WO2011120308A1 - Procédé d'enregistrement d'unité de réseau optique dans un système de réseau optique passif gigabit - Google Patents

Procédé d'enregistrement d'unité de réseau optique dans un système de réseau optique passif gigabit Download PDF

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Publication number
WO2011120308A1
WO2011120308A1 PCT/CN2010/079053 CN2010079053W WO2011120308A1 WO 2011120308 A1 WO2011120308 A1 WO 2011120308A1 CN 2010079053 W CN2010079053 W CN 2010079053W WO 2011120308 A1 WO2011120308 A1 WO 2011120308A1
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onu
mode
olt
serial number
registration
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PCT/CN2010/079053
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English (en)
Chinese (zh)
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吴军平
向东
安俊峰
李庆
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烽火通信科技股份有限公司
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Publication of WO2011120308A1 publication Critical patent/WO2011120308A1/fr

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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
    • 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

Definitions

  • the invention relates to a registration strategy of an ONU (Optical Network Unit) in a GPON (Gigabit Passive Optical Network) system, and in particular to a registration method of an ONU in a GPON system.
  • ONU Optical Network Unit
  • GPON Gigabit Passive Optical Network
  • the system As an access device, the system is directly connected to the client, and plays an important role in registering the ONU in the GPON system.
  • the existing registration technologies cannot implement the control of the ONU, that is, the legal and illegal users cannot be identified, and all connected ONUs are authorized, which may lead to illegal users. The emergence of this is not conducive to the operator's management of the user.
  • an object of the present invention is to provide a method for registering an ONU in a GPON system, which solves the existing method.
  • the control of the ONU cannot be implemented, and all connected ONUs are authorized, and the problem of legitimate and illegal users cannot be identified.
  • a method for registering an ONU in a GPON system comprising the steps of:
  • the GPON system first determines the access mode of the system configuration, when the access mode When Quiet_mode is used, the registration operation of the ONU is manually performed by the administrator: the administrator needs to know the serial number of the new ONU to be operated in advance, and then inform the PON chip in the OLT of the serial number of the new ONU, and let the OLT use the ONU. Perform the corresponding operation, and the underlying operation is implemented by the PON chip;
  • the OLT When access mode When the Polling_mode is used, the OLT periodically registers the ONU. In one cycle, the ONU registration process includes the following two steps:
  • the OLT automatically discovers the new ONU, and writes the serial number of the newly discovered ONU into the serial number discovery table;
  • the second step is the registration mode of the OLT according to the system configuration.
  • the serial number discovery table is filtered by using the corresponding control table.
  • the OLT does not perform the registration operation for the ONU that fails to be filtered.
  • the ONU that filters the filtering first performs ranging to obtain the equalization delay required to activate the ONU. After the success, and the ONU receives the Ranging_Time message sent by the OLT, the ONU is activated by the OLT, and establishes a communication channel between the activated ONU and the OLT. At this time, a round of ONU registration operation is completed.
  • the OLT waits for a period of time according to the value of the configured parameter interval, and then starts the next round of operation, and the number of rounds of the ONU registration process is determined by the configured parameter cycle.
  • the value of the parameter cycle is zero, it means an infinite loop; when the value of the parameter cycle is a positive integer and is not equal to one, the OLT first performs a round of ONU registration operation, and then the value of the parameter cycle is decremented by one, when the value of the parameter cycle is Equal to one hour, the number of rounds running on behalf of the registration process has been exhausted, and the GPON system automatically enters Quiet_mode.
  • the registration mode described in the second step includes:
  • NA_mode No authentication mode NA_mode.
  • the ONU can be activated without being authenticated.
  • the ONU can be activated.
  • the online ONU indicates all ONUs currently attached to the ODN.
  • the ONU indicates that the ONU is enabled. When the ONU is disabled, the ONU's laser is turned off and turned on when enabled.
  • serial number + password mode SP_mode in this mode, the OLT verifies the legality of the ONU according to the serial number of the ONU and the password PAS;
  • the control table in the second step includes a whitelist, a blacklist, and an error password table.
  • the NA_mode uses only the blacklist to filter the ONUs;
  • the SN_mode uses the blacklist and the whitelist to filter the ONUs.
