CN105721963B - The method that exceeded limit number ONU is connect with EPON OLT - Google Patents
The method that exceeded limit number ONU is connect with EPON OLT Download PDFInfo
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
- H04L47/762—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions triggered by the network
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Abstract
The present invention on OLT by saving ONU allocation list and free time ONU table, pass through the continuous circulation searching free time ONU resource of timer, and it is marked respectively and dynamically recording, realize a kind of mechanism that free time ONU resource dynamic is recycled and redistributed, the be above standard ONU of limitation is allowed to seize the resource of idle ONU, to carry normal broadband services.Solve the problems, such as to encounter in FTTH business a section user only exceed it is a small amount of user's and do not have to add additional PON mouth, avoid the puzzlement of deployment laying optical fiber again, reduce the equipment cost and construction maintenance cost of operator.
Description
Technical field
The present invention relates to broadband access technology field, more particularly, to EPON (Ethernet Passive Optical
Network, Ethernet passive optical network) system OLT (Optical Line Terminal optical line terminal) interconnection technique.
Background technique
PON system is by OLT and ONU (Optical Network Unit, optical network unit；Also ONT, Optical are
Network Terminal, passive light network terminal.The two is the same object herein) composition, towards domestic consumer, enterprise
Industry, public institution, government provide FTTX (Fiber to the X, X can be Home, building, Cabinet, fiber to the floor,
Fiber to the home, Fiber To The Curb) service.OLT is the terminal device for connecting fiber optic backbone as optical line terminal.OLT energy
It is enough that Ethernet data is sent to ONU with broadcast mode.ONU is usually located at user's family or corridor, OLT as soft exchange terminal
As soft exchange terminal, it is usually located at telecommunications room, roadside cross-connecting box, building computer room.ODN is (point-to-multipoint) knot of a P2MP
The Passive Optical Components network of structure can be connected an OLT and multiple ONU by the splitting ratio of 1:N.
The maximum splitting ratio that the splitting ratio of 1:N can actually be supported at present is 1:64, the current single PON of EPON OLT
The supported maximum ONU number of (Passive Optical Network passive optical network) mouth is 64 (EPON standard IEEEs
The 64th chapter of 802.3-2005), the registration behavioral standard of off-limits ONU is simultaneously undefined.And have in the development of the business of FTTH
Encounter a building or section beyond 64 family users and only beyond a small amount of user the case where.At this time if it is exceed this
Newly-increased one PON mouthfuls of several users, optical fiber will be disposed again, increase operator equipment purchase cost and construction maintenance at
This.
Summary of the invention
The present invention proposes ONU of the one kind on a small quantity beyond standard limitation for above situation and connect with PON mouthfuls, and carries out just
The method often registered, when ONU number for being deployed in a region is limited more than PON mouthfuls, a small amount of ONU exceeded can not have to newly
In the case where increasing one PON mouthfuls and other fiber resources, to provide broadband access network business more than the user that number limits.
The method that ONU and the EPON OLT of exceeded limit number of the present invention connect connection, comprising the following steps:
Step 1: following data table items are saved on OLT,
ONU allocation list: the configuration data table of all configured ONU,
Idle ONU table: including all configured but idle not used ONU list,
Step 2:OLT is after electrifying startup, and system enables timer T1, to wait in all ONU registrations accessed
Line, during this period, system can generate each data table items according to configuration file；The timer time of T1 is defaulted as 5 minutes, is used for
Wait all ONU online；
Step 3, after timer T1 is overtime, system starts another timer T2, and timer T2 main program, which can recycle, to be looked into
ONU allocation list is looked for, available free ONU is added in idle ONU list item；
ONU and the ONU not occupied by exceeded ONU configuration flag bit are 1 in standard, and inquiry state judges whether to be added to sky
Not busy ONU list；It is not 1 that ONU, which configures flag bit, i.e. ONU is that exceeded ONU is either occupied by exceeded ONU, then does not have to check straight
It connects and skips；
Step 4, after OLT starts successfully, PON mouthfuls of lasers can be opened, and ONU will receive the downlink optical signal of OLT transmission, this
When can enter and register online process flow；
