CN105072001A - Packet microwave based multi-point service distribution system - Google Patents
Packet microwave based multi-point service distribution system Download PDFInfo
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Abstract
The invention discloses a packet microwave based multi-point service distribution system, and belongs to the technical field of digital microwaves. The system can realize point-to-multipoint distribution and return in packet service. In the system, a root node is connected with upper equipment, a terminal node is connected with different types of packet service terminals, a relay node can be arranged to establish a relay route between the root node and the terminal node. Data transmission among the nodes is carried out via microwave channels, downlink is directly broadcast, and uplink uses multicarrier modulation technology to avoid co-frequency interference. The system can be widely applied to point-to-multipoint scenes including mobile base station return, enterprise private network access and city security guard system; compared with traditional point-to-point microwaves, the system is not limited by horizon transmission, and performance decrease caused by co-frequency interference can be avoided; and compared with a multipoint-to-point microwave scheme, the total equipment cost and the installation and maintenance cost are reduced greatly.
Description
Technical field
The present invention relates to digital microwave technology field, particularly relate to a kind of multipoint service compartment system based on packet microwave.
Background technology
Digital microwave telecommunication technical development so far, reaches its maturity stable, becomes outside optical fiber communication gradually, data communication means the most common.Microwave communication is applied in communication network, in the past only commonplace abroad, and is also more and more favored in telecom operators at home in recent years.Because of the OAM (Operations that its capacity is large, reliability is high and perfect; AdministrationandMaintenance; Operations, Administration and Maintenance) and the feature such as function of exchange, become rapidly important supplement and the salvo of optical fiber in convergence-level and transport layer network.
The feature of microwave equipment is that operating frequency is high, and wireless link decay is large, and serious by misty rain influence of fading, therefore general application is all point-to-point communication.By adopting the microwave antenna of high directivity in application, obtaining high-gain to compensate wireless link loss, obtaining enough fading margins.This is mainly applicable to long apart from point-to-point application, and the scene requirement more and more densification being transmitted to current business, becomes more meticulous, its restriction is apparent:
1, application scenarios looks gating condition complexity, and the restriction of microwave line-of-sight transmission will make bus station position increasingly difficult;
2, conventional microwave frequency range frequency spectrum resource is rare, and when intensive microwave is disposed, co-channel interference will be inevitable, and systematic function is had a strong impact on;
When 3, carrying out business transmission to multiple spot, need to take multiple business interface and the point-to-point equipment of multi-hop, with high costs.
Summary of the invention
For the drawback of the above current microwave equipment in service distribution application, the invention provides a kind of multipoint service compartment system based on packet microwave, realize point-to-multipoint distribution and the passback of Packet Service within the system.The present invention can be widely used in the point-to-multipoint scenes such as mobile base station passback, Enterprise Special Network access, city safety-protection system, compared with the point-to-point microwave of tradition, this system is not by the hydraulic performance decline that the restriction of line-of-sight transmission also can avoid co-channel interference to cause, the point-to-point microwave scheme of more bar simultaneously, equipment total cost and installation and maintenance cost all greatly reduce.
Based on a multipoint service compartment system for packet microwave, comprise successively from first line of a couplet equipment end to business end: root node, terminal node, via node and microwave channel;
Described root node, for accessing downlink business and broadcasting away upconverting to microwave frequency band after Business Processing;
Described via node, for receiving the microwave signal from root node, the service terminal transport service that a road connects for self, other roads are that the terminal node forwarding service of self subordinate is to send each service terminal be connected with described terminal node to by business;
Described terminal node, for receiving the microwave signal from root node or via node, and will send each service terminal be connected with described terminal node to after microwave signal recovery business;
Described root node is connected with first line of a couplet equipment, and described terminal node is connected with service terminal, and described via node is connected with terminal node or is connected with service terminal; Described root node, be connected by microwave channel between terminal node and via node, to complete service distribution between first line of a couplet equipment and service terminal and passback.
Wherein, described first line of a couplet equipment, comprising: transmission network equipment, larger switch, monitoring central server; Described service terminal, comprising: 2G/3G/LTE base station, router, monitoring information acquisition terminal.
