CN105072001B - A kind of multipoint service compartment system based on packet microwave - Google Patents
A kind of multipoint service compartment system based on packet microwave Download PDFInfo
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Abstract
The invention discloses a kind of multipoint service compartment system based on packet microwave, belongs to digital microwave technology field.This system can realize the point-to-multipoint distribution of Packet Service and passback.Root node is connected with first line of a couplet equipment in this system, is connected by terminal node with various Packet Service terminals, can also arrange that relay node establishes the transistroute between root node and terminal node.Carried out data transmission between each node by microwave channel, downlink is directly broadcasted, and uplink avoids co-channel interference using multi-carrier modulation technology.System of the present invention can be widely applied to the point-to-multipoints scenes such as mobile base station passback, Enterprise Special Network access, city security system, compared with the point-to-point microwave of tradition, system is not limited by line-of-sight transmission and can avoid the decline of performance caused by co-channel interference, more a plurality of point-to-point microwave scheme simultaneously, equipment totle drilling cost and installation maintenance cost are all greatly lowered.
Description
Technical field
The present invention relates to digital microwave technology fields more particularly to a kind of multipoint service based on packet microwave to be distributed system
System.
Background technique
Digital microwave telecommunication technology is developed so far, and reach its maturity stabilization, has been increasingly becoming except fiber optic communication, most commonly seen
Data communication means.Microwave communication is applied in telecommunication network, in the past only commonplace in foreign countries, and electric at home in recent years
It is also more and more favored in letter operator.Because its capacity is big, high reliablity and perfect OAM (Operations,
Administration and Maintenance, Operations, Administration and Maintenance) and the features such as function of exchange, rapidly become remittance
The important supplement and salvo of optical fiber in poly layer and transport layer network.
The characteristics of microwave equipment is working frequency height, and Radio Link decaying is big, serious by misty rain influence of fading therefore general
Application be all point-to-point communication.By using the microwave antenna of high directivity in, high-gain is obtained to compensate radio chains
Path loss consumption, obtains enough fading margins.This is primarily adapted for use in application point-to-point over long distances, and transmits to current business more next
More densification, fining scene requirement, limitation be obvious:
1, application scenarios view gating condition is complicated, and the limitation of microwave line-of-sight transmission will make bus station position increasingly difficult；
2, conventional microwave frequency range frequency spectrum resource is rare, and in intensive microwave deployment, co-channel interference will be inevitable, system
Performance is severely impacted；
3, when carrying out business transmission to multiple spot, need to occupy multiple business interfaces and the point-to-point equipment of multi-hop, it is with high costs.
Summary of the invention
For drawback of the current microwave equipment of the above in service distribution application, it is based on dividing the present invention provides one kind
The multipoint service compartment system of group microwave, realizes the point-to-multipoint distribution and passback of Packet Service within the system.The present invention
It can be widely applied to the point-to-multipoints scenes such as mobile base station passback, Enterprise Special Network access, city security system, it is point-to-point with tradition
Microwave is compared, which is not limited and be can avoid the decline of performance caused by co-channel interference, while more a plurality of point by line-of-sight transmission
To a microwave scheme, equipment totle drilling cost and installation maintenance cost are all greatly lowered.
A kind of multipoint service compartment system based on packet microwave successively includes: root section from first line of a couplet equipment end to business end
Point, terminal node, relay node and microwave channel；
The root node, for accessing downlink business and being broadcasted microwave frequency band is upconverted to after business processing；
The relay node, for receiving the microwave signal from root node, the service terminal that is connected all the way for itself
Transmission business, other roads are that the terminal node forwarding service of itself subordinate is connect with sending to business with the terminal node
Each service terminal；
The terminal node for receiving the microwave signal from root node or relay node, and microwave signal is restored
Send each service terminal connecting with the terminal node after business to；
The root node is connected with first line of a couplet equipment, and the terminal node is connected with service terminal, the relay node and end
End node is connected or is connected with service terminal；It is to pass through microwave channel between the root node, terminal node and relay node
It is connected, to complete the service distribution and passback between first line of a couplet equipment and service terminal.
Wherein, the first line of a couplet equipment, comprising: transmission network equipment, larger switch, monitoring central server；The business
Terminal, comprising: the base station 2G/3G/LTE, router, monitoring information acquisition terminal.
