CN106412923B - Method for collision avoidance and cognitive database system based on distributed cognition database - Google Patents
Method for collision avoidance and cognitive database system based on distributed cognition database Download PDFInfo
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- CN106412923B CN106412923B CN201510461200.1A CN201510461200A CN106412923B CN 106412923 B CN106412923 B CN 106412923B CN 201510461200 A CN201510461200 A CN 201510461200A CN 106412923 B CN106412923 B CN 106412923B
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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
Abstract
The present invention provides a kind of method for collision avoidance and cognitive database based on distributed cognition database, occupancy situation of first website to the first shared resource, is revised as in application by the first request message for first the first shared resource of website application that system where receiving the first website the method includes the first cognitive database is sent according to the first request message；First cognitive database obtains all neighbors of the first website；Neighbors is judged whether all in the compass of competency of the first cognitive database, if it is not, then obtaining the neighbors not in the first cognitive database compass of competency to the occupancy situation of the first shared resource；According to the neighbors not in the neighbors in the first cognitive database compass of competency to the occupancy situation of the first shared resource and in the first cognitive database compass of competency to the occupancy situation of the first shared resource, it is determined whether the first shared resource is distributed to the first website.The present invention can be avoided same shared resource while distribute to adjacent website.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of method for collision avoidance based on distributed cognition database
And cognitive database.
Background technique
As growing and wireless communication system the type of radio communication service bandwidth demand is increasing, have
The radio spectrum resources of limit become more nervous.It is in short supply with wireless communication system demand for communication system frequency spectrum resource is effectively relieved
Contradiction between growing, proposes spectrum-sharing techniques, to improve the availability of frequency spectrum.Spectrum-sharing techniques scheme master at present
It to include two kinds, one is the frequency spectrum share scheme based on authorization frequency spectrum access, cognitive system can not influence authorized user's
In the case of access this authorization frequency spectrum, realize the frequency spectrum share between authorized user and cognitive system；Another kind is between each cognitive system
Primary and secondary is not distinguished, idle frequency spectrum resource is shared by way of fair competition, is realized between cognitive system and cognitive system
Frequency spectrum share.
For the frequency spectrum share mode of fair competition between each cognitive system, cognitive system can be according to business demand, to cognition
Database sends frequency spectrum resource demand, by cognitive database according to the website of current frequency spectrum resource service condition, cognitive system
The factors such as distribution are distributed corresponding frequency spectrum resource and are used to cognitive system.In actual deployment, cognitive database can be using collection
Chinese style mode is disposed, and by the way of classification, each junior's cognitive database is only responsible for the perception system in its compass of competency
The shared frequency point allocation of system, and the frequency point allocation data of variation are pushed up to higher level's cognitive database, higher level recognizes data
The data that library storage junior's database reports, if junior's cognitive database, when carrying out frequency point allocation processing, discovery needs adjacent
In other sensory perceptual systems of cognitive database at the same level when the frequency point allocation information of website, need the inquiry of superior cognitive database right
Shared resource application is handled；Cognitive database can also be disposed using distributed way, that is, pass through adjacent cognition number
Data are used according to the frequency point that the interaction between library directly acquires adjacent area cognitive database.
Compared to centralized deployment, distributed deployment is more flexible, be more suitable for the tissue with geographical distribution characteristic or
Mechanism uses, and allows to be distributed in different zones, each department of different stage carries out Partial controll to its own data, has
Better practicability.
It is the frequency spectrum share framework based on distributed cognition database shown in Fig. 1.The shared frequency spectrum of each sensory perceptual system provides
Source demand is reported to location resource allocation center, sends and shares to cognitive database after being uniformly processed from location resource allocation center
Frequency spectrum resource application is requested, and the site identity, shared resource position and application comprising request shared resource in request occupy duration.
The shared frequency spectrum of other websites of the cognitive database into adjacent cognitive database request safe distance distributes feelings
Condition, and the frequency point allocation situation of itself storage is combined, interference analysis is carried out to make decisions to share spectrum resources application, and will
Result notice location resource allocation center.
When two sensory perceptual systems within the scope of adjacent cognitive database in synchronization to the cognitive database Shen belonged to
Please same perceived resource, at this point, the information that obtains from adjacent cognitive database of ownership cognitive database is all that frequency point is vacant, then
Two cognitive databases are possible to that same share spectrum resources can be licensed to two sensory perceptual systems uses, if two sensory perceptual systems
Within the isolation distance of other side, it is likely that will cause interference, so that business transmission can not be carried out or lead to service disconnection.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of method for collision avoidance based on distributed cognition database
And cognitive database, it can be avoided same shared resource while distributing to adjacent website, reduce service disconnection probability.
