WO2011020376A1 - Processing method in a passive optical network, system and network element for a passive optical network - Google Patents
Processing method in a passive optical network, system and network element for a passive optical network Download PDFInfo
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- WO2011020376A1 WO2011020376A1 PCT/CN2010/074413 CN2010074413W WO2011020376A1 WO 2011020376 A1 WO2011020376 A1 WO 2011020376A1 CN 2010074413 W CN2010074413 W CN 2010074413W WO 2011020376 A1 WO2011020376 A1 WO 2011020376A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/0816—Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
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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
- H04Q2011/0079—Operation or maintenance aspects
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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
- H04Q2011/0084—Quality of service aspects
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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
- H04Q2011/0088—Signalling aspects
Definitions
- the present invention relates to the field of communications, and in particular to a passive optical network (PON) for processing in a Passive Optical Network (PON) Method and passive optical network system and network element.
- PON passive optical network
- PON Passive Optical Network
- BACKGROUND Gigabit-Capable Passive Optical Network (GPON) technology is an important technology branch in passive optical networks. Similar to other PON technologies, GPON is also a point-to-multipoint extension. Passive optical access technology of the Park structure.
- the GPON is composed of an Optical Line Terminal (OLT) on the central office, an Optical Network Unit (ONU) on the user side, and an Optical Distribution Network (ODN).
- OLT Optical Line Terminal
- ONU Optical Network Unit
- ODN Optical Distribution Network
- the ODN consists of passive optical components such as single-mode fiber, optical splitter, and optical connector, providing an optical transmission medium for the physical connection between the OLT and the ONU.
- the related layer defines a Physical Layer Operations (Administration and Maintenance, PLOAM) channel, and the GPON uses the PLOAM channel to transmit PLOAM messages to implement management of the transmission aggregation layer.
- PLOAM Physical Layer Operations
- the GPON uses the PLOAM channel to transmit PLOAM messages to implement management of the transmission aggregation layer.
- ONU activation ONU management control channel establishment, encryption configuration, key management, etc.
- GPON stipulates that an OLT can only send one PLOAM message to one ONU in one downlink frame.
- One ONU can only send at most one PLOAM message in one uplink burst slot.
- this method of transmitting PLOAM messages is relatively inefficient.
- the ONU registers and switches to a redundant path, a large number of PLOAMs need to be transmitted. This low efficiency performance is particularly obvious.
- the related art allows the OLT to send multiple PLOAM messages in one downlink frame, but does not determine the number of PLOAM messages sent by the OLT to the same ONU in one downlink frame, and does not determine that an ONU is in an uplink.
- the number of PLOAM messages that can be sent in the time slot is a guard time (Guard time) between the uplink bandwidth allocated by the OLT to the two ONUs, and a physical layer overhead (PLOu) part of the uplink frame of the ONU.
- Guard time a guard time between the uplink bandwidth allocated by the OLT to the two ONUs
- PLOu physical layer overhead
- the GPON system should choose the appropriate length of Guard time, Preamble and Delimiter to improve the cost performance of the entire system. Longer Guard time. Preamble and Delimiter will waste the upstream bandwidth of the ONU. However, the shorter Guard time and Preamble require higher OLT and ONU optical transmitting devices and optical receiving devices, which will increase the cost of OLT and ONU.
- a longer Delimiter is good for the positive bound of the OLT.
- the length of the Preamble supported by the OLT of different manufacturers and the length of the Guard time and Delimiter supported by the ONU may be different.
- the GPON system should select a suitable maximum uplink bandwidth allocation number to improve the cost performance of the entire system. If the maximum uplink bandwidth allocation is too large, the number of PLOus in the uplink transmission may increase, resulting in waste of uplink bandwidth, and Will increase the hardware resources required by the ONU. If the maximum number of uplink bandwidth allocations is too small, the allocation structure in each downlink frame is small, which is not conducive to satisfying the low delay requirement of the uplink transmission service.
- the ONU registration activation in the related art mainly includes the following steps:
- the ONU listens to the downlink GTC (GPON Transmission Convergence) frame sent by the OLT and acquires frame synchronization;
- GTC GPON Transmission Convergence
- the ONU listens to the Upstream_Overhead (or Extended Burst Length) message sent by the OLT periodically and obtains the parameter configuration in the message;
- the unregistered ONU listens to the SN_Request (serial number request;) sent by the OLT, and receives the SN Request and then responds to the OLT with the Serial Number ONU (ONU serial number) message (the message carries the serial number of the ONU);
- the OLT After receiving the Serial_Number_ONU message sent by an ONU and obtaining the corresponding sequence number, the OLT assigns an ONU-ID to the ONU by sending an Assign_ONU-ID (Assigning ONU Identity) message;
- the OLT sends a Ranging_Request (Ranging Request;) to the ONU, and starts ranging the ONU;
- the ONU After receiving the Ranging Request, the ONU still responds to the OLT with a Serial Number ONU message;
- the OLT After receiving the Serial_Number_ONU message sent by the ONU, the OLT calculates the ranging result EqD (Equalization Delay) and passes the measured result EqD through the Ranging Time. (Measure time) The message is sent to the ONU to complete the ONU registration activation process.
- EqD Equalization Delay
- the OLT and the ONU cannot acquire each other's working mode or working capability, which will cause the communication efficiency of the OLT and the ONU to drop.
- SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the OLT and the ONU cannot acquire each other's working mode or working capability, and the communication efficiency of the OLT and the ONU is reduced.
- the main object of the present invention is to provide a passive optical network.
- a method of processing in a passive optical network includes: the optical network terminal OLT sends the working capability supported by the optical network to the ONU of the optical network unit, and the ONU configures its working parameters according to the working capability supported by the received OLT; The ONU sends its own supported working capabilities to the OLT. The OLT configures its own working parameters according to the working capabilities supported by the received ONUs.
- the method before the OLT sends the working capability supported by the OLT to the ONU, the method further includes: the ONU requests the OLT to send the working capability supported by the OLT; and before the ONU sends the working capability supported by the ONU to the OLT, the method further includes: Request the ONU to send the working capabilities supported by the ONU.
- the ONU can request the working capability supported by the OLT in one of the following ways: Create a new message, request the working capability supported by the OLT; increase the byte of the existing message; use the existing message or part of the byte in the uplink frame Reserved domain;
- the OLT requests the working capacity supported by the ONU in one of the following ways: Create a new message, request the working capacity supported by the ONU; increase the bytes of the existing message; use the existing message or some bytes in the downstream frame Reserved domain.
- the OLT sends the working capability supported by the OLT to the ONU, including sending in one of the following ways: creating a new message, the message is used to send the working capability supported by the OLT; adding the byte of the existing message; using the existing message or the downlink The reserved field of the partial byte in the frame, the ONU sends the working capability supported by the ONU to the OLT, including sending in one of the following ways: Creating a new message, the message is used to send the working capability supported by the ONU; adding the bytes of the existing message; Use existing messages or reserved fields of partial bytes in the upstream frame.
- the foregoing working capability may include one of the following: processing the physical layer operation management maintenance message capability; burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number.
- the foregoing working parameters may include one of the following: a number of physical layer operation management and maintenance messages sent; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number.
- the foregoing existing message may include: a physical layer operation management maintenance message.
- the passive optical network system includes: an optical network terminal OLT and an optical network unit ONU, wherein the OLT and the ONU mutually transmit the working capabilities supported by the OLT and the ONU, and the OLT and the ONU configure their own working parameters according to the received working capability supported by the other party.
- the foregoing working capability includes at least one of the following: processing the physical layer operation management maintenance message capability; burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number.
- the foregoing working parameters include at least one of the following: a number of physical layer operation management and maintenance messages sent; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number.
- a passive optical network element includes: a sending module, configured to send a working capability supported by the network; a receiving module, configured to receive working capability supported by other network elements; and a configuration module, configured to work according to the received other network element support Ability to configure its own parameters.
- the sending module uses one of the following methods to send the working capability supported by itself: Create a new message, the message is used to send the working capability supported by the network element; increase the bytes of the existing message; use the existing message, the uplink frame, and the downlink The reserved field of a partial byte in the frame.
- the sending module is specifically configured to send one of the following: the capability of processing the physical layer operation management and maintenance message; the burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number.
- the foregoing working parameters include at least one of the following: a number of physical layer operation management and maintenance messages sent; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number.
- the OLT is used to send the working capability supported by the OLT to the ONU, and the ONU is based on The working capacity supported by the OLT is configured to configure its own working parameters.
- the ONU sends its own supported working capability to the OLT.
- the OLT configures its working parameters according to the working capabilities supported by the received ONU, and solves the related technologies.
- the OLT and the ONU cannot obtain each other's working mode or working capability, which causes the communication efficiency of the OLT and the ONU to be reduced, thereby achieving the effect of improving the communication efficiency between the OLT and the ONU.
- FIG. 1 is a schematic diagram of a method of processing in a passive optical network according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a passive optical network system according to an embodiment of the present invention
- the embodiment of the present invention provides a method for processing in a passive optical network, and the method includes: OLT, in view of the related art, in which the OLT and the ONU cannot obtain each other's working mode or working capability, and the communication efficiency of the OLT and the ONU is reduced.
- the working capacity of the ONU is sent to the ONU, and the ONU configures its working parameters according to the received working capabilities of the OLT.
- the ONU sends its own supported working capabilities to the OLT.
- the OLT supports the working capabilities supported by the received ONUs. To configure your own working parameters. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
- a method of processing in a passive optical network is provided.
- the method includes the following steps: step S102 to step 4: S102: Step S102, the OLT sends the working capability supported by the OLT to the ONU, and the ONU is configured according to the working capability supported by the received OLT.
- Step S104 The ONU sends the working capability supported by the ONU to the OLT, and the OLT configures its working parameters according to the working capability supported by the received ONU.
- the order of the above two steps can be changed.
- the implementation process of the embodiment of the present invention will be described in detail below with reference to examples.
- the working mode and/or working ability of the OLT to the ONU to support itself can be delivered in the following manner:
- the OLT passes the reserved field (bit 6-0) of the Flags in the bandwidth allocation structure (Allocation Structure) of the downlink frame PCBd i;
- the OLT transmits the IDENT i or the reserved bit bit31 of the downlink frame; 3.
- the OLT transmits the PLEND i of the downlink frame or the second 12 bit (the original 12 bit used for transmitting the length of the ATM);
- the OLT adds a byte by adding a byte transfer of the existing PLOAM message, for example, a PLOAM message containing an uplink overhead (Upstream_Overhead), that is, an Upstream_overhead parameter message, and the added byte is the 13th word. Section, as shown in Table 1, the OLT uses the byte to pass;
- the OLT passes the newly created PLOAM message, and the newly created PLOAM message is as shown in Table 2.
- Table 2 Ability OLT message format
- the working mode and/or working ability of the ONU to support the OLT to send itself can be delivered in the following way:
- the ONU is passed through bit 3-2 of the 12th byte in the PLOAM message (the message name Serial Number ONU ) containing the Serial Number information;
- the ONU can also be transmitted through the IND i or bit 4-0 of the upstream frame;
- the ONU increases the byte transfer of the existing PLOAM message. For example, in the PLOAM message containing the serial number information (Serial Number), the Serial Number ONU message is increased by one byte, and the added byte is the 13th. Byte, as shown in Table 3, the ONU uses this byte to pass
- the ONU is delivered through the newly created PLOAM message, and the newly created PLOAM message is as shown in Table 4.
- Embodiment 1 OLT and ONU can use the combination of the above various methods + the working mode and working ability of the business.
- the OLT and the ONU actively send the registration activation method of the working mode and/or working ability supported by the other party.
- the OLT and the ONU negotiate their respective capabilities for processing PLOAM messages, including:
- the ONU registration activation process mainly includes the following steps:
- the ONU listens to the downlink GTC (GPON Transmission Convergence) frame sent by the OLT and acquires frame synchronization;
- GTC GPON Transmission Convergence
- the ONU listens and acquires the parameter configuration periodically sent by the OLT;
- the OLT transmits the following information to the ONU through the reserved field of Flags in the bandwidth allocation structure (Allocation Structure) of the downlink frame PCBd domain: The maximum number of PLOAM messages that the OLT can process in an upstream burst slot.
- the value of bitl-0 of Flags is 00, it indicates that the ONU can send a maximum of one PLOAM message in one uplink burst slot; when the value of bitl-0 of Flags is 01, it indicates that the ONU is in an uplink burst.
- the ONU After the unregistered ONU detects the SN_Request sent by the OLT, the ONU stores the capability parameter of the OLT to process the PLOAM message, and then the ONU responds to the OLT with the Serial_Number_ONU message, the message carries the serial number of the ONU, and the ONU passes the Serial Number ONU message.
- the bit 3-2 of the 12th byte is passed to the OLT with the following information: The maximum number of PLOAM messages that the current ONU can process in one downstream frame.
- the value of the bit 3-2 of the 12th byte of the Serial Number ONU is 00, it indicates that the OLT can send a PLOAM message to the ONU in a downlink frame; when the lowest byte of the Serial_Number_ONU is in the value of bit 3-2 When it is 01, it indicates that the OLT can send two PLOAM messages to the ONU in one downlink frame.
- the value of bit 3-2 of the lowest byte of Serial_Number_ONU is 10
- Three PLOAM messages can be sent; when the value of bit 3-2 of the last byte of Serial_Number_ONU is 11, it indicates that the OLT can send up to four PLOAM messages to the ONU in one downlink frame.
- the OLT After the OLT receives the Serial_Number_ONU message sent by an ONU and obtains the corresponding sequence number, the OLT stores the PLOAM message processing capability parameter of the ONU, and assigns the ONU to the ONU by sending an Assign_ONU-ID (Assignment of ONU Identity) message.
- ONU-ID enters the ranging process;
- the OLT sends a Ranging_Request (Ranging Request) to the ONU, and starts ranging the ONU;
- the ONU After receiving the Ranging Request, the ONU still responds to the OLT with a Serial Number ONU message;
- the OLT After receiving the Serial_Number_ONU message sent by the ONU, the OLT calculates the ranging result EqD (Equalization Delay) and sends the ranging result EqD to the ONU through the Ranging_Time (Ranging Time) message to complete the ONU registration activation process. .
- the OLT and the ONU negotiate the PLOAM message processing capabilities supported by each other during the registration activation phase of the ONU, and the flow of activation of the ONU registration is not changed.
- the OLT After the negotiation process between the OLT and the ONU is completed, when the OLT sends a PLOAM message to each ONU in the downlink frame, the OLT sends a PLOAM message according to the foregoing negotiation result; when the OLT allows the ONU to send a PLOAM message in the uplink burst slot, the ONU follows the above.
- the result of the negotiation sends a PLOAM message.
- This embodiment illustrates that the four states of the two bits indicate that the OLT and the ONU can process the above four PLOAM messages at most, and can also change the definition of four states of two bits. For example, 00 indicates that two PLOAM messages can be processed.