Wherein, the first line of a couplet equipment and the connection type of root node are that intelligent acess either category-5 cable accesses；
The connection type of the relay node or terminal node and service terminal is intelligent acess either category-5 cable access.
Wherein, the business, including Packet Service；The specific carrying of the business includes mobile retransmission, broadband access, view
Frequency monitors；
The frequency range of the microwave channel is 6GHz to 40GHz.
Wherein, business transmission is carried out by establishing direct microwave channel between the root node and terminal node；Or it is logical
It crosses and arranges the relay node to establish indirect microwave channel and carry out business transmission.
Wherein, in the downlink of the multipoint service compartment system, carrier occupancy one letter of the root node transmitting
The whole bandwidth in road carrys out broadcasting service；In the uplink of the multipoint service compartment system, the terminal node/relay node
The fractional bandwidth that the carrier wave of transmitting occupies a channel respectively carries out business passback；
The upstream radio-frequency bandwidth of the root node, terminal node and relay node can software adjustment, thus in the total band of uplink
The upstream bandwidth of each node of distribution in wide scope.
Wherein, the uplink of the multipoint service compartment system uses multi-carrier modulation technology.
Wherein, the root node, including the first business interface unit, the first baseband processing unit, the first radio-frequency receiving-transmitting list
Member, the first main control unit, the first power supply unit, covering antenna；
The first business interface unit, the first baseband processing unit, the first Transmit Receive Unit and covering antenna are successively
Connection forms downlink；The covering antenna, the first Transmit Receive Unit, the first baseband processing unit, the first business interface
Unit is in turn connected to form uplink；First main control unit respectively with the first business interface unit, the first Base-Band Processing
Unit, the connection of the first Transmit Receive Unit；First power supply unit respectively with the first business interface unit, the first Base-Band Processing
Unit, the connection of the first Transmit Receive Unit.
Wherein, the terminal node, including the second business interface unit, the second baseband processing unit, the second radio-frequency receiving-transmitting
Unit, the second main control unit, the second power supply unit, the second passback antenna；
The second passback antenna, the second Transmit Receive Unit, the second baseband processing unit and the second business interface unit
It is in turn connected to form downlink；The second business interface unit, the second baseband processing unit, the second Transmit Receive Unit and
Second passback antenna is in turn connected to form uplink；Second main control unit respectively with the second business interface unit, second
Baseband processing unit, the connection of the second Transmit Receive Unit；Second power supply unit respectively with the second business interface unit, second
Baseband processing unit, the connection of the second Transmit Receive Unit.
Wherein, the relay node, including third business interface unit, third baseband processing unit, third radio-frequency receiving-transmitting
Unit, third main control unit, third power supply unit, relaying Transmit-Receive Unit, third return antenna, forwarding antenna；
Third passback antenna, third Transmit Receive Unit, third baseband processing unit, third business interface unit according to
Secondary connection forms downlink reception link；The third baseband processing unit, relaying Transmit-Receive Unit and forwarding antenna are sequentially connected shape
Link is down forwarded at terminal node described in subordinate；The third business interface unit, third baseband processing unit, third are penetrated
Frequency Transmit-Receive Unit and third passback antenna are in turn connected to form uplink return link；The forwarding antenna, relaying Transmit-Receive Unit, the
Three baseband processing units are sequentially connected the forwarded upstream link to form terminal node described in subordinate；The third main control unit difference
It is connect with third business interface unit, third baseband processing unit, third Transmit Receive Unit, relaying Transmit-Receive Unit；Described
Three power supply units are single with third business interface unit, third baseband processing unit, third Transmit Receive Unit, relaying transmitting-receiving respectively
Member connection.
