CN102983913B - A kind of optical network unit and optical-fiber network - Google Patents
A kind of optical network unit and optical-fiber network Download PDFInfo
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- CN102983913B CN102983913B CN201210551649.3A CN201210551649A CN102983913B CN 102983913 B CN102983913 B CN 102983913B CN 201210551649 A CN201210551649 A CN 201210551649A CN 102983913 B CN102983913 B CN 102983913B
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Abstract
The invention discloses a kind of optical network unit and optical-fiber network, relate to the communication technology, at least one second line of a couplet EPON interface and the second line of a couplet EPON chip being connected each second line of a couplet EPON interface is respectively provided with in ONU, downlink data can be converted to light signal and be sent by second line of a couplet EPON interface by second line of a couplet EPON chip, and/or by second line of a couplet EPON interface to light signal be converted to upstream data, thus make this ONU can connect next stage PON, realize the transmission of light signal.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of optical network unit and optical-fiber network.
Background technology
At present, at 10GEPON(10 Gbit/s Ethernet Passive Optical Network, 10GGbit/s ethernet passive optical network), XG-PON(10-Gigabit-capable passive optical network, the EPON of 10 gigabits), EPON(Passive Optical Network Based on Ethernet, ethernet passive optical network) or GPON(Gigabit-capable Passive optical network, the EPON of gigabit) in network, ONU(Optical Network Unit, optical network unit) general direct second line of a couplet terminal, or connection switch, now ONU provides the termination of corresponding PON as PON terminal.
If need to build one deck PON again under ONU, then to need under ONU second line of a couplet OLT(Optical Line Terminal again, optical line terminal) and corresponding ONU build double-deck PON, as shown in Figure 1, thus add network element node, reduce the reliability of network, also increase the maintenance difficulties of network simultaneously.
Summary of the invention
The embodiment of the present invention provides a kind of optical network unit and optical-fiber network, to realize directly connecting next stage PON under ONU.
A kind of optical network unit, comprising:
First line of a couplet EPON interface, for being connected with higher level's EPON;
First line of a couplet EPON chip, connects described first line of a couplet EPON interface, for the light signal received being converted to downlink data and/or upstream data being converted to light signal;
At least one second line of a couplet EPON interface, for being connected with subordinate EPON, the total capacity of this at least one second line of a couplet EPON interface is identical with the total capacity of described first line of a couplet EPON interface;
At least one second line of a couplet EPON chip, connects each second line of a couplet EPON interface respectively, for downlink data being converted to light signal and/or the light signal received being converted to upstream data;
Exchange chip, connects described first line of a couplet EPON chip and each second line of a couplet EPON chip, for carrying out the two-way exchange of upstream data and downlink data.
A kind of optical-fiber network, comprises the optical network unit that the embodiment of the present invention provides;
The first line of a couplet EPON interface of optical network unit described at least one connects OLT.
The embodiment of the present invention provides a kind of optical network unit and optical-fiber network, at least one second line of a couplet EPON interface and the second line of a couplet EPON chip being connected each second line of a couplet EPON interface is respectively provided with in ONU, downlink data can be converted to light signal and be sent by second line of a couplet EPON interface by second line of a couplet EPON chip, and/or by second line of a couplet EPON interface to light signal be converted to upstream data, thus make this ONU can connect next stage PON, realize the transmission of light signal.
Accompanying drawing explanation
Fig. 1 is optical network structure schematic diagram in prior art;
The optical network unit structural representation that Fig. 2 provides for the embodiment of the present invention;
The optical network structure schematic diagram that Fig. 3 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of optical network unit and optical-fiber network, at least one second line of a couplet EPON interface and the second line of a couplet EPON chip being connected each second line of a couplet EPON interface is respectively provided with in ONU, downlink data can be converted to light signal and be sent by second line of a couplet EPON interface by second line of a couplet EPON chip, and/or by second line of a couplet EPON interface to light signal be converted to upstream data, thus make this ONU can connect next stage PON, realize the transmission of light signal.