In order to solve the above technical problems, the present invention the following technical schemes are provided:
In a first aspect, the present invention provides a kind of method for collision avoidance based on distributed cognition database, comprising:
What system where the first cognitive database receives the first website was sent is used for first the first shared resource of website application
The first request message,
And occupancy situation of first website to first shared resource is revised as according to first request message
In application；Wherein, website has occupied the occupancy situation of first shared resource including not applying, applying to neutralize；
First cognitive database obtains all neighbors of first website, and the neighbors of first website is
With the website for being less than or equal to preset threshold at a distance from the first website；
The neighbors of first website is judged whether all in the compass of competency of the first cognitive database, if it is not, then obtaining
Take the neighbors not in the first cognitive database compass of competency to the occupancy situation of first shared resource；
According to the neighbors not in the first cognitive database compass of competency to the occupancy situation of first shared resource,
And the neighbors in the first cognitive database compass of competency is to the occupancy situation of first shared resource, it is determined whether can
The first shared resource is distributed to the first website.
Further, the neighbors in the first cognitive database compass of competency does not share money to described first for the acquisition
The occupancy situation in source includes:
The not cognitive database belonging to the neighbors in the first cognitive database compass of competency is obtained, to the cognition number
It sends according to library for obtaining the neighbors to the second request message of the occupancy situation of first shared resource, and reception
The cognitive database accounts for first shared resource comprising the neighbors according to what second request message was sent
With the second response message of situation.
Further, the method also includes:
After the first shared resource can be distributed to the first website by the first cognitive database determination, by the first website
The occupancy situation of first shared resource is revised as having occupied；
Or,
After the first shared resource cannot be distributed to the first website by the first cognitive database determination, by first stop
Point is revised as not applying to the occupancy situation of first shared resource.
Further, according to the neighbors not in the first cognitive database compass of competency to first shared resource
Occupancy situation, and neighbors in the first cognitive database compass of competency is to the occupancy situation of first shared resource,
Determine whether the first shared resource distributing to the first website include:
If the neighbors in the first cognitive database compass of competency is not to the occupancy situation of first shared resource
Do not apply, then the first cognitive database determines the neighbors vacant described first not in the first cognitive database compass of competency
Shared resource；
If the neighbors in the first cognitive database compass of competency is not to the occupancy situation of first shared resource
It has been occupied that, then the first cognitive database determines that the neighbors not in the first cognitive database compass of competency has occupied described first
Shared resource；
If the neighbors in the first cognitive database compass of competency is not to the occupancy situation of first shared resource
In application, then:
When obtaining the not application of the first shared resource described in the neighbors application in the first cognitive database compass of competency
Between；
Judge the first shared resource described in the first website application application time whether it is described not first recognize data
Before the application time of first shared resource described in neighbors application in the compass of competency of library, if so, the first cognitive database
Determine vacant first shared resource of neighbors not in the first cognitive database compass of competency；
Otherwise it is described to determine that the neighbors not in the first cognitive database compass of competency has occupied for the first cognitive database
First shared resource；
It is described whether the first cognitive database has occupied according to the neighbors not in the first cognitive database compass of competency
First shared resource, and neighbors in the first cognitive database compass of competency is to the occupancy feelings of first shared resource
Condition determines whether the first shared resource distributing to the first website using preset interference parser；
Wherein, the application time of the first shared resource described in the first website application is that the first cognitive database receives first
The time of request message；The not application of the first shared resource described in the neighbors application in the first cognitive database compass of competency
Time is that the cognitive database belonging to the neighbors in the first cognitive database compass of competency does not receive the neighbors
For applying for the time of the request message of the first shared resource.
Further, not the first shared resource described in the neighbors application in the first cognitive database compass of competency is obtained
Application time include:
First cognitive database is to the not cognitive database belonging to the neighbors in the first cognitive database compass of competency
The third request message for obtaining the application time of the first shared resource described in the neighbors application is sent, and receives institute
State the Shen comprising the first shared resource described in the neighbors application that cognitive database is sent according to the third request message
Please the time third response message.
Further, the method also includes:
After the first shared resource can be distributed to the first website by the first cognitive database determination, the first cognition number
Successful first response message of the first shared resource application is sent to system where the first website according to library；
Or,
After the first shared resource cannot be distributed to the first website by the first cognitive database determination, the first cognition
Database sends the first response message of the first shared resource application failure to system where the first website.
Further, the method also includes:
After the first shared resource can be distributed to the first website by the first cognitive database determination, the first cognition number
The duration for occupying the first shared resource according to the first site requests carried in the first request message according to library determines that described first is total
The initial time and terminate the time that resource is occupied by first website are enjoyed, and the initial time and termination time are sent to
First website.
Second aspect, the present invention also provides a kind of cognitive databases, comprising:
Receiving unit, for receiving that system where the first website sends for first the first shared resource of website application
First request message；
Unit is modified, for being total to the first website to described first according to received first request message of the receiving unit
The occupancy situation for enjoying resource is revised as in application；Wherein, website to the occupancy situation of first shared resource include do not apply,
Application is neutralized and has been occupied；
Acquiring unit, for obtaining all neighbors of first website, the neighbors of first website is and the
The distance of one website is less than or equal to the website of preset threshold；
Judging unit, for judging the neighbors of first website whether all in the compass of competency of itself cognitive database
It is interior；
The acquiring unit is also used to determine that the neighbors of first website all itself is not being recognized in the judging unit
When in the compass of competency in primary data library, it is shared to described first to obtain the not neighbors in itself cognitive database compass of competency
The occupancy situation of resource；
Determination unit, for sharing money to described first according to the not neighbors in itself cognitive database compass of competency
The occupancy situation in source, and neighbors in itself cognitive database compass of competency is to the occupancy feelings of first shared resource
Condition, it is determined whether the first shared resource can be distributed into the first website.
