CN111131934A - Extended wavelength allocation method based on PON system - Google Patents

Extended wavelength allocation method based on PON system Download PDF

Info

Publication number
CN111131934A
CN111131934A CN201911374586.7A CN201911374586A CN111131934A CN 111131934 A CN111131934 A CN 111131934A CN 201911374586 A CN201911374586 A CN 201911374586A CN 111131934 A CN111131934 A CN 111131934A
Authority
CN
China
Prior art keywords
edwp
onu
wavelength
olt
message
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.)
Granted
Application number
CN201911374586.7A
Other languages
Chinese (zh)
Other versions
CN111131934B (en
Inventor
胡兆祥
何金亮
江国舟
王培佩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Yangtze Optical Technology Co ltd
Original Assignee
Wuhan Yangtze Optical Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Yangtze Optical Technology Co ltd filed Critical Wuhan Yangtze Optical Technology Co ltd
Priority to CN201911374586.7A priority Critical patent/CN111131934B/en
Publication of CN111131934A publication Critical patent/CN111131934A/en
Application granted granted Critical
Publication of CN111131934B publication Critical patent/CN111131934B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

An extended wavelength allocation method based on a PON system comprises the following steps: s1, the OLT device at the local side of the G/EPON sends an EDWP REQ message to the ONU device at the terminal through OAM or OMCC; s2, after receiving the EDWP REQ message, the ONU equipment analyzes the EDWP REQ message, selects a sub-wavelength set T1 supported by the ONU from a wavelength set T0 given by the EDWP REQ message, assembles and sends an EDWP RSP message as a reply message to the OLT equipment; s3, after receiving the EDWP RSP message replied by the ONU, the OLT equipment selects a unique wavelength value from the sub-wavelength set T1, assembles and sends the EDWP INFO message to the ONU equipment; and S4, after receiving the EDWP INFO message, the ONU equipment analyzes and identifies the wavelength value appointed by the OLT equipment. The invention enables the OLT and the ONU to negotiate a communication wavelength channel through a software protocol; OLT dynamically allocates wavelength resources; the ONU in various forms is allowed to coexist, the general new G/EPON ONU is not influenced, and the working mode can be actively selected for the ONU supporting the multi-wavelength working capability.