As shown in Figure 2, the embodiment of the present invention provides a kind of optical network unit, comprising:
First line of a couplet EPON interface 201, for being connected with higher level's EPON;
First line of a couplet EPON chip 202, connects first line of a couplet EPON interface, for the light signal received being converted to downlink data and/or upstream data being converted to light signal;
At least one second line of a couplet EPON interface 203, for being connected with subordinate EPON, the total capacity of this at least one second line of a couplet EPON interface is identical with the total capacity of first line of a couplet EPON interface;
At least one second line of a couplet EPON chip 204, connects each second line of a couplet EPON interface respectively, for downlink data being converted to light signal and/or the light signal received being converted to upstream data;
Exchange chip 205, connects first line of a couplet EPON chip and each second line of a couplet EPON chip, for carrying out the two-way exchange of upstream data and downlink data.
Wherein, first line of a couplet EPON interface 201 can adopt 10GEPON, XG-PON, EPON, GPON port; no matter but adopt any one port; all need to consider that the total capacity needs of first line of a couplet EPON interface are consistent with the total capacity of second line of a couplet EPON interface, when realizing, need the PON defencive function considering upper united mouth equally.
First line of a couplet EPON chip 202 is for performing and the relevant PON physical layer protocol that terminates, and the signal being applied in PON physical layer is converted to be applied in Ethernet(ether) signal of physical layer, better when this first line of a couplet EPON chip 202 is consistent with first line of a couplet EPON interface 201 ability.
Accordingly, second line of a couplet EPON interface 203 also can adopt 10GEPON, XG-PON, EPON, GPON port.Adopt any one port no matter same, all need to consider that the total capacity needs of first line of a couplet EPON interface are consistent with the total capacity of second line of a couplet EPON interface.
Second line of a couplet EPON chip 204 for and the signal being applied in Ethernet physical layer is converted to the signal being applied in PON physical layer, better when this second line of a couplet EPON chip 204 is consistent with second line of a couplet EPON interface 203 ability.
Concrete, first line of a couplet EPON chip 202 specifically for:
The light signal received is converted to the signal of telecommunication, and selects to receive the signal of telecommunication sending to self, this part signal of telecommunication is converted to downlink data; And/or
The upstream data received is converted to the signal of telecommunication, and this signal of telecommunication is converted to light signal.
Now, after first line of a couplet EPON interface 201 receives light signal, by first line of a couplet EPON chip 202, the light signal received is converted to the signal of telecommunication, and selects to receive the signal of telecommunication sending to self, this part signal of telecommunication is converted to downlink data; When first line of a couplet EPON chip 202 receives the upstream data of exchange chip 205 transmission, the upstream data received is converted to the signal of telecommunication, and this signal of telecommunication is converted to light signal, send this light signal by first line of a couplet EPON interface 201.
Wherein, first line of a couplet EPON chip 202 can be selected to receive the signal of telecommunication sending to self according to LLID value, that is, first line of a couplet EPON chip selection receives the signal of telecommunication corresponding with self LLID value.
Accordingly, second line of a couplet EPON chip 204 specifically for:
From exchange chip downlink data receiving, and downlink data is converted to the signal of telecommunication, according to the target network element of downlink data, the LLID value of this signal of telecommunication is set, and this signal of telecommunication is converted to light signal; And/or
The light signal received is converted to the signal of telecommunication, and this signal of telecommunication is converted to upstream data.
Now, when second line of a couplet EPON chip 204 receives the downlink data of exchange chip 205 transmission, downlink data is converted to the signal of telecommunication, according to the target network element of downlink data, the LLID value of this signal of telecommunication is set, and this signal of telecommunication is converted to light signal, send this light signal by second line of a couplet EPON interface 203; After second line of a couplet EPON interface 203 receives light signal, by second line of a couplet EPON chip 204, the light signal received is converted to the signal of telecommunication, and this signal of telecommunication is converted to upstream data sends to exchange chip 205.
The upstream data that exchange chip 205 can be received from each second line of a couplet EPON chip by time division multiplexing mode transmission, and by addressing system by downlink data transmission extremely corresponding second line of a couplet EPON chip.
Accordingly, can the optical network unit that the embodiment of the present invention provides be applied in optical-fiber network, the embodiment of the present invention also provides a kind of optical-fiber network, comprise the optical network unit that the embodiment of the present invention provides, be called the first optical network unit, as shown in Figure 3, in this optical-fiber network, the first line of a couplet EPON interface of at least one the first optical network unit 301 connects OLT302.
The first line of a couplet EPON interface of the first optical network unit directly can connect OLT, now an OLT can only connect first optical network unit, the first line of a couplet EPON interface of the first optical network unit also can connect OLT by optical splitter 303, now, an OLT can connect multiple first optical network unit by optical splitter.
