CN110087234A - A kind of unmanned plane formation secure communication of network method and system - Google Patents
A kind of unmanned plane formation secure communication of network method and system Download PDFInfo
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- CN110087234A CN110087234A CN201910347608.4A CN201910347608A CN110087234A CN 110087234 A CN110087234 A CN 110087234A CN 201910347608 A CN201910347608 A CN 201910347608A CN 110087234 A CN110087234 A CN 110087234A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/009—Security arrangements; Authentication; Protecting privacy or anonymity specially adapted for networks, e.g. wireless sensor networks, ad-hoc networks, RFID networks or cloud networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/282—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account the speed of the mobile
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Abstract
The embodiment of the present invention provides a kind of unmanned plane formation secure communication of network method and system.Wherein, method includes: to obtain the secrecy and rate of the unmanned aerial vehicle group based on unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group；The transmission power collection is adjusted to maximize the secrecy and rate, and it maintains secrecy described with transmission power collection when rate maximum as the objective emission power collection of the unmanned aerial vehicle group, so that the unmanned aerial vehicle group is communicated according to the objective emission power collection with several described authorization terminals.Method and system provided in an embodiment of the present invention, by adjusting transmission power collection to maximize secrecy and rate, obtain objective emission power collection, so that unmanned aerial vehicle group is communicated according to objective emission power collection with several authorization terminals, the safety for having ensured information transmission, improves the safety of unmanned plane formation network communication.
Description
Technical field
The present invention relates to field of information security technology more particularly to a kind of unmanned plane formation secure communication of network method and it is
System.
Background technique
In recent years, due to small in size, at low cost and easy deployment the advantages that, unmanned plane has obtained extensively in wireless communication field
Using.It can apply many aspects in mobile communication, such as move the collection etc. of covering, mobile relay and mobile data.
Currently, it is certain in emergency circumstances, such as public safety, logistics and forest fire monitoring etc., the collaboration communication that unmanned plane is formed into columns
Mode is also increasingly taken seriously, it played an important role the performance requirement met between multiple no-manned plane and 5G communication.
As unmanned plane is public, commonly used in civil and military, the safety problem in UAV Communication is also more next
More it is taken seriously.The protrusion challenge of unmanned plane in the field of wireless communication is the safe transmission problem of information, due to wireless
The dynamic of the intrinsic opening of communication channel, the broadcast of radio signal and Communication Network for UAVS topology, it is easy to make
At leakage and eavesdropping of the information in transmission process, so that the communication security to unmanned plane threatens.Although existing encryption
Methods and techniques play safely certain effect to UAV Communication, for example, using traditional cipher mode based on key and
Safety of physical layer technology etc. based on wireless channel physical features, but answering due to unmanned plane formation network dynamic topology structure
The communication security of polygamy, unmanned plane formation network cannot still ensure.
Summary of the invention
In order to solve the problems in the existing technology, it is logical to provide a kind of unmanned plane formation network security for the embodiment of the present invention
Believe method and system.
In a first aspect, the embodiment of the present invention provides a kind of unmanned plane formation secure communication of network method, comprising:
Based on unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group, described in acquisition
The secrecy and rate of unmanned aerial vehicle group；Wherein, the multiple terminal includes that several authorization terminals and one are moveable unauthorized
Terminal, the channel information include large-scale channel information and small scale channel information, and the transmission power collection includes the nothing
Transmission power when man-machine group communicates with each authorization terminal, the secrecy and rate are for characterizing the unmanned aerial vehicle group
Secure communication performance；
The transmission power collection is adjusted to maximize the secrecy and rate, and maintain secrecy described and institute when rate maximum
Objective emission power collection of the transmission power collection as the unmanned aerial vehicle group is stated, so that the unmanned aerial vehicle group is sent out according to the target
Power collection is penetrated to be communicated with several described authorization terminals.
Second aspect, the embodiment of the present invention provide a kind of unmanned plane formation secure communication of network system, comprising:
Secrecy and rate obtain module, for channel information and the unmanned plane based on unmanned aerial vehicle group Yu multiple terminal rooms
The transmission power collection of group, obtains the secrecy and rate of the unmanned aerial vehicle group；Wherein, the multiple terminal includes that several authorizations are whole
End and a moveable unauthorized terminal, the channel information includes large-scale channel information and small scale channel information, institute
Stating transmission power collection includes the transmission power when unmanned aerial vehicle group is communicated with each authorization terminal, the secrecy and rate
For characterizing the secure communication performance of the unmanned aerial vehicle group；
Secrecy and rate maximize module, for adjusting the transmission power collection to maximize the secrecy and rate, and
Using the secrecy with transmission power collection when rate maximum as the objective emission power collection of the unmanned aerial vehicle group, so that
The unmanned aerial vehicle group is communicated according to the objective emission power collection with several described authorization terminals.