Description

Extended wavelength allocation method based on PON system
Technical Field
The invention relates to the field of G/EPON communication access networks, in particular to an extended wavelength allocation method based on a PON system.
Background
The existing technologies such as WDM-PON have the disadvantages of high cost due to the technical requirements of WDM architecture on wavelength division multiplexing and demultiplexing and the high index requirements of a terminal colorless optical device, so that the existing large-scale commercial G/EPON equipment in the field of access networks still exists.
Disclosure of Invention
The invention aims to solve the technical problem that aiming at the current access network field, the complexity and cost factors of DWM-PON technology and the like are limited, a PON system-based extended wavelength allocation method is provided, and the purpose is to realize the dynamic negotiation of optical wavelength channels in a software protocol agreed mode on the G/EPON prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an extended wavelength allocation method based on a PON system comprises the following steps:
s1, the OLT device at the local side of the G/EPON sends an EDWP REQ message to the ONU device at the terminal through OAM or OMCC;
s2, after receiving the EDWP REQ message, the ONU equipment analyzes the EDWP REQ message, selects a sub-wavelength set T1 supported by the ONU from a WAVE SETS wavelength set T0 of the EDWP REQ message, assembles and sends an EDWP RSP message which is a reply message to the OLT equipment;
s3, after receiving the EDWP RSP message replied by the terminal ONU equipment, the OLT equipment selects a unique wavelength value T from the sub-wavelength collection T1, assembles and sends the EDWP INFO message to the terminal ONU equipment;
and S4, after receiving the EDWP INFO message, the ONU equipment analyzes and identifies the wavelength value T, and then assembles and sends an EDWP ACK message to the OLT equipment to complete the wavelength allocation process.
According to the above scheme, in step S1, the EDWP REQ message sent by the G/EPON local side OLT device to the terminal ONU device includes the following fields:
1) OPCODE _ TYPE: value 0x01, type EDWP REQ;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the OLT equipment supports an EDWP (extended wavelength distribution protocol);
FALSE: the OLT device does not support the EDWP (extended wavelength distribution protocol);
3) SUPPORT _ OPTION: selecting an attribute option;
4) WAVE _ SETS: an integer array, whose content is the wavelength number supported by the OLT equipment, C band 1530-1565 nm. The protection interval is 0.4nm, and the value meaning is as follows:
indexing Numbering Value of central wavelength
1 1 1530nm
2 1 153.4nm
……… ……… ………
80 80 1562nm
。
According to the above scheme, in step S2, the terminal ONU device replies the EDWP RSP message to the OLT device, where the fields include the following contents:
1) OPCODE _ TYPE: taking the value of 0x02 and the type EDWP RSP;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the ONU equipment supports an EDWP (extended wavelength distribution protocol);
FALSE: the ONU equipment does not support the EDWP (extended wavelength distribution protocol);
3) SUPPORT _ OPTION: the values of the multiplexing structure variables are different according to the value of the SUPPORT _ FLAG, and are respectively described as follows:
when the SUPPORT _ FLAG is TRUE, the field is the capacity of the subsequent WAVE _ substets;
when the SUPPORT _ FLAG is FALSE, the field is the relevant reason or the status code;
4) WAVE _ SUBSETS: an integer array, the content of which is a subset of a WAVE _ SETS band set in the EDWP REQ message issued by the OLT device and supported by the terminal ONU device:
indexing Numbering Value of central wavelength
1 1 1530nm
2 1 153.4nm
……… ……… ………
80 80 1562nm
。
According to the above scheme, in step S3, the EDWP INFO message sent by the OLT device at the local side of the G/EPON to the ONU device includes the following fields:
1) OPCODE _ TYPE: taking the value of 0x03 and the type of EDWP INFO;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the OLT equipment supports a WAVE _ SUBSETS set, and the negotiation is successful;
FALSE: the OLT equipment does not support the WAVE _ SUBSETS set, and the negotiation fails;
3) WAVE _ channel: and the OLT equipment finally selects the wavelength channel number.
According to the above scheme, in step S4, the fields of the EDWP ACK message sent by the G/EPON local side OLT device to the ONU include the following:
1) OPCODE _ TYPE: taking the value of 0x04, and the type is EDWP ACK;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the ONU equipment supports the WAVE _ SUBSETS set, and the negotiation is successful;
FALSE: the ONU equipment does not support the WAVE _ SUBSETS set, and the negotiation fails;
3) WAVE _ channel: and the ONU equipment finally selects the wavelength channel number.
The working principle of the invention is as follows:
1. aiming at the requirement of the prior WDM technology on an ONU colorless optical device, the invention carries out the negotiation of a wavelength channel between the local OLT and the terminal ONU in a software negotiation mode, and the ONU can actively switch a laser to work at a specific wavelength according to the negotiation result, so that the ONU only needs to work at a certain wavelength channel at the same time, and the technical realization difficulty is reduced;