- 01 indicates that 4 PLOAM messages can be processed, 10 indicates that 6 PLOAM messages can be processed, and 11 indicates that 8 PLOAM messages can be processed. It is also possible to increase the number of bits to indicate more states indicating the PLOAM message processing capabilities of the OLT and ONU.
- This embodiment provides that the OLT transmits its own PLOAM message processing capability through the reserved field of Flags in the bandwidth allocation structure (Allocation Structure) of the downlink frame PCBd domain.
- the OLT can also transmit its own PLOAM message processing capability through the reserved bit bit 31 of the IDENT field of the downlink frame. For example, when the value of bit 31 of the IDENT field is 0, it indicates that the ONU can send a maximum of one PLOAM in one uplink burst slot.
- Message When the value of bit 31 of IDENT is 1, it means that the ONU can send two PLOAM messages in one uplink burst slot (it can also change the definition of two states of one bit; for example, when IDENT domain
- the value of bit31 When the value of bit31 is 0, it indicates that the ONU can send no more than five PLOAM messages in one uplink burst slot.
- the value of bit 31 of IDENT When the value of bit 31 of IDENT is 1, it indicates that the ONU is the largest in one uplink burst slot. Can send five PLOAM messages ;).
- the OLT can also transmit its own PLOAM message processing capability through the PLEND i of the downlink frame or the second 12bit i or the bit 9-8 of the downlink frame.
- the value of the bit 9-8 of the PLEND When the value of the bit 9-8 of the PLEND is 00, it indicates that the ONU is in an uplink burst. A maximum of one PLOAM message can be sent in a time slot; when the value of bit 9-8 of PLEND is 01, it indicates that the ONU can send two PLOAM messages in one uplink burst slot; when the value of bit 9-8 of PLEND is 10:00, indicating that the ONU can send up to three PLOAM messages in one uplink burst slot; when the value of bit 9-8 of PLEND is 11, it indicates that the ONU can send up to four in one uplink burst slot. PLOAM message (you can also change the definition of the four states of two bits).
- the OLT can also pass its own supported PLOAM message processing capability through part of the bytes of the Extended Burst Length message.
- This embodiment shows that the ONU passes its own PLOAM message processing capability through the 12th byte of the Serial_Number_ONU information.
- the ONU can also pass its own PLOAM message processing capability through the bit 4-0 of the IND field of the upstream frame, if the ONU utilizes the bitO of the IND field of the upstream frame.
- a maximum of five PLOAM messages can be sent; when the value of the bit O bit of the IND is 1, it indicates that the OLT can send up to five PLOAM messages to the ONU in one downlink frame. If the ONU here uses the bit 2-0 of the IND field of the uplink frame to transmit its own PLOAM message processing capability, it can indicate the PLOAM message processing capability of more levels of ONUs, and can better represent the ONU's own PLOAM message processing capability.
- the OLT can also use the downlink frame or other reserved fields of the PLOAM message to actively send the ONU to support the PLOAM message processing capability.
- the ONU can also use the uplink frame or other reserved fields of the PLOAM message to actively send the PLOAM message processing capability supported by the OLT.
- the OLT can also add an i or transmit its own PLOAM message processing capability to the downstream frame.
- the ONU can also add a domain to transmit its own PLOAM message processing capability in the upstream frame.
- the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- Embodiment 2 If the ITU standard organization plans to increase the number of PLOAM message bytes of the PON system, the OLT and the ONU can transmit the PLOAM message processing capability supported by the PLOAM message during the registration activation process of the ONU, and the ONU registration is activated.
- the process mainly includes the following steps: (1) The ONU listens to the downlink GTC (GPON Transmission Convergence, OLT) sent by the OLT.
- GTC GPON Transmission Convergence, OLT
- the OLT periodically sends an Upstream Overhead message, and the OLT increases the power by one byte in front of the last byte of the above message.
- the format of the Upstream_overhead message after changing ⁇ is as shown in Table 5.
- the added byte is The 13th byte, which is used to transmit the maximum number of PLOAM messages allowed to be sent by the ONU in an uplink burst slot.
- ONU received the above After the Upstream overhead message, configure its own working parameters according to the contents of each byte of the above message. Table 5, Upstream—Overhead Message Format
- the unregistered ONU listens to the SN_Request (serial number request;) sent by the OLT, and after receiving the SN_Request, it responds to the OLT with the Serial_Number_ONU (ONU serial number) message (the message carries the serial number of the ONU), and the ONU is in the above A byte is added in front of the last byte of the message.
- the format of the changed Serial_Number_ONU message is as shown in Table 6.
- the added byte is the 13th byte, which is used to transmit the OLT in a downlink frame. Allowed for the above
- the ONU sends the maximum number of PLOAM messages. Table 6 Serial Number ONU message format
- the OLT After receiving the Serial_Number_ONU message sent by an ONU and obtaining the corresponding serial number, the OLT configures its own working parameters according to the content of the above message.
- the OLT assigns an ONU-ID to the ONU by sending an Assign_ONU-ID (allocation ONU identifier) message to the ONU, and enters a ranging process;
- the OLT sends a Ranging_Request (Ranging Request) to the ONU, and starts ranging the ONU; (6) After receiving the Ranging Request, the ONU still responds to the OLT with the Serial Number ONU message;
- the OLT After receiving the Serial_Number_ONU message sent by the ONU, the OLT calculates the ranging result EqD (Equalization Delay) and sends the ranging result EqD to the ONU through the Ranging_Time (Ranging Time) message to complete the ONU registration activation process. .
- the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- Embodiment 3 Embodiment 3
- the OLT and ONU can also pass their own PLOAM message processing capabilities by adding a new PLOAM message during the ONU registration activation process.
- the ONU registration activation mainly includes the following steps:
- the ONU listens to the downlink GTC (GPON Transmission Convergence) frame sent by the OLT and acquires frame synchronization;
- GTC GPON Transmission Convergence
- the PLOAM message sent by the OLT is called Upstream_Overhead.
- the ONU listens and obtains the parameter configuration in the Upstream Overhead message.
- the OLT When the OLT sends the SN_Request to the ONU, the OLT sends a PLOAM message named PLOAM_Ability_OLT as shown in Table 7 in the downlink frame.
- the message is used by the OLT to transmit its own PLOAM message processing capability.
- the content of the first byte of the message is received.
- the ONU-ID of the PLOAM message the value of the ONU-ID is 11111111, indicating that the PLOAM message is a broadcast message sent to all ONUs; the second byte indicates that the type of the PLOAM message is PLOAM Ability OLT, that is, the PLOAM message of the OLT Processing capacity; the third byte indicates the maximum number of PLOAM messages allowed to be sent by the ONU in an uplink burst slot; the meaning of the fourth to tenth bytes is undefined, which is reserved; the thirteenth word The check field of the section.
- the unregistered ONU listens to the SN_Request (serial number request;) sent by the OLT, and stores the content of the PLOAM_Ability_OLT message in the frame after receiving the SN_Request, and responds to the OLT with the Serial Number ONU (ONU serial number) message (which is carried in the message) There is a serial number of the ONU); Table 7 PLOAM Ability OLT message format
- the OLT After receiving the Serial_Number_ONU message sent by an ONU and obtaining the corresponding sequence number, the OLT sends an ONU-ID to the ONU by sending an Assign_ONU-ID message to the ONU to enter the measurement process.
- the OLT sends a ranging request to the ONU.
- the ONU sends a PLOAM message named PLOAM_Ability_ONU to the OLT as shown in Table 8.
- PLOAM_Ability_ONU This message is used by the ONU to transmit its own PLOAM message processing capability, and the PLOAM_Ability_ONU message is first.
- the content of the byte is the ONU-ID of the PLOAM message; the second byte indicates that the type of the PLOAM message is PLOAM_Ability_ONU, that is, the PLOAM message processing capability of the ONU; the third byte indicates that the OLT allows in a downlink frame.
- the maximum number of PLOAM messages sent to this ONU; the meaning of the fourth to tenth bytes is undefined, which is reserved; the thirteenth byte check field.
- the OLT After receiving the PLOAM_Ability_ONU message sent by the ONU, the OLT stores the PLOAM message processing capability of the ONU carried in the PLOAM Ability ONU message, calculates the ranging result EqD (Equalization Delay), and passes the ranging result EqD through the Ranging Time. Time) The message is sent to the ONU, completing the ONU registration activation process.
- the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as Guard time. Preamble and Delimiter; OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- the OLT actively sends its own supported working mode and/or working ability.
- the ONU sends its own supported working mode and/or working ability at the request of the OLT.
- the OLT can use the first embodiment, the second embodiment, and the third embodiment to send the working mode and/or working capability supported by the OLT.
- the OLT sends a sequence number request to the ONU, the OLT requests the ONU's PLOAM message processing capability through the reserved field of the Flags in the Allocation Structure of the downlink frame PCBd domain.
- the value of the bit 5 of the Flags is 0, it indicates that the ONU does not need to report the PLOAM message processing capability supported by the ONU.
- the value of the bit 5 of the Flags is 1, it indicates that the PLOAM message processing capability supported by the ONU is required.
- the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- the OLT may use the first embodiment, the second embodiment, and the third embodiment to send the working mode and/or working capability supported by the OLT.
- the OLT When the OLT sends a ranging request to the ONU, the OLT requests the ONU's PLOAM message processing capability through the reserved field of the Flags in the Allocation Structure of the downlink frame PCBd domain.
- the value of bit 5 of Flags When the value of bit 5 of Flags is 0, it indicates that the ONU does not need to report the PLOAM message processing capability supported by it; when the value of bit 5 of Flags is 1, it indicates that the ONU supports the PLOAM message processing capability supported by it.
- the ONU needs to report its own supported PLOAM message processing capability, the ONU can respond to the OLT's ranging request and PLOAM message processing capability request in the following manner.
- the ONU When the ONU sends its own serial number information, the ONU passes its PLOAM message processing capability through the 12th byte of the Serial_Number_ONU message. (2) While the ONU sends its own serial number information, the ONU can also transmit its own PLOAM message processing capability through bit 4-0 of the IND field of the upstream frame.
- the ONU responds to the OLT with a Serial_Number_ONU message in the format shown in Table 6.
- the ONU responds to the OLT with a PLOAM message named PLOAM Ability ONU as shown in Table 8.
- the ONU can also actively send the PLOAM message processing capability supported by the OLT to the OLT by using the uplink frame or other reserved fields of the PLOAM message.
- the ONU needs to report the PLOAM message processing capability supported by the ONU, the ONU responds to the ranging request of the OLT and the PLOAM message capability of the ONU in the above manner, and the remaining steps are similar to the first embodiment, the second embodiment and the third embodiment. I won't go into details here.
- the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter.
- OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- Embodiment 6 the OLT and the ONU request each other's PLOAM message processing capability, and then the OLT and the ONU answer the other party's request.
- the OLT requests the ONU's PLOAM message processing capability in the manners of the fourth embodiment and the fifth embodiment, and the ONU responds to the OLT request in the manner of the fourth embodiment and the fifth embodiment (where the ONU response does not use the ADD of the uplink frame). i or bit4).
- the process of the ONU requesting the PLOAM message processing capability of the OLT is described below.
- the OLT sends the SN_Request to the ONU in the registration activation state, and the ONU in the registration activation state sends its own sequence number information to the OLT
- the ONU requests the PLOAM message processing capability of the OLT through the IND i or the bit 4 of the uplink frame.
- the OLT When the value of IND i or bit 4 is 0, it indicates that the OLT does not need to send its supported PLOAM message processing capability; when the value of bit 4 of the IND field is 1, it indicates that the OLT needs to send its supported PLOAM message processing capability.
- the OLT receives the sequence number information of the ONU and the value of bit 4 of the IND field of the uplink frame is 1, when the OLT sends a ranging request to the ONU, the OLT adopts the allocation structure of the downlink frame PCBd domain proposed by Embodiment 1 (Allocation). In the Structure, the reserved field bit 1-0 of Flags sends its own PLOAM message processing capability to the ONU; the OLT can also pass the IDENT i or reserved bits of the downstream frame.
- the bit 31 transmits its own PLOAM message processing capability; the OLT can also transmit its own PLOAM message processing capability through the bit 9-8 of the PLEND field of the downlink frame; the OLT can also respond to the ONU request by adding a new PLOAM message as shown in Table 7; It is also possible to use the downlink frame or other reserved fields of the PLOAM message to send the ONU its own supported PLOAM message processing capability. If the ITU standard organization plans to increase the number of PLOAM message bytes of the PON system, the OLT can transmit its own supported PLOAM message processing capability through the added bytes in the PLOAM message, and the OLT receives the IND of the upstream frame while the ONU is transmitting the sequence number information.
- the OLT can also add an i or pass its own PLOAM message processing capability to the downstream frame.
- the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- Burst Mode Overhead the burst mode overhead
- OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations.
- the physical layer overhead (PLOu) part of the uplink frame of the ONU includes the preamble (Preamble) and the delimiter domain (Delimiter). Wait.
- PLOu physical layer overhead
- Preamble preamble
- Delimiter delimiter domain
- the OLT sends Upstream Overhead to all ONUs.
- the PLOAM message is Upstream overhead parameters.
- the above message contains information such as the number of preamble bits and the number of delimiter bits.
- the parameter is related to the configuration.
- the ONU in the registration activation state sends its own serial number information to the OLT, the ONU passes the bit 3-2 of the twelfth byte in the PLOAM message (the message name is Serial Number ONU) containing the Serial Number information.
- a new byte is passed to the OLT with the following information: The minimum number of Guard time bytes that the current ONU can support.
- the bit 3 of the twelfth byte of the Serial Number information is the highest bit of the new byte, and the bit 2 of the twelfth byte of the Serial Number information is used as the second highest bit of the new byte, and the ONU uses the ten The number of bytes of the minimum Guard time supported by the bit pass.
- the OLT selects an appropriate Guard time value and sends it to all ONUs through the Upstream_overhead parameters message.
- the ONU receives the Upstream overhead parameters message, it performs the configuration according to these network parameters.
- OLT and ONU spear] use the above Upstream overhead parameters and the above Serial
- the Number message completes the negotiation of the Guard time, Preamble, and Delimiter bytes.
- the OLT transmits the number of Preamble and Delimiter bytes supported by the OLT to the ONU through the Upstream overhead parameters message.
- the OLT may also add an i in the downlink frame or pass the Preamble word and Delimiter number supported by the OLT.
- the OLT may also The partial bytes are used to pass the number of Preamble and Delimiter bytes supported by the PLOAM message.
- the OLT can also add a new PLOAM message to support the number of Preamble and Delimiter bytes supported by itself.
- This implementation shows the minimum Guard time byte that the ONU can support through the lowest byte of the Serial_Number_ONU message and the new Byte time.
- the ONU can also add a domain in the upstream frame to support itself.
- an OLT and an ONU actively send messages to each other to complete the Guard time. Preamble and Delimiter bytes.
- the OLT and the ONU can also request the Guard time. Preamble and Delimiter words supported by the other party.
- the OLT and the ONU negotiate the number of Guard time.
- Preamble and Delimiter bytes supported by each other, and the content of the Preamble and Delimiter can also be used by the method of the present example.
- Embodiment 8 The method for the OLT to negotiate with the ONU to select an appropriate maximum uplink bandwidth allocation is as follows:
- the OLT negotiates with the ONU the maximum number of uplink bandwidths supported by the ONU, that is, the maximum number of allocation structures allocated by the OLT in one downlink frame, and then the OLT stores the negotiation result and performs the OLT at the OLT.
- the negotiation result is performed, that is, the number of allocation structures allocated by the OLT in one downlink frame cannot exceed the maximum uplink bandwidth allocation supported by the ONU.
- the OLT When the OLT sends a serial number query message to the ONU in the registered activation state, and the ONU in the registered activation state sends its own serial number information to the OLT, the ONU transmits the maximum number of bytes to the OLT itself by adding two bytes after the serial number information.
- the OLT receives and stores the above information.
- the OLT sends the uplink bandwidth allocation next time, the number of allocation structures allocated by the OLT in one downlink frame cannot exceed the value of the above information stored by all OLTs.
- the ONU allocates the maximum uplink bandwidth allocated by the OLT to the OLT by adding two bytes after the sequence number information, and the ONU can also add a domain to support the maximum uplink bandwidth allocation supported by the domain.
- the ONU can also increase the maximum number of uplink bandwidth allocations supported by the byte delivery in a PLOAM message; the ONU can also increase the maximum number of uplink bandwidth allocations supported by a new PLOAM message.
- an ONU actively sends a message to the OLT to complete the negotiation of the maximum uplink bandwidth allocation by the ONU, and the ONU supports the maximum uplink bandwidth allocation by using the OLT request and then the ONU reply.
- the OLT and the ONU negotiate that the ONU can support the ONU during the registration activation phase.
- the maximum number of uplink bandwidth allocations can also be used to negotiate the maximum number of upstream bandwidth allocations that the ONU can support at other stages of the ONU.
- the OLT and the ONU negotiate the maximum number of uplink bandwidths that the ONU can support, and the other parameters in the bandwidth allocation supported by the ONU can also be negotiated by the method in this embodiment.
- a passive optical network system and a network element are provided. 2 is a schematic diagram of a passive optical network system in accordance with an embodiment of the present invention. As shown in FIG. 2, the passive optical network system includes: an OLT and an ONU, where
- the OLT and the ONU send each other's working capabilities, that is, the OLT sends its own supported working capabilities to the ONU, and the ONU sends its own supported working capabilities to the OLT.
- the OLT and the ONU configure their own working parameters according to the received working capabilities supported by the other party. That is, the OLT configures its working parameters according to the working capabilities supported by the received ONUs.
- the ONUs are configured according to the working capabilities supported by the received OLT. Its own working parameters.
- the working capabilities of the above system may include at least one of the following: the ability to process PLOAM messages; the burst mode overhead of the upstream frame; and the maximum number of upstream bandwidth allocations.
- the foregoing working parameters may include at least one of the following: a number of sent PLOAM messages; a burst mode overhead of an uplink frame; a maximum uplink bandwidth allocation number.
- 3 is a schematic diagram of a passive optical network element according to an embodiment of the present invention.
- the passive optical network network element includes: a sending module 201, a receiving module 203, and a configuration module 205.
- the sending module 201 is configured to send the working capability supported by the network;
- the receiving module 203 is configured to work by other network elements;
- the configuration module 205 is configured to configure its own parameters according to the received working capabilities supported by other network elements.
- the foregoing sending module 201 can use one of the following methods to send the working capability supported by the user: create a PLOAM message, which is used to send the working capability supported by the network element; increase the bytes of the existing message; Reserved field of partial bytes in the upstream and downstream frames.
- the foregoing sending module 201 is specifically configured to send one of the following: a capability of processing a PLOAM message; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number.
- the above working parameters include at least one of the following: the number of transmitted PLOAM messages; the burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number.
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Abstract
A processing method in a passive optical network, a system and network element for a passive optical network are provided by the present invention, the method includes the following steps: the OLT sends the working capability supported by itself to the ONU, and the ONU configures the working parameters of itself according to the received working capability supported by the OLT (S102); the ONU sends the working capability supported by itself to the OLT, and the OLT configures the working parameters of itself according to the received working capability supported by the ONU (S104). The communication efficiency between the OLT and the ONU is improved by the present invention.
Description
无源光网格中处理的方法及无源光网格系统和网元 技术领域 本发明涉及通信领域, 具体而言, 涉及一种无源光网络 ( Passive Optical Network, 简称为 PON ) 中处理的方法及无源光网络系统和网元。 背景技术 吉比特无源光网络 ( Gigabit-Capable Passive Optical Network, 简称为 GPON )技术是无源光网络中一个重要的技术分支, 和其它 PON技术类似, GPON也是一种釆用点到多点拓朴结构的无源光接入技术。 TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a passive optical network (PON) for processing in a Passive Optical Network (PON) Method and passive optical network system and network element. BACKGROUND Gigabit-Capable Passive Optical Network (GPON) technology is an important technology branch in passive optical networks. Similar to other PON technologies, GPON is also a point-to-multipoint extension. Passive optical access technology of the Park structure.
GPON由局侧的光线路终端 (Optical Line Terminal, 简称为 OLT )、 用 户侧的光网络单元 (Optical Network Unit, 简称为 ONU ) 以及光分配网络 ( Optical Distribution Network , 简称为 ODN )组成, 通常釆用点到多点的网 络结构。 ODN由单模光纤、 光分路器、 光连接器等无源光器件组成, 为 OLT 和 ONU之间的物理连接提供光传输媒质。 为了实现 OLT对 ONU的部分管理功能, 相关技术中定义了物理层操作 管理维护 ( Physical layer Operations, Administration and Maintenance , 简称 PLOAM ) 通道, GPON利用 PLOAM通道传输 PLOAM消息, 实现对传输 汇聚层的管理, 包括 ONU激活, ONU管理控制通道的建立, 加密配置, 密 钥管理等。 The GPON is composed of an Optical Line Terminal (OLT) on the central office, an Optical Network Unit (ONU) on the user side, and an Optical Distribution Network (ODN). Use a point-to-multipoint network structure. The ODN consists of passive optical components such as single-mode fiber, optical splitter, and optical connector, providing an optical transmission medium for the physical connection between the OLT and the ONU. In order to realize the partial management function of the OLT to the ONU, the related layer defines a Physical Layer Operations (Administration and Maintenance, PLOAM) channel, and the GPON uses the PLOAM channel to transmit PLOAM messages to implement management of the transmission aggregation layer. Including ONU activation, ONU management control channel establishment, encryption configuration, key management, etc.
GPON规定 OLT在一个下行帧只能给一个 ONU发送一个 PLOAM消息, 一个 ONU在一个上行突发时隙中至多只能发送一条 PLOAM消息。 当 PON 系统中连接多个 ONU时,这种发送 PLOAM消息方法的效率比较氐,当 ONU 注册和切换到冗余路径时, 大量的 PLOAM需要发送, 此时这种低效率表现 的尤为明显。 针对这种情况, 相关技术中允许 OLT在一个下行帧中发送多个 PLOAM消息, 但未确定 OLT在一个下行帧中给同一个 ONU发送 PLOAM 消息的个数, 也未确定一个 ONU在一个上行突发时隙中可以发送 PLOAM 消息的个数。 另外, GPON系统中, OLT给两个 ONU分别分配的上行带宽之间存在 一个保护时间 (Guard time ), ONU的上行帧的物理层开销 ( PLOu ) 部分包
含前导域 (Preamble ) 和定界域 (Delimiter ) 等。 GPON 系统应该选择合适 长度的 Guard time、 Preamble和 Delimiter , 以提升整个系统的性价比。 较长 Guard time. Preamble和 Delimiter会造成 ONU上行带宽的浪费, 但是, 较 短的 Guard time、 Preamble对 OLT、 ONU的光发射器件、 光接收器件要求较 高,会增加 OLT、 ONU的成本, 而较长的 Delimiter有益于 OLT的正确定界。 基于对上述因素的考虑, 不同厂家的 OLT支持的 Preamble的长度以及 ONU 支持的 Guard time、 Delimiter的长度可以是不同的。 最后, GPON系统应该选择一个合适的最大上行带宽分配个数以提升整 个系统的性价比, 最大上行带宽分配个数过大, 则上行传输中的 PLOu个数 可能会增多, 造成上行带宽的浪费, 并且会增加 ONU所需要的硬件资源。 最大上行带宽分配个数过小导致每个下行帧中的分配结构较少, 不利于满足 上行传输业务的低时延要求。 相关技术中的 ONU注册激活主要包括以下步骤: GPON stipulates that an OLT can only send one PLOAM message to one ONU in one downlink frame. One ONU can only send at most one PLOAM message in one uplink burst slot. When multiple ONUs are connected in a PON system, this method of transmitting PLOAM messages is relatively inefficient. When the ONU registers and switches to a redundant path, a large number of PLOAMs need to be transmitted. This low efficiency performance is particularly obvious. For this situation, the related art allows the OLT to send multiple PLOAM messages in one downlink frame, but does not determine the number of PLOAM messages sent by the OLT to the same ONU in one downlink frame, and does not determine that an ONU is in an uplink. The number of PLOAM messages that can be sent in the time slot. In addition, in the GPON system, there is a guard time (Guard time) between the uplink bandwidth allocated by the OLT to the two ONUs, and a physical layer overhead (PLOu) part of the uplink frame of the ONU. Contains Preamble and Delimiter. The GPON system should choose the appropriate length of Guard time, Preamble and Delimiter to improve the cost performance of the entire system. Longer Guard time. Preamble and Delimiter will waste the upstream bandwidth of the ONU. However, the shorter Guard time and Preamble require higher OLT and ONU optical transmitting devices and optical receiving devices, which will increase the cost of OLT and ONU. A longer Delimiter is good for the positive bound of the OLT. Based on the above factors, the length of the Preamble supported by the OLT of different manufacturers and the length of the Guard time and Delimiter supported by the ONU may be different. Finally, the GPON system should select a suitable maximum uplink bandwidth allocation number to improve the cost performance of the entire system. If the maximum uplink bandwidth allocation is too large, the number of PLOus in the uplink transmission may increase, resulting in waste of uplink bandwidth, and Will increase the hardware resources required by the ONU. If the maximum number of uplink bandwidth allocations is too small, the allocation structure in each downlink frame is small, which is not conducive to satisfying the low delay requirement of the uplink transmission service. The ONU registration activation in the related art mainly includes the following steps:
1、 ONU侦听 OLT发送的下行 GTC ( GPON Transmission Convergence, GPON传输汇聚) 帧并获取帧同步; 1. The ONU listens to the downlink GTC (GPON Transmission Convergence) frame sent by the OLT and acquires frame synchronization;
2 、 ONU 侦听 OLT 周期性发送的 Upstream_Overhead ( 或者 Extended Burst Length ) 消息并获取消息中的参数配置; 2, the ONU listens to the Upstream_Overhead (or Extended Burst Length) message sent by the OLT periodically and obtains the parameter configuration in the message;
3、 未注册激活的 ONU侦听 OLT发送的 SN_Request (序列号请求;), 收 到 SN Request后向 OLT应答 Serial Number ONU ( ONU序列号)消息(该 消息中携带有 ONU的序列号); 3. The unregistered ONU listens to the SN_Request (serial number request;) sent by the OLT, and receives the SN Request and then responds to the OLT with the Serial Number ONU (ONU serial number) message (the message carries the serial number of the ONU);
4、 OLT收到某个 ONU发送的 Serial_Number_ONU消息并获得相应的 序列号后向该 ONU通过发送 Assign_ONU-ID (分配 ONU标识) 消息向该 ONU分配 ONU-ID; 4. After receiving the Serial_Number_ONU message sent by an ONU and obtaining the corresponding sequence number, the OLT assigns an ONU-ID to the ONU by sending an Assign_ONU-ID (Assigning ONU Identity) message;
5、 OLT向该 ONU发送 Ranging_Request (测距请求;), 开始对该 ONU 进行测距; 5. The OLT sends a Ranging_Request (Ranging Request;) to the ONU, and starts ranging the ONU;
6 、 该 ONU 收到 Ranging Request 后 , 仍 然 向 OLT 响应 Serial Number ONU消息; 6. After receiving the Ranging Request, the ONU still responds to the OLT with a Serial Number ONU message;
7、 OLT收到该 ONU发送的 Serial_Number_ONU消息后, 计算测距结 果 EqD( Equalization Delay,均衡延迟)并将测 巨结果 EqD通过 Ranging Time
(测 巨时间) 消息发送给该 ONU, 完成 ONU注册激活过程。 但是, 上述 ONU的注册激活过程中, OLT和 ONU不能互相获取对方的 工作方式或工作能力, 这将导致 OLT和 ONU通信效率的降氐。 发明内容 针对相关技术中 OLT和 ONU不能互相获取对方的工作方式或工作能力 而导致 OLT和 ONU通信效率降低的问题而提出本发明, 为此, 本发明的主 要目的在于提供一种无源光网络中处理的方法, 以解决上述问题。 为了实现上述目的, 才艮据本发明的一个方面, 提供了一种无源光网络中 处理的方法。 才艮据本发明的无源光网络中处理的方法包括:光网络终端 OLT将自身支 持的工作能力发送给光网络单元 ONU, ONU根据接收到的 OLT支持的工作 能力来配置自身的工作参数; ONU将自身支持的工作能力发送给 OLT, OLT 根据接收到的 ONU支持的工作能力来配置自身的工作参数。 优选地, 在 OLT将自身支持的工作能力发送给 ONU之前, 该方法还包 括: ONU请求 OLT发送 OLT支持的工作能力; 在 ONU将自身支持的工作 能力发送给 OLT之前, 该方法还包括: OLT请求 ONU发送 ONU支持的工 作能力。 优选地, ONU可以通过以下方式之一请求 OLT支持的工作能力: 新建 一个消息, 消息用于请求 OLT支持的工作能力; 增加现有消息的字节; 利用 现有消息或上行帧中部分字节的保留域; OLT 通过以下方式之一请求 ONU 支持的工作能力: 新建一个消息, 消息用于请求 ONU 支持的工作能力; 增 加现有消息的字节; 利用现有消息或下行帧中部分字节的保留域。 优选地, OLT将自身支持的工作能力发送给 ONU包括通过以下方式之 一来发送: 新建一个消息, 消息用于发送 OLT支持的工作能力; 增加现有消 息的字节; 利用现有消息或下行帧中部分字节的保留域, ONU将自身支持的 工作能力发送给 OLT包括通过以下方式之一来发送: 新建一个消息, 消息用 于发送 ONU 支持的工作能力; 增加现有消息的字节; 利用现有消息或上行 帧中部分字节的保留域。
优选地, 上述的工作能力可以包括以下中之一: 处理物理层操作管理维 护消息的能力; 上行帧的突发模式开销; 最大上行带宽分配个数。 优选地, 上述的工作参数可以包括以下中之一: 发送的物理层操作管理 维护消息的个数; 上行帧的突发模式开销; 最大上行带宽分配个数。 优选地, 上述的现有消息可以包括: 物理层操作管理维护消息。 为了实现上述目的, 才艮据本发明的另一方面, 提供了一种无源光网络系 统。 该无源光网络系统包括: 光网络终端 OLT和光网络单元 ONU, 其中, OLT和 ONU相互发送自身支持的工作能力, OLT和 ONU根据接收到的对 方支持的工作能力来配置自身的工作参数。 优选地, 上述的工作能力包括以下中至少之一: 处理物理层操作管理维 护消息的能力; 上行帧的突发模式开销; 最大上行带宽分配个数。 优选地, 上述的工作参数包括以下中至少之一: 发送的物理层操作管理 维护消息的个数; 上行帧的突发模式开销; 最大上行带宽分配个数。 为了实现上述目的, 才艮据本发明的另一方面, 提供了一种无源光网络网 元。 该无源光网络网元包括: 发送模块, 用于发送自身支持的工作能力; 接 收模块, 用于接收其他网元支持的工作能力; 配置模块, 用于根据接收到的 其他网元支持的工作能力来配置自身的参数。 优选地, 发送模块利用以下方式之一来发送自身支持的工作能力: 新建 一个消息, 消息用于发送网元支持的工作能力; 增加现有消息的字节; 利用 现有消息、 上行帧和下行帧中部分字节的保留域。 优选地, 发送模块具体用于发送以下中之一: 处理物理层操作管理维护 消息的能力; 上行帧的突发模式开销; 最大上行带宽分配个数。 优选地, 上述的工作参数包括以下中至少之一: 发送的物理层操作管理 维护消息的个数; 上行帧的突发模式开销; 最大上行带宽分配个数。 通过本发明, 釆用 OLT将自身支持的工作能力发送给 ONU, ONU根据
