CN103731838B - Cooperative frequency spectrum sensing method and equipment in a kind of cognitive radio system - Google Patents
Cooperative frequency spectrum sensing method and equipment in a kind of cognitive radio system Download PDFInfo
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- CN103731838B CN103731838B CN201210381971.6A CN201210381971A CN103731838B CN 103731838 B CN103731838 B CN 103731838B CN 201210381971 A CN201210381971 A CN 201210381971A CN 103731838 B CN103731838 B CN 103731838B
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Abstract
The invention discloses the cooperative frequency spectrum sensing method in a kind of cognitive radio system and equipment, this method includes：The transfer resource and transmission means for target spectrum sensing results of being made an appointment between sensing node and sensing results receiving node；The sensing node sends the local sensing results on the target spectrum using the transfer resource of the target spectrum sensing results with transmission means to the sensing results receiving node.In the embodiment of the present invention, by using the transfer resource and the local sensing results on transmission means transmission objectives frequency spectrum of the target spectrum sensing results made an appointment, avoid the resource that CR systems distribute each target spectrum collaborative sensing result transmission for each sensing node, so as to reduce the resource overhead during collaborative spectrum sensing, and the Radio Resource transmitted in CR systems for business is improved, improve the capacity of CR systems.
Description
Technical field
The present invention relates to communication technical field, more particularly, to the collaborative spectrum sensing in a kind of cognitive radio system
Method and apparatus.
Background technology
Radio communication frequency spectrum is a kind of valuable natural resources, with the very fast development of wireless communication technology, frequency spectrum money
The problem of source is poor is increasingly serious, and in order to alleviate the present situation that frequency spectrum resource is nervous, currently wireless communication spectrum is monitored
And research, find some frequency ranges（Such as TV band）In most of time and be not used or do not make in most of regions
With, and some frequency ranges then occur in that multisystem multi-user while situation about competing, the i.e. use of frequency spectrum resource exists unbalanced
Phenomenon.
CR（Cognitive Radio, cognitive radio）Concept exactly produce under this background, its basic thought
It is：On the premise of not interfered to authoring system, CR systems can be by monitoring the change of current radio environment come dynamic
Opportunistic white spaces are accessed to be communicated；Wherein, when the blank frequency spectrum of CR system opportunistic insertion authority systems, premise
It is the harmful interference for protecting authoring system business not by CR systems, this is required：CR systems, which have, to be accurately judged to authorize system
The ability of the blank frequency spectrum for frequency range of uniting（Determine blank frequency spectrum）；CR system discoveries authoring system is in currently used blank frequency spectrum
（Source working frequency points）On reappear, CR systems exit currently used blank frequency spectrum in time（I.e. frequency spectrum switches）.
Accordingly, it is determined that blank frequency spectrum is the premise of CR systems work, important in inhibiting, and frequency are protected for authoring system
Spectrum perceives the important means for being to determine blank frequency spectrum, and frequency spectrum perception refers to by detecting that the signal of authoring system is sentenced on target spectrum
Whether disconnected authoring system takes target spectrum, that is, judges that target spectrum takes or idle.Further, due to shadow effect, many
" concealed terminal " problem caused by footpath decline etc., causes the CR system interferences authorized user communication perceived using single-point, to overcome
The problem, CR systems need to improve detecting period or use increasingly complex perception algorithm, so that the realization for adding system is answered
Miscellaneous degree.
Therefore, CR systems improve frequency spectrum perception performance using collaborative sensing, i.e., using being in multiple diverse geographic locations
Collaborative sensing node sensing results eliminate individual node the problem of, so as to improve perceptual performance.Collaborative sensing includes concentrating
Formula collaborative sensing and distributed collaborative are perceived；In centralized collaborative sensing, multiple sensing nodes perform frequency spectrum perception, will be local
Sensing results report fusion center, and fusion center handles the result of multiple sensing nodes according to fusion criterion, obtain cooperation sense
Know result；In distributed collaborative perception, multiple sensing nodes perform the local perception of interaction between frequency spectrum perception, and sensing node
As a result, each sensing node handles the result of multiple sensing nodes according to fusion criterion, obtains collaborative sensing result.
Further, fusion criterion conventional at present includes：Or（Or）、And（With）、Voting（Ballot）Deng its is basic
Principle is：Sensing node transmits the local sensing results of hard decision of 1 bit, for representing that target spectrum takes or idle；Fusion
Center/sensing node obtains collaborative sensing result according to the local sensing results of multiple sensing nodes, and judgement target spectrum takes
Or it is idle.Wherein, Or fusion criterions：When in multiple collaborative sensing nodes, the local court verdict of at least one sensing node is mesh
When marking frequency spectrum occupancy, collaborative sensing result is that target spectrum is occupied；And fusion criterions：When in multiple collaborative sensing nodes, institute
Have the local court verdict of sensing node be target spectrum take when, collaborative sensing result be target spectrum it is occupied；Voting
Fusion criterion：When in multiple collaborative sensing nodes, local court verdict be the sensing node quantity that target spectrum takes exceed or
During equal to certain thresholding, collaborative sensing result is that target spectrum is occupied.
During the present invention is realized, inventor has found at least there is problems with the prior art：
As shown in figure 1, being the transmission method of the centralized collaborative sensing result of CR systems, passed in CR cooperative systems sensing results
In transmission method, because all sensing nodes are required for reporting or interactive perception result, general fusion center can be distributed（Or perceive
It can consult between node）Each collaborative sensing node perceived result reports/interacted required wireless transmission resources；When collaborative sensing section
When counting out more, very high resource overhead can be caused, the Radio Resource that can be used for business to transmit in CR systems, drop is reduced
The low capacity of CR systems.