2. due to the technical limitation of the G/EPON, the maximum supportable wavelength range on a single PON port of the local side OLT equipment can be divided into 64 1550nm wave bands commonly used by the DWM at present, namely T0, T1, … and T63, the OLT equipment is responsible for maintaining the use states of the wave bands, and lasers on the terminal ONU equipment can respectively work in the certain wavelength range according to a set value without colorless support;
3. when the dynamic discovery is completed through standard IEEE802.3 OAM or ITU-T OMCC channel before the local OLT and the terminal ONU according to the G/EPON system, the negotiation of a new wavelength channel is carried out according to the EDWP described by the invention, the local OLT issues all idle wavelength information supported by the local OLT, the terminal ONU notifies the wavelength information supported by the terminal ONU according to the condition supported by the terminal ONU, and finally the OLT issues the ONU according to the wavelength channel supported by both sides together through OAM/OMCC message and notifies both sides to carry out the communication wavelength channel switching.
Compared with the prior art, the invention has the following beneficial effects:
1. the method of the invention enables the OLT and the ONU to negotiate a communication wavelength channel by a software protocol method;
2. by the method, the local side OLT equipment can actively control the wavelength set of the application and the terminal ONU, so that the local side OLT can dynamically allocate wavelength resources according to the use conditions of different wavelengths or resource strategies and the like;
3. the method allows the coexistence of the terminal ONU with various forms, has no influence on the general new G/EPON ONU, and can actively select the working mode according to the self capability or the service state of the ONU supporting the multi-wavelength working capability.
Drawings
Fig. 1 is a schematic diagram of an extended wavelength allocation method based on a PON system according to the present invention.
Detailed Description
The principles and features of this invention are further described in conjunction with the following drawings, the examples given are intended to illustrate the invention and not to limit the scope of the invention.
As shown in fig. 1, the method for allocating extended wavelengths based on a PON system according to an embodiment of the present invention includes the following steps:
s1, the OLT device at the local side of the G/EPON sends an EDWP REQ message to the ONU device at the terminal through OAM or OMCC;
the EDWP REQ message field comprises the following contents:
1) OPCODE _ TYPE: value 0x01, type EDWP REQ;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the OLT equipment supports an EDWP (extended wavelength distribution protocol);
FALSE: the OLT device does not support the EDWP (extended wavelength distribution protocol);
3) SUPPORT _ OPTION: selecting an attribute option;
4) WAVE _ SETS: an integer array, whose content is the wavelength number supported by the OLT equipment, C band 1530-1565 nm. The protection interval is 0.4nm, and the value meaning is as follows:
indexing Numbering Value of central wavelength
1 1 1530nm
2 1 153.4nm
……… ……… ………
80 80 1562nm
S2, after receiving the EDWP REQ message, the ONU equipment analyzes the EDWP REQ message, selects a sub-wavelength set T1 supported by the ONU from a WAVE SETS wavelength set T0 of the EDWP REQ message, assembles and sends an EDWP RSP message which is a reply message to the OLT equipment;
the EDWP RSP message field comprises the following contents:
1) OPCODE _ TYPE: taking the value of 0x02 and the type EDWP RSP;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the ONU equipment supports an EDWP (extended wavelength distribution protocol);
FALSE: the ONU equipment does not support the EDWP (extended wavelength distribution protocol);
3) SUPPORT _ OPTION: the values of the multiplexing structure variables are different according to the value of the SUPPORT _ FLAG, and are respectively described as follows:
when the SUPPORT _ FLAG is TRUE, the field is the capacity of the subsequent WAVE _ substets;
when the SUPPORT _ FLAG is FALSE, the field is the relevant reason or the status code;
4) WAVE _ SUBSETS: an integer array, the content of which is a subset of a WAVE _ SETS band set in the EDWP REQ message issued by the OLT device and supported by the terminal ONU device:
indexing Numbering Value of central wavelength
1 1 1530nm
2 1 153.4nm
……… ……… ………
80 80 1562nm
S3, after receiving the EDWP RSP message replied by the terminal ONU equipment, the OLT equipment selects a unique wavelength value T from the sub-wavelength collection T1, assembles and sends the EDWP INFO message to the terminal ONU equipment;
the EDWP INFO message field comprises the following contents:
1) OPCODE _ TYPE: taking the value of 0x03 and the type of EDWP INFO;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the OLT equipment supports a WAVE _ SUBSETS set, and the negotiation is successful;
FALSE: the OLT equipment does not support the WAVE _ SUBSETS set, and the negotiation fails;
3) WAVE _ channel: the number of the wavelength channel finally selected by the OLT equipment is numbered;
s4, after receiving the EDWP INFO message, the ONU equipment analyzes and identifies the wavelength value T, and then assembles and sends an EDWP ACK message to the OLT equipment to complete the wavelength distribution process;
the EDWP ACK message field comprises the following contents:
1) OPCODE _ TYPE: taking the value of 0x04, and the type is EDWP ACK;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the ONU equipment supports the WAVE _ SUBSETS set, and the negotiation is successful;