Further, described to repair after the first shared resource can be distributed to the first website by the determination unit determination
Change unit, is also used to be revised as having occupied by occupancy situation of first website to first shared resource；
Or,
After the first shared resource cannot be distributed to the first website by the determination unit determination, the modification unit,
It is also used to be revised as not applying by occupancy situation of first website to first shared resource.
Further, the determination unit includes judgment module, obtains module, the first determining module and the second determining mould
Block；
The judgment module, for judging that the neighbors not in itself cognitive database compass of competency is total to described first
Enjoy resource occupancy situation be do not apply, apply in still occupied；
First determining module, it is described not in itself cognitive database compass of competency for being determined in the judgment module
Interior neighbors is to determine when not applying and do not administer model in the first cognitive database to the occupancy situation of first shared resource
Enclose interior vacant first shared resource of neighbors；
First determining module is also used to determine in the judgment module described not in itself cognitive database administration model
Neighbors in enclosing is to determine and do not administer in the first cognitive database when having occupied to the occupancy situation of first shared resource
Neighbors in range has occupied first shared resource；
The acquisition module, it is described not in itself cognitive database compass of competency for being determined in the judgment module
Neighbors obtains not in itself cognitive database compass of competency to when the occupancy situation of first shared resource is in application
Neighbors application described in the first shared resource application time；
Whether the judgment module is also used to judge the application time of the first shared resource described in the first website application in institute
Before stating the not application time of the first shared resource described in the neighbors application in itself cognitive database compass of competency；
First determining module is also used to determine the first shared resource described in the first website application in the judgment module
Application time in the Shen of not first shared resource described in the neighbors application in itself cognitive database compass of competency
When please be before the time, vacant first shared resource of neighbors not in the first cognitive database compass of competency be determined；
First determining module is also used to determine the first shared resource described in the first website application in the judgment module
Application time not in not first shared resource described in the neighbors application in itself cognitive database compass of competency
When before the application time, determine that the neighbors not in the first cognitive database compass of competency has occupied the described first shared money
Source；
Wherein, the application time of the first shared resource described in the first website application is that itself cognitive database receives first
The time of request message；The not application of the first shared resource described in the neighbors application in itself cognitive database compass of competency
Time is that the cognitive database belonging to the neighbors in itself cognitive database compass of competency does not receive the neighbors
For applying for the time of the request message of the first shared resource；
Second determining module is not administered in the first cognitive database for what is determined according to first determining module
Whether the neighbors in range has occupied first shared resource, and the neighboring station in the first cognitive database compass of competency
Point determines whether the first shared money the occupancy situation of first shared resource using preset interference parser
Distribute to the first website in source.
As shown from the above technical solution, the method for collision avoidance of the present invention based on distributed cognition database,
When adjacent cognitive database receives the shared frequency point resource bid of website in range simultaneously, adjacent cognition data can be obtained in time
The application situation and frequency point occupancy to the shared frequency point resource in library is avoided same shared frequency point resource while being distributed
To adjacent website, service disconnection probability is reduced, improves cognitive system to the service satisfaction of spectra sharing system.And this
The invention scheme is smaller to the change of existing mechanism, has very strong feasibility.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the frequency spectrum share configuration diagram based on distributed cognition database；
Fig. 2 is the flow chart for the method for collision avoidance based on distributed cognition database that the embodiment of the present invention one provides；
Fig. 3 is illustrating to adjacent cognitive database shared resource occupancy situation analytic process for the offer of the embodiment of the present invention one
Figure；
Fig. 4 is the structural schematic diagram of cognitive database provided by Embodiment 2 of the present invention；
Fig. 5 is the structural schematic diagram for the cognitive database that the embodiment of the present invention three provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Website is the website in the sensory perceptual system in the Distributed Cognitive Systems in the following content of the present invention.
The embodiment of the present invention one provides a kind of method for collision avoidance based on distributed cognition database, Fig. 2 shows
The flow chart for the method for collision avoidance based on distributed cognition database that the embodiment of the present invention one provides, referring to fig. 2, this method
Include the following steps:
Step 101: what system where the first cognitive database receives the first website was sent is used for the first website application first
First request message of shared resource, and according to first request message by the first website to first shared resource
Occupancy situation is revised as in application.
In this step, website is the base station under sensory perceptual system, has multiple websites under each sensory perceptual system, each website is asked
It asks message to be first sent to the location resource allocation center of sensory perceptual system, cognition data is sent to by location resource allocation centre punch one
Library.Wherein, website has occupied the occupancy situation of first shared resource including not applying, applying to neutralize；
Step 102: the first cognitive database obtains all neighbors of first website, the neighboring station of first website
Point is the website at a distance from the first website less than or equal to preset threshold.
