CN101499657B - Remote wired, wireless wideband network and electrical power system - Google Patents

Abstract

The invention provides a remote cabled/wireless wideband network and a power system. The power is transmitted from a starting point to a remote point through a DC power supply; the fluctuation of the current and voltage is eliminated by a method of gradual rectification, stabilization and bidirectional vibration elimination; safety guarantee is provided for the power supply circuit by an accompanying line open-circuit tripping circuit, a branch open-circuit uploading circuit, an over-current tripping circuit and an electric leakage tripper; the high-resistance problem of long line is overcome by a method of voltage separation by step; the protection measures such as over-voltage suppressing, lightening-proof and electromagnetic interference resistance of strand are adopted for power supply. The wireless wideband network is combined with the cabled wideband network; the cabled/wireless wideband network covers at the same time; furthermore, the cabled/wireless multi-link backup and tree-typed multi-point access network structure are provided; a proposal that a remote wireless wideband network (with the coverage radius of 20KM, for example) is complementary to a close wireless wideband network (with the coverage radius of 800m for example) is adopted; and a proposal of serial connection of deep multi-exchanger (more than 5) is adopted so that the wideband network can be connected stably from far distance.

Description

Long-rangely have, wireless broadband network and power-supply system

Affiliated technical field:

The present invention relates to long-rangely to have, wireless broadband network and register one's residence in power-supply system, especially the Internet and to the scheme of each node power supply.

Background technology:

Register one's residence in several modes that adopt in the Internet, ADSL adopts telephone line transmission, and maximum speed is 8Mbps, and Cable Modem adopts catv line to transmit, and maximum speed is 30Mbps, does not catch up with gradually the demand of development.Adopt FTTC, netting twine is current a kind of comparatively ideal method to the mode at family.Because Fiber to the home, expense is high, and technical difficulty is large, is not suitable for large area and connects, and netting twine is low to user costs, and technical difficulty is little, and speed can reach 100Mbps, 1000Mbps, is suitable for large area and connects.But the problem facing is at present how networking.First problem Shi community or rural area, due to ownership problem, are difficult to receive power supply nearby, even if receive power supply, middle a certain node power-off subsequent user just be could not get on to the Net.Second Problem is in the situation that not using optical fiber, and the existing method extended distance connecting with netting twine is limited, and network configuration is unreasonable, is not suitable in community or the connection of rural large area.Wireless local area network technology develops very soon, and the high-speed radio that can realize 100Mbps and the such speed of 300Mbps covers, but can only realize among a small circle at some at present, can not realize large-area high speed covering.

Summary of the invention and technical problem:

In community or rural area can be connected by route and wide area network, then by netting twine, be connected to step by step user by switch.The connecting line distance of each switch and a upper switch is 100 meters, by 80 meters of calculating of actual extension, distance through 25 switch serial connections with regard to extensible 2000 meters, this programme passes through in experiment, and normally used 1 year, may extend in theory 5000m even longer, concrete grammar will be introduced below.If with coaxial cable, the wire spacing of each switch is 800 meters, and 10 such switches, also completely can be without relaying even connect tens kms with optical fiber Hua， community or rural area with regard to the distance of extensible 8000 meters.When large area connects, network configuration adopts tree, and with netting twine, connecing switch is most economical, practical method, and 2000 meters of general single branch road extensions are just enough.On the basis of wired connection, on network, add some wireless routings or wireless aps, in dense population areas, realize near radio broadband network at a high speed and cover (if covering radius is 800 meters), by remote wireless aps (if covering radius is 20 kilometers) as a supplement, realize comprehensive covering of broadband network again.