The second line of a couplet EPON interface output optical signal of the first optical network unit 301 that the embodiment of the present invention provides, therefore directly can connect the first line of a couplet EPON interface of the first optical network unit 301 in subordinate's EPON.
As shown in Figure 3, in this optical-fiber network, at least one second line of a couplet EPON interface of at least one the first optical network unit 301 connects the first line of a couplet EPON interface of the first optical network unit 301 in subordinate's EPON.
Certainly, at least one second line of a couplet EPON interface of at least one the first optical network unit directly can connect the first line of a couplet EPON interface of the first optical network unit 301 in subordinate's EPON, also can be connected the first line of a couplet EPON interface of the first optical network unit 301 in subordinate's EPON by optical splitter 303.
Further, can also comprise in this optical-fiber network: the second optical network unit 304 not comprising second line of a couplet EPON interface, the second line of a couplet EPON interface of direct connection first optical network unit 301, or connected the second line of a couplet EPON interface of the first optical network unit 301 by optical splitter 303, or connect OLT302 by optical splitter.
In optical-fiber network shown in Fig. 3, comprise an OLT302, this OLT302 connects one or more levels optical splitter 303, the first optical network unit 301 and the second optical network unit 304 is connected respectively by the output of this optical splitter 303, wherein, the second line of a couplet EPON interface of the first optical network unit 301 connects optical network unit 301 in next stage network and the second optical network unit 304 by optical splitter 303 again.
When the optical network unit provided by the embodiment of the present invention sets up optical-fiber network, if ONU that the embodiment of the present invention provides uses EPON port as second line of a couplet EPON interface 203, then the XG-PON port on an OLT can connect by optical splitter the ONU that 64 playscript with stage directions inventive embodiments provide; The EPON port of the ONU provided in each embodiment of the present invention can connect 32 EPONONU by optical splitter altogether.Now, 2048 EPON ONU can be connected under being equivalent to single XG-PON port.According to the principle of mean allocation, the ONU that each embodiment of the present invention provides can be evenly distributed to the downlink bandwidth of about 150Mbps, and the EPON ONU under each ONU provided in the embodiment of the present invention can be evenly distributed to the downlink bandwidth of about 4.5Mbps.
If ONU that the embodiment of the present invention provides uses GPON port as second line of a couplet EPON interface 203, then the XG-PON port on an OLT can connect by optical splitter the ONU that 64 playscript with stage directions inventive embodiments provide; The GPON port of the ONU provided in each embodiment of the present invention can connect 64 GPON ONT by optical splitter altogether.Now, 4096 GPON ONT can be connected under being equivalent to single XG-PON port.According to the principle of mean allocation, the ONU that each embodiment of the present invention provides can be evenly distributed to the downlink bandwidth of about 150Mbps, and the GPONONU under each ONU provided in the embodiment of the present invention can be evenly distributed to the downlink bandwidth of about 2.3Mbps.
The embodiment of the present invention provides a kind of optical network unit and optical-fiber network, at least one second line of a couplet EPON interface and the second line of a couplet EPON chip being connected each second line of a couplet EPON interface is respectively provided with in ONU, downlink data can be converted to light signal and be sent by second line of a couplet EPON interface by second line of a couplet EPON chip, and/or by second line of a couplet EPON interface to light signal be converted to upstream data, thus make this ONU can connect next stage PON, realize the transmission of light signal.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an optical network unit, is characterized in that, comprising:
First line of a couplet EPON interface, for being connected with higher level's EPON;
First line of a couplet EPON chip, connects described first line of a couplet EPON interface, for the light signal received being converted to downlink data and/or upstream data being converted to light signal;
At least one second line of a couplet EPON interface, for being connected with subordinate EPON, the total capacity of this at least one second line of a couplet EPON interface is identical with the total capacity of described first line of a couplet EPON interface;
At least one second line of a couplet EPON chip, connects each second line of a couplet EPON interface respectively, for downlink data being converted to light signal and/or the light signal received being converted to upstream data;
Exchange chip, connects described first line of a couplet EPON chip and each second line of a couplet EPON chip, for carrying out the two-way exchange of upstream data and downlink data.
2. optical network unit as claimed in claim 1, is characterized in that, described first line of a couplet EPON chip specifically for:
The light signal received being converted to the signal of telecommunication, and selecting to receive the signal of telecommunication sending to self, being converted to downlink data by sending to the signal of telecommunication of self; And/or
The upstream data received is converted to the signal of telecommunication, and this signal of telecommunication is converted to light signal.
3. optical network unit as claimed in claim 2, is characterized in that, described first line of a couplet EPON chip selection receives the signal of telecommunication sending to self, is specially:
Described first line of a couplet EPON chip selection receives the signal of telecommunication corresponding with self LLID value.
4. optical network unit as claimed in claim 1, is characterized in that, described second line of a couplet EPON chip specifically for:
From described exchange chip downlink data receiving, and downlink data is converted to the signal of telecommunication, according to the target network element of described downlink data, the LLID value of this signal of telecommunication is set, and this signal of telecommunication is converted to light signal; And/or
The light signal received is converted to the signal of telecommunication, and this signal of telecommunication is converted to upstream data.
5. optical network unit as claimed in claim 1, is characterized in that, described exchange chip specifically for:
By the upstream data that time division multiplexing mode transmission receives from each second line of a couplet EPON chip;
By addressing system by downlink data transmission extremely corresponding second line of a couplet EPON chip.
6. an optical-fiber network, is characterized in that, comprise as arbitrary in claim 1-5 as described in optical network unit;
The first line of a couplet EPON interface of optical network unit described at least one connects OLT.
7. optical-fiber network as claimed in claim 6, is characterized in that, the first line of a couplet EPON interface of optical network unit described at least one connects OLT, is specially:
The first line of a couplet EPON interface direct of optical network unit described at least one meets OLT in succession or connects OLT by optical splitter.
8. optical-fiber network as claimed in claim 6, is characterized in that, at least one second line of a couplet EPON interface of optical network unit described at least one connects the first line of a couplet EPON interface of subordinate's optical network unit in passive optical network.
9. optical-fiber network as claimed in claim 8, is characterized in that, at least one second line of a couplet EPON interface of optical network unit described at least one connects the first line of a couplet EPON interface of subordinate's optical network unit in passive optical network, is specially:
At least one second line of a couplet EPON interface direct of optical network unit described at least one connects the first line of a couplet EPON interface of subordinate's optical network unit in passive optical network in succession, or connects the first line of a couplet EPON interface of subordinate's optical network unit in passive optical network by optical splitter.
10. optical-fiber network as claimed in claim 6, is characterized in that, also comprise:
Do not comprise the optical network unit of second line of a couplet EPON interface, directly connect the second line of a couplet EPON interface of described optical network unit, or connected the second line of a couplet EPON interface of described optical network unit by optical splitter, or connect OLT by optical splitter.
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| CN201210551649.3A CN102983913B (en) | 2012-12-18 | 2012-12-18 | A kind of optical network unit and optical-fiber network |
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| CN201210551649.3A CN102983913B (en) | 2012-12-18 | 2012-12-18 | A kind of optical network unit and optical-fiber network |
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| CN101141410A (en) * | 2007-10-24 | 2008-03-12 | 中兴通讯股份有限公司 | Downlink flow control information transferring method in kilomega passive optical network system |
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| CN101489154A (en) * | 2008-01-15 | 2009-07-22 | 华为技术有限公司 | Method, system and device for passive optical network connection processing |
| CN101867411A (en) * | 2010-06-17 | 2010-10-20 | 中兴通讯股份有限公司 | Method, system and device for realizing passive optical network optical fiber protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101291181B (en) * | 2007-04-19 | 2012-03-21 | 株式会社日立制作所 | Expandable passive optical network equipment having optical network unit with changeable mode |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141410A (en) * | 2007-10-24 | 2008-03-12 | 中兴通讯股份有限公司 | Downlink flow control information transferring method in kilomega passive optical network system |
| CN101489154A (en) * | 2008-01-15 | 2009-07-22 | 华为技术有限公司 | Method, system and device for passive optical network connection processing |
| CN101257452A (en) * | 2008-04-16 | 2008-09-03 | 中兴通讯股份有限公司 | Method for ether passive optical network access equipment to transmit downlink data packet |
| CN101867411A (en) * | 2010-06-17 | 2010-10-20 | 中兴通讯股份有限公司 | Method, system and device for realizing passive optical network optical fiber protection |
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