For example, during centralized collaborative sensing, CR systems target spectrum to be perceived is 4, each target spectrum
Collaborative sensing node be 10, it is assumed that the sensing node of each target spectrum is different, then sensing node sum is 40 in CR systems
Individual, fusion center needs the resource for needed for 40 sensing node dispatching distribution sensing results transmission, in periodicity collaboration frequency spectrum sense
In knowing, CR systems need the resource for needed for 40 sensing node dispatching distribution sensing results transmission in each perception cycle, cause
Unusual big resource overhead.
The content of the invention
The embodiment of the present invention provides cooperative frequency spectrum sensing method and equipment in a kind of cognitive radio system, to reduce association
Make the resource overhead during frequency spectrum perception.
In order to achieve the above object, the embodiment of the present invention provides the collaborative spectrum sensing side in a kind of cognitive radio system
Method, this method includes：The transmission money for target spectrum sensing results of being made an appointment between sensing node and sensing results receiving node
Source and transmission means；The sensing node is using transfer resource and the transmission means of the target spectrum sensing results to the sense
Know that result receiving node sends the local sensing results on the target spectrum.
The embodiment of the present invention provides the cooperative frequency spectrum sensing method in a kind of cognitive radio system, including：Sensing results
The transfer resource and transmission means for target spectrum sensing results of being made an appointment between receiving node and sensing node；It is described to perceive knot
Fruit receiving node receives the sensing node on the transfer resource of the target spectrum sensing results and utilizes the target spectrum
The local sensing results on the target spectrum that the transfer resource of sensing results is sent with transmission means；Sensing results receive section
Point determines the association on the target spectrum using the sensing results received on the transfer resource of the target spectrum sensing results
Make sensing results.
The embodiment of the present invention provides a kind of sensing node, including：Arrange unit, between sensing results receiving node
The transfer resource and transmission means for target spectrum sensing results of making an appointment；Transmitting element, for utilizing the target spectrum sense
Know that the transfer resource of result sends the local perception on the target spectrum with transmission means to the sensing results receiving node
As a result.
The embodiment of the present invention provides a kind of sensing results receiving node, including：Arrange unit, between sensing node
The transfer resource and transmission means for target spectrum sensing results of making an appointment；Receiving unit, for being perceived in the target spectrum
As a result transfer resource and transmission means of the sensing node using the target spectrum sensing results are received on transfer resource
The local sensing results on the target spectrum sent；Determining unit, for using in the target spectrum sensing results
The sensing results received on transfer resource determine the collaborative sensing result on the target spectrum.
Compared with prior art, the embodiment of the present invention at least has advantages below：In the embodiment of the present invention, by using pre-
The transfer resource for the target spectrum sensing results first arranged and the local sensing results on transmission means transmission objectives frequency spectrum, it is to avoid
CR systems distribute the resource of each target spectrum collaborative sensing result transmission for each sensing node, so as to reduce cooperation frequency
The resource overhead in perception is composed, and improves the Radio Resource transmitted in CR systems for business, CR systems are improved
Capacity.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the accompanying drawing used required in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the transmission method schematic diagram of the centralized collaborative sensing result of CR systems in the prior art；
Fig. 2 is that the cooperative frequency spectrum sensing method flow in a kind of cognitive radio system that the embodiment of the present invention one is provided is shown
It is intended to；
Fig. 3 is a kind of structural representation for sensing node that the embodiment of the present invention three is provided；
Fig. 4 is a kind of sensing results receiving node structural representation that the embodiment of the present invention four is provided.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, shown
So, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention one provides a kind of cognitive radio system（CR systems）In cooperative frequency spectrum sensing method, the party
Method can apply to the LTE using cognitive radio technology（Long Term Evolution, Long Term Evolution）System, TD-
SCDMA（Time Division-Synchronous Code DivisionMultiple Access, time division synchronous code division is more
Location）System, GSM（Global System of Mobilecommunication, global system for mobile telecommunications）System, WCDMA
（Wideband Code DivisionMultiple Access, WCDMA）System, CDMA-2000（Code
Division MultipleAccess-2000, WCDMA 2000）System and WLAN（Wireless Local
AreaNetworks, WLAN）Deng GSM.As shown in Fig. 2 this method comprises the following steps：
Step 201, the transmission for target spectrum sensing results of being made an appointment between sensing node and sensing results receiving node
Resource and transmission means；The transfer resource of the target spectrum sensing results is used for all perception target spectrums with transmission means
Sensing node sends the local sensing results for the target spectrum.Wherein, when using centralized collaborative sensing mode, the sense
It is fusion center to know result receiving node；When using distributed collaborative perceptive mode, the sensing results receiving node is perception
Other sensing nodes outside node.
In the embodiment of the present invention, for same target spectrum, between said sensed node and sensing results receiving node
The transfer resource and transmission means for target spectrum sensing results of making an appointment, include but is not limited to：All sensing nodes are with perceiving
As a result the transfer resource and transmission means of identical of being made an appointment between receiving node target spectrum sensing results.
Need to be perceived target spectrum specifically, can only make an appointment between sensing node and sensing results receiving node
Sensing results transfer resource and transmission means；For example, target spectrum to be perceived is 4 in CR systems, then only need in advance
Transfer resource and transmission means of the agreement for 4 groups of sensing results of this 4 target spectrums；It is each to perceive in subsequent step
Node carries out the perception for the target spectrum using the transfer resource of its target spectrum sensing results perceived with transmission means
As a result report；The collaborative sensing node for such as assuming target spectrum 1 is 10, then perceives 10 sensing node profits of target spectrum 1
The sensing results for carrying out target spectrum 1 with transmission means with the transfer resource of the sensing results of target spectrum 1 are transmitted.
