CN102388566A - Method, device and system for converting identifier of terminal device - Google Patents

Method, device and system for converting identifier of terminal device Download PDF

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CN102388566A
CN102388566A CN2011800017793A CN201180001779A CN102388566A CN 102388566 A CN102388566 A CN 102388566A CN 2011800017793 A CN2011800017793 A CN 2011800017793A CN 201180001779 A CN201180001779 A CN 201180001779A CN 102388566 A CN102388566 A CN 102388566A
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identifier
upstream data
replacement
expansion
data
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CN102388566B (en
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叶飞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2596—Translation of addresses of the same type other than IP, e.g. translation from MAC to MAC addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects

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  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention discloses a method, device and system for converting identifier of a terminal device. The method includes the steps of receiving up data sent by the terminal device of which the control portion includes a device identifier for indicating the terminal device; obtaining an extended device identifier corresponding to the up data according to the bandwidth authorization message corresponding to the up data; ensuring that the device identifier contained by the control portion matches with the extended device identifier; and replacing the device identifier contained by the control portion of the up data with the extended device identifier. Replacement of the terminal device identifier ensures that media access control layer supports a large branching ratio passive optical network system without modifying optical network units or terminals, thereby improving capacity of the system and reducing cost of the system.

Description

The methods, devices and systems of the identifier of conversion terminal equipment
Technical field
The present invention relates to optical communication field, relate in particular to the methods, devices and systems of the identifier of conversion terminal equipment in the optical communication field.
Background technology
Gigabit passive optical network (Gigabit Passive Optical Network; Abbreviate " GPON " as) be a kind of point-to-multipoint (Point To Multi Point; Abbreviate " P2MP " as) the Optical Access Network network; It is by the optical line terminal (Optical Line Terminal abbreviates " OLT " as) of office's side, the optical network unit (Optical Network Unit abbreviates " ONU " as) or ONT Optical Network Terminal ONT (the Optical Network Terminal of user side; Abbreviate " ONT " as) and Optical Distribution Network (Optical Distribution Network abbreviates " ODN " as) composition.EPON (Passive Optical Network abbreviates " PON " as) system has mainly adopted the topological structure of tree type.
In the PON system, OLT both provided the network side interface, was connected with one or more ODN through the PON side interface again.ODN adopts Passive Optical Components, is used to connect OLT equipment and ONU equipment/ONT equipment, be used to distribute or multiplexing OLT and ONU between data-signal.ONU both provided user side interface, linked to each other with ODN through the PON side interface again.If ONU directly provides User Port Function, like ethernet user's port of personal computer (Personal Computer abbreviates " PC " as) online usefulness, then this ONU can be called ONT.If there is not specified otherwise, the ONU that hereinafter mentions will unite and refer to ONU or ONT.
In the GPON system; From OLT to ONU, be called descending, the wavelength of descending employing 1490nm, by OLT according to time division multiplexing (Time Division Multiplexing; Abbreviating " TDM " as) mode is broadcast to all ONU with downstream data flow, and each ONU receives only the data that have self identification.Otherwise, be up from ONU to OLT, the wavelength of up employing 1310nm.Because each ONU shares ODN and OLT equipment; For the upstream data that guarantees each ONU does not clash; The GPON/EPON system adopts time division multiple access (Time Division Multiple Access; Abbreviate " TDMA " as) mode, promptly distribute time slot for each ONU through OLT, each ONU must send data in strict accordance with the OLT distributed time slot.
The GPON agreement is by International Telecommunications Union's telecommunication standards group (ITU Telecommunication Standardization Sector; Abbreviate " ITU-T " as) G.984 series standard definition; Medium access control (the MediaAccess Control of GPON wherein; Abbreviate " MAC " as) agreement maximum ONU-ID number, ALLOC-ID number, GEM (the GPON method for packing that can support; Gigabit-capable Passive Optical Network Encapsulation Method abbreviates " GEM " as)-the PORT-ID number is respectively 256,4096,4096.
In order to increase the capacity of PON, industry proposes on TDM-PON system-based such as GPON, utilizes wavelength division multiplexing (Wavelength Division Multiplexing; Abbreviate " WDM " as) and multistage light splitting technology; TDM PON is evolved to the mixing PON (Hybrid PON is called for short " HPON ") that supports big branching ratio, but in this process; Need the investment of the existing TDM-PON system of protection as far as possible, do not change existing ODN or ONU as far as possible.Yet; Because ONU-ID, ALLOC-ID, GEM-PORT-ID that the mac-layer protocol of existing TDM-PON such as GPON system can be supported are very limited; As can only support 256 ONU-ID (comprising broadcasting ID) at most, become of the restriction of big branching ratio HPON technology at the more ONU of MAC layer support.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of changing the identifier of terminal equipment, can realize the support of media access control layer to big branching ratio passive optical network, and can not change optical network unit or terminal.
On the one hand, a kind of method of changing the identifier of terminal equipment is provided, this method comprises: the upstream data that receiving terminal apparatus sends, and the control section of this upstream data comprises the device identifier of indicating this terminal equipment; According to the bandwidth authorizing information corresponding, obtain and the corresponding expansion equipment identifier of this upstream data with this upstream data; Confirm that this device identifier and this expansion equipment identifier that the control section of this upstream data comprises are complementary; This device identifier that the control section of this upstream data is comprised replaces with this expansion equipment identifier.
On the other hand, a kind of device of changing the identifier of terminal equipment is provided also, this device comprises: receiving element, be used for the upstream data that receiving terminal apparatus sends, and the control section of this upstream data comprises the device identifier of indicating this terminal equipment; Acquiring unit is used for the basis bandwidth authorizing information corresponding with this upstream data, obtains and the corresponding expansion equipment identifier of this upstream data; Confirm the unit, this expansion equipment identifier that this device identifier that the control section of this upstream data that is used for confirming that this receiving element receives comprises and this acquiring unit obtain is complementary; The first replacement unit, this device identifier that the control section of this upstream data that is used for this receiving element is received comprises replaces with this expansion equipment identifier that this acquiring unit obtains.
On the other hand, a kind of passive optical network is provided also, has comprised: optical line terminal and a plurality of optical network unit, said optical line terminal is connected to said a plurality of optical network unit through Optical Distribution Network; Wherein, said optical network unit is used for sending upstream data to said optical network unit; Said optical line terminal is used to receive the upstream data that carries the device identifier of indicating said optical network unit that said optical network unit sends; According to the bandwidth authorizing information corresponding with said upstream data; Obtain and the corresponding expansion equipment identifier of said upstream data; And when the device identifier that carries of confirming said upstream data and said expansion equipment identifier were complementary, the device identifier that said upstream data is carried replaced with said expansion equipment identifier.
Based on technique scheme; According to the methods, devices and systems of the identifier of the conversion terminal equipment of the embodiment of the invention, replace through identifier terminal equipment, can realize the support of media access control layer to big branching ratio passive optical network; And can not change optical network unit or terminal; Compatible with the existing passive optical network standards, thus the capacity of system can be improved, and reduce the cost of system.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in the embodiment of the invention below; Obviously, below described accompanying drawing only be some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the network architecture sketch map of embodiment of the invention ODSM-PON system.
Fig. 2 is the indicative flowchart according to the method for the identifier of the conversion terminal equipment of the embodiment of the invention.
Fig. 3 is the schematic diagram according to the extended identifier of the embodiment of the invention.
Fig. 4 is the indicative flowchart of method of changing the identifier of terminal equipment according to another embodiment of the present invention.
Fig. 5 is the indicative flowchart according to the method for the identifier of the terminal equipment in the conversion HPON system of the embodiment of the invention.
Fig. 6 is the indicative flowchart of method of the identifier of conversion terminal equipment according to yet another embodiment of the invention.
Fig. 7 is the schematic block diagram according to the device of the identifier of the conversion terminal equipment of the embodiment of the invention.
Fig. 8 is the schematic block diagram according to the acquiring unit of the embodiment of the invention.
Fig. 9 is the schematic block diagram of device of changing the identifier of terminal equipment according to another embodiment of the present invention.
Figure 10 is the schematic block diagram according to the second replacement unit of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work should belong to the scope that the present invention protects.
The technical scheme that should be appreciated that the embodiment of the invention can be applied to various optical communication systems, for example passive optical networks such as GPON, EPON, 10G-GPON, 10G-EPON, ODSM-PON, TWDM-PON.For convenience, following embodiment will be example with the HPON system based on GPON, and be that example describes with terminal equipment that comprises ONU and ONT and the network equipment that comprises OLT, but the embodiment of the invention is not limited to this.
For example, in one embodiment, the HPON system adopts the ODSM-PON system of dynamic spectrum management (Optical Dynamic Spectrum Management abbreviates " ODSM " as) technology.See also Fig. 1, in the ODSM-PON system, ODN can adopt the two-stage beam split, and the first order is the mixed light multiplexer, and the second level is the passive optical splitters part.Explain with up, the descending situation of four pairs of wavelength that respectively adopts below.From OLT to ONU, be called descending, four wavelength of descending employing, and coexist with the WDM mode; ONU is divided into four groups according to downstream wavelength, and on each downstream wavelength, OLT is broadcast to all corresponding ONU that receive wavelength with the TDM mode with downstream data flow, but each ONU receives only the data that have self identification.Otherwise, be up from ONU to OLT, OLT adopts adjustable demodulation multiplexer (Demultiplexer abbreviates " DEMUX " as) that the upgoing wave dash is divided into four passages, and each passage is received by a receiver, and the ONU in the different data feedback channels coexists with the WDM mode.For the upward signal that guarantees each ONU in the same data feedback channel does not clash; Each ONU adopts the TDMA mode in this data feedback channel; Be each ONU distribution time slot in the passage through OLT promptly, each ONU must send data in strict accordance with the OLT distributed time slot.
On down direction, after being coupled through multiplexer (Multiplexer abbreviates " MUX " as) and WDM device, the continuous signal light of four transmitter Tx1 of OLT～Tx4 emission outputs to the trunk optical fiber of ODN; After the trunk optical fiber transmission, arrive mixing arrangement (Hybrid-Box); In Hybrid-Box, behind WDM coupler partial wave, through erbium-doped fiber amplifier (Erbium-doped Optical Fiber Amplifier; Be called for short " EDFA ") amplify; After another MUX demultiplexing, be coupled into branch optical fiber then, be transferred to second level passive optical splitter, be transferred to each ONU through Drop cable again through branch optical fiber.On up direction; The burst luminous signal of ONU emission is coupled into branch optical fiber through Drop cable by second level passive optical splitter; Behind branch optical fiber, get into Hybrid-Box, through behind the WDM device partial wave by after the passive optical splitter coupling, through semiconductor optical amplifier (Semiconductor Optical Amplifier; Be called for short " SOA ") amplify after the WDM device gets into trunk optical fiber; After the trunk optical fiber transmission, arrive OLT, behind OLT inner WDM device and adjustable DEMUX, receive by four receiver RxA～RxD respectively.
If the ODSM-PON system realizes on the basis of GPON; According to existing hardware handles ability; Can accomplish uply, descending, can support 1024 even more ONU thus, promptly can accomplish the branching ratio of 1: 1024 (even higher) totally 16 to (even more) wavelength.
ODSM-PON adopts WDM and TDM technology, can keep existing ODN and ONU constant, when promoting bandwidth, can significantly reduce the deployment and the O&M cost of PON system, and the protection existing investment is one of technique direction of existing PON evolution.Of course it is to be understood that the scheme that the embodiment of the invention provides can also be applicable to other HPON systems based on TDM-PON (such as EPON or GPON).
Fig. 2 shows the indicative flowchart according to the method 100 of the identifier of the conversion terminal equipment of the embodiment of the invention.As shown in Figure 2, this method 100 comprises:
S110, the upstream data that the local side apparatus receiving terminal apparatus sends, the control section of this upstream data comprises the device identifier of indicating this terminal equipment;
S120, the bandwidth authorizing information that the local side apparatus basis is corresponding with this upstream data is obtained and the corresponding expansion equipment identifier of this upstream data;
S130, local side apparatus confirm that this device identifier and this expansion equipment identifier that the control section of this upstream data comprises are complementary;
S140, local side apparatus replaces with this expansion equipment identifier with this device identifier that the control section of this upstream data comprises.
In specific embodiment, local side apparatus can be respectively optical line terminal OLT and optical network unit ONU with terminal equipment.OLT is when receiving the upstream data of ONU transmission; Can basis and this upstream data corresponding bandwidth authorization message; Obtain and the corresponding expansion equipment identifier of this upstream data; And when the device identifier that comprises at the control section of confirming this upstream data and this expansion equipment identifier were complementary, this device identifier that the control section of this upstream data is comprised replaced with this expansion equipment identifier.
Therefore, the method for the identifier of the conversion terminal equipment of the embodiment of the invention is replaced through the identifier to terminal equipment; Can support the terminal equipment of greater number; Being implemented in the support of media access control layer, and can not change ONU to big branching ratio passive optical network, compatible with the existing passive optical network standards; Thereby can improve the capacity of system, and reduce the cost of system.
Particularly; For the MAC layer that solves the PON system is supported excess ONU, transmission container (Transmission Container; Abbreviate " T-CONT " as), GPON method for packing port (Gigabit-capable Passive Optical Network Encapsulation Method Port; Abbreviate " GEM-PORT " as) and don't change ONU; The embodiment of the invention can adopt following scheme: come mark ONU, T-CONT, GEM-PORT respectively in OLT inside with the ONU-ID of expansion, the ALLOC-ID of expansion and the GEM-PORT-ID of expansion; And still come mark ONU, T-CONT, GEM-PORT respectively with original ONU-ID, ALLOC-ID and GEM-PORT-ID at ONU, in addition, OLT can shine upon (Bandwidth Map according to bandwidth when up reception; Be called for short " BWMAP ") carry out above-mentioned ID conversion with ONU packet map table, change and when descending transmission, carry out above-mentioned ID according to ONU packet map table.
Therefore, the technical scheme of the embodiment of the invention can keep ONU constant, and OLT and ONU interaction protocol flow process are constant; Frame structure between OLT and the ONU is constant, promptly the technical scheme of the embodiment of the invention can with existing PON operating such, can reuse existing ONU equipment as far as possible; Can make OLT realize support to big branching ratio PON system; And can make MAC layer degree of reusing height, thereby can also improve the capacity of system, and reduce the cost of system.
In embodiments of the present invention; MAC at OLT is inner; With the uniquely tagged of expansion equipment identifier NEW-ONU-ID as the ONU that is linked into the PON system; With the uniquely tagged of expansion transmission container identifier NEW-ALLOC-ID, with the uniquely tagged of ECP Extended Capabilities Port identifier NEW-PORT-ID as PON internal system GEM-PORT as PON internal system T-CONT.
Alternatively, this expansion equipment identifier NEW-ONU-ID comprises the down going channel identifier DS-PON-ID of indicating downlink passage, and the device identifier ONU-ID of indicating terminal equipment, and is unique at all ONU-ID of same down going channel; This expansion transmission container identifier NEW-ALLOC-ID comprises this transmission container identifier ALLOC-ID of this down going channel identifier DS-PON-ID and indication transmission container, and is unique at all ALLOC-ID of same down going channel; This ECP Extended Capabilities Port identifier NEW-PORT-ID comprises this port identifiers PORT-ID of this down going channel identifier DS-PON-ID and indication port, and is unique at all PORT-ID of same down going channel.
For example in HPON; Each ONU can only receive the information of a downstream wavelength, the corresponding a part of ONU of each downstream wavelength, such as; Belong to ONU subclass with a PON branch; Wherein, different PON branches corresponds respectively to different downstream wavelength passages, and can identify through different PON-ID.Therefore, as shown in Figure 3, expansion equipment identifier NEW-ONU-ID can comprise two parts, and a preceding part is down going channel identifier DS-PON-ID, and a back part is the device identifier ONU-ID that can only receive the ONU of the corresponding downstream wavelength of this DS-PON-ID.And the definition of latter part of device identifier ONU-ID and functional description meet the definition and the functional description of existing standard, equals 255 as broadcasting ID like ONU-ID.
In like manner, expansion transmission container identifier NEW-ALLOC-ID can comprise the interior transmission container identifier ALLOC-ID of ONU subclass that down going channel identifier DS-PON-ID and this DS-PON-ID are corresponding; ECP Extended Capabilities Port identifier NEW-PORT-ID can comprise the interior port identifiers PORT-ID of ONU subclass that down going channel identifier DS-PON-ID and this DS-PON-ID are corresponding.
DS-PON-ID is illustrated on all downstream wavelength to broadcast complete 1 (referring to binary system, like 0xFF).If the DS-PON-ID of NEW-ONU-ID partly is complete 1 (referring to binary system, like 0xFF), and ONU-ID partly is the ID of single ONU, then ONU identical with said ONU-ID on all downstream wavelength is carried out multicast; If ONU-ID partly is broadcasting ID, be complete 1 (referring to binary system) like 0xFF, then all ONU are broadcasted.If the DS-PON-ID of NEW-ONU-ID is single downstream wavelength ID, and ONU-ID partly is broadcasting ID, then all corresponding ONU of this DS-PON-ID is carried out multicast.NEW-ALLOC-ID and NEW-PORT-ID in like manner repeat no more.
In the ONU-ID assigning process, the ONU-ID that OLT only need guarantee to distribute in the ONU subclass of same downstream wavelength is unique, and in like manner ALLOC-ID, PORT-ID are unique in the ONU of same downstream wavelength subclass.This means that also the ONU-ID in the ONU subclass of different downstream wavelength might be identical.
Should understand; The embodiment of the invention is that example describes with Fig. 3; But the embodiment of the invention is not limited to this, and for example, the identifier after down going channel identifier DS-PON-ID and the expansion can have bigger length; For example; Identifier after the expansion can be used for indicating any of terminal equipment, transmission container and port, and is used to indicate down going channel, and the identifier after the expansion is not limited to the combination of down going channel identifier and device identifier, former transmission container identifier or port identifiers.
In S110, the upstream data that OLT device receiving terminal apparatus ONU sends, this upstream data portability has control information, and said control information can comprise the device identifier ONU-ID that indicates this terminal equipment.
In S120, alternatively, OLT can obtain the expansion transmission container identifier corresponding with this upstream data from bandwidth authorizing information; And, obtain and the corresponding expansion equipment identifier of this expansion transmission container identifier according to the terminal equipment packet map table that generates at the ONU registration phase.Wherein, this terminal equipment packet map table can comprise the corresponding relation between down going channel identifier, data feedback channel identifier, device identifier, transmission container identifier, port identifiers, expansion equipment identifier, expansion transmission container identifier and the ECP Extended Capabilities Port identifier.
Should be understood that in GPON bandwidth authorizing information is handed down to ONU with the form of bandwidth mapping graph (Bandwidth Map abbreviates " BWMAP " as), the form of BWMAP and field implication have definition in ITU-TG.984.3, repeat no more at this.
In the OLT of HPON, use expansion transmission container identifier to substitute the transmission container identifier among the BWMAP, the form of all the other fields and implication are still continued to use the definition of GPON standard; And in ONU, the form of BWMAP and implication are continued to use the definition of GPON standard fully.
For example, table 1 shows the ONU packet map table that ONU forms at registration phase.This ONU packet map table comprises the corresponding relation between down going channel identifier DS-PON-ID, data feedback channel identifier US-PON-ID, device identifier ONU-ID, transmission container identifier ALLOC-ID, port identifiers PORT-ID, expansion equipment identifier NEW-ONU-ID, expansion transmission container identifier NEW-ALLOC-ID and the ECP Extended Capabilities Port identifier NEW-PORT-ID.
Table 1
Figure BDA0000099678520000081
Should be understood that in HPON systems such as ODSM-PON, TWDM-PON uplink and downlink all possibly adopted a plurality of wavelength, the mapping relations with the uplink and downlink wavelength before ONU reaches the standard grade possibly be uncertain.Therefore; In embodiments of the present invention; The mapping relations of ONU-ID, ALLOC-ID, GEM-PORT-ID and OLT transmitter and receiver can be set up through following two kinds of methods, find automatically to solve ONU, the routing issue of range finding, upstream bandwidth distribution, up-downgoing flow.
A kind of method be OLT in the automatic discovery procedure of each downstream wavelength sequence starting ONU, same downstream wavelength ONU is a sub-set, OLT sets up the corresponding relation between the Receiver And Transmitter of ONU etc. and OLT when ONU responds.Another kind method be OLT in the automatic discovery procedure of all downstream wavelength parallel startings, in downstream message, add the numbering of OLT transmitter and in upstream message, send back to OLT, make OLT set up the corresponding relation between the Receiver And Transmitter of ONU and OLT.Form ONU packet map table as shown in table 1 thus.
In S130; Alternatively; When the device identifier ONU-ID that the device identifier ONU-ID that the OLT device comprises at the control section of this upstream data and this expansion equipment identifier NEW-ONU-ID comprise is identical, confirm that device identifier ONU-ID and this expansion equipment identifier NEW-ONU-ID that the control section of this upstream data comprises are complementary.
In S140, OLT replaces with this expansion equipment identifier NEW-ONU-ID with this device identifier ONU-ID that the control section of this upstream data comprises.
Therefore; The method of the identifier of the conversion terminal equipment of the embodiment of the invention is replaced through the identifier to terminal equipment, can realize the support of media access control layer to big branching ratio passive optical network; And can not change optical network unit or terminal; Compatible with the existing passive optical network standards, thus the capacity of system can be improved, and reduce the cost of system.
As previously mentioned; OLT device inside is carried out mark with identifier NEW-ONU-ID, NEW-ALLOC-ID and the NEW-PORT-ID after expanding to ONU, T-CONT, GEM-PORT, and ONU inside is carried out mark with former identifier ONU-ID, ALLOC-ID and PORT-ID to ONU, T-CONT, GEM-PORT.Therefore, can carry out the ID conversion, the message passing mechanism between OLT and the ONU can normally be carried out in OLT inside.
Therefore, as shown in Figure 4, can also comprise according to the method 100 of the identifier of the conversion terminal equipment of the embodiment of the invention:
S150, OLT device carried out the replacement of first identifier to the data division of this upstream data and handle before handling the data division of this upstream data;
S160, OLT device carry out the replacement of second identifier to the data division of this upstream data and handle after handling the data division of this upstream data.
In embodiments of the present invention, the replacement of this first identifier is handled and is comprised device identifier, transmission container identifier and port identifiers are replaced with corresponding expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier respectively; The replacement of this second identifier is handled and is comprised expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier are replaced with corresponding apparatus identifier, transmission container identifier and port identifiers respectively.
In embodiments of the present invention, this expansion equipment identifier comprises the down going channel identifier DS-PON-ID of indicating downlink passage, and this device identifier ONU-ID of indicating terminal equipment; This expansion transmission container identifier comprises this transmission container identifier ALLOC-ID of this down going channel identifier and indication transmission container; This ECP Extended Capabilities Port identifier comprises this port identifiers PORT-ID of this down going channel identifier and indication port.
To combine Fig. 5 below, be example with the HPON system based on GPON, and the processing according to the upstream data of the embodiment of the invention is described in detail.
As shown in Figure 5, comprise according to the method 200 of the identifier of the terminal equipment in the conversion HPON system of the embodiment of the invention:
S210; The OLT device carries up gigabit passive optical network GPON Transmission Convergence (the Gigabit-capable passive optical network Transmission Convergence of upstream data in reception; Abbreviate " GTC " as) frame; Physical layer operations management maintenance (Physical Layer Operations Administration and Maintenance in handling this up GTC frame; Abbreviate " PLOAM " as) before the data division of frame, the data division of this PLOAM frame is carried out the replacement of first identifier handle;
S220, OLT device carry out the replacement of second identifier to the data division of this PLOAM frame and handle after handling the data division of this PLOAM frame;
S230; Up gigabit passive optical network GPON method for packing (the Gigabit-capable passive optical network Encapsulation Method that comprises for this up GTC frame; Abbreviate " GEM " as) frame, the OLT device replaces with this ECP Extended Capabilities Port identifier with the port identifiers in this GEM frame;
S240; The OLT device is being handled optical network unit ONU management and control interface (the Optical Network Unit Management and Control Interface that this GEM frame carries; Abbreviate " OMCI " as) before the data division of message, this OMCI message is carried out the replacement of first identifier handle;
S250, OLT device carry out this second identifier replacement to this OMCI message and handle after handling this OMCI message.
Should be understood that above-mentioned each process sequence number size and do not mean that the priority of execution sequence, the execution sequence of each process should be definite with its function and internal logic, and should not constitute any qualification to the implementation process of the embodiment of the invention.
Particularly, at up direction, up GTC receiver module is according to the up GTC frame (shown in S110) of expansion transmission container identifier NEW-ALLOC-ID information, time started and the dwell time message pick-up ONU of BWMAP; Up GTC receiver module is searched among the BWMAP and the corresponding expansion equipment identifier NEW-ONU-ID (shown in S120) of this expansion transmission container identifier NEW-ALLOC-ID according to ONU packet map table; And the ONU-ID of expansion equipment identifier NEW-ONU-ID part and ONU-ID field in the up GTC frame compared; If be complementary then explain that the uplink of this ONU is (shown in the S130) that meets the allocated bandwidth mandate of OLT; Be for further processing, otherwise abandon, and produce alarm; Then, the device identifier ONU-ID of the up GTC receiver module up GTC frame header that will meet replaces to corresponding expansion equipment identifier NEW-ONU-ID (shown in S140).
For the control section of up GTC frame, up GTC receiver module replaces to corresponding NEW-ONU-ID with ONU-ID; The PLOAM frame that comprises for the data division of up GTC frame; Up GTC receiver module is given the PLOAM module with this PLOAM frame and is handled; Data (Data) part for the PLOAM frame; If relate to ONU-ID, ALLOC-ID or PORT-ID; Then the PLOAM module replaced to corresponding NEW-ONU-ID, NEW-ALLOC-ID or NEW-PORT-ID (shown in S210) before handling, and after handling, the PLOAM module converts thereof into corresponding ONU-ID, ALLOC-ID or PORT-ID (shown in S220) again.Should be understood that the control section for up PLOAM frame can replace to corresponding NEW-ONU-ID with ONU-ID by up GTC receiver module or PLOAM module.
DBRu (the Dynamic Bandwidth Report upstream that comprises for the data division of up GTC frame; Up dynamic bandwidth report) field; This DBRu field comprises DBA (Dynamic Bandwidth Allocation; Dynamic Bandwidth Allocation) and CRC (Cyclic Redundancy Check, CRC) field, this DBA field is the indication of customer flow demand information.Because DBRu field itself do not comprise id information, but corresponding with NEW-ALLOC-ID according to up sequential relationship, up GTC receiver module extracts NEW-ALLOC-ID and DBA and gives the processing of DBA computing module and get final product.
For the GEM frame that the data division of up GTC frame comprises, the PORT-ID of GEM frame header need replace to corresponding NEW-PORT-ID, handles (shown in S230) by giving up GEM receiver module after the up GTC receiver module conversion.Because common GEM load (payload) is irrelevant with the ID conversion, can handles the back according to prior art and forward from network side.
For the OMCI message is ONU management and control interface (Optical Network UnitManagement and Control Interface; Abbreviate " OMCI " as) message; Itself and common GEM load are distinguished through PORT-ID or NEW-PORT-ID, and the PORT-ID of OMCI message or NEW-PORT-ID are consistent with ONU-ID or NEW-ONU-ID.For the processing of OMCI message, its GEM frame head is treated at up GEM receiver module, and is mapped with NEW-ONU-ID or NEW-PORT-ID; Processing to the data division beyond the GEM frame header is realized by the OMCI module; Realize principle or standard definition according to OMCI; If relate to ONU-ID, ALLOC-ID or PORT-ID; Then the OMCI module replaced to corresponding NEW-ONU-ID, NEW-ALLOC-ID or NEW-PORT-ID (shown in S240) before handling, and after handling, the OMCI module converts thereof into corresponding ONU-ID, ALLOC-ID or PORT-ID (shown in S250) again.
Processing for DBA; Up GTC receiver module is transmitted to the DBA computing module with NEW-ALLOC-ID and DBA (extracting from DBRu); This module is calculated the amount of bandwidth of distributing to each T-CONT (with the NEW-ALLOC-ID mark) on each data feedback channel (with the US-PON-ID mark), and gives BWMAP generation module with result of calculation.The BWMAP generation module divides into groups the bandwidth calculation result of each T-CONT according to DS-PON-ID, then for each T-CONT distributes concrete time slot mandate, and by the time started ordering, generate the BWMAP that divides into groups with DS-PON-ID.The BWMAP modular converter replaces to corresponding ALLOC-ID with NEW-ALLOC-ID, is issued to the corresponding descending GTC sending module of DS-PON-ID then respectively.The BWMAP with the DS-PON-ID grouping that the BWMAP recombination module generates the BWMAP generation module divides into groups again according to the corresponding US-PON-ID of NEW-ALLOC-ID and by the time started ordering, is handed down to the corresponding up GTC receiver module of US-PON-ID then respectively.
Therefore; The method of the identifier of the conversion terminal equipment of the embodiment of the invention is replaced through the identifier to terminal equipment, can realize the support of media access control layer to big branching ratio passive optical network; And can not change optical network unit or terminal; Compatible with the existing passive optical network standards, thus the capacity of system can be improved, and reduce the cost of system.
Combine Fig. 2 to Fig. 5 in the preceding text, the processing of the data of up direction is described, will combine Fig. 6 below, detailed description is to the processing of the data of down direction.
As shown in Figure 6, comprise according to the method 300 of the identifier of the conversion terminal equipment of the embodiment of the invention:
S310; Expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier that the OLT device will send in the information of this terminal equipment replace with corresponding apparatus identifier, transmission container identifier and port identifiers respectively, and form downlink data;
S320, the OLT device sends this downlink data to this terminal equipment.
Particularly; Be that example describes still, for the OMCI message, as previously mentioned with the HPON system; The OMCI message of OMCI module output is to have converted ONU-ID, ALLOC-ID or PORT-ID to, and with the corresponding relation of NEW-ONU-ID or NEW-PORT-ID also be clear and definite.The OMCI module is forwarded to corresponding descending GEM sending module according to the corresponding DS-PON-ID of NEW-PORT-ID with the OMCI message and handles.Descending GEM sending module is packaged into the GEM frame with OMCI message and business datum, and NEW-PORT-ID is replaced to PORT-ID, gives descending GTC sending module (shown in S310) then.
For the processing of PLOAM message, as previously mentioned, the descending PLOAM message of PLOAM module output is to have converted ONU-ID, ALLOC-ID or PORT-ID to, and with the corresponding relation of NEW-ONU-ID also be clear and definite.The PLOAM module is forwarded to corresponding descending GTC sending module according to the corresponding DS-PON-ID of NEW-ONU-ID with the PLOAM message and handles (shown in S310).
Descending GTC sending module is dressed up descending GTC frame with the information sets such as descending PLOAM message, BWMAP and GEM frame after the ID conversion, and the transmitter through correspondence is handed down to ONU (shown in S320).
Therefore; The method of the identifier of the conversion terminal equipment of the embodiment of the invention is replaced through the identifier to terminal equipment, can realize the support of media access control layer to big branching ratio passive optical network; And can not change optical network unit or terminal; Compatible with the existing passive optical network standards, thus the capacity of system can be improved, and reduce the cost of system.
Combine Fig. 2 to Fig. 6 in the preceding text, describe the method according to the identifier of the conversion terminal equipment of the embodiment of the invention in detail, will combine Fig. 7 to Figure 10 below, detailed description is according to the device of the identifier of the conversion terminal equipment of the embodiment of the invention.
As shown in Figure 7, comprise according to the device 500 of the identifier of the conversion terminal equipment of the embodiment of the invention:
Receiving element 510 is used for the upstream data that receiving terminal apparatus sends, and the control section of this upstream data comprises the device identifier of indicating this terminal equipment;
Acquiring unit 520 is used for the basis bandwidth authorizing information corresponding with this upstream data, obtains and the corresponding expansion equipment identifier of this upstream data;
Confirm unit 530, this expansion equipment identifier that this device identifier that the control section of this upstream data that is used for confirming that this receiving element receives comprises and this acquiring unit obtain is complementary;
The first replacement unit 540, this device identifier that the control section of this upstream data that is used for this receiving element is received comprises replaces with this expansion equipment identifier that this acquiring unit obtains.
The device of the identifier of the conversion terminal equipment of the embodiment of the invention; Identifier through to terminal equipment is replaced; The support of media access control layer can be realized, and optical network unit or terminal can be do not changed big branching ratio passive optical network, compatible with the existing passive optical network standards; Thereby can improve the capacity of system, and reduce the cost of system.
In embodiments of the present invention, as shown in Figure 8 alternatively, this acquiring unit 520 comprises:
First obtains subelement 521, is used for obtaining the expansion transmission container identifier of this bandwidth authorizing information;
Second obtains subelement 522; Be used for according to terminal equipment packet map table in the registration phase generation; Obtain and corresponding this expansion equipment identifier of this expansion transmission container identifier, wherein this terminal equipment packet map table comprises the corresponding relation between down going channel identifier, data feedback channel identifier, device identifier, transmission container identifier, port identifiers, expansion equipment identifier, expansion transmission container identifier and the ECP Extended Capabilities Port identifier.
Alternatively, this bandwidth authorizing information is the bandwidth mapping graph.
In embodiments of the present invention; Alternatively; Should confirm that unit 530 also was used for: when the device identifier that the device identifier that comprises at the control section of this upstream data and this expansion equipment identifier comprise is identical, confirm that device identifier and this expansion equipment identifier that the control section of this upstream data comprises are complementary.
In embodiments of the present invention, as shown in Figure 9 alternatively, this device 500 also comprises the second replacement unit 550, and this second replacement unit 550 is used for:
Before handling the data division of this upstream data, the data division of this upstream data is carried out the replacement of first identifier handle;
After handling the data division of this upstream data, the data division of this upstream data is carried out the replacement of second identifier handle.
In embodiments of the present invention, alternatively, the replacement of this first identifier is handled and is comprised device identifier, transmission container identifier and port identifiers are replaced with corresponding expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier respectively; The replacement of this second identifier is handled and is comprised expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier are replaced with corresponding apparatus identifier, transmission container identifier and port identifiers respectively.
In embodiments of the present invention; Alternatively; This expansion equipment identifier comprises the down going channel identifier DS-PON-ID of indicating downlink passage; And this device identifier ONU-ID of indicating terminal equipment, this expansion transmission container identifier comprises this transmission container identifier ALLOC-ID of this down going channel identifier and indication transmission container, this ECP Extended Capabilities Port identifier comprises this port identifiers PORT-ID of this down going channel identifier and indication port.
In embodiments of the present invention, as shown in Figure 9 alternatively, this device 500 also comprises:
The 3rd replacement unit 560; The expansion equipment identifier, expansion transmission container identifier and the ECP Extended Capabilities Port identifier that are used for sending to the information of this terminal equipment replace with corresponding apparatus identifier, transmission container identifier and port identifiers respectively, and form downlink data;
Transmitting element 570 is used for sending this downlink data to this terminal equipment.
In embodiments of the present invention, shown in figure 10 alternatively, this second replacement unit 550 comprises:
The first replacement subelement 551; Be used for when this upstream data is up gigabit passive optical network GPON Transmission Convergence GTC frame; Before the data division of the physical layer operations management maintenance PLOAM frame in handling this up GTC frame, the data division of this PLOAM frame is carried out the replacement of first identifier handle;
The second replacement subelement 552 is used for after handling the data division of this PLOAM frame, the data division of this PLOAM frame is carried out the replacement of second identifier handle.
In embodiments of the present invention, shown in figure 10 alternatively, this second replacement unit 550 also comprises:
The 3rd replacement subelement 553, the port identifiers of the gigabit passive optical network GPON method for packing GEM frame that is used for this up GTC frame is comprised replaces with this ECP Extended Capabilities Port identifier.
In embodiments of the present invention, as shown in Figure 9 alternatively, this second replacement unit 550 also comprises:
The 4th replacement subelement 554 was used for before the optical network unit ONU management of handling this GEM frame carrying and control interface OMCI message, this OMCI message is carried out this first identifier replacement handle;
The 5th replacement subelement 555 is used for after handling this OMCI message, this OMCI message is carried out this second identifier replacement handle.
Device 500 according to the embodiment of the invention can be corresponding to the optical line terminal OLT device in the embodiment of the invention; And above-mentioned and other operation and/or the function of installing each module in 500 are respectively in order to realize the corresponding flow process of each method 100 to 300 among Fig. 2 to Fig. 6; For succinctly, repeat no more at this.
The device of the identifier of the conversion terminal equipment of the embodiment of the invention; Identifier through to terminal equipment is replaced; The support of media access control layer can be realized, and optical network unit or terminal can be do not changed big branching ratio passive optical network, compatible with the existing passive optical network standards; Thereby can improve the capacity of system, and reduce the cost of system.
Those of ordinary skills can recognize; The unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein; Can realize with electronic hardware, computer software or the combination of the two; For the interchangeability of hardware and software clearly is described, the composition and the step of each example described prevailingly according to function in above-mentioned explanation.These functions still are that software mode is carried out with hardware actually, depend on the application-specific and the design constraint of technical scheme.The professional and technical personnel can use distinct methods to realize described function to each certain applications, but this realization should not thought and exceeds scope of the present invention.
The those skilled in the art can be well understood to, for the convenience described with succinct, the concrete course of work of the system of foregoing description, device and unit can repeat no more at this with reference to the corresponding process among the preceding method embodiment.
In several embodiment that the application provided, should be understood that the system that is disclosed, apparatus and method can realize through other mode.For example, device embodiment described above only is schematically, for example; The division of said unit; Only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can combine or can be integrated into another system; Or some characteristics can ignore, or do not carry out.In addition, the coupling each other that shows or discuss or directly coupling or communication to connect can be that INDIRECT COUPLING or communication through some interfaces, device or unit connects, also can be electric, machinery or other form connect.
Said unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of embodiment of the invention scheme according to the needs selection some or all of unit wherein of reality.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be that two or more unit are integrated in the unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If said integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words; Perhaps all or part of of this technical scheme can come out with the embodied of software product, and this computer software product is stored in the storage medium, comprises that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out all or part of step of the said method of each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; Be merely embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field can expect the modification or the replacement of various equivalences easily in the technical scope that the present invention discloses, these modifications or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (23)

1. a method of changing the identifier of terminal equipment is characterized in that, comprising:
The upstream data that receiving terminal apparatus sends, the control section of said upstream data comprises the device identifier of indicating said terminal equipment;
According to the bandwidth authorizing information corresponding, obtain and the corresponding expansion equipment identifier of said upstream data with said upstream data;
Confirm that said device identifier and said expansion equipment identifier that the control section of said upstream data comprises are complementary;
The said device identifier that the control section of said upstream data is comprised replaces with said expansion equipment identifier.
2. method according to claim 1 is characterized in that, the bandwidth authorizing information that said basis is corresponding with said upstream data is obtained and the corresponding expansion equipment identifier of said upstream data, comprising:
Obtain the expansion transmission container identifier in the said bandwidth authorizing information;
According to the terminal equipment packet map table that generates at registration phase; Obtain and the corresponding said expansion equipment identifier of said expansion transmission container identifier, wherein said terminal equipment packet map table comprises the corresponding relation between down going channel identifier, data feedback channel identifier, device identifier, transmission container identifier, port identifiers, expansion equipment identifier, expansion transmission container identifier and the ECP Extended Capabilities Port identifier.
3. method according to claim 1 and 2 is characterized in that, said device identifier and said expansion equipment identifier that the control section of said definite said upstream data comprises are complementary, and comprising:
When the device identifier that the device identifier that comprises at the control section of said upstream data and said expansion equipment identifier comprise is identical, confirm that device identifier and said expansion equipment identifier that the control section of said upstream data comprises are complementary.
4. according to each described method in the claim 1 to 3, it is characterized in that said method also comprises:
Before handling the data division of said upstream data, the data division of said upstream data is carried out the replacement of first identifier handle;
After handling the data division of said upstream data, the data division of said upstream data is carried out the replacement of second identifier handle.
5. method according to claim 4; It is characterized in that the replacement of said first identifier is handled and comprised device identifier, transmission container identifier and port identifiers are replaced with corresponding expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier respectively;
The replacement of said second identifier is handled and is comprised expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier are replaced with corresponding apparatus identifier, transmission container identifier and port identifiers respectively.
6. method according to claim 5; It is characterized in that; Said expansion equipment identifier comprises the down going channel identifier DS-PON-ID of indicating downlink passage; And the said device identifier ONU-ID of indicating terminal equipment; Said expansion transmission container identifier comprises the said transmission container identifier ALLOC-ID of said down going channel identifier and indication transmission container, and said ECP Extended Capabilities Port identifier comprises the said port identifiers PORT-ID of said down going channel identifier and indication port.
7. method according to claim 5 is characterized in that, said data division to said upstream data carries out the replacement of first identifier to be handled, and the data division of said upstream data is carried out second identifier replacement processing, comprising:
When said upstream data is up gigabit passive optical network GPON Transmission Convergence GTC frame; Before the data division of the physical layer operations management maintenance PLOAM frame in handling said up GTC frame, the data division of said PLOAM frame is carried out the replacement of first identifier handle;
After handling the data division of said PLOAM frame, the data division of said PLOAM frame is carried out the replacement of second identifier handle.
8. method according to claim 7 is characterized in that, said data division to said upstream data carries out the replacement of first identifier to be handled, and the data division of said upstream data is carried out second identifier replacement processing, also comprises:
Port identifiers in the gigabit passive optical network GPON method for packing GEM frame that said up GTC frame is comprised replaces with said ECP Extended Capabilities Port identifier.
9. method according to claim 8 is characterized in that, said data division to said upstream data carries out the replacement of first identifier to be handled, and the data division of said upstream data is carried out second identifier replacement processing, also comprises:
Before the optical network unit ONU management of handling said GEM frame carrying and control interface OMCI message, said OMCI message is carried out said first identifier replacement handle;
After handling said OMCI message, said OMCI message is carried out said second identifier replacement handle.
10. according to each described method in the claim 1 to 9, it is characterized in that said method also comprises:
Expansion equipment identifier in the information that sends to said terminal equipment, expansion transmission container identifier and ECP Extended Capabilities Port identifier are replaced with corresponding apparatus identifier, transmission container identifier and port identifiers respectively, and form downlink data;
Send said downlink data to said terminal equipment.
11. a device of changing the identifier of terminal equipment is characterized in that, comprising:
Receiving element is used for the upstream data that receiving terminal apparatus sends, and the control section of said upstream data comprises the device identifier of indicating said terminal equipment;
Acquiring unit is used for the basis bandwidth authorizing information corresponding with said upstream data, obtains and the corresponding expansion equipment identifier of said upstream data;
Confirm the unit, the said expansion equipment identifier that said device identifier that the control section of the said upstream data that is used for confirming that said receiving element receives comprises and said acquiring unit obtain is complementary;
The first replacement unit, the said device identifier that the control section of the said upstream data that is used for said receiving element is received comprises replaces with the said expansion equipment identifier that said acquiring unit obtains.
12. device according to claim 11 is characterized in that, said acquiring unit comprises:
First obtains subelement, is used for obtaining the expansion transmission container identifier of said bandwidth authorizing information;
Second obtains subelement; Be used for according to terminal equipment packet map table in the registration phase generation; Obtain and the corresponding said expansion equipment identifier of said expansion transmission container identifier, wherein said terminal equipment packet map table comprises the corresponding relation between down going channel identifier, data feedback channel identifier, device identifier, transmission container identifier, port identifiers, expansion equipment identifier, expansion transmission container identifier and the ECP Extended Capabilities Port identifier.
13., it is characterized in that said definite unit also is used for according to claim 11 or 12 described devices:
When the device identifier that the device identifier that comprises at the control section of said upstream data and said expansion equipment identifier comprise is identical, confirm that device identifier and said expansion equipment identifier that the control section of said upstream data comprises are complementary.
14., it is characterized in that said device also comprises the second replacement unit according to each described device in the claim 11 to 13, the said second replacement unit is used for:
Before handling the data division of said upstream data, the data division of said upstream data is carried out the replacement of first identifier handle;
After handling the data division of said upstream data, the data division of said upstream data is carried out the replacement of second identifier handle.
15. device according to claim 14; It is characterized in that the replacement of said first identifier is handled and comprised device identifier, transmission container identifier and port identifiers are replaced with corresponding expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier respectively; The replacement of said second identifier is handled and is comprised expansion equipment identifier, expansion transmission container identifier and ECP Extended Capabilities Port identifier are replaced with corresponding apparatus identifier, transmission container identifier and port identifiers respectively.
16. device according to claim 15; It is characterized in that; Said expansion equipment identifier comprises the down going channel identifier DS-PON-ID of indicating downlink passage; And the said device identifier ONU-ID of indicating terminal equipment; Said expansion transmission container identifier comprises the said transmission container identifier ALLOC-ID of said down going channel identifier and indication transmission container, and said ECP Extended Capabilities Port identifier comprises the said port identifiers PORT-ID of said down going channel identifier and indication port.
17. device according to claim 15 is characterized in that, the said second replacement unit comprises:
The first replacement subelement; Be used for when said upstream data is up gigabit passive optical network GPON Transmission Convergence GTC frame; Before the data division of the physical layer operations management maintenance PLOAM frame in handling said up GTC frame, the data division of said PLOAM frame is carried out the replacement of first identifier handle;
The second replacement subelement is used for after handling the data division of said PLOAM frame, the data division of said PLOAM frame is carried out the replacement of second identifier handle.
18. device according to claim 17 is characterized in that, the said second replacement unit also comprises:
The 3rd replacement subelement, the port identifiers of the gigabit passive optical network GPON method for packing GEM frame that is used for said up GTC frame is comprised replaces with said ECP Extended Capabilities Port identifier.
19. device according to claim 18 is characterized in that, the said second replacement unit also comprises:
The 4th replacement subelement was used for before the optical network unit ONU management of handling said GEM frame carrying and control interface OMCI message, said OMCI message is carried out said first identifier replacement handle;
The 5th replacement subelement is used for after handling said OMCI message, said OMCI message is carried out said second identifier replacement handle.
20., it is characterized in that said device also comprises according to each described device in the claim 11 to 19:
The 3rd replacement unit; The expansion equipment identifier, expansion transmission container identifier and the ECP Extended Capabilities Port identifier that are used for sending to the information of said terminal equipment replace with corresponding apparatus identifier, transmission container identifier and port identifiers respectively, and form downlink data;
Transmitting element is used for sending said downlink data to said terminal equipment.
21. a passive optical network is characterized in that, comprising: optical line terminal and a plurality of optical network unit, said optical line terminal is connected to said a plurality of optical network unit through Optical Distribution Network;
Wherein, said optical network unit is used for sending upstream data to said optical network unit;
Said optical line terminal is used to receive the upstream data that carries the device identifier of indicating said optical network unit that said optical network unit sends; According to the bandwidth authorizing information corresponding with said upstream data; Obtain and the corresponding expansion equipment identifier of said upstream data; And when the device identifier that carries of confirming said upstream data and said expansion equipment identifier were complementary, the device identifier that said upstream data is carried replaced with said expansion equipment identifier.
22. passive optical network as claimed in claim 21; It is characterized in that; Have a plurality of downstream wavelength passages between said optical line terminal and the said a plurality of optical network unit; And the optical network unit of same downstream wavelength passage communicates through time division multiplexing and said optical line terminal, and said downstream wavelength passage identifies through the down going channel identifier, and wherein said expansion equipment identifier comprises said down going channel identifier and said device identifier.
23., it is characterized in that said optical line terminal comprises the device like the identifier of the described conversion terminal equipment of claim 9 to 20 like claim 21 or 22 described passive optical networks, wherein said terminal equipment is an optical network unit.
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