  • the SP_mode uses the whitelist, the blacklist, and the incorrect password table to filter the ONUs, and the three registration modes share a blacklist to filter the ONUs.
  • the OLT determines, according to the configuration of the parameters visi_mode and auth_mode, which access mode and registration mode are currently used.
  • the blacklist is used to store the serial number of the illegal ONU.
  • the ONU whose serial number is in this table will be disabled.
  • the whitelist is used to store the serial number of the legal ONU, and the ONU whose serial number is in this table will be allowed to be ranged;
  • the error password table is automatically generated during the SP_mode password verification process.
  • the serial number of the ONU is placed in the error password table.
  • the OLT When the OLT detects a single ONU disconnection, the OLT automatically deletes the serial number of the ONU from the activation table and the serial number discovery table.
  • the OLT When the OLT detects all link breaks, the OLT automatically clears the entire serial number discovery table and activation table.
  • the method for the administrator to operate the ONU is:
  • the access mode is Quiet_mode
  • the ONU when the ONU is activated, The administrator informs the OLT of the ONU serial number, and causes the OLT to activate the ONU.
  • the OLT automatically measures the ONU to complete the activation of the ONU.
  • the OLT When the ONU is deactivated, The administrator informs the OLT of the ONU serial number, and causes the OLT to deactivate the ONU.
  • the OLT automatically sends a Deactive_ONU-ID message to deactivate the ONU.
  • the ONU When the ONU is disabled, The administrator informs the OLT of the ONU serial number, and causes the OLT to disable the ONU, OLT.
  • Disable_serial_number message with the 'Disable' option to turn off the laser of the ONU; when the ONU is enabled, The administrator informs the OLT of the ONU serial number and enables the OLT to enable the ONU. The OLT automatically sends a Disable_serial_number message with the 'Enable' option to turn on the laser of the ONU;
  • the access mode is Polling_mode
  • the administrator controls the state of the ONU by editing the control table; for the ONU When activated, the serial number of the ONU is added to the whitelist, and the OLT automatically activates the ONU through the above process; When deactivated, the serial number of the ONU is deleted from the whitelist.
  • the OLT automatically sends a Deactive_ONU-ID message to deactivate the ONU.
  • the ONU is disabled, the serial number of the ONU is added to the blacklist.
  • the Disable_serial_number message with the 'Disable' option is used to turn off the laser of the ONU.
  • the OLT automatically sends a Disable_serial_number message with the 'Enable' option to turn on the laser of the ONU. .
  • Max_discover 10, the max_discover is used to define the depth of the serial number discovery table.
  • the ONU registration method in the GPON system of the present invention provides a complete GPON system ONU registration policy.
  • the present invention provides two access modes, Quiet_mode and Polling_mode.
  • Quiet_mode the registration operation of the ONU is performed by the administrator. Manually, it is applicable to the case where the number of ONUs is small and the members are stable. In other cases, the Polling_mode is used.
  • the Polling_mode the OLT periodically registers the ONUs.
  • this access mode (Polling_mode) three registration modes, namely, no authentication mode (NA_mode), pure sequence number mode (SN_mode), and serial number + password mode (SP_mode) are provided, which respectively provide registration modes of different security levels. Managers can select different access modes and registration modes according to actual needs, which improves the flexibility of the ONU registration function of the GPON system.
  • Figure 2 shows the table update flow chart
  • the ONU registration method in the GPON system of the present invention provides two access modes: Quiet mode (Quiet_mode) and Polling mode (Polling_mode), and no authentication mode (NA_mode) under Polling_mode.
  • Three registration modes pure serial number mode (SN_mode) and serial number + password mode (SP_mode).
  • the registration function of the ONU in the GPON system of the present invention includes two sub-functions: a registration admission function and a registration removal function.
  • the registration admission function activates the ONU and establishes a communication channel with the OLT for it, and the registration removal function is interrupted. The communication channel between the ONU and the OLT.
  • the GPON system first determines the access mode of the system configuration:
  • the registration of the ONU is done manually by the administrator.