Wherein, the connected mode of described first line of a couplet equipment and root node is that intelligent acess or category-5 cable access;
The connected mode of described via node or terminal node and service terminal is that intelligent acess or category-5 cable access.
Wherein, described business, comprises Packet Service; The concrete carrying of described business comprises mobile retransmission, broadband access, video monitoring;
The frequency range of described microwave channel is 6GHz to 40GHz.
Wherein, business transmission is carried out by setting up direct microwave channel between described root node and terminal node; Or by arranging that described via node carries out business transmission to set up indirect microwave channel.
Wherein, at the down link of described multipoint service compartment system, the whole bandwidth of the carrier occupancy channel that described root node is launched carrys out broadcasting service; In the up link of described multipoint service compartment system, the fractional bandwidth that the carrier wave that described terminal node/via node is launched takies a channel respectively carries out business passback;
The upstream radio-frequency bandwidth of described root node, terminal node and via node can software adjustment, thus within the scope of up total bandwidth, distribute the upstream bandwidth of each node.
Wherein, the up link of described multipoint service compartment system adopts multi-carrier modulation technology.
Wherein, described root node, comprises the first business interface unit, the first baseband processing unit, the first Transmit Receive Unit, the first main control unit, the first power supply unit, cover antenna;
Described first business interface unit, the first baseband processing unit, the first Transmit Receive Unit and cover antenna are in turn connected to form down link; Described cover antenna, the first Transmit Receive Unit, the first baseband processing unit, the first business interface unit are in turn connected to form up link; Described first main control unit is connected with the first business interface unit, the first baseband processing unit, the first Transmit Receive Unit respectively; Described first power supply unit is connected with the first business interface unit, the first baseband processing unit, the first Transmit Receive Unit respectively.
Wherein, described terminal node, comprises the second business interface unit, the second baseband processing unit, the second Transmit Receive Unit, the second main control unit, the second power supply unit, the second passback antenna;
Described second passback antenna, the second Transmit Receive Unit, the second baseband processing unit and the second business interface unit is in turn connected to form down link; Described second business interface unit, the second baseband processing unit, the second Transmit Receive Unit and the second passback antenna are in turn connected to form up link; Described second main control unit is connected with the second business interface unit, the second baseband processing unit, the second Transmit Receive Unit respectively; Described second power supply unit is connected with the second business interface unit, the second baseband processing unit, the second Transmit Receive Unit respectively.
Wherein, described via node, comprises the 3rd business interface unit, the 3rd baseband processing unit, the 3rd Transmit Receive Unit, the 3rd main control unit, the 3rd power supply unit, relaying Transmit-Receive Unit, the 3rd passback antenna, forwarding antenna;
Described 3rd passback antenna, the 3rd Transmit Receive Unit, the 3rd baseband processing unit, the 3rd business interface unit connect to form downlink reception link successively; What described 3rd baseband processing unit, relaying Transmit-Receive Unit and forwarding antenna were connected to form terminal node described in subordinate successively down forwards link; Described 3rd business interface unit, the 3rd baseband processing unit, the 3rd Transmit Receive Unit and the 3rd passback antenna are in turn connected to form up return link; Described forwarding antenna, relaying Transmit-Receive Unit, the 3rd baseband processing unit are connected to form the forwarded upstream link of terminal node described in subordinate successively; Described 3rd main control unit is connected with the 3rd business interface unit, the 3rd baseband processing unit, the 3rd Transmit Receive Unit, relaying Transmit-Receive Unit respectively; Described 3rd power supply unit is connected with the 3rd business interface unit, the 3rd baseband processing unit, the 3rd Transmit Receive Unit, relaying Transmit-Receive Unit respectively.
