CN107436601B - The position control method and device of the mobile device of adaptive noise feedback - Google Patents
The position control method and device of the mobile device of adaptive noise feedback Download PDFInfo
- Publication number
- CN107436601B CN107436601B CN201710541677.XA CN201710541677A CN107436601B CN 107436601 B CN107436601 B CN 107436601B CN 201710541677 A CN201710541677 A CN 201710541677A CN 107436601 B CN107436601 B CN 107436601B
- Authority
- CN
- China
- Prior art keywords
- mobile device
- capacity
- signal
- eavesdropping
- communication system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 49
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 136
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000003247 decreasing effect Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 244000078534 Vaccinium myrtillus Species 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- 235000017848 Rubus fruticosus Nutrition 0.000 description 1
- 235000003095 Vaccinium corymbosum Nutrition 0.000 description 1
- 235000017537 Vaccinium myrtillus Nutrition 0.000 description 1
- 235000021029 blackberry Nutrition 0.000 description 1
- 235000021014 blueberries Nutrition 0.000 description 1
- 230000010267 cellular communication Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0212—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory
- G05D1/0214—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory in accordance with safety or protection criteria, e.g. avoiding hazardous areas
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0276—Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle
- G05D1/028—Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle using a RF signal
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0276—Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle
- G05D1/0285—Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle using signals transmitted via a public communication network, e.g. GSM network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18504—Aircraft used as relay or high altitude atmospheric platform
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention provides the position control methods and device of a kind of mobile device of adaptive noise feedback, this method comprises: in man made noise's signal that the same time receives the useful signal that the source equipment is sent and the target end equipment is sent；Determine the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；Shift position is determined according to the SINR, and is moved to the shift position from the position that the mobile device is presently in.The embodiment of the present invention can determine the shift position of mobile device according to the SINR, be further advanced by the power of adaptive adjustment man made noise to optimize the secrecy capacity of communication system, be continued for secure communication.
Description
Technical field
The present invention relates to a kind of position controls for the mobile device that field of communication technology more particularly to adaptive noise are fed back
Method and device.
Background technique
With wireless communication bring convenience, people in daily life will largely using wireless network carry out it is sensitive and
Private information transmission.Conventional wireless network guarantees the safety of information by higher-layer encryption technology, assumes that eavesdropping end (is moved
Dynamic equipment) computing capability be limited.However, the computing capability for eavesdropping end is continuous with the high speed development of distributed computing
It improves, this hypothesis has become more and more unreliable.And safety of physical layer technology is receive more and more attention, utilizes
Legal target end equipment has better signal receiving quality (such as signal-to-noise ratio) than eavesdropping end, to guarantee the safety of communication,
Avoid relying on the limited hypothesis of eavesdropping end computing capability.
Collaboration communication method mainly includes the side such as relay selection and cooperation man made noise in existing safety of physical layer technology
Method.Relay selection can be and choosing set objective end " strong " transmission link to eavesdropping in end " weak " transmission link
After improving secrecy capacity.However, there is also the performances of obvious shortcoming, such as relay selection method for existing collaboration communication method
It is limited to the spatial position of relaying.
Summary of the invention
The embodiment of the invention discloses the position control method and device of a kind of mobile device of adaptive noise feedback, energy
Enough shift positions that mobile device is determined according to the SINR, the power for being further advanced by adaptive adjustment man made noise are next excellent
The secrecy capacity for changing communication system, is continued for secure communication.
First aspect of the embodiment of the present invention discloses a kind of position control method of the mobile device of adaptive noise feedback, answers
For the mobile device that communication system includes, the communication system further includes source equipment and target end equipment, the method packet
It includes:
The useful signal that the source equipment is sent is received in the same time and the artificial of target end equipment transmission is made an uproar
Acoustical signal；
Determine the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；
Shift position is determined according to the SINR, and is moved to the movement from the position that the mobile device is presently in
Position.
As an alternative embodiment, in first aspect of the embodiment of the present invention, it is described to be determined according to the SINR
Shift position includes:
Determine that the mobile device eavesdrops capacity the first of (n+1) time slot according to the SINR；
If the first eavesdropping capacity, which is greater than the mobile device, eavesdrops capacity the second of nth slot, by current shifting
Dynamic step-length increases to first movement step-length；The position being presently according to the mobile device and the first movement step-length,
Determine shift position；
If the first eavesdropping capacity, which is less than or equal to the mobile device, eavesdrops capacity the second of nth slot, will work as
Preceding moving step length is decreased to the second moving step length；The position being presently according to the mobile device and second movement
Step-length determines shift position；
Wherein, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot；(the n+
1) time slot is current time slots, and the nth slot is a upper time slot for the current time slots, and the n is positive integer；
As an alternative embodiment, in first aspect of the embodiment of the present invention, the method also includes:
Compare it is described first eavesdropping capacity and it is described second eavesdropping capacity size, will it is described first eavesdrop capacity with it is described
The biggish eavesdropping capacity of numerical value is determined as the communication system in the optimal eavesdropping appearance of (n+1) time slot in second eavesdropping capacity
Amount；
The communication system is saved in the optimal eavesdropping capacity of (n+1) time slot.
As an alternative embodiment, in first aspect of the embodiment of the present invention, the method also includes:
The useful signal and man made noise's signal are handled, obtain processing signal, and the processing is believed
Number it is transmitted to the target end equipment.
Second aspect of the embodiment of the present invention discloses a kind of position control method of the mobile device of adaptive noise feedback, answers
For the target end equipment that communication system includes, the communication system further includes the mobile device and source equipment, feature
It is, which comprises
Determine the communication system (n+1) time slot the first secrecy capacity relative to the communication system n-th when
First variation tendency of the second secrecy capacity of gap, wherein second secrecy capacity be the communication system nth slot most
Good secrecy capacity, (n+1) time slot are current time slots, and the nth slot is a upper time slot for the current time slots,
The n is positive integer；
Determine the mobile device (n+1) time slot first eavesdropping capacity relative to the mobile device n-th when
Gap second eavesdropping capacity the second variation tendency, wherein it is described second eavesdropping capacity be the mobile device nth slot most
Good eavesdropping capacity；
Determine the mobile device in the Signal to Interference plus Noise Ratio SINR of same time received signal, wherein the movement is set
Standby in same time received signal includes setting from man made noise's signal of the target end equipment and from source
Standby useful signal；
According to first variation tendency, second variation tendency and the SINR, the target end equipment is adjusted
Transmit the transimission power of man made noise's signal.
As an alternative embodiment, in second aspect of the embodiment of the present invention, the method also includes:
The size for comparing first secrecy capacity Yu second secrecy capacity, by first secrecy capacity with it is described
The biggish secrecy capacity of numerical value is determined as the communication system in the optimal secrecy appearance of (n+1) time slot in second secrecy capacity
Amount；And
Compare it is described first eavesdropping capacity and it is described second eavesdropping capacity size, will it is described first eavesdrop capacity with it is described
The biggish eavesdropping capacity of numerical value is determined as the communication system in the optimal eavesdropping appearance of (n+1) time slot in second eavesdropping capacity
Amount；
The communication system is saved in the optimal secrecy capacity of (n+1) time slot and the communication system
In the optimal eavesdropping capacity of (n+1) time slot.