Step 5, if reporting information to have found configuration list item according to ONU in step 4, list item information is read, checks ONU
Configure flag bit, if it is 1, explanation is common ONU, does online processing to ONU, distribute ONU resource, amendment ONU state be
ONU on-line time is written in line；It is reversed to search free time ONU list；If having found identical data in idle ONU list
This ONU is then removed from idle ONU list, shows that the ONU is used by ONU；
Step 6, if in step 5, in the configuration list item of reading, the configuration flag bit of ONU is 2, then illustrates that this ONU is super
ONU is marked, the resource for needing temporarily to borrow common ONU is online；Entire free time ONU list is traversed, is found out identical with this position ONU
Idle ONU；If searching failure, illustrate that no free time ONU, the ONU can not temporarily be registered online at this time, sent deactivation and disappeared
Breath；
Step 7, if in step 6, free time ONU list is traversed, has found idle ONU, exceeded ONU registration is online, by this
ONU is removed from idle ONU list；The status information updated in exceeded ONU allocation list is online；
Step 8, if in step 5, in the configuration list item of reading, the configuration flag bit of ONU is 3, illustrates that this ONU is common
ONU, but resource is occupied by exceeded ONU.The LLID data in ONU allocation list are read, is sent to this LLID and deactivates message, released
Put resource；The ONU is online according to normal flow simultaneously, updates ONU allocation list, and ONU configuration flag bit is revised as 1；
Step 9, offline ONU processing: after software receives chip layer report and alarm, ONU allocation list is searched, ONU is updated and matches
Setting the presence data in table is offline, release resource；ONU configuration flag bit is extracted simultaneously, if configuration flag bit is 1,
Free time ONU list directly then is added in this ONU information, processing terminate；If configuring flag bit is 2, without especially processing.
Wherein ONU allocation list include table index, frame position number, slot number, PON port numbers, ONU-ID, busy flag, ONU's
Logic ID, the MAC Address of ONU, the description information of ONU, the IP address of ONU, the upstream bandwidth of ONU, the downlink bandwidth of ONU, ONU
Presence mark, the downtime of ONU, the offline reason of ONU, the alarm zone bit information of ONU；
Wherein free time ONU table mainly includes index, the MAC Address of ONU-ID, ONU, the idle-type information of ONU；
In step 3, when timer T2 circulation searching ONU allocation list, ONU configure flag bit be 1 and ONU it is online
State is offline, then the corresponding information of this ONU to be added to inside idle ONU list, idle-type 1-DEAD, and expression is not opened
Machine；If the presence that ONU configuration flag bit is 1 and ONU is online, further to pass through OAM (Operation
Administration and Maintenance, Operations, Administration and Maintenance) information query ONU user side MAC Address；Such as
The user side of fruit ONU has MAC Address, then illustrates that ONU is used, and continues checking next list item in ONU allocation list；If
ONU user side MAC address free illustrates although this ONU is powered on, but is not used by, the information of this ONU is also added free time ONU's
In list item, idle marker position is 2, is expressed as IDLE, that is, indicates idle；It is not 1 that ONU, which configures flag bit, i.e. ONU is exceeded
It ONU or is occupied by exceeded ONU, is directly skipped without checking；
In the online process flow of registration of step 4, information, the OLT such as ONU meeting reporting MAC address are identified where ONU
ONU allocation list, which is searched, further according to mac address information after frame, slot and port numbers illustrates that this ONU is not pre- if list item can not be found
Configuration, prompt alarm；
In step 7, when traversal free time ONU list, idle ONU is had found, preferentially selects idle-type for DEAD's
ONU reads list item information, extracts the ONU-ID of Logical link ID information therein He free time ONU, mac address information is simultaneously
This ONU is removed from idle ONU list；The Logical link ID extracted is online for exceeded ONU registration, updates exceeded
Status information in ONU allocation list is online；ONU-ID, MAC Address update ONU configuration for searching ONU allocation list, after finding
ONU configuration flag bit in table is 3, and updating LLID (Logical link identify, Logical link ID) is abovementioned steps
The LLID of middle free time ONU；
In step 8, when ONU configuration flag bit is 3, then it represents that common ONU occupies resource by exceeded ONU, this
When according to frame number, slot number, port numbers and ONU MAC Address search ONU allocation list, read allocation list in LLID data, to
This LLID, which is sent, deactivates message, discharges resource.The ONU is online according to normal flow simultaneously, updates ONU allocation list, ONU configuration
Flag bit is revised as 1.