Consider in the network of 100Mbps, 4 strands in netting twine (8) have 2 strands of (4) lines not use in network data communication, so can be with these 4 lines as power line, concerning 1000Mbps, coaxial cable, fiber optic network, the twisted wire quantity in available independent twisted wire or increase connection cable is used as power line, by twisted wire effectively thunder-lightning, anti-electromagnetic interference, will introduce below.Power supply and network signal adopt the method that is together connected to each node of far-end from starting point.Because inductance, the distributed capacitance of twisted wire are all larger, cannot use alternating current power transmission, must use direct current power transmission.The in the situation that of remote (as 2000 meters) power transmission, it is very large that resistance can become, and the higher voltage (as 300V) of essential employing, so transmission process must solve safe problem.In the circuit of the high distributed capacitance of high inductance, in transmission process, in circuit, can generate strong interchange oscillating current, can make electric current normally send to, even if the power supply wiring of two inter-exchanges distance is only 80 meters, the interchange oscillating current that twisted wire is inducted in transmission process also can have a strong impact on normally passing through of electric current, the high voltage of inducting can affect the stable of electrical appliance, even burns out electrical appliance.So must adopt certain measure to power circuit, electric current, voltage can be stablized and send to.

In order to solve power supply and Network stretch apart from these two problems, the invention provides two technical schemes of working in coordination of power supply and network configuration, make power supply and data-signal directly from starting point, be connected to each node of far-end.

Power source design:

From starting point by DC power supply to far point power transmission, the method by the two-way weakening of rectifying and voltage-stabilizing is step by step eliminated the fluctuation of current/voltage; By open circuit trip circuit, branch line of companion's line, open circuit and upload trip circuit, overcurrent tripping circuit, leakage tripping device and provide safety guarantee for power supply circuits; The method of tapping voltage isolation overcomes the high resistance problem of long transmission line, and stage isolation also makes maintenance become easy; Employing overvoltage is controlled and the measure of twisted wire lightning-protection emi protection is powered.

Network plan:

Adopt wireless broadband network to combine with wired broadband network, have, wireless broadband network covers simultaneously, have, wireless multilink backs up, tree type multipoint access network structure; Remote-wireless broadband network (if covering radius is 20 kilometers) and the complementary scheme of near radio broadband network (if covering radius is 800 meters), in dense population areas, adopt near radio broadband network, express network by remote-wireless broadband network as backup network covers, and outlying (the low density of population) area adopts remote-wireless broadband network cheaply to cover; Adopt degree of depth multi-exchange serial connection (more than 5) scheme to make broadband network be stablized remote connection.

Technical prospect:

The technical program has reduced networking cost, can realize online, IP phone, Web TV, the business such as terminal wireless mobile roaming (wireless mobile cellular communications network) shared on the basis of 100Mbps, 1000Mbps.Its technical prospect is:

1. can change the pattern of existing " phone (TV) connects broadband ", become the pattern of " answering the call by (TV) in broadband ".

Due to be by switch (or route) by wired connection or wireless connections mode directly to family, user's terminal directly and net connection, so IP available phone replaces existing program controlled telephone.Can save expensive stored-program control exchange like this, adopt the pattern of soft switch, with a station server, can carry out telephone exchange, TV can change Internet Protocol Television into.Finally realize the unification that all terminals connect, the computer network that all terminals connect.

2. make mobile communication can reach at an easy rate the bandwidth of 54Mbps, 100Mbps, 300Mbps etc.

In the communication technology of mobile phone, with microcellulor technology as macrocellular technology supplement and extension is comparison effective method, but microcellulor technology has the problem of power supply above-mentioned and Network stretch too, and the speed that existing surfing Internet with cell phone technology can reach is very low, be generally several Mbps, if adopt the technology of WLAN (wireless local area network), mobile phone is as a terminal of online, its call function is by the realization of surfing the Net, as a part of function of surfing the Net, surfing Internet with cell phone is easy to reach the speed of 54Mbps, 100Mbps, 300Mbps.Wireless local area network technology uses to obtain comparative maturity now, if be able to large-area covering on the present invention program's basis, can make mobile communication can reach at an easy rate the bandwidth of 54Mbps, 100Mbps, 300Mbps etc.

3. need not connect up in a large number and build a large amount of traditional wireless base stations, construction cost is low.

