CN105490717B - Aerospace systems based on ultra wide band millimeter wave wireless communication - Google Patents
Aerospace systems based on ultra wide band millimeter wave wireless communication Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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Abstract
The invention discloses a kind of aerospace systems based on ultra wide band millimeter wave wireless communication, the channel propagation characteristics of millimeter wave and the advantage of ultra wide band High Data Rate are utilized, provide a kind of new application of millimetre-wave attenuator, in system for needing high speed data transfer, outer space acquisition tracking system, multiple-target system, ground sea land combat system and certain satellite load systems etc..Ultra wide band millimeter wave wireless communications method can provide the data transmission of high speed, instead of wired connection original in system, for example optical fiber, cable or data line etc..Meanwhile the communication construction and communication protocol of millimetre-wave attenuator method are provided in conjunction with the structure, layout and performance requirement of system, optimize the structure of original system, lifting system performance is conducive to system extension and application.
Description
Technical field
The invention belongs to wireless communication fields and defence clcctronic information technology field, are based on ultra wide band more particularly to one kind
The aerospace systems of millimeter wave wireless communication.
Background technique
With the rise of intelligent terminal and enriching for wireless data application business, the data user in wireless communication system
Number greatly increases, and wireless network traffic is caused to show the situation of explosive growth.Root is it was predicted that coming 10 years wireless data industry
Business will increase 500-1000 times, and more stringent requirements are proposed for this network capacity to the following mobile broadband communication system.Therefore, on
Gbps user experience rate, tens of Gbps peak rates are the significant challenges of cordless communication network.Promote wireless communication system net
There are many ways to network capacity, main includes promoting spectrum efficiency, increasing network density, increase available system frequency band etc..Currently,
In 5G mobile communication system, industry focus of attention is had become in terms of increasing available system frequency band.
Available frequency spectrum in the 3GHz that the fast development of mobile communication makes nature of radio propagation relatively good frequency band below
Resource is very rare, but has 252GHz's in 3GHz~300GHz frequency band (wavelength is referred to as millimeter wave from 1 to 100mm) range
Frequency spectrum resource can use, and usable spectrum resource is 200 times or more of current 3GHz or less usable spectrum resource.Therefore, such as
What is highly to think deeply using the design that the channel propagation characteristics within the scope of this partial-band carry out mobile broadband communication system
's.Wherein the unlicensed band of 60GHz due to absorbability of the oxygen to electromagnetic wave it is stronger, it is logical to be suitable only for short-distance wireless
Letter, 802.11ad has formulated the standard of the frequency range at present, high using the 60GHz frequency spectrum for possessing the unallocated frequency range of 57~66GHz
Frequency carrier wave.The frequency band of 164-200GHz is influenced by water vapor absorption, is had serious rain to decline, is also only suitable for short haul connection.
Usually everybody thinks that free-space propagation loss depends on frequency, and frequency is higher, is lost bigger.But the conclusion
The premise of establishment is that the received effective area of antenna depends on frequency, and frequency is higher, and effective area is smaller.In view of on unit area
The antenna number that can be put is inversely proportional with frequency, so it is higher to carry out wave beam forming acquisition by more antennas in high band
Gain.For millimetre-wave attenuator, studies have shown that using the outdoor base of millimeter wave frequency band compared to 3GHz frequency range below
Signal of standing is lost very big when penetrating certain construction materials (brick, concrete etc.), reaches a dB up to a hundred；Simultaneously for millimeter
Vegetation penetration loss is also very big for wave communication；For 3GHz frequency range below, it is logical to millimeter wave that rain declines and oxygen declines
The influence of letter is also big.When millimeter wave is propagated in actual wireless communications environment, there are reflections and diffraction, form multipath, limitation
The spread scope of millimeter wave and the use in non line of sight transmitting scene.Doppler frequency shift depends on the movement speed of user
And working carrier frequency, for low-frequency range, millimetre-wave attenuator will form biggish Doppler frequency shift spreading range.Therefore, exist
Millimetre-wave attenuator is the supplement for covering communication on a large scale to low-frequency range, needs to examine mainly as auxiliary frequency range in 5G communication system
Consider millimeter wave propagation characteristic and rationally designs usage scenario and communication system, framework etc..
It is carried in such as outer space acquisition tracking system, multiple-target system, ground sea land combat system and certain satellites
In G system, need to carry out high speed data transfer, the methods of being used in these systems at present or optical fiber, cable or wiring into
Row high speed data transfer, referring to Fig.1.Referring to Fig.1, system includes central processing unit and more for above system its basic structure for simplifying
A subsystem needs to carry out data transmission and the subsystem of high speed by optical fiber or cable between central processing unit and subsystem
Need to carry out wired high-speed transfer etc. between system, wired use limits the extension of system, the design of structure and increases
The weight etc. of system, is especially routed when system complex complicated, and the structure of system and application are significantly limited.
Summary of the invention
The purpose of the present invention is to provide a kind of millimetre-wave attenuator methods applied in aerospace systems, through the invention may be used
The communication that internal system is realized in a manner of realizing in aerospace systems through wireless connection eliminates optical cable during system is set up
Lay work, reduce the weight of system design difficulty and system, be conducive to the extension and a variety of applications of system, promoted
The performance of system, increases the flexibility ratio of system.
In order to solve the above technical problems, the present invention provides a kind of aerospace systems based on ultra wide band millimeter wave wireless communication
System, including system equipment and communicating wireless signals subsystem；
Communicating wireless signals subsystem includes the first millimetre-wave attenuator equipment and the second millimetre-wave attenuator equipment to match；
System equipment includes central processor equipment and subsystem terminal；
Central processor equipment and the first millimetre-wave attenuator equipment are connected, the second millimetre-wave attenuator equipment and subsystem terminal
It is connected, passes through the first millimetre-wave attenuator equipment and the second millimetre-wave attenuator equipment between central processor equipment and subsystem terminal
Between wireless network communicated.
Preferably, radio communication subsystem uses two layers of Communication Protocol Model, Communication Protocol Model includes physical layer
With subsystem access layer, physical layer for code and decode, the synchronization of modulation and demodulation, frequency time, signal mapping；Subsystem
Access layer is responsible for distinguishing between each subsystem, data framing, physical addressing, Error Control, flow control and each subsystem
It is synchronous.
Preferably, the first millimetre-wave attenuator equipment is equipped with N number of sector, N is the integer more than or equal to 1；Each
The frequency spectrum resource of sector configuration is different.
Preferably, central processor equipment can control the first millimetre-wave attenuator equipment to all second millimetre-wave attenuators
Equipment sends broadcast singal；
Broadcast singal includes sector number, timestamp, control information and data information；
It controls information and is used for control subsystem terminal operating, data information is what central processing unit was sent to subsystem terminal
Data.
Preferably, central processor equipment can control the first millimetre-wave attenuator equipment to the second millimetre-wave attenuator equipment
Send the first signal of communication；
First signal of communication includes sector number, timestamp, subsystem terminal number and the communication information；
Subsystem terminal is numbered for distinguishing subsystem terminal；Data information is that central processing unit is sent to subsystem terminal
Data；
Subsystem terminal is matched according to subsystem terminal number, if the son in subsystem terminal and the first signal of communication
System terminal number matches, and subsystem terminal executes the data information in the first signal of communication；If misfitting, ignore first
Signal of communication.
It is sent out preferably, subsystem terminal can control the second millimetre-wave attenuator equipment to the first millimetre-wave attenuator equipment
Send the second signal of communication；
Second signal of communication includes timestamp, signal transmitting and receiving module is numbered, subsystem terminal is numbered and whole with subsystem
Number the corresponding communication information in end；
Signal transmitting and receiving module is numbered for distinguishing signal transmitting and receiving module；Subsystem terminal number is for distinguishing subsystem end
End；Data information is the data that subsystem terminal is sent to central processing unit.
It is set preferably, subsystem terminal can control the second millimetre-wave attenuator equipment to other second millimetre-wave attenuators
Preparation send third communication signal；
Third communication signal include timestamp, sender's subsystem terminal number, recipient's subsystem terminal number and
Data information；
Data information needs interactive information between two subsystems terminal.
Preferably, the second millimetre-wave attenuator equipment is connected with N number of subsystem terminal, N is more than or equal to 1.
Preferably, the quantity of the first millimetre-wave attenuator equipment is identical as the quantity of the second millimetre-wave attenuator equipment；
First millimetre-wave attenuator equipment and the second millimetre-wave attenuator equipment correspond.
As described above, the present invention has the advantages that for the ultra wide band millimeter wave wireless communications method in system
What this patent proposed is used for original wired layout in the millimeter wave wireless communications method substitution system in system, gives
The designs such as the structure and layout of system bring flexibility ratio, reduce the complexity of system and alleviate system weight, are promoted
System performance is conducive to system extension and a variety of applications.
Method proposed by the present invention for the millimeter wave wireless communication in system, takes full advantage of the spy of channel in system
Sign: distance is shorter, direct-view, propagation channel simple (no multipath), nothing penetrates, decline influence etc. without rain, avoids millimeter wave propagation
The advantage of millimeter wave ultra-wide band is utilized in defective and limitation, can effectively meet the needs of system is to High Data Rate, promotes system
System performance, optimization system design, while a kind of efficient, completely new application is provided for millimeter wave.
Detailed description of the invention
Fig. 1 is the system rough schematic view for needing to carry out high speed data transfer in the present invention.
Fig. 2 is the system rough schematic view that millimeter wave wireless communications method is applied in the present invention.
Fig. 3 is millimeter wave telecommunications architecture in system in the first embodiment of the invention.
Fig. 4 is millimeter wave telecommunications architecture downlink package 1 in the first embodiment of the invention.
Fig. 5 is millimeter wave telecommunications architecture downlink package 2 in the first embodiment of the invention.
Fig. 6 is millimeter wave telecommunications architecture uplink package in the first embodiment of the invention.
Fig. 7 is millimeter wave telecommunications architecture in system in second of embodiment of the invention.
Fig. 8 is millimeter wave telecommunications architecture downlink package 1 in second of embodiment of the invention.
Fig. 9 is millimeter wave telecommunications architecture downlink package 2 in second of embodiment of the invention.
Figure 10 is millimeter wave telecommunications architecture uplink package in second of embodiment of the invention.
The data packet of Figure 11 interactive information between millimeter wave radio communication subsystem in the first embodiment in the present invention
Package.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be noted that the basic conception that only the invention is illustrated in a schematic way is illustrated provided in the present embodiment,
Then only shown in schema with it is of the invention in related component rather than component count, shape and size when according to actual implementation draw
System, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel can also
It can be increasingly complex.
The first embodiment of the invention is related to a kind of millimeter-wave communication system applied in aerospace systems, the first
The communication construction of embodiment is the transmission of point-to-multipoint, and in this communication construction, in central processing unit side, configuration center side is received
Sender (the first millimetre-wave attenuator equipment), configuring a sub- transceiver in each subsystem side, (the second millimetre-wave attenuator is set
It is standby), it is downlink from center side transceiver to the link definition of subsystem transceiver, from subsystem transceiver in
Centre side transceiver is defined as uplink.
1 schematic diagram of communication construction places 1 transceiver, transceiver configuration 3 referring to Fig. 3, in central processing unit side
A sector services multiple subsystems under each sector (each subsystem side configures a transceiver).The configuration of communication construction 1
It is as follows:
1, firstly, the frequency point and bandwidth resources of the demand selection millimeter wave according to system to data transfer rate；
2, according to frequency point, bandwidth resources and system structure, layout, to the various index requests configuration transmitting-receiving of data transmission
The number of sectors (one or more) of letter machine number (one or more) and each transceiver；
3, adjacent sector selects different frequency spectrum resources, avoids interfering；
4, optimization Millimeter-wave Wireless Communication System design, determines that transmission plan, Inter-Cell Interference Coordination (determine neighboring community
Avoid interfering using different frequent points resource), multi-antenna technology, mixing ARQ, modulation coding scheme, message sink coding, channel coding with
And TDD FDD scheme, frame structure design etc. are used, it is multiple using the feature room for promotion of the wave beam forming of millimeter wave in sector
With, raising frequency spectrum resource utilization rate, optimization system design, maximum system throughput.
Two layers of communication protocol is used for telecommunications architecture 1, two layers of communication protocol includes physical layer (physical
Layer-PHY) and subsystem access layer (Subsystem Access layer-SSAC), physical layer are responsible for coding and decoding, modulation
Demodulation and signal is mapped on suitable physical time-frequency resource etc..SSAC layers are mainly responsible for each subsystem of differentiation, guarantee not
It is transmitted with information between subsystem and central processing unit timely correct, and can guarantee the synchronization between each subsystem.
The information of subsystem is issued to if it is unified information then by the way of broadcast from center side transceiver,
Package is referring to Fig. 4.Sector number is used to distinguish each cell in base station, and timestamp is used to determine that the synchronous of information sends.
For the different then package of the information for being issued to each subsystem from center side transceiver referring to Fig. 5, subsystem is determining
Number and data volume the subchannel of respective number therefore can be configured according to frequency spectrum resource, distribute fixed subchannel (i.e.
Running time-frequency resource) to fixed subsystem, it can effectively improve the spectrum efficiency of system, reduce the complexity of scheduling.Meanwhile uplink
Data volume with downlink be it is determining, either uplink and downlink can be determined according to the data volume of uplink and downlink with FDD or TDD
Running time-frequency resource reduces the complexity of system design, promotes spectrum efficiency.Subsystem number is used to distinguish different subsystem letters
Breath.
The message packet of center side transceiver is uploaded to referring to Fig. 6 from subsystem.Similarly, the timestamp in packet is used to true
Protect the synchronization of each subsystem upstream data information.
The system architecture of second of embodiment of the invention is point-to-point transmission plan, is defined as millimetre-wave attenuator in system
Framework 2 equally uses 2 layers of communication protocol architecture, physical layer (PHY) and subsystem access layer (SSAC), the function and frame of each layer
Structure 1 is identical.The system simplification figure of communication construction 2 configures multiple transceivers, each transceiver referring to Fig. 7, in subsystem side
The data transmission (being defined as subsystem group) for managing multiple subsystems configures equal number of transmitting-receiving letter in central processing unit side
Machine, center side transceiver are matched with subsystem side transceiver, realize point-to-point high speed data transfer.
Data information is transmitted to subsystem side transceiver by wired mode by subsystems group, then by being somebody's turn to do
Transceiver and corresponding center side transceiver carry out point-to-point high speed data transfer, basic configuration with framework 1, difference
Be in:
1, the quantity of configuration transceiver is determined according to the number of subsystem, data rate requirements, subsystems layout's framework etc.；
2, neighboring transceiver avoids interfering to using different frequency spectrum resources；
3, the frequency spectrum resource of each pair of transceiver needs is determined according to the data transfer rate of system requirements.
The information of each subsystem is sent to if it is identical information, package reference Fig. 8 from center side transceiver.When
Between stamp be used to determine that the synchronous of information sends.
The information of each subsystem side is sent to if it is not the same, its package reference Fig. 9 from center side transceiver.
Center side is sent information to from subsystem side, it is necessary first to the ID number of subsystem side transceiver has been configured, it is different
Subsystem side transceiver manage different subsystems.It include transceiver ID number information in the SSAC layer packet of uplink, meanwhile,
The data information that multiple subsystems of its management need to upload is formed a packet, is marked before each subsystem data information
The identity information of subsystem after data information composition wraps, stamps timestamp in packet header to ensure to upload the synchronization of data information, envelope
Packet referring to Fig.1 0.
In above two communication construction, the communication between subsystem is also used wirelessly, data between subsystem
Rate demand is substantially reduced compared to the requirement between center system and subsystem, and point-to-point millimeter is used uniformly between subsystem
Wave communication mode.Radio Link between subsystem is defined as parallel link.The number of data information transfer between subsystem
As shown in figure 11 according to encapsulating packet format, packet information includes timestamp, recipient's subsystem number, sender's subsystem number
And data information.
This patent propose millimeter wave wireless communications application in the system for needing high speed data transfer, such as outer space detection with
Track system, multiple-target system, ground sea land combat system and certain satellite load systems etc., use in such systems
Millimeter wave wireless communication method transmitting central processing unit and subsystem between massive dataflow information, and with millimeter wave without
Line method transmits the data information between each subsystem, instead of original optical fiber, cable or high-speed wire-layout.Referring to Fig. 2, Cong Tuzhong
It can be seen that with radio receiving-transmitting unit instead of in original system optical fiber, between control module and subsystem and control module
Cabling, wiring between subsystem etc. it is wired.Wirelessly greatly reduce the wiring in system, reduces system design
The weight of difficulty and system is conducive to the extension and a variety of applications of system, improves the performance of system, increase system
Flexibility ratio.Simultaneously as millimeter wave is propagated in the sky, Shi Qiyu declines, oxygen declines and multipath fading is all bigger, what these were propagated
Defect can substantially reduce the interference of extraneous signal, the performance and confidentiality of lifting system for but becoming advantage in system.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (6)
1. a kind of aerospace systems based on ultra wide band millimeter wave wireless communication, which is characterized in that including system equipment and wireless communication
Signal communication subsystem；
The communicating wireless signals subsystem includes the first millimetre-wave attenuator equipment and the second millimetre-wave attenuator equipment to match；
The system equipment includes central processor equipment and subsystem terminal；
The central processor equipment is connected with the first millimetre-wave attenuator equipment, the second millimetre-wave attenuator equipment and institute
It states subsystem terminal to be connected, passes through first millimetre-wave attenuator between the central processor equipment and the subsystem terminal
Wireless network between equipment and the second millimetre-wave attenuator equipment is communicated；
The radio communication subsystem uses two layers of Communication Protocol Model, and the Communication Protocol Model includes physical layer and subsystem
Access layer, the physical layer for code and decode, the synchronization of modulation and demodulation, frequency time, signal mapping；The subsystem
Access layer is responsible for distinguishing between each subsystem, data framing, physical addressing, Error Control, flow control and each subsystem
It is synchronous；The first millimetre-wave attenuator equipment is equipped with N number of sector, and the N is the integer more than or equal to 1；Each described fan
The frequency spectrum resource of area's configuration is different；
The central processor equipment can control the first millimetre-wave attenuator equipment and set to all second millimetre-wave attenuators
Preparation send broadcast singal；
The broadcast singal includes sector number, timestamp, control information and data information；
For the control information for controlling subsystem terminal operation, the data information is the central processing unit to described
The data that subsystem terminal is sent.
2. the aerospace systems according to claim 1 based on ultra wide band millimeter wave wireless communication, which is characterized in that in described
Centre processing equipment can control the first millimetre-wave attenuator equipment and send the first communication to the second millimetre-wave attenuator equipment
Signal；First signal of communication includes sector number, timestamp, subsystem terminal number and the communication information；
The subsystem terminal number is for distinguishing the subsystem terminal；The data information is the central processing unit to institute
State the data of subsystem terminal transmission；
The subsystem terminal is matched according to subsystem terminal number, if the subsystem terminal is logical with described first
Subsystem terminal number in letter signal matches, and the subsystem terminal executes described in first signal of communication
Data information；If misfitting, ignore first signal of communication.
3. the aerospace systems according to claim 1 based on ultra wide band millimeter wave wireless communication, which is characterized in that the son
System terminal can control the second millimetre-wave attenuator equipment and send the second communication letter to the first millimetre-wave attenuator equipment
Number；
Second signal of communication include timestamp, signal transmitting and receiving module number, subsystem terminal number and with the subsystem
The corresponding communication information of terminal number of uniting；
The signal transmitting and receiving module number is for distinguishing the signal transmitting and receiving module；The subsystem terminal number is for distinguishing
State subsystem terminal；The data information is the data that the subsystem terminal is sent to the central processing unit.
4. the aerospace systems according to claim 1 based on ultra wide band millimeter wave wireless communication, which is characterized in that the son
It is logical to transmission third of the second millimetre-wave attenuator equipment described in other that system terminal can control the second millimetre-wave attenuator equipment
Believe signal；
The third communication signal include timestamp, sender's subsystem terminal number, recipient's subsystem terminal number and
Data information；
The data information needs interactive information between two subsystems terminal.
5. the aerospace systems according to claim 1 based on ultra wide band millimeter wave wireless communication, which is characterized in that described the
Two millimetre-wave attenuator equipment are connected with N number of subsystem terminal, and the N is more than or equal to 1.
6. the aerospace systems according to claim 5 based on ultra wide band millimeter wave wireless communication, which is characterized in that described the
The quantity of one millimetre-wave attenuator equipment is identical as the quantity of the second millimetre-wave attenuator equipment；
The first millimetre-wave attenuator equipment and the second millimetre-wave attenuator equipment correspond.
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Citations (2)
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|---|---|---|---|---|
| CN1256832A (en) * | 1996-11-07 | 2000-06-14 | 韦弗特雷西公司 | System and method for broadband millmeter wave data communication |
| CN103975285A (en) * | 2011-12-15 | 2014-08-06 | 英特尔公司 | Implementing an inter-processor communication in a multi-core system using mmwave radios |
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| IL154453A0 (en) * | 2000-08-16 | 2003-09-17 | Millimetrix Broadband Networks | Millimetre wave (mmw) communication system and method, using multiple receive and transmit antennas |
| JP2002124916A (en) * | 2000-10-13 | 2002-04-26 | Nec Corp | Point-to-multipoint radio access system |
| CN1820429B (en) * | 2003-07-29 | 2010-10-06 | 独立行政法人情报通信研究机构 | Milliwave band radio communication method and system |
| US7598923B2 (en) * | 2006-05-22 | 2009-10-06 | Sony Corporation | Apparatus and method for communications via multiple millimeter wave signals |
| US10264478B2 (en) * | 2011-12-16 | 2019-04-16 | Samsung Electronics Co., Ltd. | Methods and apparatus to enhance reliability in millimeter wave wideband communications |
| CN202586973U (en) * | 2012-05-22 | 2012-12-05 | 长春理工大学 | 60GHz photoproduction millimeter wave wireless communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1256832A (en) * | 1996-11-07 | 2000-06-14 | 韦弗特雷西公司 | System and method for broadband millmeter wave data communication |
| CN103975285A (en) * | 2011-12-15 | 2014-08-06 | 英特尔公司 | Implementing an inter-processor communication in a multi-core system using mmwave radios |
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