As an alternative embodiment, in second aspect of the embodiment of the present invention, the determination communication system
(n+1) time slot the first secrecy capacity relative to the communication system nth slot the second secrecy capacity first become
Before change trend, the method also includes:
Artificial noise signal is sent to the mobile device；
The processing signal of the mobile device forwarding is received, the processing signal is that the mobile device is manually made an uproar described
Acoustical signal carries out that treated with the useful signal received from source equipment in the same time signal；
The useful signal is obtained from the processing signal.
As an alternative embodiment, in second aspect of the embodiment of the present invention, it is described according to first variation
Trend, second variation tendency and the SINR adjust the biography that the target end equipment transmits man made noise's signal
Defeated power includes:
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
The eavesdropping capacity boost for showing the mobile device, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
Show that the eavesdropping capacity of the mobile device is not promoted, determines
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
It indicates that the eavesdropping capacity of the mobile device does not decline, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
The eavesdropping capacity decline for indicating the mobile device, determines
Wherein, the PDIt (n+1) is the biography of target end equipment man made noise's signal described in (n+1) slot transmission
Defeated power, the PD(n) transimission power of man made noise's signal is transmitted in nth slot for the target end equipment；It is described
γRIt (n+1) is SINR of the mobile device in (n+1) time slot received signal, the γRIt (n) is the mobile device
In the SINR of nth slot received signal.
The third aspect of the embodiment of the present invention discloses a kind of position control of mobile device, runs on communication system and includes
Mobile device, comprising:
Receiving unit, for receiving the useful signal and the target end equipment that the source equipment is sent in the same time
Man made noise's signal of transmission；
Determination unit, for determining the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；
The determination unit is also used to determine shift position according to the SINR；
Mobile unit, for being moved to the shift position from the position that the mobile device is presently in.
As an alternative embodiment, the determination unit is according in the third aspect of the embodiment of the present invention
SINR determines the mode of shift position specifically:
Determine that the mobile device eavesdrops capacity the first of (n+1) time slot according to the SINR；
If the first eavesdropping capacity, which is greater than the mobile device, eavesdrops capacity the second of nth slot, by current shifting
Dynamic step-length increases to first movement step-length；The position being presently according to the mobile device and the first movement step-length,
Determine shift position；
If the first eavesdropping capacity, which is less than or equal to the mobile device, eavesdrops capacity the second of nth slot, will work as
Preceding moving step length is decreased to the second moving step length；The position being presently according to the mobile device and second movement
Step-length determines shift position；
Wherein, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot；(the n+
1) time slot is current time slots, and the nth slot is a upper time slot for the current time slots, and the n is positive integer；
As an alternative embodiment, the position of the mobile device is controlled in the third aspect of the embodiment of the present invention
Device processed further include:
Compare determination unit, it, will be described for the size of the first eavesdropping capacity and the second eavesdropping capacity
The biggish eavesdropping capacity of numerical value is determined as the communication system at (n+1) in first eavesdropping capacity and the second eavesdropping capacity
The optimal eavesdropping capacity of time slot；
Storage unit, for the communication system in the optimal eavesdropping capacity of (n+1) time slot.
As an alternative embodiment, the position of the mobile device is controlled in the third aspect of the embodiment of the present invention
Device processed further include:
Transmission unit is handled, for handling the useful signal and man made noise's signal, obtains processing letter
Number, and the processing signal is transmitted to the target end equipment.
Fourth aspect of the embodiment of the present invention discloses a kind of position control of mobile device, runs on communication system and includes
Target end equipment, comprising:
Determination unit, for determining that the communication system is led in first secrecy capacity of (n+1) time slot relative to described
First variation tendency of the letter system in the second secrecy capacity of nth slot, wherein second secrecy capacity is the communication system
System is in the optimal secrecy capacity of nth slot, and (n+1) time slot is current time slots, when the nth slot is described current
A upper time slot for gap, the n are positive integer；
The determination unit, be also used to determine the mobile device (n+1) time slot first eavesdropping capacity relative to
Second variation tendency of the mobile device in the second eavesdropping capacity of nth slot, wherein the second eavesdropping capacity is described
Mobile device is in the optimal eavesdropping capacity of nth slot；
The determination unit is also used to obtain the mobile device in the Signal to Interference plus Noise Ratio of same time received signal
SINR, wherein the mobile device includes manually making an uproar from the target end equipment in same time received signal
Acoustical signal and useful signal from source equipment；
Adjustment unit, for according to first variation tendency, second variation tendency and the SINR, adjustment
The target end equipment transmits the transimission power of man made noise's signal.
As an alternative embodiment, the position of the mobile device is controlled in fourth aspect of the embodiment of the present invention
Device processed further include:
Compare determination unit, it, will be described for the size of first secrecy capacity and second secrecy capacity
The biggish secrecy capacity of numerical value is determined as the communication system at (n+1) in first secrecy capacity and second secrecy capacity
The optimal secrecy capacity of time slot；
The relatively determination unit is also used to the size of the first eavesdropping capacity described in comparison and the second eavesdropping capacity,
The biggish eavesdropping capacity of numerical value in the first eavesdropping capacity and the second eavesdropping capacity is determined as the communication system to exist
The optimal eavesdropping capacity of (n+1) time slot；
Storage unit, for saving the communication system in the optimal secrecy capacity of (n+1) time slot and the communication
System is in the optimal eavesdropping capacity of (n+1) time slot.
As an alternative embodiment, the position of the mobile device is controlled in fourth aspect of the embodiment of the present invention
Device processed further include:
Transmission unit, for the determination unit determine system (n+1) time slot the first secrecy capacity relative to
The system is before the first variation tendency of the second best secrecy capacity of nth slot, described in the transmission of Xiang Suoshu mobile device
Man made noise's signal；
Receiving unit, for receiving the processing signal of the mobile device forwarding, the processing signal is that the movement is set
For man made noise's signal is carried out with the useful signal received in the same time from the source equipment, treated believes
Number；
The acquiring unit is also used to obtain the useful signal from the processing signal.
As an alternative embodiment, the adjustment unit is according in fourth aspect of the embodiment of the present invention
First variation tendency, second variation tendency and the SINR adjust the target end equipment and transmit the man made noise
The mode of the transimission power of signal specifically:
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
The eavesdropping capacity boost for showing the mobile device, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
Show that the eavesdropping capacity of the mobile device is not promoted, determines
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
It indicates that the eavesdropping capacity of the mobile device does not decline, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
The eavesdropping capacity decline for indicating the mobile device, determines
Wherein, the PDIt (n+1) is the biography of target end equipment man made noise's signal described in (n+1) slot transmission
Defeated power, the PD(n) transimission power of man made noise's signal is transmitted in nth slot for the target end equipment；It is described
γRIt (n+1) is SINR of the mobile device in (n+1) time slot received signal, the γRIt (n) is the mobile device
In the SINR of nth slot received signal.
