CN101808255A - Access terminal OLT device with integration of EPON, WiMAX and WiFi and access method - Google Patents
Access terminal OLT device with integration of EPON, WiMAX and WiFi and access method Download PDFInfo
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Abstract
The invention provides an access terminal OLT device with integration of EPON, WiMAX and WiFi and an access method, and the OLT mainly comprises an EPON data processing card, a radio frequency signal processing card, a frequency multiplexing/demultiplexing module, a light transceiving module and other components. The access with integration of EPON digital baseband signals and WiMAX and WiFi radio frequency signals is completed by utilizing the frequency division multiplexing. The broadband access for regions with service wire resources is mainly carried out by utilizing ADSL, EoC and other technologies through an ONU device of an EPON. The broadband access for the regions which have no service wire resources, but are in complex terrain or a small number of access people and are further incapable of meeting the requirement on the laying cost is carried out by using the WiMa* or WiFi wireless transmission technology. The wireless access technology can also be taken as the emergency communication way for cable access, thereby realizing the seamless coverage of the whole access region. The access terminal OLT device and the access method can provide the high-speed broadband access for all users within the range of 20km, lead the optical fiber broadband access way and the wireless broadband access way to complement each other and achieve the largest coverage range and the optical access efficiency.
Description
Technical field
The present invention relates to the processing method that a kind of optical fiber and wireless fusion insert, relate in particular to the terminal OLT device that technological incorporation such as a kind of EPON of realization, WiMAX, WiFi insert.
Background technology
Optical fiber inserts and wireless access is two kinds of cutting edge technologies that have now in the broadband access technology, ethernet passive optical network EPON (Ethernet Passive Optical Network), and technology can provide the access bandwidth of 1.25Gbit/s for the user in the 20km scope.WiMAX (World Interoperability for MicrowaveAccess) is a kind of wireless MAN access technology, and the wireless access bandwidth of 70Mbit/s can be provided for the user in the number kilometer range.WiFi (Wireless Fidelity) then is a kind of wireless local area network technology, for the user provides in hundred meters scopes, and the wireless access of 11Mbit/s.Existing producer all is absorbed in wherein a certain scheme, can't provide solution completely for the user.
Summary of the invention
The object of the present invention is to provide a kind of EPON and WiMAX, WiFi to merge and insert terminal OLT device and cut-in method.
The present invention seeks to realize in the following manner, EPON and WiMAX, WiFi merge the terminal OLT device that inserts, be provided with in comprising a plurality of grooves position casing, be fixed in EPON data processing card, radiofrequency signal transaction card, channeling/demultiplexing module and optical transceiver module on the casing groove position.
In the described system, the EPON data processing card is responsible for the Ethernet framing of downlink data and is handled the processing of the management of user side ONU and up EPON data.The radiofrequency signal transaction card is responsible for finishing the protocol processes of WiMAX and two kinds of wireless access technologys of WiFi and is the specific transmission frequency of each base station assigns of OLT management.Channeling/demultiplexing module is finished the channeling of descending transmission signal and the demultiplexing of up received signal.Optical transceiver module is finished the electric light conversion of downlink electrical signal, utilizes optical fiber to carry out the opto-electronic conversion of descending transmission and uplink optical signal, further handles to send into channeling/demultiplexing module.
A kind of EPON and WiMAX, WiFi merge the cut-in method that inserts terminal OLT device, adopt the mode of frequency division multiplexing to finish, utilize the mode of sub-carrier modulation to be carried on the downstream wavelength of optical transceiver module 1550nm based on the 1.25Gbit/s digital baseband signal of EPON host-host protocol and multiplexing based on the radiofrequency signal of WiMAX, WiFi standard.
User side at Access Network, the wireless access base station of WiMAX, WiFi and the ONU of EPON integrate, to reduce the complexity of equipment cost and network management, for downlink business, ONU finishes the opto-electronic conversion of downstream signal, obtains digital baseband signal by frequency filtering, and filters out the EPON frame that belongs to this ONU, filter out the special frequency channel signal that OLT distributes to this base station by the wireless base station, and utilize frequency converter to obtain the base station and insert the frequency that the user carries out radio frequency transmission to terminal.
The user side of Access Network, for the uplink service of wired access, ONU is packaged into the EPON frame to it, is carried on the 1310nm wavelength with the baseband signal form by the OLT distributed time slot to send.For the upward signal of wireless access, the base station is carried out frequency conversion according to the special frequency channel that OLT distributes to it, carries out uplink with the form modulation 1310nm optical wavelength of subcarrier.
At the user side that merges Access Network, the ONU of wireless access base station and EPON can integrate, to reduce the complexity of equipment cost and network management.According to the different wireless access way of the different choice of location of ONU.For the area (FTTB) of realizing that Fiber To The Building, can adopt the WiFi wireless access technology.And for Fiber To The Curb (FTTC) or the area of FTTP net (FTTP), the suitable WiMAX wireless access that adopts.ONU can also adopt technology such as ADSL or EoC in addition, makes full use of service wire resources such as existing telephone and cable TV.Wireless access ways such as WiMAX, WiFi can be used as the emergency communication of wired access and realize inserting regional seamless covering at this moment.
Excellent effect of the present invention is: can provide high-speed wideband to insert for all users in the 20km scope, make broadband access waies such as EPON and WiMAX, WiFi have complementary advantages, reach maximum user's coverage and optimum access efficiency.The user can select EPON or technology such as WiMAX, WiFi to carry out broadband access according to actual conditions.
Description of drawings
Fig. 1 is the terminal OLT device schematic diagram that EPON and wireless fusion insert.
Fig. 2 is based on the frequency division multiplexing schematic diagram of subcarrier.
Fig. 3 is the application schematic diagram of OLT equipment in network that EPON and wireless fusion insert.
Embodiment
As shown in Figure 1, a kind of EPON and WiMAX, WiFi wireless technology of realizing merges the terminal OLT device that inserts, be provided with a plurality of grooves position in this equipment, and be fixed in EPON data processing card, radiofrequency signal transaction card, channeling/demultiplexing module and optical transceiver module on the groove position.
Described system EPON data processing card is responsible for the Ethernet framing of downlink data and is handled the processing of the management of user side ONU and up EPON data.The radiofrequency signal transaction card is responsible for finishing the protocol processes of WiMAX and two kinds of wireless access technologys of WiFi and for each wireless base station of OLT management distributing specific transmission frequency.Channeling/demultiplexing module is finished the channeling of descending transmission signal and the demultiplexing of up received signal.Optical transceiver module is finished the electric light conversion of downlink electrical signal, utilizes optical fiber to carry out the opto-electronic conversion of descending transmission and upward signal, further handles to send into channeling/demultiplexing module.
At the user side that merges Access Network, the ONU of wireless access base station and EPON can integrate, to reduce the complexity of equipment cost and network management.According to the different wireless access way of the different choice of location of ONU.For the area (FTTB) of realizing that Fiber To The Building, can adopt the WiFi wireless access technology.And for Fiber To The Curb (FTTC) or the area of FTTP net (FTTP), the suitable WiMAX wireless access that adopts.ONU can also adopt technology such as DSL or EOC in addition, makes full use of service wire resources such as existing telephone and cable TV.Wireless access way can be used as the emergency communication of wired access and realized inserting regional seamless covering this moment.
As shown in Figure 2, at the OLT place, utilize the frequency division multiplexing of subcarrier to finish multiplexing based on the digital baseband signal of EPON frame and WiMAX, WiFi radiofrequency signal.OLT adopts time-multiplexed mode to finish the transmission of each EPON frame for each ONU of its management distributes corresponding time slot, and total speed is 1.25Gbit/s.OLT is each WiMAX, the WiFi wireless base station of its management, distributes specific frequency range for it in subcarrier.
As shown in Figure 3, the OLT equipment that EPON and wireless fusion insert is in the access point of metropolitan area network, the core position of broadband access in whole network.It provides EPON and wireless two kinds of access waies simultaneously.For user based on wired access, at the ONU place of user side, filter the digital baseband signal in the subcarrier, i.e. EPON frame, and then utilize the ether protocol filtering to go out to belong to the specific EPON frame of specific ONU.Utilize EoC (Ethernetover Cable) technology afterwards, carry out service access, perhaps utilize the DSL technology, carry out service access by telephone wire by the coaxial cable resource of cable TV.
For WiMAX and WiFi wireless access base station, insert side the user, at first utilize filter to finish to belong to the filtration of self frequency range, utilize frequency converter that the frequency of wireless transmission is carried out in signal frequency conversion to WiMAX or WiFi base station afterwards, finish the wireless access of miscellaneous service.
Embodiment
Realization EPON that the present invention proposes and wireless technology merge the OLT equipment that inserts, and are in charge of ONU equipment and 10 WiMAX base stations and 10 WiFi base stations of 32 user sides at local side.Downstream rate based on the digital baseband signal of EPON agreement is 1.25Gbit/s, the Frame of 32 ONU through the time decomposition multiplex after, average access rate is approximately 30Mbit/s.For the radiofrequency signal that belongs to 10 WiMAX base stations and 10 WiFi base stations, OLT utilizes the frequency converter in the radio frequency processing card to be the specific frequency range of each base station assigns.For example being the transmission band of No. 1 WiMAX base station assigns 2.5GHz, is transmission band of No. 6 WiFi base station assigns 6GHz etc.Each frequency range is 0.5GHz at interval, is 20 wireless base station allocation of transmission bandwidth, approximately needs the bandwidth resources of 22GHz.2.5GHz the radiofrequency signal of～22GHz with finish frequency division multiplexing based on the 1.25Gbit/s digital baseband signal of EPON, remove modulated light signal as subcarrier, finish the transmission of OLT equipment downlink business.
Insert side the user, ONU equipment is at first finished the opto-electronic conversion of downstream signal, utilizes filter to obtain the digital baseband signal of 1.25Gbit/s, utilizes the ether protocol filtering to go out to belong to the EPON frame of this ONU afterwards.According to residing position of ONU and existing service wire resource, select the corresponding line access mode that has.Can directly adopt local area network technology, utilize twisted-pair feeder to finish the service access of ONU to user terminal.Perhaps adopt the DSL technology, utilize telephone wire to finish access, also can adopt the EoC technology, utilize the coaxial cable resource to finish service access.
And, utilize filter to obtain belonging to the transmission signals of this base station equally for the wireless base station.For example above-mentioned No. 1 WiMAX base station, finish the opto-electronic conversion of receiving optical signals at ONU equipment after, utilize the filter of centre frequency for 2.5GHz, filter out the radiofrequency signal that belongs to this base station.Utilize frequency converter to obtain the radiofrequency signal that wireless transmission is carried out in this base station afterwards again, suppose that here the unification of WiMAX base station utilizes 5.6GHz to carry out the signal emission.And, utilize centre frequency to obtain belonging to the radiofrequency signal of this base station for the filter of 6GHz for No. 6 WiFi base stations, utilize frequency converter to obtain the 2.4GHz radiofrequency signal that wireless transmission is carried out in the WiFi base station equally again.
The handling process of uplink service is similar, and for the EPON data, ONU carries out the transmission of uplink service according to the particular time-slot that OLT distributes.After each wireless base station utilizes operating frequency to receive user's upward signal, utilize frequency converter to obtain the radiofrequency signal of OLT for the special frequency channel of this base station assigns, this radiofrequency signal is finished electric light conversion and up transmission at the ONU place that links to each other with the base station with the form of subcarrier.OLT equipment receives upward signal, at first carries out opto-electronic conversion, utilizes the frequency demodulation multiplexer to finish the demultiplexing of EPON digital baseband signal and each radio frequency band signal then, sends into corresponding data processing card respectively, finishes further processing.
Claims (4)
1. an EPON and WiMAX, WiFi merge and insert terminal OLT device, it is characterized in that: be provided with in comprising a plurality of grooves position casing, be fixed in EPON data processing card, radiofrequency signal transaction card, channeling/demultiplexing module and optical transceiver module assembly on the casing groove position, the second line of a couplet interface of this OLT equipment be one based on wavelength-division
Multiplexing up/descending optical interface, last connecting port is based on the gigabit ether interface of IP;
The EPON data processing card is responsible for the Ethernet framing of downlink data and is handled the processing of the management of user side ONU and up EPON data;
Each WiMAX, the specific transmission frequency of WiFi base station assigns that the radiofrequency signal transaction card is responsible for finishing the protocol processes of WiMAX and two kinds of wireless access technologys of WiFi and is managed for OLT;
Channeling/demultiplexing module is finished the channeling of descending transmission signal and the demultiplexing of up received signal;
Optical transceiver module is finished the electric light conversion of downlink electrical signal, utilizes optical fiber to carry out descending transmission, and the opto-electronic conversion of upward signal, the signal of telecommunication is sent into channeling/demultiplexing module further handle.
2. an EPON and WiMAX, WiFi merge the cut-in method that inserts terminal OLT device, it is characterized in that, adopt the mode of frequency division multiplexing to finish, utilize the mode of sub-carrier modulation to be carried on the downstream wavelength of optical transceiver module 1550nm based on the 1.25Gbit/s digital baseband signal of EPON host-host protocol and multiplexing based on the radiofrequency signal of WiMAX, WiFi standard.
3. method according to claim 2, it is characterized in that, user side at Access Network, the wireless access base station of WiMAX, WiFi and the ONU of EPON integrate, to reduce the complexity of equipment cost and network management, for downlink business, ONU finishes the opto-electronic conversion of downstream signal, obtain digital baseband signal by frequency filtering, and filter out the EPON frame that belongs to this ONU, filter out the special frequency channel signal that OLT distributes to this base station by the wireless base station, and utilize frequency converter to obtain the base station and insert the frequency that the user carries out radio frequency transmission to terminal.
4. method according to claim 2 is characterized in that, the user side of Access Network, and for the uplink service of wired access, ONU is packaged into the EPON frame to it, is carried on the 1310nm wavelength with the baseband signal form by the OLT distributed time slot to send.For the upward signal of wireless access, the base station is carried out frequency conversion according to the special frequency channel that OLT distributes to it, carries out uplink with the form modulation 1310nm optical wavelength of subcarrier.
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| CN201010133115A CN101808255A (en) | 2010-03-26 | 2010-03-26 | Access terminal OLT device with integration of EPON, WiMAX and WiFi and access method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281176A (en) * | 2011-08-18 | 2011-12-14 | 杭州讯久科技有限公司 | Multi-signal fusion access local terminal equipment and implementation method thereof |
| CN103117764A (en) * | 2011-09-23 | 2013-05-22 | 美国博通公司 | Multi-standard front end using wideband data converters |
| CN104105225A (en) * | 2014-07-08 | 2014-10-15 | 华侨大学 | QoS mapping method for WiFi and WiMAX fused model |
| CN104519419A (en) * | 2013-09-30 | 2015-04-15 | 中兴通讯股份有限公司 | Optical signal processing method, optical module and optical line terminal |
| WO2017063134A1 (en) * | 2015-10-13 | 2017-04-20 | 华为技术有限公司 | Ont and method for adjusting wi-fi transmission rate of ont |
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| CN101296525A (en) * | 2008-06-25 | 2008-10-29 | 山东大学 | Local side OLT device with amalgamation access |
| CN201315588Y (en) * | 2008-12-04 | 2009-09-23 | 浪潮电子信息产业股份有限公司 | ONU device for realizing EPON and wireless incorporation access |
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2010
- 2010-03-26 CN CN201010133115A patent/CN101808255A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101296525A (en) * | 2008-06-25 | 2008-10-29 | 山东大学 | Local side OLT device with amalgamation access |
| CN201315588Y (en) * | 2008-12-04 | 2009-09-23 | 浪潮电子信息产业股份有限公司 | ONU device for realizing EPON and wireless incorporation access |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281176A (en) * | 2011-08-18 | 2011-12-14 | 杭州讯久科技有限公司 | Multi-signal fusion access local terminal equipment and implementation method thereof |
| CN103117764A (en) * | 2011-09-23 | 2013-05-22 | 美国博通公司 | Multi-standard front end using wideband data converters |
| US9363116B2 (en) | 2011-09-23 | 2016-06-07 | Broadcom Corporation | Multi-standard front end using wideband data converters |
| CN104519419A (en) * | 2013-09-30 | 2015-04-15 | 中兴通讯股份有限公司 | Optical signal processing method, optical module and optical line terminal |
| CN104105225A (en) * | 2014-07-08 | 2014-10-15 | 华侨大学 | QoS mapping method for WiFi and WiMAX fused model |
| WO2017063134A1 (en) * | 2015-10-13 | 2017-04-20 | 华为技术有限公司 | Ont and method for adjusting wi-fi transmission rate of ont |
| CN108292954A (en) * | 2015-10-13 | 2018-07-17 | 华为技术有限公司 | A kind of method of adjustment of the Wi-Fi transmission rates of ONT and ONT |
| CN108292954B (en) * | 2015-10-13 | 2020-02-14 | 华为技术有限公司 | ONT and method for adjusting Wi-Fi transmission rate of ONT |
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Application publication date: 20100818 |