CN1946242A - Method and device for supporting TDM service in light connected network - Google Patents
Method and device for supporting TDM service in light connected network Download PDFInfo
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- CN1946242A CN1946242A CNA2006101409590A CN200610140959A CN1946242A CN 1946242 A CN1946242 A CN 1946242A CN A2006101409590 A CNA2006101409590 A CN A2006101409590A CN 200610140959 A CN200610140959 A CN 200610140959A CN 1946242 A CN1946242 A CN 1946242A
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Abstract
This invention relates to a method and a device for supporting TDM service in an optical access network including: loading the necessary transmitted datamation TDM service between the master control plate and interface plate of an OTL(optical line terminal) device and transferring data messages with TDM service via a data transmission bus, which simplifies the complexity of TDM service in an OLT so as to reduce the cost of TDM service since it's not necessary to set special TDM transmission bus and related multiple chip.
Description
Technical field
The present invention relates to technical field of optical network communication, relate in particular to the implementation of supporting the TDM business in a kind of PON (EPON) system.
Background technology
GPON (Gigabit Passive Optical Network) can provide the downstream rate of 1.244Gbit/s and 2.488Gbit/s and the upstream rate of all standards, and transmission range reaches 20km at least, has the characteristics of high-speed and high-efficiency transmission.And GPON has also adopted a brand-new standard GFP (interchangeable frame processing protocol) at transmission convergence layer.GFP a kind ofly can transparently encapsulate various data-signals existing network into, open, the general adaptive mapping techniques of standard signal efficiently, can adapt to Any user signal format and any transmission network standard, embody the flexible requirement that the service provider provides business comprehensively.
Owing to adopt the GFP mapping techniques among the GPON, make it can support TDM (time division multiplexing), Ethernet (Ethernet), ATM multiple business such as (asynchronous transfer modes), and, owing to use the 125 μ s frames of standard SDH (Synchronous Digital Hierarchy), thereby make GPON can directly support the TDM business.Support the GPON of TDM business can effectively save the networking cost of operator.
In GPON, carrying for the TDM business, specifically be to realize that by allowing frequency deviation according to the TDM business to change length GEM (G-PON Encapsulation Mode) frame promptly the TDM business is transmitted by being fitted in the GEM frame, and the length of TDM segmentation is pointed out in the PLI territory.
For realizing that GPON supports the TDM business, then need OLT (optical link termination) equipment side of GPON that corresponding support is provided, specifically as shown in Figure 1, specifically comprise:
(1) because the TDM business is a synchronous service, realize that the method for synchronization can adopt the mode of unified reference clock, in Fig. 1, provided the mode of unified reference clock, wherein, the clock transmission is by BITS (the comprehensive regularly feed system of building) is provided in the OLT side interface, be sent in OLT internal clocking module and lock, then, deliver to the OLT interface module by the clock internal line, this clock is delivered on the ONT, and ONT recovers clock signal from GMAC (access control of gigabit medium) chip, locks this clock for local clock module, simultaneously as unified system reference clock, thereby realized that whole TDM link clock is synchronous.
(2) based on above-mentioned clock after synchronously, the transmission of corresponding TDM business is handled and is comprised:
1, on up direction, the transmission processing procedure of corresponding TDM business is:
GMAC module among the ONT (Optical Network Terminal) is from receiving the serial data stream of E1/T1 frame, finish and pass and conversion, again according to ITU-T G.984.3 TDMoGEM (the TDM business is packaged in the GEM frame) mode of agreement regulation be packaged into the GEM frame format, and behind buffer memory, send to OLT;
After the GMAC chip of OLT is received described GEM frame from PON light mouth, handle, for the frame of TDMoGEM according to the encapsulation of separating GFP, carry out and go here and there the conversion work, output to multiplexing chip, by this multiplexing chip finish many E1 after converging to the conversion driving of back board high-speed serial signal on the high speed TDM bus of backboard, perhaps, also can not carry out the conversion of high speed signal, directly be driven on the backboard TDM bus; The multiple connection cross chips of master control Switching Module receives described signal, and finishes the conversion of backboard high speed signal, and the TDM traffic aggregation between the intersection between the E1 and a plurality of interface board then, is provided to upstream Interface to the function of SDH signal.
2, on down direction, the transmission processing procedure of corresponding TDM business is:
OLT receives the TDM signal from upstream Interface, behind the multiple connection cross chips, is distributed to different OLT interface boards by the TDM bus.After multiplexing chip in the interface board is received described TDM signal, untie and send TDM information to the GMAC process chip, GMAC goes here and there and changes, form packet, and be encapsulated as the GEM frame according to the packaged type of TDMoverGEM, afterwards, behind this GEM frame of buffer memory, send it to ONT;
After the GMAC of ONT receives described downlink data GEM frame, from data flow, detect the TDMoGEM frame according to the PORTID in the GEM frame head (port-mark), wherein E1/T1 frame extracted be sent to, convert serial data stream to and be sent to TDM Framer (TDM framing) chip, and, the TDM signal is sent on the E1 circuit by the clock of this TDM Framer chip according to locking.
As can be seen, in above-mentioned prior art,, adopted in the interface board of OLT multiplexing chip has been set, and the implementation structure of TDM bus has been set between interface board and master control Switching Module (being master control borad) in order in OLT equipment, to realize support to the TDM business.
Therefore, the implementation of supporting the TDM business in OLT equipment that provides of prior art has the implementation structure complexity, the shortcoming that cost is higher.
Summary of the invention
The purpose of this invention is to provide method and the device of supporting the TDM business in a kind of Optical Access Network, thereby can be so that in optical link termination equipment, need not to be provided with process chip and the transmission line that is specifically designed to TDM operation transmission, reduced and realized the complexity of TDM business, and then reduced the cost of realizing the TDM business.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the method for supporting the TDM business in a kind of Optical Access Network, comprising:
In optical link termination equipment, the TDM business after the datumization that the transmitting terminal of time division multiplexing tdm business will need to transmit is packaged in the data message, and sends by data transmission bus;
At the receiving terminal of TDM business, the described data message that receives is carried out decapsulation handle.
Wherein, described data transmission bus can be the Ethernet transfer bus, and described data message can be the Ethernet message.
In optical link termination equipment, for the TDM business that is sent to interface board by master control borad, described method comprises:
In the master control borad of optical link termination equipment the TDM business that receives is encapsulated as Gigabit Passive Optical Network encapsulation mode GEM frame, afterwards, the GEM frame is encapsulated in the data message, the destination address of described data message is for receiving the interface board address of TDM business;
Described data message is sent to the interface board of the optical link termination equipment of described destination address correspondence by the Ethernet transfer bus;
Described interface board passes to the Ethernet data message that receives and carries out the decapsulation processing, obtains described GEM frame.
And, in master control borad, described data message passed to be arranged in the master control borad or to be independent of master control borad the master control borad crosspoint is set, and be transferred to interface board by described master control borad crosspoint.
In optical link termination equipment, for the TDM business that is sent to master control borad by interface board, described method comprises:
The GEM frame of the TDM business that is packaged with that will receive in the interface board of optical link termination equipment is encapsulated as the Ethernet data message, and described Ethernet data message is sent to master control borad;
Master control borad passes to internal or external TDM Service Processing Module with the Ethernet data message that receives, and handles to carry out decapsulation, obtains described GEM frame, and then extracts the described TDM business that obtains from described GEM frame.
In optical link termination equipment, for the TDM business that is sent to master control borad by interface board, described method further can comprise:
Interface board is that the Ethernet data message of the multiple connection cross chips address in the master control borad sends to and is arranged in the master control borad or is independent of the master control crosspoint that master control borad is provided with destination address;
The master control crosspoint passes to the multiple connection cross chips that is internal or external at master control borad with described Ethernet data message, and by the multiple connection cross chips corresponding TDM business is extracted from described Ethernet data message, sends after reverting to serial signal.
Described multiple connection cross chips address is the MAC Address of multiple connection cross chips.
The present invention also provides the device of supporting the TDM business in a kind of Optical Access Network, and this device is arranged in the optical link termination equipment, and comprises:
The professional encapsulation process of TDM unit is arranged in the professional transmitting terminal of TDM, is used for the TDM business after the datumization to be sent is packaged in data message;
The professional processing unit that sends of TDM is arranged in the professional transmitting terminal of TDM, and the data message that is used for being packaged with the TDM business after the datumization sends by data transmission bus;
The professional processing unit that receives of TDM is arranged in the professional receiving terminal of TDM, is used to receive described data message, and this message is passed to the professional decapsulation processing unit of TDM;
The professional decapsulation processing unit of TDM is arranged in the professional receiving terminal of TDM, is used for that described data message is carried out decapsulation and handles.
The professional transmitting terminal of described TDM is interface board or the master control borad in the optical link termination equipment, and the professional receiving terminal of corresponding described TDM is master control borad or the interface board in the optical link termination equipment.
The GEM frame that the professional encapsulation process of described TDM unit specifically is used for being packaged with the TDM business is encapsulated as the Ethernet data message, and the professional encapsulation process unit of described TDM and TDM are professional sends in the multiple connection cross chips that processing unit is arranged at the Gigabit Ethernet media interviews control GMAC chip of interface board and/or master control borad; Accordingly, described TDM is professional receives in the GMAC chip that processing unit and the professional decapsulation processing unit of TDM be arranged at the multiple connection cross chips of master control borad and/or interface board.
If the professional processing unit that sends of described TDM is arranged in the multiple connection cross chips of master control borad, the data message that then will be packaged with the GEM frame sends to the master control crosspoint that is arranged in the master control borad or is independent of the master control borad setting, to transmit described data message by the Ethernet transfer bus; If the professional processing unit that sends of described TDM is arranged in the GMAC chip of interface board, the GEM frame of the TDM business that is packaged with that then will receive is encapsulated as the Ethernet data message, and sends to master control borad;
If the professional decapsulation processing unit of described TDM is arranged at master control borad, then the Ethernet data message that receives is passed to internal or external TDM Service Processing Module, handle to carry out decapsulation, obtain described GEM frame, and then from the GEM frame, extract the described TDM business that obtains; If the professional decapsulation processing unit of described TDM is arranged at interface board, then the Ethernet data message that receives is carried out decapsulation and handle, to obtain described GEM frame.
When the professional encapsulation process of described TDM unit is arranged in the GMAC chip, the destination address that then is packaged with the data message of TDM business is the address of multiple connection cross chips, and/or, when the professional encapsulation process chip of described TDM was arranged in the multiple connection cross chips, the destination address that then is packaged with the data message of TDM business was the address of an interface board.
As seen from the above technical solution provided by the invention, realization of the present invention makes the TDM business of mutual transmission between the interface board of optical link termination equipment and master control borad to realize by the Ethernet transfer bus of interface board and master control borad, thereby make and in optical link termination equipment, realize need not to be provided with specially corresponding TDM transmission line and corresponding multiplexing chip in the TDM business procedure.Therefore, realization of the present invention can be reduced at the complexity that realizes the TDM business in the optical link termination equipment, thereby effectively is reduced in the cost of realizing the TDM business in the optical link termination equipment.
Description of drawings
Fig. 1 is a structural representation of realizing the TDM business in the prior art;
Fig. 2 is for realizing the specific implementation schematic flow sheet of TDM business among the present invention;
Fig. 3 is for realizing the specific implementation structural representation of the device of TDM business among the present invention;
Fig. 4 is the structural representation one of the concrete Application Example of installing described in the present invention;
Fig. 5 carries out the protocol stack structure schematic diagram that the professional encapsulation of TDM can be adopted;
Fig. 6 is the structural representation two of the concrete Application Example of installing described in the present invention.