Compared with prior art, the embodiment of the present invention have it is following the utility model has the advantages that
In the embodiment of the present invention, mobile device can the same time receive the useful signal that the source equipment is sent and
Man made noise's signal that the target end equipment is sent, determines the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；Into
One step, mobile device can determine shift position according to the SINR, and move from the position that the mobile device is presently in
It moves to the shift position.As it can be seen that through the embodiment of the present invention, mobile device can be according to the information that itself is received (such as
SINR it) determines the shift position of mobile device, is further advanced by the power of adaptive adjustment man made noise to optimize communication
The secrecy capacity of system, is continued for secure communication.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is a kind of model of communication system schematic diagram disclosed by the embodiments of the present invention；
Fig. 2 is a kind of stream of the position control method of the mobile device of adaptive noise feedback disclosed by the embodiments of the present invention
Journey schematic diagram；
Fig. 3 is the position control method of the mobile device of another adaptive noise feedback disclosed by the embodiments of the present invention
Flow diagram；
Fig. 4 is the position control method of the mobile device of another adaptive noise feedback disclosed by the embodiments of the present invention
Flow diagram；
Fig. 5 is a kind of message capacity disclosed by the embodiments of the present invention, secrecy capacity, the convergence graph for eavesdropping capacity；
Fig. 6 is a kind of structural schematic diagram of the position control of mobile device disclosed by the embodiments of the present invention；
Fig. 7 is the structural schematic diagram of the position control of another mobile device disclosed by the embodiments of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing and " the
Two " etc. are not use to describe a particular order for distinguishing different objects.In addition, term " includes " and " having " and it
Any deformation, it is intended that cover and non-exclusive include.Such as it contains the process, method of a series of steps or units, be
System, product or equipment are not limited to listed step or unit, but optionally further comprising the step of not listing or list
Member, or optionally further comprising other step or units intrinsic for these process, methods, product or equipment.
The embodiment of the invention discloses the position control methods and device of a kind of mobile device of adaptive noise feedback.With
Under be combined attached drawing and be described in detail.
Referring to Figure 1, Fig. 1 is a kind of model of communication system schematic diagram disclosed by the embodiments of the present invention.As shown in Figure 1,
The communication system includes that source equipment S, mobile device R and target end equipment D can also include optionally interception facility E.
Wherein, source equipment S be mainly used for send useful signal, source equipment S can include but is not limited to base station with
And user equipment.Base station (such as access point), which can be, to be referred to the accession in net in the sky on interface by one or more sectors and nothing
The equipment of line terminal communication.The air frame that base station can be used for receive and IP grouping are mutually converted, as wireless terminal and
Access the router between the rest part of net, wherein the rest part for accessing net may include Internet protocol (IP) network.Base station
It can also coordinate the attribute management to air interface.For example, base station can be base station (BTS, Base in GSM or CDMA
Transceiver Station), it is also possible to the base station (NodeB) in WCDMA, can also be the evolved base station in LTE
(NodeB or eNB or e-NodeB, evolutional Node B), the embodiment of the present invention is without limitation.User equipment can wrap
Include but be not limited to smart phone, laptop, personal computer (Personal Computer, PC), personal digital assistant
(Personal Digital Assistant, PDA), mobile internet device (Mobile Internet Device, MID),
Wearable device (such as smartwatch, Intelligent bracelet, intelligent glasses) each class of electronic devices, wherein the operation system of the user equipment
System may include but be not limited to Android operation system, IOS operating system, Symbian (Saipan) operating system, Black Berry
(blackberry, blueberry) operating system, Windows Phone8 operating system etc., the embodiment of the present invention is without limitation.
Wherein, mobile device R be with signal forwarding capability and the equipment that can be moved in certain altitude, may include but
It is not limited to unmanned plane, aircraft, satellite etc..
Wherein, target end equipment D is mainly used for receiving and transmitting signal, for example sends artificial noise signal and receive useful signal
Deng target end equipment D can include but is not limited to base station and user equipment.
Wherein, interception facility E is mainly used for receiving the signal that mobile device R is sent, and interception facility E may include but not
It is limited to base station, user equipment, communication truck etc..
The wireless relay collaborative network that communication system shown in FIG. 1 is suitable for double bounce establishes three by origin of O in Fig. 1
Dimension space coordinate system, wherein being set comprising two surface units (a source equipment S and a target end equipment D) and a movement
Standby R.All equipment is all only equipped with single antenna, and source equipment S is communicated by the help of mobile device R with target end equipment D.
Therefore, our S → R are referred to as the first jump communication, and R → D is the second jump communication.It is jumped in communication first, d1Source equipment S with
Corresponding direct path distance, l between mobile device R1And l2It is corresponding reflection path between source equipment S and mobile device R
Distance.It is jumped in communication second, d2It is corresponding direct path distance, l between mobile device R and target end equipment D3And l4It is
Corresponding reflection path distance between mobile device R and target end equipment D.In fig. 1, it is assumed that source equipment S and target side are set
Between standby D because the influence of path loss or shadow effect may be not present direct path, and mobile device R can will be intercepted
Information is inerrably transmitted to interception facility E.
Wherein, mobile device R may belong to a heterogeneous network and possess different safety inspections, mobile device R mono-
Denier starting will may steal signal when helping forward signal.In this scene, although in the process of signal transmission
In need mobile device R to help forward signal, but for secure communication, it is desirable to which the signal of source equipment S transport is to shifting
It is secrecy for dynamic equipment R.
It should be noted that model of communication system shown in FIG. 1 especially suitable for source equipment S energy constraint but still
The scene that need to be securely communicated by mobile device R, for example, disaster area, the transmission energy of source equipment S is relatively small
(may be damaged), but there are also sufficient energy back information by target end equipment D.
In Fig. 1, mobile device R will be normally at a relatively high height, and the transmission of signal depends on ground
Reflection.And traditional cellular communication model is only absorbed in the covering of ground level without for the vertical channel about height
Sufficiently exact characteristic description is provided.Therefore, in the present invention, selection is based on height and distance (height and distance-
Dependent mobile relay channel model), it is built upon on the basis of two diameter propagation models and considers antenna performance
The channel model of mobile relay, therefore the vertical channel characteristic about height can accurately be described, rather than only close
It infuses in covered ground.This mobile relay channel model can be described as:
Wherein, d is the distance between two communication equipments, l1And l2It is the distance of reflection path respectively, Δ φ is the phase of signal
Potential difference.From formula (1), it can be seen that the definition of path loss L is based on transmitted signal wavelengths λ, highly relevant direct projection road
Diameter antenna gain Gl(h), highly relevant reflection path antenna gain Gr(h), highly relevant propagation coefficient γ (h) and ground
Reflection coefficient ε.Propagation coefficient γ (h) is defined as:
Wherein, htIt is the height of sender, hrIt is the height and γ of recipient0It is the attenuation coefficient of maximum possible.Height phase
The direct path antenna gain G of passl(h) it can indicate are as follows:
And highly relevant reflection path antenna gain Gr(h) it can indicate are as follows:
Wherein, ht,cIt is a height threshold and G0It is the channel gain of different channels model.
In communication system shown in Fig. 1, source equipment S and target end equipment D can send simultaneously to mobile device R and believe
Number, wherein what source equipment S was sent is useful signal, and what target end equipment D was sent is man made noise's signal, and mobile device R connects
After receiving useful signal and man made noise's signal, processing is amplified to useful signal and man made noise's signal, and will processing
Signal afterwards is transmitted to target end equipment D, and target end equipment D can obtain useful signal from treated the signal, into
One step, target end equipment D can be stolen with the variation tendency of the secrecy capacity of communication system (promoted or decline), mobile device R
The variation tendency (promoted or decline) and mobile device of auditory volume same time received signal SINR, described in adjustment
Target end equipment transmits the transimission power of man made noise's signal, meanwhile, mobile device R can determine the mobile device institute
Receive the Signal to Interference plus Noise Ratio SINR of signal；Shift position is determined according to the SINR, and from the position that the mobile device is presently in
It sets and is moved to the shift position, so as to determine the shift position of mobile device according to the SINR, further optimize
The secrecy capacity of communication system, is continued for secure communication.