The third aspect, the embodiment of the present invention provides a kind of electronic equipment, including memory, processor and is stored in memory
Computer program that is upper and can running on a processor, is realized when the processor executes described program as first aspect provides
Method the step of.
Fourth aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium, are stored thereon with calculating
Machine program is realized as provided by first aspect when the computer program is executed by processor the step of method.
A kind of unmanned plane formation secure communication of network method and system provided in an embodiment of the present invention, by unmanned aerial vehicle group with
The channel information of multiple terminal rooms comprising large-scale channel information and small scale channel information, and combine the hair of unmanned aerial vehicle group
Power collection is penetrated, obtains the secrecy and rate of the unmanned aerial vehicle group, and by adjusting transmission power collection to maximize secrecy and rate,
Objective emission power collection is obtained, so that unmanned aerial vehicle group is led to according to the objective emission power collection with several authorization terminals
Letter has ensured the safety of information transmission, has improved the safety of unmanned plane formation network communication.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of unmanned plane formation secure communication of network method flow diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of unmanned plane formation secure communication of network system provided in an embodiment of the present invention；
Fig. 3 is the entity structure schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment in order to better illustrate the present invention is first illustrated unmanned plane formation network: unmanned plane formation net
Network is commonly referred to as the network being made of unmanned aerial vehicle group and several authorization terminals, wherein unmanned aerial vehicle group generally includes multiple nothings
Man-machine, authorization terminal refers to the legal terminal that information transmission is carried out with unmanned aerial vehicle group.But in unmanned aerial vehicle group and authorization terminal
During carrying out information transmission, due to the opening of communication environments, it will usually there is unauthorized terminal to carry out listening in information,
In, unauthorized terminal is commonly referred to as the illegal terminal of transmitted information between eavesdropping unmanned aerial vehicle group and authorization terminal.Therefore, nobody
Unauthorized terminal is also typically included in machine formation network.The eavesdropping of unauthorized terminal in order to prevent guarantees unmanned plane formation network
Communications security, the embodiment of the invention provides a kind of unmanned plane formation secure communication of network methods.
Fig. 1 is a kind of unmanned plane formation secure communication of network method flow diagram provided in an embodiment of the present invention, such as Fig. 1 institute
Show, this method comprises:
Step 101, based on unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group,
Obtain the secrecy and rate of the unmanned aerial vehicle group；Wherein, the multiple terminal includes that several authorization terminals and one are removable
Unauthorized terminal, the channel information includes large-scale channel information and small scale channel information, the transmission power Ji Bao
The transmission power when unmanned aerial vehicle group is communicated with each authorization terminal is included, the secrecy and rate are for characterizing the nothing
The secure communication performance of man-machine group.
Specifically, embodiment in order to better illustrate the present invention, first has the application environment of the embodiment of the present invention
Body explanation.
The unmanned aerial vehicle group in unmanned plane formation network in the embodiment of the present invention includes L unmanned plane, unmanned plane formation net
Multiple terminals in network include K authorization terminal (being denoted as B) and 1 unauthorized terminal (being denoted as E).Unmanned aerial vehicle group takes multiple spot to assist
The mode of work, forms virtual multi-antenna transmission end, and contained antenna number is L.Antenna number contained by each authorization terminal user
For NB, antenna number contained by unauthorized terminal user is NE.The airborne period of unmanned plane is TUComprising two parts, several
Flight time section and several hovering periods.Unmanned aerial vehicle group only carries out information transmission with authorization terminal within the hovering period,
And within each hovering period, unmanned aerial vehicle group only carries out information transmission with a scheduled authorization terminal.In addition, each
Authorization terminal is only scheduled primary in the airborne period of entire unmanned plane.Due to the presence of unauthorized terminal, unauthorized end
End can eavesdrop the information transmitted between unmanned aerial vehicle group and authorization terminal within each hovering period.Assuming that being authorized to K
The hovering period of terminal is respectively π1,...,πK.For convenience of calculation, it is further assumed that πk=π, k=1 ..., K.
