CN101895344A - Method and system for combining passive optical network and mobile network - Google Patents
Method and system for combining passive optical network and mobile network Download PDFInfo
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Abstract
The invention relates to a method and a system for combining a passive optical network and a mobile network. The method comprises the following steps that: 1, the base band of the mobile network is partially connected to an upper connector of an optical line terminal of the passive optical network; 2, an optical network unit of the passive optical network receives a downlink optical signal and converts the downlink optical signal into an electric signal for processing, and the processed electric signal is transmitted by an antenna of the optical network unit; and 3, the optical network unit receives an uplink signal from the antenna and processes the uplink signal, and the processed uplink signal is converted into the optical signal and then transmitted by the passive optical network to the base band part of the mobile network. The system of the invention has the advantages of saving network construction cost and lowering network cabling complexity.
Description
Technical field
The present invention relates to the communications field, relate in particular to the system and method for the middle ONU (optical network unit) of a kind of fusion PON (EPON) and mobile network's radio frequency part.
Background technology
Along with the reorganization of domestic operator, China Telecom and CHINAUNICOM have all become full-service operator, and the fusion fixing and mobile network has become a main trend of current operator.Present three aspects of the fusion of network, backbone network aspect, core network aspect and access network aspect.Wherein, the fusion of backbone network and core network is relative simple, because on key and core network, IP over WDM (wavelength division multiplexing) technical scheme becomes a reality.But,, do not have substantial progress in the access network aspect.At present, realize fixed network and present two aspects of mobile network's fusion: the one, aspect indoor little covering, add the mode that WiFi WLAN (wireless local area network) or fixed network add Femtocell (femtocell) by fixed network and realize so-called fixed network and mobile network's fusion, use the fixing passback technology that inserts as wireless coverage; The 2nd, between base station controller and base station, utilize EPON/GPON (ethernet passive optical network/Gigabit Passive Optical Network) technology to realize that PON takes into account base station side big customer's access simultaneously.Adopt the defective of PON mode that two aspects are arranged, the one, the security requirement between base station and the base station controller is very high, but the tree group network structure of PON is difficult to adapt to its security requirement; The 2nd, be subject to site, base station resource, its big customer inserts limited.
The maturation of PON technology impels fixed wide band inserting technology also to obtain development at full speed, be illustrated in fig. 1 shown below, by OLT (Optical Line Terminal, optical line terminal) by ODN (OpticalDistribution Network, optical distribution) can followingly hang 16 or 32 ONU (OpticalNetwork Unit, optical network unit), can realize FTTH/FTTB (Fiber to the home/Fiber-To-The-Building) or FTTC (Fiber To The Curb) according to the difference of scene, thereby realize multi-form broadband access, its downlink and uplink interfaces adopt the GE/FE interface of standard, and speed all can reach 1.25G.Same BAS of the other end of OLT (Broadband Access Server, BAS Broadband Access Server) and NGN (Next GenerationNetwork, next generation network).
The ONU of close user side can provide voice-and-data or big customer's access simultaneously, and the scope of application of ONU has determined PON to realize the difference of FTTH/FTTB/FTTC, no matter ONU is to the roadside, still to the building, it all need be powered separately.
ONU structure in the PON network as shown in Figure 2.ONU is connected with terminal with ODN.ONU comprise have optical transceiver, Layer 2 data processing module and voice and data processing module.
The function of optical transceiver realizes opto-electronic conversion exactly, and the light signal that is about to receive changes the signal of telecommunication into, is given to the Layer 2 data processing module and handles; Electrical information after the Layer 2 data resume module is converted to light signal to send.
The function of Layer 2 data processing module is to realize Layer 2 data exchange and the function of dividing VLAN, and down direction from the data that receive, according to MAC Address, is accepted one's own packet; Up direction according to the Service Properties grade, is passed to optical transceiver after user's data divided VLAN.
The function of voice-and-data processing module, voice aspect realize that the voice of VOIP or TDM insert, and the data processing aspect realizes the access processing of wideband data.
As shown in Figure 3, connect by optical fiber between cellular basestation and the optical fiber repeater, as shown in Figure 4, connect by optical fiber between BBU (Base Band Unit) and RRU (Remote Radio Unit) or the optical fiber repeater.Fiber segment has cross-connecting box, is trunk between cross-connecting box and cellular basestation or BBU, is distribution between cross-connecting box and optical fiber repeater or the RRU.
Though RRU and optical fiber repeater can zoom out tens kilometers, in real network is disposed, consider that RRU and optical fiber repeater generally come centrally connected power supply by machine room, so its service range is all within hundred meters of BBU.Scene for surpassing 100m all needs to RRU and the independent direct current supply of optical fiber repeater, and this scheme has increased investment undoubtedly.
The structure of RRU or optical fiber repeater as shown in Figure 5.RRU or optical fiber repeater comprise optical transceiver, encoding and decoding and baseband processor, upconverter, low-converter, duplexer and antenna.
The function of optical transceiver realizes opto-electronic conversion exactly, and the light signal that is about to receive changes the signal of telecommunication into, is given to decoding and baseband processor; Data after decoding and the baseband processor are converted to light signal to send.
Encoding and decoding and baseband processor: down direction, after the data decode that receives, carry out the processing of baseband signal; Up direction, will from the signal after the upconverter encode and Base-Band Processing after pass to optical transceiver.
Upconverter: with the frequency translation of up radiofrequency signal is base-band signal frequency
Low-converter: downgoing baseband signal frequency conversion to rf frequency is passed to duplexer
Duplexer: accept and transmit up-downgoing both direction signal
PON inserted and realized indoor with distributed base station/optical fiber repeater or special screne when covering solving fixed broadband in the past, all do not consider the mode that fixed network and mobile network are merged, just consider the shared of transmission and be linked into sharing of building end power supply, cause passive in the waste of investment and the operation.
Summary of the invention
In order to solve above-mentioned technical problem, a kind of converging fixed network and mobile network's method and system are provided, can save network construction cost, reduce network layout.
The invention discloses a kind of combining passive optical network and mobile network's method, comprising:
Step 1, described mobile network's baseband portion are connected in the last connecting port of the optical line terminal of described EPON;
Step 2, the optical network unit of described EPON receives downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, with the antenna emission of the signal of telecommunication after handling from described optical network unit;
Step 3, described optical network unit receives upward signal from antenna, handles described upward signal, and the upward signal after handling is converted to light signal sends to described mobile network by EPON baseband portion.
Described step 2 further is,
Step 21, the optical transceiver of described optical network unit receives downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication;
Step 22, the data processor of described optical network unit carries out data link layer deals to the data that receive;
Step 23, the decoding of described optical network unit and baseband processor are carried out Base-Band Processing to data;
Step 24, the upconversion process device of described optical network unit with Base-Band Processing after signal frequency conversion to transmit frequency band, carry out power amplification after handling, launch by antenna through duplexer.
Described step 3 further is,
Step 31, described optical network unit receive upward signal by antenna, the down-converted device of described optical network unit receives described upward signal through duplexer, and described upward signal is carried out the low noise power amplification, is downconverted to base band after described upward signal is handled;
Step 32, the decoding of described optical network unit and baseband processor are carried out Base-Band Processing to data;
Step 33, the data processor of the described optical network unit data after to Base-Band Processing are carried out data link layer deals;
Step 34, the optical transceiver of described optical network unit will be handled the back upward signal and be converted to light signal and transmission.
Described step 22 further is,
Step 41, the data processor of described optical network unit restore the packet of described mobile network's baseband portion transmission from reception information.
Described step 33 further is,
Step 51, the data processor of described optical network unit are carried out VLAN to data and are divided.
Two described optical network units of the corresponding the same area of a described mobile network's baseband portion.
Described two optical network units adopt with the frequency working method, think that carrying out multiple-input and multiple-output provides the basis.
Described two optical network units adopt different working methods frequently, think that carrying out two carrier waves provides the basis.
The invention also discloses a kind of combining passive optical network and mobile network's system, system comprises: mobile network's baseband portion and EPON, and described EPON comprises optical line terminal and optical network unit,
Described mobile network's baseband portion is connected in the last connecting port of the optical line terminal of described EPON;
Described optical network unit has antenna,
Described optical network unit is used to receive downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, with the antenna emission of the signal of telecommunication after handling from described optical network unit; Also be used for receiving upward signal, handle described upward signal, the upward signal after handling is converted to light signal sends to described mobile network by EPON baseband portion from antenna.
Described optical network unit further comprises optical transceiver, data processor, decoding and baseband processor, upconversion process device, duplexer;
Described optical transceiver is used to receive downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication;
Described data processor is used to receive the described signal of telecommunication, and data are carried out data link layer deals, and the data-signal after handling is sent to described decoding and baseband processor;
Described decoding and baseband processor are used for data are carried out Base-Band Processing;
Described upconversion process device is used for signal frequency conversion after the Base-Band Processing carrying out power amplification to transmit frequency band after handling, and is launched by described antenna through described duplexer.
Described optical network unit further comprises optical transceiver, data processor, decoding and baseband processor, down-converted device, duplexer;
Described down-converted device is used for carrying out the low noise power amplification with received the upward signal that receives through duplexer by antenna, is downconverted to base band after described upward signal is handled;
Described decoding and baseband processor are used for the data that are downconverted to base band are carried out Base-Band Processing;
Described data processor is used for the data after the Base-Band Processing are carried out data link layer deals;
Described optical transceiver is used for the upward signal after the data link layer deals being converted to light signal and sending.
Described data processor is further used for restoring the packet that described mobile network's baseband portion sends from reception information.
Described data processor is further used for that data are carried out VLAN and divides.
Two described optical network units of the corresponding the same area of a described mobile network's baseband portion.
Described two optical network units adopt with the frequency working method, think that carrying out multiple-input and multiple-output provides the basis.
Described two optical network units adopt different working methods frequently, think that carrying out two carrier waves provides the basis.
Beneficial effect of the present invention is, realizes that fixed broadband inserts and effective fusion of wireless coverage; Avoid the dual construction of ONU and RRU or optical fiber repeater, saved equipment investment; Avoid ONU and the fault point that RRU or optical fiber repeater connect, improved system reliability; Reduced because ONU and RRU or optical fiber repeater are installed the requirement to the space concentratedly; And reduced the loss of power.
Description of drawings
Fig. 1 is a prior art PON network structure
Fig. 2 is the structure chart of ONU in the prior art PON network;
Fig. 3 is the mode schematic diagram of available technology adopting cellular basestation and optical fiber repeater;
Fig. 4 is the schematic diagram that available technology adopting BBU adds the mode of RRU or optical fiber repeater;
Fig. 5 is the structure chart of RRU or optical fiber repeater;
Fig. 6 is the structure chart of system of the present invention one embodiment;
Fig. 7 is the structure chart of ONU of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
A kind of combining passive optical network and mobile network's system comprises: mobile network's baseband portion and EPON, and described EPON comprises optical line terminal and optical network unit,
Described mobile network's baseband portion is connected in the last connecting port of the optical line terminal of described EPON;
Described optical network unit has antenna,
Described optical network unit is used to receive downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, with the antenna emission of the signal of telecommunication after handling from described optical network unit; Also be used for receiving upward signal, handle described upward signal, the upward signal after handling is converted to light signal sends to described mobile network by EPON baseband portion from antenna.
The structure of system of the present invention one embodiment as shown in Figure 6.
System comprises mobile network's baseband portion 601 and EPON, and EPON comprises OLT602, ODN603 and the ONU604 with fusion function.
Baseband portion 601 is connected in the last connecting port of OLT602.ODN603 tells multichannel with light path, and ONU604 is connected in and tells on the light path.
ONU604 has antenna,
ONU604 is used to receive downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, and the signal of telecommunication after handling is launched from antenna; Also be used for receiving upward signal, handle described upward signal, the upward signal after handling is converted to light signal sends to baseband portion 601 by EPON from antenna.
The also same NGN of the last connecting port of OLT (next generation network) is connected with BAS (BAS Broadband Access Server).
ODN603 also connects with as shown in Figure 2 ONU in the prior art, so that the fixed network business to be provided.
The structure of ONU604 as shown in Figure 7.
ONU604 further comprises optical transceiver 701, data processor 702, decoding and baseband processor 703, upconversion process device 704, down-converted device 705, duplexer 706.
Optical transceiver 701 is used to receive downlink optical signal, and this downlink optical signal is converted to the signal of telecommunication.
In system of the present invention, OLT602 has carried out the processing of two layers of transparent transmission when inserting the data of baseband portion 601, and data processor 702 need be sent in decoding and the baseband processor 703 and handle through two layers of former data of handling recovery baseband portion 601 again.
Decoding and baseband processor 703 are used for data are carried out Base-Band Processing.
Down-converted device 705 is used for carrying out the low noise power amplification with received the upward signal that receives through duplexer 706 by antenna, is downconverted to base band after this upward signal is handled.
Decoding and baseband processor 703 also are used for the data that are downconverted to base band are carried out Base-Band Processing.
Optical transceiver 701 also is used for the upward signal after the data link layer deals being converted to light signal and sending.
Two ONU604 of baseband portion 701 corresponding the same areas of a mobile network.
These two ONU604 adopt with the frequency working method, think that carrying out multiple-input and multiple-output provides the basis; Perhaps these two ONU604 adopt different working methods frequently, think that carrying out two carrier waves provides the basis.
The inventive method is as described below.
Step 100, mobile network's baseband portion are connected in the last connecting port of the optical line terminal of EPON.
Step 200, the optical network unit of EPON receives downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, with the antenna emission of the signal of telecommunication after handling from described optical network unit.
Step 300, optical network unit receives upward signal from antenna, handles described upward signal, and the upward signal after handling is converted to light signal sends to described mobile network by EPON baseband portion.
Described step 200 further is,
Step 210, the optical transceiver of optical network unit receives downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication.
Step 220, the data processor of described optical network unit carries out data link layer deals to the data that receive.
The data processor of optical network unit restores the packet of described mobile network's baseband portion transmission from reception information.
Step 230, the decoding of described optical network unit and baseband processor are carried out Base-Band Processing to data.
Step 240, the upconversion process device of described optical network unit with Base-Band Processing after signal frequency conversion to transmit frequency band, carry out power amplification after handling, launch by antenna through duplexer.
Described step 300 further is,
Step 310, optical network unit receive upward signal by antenna, the down-converted device of optical network unit receives described upward signal through duplexer, and described upward signal is carried out the low noise power amplification, is downconverted to base band after described upward signal is handled.
Step 320, the decoding of optical network unit and baseband processor are carried out Base-Band Processing to data.
Step 330, the data processor of the optical network unit data after to Base-Band Processing are carried out data link layer deals.
The data processor of described optical network unit carries out VLAN to data and divides.
Step 340, the optical transceiver of described optical network unit will be handled the back upward signal and be converted to light signal and transmission.
Two described optical network units of the corresponding the same area of a mobile network's baseband portion among the present invention.Two optical network units adopt with the frequency working method, think that carrying out multiple-input and multiple-output provides the basis, and perhaps described two optical network units adopt different working methods frequently, think that carrying out pair carrier waves provides the basis.
Those skilled in the art can also carry out various modifications to above content under the condition that does not break away from the definite the spirit and scope of the present invention of claims.Therefore scope of the present invention is not limited in above explanation, but determine by the scope of claims.
Claims (16)
1. combining passive optical network and mobile network's method is characterized in that, comprising:
Step 1, described mobile network's baseband portion are connected in the last connecting port of the optical line terminal of described EPON;
Step 2, the optical network unit of described EPON receives downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, with the antenna emission of the signal of telecommunication after handling from described optical network unit;
Step 3, described optical network unit receives upward signal from antenna, handles described upward signal, and the upward signal after handling is converted to light signal sends to described mobile network by EPON baseband portion.
2. combining passive optical network as claimed in claim 1 and mobile network's method is characterized in that, described step 2 further is,
Step 21, the optical transceiver of described optical network unit receives downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication;
Step 22, the data processor of described optical network unit carries out data link layer deals to the data that receive;
Step 23, the decoding of described optical network unit and baseband processor are carried out Base-Band Processing to data;
Step 24, the upconversion process device of described optical network unit with Base-Band Processing after signal frequency conversion to transmit frequency band, carry out power amplification after handling, launch by antenna through duplexer.
3. combining passive optical network as claimed in claim 1 and mobile network's method is characterized in that, described step 3 further is,
Step 31, described optical network unit receive upward signal by antenna, the down-converted device of described optical network unit receives described upward signal through duplexer, and described upward signal is carried out the low noise power amplification, is downconverted to base band after described upward signal is handled;
Step 32, the decoding of described optical network unit and baseband processor are carried out Base-Band Processing to data;
Step 33, the data processor of the described optical network unit data after to Base-Band Processing are carried out data link layer deals;
Step 34, the optical transceiver of described optical network unit will be handled the back upward signal and be converted to light signal and transmission.
4. combining passive optical network as claimed in claim 2 and mobile network's method is characterized in that, described step 22 further is,
Step 41, the data processor of described optical network unit restore the packet of described mobile network's baseband portion transmission from reception information.
5. combining passive optical network as claimed in claim 3 and mobile network's method is characterized in that, described step 33 further is,
Step 51, the data processor of described optical network unit are carried out VLAN to data and are divided.
6. combining passive optical network as claimed in claim 1 and mobile network's method is characterized in that,
Two described optical network units of the corresponding the same area of a described mobile network's baseband portion.
7. combining passive optical network as claimed in claim 6 and mobile network's method is characterized in that,
Described two optical network units adopt with the frequency working method, think that carrying out multiple-input and multiple-output provides the basis.
8. combining passive optical network as claimed in claim 6 and mobile network's method is characterized in that,
Described two optical network units adopt different working methods frequently, think that carrying out two carrier waves provides the basis.
9. combining passive optical network and mobile network's system is characterized in that system comprises: mobile network's baseband portion and EPON, and described EPON comprises optical line terminal and optical network unit,
Described mobile network's baseband portion is connected in the last connecting port of the optical line terminal of described EPON;
Described optical network unit has antenna,
Described optical network unit is used to receive downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication, handles the described signal of telecommunication, with the antenna emission of the signal of telecommunication after handling from described optical network unit; Also be used for receiving upward signal, handle described upward signal, the upward signal after handling is converted to light signal sends to described mobile network by EPON baseband portion from antenna.
10. combining passive optical network as claimed in claim 9 and mobile network's system is characterized in that, described optical network unit further comprises optical transceiver, data processor, decoding and baseband processor, upconversion process device, duplexer;
Described optical transceiver is used to receive downlink optical signal, and described downlink optical signal is converted to the signal of telecommunication;
Described data processor is used to receive the described signal of telecommunication, and data are carried out data link layer deals, and the data-signal after handling is sent to described decoding and baseband processor;
Described decoding and baseband processor are used for data are carried out Base-Band Processing;
Described upconversion process device is used for signal frequency conversion after the Base-Band Processing carrying out power amplification to transmit frequency band after handling, and is launched by described antenna through described duplexer.
11. combining passive optical network as claimed in claim 9 and mobile network's system is characterized in that, described optical network unit further comprises optical transceiver, data processor, decoding and baseband processor, down-converted device, duplexer;
Described down-converted device is used for carrying out the low noise power amplification with received the upward signal that receives through duplexer by antenna, is downconverted to base band after described upward signal is handled;
Described decoding and baseband processor are used for the data that are downconverted to base band are carried out Base-Band Processing;
Described data processor is used for the data after the Base-Band Processing are carried out data link layer deals;
Described optical transceiver is used for the upward signal after the data link layer deals being converted to light signal and sending.
12. combining passive optical network as claimed in claim 10 and mobile network's system is characterized in that, described data processor is further used for restoring the packet that described mobile network's baseband portion sends from reception information.
13. combining passive optical network as claimed in claim 11 and mobile network's system is characterized in that, described data processor is further used for that data are carried out VLAN and divides.
14. combining passive optical network as claimed in claim 9 and mobile network's system is characterized in that,
Two described optical network units of the corresponding the same area of a described mobile network's baseband portion.
15. combining passive optical network as claimed in claim 14 and mobile network's system is characterized in that,
Described two optical network units adopt with the frequency working method, think that carrying out multiple-input and multiple-output provides the basis.
16. combining passive optical network as claimed in claim 14 and mobile network's system is characterized in that,
Described two optical network units adopt different working methods frequently, think that carrying out two carrier waves provides the basis.
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| CN104065413A (en) * | 2014-07-10 | 2014-09-24 | 中邮科通信技术股份有限公司 | Digital multi-medium transmission to-the-home covering system |
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