Referring to Fig. 2, Fig. 2 is a kind of position control of the mobile device of adaptive noise feedback disclosed by the embodiments of the present invention
The flow diagram of method processed.Wherein, the position control method of the mobile device of adaptive noise feedback is applied to mobile set
It is standby, as shown in Fig. 2, the position control method of the mobile device of adaptive noise feedback may comprise steps of:
Step 201, mobile device receive the useful signal and the target side that the source equipment is sent in the same time
Man made noise's signal that equipment is sent.
Assuming that the source equipment sends useful signal x to the mobile deviceS.The source equipment transmission is described useful
Signal xSTransimission power be PS, wherein the useful signal x is transmitted between the source equipment and the mobile deviceSIt is produced
Raw path loss
The signal that the mobile device receives is
Wherein, η1(n+1) it is N that expression mean value, which is zero variance,01Multiple Gauss noise.
Assuming that target end equipment sends man made noise's signal x to the mobile deviceD, target end equipment transmission described in
Man made noise's signal xDTransimission power be PD, wherein it is transmitted between the target end equipment and the mobile device described artificial
Noise signal xDGenerated path loss
Wherein, (n+1) time slot is current time slots, and the nth slot is a upper time slot for the current time slots,
The n is positive integer.
Step 202, mobile device handle the useful signal and man made noise's signal, obtain processing letter
Number, and the processing signal is transmitted to the target end equipment.
Since the mobile device R is using the mode of amplification forwarding, the mobile device can will be received
Signal yR(n+1) multiplied by an amplification factor W (n+1), it is then forwarded to target end equipment D.
The processing signal that target end equipment D is received are as follows:
Wherein,Indicate the mobile device R with
The processing signal y is transmitted between the source equipmentD(n+1) path loss caused by, η2(n+1) indicate that mean value is zero side
Difference is N02Multiple Gauss noise.
Step 203, mobile device determine the Signal to Interference plus Noise Ratio SINR of the mobile device received signal.
Wherein, the SINR between the useful signal that mobile device receives and man made noise's signal can be expressed as
Mobile device can determine eavesdropping capacityWherein, surreptitiously
Auditory volume can be expressed as the mutual information between source equipment S and mobile device R.
Step 204, mobile device determine shift position according to the SINR, and from the position that the mobile device is presently in
It sets and is moved to the shift position.
Wherein, the mobile device determines that shift position includes: according to the SINR
Determine that the mobile device eavesdrops capacity the first of (n+1) time slot according to the SINR；
If the first eavesdropping capacity, which is greater than the mobile device, eavesdrops capacity the second of nth slot, by current shifting
Dynamic step-length increases to first movement step-length；The position being presently according to the mobile device and the first movement step-length,
Determine shift position；
If the first eavesdropping capacity, which is less than or equal to the mobile device, eavesdrops capacity the second of nth slot, will work as
Preceding moving step length is decreased to the second moving step length；The position being presently according to the mobile device and second movement
Step-length determines shift position；
Wherein, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot；(the n+
1) time slot is current time slots, and the nth slot is a upper time slot for the current time slots, and the n is positive integer；
Wherein, it is greater than the mobile device the case where the second of nth slot eavesdrops capacity in the first eavesdropping capacity
Under, need further to judge to accumulate whether positive feedback counter is more than accumulation positive feedback counter threshold, if so, described in executing
Current moving step length is increased into first movement step-length；Equally, it is less than or equal to the shifting in the first eavesdropping capacity
Dynamic equipment in the case where the second of nth slot eavesdrops capacity, need further judge accumulation negative-feedback counter whether be more than
Negative-feedback counter threshold is accumulated, if so, current moving step length is decreased to the second moving step length described in executing.Its
In, in order to avoid moving step length is honest too fast, it is also necessary to which positive feedback counter threshold Dynamic gene removes adjustment accumulation positive feedback meter
Number device threshold value.
It illustrates specific as follows:
The initialization of relevant parameter can be carried out first, it is assumed that initial position of the R (x (0), y (0)) as mobile device R,
It is arranged Dynamic gene ξ (0)=0, when initial, optimal secrecy capacity CS,bestAnd optimal eavesdropping capacity C (0)=0R,best(0)
=0.
Specifically, corresponding algorithm is as follows:
Wherein, CNFor continuous negative-feedback counter, CPTo accumulate positive feedback counter, CT1For feedback counter threshold value, CT2
Be negative feedback counter threshold value, ΔTBe positive the feedback counter adjusting thresholds factor, δ0It (n+1) is moving step length, RIFor step-length increasing
The big factor, RDReduce the factor for step-length.
Mobile device determines that next shift position of the mobile device is R (x (n+2), y (n according to the feedback information
+ 2))=Rbest(x (n+1), y (n+1))+ξ (n+1)+δ (n+1), further, mobile device can be moved to R (x (n+2), y
The location of (n+2)).
The size of step 205, the mobile device first eavesdropping capacity and the second eavesdropping capacity, by described the
The biggish eavesdropping capacity of numerical value is determined as the communication system at (n+1) in one eavesdropping capacity and the second eavesdropping capacity
The optimal eavesdropping capacity of gap.
In the embodiment of the present invention, the eavesdropping capacity being stored in the memory of mobile device be all it is optimal, i.e., described second
Eavesdropping capacity is the communication system in the optimal eavesdropping capacity of nth slot；Mobile device needs best in real-time update memory
Eavesdropping capacity, it is optimal eavesdropping capacity update rule are as follows:
CR,best(n+1)=max (CR,best(n),CR(n+1))
According to the update rule of above-mentioned optimal eavesdropping capacity, mobile device needs the first eavesdropping capacity and institute
The size for stating the second eavesdropping capacity, by the biggish eavesdropping capacity of numerical value in the first eavesdropping capacity and the second eavesdropping capacity
It is determined as the communication system in the optimal eavesdropping capacity of (n+1) time slot.
Step 206, mobile device save the communication system in the optimal eavesdropping capacity of (n+1) time slot.
In the method flow described in Fig. 2, mobile device can receive what the source equipment was sent in the same time
Man made noise's signal that useful signal and the target end equipment are sent, determines that the letter of the mobile device received signal is dry and makes an uproar
Compare SINR；Further, mobile device can determine shift position according to the SINR, and be presently in from the mobile device
Position be moved to the shift position.As it can be seen that through the embodiment of the present invention, the letter that mobile device can be received according to itself
(such as SINR) is ceased to determine the shift position of mobile device.
Referring to Fig. 3, Fig. 3 is the position of the mobile device of another adaptive noise feedback disclosed by the embodiments of the present invention
The flow diagram of control method.Wherein, the position control method of the mobile device of adaptive noise feedback is applied to target
End equipment, as shown in Fig. 2, the position control method of the mobile device of adaptive noise feedback may comprise steps of:
Step 301, target end equipment send man made noise's signal to the mobile device.