  • the administrator needs to know the new ONU serial number in advance, and then inform the PON chip (hereinafter referred to as OLT) in the OLT of the ONU serial number to be operated, and let the OLT perform corresponding operations on the ONU.
  • the underlying operation is implemented by the PON chip.
  • OLT PON chip
  • the administrator informs the OLT of the ONU serial number and causes the OLT to activate or deactivate the ONU.
  • the ONU serial number is also notified to the OLT. Let the OLT enable or disable the ONU.
  • the OLT When the access mode is Polling_mode, the OLT periodically registers the ONU. In one cycle, the ONU registration process includes the following two steps:
  • the OLT automatically discovers the new ONU and writes the newly discovered ONU into the serial number discovery table
  • the OLT uses the corresponding control table to filter the serial number discovery table according to the registration mode configured by the system. For the ONU that fails to be filtered, the OLT does not perform the registration operation; Requesting to activate the equalization delay required by the ONU.
  • the ONU is activated by the OLT, and a communication channel between the activated ONU and the OLT is established, and a round is completed.
  • ONU registration operation There are three registration modes under Polling_mode, namely NA_mode, SN_mode and SP_mode.
  • different registration modes are used to filter the serial number discovery table. See the follow-up instructions for details.
  • the administrator can control the state of the ONU by editing the control table.
  • the serial number of the ONU is added to the whitelist.
  • the serial number of the ONU is deleted from the whitelist.
  • the serial number of the ONU is added to the blacklist.
  • the serial number of the ONU is deleted from the blacklist.
  • the GPON protocol is based on the serial number of the ONU to identify and configure the ONU.
  • the serial number of the ONU is known in advance, the method of directly activating the ONU is usually employed.
  • the serial number of the ONU cannot be known in advance, so the OLT needs to automatically discover the serial number of the ONU.
  • the present invention defines two access modes as needed:
  • Quiet mode used for manual registration, the management personnel directly register the ONU, the method is simple and intuitive, it is a static operation of the ONU, suitable for the number of ONUs, and the members are stable, generally not correct
  • the end user is open; the manager needs to know the serial number of the ONU to be operated in advance, and then inform the OLT of the serial number, and let the OLT perform corresponding operations on the ONU, and the underlying operation is implemented by the PON chip;
  • Second_mode used for automatic registration, which can periodically acquire the serial number of the new ONU (which can be processed according to the GPON standard) and add them to the serial number discovery table, and then The OLT compares the sequence number in the serial number discovery table with the serial number recorded in the control table to determine the validity of the ONU and activate the legal ONU. At this point, the registration process has been completed and wait for a while before starting the next round of operations. The above operations are all done automatically by the OLT.
  • Cycle indicates the number of rounds in the system running registration process.
  • initial value When the initial value is defined as zero, it indicates an infinite loop. Defined as other positive integers and not equal to one time, run according to the actual count, first perform a registration process, determine whether the cycle value is one, not to reduce the cycle value for one time, then perform a registration process again, and determine whether the cycle value is For one, do not reduce the cycle value for one time, and then execute the next registration process, and then cycle until the cycle value is one.
  • the cycle value is one, it will not be decremented by one.
  • the registration process is performed first, so the number of executions is equal to the initial cycle value; interval represents the time interval between the start of the round and the start of the next round; max_discover defines the depth of the serial number discovery table. The specific settings of max_discover are detailed in the following instructions.
  • the program proposes three registration modes:
  • NA_mode No authentication mode
  • the ONU can be activated without the ONU.
  • the online ONU indicates all the ONUs currently attached to the ODN.
  • the visible ONU indicates that the ONU is enabled.
  • the ONU when the ONU is disabled, the ONU's laser is turned off, enabled when enabled, and enabled or disabled by the blacklist;
  • SP_mode Serial number + password mode
  • the administrator configures the access mode and registration mode of the ONU in the OLT. Define the parameters visi_mode and auth_mode, configure the access mode and registration mode to be essentially for visi_mode and auth_mode Assignment.
  • auth_mode 0
  • control tables used to implement the ONU registration function: blacklist, whitelist, and error password table.