FALSE: the ONU equipment does not support the WAVE _ SUBSETS set, and the negotiation fails;
3) WAVE _ channel: and the ONU equipment finally selects the wavelength channel number.
Aiming at the requirement of the prior WDM technology for colorless optical devices of terminal ONU equipment, the method of the invention carries out the negotiation of wavelength channels between the local side equipment OLT and the terminal equipment ONU in a software negotiation mode, and the ONU can actively switch the laser to work at a specific wavelength according to the negotiation result, so that the ONU only needs to work at a certain wavelength channel at the same time, thereby reducing the technical realization difficulty.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. An extended wavelength allocation method based on a PON system is characterized by comprising the following steps:
s1, the OLT device at the local side of the G/EPON sends an EDWP REQ message to the ONU device at the terminal through OAM or OMCC;
s2, after receiving the EDWP REQ message, the ONU equipment analyzes the EDWP REQ message, selects a sub-wavelength set T1 supported by the ONU from a WAVE SETS wavelength set T0 of the EDWP REQ message, assembles and sends an EDWP RSP message which is a reply message to the OLT equipment;
s3, after receiving the EDWP RSP message replied by the terminal ONU equipment, the OLT equipment selects a unique wavelength value T from the sub-wavelength collection T1, assembles and sends the EDWP INFO message to the terminal ONU equipment;
and S4, after receiving the EDWP INFO message, the ONU equipment analyzes and identifies the wavelength value T, and then assembles and sends the EDWPACK message to the OLT equipment to complete the wavelength allocation process.
2. The PON system-based extended wavelength allocation method according to claim 1, wherein in step S1, the G/EPON central office OLT apparatus sends an EDWP REQ message to the end ONU apparatus, and the fields of the EDWP REQ message include the following:
1) OPCODE _ TYPE: value 0x01, type EDWP REQ;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the OLT equipment supports an EDWP (extended wavelength distribution protocol);
FALSE: the OLT device does not support the EDWP (extended wavelength distribution protocol);
3) SUPPORT _ OPTION: selecting an attribute option;
4) WAVE _ SETS: an integer array, whose content is the wavelength number supported by the OLT equipment, C band 1530-1565 nm. The protection interval is 0.4nm, and the value meaning is as follows:
indexing Numbering Value of central wavelength 1 1 1530nm 2 1 153.4nm ……… ……… ……… 80 80 1562nm
。
3. The PON system-based extended wavelength allocation method according to claim 1, wherein in step S2, the terminal ONU device replies an EDWP RSP message to the OLT device, and fields of the EDWP RSP message include the following:
1) OPCODE _ TYPE: taking the value of 0x02 and the type EDWP RSP;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the ONU equipment supports an EDWP (extended wavelength distribution protocol);
FALSE: the ONU equipment does not support the EDWP (extended wavelength distribution protocol);
3) SUPPORT _ OPTION: the values of the multiplexing structure variables are different according to the value of the SUPPORT _ FLAG, and are respectively described as follows:
when the SUPPORT _ FLAG is TRUE, the field is the capacity of the subsequent WAVE _ substets;
when the SUPPORT _ FLAG is FALSE, the field is the relevant reason or the status code;
4) WAVE _ SUBSETS: an integer array, the content of which is a subset of a WAVE _ SETS band set in the EDWPREQ message issued by the OLT device and supported by the terminal ONU device:
indexing Numbering Value of central wavelength 1 1 1530nm 2 1 153.4nm ……… ……… ……… 80 80 1562nm
。
4. The PON system-based extended wavelength allocation method according to claim 1, wherein in step S3, the G/EPON central office OLT apparatus sends an EDWP INFO message to the ONU apparatus, and the fields of the EDWP INFO message include the following:
1) OPCODE _ TYPE: taking the value of 0x03 and the type of EDWP INFO;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the OLT equipment supports a WAVE _ SUBSETS set, and the negotiation is successful;
FALSE: the OLT equipment does not support the WAVE _ SUBSETS set, and the negotiation fails;
3) WAVE _ channel: and the OLT equipment finally selects the wavelength channel number.
5. The PON system-based extended wavelength allocation method according to claim 1, wherein in step S4, the G/EPON central office OLT apparatus sends an EDWP ACK message to the ONU, and the fields of the EDWP ACK message include the following contents:
1) OPCODE _ TYPE: taking the value of 0x04, and the type is EDWP ACK;
2) SUPPORT _ FLAG: the BOOL variable, its value meaning:
TURE: the ONU equipment supports the WAVE _ SUBSETS set, and the negotiation is successful;
FALSE: the ONU equipment does not support the WAVE _ SUBSETS set, and the negotiation fails;
3) WAVE _ channel: and the ONU equipment finally selects the wavelength channel number.
CN201911374586.7A 2019-12-27 2019-12-27 Extended wavelength allocation method based on PON system Active CN111131934B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911374586.7A CN111131934B (en) 2019-12-27 2019-12-27 Extended wavelength allocation method based on PON system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911374586.7A CN111131934B (en) 2019-12-27 2019-12-27 Extended wavelength allocation method based on PON system