Where it is assumed that target end equipment sends man made noise's signal x to the mobile deviceD, target end equipment biography
Defeated man made noise's signal xDTransimission power be PD, wherein institute is transmitted between the target end equipment and the mobile device
State man made noise's signal xDShown in generated path loss such as above-mentioned formula (5), the correlation in formula (5) is specifically please referred to
Description, details are not described herein.
Step 302, target end equipment receive the processing signal of the mobile device forwarding.
Wherein, the processing signal be the mobile device by man made noise's signal in the same time from the source
Useful signal that end equipment receives carries out that treated signal.
Assuming that the source equipment sends useful signal x to the mobile deviceS.The source equipment transmission is described useful
Signal xSTransimission power be PS, wherein the useful signal x is transmitted between the source equipment and the mobile deviceSIt is produced
Shown in raw path loss such as above-mentioned formula (7), the associated description in formula (7) is specifically please referred to, details are not described herein.Target
End equipment receives shown in the processing signal such as above-mentioned formula (8) of the mobile device forwarding, specifically please refers to the phase in formula (8)
Description is closed, details are not described herein.
Step 303, target end equipment obtain the useful signal from the processing signal.
In the embodiment of the present invention, by the man made noise's signal x itself sent out known to target end equipment DD, therefore, target
End equipment D can remove the interference x to itselfD, obtain the useful signal are as follows:
Step 304, target end equipment determine the communication system (n+1) time slot the first secrecy capacity relative to institute
Communication system is stated in the first variation tendency of the second secrecy capacity of nth slot.
In the embodiment of the present invention, target end equipment can be calculated between the useful signal received and man made noise's signal
Signal to Interference plus Noise Ratio (SINR, Signal to Interference plus Noise Ratio) is
Amplification factor W (n+1) can be defined as:
Target end equipment can determine message capacityWherein, institute
Mutual information between source equipment S and target end equipment D can be indicated by stating message capacity.The eavesdropping capacity of mobile device is such as public
Shown in formula (10), target end equipment determines the communication system in the first secrecy capacity C of (n+1) time slots(n+1)=[CD
(n+1)-CR(n+1)]+(15), wherein。
Wherein, second secrecy capacity is the communication system in the optimal secrecy capacity of nth slot.Target end equipment
Determine the communication system after first secrecy capacity of (n+1) time slot, so that it may by first secrecy capacity with it is described
Communication system is compared in the second secrecy capacity of nth slot, with the determination communication system the first of (n+1) time slot
Secrecy capacity relative to the communication system the second secrecy capacity of nth slot the first variation tendency.Wherein, first change
Change trend may include that the secrecy capacity of the communication system rises or the secrecy capacity of the communication system is constant or described logical
The secrecy capacity of letter system declines.
Step 305, target end equipment determine that the mobile device eavesdrops capacity relative to institute the first of (n+1) time slot
Mobile device is stated in the second variation tendency of the second eavesdropping capacity of nth slot.
Wherein, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot.Target end equipment
Capacity can be eavesdropped to obtain the mobile device in slave mobile device the first of (n+1) time slot, alternatively, target end equipment can
To pass through γD(n) and LR,D(n) mobile device is calculated in the first eavesdropping capacity of (n+1) time slot.
Target end equipment determines the communication system after the first eavesdropping capacity of (n+1) time slot, so that it may by this
Second eavesdropping capacity of the first eavesdropping capacity with the communication system in nth slot is compared, with the determination communication system
The second of capacity is eavesdropped the second of nth slot relative to the communication system in the first eavesdropping capacity of (n+1) time slot to become
Change trend.Wherein, which may include the rising of eavesdropping capacity or the communication system of the communication system
Eavesdrop that capacity is constant or the eavesdropping capacity decline of the communication system.
Step 306, target end equipment determine the mobile device in the Signal to Interference plus Noise Ratio of same time received signal
SINR。
Wherein, the mobile device includes from the artificial of the target end equipment in same time received signal
Noise signal and useful signal from source equipment.Target end equipment can be to obtain the mobile device in slave mobile device
In the Signal to Interference plus Noise Ratio SINR of same time received signal, exist alternatively, target end equipment can calculate the mobile device
The Signal to Interference plus Noise Ratio SINR of same time received signal.
Step 307, target end equipment according to first variation tendency, second variation tendency and the SINR,
Adjust the transimission power that the target end equipment transmits man made noise's signal.
Specifically, target end equipment is adjusted according to first variation tendency, second variation tendency and the SINR
The transimission power that the whole target end equipment transmits man made noise's signal includes:
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
The eavesdropping capacity boost for showing the mobile device, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
Show that the eavesdropping capacity of the mobile device is not promoted, determines
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
It indicates that the eavesdropping capacity of the mobile device does not decline, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
The eavesdropping capacity decline for indicating the mobile device, determines
Wherein, the PDIt (n+1) is the biography of target end equipment man made noise's signal described in (n+1) slot transmission
Defeated power, the PD(n) transimission power of man made noise's signal is transmitted in nth slot for the target end equipment；It is described
γRIt (n+1) is SINR of the mobile device in (n+1) time slot received signal, the γRIt (n) is the mobile device
In the SINR of nth slot received signal.
Specific algorithm is as follows:
The size of step 308, target end equipment first secrecy capacity and second secrecy capacity, will be described
The biggish secrecy capacity of numerical value is determined as the communication system at (n+1) in first secrecy capacity and second secrecy capacity
The optimal secrecy capacity of time slot.
In the embodiment of the present invention, the secrecy capacity and eavesdropping capacity being stored in the memory of target end equipment are all best
, i.e., described second secrecy capacity is the communication system in the optimal secrecy capacity of nth slot；Described second, which eavesdrops capacity, is
The mobile device is in the optimal eavesdropping capacity of nth slot.
Target end equipment needs optimal secrecy capacity and optimal eavesdropping capacity, optimal secrecy in real-time update memory
The update rule of capacity are as follows:
CS,best(n+1)=max (CS,best(n),CS(n+1))
The rule that optimal eavesdropping capacity updates are as follows:
CR,best(n+1)=max (CR,best(n),CR(n+1))
According to the update of above-mentioned optimal secrecy capacity rule, target end equipment need first secrecy capacity with
The size of second secrecy capacity holds the biggish secrecy of numerical value in first secrecy capacity and second secrecy capacity
Amount is determined as the communication system in the optimal secrecy capacity of (n+1) time slot.
The size of step 309, target the end equipment first eavesdropping capacity and the second eavesdropping capacity, will be described
The biggish eavesdropping capacity of numerical value is determined as the communication system at (n+1) in first eavesdropping capacity and the second eavesdropping capacity
The optimal eavesdropping capacity of time slot.
According to it is above-mentioned it is optimal eavesdropping capacity update rule, target end equipment need it is more described first eavesdropping capacity with
The size of the second eavesdropping capacity holds the biggish eavesdropping of numerical value in the first eavesdropping capacity and the second eavesdropping capacity
Amount is determined as the communication system in the optimal eavesdropping capacity of (n+1) time slot.
Step 310, target end equipment save the communication system in the optimal secrecy capacity of (n+1) time slot and described
Communication system is in the optimal eavesdropping capacity of (n+1) time slot.