Embodiment
Core of the present invention is the transmission of the TDM business after utilizing the Ethernet transfer bus to carry out datumization in the optical link termination equipment of Optical Access Network, saving the setting of TDM service-specific transmission line and corresponding process chip, thereby reduce the cost of realizing the TDM business among the OLT.
Below at first in conjunction with the accompanying drawings to supporting the specific implementation process of the method for TDM business to be described in the optical-fiber network provided by the invention.
Specifically as shown in Figure 2, the concrete processing procedure of the method for the invention comprises:
(1) in OLT, transmit the processing procedure of TDM business to master control borad by interface board:
The interface board of step 21:OLT equipment receives the TDM business after the datumization that need send to master control borad, for example, receives the GEM frame that carries the TDM business;
The TDM business of step 22:OLT equipment after to described datumization encapsulates, and is encapsulated as the data message that carries the TDM business after this datumization;
Be specially: the GEM frame that will be packaged with the TDM business after the described datumization continues to be packaged in the Ethernet data message, the destination address of described Ethernet data message is a master control borad, and described destination address is specifically as follows MAC (medium access control) address of the multiple connection cross chips in the master control borad;
Described encapsulation process process specifically can be finished dealing with by the GMAC chip in the interface board;
Step 23: interface board sends to master control borad with the described data message that carries the TDM business (as the GEM frame) after the datumization by the transmission of Ethernet transfer bus;
After master control borad receives described data message, specifically can pass to described multiple connection cross chips by the exchange of master control crosspoint, afterwards, obtain TDM business (as the GEM frame) after the datumization by the decapsulation of multiple connection cross chips, and then extract corresponding TDM business the TDM business after datumization (as the GEM frame), and described TDM business is carried out transmission process.
(2) in OLT, transmit the processing procedure of TDM business to interface board by master control borad:
The master control borad of step 24:OLT equipment receives the TDM business that need send to interface board, and it is carried out the datumization encapsulation process, the TDM business after the acquisition datumization, and for example, the TDM business that receives is encapsulated as the GEM frame;
The TDM business of step 25:OLT equipment after to described datumization encapsulates, and is encapsulated as the data message that carries the TDM business after this datumization;
Be specially: the GEM frame that will be packaged with the TDM business after the described datumization continues to be packaged in the Ethernet data message, and the destination address of described Ethernet data message is an interface board address in the OLT equipment, as the MAC Address of interface board;
Corresponding encapsulation process process specifically can be finished by the multiple connection cross chips in the master control borad, finish corresponding encapsulation process after, described data message is sent to master control crosspoint in the master control borad;
Step 26: master control borad sends to relevant interface board with the described data message that carries the TDM business (as the GEM frame) after the datumization by the transmission of Ethernet transfer bus;
Be after the master control crosspoint receives described data message, described data message sent to the interface board of the optical link termination equipment of described destination address correspondence by the Ethernet transfer bus according to the destination address information in the message;
Step 27: after the GMAC chip in the interface board obtains described message, described message is carried out decapsulation handle, obtaining the TDM business (as the GEM frame) after the datumization wherein, and carry out the corresponding subsequent transmission process.
In processing procedure shown in Figure 2, there is no the priority sequential relationship of execution between the processing procedure that processing procedure that step 21 to step 23 is described and step 24 to step 26 is described, and, two processing procedures all can realize between interface board and master control borad separately, certainly, also can between master control borad and interface board, realize simultaneously.
Below will be more in conjunction with the accompanying drawings to supporting the specific implementation structure of the device of TDM business to be described in the optical-fiber network provided by the invention.
As shown in Figure 3, described device is arranged in the optical link termination equipment, and specifically can comprise: the professional encapsulation process of TDM unit, and the professional processing unit that sends of TDM, TDM is professional to receive processing unit, and the professional decapsulation processing unit of TDM, wherein:
(1) the professional encapsulation process of TDM unit is arranged in the professional transmitting terminal of TDM, is used for the TDM business after the datumization to be sent is packaged in data message, and the destination address of message is the address information of the professional receiving terminal of TDM;
The GEM frame that the professional encapsulation process of described TDM unit specifically can be used for being packaged with the TDM business is encapsulated as the Ethernet data message;
(2) the professional processing unit that sends of TDM is arranged in the professional transmitting terminal of TDM, and the data message that is used for being packaged with the TDM business after the datumization sends to TDM business receiving terminal by data transmission bus (as the Ethernet transfer bus etc.);
The professional transmitting terminal of the described TDM that describes in above-mentioned (1) and (2) can be interface board or the master control borad in the optical link termination equipment; If during interface board, the professional transmitting terminal of this TDM is specifically as follows GMAC (Gigabit Ethernet media interviews control) chip, if during master control borad, this TDM business transmitting terminal is specifically as follows the multiple connection cross chips;
(3) the professional processing unit that receives of TDM is arranged in the professional receiving terminal of TDM, is used to receive the data message that is packaged with the TDM business after the datumization, and this message is passed to the professional decapsulation processing unit of TDM;
(4) the professional decapsulation processing unit of TDM, be arranged in the professional receiving terminal of TDM, being used for that the described data message that is packaged with the TDM business after the datumization is carried out decapsulation handles, be specially: on master control borad, the decapsulation of at first carrying out described data message handle to obtain the TDM business after the described datumization, afterwards, extract the described TDM business that obtains the TDM business after described datumization; On interface board, described data message is carried out decapsulation handle, obtain the TDM business (as the GEM frame) after the described datumization, and the TDM business after the datumization is transmitted.
The professional decapsulation processing unit of described TDM specifically is to be finished by the TDM Service Processing Module, described TDM Service Processing Module specifically can be internal or external in master control borad or the interface board, as Fig. 4 and shown in Figure 6, just the TDM Service Processing Module that multiple connection cross chips among the figure and interface module are formed can be arranged at master control borad (being the master control Switching Module) inside or be independent of this master control borad plate setting.
The professional receiving terminal of the described TDM that describes in above-mentioned (3) and (4) is corresponding with the professional transmitting terminal of TDM, and it can be master control borad or the interface board in the optical link termination equipment; If during master control borad, the professional receiving terminal of this TDM is specifically as follows the multiple connection cross chips, if during interface board, the professional receiving terminal of this TDM is specifically as follows the GMAC chip.
In the device of the present invention, professional encapsulation process unit of described TDM and TDM be professional to be sent in the multiple connection cross chips that processing unit specifically can be arranged at the GMAC chip of interface board and/or master control borad, and if be arranged in the multiple connection cross chips of master control borad, then TDM is professional sends data message that processing unit will be packaged with the TDM business after the datumization and sends to and be arranged in the master control borad or be independent of the master control crosspoint that master control borad is provided with, and is responsible for described data message is sent to the corresponding interface plate by described master control crosspoint; With professional encapsulation process unit of described TDM and the corresponding setting of TDM professional transmission processing unit, described TDM is professional to be received in the GMAC chip that processing unit and the professional decapsulation processing unit of TDM be arranged at the multiple connection cross chips of master control borad and/or interface board, is packaged with the data message of the TDM business after the datumization and obtains described TDM business so that decapsulation is described.
And, in the device of the present invention, if the professional encapsulation process of described TDM unit is arranged in the GMAC chip, the destination address that then is packaged with the data message of TDM business is the MAC Address of multiple connection cross chips, and/or, when the professional encapsulation process chip of described TDM was arranged in the multiple connection cross chips, the destination address that then is packaged with the data message of TDM business was the MAC Address of an interface board, thereby made the data message after the encapsulation can correctly be sent to the professional receiving terminal of TDM.
In conjunction with Fig. 4 and Fig. 5 specific embodiments of the invention are elaborated below, certainly, protection scope of the present invention is not limited to this embodiment again.
Realization of the present invention makes backboard narrow-band high-speed SDH (Synchronous Digital Hierarchy) bus in the OLT equipment to save, to simplify the structure that realizes the TDM business.
At first, on up direction, promptly GPON OLT (OLT of the Gigabit Passive Optical Network) transmission and processing process that receives the GEM frame of the TDM business that carries that Native ONT (local Optical Network Terminal) sends comprises:
This process mainly is to utilize in TDMoverGEM (being encapsulated as the TDM business of the GEM frame) frame, TDM by datumization mode, thereby directly tdm data partly is encapsulated as in the GMAC chip of the interface board on OLT (being at least one interface board that the OLT interface module comprises) and can directly be carried on the data message that transmits on the Ethernet, so that the transmission of TDM business can be shared the GE data bus bandwidth on the described backboard, data are sent on the master control borad;
Master control crosspoint (being GE SW, the tendency ethernet switching module) sends to message according to target MAC (Media Access Control) address and is used for TDM decapsulation processing unit that the TDM business is recovered, and as shown in Figure 4, this unit can be built in the transposed multiple chip; Described TDM decapsulation processing unit is specifically according to packaged type, and unified clock becomes the E1 serial signal with the TDM business recovery, described E1 serial signal is carried out the multiple connection cross processing, to finish interleaving function at a plurality of E1 passages, each E1 signal multiplexing is on high-speed SDH interface or E1 interface signal, up by the interface module in the master control borad.
Secondly, on down direction, promptly the transmission and processing process that receives after the TDM business that need send to interface board of the master control borad among the OLT (being the master control Switching Module) comprises:
Corresponding with the TDM service transferring mode that up direction adopts, on down direction, at first, need the TDM service signal be distributed to the professional encapsulation process of inner TDM unit according to the information of configuration by the multiple connection cross chips, and be responsible for TDM service signal string and transform the back forming data message by this unit, described data message is used predetermined form and is encapsulated in the Ethernet message, and the destination address of described Ethernet message is for specifying the MAC Address of OLT interface board (also can be called veneer);
Afterwards, the multiple connection cross chips sends to master control crosspoint (being GESW) with described Ethernet message, to arrive interface board after with described Ethernet message switching by GE SW, after the professional decapsulation processing unit of TDM in the interface board receives described message, the TDM business datum is extracted, and be encapsulated into TDM over GEM frame, go downwards to Native ONT.
In the downlink processing process, the multiple connection cross chips specifically can adopt protocol stack as shown in Figure 5 that the GEM frame that is packaged with the TDM business is carried out encapsulation process.
Concrete encapsulation process mode comprises: on the multiple connection cross chips, corresponding GEM frame is encapsulated in the Ethernet message, and the MAC DA (target MAC (Media Access Control) address) of described Ethernet message inserts the MAC Address of an interface board, and what the MAC SA (source MAC) of Ethernet message inserted is the MAC Address of multiple connection cross chips; Need to prove, in OLT, the corresponding MAC Address of each interface board, the corresponding MAC Address of the multiple connection cross chips of master control borad.
Corresponding on up direction, the GMAC chip is basic identical to the encapsulation process mode of the encapsulation process mode of TDM business and down direction, difference only is, at this moment, what the MACDA of described Ethernet message inserted is the MAC Address of multiple connection cross chips, and what the MAC SA of Ethernet message inserted is the MAC Address of an interface board.
In the processing procedure that the TDM business after the datumization is packaged in the Ethernet message, can also add 802.1Q VLAN and 802.1p carries out data isolation and priority flag according to Ethernet protocol, guarantee professional limit priority.
In addition, among the present invention, also can adopt the encapsulation format of other standards, carry out the encapsulation process of TDM business as PWE3 (pseudo wire emulation technology) or the like, afterwards, the data message that will be packaged with the TDM business after the datumization again can be crossed the Ethernet transfer bus and transmits between master control borad and interface board.
In sum, realization of the present invention can be reduced at the complexity that realizes the TDM business in the optical link termination equipment, to reduce the cost of realizing the TDM business among the OLT.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily 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 (10)
1, support the method for TDM business in a kind of Optical Access Network, it is characterized in that, comprising:
In optical link termination equipment, the TDM business after the datumization that the transmitting terminal of time division multiplexing tdm business will need to transmit is packaged in the data message, and sends by data transmission bus;
At the receiving terminal of TDM business, the described data message that receives is carried out decapsulation handle.
2, method according to claim 1 is characterized in that, described data transmission bus is the Ethernet transfer bus, and described data message is the Ethernet message.
According to the method under the claim 1, it is characterized in that 3, in optical link termination equipment, for the TDM business that is sent to interface board by master control borad, described method comprises:
In the master control borad of optical link termination equipment the TDM business that receives is encapsulated as Gigabit Passive Optical Network encapsulation mode GEM frame, afterwards, the GEM frame is encapsulated in the data message, the destination address of described data message is for receiving the interface board address of TDM business;
Described data message is sent to the interface board of the optical link termination equipment of described destination address correspondence by the Ethernet transfer bus;
Described interface board passes to the Ethernet data message that receives and carries out the decapsulation processing, obtains described GEM frame.
According to claim 1,2 or 3 described methods, it is characterized in that 4, in optical link termination equipment, for the TDM business that is sent to master control borad by interface board, described method comprises:
The GEM frame of the TDM business that is packaged with that will receive in the interface board of optical link termination equipment is encapsulated as the Ethernet data message, and described Ethernet data message is sent to master control borad;
Master control borad passes to internal or external TDM Service Processing Module with the Ethernet data message that receives, and handles to carry out decapsulation, obtains described GEM frame, and then extracts the described TDM business that obtains from described GEM frame.
5, method according to claim 4 is characterized in that, in optical link termination equipment, for the TDM business that is sent to master control borad by interface board, described method further comprises:
Interface board is that the Ethernet data message of the multiple connection cross chips address in the master control borad sends to and is arranged in the master control borad or is independent of the master control crosspoint that master control borad is provided with destination address;
The master control crosspoint passes to the multiple connection cross chips that is internal or external at master control borad with described Ethernet data message, and by the multiple connection cross chips corresponding TDM business is extracted from described Ethernet data message, sends after reverting to serial signal.
6, support the device of TDM business in a kind of Optical Access Network, it is characterized in that this device is arranged in the optical link termination equipment, and comprises:
The professional encapsulation process of TDM unit is arranged in the professional transmitting terminal of TDM, is used for the TDM business after the datumization to be sent is packaged in data message;
The professional processing unit that sends of TDM is arranged in the professional transmitting terminal of TDM, and the data message that is used for being packaged with the TDM business after the datumization sends by data transmission bus;
The professional processing unit that receives of TDM is arranged in the professional receiving terminal of TDM, is used to receive described data message, and this message is passed to the professional decapsulation processing unit of TDM;
The professional decapsulation processing unit of TDM is arranged in the professional receiving terminal of TDM, is used for that described data message is carried out decapsulation and handles.
7, device according to claim 6 is characterized in that, the professional transmitting terminal of described TDM is interface board or the master control borad in the optical link termination equipment, and the professional receiving terminal of corresponding described TDM is master control borad or the interface board in the optical link termination equipment.
8, device according to claim 7, it is characterized in that, the GEM frame that the professional encapsulation process of described TDM unit specifically is used for being packaged with the TDM business is encapsulated as the Ethernet data message, and the professional encapsulation process unit of described TDM and TDM are professional sends in the multiple connection cross chips that processing unit is arranged at the Gigabit Ethernet media interviews control GMAC chip of interface board and/or master control borad; Accordingly, described TDM is professional receives in the GMAC chip that processing unit and the professional decapsulation processing unit of TDM be arranged at the multiple connection cross chips of master control borad and/or interface board.
9, device according to claim 8 is characterized in that,
If the professional processing unit that sends of described TDM is arranged in the multiple connection cross chips of master control borad, the data message that then will be packaged with the GEM frame sends to the master control crosspoint that is arranged in the master control borad or is independent of the master control borad setting, to transmit described data message by the Ethernet transfer bus; If the professional processing unit that sends of described TDM is arranged in the GMAC chip of interface board, the GEM frame of the TDM business that is packaged with that then will receive is encapsulated as the Ethernet data message, and sends to master control borad;
If the professional decapsulation processing unit of described TDM is arranged at master control borad, then the Ethernet data message that receives is passed to internal or external TDM Service Processing Module, handle to carry out decapsulation, obtain described GEM frame, and then from the GEM frame, extract the described TDM business that obtains; If the professional decapsulation processing unit of described TDM is arranged at interface board, then the Ethernet data message that receives is carried out decapsulation and handle, to obtain described GEM frame.
10, device according to claim 9, it is characterized in that, when the professional encapsulation process of described TDM unit is arranged in the GMAC chip, the destination address that then is packaged with the data message of TDM business is the address of multiple connection cross chips, and/or, when the professional encapsulation process chip of described TDM was arranged in the multiple connection cross chips, the destination address that then is packaged with the data message of TDM business was the address of an interface board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101409590A CN1946242B (en) | 2006-10-19 | 2006-10-19 | Method and device for supporting TDM service in light connected network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101409590A CN1946242B (en) | 2006-10-19 | 2006-10-19 | Method and device for supporting TDM service in light connected network |
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| CN1946242A true CN1946242A (en) | 2007-04-11 |
| CN1946242B CN1946242B (en) | 2010-09-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594453A (en) * | 2011-11-16 | 2012-07-18 | 上海巨视安全防范技术有限公司 | Optical fiber time division transmission method for Ethernet data |
| CN103167195A (en) * | 2013-04-10 | 2013-06-19 | 烽火通信科技股份有限公司 | Communication system for supporting VOIP (voice over internet protocol) and PSTN (public switched telephone network) integration |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7031343B1 (en) * | 2000-11-17 | 2006-04-18 | Alloptic, Inc. | Point-to-multipoint passive optical network that utilizes variable-length packets |
| KR100547722B1 (en) * | 2001-11-10 | 2006-02-01 | 삼성전자주식회사 | Gigabit ethernet passive optical network system and method for media access control thereof |
| CN1453944A (en) * | 2002-04-27 | 2003-11-05 | 桦光电讯股份有限公司 | Passive fiber network connected to IP network and its connection method |
| US7535930B2 (en) * | 2003-04-10 | 2009-05-19 | Samsung Electronics Co., Ltd. | GEM frame structure showing payload type of frame and method for processing data thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594453A (en) * | 2011-11-16 | 2012-07-18 | 上海巨视安全防范技术有限公司 | Optical fiber time division transmission method for Ethernet data |
| CN103167195A (en) * | 2013-04-10 | 2013-06-19 | 烽火通信科技股份有限公司 | Communication system for supporting VOIP (voice over internet protocol) and PSTN (public switched telephone network) integration |
| CN103167195B (en) * | 2013-04-10 | 2016-01-20 | 烽火通信科技股份有限公司 | A kind of communication system supporting VOIP and the PSTN network integration |
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| Publication number | Publication date |
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| CN1946242B (en) | 2010-09-22 |
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