Original telephone line be to each telephone terminal at family to machine room all essential each personal two electric wires connect, present networks system adopts tree network structure, between each node, all only have a cable to connect, as connected two nodes with a netting twine, only using 8 wires just can make user below network, the polytype cable of registering one's residence all can change netting twine into and connect, as telephone wire, cable television line, monitoring cables etc. all can change into by a FTTC (rural area), single dry, branch line is assigned to family and realizes these functions, if adopting wireless mode to connect to register one's residence all need not connect up, each node can adopt wired connection and two kinds of modes of wireless connections simultaneously, adopt the node of wireless connections mode to can be used as wireless base station use, can save a large amount of cables and traditional wireless base station, save a large amount of expenses.

4. supporting hardware, software engineering all can adopt existing mature modules to combine, and easily research and develop successfully.

The wireless mobile roaming technology of local area network (LAN) develops very soon now, if do suitable change aspect soft and hardware, suitably improving transmitting power can be applied after the present invention program implements, and other relevant technology (as wireless mobile cellular technology) all develops to obtain comparative maturity now.

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is power supply circuits schematic diagram of the present invention.

The explanation of power source design accompanying drawing:

1. power supply circuits.

From starting point by DC power supply to far point power transmission, the method by the two-way weakening of rectifying and voltage-stabilizing is step by step eliminated the fluctuation of current/voltage, reaches the object of remote power transmission.This power source design adopts twisted wire power supply, adopts the reason of twisted wire will be described in " lightning-protection electromagnetic interference ".In Fig. 1, D1 turns direct-current switch power supply module for exchanging, and also can adopt bridge rectifier as Figure 1-1, and input is that direct current can change D1 into DC-DC switch power module.Capacitor C 1 plays the effect of voltage stabilizing at output, two-way transition diode TVP4 eliminates the extra-high pressure of inducting in twisted wire.LINA1, LINA2 are stranded supply lines, from starting point, are connected to far-end supply terminals at different levels.Diode VD6, capacitor C 2 is the voltage stabilizing rectification circuit of far-end first order electricity consumption, and the direct current of sending to through twisted wire is carried out to secondary pressure rectification.In transmission process, the electric current of inducting in twisted wire is a kind of alternating current, must adopt the method for two-way elimination.Diode VD3 and transition diode TVP7, capacitor C 2 form forward loop, diode VD5 and transition diode TVP5, capacitor C 1 form reverse loop, like this for the electric current of inducting in twisted wire forms two way circuit, eliminate on the one hand the extra-high pressure of inducting in twisted wire, adopt on the other hand the method for two-way weakening to weaken the current oscillation in twisted wire.D3 is DC-DC switch power module, for first order equipment provides power supply, as the switch in the first order provides the DC power supply of 9 volts.VD7, VD8, C3, TVP8, D4 form next stage circuit, for next stage equipment provides power supply.Wherein TVP8, capacitor C 3 form forward loop with previous stage diode (being VD5 in the second level), wherein VD7 and previous stage transition diode, electric capacity (being TVP7, C2 in the second level) form reverse loop, for next stage circuit is eliminated high pressure and the electric current of inducting.All the other circuit at different levels are as D4, D6, and D7, D8, D9 is identical with the circuit of this two-stage.

2. electric leakage, companion's line open circuit tripping operation, current limliting trip protection circuit.