Step 103: whether the first cognitive database judges the neighbors of first website all in the first cognitive database
Compass of competency in, if it is not, execute step 103b.
The 103b: the first cognitive database of step obtain not the neighbors in the first cognitive database compass of competency to described
The occupancy situation of first shared resource.
In this step, it can be obtained not in the first cognitive database compass of competency by following tri- step of S1, S2, S3
Occupancy situation of the neighbors to first shared resource:
S1. the not cognitive database belonging to the neighbors in the first cognitive database compass of competency is obtained；
S2. it sends to the cognitive database for obtaining the neighbors to the occupancy situation of first shared resource
The second request message；
S3. receive the cognitive database according to second request message send comprising the neighbors to described the
Second response message of the occupancy situation of one shared resource.
Step 104: the first cognitive database is according to the neighbors not in the first cognitive database compass of competency to described
It is described to determine whether the neighbors not in the first cognitive database compass of competency has occupied for the occupancy situation of first shared resource
First shared resource.
In this step, three kinds of situations (A, B, C) is divided to determine the not neighbors in the first cognitive database compass of competency
Whether first shared resource has been occupied:
If A. not occupancy situation of the neighbors in the first cognitive database compass of competency to first shared resource
Not apply, then the first cognitive database determines neighbors not in the first cognitive database compass of competency vacant described the
One shared resource；
If B. not occupancy situation of the neighbors in the first cognitive database compass of competency to first shared resource
To have occupied, then the first cognitive database determines that neighbors not in the first cognitive database compass of competency has occupied described the
One shared resource；
If C. not occupancy situation of the neighbors in the first cognitive database compass of competency to first shared resource
In application, then successively to execute step C-1 and C-2:
Step C-1: not the first shared resource described in the neighbors application in the first cognitive database compass of competency is obtained
Application time.
In this step, the not neighboring station in the first cognitive database compass of competency can be obtained by following S1 ', S2 '
Point applies for the application time of first shared resource:
The first cognitive database of S1 ' is to the not cognition number belonging to the neighbors in the first cognitive database compass of competency
The third request message for obtaining the application time of the first shared resource described in the neighbors application is sent according to library.
S2 ' receive the cognitive database according to the third request message send comprising the neighbors application institute
State the third response message of the application time of the first shared resource.
Wherein, third request message described in the present embodiment and second request message can be merged into a request and disappear
Breath, i.e. the first cognitive database request frequency point to occupy when to other cognitive database request messages directly in a piece of news
Situation and application time.
Step C-2: judge the first shared resource described in the first website application application time whether described not first
Before the application time of first shared resource described in neighbors application in cognitive database compass of competency, if so, first recognizes
Primary data library determines vacant first shared resource of neighbors not in the first cognitive database compass of competency；Otherwise,
First cognitive database determines that the neighbors not in the first cognitive database compass of competency has occupied first shared resource；
Wherein, the application time of the first shared resource described in the first website application is that the first cognitive database receives first
The time of request message；The not application of the first shared resource described in the neighbors application in the first cognitive database compass of competency
Time is that the cognitive database belonging to the neighbors in the first cognitive database compass of competency does not receive the neighbors
For applying for the time of the request message of the first shared resource.
Step 105: the first cognitive database according to the neighbors not in the first cognitive database compass of competency whether
First shared resource is occupied, and the neighbors in the first cognitive database compass of competency is to first shared resource
Occupancy situation, determine whether the first shared resource distributing to the first website using preset interference parser.
It is explained below in the method that a specific example provides above example.
It is the frequency spectrum share configuration diagram based on distributed cognition database referring to Fig. 1, Fig. 1.Each sensory perceptual system (packet
Include multiple websites) share spectrum resources demand is reported to location resource allocation center, by location resource allocation centre punch one
Share spectrum resources application request is sent to cognitive database after reason, includes the site identity for requesting shared resource in request, total
It enjoys resource location and application occupies duration.Cognitive database is into adjacent cognitive database request safe distance
The share spectrum resources distribution condition of other websites, and the share spectrum resources distribution condition of itself storage is combined, it is interfered
Analysis is to make decisions share spectrum resources application, and by result notice location resource allocation center.
The present invention is recognizing to solve collision problem existing for the spectra sharing system based on distributed cognition database
The occupancy situation field that shared resource is increased in the website shared resource occupied information of database purchase (or makees distribution shape
State) and shared resource application time field.Cognitive database is being received from location resource allocation center (i.e. from website)
When shared resource application is requested, the occupancy situation of the shared resource of corresponding website application is revised as " in application ", and will be current
Time is recorded as the application time.In this way, working as the shared money that adjacent cognitive database requests corresponding website to local cognitive database
When the occupancy situation of source, can the timely learning shared resource handled in local cognitive database, then in interference analysis
Before preliminary judgement can be identified according to the application time be that the shared resource is available/unavailable, to avoid two neighboring cognition data
Identical shared resource is distributed to adjacent website in library simultaneously, to avoid interfering, reduces collision probability.