In the embodiment of the present invention, the transfer resource of the target spectrum sensing results can include but is not limited to：For transmitting
It is just between time resource/frequency resource of target spectrum sensing results, and the transfer resource of multiple target spectrum sensing results
Hand over；Further, the transfer resource of the target spectrum sensing results can also include code resource, and orthogonal between transfer resource
Refer to that time resource/frequency resource is not overlapped, or, when time resource/frequency resource is overlapping, code resource is orthogonal.
In addition, during periodicity collaborative spectrum sensing, in a kind of preferred embodiment, target spectrum sensing results
Transfer resource can also include：Time cycle of transfer resource, and the time cycle of transfer resource be equal to collaborative spectrum sensing
Time cycle；Wherein, the time cycle of transfer resource refers to that local sensing results periodically report used transfer resource
Time cycle；Periodicity collaborative spectrum sensing refers to be directed to some target spectrum, the sensing node of all this target spectrums of perception
All periodically the target spectrum is perceived, and for same target spectrum, the time of the collaborative spectrum sensing of sensing node
Cycle phase is same.
In the embodiment of the present invention, the transmission means of the target spectrum sensing results can include but is not limited to：When target frequency
Local sensing results in spectrum are when taking, then to need to send what is made an appointment on the transfer resource of target spectrum sensing results
Signal（Or the code to make an appointment, it is one kind of signal）；When the local sensing results on target spectrum is the free time, then not
Need to send any signal.
Further, when using centralized collaborative sensing, if fusion center is base station equipment, sensing node is terminal
Equipment, then the transmission means of target spectrum sensing results can also include power control information, and the power control information is used for
Prescribed terminal equipment reaches the target received power of base station equipment.
In the embodiment of the present invention, target spectrum sensing results of being made an appointment between sensing node and sensing results receiving node
Transfer resource and transmission means can include but is not limited in the following manner：Mode one, sensing node and sensing results, which are received, to be saved
The transfer resource and transmission means of target spectrum sensing results are provided between point by agreement static state；Mode two, sensing node with
Dynamically arrange transfer resource and the transmission of target spectrum sensing results between sensing results receiving node by information/Signalling exchange
Mode.
Specifically, for mode two, when using centralized collaborative sensing, if fusion center is base station equipment, perceiving
Node is terminal device, then base station equipment by system information or dedicated signaling by the transfer resource of target spectrum sensing results
Notified with transmission means to terminal device, receive what base station equipment was notified by system information or dedicated signaling by terminal device
The transfer resource and transmission means of target spectrum sensing results；Or, base station equipment is by frequency spectrum perception request message by target
The transfer resource of frequency spectrum perception result notifies to terminal device that receiving base station equipment by terminal device passes through frequency spectrum with transmission means
The transfer resource and transmission means for the target spectrum sensing results that sensing request message is notified.
For mode two, when being perceived using distributed collaborative, some can be selected to feel between multiple collaborative sensing nodes
It is head sensing node to know node, and by the transfer resource and transmission means of head sensing node decision objective frequency spectrum perception result, with
And dynamically arrange the transfer resource and transmission means of target spectrum sensing results between head sensing node and other sensing nodes.
Step 202, sensing node is connect using the transfer resource of target spectrum sensing results with transmission means to sensing results
Receive the local sensing results on node transmission target spectrum.
In this step, certain target spectrum is perceived（Such as target spectrum i）All sensing nodes using target spectrum i perceive knot
The transfer resource of fruit is sent for the local sensing results on target spectrum i with transmission means；Assuming that certain sensing node wait feel
Know that target spectrum has multiple, then the sensing node is distinguished using the transfer resource of each target spectrum sensing results with transmission means
Local sensing results of the transmission for the target spectrum.
In the embodiment of the present invention, sensing node is using transfer resource and the transmission means of target spectrum sensing results to perception
As a result receiving node sends the local sensing results on target spectrum, is specifically including but not limited to：Sensing node is by perceiving mesh
Mark the local sensing results on frequency spectrum acquisition target spectrum；When the local sensing results on target spectrum is take, section is perceived
Point sends the signal made an appointment on the transfer resource of target spectrum sensing results to sensing results receiving node（Code）；Work as mesh
When marking the local sensing results on frequency spectrum for the free time, sensing node does not send any signal.
Further, when using centralized collaborative sensing, if fusion center is base station equipment, sensing node is terminal
Equipment, and the transmission means of target spectrum sensing results also includes power control information, the power control information is used to provide end
End equipment reaches the target received power of base station equipment；Then：Sensing node using target spectrum sensing results transfer resource with
Transmission means sends the local sensing results on target spectrum to sensing results receiving node, in addition to：Terminal device is according to work(
Rate control information determines the transmit power of the local sensing results on target spectrum, and is perceived using transmit power in target spectrum
As a result the local sensing results on target spectrum are sent to base station equipment on transfer resource.
Step 203, sensing results receiving node receives sensing node profit on the transfer resource of target spectrum sensing results
With the transfer resource of target spectrum sensing results and the local sensing results on the target spectrum of transmission means transmission；Wherein, when
During using centralized collaborative sensing, sensing results receiving node is fusion center；When being perceived using distributed collaborative, knot is perceived
Fruit receiving node is other sensing nodes outside sensing node.
In the embodiment of the present invention, the sensing results that sensing results receiving node is received include receiving signal, and assume CR systems
There is the target spectrum of multiple collaborative sensings in system, then sensing results receiving node needs to correspond to respectively in multiple target spectrums
Target spectrum sensing results transfer resource on receive signal.
Step 204, sensing results receiving node utilizes the perception received on the transfer resource of target spectrum sensing results
As a result the collaborative sensing result on target spectrum is determined.
