CN105554843B - Best relay position searching method and system based on continuous negative-feedback variable step - Google Patents
Best relay position searching method and system based on continuous negative-feedback variable step Download PDFInfo
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- CN105554843B CN105554843B CN201510903914.3A CN201510903914A CN105554843B CN 105554843 B CN105554843 B CN 105554843B CN 201510903914 A CN201510903914 A CN 201510903914A CN 105554843 B CN105554843 B CN 105554843B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention provides best relay position searching methods and system based on continuous negative-feedback variable step, this method comprises: the signal amplification forwarding that mobile relay sends the source received is to destination, so that destination compares the communication performance intensity of the communication performance intensity of the test signal and the known best relay position of preservation, and the comparing result is fed back into mobile relay with a bit information, mobile relay is according to this bit information, calculate random perturbation step-length and modifying factor, thereby determine that next intermediate position, and it is moved to next intermediate position, the step of receiving the test signal for being used to test communication performance that source is sent is executed again, until determining best relay position.The performance of relayed communications can be improved in this method, and the location information without obtaining source and destination, it is not necessarily to multiple antennas, and only need destination to feed back a bit information and carry out search control to mobile relay, best relay location point can be still determined within the scope of desired trajectory, expand the scope of application.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to the best relay position based on continuous negative-feedback variable step is searched
Method and system.
Background technique
Communication relay can be used to forward the information issued between different nodes, expand communication range, improve logical
The performance of letter system.
Terrestrial radio communication is easy to be blocked and shielded by barrier, and aircraft, satellite and unmanned plane (UVAs) can serve as
Communication relay, because airborne relaying effectively can be that the both sides communicated with each other is needed to set up in rugged mountain area or urban district
Connection.In these years, unmanned plane is used to attract the concern and research of many scholars, while its as the problem of communication relay
Using also very extensive.
The existing algorithm applied to the search of unmanned plane intermediate position mainly has: utilizing GPS measurement ground communication unit
Location information simultaneously utilizes search best relay position by unmanned plane；Extremum search control algolithm based on disturbance, based on airborne more
Algorithm of antenna etc..Existing unmanned plane intermediate position search algorithm, can be such that unmanned plane finds on an individual basis
Optimal intermediate position, but these algorithms or the scope of application are mainly reflected in there is also certain deficiency and defect:
1, ground communication unit needs the location information using the GPS functional measurement oneself of itself and the information is sent to
Unmanned plane relies on GPS function and is easy under attack and interference and position is caused to search failure；
2, the ground communication unit damaged for no GPS function or GPS device, existing some algorithms are can not
It uses, therefore, the use of existing algorithm is limited；
3, airborne multiple antennas increases the complexity of unmanned plane compared to single antenna, and inevitably angled estimation
Error, while also increasing the complexity of algorithm.
Summary of the invention
The embodiment of the invention provides a kind of best relay position searching method based on continuous negative-feedback variable step and it is
System must know that the location information of source and destination can determine that intermediate position bring uses for solving in the prior art
The problems such as limited and error is big.
Best relay position searching method provided in an embodiment of the present invention based on continuous negative-feedback variable step, comprising:
Step A, mobile relay receives the test signal sent from source on any position of trapped orbit, and puts
It is forwarded to destination greatly；
Step B, the destination receive the signal that the mobile relay is sent and calculate this communication performance, the communication
Performance includes: signal-to-noise ratio and the bit error rate, and according to the communication performance of calculated result and the known best relay position saved into
Row compares, and generates a bit information and feed back to the mobile relay, a bit information indicate present communications performance with
The comparison result of the communication performance of the known best relay position saved, the known best relay position be leading to of having tested
Believe the best position of performance；
Step C, the mobile relay record current location information, and according to a bit information and random perturbation step-length
It is moved to next position, and return step A with modifying factor, until final determine best relay position, the best relay
Position are as follows: the best position of communication performance in preset search duration, alternatively, the mobile relay mobile complete is described solid
Communication performance best position when orbit determination road, alternatively, the communication performance meets the position of default requirement.
Best relay position hunting system provided in an embodiment of the present invention based on continuous negative-feedback variable step, comprising:
The hunting system includes mobile relay, source and destination；
Wherein, the mobile relay receives the test letter sent from the source on any position of trapped orbit
Number, and amplification forwarding is to the destination；
The destination receives the signal that the mobile relay is sent and calculates this communication performance, the communication performance packet
It includes: signal-to-noise ratio and the bit error rate, and be compared according to calculated result with the communication performance of the known best relay position saved,
And generate a bit information and feed back to the mobile relay, a bit information indicates present communications performance and has saved
The comparison result of the communication performance of known best relay position, the known best relay position be the communication performance tested most
Good position；
The mobile relay records current location information, and according to a bit information, random perturbation step-length and amendment
The factor is moved to next position, and executes receive the test signal that sends from the source again, and amplification forwarding is to institute
The step of stating destination, until final determine best relay position, the best relay position are as follows: in preset search duration
The best position of communication performance, alternatively, communication performance best position when the complete trapped orbit of mobile relay movement
It sets, alternatively, the communication performance meets the position of default requirement.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that receive by mobile relay and test
Signal, and be sent to the calculating of the communication performance of destination progress current location and known best relay position and compare, according to
The comparison result and random perturbation step-length and modifying factor of destination feedback, are moved to next intermediate position, and return and hold
Row mobile relay receives the step of signal, by recycling above-mentioned process mobile relay is constantly moved based on step-length
During next intermediate position, best relay position is moved closer to, and determine best relay position, this method can be improved
The performance of relayed communications, and the location information without obtaining source and destination are not necessarily to multiple antennas, and only destination are needed to feed back
One bit information carries out search control to mobile relay, and best relay location point can be still determined within the scope of desired trajectory, expands
The big scope of application.
Detailed description of the invention
Fig. 1 is the schematic diagram of the traffic model of best relay position determination system in the embodiment of the present invention；
Fig. 2 is the mobile relay best relay position searching method based on continuous negative-feedback variable step in the embodiment of the present invention
Process a schematic diagram；
Fig. 3 is the emulation of the corresponding relationship of the signal-to-noise ratio of the move angle and signal of mobile relay in the embodiment of the present invention
Figure；
Fig. 4 is the analogous diagram of the corresponding relationship of timeslot number and signal-to-noise ratio in the embodiment of the present invention；
Fig. 5 is when determining best relay position in the embodiment of the present invention with the bit error rate, between move angle and signal-to-noise ratio
The analogous diagram of corresponding relationship；
Fig. 6 is pair between timeslot number and bit error rate when determining best relay position in the embodiment of the present invention with the bit error rate
The analogous diagram that should be related to.
Fig. 7 is the mobile relay best relay position hunting system based on continuous negative-feedback variable step in the embodiment of the present invention
Structure schematic diagram.
Specific embodiment
Further to illustrate that the present invention is the technical means and efficacy realizing predetermined goal of the invention and being taken, below in conjunction with
Attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect according to the present invention, detailed description is as follows.
Referring to Fig. 1, for the embodiment of the traffic model of best relay position determination system in the embodiment of the present invention, packet
It includes: source, mobile relay and destination.
In Fig. 1, RiIndicate that mobile relay, S indicate source, D indicates destination.
Wherein, source and destination can be two different ground communication units, which can be respectively
The wireless communication transceiver of seed type, such as can be mobile phone, terminal, base station etc., or can also be in other movements
After.
It in embodiments of the present invention, is using source as signal transmitting terminal, destination is carried out as signal receiving end
Description, in practical applications, source and destination can be used as signal transmitting terminal and signal receiving end.
As shown in Figure 1, in three-dimensional system of coordinate mobile relay use cylindrical coordinate parameter, and its coordinate be (r, θ,
Z), wherein r is moving radius of the mobile relay in xoy plane, i.e. Ri'.The origin of O expression cylindrical coordinates.
Mobile relay operation has trapped orbit, it is moved along planned orbit by radius of r, therefore, at this
It is using r as the best relay position for finding mobile relay on the circle that radius is constituted in inventive embodiments.Wherein, θ is from positive Z
ο R is counterclockwise gone to from x-axis from the point of view of axisi' the angle turned over, z then indicate the height of mobile relay.
In embodiments of the present invention, mobile relay is (r, θ (t), z) in the coordinate of t time slot, in the seat of t+1 time slot
It is designated as (r, θ (t+1), z).
Wherein, the transformational relation of cylindrical coordinate (r, θ, z) and rectangular coordinate system in space (x, y, z) are as follows:
In t time slot, mobile relay (r, θ (t), z) is from source (xs,ys,zs) and destination (xd,yd,zd) communication away from
From being respectively:
Wherein, d1Indicate the communication distance between mobile relay and source, d2Indicate logical between mobile relay and destination
Communication distance.
It should be noted that the origin in three-dimensional system of coordinate be it is fixed, hence, it can be determined that the movement rail of mobile relay
The radius and height of mark.The best relay position based on continuous negative-feedback variable step in the embodiment of the present invention is described more fully below
The embodiment of method for searching, referring to Fig. 2, including:
Step A, mobile relay receives the test signal sent from source on any position of trapped orbit, and puts
It is forwarded to destination greatly.
In t time slot, source will be sent to mobile relay is used to test the test signal of communication performance, and mobile relay exists
Receiving the test signal later will amplify the test signal, and the signal obtained after amplification is transmitted to destination,
It should be noted that because there is decaying and noise, the test signal that source is sent, with mobile relay in transmission process in signal
The test signal that receives is not duplicate, and mobile relay is after receiving test signal, will also be to receiving
Test signal amplifies processing, therefore, the signal of signal that mobile relay receives and mobile relay transmission is also not
's.
It should be noted that mobile relay initializes the location information of its own on the move before beginning search for.Source
It holds to mobile relay and sends a test signal, the test signal received will be transmitted to destination by mobile relay, wherein should
The practical amplification and forwarding contained to signal of the step of forwarding so that the destination calculates initial communication performance, and saves as
The original records of the destination.
Wherein, test signal is the signal for testing communication performance, mobile relay can be helped to search best relay
Position can carry the data for testing communication performance in the signal, and on the move after searching best relay position
Before, what source was sent is all test signal, and only on the move after finding best relay position, source will just send true
Just useful data.
Step B, the destination receives signal that the mobile relay is sent and calculates this communication performance, the communication performance packet
Signal-to-noise ratio, the bit error rate are included, and is compared according to calculated result with the communication performance of the known best relay position saved, with
And it generates a bit information and feeds back to the mobile relay.
Destination calculates this communication performance after receiving the signal, signal-to-noise ratio or error code including calculating this communication
This communication performance calculated is compared by rate with the communication performance of the known best relay position saved, this is
Know that best relay position is the best position of the communication performance tested, the signal-to-noise ratio of the known best relay position is in t
The maximum value of signal-to-noise ratio in all signals that destination has been calculated before time slot, alternatively, the known best relay position
The bit error rate is the minimum value of the bit error rate in destination has been calculated before t time slot all signals.
Further, a bit information is generated according to comparison result and feeds back to the mobile relay, which indicates
The comparison result namely the bit information packet of present communications performance and the communication performance of the known best relay position saved
It includes source and receives the information whether corresponding communication performance of signal from mobile relay improves, specifically, a bit information
It can be the letter of the best known location saved on the signal-to-noise ratio and the destination for the test signal that the destination receives
It makes an uproar the comparing result of ratio, is also possible to save in the bit error rate and the destination of the test signal received for the destination
Best known location the bit error rate comparing result.The communication performance that the comparison result can be current location is known better than this
The communication performance of best relay position is also possible to be inferior to the communication performance of the known best relay position.
The comparison result is sent by way of a bit information, for example, can preset bit information 1 indicates current
Communication performance is improved than the communication performance of known best relay position, and bit information 0 indicates the present communications performance ratio of signal
The communication performance of known best relay position has decline.In practical applications, it can also be arranged by other forms and compare knot
Fruit is not construed as limiting herein.
Technical solution in embodiment in order to better understand the present invention will be to calculate communication performance as signal-to-noise ratio below
Example, is discussed in detail the parameter that source in the embodiment of the present invention, mobile relay and destination are related in communication process, as follows:
1) first communication process: source to mobile relay is jumped；
Calculate the relevant following parameter of signal that mobile relay receives source transmission, comprising:
The signal that mobile relay receives:
Mean power: E [| n1|2]=N01
The loss of space free path:
Wherein, x indicates the test signal of source transmitting, PSIndicate the transmission power of source, n1Indicate that first jumps adding for communication
Property white Gaussian noise, yRIndicate the test signal that mobile relay receives, N01Indicate white Gaussian noise n1Power, E expression ask
Mathematical expectation, LS,RIndicate the free space path loss from source to mobile relay, λ indicates that source sends test signal and makes
The wavelength of wave, d1Indicate the distance between source and mobile relay.
Wherein, d1It can be calculated by the coordinate of mobile relay and source in three-dimensional system of coordinate.
2) second communication process: mobile relay to destination is jumped；
Calculate the following parameter related with the test signal of mobile relay forwarding that destination receives, comprising:
Destination receives the test signal sent from mobile relay:
Mean power: E [| n2|2]=N02
Free space path loss:
Gain:
Wherein, yDIndicate that the test signal that the mobile relay that destination receives is sent, x indicate the test letter that source is sent
Number, PSIndicate the transmission power of source, n1Indicate the first additive white Gaussian noise for jumping communication, mathematical expectation, L are asked in E expressionS,R
Indicating the free space path loss of source to mobile relay, λ indicates the wavelength that mobile relay amplification forwarding test signal uses,
d2Indicate the distance between mobile relay and destination, LR,DIndicate free space path loss of the mobile relay to destination, G
Indicate mobile relay to the gain of the test signal received, i.e. trunking gain, PRIndicate the transmission power of mobile relay, n2Table
Show the during the test signal that mobile relay transmits and receives second additive white Gaussian noise for jumping communication, N02Indicate Gauss
White noise n2Power.
Wherein, indicate that mobile relay amplification forwarding tests the wavelength that signal uses and source sends test signal and uses with λ
Wavelength, be because the mobile relay amplification forwarding wavelength that uses of test signal and source send the wavelength that test signal uses can
To be identical wavelength.
3) destination calculates the signal-to-noise ratio of the test signal received, as follows:
Wherein, SNR indicates the signal-to-noise ratio for the test signal that destination receives, PSIndicate the transmission power of source, G is indicated
Mobile relay gives the gain of the signal received, LS,RIt indicates from source to mobile relay, i.e., first jumps the free space road of communication
Diameter loss, LR,DIndicate that mobile relay to destination, i.e., second jumps the free space path loss of communication, N01Indicate that the first jump is logical
The white Gaussian noise n of letter1Power, N02Indicate that second jumps white Gaussian noise n2Power.
It should be noted that, although mobile relay only needs to be forwarded it after receiving test signal, but should
Test signal still has decline and the interference of noise during transmission, in order to ensure destination can receive preferably
Signal, mobile relay will amplify the test signal received, i.e. increase gain G.
In embodiments of the present invention, destination can by it is above-mentioned 3) in the way of calculate receive test signal noise
Than.
Before the search for not carrying out best relay position, the initial position of the known best relay position of destination record
It is given at random, and the initial value of signal-to-noise ratio is the signal-to-noise ratio of initial position.
Step C, the mobile relay records current location information, and according to a bit information, random perturbation step-length and repairs
Positive divisor is moved to next position, and return step A, until final determine best relay position.
Mobile relay compares knot according to this after the bit information comprising comparison result for receiving destination transmission
Fruit, random perturbation step-length and modifying factor determine next intermediate position, and are moved to next intermediate position.In t+1
When gap, A is returned to step.Mobile relay can the cyclic process of foregoing description through the invention constantly search for best relay position
It sets, and after determining best relay position, above-mentioned cyclic search process will be stopped.
One step-length of random perturbation step-length expression mobile relay random perturbation.
Modifying factor is the parameter for correcting random perturbation step-length, so that mobile relay is moved to next intermediate position
Closer to best relay position.
Specifically, if a bit information indicates that present communications performance is greater than the communicativeness of the known best relay position
Can, i.e. the signal-to-noise ratio of the signal of communication of current location is greater than the signal-to-noise ratio of the signal of communication of the known best relay position, or works as
The communication bit error rates of front position are less than the communication bit error rates of the known best relay position, then by current location be recorded as it is known most
Good intermediate position, and one disturbance step-length of random movement to be to be moved to next intermediate position, i.e., according to the first modifying factor subvalue
It is determining and be moved to next intermediate position with random perturbation step-length.The first modifying factor subvalue is 0.Present communications performance is excellent
When the communication performance of the known best relay position, the value of modifying factor is to make to reset processing, therefore, modifying factor at this time
Value, i.e. the first modifying factor subvalue be 0.
If a bit information indicates that present communications performance is less than the communication performance of the known best relay position, i.e., currently
The signal-to-noise ratio of the signal of communication of position is less than the signal-to-noise ratio of the signal of communication of the known best relay position or leading to for current location
Believe that the bit error rate is greater than the communication bit error rates of the known best relay position, then the mobile relay first returns to last position,
One disturbance step-length of random movement is again to be moved to next intermediate position, that is, is corrected according to the random perturbation step-length and second
Factor values are determining and are moved to next intermediate position, and the value of second modifying factor is the opposite of last random perturbation step-length
Number.Present communications performance is less than the communication performance of known best relay position, shows that movement leads to signal in the position of t time slot
Degradation, in such cases, destination will not update the noise of known best relay position and known best relay position
Than, and it is mobile in the position of t time slot in order to offset, mobile relay will return to the intermediate position locating for t-1 time slot, that is,
Mobile relay is returned to the intermediate position locating for t-1 time slot by t time slot, while when determining next intermediate position, because
The consequence of degradation will be brought in the increased random perturbation step-length of t-1 time slot to know, then the phase mobile to t-1 time slot
The mobile situation that then can avoid occurring identical of opposite direction, thereby increases and it is possible to the effect for bringing communication performance to improve, therefore, the second modifying factor
The value of son is opposite number of the mobile relay in the increased random perturbation step-length of t-1 time slot, even in t-1 time slot, movement
After increased random perturbation step-length be δ0, then in t time slot, mobile relay will increase negative δ0Amendment step-length, if in t-1 time slot,
The increased random perturbation step-length of mobile relay is negative δ0, then in t time slot, mobile relay will increase δ0Amendment step-length, the amendment
Step-length refers to since communication performance is deteriorated, to increase and decrease amount made by the mobile relay step-length to be moved.
Mobile relay records known best relay position, which indicates that t indicates time slot with θ (t)
Number.WithIndicating that the intermediate position of next time slot, δ (t) indicate the random perturbation step-length, ξ (t) indicates the modifying factor,
Then:
Wherein, the random perturbation step-length is for when indicating that mobile relay once moves, move angle circumferentially it is big
It is small.Random perturbation step-length is δ (t)=± δ0, wherein δ (t) indicates the random perturbation step-length, and works as δ (t)=δ0When indicate movement
It relays a step-length δ mobile in counter clockwise direction0, as δ (t)=- δ0When, indicate that mobile relay will move clockwise
One step-length δ0, vice versa, that is, may be set to be as δ (t)=- δ0When indicate mobile relay will be moved in counter clockwise direction
One step-length δ0, as δ (t)=δ0When, indicate that mobile relay will move a step-length δ clockwise0.Random using this
Disturb step-length when, it is positive and negative be it is random, it is positive and negative to represent direction, can determine that mobile relay is counterclockwise by random perturbation step-length
Movement is still moved clockwise on direction.
The diminution ratio of random perturbation step-length is pre-set in mobile relay, starts the random perturbation that mobile relay uses
Step-length is initial to fixed step size, and during searching for best relay position, gradually reduces disturbance according to the preset ratio
The absolute value of step-length, until determining that best relay position terminates to search for.
By the setting of random perturbation step-length, mobile relay is enabled to be moved to different intermediate positions, and by purpose
End calculates the signal-to-noise ratio or the bit error rate for the test signal that the mobile relay is transmitted in different intermediate positions, and by calculated result
It is compared with the signal-to-noise ratio of the known best relay position of record or the bit error rate, comparison result is fed back into mobile relay, by
Mobile relay determines next intermediate position and continues searching best relay position, and mobile relay is increasingly closer to most
Good intermediate position and determination.
In the present embodiment, if comparison result is that this communication performance is mentioned than the communication performance of known best relay position
Height, then mobile relay is updated to known best relay position in the intermediate position of t time slot by destination, and will be in t time slot
Communication performance be updated to the communication performance of known best relay position.Wherein, the known best relay saved in the destination
The communication performance of position is the best communication performance tested, and in the communication performance for constantly updating known best relay position
During, which will also become closer to best relay position.
Further, destination is according to the current communication performance being calculated and the known best relay position saved
Communication performance comparison result, update memory in known optimum receiving signal communication performance, even comparison result is current
The communication performance of position increases than the communication performance of known best relay position, then mobile relay will be locating for the t time slot
Intermediate position be recorded as known best relay position, and update the known optimum receiving signal communication performance in memory.
In embodiments of the present invention, when the signal-to-noise ratio of signal is greater than the signal-to-noise ratio of known best relay position, in movement
After will remain in the intermediate position of t time slot, and when being moved to next intermediate position, mobile relay is in t
The intermediate position of time slot is that starting point carries out movement.
I.e. in the case where the signal-to-noise ratio of signal is greater than the signal-to-noise ratio of known best relay position, mobile relay is according to as follows
Mode determines next intermediate position:
θ (t+1)=θ (t)+δ (t)
Wherein, θ (t+1) indicates that, in the position of t+1 time slot mobile relay, θ (t) indicates known best relay position, δ
(t) random perturbation step-length is indicated.
It is also provided with continuous negative-feedback counter in the embodiment of the present invention, is determined most using the continuous negative-feedback counter
Good intermediate position.The continuous negative-feedback counter is for describing mobile relay during searching best relay position, currently
The communication performance of position is less than the read-around ratio of the communication performance of known best relay position, i.e., each mobile relay is receiving
Comparison result is the signal-to-noise ratio that the signal-to-noise ratio of the signal of communication of current location is less than the signal of communication of known best relay position, or
The case where person is the bit error rate that the bit error rate of the signal of communication of current location is greater than the signal of communication of known best relay position
Under, all the value of continuous negative-feedback counter is increased.
Specifically, if comparison result is that the signal-to-noise ratio of the test signal of current location is greater than the letter of known best relay position
Number signal-to-noise ratio, or, current location test signal the bit error rate be less than known best relay position signal error rate, then will
The value of the modifying factor is reset, and the value of continuous negative-feedback counter is reset；
If comparison result is the letter that the signal-to-noise ratio of the test signal of current location is less than the signal of known best relay position
Ratio of making an uproar will then move or, the bit error rate of the test signal of current location is greater than the signal error rate of known best relay position
Relaying returns to the intermediate position locating for t-1 time slot, and continuous negative-feedback counter is added 1 by mobile relay, and by the modifying factor
The value of son is set as the opposite number of last random perturbation step-length.
Judge whether the value of continuous negative-feedback counter reaches pre-set continuous negative-feedback threshold value, what is reached herein contains
Justice is more than or equal to illustrating current random perturbation if the value of continuous negative-feedback counter reaches the continuous negative-feedback threshold value
Step-length is not suitable for further accurate search, it should suitably reduce the random perturbation step-length, then mobile relay will be according to preset
Scale smaller random perturbation step-length, while by continuous negative-feedback counter O reset, and return to step be moved in C it is next
The step of a intermediate position, it is possible to understand that, hereafter it will will carry out according to newly determining random perturbation step-length based on continuous negative anti-
It searches the mobile relay best relay position for presenting variable step.If the value of continuous negative-feedback counter is not up to the continuous negative-feedback threshold
Value, illustrates can also continue to then to be returned to step using current random perturbation step-length and be moved to next intermediate position in C
Step.
In embodiments of the present invention, setting negative-feedback counter is moved because during searching best relay position
Dynamic relaying is when around best relay position, it may appear that no matter moves a random perturbation step-length clockwise or counterclockwise
All will be so that transmission performance be deteriorated, i.e., therefore the signal-to-noise ratio that the signal-to-noise ratio of signal is less than known best relay position works as negative-feedback
For the value of counter after reaching pre-set threshold value, mobile relay will reduce the step-length of its movement, by changing step-length, come
Reduce the error locating for mobile relay between intermediate position and best relay position.
In embodiments of the present invention, in embodiments of the present invention, by setting negative-feedback counter and according to presetting
Step-length reduce ratio and reduce random perturbation step-length, enable to intermediate position locating for mobile relay to become closer in best
After position, and complete the search of best relay position.
In embodiments of the present invention, test signal is received by mobile relay, and is sent to destination and carries out current location
Calculating with the communication performance of known best relay position and compare, according to the comparison result and random perturbation of destination feedback
Step-length is moved to next intermediate position, and returns and execute the step of mobile relay receives signal, by recycling above-mentioned process
Enable mobile relay during being constantly moved to next intermediate position based on step-length, moves closer to best relay position
It sets, and determines best relay position, the performance of relayed communications, and the position without obtaining source and destination can be improved in this method
Information is not necessarily to multiple antennas, and only needs destination to feed back a bit information and carry out search control to mobile relay, still can be pre-
Best relay location point is determined within the scope of fixed track, expands the scope of application.
Technical method in embodiment in order to better understand the present invention is described below and utilizes the skill in the embodiment of the present invention
Art scheme determines best relay position, as follows:
In the case where indicating communication performance power on the basis of signal-to-noise ratio,
Initial step length are as follows:
The coordinate position of source are as follows: (xs,ys,zs)=(0, -700,1)；
The coordinate position of destination are as follows: (xd,yd,zd)=(30,600,1)；
The coordinate position of mobile relay are as follows: (r, θ (n), z)=(500, θ (n), 30).
Referring to Fig. 3, the corresponding relationship of the signal-to-noise ratio for the move angle and signal of mobile relay in the embodiment of the present invention
Analogous diagram.In Fig. 3, horizontal axis indicates that the move angle of mobile relay, the longitudinal axis indicate corresponding with the move angle of mobile relay
The intermediate position signal-to-noise ratio end to end, this is end-to-end to refer to from source to destination.
Referring to Fig. 4, for the analogous diagram of the corresponding relationship of timeslot number and signal-to-noise ratio in the embodiment of the present invention, which is
Refer to during the technical solution described according to the present invention, the corresponding different signal-to-noise ratio of different time slots.
In Fig. 4, horizontal axis indicates that mobile relay searches the timeslot number that optimum position is spent in the process, and the longitudinal axis indicates signal
Signal-to-noise ratio, it can be seen that best relay position is found in the 40th time slot in the position that 7dB is just found when searching the 25th time slot
It sets, that is, the maximum point in Fig. 4.
In embodiments of the present invention, the power of communication performance can also be described with the bit error rate, and can be used and this hair
Similar technical idea utilizes the bit error rate to determine best relay position in bright embodiment.
Referring to Fig. 5, in the embodiment of the present invention, when determining best relay position using the bit error rate, the shifting of mobile relay
The analogous diagram of corresponding relationship between dynamic angle and the signal-to-noise ratio of signal.
In Fig. 5 horizontal axis indicate mobile relay the angle in cylindrical coordinates, ordinate indicate it is corresponding with the angle in
After the end-to-end bit error rate of position, that is, from source to the bit error rate of destination.
Referring to Fig. 6, in the embodiment of the present invention, when determining best relay position with the bit error rate, timeslot number and the bit error rate
Between corresponding relationship analogous diagram, in Fig. 6 horizontal axis indicate mobile relay search best relay position spend volume timeslot number, indulge
Axis indicates the bit error rate end to end, it will be seen from figure 6 that bit error rate convergence terminates when searching the 70th time slot, i.e. in Fig. 6
Minimum point.
Based on foregoing description, best relay is searched according to the thought in technical solution of the present invention using the bit error rate or signal-to-noise ratio
The effect of position be it is the same, therefore, pressed using the other kinds of communication performance parameter other than the bit error rate or signal-to-noise ratio
Determine that the technical solution of best relay position also belongs to the protection model of the embodiment of the present invention according to the thought in technical solution of the present invention
It encloses.
Referring to Fig. 7, for the mobile relay best relay position based on continuous negative-feedback variable step in the embodiment of the present invention
Set the schematic diagram of the structure of hunting system, comprising:
Mobile relay 701, source 702 and destination 703；
Wherein, mobile relay 701 receives the test signal sent from source 702 on any position of trapped orbit,
And amplification forwarding, to destination 703, destination 703 receives the signal that mobile relay 701 is sent and calculates this communication performance, it should
Communication performance includes: signal-to-noise ratio and the bit error rate, and according to the communicativeness of calculated result and the known best relay position saved
Can be carried out and compare, and generate a bit information feed back to the mobile relay, a bit information indicate present communications performance with
The comparison result of the communication performance of the known best relay position saved a, that is, bit information includes receiving signal communication
The information whether performance improves, the known best relay position are the best position of the communication performance tested.Mobile relay 701
Current location information is recorded, and next position is moved to according to a bit information, random perturbation step-length and modifying factor, and
It is executed on any position of trapped orbit again, receives the test signal that sends from source 702, and amplification forwarding is to purpose
The step of holding 703, iterative cycles, until final determine best relay position, the best relay position are as follows: in preset search
The best position of communication performance in long, alternatively, communication performance best position when complete trapped orbit of mobile relay movement
It sets, alternatively, the communication performance meets the position of default requirement.
Specifically, if a bit information indicates that present communications performance is greater than the communicativeness of the known best relay position
Can, current location is recorded as known best relay position by mobile relay 701, and one disturbance step-length of random movement is to be moved to
Next intermediate position, i.e., it is determining according to the first modifying factor subvalue and random perturbation step-length and be moved in next and succeed to the throne
It sets.The first modifying factor subvalue is 0.When present communications performance is better than the communication performance of the known best relay position, modifying factor
The value of son is to make to reset processing, and therefore, the value of modifying factor, i.e. the first modifying factor subvalue are 0 at this time.
If a bit information indicates that present communications performance is less than the communication performance of the known best relay position, move
Relaying 701 is first back to last position, then one disturbance step-length of random movement is to be moved to next intermediate position, that is,
According to the random perturbation step-length and the second modifying factor subvalue determination and it is moved to next intermediate position, second modifying factor
Value is the opposite number of last random perturbation step-length.
Wherein, withIndicate the intermediate position of next time slot, θ (t) indicates current location, δ (t) indicate it is described with
Machine disturbs step-length, and ξ (t) indicates the modifying factor, then:T indicates timeslot number.
Judge that present communications performance is improved than the communication performance of the known best relay position saved after 701 on the move
When, that is, when being judged as that receiving signal performance improves, the value of the modifying factor and the value of continuous negative-feedback counter are reset,
For describing mobile relay 701 during searching best relay position, current location leads to the continuous negative-feedback counter
Believe read-around ratio of the performance than the known best relay alternate position spike saved.
When judging that present communications performance is poorer than the communication performance of the known best relay position saved, mobile relay
701 return to the position of a upper time slot, meanwhile, the value of the continuous negative-feedback counter is added 1, which is set as last
The opposite number of random perturbation step-length, and judge whether the value of the continuous negative-feedback counter reaches preset continuous negative-feedback threshold
Value.
If judging, the value of the continuous negative-feedback counter reaches the preset continuous negative-feedback threshold value, scaled to be somebody's turn to do
Random perturbation step-length, while by the continuous negative-feedback counter O reset and the step of being moved to next intermediate position is returned, if
Judge that the value of the continuous negative-feedback counter is not up to preset continuous negative-feedback threshold value, then returns to be moved in next and succeed to the throne
The step of setting.
Further, destination 703 it is best according to the present communications performance that is calculated and known to having saved in
After the comparison result of the communication performance of position, the known optimum receiving signal communication performance in memory is updated.
In embodiments of the present invention, test signal is received by mobile relay, and is sent to destination and carries out current location
Calculating with the communication performance of known best relay position and compare, according to the comparison result and random perturbation of destination feedback
Step-length is moved to next intermediate position, and returns and execute the step of mobile relay receives signal, by recycling above-mentioned process
Enable mobile relay during being constantly moved to next intermediate position based on step-length, moves closer to best relay position
It sets, and determines best relay position, the performance of relayed communications, and the position without obtaining source and destination can be improved in this method
Information is not necessarily to multiple antennas, and only needs destination to feed back a bit information and carry out search control to mobile relay, still can be pre-
Best relay location point is determined within the scope of fixed track, expands the scope of application.
Those of ordinary skill in the art will appreciate that implement the method for the above embodiments be can be with
Relevant hardware is instructed to complete by program, the program can store in a kind of computer readable storage medium, on
Stating the storage medium mentioned can be read-only memory, disk or CD etc..
Best relay position searching method and system to provided by the present invention based on continuous negative-feedback variable step above
It is described in detail, for those of ordinary skill in the art, thought according to an embodiment of the present invention, in specific embodiment
And there will be changes in application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of best relay position searching method based on continuous negative-feedback variable step, which is characterized in that the method for searching
Step includes:
Step A, mobile relay receives the test signal sent from source on any position of circuit orbit, and amplifies and turn
It is sent to destination；
Step B, the destination receive the signal that the mobile relay is sent and calculate this communication performance, the communication performance
Include: signal-to-noise ratio and the bit error rate, and is compared according to calculated result and the communication performance of the known best relay position saved
Compared with, and generate a bit information and feed back to the mobile relay, a bit information indicates present communications performance and has protected
The comparison result of the communication performance for the known best relay position deposited, the known best relay position is the communicativeness tested
The best position of energy；
Step C, the mobile relay record current location information, and the present communications performance indicated based on a bit information with most
The comparison information of good intermediate position communication performance carries out the setting of random perturbation step-length and modifying factor subvalue, according to described random
Disturbance step-length and modifying factor subvalue determine next intermediate position, and return step A, until final determine best relay position,
The best relay position are as follows: the best position of communication performance in preset search duration, alternatively, the mobile relay is mobile
Communication performance best position when the complete circuit orbit, alternatively, the communication performance meets the position of default requirement
It sets.
2. method for searching as described in claim 1, which is characterized in that the method also includes:
With yRIndicate the test signal that the mobile relay receives, then:
R+n1, wherein x indicates the test signal of the source transmitting, PSIndicate the transmitting of the source
Power, LS, R indicate the source to the mobile relay first jump communication free space path loss, n1Indicate institute
State the additive white Gaussian noise of the first jump communication；
Before carrying out the search of best relay position, the mobile relay initializes its location information, and receives and send out from the source
The test signal penetrated and amplification forwarding are to destination；
The destination calculates initial communication performance, and saves as original records.
3. method for searching as described in claim 1, which is characterized in that the method also includes:
With yDIndicate the signal that the mobile relay that the destination receives is sent, then:
yD=yRGLR,D+n2, wherein wherein yRIndicate that the test signal that the mobile relay receives, G indicate that relaying increases
Benefit, LR, D indicate the mobile relay to the destination second jump communication free space path loss, n2Indicate described
Two jump the additive white Gaussian noise of communication.
4. method for searching as described in claim 1, which is characterized in that worked as in the step C based on what a bit information indicated
The comparison information of preceding communication performance and best relay location communication performance, progress random perturbation step-length and modifying factor subvalue's sets
It is fixed, next intermediate position is determined according to the random perturbation step-length and modifying factor subvalue, comprising:
If a bit information indicates that present communications performance is greater than the communication performance of the known best relay position, will work as
Front position is recorded as known best relay position, then determining and mobile according to the random perturbation step-length and the first modifying factor subvalue
To next intermediate position, the first modifying factor subvalue is 0；
If a bit information indicates that present communications performance is less than the communication performance of the known best relay position, described
Mobile relay first returns to last position, determining and mobile further according to the random perturbation step-length and the second modifying factor subvalue
To next intermediate position, the second modifying factor subvalue is the opposite number of last random perturbation step-length；
Wherein, timeslot number is indicated with t,Indicate that the intermediate position of next time slot, θ (t) indicate known best relay position
It sets, δ (t) indicates the random perturbation step-length, and ξ (t) indicates the modifying factor, then:
5. method for searching as claimed in claim 4, which is characterized in that the method also includes:
When present communications performance is improved than the communication performance of the known best relay position saved, then by the modifying factor
Value and the value of continuous negative-feedback counter reset, the continuous negative-feedback counter is being searched for describing the mobile relay
During best relay position, the communication performance of current location is poorer than the communication performance of the known best relay position saved
Read-around ratio；
When present communications performance is poorer than the communication performance of the known best relay position saved, returned in the mobile relay
While the position of a upper time slot, the value of the continuous negative-feedback counter is added 1, and set the value of the modifying factor to
The opposite number of last random perturbation step-length, and judge whether the value of the continuous negative-feedback counter reaches preset continuous
Negative-feedback threshold value；
If judging, the value of the continuous negative-feedback counter reaches the preset continuous negative-feedback threshold value, in preset ratio
The random perturbation step-length is reduced, while being moved in the continuous negative-feedback counter O reset and return step C is next
A intermediate position；
If judging, the value of the continuous negative-feedback counter is not up to preset continuous negative-feedback threshold value, in return step C
It is moved to next intermediate position.
6. method for searching as claimed in claim 5, which is characterized in that the method also includes:
The destination is according to the communication of the present communications performance that is calculated and the known best relay position saved
The comparison result of performance updates the communication performance of the known best relay position in memory.
7. a kind of best relay position hunting system based on continuous negative-feedback variable step, which is characterized in that the hunting system
Including mobile relay, source and destination；
Wherein, the mobile relay receives the test signal sent from the source on any position of circuit orbit, and
Amplification forwarding is to the destination；
The destination receives the signal that the mobile relay is sent and calculates this communication performance, and the communication performance includes:
Signal-to-noise ratio and the bit error rate, and be compared according to calculated result with the communication performance of the known best relay position saved, with
And generate a bit information and feed back to the mobile relay, a bit information indicates present communications performance and has saved
Know the comparison result of the communication performance of best relay position, the known best relay position is that the communication performance tested is best
Position；
The mobile relay records current location information, and the present communications performance and best relay indicated based on a bit information
The comparison information of location communication performance carries out the setting of random perturbation step-length and modifying factor subvalue, is walked according to the random perturbation
Long and modifying factor subvalue determines next intermediate position, and executes the test signal for receiving and sending from the source again, and
The step of amplification forwarding to destination, until final determine best relay position, the best relay position are as follows: default
Search duration in the best position of communication performance, alternatively, being communicated when the mobile complete circuit orbit of the mobile relay
The best position of performance, alternatively, the communication performance meets the position of default requirement.
8. hunting system as claimed in claim 7, which is characterized in that
If a bit information indicates that present communications performance is greater than the communication performance of the known best relay position, described
Current location is recorded as known best relay position by mobile relay, then according to the random perturbation step-length and the first modifying factor
Value determines and is moved to next intermediate position, and the first modifying factor subvalue is 0；
If a bit information indicates that present communications performance is less than the communication performance of the known best relay position, described
Mobile relay first returns to last position, determining and mobile further according to the random movement step-length and the second modifying factor subvalue
To next intermediate position, the value of second modifying factor is the opposite number of last random perturbation step-length；
Wherein, timeslot number is indicated with t,Indicate that the intermediate position of next time slot, θ (t) indicate known best relay position
It sets, δ (t) indicates the random perturbation step-length, and ξ (t) indicates the modifying factor, then:
9. hunting system as claimed in claim 7 or 8, which is characterized in that
When the mobile relay judges that present communications performance is improved than the communication performance of the known best relay position saved,
The value of the modifying factor and the value of continuous negative-feedback counter are reset, the continuous negative-feedback counter is described for describing
For mobile relay during searching best relay position, the communication performance of current location is than the known best relay position that has saved
The read-around ratio for the communication performance difference set；
When judging that present communications performance is poorer than the communication performance of the known best relay position saved, in the mobile relay
While returning to the position of a upper time slot, the value of the continuous negative-feedback counter is added 1, and the value of the modifying factor is set
It is set to the opposite number of last random perturbation step-length, and judges whether the value of the continuous negative-feedback counter reaches preset
Continuous negative-feedback threshold value；
If judging, the value of the continuous negative-feedback counter reaches the preset continuous negative-feedback threshold value, the mobile relay
The scaled random perturbation step-length, at the same by the continuous negative-feedback counter O reset and return be moved in next
After the position the step of；
If judging, the value of the continuous negative-feedback counter is not up to preset continuous negative-feedback threshold value, and the mobile relay returns
Return the step of being moved to next intermediate position.
10. hunting system as claimed in claim 9, which is characterized in that
The destination is according to the communication of the present communications performance that is calculated and the known best relay position saved
The comparison result of performance updates the communication performance of the known best relay position in memory.
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| WO2017096540A1 (en) * | 2015-12-08 | 2017-06-15 | 深圳大学 | Method and system for seeking optimal relay position based on continuous negative feedback variable step length |
| WO2017096545A1 (en) * | 2015-12-08 | 2017-06-15 | 深圳大学 | Method and system for seeking optimal relay position based on timing mechanism |
| CN107222283B (en) * | 2017-04-11 | 2019-07-05 | 北京邮电大学 | WDM-FSO network node resource sharing method and system |
| CN107436601B (en) * | 2017-07-05 | 2019-11-26 | 深圳大学 | The position control method and device of the mobile device of adaptive noise feedback |
| CN109982310B (en) * | 2017-12-27 | 2020-11-13 | 中国移动通信集团北京有限公司 | A kind of base station position adjustment method and base station |
| CN113660689B (en) * | 2021-08-20 | 2024-02-06 | 芯河半导体科技(无锡)有限公司 | Method for testing forwarding performance of wireless repeater at different positions |
| CN116800330B (en) * | 2023-08-23 | 2023-11-03 | 成都迅翼卫通科技有限公司 | Quick satellite aligning method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8611273B2 (en) * | 2008-07-11 | 2013-12-17 | Interdigital Patent Holdings, Inc. | System level architectures for relayed uplink communication |
| CN104363612A (en) * | 2014-10-31 | 2015-02-18 | 西安电子科技大学 | Partitioned wireless sensor network repair method based on mobile relay scheduling |
| CN104509162A (en) * | 2012-07-13 | 2015-04-08 | 日本电气株式会社 | Methods, apparatuses and system for handover of a mobile relay node |
-
2015
- 2015-12-08 CN CN201510903914.3A patent/CN105554843B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8611273B2 (en) * | 2008-07-11 | 2013-12-17 | Interdigital Patent Holdings, Inc. | System level architectures for relayed uplink communication |
| CN104509162A (en) * | 2012-07-13 | 2015-04-08 | 日本电气株式会社 | Methods, apparatuses and system for handover of a mobile relay node |
| CN104363612A (en) * | 2014-10-31 | 2015-02-18 | 西安电子科技大学 | Partitioned wireless sensor network repair method based on mobile relay scheduling |
Non-Patent Citations (2)
| Title |
|---|
| "Dynamic UAV relay positioning for the ground-to-air uplink";Feng Jiang，A. Lee Swindlehurst;《2010 IEEE Globecom Workshops》;20101210;全文 |
| "Opportunistic cognitive relay with 1-bit feedback";Zhe Wang，Wei Zhang;《2014 IEEE International Conference on Communications (ICC)》;20140614;全文 |
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