The utility model has the advantages that
A kind of multipoint service compartment system based on packet microwave of the present invention, from first line of a couplet equipment end to business end according to
Secondary includes: root node, terminal node, relay node and microwave channel；The root node, for accessing downlink business and by business
Microwave frequency band is upconverted to after processing to be broadcasted；The relay node, for receiving the microwave signal from root node, all the way
The service terminal transmission business connected for itself, other roads are the terminal node forwarding service of itself subordinate to transmit business
Give each service terminal of the terminal node connection；The terminal node comes from root node or relay node for receiving
Microwave signal, and each service terminal connecting with the terminal node will be sent to after microwave signal recovery business；It is described
Root node is connected with first line of a couplet equipment, and the terminal node is connected with service terminal, the relay node and terminal node or industry
Terminal of being engaged in is connected；It is to be connected between the root node, terminal node and relay node by microwave channel, to complete first line of a couplet equipment
Service distribution and passback between service terminal.Technical solutions according to the invention can be realized the point-to-multipoint of Packet Service
Distribution and passback.It is point-to-points to the composite can be widely applied to mobile base station passback, Enterprise Special Network access, city security system etc.
Point scene, compared with the point-to-point microwave of tradition, which is not limited by line-of-sight transmission and can avoid property caused by co-channel interference
It can decline, while more a plurality of point-to-point microwave scheme, equipment totle drilling cost and installation maintenance cost are all greatly lowered.
Detailed description of the invention
Fig. 1 is a kind of composition for multipoint service compartment system based on packet microwave that the specific embodiment of the invention provides
Block diagram.
Fig. 2 is the internal functional block diagram of root node in Fig. 1.
Fig. 3 is the internal functional block diagram of terminal node in Fig. 1.
Fig. 4 is the internal functional block diagram of relay node in Fig. 1.
Fig. 5 is a kind of multipoint service compartment system based on packet microwave of specific embodiment of the invention offer long and narrow
The application schematic diagram of type service distribution scene.
Fig. 6 is a kind of multipoint service compartment system based on packet microwave of specific embodiment of the invention offer discrete
The application schematic diagram of type service distribution scene.
In figure:
100- root node；200- terminal node；300- relay node；
101- the first business interface unit；The first baseband processing unit of 102-；The first Transmit Receive Unit of 103-；104-
One main control unit；The first power supply unit of 105-；106- covers antenna；
201- the second business interface unit；The second baseband processing unit of 202-；The second Transmit Receive Unit of 203-；204-
Two main control units；The second power supply unit of 205-；206- second returns antenna；
301- third business interface unit；302- third baseband processing unit；303- third Transmit Receive Unit；304-
Three main control units；305- third power supply unit；306- relays Transmit-Receive Unit；307- third returns antenna；308- forwarding antenna.
Specific embodiment
The technical solution in the present invention is completely described with reference to the accompanying drawing.
One, system explanation
Fig. 1 is a kind of composition for multipoint service compartment system based on packet microwave that the specific embodiment of the invention provides
Block diagram.As shown in Figure 1, a kind of multipoint service compartment system based on packet microwave of the present invention, from first line of a couplet equipment end to
Business end successively includes: root node 100, terminal node 200, relay node 300 and microwave channel；
The root node 100, for accessing downlink business and being broadcasted microwave frequency band is upconverted to after business processing；
The relay node 300, for receiving the microwave signal from root node 100, the industry that is connected all the way for itself
Terminal of being engaged in transmits business, other roads are 200 forwarding service of terminal node of itself subordinate to send and the terminal business to
Each service terminal that node 200 connects；
The terminal node 200, for receiving the microwave signal from root node 100 or relay node 300, and by microwave
Send each service terminal connecting with the terminal node 200 after signal recovery business to；
The root node 100 is connected with first line of a couplet equipment, and the terminal node 200 is connected with service terminal, the relaying section
Point 300 is connected with terminal node 200 or is connected with service terminal；The root node 100, terminal node 200 and relay node
It is to be connected between 300 by microwave channel, to complete the service distribution and passback between first line of a couplet equipment and service terminal.
It should be noted that relay node 300, terminal node 200 in system can have more according to actual scene needs
A, the terminal node 200 of 300 subordinate of relay node can also have multiple.This diagram 1 is only with representative most simple example
It is illustrated.Business is accessed from root node 100, by microwave channel to each 200 distribution service of terminal node.It wherein may be because
The transmission conditions limitation such as blocking, distance, cannot establish the direct channels of root node 100 to certain terminal nodes 200, at this time system
Relay node 300 can be disposed, the transmission that indirect channel carries out business is established.
Technical solutions according to the invention can be realized the point-to-multipoint distribution and passback of Packet Service.The present invention can be wide
It is general to be applied to the point-to-multipoints scenes such as mobile base station passback, Enterprise Special Network access, city security system, with the point-to-point microwave of tradition
It compares, which is not limited by line-of-sight transmission and can avoid the decline of performance caused by co-channel interference, while more a plurality of point-to-point
Microwave scheme, equipment totle drilling cost and installation maintenance cost are all greatly lowered.
In the present solution, the first line of a couplet equipment, including but not limited to: transmission network equipment, larger switch, monitoring center take
Business device；The service terminal, including but not limited to: the base station 2G/3G/LTE, router, monitoring information acquisition terminal.The transmission
Net equipment can be PTN device.
In the present solution, the first line of a couplet equipment and the connection type of root node 100 are that intelligent acess either category-5 cable connects
Enter；The connection type of the relay node 300 or terminal node 200 and service terminal is that intelligent acess either category-5 cable connects
Enter.
In system, first line of a couplet equipment is connected with root node 100 by optical fiber/category-5 cable；Root node 100 and relay node 300,
Terminal node 200 is connected by microwave channel；Between root node 100 and terminal node 200 due to distance or non line of sight, no
Direct microwave channel can be established, configuration establishes indirect microwave channel via relay node 300 and is connected, i.e., the described root node 100
Business transmission is carried out by establishing direct microwave channel between terminal node 200；Or by arranging the relay node 300
Business transmission is carried out to establish indirect microwave channel, then terminal node 200 passes through the service terminal of optical fiber/category-5 cable and subordinate
It is connected；Relay node 300 can also be directly connected with the service terminal of subordinate by optical fiber/category-5 cable.
In the present solution, the business, is primarily referred to as Packet Service；The information of the business specifically carried includes but not
It is limited to mobile retransmission, broadband access, video monitoring.The frequency range of the microwave channel is the traditional microwave frequency of 6GHz to 40GHz.
In one channel of carrier occupancy that the downlink of the multipoint service compartment system, the root node 100 emit
Whole bandwidth carry out broadcasting service；In the uplink of the multipoint service compartment system, the relaying of terminal node 200/ section
The fractional bandwidth that the carrier wave of 300 transmitting of point occupies a channel respectively carries out business passback.The root node 100, terminal node
200 and relay node 300 upstream radio-frequency bandwidth can software adjustment, to distribute the upper of each node within the scope of uplink total bandwidth
Row bandwidth.
The uplink of the multipoint service compartment system uses multi-carrier modulation technology.The multipoint service compartment system
Uplink use multi-carrier modulation technology, each road up-link carrier is mutually orthogonal, to interfere between reducing each road, improves frequency spectrum
Utilization rate promotes uplink total bandwidth.
Two, each node specification
Fig. 2 is the internal functional block diagram of root node 100 in Fig. 1.As shown in Fig. 2, the root node 100, including the first industry
Business interface unit 101, the first baseband processing unit 102, the first Transmit Receive Unit 103, the first main control unit 104, first supply
Electric unit 105, covering antenna 106；
The first business interface unit 101, the first baseband processing unit 102, the first Transmit Receive Unit 103 and covering
Antenna 106 is in turn connected to form downlink；The covering antenna 106, the first Transmit Receive Unit 103, the first Base-Band Processing
Unit 102, the first business interface unit 101 are in turn connected to form uplink；First main control unit 104 is respectively with first
Business interface unit 101, the first baseband processing unit 102, the connection of the first Transmit Receive Unit 103；First power supply unit
105 connect with the first business interface unit 101, the first baseband processing unit 102, the first Transmit Receive Unit 103 respectively.
In downlink, first line of a couplet equipment is sent to the Business Stream subpackage of each service terminal by root node 100, at the same with it is same
It walks information and other control commands encapsulates framing, wherein the Business Stream is divided according to service VLAN, and QAM modulation is carried out
(Quadrature Amplitude Modulation, quadrature amplitude modulation), such as 256QAM, to be suitble to wireless channel transmission,
Carrier signal occupied bandwidth is the whole bandwidth of a channel, is then converted to transmitted microwave frequency and amplifying power, is led to
Covering antenna 106 is crossed to be broadcasted.
In uplink, covering antenna 106 receives the OFDM from each relay node 300 and terminal node 200
(Orthogonal Frequency Division Multiplexing, i.e. orthogonal frequency division multiplexi) subcarrier, down coversion
And after demodulating, the every road uplink service stream of frame decoding decoded back is carried out, according to poll or weighting scheme, convergence service is from the first business
Interface unit 101 is transmitted to first line of a couplet equipment.
Fig. 2 shows the composition block diagrams of the 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, complete the access of Packet Service/
It feeds out and exchange is handled.
First baseband processing unit 102, main encoding and decoding, framing and the frame decoding for completing baseband signal, wireless channel modulation
With demodulation, base band and analog intermediate frequency conversion etc. functions.
First Transmit Receive Unit 103, Up/Down Conversion and the amplification of the main intermediate frequency and microwave for completing signal, and transmitting-receiving are double
Work isolation.
First main control unit 104 is mainly used for monitoring each functional module of entire node device, provides local clock, provide
Man-machine interactive interface, and complete the long-range monitoring to relay node 300 and terminal node 200.
First power supply unit 105, for completing input power conversion, operating voltage needed for providing each unit module.
Antenna 106 is covered, for sending downlink microwave signal, receives uplink microwave signal.
Fig. 3 is the internal functional block diagram of terminal node 200 in Fig. 1.As shown in figure 3, the terminal node 200, including the
Two business interface units 201, the second baseband processing unit 202, the second Transmit Receive Unit 203, the second main control unit 204,
Two power supply units 205, second return antenna 206；
The second passback antenna 206, the second Transmit Receive Unit 203, the second baseband processing unit 202 and the second business
Interface unit 201 is in turn connected to form downlink；The second business interface unit 201, the second baseband processing unit 202,
Second Transmit Receive Unit 203 and the second passback antenna 206 are in turn connected to form uplink；Second main control unit 204
It is connect respectively with the second business interface unit 201, the second baseband processing unit 202, the second Transmit Receive Unit 203；Described
Two power supply units 205 respectively with the second business interface unit 201, the second baseband processing unit 202, the second Transmit Receive Unit
203 connections.
The function division of each unit module of the terminal node 200 is similar to root node 100, the industry in uplink downlink
Business flow direction is opposite with service route in root node 100.
In downlink, 202 demodulation carrier signal of the second baseband processing unit, recovered clock is transmitted to the second main control unit
204, each module is distributed to as work clock；Restore control command and be transmitted to the second main control unit 204, executes transmission power tune
The remote operation instructions such as whole, bandwidth adjustment, wherein after the second main control unit 204 receives bandwidth adjustment instruction, control the second base band
The up-link carrier of the generation respective bandwidth of processing unit 202；Recovery business is transmitted to the second business interface unit 201, and the second business connects
The Business Stream of each VLAN is transmitted to each service terminal according to the port vlan of user setting by mouth unit 201, and will not belong to certainly
The Business Stream of body VLAN abandons.
In uplink, the business of access is in the second baseband processing unit 202 with control response order, alarm report etc.
After Information encapsulation framing, be modulated to occupy a channel fractional bandwidth OFDM carrier wave (remaining bandwidth be other node uplinks
Using), and after QAM modulation, it is transmitted to the second Transmit Receive Unit 203, is back to root section from the second passback antenna 206 after frequency conversion
Point 100.
Fig. 4 is the internal functional block diagram of relay node 300 in Fig. 1.As shown in figure 4, the relay node 300, including the
Three business interface units 301, third baseband processing unit 302, third Transmit Receive Unit 303, third main control unit 304,
Three power supply units 305, relaying Transmit-Receive Unit 306, third return antenna 307, forwarding antenna 308；
The third returns antenna 307, third Transmit Receive Unit 303, third baseband processing unit 302, third business
Interface unit 301 is sequentially connected composition downlink reception link；The third baseband processing unit 302, relaying Transmit-Receive Unit 306 and
Forwarding antenna 308 be sequentially connected to form terminal node 200 described in subordinate down forward link；The third business interface unit
301, third baseband processing unit 302, third Transmit Receive Unit 303 and third passback antenna 307 are in turn connected to form uplink
Return link；The forwarding antenna 308, relaying Transmit-Receive Unit 306, third baseband processing unit 302 are sequentially connected to form subordinate
The forwarded upstream link of the terminal node 200；The third main control unit 304 respectively with third business interface unit 301,
Three baseband processing units 302, third Transmit Receive Unit 303, relaying Transmit-Receive Unit 306 connect；The third power supply unit 305
It is single with third business interface unit 301, third baseband processing unit 302, third Transmit Receive Unit 303, relaying transmitting-receiving respectively
Member 306 connects.
The relay node 300, as shown in figure 4, being also equipped with one in addition to all modular units for having terminal node 200
The feelings of forward-path all the way are only gived in a or multiple relaying Transmit-Receive Units 306 and one or more forwarding antenna 308(diagram
Condition), transistroute is provided, for receiving and dispatching the carrier wave of subordinate terminal node 200.
Wherein, the processing function that third baseband processing unit 302 needs is more complicated than terminal node 200.
When industry is engaged under treatment, it is divided into receives link and conversion link after demodulation.Under receives link and terminal node 200
Line link is consistent, restores business and the clock with road, control command, and do identical processing.Conversion link is by baseband signal weight
It newly is modulated into intermediate frequency, via relaying Transmit-Receive Unit 306, is transmitted to subordinate terminal node 200 from forwarding antenna 308.
When handling uplink, the uplink service from third business interface unit 301, and from relaying Transmit-Receive Unit 306
Forwarded upstream business, converged in third baseband processing unit 302, encapsulate framing after be modulated into OFDM carrier signal, through QAM
Third Transmit Receive Unit 303 is transmitted to after modulation, up-conversion to microwave frequency band returns root node from third passback antenna 307
100。
Three, the selection of antenna
The covering antenna 106 of root node 100, can be integrated form, is also possible to separate type in the present invention.This example
In, covering antenna 106 is using separate type.Suitable covering antenna 106 can be chosen according to the characteristic distributions of service terminal,
The configuration for reducing relay node 300 achievees the purpose that reduce cost of investment.
As shown in figure 5, root node 100 is using the high-performance parabolic microwave aerial that gain is big, wave beam is narrow as covering day
Line 106, makes its coverage area at sleeve configuration, the application scenarios particularly suitable for the linear distribution of service terminal.Such as: it is high
Service coverage along iron, highway, major urban arterial highway video monitoring passback etc..
As shown in fig. 6, root node 100 wide, the lesser trumpet type of gain or back chamber flat helical antenna conduct using wave beam
Antenna 106 is covered, makes its coverage area at oblateness, to be suitable for the application scenarios that service terminal multiplies discrete shape distribution.Such as:
Street corner small cell, village base station mobile retransmission, enterprise, factory wideband private wire access etc..
The downlink traffic process of multipoint service compartment system of the present invention is as follows:
1, root node 100 accesses downlink business, after exchange scheduling, encapsulation modulation, upconverts to microwave frequency band, passes through
Covering antenna 106 is broadcasted.The downlink of root node 100 sends the entire radio frequency bandwidth that signal occupies a channel.
2, terminal node 200 receives the microwave signal from root node 100 or relay node 300, after down coversion, from reception
Carrier signal in restore business, and according to service VLAN, it is whole to send the business packet belonged in a VLAN to each business
End；Abandon the business packet for being not belonging to oneself affiliated VLAN.
3, relay node 300 receives the microwave signal from root node 100, down coversion and after demodulating, in base band branch, one
The service terminal that road is connect for itself transmits business (RX path), other roads are forwarded to itself subordinate terminal node 200(forwarding
Path).After RX path recovery business, and according to service VLAN, the business packet belonged in a VLAN is sent to each industry
Business terminal；Abandon the business packet for being not belonging to oneself affiliated VLAN.Forward-path re-modulates signal, wide by forwarding antenna 308
It broadcasts to one or more terminal nodes 200 of subordinate.
4, control command encapsulates together with downlink grouping traffic, is sent to each terminal node 200 by downlink in-band channel
With relay node 300.With the control command on road, including opposite end transmission power control, opposite end bandwidth adjustment etc..With business transmission
There are also the synchronised clock that root node 100 issues, relay node 300, terminal node 200 restore synchronised clock as work clock,
Clock to realize each node of whole system is synchronous.
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 relay node access system, and up-conversion is to micro- after encapsulation modulation
Wave frequency section is sent to root node 100 by returning antenna；There is no the terminal node of direct channels between root node 100 wherein
200, then it is sent to and belongs to relay node 300.
2, relay node 300 itself can be directly accessed passed-back traffic, also microwave of the reception from subordinate terminal node 200
Modulated signal is combined after digital processing.Multichannel uplink service converges post package modulation, is returned antenna and is sent to root node
100。
3, root node 100 receives the microwave signal from terminal node 200 and relay node 300, demodulation, solution after down coversion
Encapsulation, reduction business and the first line of a couplet equipment for being back to upstream.
4, the uplink signal that each relay node 300, terminal node 200 are sent in system is occupied using multi-carrier modulation
The fractional bandwidth of one channel is sent.Its occupied bandwidth can realize flexibly dividing for each node upstream bandwidth by software adjustment
Match.Each road uplink signal that root node 100 receives is mutually orthogonal, the upper line frequency of avoidable intersymbol interference, effectively promotion
Compose utilization rate.
5, control response order, active reporting encapsulate together with passback Packet Service, are recycled to by uplink in-band channel
Root node 100.
It, can be according to the characteristic distributions of terminal node 200, using difference for the covering antenna 106 of root node 100
Cover the antenna of shape.Multi-carrier modulation is used because uplink is sent, received each road uplink sub-carrier is mutually orthogonal, so system
It is interior that there is no interfere with each other.
For terminal node 200 it is described second passback antenna 206, because terminal node 200 only with a root node 100 or
Relay node 300 carries out point-to-point communication, the microwave antenna that wave beam can be used narrower, is increased with obtaining higher transmission, receiving
Benefit, and reduce the interference to other systems.
It, can be according to 300 subordinate terminal node 200 of relay node for the forwarding antenna 308 of relay node 300
Number and characteristic distributions choose the microwave antenna of suitable covering shape.
Obviously, described example is only one of specific embodiment of the invention, any based in the present invention
Example, those of ordinary skill in the art are not required to make the various change that creative work can associate easily, extend, belong to
In protection scope of the present invention.
Claims (7)
1. a kind of multipoint service compartment system based on packet microwave, which is characterized in that successively from first line of a couplet equipment end to business end
It include: root node (100), terminal node (200), relay node (300) and microwave channel；
The root node (100), for accessing downlink business and being broadcasted microwave frequency band is upconverted to after business processing；
The relay node (300), for receiving the microwave signal from root node (100), the industry connected all the way for itself
Terminal of being engaged in transmits business, other roads are terminal node (200) forwarding service of itself subordinate to send and the end business to
Each service terminal of end node (200) connection；
The terminal node (200), for receiving the microwave signal from root node (100) or relay node (300), and will be micro-
The each service terminal connecting with the terminal node (200) is sent to after wave signal recovery business；
The root node (100) is connected with first line of a couplet equipment, and the terminal node (200) is connected with service terminal, the relaying section
Point (300) is connected with terminal node (200) or is connected with service terminal；The root node (100), terminal node (200) and
Be between relay node (300) by microwave channel be connected, with complete the service distribution between first line of a couplet equipment and service terminal with
Passback；
The first line of a couplet equipment, comprising: transmission network equipment, larger switch, monitoring central server；The service terminal, comprising:
The base station 2G/3G/LTE, router, monitoring information acquisition terminal；
The first line of a couplet equipment and the connection type of root node (100) are that intelligent acess either category-5 cable accesses；
The connection type of the relay node (300) or terminal node (200) and service terminal is intelligent acess either five classes
Line access；
Business transmission is carried out by establishing direct microwave channel between the root node (100) and terminal node (200)；Or it is logical
It crosses and arranges the relay node (300) to establish indirect microwave channel and carry out business transmission.
2. a kind of multipoint service compartment system based on packet microwave according to claim 1, which is characterized in that the industry
Business, including Packet Service；The specific carrying of the business includes mobile retransmission, broadband access, video monitoring；
The frequency range of the microwave channel is 6GHz to 40GHz.
3. a kind of multipoint service compartment system based on packet microwave according to claim 1, which is characterized in that described
The whole bandwidth of the downlink of multipoint service compartment system, one channel of carrier occupancy of root node (100) transmitting is come
Broadcasting service；In the uplink of the multipoint service compartment system, the terminal node (200)/relay node (300) transmitting
Carrier wave occupy respectively a channel fractional bandwidth carry out business passback；
The upstream radio-frequency bandwidth of the root node (100), terminal node (200) and relay node (300) can software adjustment, thus
The upstream bandwidth of each node is distributed within the scope of uplink total bandwidth.
4. a kind of multipoint service compartment system based on packet microwave according to claim 1, which is characterized in that described more
The uplink of point service distribution system uses multi-carrier modulation technology.
5. a kind of multipoint service compartment system based on packet microwave according to claim 1, which is characterized in that described
Node (100), including 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), covering antenna (106)；
It the first business interface unit (101), the first baseband processing unit (102), the first Transmit Receive Unit (103) and covers
Lid antenna (106) is in turn connected to form downlink；The covering antenna (106), the first Transmit Receive Unit (103), first
Baseband processing unit (102), the first business interface unit (101) are in turn connected to form uplink；First main control unit
(104) respectively with the first business interface unit (101), the first baseband processing unit (102), the first Transmit Receive Unit (103)
Connection；First power supply unit (105) respectively with the first business interface unit (101), the first baseband processing unit (102),
First Transmit Receive Unit (103) connection.
6. a kind of multipoint service compartment system based on packet microwave according to claim 1, which is characterized in that the end
End node (200), including 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)；
Second passback antenna (206), the second Transmit Receive Unit (203), the second baseband processing unit (202) and the second industry
Business interface unit (201) is in turn connected to form downlink；The second business interface unit (201), the second Base-Band Processing list
First (202), the second Transmit Receive Unit (203) and the second passback antenna (206) are in turn connected to form uplink；Described second
Main control unit (204) respectively with the second business interface unit (201), the second baseband processing unit (202), the second radio-frequency receiving-transmitting list
First (203) connection；Second power supply unit (205) respectively with the second business interface unit (201), the second baseband processing unit
(202), the second Transmit Receive Unit (203) connects.
7. a kind of multipoint service compartment system based on packet microwave according to claim 1, which is characterized in that in described
After node (300), including third business interface unit (301), third baseband processing unit (302), third Transmit Receive Unit
(303), third main control unit (304), third power supply unit (305), relaying Transmit-Receive Unit (306), third return antenna
(307), forwarding antenna (308)；
The third returns antenna (307), third Transmit Receive Unit (303), third baseband processing unit (302), third industry
Business interface unit (301) is sequentially connected composition downlink reception link；The third baseband processing unit (302), relaying transmitting-receiving are single
First (306) and forwarding antenna (308) be sequentially connected to form terminal node described in subordinate (200) down forward link；Described
Three business interface units (301), third baseband processing unit (302), third Transmit Receive Unit (303) and third return antenna
(307) it is in turn connected to form uplink return link；The forwarding antenna (308), relaying Transmit-Receive Unit (306), at third base band
Reason unit (302) is sequentially connected the forwarded upstream link to form terminal node described in subordinate (200)；The third main control unit
(304) respectively with third business interface unit (301), third baseband processing unit (302), third Transmit Receive Unit (303),
Relay Transmit-Receive Unit (306) connection；The third power supply unit (305) respectively with third business interface unit (301), third base
Tape handling unit (302), third Transmit Receive Unit (303), relaying Transmit-Receive Unit (306) connection.
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| CN201682618U (en) * | 2010-03-25 | 2010-12-22 | 京信通信系统（中国）有限公司 | Microwave integrated coverage equipment |
| CN101924702A (en) * | 2010-08-26 | 2010-12-22 | 华为技术有限公司 | Service data transmission method and device |
| US8880061B2 (en) * | 2010-12-30 | 2014-11-04 | Zte (Usa) Inc. | Enabling handoff for multiple packet data network connections |
| CN102855697B (en) * | 2012-09-20 | 2015-01-21 | 上海微肯网络科技有限公司 | Integrated circuit (IC) card with debit-credit business data interface for load and load achieving method |
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