CN105898760A - Biological-friendly cognitive underwater acoustic network communication method by efficiently utilizing spectrum resources - Google Patents
Biological-friendly cognitive underwater acoustic network communication method by efficiently utilizing spectrum resources Download PDFInfo
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- CN105898760A CN105898760A CN201610408745.0A CN201610408745A CN105898760A CN 105898760 A CN105898760 A CN 105898760A CN 201610408745 A CN201610408745 A CN 201610408745A CN 105898760 A CN105898760 A CN 105898760A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
Abstract
The invention relates to a biological-friendly cognitive underwater acoustic network communication method by efficiently utilizing spectrum resources. The biological-friendly cognitive underwater acoustic network communication method comprises the following steps that: a primary user in UCANs is a marine mammal; a sensor node is a secondary user; a frequency band occupied by sound production of the marine mammal is used as an authorized frequency band; the authorized frequency band is divided into two parts; for the frequency band having high use frequency, the marine mammal has the prior use right; after receiving communication agreement information of a cognitive centre, a cognitive user performs spectrum sensing of a channel; the sending power is necessary to be lower than a hearing threshold of the marine mammal; the cognitive user performs communication according to distribution information of the cognitive centre; and spectrum sensing is still necessary to carry out in a communication process. According to the biological-friendly cognitive underwater acoustic network communication method disclosed by the invention, interference of communication of the sensor node to communication between marine mammals can be avoided; simultaneously, underwater spectrum resources are reasonably utilized and distributed; and high-efficiency utilization of the spectrum resources is realized based on a cognitive technology.
Description
Technical field
The present invention relates to cognitive acoustic communication technical field under water, be concretely a kind of biological friendly efficiently to utilize frequency spectrum resource
Cognitive underwater acoustic network communication means.
Background technology
Sensor node in water sound sensor network (Underwater Acoustic Sensor Networks, UASNs)
Coexist in underwater environment with marine mammal and all use acoustic communication, but, current most research is mainly had in mind
In single network scenario, the less consideration UASNs communication impact on marine mammal orthobiosis.Along with the underwater sound senses
The extensive application of device network technology, the impact that marine mammal is caused by artificial acoustical signal is also being gradually increased, in order to subtract
Few impact on them, it is achieved biological friendly underwater acoustic network communication, the design of UASNs is faced with formidable challenges.
Network environment intermediate frequency spectrum scarcity of resources under water, and rare frequency spectrum resource is not fully utilized.Use for reference land
The method that ground radio improves the availability of frequency spectrum, introduces cognitive techniques in subsurface communication environment.Cognitive radio technology exists
The most widely, it with perception surrounding, and can adjust work in real time according to testing result in application in the communication of land
Parameter.Therefore, based on conventional land wireless cognition network, it is proposed that cognitive acoustic mesh network (Underwater under water
Cognitive Acoustic Networks, UCANs) concept, by perception UASNs surrounding in UCANs, and adjust
Whole communication channel, transmit power or other operation operational factors, reached reasonable distribution frequency spectrum resource under water, improved frequency
The purpose of spectrum utilization rate.In UASNs, sensor node can select unappropriated frequency range to communicate, and improves water
The availability of frequency spectrum of sound communication, the problem to some extent solving underwater sound communication narrow bandwidth.UCANs includes two passes
Key technology, is that power controls and channel distributes respectively.Solving UASNs marine mammal and recognizing that sensor node coexists
Knowing in underwater acoustic network communication process, power control techniques serves critical effect, when controlling cognitive user transmission data
The size of transmit power, it is to avoid while interfering marine mammal communication, reaches the mesh that band efficiency improves
's.
Summary of the invention
The impact caused marine mammal in order to avoid sensor node, solves the problem that the availability of frequency spectrum is low simultaneously,
The present invention proposes a kind of biological friendly cognitive underwater acoustic network communication means efficiently utilizing frequency spectrum resource.In the method,
Application aware underwater acoustic technology, using marine mammal as primary user, sensor node is as secondary user's, i.e. cognition is used
Family.Using centralized communication mode, by frequency spectrum perception, channel occupancy information is sent to cognitive center by cognitive user,
It is cognitive user distribution transmit power and transmission channel that cognition combines power control algorithm centrally through channel allocation algorithm.Real
The efficient utilization of existing frequency spectrum resource.Technical solution of the present invention is as follows:
A kind of biological friendly cognitive underwater acoustic network communication means efficiently utilizing frequency spectrum resource, comprises the following steps:
Step one: the primary user in UCANs is marine mammal, sensor node is secondary user's, moves with ocean suckling
Mandate frequency range, for authorizing frequency range, is divided into two parts by the frequency range that the sounding of thing takies, for using the frequency range ocean that frequency is high
Mammal has preferential right, and sensor node can not be simultaneously at this band communication with marine mammal；For authorizing
Other frequency ranges in frequency range, sensor node is as secondary user's, by power control realization primary user and secondary user's
Frequency spectrum share；When sensor node has data to need to send, first send communication request, cognitive center to cognitive center
After receiving the request, need to whether cognitive user feedback agrees to signal of communication；
Step 2: after cognitive user receives the agreement communication information at cognitive center, channel is carried out frequency spectrum perception, perception
Each sub-channels state in which, the most busy or idle, and the transmit power transmission letter of each primary user and cognitive user
Road information, and frequency spectrum perception result is sent to cognitive center.
Step 3: it is cognitive user distribution transmit power and transmission channel that cognitive center needs according to sensing results, cognitive joint
The transmit power of point needs less than the Hearing Threshold P to marine mammalth:
Wherein, k is path loss coefficient, and the geometry that reflection signal is propagated: k=1 propagates for cylinder, k=2 is used for ball
Shape is propagated, and d is the distance of the nearest marine mammal of cognitive user that distance is currently accessed and present cognitive user, fnIt is n-th
The mid frequency of individual channel, δ is the behavioral implications threshold value of marine mammal, and unit is dB μ Pa, and Hearing Threshold is a merit
The rate upper limit, when the acoustical signal power that marine mammal perceives is less than this value, will not take the post as this acoustical signal
What reaction；The transmit power of cognitive user is sent to cognitive user with sending channel allocation result simultaneously.
Step 4: cognitive user communicates according to the distribution information at cognitive center, need nonetheless remain for carrying out frequency spectrum in communication process
Perception, monitors primary user's service condition to channel about, if needing to change channel, then needs again to send to cognitive center
Request, the power distribution carrying out a new round distributes with channel.
Cognitive techniques is combined by the present invention with underwater sound communication, uses centralized subsurface communication strategy.Marine mammal is made
For primary user, sensor node is as secondary user's, and the frequency range that therefore marine mammal sounding takies is for authorizing frequency range, the party
The core of method is for authorizing the band segment in frequency range, and marine mammal has preferential right, sensor node to feed with ocean
Breast animal can not be simultaneously at this band communication.For authorizing other frequency ranges in frequency range, sensor node, can as secondary user's
Frequency spectrum share by power control realization primary user Yu secondary user's.In UASNs, the method is it can be avoided that sensor node
Communicate to the interference of communication between marine mammal, simultaneously Appropriate application with distribute frequency spectrum resource under water, based on cognitive techniques, real
The efficient utilization of existing frequency spectrum resource.
Accompanying drawing explanation
Fig. 1 is the cognitive underwater acoustic network communication flow diagram that biology of the present invention is friendly
Detailed description of the invention
The impact caused marine mammal in order to avoid sensor node, solves the problem that the availability of frequency spectrum is low simultaneously,
The present invention proposes a kind of biological friendly cognitive underwater acoustic network communication means efficiently utilizing frequency spectrum resource.In the method,
Application aware underwater acoustic technology, using marine mammal as primary user, sensor node is as secondary user's, i.e. cognition is used
Family.Using centralized communication mode, by frequency spectrum perception, channel occupancy information is sent to cognitive center by cognitive user,
It is cognitive user distribution transmit power and transmission channel that cognition combines power control algorithm centrally through channel allocation algorithm.Real
The efficient utilization of existing frequency spectrum resource.Concrete implementation step of the present invention is:
Step one: the primary user in UCANs is marine mammal, sensor node is secondary user's, moves with ocean suckling
Mandate frequency range, for authorizing frequency range, for the efficient utilization of frequency spectrum resource, is divided into two parts by the frequency range that the sounding of thing takies,
For using the frequency range marine mammal that frequency is high to have preferential right, sensor node can not be same with marine mammal
Time at this band communication.For authorizing other frequency ranges in frequency range, sensor node, as secondary user's, can pass through power
Control realization primary user and the frequency spectrum share of secondary user's.When sensor node has data to need to send, first to cognition
Center sends communication request, and cognitive center after receiving the request, needs to whether cognitive user feedback agrees to signal of communication.
Step 2: if cognitive user receives the agreement communication information receiving cognitive center, then channel is carried out frequency spectrum sense
Know, perception each sub-channels state in which, the most busy or idle, and the transmission merit of each primary user and cognitive user
Rate sends the information such as channel, and frequency spectrum perception result is sent to cognitive center.
Step 3: it is cognitive user distribution transmit power and transmission channel that cognitive center needs according to sensing results.In order to keep away
Exempting from the interference to marine mammal, the transmit power of cognitive nodes needs less than the Hearing Threshold P to marine mammalth。
Threshold calculations formula is:
Wherein, k is path loss coefficient, reflects the geometry that signal is propagated: k=1 and propagates for cylinder, and k=2 is used for
Spherical propagation, selects k=2 here.D is that the nearest marine mammal of cognitive user that distance is currently accessed is used with present cognitive
The distance at family, fnBeing the mid frequency of the n-th channel, δ is the behavioral implications threshold value of marine mammal, and unit is dB μ Pa,
Hearing Threshold is a power upper limit, and when the acoustical signal power that marine mammal perceives is less than this value, it will not be right
This acoustical signal makes any reaction, but, if the acoustical signal power perceived moves higher than Hearing Threshold, ocean suckling
The health of thing or behavior will be affected by certain.
The transmit power of cognitive user is sent to cognitive user with sending channel allocation result simultaneously.
Step 4: cognitive user communicates according to the distribution information at cognitive center, need nonetheless remain for carrying out frequency spectrum in communication process
Perception, monitors primary user's service condition to channel about, if needing to change channel, then needs again to send to cognitive center
Request, the power distribution carrying out a new round distributes with channel.
In Fig. 1, illustrate biological friendly cognitive underwater acoustic network communication flow diagram.Firstly the need of to sea specific in underwater environment
Ocean mammal, i.e. primary user, carry out frequency range division, for using the frequency range marine mammal that frequency is high to have preferential use
Power, sensor node can not be simultaneously at this band communication with marine mammal.For authorizing other frequency ranges in frequency range,
Sensor node, can be by the frequency spectrum share of power control realization primary user with secondary user's as secondary user's.Work as sensing
Device node, i.e. cognitive user, when having packet to send request, need to send request of data, cognitive center to cognitive center
After receiving the communication request of cognitive user, need to whether cognitive user feedback agrees to signal of communication.If cognitive user is received
To the agreement communication information at cognitive center, then channel is carried out frequency spectrum perception, obtain the use status information of each sub-channels
And the information such as each primary user and cognitive user transmit power, and the result of frequency spectrum perception is sent to cognitive center.Cognitive
Central collection, to after the perception information of secondary user's, needs transmit power and the channel distribution of decision-making cognitive user, and should
Information is sent to secondary user's.Secondary user's communicates, according to the distribution information at cognitive center in communication process still
Needing to carry out frequency spectrum perception, monitor primary user's service condition to channel about, if needing to change channel, then needing again
Secondary sending request to cognitive center, the power distribution carrying out a new round distributes with channel.
Claims (1)
1. the biological friendly cognitive underwater acoustic network communication means efficiently utilizing frequency spectrum resource, comprises the following steps:
Step one: the primary user in UCANs is marine mammal, sensor node is secondary user's, accounts for the sounding of marine mammal
Frequency range be to authorize frequency range, mandates frequency range is divided into two parts, has preferential right for the use high frequency range marine mammal of frequency,
Sensor node can not be simultaneously at this band communication with marine mammal；For authorizing other frequency ranges in frequency range, sensor node conduct
Secondary user's, by the frequency spectrum share of power control realization primary user Yu secondary user's；When sensor node has data to need to send, first
First send communication request to cognitive center, cognitive center after receiving the request, needs to whether cognitive user feedback agrees to signal of communication；
Step 2: after cognitive user receives the agreement communication information at cognitive center, channel is carried out frequency spectrum perception, each sub-channels of perception
State in which, the most busy or idle, and the transmit power transmission channel information of each primary user and cognitive user, and by frequency spectrum perception
Result is sent to cognitive center.
Step 3: it is cognitive user distribution transmit power and transmission channel, the transmission merit of cognitive nodes that cognitive center needs according to sensing results
Rate needs less than the Hearing Threshold P to marine mammalth:
Wherein, k is path loss coefficient, and the geometry that reflection signal is propagated: k=1 propagates for cylinder, k=2 is used for spherical propagation, and d is
The distance of the nearest marine mammal of cognitive user that distance is currently accessed and present cognitive user, fnBeing the mid frequency of the n-th channel, δ is
The behavioral implications threshold value of marine mammal, unit is dB μ Pa, and Hearing Threshold is a power upper limit, when the sound that marine mammal perceives
When signal power is less than this value, this acoustical signal will not be made any reaction；The transmit power of cognitive user is distributed with sending channel simultaneously
Result is sent to cognitive user.
Step 4: cognitive user communicates according to the distribution information at cognitive center, need nonetheless remain for carrying out frequency spectrum perception, monitor it in communication process
Primary user's service condition to channel around, if needing to change channel, then needs again to send request to cognitive center, and the power carrying out a new round divides
Join and distribute with channel.
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Cited By (3)
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| CN106533592A (en) * | 2016-11-25 | 2017-03-22 | 河海大学常州校区 | Multi-service data communication method and communication system for underwater acoustic network |
| CN106658525A (en) * | 2016-10-31 | 2017-05-10 | 天津大学 | Directional environment-friendly spectrum decision-making method |
| US10904050B1 (en) | 2019-07-12 | 2021-01-26 | The Mitre Corporation | Data processing for automatic modulation classification of wireless signals |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658525A (en) * | 2016-10-31 | 2017-05-10 | 天津大学 | Directional environment-friendly spectrum decision-making method |
| CN106533592A (en) * | 2016-11-25 | 2017-03-22 | 河海大学常州校区 | Multi-service data communication method and communication system for underwater acoustic network |
| CN106533592B (en) * | 2016-11-25 | 2019-11-22 | 河海大学常州校区 | A kind of multi-service data communication means and communication system for underwater acoustic network |
| US10904050B1 (en) | 2019-07-12 | 2021-01-26 | The Mitre Corporation | Data processing for automatic modulation classification of wireless signals |
| US11870618B2 (en) | 2019-07-12 | 2024-01-09 | The Mitre Corporation | Data processing for automatic modulation classification of wireless signals |
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Application publication date: 20160824 |
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