接收到的 OLT支持的工作能力来配置自身的工作参数; ONU将自身支持的 工作能力发送给 OLT, OLT根据接收到的 ONU支持的工作能力来配置自身 的工作参数的方法, 解决了相关技术中 OLT和 ONU不能互相获取对方的工 作方式或工作能力而导致 OLT和 ONU通信效率降低的问题, 进而达到了提 高 OLT和 ONU之间通信效率的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是才艮据本发明实施例的无源光网络中处理的方法的示意图; 图 2是才艮据本发明实施例的无源光网络系统的示意图; 图 3是才艮据本发明实施例的无源光网络网元的示意图。 具体实施方式 考虑到相关技术中 OLT和 ONU不能互相获取对方的工作方式或工作能 力而导致 OLT和 ONU通信效率降低, 本发明实施例提供了无源光网络中处 理的方法, 该方法包括: OLT将自身支持的工作能力发送给 ONU, ONU才艮 据接收到的 OLT支持的工作能力来配置自身的工作参数; ONU将自身支持 的工作能力发送给 OLT, OLT根据接收到的 ONU支持的工作能力来配置自 身的工作参数。 需要说明的是, 在不冲突的情况下, 本申请中的实施例及实施例中的特 征可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 根据本发明的实施例, 提供了一种无源光网络中处理的方法。 图 1是才艮据本发明实施例的无源光网络中处理的方法的示意图。 如图 1所示, 该方法包括如下的步 4聚 S 102至步 4聚 S 104: 步骤 S 102, OLT将自身支持的工作能力发送给 ONU, ONU根据接收到 的 OLT支持的工作能力来配置自身的工作参数;
步骤 S 104 , ONU将自身支持的工作能力发送给 OLT, OLT根据接收到 的 ONU支持的工作能力来配置自身的工作参数。 其中, 以上两个步 4聚的顺序可以改变。 下面将结合实例对本发明实施例的实现过程进行详细描述。 OLT给 ONU发送的自身支持的工作方式和 /或工作能力可以通过下面的 方式传递: 7. After receiving the Serial_Number_ONU message sent by the ONU, the OLT calculates the ranging result EqD (Equalization Delay) and passes the measured result EqD through the Ranging Time. (Measure time) The message is sent to the ONU to complete the ONU registration activation process. However, during the registration activation process of the above ONU, the OLT and the ONU cannot acquire each other's working mode or working capability, which will cause the communication efficiency of the OLT and the ONU to drop. SUMMARY OF THE INVENTION The present invention has been made in view of the problem that the OLT and the ONU cannot acquire each other's working mode or working capability, and the communication efficiency of the OLT and the ONU is reduced. Therefore, the main object of the present invention is to provide a passive optical network. The method of processing in order to solve the above problem. In order to achieve the above object, in accordance with an aspect of the present invention, a method of processing in a passive optical network is provided. The method for processing in the passive optical network according to the present invention includes: the optical network terminal OLT sends the working capability supported by the optical network to the ONU of the optical network unit, and the ONU configures its working parameters according to the working capability supported by the received OLT; The ONU sends its own supported working capabilities to the OLT. The OLT configures its own working parameters according to the working capabilities supported by the received ONUs. Preferably, before the OLT sends the working capability supported by the OLT to the ONU, the method further includes: the ONU requests the OLT to send the working capability supported by the OLT; and before the ONU sends the working capability supported by the ONU to the OLT, the method further includes: Request the ONU to send the working capabilities supported by the ONU. Preferably, the ONU can request the working capability supported by the OLT in one of the following ways: Create a new message, request the working capability supported by the OLT; increase the byte of the existing message; use the existing message or part of the byte in the uplink frame Reserved domain; The OLT requests the working capacity supported by the ONU in one of the following ways: Create a new message, request the working capacity supported by the ONU; increase the bytes of the existing message; use the existing message or some bytes in the downstream frame Reserved domain. Preferably, the OLT sends the working capability supported by the OLT to the ONU, including sending in one of the following ways: creating a new message, the message is used to send the working capability supported by the OLT; adding the byte of the existing message; using the existing message or the downlink The reserved field of the partial byte in the frame, the ONU sends the working capability supported by the ONU to the OLT, including sending in one of the following ways: Creating a new message, the message is used to send the working capability supported by the ONU; adding the bytes of the existing message; Use existing messages or reserved fields of partial bytes in the upstream frame. Preferably, the foregoing working capability may include one of the following: processing the physical layer operation management maintenance message capability; burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number. Preferably, the foregoing working parameters may include one of the following: a number of physical layer operation management and maintenance messages sent; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number. Preferably, the foregoing existing message may include: a physical layer operation management maintenance message. In order to achieve the above object, according to another aspect of the present invention, a passive optical network system is provided. The passive optical network system includes: an optical network terminal OLT and an optical network unit ONU, wherein the OLT and the ONU mutually transmit the working capabilities supported by the OLT and the ONU, and the OLT and the ONU configure their own working parameters according to the received working capability supported by the other party. Preferably, the foregoing working capability includes at least one of the following: processing the physical layer operation management maintenance message capability; burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number. Preferably, the foregoing working parameters include at least one of the following: a number of physical layer operation management and maintenance messages sent; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number. In order to achieve the above object, according to another aspect of the present invention, a passive optical network element is provided. The passive optical network network element includes: a sending module, configured to send a working capability supported by the network; a receiving module, configured to receive working capability supported by other network elements; and a configuration module, configured to work according to the received other network element support Ability to configure its own parameters. Preferably, the sending module uses one of the following methods to send the working capability supported by itself: Create a new message, the message is used to send the working capability supported by the network element; increase the bytes of the existing message; use the existing message, the uplink frame, and the downlink The reserved field of a partial byte in the frame. Preferably, the sending module is specifically configured to send one of the following: the capability of processing the physical layer operation management and maintenance message; the burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number. Preferably, the foregoing working parameters include at least one of the following: a number of physical layer operation management and maintenance messages sent; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number. Through the invention, the OLT is used to send the working capability supported by the OLT to the ONU, and the ONU is based on The working capacity supported by the OLT is configured to configure its own working parameters. The ONU sends its own supported working capability to the OLT. The OLT configures its working parameters according to the working capabilities supported by the received ONU, and solves the related technologies. The OLT and the ONU cannot obtain each other's working mode or working capability, which causes the communication efficiency of the OLT and the ONU to be reduced, thereby achieving the effect of improving the communication efficiency between the OLT and the ONU. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a method of processing in a passive optical network according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a passive optical network system according to an embodiment of the present invention; A schematic diagram of a passive optical network element according to an embodiment of the present invention. The embodiment of the present invention provides a method for processing in a passive optical network, and the method includes: OLT, in view of the related art, in which the OLT and the ONU cannot obtain each other's working mode or working capability, and the communication efficiency of the OLT and the ONU is reduced. The working capacity of the ONU is sent to the ONU, and the ONU configures its working parameters according to the received working capabilities of the OLT. The ONU sends its own supported working capabilities to the OLT. The OLT supports the working capabilities supported by the received ONUs. To configure your own working parameters. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. In accordance with an embodiment of the present invention, a method of processing in a passive optical network is provided. 1 is a schematic diagram of a method of processing in a passive optical network in accordance with an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: step S102 to step 4: S102: Step S102, the OLT sends the working capability supported by the OLT to the ONU, and the ONU is configured according to the working capability supported by the received OLT. Its own working parameters; Step S104: The ONU sends the working capability supported by the ONU to the OLT, and the OLT configures its working parameters according to the working capability supported by the received ONU. The order of the above two steps can be changed. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples. The working mode and/or working ability of the OLT to the ONU to support itself can be delivered in the following manner:
1、 OLT通过下行帧 PCBd i或的带宽分配结构 (Allocation Structure ) 中 Flags的保留域 (比特 6-0 ) 传递; 1. The OLT passes the reserved field (bit 6-0) of the Flags in the bandwidth allocation structure (Allocation Structure) of the downlink frame PCBd i;
2、 OLT通过下行帧的 IDENT i或的保留位 bit31传递; 3、 OLT通过下行帧的 PLEND i或的第二个 12bit (原用于传输 ATM长度 的 12bit ) 传递; 2. The OLT transmits the IDENT i or the reserved bit bit31 of the downlink frame; 3. The OLT transmits the PLEND i of the downlink frame or the second 12 bit (the original 12 bit used for transmitting the length of the ATM);
4、 OLT通过增加现有 PLOAM消息的字节传递, 例如在包含上行开销 ( Upstream—Overhead )的 PLOAM消息即 Upstream—overhead parameter消息 中增加了一个字节, 增加的一个字节为第 13个字节, 如表 1所示, OLT利 用该字节传递;
4. The OLT adds a byte by adding a byte transfer of the existing PLOAM message, for example, a PLOAM message containing an uplink overhead (Upstream_Overhead), that is, an Upstream_overhead parameter message, and the added byte is the 13th word. Section, as shown in Table 1, the OLT uses the byte to pass;
表 1 Upstream—Overhead消息格式 Table 1 Upstream—Overhead message format
5、 OLT通过新建的 PLOAM消息传递, 新建的 PLOAM消息如表 2所 表 2 Ability OLT消息格式 5. The OLT passes the newly created PLOAM message, and the newly created PLOAM message is as shown in Table 2. Table 2 Ability OLT message format
ONU给 OLT发送的自身支持的工作方式和 /或工作能力可以通过下面的 方式传递: The working mode and/or working ability of the ONU to support the OLT to send itself can be delivered in the following way:
1、 ONU 通过包含 Serial Number 信息的 PLOAM 消息 (消息名为 Serial Number ONU ) 中的第 12字节的 bit3-2传递; 1. The ONU is passed through bit 3-2 of the 12th byte in the PLOAM message (the message name Serial Number ONU ) containing the Serial Number information;
2、 ONU也可以通过上行帧的 IND i或的 bit4-0传递; 2. The ONU can also be transmitted through the IND i or bit 4-0 of the upstream frame;
3、 ONU通过增加现有 PLOAM消息的字节传递, 例如在包含序列号信 息( Serial Number )的 PLOAM消息即 Serial Number ONU消息中增力口了一 个字节, 增加的一个字节为第 13个字节, 如表 3所示, ONU利用该字节传 3. The ONU increases the byte transfer of the existing PLOAM message. For example, in the PLOAM message containing the serial number information (Serial Number), the Serial Number ONU message is increased by one byte, and the added byte is the 13th. Byte, as shown in Table 3, the ONU uses this byte to pass
表 3 , Serial Number ONU消息格式 Table 3, Serial Number ONU message format
字节编号 内容 描述 Byte number Content Description
1 11111111或 还没有分配 ONU-ID 1 11111111 or No ONU-ID has been assigned yet
ONU-ID 如果此 ONU-ID被分配给该 ONU ONU-ID if this ONU-ID is assigned to the ONU
2 00000001 表明消息类型为" Serial_Number_ONU" 2 00000001 indicates that the message type is "Serial_Number_ONU"
3 VID1 Vendor_ID的第 1字节 3 VID1 Vendor_ID byte 1
4 VID2 Vendor_ID的第 2字节 4 VID2 Vendor_ID byte 2
5 VID3 Vendor_ID的第 3字节 5th byte of VID3 Vendor_ID
6 VID4 Vendor_ID的第 4字节 6th byte of VID4 Vendor_ID
7 VSSN1 特定 Vendor的序列号的第 1字节 7 VSSN1 specific Vendor's serial number of the first byte
8 VSSN2 特定 Vendor的序列号的第 2字节 8 VSSN2 specific Vendor's serial number of the second byte
9 VSSN3 特定 Vendor的序列号的第 3字节 9 VSSN3 specific Vendor's serial number 3rd byte
10 VSSN4 特定 Vendor的序列号的第 4字节 10 VSSN4 specific Vendor serial number 4th byte
11 RRRRRRRR 当发送此消息时, ONU的随机延时 (MSB) (以 32字节 为单位) 11 RRRRRRRR Random delay (MSB) of ONU (in 32-byte units) when sending this message
12 RRRRAGTT RRRR = 当发送此消息时, ONU的随机延时 (LSB ) 12 RRRRAGTT RRRR = Random Delay (LSB) of ONU when sending this message
(以 32字节为单位) (in 32-byte units)
A = 0 A = 0
G =此 ONU支持 GEM传送(G=l-支持) G = This ONU supports GEM transmission (G=l-support)
TT = ONU的发送光功率电平模式 TT = ONU transmit optical power level mode
ττ=οο: 低功率 Ττ=οο: low power
ΤΤ=01 : 中等功率 ΤΤ=01 : Medium power
ΤΤ=10: 高功率 ΤΤ=10: High power
ΤΤ=11 : 预留
13 LLLLLLLL ONU支持的工作方式和 /或工作能力 ΤΤ=11 : Reserved 13 LLLLLLLL ONU supported working methods and / or working ability
14 CRC 14 CRC
4、 ONU通过新建的 PLOAM消息传递, 新建的 PLOAM消息如表 4所 4. The ONU is delivered through the newly created PLOAM message, and the newly created PLOAM message is as shown in Table 4.
表 4, Ability ONU消息格式 Table 4, Ability ONU message format
OLT和 ONU可以釆用上述各种方法的组合+办商彼 J¾的工作方式和工作 能力。 实施例一 OLT and ONU can use the combination of the above various methods + the working mode and working ability of the business. Embodiment 1
OLT和 ONU主动给对方发送自身支持的工作方式和 /或工作能力的注册 激活方法。 The OLT and the ONU actively send the registration activation method of the working mode and/or working ability supported by the other party.
GPON 系统中, 在 ONU注册激活过程中, OLT与 ONU协商各自处理 PLOAM消息的能力, 包括: In the GPON system, during the ONU registration activation process, the OLT and the ONU negotiate their respective capabilities for processing PLOAM messages, including:
1 , OLT在一个上行突发时隙内可以处理的 PLOAM消息的最大个数, 1 , the maximum number of PLOAM messages that the OLT can process in an uplink burst slot,
2 , ONU在一个下行帧内可以处理的 PLOAM消息的最大个数。 ONU的 注册激活过程主要包括以下几个步骤: 2, the maximum number of PLOAM messages that the ONU can process in one downlink frame. The ONU registration activation process mainly includes the following steps:
( 1 )ONU侦听 OLT发送的下行 GTC( GPON Transmission Convergence, GPON传输汇聚) 帧并获取帧同步; (1) The ONU listens to the downlink GTC (GPON Transmission Convergence) frame sent by the OLT and acquires frame synchronization;
( 2 ) ONU侦听并获取 OLT周期性发送的参数配置; (2) The ONU listens and acquires the parameter configuration periodically sent by the OLT;
( 3 ) OLT给 ONU发送 SN_Request时, OLT通过下行帧 PCBd域的带 宽分配结构 ( Allocation Structure ) 中 Flags的保留域传递给 ONU下述信息:
OLT在一个上行突发时隙内可以处理的 PLOAM消息的最大个数。 当 Flags 的 bitl-0的值为 00时, 表示此 ONU在一个上行突发时隙内最大可以发送一 个 PLOAM消息; 当 Flags的 bitl-0的值为 01时, 表示此 ONU在一个上行 突发时隙内最大可以发送两个 PLOAM消息;当 Flags的 bitl-0的值为 10时, 表示此 ONU 在一个上行突发时隙内最大可以发送三个 PLOAM 消息; 当 Flags的 bitl-0的值为 11时,表示此 ONU在一个上行突发时隙内最大可以发 送四个 PLOAM消息。 未注册激活的 ONU侦听到 OLT发送的上述 SN_Request后, ONU存储 OLT 处理 PLOAM 消 息的能力参数, 然后 ONU 向 OLT 应答 Serial_Number_ONU消息, 该消息中携带有 ONU的序列号, ONU通过包含 Serial Number ONU消息的第 12字节的 bit3-2传递给 OLT下述信息: 当前 ONU 在一个下行帧 内可以处理的 PLOAM 消息的最大个数。 当 Serial Number ONU的第 12字节的 bit3-2位的值为 00时,表示 OLT在一个 下行帧内给此 ONU最大可以发送一个 PLOAM消息;当 Serial_Number_ONU 的最低字节的 bit3-2位的值为 01时,表示 OLT在一个下行帧内给此 ONU最 大可以发送两个 PLOAM消息; 当 Serial_Number_ONU的最低字节的 bit3-2 位的值为 10 时, 表示 OLT 在一个下行帧内给此 ONU 最大可以发送三个 PLOAM消息; 当 Serial_Number_ONU的最氐字节的 bit3-2位的值为 11时, 表示 OLT在一个下行帧内给此 ONU最大可以发送四个 PLOAM消息。 ( 4 ) OLT收到某个 ONU发送的 Serial_Number_ONU消息并获得相应 的序列号后, OLT存储 ONU的 PLOAM消息处理能力参数, 并向该 ONU 通过发送 Assign_ONU-ID (分配 ONU标识)消息向该 ONU分配 ONU-ID, 进入测距过程; (3) When the OLT sends the SN_Request to the ONU, the OLT transmits the following information to the ONU through the reserved field of Flags in the bandwidth allocation structure (Allocation Structure) of the downlink frame PCBd domain: The maximum number of PLOAM messages that the OLT can process in an upstream burst slot. When the value of bitl-0 of Flags is 00, it indicates that the ONU can send a maximum of one PLOAM message in one uplink burst slot; when the value of bitl-0 of Flags is 01, it indicates that the ONU is in an uplink burst. A maximum of two PLOAM messages can be sent in a time slot; when the value of bitl-0 of Flags is 10, it indicates that the ONU can send up to three PLOAM messages in one uplink burst slot; when the value of bitl-0 of Flags When it is 11, it means that the ONU can send up to four PLOAM messages in one uplink burst slot. After the unregistered ONU detects the SN_Request sent by the OLT, the ONU stores the capability parameter of the OLT to process the PLOAM message, and then the ONU responds to the OLT with the Serial_Number_ONU message, the message carries the serial number of the ONU, and the ONU passes the Serial Number ONU message. The bit 3-2 of the 12th byte is passed to the OLT with the following information: The maximum number of PLOAM messages that the current ONU can process in one downstream frame. When the value of the bit 3-2 of the 12th byte of the Serial Number ONU is 00, it indicates that the OLT can send a PLOAM message to the ONU in a downlink frame; when the lowest byte of the Serial_Number_ONU is in the value of bit 3-2 When it is 01, it indicates that the OLT can send two PLOAM messages to the ONU in one downlink frame. When the value of bit 3-2 of the lowest byte of Serial_Number_ONU is 10, it indicates that the OLT gives the ONU the maximum in one downlink frame. Three PLOAM messages can be sent; when the value of bit 3-2 of the last byte of Serial_Number_ONU is 11, it indicates that the OLT can send up to four PLOAM messages to the ONU in one downlink frame. (4) After the OLT receives the Serial_Number_ONU message sent by an ONU and obtains the corresponding sequence number, the OLT stores the PLOAM message processing capability parameter of the ONU, and assigns the ONU to the ONU by sending an Assign_ONU-ID (Assignment of ONU Identity) message. ONU-ID, enters the ranging process;
( 5 ) OLT向该 ONU发送 Ranging_Request (测距请求 ), 开始对该 ONU 进行测距; (5) The OLT sends a Ranging_Request (Ranging Request) to the ONU, and starts ranging the ONU;
( 6 ) 该 ONU 收到 Ranging Request 后 , 仍然向 OLT 响应 Serial Number ONU消息; (6) After receiving the Ranging Request, the ONU still responds to the OLT with a Serial Number ONU message;
( 7 ) OLT收到该 ONU发送的 Serial_Number_ONU消息后, 计算测距 结果 EqD ( Equalization Delay , 均衡延迟) 并将测距结果 EqD 通过 Ranging_Time (测距时间) 消息发送给该 ONU, 完成 ONU注册激活过程。
在本实施例中, OLT和 ONU在 ONU的注册激活阶段协商了彼此支持的 PLOAM消息处理能力, 而且没有改变 ONU注册激活的流程。 OLT与 ONU 协商过程完成后,当 OLT在下行帧内给各个 ONU发送 PLOAM消息时, OLT 按照上述协商结果发送 PLOAM消息; 当 OLT允许 ONU在上行突发时隙内 发送 PLOAM消息时, ONU按照上述协商结果发送 PLOAM消息。 本实施例说明了利用两个比特的四种状态说明了 OLT和 ONU最多能处 理上述四个 PLOAM消息, 也可以改变两个比特的四个状态的定义, 例如 00 表示能够处理 2个 PLOAM消息, 01表示能够处理 4个 PLOAM消息, 10 表示能够处理 6个 PLOAM消息, 11表示能够处理 8个 PLOAM消息。 也可 以增加比特数表示更多的状态说明 OLT和 ONU的 PLOAM消息处理能力。 本实施例给出了 OLT通过下行帧 PCBd域的带宽分配结构 (Allocation Structure )中 Flags的保留域传递自身的 PLOAM消息处理能力。 OLT也可以 通过下行帧的 IDENT域的保留位 bit31传递自身的 PLOAM消息处理能力, 例如, 当 IDENT域的 bit31的值为 0时, 表示此 ONU在一个上行突发时隙 内最大可以发送一个 PLOAM消息; 当 IDENT的 bit31的值为 1时, 表示此 ONU在一个上行突发时隙内最大可以发送两个 PLOAM消息(也可以改变一 个比特的两个状态的定义; 再如, 当 IDENT域的 bit31的值为 0时, 表示此 ONU 在一个上行突发时隙内最大可以发送不超过五个 PLOAM 消息; 当 IDENT的 bit31的值为 1 时, 表示此 ONU在一个上行突发时隙内最大可以 发送五个 PLOAM消息;)。 OLT也可以通过下行帧的 PLEND i或的第二个 12bit i或中的 bit9-8传递自身的 PLOAM消息处理能力, 当 PLEND的 bit9-8的值 为 00时, 表示此 ONU在一个上行突发时隙内最大可以发送一个 PLOAM消 息; 当 PLEND的 bit9-8的值为 01时, 表示此 ONU在一个上行突发时隙内 最大可以发送两个 PLOAM消息; 当 PLEND的 bit9-8的值为 10时, 表示此 ONU在一个上行突发时隙内最大可以发送三个 PLOAM消息; 当 PLEND的 bit9-8的值为 11时, 表示此 ONU在一个上行突发时隙内最大可以发送四个 PLOAM 消息 (也可以改变两个比特的四个状态的定义)。 OLT 也可以通过 Extended Burst Length消息的部分字节传递自身支持的 PLOAM消息处理能 力。 本实施例给出了 ONU通过 Serial_Number_ONU信息的第 12字节传递 自身的 PLOAM消息处理能力。 ONU也可以通过上行帧的 IND域的 bit4-0 传递自身的 PLOAM消息处理能力, 如果 ONU利用上行帧的 IND域的 bitO
传递自身的 PLOAM消息处理能力, 当 IND的 bitO位的值为 0时,表示 OLT 在一个下行帧内给此 ONU最大可以发送一个 PLOAM消息; 当 IND的 bitO 位的值为 1 时, 表示 OLT 在一个下行帧内给此 ONU 最大可以发送两个 PLOAM消息(也可以改变一个比特的两个状态的定义, 比如, 当 IND的 bitO 位的值为 0时, 表示 OLT在一个下行帧内给此 ONU最大可以发送不超过五 个 PLOAM消息; 当 IND的 bitO位的值为 1时, 表示 OLT在一个下行帧内 给此 ONU最大可以发送五个 PLOAM消息)。 如果此处 ONU利用上行帧的 IND域的 bit2-0传递自身的 PLOAM消息处理能力, 则可以表示更多级别的 ONU的 PLOAM消息处理能力, 能够更好地表示 ONU 自身的 PLOAM消息 处理能力。 (7) After receiving the Serial_Number_ONU message sent by the ONU, the OLT calculates the ranging result EqD (Equalization Delay) and sends the ranging result EqD to the ONU through the Ranging_Time (Ranging Time) message to complete the ONU registration activation process. . In this embodiment, the OLT and the ONU negotiate the PLOAM message processing capabilities supported by each other during the registration activation phase of the ONU, and the flow of activation of the ONU registration is not changed. After the negotiation process between the OLT and the ONU is completed, when the OLT sends a PLOAM message to each ONU in the downlink frame, the OLT sends a PLOAM message according to the foregoing negotiation result; when the OLT allows the ONU to send a PLOAM message in the uplink burst slot, the ONU follows the above. The result of the negotiation sends a PLOAM message. This embodiment illustrates that the four states of the two bits indicate that the OLT and the ONU can process the above four PLOAM messages at most, and can also change the definition of four states of two bits. For example, 00 indicates that two PLOAM messages can be processed. 01 indicates that 4 PLOAM messages can be processed, 10 indicates that 6 PLOAM messages can be processed, and 11 indicates that 8 PLOAM messages can be processed. It is also possible to increase the number of bits to indicate more states indicating the PLOAM message processing capabilities of the OLT and ONU. This embodiment provides that the OLT transmits its own PLOAM message processing capability through the reserved field of Flags in the bandwidth allocation structure (Allocation Structure) of the downlink frame PCBd domain. The OLT can also transmit its own PLOAM message processing capability through the reserved bit bit 31 of the IDENT field of the downlink frame. For example, when the value of bit 31 of the IDENT field is 0, it indicates that the ONU can send a maximum of one PLOAM in one uplink burst slot. Message; When the value of bit 31 of IDENT is 1, it means that the ONU can send two PLOAM messages in one uplink burst slot (it can also change the definition of two states of one bit; for example, when IDENT domain When the value of bit31 is 0, it indicates that the ONU can send no more than five PLOAM messages in one uplink burst slot. When the value of bit 31 of IDENT is 1, it indicates that the ONU is the largest in one uplink burst slot. Can send five PLOAM messages ;). The OLT can also transmit its own PLOAM message processing capability through the PLEND i of the downlink frame or the second 12bit i or the bit 9-8 of the downlink frame. When the value of the bit 9-8 of the PLEND is 00, it indicates that the ONU is in an uplink burst. A maximum of one PLOAM message can be sent in a time slot; when the value of bit 9-8 of PLEND is 01, it indicates that the ONU can send two PLOAM messages in one uplink burst slot; when the value of bit 9-8 of PLEND is 10:00, indicating that the ONU can send up to three PLOAM messages in one uplink burst slot; when the value of bit 9-8 of PLEND is 11, it indicates that the ONU can send up to four in one uplink burst slot. PLOAM message (you can also change the definition of the four states of two bits). The OLT can also pass its own supported PLOAM message processing capability through part of the bytes of the Extended Burst Length message. This embodiment shows that the ONU passes its own PLOAM message processing capability through the 12th byte of the Serial_Number_ONU information. The ONU can also pass its own PLOAM message processing capability through the bit 4-0 of the IND field of the upstream frame, if the ONU utilizes the bitO of the IND field of the upstream frame. Passing its own PLOAM message processing capability, when the value of the bitO bit of the IND is 0, it means that the OLT can send a maximum of one PLOAM message to the ONU in one downlink frame; when the value of the bitO bit of the IND is 1, it indicates that the OLT is A maximum of two PLOAM messages can be sent to the ONU in a downlink frame (the definition of two states of one bit can also be changed. For example, when the value of the bitO bit of the IND is 0, it indicates that the OLT gives the ONU in a downlink frame. A maximum of five PLOAM messages can be sent; when the value of the bit O bit of the IND is 1, it indicates that the OLT can send up to five PLOAM messages to the ONU in one downlink frame. If the ONU here uses the bit 2-0 of the IND field of the uplink frame to transmit its own PLOAM message processing capability, it can indicate the PLOAM message processing capability of more levels of ONUs, and can better represent the ONU's own PLOAM message processing capability.
OLT也可以利用下行帧或 PLOAM消息的其他保留域主动给 ONU发送 自身支持的 PLOAM消息处理能力, ONU也可以利用上行帧或 PLOAM消息 的其他保留域主动给 OLT发送自身支持的 PLOAM消息处理能力。 The OLT can also use the downlink frame or other reserved fields of the PLOAM message to actively send the ONU to support the PLOAM message processing capability. The ONU can also use the uplink frame or other reserved fields of the PLOAM message to actively send the PLOAM message processing capability supported by the OLT.
OLT也可以在下行帧中增加一个 i或传递自身的 PLOAM消息处理能力; ONU也可以在上行帧中增加一个域传递自身的 PLOAM消息处理能力。 利用本实施例的方法, OLT和 ONU也可以十办商 GPON系统上行帧的突 发模式开销 ( Burst Mode Overhead )中各个参数,例如保护时间( Guard time ), 前导 ( Preamble ) 和定界 ( Delimiter ); OLT和 ONU也可以协商最大上行带 宽分配个数等。 实施例二 如果 ITU标准组织规划增加 PON系统的 PLOAM消息字节数, OLT和 ONU可以在 ONU的注册激活过程中通过 PLOAM消息中增加的字节传递自 身支持的 PLOAM消息处理能力, ONU的注册激活过程主要包括以下几个步 骤: ( 1 )ONU侦听 OLT发送的下行 GTC( GPON Transmission Convergence,The OLT can also add an i or transmit its own PLOAM message processing capability to the downstream frame. The ONU can also add a domain to transmit its own PLOAM message processing capability in the upstream frame. With the method of the embodiment, the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations. Embodiment 2 If the ITU standard organization plans to increase the number of PLOAM message bytes of the PON system, the OLT and the ONU can transmit the PLOAM message processing capability supported by the PLOAM message during the registration activation process of the ONU, and the ONU registration is activated. The process mainly includes the following steps: (1) The ONU listens to the downlink GTC (GPON Transmission Convergence, OLT) sent by the OLT.
GPON传输汇聚) 帧并获取帧同步; GPON transmission convergence) frames and acquire frame synchronization;
( 2 ) OLT周期性发送 Upstream Overhead消息, OLT在上述消息的最 后一个字节前面增力 p了一个字节, 变^ ^后的 Upstream_overhead 消息的格式 如表 5所示, 增加的一个字节为第 13个字节, 该字节用于传输 ONU在一个 上行突发时隙内允许发送 PLOAM消息的最大个数的信息。 ONU接收到上述
Upstream overhead 消息后, 根据上述消息各字节的内容配置自身的工作参 数。 表 5 , Upstream—Overhead消息格式 (2) The OLT periodically sends an Upstream Overhead message, and the OLT increases the power by one byte in front of the last byte of the above message. The format of the Upstream_overhead message after changing ^^ is as shown in Table 5. The added byte is The 13th byte, which is used to transmit the maximum number of PLOAM messages allowed to be sent by the ONU in an uplink burst slot. ONU received the above After the Upstream overhead message, configure its own working parameters according to the contents of each byte of the above message. Table 5, Upstream—Overhead Message Format
( 3 ) 未注册激活的 ONU侦听 OLT发送的 SN_Request (序列号请求;), 收到 SN_Request后向 OLT应答 Serial_Number_ONU( ONU序列号)消息(该 消息中携带有 ONU的序列号), ONU在上述消息的最后一个字节前面增加 了一个字节, 变化后的 Serial_Number_ONU消息的格式如表 6所示, 增加的 一个字节为第 13个字节, 该字节用于传输 OLT在一个下行帧内允许给上述
ONU发送 PLOAM消息的最大个数的信息。 表 6 Serial Number ONU消息格式 (3) The unregistered ONU listens to the SN_Request (serial number request;) sent by the OLT, and after receiving the SN_Request, it responds to the OLT with the Serial_Number_ONU (ONU serial number) message (the message carries the serial number of the ONU), and the ONU is in the above A byte is added in front of the last byte of the message. The format of the changed Serial_Number_ONU message is as shown in Table 6. The added byte is the 13th byte, which is used to transmit the OLT in a downlink frame. Allowed for the above The ONU sends the maximum number of PLOAM messages. Table 6 Serial Number ONU message format
( 4 ) OLT收到某个 ONU发送的 Serial_Number_ONU消息并获得相应 的序列号后, 才艮据上述消息的内容配置自身的工作参数。 OLT向该 ONU通 过发送 Assign_ONU-ID (分配 ONU标识) 消息向该 ONU分配 ONU-ID, 进入测距过程; (4) After receiving the Serial_Number_ONU message sent by an ONU and obtaining the corresponding serial number, the OLT configures its own working parameters according to the content of the above message. The OLT assigns an ONU-ID to the ONU by sending an Assign_ONU-ID (allocation ONU identifier) message to the ONU, and enters a ranging process;
( 5 ) OLT向该 ONU发送 Ranging_Request (测距请求 ), 开始对该 ONU 进行测距;
( 6 ) 该 ONU 收到 Ranging Request 后 , 仍然向 OLT 响应 Serial Number ONU消息; (5) The OLT sends a Ranging_Request (Ranging Request) to the ONU, and starts ranging the ONU; (6) After receiving the Ranging Request, the ONU still responds to the OLT with the Serial Number ONU message;
( 7 ) OLT收到该 ONU发送的 Serial_Number_ONU消息后, 计算测距 结果 EqD ( Equalization Delay , 均衡延迟) 并将测距结果 EqD 通过 Ranging_Time (测距时间) 消息发送给该 ONU, 完成 ONU注册激活过程。 利用本实施例的方法, OLT和 ONU也可以十办商 GPON系统上行帧的突 发模式开销 ( Burst Mode Overhead )中各个参数,例如保护时间( Guard time ), 前导 ( Preamble ) 和定界 ( Delimiter ); OLT和 ONU也可以协商最大上行带 宽分配个数等。 实施例三 (7) After receiving the Serial_Number_ONU message sent by the ONU, the OLT calculates the ranging result EqD (Equalization Delay) and sends the ranging result EqD to the ONU through the Ranging_Time (Ranging Time) message to complete the ONU registration activation process. . With the method of the embodiment, the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations. Embodiment 3
OLT 和 ONU 也可以在 ONU 的注册激活过程中, 通过增加一个新的 PLOAM消息传递自身的 PLOAM消息处理能力。 ONU的注册激活主要包括 以下步 4聚: The OLT and ONU can also pass their own PLOAM message processing capabilities by adding a new PLOAM message during the ONU registration activation process. The ONU registration activation mainly includes the following steps:
ONU侦听 OLT发送的下行 GTC ( GPON Transmission Convergence, GPON传输汇聚) 帧并获取帧同步; The ONU listens to the downlink GTC (GPON Transmission Convergence) frame sent by the OLT and acquires frame synchronization;
OLT周期性发送的名为 Upstream_Overhead的 PLOAM消息, ONU侦听 并获取 Upstream Overhead消息中的参数配置; The PLOAM message sent by the OLT is called Upstream_Overhead. The ONU listens and obtains the parameter configuration in the Upstream Overhead message.
OLT在给 ONU发送 SN_Request时,在下行帧中发送如表 7所示的名称 为 PLOAM_Ability_OLT的 PLOAM消息,此消息用于 OLT传递自身 PLOAM 消息处理能力, 上述消息的第一个字节的内容为接收此 PLOAM 消息的 ONU-ID , ONU-ID的值为 11111111 , 表示此 PLOAM消息是发给所有 ONU 的 广 播 消 息 ; 第 二 个 字 节 表 示 此 PLOAM 消 息 的 类 型 为 PLOAM Ability OLT , 即 OLT的 PLOAM消息处理能力; 第三个字节表示 ONU在一个上行突发时隙内允许发送 PLOAM消息的最大个数;第四到第十 个个字节的含义未定义, 为保留域; 第十三个字节的校验域。 未注册激活的 ONU侦听 OLT发送的 SN_Request (序列号请求;), 收到 SN_Request后存储 此 帧 中 的 PLOAM_Ability_OLT 消 息 的 内 容 , 并 向 OLT 应 答 Serial Number ONU ( ONU序列号)消息(该消息中携带有 ONU的序列号);
表 7 PLOAM Ability OLT消息格式 When the OLT sends the SN_Request to the ONU, the OLT sends a PLOAM message named PLOAM_Ability_OLT as shown in Table 7 in the downlink frame. The message is used by the OLT to transmit its own PLOAM message processing capability. The content of the first byte of the message is received. The ONU-ID of the PLOAM message, the value of the ONU-ID is 11111111, indicating that the PLOAM message is a broadcast message sent to all ONUs; the second byte indicates that the type of the PLOAM message is PLOAM Ability OLT, that is, the PLOAM message of the OLT Processing capacity; the third byte indicates the maximum number of PLOAM messages allowed to be sent by the ONU in an uplink burst slot; the meaning of the fourth to tenth bytes is undefined, which is reserved; the thirteenth word The check field of the section. The unregistered ONU listens to the SN_Request (serial number request;) sent by the OLT, and stores the content of the PLOAM_Ability_OLT message in the frame after receiving the SN_Request, and responds to the OLT with the Serial Number ONU (ONU serial number) message (which is carried in the message) There is a serial number of the ONU); Table 7 PLOAM Ability OLT message format
OLT收到某个 ONU发送的 Serial_Number_ONU消息并获得相应的序列 号后, OLT向该 ONU通过发送 Assign_ONU-ID (分配 ONU标识) 消息向 该 ONU分配 ONU-ID, 进入测 巨过程。 After receiving the Serial_Number_ONU message sent by an ONU and obtaining the corresponding sequence number, the OLT sends an ONU-ID to the ONU by sending an Assign_ONU-ID message to the ONU to enter the measurement process.
OLT给 ONU发送测距请求, ONU收到上述测距请求后, 给 OLT发送 如表 8所示的名为 PLOAM_Ability_ONU的 PLOAM消息,此消息用于 ONU 传递自身 PLOAM消息处理能力, PLOAM_Ability_ONU消息的第一个字节 的内容为发送此 PLOAM消息的 ONU-ID; 第二个字节表示此 PLOAM消息 的类型为 PLOAM_Ability_ONU, 即 ONU的 PLOAM消息处理能力; 第三 个字节表示 OLT在一个下行帧内允许给此 ONU发送 PLOAM消息的最大个 数; 第四到第十个个字节的含义未定义, 为保留域; 第十三个字节的校验域。 The OLT sends a ranging request to the ONU. After receiving the ranging request, the ONU sends a PLOAM message named PLOAM_Ability_ONU to the OLT as shown in Table 8. This message is used by the ONU to transmit its own PLOAM message processing capability, and the PLOAM_Ability_ONU message is first. The content of the byte is the ONU-ID of the PLOAM message; the second byte indicates that the type of the PLOAM message is PLOAM_Ability_ONU, that is, the PLOAM message processing capability of the ONU; the third byte indicates that the OLT allows in a downlink frame. The maximum number of PLOAM messages sent to this ONU; the meaning of the fourth to tenth bytes is undefined, which is reserved; the thirteenth byte check field.
PLOAM Ability ONU PLOAM Ability ONU
OLT 收到 ONU 发送的 PLOAM_Ability_ONU 消 息后 , 存储 PLOAM Ability ONU消息中携带的 ONU的 PLOAM消息处理能力, 并计 算测距结果 EqD ( Equalization Delay, 均衡延迟) 并将测距结果 EqD 通过 Ranging Time (测距时间) 消息发送给该 ONU, 完成 ONU注册激活过程。 利用本实施例的方法, OLT和 ONU也可以十办商 GPON系统上行帧的突 发模式开销 ( Burst Mode Overhead )中各个参数,例如保护时间( Guard time ),
前导 ( Preamble ) 和定界 ( Delimiter ); OLT和 ONU也可以协商最大上行带 宽分配个数等。 实施例四 After receiving the PLOAM_Ability_ONU message sent by the ONU, the OLT stores the PLOAM message processing capability of the ONU carried in the PLOAM Ability ONU message, calculates the ranging result EqD (Equalization Delay), and passes the ranging result EqD through the Ranging Time. Time) The message is sent to the ONU, completing the ONU registration activation process. With the method of the embodiment, the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as Guard time. Preamble and Delimiter; OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations. Embodiment 4
OLT主动发送自身支持的工作方式和 /或工作能力, ONU在 OLT的请求 下发送自身支持的工作方式和 /或工作能力 The OLT actively sends its own supported working mode and/or working ability. The ONU sends its own supported working mode and/or working ability at the request of the OLT.
GPON系统中, 在 ONU注册激活过程中, OLT可以釆用实施例一、 实 施例二与实施例三的方式发送自身支持的工作方式和 /或工作能力。 当 OLT 给 ONU 发送序列号请求时, OLT 通过下行帧 PCBd 域的带宽分配结构 ( Allocation Structure ) 中 Flags的保留域请求 ONU的 PLOAM消息处理能 力。 当 Flags的 bit5的值为 0时, 表示此 ONU不需要上报其支持的 PLOAM 消息处理能力; 当 Flags的 bit5的值为 1时, 表示要求此 ONU上 4艮其支持的 PLOAM消息处理能力,当 ONU需要上报自身支持的 PLOAM消息处理能力 时, ONU按照实施例一、 实施例二与实施例三的方式上报自身的处理能力, 此处不再赘述。 利用本实施例的方法, OLT和 ONU也可以十办商 GPON系统上行帧的突 发模式开销 ( Burst Mode Overhead )中各个参数,例如保护时间( Guard time ), 前导 ( Preamble ) 和定界 ( Delimiter ); OLT和 ONU也可以协商最大上行带 宽分配个数等。 实施例五 GPON系统中, 在 ONU注册激活过程中, OLT可以釆用实施例一、 实 施例二与实施例三的方式发送自身支持的工作方式和 /或工作能力。 当 OLT 给 ONU发送测距请求时, OLT通过下行帧 PCBd域的分配结构 ( Allocation Structure ) 中 Flags的保留域请求 ONU的 PLOAM消息处理能力。 当 Flags 的 bit5的值为 0时, 表示此 ONU不需要上报其支持的 PLOAM消息处理能 力; 当 Flags的 bit5的值为 1时, 表示要求此 ONU上 4艮其支持的 PLOAM消 息处理能力。 当 ONU需要上报自身支持的 PLOAM消息处理能力时, ONU 可以按照下述方式响应 OLT的测距请求和 PLOAM消息处理能力请求。 In the GPON system, during the ONU registration activation process, the OLT can use the first embodiment, the second embodiment, and the third embodiment to send the working mode and/or working capability supported by the OLT. When the OLT sends a sequence number request to the ONU, the OLT requests the ONU's PLOAM message processing capability through the reserved field of the Flags in the Allocation Structure of the downlink frame PCBd domain. When the value of the bit 5 of the Flags is 0, it indicates that the ONU does not need to report the PLOAM message processing capability supported by the ONU. When the value of the bit 5 of the Flags is 1, it indicates that the PLOAM message processing capability supported by the ONU is required. When the ONU needs to report the PLOAM message processing capability supported by the ONU, the ONU reports its processing capability according to the first embodiment, the second embodiment, and the third embodiment, and details are not described herein again. With the method of the embodiment, the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations. Embodiment 5 In the GPON system, during the ONU registration activation process, the OLT may use the first embodiment, the second embodiment, and the third embodiment to send the working mode and/or working capability supported by the OLT. When the OLT sends a ranging request to the ONU, the OLT requests the ONU's PLOAM message processing capability through the reserved field of the Flags in the Allocation Structure of the downlink frame PCBd domain. When the value of bit 5 of Flags is 0, it indicates that the ONU does not need to report the PLOAM message processing capability supported by it; when the value of bit 5 of Flags is 1, it indicates that the ONU supports the PLOAM message processing capability supported by it. When the ONU needs to report its own supported PLOAM message processing capability, the ONU can respond to the OLT's ranging request and PLOAM message processing capability request in the following manner.
( 1 ) ONU发送自身的序列号信息时, ONU通过 Serial_Number_ONU 信息的第 12字节传递自身的 PLOAM消息处理能力。
( 2 ) ONU 发送自身的序列号信息的同时, ONU 也可以通过上行帧的 IND域的 bit4-0传递自身的 PLOAM消息处理能力。 (1) When the ONU sends its own serial number information, the ONU passes its PLOAM message processing capability through the 12th byte of the Serial_Number_ONU message. (2) While the ONU sends its own serial number information, the ONU can also transmit its own PLOAM message processing capability through bit 4-0 of the IND field of the upstream frame.
( 3 ) ONU向 OLT应答如表 6所示格式的 Serial_Number_ONU消息。 (3) The ONU responds to the OLT with a Serial_Number_ONU message in the format shown in Table 6.
( 4 )ONU向 OLT应答如表 8所示名为 PLOAM Ability ONU的 PLOAM 消息。 (4) The ONU responds to the OLT with a PLOAM message named PLOAM Ability ONU as shown in Table 8.
ONU也可以利用上行帧或 PLOAM消息的其他保留域主动给 OLT发送 自身支持的 PLOAM消息处理能力。 当 ONU需要上报自身支持的 PLOAM消息处理能力时, ONU按照上述 方式响应 OLT的测距请求及 ONU的处理 PLOAM消息能力, 其余步 4聚与实 施例一、 实施例二与实施例三相似, 此处不再赘述。 利用本实施例的方法, OLT和 ONU也可以十办商 GPON系统上行帧的突 发模式开销 ( Burst Mode Overhead )中各个参数,例如保护时间( Guard time ), 前导 ( Preamble ) 和定界 ( Delimiter ); OLT和 ONU也可以协商最大上行带 宽分配个数等。 实施例六 本实施例釆用 OLT和 ONU互相请求对方的 PLOAM消息处理能力, 然 后 OLT和 ONU回答对方的请求。 The ONU can also actively send the PLOAM message processing capability supported by the OLT to the OLT by using the uplink frame or other reserved fields of the PLOAM message. When the ONU needs to report the PLOAM message processing capability supported by the ONU, the ONU responds to the ranging request of the OLT and the PLOAM message capability of the ONU in the above manner, and the remaining steps are similar to the first embodiment, the second embodiment and the third embodiment. I won't go into details here. With the method of the embodiment, the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations. Embodiment 6 In this embodiment, the OLT and the ONU request each other's PLOAM message processing capability, and then the OLT and the ONU answer the other party's request.
OLT釆用实施例四和实施例五的方式请求 ONU的 PLOAM消息处理能 力, ONU釆用实施例四和实施例五的方式响应 OLT的请求(此处的 ONU响 应的方式不使用上行帧的 IND i或的 bit4 )。下面描述 ONU请求 OLT的 PLOAM 消息处理能力的过程。当 OLT给处于注册激活状态的 ONU发送 SN_Request, 处于注册激活状态的 ONU发送自身的序列号信息给 OLT时, ONU通过上行 帧的 IND i或的 bit4请求 OLT的 PLOAM消息处理能力。 当 IND i或的 bit4的 值为 0时, 表示此 OLT不需要发送其支持的 PLOAM消息处理能力; 当 IND 域的 bit4的值为 1时,表示此 OLT需要发送其支持的 PLOAM消息处理能力。 当 OLT接收到 ONU的序列号信息以及上行帧的 IND域的 bit4的值为 1时, OLT在给 ONU发送测距请求时, OLT通过实施例 1提出的利用下行帧 PCBd 域的分配结构( Allocation Structure )中 Flags的保留域 bit 1-0给 ONU发送自 身的 PLOAM消息处理能力; OLT也可以通过下行帧的 IDENT i或的保留位
bit31传递自身的 PLOAM消息处理能力; OLT也可以通过下行帧的 PLEND 域的 bit9-8传递自身的 PLOAM消息处理能力; OLT也可以通过如表 7所示 的新增 PLOAM消息相应 ONU的请求; OLT也可以利用下行帧或 PLOAM 消息的其他保留域给 ONU发送自身支持的 PLOAM消息处理能力。 如果 ITU标准组织规划增加 PON系统的 PLOAM消息字节数, OLT可 以通过 PLOAM消息中增加的字节传递自身支持的 PLOAM消息处理能力, 当 OLT接收到 ONU在发送序列号信息的同时上行帧的 IND域的 bit4的值为 1 时, OLT 在给 ONU 发送包含测距时间的 PLOAM 消息 (消息名称为 Ranging Time ) 时, 在上述消息的最后一个字节前面增加了一个字节, 变化 后的 Ranging_Time消息的格式如表 9所示,增加的一个字节为第 13个字节, 该字节用于传输 ONU在一个上行突发时隙内允许发送 PLOAM消息的最大 个数的信息。 表 9 Ranging Time消息格式 The OLT requests the ONU's PLOAM message processing capability in the manners of the fourth embodiment and the fifth embodiment, and the ONU responds to the OLT request in the manner of the fourth embodiment and the fifth embodiment (where the ONU response does not use the ADD of the uplink frame). i or bit4). The process of the ONU requesting the PLOAM message processing capability of the OLT is described below. When the OLT sends the SN_Request to the ONU in the registration activation state, and the ONU in the registration activation state sends its own sequence number information to the OLT, the ONU requests the PLOAM message processing capability of the OLT through the IND i or the bit 4 of the uplink frame. When the value of IND i or bit 4 is 0, it indicates that the OLT does not need to send its supported PLOAM message processing capability; when the value of bit 4 of the IND field is 1, it indicates that the OLT needs to send its supported PLOAM message processing capability. When the OLT receives the sequence number information of the ONU and the value of bit 4 of the IND field of the uplink frame is 1, when the OLT sends a ranging request to the ONU, the OLT adopts the allocation structure of the downlink frame PCBd domain proposed by Embodiment 1 (Allocation). In the Structure, the reserved field bit 1-0 of Flags sends its own PLOAM message processing capability to the ONU; the OLT can also pass the IDENT i or reserved bits of the downstream frame. The bit 31 transmits its own PLOAM message processing capability; the OLT can also transmit its own PLOAM message processing capability through the bit 9-8 of the PLEND field of the downlink frame; the OLT can also respond to the ONU request by adding a new PLOAM message as shown in Table 7; It is also possible to use the downlink frame or other reserved fields of the PLOAM message to send the ONU its own supported PLOAM message processing capability. If the ITU standard organization plans to increase the number of PLOAM message bytes of the PON system, the OLT can transmit its own supported PLOAM message processing capability through the added bytes in the PLOAM message, and the OLT receives the IND of the upstream frame while the ONU is transmitting the sequence number information. When the value of bit4 of the domain is 1, when the OLT sends a PLOAM message containing the ranging time (the message name is Ranging Time) to the ONU, a byte is added in front of the last byte of the message, and the changed Ranging_Time message is sent. The format is as shown in Table 9. The added byte is the 13th byte, which is used to transmit the maximum number of PLOAM messages allowed to be sent by the ONU in an uplink burst slot. Table 9 Ranging Time message format
OLT也可以在下行帧中增加一个 i或传递自身的 PLOAM消息处理能力。 利用本实施例的方法, OLT和 ONU也可以十办商 GPON系统上行帧的突 发模式开销 ( Burst Mode Overhead )中各个参数,例如保护时间( Guard time ), 前导 ( Preamble ) 和定界 ( Delimiter ); OLT和 ONU也可以协商最大上行带 宽分配个数等。
实施例七 The OLT can also add an i or pass its own PLOAM message processing capability to the downstream frame. With the method of the embodiment, the OLT and the ONU can also perform various parameters in the burst mode overhead (Burst Mode Overhead) of the uplink frame of the GPON system, such as guard time, preamble and delimiter. ); OLT and ONU can also negotiate the maximum number of uplink bandwidth allocations. Example 7
GPON系统中, OLT给两个 ONU分别分配的上行带宽之间存在一个保 护时间 (Guard time ), ONU的上行帧的物理层开销 ( PLOu ) 部分包含前导 域( Preamble )和定界域( Delimiter )等。 OLT和 ONU协商上述参数的具体 过程如下: In the GPON system, there is a guard time between the uplink bandwidth allocated by the OLT to the two ONUs. The physical layer overhead (PLOu) part of the uplink frame of the ONU includes the preamble (Preamble) and the delimiter domain (Delimiter). Wait. The specific process of negotiating the above parameters between the OLT and the ONU is as follows:
OLT给所有 ONU发送上行开销 ( Upstream Overhead ) PLOAM消息即 Upstream overhead parameters, 上述消息中包含前导码比特数和定界符比特 数等信息, 处于注册激活状态的 ONU收到上述消息后, 根据这些网络参数 进行相关配置, 处于注册激活状态的 ONU发送自身的序列号信息给 OLT时, ONU通过 包含 Serial Number信息的 PLOAM消息(消息名为 Serial Number ONU )中 的第十二字节的 bit3-2和一个新增的字节传递给 OLT下述信息: 当前 ONU 能够支持的最短 Guard time字节数。上述 Serial Number信息的第十二字节的 bit3作为上述新增字节的最高位, 并且上述 Serial Number信息的第十二字节 的 bit2作为上述新增字节的次高位,ONU利用上述十个比特传递自身支持的 最小 Guard time的字节数。 OLT接收到上述信息后, 选择一个合适的 Guard time值通过 Upstream—overhead parameters消息发送给所有的 ONU, ONU接 4欠到 Upstream overhead parameters 消息后, 才艮据这些网络参数进行 目关配 置。 OLT和 ONU矛】用上述的 Upstream overhead parameters和上述的 SerialThe OLT sends Upstream Overhead to all ONUs. The PLOAM message is Upstream overhead parameters. The above message contains information such as the number of preamble bits and the number of delimiter bits. After the ONUs in the registration activation state receive the above messages, they are based on these networks. The parameter is related to the configuration. When the ONU in the registration activation state sends its own serial number information to the OLT, the ONU passes the bit 3-2 of the twelfth byte in the PLOAM message (the message name is Serial Number ONU) containing the Serial Number information. A new byte is passed to the OLT with the following information: The minimum number of Guard time bytes that the current ONU can support. The bit 3 of the twelfth byte of the Serial Number information is the highest bit of the new byte, and the bit 2 of the twelfth byte of the Serial Number information is used as the second highest bit of the new byte, and the ONU uses the ten The number of bytes of the minimum Guard time supported by the bit pass. After receiving the above information, the OLT selects an appropriate Guard time value and sends it to all ONUs through the Upstream_overhead parameters message. After the ONU receives the Upstream overhead parameters message, it performs the configuration according to these network parameters. OLT and ONU spear] use the above Upstream overhead parameters and the above Serial
Number消息完成了 Guard time、 Preamble和 Delimiter字节数的协商。 本实施例给出了 OLT通过 Upstream overhead parameters消息给 ONU传 递自身支持的 Preamble和 Delimiter字节数, OLT也可以在下行帧中增加一 个 i或传递自身支持的 Preamble 字和 Delimiter 节数; OLT 也可以在某个 PLOAM消息中利用部分字节传递自身支持的 Preamble和 Delimiter字节数; OLT也可以增加一个新的 PLOAM消息传递自身支持的 Preamble和 Delimiter 字节数。本实施给出了 ONU通过 Serial_Number_ONU消息最低字节的 bit3-2 和一个新增的字节传递自身能够支持的最短 Guard time字节数, ONU也可以 在上行帧中增加一个域传递自身能够支持的最短 Guard time字节数; ONU也 可以在某个 PLOAM消息中增加字节传递自身能够支持的最短 Guard time字 节数; ONU 也可以增加一个新的 PLOAM 消息传递自身能够支持的最短
Guard time字节数。 本实施例给出了一种 OLT 和 ONU 主动给对方发送消息完成了 Guard time. Preamble和 Delimiter字节数的十办商, OLT和 ONU也可以互 目请求对 方支持的 Guard time. Preamble和 Delimiter字节数, 然后 OLT和 ONU回答 对方的请求。 本实施例中 OLT和 ONU协商了彼此支持的 Guard time. Preamble和 Delimiter字节数, 也可以利用本实例的方法十办商 Preamble和 Delimiter的内 容。 实施例八 OLT与 ONU协商选择一个合适的最大上行带宽分配个数的方法如下: The Number message completes the negotiation of the Guard time, Preamble, and Delimiter bytes. In this embodiment, the OLT transmits the number of Preamble and Delimiter bytes supported by the OLT to the ONU through the Upstream overhead parameters message. The OLT may also add an i in the downlink frame or pass the Preamble word and Delimiter number supported by the OLT. The OLT may also The partial bytes are used to pass the number of Preamble and Delimiter bytes supported by the PLOAM message. The OLT can also add a new PLOAM message to support the number of Preamble and Delimiter bytes supported by itself. This implementation shows the minimum Guard time byte that the ONU can support through the lowest byte of the Serial_Number_ONU message and the new Byte time. The ONU can also add a domain in the upstream frame to support itself. The minimum number of Guard time bytes; the ONU can also increase the minimum number of Guard time bytes that a byte pass can support in a PLOAM message; the ONU can also add a new PLOAM message that itself can support the shortest Guard time bytes. In this embodiment, an OLT and an ONU actively send messages to each other to complete the Guard time. Preamble and Delimiter bytes. The OLT and the ONU can also request the Guard time. Preamble and Delimiter words supported by the other party. The number of sections, then the OLT and ONU answer the other party's request. In this embodiment, the OLT and the ONU negotiate the number of Guard time. Preamble and Delimiter bytes supported by each other, and the content of the Preamble and Delimiter can also be used by the method of the present example. Embodiment 8 The method for the OLT to negotiate with the ONU to select an appropriate maximum uplink bandwidth allocation is as follows:
GPON系统中, 在 ONU注册激活过程中, OLT与 ONU协商 ONU支持 的最大上行带宽分配个数,即 OLT在一个下行帧内最多分配的分配结构的个 数, 然后 OLT存储协商结果, 在 OLT进行上行带宽分配时, 参照协商结果 执行, 即 OLT在一个下行帧内分配的分配结构的个数不能超过 ONU支持的 最大上行带宽分配个数。 具体过程如下所述。 当 OLT给处于注册激活状态的 ONU发送序列号询问消息, 处于注册激 活状态的 ONU发送自身的序列号信息给 OLT时, ONU通过在序列号信息后 面增加两个字节传递给 OLT 自身支持的最大上行带宽分配个数。OLT接收并 存储上述信息。 当 OLT下次发送上行带宽分配时, OLT在一个下行帧内分配 的分配结构的个数不能超过所有 OLT存储的上述信息的值。 本实施例给出了 ONU通过在序列号信息后面增加两个字节传递给 OLT 自身支持的最大上行带宽分配个数, ONU也可以在上行帧中增加一个域传 递自身支持的最大上行带宽分配个数; ONU也可以在某个 PLOAM消息中增 加字节传递自身支持的最大上行带宽分配个数; ONU 也可以增加一个新的 PLOAM消息传递自身支持的最大上行带宽分配个数。 本实施例给出了一种 ONU主动给 OLT发送消息完成 ONU支持最大上 行带宽分配个数的协商, 也可以釆用 OLT 请求然后 ONU 回复的方式协商 ONU支持最大上行带宽分配个数。 本实施例给出了 OLT和 ONU在 ONU的注册激活阶段协商 ONU能够支
持的最大上行带宽分配个数,也可以釆用在 ONU处于其他阶段协商 ONU能 够支持的最大上行带宽分配个数。 本实施例给出了 OLT和 ONU协商 ONU能够支持的最大上行带宽分配 个数, 也可以釆用本实施例的方法协商 ONU支持的带宽分配方面的其他参 数。 根据本发明的实施例, 提供了一种无源光网络系统和网元。 图 2是才艮据本发明实施例的无源光网络系统的示意图。 如图 2所示, 该无源光网络系统包括: OLT和 ONU, 其中, In the GPON system, during the ONU registration activation process, the OLT negotiates with the ONU the maximum number of uplink bandwidths supported by the ONU, that is, the maximum number of allocation structures allocated by the OLT in one downlink frame, and then the OLT stores the negotiation result and performs the OLT at the OLT. When the uplink bandwidth is allocated, the negotiation result is performed, that is, the number of allocation structures allocated by the OLT in one downlink frame cannot exceed the maximum uplink bandwidth allocation supported by the ONU. The specific process is as follows. When the OLT sends a serial number query message to the ONU in the registered activation state, and the ONU in the registered activation state sends its own serial number information to the OLT, the ONU transmits the maximum number of bytes to the OLT itself by adding two bytes after the serial number information. The number of upstream bandwidth allocations. The OLT receives and stores the above information. When the OLT sends the uplink bandwidth allocation next time, the number of allocation structures allocated by the OLT in one downlink frame cannot exceed the value of the above information stored by all OLTs. In this embodiment, the ONU allocates the maximum uplink bandwidth allocated by the OLT to the OLT by adding two bytes after the sequence number information, and the ONU can also add a domain to support the maximum uplink bandwidth allocation supported by the domain. The ONU can also increase the maximum number of uplink bandwidth allocations supported by the byte delivery in a PLOAM message; the ONU can also increase the maximum number of uplink bandwidth allocations supported by a new PLOAM message. In this embodiment, an ONU actively sends a message to the OLT to complete the negotiation of the maximum uplink bandwidth allocation by the ONU, and the ONU supports the maximum uplink bandwidth allocation by using the OLT request and then the ONU reply. In this embodiment, the OLT and the ONU negotiate that the ONU can support the ONU during the registration activation phase. The maximum number of uplink bandwidth allocations can also be used to negotiate the maximum number of upstream bandwidth allocations that the ONU can support at other stages of the ONU. In this embodiment, the OLT and the ONU negotiate the maximum number of uplink bandwidths that the ONU can support, and the other parameters in the bandwidth allocation supported by the ONU can also be negotiated by the method in this embodiment. According to an embodiment of the present invention, a passive optical network system and a network element are provided. 2 is a schematic diagram of a passive optical network system in accordance with an embodiment of the present invention. As shown in FIG. 2, the passive optical network system includes: an OLT and an ONU, where
OLT和 ONU相互发送自身支持的工作能力, 即, OLT将自身支持的工 作能力发送给 ONU , 以及 ONU将自身支持的工作能力发送给 OLT。 The OLT and the ONU send each other's working capabilities, that is, the OLT sends its own supported working capabilities to the ONU, and the ONU sends its own supported working capabilities to the OLT.
OLT和 ONU根据接收到的对方支持的工作能力来配置自身的工作参数, 即, OLT根据接收到的 ONU支持的工作能力来配置自身的工作参数, ONU 根据接收到的 OLT支持的工作能力来配置自身的工作参数。 上述系统的工作能力可以包括以下中至少之一: 处理 PLOAM消息的能 力; 上行帧的突发模式开销; 最大上行带宽分配个数。 上述工作参数可以包括以下中至少之一: 发送的 PLOAM消息的个数; 上行帧的突发模式开销; 最大上行带宽分配个数。 图 3是才艮据本发明实施例的无源光网络网元的示意图。 如图 3所示, 该无源光网络网元包括: 发送模块 201、 接收模块 203和 配置模块 205。 具体地, 发送模块 201用于发送自身支持的工作能力; 接收模块 203用 于其他网元支持的工作能力; 配置模块 205用于根据接收到的其他网元支持 的工作能力来配置自身的参数。 上述的发送模块 201 可以利用以下方式之一来发送自身支持的工作能 力:新建一个 PLOAM消息,该 PLOAM消息用于发送网元支持的工作能力; 增加现有消息的字节; 利用现有消息、上行帧和下行帧中部分字节的保留域。
上述的发送模块 201具体用于发送以下中之一: 处理 PLOAM消息的能 力; 上行帧的突发模式开销; 最大上行带宽分配个数。 上述的工作参数包括以下中至少之一: 发送的 PLOAM消息的个数; 上 行帧的突发模式开销; 最大上行带宽分配个数。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
The OLT and the ONU configure their own working parameters according to the received working capabilities supported by the other party. That is, the OLT configures its working parameters according to the working capabilities supported by the received ONUs. The ONUs are configured according to the working capabilities supported by the received OLT. Its own working parameters. The working capabilities of the above system may include at least one of the following: the ability to process PLOAM messages; the burst mode overhead of the upstream frame; and the maximum number of upstream bandwidth allocations. The foregoing working parameters may include at least one of the following: a number of sent PLOAM messages; a burst mode overhead of an uplink frame; a maximum uplink bandwidth allocation number. 3 is a schematic diagram of a passive optical network element according to an embodiment of the present invention. As shown in FIG. 3, the passive optical network network element includes: a sending module 201, a receiving module 203, and a configuration module 205. Specifically, the sending module 201 is configured to send the working capability supported by the network; the receiving module 203 is configured to work by other network elements; and the configuration module 205 is configured to configure its own parameters according to the received working capabilities supported by other network elements. The foregoing sending module 201 can use one of the following methods to send the working capability supported by the user: create a PLOAM message, which is used to send the working capability supported by the network element; increase the bytes of the existing message; Reserved field of partial bytes in the upstream and downstream frames. The foregoing sending module 201 is specifically configured to send one of the following: a capability of processing a PLOAM message; a burst mode overhead of an uplink frame; and a maximum uplink bandwidth allocation number. The above working parameters include at least one of the following: the number of transmitted PLOAM messages; the burst mode overhead of the uplink frame; and the maximum uplink bandwidth allocation number. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
Claims
权 利 要 求 书 一种无源光网络中处理的方法, 其特征在于, 包括: Claims A method of processing in a passive optical network, characterized in that it comprises:
光网络终端 OLT将自身支持的工作能力发送给光网络单元 ONU, 所述 ONU根据接收到的所述 OLT支持的工作能力来配置自身的工作参 数; The optical network terminal OLT sends its own working capability to the optical network unit ONU, and the ONU configures its working parameters according to the received working capability supported by the OLT;
所述 ONU将自身支持的工作能力发送给所述 OLT, 所述 OLT根据 接收到的所述 ONU支持的工作能力来配置自身的工作参数。 根据权利要求 1所述的方法, 其特征在于, The ONU sends the working capability supported by the ONU to the OLT, and the OLT configures its own working parameters according to the received working capability supported by the ONU. The method of claim 1 wherein
在所述 OLT将自身支持的工作能力发送给所述 ONU之前, 所述方 法还包括: Before the OLT sends the working capability supported by the OLT to the ONU, the method further includes:
所述 ONU请求所述 OLT发送所述 OLT支持的工作能力; 在所述 ONU将自身支持的工作能力发送给所述 OLT之前, 所述方 法还包括: The ONU requests the OLT to send the working capability supported by the OLT; before the ONU sends the working capability supported by the ONU to the OLT, the method further includes:
所述 OLT请求所述 ONU发送所述 ONU支持的工作能力。 根据权利要求 2所述的方法, 其特征在于, The OLT requests the ONU to send the working capability supported by the ONU. The method of claim 2, wherein
所述 ONU通过以下方式之一请求所述 OLT支持的工作能力: 新建一个消息, 所述消息用于请求所述 OLT支持的工作能力; 增加现有消息的字节; The ONU requests the working capability supported by the OLT in one of the following ways: a new message is created, the message is used to request the working capability supported by the OLT; and the bytes of the existing message are added;
利用现有消息或上行帧中部分字节的保留域; Utilize an existing message or a reserved field of a partial byte in an upstream frame;
所述 OLT通过以下方式之一请求所述 ONU支持的工作能力: The OLT requests the working capability supported by the ONU in one of the following ways:
新建一个消息, 所述消息用于请求所述 ONU支持的工作能力; 增加现有消息的字节; Create a new message, the message is used to request the working capability supported by the ONU; increase the bytes of the existing message;
利用现有消息或下行帧中部分字节的保留域。
Use existing messages or reserved fields of some bytes in the downstream frame.
4. 根据权利要求 1所述的方法, 其特征在于, 4. The method of claim 1 wherein
所述 OLT将自身支持的工作能力发送给所述 ONU包括通过以下方 式之一来发送: The sending, by the OLT, the working capability supported by the OLT to the ONU includes sending by one of the following methods:
新建一个消息, 所述消息用于发送 OLT支持的工作能力; 增加现有消息的字节; Create a new message, which is used to send the working capability supported by the OLT; increase the bytes of the existing message;
利用现有消息或下行帧中部分字节的保留域; 所述 ONU将自身支持的工作能力发送给所述 OLT包括通过以下方 式之一来发送: Utilizing an existing message or a reserved field of a partial byte in a downlink frame; the ONU transmitting its own supported working capability to the OLT includes sending by one of the following methods:
新建一个消息, 所述消息用于发送 ONU支持的工作能力; 增加现有消息的字节; Create a new message, which is used to send the working capability supported by the ONU; increase the bytes of the existing message;
利用现有消息或上行帧中部分字节的保留域。 Use existing messages or reserved fields of partial bytes in the upstream frame.
5. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述工作能力 包括以下中之一: The method according to any one of claims 1 to 4, characterized in that the working capability comprises one of the following:
处理物理层操作管理维护消息的能力; The ability to handle physical layer operations management and maintenance messages;
上行帧的突发模式开销; Burst mode overhead of the upstream frame;
最大上行带宽分配个数。 The maximum number of upstream bandwidth allocations.
6. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述工作参数 包括以下中之一: The method according to any one of claims 1 to 4, characterized in that the operating parameter comprises one of the following:
发送的物理层操作管理维护消息的个数; 上行帧的突发模式开销; The number of physical layer operations management and maintenance messages sent; the burst mode overhead of the uplink frame;
最大上行带宽分配个数。 The maximum number of upstream bandwidth allocations.
7. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述现有消息 包括: The method according to any one of claims 1 to 4, wherein the existing message comprises:
物理层操作管理维护消息。 The physical layer operates to manage maintenance messages.
8. —种无源光网络系统, 包括光网络终端 OLT和光网络单元 ONU, 其特 征在于,所述 OLT和所述 ONU相互发送自身支持的工作能力,所述 OLT 和所述 ONU根据接收到的对方支持的工作能力来配置自身的工作参数。
8. A passive optical network system, comprising an optical network terminal OLT and an optical network unit ONU, wherein the OLT and the ONU mutually transmit working capabilities supported by the OLT and the ONU according to the received The working ability supported by the other party is configured to configure its own working parameters.
9. 根据权利要求 8所述的系统, 其特征在于, 所述工作能力包括以下中至 少之一: 9. The system of claim 8, wherein the working capability comprises at least one of:
处理物理层操作管理维护消息的能力; The ability to handle physical layer operations management and maintenance messages;
上行帧的突发模式开销; Burst mode overhead of the upstream frame;
最大上行带宽分配个数。 The maximum number of upstream bandwidth allocations.
10. 根据权利要求 8所述的系统, 其特征在于, 所述工作参数包括以下中至 少之一: 10. The system of claim 8, wherein the operating parameters comprise at least one of:
发送的物理层操作管理维护消息的个数; The number of physical layer operations management maintenance messages sent;
上行帧的突发模式开销; Burst mode overhead of the upstream frame;
最大上行带宽分配个数。 The maximum number of upstream bandwidth allocations.
11. 一种无源光网络网元, 其特征在于, 包括: A passive optical network network element, comprising:
发送模块, 用于发送自身支持的工作能力; a sending module, configured to send a working capability supported by itself;
接收模块, 用于接收其他无源光网络网元支持的工作能力; 配置模块, 用于根据接收到的所述其他无源光网络网元支持的工作 能力来配置自身的参数。 The receiving module is configured to receive the working capability supported by the network element of the other passive optical network, and the configuration module is configured to configure the parameter according to the working capability supported by the network element of the other passive optical network.
12. 根据权利要求 11所述的网元, 其特征在于, 所述发送模块利用以下方式 之一来发送自身支持的工作能力: The network element according to claim 11, wherein the sending module sends the working capability supported by itself by using one of the following methods:
新建一个消息, 所述消息用于发送网元支持的工作能力; 增加现有消息的字节; Create a new message, which is used to send the working capability supported by the network element; increase the bytes of the existing message;
利用现有消息、 上行帧和下行帧中部分字节的保留域。 A reserved field of partial bytes in existing messages, upstream frames, and downstream frames.
13. 根据权利要求 11所述的网元, 其特征在于, 所述发送模块具体用于发送 以下中之一: The network element according to claim 11, wherein the sending module is specifically configured to send one of the following:
处理物理层操作管理维护消息的能力; The ability to handle physical layer operations management and maintenance messages;
上行帧的突发模式开销; Burst mode overhead of the upstream frame;
最大上行带宽分配个数。 The maximum number of upstream bandwidth allocations.
14. 根据权利要求 11所述的网元, 其特征在于, 所述工作参数包括以下中至 少之一: The network element according to claim 11, wherein the operating parameter comprises at least one of the following:
发送的物理层操作管理维护消息的个数; The number of physical layer operations management maintenance messages sent;
上行帧的突发模式开销; Burst mode overhead of the upstream frame;
最大上行带宽分配个数。
The maximum number of upstream bandwidth allocations.
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