  • blacklist blacklist
  • whitelist whitelist
  • error password table error password table
  • Blacklist The serial number used to store the illegal ONU. The ONU whose serial number is in this table will be disabled. When the ONU is de-enabled, the ONU's laser is turned off. When the ONU is enabled, the laser is turned on. The blacklist is used in all three registration modes, and the three registration modes share a blacklist to filter the ONU.
  • the ONU When a member is added to the blacklist, the ONU is directly enabled, even if the ONU is activated. If the member is deleted in the blacklist, the ONU is directly enabled.
  • Error password table It is automatically generated during the SP_mode password verification process. When the password verification of the ONU is incorrect, the serial number of the ONU is placed in the password password table, and the activation is unsuccessful. It is only used for SP_mode.
  • NA_mode uses only blacklists
  • SN_mode uses blacklists and whitelists
  • SP_mode uses whitelists, blacklists, and incorrect password tables.
  • the registration process of the present invention is as follows:
  • the OLT first acquires a new ONU serial number.
  • the access mode is Quiet_mode
  • the new ONU serial number is notified to the OLT by the administrator; when the access mode is Polling_mode,
  • the OLT automatically obtains the new ONU serial number, and the OLT broadcasts the serial number request message to all ONUs.
  • the ONU in the serial number state sends a serial number response message to the OLT, so that the OLT obtains the serial number of the new ONU.
  • the OLT measures the equalization delay, or ranging, for each newly discovered ONU.
  • the OLT transmits the measured equalization delay to the ONU. After the ONU obtains its own equalization delay, the uplink and downlink communication channels are established.
  • the registration of the ONU is done manually by the administrator.
  • the administrator needs to know the new ONU serial number in advance, and then inform the OLT of the ONU serial number to be operated, and let the OLT perform corresponding operations on the ONU.
  • the underlying operation is implemented by the PON chip.
  • the OLT When the access mode is Polling_mode, the OLT automatically discovers the new ONU and writes the newly discovered ONU into the serial number discovery table. Then the OLT filters the serial number discovery table according to the registration mode configured by the system, and uses the corresponding control table. Activate the filtered ONU. At this point, the registration process has been completed. Next, the value of the parameter cycle is judged. If the cycle is equal to zero, it means an infinite loop, and after waiting for a period of time, the next round of operations is started. If the cycle is not equal to zero, it is judged whether the cycle is greater than one. At this time, the cycle runs according to the actual count.
  • the cycle When the cycle is greater than one, it indicates that the number of rounds of the registration process has not been used up, the cycle value is reduced by one, and then wait for the next round of operation; If the cycle is not greater than one, it indicates that the number of rounds of the registration process has run out, and the GPON system automatically enters Quiet_mode.
  • the system When the system is configured as Quiet_mode, in this mode, all registration operations are done manually.
  • the administrator informs the OLT of the ONU serial number, and causes the OLT to activate the ONU.
  • the OLT automatically measures the ONU to complete the activation of the ONU.
  • the ONU When the ONU is deactivated, the administrator sets the ONU serial number.
  • the OLT is informed and the OLT is deactivated to the ONU.
  • the OLT automatically sends a Deactive_ONU-ID message to deactivate the ONU.
  • the administrator informs the OLT of the ONU serial number and causes the OLT to disable the ONU.
  • the OLT automatically sends a Disable_serial_number message with the "Disable” option to turn off the ONU's laser;
  • the administrator informs the OLT of the ONU serial number and enables the OLT to enable the ONU.
  • the OLT automatically sends a Disable_serial_number message with the "Enable” option to turn on the laser of the ONU.
  • disc_num indicates the number of members currently added to the serial number discovery table. Each member is inserted into the serial number discovery table, and disc_num is incremented by one. When disc_num reaches the serial number, it is found. At the table depth (max_discover), the OLT no longer receives the serial number response message. The OLT receives the serial number response message of the ONU. If the receiving timeout indicates that no ONU serial number response message is available, it is not necessary to continue adding members to the serial number discovery table. Add the aging time of all members in the serial number discovery table to one, and eliminate the ONU serial number that has reached the aging time. The update sequence number discovery table process ends.
  • the OLT receives the serial number response message of the ONU, extract the serial number in the message.
  • serial number already in the serial number discovery table clear the aging time in the serial number discovery table, and then Determine whether the serial number of the ONU is in the activation table. If the serial number of the ONU is not in the discovery table, it is directly determined whether it is already in the activation table. If the serial number is in the activation table, it indicates that the ONU has been activated and does not need to be activated again, and continues to receive the next serial number response message. Finally, the serial number that is not in the activation table can be written to the serial number discovery table and the disc_num is incremented by one.
  • the serial number discovery table After updating the serial number discovery table, use the corresponding control table to filter the ONUs in the serial number discovery table. Then, the ONU that passes the filtering is measured. After the ONU is successfully measured, the ONU serial number is added to the ONU activation table. Each time an ONU is activated, it is added to the ONU activation table and the active_num is incremented by one. Active_num indicates the number of members in the current activation table. Since the number of ONUs that can be activated by the OLT is limited, when the active_num reaches the activation table depth (max_onu), the activation process ends, even if there are still members in the serial number discovery table that are not processed.
  • This patent proposes three registration modes, each of which is described in detail separately.
  • NA_mode After updating the serial number discovery table, it enters the ONU activation process.
  • the implementation process is shown in Figure 3.
  • the initial value of configuration n is zero (n indicates the number of serial number discovery table members that have been accessed in this round. Each time a member is accessed, n is incremented by one. When n is greater than disc_num, the member in the serial number discovery table has been accessed. .), access the serial number to find the first member in the table, and add n to one. Determine whether n is greater than disc_num. If n is greater than disc_num, it indicates that the serial number discovery table has been accessed, and the activation process is ended.
  • n is not greater than disc_num, it is determined whether active_num (the current number of active table members) is less than the activation table depth (max_onu). If it is less than max_onu, the activation process is ended; if it is less than, the ONU is measured. After the ranging is successful, the serial number of the ONU is added to the activation table, and the active_num is incremented by one, and the serial number of the ONU is deleted from the serial number discovery table. Then start accessing the next member of the serial number discovery table.
  • SN_mode The implementation process is shown in Figure 4. Its implementation process is very similar to NA_mode.
  • the initial value of configuration n is zero, and n indicates the number of serial number discovery table members that have been accessed in this round. Each time a member is accessed, n is incremented by one. When n is greater than disc_num, the member in the serial number discovery table has been accessed. . Access the first member of the serial number discovery table and increment n by 1. Determine whether n is greater than disc_num. If n is greater than disc_num, it indicates that the serial number discovery table has been accessed, and the activation process is ended.
  • n is not greater than disc_num, it is determined whether active_num (the current number of active table members) is less than the activation table depth (max_onu). If it is less than max_onu, the activation process is ended; if it is less than, it is determined whether the ONU serial number is in the white list. If it is not in the white list, the serial number is deleted from the discovery table, and the next member in the serial number discovery table is selected. If it is in the white list, the ONU is measured. After the ranging is successful, the serial number of the ONU is added to the activation table, and the active_num is incremented by one, and the serial number of the ONU is deleted from the serial number discovery table. Then start accessing the next member of the serial number discovery table.
  • SP_mode This mode uses the serial number and password to authenticate the ONU. After the OLT measures the ONU, the OLT sends a password request message to the ONU to verify the validity of the ONU.
  • the OLT has a local table that records all the ONU passwords connected to it. The OLT compares the passwords in the received ONU password response messages with the records in the local table. If the matching is passed, the password is verified. The ONU is legal and sends Ranging_Time to the ONU. Message.
  • the password verification fails, the serial number of the ONU is added to the error password table, and the activation operation is allowed to be performed again after the ONU serial number is aged in the error password table.
  • the implementation process is shown in Figure 5.
  • the initial value of configuration n is zero, and n indicates the number of serial number discovery table members that have been accessed in this round. Each time a member is accessed, n is incremented by one. When n is greater than disc_num (number of serial number discovery table members), it indicates the serial number. The members in the discovery table have been accessed.
  • First update the error password table select the first member in the wrong password table, and add i to one, and then judge whether i is greater than badpas_num. If it is greater, it indicates that the error password table is updated and the ONU sequence in the discovery table is started. If the number is not greater than, the aging time of the member is increased by one, and then it is determined whether the member has reached the aging time. If it is reached, the ONU serial number is removed from the error password table, and then the error password table is accessed. One member. After the error password table update is completed, the ONU in the serial number discovery table is filtered.
  • n is greater than disc_num. If n is greater than disc_num, it indicates that the serial number discovery table has been accessed, and the activation process is ended. If n is not greater than disc_num, then active_num is determined. (Currently, the number of active table members) is less than the activation table depth (max_onu). If it is not less than max_onu, the activation process is ended; if it is less, the following operations are performed.
  • the ONU serial number is in the white list, if not in the white list, deleting the serial number from the discovery table, and selecting the next member in the serial number discovery table; if in the white list, then determining the next Whether the serial number is in the error password table, if it is in the error password table, the serial number is deleted from the discovery table, and the next member in the serial number discovery table is selected; otherwise, the serial number is filtered and the ONU is measured. distance. After ranging, password verification is performed, and a Ranging_Time message is sent to the ONU that passes the verification. After the ONU receives the ranging message, the activation succeeds.
  • serial number of the ONU is added to the activation table, and active_num is incremented by one and deleted from the serial number discovery table.
  • the failed ONU is added to the error password table and deleted from the serial number discovery table, and then the next ONU in the serial number discovery table is started.
  • managers can control the status of the ONU by editing the control table.
  • the serial number of the ONU is added to the whitelist.
  • the OLT automatically activates the ONU through the above process.
  • the ONU is deactivated, the serial number of the ONU is deleted from the whitelist, and the OLT automatically sends a Deactive_ONU-ID message pair.
  • the ONU is deactivated.
  • the ONU is disabled, the serial number of the ONU is added to the blacklist.
  • the OLT automatically sends the Disable_serial_number message with the "Disable” option to turn off the laser of the ONU.
  • the serial number of the ONU is black.
  • the OLT automatically sends a Disable_serial_number message with the "Enable” option to turn on the laser of the ONU.
  • the OLT When the OLT detects a single ONU broken link, the OLT automatically deletes the serial number of the ONU from the activation table and the serial number discovery table.
  • the OLT When the OLT detects all link breaks, the OLT automatically clears the entire serial number discovery table and activation table.

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  • Computer Networks & Wireless Communication (AREA)
  • Small-Scale Networks (AREA)
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Abstract

Cette invention porte sur un procédé d'enregistrement d'une unité de réseau optique (ONU) dans un système de réseau optique passif gigabit (GPON). Le procédé comprend les étapes suivantes : le système GPON détermine en premier lieu le mode d'accès de configuration de système, lorsque le mode d'accès est le mode calme, l'opération d'enregistrement de l'ONU est achevée manuellement par un gestionnaire; et lorsque le mode d'accès est le mode d'invitation à émettre, un OLT effectue une opération d'enregistrement d'ONU périodiquement, l'opération comprenant les étapes suivantes : 1. l'OLT découvre automatiquement une nouvelle ONU et écrit le numéro de série de l'ONU nouvellement découverte dans une table de découverte de numéro de série; et 2. l'OLT filtre la table de découverte de numéro de série, mesure les distances des ONU résiduelles, active les ONU et établit un canal de communication entre chaque ONU activée et l'OLT. Le procédé d'enregistrement de l'ONU dans le système GPON de l'invention offre deux modes d'accès et trois modes d'enregistrement; le mode calme est applicable à la situation dans laquelle le nombre d'ONU est faible et les ONU sont stables, le mode d'invitation à émettre est applicable aux autres situations; et les trois modes d'enregistrement sont applicables à différents niveaux de sécurité, ce qui augmente la flexibilité de la fonction d'enregistrement de l'ONU du système GPON.
PCT/CN2010/079053 2010-03-31 2010-11-24 Procédé d'enregistrement d'unité de réseau optique dans un système de réseau optique passif gigabit WO2011120308A1 (fr)

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CN201010136031.1 2010-03-31
CN201010136031.1A CN101783808B (zh) 2010-03-31 2010-03-31 一种gpon系统中onu的注册方法

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