CN106789143B

CN106789143B - Registration method and device in Ethernet Passive Optical Network (EPON)

Info

Publication number: CN106789143B
Application number: CN201610120782.1A
Authority: CN
Inventors: 游君平
Original assignee: Hangzhou H3C Technologies Co Ltd
Current assignee: New H3C Information Technologies Co Ltd
Priority date: 2016-03-03
Filing date: 2016-03-03
Publication date: 2021-03-26
Anticipated expiration: 2036-03-03
Also published as: CN106789143A

Abstract

The embodiment of the application discloses a registration method and a device in an Ethernet Passive Optical Network (EPON), which relate to the technical field of communication, wherein the method comprises the following steps: receiving a backoff silence message; determining the number of times of receiving the backoff silence message; setting delay silent time according to the receiving times; entering a silent state and timing the silent state according to a set delay silent time; exiting the silence state when the timing of the silence state reaches the delayed silence time; and receiving the discovery authorization message and performing registration. By applying the scheme provided by the embodiment of the application, the pressure of a communication system in the ONU registration process is reduced when the ONU is registered.

Description

Registration method and device in Ethernet Passive Optical Network (EPON)

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for registration in an ethernet passive optical network EPON.

Background

An EPON (Ethernet Passive Optical Network) system is a pon (Passive Optical Network) Passive Optical Network that carries Ethernet frames encapsulated into 802.3 standard Ethernet frames, and is based on the IEEE 802.3ah standard promulgated in 6 2004, with the organic combination of the Ethernet technology and the Passive Optical Network technology.

A typical EPON system mainly includes an OLT (Optical Line Terminal), an ONU (Optical Network Unit), and an ODN (Optical Distribution Network), and is shown in a schematic structural diagram in fig. 1. The ODN includes an Optical fiber and one or more Passive Optical devices such as a POS (Passive Optical Splitter), an Optical signal transmission channel is provided between the OLT and the ONUs, and the POS may couple uplink data to one Optical fiber and distribute the downlink data to each ONU.

In addition, the ONU needs to complete registration first to operate normally.

Specifically, when the ONUs register, the OLT broadcasts a Discovery Gate (Discovery authorization) message to all the ONUs, and opens Discovery windows of the ONUs. Each ONU transmits a registration request Register _ REQ message to the OLT. The OLT determines whether the received Register _ REQ message contains a Media Access Control (MAC) address of the ONU in the secure user list. The OLT determines an illegal ONU according to the MAC address not belonging to the secure user list and transmits a Nack Register () message to the illegal ONU. And after receiving the Nack Register message, the illegal ONU starts a timer and enters a silent state, wherein the duration of the timer represents the time delay Ts for starting the next registration process. Before the timer is not overtime, the illegal ONU is kept in a WAIT (waiting) state; when the timer is over, the illegal ONU transitions from the WAIT state to the Register state and WAITs for the OLT to send the Discovery Gate message. And when the next ONU discovery window is opened, the ONU transmits a Register _ REQ message for registration.

As can be seen from the above, in the existing EPON system, the devices repeatedly identified as the illegal ONUs by the OLT always perform muting for a fixed duration, occupy a time window, and affect registration of the legal ONUs.

Disclosure of Invention

The embodiment of the application discloses a method and a device for registering in an Ethernet Passive Optical Network (EPON) so as to reduce the pressure of a communication system in the registering process of an Optical Network Unit (ONU).

In order to achieve the above object, an embodiment of the present application discloses a registration method in an ethernet passive optical network EPON, where the method is applied to an optical network unit ONU, and the method includes:

receiving a backoff silence message;

determining the number of times of receiving the backoff silence message;

setting delay silent time according to the receiving times;

entering a silent state and timing the silent state according to a set delay silent time;

when the timing of the silent state reaches a set delay silent time, exiting the silent state;

and receiving the discovery authorization message and performing registration.

In a specific implementation manner of the present application, the method further includes:

receiving a silence abort message;

aborting the timing of the silence state and exiting the silence state.