Publications (2)

Publication Number Publication Date
CN111131934A true CN111131934A (en) 2020-05-08
CN111131934B CN111131934B (en) 2022-03-18

Family

ID=70503816

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911374586.7A Active CN111131934B (en) 2019-12-27 2019-12-27 Extended wavelength allocation method based on PON system

Country Status (1)

Country Link
CN (1) CN111131934B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115348490A (en) * 2022-10-18 2022-11-15 武汉长光科技有限公司 Method for dynamically scheduling service wavelength channel and related device

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101621723A (en) * 2009-08-12 2010-01-06 烽火通信科技股份有限公司 Wavelength allocation method of WDM-PON system
EP2141843A1 (en) * 2008-06-30 2010-01-06 Alcatel Lucent Generation of a wavelength allocation offer for a connection
CN101715150A (en) * 2009-11-16 2010-05-26 赵季红 Wavelength assignment algorithm with capacity relative minimum influence
CN101925130A (en) * 2009-06-16 2010-12-22 中兴通讯股份有限公司 Transmission method of multi-carrier wave configuration information and secondary carrier wave allocation method
CN101989947A (en) * 2009-08-07 2011-03-23 华为技术有限公司 Associated channel capability negotiation method and network device
CN102104812A (en) * 2009-12-22 2011-06-22 华为技术有限公司 Method for automatically selecting wavelength and optical module
CN102388557A (en) * 2011-09-22 2012-03-21 华为技术有限公司 Wavelength distribution method in optical communication system, optical network unit and optical network system
CN103281618A (en) * 2013-06-19 2013-09-04 苏州彩云飞电子有限公司 Multi-wavelength passive optical network system
WO2013189322A1 (en) * 2012-11-23 2013-12-27 中兴通讯股份有限公司 Registration activation method, system and device for optical network unit
CN103650422A (en) * 2012-07-13 2014-03-19 华为技术有限公司 Wavelength negotiation method, system, and device for multi-wavelength passive optical network
US20140186037A1 (en) * 2012-12-30 2014-07-03 Telefonaktiebolaget L M Ericsson (Publ) Optical port discovery in a wdm optical network
CN104822167A (en) * 2015-04-15 2015-08-05 宇龙计算机通信科技(深圳)有限公司 Selecting method for switching NFC carriers, device and system thereof
CN104995898A (en) * 2014-02-19 2015-10-21 华为技术有限公司 Method, device and system for establishing data channel