Owing to adopting the method for high tension transmission, so must take certain measure to guarantee the safety of power transmission.First being protection against electric shock, is secondly anti-short circuit.Protection against electric shock aspect, after being on the one hand the breakage of anti-electric wire skin, the charged human body that touches of exposed wire jeopardizes personal safety, be on the one hand anti-electric wire because of unexpected broken string after the charged human body that touches of the end of a thread jeopardize personal safety.After the breakage of anti-electric wire skin, the charged human body that touches of exposed wire jeopardizes personal safety aspect, adopts following scheme.K switch A1, the switch that KA2 is earth leakage protective device, for whole circuit provides earth leakage protective, once there is electric leakage, cuts off the power supply of whole circuit, guarantees Electrical Safety.D1, as adopted interchange to turn direct-current switch power supply module, must adopt not isolated form of interchange end and DC terminal, makes the electric leakage of DC terminal can make earth leakage protective device produce action.At present earth leakage protective device is on the market mostly alternating current circuit design, and when input, the output of earth leakage protective device all be direct current, reply earth leakage protective device is done corresponding change, only allows the induction coil of electric leakage process earth leakage protective device over the ground.For anti-charged because of the end of a thread after unexpected broken string, adopted following circuit.By triode VT1, resistance R 1, relay coil LB1, relay switch KB1, companion's line LINA3 forms broken circuit detection circuit.The low-voltage direct positive electricity piezoelectricity (desirable+12V) being provided by switch transformer D2 flows through companion line LINA3 (KD1 of process, KE1, KF1 switch are described in " branch line opens circuit and uploads circuit ") by D2+ through VD2, R2, power supply negative wire LINA2 end and through R1, arrives the base stage b of triode VT1, make VT1 conducting, relay coil LB1, LB2 energising, the relay switch KB1 that LB1, LB2 control separately, KB2 adhesive, late-class circuit conducting.By switch for leakage protector KA1, KA2, relay switch KB1 (normal-closed end), during the court of a feudal ruler, relay switch KC1 (Chang Kaiduan) forms trip circuit.When open circuit, after delay circuit (Fig. 1-2) produces one section between time delay, the just adhesives after approximately 0.1 second such as relay switch KC1, relay switch KB1 normal-closed end is connected by relay switch KC1 and ground wire and temporarily disconnects with earth connection, while guaranteeing open circuit, can not produce tripping operation action by earth leakage.When accompanying line because of unexpected broken string; triode VT1 cut-off; relay coil LB1, LB2 power-off; the relay switch KB1 that LB1, LB2 control separately, KB2 disconnects follow-up circuit, and relay switch KB1 (normal-closed end) connects by relay switch KC1 and ground wire; conducting produces leakage current over the ground; earth leakage protective device produces tripping operation action, cuts off whole circuit, plays a protective role.R2 is current-limiting resistance, and when electric current surpasses setting, R2 blows, companion's row line broken circuit, and triode VT1 cut-off, starts trip circuit, whole down circuitry.Diode VD4; two-way transition diode TVP6 forms the protective circuit of triode VT1; while generating extra-high pressure in companion line LINA3 and power supply negative wire LINA2; by diode VD4; two-way transition diode TVP6 forms loop; due to companion's line, LINA3 is connected with the end of power supply negative wire LINA2; another effect of diode VD4 is the starting point through companion's line LINA3 guiding power supply negative wire LINA2 by the electric current of power supply negative wire LINA2 end; reduce the resistance of electric wire; VD2 stops the high pressure of inducting to enter from the c utmost point of VT1, thus protection VT1.VD1 provides loop for the high pressure that relay coil LB1 inducts.K switch D3 is the tripping operation sense switch that opens circuit, while manually disconnecting KD3 circuit can trip into circuit normal.LED 1 is luminous when earthed circuit is normal, represents that earthed circuit is normal, and resistance R 5 is current-limiting resistance.

3. delay circuit (Fig. 1-2).

By resistance R 3, capacitor C 4 forms delay circuits, and delay time is about 0.7RC second, when capacitor C 4 charge while reaching capacity by R3, and triode VT2, VT3 conducting, relay coil LC1 energising, the K switch C1 adhesive that LC1 controls and ground wire connection.R4 is current-limiting resistance, and VD9 is the protection diode of coil LC1.

4. branch line opens circuit and uploads circuit.

Tree network structure has a plurality of branches, and power supply also must be to each branch feeding, so power supply also must have same branch, once for making each branch occur opening circuit, circuit can cut off the power supply of whole circuit too, has designed branch and has opened circuit and upload circuit.The K switch E1 (often opening) that K switch D1 (often opening), the relay coil LE1 being controlled by circuit in triode VT4, VT5 place square frame and relay coil LD1 in Fig. 1 controls, the circuit that delay circuit K switch F1 (normally closed) forms are that branch line opens circuit and uploads circuit.The circuit theory of VT4, VT5 is identical with the principle of VT1, and principle reference is " protective circuit " above.By TOA1, TOA2, docked respectively with TOB1, TOB2, separate Liang Ge branch downwards, wherein VT4 place circuit is the first branch, and VT5 place circuit is the second branch, at TOC1, TOC2 place, can pick out Liang Ge branch again, and TOD1, TOD2 place can pick out Liang Ge branch again.If there is more multiple-limb, can use same principle.

VT4 using below as explanation.Protective circuit power supply is drawn from D5; when opening circuit appears in the following circuit of VT4; VT4 cut-off, relay coil LD1 does not have electric current, and the K switch D1 that LD1 controls discharges; thereby disconnected the electric current of triode VT1 base stage b; VT1 cut-off, coil LB1 does not have electric current, and the K switch B1 that LB1 controls discharges; normal-closed end ground connection, earth leakage protective device produces tripping operation action and cuts off the power supply of whole circuit.Respectively coil LD2, the LD3 of control relay K switch D2 (often opening), KD3 (often opening) are powered by the e utmost point of VT4, and when VT4 is working properly, late-class circuit is just switched on, thereby after while guaranteeing that protective circuit is normal, one-level circuit just has electric current and passes through.Relay switch KF1 (normally closed) is delay switch, and delay circuit principle is identical with Fig. 1-2, and relay switch KF1 prolongs after when circuit starts to switch between one section of time delay and just discharges, and makes to accompany line in conducting state when KD1, KE1 also do not have closure.VT5 and relay switch KE1 are same branches circuit, if there is more multiple-limb, available same principle separates more multicircuit branch.

5. lightning protection, anti-electromagnetic interference circuit.

By two-way transition diode TVP2, the high pressure between live wire in civil power and ground wire is eliminated; two-way transition diode TVP1, TVP3 eliminate high pressure over the ground; by earth leakage protective device, twisted wire, two-way transition diode, formed anti-high pressure system, can effectively eliminate contour the pressing dry of thunder and lightning and disturb.Because the inductance of twisted wire is larger, for the such high-frequency electrical of thunder and lightning, electromagnetic interference, there is higher impedance.Spacing between twisted wire is little, and the voltage of inducting is little.If produce the strange land electric current from the three unities to another place, by earth leakage protective device tripping operation, cut off the power supply of whole circuit, play a protective role.

6. power supply stage isolation scheme.

Fig. 2 is supply voltage stage isolation schematic diagram.

Any one DC-DC module in Fig. 1, as D3, D4 all with the isolated from power (separation principle is shown in Fig. 2-1) of importation.

From the output below such as D3, D4, all can adopt and the circuit of Fig. 1 same principle line powering rearwards, because rear class and prime are isolated, overcome voltage, the impact of resistance on rear class of prime circuit, the fault of rear class can not have influence on previous stage yet.

Power source design embodiment:

1. the enforcement of power supply circuits.

In actual use, can adopt from machine room use up fine by broadband connection to each community or rural branch (calling branch in the following text), with the direct voltage of 800V, by the first order power-supply system of principle shown in Fig. 1, from machine room, deliver to each branch too simultaneously, recycling DC-DC switch power module transfers 800V direct voltage to 300V direct voltage, by the second level power-supply system of principle shown in Fig. 1, from branch, with electric wire, deliver to each nearly user's node (calling node in the following text) equally, the direct voltage that transfers the direct voltage of 300V to 9V from each node is again for switch, the direct voltage of 300V is transferred to the DC-voltage supply phone use of 50V etc., branch and the voltage transformation module below branch adopt the pattern of voltage isolation, because the input voltage range of DC-DC switch power module is larger, as 300V turns 9V module, input voltage can normally be exported from direct current 80V to 380V, the pressure drop of circuit can not go to consider.Adopt this power transmission method, from starting point, with the electric current of 1A, can send the power of 800W, from branch, with the electric current of 0.5A, can send the power of 150W, the power of an exchanger power consumption is in 5W left and right, consider the loss of circuit, can connect the switch of 120 and 20 left and right respectively, from branch, pick out every road and can meet 2000 to 3000 Ren communities or rural connection need for electricity.In the network of 100M, from community or rural branch can the optical fiber from machine room be connected and be converted to netting twine and connect with route or switch, (orange, orange are in vain for two strands of twisted-pair feeders in recycling netting twine, green, green white) carry out data with the switch of next stage and be connected, utilize in netting twine one remaining twisted-pair feeder (blue line for just, blue white line is for bearing) as power line, one (palm fibre is white) in last one (palm fibre, palm fibre are in vain) is as companion's line, palm fibre line can merge to reduce line resistance with blue line, and the direct current of 300V is delivered to each node from branch.

2. the requirement of the equipment such as cable, element.

When logical 300V or above direct voltage, between line, isolation resistance is had relatively high expectations, and between the line of general netting twine, isolation resistance is more than 30M Europe/100 meter, meet resistance requirement, outside line skin requires to have fire resistance, and must do thickening and process, to increase tension, abrasion resistance.Electric wire for logical 300 volts and above voltage, must adopt above-mentioned protective circuit to protect, and so just there will not be short-circuit fire, wire to expose, break and falls to jeopardizing the problem of personal safety.For low-pressure section, requirement is lower, as independent employing short-circuit protection.

The requirement configuration of each element in must using according to reality in Fig. 1, Fig. 1-1, Fig. 1-2, provides the configuration of each element when respective switch (being less than 20 switches) is powered in Liao300Fu supply line below.

D1 turns DC circuit for exchanging, and can adopt to exchange to turn direct-current switch power supply module, does not isolate with rear class; Or adopting bridge rectifier as Figure 1-1, this circuit is exported 300V direct voltage when 220V exchanges input.

The desirable CS8050 of each triode in circuit, two-way transition diode TVP6, TVP11, the desirable 18V of TVP15 is withstand voltage, all the other desirable 400V of labelled transition diode (two-way) are withstand voltage, the desirable 1N4007 of diode, capacitor C 1, C2, C3, C5, C6, C7, C8, C9 gets 5-12u, 400V, R1, R7, R4, R9 gets 5K, R3, R5 gets 270K, C4 gets 1u, R2, R6, R8 gets 0.5A fuse tube, D2, the desirable 12V DC-DC of D5 switch power module is that broken circuit detection circuit and branch line open circuit and upload circuit supply, D3, D4, D6, D7, D8, the cut-off circulation direct-current switch power supply modules such as D9 are each equipment or subordinate's line powering, LINB1, LINB2, LINB3 and LINC1, LINC2, LINC3 and LINA1, LINA2, LINA3 is identical, be respectively power supply main track, power supply negative wire and companion's line.

3. construction requirement.

Buried or built on stilts to the cable requirement by 300V and the above voltage of 300V, by the cabling requirement construction of 220V electric main.To the electric wire of 50V and following voltage, can establish by regular phone coil holder.

To apply for separately with patents such as the supporting outdoor box of native system, outdoor switch, < < auto-negotiation double copies mobile communication standard > >.

The explanation of network plan accompanying drawing:

Fig. 3 is that wireless broadband network covers schematic diagram, great circle A1, A2, A3, A4 represent the scope that remote-wireless broadband network (if covering radius is 20 kilometers) is covered, and roundlet B1, B2, B3, B4 represent the scope that near radio broadband network (if covering radius is 800 meters) is covered.A1, A2, A3, A4 represent from B1, B2, B3, B4 the region that different tranmitting frequencies covers.

Fig. 4 is schematic network structure, R1, R2, R3, R4 ... for the route of wired connection, SA1, SA2, SAn (n represents n), SB1, SB2 ..., SBn1, SBn2 ..., SC1 ... switch for each serial connection, C1, C2, C3 ... for the computer with net connection, H1, H2 ... for the mobile phone with net connection, wireless routing or the wireless aps of W1 for being launched by launching tower, W2, W3 ... for wireless routing or wireless aps.

Network plan embodiment:

1. wireless broadband network combines with wired broadband network, has, wireless broadband network covers simultaneously, has, the backup of wireless multilink the enforcement of tree type multipoint access network structure.

Branch by route R1Dao district (to township) in Fig. 4 connects with Internet by optical fiber or other method, by netting twine, be connected to following switch SA1 at different levels, SA2, (n represents n switch to SAn, principle will be introduced below), power supply also adopts above-mentioned power source design together to send.Route R2 carries out wired connection by switches such as SAn by higher level's route R1 and Internet, the switch SB1You Sange branch being connected with R2, one connects switch SB2, and one connects wireless routing (or AP) W3, one is connected to SBn1 etc. step by step, is connected to so step by step each branch.Each fulcrum all available netting twine connect computer, as computer C2 is connected with switch SA1 by netting twine, computer C4 is connected with switch SB2 by netting twine.After being connected with cable network by wireless routing (or AP) W2, W3 at (if covering radius is 800 meters) sending and receiving signal closely, make computer C3, C5, C7 and net connection, mobile phone H1 is surfed the Net and can be realized call function by W2, W2, the wireless device in the near radio broadband network in W3 corresponding diagram 3.Wireless routing (or AP) is by launching tower W1 sending and receiving signal, at larger distance (if covering radius is 20 kilometers) and all wireless device communications, once terminal equipment surpasses the coverage of near radio route or out of touch with near radio route, changes by communicating by letter with W1.As computer C6, mobile phone H2 does not closely communicate by letter with W1 during signal at periphery, the wireless device of W1 corresponding diagram 3 medium and long distance wireless broadband networks.Route R4 has two WAN mouths, and a WAN mouth connects by cable network, and a WAN mouth is connected with W1 by W4 by wireless routing (or AP), and realization has, wireless Internet access double copies.Route R2 has two WAN mouths, and a WAN mouth is by former net connection, and a WAN mouth connects with Internet nearby, realizes online double copies.

2. the enforcement of remote-wireless broadband network (if covering radius is 20 kilometers) and the complementary scheme of near radio broadband network (if covering radius is 800 meters).

In dense population areas, adopt near radio broadband network, the high-speed wideband network coverage by remote-wireless broadband network as standby broadband network, outlying (the low density of population) area adopts remote-wireless broadband network to cover.

Fig. 3 is the schematic diagram of this programme, in the circle at circle A1, A2, A3, A4 and B1, B2, B3, B4 place, (A1, B1 etc. locate as the center of circle) is respectively the overlay area of remote-wireless broadband network (calling far field in the following text) and near radio broadband network (calling near region in the following text), far field and near region adopt different frequencies, by four wrapping lid principles, by four kinds of different frequencies, can repeatedly not cover whole region respectively.By covering dense population areas, near region, back up in far field, and Ze You far field, outlying district provides covering.Because the data traffic of dense population areas is large, by near radio network, can carry out data communication at a high speed, the outlying district traffic is little, by remote-wireless network, does general covering.Corresponding mobile terminal should be able to automatically be adjusted the frequency of reception at each area of coverage, transmitted power is also answered corresponding adjusting, and concrete grammar will be described in the patent application at < < auto-negotiation double copies mobile communication standard > >.

3. the enforcement of degree of depth multi-exchange serial connection (more than 5) scheme.

In Fig. 4, by route R1, connected with Internet, by switch SA1, switch SA2 etc. is connected to switch SAn, (n represents n switch).Switch for storage forwarding formula, in practice of construction, can be connected in series to dozens of, this is that the switch due to storage forwarding formula is to adopt the mode sending again after storage, there is not the problem of the distorted signals same with the switch that amplifies midsequent, the stand-by period of computer nearly 30 seconds agreements when finding network, by experiment, after the switch of serial connection to a 25 storage forwarding formula, the time that computer is sought net is about 1 second, it is several milliseconds (type by switch is determined) that data transmit time delay, the time delay much less of this and route busy hour hundreds of millisecond, within the acceptable range.The wire spacing of each switch is 100 meters, like this by R1 actual extensible several kms backward, if carry out wireless connections by wireless aps, distance between wireless aps is as got 800 meters of visual ranges, may extend to several kms, coaxial cable line-spacing is also 800 meters, equally also may extend to several kms.If employing directional antenna, the longer better effects if of its distance as adopted optical fiber, adopts high voltage on power source design, in the situation of low line resistance, may extend to tens kilometers.Route R2 is connected in series after SAn, due to R2 when network starts to connect by switch SAn ..., SA2, SA1 obtain and connect with route R1, forms a fixed line communication link in the line by address learning, for connection below ready.In like manner, by route R3 and route R2, form a fixed line communication link, be attached to like this last route.Each equipment in network is by a nearest route access network of upper end, as computer C4 is attached to route R2 by switch SB2, SB1.If change route into managed switch, can addressable broadcast not isolated with previous stage, applicable when number of users is less, by route R1, R2 ..., carry out addressable broadcast isolation between Rn, make the impact between at different levels become minimum, and can increase the terminal quantity of access.

Accompanying drawing explanation

Fig. 1 is power supply circuits schematic diagram of the present invention.

Fig. 1-1st, the bridge rectifier figure of Fig. 1, Fig. 1-2 is the delay circuit figure of Fig. 1.

Fig. 2 is supply voltage stage isolation schematic diagram.

Fig. 2-1st, the separation principle figure of Fig. 2.

Fig. 3 is that wireless broadband network covers schematic diagram, great circle A1, A2, A3, A4 represent the scope that remote-wireless broadband network (if covering radius is 20 kilometers) is covered, and roundlet B1, B2, B3, B4 represent the scope that near radio broadband network (if covering radius is 800 meters) is covered.A1, A2, A3, A4 represent from B1, B2, B3, B4 the region that different tranmitting frequencies or channel cover.

Fig. 4 is schematic network structure, R1, R2, R3, R4 ... for the route of wired connection, SA1, SA2, SAn (n represents n), SB1, SB2 ..., SBn1, SBn2 ..., SC1 ... switch for each serial connection, C1, C2, C3 ... for the computer with net connection, H1, H2 ... for the mobile phone with net connection, long distance wireless route or the wireless aps of W1 for being launched by launching tower, W2, W3 ... for short-range wireless route or wireless aps.

Claims (4)

1. long-rangely have, wireless broadband network, Distance wide band network is comprised of cable network and wireless network, it is characterized in that: adopt wireless broadband network to combine with wired broadband network, have, wireless broadband network covers simultaneously, have, wireless multilink backup, tree type multipoint access network structure, the complementary scheme of remote-wireless broadband network and near radio broadband network, adopts degree of depth multi-exchange serial connection scheme to make broadband network be stablized remote connection.

2. according to claim 1ly long-rangely have, wireless broadband network, it is characterized in that: in dense population areas, adopt near radio broadband network, by remote-wireless broadband network, as the standby network coverage, outlying district adopts remote-wireless broadband network to cover.

3. long-rangely have, wireless broadband network power-supply system; power-supply system from starting point by DC power supply to far point power transmission; it is characterized in that: by the method for the two-way weakening of rectifying and voltage-stabilizing step by step, eliminate the fluctuation of current/voltage; by open circuit trip circuit, branch line of companion's line, open circuit and upload trip circuit, overcurrent tripping circuit, leakage tripping device and provide safety guarantee for power supply circuits; the method of tapping voltage isolation overcomes the high resistance problem of long transmission line, adopts overvoltage to control and twisted wire lightning protection, anti-electromagnetic interference safeguard measure are powered.

4. according to claim 3 long-rangely have, wireless broadband network power-supply system, it is characterized in that: by diode, electric capacity forms the voltage stabilizing rectification circuit of far-end first order electricity consumption, the direct current of sending to through twisted wire is carried out to secondary pressure rectification, by diode and transition diode, electric capacity forms forward loop, another group is by diode and transition diode, electric capacity forms reverse loop, for the voltage of inducting in twisted wire, electric current forms two way circuit, the extra-high pressure that elimination is inducted in twisted wire, and weaken the current oscillation in twisted wire, the feature of all the other same first order at different levels, companion's line forms the detection line that opens circuit, by the companion's line on branch line, open circuit and control branch line that upper level companion line opens circuit simultaneously and open circuit and upload circuit.

Images