CN103117909B - A kind of multi-system digital optical fiber category 5 cable distribution system - Google Patents

A kind of multi-system digital optical fiber category 5 cable distribution system Download PDF

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CN103117909B
CN103117909B CN201210571164.0A CN201210571164A CN103117909B CN 103117909 B CN103117909 B CN 103117909B CN 201210571164 A CN201210571164 A CN 201210571164A CN 103117909 B CN103117909 B CN 103117909B
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signal
expanding
digital
modulation
category
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CN201210571164.0A
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CN103117909A (en
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赖克中
张健荣
谭金生
陈群峰
廖小康
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中邮科通信技术股份有限公司
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Abstract

The present invention relates to a kind of multi-system digital optical fiber category 5 cable distribution system, it is characterized in that: be made up of near-end access unit part, expanding element part and far-end capping unit part, and form down link and the down link of system by above-mentioned three cell mesh.The present invention has higher integrated level, the low noise cancellation circuits such as near-end access unit, expanding element, far-end capping unit and frequency changer circuit, amplifying circuit all have employed integrated module mentality of designing, thus making this system bulk less, reliability is stronger, more utilizes installing and using of Practical Project.

Description

A kind of multi-system digital optical fiber category 5 cable distribution system

Technical field

The present invention relates to Wireless Telecom Equipment, particularly a kind of multi-system digital optical fiber category 5 cable distribution system, be applicable to solve register one's residence difficulty, property of wireless signal and coordinate difficult problem, this system need not redeploy cable, residence network resource, user resources directly can be utilized to carry out cell signal covering, and the mode of confession far away can be adopted to solve the problem of user terminal power taking.The Signal transmissions that set of system just can complete multiple types covers, and realizes the covering that multiple system shares wireless speech and data, overcomes the difficult problems such as the interference existed in conventional mobile phone quorum sensing inhibitor mode is large, operator's overlapping investment.

Background technology

Domestic personal mobile communication operator always payes attention to the networking of in-door covering, has built large quantities of indoor covering system.But traditional indoor covering system design is the demand based on 2G network, and the emphasis that covering scheme is paid close attention to is the covering demand meeting voice and low-speed data service, the requirement to capacity and quality of 3G network and business can not be met very well.In today of wireless IPization, and the mobile communication system of 3G and later release is by starting the demand of large-scale application high speed data transfer, calls new in-door covering compartment system.The Broadband high-speed data professional ability of 3G can realize wireless IP operation well, and high speed business occurs in indoor mostly, has higher requirement to indoor covering system.The indoor covering system meeting 3G demand and following needs as He Jianshe is an important problem.High-speed data service is that 3G distinguishes one of main feature of 2G, and compare outdoor user, stationary indoors user more likely uses the colourful data service of 3G, 3G is that terminal use provides many new business, comprise visual telephone, video flowing, game, MMS, E-mail, Web etc., these new business are easier in indoor application, and it requires that higher network capacity and QoS ensure.Simultaneously according to statistics, indoor user distribution density is generally greater than more than outdoor user's twice, and high value business customer mainly concentrates on indoor, therefore, ensureing the in-door covering that network is good, is the key improving the grade of service, development client, is the key factor determining 3G success or failure.For Japanese DoCoMo company, in the building that it implements in-door covering, telephone traffic is 1.43 times before not building in-door covering.In-door covering is for the importance of 3G network as can be seen here.

Multiband, multi-standard communication system is there is for operator, because the space resources in building is limited and the input cost of saving operator, therefore adopt the thinking of intensive networking by multisystem, my company based on the understanding to wireless communication technology, independent research multi-system digital optical fiber category 5 cable distribution system.It not only achieves multiband, multi signal closes road function, and directly utilizes residence network resource, user resources to carry out cell signal covering, adopts the mode of confession far away to solve the problem of user terminal power taking.Therefore in the residential communities needing multiple-network system to access, campus, hospital, large stadium, hotel, shopping centre, public block, scenic spot, airport, railway station, subway, tunnel etc., effectively can solve the weak problem of multisystem quorum sensing inhibitor.And effectively avoid the overlapping investment that operator builds mobile network system, realize the degree of depth network coverage that multiple system shares wireless speech and data.That one realizes multi-standard communication network signal compatibility and covers effective means.

Summary of the invention

The present invention relates to a kind of multi-system digital optical fiber category 5 cable distribution system, technical barrier to be solved overcomes the deficiencies in the prior art, a kind of new indoor distribution solution is provided, multi-system digital optical fiber category 5 cable distribution system passes through down-conversion, Digital Signal Processing, the process such as opto-electronic conversion is sent to expanding element by fiber medium at near-end access unit in a digital manner the signal of multiple standard, , at expanding element through opto-electronic conversion, network closes road, category-5 cable medium transfer is passed through to far-end capping unit after the process such as framing, at far-end unit multi-modulation scheme digital signal solution frame, Digital Signal Processing, up-conversion is reduced in the former frequency range of standard, carry out respectively accurately covering the area of coverage after road is closed in amplification to each standard again, to solve the residential communities needing multiple-network system to access, campus, hospital, large stadium, hotel, shopping centre, public block, scenic spot, airport, railway station, subway, the problem that the scene multisystem quorum sensing inhibitor such as tunnel are weak.

Technical program of the present invention lies in:

A kind of multi-system digital optical fiber category 5 cable distribution system, is characterized in that: system is made up of near-end access unit, expanding element and far-end capping unit,

The BS interface of described near-end access unit (a) is respectively behind the base station or base station zoom out system coupling downlink radio-frequency signal of multiple different system, enter the near-end integrated module (1a) containing multiple different systems radio circuit, then respectively through the dielectric duplexer filtering of each self-made type, descending low noise amplifier circuit low noise is amplified, after descending frequency changer circuit is down-converted to descending intermediate-freuqncy signal, output to the data intermediate frequency module (2a) containing multiple different systems and respectively ADC sampling and multi-modulation scheme Digital Signal Processing and light/electricity conversion are carried out to the radiofrequency signal of multiple different systems, multi-modulation scheme downlink optical signal after light/electricity conversion is sent to expanding element (b) by digital light module by optical fiber, after system near-end access unit (a) receives the multi-modulation scheme uplink optical signal sent from expanding element (b), after digital light module, enter into near-end access unit data intermediate frequency module (2a) carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, after the DAC sampling of multi-modulation scheme, output to near-end access unit integrated module (1a), respectively multi-modulation scheme upstream radio-frequency signal is upconverted to the up intermediate-freuqncy signal of multi-modulation scheme by the up frequency changer circuit of access unit integrated module (1a), after carrying out radio frequency amplification again, the base-station interface of different systems is turned back to through dielectric duplexer, the broadband signal that ONU or AC exports also can by the gigabit Ethernet transceiver module access network based on ethernet digital signal of multi-system digital optical fiber category 5 cable distribution system near-end access unit (a), its data are reached digital light module, be sent to expanding element (b) by optical fiber together with multi-modulation scheme downlink optical signal,

After described expanding element (b) receives by fiber medium the multi-modulation scheme downlink optical signal that near-end access unit (a) sends over, after digital light module, enter into expanding element multi-modulation scheme data intermediate frequency module (1b) carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, and the broadband signal to be accessed by Gigabit Ethernet module with proximally access unit or the ONU/AC broadband signal directly carrying out accessing at expanding element end carry out conjunction road, the digital signal of closing behind road carries out framing again with certain form, by merit subdivision, downstream digital signal is outputted to 8 network interfaces and be sent to far-end capping unit (c) by category-5 cable, the digital uplink signal that the distally capping unit that 8 network interfaces receive by expanding element (b) is sent by category-5 cable closes road, behind conjunction road according to the form of framing by each standard data decomposition out, near-end access unit (a) is transferred to after then carrying out Digital Signal Processing, opto-electronic conversion by the multi-modulation scheme data intermediate frequency module (1b) of expanding element (b), in addition the light mouth that expanding element (b) provides can also be applied to the cascade between expanding element (b).POE function of supplying power also can be adopted to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element (b);

After described far-end capping unit (c) receives by category-5 cable medium the multi-modulation scheme downstream digital signal that expanding element (b) sends over, enter into far-end capping unit data intermediate frequency module (1c) according to framing form by each standard data decomposition out, again Digital Signal Processing is carried out to the parallel data recovered, pass through filtering, the intermediate frequency algorithm process such as interpolation, far-end capping unit integrated module (2c) is outputted to finally by after DAC conversion, descending frequency changer circuit respectively through each self-made type upconverts to downlink radio-frequency signal, downstream signal amplifies, after dielectric duplexer filtering, export after carrying out conjunction road by multiplefrequency mixer (3c) and by wide frequency antenna or wideband room subsystem, the area of coverage is accurately covered, the broadband signal simultaneously gone out from downstream digital signal decomposition completes wireless coverage by AP unit or provides corresponding broadband transparent interface to user side, after the multi-modulation scheme upstream radio-frequency signal received by antenna or wideband room subsystem enters into far-end capping unit (c), first carry out shunt through multiplefrequency mixer, then the dielectric duplexer filtering of each self-made type is carried out respectively by the far-end integrated module (2c) containing multiple different systems radio circuit, up low noise amplifier circuit low noise is amplified, after up frequency changer circuit is down-converted to up intermediate-freuqncy signal, output to the data intermediate frequency module (1c) containing multiple different systems carry out ADC sampling and Digital Signal Processing to the radiofrequency signal of multiple different systems respectively and carry out framing again with certain form, again the multi-modulation scheme digital uplink signal after framing is sent to expanding element (b) by category-5 cable.

Wherein, system that employs digital processing technology, therefore the Signal transmissions of multiple different systems can be carried out in optical fiber and category-5 cable, and cover at far-end and single-endedly have employed wideband path combining technique, only can complete the quorum sensing inhibitor to blind area by a wide frequency antenna wide frequency antenna wide frequency antenna or a set of wideband wideband room subsystem, not need to adopt the wideband room subsystem of the antenna of multiple different systems or many cover different systems to cover.

System that employs digital processing technology, support chain, star, annular and multistage tree-like connection, networking function is powerful; Also can flexible configuration connected mode according to actual needs, the power output of each equipment is all fully used.

This system, in the process of carrying out radio signal transmission, can also carry out the transmission of ONU or AC broadband signal; And according to actual conditions needs, the access of ONU or AC broadband signal can be selected flexibly, can select to access at near-end access unit, can also select to access at expanding element.

This system can adopt POE function of supplying power to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element (b), makes far-end capping unit in application, become more flexible, not limited to by power supply condition.

The invention has the advantages that: the transmission that the present invention can complete multiple types covers, and realizes the covering that multiple system shares wireless speech and data, overcome the difficult problems such as the interference existed in conventional mobile phone quorum sensing inhibitor mode is large, operator's overlapping investment; This system according to actual conditions needs, can also select the access of ONU or AC broadband signal flexibly, while realizing multi-modulation scheme quorum sensing inhibitor, also solves the problem that broadband/WLAN access is difficult; This system has higher integrated level, the low noise cancellation circuits such as near-end access unit, expanding element, far-end capping unit and frequency changer circuit, amplifying circuit all have employed integrated module mentality of designing, thus making this system bulk less, reliability is stronger, more utilizes installing and using of Practical Project.

Accompanying drawing explanation

Fig. 1 is the near-end access unit structure chart of the embodiment of the present invention.

Fig. 2 is the expanding element structure chart of the embodiment of the present invention.

Fig. 3 is the far-end capping unit structure chart of the embodiment of the present invention.

Fig. 4 is the hub-and-spoke configuration networking diagram of the embodiment of the present invention.

Fig. 5 is the chain structure networking diagram of the embodiment of the present invention.

Fig. 6 is the ring type structure networking diagram of the embodiment of the present invention.

Fig. 7 is the access schematic block diagram of ONU or the AC broadband signal of the embodiment of the present invention.

Fig. 8 is that the line of the embodiment of the present invention is to signal transmission schematic diagram.

Fig. 9 is the POE electrical transfer schematic diagram of the embodiment of the present invention.

Embodiment

For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.

The present invention designs multi-system digital optical fiber category 5 cable distribution system, comprises with lower part:

(1) after the BS interface of multi-system digital optical fiber category 5 cable distribution system near-end access unit is coupled downlink radio-frequency signal from the base station of multiple different system (or base station zoom out system) respectively, enter the near-end integrated module containing multiple different systems radio circuit, then respectively through the dielectric duplexer filtering of each self-made type, descending low noise amplifier circuit low noise is amplified, after descending frequency changer circuit is down-converted to descending intermediate-freuqncy signal, output to the data intermediate frequency module containing multiple different systems and respectively ADC sampling and multi-modulation scheme Digital Signal Processing and light/electricity conversion are carried out to the radiofrequency signal of multiple different systems, multi-modulation scheme downlink optical signal after light/electricity conversion is sent to expanding element by digital light module by optical fiber.After system near-end access unit receives the multi-modulation scheme uplink optical signal sent from expanding element, enter into after digital light module near-end access unit data intermediate frequency module carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, multi-modulation scheme DAC sampling after, output to near-end access unit integrated module, after respectively multi-modulation scheme upstream radio-frequency signal being upconverted to the up intermediate-freuqncy signal of multi-modulation scheme by the up frequency changer circuit of access unit integrated module, turn back to the base-station interface of different systems through dielectric duplexer.The broadband signal that ONU or AC exports also can by the gigabit Ethernet transceiver module access network based on ethernet digital signal of multi-system digital optical fiber category 5 cable distribution system near-end access unit, its data are reached digital light module, be sent to expanding element by optical fiber together with multi-modulation scheme downlink optical signal.After multi-system digital optical fiber category 5 cable distribution system expanding element receives by fiber medium the multi-modulation scheme downlink optical signal that near-end access unit sends over, after digital light module, enter into expanding element multi-modulation scheme data intermediate frequency module carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, and carry out conjunction road with the broadband signal (or direct ONU/AC broadband signal of carrying out accessing at expanding element end) that proximally access unit is accessed by Gigabit Ethernet module, the digital signal of closing behind road carries out framing again with certain form, by merit subdivision, downstream digital signal is outputted to 8 network interfaces and be sent to far-end capping unit by category-5 cable.The digital uplink signal that the distally capping unit that 8 network interfaces receive by expanding element is sent by category-5 cable closes road, behind conjunction road according to the form of framing by each standard data decomposition out, near-end access unit is transferred to after then carrying out opto-electronic conversion by the multi-modulation scheme data intermediate frequency module of expanding element.In addition the light mouth that expanding element provides can also be applied to the cascade between expanding element.POE function of supplying power also can be adopted to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element.After multi-system digital optical fiber category 5 cable distribution system far-end capping unit receives by category-5 cable medium the multi-modulation scheme downstream digital signal that expanding element sends over, enter into far-end capping unit data intermediate frequency module according to framing form by each standard data decomposition out, again Digital Signal Processing is carried out to the parallel data recovered, pass through filtering, the intermediate frequency algorithm process such as interpolation, far-end capping unit integrated module is outputted to finally by after DAC conversion, descending frequency changer circuit respectively through each self-made type upconverts to downlink radio-frequency signal, downstream signal amplifies, after dielectric duplexer filtering, export after carrying out conjunction road by multiplefrequency mixer and by wide frequency antenna wideband covering wide frequency antenna or wideband room subsystem, the area of coverage is accurately covered, the broadband signal simultaneously gone out from downstream digital signal decomposition completes wireless coverage by AP unit or provides corresponding broadband transparent interface to user side.After the multi-modulation scheme upstream radio-frequency signal received by wide frequency antenna or wideband room subsystem enters into far-end capping unit, first carry out shunt through multiplefrequency mixer, then the dielectric duplexer filtering of each self-made type is carried out respectively by the far-end integrated module containing multiple different systems radio circuit, up low noise amplifier circuit low noise is amplified, after up frequency changer circuit is down-converted to up intermediate-freuqncy signal, output to the data intermediate frequency module containing multiple different systems carry out ADC sampling and Digital Signal Processing to the radiofrequency signal of multiple different systems respectively and carry out framing again with certain form, again the multi-modulation scheme digital uplink signal after framing is sent to expanding element by category-5 cable.

(2) system that employs digital processing technology, therefore the Signal transmissions of multiple different systems can be carried out in optical fiber and category-5 cable, and cover at far-end and single-endedly have employed wideband path combining technique, only can complete the quorum sensing inhibitor to blind area by a wide frequency antenna wide frequency antenna wide frequency antenna wideband covering wide frequency antenna or a set of wideband wideband room subsystem, not need to adopt the wideband room subsystem of the wide frequency antenna of multiple different systems or many cover different systems to cover.

(3) system that employs digital processing technology, support chain, star, annular and multistage tree-like connection, networking function is powerful.Also can flexible configuration connected mode according to actual needs, the power output of each equipment is all fully used.

(4) this system is in the process of carrying out radio signal transmission, can also carry out the transmission of ONU or AC broadband signal.And according to actual conditions needs, the access of ONU or AC broadband signal can be selected flexibly, can select to access at near-end access unit, can also select to access at expanding element.

(5) this system can adopt POE function of supplying power to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element (b), makes far-end capping unit in application, become more flexible, not limited to by power supply condition.

As Fig. 1, shown in Fig. 2 and Fig. 3, in (1) part, down link is: after the BS interface of multi-system digital optical fiber category 5 cable distribution system near-end access unit (a) is coupled downlink radio-frequency signal from the base station of multiple different system (or base station zoom out system) respectively, enter the near-end integrated module (1a) containing multiple different systems radio circuit, then respectively through the dielectric duplexer filtering of each self-made type, descending low noise amplifier circuit low noise is amplified, after descending frequency changer circuit is down-converted to descending intermediate-freuqncy signal, output to the data intermediate frequency module (2a) containing multiple different systems and respectively ADC sampling and Digital Signal Processing and light/electricity conversion are carried out to the radiofrequency signal of multiple different systems, multi-modulation scheme downlink optical signal after light/electricity conversion is sent to expanding element (b) by digital light module by optical fiber.After multi-system digital optical fiber category 5 cable distribution system expanding element (b) receives by fiber medium the multi-modulation scheme downlink optical signal that near-end access unit (a) sends over, after digital light module, enter into expanding element multi-modulation scheme data intermediate frequency module (1b) carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, and carry out conjunction road with the broadband signal (or direct ONU/AC broadband signal of carrying out accessing at expanding element end) that proximally access unit is accessed by Gigabit Ethernet module, the digital signal of closing behind road carries out framing again with certain form, by merit subdivision, downstream digital signal is outputted to 8 network interfaces and be sent to far-end capping unit (c) by category-5 cable.After multi-system digital optical fiber category 5 cable distribution system far-end capping unit (c) receives by category-5 cable medium the multi-modulation scheme downstream digital signal that expanding element (b) sends over, enter into far-end capping unit data intermediate frequency module (1c) according to framing form by each standard data decomposition out, again Digital Signal Processing is carried out to the parallel data recovered, pass through filtering, the intermediate frequency algorithm process such as interpolation, far-end capping unit integrated module (2c) is outputted to finally by after DAC conversion, descending frequency changer circuit respectively through each self-made type upconverts to downlink radio-frequency signal, downstream signal amplifies, after dielectric duplexer filtering, export after carrying out conjunction road by multiplefrequency mixer (3c) and by wide frequency antenna wideband covering wide frequency antenna or wideband room subsystem, the area of coverage is accurately covered, up link is: after the multi-modulation scheme upstream radio-frequency signal received by wide frequency antenna or wideband room subsystem enters into far-end capping unit (c), first carry out shunt through multiplefrequency mixer, then the dielectric duplexer filtering of each self-made type is carried out respectively by the far-end integrated module (2c) containing multiple different systems radio circuit, up low noise amplifier circuit low noise is amplified, after up frequency changer circuit is down-converted to up intermediate-freuqncy signal, output to the data intermediate frequency module (1c) containing multiple different systems carry out ADC sampling and Digital Signal Processing to the radiofrequency signal of multiple different systems respectively and carry out framing again with certain form, again the multi-modulation scheme digital uplink signal after framing is sent to expanding element (b) by category-5 cable.The digital uplink signal that the distally capping unit that 8 network interfaces receive by expanding element (b) is sent by category-5 cable closes road, behind conjunction road according to the form of framing by each standard data decomposition out, near-end access unit (a) is transferred to after then carrying out opto-electronic conversion by the multi-modulation scheme data intermediate frequency module (1b) of expanding element (b).After system near-end access unit (a) receives the multi-modulation scheme uplink optical signal sent from expanding element (b), after digital light module, enter into near-end access unit data intermediate frequency module (2a) carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, after the DAC sampling of multi-modulation scheme, output to near-end access unit integrated module (1a), after respectively multi-modulation scheme upstream radio-frequency signal being upconverted to the up intermediate-freuqncy signal of multi-modulation scheme by the up frequency changer circuit of access unit integrated module (1a), the base-station interface of different systems is turned back to through dielectric duplexer.Signal is introduced community by the category-5 cable that this system also can utilize shared EPON to register one's residence, place RU unit at cell networks line cap and signals revivification is become radiofrequency signal, realize community movable signal to cover, this mode takes full advantage of the existing resource of FTTH, can investment reduction and plenty of time, realize the quick layout of MPS process.

As shown in Figure 1, Figure 2 and Figure 3, in (2) part, system that employs digital processing technology, therefore the Signal transmissions of multiple different systems can be carried out in optical fiber and category-5 cable, and cover at far-end and single-endedly have employed wideband path combining technique, only can complete the quorum sensing inhibitor to blind area by a wideband wideband covering wide frequency antenna or a set of wideband wideband room subsystem, not need to adopt the wideband room subsystem of the wide frequency antenna of multiple different systems or many cover different systems to cover.Near-end access unit receives the base station down radiofrequency signal of multiple different system, is sent to expanding element respectively after the filtering of each self-made type, low noise amplification, down-conversion, ADC sampling, Digital Signal Processing opto-electronic conversion by optical fiber.Expanding element carries out light/electricity conversion, multi-modulation scheme Digital Signal Processing, networking He Lu, again framing after receiving the multi-modulation scheme downlink optical signal that near-end access unit sends, and then by merit subdivision, downstream digital signal is outputted to 8 network interfaces and is sent to far-end capping unit by category-5 cable.Far-end capping unit is accurately covered the area of coverage by wide frequency antenna or wideband room subsystem after carrying out framing after receiving by category-5 cable medium the multi-modulation scheme downstream digital signal that expanding element sends over and carrying out the Digital Signal Processing of each self-made type, DAC conversion, up-conversion, signal amplification, filtering, conjunction road; Up link is: after the multi-modulation scheme upstream radio-frequency signal received by wide frequency antenna or wideband room subsystem enters into far-end capping unit, is sent to expanding element through multiplefrequency mixer shunt, filtering and the multi-modulation scheme digital uplink signal after the filtering respectively through each self-made type, low noise amplification, down-conversion, ADC sampling, Digital Signal Processing, again framing by category-5 cable.Near-end access unit is transferred to after the digital uplink signal He Lu that the distally capping unit that 8 network interfaces receive by expanding element is sent by category-5 cable, solution frame, opto-electronic conversion.After near-end access unit receives the multi-modulation scheme uplink optical signal sent from expanding element, after carrying out the Digital Signal Processing of light/electricity conversion and each self-made type, DAC sampling, up-conversion, turn back to the base-station interface of different systems through dielectric duplexer.

As shown in Figure 4, Figure 5 and Figure 6, in (3) part, system that employs digital processing technology, in near-end access unit to the transmission of expanding element can not because of the length of transmission range the intensity of attenuated signal, to gsm system, DCS system etc. also there is the cascade up end to make an uproar controlling functions, the change of making an uproar at the bottom of upper line output after reducing system cascade network.Can according to practical application need support communication link protection structure, star net forming structure, annular networking structure and multistage tree-like networking structure etc., networking function is powerful, can place expanding element, far-end capping unit flexibly and flexible configuration connected mode according to actual needs, the power output of each equipment is all fully used.

As shown in Figure 7, Figure 8, in (4) part, this system, in the process of carrying out radio signal transmission, can also carry out the transmission of ONU or AC broadband signal.And according to actual conditions needs, the access of ONU or AC broadband signal can be selected flexibly, can select to access at near-end access unit, can also select to access at expanding element.In ONU or the AC broadband signal of near-end access unit access, through gigabit Ethernet transceiver module, its data are reached digital light module, be sent to expanding element (b) by optical fiber together with multi-modulation scheme downlink optical signal, then carry out conjunction road at expanding element by conjunction road adapter and downstream digital signal.The signal closed behind road is sent to far-end capping unit by category-5 cable, and far-end capping unit decomposites broadband signal from the downstream digital signal received, and then completes wireless coverage by external AP unit or provides corresponding broadband transparent interface to user side.Also or directly carry out the access of ONU or AC broadband signal at expanding element, then at expanding element by closing road adapter and downstream digital signal carries out conjunction road.The signal closed behind road is sent to far-end capping unit by category-5 cable, and far-end capping unit decomposites broadband signal from the downstream digital signal received, and then completes wireless coverage by external AP unit or provides corresponding broadband transparent interface to user side.Article one, category-5 cable has 4 pairs of twisted-pair feeders, and by ethernet standard, use wherein 1,2 and 3,6 transmission TX and RX signals, other two pairs of lines 4,5 and 7,8 are idle, and the transmission that may be used for other signal uses.

As shown in Figure 9, in (5) part, this system can adopt POE function of supplying power to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element (b), the PSE module of expanding element exports very little voltage at port at the beginning, until it detects that cable terminations connects is the receiving end far-end capping unit of a support IEEE 802.3af standard.After receiving end far-end capping unit PD module being detected, PSE device may be classified for PD equipment, and assesses this power loss needed for PD equipment.Then power supply is started: within the starting period of a configurable time (being generally less than 15 μ s), PSE device starts to power from low-voltage to PD equipment, until provide the DC power supply of reliable and stable 48V.If when PD equipment disconnects from network, PSE will (generally within 300 ~ 400ms) stop powering for PD equipment rapidly, and whether duplicate detection process connects PD equipment with the terminal detecting cable.POE function of supplying power makes far-end capping unit in application, become more flexible in the application of multi-system digital optical fiber category 5 cable distribution system, not limited to by power supply condition.

The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (5)

1. a multi-system digital optical fiber category 5 cable distribution system, is characterized in that: system is made up of near-end access unit, expanding element and far-end capping unit,
The BS interface of described near-end access unit (a) is respectively behind the base station or base station zoom out system coupling downlink radio-frequency signal of multiple different system, enter the near-end integrated module (1a) containing multiple different systems radio circuit, then respectively through the dielectric duplexer filtering of each self-made type, descending low noise amplifier circuit low noise is amplified, after descending frequency changer circuit is down-converted to descending intermediate-freuqncy signal, output to the data intermediate frequency module (2a) containing multiple different systems and respectively ADC sampling and multi-modulation scheme Digital Signal Processing and light/electricity conversion are carried out to the radiofrequency signal of multiple different systems, multi-modulation scheme downlink optical signal after light/electricity conversion is sent to expanding element (b) by digital light module by optical fiber, after system near-end access unit (a) receives the multi-modulation scheme uplink optical signal sent from expanding element (b), after digital light module, enter into near-end access unit data intermediate frequency module (2a) carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, after the DAC sampling of multi-modulation scheme, output to near-end integrated module (1a), respectively multi-modulation scheme upstream radio-frequency signal is upconverted to the up intermediate-freuqncy signal of multi-modulation scheme by the up frequency changer circuit of access unit integrated module (1a), after carrying out radio frequency amplification again, the base-station interface of different systems is turned back to through dielectric duplexer, the broadband signal that ONU or AC exports also can by the gigabit Ethernet transceiver module access network based on ethernet digital signal of multi-system digital optical fiber category 5 cable distribution system near-end access unit (a), its data are reached digital light module, be sent to expanding element (b) by optical fiber together with multi-modulation scheme downlink optical signal, after described expanding element (b) receives by fiber medium the multi-modulation scheme downlink optical signal that near-end access unit (a) sends over, after digital light module, enter into expanding element multi-modulation scheme data intermediate frequency module (1b) carry out light/electricity conversion, multi-modulation scheme Digital Signal Processing, and the broadband signal to be accessed by Gigabit Ethernet module with proximally access unit or directly carrying out access ONU/AC broadband signal at expanding element end carries out conjunction road, the digital signal of closing behind road carries out framing again with certain form, by merit subdivision, downstream digital signal is outputted to 8 network interfaces and be sent to far-end capping unit (c) by category-5 cable, the digital uplink signal that the distally capping unit that 8 network interfaces receive by expanding element (b) is sent by category-5 cable closes road, behind conjunction road according to the form of framing by each standard data decomposition out, near-end access unit (a) is transferred to after then carrying out Digital Signal Processing, opto-electronic conversion by the multi-modulation scheme data intermediate frequency module (1b) of expanding element (b), in addition the light mouth that expanding element (b) provides can also be applied to the cascade between expanding element (b), POE function of supplying power also can be adopted to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element (b), after described far-end capping unit (c) receives by category-5 cable medium the multi-modulation scheme downstream digital signal that expanding element (b) sends over, enter into far-end capping unit data intermediate frequency module (1c) according to framing form by each standard data decomposition out, again Digital Signal Processing is carried out to the parallel data recovered, pass through filtering, the intermediate frequency algorithm process such as interpolation, far-end integrated module (2c) is outputted to finally by after DAC conversion, descending frequency changer circuit respectively through each self-made type upconverts to downlink radio-frequency signal, downstream signal amplifies, after dielectric duplexer filtering, export after carrying out conjunction road by multiplefrequency mixer (3c) and by wide frequency antenna or wideband room subsystem, the area of coverage is accurately covered, the broadband signal simultaneously gone out from downstream digital signal decomposition completes wireless coverage by AP unit or provides corresponding broadband transparent interface to user side, after the multi-modulation scheme upstream radio-frequency signal received by antenna or wideband room subsystem enters into far-end capping unit (c), first carry out shunt through multiplefrequency mixer, then the dielectric duplexer filtering of each self-made type is carried out respectively by the far-end integrated module (2c) containing multiple different systems radio circuit, up low noise amplifier circuit low noise is amplified, after up frequency changer circuit is down-converted to up intermediate-freuqncy signal, output to the data intermediate frequency module (1c) containing multiple different systems carry out ADC sampling and Digital Signal Processing to the radiofrequency signal of multiple different systems respectively and carry out framing again with certain form, again the multi-modulation scheme digital uplink signal after framing is sent to expanding element (b) by category-5 cable.
2. multi-system digital optical fiber category 5 cable distribution system according to claim 1, it is characterized in that: system that employs digital processing technology, therefore the Signal transmissions of multiple different systems can be carried out in optical fiber and category-5 cable, and cover at far-end and single-endedly have employed wideband path combining technique, only can complete the quorum sensing inhibitor to blind area by a wide frequency antenna or a set of wideband room subsystem, not need to adopt the wideband room subsystem of the antenna of multiple different systems or many cover different systems to cover.
3. a kind of multi-system digital optical fiber category 5 cable distribution system according to claim 1, is characterized in that: system that employs digital processing technology, and support chain, star, annular and multistage tree-like connection, networking function is powerful; Also can flexible configuration connected mode according to actual needs, the power output of each equipment is all fully used.
4. a kind of multi-system digital optical fiber category 5 cable distribution system according to claim 1, is characterized in that: this system, in the process of carrying out radio signal transmission, can also carry out the transmission of ONU or AC broadband signal; And according to actual conditions needs, the access of ONU or AC broadband signal can be selected flexibly, selects to carry out accessing or select to access at expanding element at near-end access unit.
5. a kind of multi-system digital optical fiber category 5 cable distribution system according to claim 1, it is characterized in that: this system can adopt POE function of supplying power to provide power supply needed for the work of far-end capping unit by category-5 cable cable at expanding element (b), make far-end capping unit in application, become more flexible, do not limited to by power supply condition.
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