In the method depicted in fig. 3, target end equipment (can be mentioned according to the variation tendency of the secrecy capacity of communication system
Rise or decline), the variation tendency (promoted or declined) of the eavesdropping capacity of mobile device and mobile device connect in the same time
The Signal to Interference plus Noise Ratio SINR of the signal of receipts adjusts the transimission power that the target end equipment transmits man made noise's signal, passes through
It adjusts the transimission power of man made noise's signal adaptively to optimize the secrecy capacity of communication system, makes secure communication constantly
It carries out.
Referring to Fig. 4, Fig. 4 is the position of the mobile device of another adaptive noise feedback disclosed by the embodiments of the present invention
The flow diagram of control method.Wherein, the position control method of the mobile device of adaptive noise feedback is set from source
Standby, mobile device and three side of target end equipment are come what is described, and step is referred to Fig. 2 or Fig. 3 some or all of in Fig. 4
In description, details are not described herein.As shown in Fig. 4, the position control method of the mobile device of adaptive noise feedback can be with
The following steps are included:
Step 401, source equipment send useful signal to mobile device.
Step 402, target end equipment send artificial noise signal to mobile device.
Wherein, step 401 occurs simultaneously with step 402.
Step 403, mobile device handle the useful signal and man made noise's signal, obtain processing letter
Number.
Step 404, mobile device are transmitted to the target end equipment for signal is handled.
Step 405, target end equipment obtain the useful signal from the processing signal.
Step 406, target end equipment determine the communication system (n+1) time slot the first secrecy capacity relative to institute
Communication system is stated in the first variation tendency of the second secrecy capacity of nth slot.
Step 407, target end equipment determine that the mobile device eavesdrops capacity relative to institute the first of (n+1) time slot
Mobile device is stated in the second variation tendency of the second eavesdropping capacity of nth slot.
Step 408, target end equipment determine the mobile device in the Signal to Interference plus Noise Ratio of same time received signal
SINR。
Step 409, target end equipment according to first variation tendency, second variation tendency and the SINR,
Adjust the transimission power that the target end equipment transmits man made noise's signal.
Step 410, mobile device determine the Signal to Interference plus Noise Ratio SINR of the mobile device received signal.
Step 411, mobile device determine shift position according to the SINR, and from the position that the mobile device is presently in
It sets and is moved to the shift position.
The size of step 412, target end equipment first secrecy capacity and second secrecy capacity, will be described
The biggish secrecy capacity of numerical value is determined as the communication system at (n+1) in first secrecy capacity and second secrecy capacity
The optimal secrecy capacity of time slot.
The size of step 413, target the end equipment first eavesdropping capacity and the second eavesdropping capacity, will be described
The biggish eavesdropping capacity of numerical value is determined as the communication system at (n+1) in first eavesdropping capacity and the second eavesdropping capacity
The optimal eavesdropping capacity of time slot.
Step 414, target end equipment save the communication system in the optimal secrecy capacity of (n+1) time slot and described
Communication system is in the optimal eavesdropping capacity of (n+1) time slot.
It is that a kind of message capacity, secrecy capacity and eavesdropping disclosed by the embodiments of the present invention are held please also refer to Fig. 5, Fig. 5
The convergence graph of amount.Wherein, source equipment S location coordinate is located at (- 1000m, 1000m, 10m), and the position of target end equipment D is sat
Mark is located at (1000m, -1000m, 10m), and carrier frequency f is set as 2020MHz, and the height of mobile device R is set as h=100m.People
The initial value of the transimission power of work noise signal is set as 0.5W, N01=N02=-80dBm, ground reflection coefficent ε=0.5 and declines
Fall factor gamma0=3.5, step-length enhancement factor RI=1.2, step-length reduces factor RD=0.7, positive feedback counter threshold CT1=2,
Negative-feedback counter threshold CT2=5, positive feedback counter threshold Dynamic gene ΔTThe initial position=1, R be (- 1500m ,-
1000m, 100m), initial step length δ0(0)=80m.CDIndicate message capacity, CSIndicate secrecy capacity, CRIndicate eavesdropping capacity.
In Fig. 5, mobile device can determine the shift position of mobile device according to the information (such as SINR) that itself is received, communication
System is improving secrecy capacity CSWhile, there is no sacrifice eavesdropping capacity CR, so that mobile device R be allowed sufficiently to trust communication system
System, is continued for secure communication.
Referring to Fig. 6, Fig. 6 is a kind of structural representation of the position control of mobile device disclosed by the embodiments of the present invention
Figure.Wherein, the position control of mobile device described in Fig. 6 can be used for executing adaptively makes an uproar described in Fig. 2 or Fig. 4
Step some or all of in the position control method of the mobile device of acoustic feedback, the correlation specifically referred in Fig. 2 or Fig. 4 are retouched
It states, details are not described herein.Wherein, the position control of the mobile device runs on the mobile device that communication system includes.Such as
Shown in Fig. 6, the position control of the mobile device may include:
Receiving unit 601, for receiving the useful signal and the target side that the source equipment is sent in the same time
Man made noise's signal that equipment is sent；
Determination unit 602, for determining the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；
The determination unit 602 is also used to determine shift position according to the SINR；
Specifically, the determination unit 602 determines the mode of shift position according to the SINR specifically:
Determine that the mobile device eavesdrops capacity the first of (n+1) time slot according to the SINR；
If the first eavesdropping capacity, which is greater than the mobile device, eavesdrops capacity the second of nth slot, by current shifting
Dynamic step-length increases to first movement step-length；The position being presently according to the mobile device and the first movement step-length,
Determine shift position；
If the first eavesdropping capacity, which is less than or equal to the mobile device, eavesdrops capacity the second of nth slot, will work as
Preceding moving step length is decreased to the second moving step length；The position being presently according to the mobile device and second movement
Step-length determines shift position；
Wherein, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot；(the n+
1) time slot is current time slots, and the nth slot is a upper time slot for the current time slots, and the n is positive integer；
Mobile unit 603, for being moved to the shift position from the position that the mobile device is presently in.
Optionally, the position control of mobile device as shown in FIG. 6 can also include:
Compare determination unit 604, for the size of the first eavesdropping capacity and the second eavesdropping capacity, by institute
It states the biggish eavesdropping capacity of numerical value in the first eavesdropping capacity and the second eavesdropping capacity and is determined as the communication system in (n+
1) the optimal eavesdropping capacity of time slot；
Storage unit 605, for the communication system in the optimal eavesdropping capacity of (n+1) time slot.
Optionally, the position control of mobile device as shown in FIG. 6 can also include:
Processing sends 606, for handling the useful signal and man made noise's signal, obtains processing letter
Number, and the processing signal is transmitted to the target end equipment.
As it can be seen that through the embodiment of the present invention, mobile device can be determined according to the information (such as SINR) that itself is received
The shift position of mobile device further optimizes the secrecy capacity of communication system, is continued for secure communication.
Wherein, implement the position control of mobile device described in Fig. 6, mobile device can be received according to itself
Information (such as SINR) determine the shift position of mobile device, further optimize the secrecy capacity of communication system, make safety
Carry out to communication lasts.