Assuming that it is respectively A, B and C that L, which is 3,3 unmanned planes, 2,2 authorization terminals of K are respectively first and second, and 1 unauthorized
Terminal is third.Also, unmanned aerial vehicle group is only communicated with first within the hovering period 1, is only carried out with second within the hovering period 2
Communication, due to third presence, within this 2 hovering periods, third will do it listening in information.At this time:
The large-scale channel information of unmanned aerial vehicle group and multiple terminal rooms, comprising:
A's and the large-scale channel information of first, the large-scale channel information of B and first, C and first within the hovering period 1
Large-scale channel information, the large-scale channel information of A and third, the large-scale channel information of B and third, C and third large scale channel
Information；And A and the large-scale channel information of second, the large-scale channel information of B and second, C and second within the hovering period 2
Large-scale channel information, the large-scale channel information of A and third, the large-scale channel information of B and third, C and third large scale letter
Road information.
It should be noted that the content that the small scale channel information of unmanned aerial vehicle group and multiple terminal rooms includes is as above, only need
Large-scale channel information in above content is replaced with small scale channel information, details are not described herein again.
The transmission power collection of unmanned aerial vehicle group refers to transmitting function when unmanned aerial vehicle group is communicated with each authorization terminal
Rate specifically includes:
Transmission power when A is communicated with first, transmission power when being communicated with second；Transmission power and second when B is communicated with first
Transmission power when communication；And transmission power of C when being communicated with first, transmission power when being communicated with second.
Channel information based on unmanned aerial vehicle group Yu multiple terminal rooms comprising large-scale channel information and small scale channel letter
Breath, and the transmission power collection of unmanned aerial vehicle group is combined, obtain the secrecy and rate of unmanned aerial vehicle group, wherein secrecy and rate are used for table
Levy the communication security degree of unmanned aerial vehicle group.
Step 102, the transmission power collection is adjusted to maximize the secrecy and rate, and most by the secrecy and rate
Objective emission power collection of the transmission power collection as unmanned aerial vehicle group when big, so that the unmanned aerial vehicle group is according to institute
Objective emission power collection is stated to be communicated with several described authorization terminals.
Specifically, secrecy and rate are higher, then the communication security degree of unmanned aerial vehicle group is higher, therefore, implement in the present invention
By adjusting the transmission power collection of unmanned aerial vehicle group to maximize secrecy and rate in example, and will maintain secrecy and adjustment when rate maximum
Objective emission power collection of the transmission power collection afterwards as unmanned aerial vehicle group so that unmanned aerial vehicle group with several authorization terminals into
Information is sent to several authorization terminals according to objective emission power collection when row communication, thus ensure the safety of information transmission,
Improve the safety of unmanned plane formation network communication.
Method provided in an embodiment of the present invention passes through the channel information of unmanned aerial vehicle group and multiple terminal rooms comprising big ruler
Channel information and small scale channel information are spent, and combines the transmission power collection of unmanned aerial vehicle group, obtains the secrecy and speed of unmanned aerial vehicle group
Rate, and by adjusting transmission power collection to maximize secrecy and rate, objective emission power collection is obtained, so that unmanned aerial vehicle group
It is communicated according to the objective emission power collection with several authorization terminals, has ensured the safety of information transmission, improved nothing
The safety of man-machine formation network communication.
Based on any of the above-described embodiment, large-scale channel information of the embodiment of the present invention to unmanned aerial vehicle group and multiple terminal rooms
Acquisition be illustrated.Based on unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group,
The secrecy and rate of the unmanned aerial vehicle group are obtained, before further include:
Step 001, the unmanned aerial vehicle group each hovering period in, obtain in the unmanned aerial vehicle group it is any nobody
Machine between counterpart terminal at a distance from.
Specifically, the process for obtaining a unmanned plane and the large-scale channel information of a terminal room is said first
It is bright:
Assuming that the coordinate that first of unmanned plane hovers in the period at k-th in unmanned aerial vehicle group is (wl,k,sl,k,hl,k),
In (wl,k,sl,k) indicate first of unmanned plane horizontal coordinate, hl,kIndicate the flying height of first of unmanned plane.Assuming that authorization is eventually
The space coordinate of end and unauthorized terminal is (rq,k,tq,k, 0), wherein q ∈ { B, E }.Then first of unmanned plane and terminal q are in kth
Distance d in a hovering periodql,kAre as follows:
Step 002, according to the distance, the path loss between the unmanned plane and the counterpart terminal is obtained.
Specifically, the large scale path loss within k-th of hovering period, between first of unmanned plane and terminal q(as unit of dB) are as follows:
Wherein, A=ηLoS-ηNLoS,It is the elevation angle of first of unmanned plane relative to terminal q,
a、b、ηLoSAnd ηNLoSIt is constant related with gain environment, f is carrier frequency, and c indicates the light velocity.
Step 003, according to the path loss, the absolute power damage between the unmanned plane and the counterpart terminal is obtained
Consumption, and the absolute power is lost as the large-scale channel information between the unmanned plane and the counterpart terminal.
Specifically, Q is lost in the absolute power of first of unmanned plane and terminal q within k-th of hovering periodql,kAre as follows:
And as the large-scale channel information of first of unmanned plane and terminal q.
Step 004, using all large-scale channel informations obtained in several periods of hovering as the unmanned aerial vehicle group
With the large-scale channel information of multiple terminal rooms.
Specifically, according to the process in step 001~003, the large scale of unmanned aerial vehicle group Yu multiple terminal rooms can be got
Channel information.
Based on any of the above-described embodiment, the step 101 in above-described embodiment is specifically described in the embodiment of the present invention, i.e.,
Based on unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group, the unmanned aerial vehicle group is obtained
Secrecy and rate, comprising:
Step 1011, it within each hovering period of the unmanned aerial vehicle group, is awarded according to the unmanned aerial vehicle group with corresponding
The transmission power when channel information and the unmanned aerial vehicle group for weighing terminal room are communicated with the authorization terminal, obtains the nothing
First secrecy rate of the man-machine group within the hovering period.
Specifically, for any hovering period, believed according to the large scale channel between unmanned aerial vehicle group and corresponding authorization terminal
Breath and small scale channel information construct the channel matrix between unmanned aerial vehicle group and the authorization terminal, and then according to channel matrix and nothing
Transmission power when man-machine group communicates with the authorization terminal obtains first secrecy of the unmanned aerial vehicle group within the hovering period
Rate.
Wherein, the process for constructing channel matrix is as follows:
Unmanned aerial vehicle group and the channel information between corresponding authorization terminal are obtained, channel matrix is formed.Wherein, first of unmanned plane
Channel information h between terminal qql,kAre as follows:
Wherein,It indicates small scale channel information, the channel is chosen to be Rayleigh channel herein.
Virtual N is formed between unmanned aerial vehicle group and terminalqThe MIMO link of × L, channel matrixIt can be with
It is expressed as
Hq,k=Sq,kQq,k,q∈{B,E}
Wherein, Hq,k=[hq1,k,hq2,k,...,hqL,k], Sq,k=[sq1,k,sq2,k,...,sqL,k],
At this point, the first secrecy rate can be calculate by the following formula:
Wherein, RB,k(Pk) indicate the first secrecy rate hovered in the period at k-th,For based on SB,kAsk
Average calculating operation symbol, det are square matrix function,For dimension NB×NBUnit matrix, HB,kFor in k-th of hovering period nobody
Channel matrix between a group of planes and scheduled authorization terminal, PkIt is awarded for unmanned aerial vehicle group in k-th of period of hovering with scheduled
Transmission power when power terminal is communicated, ()HFor conjugate transposition, δ2For noise variance.
Step 1012, within the hovering period, according to the channel of the unmanned aerial vehicle group and corresponding unauthorized terminal room
Transmission power when information and the unmanned aerial vehicle group are communicated with the authorization terminal obtains the unmanned aerial vehicle group described outstanding
Stop the second secrecy rate in the period.
Specifically, the embodiment of the present invention obtains the process of the second secrecy rate and obtains the process class of the first secrecy rate
Seemingly, details are not described herein again, at this point, the second secrecy rate can be calculate by the following formula:
Wherein, RE,k(Pk) indicate the second secrecy rate hovered in the period at k-th,For based on SE,kAsk flat
Equal operator, det are square matrix function,For dimension NE×NEUnit matrix, HE,kFor unmanned plane in k-th of hovering period
The channel matrix of group and unauthorized terminal room, PkFor unmanned aerial vehicle group in k-th of period of hovering and scheduled authorization terminal into
Transmission power when row communication, ()HFor conjugate transposition, δ2For noise variance.
Step 1013, all first secrecy rates according to the unmanned aerial vehicle group within several hovering periods and all
Second secrecy rate obtains the secrecy and rate of the unmanned aerial vehicle group.
Specifically, by the mean value of the sum of several all first secrecy rates hovered in the period and all second secrecy
The mean value of the sum of rate is subtracted each other, and the secrecy and rate of unmanned aerial vehicle group can be obtained.
Based on any of the above-described embodiment, the step 102 in above-described embodiment is specifically described in the embodiment of the present invention, i.e.,
The transmission power collection is adjusted to maximize the secrecy and rate, comprising:
Step 1021, using large-scale channel information, the secrecy and rate are converted into target secrecy and rate.
Specifically, due to, there are small scale channel information, being mathematically difficult to secrecy and speed in secrecy and rate
Rate is maximized, and therefore, is rejected all small scale channel informations in secrecy and rate, is utilized unmanned aerial vehicle group and multiple terminals
Between large-scale channel information, will maintain secrecy and rate be converted to target secrecy and rate.
Step 1022, it is based on block coordinate descent, target secrecy and rate are optimized, realized described in maximizing
Secrecy and rate.
Specifically, block coordinate descent be a kind of non-gradient optimization algorithm.Algorithm in each iteration, at current point
Linear search is carried out along a coordinate direction in the hope of the local minimum of a function.It is recycled in the whole process different
Coordinate direction.For the function that can not be split, algorithm possibly can not acquire optimal solution in lesser iterative steps.For
Accelerate convergence, can use a coordinate system appropriate, such as is obtained between coordinate as far as possible not by principal component analysis
Be mutually related new coordinate system.
It is maintained secrecy by block coordinate descent to target and rate optimizes, can be realized the maximization of secrecy and rate.
Based on any of the above-described embodiment, the step 1011 in above-described embodiment is specifically described in the embodiment of the present invention,
The formula of i.e. described secrecy and rate R (Φ) are as follows:
Wherein, RB(Φ) is the equal of the sum of all first secrecy rates of unmanned aerial vehicle group within several hovering periods
Value, RE(Φ) is the mean value of the sum of all second secrecy rates of unmanned aerial vehicle group within several hovering periods,For transmission power collection, K is the number of authorization terminal,For based on SB,kAveraging operator, det is
Square matrix function,For dimension NB×NBUnit matrix, HB,kIt is awarded for unmanned aerial vehicle group in k-th of period of hovering with scheduled
Weigh the channel matrix of terminal room, PkWhen being communicated for unmanned aerial vehicle group in k-th of period of hovering with scheduled authorization terminal
Transmission power, ()HFor conjugate transposition, δ2For noise variance,For based on SE,kAveraging operator,For dimension
NE×NEUnit matrix, HE,kFor the channel matrix of unmanned aerial vehicle group and unauthorized terminal room in k-th of period of hovering；
The target secrecy and rateFormula are as follows:
Wherein,For unmanned aerial vehicle group several hovering periods in the first secrecy of all targets rate it
The mean value of sum,For the sum of all targets the second secrecy rate of the unmanned aerial vehicle group within several hovering periods
Mean value,For transmission power collection, For the auxiliary of introducing
Variable, K are the number of authorization terminal, ILFor the unit matrix of dimension L × L, NBFor antenna number contained by authorization terminal, QB,kIt is
Large-scale channel information in k hovering period between unmanned aerial vehicle group and scheduled authorization terminal, PkFor k-th of hovering time
Transmission power when unmanned aerial vehicle group is communicated with scheduled authorization terminal in section, δ2For noise variance, e is natural constant, NE
For antenna number contained by unauthorized terminal, QE,kFor the large scale of unmanned aerial vehicle group and unauthorized terminal room in k-th of period of hovering
Channel information.
Based on any of the above-described embodiment, the step 1022 in above-described embodiment is specifically described in the embodiment of the present invention,
Namely based on block coordinate descent, target secrecy and rate are optimized, comprising:
Based on block coordinate descent, to transmission power collection, auxiliary machine variable tBWith auxiliary variable tEAlternating iteration is carried out, and
Optimum transmission power collection is solved using convex optimization tool and the first order Taylor method of development；
Corresponding secrecy and rate are obtained according to the optimum transmission power collection Φ, is preset if the secrecy and rate meet
Condition is then completed to optimize.
Specifically, optimization process is as follows:
(1) initiation parameter
Initialize the transmission power collection of unmanned aerial vehicle groupAnd the thresholding of given algorithm iteration ends
Value ε.
(2) optimization aim is to maximize secrecy and rate.In the unmanned aerial vehicle group of acquisition and the large scale channel of multiple terminals
On Information base, optimization problem be can be described as:
tB≥0
tE≥0
Wherein, pl,kFor first of unmanned plane transmission power, P within k-th of hovering period in unmanned plane formationmaxIt indicates
The limit value of power constraint, EmaxIndicate the limit value of energy constraint.
(3) block coordinate descent is used, to optimized variable Φ, tBAnd tEAlternating iteration is carried out, so that it is optimal to acquire problem
Solution.Specific implementation step is as follows:
(3-1) gives Φ, tBIt can be solved by following optimization problem.
s.t.tB≥0
The problem is convex optimization problem, and convex optimization tool can be directly used and solved.
(3-2) gives Φ, tEIt can be solved by following optimization problem.
s.t.tE≥0
The problem is convex optimization problem, and convex optimization tool can be directly used and effectively solved.
(3-3) gives tBAnd tE, Φ can be solved by following optimization problem.
The objective function is non-convex function, therefore optimization problem is non-convex optimization problem.It, will using the first order Taylor method of developmentPointExpansion obtains:
At this point, the optimization problem is further converted to:
Optimization problem after conversion is convex optimization problem, can carry out solving to obtain optimal hair using convex optimization tool
Penetrate power collection Φ.
(4) corresponding secrecy and rate are obtained according to optimum transmission power collection Φ, if secrecy and rate meet preset condition,
It then completes to optimize, otherwise, the optimum transmission power collection Φ got according to this repeats step (3-1)-(3-3) mistake
Journey, until secrecy and rate meet preset condition.
Based on any of the above-described embodiment, the embodiment of the present invention is illustrated the preset condition in above-described embodiment, i.e. institute
State preset condition are as follows:
Wherein, R (Φ) is the secrecy and rate that current iteration obtains, R0(Φ) is the secrecy and speed that last iteration obtains
Rate, ε are preset threshold.
Based on any of the above-described embodiment, Fig. 2 is a kind of unmanned plane formation secure communication of network provided in an embodiment of the present invention
The structural schematic diagram of system, as shown in Fig. 2, the system includes:
Secrecy and rate obtain module 201, for based on unmanned aerial vehicle group and multiple terminal rooms channel information and the nothing
The transmission power collection of man-machine group obtains the secrecy and rate of the unmanned aerial vehicle group；Wherein, the multiple terminal includes that several are awarded
Terminal and a moveable unauthorized terminal are weighed, the channel information includes large-scale channel information and small scale channel letter
Breath, the transmission power collection includes the transmission power when unmanned aerial vehicle group is communicated with each authorization terminal, the secrecy
It is used to characterize the secure communication performance of the unmanned aerial vehicle group with rate；Secrecy and rate maximize module 202, described for adjusting
Transmission power collection to maximize the secrecy and rate, and transmission power collection when using the secrecy and rate maximum as
The objective emission power collection of the unmanned aerial vehicle group, if so that the unmanned aerial vehicle group is according to the objective emission power collection and described
A dry authorization terminal is communicated.
System provided in an embodiment of the present invention, specifically executes above-mentioned each method embodiment process, please specifically be detailed in above-mentioned each
The content of embodiment of the method, details are not described herein again.System provided in an embodiment of the present invention passes through unmanned aerial vehicle group and multiple terminal rooms
Channel information comprising large-scale channel information and small scale channel information, and combine unmanned aerial vehicle group transmission power collection, obtain
The secrecy and rate of the unmanned aerial vehicle group are taken, and by adjusting transmission power collection to maximize secrecy and rate, obtains target hair
Power collection is penetrated, so that unmanned aerial vehicle group is communicated according to the objective emission power collection with several authorization terminals, is ensured
The safety of information transmission, improves the safety of unmanned plane formation network communication.
Fig. 3 is the entity structure schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention, as shown in figure 3, the electronics
Equipment may include: processor (processor) 301, communication interface (Communications Interface) 302, storage
Device (memory) 303 and communication bus 304, wherein processor 301, communication interface 302, memory 303 pass through communication bus
304 complete mutual communication.Processor 301, which can call, to be stored on memory 303 and can run on processor 301
Computer program, the method to execute the various embodiments described above offer, for example, the letter based on unmanned aerial vehicle group Yu multiple terminal rooms
The transmission power collection of road information and the unmanned aerial vehicle group obtains the secrecy and rate of the unmanned aerial vehicle group；Wherein, the multiple end
End includes several authorization terminals and a moveable unauthorized terminal, the channel information include large-scale channel information with
Small scale channel information, the transmission power collection include the transmitting function when unmanned aerial vehicle group is communicated with each authorization terminal
Rate, the secrecy and rate are used to characterize the secure communication performance of the unmanned aerial vehicle group；The transmission power collection is adjusted with maximum
Change the secrecy and rate, and maintains secrecy described with transmission power collection when rate maximum as the mesh of the unmanned aerial vehicle group
Transmission power collection is marked, so that the unmanned aerial vehicle group is carried out according to the objective emission power collection and several described authorization terminals
Communication.
In addition, the logical order in above-mentioned memory 303 can be realized by way of SFU software functional unit and conduct
Independent product when selling or using, can store in a computer readable storage medium.Based on this understanding, originally
The technical solution of the inventive embodiments substantially part of the part that contributes to existing technology or the technical solution in other words
It can be embodied in the form of software products, which is stored in a storage medium, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes the present invention respectively
The all or part of the steps of a embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk
Etc. the various media that can store program code.
The embodiment of the present invention also provides a kind of non-transient computer readable storage medium, is stored thereon with computer program,
The computer program is implemented to carry out the transmission method of the various embodiments described above offer when being executed by processor, for example, be based on
Unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group, obtain the guarantor of the unmanned aerial vehicle group
Close and rate；Wherein, the multiple terminal includes several authorization terminals and a moveable unauthorized terminal, the channel
Information includes large-scale channel information and small scale channel information, and the transmission power collection includes that the unmanned aerial vehicle group is awarded with each
Transmission power when power terminal is communicated, the secrecy and rate are used to characterize the secure communication performance of the unmanned aerial vehicle group；
The transmission power collection is adjusted to maximize the secrecy and rate, and maintain secrecy described and transmitting function when rate maximum
Objective emission power collection of the rate collection as the unmanned aerial vehicle group, so that the unmanned aerial vehicle group is according to the objective emission power collection
It is communicated with several described authorization terminals.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of unmanned plane formation secure communication of network method characterized by comprising
Based on unmanned aerial vehicle group and the channel information of multiple terminal rooms and the transmission power collection of the unmanned aerial vehicle group, obtain it is described nobody
The secrecy and rate of a group of planes；Wherein, the multiple terminal includes several authorization terminals and a moveable unauthorized terminal,
The channel information includes large-scale channel information and small scale channel information, and the transmission power collection includes the unmanned aerial vehicle group
The safety that transmission power when being communicated with each authorization terminal, the secrecy and rate are used to characterize the unmanned aerial vehicle group is logical
Believe performance；
The transmission power collection is adjusted to maximize the secrecy and rate, and maintain secrecy described and hair when rate maximum
Objective emission power collection of the power collection as the unmanned aerial vehicle group is penetrated, so that the unmanned aerial vehicle group is according to the objective emission function
Rate collection is communicated with several described authorization terminals.
2. unmanned plane formation secure communication of network method according to claim 1, which is characterized in that based on unmanned aerial vehicle group with
The transmission power collection of the channel information of multiple terminal rooms and the unmanned aerial vehicle group obtains the secrecy and rate of the unmanned aerial vehicle group,
Before further include:
Within each hovering period of the unmanned aerial vehicle group, any unmanned plane and counterpart terminal in the unmanned aerial vehicle group are obtained
Between distance；
According to the distance, the path loss between the unmanned plane and the counterpart terminal is obtained；
According to the path loss, the absolute power loss between the unmanned plane and the counterpart terminal is obtained, and will be described exhausted
To power loss as the large-scale channel information between the unmanned plane and the counterpart terminal；
Using all large-scale channel informations obtained in several periods of hovering as the unmanned aerial vehicle group and the multiple end
Large-scale channel information between end.
3. unmanned plane formation secure communication of network method according to claim 1, which is characterized in that based on unmanned aerial vehicle group with
The transmission power collection of the channel information of multiple terminal rooms and the unmanned aerial vehicle group obtains the secrecy and rate of the unmanned aerial vehicle group,
Include:
Within each hovering period of the unmanned aerial vehicle group, according to the channel between the unmanned aerial vehicle group and corresponding authorization terminal
Transmission power when information and the unmanned aerial vehicle group are communicated with the authorization terminal obtains the unmanned aerial vehicle group described outstanding
Stop the first secrecy rate in the period；
Within the hovering period, according to the unmanned aerial vehicle group and the channel information of corresponding unauthorized terminal room and it is described nobody
A transmission power when group of planes is communicated with the authorization terminal obtains the of the unmanned aerial vehicle group within the hovering period
Two secrecy rates；
According to the unmanned aerial vehicle group several hovering periods in all first secrecy rates and all second secrecy rates,
Obtain the secrecy and rate of the unmanned aerial vehicle group.
4. unmanned plane formation secure communication of network method according to claim 3, which is characterized in that adjust the transmitting function
Rate collection is to maximize the secrecy and rate, comprising:
Using large-scale channel information, the secrecy and rate are converted into target secrecy and rate；
Based on block coordinate descent, target secrecy and rate are optimized, realizes and maximizes the secrecy and rate.
5. unmanned plane formation secure communication of network method according to claim 4, which is characterized in that the secrecy and rate
The formula of R (Φ) are as follows:
Wherein, RB(Φ) is the mean value of the sum of all first secrecy rates of unmanned aerial vehicle group within several hovering periods, RE
(Φ) is the mean value of the sum of all second secrecy rates of unmanned aerial vehicle group within several hovering periods,For
Transmission power collection, K are the number of authorization terminal,For based on SB,kAveraging operator, det be square matrix function,For
Dimension NB×NBUnit matrix, HB,kFor the channel in k-th of period of hovering between unmanned aerial vehicle group and scheduled authorization terminal
Matrix, PkTransmission power when being communicated for unmanned aerial vehicle group in k-th of period of hovering with scheduled authorization terminal, ()H
For conjugate transposition, δ2For noise variance,For based on SE,kAveraging operator,For dimension NE×NEUnit square
Battle array, HE,kFor the channel matrix of unmanned aerial vehicle group and unauthorized terminal room in k-th of period of hovering；
The target secrecy and rateFormula are as follows:
Wherein,For the sum of all targets the first secrecy rate of the unmanned aerial vehicle group within several hovering periods
Mean value,For the equal of the sum of all targets the second secrecy rate of the unmanned aerial vehicle group within several hovering periods
Value,For transmission power collection,WithBecome for the auxiliary of introducing
Amount, K are the number of authorization terminal, ILFor the unit matrix of dimension L × L, NBFor antenna number contained by authorization terminal, QB,kFor kth
Large-scale channel information in a hovering period between unmanned aerial vehicle group and scheduled authorization terminal, PkFor k-th of hovering time
Transmission power when unmanned aerial vehicle group is communicated with scheduled authorization terminal in section, δ2For noise variance, e is natural constant, NE
For antenna number contained by unauthorized terminal, QE,kFor the large scale of unmanned aerial vehicle group and unauthorized terminal room in k-th of period of hovering
Channel information.
6. unmanned plane formation secure communication of network method according to claim 5, which is characterized in that declined based on block coordinate
Method optimizes target secrecy and rate, comprising:
Based on block coordinate descent, to transmission power collection, auxiliary variable tBWith auxiliary variable tEAlternating iteration is carried out, and is utilized convex
Optimization tool and the first order Taylor method of development solve optimum transmission power collection；
Corresponding secrecy and rate are obtained according to the optimum transmission power collection, if the secrecy and rate meet preset condition,
It then completes to optimize.
7. unmanned plane formation secure communication of network method according to claim 6, which is characterized in that the preset condition
Are as follows:
Wherein, R (Φ) is the secrecy and rate that current iteration obtains, R0(Φ) is the secrecy and rate that last iteration obtains, ε
For preset threshold.
8. a kind of unmanned plane formation secure communication of network system characterized by comprising
Secrecy and rate obtain module, for channel information and the unmanned aerial vehicle group based on unmanned aerial vehicle group and multiple terminal rooms
Transmission power collection obtains the secrecy and rate of the unmanned aerial vehicle group；Wherein, the multiple terminal include several authorization terminals and
One moveable unauthorized terminal, the channel information includes large-scale channel information and small scale channel information, the hair
Penetrating power collection includes the transmission power when unmanned aerial vehicle group is communicated with each authorization terminal, and the secrecy and rate are used for
Characterize the secure communication performance of the unmanned aerial vehicle group；
Secrecy and rate maximize module, for adjusting the transmission power collection to maximize the secrecy and rate, and by institute
Objective emission power collection of the transmission power collection as unmanned aerial vehicle group when stating secrecy and rate maximum, so that described
Unmanned aerial vehicle group is communicated according to the objective emission power collection with several described authorization terminals.
9. a kind of electronic equipment including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that the processor realized when executing described program it is as described in any one of claim 1 to 7 nobody
The step of machine formation secure communication of network method.
10. a kind of non-transient computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer
Unmanned plane formation secure communication of network method as described in any one of claim 1 to 7 is realized when program is executed by processor
Step.
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