In a specific implementation manner of the present application, after the step of determining the number of times of receiving the backoff silence message, the method further includes:

determining that the number of receptions has reached a maximum number;

and setting the delay quiet time according to the maximum delay quiet time.

In order to achieve the above object, an embodiment of the present application discloses a registration apparatus in an ethernet passive optical network EPON, which is applied to an optical network unit ONU in the ethernet passive optical network EPON system, and the registration apparatus includes:

a first receiving unit, configured to receive a backoff silence message;

a silence processing unit, configured to determine the number of times of receiving the backoff silence message; setting delay silent time according to the receiving times; controlling the ONU to enter a silent state and timing the silent state according to the delay silent time; when the timing of the silent state reaches the delay silent time, controlling to exit the silent state;

a second receiving unit, configured to receive a discovery authorization message;

and a registration processing unit for performing registration.

In a specific implementation manner of the present application, the first receiving unit is further configured to receive a silence abort message;

the silence processing unit is further configured to terminate the timing of the silence state according to the silence abort message and control the ONU to exit the silence state.

In a specific implementation manner of the present application, the mute processing unit is further configured to set the delay mute time according to a maximum mute delay time when the number of times of reception has reached a maximum value.

In order to achieve the above object, an embodiment of the present application discloses a registration method in an ethernet passive optical network EPON, which is applied to an optical line terminal OLT and is characterized in that

Receiving a registration request message;

determining that the address information of the registration request message belongs to an illegal Optical Network Unit (ONU), and generating an extended silence message containing the address information;

transmitting the extended silence message.

determining the address information update of a legal optical network unit;

generating broadcast silence abort messages

And sending the broadcasted silence abort message to inform the illegal network unit to immediately exit the silence state.

In order to achieve the above object, an embodiment of the present application discloses a registration apparatus in an ethernet passive optical network EPON, where the apparatus is applied to an optical line terminal OLT, and the apparatus includes:

a receiving unit that receives a registration request message;

the silence notification unit is used for determining that the address information of the registration request message belongs to an illegal Optical Network Unit (ONU), and generating an extended silence message containing the address information;

and the sending unit is used for sending the extended silence message to the illegal optical network unit ONU.

In a specific implementation manner of the present application, the apparatus further includes a sending unit;

the silence notification unit determines the address information update of a legal optical network unit and generates a broadcast silence suspension message;

a sending unit, configured to send the silence abort message.

As can be seen from the above, in the scheme provided in the embodiment of the present application, after receiving the back-off silence message, the ONU determines the delay silence time according to the number of times of receiving the back-off silence message, then enters the silence state and times the silence state according to the silence time, and when the time of the silence state reaches the delay silence time, exits the silence state, receives the discovery authorization message, and then performs registration. It can be seen that when the scheme provided by the embodiment of the present application is applied to perform ONU registration, once an ONU is in a mute state, the time length of the ONU in the mute state is determined by the number of times that the ONU receives a mute message, but not by a preset fixed value, and since the time that the ONU is in the mute state is increased along with the increase of the number of times of reception, once the ONU is continuously determined many times as an illegal ONU, the mute state is not frequently ended, and then a Register _ REQ message is not frequently sent to the OLT, thereby reducing the pressure of the communication system.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an EPON system according to an embodiment of the present application;

fig. 2 is a schematic signaling flow diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a registration method in an ethernet passive optical network EPON according to an embodiment of the present disclosure;

fig. 4 is a flowchart illustrating another registration method in an ethernet passive optical network EPON according to an embodiment of the present application;

fig. 5 is a flowchart illustrating another registration method in an ethernet passive optical network EPON according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a registration apparatus in an ethernet passive optical network EPON according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of another registration apparatus in an ethernet passive optical network EPON according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The concepts involved in the embodiments of the present application are described below.

1、EPON

The EPON system is a PON passive optical network that carries ethernet frames encapsulated into 802.3 standard ethernet frames, and is based on the IEEE 802.3ah standard promulgated in 2004 in 6 months, with an organic combination of ethernet technology and passive optical network technology.

For EPON, the current prevailing standard is the standard CTC3.0 established by chinese telecommunications, CTC3.0 introducing the concept of a "muting mechanism" in ONU registration.

2、OLT

The OLT is generally disposed in a Central Office (CO) and is a core device of the entire EPON system.

The OLT is typically an ethernet switch, router, or multimedia conversion platform that provides an interface between the EPON system and the service provider's core data/video/telephony network.

3、ONU

The ONU is used to connect network devices (such as a PC, a set-top box, and a switch) on a user side, and is usually placed in a home, a corridor, or a roadside of a user, and is mainly responsible for forwarding uplink data (packets sent by the ONU to the OLT) on the user side and selectively receiving downlink broadcast data (packets sent by the OLT to the ONU) forwarded from the OLT side.

4、ODN

The ODN is composed of an Optical fiber and one or more Passive Optical devices such as a POS (Passive Optical Splitter), and provides an Optical signal transmission channel between the OLT and the ONU.

The POS may couple upstream data to an optical fiber and distribute downstream data to the various ONUs.

The execution main body of the embodiment of the application can be any ONU in an EPON system. The message related in the embodiment of the present application may be an MPCP (Multipoint Control Protocol) message.

As will be understood by those skilled in the art, in the existing "muting mechanism", the ONU is determined as an illegal ONU by the OLT and then enters a muting state, and when a timer of the muting state expires, the ONU transitions from the muting state to a registering state (registering state) and waits for a Discovery Gate message sent by the OLT. When the OUN receives the Discovery Gate message of the OLT and the next Discovery window is opened, the ONU sends a REGISTER _ REQ message to start registration. However, in the existing muting mechanism, the time length of each muting state of the ONU is the same, and the illegal ONU repeatedly waits and restarts registration according to the muting state with a fixed time length, and competes with other legal ONUs for a registration window, thereby reducing the efficiency of successful registration of the legal ONUs. In the scheme provided by the embodiment of the application, the time length for repeatedly judging the ONU of the illegal ONU by the OLT to be in the silent state is properly increased, the registration times of the illegal ONU are correspondingly reduced, and the registration window and the registration success rate of the legal ONU are correspondingly increased.

First, a signaling flow diagram of a communication system provided in fig. 2 is combined to generally describe a registration method of an optical network unit ONU provided in this embodiment.

The communication system includes an OLT and at least one ONU that is communicatively coupled to the OLT.

Specifically, the OLT broadcasts a Discovery Gate message (S201), opens an ONU Discovery window, and after receiving the Discovery Gate, the ONU sends a Register _ REQ message (S202) to the OLT, and the OLT determines whether the ONU is a legitimate ONU, and sends a Nack Register message (S203) to the ONU if it is determined that the ONU is an illegitimate ONU, and after receiving the message, the ONU determines a delay quiet time according to the number of times the Nack Register message has been received, and enters the quiet state until the time in the quiet state reaches the delay quiet time.

In addition, during the ONU is in the mute state, a mute abort message from the OLT may be received (S204), and after receiving the message, the ONU aborts the timing of the mute state, exits the mute state, and performs registration.

The method and the apparatus for registering a network unit ONU provided in this embodiment are described in detail below with reference to specific embodiments.

Fig. 3 is a schematic flowchart of a registration method in an ethernet passive optical network EPON according to an embodiment of the present disclosure, where the method is applied to an optical network unit ONU, and includes:

s301: a backoff silence message is received.

The backoff silence message may be understood as a message for notifying the ONU to enter a silence state.

Specifically, after receiving the Discovery Gate message broadcast by the OLT, the ONU starts entering a registration process, sends a Register _ REQ message to the OLT, and after receiving the Register _ REQ message, the OLT sends a Nack Register message to the ONU if determining that the ONU is an illegal ONU, and the ONU enters a silent state upon receiving the Nack Register message.

Based on this, the aforementioned backoff silence message may be understood as the Nack Register message described above.

It is to be understood that the Nack Register message may be a Register message conforming to a multipoint control protocol MPCPDU, that is, the backoff silence message may be a Register message conforming to a multipoint control protocol MPCPDU.

Because the relevant standard has stipulated the corresponding meaning when the Register flag bit in the Register message of the MPCPDU takes each numerical value, when the value of the flag bit is 4, the OLT judges that the ONU is an illegal ONU, and if the ONU receives the Nack Register message with the value of the Register flag bit being 4, the ONU can consider that the back-off silence message is received. In addition, for the value of the REGISTER flag bit, 5 to 255 are reserved values, so in an optional implementation manner of the present application, it can also be indicated by 5 to 255 that the ONU is determined to be an illegal ONU, that is, if the value of the REGISTER flag bit in the MPCPDU is found to be greater than or equal to 4 by analyzing the Nack REGISTER message, it can also be considered that the back-off silence message is received.

S302: the number of receptions of the backoff silence message is determined.

The ONU may record the number of times of receiving the backoff silence message, and update the number of times after receiving the backoff silence message each time.

S303: and setting the delay silent time according to the receiving times.

It should be noted that the delay quiet time may be understood as: the time when the ONU is in the mute state after the delay processing is further understood as: the larger the number of times of reception, the longer the ONU is in the silent state. Of course, the time that the ONU is in the mute state cannot be extended without limitation with the increase of the number of times of reception, and may be specifically limited by setting the maximum delay time.

It can be understood by those skilled in the art that, in the prior art, each time an ONU enters a mute state, the duration of the ONU in the mute state is a fixed value, and the delay mute time given in this step is determined by the number of times of reception, specifically, the manner of determining the mute time may be predetermined, so that after the ONU receives a backoff mute message, the delay mute time can be determined according to the number of times of reception, without being notified by the OLT.

In addition, as can be understood by those skilled in the art, values of each identification bit in a corresponding protocol are already specified in a common specification, but in the process of making the specification, some bits are reserved in consideration of factors such as convenience for later-stage expansion, and the like, and when a receiving end analyzes message data after receiving the message data, the values of the reserved bits can be ignored, that is, according to the specification, the values of the reserved bits do not affect the analysis result of the message.

As can be seen from the foregoing description, the specification may reserve bits during the preparation process to facilitate the later expansion, and similarly, may reserve a value for a certain flag bit to facilitate the later expansion.

For example, the values of the REGISTER flag bit in the MPCPDU are reserved values in the values of 0 and 5 to 255.

In view of this, in a preferred implementation manner of the present application, the ONU may be notified to determine the delay quiet time according to the number of times of reception by setting the value of the Register flag bit in the Nack Register message as a reserved value.

Therefore, the value of the REGISTER mark bit is set as the reserved value, so that the ONU can know that the backoff silence message is received, and the ONU can know that the silence time is determined according to the receiving times.

Preferably, the value of the REGISTER flag bit is 5, and of course, may be one of the reserved values such as 6, 7, and 8, which is not limited in this application.

In a specific implementation manner of the present application, after determining a reception coefficient of the backoff silence message, the registration method may further include: and determining that the receiving times reach the maximum times, and setting the delay silent time according to the maximum delay silent time.

Specifically, when the delay quiet time is set according to the maximum quiet state delay time, the set quiet time may be equal to the maximum quiet state delay time.

In addition, when the silence state delay time is updated according to the number of times of reception, the silence state delay time may be updated according to the size of the number of times of reception and the principle that the greater the number of times of reception, the longer the silence state delay time is entered, and the delay silence time may be determined.

It should be noted that the silence state delay time may be understood as: the time that the ONU is in the mute state this time is an extended value relative to the time that the ONU is in the mute state last time, in this case, the delay time of the mute state is equal to the sum of the delay time of the mute state and the time that the ONU is in the mute state last time, for example, it is assumed that the time that the ONU is in the mute state last time is: 20s, every time the number of receptions increases by 1, the time in the silent state increases by 10s, and then the delay time in the silent state is: 10s, the delay quiet time is: 10s +20 s-30 s;

the silence state delay time may also be understood as: the time that the current ONU is in the mute state is an extended value relative to the reference mute state time, in this case, the delay mute time is equal to the sum of the mute state delay time and the admission mute time, for example, assuming that the reference mute state time is 10s, the relationship between the number of receptions and the extended value is: (number of receptions-1) x10s, where the number of receptions is 3, the silence state delay time is: (3-1) x10s ═ 20s, the delay quiet time is: 20s +10 s-30 s;

the silence state delay time may also be understood as: in this case, a relationship between the mute state delay time and the number of times of reception may be preset, for example, the mute state delay time is equal to a fixed value of the number of times of reception x, and then the mute state delay time is calculated according to the relationship, so that the delay mute time is obtained.

It is assumed that the above maximum value is 3 and the maximum silence state delay time is 180 s.

When the ONU is judged as an illegal ONU for the first time, the delay silence time is T60 s;

when the ONU is judged as an illegal ONU for the second time, the delay silence time is 2T-2 x 60 s-120 s;

when the ONU is judged as an illegal ONU for the third time, the delay silence time is 3T-3 multiplied by 60 s-180 s;

when the ONU is judged as an illegal ONU for the fourth time, the delay silence time is 180 s;

and when the ONU is judged as an illegal ONU for the fifth time, the delay silence time is 180 s.

In addition, based on the above thought, a piecewise function form can be adopted, and the time for the ONU to enter the mute state is determined according to the number of times of reception.

For example, when the ONU is determined to be an illegal ONU for the first time, the length of the silent state is T60 s;

when the ONU is judged as an illegal ONU for the second time, the delay silence time is T60 s;

when the ONU is judged as an illegal ONU for the third time, the delay silence time is 2T-2 x 60 s-120 s;

when the ONU is judged as an illegal ONU for the fourth time, the delay silence time is 2T-2 x 60 s-120 s;

when the ONU is judged as an illegal ONU for the fifth time, the delay silence time is 3T-3 multiplied by 60 s-180 s;

when the ONU is determined as an illegal ONU the sixth time, the delay quiet time is 3T — 3 × 60s — 180 s.

It should be noted that the present application is only described above as an example, and the way of determining the silent time in practical application is not limited to this.

S304: and entering a silent state and timing the silent state according to the set delay silent time.

It should be noted that the silent state mentioned in the embodiment of the present application may be understood as the WAIT state.

Specifically, the ONU may be in different states, for example, the WAIT state, the register state, and the like, where when the ONU is in the WAIT state, it may be understood that: the state that the ONU cannot register, and when the ONU is in the register state, it can be understood that: a state in which a discovery grant message transmitted by the OLT is waited for and the ONU can perform registration.

S305: and when the timing of the silent state reaches the delay silent time, exiting the silent state.

S306: and receiving the discovery authorization message and performing registration.

The Discovery authorization message is generally broadcast by the OLT, that is, the Discovery Gate message, and after the registration is started, the process of completing the registration is the same as that in the prior art, and is not described herein again.

As can be seen from the above, in the scheme provided in this embodiment, after receiving the back-off silence message, the ONU determines the delay silence time according to the number of times of receiving the back-off silence message, then enters the silence state and times the silence state according to the silence time, and when the time of the silence state reaches the delay silence time, exits the silence state, receives the discovery authorization message, and then performs registration. It can be seen that when the scheme provided by this embodiment is applied to perform ONU registration, once an ONU is in a mute state, the time length of the ONU in the mute state is determined by the number of times that the ONU receives a mute message, but not by a preset fixed value, and since the time that the ONU is in the mute state is increased along with the increase of the number of times of reception, once the ONU is continuously determined to be an illegal ONU many times, the mute state is not frequently ended, and then a Register _ REQ message is not frequently sent to the OLT, thereby reducing the pressure of the communication system.

For the OLT, after broadcasting the Discovery Gate message, the OLT may receive a Register _ REQ message fed back by a plurality of ONUs in the communication system, and before sending the Register message to each ONU, the OLT needs to determine whether each ONU is a valid ONU or an illegal ONU to determine whether to send an Ack Register message or a Nack Register message.

Wherein, the Ack Register message can be understood as: the registration request is successful, for example, the value of the REGISTER flag bit in the MPCPDU (MPCP message frame) is 3, which indicates that the registration request is successful.

The Nack Register message can be understood as: the registration request is rejected, for example, the registration REGISTER flag bit in the MPCPDU (MPCP message frame) has a value of 4, indicating that the registration request is rejected.

In an optional implementation manner of the present application, when the OLT determines whether the ONU is a valid ONU, the OLT may determine whether the MAC address of the ONU is in an authorization list stored in the OLT, specifically, when the MAC address of the ONU is determined to be in the authorization list, the ONU may be considered as a valid ONU, and otherwise, the ONU may be considered as an illegal ONU.

In another optional implementation manner of the present application, when the OLT determines whether the ONU is a valid ONU, the OLT may consider information such as a user name and a password of the ONU in addition to the MAC address of the ONU, specifically, if it is determined that the user name and the password of the ONU belong to a preset authorization list, the ONU may be considered as a valid ONU, and otherwise, the ONU may be considered as an illegal ONU.

It is understood that whether an ONU is an illegal ONU or not may change with the change of the actual application, for example, a user manually sets the ONU in the authorization list as an illegal ONU, and the like. That is, in an alternative implementation manner of the present application, the OLT may update the legal user list stored therein according to actual situations.

In view of the foregoing, in a specific implementation manner of the present application, referring to fig. 4, a flowchart of another registration method in an ethernet passive optical network EPON is provided, and in this embodiment, compared with the foregoing embodiment, before the timing of the silence state reaches the delayed silence time, the method further includes:

s307: a silence abort message is received.

Specifically, if the ONU is rejected by the OLT during registration, the ONU enters a silent state, and the ONU rejects the discovery authorization message sent by the OLT in the silent state, that is, the ONU cannot register again when the ONU is in the silent state, so that negative effects on the EPON system caused by the ONU continuously trying to register can be reduced. However, considering engineering convenience, the ONU is still given a certain chance of attempting registration. In the prior art, after the time length that the ONU is in the mute state reaches a certain time length, the ONU can release the mute state of the ONU itself, so that the ONU can respond to the discovery authorization message broadcast by the OLT again.

In order to reduce the waiting time of the ONU and improve the registration efficiency, in this embodiment, the registration can be started as long as the silence suspension message is received.

The silence suspension message carries a silence state release identifier, and after the identifier is obtained through analysis by the ONU, the silence state of the ONU can be released, and registration is started.

In a preferred implementation manner of the present application, the silence abort message may be a Discovery Gate message carrying a silence state release flag,

as can be known from the foregoing description, bits may be reserved in the specification during the preparation process to facilitate later expansion, and in view of this situation, when the silence state release flag is set, these reserved bits specified in the standard may be considered, and the silence state release flag is represented by the reserved bits, but in this case, unlike the prior art, when a receiving end parses message data after receiving the message data, the receiving end does not completely ignore the value of the reserved bits, but needs to parse the silence state release flag from the reserved bits according to an agreement.

In a preferred implementation manner of the present application, the silence state release flag may be a bit whose bit flag is a preset value in a discovery message field of a multipoint control protocol MPCP discovery grant message, where the bit whose bit flag is the preset value is a reserved bit.

Specifically, the discovery message field of the MPCP discovery grant message contains information as shown in table 1.

TABLE 1

The "bit" column in table 1 above can be understood as the position of each identification field in the discovery message field of the MPCP discovery grant message, that is, can be understood as the bit identification of each identification field. As can be seen from the table, the 2 nd to 3 rd bits and the 6 th to 15 th bits are reserved bits or reserved bits, and the silence state release flag can be located in any one of the reserved bits.

Preferably, the preset value may be 2, and of course, may also be 3, 6, 7, 8, and so on.

S308: the timing of the silence state is aborted and the silence state is exited.

After the ONU exits the mute state, registration can be started upon receiving a discovery authorization message sent by the OLT.

As can be seen from the above, in the scheme provided in this embodiment, the ONU receives the silence suspension message, and then exits the silence state and starts registration. Therefore, compared with the prior art, the scheme provided by the embodiment does not need to wait for the time length of the ONU in the silent state to reach a certain time length even if the ONU is in the silent state, so that the ONU registration efficiency can be improved.

Fig. 5 is a schematic flowchart of another registration method in an ethernet passive optical network EPON according to an embodiment of the present disclosure, where the method is applied to an optical line terminal OLT and includes:

s501: a registration request message is received.

S502: and determining that the address information of the registration request message belongs to an illegal Optical Network Unit (ONU), and generating an extended silence message containing the address information.

Specifically, the OLT may store a valid user list, and in practical application, it may be determined whether the address information of the registration request message belongs to the illegal ONU by checking whether the address information belongs to the valid user list.

Specifically, the address information may be information such as a MAC address of the ONU.

In a preferred implementation manner of the present application, the extended silence message may be a specially set Nack Register message, and specifically, the value of the Register flag bit is a reserved value.

Therefore, the value of the REGISTER flag bit is set as the reserved value, so that the ONU can know that the back-off silence message is received, and the ONU can also know that the ONU enters the silence state in a time-extending mode.

It should be noted that the extended mute message is used to notify the ONU to enter the mute state in a manner of extending the time of the mute state.

S503: an extended silence message is sent.

In a specific implementation manner of the present application, the method may further include:

determining the address information update of a legal optical network unit;

generating a broadcasted silence abort message;

and sending the broadcasted silence stopping message to inform an illegal network unit ONU to immediately exit the silence state.

As can be seen from the above, in the scheme provided in this embodiment, after receiving the registration request message, the OLT determines that the limb information of the registration request message belongs to an illegal ONU, generates an extended silence message containing the address information, and sends the extended silence message to the ONU. Therefore, the ONU can be in the silent state for a long time after receiving the extended silent state, so that once the ONU is continuously judged as an illegal ONU for many times, the silent state cannot be frequently ended, and further, the Register _ REQ message cannot be frequently sent to the OLT, thereby reducing the pressure of a communication system.

Corresponding to the registration method in the EPON, the embodiment of the present application further provides a registration apparatus in the EPON.

Fig. 6 is a schematic structural diagram of a registration apparatus in an ethernet passive optical network EPON according to an embodiment of the present disclosure, where the apparatus is applied to an optical network unit ONU in an ethernet passive optical network EPON system, and the apparatus includes:

a first receiving unit 601, configured to receive a backoff silence message;

a silence processing unit 602, configured to determine a number of times of receiving the backoff silence message; setting delay silent time according to the receiving times; controlling the ONU to enter a silent state and timing the silent state according to the delay silent time; when the timing of the silent state reaches the delay silent time, controlling to exit the silent state;

a second receiving unit 603, configured to receive a discovery authorization message;

a registration processing unit 604 for performing registration.

In a specific implementation manner of the present application, the first receiving unit 601 is further configured to receive a silence abort message;

the silence processing unit 602 is further configured to terminate the timing of the silence state according to the silence abort message and control the ONU to exit the silence state.

Specifically, the mute processing unit 602 is further configured to set the delay mute time according to a maximum mute delay time when the number of times of reception has reached a maximum value.

Fig. 7 discloses another registration apparatus in an ethernet passive optical network EPON according to an embodiment of the present application, where the apparatus is applied to an optical line terminal OLT, and the apparatus includes:

a receiving unit 701 that receives a registration request message;

a silence notification unit 702, configured to generate an extended silence message including the address information if it is determined that the address information of the registration request message belongs to an illegal optical network unit ONU;

a sending unit 703, configured to send the extended silence message to the ONU.

Specifically, the apparatus may further include a transmitting unit;

a sending unit, configured to send the silence abort message.

As can be seen from the above, in the scheme provided in this embodiment, after receiving the registration request message, the OLT determines that the limb information of the registration request message belongs to an illegal ONU, generates an extended silence message containing the address information, and sends the extended silence message to the ONU. Therefore, the ONU can be in the silent state for a longer time after receiving the extended silent state, so that once the ONU is in the silent state, the time length of the ONU in the silent state is determined by the number of times that the ONU receives the silent message, but not a preset fixed value, and the time that the ONU is in the silent state is increased along with the increase of the receiving number, so that once the ONU is continuously judged as an illegal ONU for multiple times, the silent state cannot be frequently ended, further the Register _ REQ message cannot be frequently sent to the OLT, and the pressure of a communication system is reduced.

For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Those skilled in the art will appreciate that all or part of the steps in the above method embodiments may be implemented by a program to instruct relevant hardware to perform the steps, and the program may be stored in a computer-readable storage medium, which is referred to herein as a storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A registration method in an Ethernet Passive Optical Network (EPON), which is applied to an Optical Network Unit (ONU), comprises the following steps:

receiving a backoff silence message;

determining the number of times of receiving the backoff silence message;

setting delay silent time according to the receiving times;

and receiving the discovery authorization message and performing registration.

2. The method of claim 1, further comprising:

receiving a silence abort message;

aborting the timing of the silence state and exiting the silence state.

3. The method of claim 1, wherein after the step of determining the number of times the backoff silence message is received, the method further comprises:

determining that the number of receptions has reached a maximum number;

and setting the delay quiet time according to the maximum delay quiet time.

4. A registration device in an Ethernet Passive Optical Network (EPON) is applied to an Optical Network Unit (ONU) in an EPON system, and is characterized by comprising:

a first receiving unit, configured to receive a backoff silence message;

and a registration processing unit for performing registration.

5. The apparatus of claim 4,

the first receiving unit is further configured to receive a silence abort message;

6. The apparatus of claim 4, wherein the mute processing unit is further configured to set the delayed mute time according to a maximum mute delay time when the number of receptions has reached a maximum value.

7. A registration method in Ethernet Passive Optical Network (EPON) is applied to an Optical Line Terminal (OLT), and is characterized in that

Receiving a registration request message;

determining that the address information of the registration request message belongs to an illegal Optical Network Unit (ONU), and generating an extended silence message containing the address information, wherein the extended silence message is used for informing the ONU to enter a silence state in a manner of extending silence state time, and the extended silence state time is set according to the receiving times of the backoff silence message;

transmitting the extended silence message.

8. The method of claim 7, further comprising:

determining the address information update of a legal optical network unit;

generating a broadcasted silence abort message;

and sending the broadcasted silence abort message to inform the illegal optical network unit to immediately exit the silence state.

9. A registration apparatus in an Ethernet Passive Optical Network (EPON), the apparatus being applied to an Optical Line Terminal (OLT), wherein the apparatus comprises:

a receiving unit that receives a registration request message;

a silence notification unit, configured to generate an extended silence message containing address information if it is determined that the address information of the registration request message belongs to an illegal optical network unit ONU, where the extended silence message is used to notify the ONU to enter a silence state in a manner of extending a silence state time, and the extended silence state time is a time set according to the number of times of receiving a backoff silence message;

10. The apparatus of claim 9, wherein the apparatus further comprises a transmitting unit;

a sending unit, configured to send the silence abort message.