISTER_REQ, REGISTER, REGISTER_ACK and REPORT in the Multi-point Control Protocol of IEEE 802.3ah standard in the prior art, therefore can with existing IEEE802.3ah operating such, and can not increase the weight of load according to the system of 802.3ah standard operation.
The present invention guarantees that by the inquiry mechanism of OLT ONU can handle the bandwidth authorizing that registration message obtains sending registration confirmation message later on as early as possible, and realizes simple and flexible.

Claims (7)

  1. In the Ethernet passive optical network based on the optical network unit (ONU) registration method of inquiry, wherein said Ethernet passive optical network comprises optical network unit and optical line terminal, said method comprising the steps of:
    Optical line terminal sends log-on message REGISTER to the optical network unit of request registration;
    Described optical line terminal sends a gating message GATE who has bandwidth authorizing to the optical network unit of described request registration, and being used for provides in order to send the bandwidth authorizing of registration confirmation message REGISTER_ACK to the optical network unit of described request registration;
    If the optical network unit of described request registration had been handled the log-on message REGISTER that is received well before this specified bandwidth authorizing time of gating message GATE that has bandwidth authorizing finishes, then send registration confirmation message REGISTER_ACK to described optical line terminal in the time in this bandwidth authorizing;
    If the optical network unit of described request registration does not send registration confirmation message REGISTER_ACK to described optical line terminal in this bandwidth authorizing in the time, then
    Described optical line terminal sends the state of the gating message GATE of pressure report with the optical network unit of inquiry described request registration to the optical network unit of described request registration periodically with time interval gateTime, represent that up to report message REPORT the optical network unit of this request registration handled the log-on message REGISTER that is received well, force the report bit to be set among the gating message GATE of wherein said pressure report, and the optical network unit of described request registration sends described report message REPORT in response to the gating message GATE of described pressure report to described optical line terminal;
    Described optical line terminal sends a gating message GATE who has bandwidth authorizing;
    The optical network unit of described request registration sends registration confirmation message REGISTER_ACK to described optical line terminal in the specified bandwidth authorizing of gating message GATE that this has bandwidth authorizing in the time.
  2. 2. according to the method for claim 1, it is characterized in that described optical line terminal at most periodically sends Gate_Num gating message of forcing report.
  3. 3. according to the method for claim 2, it is characterized in that the span of the maximum quantity Gate_Num of the gating message of the pressure report of described transmission and the product of described time interval gateTime is 20ms≤Gate_Num * gateTime≤50ms.
  4. 4. according to the method for claim 2 or 3, it is characterized in that the span of the maximum quantity Gate Num of the gating message of the pressure report of described transmission is 2≤Gate_Num≤32.
  5. 5. according to the method for claim 4, it is characterized in that the maximum quantity Gate_Num=10 of the gating message of the pressure report of described transmission.
  6. 6. according to each method in the claim 1 to 3, it is characterized in that the span of described time interval gateTime is 1ms≤gateTime≤4ms.
  7. 7. according to the method for claim 6, it is characterized in that described time interval gateTime=2ms.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010031269A1 (en) * 2008-09-18 2010-03-25 华为技术有限公司 Method, system and device for realizing the user side terminal obtains a password
CN101827099A (en) * 2010-04-15 2010-09-08 中兴通讯股份有限公司 Method and device for allocating logical link identifiers for optical network unit
CN101827289A (en) * 2010-05-24 2010-09-08 烽火通信科技股份有限公司 Method for acquiring wavelength values by remote equipment in wavelength division multiplex-Ethernet passive optical network (WDM-EPON) passive optical network system
CN101471836B (en) * 2007-12-26 2010-11-10 普然通讯技术(上海)有限公司 Registration method of slave equipment to main equipment of packet-switching network
CN101291181B (en) * 2007-04-19 2012-03-21 株式会社日立制作所 Expandable passive optical network equipment having optical network unit with changeable mode
CN111629013A (en) * 2019-02-27 2020-09-04 北京奇虎科技有限公司 Method and device for managing service node and node network
CN112261513A (en) * 2020-09-18 2021-01-22 芯河半导体科技(无锡)有限公司 ONU high-throughput report mode

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KR100490901B1 (en) * 2002-12-02 2005-05-24 한국전자통신연구원 Dynamic Bandwidth Allocation Method and Apparatus based on Class of Service over Ethernet Passive Optical Network
KR100493071B1 (en) * 2003-01-21 2005-06-02 삼성전자주식회사 Method for controlling bandwidth in ethernet passive optical network
CN1777334B (en) * 2005-12-09 2010-09-29 真宽通信技术（苏州）有限公司 Ethernet passive optical network multi-service dynamic bandwide authorizing method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101291181B (en) * 2007-04-19 2012-03-21 株式会社日立制作所 Expandable passive optical network equipment having optical network unit with changeable mode
CN101471836B (en) * 2007-12-26 2010-11-10 普然通讯技术(上海)有限公司 Registration method of slave equipment to main equipment of packet-switching network
WO2010031269A1 (en) * 2008-09-18 2010-03-25 华为技术有限公司 Method, system and device for realizing the user side terminal obtains a password
CN101827099A (en) * 2010-04-15 2010-09-08 中兴通讯股份有限公司 Method and device for allocating logical link identifiers for optical network unit
CN101827099B (en) * 2010-04-15 2014-07-16 中兴通讯股份有限公司 Method and device for allocating logical link identifiers for optical network unit
CN101827289A (en) * 2010-05-24 2010-09-08 烽火通信科技股份有限公司 Method for acquiring wavelength values by remote equipment in wavelength division multiplex-Ethernet passive optical network (WDM-EPON) passive optical network system
CN101827289B (en) * 2010-05-24 2013-01-02 烽火通信科技股份有限公司 Method for acquiring wavelength values by remote equipment in wavelength division multiplex-Ethernet passive optical network (WDM-EPON) passive optical network system
CN111629013A (en) * 2019-02-27 2020-09-04 北京奇虎科技有限公司 Method and device for managing service node and node network
CN112261513A (en) * 2020-09-18 2021-01-22 芯河半导体科技(无锡)有限公司 ONU high-throughput report mode

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