Beneficial effect:
A kind of multipoint service compartment system based on packet microwave of the present invention, comprises from first line of a couplet equipment end to business end: root node, terminal node, via node and microwave channel successively; Described root node, for accessing downlink business and broadcasting away upconverting to microwave frequency band after Business Processing; Described via node, for receiving the microwave signal from root node, the service terminal transport service that a road connects for self, other roads are that the terminal node forwarding service of self subordinate is to send each service terminal be connected with described terminal node to by business; Described terminal node, for receiving the microwave signal from root node or via node, and will send each service terminal be connected with described terminal node to after microwave signal recovery business; Described root node is connected with first line of a couplet equipment, and described terminal node is connected with service terminal, and described via node is connected with terminal node or service terminal; Described root node, be connected by microwave channel between terminal node and via node, to complete service distribution between first line of a couplet equipment and service terminal and passback.Technical solutions according to the invention can realize point-to-multipoint distribution and the passback of Packet Service.The present invention can be widely used in the point-to-multipoint scenes such as mobile base station passback, Enterprise Special Network access, city safety-protection system, compared with the point-to-point microwave of tradition, this system is not by the hydraulic performance decline that the restriction of line-of-sight transmission also can avoid co-channel interference to cause, the point-to-point microwave scheme of more bar simultaneously, equipment total cost and installation and maintenance cost all greatly reduce.
Accompanying drawing explanation
Fig. 1 is the composition frame chart of a kind of multipoint service compartment system based on packet microwave that the specific embodiment of the invention provides.
Fig. 2 is the built-in function block diagram of root node in Fig. 1.
Fig. 3 is the built-in function block diagram of terminal node in Fig. 1.
Fig. 4 is the built-in function block diagram of via node in Fig. 1.
Fig. 5 is the application schematic diagram of a kind of multipoint service compartment system based on packet microwave of providing of the specific embodiment of the invention in sleeve configuration service distribution scene.
Fig. 6 is the application schematic diagram of a kind of multipoint service compartment system based on packet microwave of providing of the specific embodiment of the invention in discrete type service distribution scene.
In figure:
100-root node; 200-terminal node; 300-via node;
101-first business interface unit; 102-first baseband processing unit; 103-first Transmit Receive Unit; 104-first main control unit; 105-first power supply unit; 106-cover antenna;
201-second business interface unit; 202-second baseband processing unit; 203-second Transmit Receive Unit; 204-second main control unit; 205-second power supply unit; 206-second returns antenna;
301-the 3rd business interface unit; 302-the 3rd baseband processing unit; 303-the 3rd Transmit Receive Unit; 304-the 3rd main control unit; 305-the 3rd power supply unit; 306-relaying Transmit-Receive Unit; 307-the 3rd returns antenna; 308-forwarding antenna.
Embodiment
Below in conjunction with accompanying drawing, complete description is carried out to the technical scheme in the present invention.
One, system specialization
Fig. 1 is the composition frame chart of a kind of multipoint service compartment system based on packet microwave that the specific embodiment of the invention provides.As shown in Figure 1, a kind of multipoint service compartment system based on packet microwave of the present invention, comprises from first line of a couplet equipment end to business end: root node 100, terminal node 200, via node 300 and microwave channel successively;
Described root node 100, for accessing downlink business and broadcasting away upconverting to microwave frequency band after Business Processing;
Described via node 300, for receiving the microwave signal from root node 100, the service terminal transport service that one tunnel connects for self, other roads are that terminal node 200 forwarding service of self subordinate is to send each service terminal be connected with described terminal node 200 to by business;
Described terminal node 200, for receiving the microwave signal from root node 100 or via node 300, and will send each service terminal be connected with described terminal node 200 to after microwave signal recovery business;
Described root node 100 is connected with first line of a couplet equipment, and described terminal node 200 is connected with service terminal, and described via node 300 is connected with terminal node 200 or is connected with service terminal; Described root node 100, be connected by microwave channel between terminal node 200 and via node 300, to complete service distribution between first line of a couplet equipment and service terminal and passback.
It should be noted that, according to actual scene needs, the via node 300 in system, terminal node 200 can have multiple, and the terminal node 200 of via node 300 subordinate also can have multiple.This diagram 1 is just described with the simplest representative example.Business accesses from root node 100, by microwave channel to each terminal node 200 distribution service.Wherein may because of transmission conditions restrictions such as stop, distances, can not set up the direct channels of root node 100 to some terminal node 200, now system can dispose via node 300, sets up the transmission that indirect channel carries out business.
Technical solutions according to the invention can realize point-to-multipoint distribution and the passback of Packet Service.The present invention can be widely used in the point-to-multipoint scenes such as mobile base station passback, Enterprise Special Network access, city safety-protection system, compared with the point-to-point microwave of tradition, this system is not by the hydraulic performance decline that the restriction of line-of-sight transmission also can avoid co-channel interference to cause, the point-to-point microwave scheme of more bar simultaneously, equipment total cost and installation and maintenance cost all greatly reduce.
In this programme, described first line of a couplet equipment, includes but not limited to: transmission network equipment, larger switch, monitoring central server; Described service terminal, includes but not limited to: 2G/3G/LTE base station, router, monitoring information acquisition terminal.Described transmission network equipment can be PTN device.
In this programme, the connected mode of described first line of a couplet equipment and root node 100 is that intelligent acess or category-5 cable access; Described via node 300 or terminal node 200 are that intelligent acess or category-5 cable access with the connected mode of service terminal.
In system, first line of a couplet equipment is connected by optical fiber/category-5 cable with root node 100; Root node 100 is connected by microwave channel with via node 300, terminal node 200; Due to distance or non line of sight reason between root node 100 and terminal node 200, direct microwave channel can not be set up, configuration is set up indirect microwave channel via via node 300 and is connected, and namely carries out business transmission by setting up direct microwave channel between described root node 100 and terminal node 200; Or by arranging that described via node 300 carries out business transmission to set up indirect microwave channel, then terminal node 200 is connected with the service terminal of subordinate by optical fiber/category-5 cable; Via node 300 also directly can be connected with the service terminal of subordinate by optical fiber/category-5 cable.
In this programme, described business, mainly refers to Packet Service; The information of the concrete carrying of described business includes but not limited to mobile retransmission, broadband access, video monitoring.The frequency range of described microwave channel is the traditional microwave frequency of 6GHz to 40GHz.
At the down link of described multipoint service compartment system, the whole bandwidth of the carrier occupancy channel that described root node 100 is launched carrys out broadcasting service; In the up link of described multipoint service compartment system, the fractional bandwidth that the carrier wave that described terminal node 200/ via node 300 is launched takies a channel respectively carries out business passback.The upstream radio-frequency bandwidth of described root node 100, terminal node 200 and via node 300 can software adjustment, thus within the scope of up total bandwidth, distribute the upstream bandwidth of each node.
The up link of described multipoint service compartment system adopts multi-carrier modulation technology.The up link of described multipoint service compartment system adopts multi-carrier modulation technology, and each road up-link carrier is mutually orthogonal, thus reduces between each road and disturb, and improves the availability of frequency spectrum, promotes up total bandwidth.
Two, each node specification
Fig. 2 is the built-in function block diagram of root node 100 in Fig. 1.As shown in Figure 2, described root node 100, comprises the first business interface unit 101, first baseband processing unit 102, first Transmit Receive Unit 103, first main control unit 104, first power supply unit 105, cover antenna 106;
Described first business interface unit 101, first baseband processing unit 102, first Transmit Receive Unit 103 and cover antenna 106 are in turn connected to form down link; Described cover antenna 106, first Transmit Receive Unit 103, first baseband processing unit 102, first business interface unit 101 is in turn connected to form up link; Described first main control unit 104 is connected with the first business interface unit 101, first baseband processing unit 102, first Transmit Receive Unit 103 respectively; Described first power supply unit 105 is connected with the first business interface unit 101, first baseband processing unit 102, first Transmit Receive Unit 103 respectively.
In down link, first line of a couplet equipment is sent to the Business Stream subpackage of each service terminal by root node 100, encapsulate framing with synchronizing information and other control commands simultaneously, wherein, described Business Stream divides according to service VLAN, carry out QAM modulation (QuadratureAmplitudeModulation, quadrature amplitude modulation), such as 256QAM, transmit with applicable wireless channel, carrier signal occupied bandwidth is the whole bandwidth of a channel, is then converted to transmitted microwave frequency and amplifying power, is broadcasted away by cover antenna 106.
In up link, cover antenna 106 receives the OFDM (OrthogonalFrequencyDivisionMultiplexing from each via node 300 and terminal node 200, i.e. orthogonal frequency division multiplexi) subcarrier, down-conversion after demodulation, carry out solution frame decoding and reduce every road uplink service stream, according to poll or weighting scheme, convergence service passes to first line of a couplet equipment from the first business interface unit 101.
Fig. 2 shows the composition frame chart of described root node 100.Wherein, the major function of each modular unit is as follows:
First business interface unit 101, provides the business interface to upstream first line of a couplet equipment, completes the access of Packet Service/feed out and exchange process.
First baseband processing unit 102, mainly completes the functions such as the encoding and decoding of baseband signal, framing and solution frame, wireless channel modulation and demodulation, base band and analog intermediate frequency conversion.
First Transmit Receive Unit 103, the intermediate frequency of main settling signal and the Up/Down Conversion of microwave and amplification, and transmission duplex isolation.
First main control unit 104, is mainly used in monitoring each functional module of whole node device, provides local clock, provide Man Machine Interface, and completes the remote monitoring to via node 300 and terminal node 200.
First power supply unit 105, for completing input power conversion, provides the operating voltage needed for each unit module.
Cover antenna 106, for sending descending microwave signal, receives up microwave signal.
Fig. 3 is the built-in function block diagram of terminal node 200 in Fig. 1.As shown in Figure 3, described terminal node 200, comprises the second business interface unit 201, second baseband processing unit 202, second Transmit Receive Unit 203, second main control unit 204, second power supply unit 205, second passback antenna 206;
Described second passback antenna 206, second Transmit Receive Unit 203, second baseband processing unit 202 and the second business interface unit 201 are in turn connected to form down link; Described second business interface unit 201, second baseband processing unit 202, second Transmit Receive Unit 203 and the second passback antenna 206 are in turn connected to form up link; Described second main control unit 204 is connected with the second business interface unit 201, second baseband processing unit 202, second Transmit Receive Unit 203 respectively; Described second power supply unit 205 is connected with the second business interface unit 201, second baseband processing unit 202, second Transmit Receive Unit 203 respectively.
The function of each unit module of described terminal node 200 divides similar to root node 100, and the service route in uplink downlink is contrary with service route in root node 100.
In down link, the second baseband processing unit 202 demodulation carrier signal, recovered clock passes to the second main control unit 204, distributes to each module as work clock; Recover control command and pass to the second main control unit 204, perform the remote operation instruction such as transmitting power adjustment, bandwidth adjustment, wherein, after the second main control unit 204 receives bandwidth adjustment instruction, control the up-link carrier that the second baseband processing unit 202 generates respective bandwidth; Recovery business passes to the port vlan that the second business interface unit 201, second business interface unit 201 is arranged according to user, the Business Stream of each VLAN is passed to each service terminal, and is abandoned by the Business Stream not belonging to self VLAN.
In up link, the business of access in the second baseband processing unit 202 with the Information encapsulation framing such as control response order, alarm report after, be modulated to the OFDM carrier wave (remaining bandwidth is the up use of other nodes) of the fractional bandwidth taking a channel, and after QAM modulation, pass to the second Transmit Receive Unit 203, after frequency conversion, be back to root node 100 from the second passback antenna 206.
Fig. 4 is the built-in function block diagram of via node 300 in Fig. 1.As shown in Figure 4, described via node 300, comprises the 3rd business interface unit 301, the 3rd baseband processing unit 302, the 3rd Transmit Receive Unit 303, the 3rd main control unit 304, the 3rd power supply unit 305, relaying Transmit-Receive Unit 306, the 3rd passback antenna 307, forwarding antenna 308;
Described 3rd passback antenna 307, the 3rd Transmit Receive Unit 303, the 3rd baseband processing unit 302, the 3rd business interface unit 301 connect to form downlink reception link successively; What described 3rd baseband processing unit 302, relaying Transmit-Receive Unit 306 and forwarding antenna 308 were connected to form terminal node 200 described in subordinate successively down forwards link; Described 3rd business interface unit 301, the 3rd baseband processing unit 302, the 3rd Transmit Receive Unit 303 and the 3rd passback antenna 307 are in turn connected to form up return link; Described forwarding antenna 308, relaying Transmit-Receive Unit 306, the 3rd baseband processing unit 302 are connected to form the forwarded upstream link of terminal node 200 described in subordinate successively; Described 3rd main control unit 304 is connected with the 3rd business interface unit 301, the 3rd baseband processing unit 302, the 3rd Transmit Receive Unit 303, relaying Transmit-Receive Unit 306 respectively; Described 3rd power supply unit 305 is connected with the 3rd business interface unit 301, the 3rd baseband processing unit 302, the 3rd Transmit Receive Unit 303, relaying Transmit-Receive Unit 306 respectively.
Described via node 300, as shown in Figure 4, except all modular units possessing terminal node 200, also be equipped with the situation only giving a road forward-path in one or more relaying Transmit-Receive Unit 306 and one or more forwarding antenna 308(diagram), there is provided transistroute, for receiving and dispatching the carrier wave of subordinate terminal node 200.
Wherein, the processing capacity of the 3rd baseband processing unit 302 needs is more complicated than terminal node 200.
Under treatment during industry business, after demodulation, be divided into receiver and conversion link.Receiver is consistent with terminal node 200 down link, recovers business and clock, control command with road, and does identical process.Baseband signal is modulated into intermediate frequency by conversion link again, via relaying Transmit-Receive Unit 306, is transmitted to subordinate terminal node 200 from forwarding antenna 308.
When processing up, from the uplink service of the 3rd business interface unit 301, and from the forwarded upstream business of relaying Transmit-Receive Unit 306, converge in the 3rd baseband processing unit 302, OFDM carrier signal is modulated into after encapsulation framing, after QAM modulation, pass to the 3rd Transmit Receive Unit 303, up-conversion, to microwave frequency band, returns root node 100 from the 3rd passback antenna 307.
Three, the choosing of antenna
The cover antenna 106 of root node 100 in the present invention can be integrated form, also can be separate type.In this example, cover antenna 106 adopts separate type.According to the characteristic distributions of service terminal, suitable cover antenna 106 can be chosen, reduce the configuration of via node 300, reach the object reducing cost of investment.
As shown in Figure 5, root node 100 adopts gain is large, wave beam is narrow high-performance parabolic microwave aerial as cover antenna 106, makes its coverage become sleeve configuration, is particularly suitable for the application scenarios of service terminal linearly shape distribution.Such as: high ferro, highway service coverage along the line, major urban arterial highway video monitoring passback etc.
As shown in Figure 6, root node 100 adopts wave beam is wide, gain is less trumpet type or back of the body chamber flat helical antenna as cover antenna 106, makes its coverage become oblate, to be applicable to the application scenarios that service terminal takes advantage of discrete shape to distribute.Such as: the mobile retransmission of street corner smallcell, base station, village, the wideband private wire access etc. of enterprise, factory.
The downlink traffic flow process of multipoint service compartment system of the present invention is as follows:
1, root node 100 accesses downlink business, after exchanging scheduling, encapsulation modulation, upconverts to microwave frequency band, is broadcasted away by cover antenna 106.The descending transmission signal of root node 100 takies the whole radio frequency bandwidth of a channel.
2, terminal node 200 receives the microwave signal from root node 100 or via node 300, after down-conversion, recovers business, and according to service VLAN, send the business packet belonged to together in a VLAN to each service terminal from the carrier signal received; Abandon the business packet of not to one's name affiliated VLAN.
3, via node 300 receives the microwave signal from root node 100, down-conversion after demodulation, in base band along separate routes, and the service terminal transport service (RX path) that a road connects for self, other roads are forwarded to self subordinate terminal node 200(forward-path).After RX path recovery business, and according to service VLAN, send the business packet belonged to together in a VLAN to each service terminal; Abandon the business packet of not to one's name affiliated VLAN.Forward-path is modulation signal again, is broadcast to one or more terminal nodes 200 of subordinate by forwarding antenna 308.
4, control command encapsulates together with downlink grouping traffic, is sent to each terminal node 200 and via node 300 by descending in-band channel.With the control command on road, comprise opposite end transmitting power and control, opposite end bandwidth adjustment etc.With the synchronised clock also having root node 100 to issue that business transmits, via node 300, terminal node 200 recover synchronised clock as work clock, thus realize the clock synchronous of each node of whole system.
The uplink service flows journey of multipoint service compartment system of the present invention is as follows:
1, the business of each service terminal is from terminal node or via node connecting system, and after encapsulation modulation, up-conversion is to microwave frequency band, is sent to root node 100 by passback antenna; Wherein and between root node 100, there is no the terminal node 200 of direct channels, then genus via node 300 is sent to.
2, via node 300 self directly can access passed-back traffic, also receives the microwave modulation signal from subordinate terminal node 200, through digital processing Hou He road.Multichannel uplink service encapsulates modulation after converging, and is sent to root node 100 through passback antenna.
3, root node 100 receives the microwave signal from terminal node 200 and via node 300, demodulation after down-conversion, decapsulation, and reduction business is also back to the first line of a couplet equipment of upstream.
4, the upward signal that in system, each via node 300, terminal node 200 send, adopts multi-carrier modulation, and the fractional bandwidth taking a channel sends.Its occupied bandwidth can pass through software adjustment, realizes the flexible allocation of each node upstream bandwidth.Each road upward signal that root node 100 receives is mutually orthogonal, can avoid intersymbol interference, effectively promotes uplink spectrum utilance.
5, control response order, active reporting encapsulate together with passback Packet Service, are recycled to root node 100 by up in-band channel.
For the described cover antenna 106 of root node 100, according to the characteristic distributions of terminal node 200, the antenna of Cover treatment shape can be adopted.Because up transmission adopts multi-carrier modulation, each road uplink sub-carrier of reception is mutually orthogonal, so there is not mutual interference in system.
For the described second passback antenna 206 of terminal node 200, because terminal node 200 only carries out point-to-point communication with a root node 100 or via node 300, the microwave antenna that wave beam is narrower can be adopted, to obtain higher transmission, receiving gain, and reduce the interference to other system.
For the described forwarding antenna 308 of via node 300, according to the number of via node 300 subordinate terminal node 200 and characteristic distributions, the microwave antenna of suitable covering shape can be chosen.
Obviously; described example is only wherein a kind of embodiment of the present invention; any based on the example in the present invention, those of ordinary skill in the art do not need to make various changes that creative work just can associate easily, extension, all belong to protection scope of the present invention.
Claims (10)
1. based on a multipoint service compartment system for packet microwave, it is characterized in that, comprise successively to business end from first line of a couplet equipment end: root node (100), terminal node (200), via node (300) and microwave channel;
Described root node (100), for accessing downlink business and broadcasting away upconverting to microwave frequency band after Business Processing;
Described via node (300), for receiving the microwave signal from root node (100), the service terminal transport service that one tunnel connects for self, other roads are that terminal node (200) forwarding service of self subordinate is to send each service terminal be connected with described terminal node (200) to by business;
Described terminal node (200), for receiving the microwave signal from root node (100) or via node (300), and will send each service terminal be connected with described terminal node (200) to after microwave signal recovery business;
Described root node (100) is connected with first line of a couplet equipment, and described terminal node (200) is connected with service terminal, and described via node (300) is connected with terminal node (200) or is connected with service terminal; Described root node (100), be connected by microwave channel between terminal node (200) and via node (300), to complete service distribution between first line of a couplet equipment and service terminal and passback.
2. a kind of multipoint service compartment system based on packet microwave according to claim 1, it is characterized in that, described first line of a couplet equipment, comprising: transmission network equipment, larger switch, monitoring central server; Described service terminal, comprising: 2G/3G/LTE base station, router, monitoring information acquisition terminal.
3. a kind of multipoint service compartment system based on packet microwave according to claim 1, is characterized in that, the connected mode of described first line of a couplet equipment and root node (100) is that intelligent acess or category-5 cable access;
Described via node (300) or terminal node (200) are that intelligent acess or category-5 cable access with the connected mode of service terminal.
4. a kind of multipoint service compartment system based on packet microwave according to claim 1, it is characterized in that, described business, comprises Packet Service; The concrete carrying of described business comprises mobile retransmission, broadband access, video monitoring;
The frequency range of described microwave channel is 6GHz to 40GHz.
5. a kind of multipoint service compartment system based on packet microwave according to claim 1, is characterized in that, carries out business transmission between described root node (100) and terminal node (200) by setting up direct microwave channel; Or by arranging that described via node (300) carries out business transmission to set up indirect microwave channel.
6. a kind of multipoint service compartment system based on packet microwave according to claim 1, it is characterized in that, at the down link of described multipoint service compartment system, the whole bandwidth of the carrier occupancy channel that described root node (100) is launched carrys out broadcasting service; In the up link of described multipoint service compartment system, the fractional bandwidth that the carrier wave that described terminal node (200)/via node (300) is launched takies a channel respectively carries out business passback;
The upstream radio-frequency bandwidth of described root node (100), terminal node (200) and via node (300) can software adjustment, thus within the scope of up total bandwidth, distribute the upstream bandwidth of each node.
7. a kind of multipoint service compartment system based on packet microwave according to claim 1, is characterized in that, the up link of described multipoint service compartment system adopts multi-carrier modulation technology.
8. a kind of multipoint service compartment system based on packet microwave according to claim 1, it is characterized in that, described root node (100), comprises the first business interface unit (101), the first baseband processing unit (102), the first Transmit Receive Unit (103), the first main control unit (104), the first power supply unit (105), cover antenna (106);
Described first business interface unit (101), the first baseband processing unit (102), the first Transmit Receive Unit (103) and cover antenna (106) are in turn connected to form down link; Described cover antenna (106), the first Transmit Receive Unit (103), the first baseband processing unit (102), the first business interface unit (101) are in turn connected to form up link; Described first main control unit (104) is connected with the first business interface unit (101), the first baseband processing unit (102), the first Transmit Receive Unit (103) respectively; Described first power supply unit (105) is connected with the first business interface unit (101), the first baseband processing unit (102), the first Transmit Receive Unit (103) respectively.
9. a kind of multipoint service compartment system based on packet microwave according to claim 1, it is characterized in that, described terminal node (200), comprises the second business interface unit (201), the second baseband processing unit (202), the second Transmit Receive Unit (203), the second main control unit (204), the second power supply unit (205), the second passback antenna (206);
Described second passback antenna (206), the second Transmit Receive Unit (203), the second baseband processing unit (202) and the second business interface unit (201) are in turn connected to form down link; Described second business interface unit (201), the second baseband processing unit (202), the second Transmit Receive Unit (203) and the second passback antenna (206) are in turn connected to form up link; Described second main control unit (204) is connected with the second business interface unit (201), the second baseband processing unit (202), the second Transmit Receive Unit (203) respectively; Described second power supply unit (205) is connected with the second business interface unit (201), the second baseband processing unit (202), the second Transmit Receive Unit (203) respectively.
10. a kind of multipoint service compartment system based on packet microwave according to claim 1, it is characterized in that, described via node (300), comprises the 3rd business interface unit (301), the 3rd baseband processing unit (302), the 3rd Transmit Receive Unit (303), the 3rd main control unit (304), the 3rd power supply unit (305), relaying Transmit-Receive Unit (306), the 3rd passback antenna (307), forwarding antenna (308);
Described 3rd passback antenna (307), the 3rd Transmit Receive Unit (303), the 3rd baseband processing unit (302), the 3rd business interface unit (301) connect to form downlink reception link successively; What described 3rd baseband processing unit (302), relaying Transmit-Receive Unit (306) and forwarding antenna (308) were connected to form terminal node described in subordinate (200) successively down forwards link; Described 3rd business interface unit (301), the 3rd baseband processing unit (302), the 3rd Transmit Receive Unit (303) and the 3rd passback antenna (307) are in turn connected to form up return link; Described forwarding antenna (308), relaying Transmit-Receive Unit (306), the 3rd baseband processing unit (302) are connected to form the forwarded upstream link of terminal node described in subordinate (200) successively; Described 3rd main control unit (304) is connected with the 3rd business interface unit (301), the 3rd baseband processing unit (302), the 3rd Transmit Receive Unit (303), relaying Transmit-Receive Unit (306) respectively; Described 3rd power supply unit (305) is connected with the 3rd business interface unit (301), the 3rd baseband processing unit (302), the 3rd Transmit Receive Unit (303), relaying Transmit-Receive Unit (306) respectively.
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