Specifically, the information stored in cognitive database includes sensory perceptual system information table, authorization frequency point information table, perception system
System site information table and website shared resource occupied information table.Wherein website shared resource occupied information table is as shown in table 1 below, this
Invention increases shared resource occupancy situation field and shared resource application time field in the table.Shared resource is occupied
Situation field, 0 indicates that the frequency point has occupied, i.e., the shared resource is used in the current website；1 indicates that the shared resource is in
In application process.The shared resource application time is the time that cognitive database receives that shared resource application request starts to process.
1 website shared resource occupied information table of table
When cognitive database receives the perception resource bid from location resource allocation center, by being total in corresponding website
It enjoys in resource occupation information table, increases requested shared resource location information, set 1 (Shen for shared resource occupancy situation
Please in), and current absolute time is added to shared resource application time field.
Whether cognitive database judges other websites in the isolation range (safe range) of current site all on it
In compass of competency, if so, directly carrying out interference analysis；If it is not, then cognitive database is to adjacent cognitive database request
The shared resource occupied information of other websites in isolation range.
The shared resource that understanding database obtains other websites within the scope of the isolation distance that adjacent cognitive database is sent accounts for
After information table, according in the shared resource occupied information table of other websites to the occupancy situation field of same shared resource and same
One shared resource bid time field, judges whether adjacent cognitive database by same shared resource is allocated to isolation distance model
Other interior websites are enclosed, specific as follows referring to Fig. 3:
If not including the shared money in the shared resource occupied information table of other websites of adjacent understanding Database Feedback
Source (or the occupancy situation field of the shared resource is 2 in the shared resource occupied information table of other websites, i.e., does not apply), then
Local cognitive database thinks that the shared resource is not distributed to other websites within the scope of isolation distance by adjacent cognitive database；
If it was found that the shared resource in the shared resource occupied information table of other websites of adjacent cognitive database feedback
Occupancy situation field is 0, then it represents that the shared resource has been distributed to other within the scope of isolation distance by adjacent cognitive database
Website；
If it was found that the shared resource in the shared resource occupied information table of other websites of adjacent cognitive database feedback
Occupancy situation field is 1, then it represents that adjacent cognitive database also has received within the scope of isolation distance other websites about same frequency
The shared resource application request of point, then cognitive database can further compare local shared resource application time field and adjacent area
The shared resource application time field of cognitive database feedback:
If local shared resources (LSR) application time field instruction time before the time that adjacent cognitive database provides,
Local cognitive database is considered as adjacent cognitive database and is not other websites within the scope of isolation distance and distributes same shared money
Source, the preliminary judgement shared resource are available.
If the local shared resources (LSR) application time is later than the application time that adjacent cognitive database provides, or both application when
Between it is the same, then local cognitive database determines that adjacent cognitive database distributes to the shared resource within the scope of isolation distance
Other websites, the preliminary judgement shared resource is unavailable, then local cognitive database is by adjacent cognitive database to shared resource
Occupancy situation be revised as having occupied.
Later, cognitive database will combine other websites in adjacent cognitive database isolation range to account for the shared resource
With situation and other websites of this system of itself storage to the occupancy situation of the shared resource, analyzed according to preset interference
Algorithm further determines whether that the shared resource requesting site can be distributed to.
If cognitive database judgement can distribute the shared resource, cognitive database is by website shared resource occupied information table
In shared resource occupancy situation field 0 (occupancy) is changed to (in application) by 1, and according to the holding time in request message
Filling occupies shared resource time started field and occupies shared resource trailer field, while deleting shared resource application time word
Section.
If cognitive database determines that the shared resource is unavailable, cognitive database slave site shared resource occupied information table
Middle deletion shared resource location field, shared resource occupancy situation field and shared resource application time field, or website is total to
The occupancy situation field for enjoying shared resource in resource occupation information table is revised as 2, i.e., does not apply, and by the shared resource application time
Field is removed.
Later, shared resource court verdict is notified location resource allocation center by cognitive database.
From the description above as it can be seen that the method for collision avoidance provided in an embodiment of the present invention based on distributed cognition database,
When adjacent cognitive database receives the shared frequency point resource bid of website in range simultaneously, adjacent cognition number can be obtained in time
According to the application situation and frequency point occupancy to the shared frequency point resource in library, avoid the same shared frequency point resource same time-division
The adjacent website of dispensing, reduces service disconnection probability, improves cognitive system to the service satisfaction of spectra sharing system.And
Scheme of the present invention is smaller to the change of existing mechanism, has very strong feasibility.
It should be noted that in above-mentioned steps 103, if judging the neighbors of first website all in the first cognition
When in the compass of competency of database, step 103a is executed.Wherein step 103a belongs to the prior art, is not emphasis of the invention.
Step 103a: first shared resource is accounted for according to the neighbors in the first cognitive database compass of competency
With situation, determine whether the first shared resource distributing to the first website using preset interference parser.
In other embodiments of the invention, the method also includes step 105a or step 105b.
Step 105a: after the first shared resource can be distributed to the first website by the first cognitive database determination,
Occupancy situation of first website to first shared resource is revised as having occupied.
Step 105b: the first shared resource cannot be distributed to the first website in the first cognitive database determination
Afterwards, occupancy situation of first website to first shared resource is revised as not applying.
In other embodiments of the invention, the method also includes step 106a or step 106b.
Step 106a: after the first shared resource can be distributed to the first website by the first cognitive database determination,
First cognitive database sends successful first response message of the first shared resource application to system where the first website.
Step 106b: the first shared resource cannot be distributed to the first website in the first cognitive database determination
Afterwards, the first cognitive database sends the first response message of the first shared resource application failure to system where the first website.
In other embodiments of the invention, the method also includes steps 107.
Step 107: after the first shared resource can be distributed to the first website by the first cognitive database determination, the
One cognitive database occupies the duration of the first shared resource according to the first site requests carried in the first request message, determines institute
It states initial time that the first shared resource is occupied by first website and terminates the time, and by the initial time and when terminating
Between be sent to first website.
Second embodiment of the present invention provides a kind of cognitive database, Fig. 4 shows cognition provided by Embodiment 2 of the present invention
The structural schematic diagram of database, referring to fig. 4, the cognitive database include receiving unit 10, modification unit 20, acquiring unit 30,
Judging unit 40 and determination unit 50.
Receiving unit 10, for receiving the first request message for being used to apply the first shared resource of the first website transmission；
Modify unit 20, for according to received first request message of the receiving unit 10 by the first website to described the
The occupancy situation of one shared resource is revised as in application；Wherein, website includes not to the occupancy situation of first shared resource
Application, application are neutralized and have been occupied；
Acquiring unit 30, for obtaining all neighbors of first website, the neighbors of first website be with
The distance of first website is less than or equal to the website of preset threshold；
Judging unit 40, for judging the neighbors of first website whether all in the administration model of itself cognitive database
In enclosing；
The acquiring unit 30 is also used to determine the neighbors of first website not all certainly in the judging unit 40
When in the compass of competency of body cognitive database, obtain not the neighbors in itself cognitive database compass of competency to described first
The occupancy situation of shared resource；
Determination unit 50, for shared to described first according to the not neighbors in itself cognitive database compass of competency
The occupancy situation of resource, and neighbors in itself cognitive database compass of competency is to the occupancy of first shared resource
Situation, it is determined whether the first shared resource can be distributed into the first website.
In the cognitive database that the embodiment of the present invention three provides, referring to Fig. 5, the determination unit 50 further comprises
Judgment module 501 obtains module 502 and the first determining module 503 and the second determining module 504；
The judgment module 501, for judging the neighbors not in itself cognitive database compass of competency to described
The occupancy situation of one shared resource be do not apply, apply in still occupied；
First determining module 503, it is described not in itself cognitive database pipe for being determined in the judgment module 501
Neighbors in linchpin range is when not applying, to determine not in the first cognitive database to the occupancy situation of first shared resource
Vacant first shared resource of neighbors in compass of competency；
First determining module 503 is also used to determine in the judgment module 501 described not in itself cognitive database
Neighbors in compass of competency is to determine when having occupied and do not recognize data first to the occupancy situation of first shared resource
Neighbors in the compass of competency of library has occupied first shared resource；
The acquisition module 502, it is described not in itself cognitive database administration model for being determined in the judgment module 501
Neighbors in enclosing is obtained and is not administered in itself cognitive database to when the occupancy situation of first shared resource is in application
The application time of first shared resource described in neighbors application in range；
The judgment module 501, be also used to judge the first shared resource described in the first website application application time whether
Before the not application time of the first shared resource described in the neighbors application in itself cognitive database compass of competency；
First determining module 503 is also used to determine described in the first website application that first is total in the judgment module 501
The application time of resource is enjoyed in the not first shared money described in the neighbors application in itself cognitive database compass of competency
When before the application time in source, determine that the neighbors vacant described first not in the first cognitive database compass of competency is shared
Resource；
First determining module 503 is also used to determine described in the first website application that first is total in the judgment module 501
It is first shared not described in the neighbors application in itself cognitive database compass of competency not described to enjoy application time of resource
When before the application time of resource, it is total to determine that the neighbors not in the first cognitive database compass of competency has occupied described first
Enjoy resource；
Wherein, the application time of the first shared resource described in the first website application is that itself cognitive database receives first
The time of request message；The not application of the first shared resource described in the neighbors application in itself cognitive database compass of competency
Time is that the cognitive database belonging to the neighbors in itself cognitive database compass of competency does not receive the neighbors
For applying for the time of the request message of the first shared resource；
Second determining module 504 does not recognize data first for what is determined according to first determining module 503
Whether the neighbors in the compass of competency of library has occupied first shared resource, and in the first cognitive database compass of competency
Neighbors to the occupancy situation of first shared resource, determined whether using preset interference parser by first
Shared resource distributes to the first website.
In other embodiments of the invention, the first shared resource can be distributed to in 50 determination of determination unit
After one website, the modification unit 20 is also used to for occupancy situation of first website to first shared resource being revised as
It occupies；
Or,
After the first shared resource cannot be distributed to the first website by 50 determination of determination unit, the modification unit
20, it is also used to be revised as not applying by occupancy situation of first website to first shared resource.
Cognitive database provided in an embodiment of the present invention can be used for executing method described in above-described embodiment, principle and
Technical effect is similar, and and will not be described here in detail.
The above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of method for collision avoidance based on distributed cognition database characterized by comprising
The for first the first shared resource of website application that system where first cognitive database receives the first website is sent
One request message,
And occupancy situation of first website to first shared resource is revised as applying according to first request message
In；Wherein, website has occupied the occupancy situation of first shared resource including not applying, applying to neutralize；
First cognitive database obtains all neighbors of first website, and the neighbors of first website is and the
The distance of one website is less than or equal to the website of preset threshold；
The neighbors of first website is judged whether all in the compass of competency of the first cognitive database, if it is not, then obtaining not
The occupancy situation of neighbors in the first cognitive database compass of competency to first shared resource；
According to the neighbors not in the first cognitive database compass of competency to the occupancy situation of first shared resource, and
The occupancy situation of neighbors in the first cognitive database compass of competency to first shared resource, it is determined whether can will
First shared resource distributes to the first website, specifically:
If the neighbors in the first cognitive database compass of competency is not application to the occupancy situation of first shared resource
In, then:
Obtain the application time of not the first shared resource described in the neighbors application in the first cognitive database compass of competency；
Judge the first shared resource described in the first website application application time whether described not in the first cognitive database pipe
It has jurisdiction over before the application time of the first shared resource described in the neighbors application in range, if so, the first cognitive database determines
Vacant first shared resource of neighbors not in the first cognitive database compass of competency.
2. the method according to claim 1, wherein the acquisition is not in the first cognitive database compass of competency
Neighbors include: to the occupancy situation of first shared resource
Obtain the not cognitive database belonging to the neighbors in the first cognitive database compass of competency, Xiang Suoshu cognitive database
It sends for obtaining the neighbors to the second request message of the occupancy situation of first shared resource, and described in reception
The occupancy feelings comprising the neighbors to first shared resource that cognitive database is sent according to second request message
Second response message of condition.
3. the method according to claim 1, wherein further include:
After the first shared resource can be distributed to the first website by the first cognitive database determination, by the first website to institute
The occupancy situation for stating the first shared resource is revised as having occupied；
Or,
After the first shared resource cannot be distributed to the first website by the first cognitive database determination, by the first website pair
The occupancy situation of first shared resource is revised as not applying.
4. any method according to claim 1~3, which is characterized in that according to not in the first cognitive database administration model
Interior neighbors is enclosed to the occupancy situation of first shared resource, and the neighboring station in the first cognitive database compass of competency
Occupancy situation of the point to first shared resource, it is determined whether the first shared resource can be distributed to the first website includes:
If the neighbors in the first cognitive database compass of competency is not non-Shen to the occupancy situation of first shared resource
Please, then the first cognitive database determines that the neighbors vacant described first not in the first cognitive database compass of competency is shared
Resource；
If the neighbors in the first cognitive database compass of competency is not to have accounted for the occupancy situation of first shared resource
With then it is shared to determine that the neighbors not in the first cognitive database compass of competency has occupied described first for the first cognitive database
Resource；
If the neighbors in the first cognitive database compass of competency is not application to the occupancy situation of first shared resource
In, then:
Obtain the application time of not the first shared resource described in the neighbors application in the first cognitive database compass of competency；
Judge the first shared resource described in the first website application application time whether described not in the first cognitive database pipe
It has jurisdiction over before the application time of the first shared resource described in the neighbors application in range, if so, the first cognitive database determines
Vacant first shared resource of neighbors not in the first cognitive database compass of competency；
Otherwise the first cognitive database determines that the neighbors not in the first cognitive database compass of competency has occupied described first
Shared resource；
Whether the first cognitive database has occupied described first according to the neighbors not in the first cognitive database compass of competency
Shared resource, and neighbors in the first cognitive database compass of competency is to the occupancy situation of first shared resource,
It determines whether the first shared resource distributing to the first website using preset interference parser；
Wherein, the application time of the first shared resource described in the first website application is that the first cognitive database receives the first request
The time of message；The not application time of the first shared resource described in the neighbors application in the first cognitive database compass of competency
Being used for for the neighbors is received for the not cognitive database belonging to the neighbors in the first cognitive database compass of competency
Apply for the time of the request message of the first shared resource.
5. according to the method described in claim 4, it is characterized in that, obtaining the not neighbour in the first cognitive database compass of competency
The application time of first shared resource described in website application includes:
First cognitive database is sent to the not cognitive database belonging to the neighbors in the first cognitive database compass of competency
Recognize for obtaining the third request message of the application time of the first shared resource described in the neighbors application, and described in reception
Primary data library is according to when the application comprising the first shared resource described in the neighbors application that the third request message is sent
Between third response message.
6. any method according to claim 1~3, which is characterized in that further include:
After the first shared resource can be distributed to the first website by the first cognitive database determination, the first cognitive database
System sends successful first response message of the first shared resource application where to the first website；
Or,
After the first shared resource cannot be distributed to the first website by the first cognitive database determination, the first cognition data
Library sends the first response message of the first shared resource application failure to system where the first website.
7. any method according to claim 1~3, which is characterized in that further include:
After the first shared resource can be distributed to the first website by the first cognitive database determination, the first cognitive database
The duration that the first shared resource is occupied according to the first site requests carried in the first request message determines the described first shared money
Initial time that source is occupied by first website and terminate the time, and by the initial time and terminate the time be sent to it is described
First website.
8. a kind of cognitive database system characterized by comprising
Receiving unit, first for first the first shared resource of website application sent for system where receiving the first website
Request message；
Unit is modified, for the first website to be shared money to described first according to received first request message of the receiving unit
The occupancy situation in source is revised as in application；Wherein, website is to the occupancy situation of first shared resource including not applying, applying
Neutralization has occupied；
Acquiring unit, for obtaining all neighbors of first website, the neighbors of first website is and first stop
The distance of point is less than or equal to the website of preset threshold；
Judging unit, for judging the neighbors of first website whether all in the compass of competency of itself cognitive database；
The acquiring unit is also used to determine that the neighbors of first website all itself is not recognizing number in the judging unit
When according in the compass of competency in library, obtain not the neighbors in itself cognitive database compass of competency to first shared resource
Occupancy situation；
Determination unit, for according to the not neighbors in itself cognitive database compass of competency to first shared resource
Occupancy situation, and neighbors in itself cognitive database compass of competency is to the occupancy situation of first shared resource,
It determines whether to distribute to the first shared resource into the first website, the determination unit is specifically used for: if not in the first cognition
Neighbors in database compass of competency is in application, then to the occupancy situation of first shared resource: being obtained not first
The application time of first shared resource described in neighbors application in cognitive database compass of competency；Judge the first website application institute
The application time of the first shared resource is stated whether in the neighbors application institute not in the first cognitive database compass of competency
Before the application time for stating the first shared resource, do not administered in the first cognitive database if so, the first cognitive database determines
Vacant first shared resource of neighbors in range.
9. cognitive database system according to claim 8, which is characterized in that
After the first shared resource can be distributed to the first website by the determination unit determination, the modification unit is also used to
Occupancy situation of first website to first shared resource is revised as having occupied；
Or,
After the first shared resource cannot be distributed to the first website by the determination unit determination, the modification unit is also used
It is revised as not applying in by occupancy situation of first website to first shared resource.
10. cognitive database system according to claim 8 or claim 9, which is characterized in that the determination unit includes judging mould
Block obtains module, the first determining module and the second determining module；
The judgment module, for judging the neighbors not in itself cognitive database compass of competency to the described first shared money
The occupancy situation in source be do not apply, apply in still occupied；
First determining module, it is described not in itself cognitive database compass of competency for being determined in the judgment module
Neighbors is when not applying, to determine not in the first cognitive database compass of competency to the occupancy situation of first shared resource
Vacant first shared resource of neighbors；
First determining module is also used to determine in the judgment module described not in itself cognitive database compass of competency
Neighbors be when having occupied, to determine not in the first cognitive database compass of competency to the occupancy situation of first shared resource
Interior neighbors has occupied first shared resource；
The acquisition module, for determining the not neighboring station in itself cognitive database compass of competency in the judgment module
Point obtains the not neighbour in itself cognitive database compass of competency to when the occupancy situation of first shared resource is in application
The application time of first shared resource described in website application；
The judgment module, be also used to judge the first shared resource described in the first website application application time whether it is described not
Before the application time of the first shared resource described in the neighbors application in itself cognitive database compass of competency；
First determining module is also used to determine the Shen of the first shared resource described in the first website application in the judgment module
Please the time in the not application of the first shared resource described in the neighbors application in itself cognitive database compass of competency
Between before when, determine vacant first shared resource of neighbors not in the first cognitive database compass of competency；
First determining module is also used to determine the Shen of the first shared resource described in the first website application in the judgment module
Please the time not in the application of not first shared resource described in the neighbors application in itself cognitive database compass of competency
When before the time, determine that the neighbors not in the first cognitive database compass of competency has occupied first shared resource；
Wherein, the application time of the first shared resource described in the first website application is that itself cognitive database receives the first request
The time of message；The not application time of the first shared resource described in the neighbors application in itself cognitive database compass of competency
Being used for for the neighbors is received for the not cognitive database belonging to the neighbors in itself cognitive database compass of competency
Apply for the time of the request message of the first shared resource；
Second determining module, for according to first determining module determine not in the first cognitive database compass of competency
Whether interior neighbors has occupied first shared resource, and the neighbors pair in the first cognitive database compass of competency
The occupancy situation of first shared resource is determined whether using preset interference parser by the first shared resource point
The first website of dispensing.
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