The present invention realizes a kind of mechanism that free time ONU resource dynamic is recycled and redistributed, so that the limitation that is above standard
ONU can seize the resource of idle ONU, to carry normal broadband services.It solves and encounters a piece in FTTH business
Area user only exceeds a small amount of user and does not have to the problem of adding additional PON mouth, avoids deployment again and is laid with the tired of optical fiber
It disturbs, reduces the equipment cost and construction maintenance cost of operator.
Specific embodiment
Below in conjunction with a specific embodiment of the invention, the present invention is further described in detail.
The present invention realizes a kind of mechanism that free time ONU resource dynamic is recycled and redistributed.So that being limited beyond standard
ONU can seize the resource of idle ONU, to carry normal broadband services.
Include the following steps:
Step 1, following data table items are saved on OLT:
ONU allocation list: the configuration data table of all configured ONU includes table index, frame position number, slot number, the end PON
Slogan, ONU-ID (ONU mark), busy flag, the logic ID of ONU, the MAC Address of ONU, the description information of ONU, the IP of ONU
Address, the upstream bandwidth of ONU, the downlink bandwidth of ONU, ONU presence mark, the downtime of ONU, the offline reason of ONU,
The information such as the alarm flag bit of ONU.System initial stage, the presence of all ONU are all offline that other data are according to configuration
It automatically generates.
Please refer to table 1:ONU allocation list
Table 1
Idle ONU table: main to include index, ONU-ID, ONU comprising all configured but idle not used ONU list
MAC Address, the information such as idle-type of ONU.List is empty by free time initial stage ONU.
Please refer to table 2: idle ONU table
Table 2
Step 2, OLT is after electrifying startup, and system enables timer T1, to wait in all ONU registrations accessed
Line.During this period, system can generate each list item data according to configuration file.The timer time of T1 is defaulted as 5 minutes, is used for
Wait all ONU online.
Step 3, after timer T1 is overtime, system starts another timer T2, this timer main program, which can recycle, to be looked into
Look for ONU allocation list, ONU configuration flag bit be 1 and ONU presence be it is offline, then the corresponding information of this ONU is added to
Inside idle ONU list, idle-type 1-DEAD indicates to be not keyed up；If it is 1 and ONU in threadiness that ONU, which configures flag bit,
State be it is online, then further by OAM (Operation Administration and Maintenance, operation, management and
Maintenance) information query ONU user side MAC Address.If the user side of ONU has MAC Address, illustrate that ONU is used, after
The continuous next list item checked in ONU allocation list；If ONU user side MAC address free illustrates although this ONU is powered on, but not by
It uses, also the information of this ONU is added in the list item of free time ONU, idle marker position is 2, is indicated IDLE (free time).ONU configuration
Flag bit is not 1, i.e. ONU is exceeded ONU or is occupied by exceeded ONU, is directly skipped without checking.
Step 4, after OLT starts successfully, PON mouthfuls of lasers can be opened, and ONU will receive the downlink optical signal of OLT transmission, this
When can enter and register online process flow.Information, the OLT such as ONU meeting reporting MAC address are identified where ONU in registration process
ONU allocation list, which is searched, further according to mac address information after frame, slot and port numbers illustrates that this ONU is not pre- if list item can not be found
Configuration, prompt alarm.
Step 5, if reporting information to have found configuration list item according to ONU in step 4, list item information is read, checks ONU
Configure flag bit, if it is 1, explanation is common ONU, does online processing to ONU, distribute ONU resource, amendment ONU state be
ONU on-line time is written in line.Further according to frame number, the slot number where ONU, the MAC of PON port numbers and ONU-ID, ONU
Location is gone reversely to search free time ONU list.If having found the ONU of identical data in idle ONU list, by this ONU from sky
It is removed in not busy ONU list.
Step 6, if in step 5, in the configuration list item of reading, the configuration flag bit of ONU is 2, then illustrates that this ONU is super
ONU is marked, the resource for needing temporarily to borrow common ONU is online.At this time according to the frame number where ONU, slot number, port numbers traversal is entirely
Free time ONU identical with this position ONU is found out in idle ONU list.If searching failure, illustrate at this time without free time ONU, it should
ONU can not temporarily register online, transmission deactivation message.