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2141843A1 (en) * 2008-06-30 2010-01-06 Alcatel Lucent Generation of a wavelength allocation offer for a connection
CN101925130A (en) * 2009-06-16 2010-12-22 中兴通讯股份有限公司 Transmission method of multi-carrier wave configuration information and secondary carrier wave allocation method
CN101989947A (en) * 2009-08-07 2011-03-23 华为技术有限公司 Associated channel capability negotiation method and network device
CN101621723A (en) * 2009-08-12 2010-01-06 烽火通信科技股份有限公司 Wavelength allocation method of WDM-PON system
CN101715150A (en) * 2009-11-16 2010-05-26 赵季红 Wavelength assignment algorithm with capacity relative minimum influence
CN102104812A (en) * 2009-12-22 2011-06-22 华为技术有限公司 Method for automatically selecting wavelength and optical module
CN102388557A (en) * 2011-09-22 2012-03-21 华为技术有限公司 Wavelength distribution method in optical communication system, optical network unit and optical network system
CN103650422A (en) * 2012-07-13 2014-03-19 华为技术有限公司 Wavelength negotiation method, system, and device for multi-wavelength passive optical network
WO2013189322A1 (en) * 2012-11-23 2013-12-27 中兴通讯股份有限公司 Registration activation method, system and device for optical network unit
US20140186037A1 (en) * 2012-12-30 2014-07-03 Telefonaktiebolaget L M Ericsson (Publ) Optical port discovery in a wdm optical network
CN103281618A (en) * 2013-06-19 2013-09-04 苏州彩云飞电子有限公司 Multi-wavelength passive optical network system
CN104995898A (en) * 2014-02-19 2015-10-21 华为技术有限公司 Method, device and system for establishing data channel
CN104822167A (en) * 2015-04-15 2015-08-05 宇龙计算机通信科技(深圳)有限公司 Selecting method for switching NFC carriers, device and system thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
朱正华: "运维护航 10G EPON乘风破浪会有时", 《通信世界》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115348490A (en) * 2022-10-18 2022-11-15 武汉长光科技有限公司 Method for dynamically scheduling service wavelength channel and related device

Also Published As

Publication number Publication date
CN111131934B (en) 2022-03-18

Similar Documents

Publication Publication Date Title
US10432340B2 (en) Optical port auto-negotiation method, optical module, central office end device, and terminal device
US20140233954A1 (en) Link establishment method for multi-wavelength passive optical network system
AU2012385350B2 (en) Wavelength negotiation method and apparatus of multi-wavelength passive optical network, and multi-wavelength passive optical network system
JP6445706B2 (en) Communication method, apparatus, and system applied to multi-wavelength passive optical network
US10652635B2 (en) Passive optical network communications method and apparatus, and system
JP4006475B2 (en) WDM type PON system
CN106537826A (en) Communication method, apparatus and system for passive optical network
CN102820943B (en) Wavelength management method between OLT (optical line terminal) and ONU (optical network unit) in TWDM-PON (time wavelength division multiplexing-passive optical network)
US9860011B2 (en) Method and apparatus for selecting wavelength in hybrid passive optical network system
JP2015530812A (en) Method for supporting transfer of optical network units between passive optical networks
CN111131934B (en) Extended wavelength allocation method based on PON system
US8787761B2 (en) Multi-service provisioning in orthogonal frequency division multiplexing-passive optical network OFDMA-PON
WO2013189321A1 (en) Tuning method, system and device for wavelength in passive optical network
CN111064542B (en) Method for dynamically allocating wavelength based on PON system
EP4040746A1 (en) Passive optical network-based communication method, related device, and system
CN110858779B (en) ONU channel processing method, device and computer readable storage medium
EP2924902A1 (en) Method and system for tuning operating wavelength
CN106470366B (en) Channel configuration method and device
JP2013016968A (en) Station side device, optical communication network, and power supply control method
CN108574888B (en) PON channel establishing method, ONU, OLT and system
WO2013053243A1 (en) Bandwidth sharing method, device, and system
ZHANG et al. Higher Speed Passive Optical Networks for Low Latency Services
JP2019068198A (en) Station side device and optical access network
JP7063349B2 (en) Resource allocation device, resource allocation program, resource allocation method and station side device
Chen et al. Centralized Wi-Fi Access Networks over OFDM-PON with Joint System Load-based Resource Scheduling

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant