CN103974151A - Method for transmitting downlink messages in photoelectric hybrid system and optical coaxial units - Google Patents
Method for transmitting downlink messages in photoelectric hybrid system and optical coaxial units Download PDFInfo
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- CN103974151A CN103974151A CN201310046367.2A CN201310046367A CN103974151A CN 103974151 A CN103974151 A CN 103974151A CN 201310046367 A CN201310046367 A CN 201310046367A CN 103974151 A CN103974151 A CN 103974151A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0071—Provisions for the electrical-optical layer interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0077—Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a method for transmitting downlink messages in a photoelectric hybrid system and optical coaxial units. The method includes connecting the optical coaxial units OCU with a plurality of coaxial distribution networks CDN, creating mapping relation information of coaxial network units CNU and OCU ports; transmitting the messages to the coaxial distribution networks CDN with target coaxial network units CNU via the OCU ports corresponding to the target coaxial network units CNU according to the created mapping relation information of the coaxial network units CNU and the OCU ports when the optical coaxial units OCU receive the messages which are transmitted from optical link terminals OLT to the target coaxial network units CNU. The coaxial distribution networks CDN with the coaxial network units CNU are connected to the OCU ports of the optical coaxial units OCU. The method and the optical coaxial units have the advantages that after the optical coaxial units OCU receive the messages from the optical link terminals OLT, mapping relation information of LLID (logic link identification) and RFID (radiofrequency identification) of RF (radiofrequency) ports is queried, the messages can be transmitted to the corresponding coaxial network units CNU via the corresponding coaxial distribution networks CDN, messages of all the other coaxial distribution networks CDN which are irrelevant to OCU connection are abandoned, accordingly, unnecessary copying procedures can be omitted, and the downlink messages can be completely efficiently forwarded.
Description
Technical field
The present invention relates to the photoelectricity hybrid system of EPON+coaxial broadband networks, relate in particular to sending method and the same axle unit of light of downlink message in a kind of photoelectricity hybrid system.
Background technology
A FSN that basic trend is IPization of next generation network development.For Cable (cable) operator, as broadcasting and TV, pull for making full use of its existing a large amount of Cable service wires, EPON (Passive Optical Network has been proposed, PON) with coaxial broadband networks (Ethernet over Cable, EOC) Remolding Solution of mixed networking, PON and EOC mixed networking are typically expressed as " PON+EOC ".
As shown in Figure 1, in the networking mode of typical PON+EOC, comprise: PON, EOC and background management system, wherein, in PON, comprise OLT (Optical Line Terminal, optical line terminal), photosphere part in ODN (Optical Distributed network, Optical Distribution Network) and OCU (Optical Coax Unit, the same axle unit of light).In EOC, comprise electric layer segment and the CNU (CoaxialNetwork Unit, coaxial network unit) of OCU.Wherein, OCU can be an integrated equipment as shown in fig. 1, also can be formed by two equipment, be photosphere part of devices equipment (the Optical networkUnit of OCU, and the coaxial electrical part of devices equipment of OCU (Coaxial Line Terminal, CLT) ONU).OCU is the headend in EOC scheme, and CNU is the terminal equipment in EOC scheme.
There is at present the implementation of a kind of EOC, i.e. EPoC (EPoN Over Coax, based on coaxial access technology and the scheme of EPONMAC).The networking schematic diagram of PON+EPoC as shown in Figure 2, this networking belongs to a kind of concrete form of PON+EOC networking, in the whole system framework shown in this networking diagram, the photosphere module that photosphere part comprises OLT+ODN+EPoC OCU, electricity layer module+CDN (Coaxial Distributed Unit)+CNU that electric layer segment comprises EPoCOCU.In this framework, user's side of CNU and OCU is the physical layer based on Coax, but MAC can reuse the MAC of EPON.
At present, in the time of the corresponding multiple RF of light mouth (radio frequency) in OCU mouthfuls, in downlink message repeating process, how the downlink message that mails to OCU from OLT sends to the CNU corresponding CDN by correct RF mouth, and the bandwidth that does not take other CDN is current problem in urgent need to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide sending method and the same axle unit of light of downlink message in a kind of photoelectricity hybrid system, can, in the situation that an OCU connects multiple CDN, realize the transmission of downlink message.
For solving the problems of the technologies described above, the sending method of downlink message in a kind of photoelectricity hybrid system of the present invention, comprising:
Light is connected with multiple Coaxial distribution network network CDN with axle unit OCU, sets up the mapping relations information of coaxial network unit CNU and OCU port, and described OCU port is the port of the OCU that is connected to of the CDN under CNU;
Described OCU is in the time receiving optical line terminal OLT and send to the message of object CNU, and according to the described CNU setting up and the mapping relations information of OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU.
Further, the mapping relations information of the mark of the logical links label L LID that the mapping relations information of described CNU and OCU port is described CNU and the radio frequency port of OCU, the RF port of described OCU is the RF port of the OCU of the CDN connection under described CNU.
Further, according to the described CNU setting up and the mapping relations information of OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU, comprising:
Described in described OCU basis, send to the LLID carrying in the message of object CNU, inquire about the mapping relations information of the mark of the LLID of described object CNU and the RF port of OCU, obtain the mark of corresponding RF port, the mark of the RF port obtaining according to inquiry, sends to the CDN under object CNU by corresponding RF port by described message.
Further, the mapping relations information of the mark of the EPON media interviews control PON MAC in LLID and OCU that the mapping relations information of described CNU and OCU port is described CNU, described PON MAC be with described CNU under PONMAC corresponding to RF port that connect of CDN.
Further, according to the described CNU setting up and the mapping relations information of OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU, comprising:
Described in described OCU basis, send to the LLID carrying in the message of object CNU, inquire about the mapping relations information of the mark of the PON MAC in LLID and the OCU of described object CNU, know the mark of the PON MAC that described object CNU is corresponding, described message is sent to the CDN under object CNU by the PON MAC corresponding by described object CNU.
Further, the same axle unit of a kind of light, comprising: light-receiving sending module, EPON media interviews control PON MAC and control module, and described control module is connected with described PON MAC, described PON MAC is also connected with multiple Coaxial distribution network network CDN, wherein:
Described control module, for setting up coaxial network unit CNU and the light mapping relations information with axle unit OCU port, described OCU port is the port of the OCU that is connected to of the CDN under CNU;
Described light-receiving sending module, sends to the message of object CNU for receiving optical line terminal OLT, the message of reception is sent to described PON MAC;
Described PON MAC, in the time receiving the message of described light-receiving sending module transmission, according to the mapping relations information of described CNU and OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU.
Further, described OCU port is radio frequency port;
The mapping relations information of the mark of the logical links label L LID that the mapping relations information of described CNU and OCU port is described CNU and the radio frequency port of OCU, the RF port of described OCU is the RF port of the OCU of the CDN connection under described CNU.
Further, described PON MAC, specifically for sending to the LLID carrying in the message of object CNU described in basis, inquire about the mapping relations information of the mark of the LLID of described object CNU and the RF port of OCU, obtain the mark of corresponding RF port, the mark of the RF port obtaining according to inquiry, sends to the CDN under object CNU by corresponding RF port by described message.
Further, described PON MAC is multiple, and described OCU port is RF port, and each PON MAC is connected with a RF port, and each RF port connects a CDN;
The mapping relations information of the LLID that the mapping relations information of described CNU and OCU port is described CNU and the mark of PONMAC, described PON MAC be with described CNU under PON MAC corresponding to RF port that connect of CDN.
Further, described PON MAC, specifically for sending to the LLID carrying in the message of object CNU described in basis, inquire about the mapping relations information of the LLID of described object CNU and the mark of PON MAC, when the LLID carrying is corresponding with self mark, described message is sent to the CDN under object CNU in message.
In sum, when the corresponding multiple RF mouth of light-receiving sending module in the present invention in OCU, by set up the mapping relations information between the LLID of mark CNU and the RFID of mark RF mouth on OCU, complete the filtration of downlink message is forwarded.In this way, OCU receives after the message from OLT, the mapping relations information of the LLID having set up by inquiry and the RFID of RF mouth, thereby message is sent in corresponding CNU by corresponding CDN, abandon the message of all CDN that do not belong to this OCU connection, avoid unnecessary reproduction process, complete the efficient forwarding of downlink message.
Brief description of the drawings
Fig. 1 is the Organization Chart of typical PON+EOC system in prior art;
Fig. 2 is the Organization Chart of PON+EPoC of the prior art;
Fig. 3 is the flow chart of the sending method of downlink message when the corresponding multiple RF port of PON MAC in embodiment of the present invention;
Fig. 4 is the flow chart of the sending method of downlink message when PON MAC and RF port are corresponding one by one in embodiment of the present invention;
Fig. 5 is that a kind of light of embodiment of the present invention is with the Organization Chart of axle unit;
Fig. 6 is that the another kind of light of embodiment of the present invention is with the Organization Chart of axle unit.
Embodiment
Present embodiment is passed through at PON+EOC, particularly in EPoC photoelectricity hybrid system, in the time of the corresponding multiple RF port of light mouth of OCU, when a multiple CDN of OCU equipment connection, corresponding one by one by the multiple EPON media interviews controls (PON MAC) on OCU and multiple RF port; Or the corresponding multiple RF ports of PON MAC on OCU are set up the mapping relations information of CNU and OCU port on OCU.Downlink message filters by this mapping relations information, thereby makes corresponding downlink message can pass through corresponding RF port, and CDN arrives corresponding CNU, completes the efficient forwarding of downlink message.
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Example 1:
As shown in Figure 3, in OCU, comprise a light-receiving sending module, a PON MAC, corresponding multiple RF ports simultaneously, the CDN connecting by each RF port connects CNU, and the sending method of downlink message in the photoelectricity hybrid system of present embodiment, comprising:
S301:CNU1 (object CNU) initialization procedure that powered on, the control module of OCU is set up the mapping relations information of the LLID of CUN1 and the mark of corresponding RF port in PON MAC by the initialization procedure of CNU1;
In initialization procedure, OLT is that CNU1 distributes unique LLID.Because OCU1 is the intermediate equipment between OLT and CNU1, OCU1 can get the LLID (LLID1) of CNU1.
Meanwhile, the relevant MPCP protocol interaction message in CNU1 initialization procedure arrives OCU1 by specific RF port, and therefore OCU1 is identified and can be understood the RF port that CNU1 is corresponding by internal hardware, and then knows the mark RFID1 of the RF port that LLID1 is corresponding.
OCU1, by the LLID of CNU1 that obtains and the mark of the RF port of this CNU1 message interaction process, sets up the mapping relations information of the mark of LLID and RF port, i.e. the corresponding RFID1 of LLID1.
S302:OLT sends downlink message, in downlink message leading character with LLID1;
First the downlink message that S303:OLT sends is received by the light-receiving sending module of OCU1, then processes via the PON MAC of OCU1, and PON MAC searches the LLID of control module foundation and the mapping relations information of RFID, finds the corresponding RFID1 of LLID1;
S304:OCU1 mails to corresponding CNU1 by the message of corresponding LLID1 through RF1.
Complete the filtration repeating process of whole downlink message.
Embodiment 2:
As shown in Figure 4, in OCU, comprise a light-receiving sending module, multiple PON MAC, and multiple RF ports, PON MAC is corresponding one by one with RF port, and the CDN connecting by each RF port connects CNU, the sending method of downlink message in the photoelectricity hybrid system of present embodiment, comprising:
The S401:CNU1 initialization procedure that powered on, the control module of OCU is set up the mapping relations information of the mark of PON MAC1 and the mark of RF port in PON MAC1 by the initialization procedure of CNU1;
In initialization procedure, OLT is that CNU1 distributes unique LLID.Because OCU1 is the intermediate equipment between OLT and CNU1, OCU1 can get the LLID (LLID1) of CNU1.
Due to each PON MAC and RF port correspondence one by one, the downlink message that can ensure to enter PONMAC from hardware can only be by the RF port repeat corresponding with this PON MAC, or the up message from certain RF port can only be processed via the PON MAC corresponding with this RF port, therefore only need to carry out packet filtering by the LLID of CNU.LLID1 only can be obtained by PON MAC1.
S402:OLT sends downlink message, in downlink message leading character with LLID1;
First the downlink message that S403:OLT sends is received by the light-receiving sending module of OCU1, the mapping relations information of the LLID1 that then PON MAC1 sets up according to control module and the mark of PON MAC1 is filtered, PON MAC1, in the time determining that downlink message belongs to the downlink message self receiving, is transmitted to CDN1 by the RF1 port being connected by downlink message.
Because PON MAC1 is corresponding one by one on hardware with RFID1, therefore this downlink message forwards into CDN1 via RF1.OCU1 mails to corresponding CNU1 by the downlink message of corresponding LLID1 through RF1, completes the filtration repeating process of whole downlink message.
The same axle unit of a kind of light of present embodiment, comprising: light-receiving sending module, EPON media interviews control PON MAC and control module, and control module is connected with PON MAC, and PON MAC is also connected with multiple Coaxial distribution network network CDN, wherein:
Control module, for setting up coaxial network unit CNU and the light mapping relations information with axle unit OCU port, OCU port is the port of the OCU that is connected to of the CDN under CNU;
Light-receiving sending module, sends to the message of object CNU for receiving optical line terminal OLT, the message of reception is sent to PON MAC;
PON MAC, in the time receiving the message of light-receiving sending module transmission, according to the mapping relations information of CNU and OCU port, message is sent to the CDN under object CNU by the OCU port corresponding by object CNU.
As shown in Figure 5, OCU port is radio frequency port; The mapping relations information of the mark of the logical links label L LID that the mapping relations information of CNU and OCU port is CNU and the radio frequency port of OCU, the RF port of OCU is the RF port of the OCU of the CDN connection under CNU.
PON MAC, send to specifically for basis the LLID carrying in the message of object CNU, the mapping relations information of the mark of the LLID of inquiry object CNU and the RF port of OCU, obtain the mark of corresponding RF port, the mark of the RF port obtaining according to inquiry, sends to the CDN under object CNU by corresponding RF port by message.
As shown in Figure 6, PON MAC is multiple, and OCU port is RF port, and each PON MAC is connected with a RF port, and each RF port connects a CDN; The mapping relations information of the LLID that the mapping relations information of CNU and OCU port is CNU and the mark of PON MAC, PON MAC be with CNU under PON MAC corresponding to RF port that connect of CDN.
PON MAC, send to specifically for basis the LLID carrying in the message of object CNU, the mapping relations information of the LLID of inquiry object CNU and the mark of PON MAC, when the LLID carrying is corresponding with self mark, sends to the CDN under object CNU by message in message.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
This is only the preferred embodiments of the present invention above, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a sending method for downlink message in photoelectricity hybrid system, comprising:
Light is connected with multiple Coaxial distribution network network CDN with axle unit OCU, sets up the mapping relations information of coaxial network unit CNU and OCU port, and described OCU port is the port of the OCU that is connected to of the CDN under CNU;
Described OCU is in the time receiving optical line terminal OLT and send to the message of object CNU, and according to the described CNU setting up and the mapping relations information of OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU.
2. the method for claim 1, it is characterized in that, the mapping relations information of the mark of the logical links label L LID that the mapping relations information of described CNU and OCU port is described CNU and the radio frequency port of OCU, the RF port of described OCU is the RF port of the OCU of the CDN connection under described CNU.
3. method as claimed in claim 2, is characterized in that, according to the described CNU setting up and the mapping relations information of OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU, comprising:
Described in described OCU basis, send to the LLID carrying in the message of object CNU, inquire about the mapping relations information of the mark of the LLID of described object CNU and the RF port of OCU, obtain the mark of corresponding RF port, the mark of the RF port obtaining according to inquiry, sends to the CDN under object CNU by corresponding RF port by described message.
4. the method for claim 1, it is characterized in that, the mapping relations information of the mark of the EPON media interviews control PON MAC in LLID and OCU that the mapping relations information of described CNU and OCU port is described CNU, described PON MAC be with described CNU under PON MAC corresponding to RF port that connect of CDN.
5. method as claimed in claim 4, is characterized in that, according to the described CNU setting up and the mapping relations information of OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU, comprising:
Described in described OCU basis, send to the LLID carrying in the message of object CNU, inquire about the mapping relations information of the mark of the PON MAC in LLID and the OCU of described object CNU, know the mark of the PON MAC that described object CNU is corresponding, described message is sent to the CDN under object CNU by the PON MAC corresponding by described object CNU.
6. the same axle unit of light, comprising: light-receiving sending module, EPON media interviews control PON MAC and control module, and described control module is connected with described PON MAC, and described PONMAC is also connected with multiple Coaxial distribution network network CDN, wherein:
Described control module, for setting up coaxial network unit CNU and the light mapping relations information with axle unit OCU port, described OCU port is the port of the OCU that is connected to of the CDN under CNU;
Described light-receiving sending module, sends to the message of object CNU for receiving optical line terminal OLT, the message of reception is sent to described PON MAC;
Described PON MAC, in the time receiving the message of described light-receiving sending module transmission, according to the mapping relations information of described CNU and OCU port, described message is sent to the CDN under object CNU by the OCU port corresponding by object CNU.
7. the same axle unit of light as claimed in claim 6, is characterized in that:
Described OCU port is radio frequency port;
The mapping relations information of the mark of the logical links label L LID that the mapping relations information of described CNU and OCU port is described CNU and the radio frequency port of OCU, the RF port of described OCU is the RF port of the OCU of the CDN connection under described CNU.
8. the same axle unit of light as claimed in claim 7, is characterized in that:
Described PON MAC, specifically for sending to the LLID carrying in the message of object CNU described in basis, inquire about the mapping relations information of the mark of the LLID of described object CNU and the RF port of OCU, obtain the mark of corresponding RF port, the mark of the RF port obtaining according to inquiry, sends to the CDN under object CNU by corresponding RF port by described message.
9. the same axle unit of light as claimed in claim 6, is characterized in that:
Described PON MAC is multiple, and described OCU port is RF port, and each PON MAC is connected with a RF port, and each RF port connects a CDN;
The mapping relations information of the LLID that the mapping relations information of described CNU and OCU port is described CNU and the mark of PONMAC, described PON MAC be with described CNU under PON MAC corresponding to RF port that connect of CDN.
10. the same axle unit of light as claimed in claim 9, is characterized in that:
Described PON MAC, specifically for sending to the LLID carrying in the message of object CNU described in basis, inquire about the mapping relations information of the LLID of described object CNU and the mark of PON MAC, when the LLID carrying is corresponding with self mark, described message is sent to the CDN under object CNU in message.
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CN201310046367.2A CN103974151B (en) | 2013-02-05 | 2013-02-05 | The sending method and the same axle unit of light of downlink message in a kind of Opto-electronic system |
PCT/CN2013/082655 WO2014121600A1 (en) | 2013-02-05 | 2013-08-30 | Downlink message transmitting method in photo-electric mixed system and optical coaxial unit |
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CN201310046367.2A CN103974151B (en) | 2013-02-05 | 2013-02-05 | The sending method and the same axle unit of light of downlink message in a kind of Opto-electronic system |
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Cited By (2)
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CN106911701A (en) * | 2017-03-06 | 2017-06-30 | 北京电信规划设计院有限公司 | The method that content distribution is realized based on EPON |
WO2020135871A1 (en) * | 2018-12-29 | 2020-07-02 | 中兴通讯股份有限公司 | Optical line terminal-content delivery network implementation method and apparatus, and medium and network system |
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CN109728992B (en) * | 2018-11-27 | 2021-09-28 | 苏州盛科通信股份有限公司 | Method, device, storage medium and electronic device for distributing forwarding domain |
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US20030194241A1 (en) * | 2001-07-05 | 2003-10-16 | Wave7 Optics, Inc. | Method and system for providing a return data path for legacy terminals by using existing electrical waveguides of a structure |
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WO2020135871A1 (en) * | 2018-12-29 | 2020-07-02 | 中兴通讯股份有限公司 | Optical line terminal-content delivery network implementation method and apparatus, and medium and network system |
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CN103974151B (en) | 2019-02-12 |
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