Step 7, if in step 6, traverse free time ONU list, have found idle ONU, it is preferential select idle-type for
The ONU of DEAD reads list item information, extracts the ONU-ID of Logical link ID information therein He free time ONU, MAC Address
Information simultaneously removes this ONU from idle ONU list.The Logical link ID extracted is online for exceeded ONU registration, more
Status information in new exceeded ONU allocation list is online；ONU-ID, MAC Address update after finding for searching ONU allocation list
ONU configuration flag bit in ONU allocation list is 3, and updating LLID (Logical link identify, Logical link ID) is
The LLID of free time ONU in abovementioned steps.
Step 8, if in step 5, in the configuration list item of reading, the configuration flag bit of ONU is 3, illustrates that this ONU is common
ONU, but resource is occupied by exceeded ONU.ONU configuration is searched according to frame number, slot number, port numbers and ONU MAC Address at this time
Table reads the LLID data in allocation list, sends to this LLID and deactivates message, discharges resource.The ONU is according to normal stream simultaneously
Journey is online, updates ONU allocation list, and ONU configuration flag bit is revised as 1.
Step 9, offline ONU processing.After software receives chip layer report and alarm, according to frame number, slot number, port numbers and
ONUID searches ONU allocation list, and updating the presence data in ONU allocation list is offline, release resource.ONU is extracted simultaneously to match
Flag bit is set, if configuration flag bit is 1, free time ONU list directly is added in this ONU information.Processing terminate.If configuration
Flag bit is 2, then without especially processing.
The present invention realizes a kind of mechanism that free time ONU resource dynamic is recycled and redistributed, so that the limitation that is above standard
ONU can seize the resource of idle ONU, to carry normal broadband services.It solves and encounters a piece in FTTH business
Area user only exceed it is a small amount of user's and do not have to the problem of adding additional PON mouth, avoid deployment laying optical fiber again
Puzzlement, reduces the equipment cost and construction maintenance cost of operator.
The above is only present pre-ferred embodiments, is not intended to limit the present invention in any form, although
The present invention is disclosed above in the preferred embodiment, and however, it is not intended to limit the invention, any person skilled in the art,
It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent
The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, technology refers to according to the present invention implements to above
Any simple modification, equivalent change and modification made by example, belong in the range of technical solution of the present invention.
Claims (6)
1. a kind of method that exceeded limit number ONU is connect with EPON OLT, comprising the following steps:
Step 1: following data table items are saved in optical line terminal OLT,
Optical network unit ONU allocation list: the configuration data table of all configured ONU,
Idle ONU table: include all configured but idle not used ONU list；
For step 2:OLT after electrifying startup, system enables timer T1, to wait all ONU registrations accessed online,
During this, system can generate each data table items according to configuration file；The timer time of T1 is defaulted as 5 minutes, for waiting
All ONU are online；
Step 3, after timer T1 is overtime, system starts another timer T2, and timer T2 main program can circulation searching ONU
Available free ONU is added in idle ONU list item by allocation list；
ONU and the ONU not occupied by exceeded ONU configuration flag bit are 1 in standard, and inquiry state judges whether to be added to the free time
ONU list；It is not 1 that ONU, which configures flag bit, i.e. ONU is that exceeded ONU is either occupied by exceeded ONU, then does not have to check direct
It skips；
Step 4, after OLT starts successfully, PON mouthfuls of lasers can be opened, and ONU will receive the downlink optical signal of OLT transmission, at this time can
Into the online process flow of registration；
Step 5, if reporting information to have found configuration list item according to ONU in step 4, list item information is read, checks ONU configuration
Flag bit, if it is 1, explanation is common ONU, does online processing to ONU, distributes ONU resource, amendment ONU state be it is online, write
Enter ONU on-line time；It is reversed to search free time ONU list；It, will if having found the ONU of identical data in idle ONU list
This ONU is removed from idle ONU list, shows that the ONU is used；
Step 6, if in step 5, in the configuration list item of reading, the configuration flag bit of ONU is 2, then illustrates that this ONU is exceeded
ONU, the resource for needing temporarily to borrow common ONU are online；Entire free time ONU list is traversed, sky identical with this position ONU is found out
Not busy ONU；If searching failure, illustrate temporarily register online, transmission deactivation message without free time ONU, the ONU at this time；
Step 7, if in step 6, traverse free time ONU list, have found idle ONU, exceeded ONU register it is online, by this ONU from
It is removed in idle ONU list；The status information updated in exceeded ONU allocation list is online；
Step 8, if in step 5, in the configuration list item of reading, the configuration flag bit of ONU is 3, illustrates that this ONU is common ONU,
But resource is occupied by exceeded ONU, reads the LLID data in ONU allocation list, is sent to this LLID and deactivates message, release money
Source；The ONU is online according to normal flow simultaneously, updates ONU allocation list, and ONU configuration flag bit is revised as 1；
Step 9, offline ONU processing: after software receives chip layer report and alarm, ONU allocation list is searched, updates ONU allocation list
In presence data be it is offline, discharge resource；ONU configuration flag bit is extracted simultaneously, if configuration flag bit is 1, directly
It connects and free time ONU list is added in this ONU information, processing terminate；If configuring flag bit is 2, without especially processing.
2. the method that exceeded limit number ONU is connect with EPON OLT according to claim 1, which is characterized in that wherein ONU matches
Setting table includes table index, frame position number, slot number, PON port numbers, ONU-ID, busy flag, the logic ID of ONU, the MAC of ONU
Location, the description information of ONU, the IP address of ONU, the upstream bandwidth of ONU, the downlink bandwidth of ONU, ONU presence mark, ONU
Downtime, the offline reason of ONU, the alarm zone bit information of ONU；Wherein free time ONU table mainly includes index, ONU-
The MAC Address of ID, ONU, the idle-type information of ONU.
3. the method that exceeded limit number ONU is connect with EPON OLT according to claim 2, which is characterized in that in step 3
In, when timer T2 circulation searching ONU allocation list, ONU configuration flag bit be 1 and ONU presence be it is offline, then will
The corresponding information of this ONU is added to inside idle ONU list, and idle-type 1-DEAD indicates to be not keyed up；If ONU is configured
Flag bit is that the presence of 1 and ONU is online, then further to pass through OAM (Operation Administration and
Maintenance, Operations, Administration and Maintenance) information query ONU user side MAC Address；If the user side of ONU is with having MAC
Location then illustrates that ONU is used, and continues checking next list item in ONU allocation list；If ONU user side MAC address free,
Illustrate although this ONU is powered on, but be not used by, also the information of this ONU is added in the list item of free time ONU, idle marker 2-
IDLE indicates idle.
4. the method that exceeded limit number ONU is connect with EPON OLT according to claim 3, which is characterized in that in step 4
Register in online process flow, ONU can the information such as reporting MAC address, OLT identifies after frame, slot and port numbers where ONU again
ONU allocation list, which is searched, according to mac address information illustrates that this ONU is not pre-configured, prompt alarm if list item can not be found.
5. the method that exceeded limit number ONU is connect with EPON OLT according to claim 3, which is characterized in that in step 7
In, when traversal free time ONU list, idle ONU is had found, preferentially selects idle-type for the ONU of 1-DEAD, reads list item letter
Breath, extracts the ONU-ID of Logical link ID LLID information therein He free time ONU, mac address information and by this ONU from sky
It is removed in not busy ONU list；The Logical link ID LLID extracted is online for exceeded ONU registration, updates exceeded ONU configuration
Status information in table is online；ONU-ID, MAC Address update in ONU allocation list after finding for searching ONU allocation list
It is 3 that ONU, which configures flag bit, updates the Logical link ID number that Logical link ID LLID is free time ONU in abovementioned steps 7
LLID。
6. the method that exceeded limit number ONU is connect with EPON OLT according to claim 3, which is characterized in that in step 8
In, when ONU configuration flag bit is 3, then it represents that common ONU occupies resource by exceeded ONU, at this time according to frame number, slot position
Number, port numbers and ONU MAC Address search ONU allocation list, read the LLID data in allocation list.
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| CN110350973B (en) * | 2017-02-15 | 2020-10-27 | 金钱猫科技股份有限公司 | ONU equipment registration method for improving registration name use efficiency |
| CN112511918A (en) * | 2020-03-07 | 2021-03-16 | 中兴通讯股份有限公司 | Registration method and device, information writing method, optical line terminal and optical network unit |
| CN112165659B (en) * | 2020-09-21 | 2022-06-24 | 烽火通信科技股份有限公司 | ONU (optical network Unit) identification allocation method, device and equipment and readable storage medium |
| CN117835095A (en) * | 2023-11-27 | 2024-04-05 | 杭州润州光电技术有限公司 | Cluster ONU idle resource adjustment method and system |
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