Referring to Fig. 7, the structure that Fig. 7 is the position control of another mobile device disclosed by the embodiments of the present invention is shown
It is intended to.Wherein, the position control of mobile device described in Fig. 7 can be used for executing adaptive described in Fig. 3 or Fig. 4
Step some or all of in the position control method of the mobile device of noise feedback specifically refers to the correlation in Fig. 3 or Fig. 4
Description, details are not described herein.Wherein, the target side that the position control of the mobile device runs on that communication system includes is set
It is standby.The position control of mobile device shown in Fig. 7 may include:
Determination unit 701, for determine the communication system (n+1) time slot the first secrecy capacity relative to described
First variation tendency of the communication system in the second secrecy capacity of nth slot, wherein second secrecy capacity is the communication
For system in the optimal secrecy capacity of nth slot, (n+1) time slot is current time slots, and the nth slot is described current
A upper time slot for time slot, the n are positive integer；
The determination unit 701 is also used to determine that the mobile device is opposite in the first eavesdropping capacity of (n+1) time slot
In the second variation tendency that the mobile device eavesdrops capacity the second of nth slot, wherein the second eavesdropping capacity is institute
Mobile device is stated in the optimal eavesdropping capacity of nth slot；
The determination unit 701 is also used to determine that the mobile device dry is made an uproar in the letter of same time received signal
Compare SINR, wherein the mobile device includes from the artificial of the target end equipment in same time received signal
Noise signal and useful signal from source equipment；
Adjustment unit 702, for adjusting according to first variation tendency, second variation tendency and the SINR
The whole target end equipment transmits the transimission power of man made noise's signal.
The adjustment unit 702 is adjusted according to first variation tendency, second variation tendency and the SINR
The whole target end equipment transmits the mode of the transimission power of man made noise's signal specifically:
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
The eavesdropping capacity boost for showing the mobile device, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is promoted, and the second variation tendency table
Show that the eavesdropping capacity of the mobile device is not promoted, determines
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
It indicates that the eavesdropping capacity of the mobile device does not decline, determines PD(n+1)=PD(n)；
If first variation tendency indicates that the secrecy capacity of the communication system is not promoted, and second variation tendency
The eavesdropping capacity decline for indicating the mobile device, determines
Wherein, the PDIt (n+1) is the biography of target end equipment man made noise's signal described in (n+1) slot transmission
Defeated power, the PD(n) transimission power of man made noise's signal is transmitted in nth slot for the target end equipment；It is described
γRIt (n+1) is SINR of the mobile device in (n+1) time slot received signal, the γRIt (n) is the mobile device
In the SINR of nth slot received signal.
Optionally, the position control of mobile device as shown in Figure 7 can also include:
Compare determination unit 703, for the size of first secrecy capacity and second secrecy capacity, by institute
It states the biggish secrecy capacity of numerical value in the first secrecy capacity and second secrecy capacity and is determined as the communication system in (n+
1) the optimal secrecy capacity of time slot；
The relatively determination unit 703 is also used to the first eavesdropping capacity described in comparison with described second and eavesdrops the big of capacity
It is small, the biggish eavesdropping capacity of numerical value in the first eavesdropping capacity and the second eavesdropping capacity is determined as the communication system
In the optimal eavesdropping capacity of (n+1) time slot；
Storage unit 704, for saving the communication system in the optimal secrecy capacity of (n+1) time slot and described logical
Letter system is in the optimal eavesdropping capacity of (n+1) time slot.
Optionally, the position control of mobile device as shown in Figure 7 can also include:
Transmission unit 705, for determining that system is opposite in first secrecy capacity of (n+1) time slot in the determination unit
Before first variation tendency of the system in the second best secrecy capacity of nth slot, Xiang Suoshu mobile device sends institute
State man made noise's signal；
Receiving unit 706, for receiving the processing signal of the mobile device forwarding, the processing signal is the movement
Man made noise's signal is carried out that treated by equipment with the useful signal received from the source equipment in the same time
Signal；
Acquiring unit 707, for obtaining the useful signal from the processing signal.
Wherein, implement the position control of mobile device described in Fig. 7, target end equipment can be according to communication system
The variation tendency (promoted or decline) of secrecy capacity, mobile device eavesdropping capacity variation tendency (promoted or decline) and
Mobile device is described artificial to adjust the target end equipment transmission in the Signal to Interference plus Noise Ratio SINR of same time received signal
The transimission power of noise signal further optimizes communication system to control the shift position of the mobile device more flexiblely
The secrecy capacity of system, is continued for secure communication.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed device, it can be by another way
It realizes.For example, the apparatus embodiments described above are merely exemplary, such as the division of the unit, it is only a kind of
Logical function partition, there may be another division manner in actual implementation, such as multiple units or components can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit,
It can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer-readable access to memory.Based on this understanding, technical solution of the present invention substantially or
Person says that all or part of the part that contributes to existing technology or the technical solution can body in the form of software products
Reveal and, which is stored in a memory, including some instructions are used so that a computer equipment
(can be personal computer, server or network equipment etc.) executes all or part of each embodiment the method for the present invention
Step.And memory above-mentioned includes: USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), mobile hard disk, magnetic or disk.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in a computer-readable memory, memory
May include: flash disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access device (English:
Random Access Memory, referred to as: RAM), disk or CD etc..
Above the position control method to a kind of mobile device of adaptive noise feedback disclosed by the embodiments of the present invention and
Device is described in detail, and used herein a specific example illustrates the principle and implementation of the invention, with
The explanation of upper embodiment is merely used to help understand method and its core concept of the invention；Meanwhile for the general of this field
Technical staff, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion
The contents of this specification are not to be construed as limiting the invention.
Claims (6)
1. a kind of position control method of the mobile device of adaptive noise feedback, the movement for including applied to communication system are set
Standby, the communication system further includes source equipment and target end equipment, which is characterized in that the described method includes:
The useful signal that the source equipment is sent and man made noise's letter that the target end equipment is sent are received in the same time
Number；
Determine the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；
Shift position is determined according to the SINR, and is moved to the mobile position from the position that the mobile device is presently in
It sets,
It is described to determine that shift position includes: according to the SINR
Determine that the mobile device eavesdrops capacity the first of the (n+1)th time slot according to the SINR, if the first eavesdropping capacity
Capacity is eavesdropped the second of nth slot greater than the mobile device, current moving step length is increased into first movement step-length, root
The position being presently according to the mobile device and the first movement step-length, determine shift position, if first eavesdropping
Capacity is less than or equal to the mobile device and eavesdrops capacity the second of nth slot, and current moving step length is decreased to second
Moving step length, the position being presently according to the mobile device and second moving step length, determine shift position,
In, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot, and (n+1)th time slot is current
Time slot, the nth slot are a upper time slot for the current time slots, and the n is positive integer.
2. the position control method of the mobile device of adaptive noise feedback according to claim 1, which is characterized in that institute
State method further include:
The size for comparing the first eavesdropping capacity and the second eavesdropping capacity, by the first eavesdropping capacity and described second
The biggish eavesdropping capacity of numerical value is determined as the communication system in the optimal eavesdropping capacity of the (n+1)th time slot in eavesdropping capacity；
The communication system is saved in the optimal eavesdropping capacity of the (n+1)th time slot.
3. special according to claim 1 to the position control method of the mobile device of 2 described in any item adaptive noise feedbacks
Sign is, the method also includes:
The useful signal and man made noise's signal are handled, obtain processing signal, and the processing signal is turned
Issue the target end equipment.
4. a kind of position control of mobile device runs on the mobile device that communication system includes, the communication system is also
Including source equipment and target end equipment characterized by comprising
Receiving unit, for receiving the useful signal that the source equipment is sent and target end equipment transmission in the same time
Man made noise's signal；
Determination unit, for determining the Signal to Interference plus Noise Ratio SINR of the mobile device received signal；
The determination unit is also used to determine shift position according to the SINR；
Mobile unit, for being moved to the shift position from the position that the mobile device is presently in,
The determination unit determines the mode of shift position according to the SINR specifically:
Determine that the mobile device eavesdrops capacity the first of the (n+1)th time slot according to the SINR, if the first eavesdropping capacity
Capacity is eavesdropped the second of nth slot greater than the mobile device, current moving step length is increased into first movement step-length, root
The position being presently according to the mobile device and the first movement step-length, determine shift position, if first eavesdropping
Capacity is less than or equal to the mobile device and eavesdrops capacity the second of nth slot, and current moving step length is decreased to second
Moving step length, the position being presently according to the mobile device and second moving step length, determine shift position,
In, the second eavesdropping capacity is the mobile device in the optimal eavesdropping capacity of nth slot, and (n+1)th time slot is current
Time slot, the nth slot are a upper time slot for the current time slots, and the n is positive integer.
5. the position control of mobile device according to claim 4, which is characterized in that the position of the mobile device
Control device further include:
Compare determination unit, for the size of the first eavesdropping capacity and the second eavesdropping capacity, by described first
Eavesdropping capacity and it is described second eavesdropping capacity in the biggish eavesdropping capacity of numerical value be determined as the communication system the (n+1)th time slot most
Good eavesdropping capacity；
Storage unit, for the communication system in the optimal eavesdropping capacity of the (n+1)th time slot.
6. according to the position control of the described in any item mobile devices of claim 4 to 5, which is characterized in that the movement
The position control of equipment further include:
Transmission unit is handled, for handling the useful signal and man made noise's signal, obtains and handles signal, and
The processing signal is transmitted to the target end equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710541677.XA CN107436601B (en) | 2017-07-05 | 2017-07-05 | The position control method and device of the mobile device of adaptive noise feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710541677.XA CN107436601B (en) | 2017-07-05 | 2017-07-05 | The position control method and device of the mobile device of adaptive noise feedback |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107436601A CN107436601A (en) | 2017-12-05 |
| CN107436601B true CN107436601B (en) | 2019-11-26 |
Family
ID=60459720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710541677.XA Active CN107436601B (en) | 2017-07-05 | 2017-07-05 | The position control method and device of the mobile device of adaptive noise feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107436601B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019006713A1 (en) * | 2017-07-05 | 2019-01-10 | 深圳大学 | Mobile device position control method and apparatus based on adaptive noise feedback |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102026273A (en) * | 2009-09-11 | 2011-04-20 | 索尼公司 | Mobile station device, base station device, and radio communication system |
| CN105491637A (en) * | 2015-12-08 | 2016-04-13 | 深圳大学 | Method and system for searching for optimum relay position of mobile relay based on fixed step size |
| CN105554843A (en) * | 2015-12-08 | 2016-05-04 | 深圳大学 | Best relay position search method and best relay position search system based on continuous negative feedback variable step length |
| CN105554840A (en) * | 2015-12-08 | 2016-05-04 | 深圳大学 | Optimum relay position searching method and system based on reverse compensation mechanism |
| CN105553537A (en) * | 2015-12-08 | 2016-05-04 | 深圳大学 | Optimum relay position searching method and system based on accumulated positive feedback variable steps |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870393A (en) * | 1995-01-20 | 1999-02-09 | Hitachi, Ltd. | Spread spectrum communication system and transmission power control method therefor |
-
2017
- 2017-07-05 CN CN201710541677.XA patent/CN107436601B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102026273A (en) * | 2009-09-11 | 2011-04-20 | 索尼公司 | Mobile station device, base station device, and radio communication system |
| CN105491637A (en) * | 2015-12-08 | 2016-04-13 | 深圳大学 | Method and system for searching for optimum relay position of mobile relay based on fixed step size |
| CN105554843A (en) * | 2015-12-08 | 2016-05-04 | 深圳大学 | Best relay position search method and best relay position search system based on continuous negative feedback variable step length |
| CN105554840A (en) * | 2015-12-08 | 2016-05-04 | 深圳大学 | Optimum relay position searching method and system based on reverse compensation mechanism |
| CN105553537A (en) * | 2015-12-08 | 2016-05-04 | 深圳大学 | Optimum relay position searching method and system based on accumulated positive feedback variable steps |
Non-Patent Citations (2)
| Title |
|---|
| Multi-armed Bandit Formulation for Autonomous Mobile Acoustic Relay Adaptive Positioning;Mei Yi Cheung,等;《2013 IEEE International Conference on Robotics and Automation (ICRA)》;20130510;4165-4170页 * |
| 协作分集中的移动中继研究;刘伟伟,等;《厦门大学学报( 自然科学版)》;20101130;第49卷(第6期);803-805页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107436601A (en) | 2017-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107360544B (en) | The position of mobile equipment control method and device of dynamic noise based on Signal to Interference plus Noise Ratio | |
| Goyal et al. | Full duplex cellular systems: will doubling interference prevent doubling capacity? | |
| US20220408277A1 (en) | Information reporting method, access manner determining method, terminal, and network device | |
| JP2020526158A (en) | System, method and device for utilizing wires of a sound producing device as an antenna for receiving power delivered wirelessly | |
| Awan et al. | Detection for 5G-NOMA: An online adaptive machine learning approach | |
| CN107135539B (en) | energy efficiency optimization method for full-duplex bidirectional relay system | |
| CN107437963B (en) | Distributed safe beam forming method and device based on feedback control | |
| CN107396307B (en) | Mobile equipment position control method and device based on dynamic noise of channel information | |
| Sun et al. | Non-orthogonal multiple access in a mmWave based IoT wireless system with SWIPT | |
| CN110753354A (en) | Unmanned aerial vehicle cooperation satellite-ground combined NOMA communication system based position deployment method | |
| CN107277839A (en) | Interference guidance method and cellular communication system based on spatial domain and power adaptive | |
| CN107436601B (en) | The position control method and device of the mobile device of adaptive noise feedback | |
| Patil et al. | A node discovery protocol for ad hoc underwater acoustic networks | |
| Hu et al. | Analysis of wireless energy harvesting relay throughput in Rician channel | |
| CN107436602B (en) | Position control method and device of mobile equipment based on single-bit feedback | |
| CN107395260B (en) | Distributed safe beam forming method and device based on artificial noise | |
| WO2019095247A1 (en) | Unmanned aerial vehicle, and power control method thereof | |
| CN110753310B (en) | Unmanned aerial vehicle position optimization method and device for multi-user emergency communication network | |
| JP7416085B2 (en) | Wireless communication device and selection method | |
| WO2019006693A1 (en) | Mobile device position control method and apparatus based on dynamic noise of channel information | |
| WO2019006713A1 (en) | Mobile device position control method and apparatus based on adaptive noise feedback | |
| WO2019006711A1 (en) | Mobile device position control method and apparatus based on dynamic noise with signal to interference plus noise ratio | |
| WO2019006712A1 (en) | Mobile device position control method and apparatus based on single bit feedback | |
| Yin et al. | Uplink performance analysis of base station antenna heights in dense cellular networks | |
| Hu et al. | Energy harvesting relaying using non‐ideal relaying node in Rician fading channels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |