WO2011120308A1

WO2011120308A1 - Registration method of optical network unit in gigabit passive optical network system

Info

Publication number: WO2011120308A1
Application number: PCT/CN2010/079053
Authority: WO
Inventors: 吴军平; 向东; 安俊峰; 李庆
Original assignee: 烽火通信科技股份有限公司
Priority date: 2010-03-31
Filing date: 2010-11-24
Publication date: 2011-10-06
Also published as: CN101783808B; CN101783808A; MY173842A

Abstract

A registration method of an Optical Network Unit(ONU) in a Gigabit Passive Optical Network(GPON) system is provided by this invention. The method comprises the following steps: the GPON system firstly judges the access mode of system configuration, when the access mode is quiet mode, the registration operation of the ONU is completed manually by a manager; and when the access mode is polling mode, an OLT performs registration operation to ONU periodically, wherein the operation comprises the following steps: 1. the OLT automatically discovers a new ONU and writes the serial number of the newly discovered ONU in a serial number discovery table; and 2. the OLT filters the serial number discovery table, measures the distances of the residual ONUs, activates the ONUs and establishes a communication channel between each activated ONU and OLT. The registration method of the ONU in the GPON system of the invention provides two access modes and three registration modes; the quiet mode is applicable to the condition that the number of ONUs is small and the ONUs are stable, the polling mode is applicable to the other conditions; and the three registration modes are applicable to different security levels, thus increasing the flexibility of the registration function of the ONU of the GPON system.

Description

Method for registering ONU in GPON system

技术领域Technical field

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.

背景技术Background technique

With the continuous development of the Internet, various operators are strengthening the construction of their broadband networks, and the number of users is also growing rapidly. For the operator, selecting a simple and convenient user registration method is a necessary process for implementing user management and billing management; the user also wants the authentication to be simple and fast, and the charging strategy is flexible and diverse.

GPON 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. At present, there is no unified registration technology in the GPON system, and 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.

发明内容 Summary of the invention

In view of the problems existing in the prior art, an object of the present invention is to provide a method for registering an ONU in a GPON system, which solves the existing method. When the ONU is registered in the GPON system, 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.

In order to achieve the above objectives, the technical solution adopted by the present invention is:

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;

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:

In the first step, 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.

On the basis of the above technical solution, after completing one round of registration operation, 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. When 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.

Based on the above technical solution, the registration mode described in the second step includes:

(1) No authentication mode NA_mode. In this 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.

(2) pure serial number mode SN_mode, in this mode, the OLT verifies the validity of the ONU according to the serial number of the ONU;

(3) 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. In the three registration modes in the Polling_mode, 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.

Based on the foregoing technical solutions, the OLT determines, according to the configuration of the parameters visi_mode and auth_mode, which access mode and registration mode are currently used. When visi_mode=0, the access mode is configured to be quiet mode; when visi_mode=1, it is configured as polling mode. When auth_mode=0, the configuration registration mode is NA_mode; when auth_mode=1, it is configured as SN_mode; when auth_mode=2, it is configured as SP_mode.

On the basis of the above technical solutions, when the OLT implements the ONU registration admission function and the registration removal function, there are three control tables used, namely:

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.

Whitelist, 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. When the ONU password verification error is not activated, the serial number of the ONU is placed in the error password table.

On the basis of the above technical solution, when the ONU is activated, its serial number is stored into one In the activation table, avoid the ONU being repeatedly activated.

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.

When the OLT detects all link breaks, the OLT automatically clears the entire serial number discovery table and activation table.

Based on the above technical solutions, the method for the administrator to operate the ONU is:

When the access mode is Quiet_mode, 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. 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. When the ONU is disabled, The administrator informs the OLT of the ONU serial number, and causes the OLT to disable the ONU, OLT. Automatically send the 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;

When 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. When 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. When the ONU is enabled, the serial number of the ONU is deleted from the blacklist. The OLT automatically sends a Disable_serial_number message with the 'Enable' option to turn on the laser of the ONU. .

Based on the above technical solutions, the following parameters are configured by default as

Visi_mode=1 ,

Auth_mode=1

Cycle=0

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. In the 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. In the Polling_mode, the OLT periodically registers the ONUs. In 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.

附图说明DRAWINGS

The invention has the following figures:

Figure 1 Overall flow chart of ONU registration,

Figure 2 shows the table update flow chart,

Figure 3 NA_mode & Polling_mode ONU activation flow chart,

Figure 4 SN_mode & Polling_mode ONU activation flow chart,

Figure 5 SP_mode & Polling_mode ONU activation flow chart.

具体实施方式 detailed description

The invention will be further described in detail below with reference to the accompanying drawings.

In order to meet the different needs of users, 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 registration process of the ONU in the GPON system of the present invention can be briefly described as follows:

The GPON system first determines the access mode of the system configuration:

When the access mode is Quiet_mode, 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. When the ONU is activated or deactivated, the administrator informs the OLT of the ONU serial number and causes the OLT to activate or deactivate the ONU. When the ONU is enabled or disabled, the ONU serial number is also notified to the OLT. Let the OLT enable or disable the ONU.

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:

In the first step, the OLT automatically discovers the new ONU and writes the newly discovered ONU into the serial number discovery table;

In the second step, 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. When the ranging is successful and the ONU receives the Ranging_Time message sent by the OLT, 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. In the second step, different registration modes are used to filter the serial number discovery table. See the follow-up instructions for details.

On the basis of the above technical solutions, after completing the first step and the second step, at this point, a round of registration operation has been completed. After completing one round of registration operation, after waiting for a period of time, start the next round. Operation, this waiting time is determined by the configured parameter interval. The number of rounds of the registration process is determined by the configured parameter cycle. When the number of rounds of the registration process runs out, the GPON system automatically enters Quiet_mode. The specific settings of each parameter and its meaning are detailed in the following instructions.

Based on the above technical solution, the administrator can control the state of the ONU by editing the control table. When the ONU is activated, the serial number of the ONU is added to the whitelist. When the ONU is deactivated, the serial number of the ONU is deleted from the whitelist. When the ONU is disabled, the serial number of the ONU is added to the blacklist. When the ONU is enabled, 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. In the case where the serial number of the ONU is known in advance, the method of directly activating the ONU is usually employed. In other cases, 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:

(1) Quiet mode (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;

(2) Polling mode (Polling_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.

There are three important parameters in the polling mode. Cycle indicates the number of rounds in the system running registration process. 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. When 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.

In the polling mode, the program proposes three registration modes:

(1) No authentication mode (NA_mode). In this 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;

(2) Pure serial number mode (SN_mode). In this mode, the OLT verifies the validity of the current online and visible ONU according to the serial number of the ONU.

(3) Serial number + password mode (SP_mode). In this mode, the OLT verifies the validity of the currently online and visible ONU according to the serial number and password (PAS) of the ONU.

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.

When visi_mode=0, the access mode is configured to be quiet mode; when visi_mode=1, it is configured as polling mode.

When auth_mode =0, the registration mode is configured as NA_mode; when auth_mode When =1, it is configured as SN_mode; when auth_mode = 2, it is configured as SP_mode.

There are three types of control tables used to implement the ONU registration function: blacklist, whitelist, and error password table. The three tables can also be combined into one using the prior art.

(1) 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.

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.

(2) Whitelist: The serial number used to store the legal ONU. It is used for SN_mode and SP_mode, and the ONU whose serial number is in this table will be allowed to be ranging.

(3) 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.

In the three registration modes in polling mode, NA_mode uses only blacklists; SN_mode uses blacklists and whitelists; SP_mode uses whitelists, blacklists, and incorrect password tables. These three registration modes share a blacklist.

The registration process of the present invention is as follows:

At the beginning of the registration process, the OLT first acquires a new ONU serial number. When 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. After receiving the serial number request, 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 then measures the equalization delay, or ranging, for each newly discovered ONU. Finally, 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 overall process of ONU registration is shown in Figure 1. Before the system starts running, you need to configure the system's access mode, registration mode, and important parameters. If not configured, you can use the default value. The default value can be configured as visi_mode=1, auth_mode =1, cycle=0, interval=5s, max_discover=10.

When the access mode is Quiet_mode, 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.

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. 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.

(1) Quiet_mode registration process

When the system is configured as Quiet_mode, in this mode, all registration operations are done manually. 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. 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. When the ONU is disabled, 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; When 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.

(2) Polling_mode registration process:

In Polling_mode, the ONU registration process is completed in two steps.

(1) Update the serial number discovery table:

As shown in Figure 2, the initial value of the configuration disc_num is zero. 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. If the OLT receives the serial number response message of the ONU, extract the serial number in the message. Check whether the number of members added to the serial number discovery table in this round is less than max_discover. If it is not smaller, you cannot 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 process of updating the serial number discovery table ends; if it is less, the subsequent operations are performed. Next, it is determined whether the serial number is in the blacklist. If it is in the blacklist, the ONU is disabled and receives the next serial number response message. If the serial number is not in the blacklist, check whether the serial number already exists in the serial number discovery table. For the 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. At this point, a new ONU serial number has been successfully written into the serial number discovery table, and continues to receive the next serial number response message, and begins the next loop process until the OLT does not receive the serial number response message or disc_num equals max_discover. .

(2) Activation process:

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. Count the number of members disc_num in the current serial number discovery table. 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. If 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. If 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. When 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. In the implementation process of SP_mode, first configure the initial value of i to be zero, i indicates the number of incorrect password table members that have been accessed in this round. Each time a member is accessed, i is incremented by one. When i is greater than badpas_num (the number of incorrect password table members) ), indicating that the member in the error password table has been accessed. 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.

Select the first member of the serial number discovery table, and add n to one to 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. 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. Determining whether 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. The 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.

Under Polling_mode, managers can control the status of the ONU by editing the control table. When the ONU is activated, the serial number of the ONU is added to the whitelist. The OLT automatically activates the ONU through the above process. When 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. When 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. When the ONU is enabled, the serial number of the ONU is black. When the list is deleted, the OLT automatically sends a Disable_serial_number message with the "Enable" option to turn on the laser of the ONU.

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 above description is only a preferred description of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention are included in the scope of the present invention. .

Claims

A method for registering an ONU in a GPON system, comprising the steps of:

In the second step, 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. When the ranging is successful and the ONU receives the Ranging_Time message sent by the OLT, 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.

2. The method for registering an ONU in a GPON system according to claim 1, wherein after completing a round of registration operation, the OLT waits for a period of time according to the value of the configured parameter interval, and then starts the next round of operations. The number of rounds in the ONU registration process is determined by the configured parameter cycle. When the value of the parameter cycle is zero, it indicates 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 operations. Then the value of the parameter cycle is decremented by one. When the value of the parameter cycle is equal to one, the number of rounds representing the running of the registration process has been used up, and the GPON system automatically enters the Quiet_mode.

3. The method for registering an ONU in a GPON system according to claim 1 or 2, wherein the registration mode in the second step comprises:

4, The method for registering an ONU in a GPON system according to claim 3, wherein the OLT determines the current access mode and the registration mode according to the configuration of the parameters visi_mode and auth_mode, and configures the access mode to be quiet mode when visi_mode=0; When visi_mode=1, it is configured as polling mode; when auth_mode=0, the configuration registration mode is NA_mode; when auth_mode=1, it is configured as SN_mode; when auth_mode=2, it is configured as SP_mode.

5 The method for registering an ONU in a GPON system according to claim 3, wherein when the OLT implements the ONU registration admission function and the registration removal function, the control table used is three types:

6. The method of registering an ONU in a GPON system according to claim 3, wherein when the ONU is activated, the serial number thereof is stored in a In the activation table, avoid the ONU being repeatedly activated.

The method for registering an ONU in a GPON system according to claim 3, wherein the method for the administrator to operate the ONU is:

When the access mode is Quiet_mode, 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; 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. When the ONU is disabled, the administrator informs the OLT of the ONU serial number. And the OLT performs the de-enable operation on the ONU. The OLT automatically sends the 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 makes the OLT pair The ONU performs an enabling operation, and the OLT automatically sends a Disable_serial_number message with an "Enable" option to turn on the laser of the ONU;

When the access mode is Polling_mode, the administrator controls the state of the ONU by editing the control table; when the ONU is activated, the serial number of the ONU is added to the whitelist, and the OLT automatically activates the ONU through the above process; when the ONU is 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. When the ONU is disabled, the serial number of the ONU is added to the blacklist. The OLT automatically sends a "Disable". The disable_serial_number message of the option is used to turn off the laser of the ONU; when the ONU is enabled, the serial number of the ONU is deleted from the blacklist, and the OLT automatically sends a Disable_serial_number message with the "Enable" option to turn on the laser of the ONU.

The method for registering an ONU in a GPON system according to claim 3, wherein the following parameters are configured by default:

Visi_mode=1,

Auth_mode=1,

Cycle=0,

Interval=5s,