Specifically, assuming there is the target spectrum of multiple collaborative sensings in CR systems, then sensing results receiving node needs
The collaborative sensing knot of each target spectrum is determined according to the reception signal on the transfer resource of each target spectrum respectively respectively
Really；When using centralized collaborative sensing, collaborative sensing result is determined by fusion center；When being perceived using distributed collaborative,
Collaborative sensing result is determined by sensing node.
In the embodiment of the present invention, sensing results receiving node is utilized to be received on the transfer resource of target spectrum sensing results
Sensing results determine collaborative sensing result on target spectrum, including but not limited in the following manner：Sensing results receiving node
Calculate the reception signal on the transfer resource of target spectrum sensing results（Code）Mean power, and compare the mean power with it is pre-
The magnitude relationship of gating limit；If the mean power is more than pre-determined threshold, it is determined that collaborative sensing result is that target spectrum is occupied
With；If the mean power is not more than pre-determined threshold, it is determined that collaborative sensing result is that target spectrum is idle.
Further, the set-up mode of above-mentioned pre-determined threshold includes but is not limited to following manner：Mode one, any set should
Pre-determined threshold；Mode two, when the fusion criterion that sensing results receiving node is used is Or criterion, the pre-determined threshold be based on perceive
As a result the noise power of receiving node is configured；Mode three, when using centralized collaborative sensing, if fusion center is base
Station equipment, sensing node is terminal device, then, can when the transmission means of target spectrum sensing results includes power control information
To set pre-determined threshold according to the fusion criterion of the power control information and the use of sensing results receiving node.
Be P received targert for mode three, hypothesis power control information, then according to power control information and
The fusion criterion that sensing results receiving node is used is set in a kind of preferred embodiment of pre-determined threshold, and pre-determined threshold is set
For N*P received targert；When fusion criterion is Or criterions, N=1；When fusion criterion is And criterions, N is perception
The collaborative sensing node total number of target spectrum（Do not include sensing results receiving node）；When fusion criterion is Voting criterions, N
=L, L implication is：When in multiple collaborative sensing nodes, local court verdict is that the sensing node quantity that target spectrum takes surpasses
Cross or equal to L（Do not include sensing results receiving node）When, then collaborative sensing result is that target spectrum is occupied.
In the embodiment of the present invention, if sensing results receiving node possesses perceptional function, sensing results receiving node exists
When determining the collaborative sensing result of target spectrum, also using local sensing results, based on this, sensing results receiving node is utilized
The sensing results received on the transfer resource of target spectrum sensing results determine the collaborative sensing result on target spectrum, may be used also
With including following manner：
If step A, fusion criterion are Or criterions, and local perception knot of the sensing results receiving node on target spectrum
Fruit is takes, then sensing results receiving node determines that collaborative sensing result is occupied for target spectrum, and terminates flow；Otherwise
（I.e. fusion criterion is Or criterions, and local sensing results of the sensing results receiving node on target spectrum are the free time；Or,
Fusion criterion is other criterions）, perform step B；
Step B, sensing results receiving node calculate the reception signal on the transfer resource of target spectrum sensing results（Code）
Mean power, and compare the mean power and the magnitude relationship of pre-determined threshold；If the mean power is more than pre-determined threshold,
Determine that collaborative sensing result is occupied for target spectrum；If the mean power is not more than pre-determined threshold, it is determined that collaborative sensing
As a result it is idle for target spectrum.
Further, the set-up mode of above-mentioned pre-determined threshold includes but is not limited to following manner：Mode one, any set should
Pre-determined threshold；Mode two, when the fusion criterion that sensing results receiving node is used is Or criterion, the pre-determined threshold be based on perceive
As a result the noise power of receiving node is configured；Mode three, when using centralized collaborative sensing, if fusion center is base
Station equipment, sensing node is terminal device, then, can when the transmission means of target spectrum sensing results includes power control information
To set pre-determined threshold according to the fusion criterion of the power control information and the use of sensing results receiving node.
Be P_received_targert for mode three, hypothesis power control information, then according to power control information and
The fusion criterion that sensing results receiving node is used is set in a kind of preferred embodiment of pre-determined threshold, and pre-determined threshold is set
For N*P_received_targert；When fusion criterion is Or criterions, N=1；When fusion criterion is And criterions, N is perception
The collaborative sensing node total number of target spectrum（Do not include sensing results receiving node）；When fusion criterion is Voting criterions, N
=L, L implication is：When in multiple collaborative sensing nodes, local court verdict is that the sensing node quantity that target spectrum takes surpasses
Cross or equal to L（Do not include sensing results receiving node）When, then collaborative sensing result is that target spectrum is occupied.
In summary, in the embodiment of the present invention, CR systems are for each target spectrum distribution collaborative sensing result transmission institute
Transfer resource and transmission means, so that avoid CR systems distributes each target spectrum cooperation sense for each sensing node
Know the resource of result transmission, it is possible to decrease the resource overhead during collaborative spectrum sensing, and improve in CR systems for business
The Radio Resource of transmission, improves the capacity of CR systems.For example, for centralized collaborative sensing mode, CR systems are to be perceived
Target spectrum is 4, and the collaborative sensing node of each target spectrum is 10, and fusion center is needed for 40 senses in the prior art
Know resource needed for node scheduling distribution sensing results transmission；And fusion center is only needed for 4 target frequencies in the embodiment of the present invention
Spectrum distribution resource, and target spectrum i 10 sensing nodes are all utilized as the resource progress sensing results hair that target spectrum i is distributed
Send, so as to significantly reduce resource overhead needed for sensing results transmission.
Embodiment two
The embodiment of the present invention two provides a kind of cognitive radio system（CR systems）In cooperative frequency spectrum sensing method, it is assumed that
Fusion center is base station equipment（eNode B）, sensing node is terminal device（UE）, base station carries out periodicity association using Or criterions
Make the fusion of sensing results；This method includes：
Transfer resource and transmission means that step A, eNode B and UE make an appointment for target spectrum sensing results；Should
The sensing node that the transfer resource of target spectrum sensing results is used for all perception target spectrums with transmission means, which is sent, to be directed to
The local sensing results of the target spectrum.
For example, target spectrum to be perceived is M, eNode B and UE first arranges each target spectrum collaborative sensing and reported
Transfer resource used, it is assumed that be for the transfer resource of i-th of target spectrum agreement：Centre frequency is fi, with a width of Bi, when
Between resource be SFNiThe subframe of individual system-frameiThe n-th of individual subframeiIndividual symbol, code used is complete 1 sequence, and is divided
The system-frame and subframe matched somebody with somebody are met：
(10×SFNi+subframei)
=[(10 × SFNstat time,i+subframestart time,i)+z × SensingCycle] mod 10240, z ＞ 0
In above-mentioned formula, the implication of parameters is as follows, wherein, SFNStart time, i、subframestart time,iWith
SensingCycle is that eNode B pass through RRC（Radio Resource Control, wireless heterogeneous networks）Protocol configuration is to UE
's；SFN is System Frame Number；Subframe is subframe numbers；SFNsTart time, iFor the System Frame Number of i-th of target spectrum distribution；
subframeStart time, iFor the subframe numbers of i-th of target spectrum distribution；SensingCycle is i-th of target spectrum distribution
Time resource cycle, unit is ms, and it is equal to the perception cycle at place.
Afterwards, each target spectrum collaborative sensing of eNode B and UE agreements reports transmission means used：When i-th of mesh
When marking the local sensing results of frequency spectrum to take, perceive UE and complete 1 sequence is sent on the running time-frequency resource of agreement, and Power Control is believed
Cease and be：Perceive UE and reach eNode B target received power for P received targert；When the local perception of target spectrum
When as a result for the free time, any signal is not sent.
Step B, perception UE utilize the collaborative sensing result transfer resource of the target spectrum of agreement according to local sensing results
And transmission means, report the local sensing results for the target apperception frequency spectrum.
Specifically, the perception of UE periodicity performance objective frequency spectrums, obtains the local sensing results of target spectrum, for
I-th of target spectrum：When the local sensing results of i-th of target spectrum is take, UE is used and is met above-mentioned formula（System-frame
And subframe meets formula）The n-th of first available system frame/subframe of constraintiIt is f in centre frequency on individual symboli, with a width of
BiFrequency resource on, send complete 1 sequence, and transmit power is determined according to the power control factor arranged in step A, and send
Power determination mode is：
Psent=min (Pmax,P_received_targert+PL)
In above-mentioned formula, PsentFor identified transmit power；PmaxFor UE maximum transmission power；P_received_
Targert is the target received power of the power control information, i.e. UE collaborative sensings result arrival eNode B arranged in step A；
PL is the downlink path loss information that UE is estimated.
In addition, when the local sensing results of i-th of target spectrum is the free time, any signal is not sent.
Step C, eNode B receives signal on the collaborative sensing result transfer resource for the target spectrum made an appointment.Tool
Body, for i-th of target spectrum, eNode B are meeting above-mentioned formula（That is system-frame and subframe meets formula）Constrained
The n-th of system-frame/subframeiIt is f in centre frequency on individual symboli, with a width of BiFrequency resource on receive signal.
Step D, eNode B is according to making an appointment for the collaborative sensing result transfer resource of target spectrum and sender
Reception signal in formula and the transfer resource determines the collaborative sensing result of target spectrum.
Specifically, after eNode B receive signal, the step of determining the collaborative sensing result of i-th target spectrum is as follows：
Calculate the reception signal on the collaborative sensing result transfer resource of i-th of target spectrum（Code）Mean power；By mean power
Compared with some thresholding and obtain collaborative sensing court verdict.Wherein, the thresholding is set according to eNode B noise power：Such as door
Limit is set to x times of noise power.
Embodiment three
Based on the inventive concept same with the above method, a kind of sensing node, such as Fig. 3 are additionally provided in the embodiment of the present invention
Shown, the sensing node includes：
Arrange unit 11, the transmission for target spectrum sensing results of being made an appointment between sensing results receiving node is provided
Source and transmission means；In the embodiment of the present invention, for same target spectrum, the agreement unit 11 of all sensing nodes is tied with perceiving
The transfer resource and transmission means of identical of being made an appointment between fruit receiving node target spectrum sensing results；
Transmitting element 12, is perceived for the transfer resource using the target spectrum sensing results with transmission means to described
As a result receiving node sends the local sensing results on the target spectrum.
In the embodiment of the present invention, the transfer resource of the target spectrum sensing results includes：For transmitting the target frequency
Time resource/frequency resource of sensing results is composed, and is orthogonal between the transfer resource of multiple target spectrum sensing results；With
And, during periodicity collaborative spectrum sensing, the transfer resource of the target spectrum sensing results also includes：Transfer resource
Time cycle, and time cycle of the time cycle equal to collaborative spectrum sensing of the transfer resource；Wherein, the transfer resource
Time cycle refer to local sensing results periodically report used in transfer resource time cycle.
In the embodiment of the present invention, the transmission means of the target spectrum sensing results includes：When on the target spectrum
Local sensing results are, it is necessary to send the letter made an appointment on the transfer resource of the target spectrum sensing results when taking
Number；When the local sensing results on the target spectrum is the free time, it is not necessary to send signal；The transmitting element 12, specifically
For obtaining the local sensing results on the target spectrum；When the local sensing results on the target spectrum is take,
The signal made an appointment is sent to the sensing results receiving node on the transfer resource of the target spectrum sensing results；When
When local sensing results on the target spectrum are idle, any signal is not sent.
In the embodiment of the present invention, when using centralized collaborative sensing, sensing results receiving node is fusion center, if
Fusion center is base station equipment, and sensing node is terminal device, and the transmission means of the target spectrum sensing results includes power
Control information, and the power control information is used for the intended recipient work(for indicating that the terminal device reaches the base station equipment
Rate；The transmitting element 12, specifically for determining the local perception knot on the target spectrum according to the power control information
The transmit power of fruit, and set using the transmit power on the transfer resource of the target spectrum sensing results to the base station
Preparation send the local sensing results on the target spectrum.
When using centralized collaborative sensing, the sensing results receiving node is fusion center, if fusion center is
Base station equipment, the sensing node is terminal device；The agreement unit 11, specifically for receiving the base station equipment by being
The transfer resource and transmission means for the target spectrum sensing results that information of uniting or dedicated signaling are notified；Or, receive institute
State the transfer resource and transmission means for the target spectrum sensing results that base station equipment is notified by frequency spectrum perception request message.
Wherein, the modules of apparatus of the present invention can be integrated in one, and can also be deployed separately.Above-mentioned module can be closed
And be a module, multiple submodule can also be further split into.
Example IV
Based on the inventive concept same with the above method, a kind of sensing results are additionally provided in the embodiment of the present invention and receive section
Point, as shown in figure 4, the sensing results receiving node includes：
Arrange unit 21, transfer resource and transmission for target spectrum sensing results of being made an appointment between sensing node
Mode；In the embodiment of the present invention, for same target spectrum, the agreement unit 21 of sensing results receiving node is saved with all perceive
The transfer resource and transmission means for identical target spectrum sensing results of being made an appointment between point；
Receiving unit 22, is utilized for receiving the sensing node on the transfer resource of the target spectrum sensing results
The local sensing results on the target spectrum that the transfer resource of the target spectrum sensing results is sent with transmission means；
Determining unit 23, for true using the sensing results received on the transfer resource of the target spectrum sensing results
Collaborative sensing result on the fixed target spectrum.
In the embodiment of the present invention, the transfer resource of the target spectrum sensing results includes：For transmitting the target frequency
Time resource/frequency resource of sensing results is composed, and is orthogonal between the transfer resource of multiple target spectrum sensing results；With
And, during periodicity collaborative spectrum sensing, the transfer resource of the target spectrum sensing results also includes：Transfer resource
Time cycle, and time cycle of the time cycle equal to collaborative spectrum sensing of the transfer resource；Wherein, the transfer resource
Time cycle refer to local sensing results periodically report used in transfer resource time cycle.
In the embodiment of the present invention, the transmission means of the target spectrum sensing results includes：When on the target spectrum
Local sensing results are, it is necessary to send the letter made an appointment on the transfer resource of the target spectrum sensing results when taking
Number；When the local sensing results on the target spectrum is the free time, it is not necessary to send signal；When using centralized collaborative sensing
When, the sensing results receiving node is fusion center, if fusion center is base station equipment, the sensing node sets for terminal
Standby, the transmission means of the target spectrum sensing results includes：Power control information, the power control information is used to indicate institute
State the target received power that terminal device reaches the base station equipment.
The sensing results that the sensing results receiving node is received include receiving signal；The determining unit 23 is specific to use
In the mean power of the reception signal on the transfer resource for calculating the target spectrum sensing results, and compare the mean power
With pre-determined threshold；If the mean power is more than the pre-determined threshold, it is determined that collaborative sensing result is the target spectrum
It is occupied；If the mean power is not more than the pre-determined threshold, it is determined that collaborative sensing result is that the target spectrum is empty
It is not busy.
The sensing results that the sensing results receiving node is received include receiving signal；The determining unit 23 is specific to use
If being Or criterions in fusion criterion, and local sensing results of the sensing results receiving node on the target spectrum are
Take, it is determined that collaborative sensing result is that the target spectrum is occupied；Otherwise, the biography of the target spectrum sensing results is calculated
The mean power of reception signal in defeated resource, and relatively more described mean power and pre-determined threshold；If the mean power is big
In the pre-determined threshold, determine that collaborative sensing result is occupied for the target spectrum；If the mean power is not more than institute
Pre-determined threshold is stated, determines that collaborative sensing result is idle for the target spectrum.
It is described pre- when the fusion criterion that the sensing results receiving node is used is Or criterion in the embodiment of the present invention
Noise power of the gating limit based on the sensing results receiving node is configured；Or, when using centralized collaborative sensing,
The sensing results receiving node is fusion center, and if fusion center is base station equipment, the sensing node sets for terminal
It is standby, then when the transmission means of the target spectrum sensing results includes power control information, according to the power control information
And the fusion criterion that the sensing results receiving node is used sets the pre-determined threshold.
When using centralized collaborative sensing, the sensing results receiving node is fusion center, if fusion center is
Base station equipment, the sensing node is terminal device；The agreement unit 21, specifically for passing through system information or special letter
Order notifies the transfer resource of the target spectrum sensing results and transmission means to the terminal device；Or, pass through frequency spectrum
Sensing request message notifies the transfer resource of the target spectrum sensing results and transmission means to the terminal device.
Wherein, the modules of apparatus of the present invention can be integrated in one, and can also be deployed separately.Above-mentioned module can be closed
And be a module, multiple submodule can also be further split into.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but in many cases, the former is more
Good embodiment.Understood based on such, what technical scheme substantially contributed to prior art in other words
Part can be embodied in the form of software product, and the computer software product is stored in a storage medium, if including
Dry instruction is to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Perform this hair
Method described in each bright embodiment.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module or stream in accompanying drawing
Journey is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can be divided according to embodiment description
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Disclosed above is only several specific embodiments of the present invention, and still, the present invention is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection scope of the present invention.
Claims (31)
1. the cooperative frequency spectrum sensing method in a kind of cognitive radio system, it is characterised in that including：
The transfer resource for target spectrum sensing results of being made an appointment between sensing node and sensing results receiving node and transmission side
Formula；Wherein, the transmission of target spectrum sensing results is provided between sensing node and sensing results receiving node by agreement static state
Resource and transmission means；Or, mesh is dynamically arranged by information/Signalling exchange between sensing node and sensing results receiving node
Mark the transfer resource and transmission means of frequency spectrum perception result；
The sensing node is connect using the transfer resource of the target spectrum sensing results with transmission means to the sensing results
Receive the local sensing results on the node transmission target spectrum；
Wherein, if the sensing node has multiple target spectrums to be perceived, the sensing node utilizes each target frequency
The transfer resource and transmission means of composing sensing results transmit the local sensing results for the target spectrum respectively.
2. the method as described in claim 1, it is characterised in that between the sensing node and sensing results receiving node in advance
Arrange the transfer resource and transmission means of target spectrum sensing results, including：
For same target spectrum, identical of being made an appointment between all sensing nodes and sensing results receiving node target spectrum
The transfer resource and transmission means of sensing results.
3. the method as described in claim 1, it is characterised in that the transfer resource of the target spectrum sensing results includes：With
Provided in the transmission of the time resource/frequency resource for transmitting the target spectrum sensing results, and multiple target spectrum sensing results
It is orthogonal between source.
4. method as claimed in claim 3, it is characterised in that during periodicity collaborative spectrum sensing, the target frequency
The transfer resource of spectrum sensing results also includes：The time cycle of transfer resource, and the transfer resource time cycle be equal to association
Make the time cycle of frequency spectrum perception；Wherein, the time cycle of the transfer resource refers to that local sensing results periodically report institute
The time cycle of the transfer resource used.
5. the method as described in claim 1, it is characterised in that the transmission means of the target spectrum sensing results includes：When
Local sensing results on the target spectrum are, it is necessary to be sent out on the transfer resource of the target spectrum sensing results when taking
Send the signal made an appointment；When the local sensing results on the target spectrum is the free time, it is not necessary to send signal；
The sensing node is connect using the transfer resource of the target spectrum sensing results with transmission means to the sensing results
The local sensing results on the node transmission target spectrum are received, including：
The sensing node obtains the local sensing results on the target spectrum；When the local perception knot on the target spectrum
When fruit is takes, the sensing node is received to the sensing results on the transfer resource of the target spectrum sensing results and saved
Point sends the signal made an appointment；When the local sensing results on the target spectrum is the free time, the sensing node is not sent out
Send any signal.
6. the method as described in claim 1, it is characterised in that when using centralized collaborative sensing, sensing results receive section
Point is fusion center, if fusion center is base station equipment, and the sensing node is terminal device, and the target spectrum perceives knot
The transmission means of fruit includes：Power control information, and the power control information is for indicating that it is described that the terminal device is reached
The target received power of base station equipment；
The sensing node is connect using the transfer resource of the target spectrum sensing results with transmission means to the sensing results
The local sensing results on the node transmission target spectrum are received, including：
The terminal device determines the transmission work(of the local sensing results on the target spectrum according to the power control information
Rate, and send described to the base station equipment on the transfer resource of the target spectrum sensing results using the transmit power
Local sensing results on target spectrum.
7. the method as described in claim 1, it is characterised in that when using centralized collaborative sensing, the sensing results connect
Receipts node be fusion center, if fusion center be base station equipment, the sensing node be terminal device, the sensing node with
The transfer resource and transmission means for target spectrum sensing results of being made an appointment between sensing results receiving node, including：
The terminal device receives the target spectrum sense that the base station equipment is notified by system information or dedicated signaling
Know the transfer resource and transmission means of result；Or,
The terminal device receives the target spectrum perception knot that the base station equipment is notified by frequency spectrum perception request message
The transfer resource and transmission means of fruit.
8. the cooperative frequency spectrum sensing method in a kind of cognitive radio system, it is characterised in that including：
The transfer resource for target spectrum sensing results of being made an appointment between sensing results receiving node and sensing node and transmission side
Formula；Wherein, the transmission of target spectrum sensing results is provided between sensing node and sensing results receiving node by agreement static state
Resource and transmission means；Or, mesh is dynamically arranged by information/Signalling exchange between sensing node and sensing results receiving node
Mark the transfer resource and transmission means of frequency spectrum perception result；
The sensing results receiving node receives the sensing node profit on the transfer resource of the target spectrum sensing results
With the transfer resource of the target spectrum sensing results and the local sensing results on the target spectrum of transmission means transmission；
Wherein, if the sensing node has multiple target spectrums to be perceived, the sensing node utilizes each target spectrum sense
The transfer resource and transmission means of knowing result transmit the local sensing results for the target spectrum respectively；
The sensing results receiving node utilizes the sensing results received on the transfer resource of the target spectrum sensing results
Determine the collaborative sensing result on the target spectrum.
9. method as claimed in claim 8, it is characterised in that between the sensing results receiving node and sensing node in advance
Arrange the transfer resource and transmission means of target spectrum sensing results, including：
For same target spectrum, identical target of being made an appointment between the sensing results receiving node and all sensing nodes
The transfer resource and transmission means of frequency spectrum perception result.
10. method as claimed in claim 8, it is characterised in that the transfer resource of the target spectrum sensing results includes：With
Provided in the transmission of the time resource/frequency resource for transmitting the target spectrum sensing results, and multiple target spectrum sensing results
It is orthogonal between source.
11. method as claimed in claim 10, it is characterised in that during periodicity collaborative spectrum sensing, the target
The transfer resource of frequency spectrum perception result also includes：The time cycle of transfer resource, and the time cycle of the transfer resource be equal to
The time cycle of collaborative spectrum sensing；Wherein, the time cycle of the transfer resource refers to that local sensing results are periodically reported
The time cycle of used transfer resource.
12. method as claimed in claim 8, it is characterised in that the transmission means of the target spectrum sensing results includes：When
Local sensing results on the target spectrum are, it is necessary to be sent out on the transfer resource of the target spectrum sensing results when taking
Send the signal made an appointment；When the local sensing results on the target spectrum is the free time, it is not necessary to send signal.
13. method as claimed in claim 8, it is characterised in that when using centralized collaborative sensing, the sensing results connect
Receipts node is fusion center, if fusion center is base station equipment, and the sensing node is terminal device, the target spectrum sense
Knowing the transmission means of result includes：Power control information, the power control information is used to indicate that the terminal device reaches institute
State the target received power of base station equipment.
14. method as claimed in claim 8, it is characterised in that the sensing results bag that the sensing results receiving node is received
Include reception signal；Sensing results receiving node utilizes the perception knot received on the transfer resource of the target spectrum sensing results
Fruit determines the collaborative sensing result on the target spectrum, including：
The sensing results receiving node calculates being averaged for the reception signal on the transfer resource of the target spectrum sensing results
Power, and relatively more described mean power and pre-determined threshold；If the mean power is more than the pre-determined threshold, it is determined that cooperation
Sensing results are that the target spectrum is occupied；If the mean power is not more than the pre-determined threshold, it is determined that cooperation sense
Know that result is idle for the target spectrum.
15. method as claimed in claim 8, it is characterised in that the sensing results bag that the sensing results receiving node is received
Include reception signal；Sensing results receiving node utilizes the perception knot received on the transfer resource of the target spectrum sensing results
Fruit determines the collaborative sensing result on the target spectrum, including：
If step A, fusion criterion are Or criterions, and local sense of the sensing results receiving node on the target spectrum
It is occupancy to know result, then the sensing results receiving node determines that collaborative sensing result is occupied for the target spectrum, and ties
Line journey；Otherwise, step B is performed；
Step B, the sensing results receiving node calculate the reception signal on the transfer resource of the target spectrum sensing results
Mean power, and the relatively mean power and pre-determined threshold；If the mean power is more than the pre-determined threshold, it is determined that
Collaborative sensing result is that the target spectrum is occupied；If the mean power is not more than the pre-determined threshold, it is determined that cooperation
Sensing results are that the target spectrum is idle.
16. the method as described in claims 14 or 15, it is characterised in that
When the fusion criterion that the sensing results receiving node is used is Or criterion, the pre-determined threshold is based on described perceive and tied
The noise power of fruit receiving node is configured；Or,
When using centralized collaborative sensing, the sensing results receiving node is fusion center, and if fusion center is base
Station equipment, the sensing node is terminal device, then when the transmission means of the target spectrum sensing results includes Power Control
During information, the fusion criterion used according to the power control information and the sensing results receiving node sets described default
Thresholding.
17. method as claimed in claim 8, it is characterised in that when using centralized collaborative sensing, the sensing results connect
Receipts node is fusion center, if fusion center is base station equipment, the sensing node is terminal device, and the sensing results connect
The transfer resource and transmission means for target spectrum sensing results of being made an appointment between node and sensing node are received, including：
The base station equipment is by system information or dedicated signaling by the transfer resource and biography of the target spectrum sensing results
Defeated mode is notified to the terminal device；Or,
The base station equipment is by frequency spectrum perception request message by the transfer resource of the target spectrum sensing results and transmission side
Formula is notified to the terminal device.
18. a kind of sensing node, it is characterised in that including：
Arrange unit, transfer resource and biography for target spectrum sensing results of being made an appointment between sensing results receiving node
Defeated mode；Wherein, target spectrum sensing results are provided by agreement static state between sensing node and sensing results receiving node
Transfer resource and transmission means；Or, between sensing node and sensing results receiving node by information/Signalling exchange dynamic about
The transfer resource and transmission means of the frequency spectrum perception that sets the goal result；
Transmitting element, connects for the transfer resource using the target spectrum sensing results and transmission means to the sensing results
Receive the local sensing results on the node transmission target spectrum；Wherein, if the sensing node has multiple mesh to be perceived
Frequency spectrum is marked, then the sensing node is transmitted and is directed to respectively using the transfer resource of each target spectrum sensing results with transmission means
The local sensing results of the target spectrum.
19. sensing node as claimed in claim 18, it is characterised in that for same target spectrum, all sensing nodes
The transfer resource for identical target spectrum sensing results of being made an appointment between agreement unit and sensing results receiving node and transmission
Mode.
20. sensing node as claimed in claim 18, it is characterised in that the transfer resource bag of the target spectrum sensing results
Include：Time resource/frequency resource for transmitting the target spectrum sensing results, and the biography of multiple target spectrum sensing results
It is orthogonal between defeated resource；And,
During periodicity collaborative spectrum sensing, the transfer resource of the target spectrum sensing results also includes：Transfer resource
Time cycle, and the transfer resource time cycle be equal to collaborative spectrum sensing time cycle；Wherein, the transmission money
The time cycle in source refers to that local sensing results periodically report the time cycle of used transfer resource.
21. sensing node as claimed in claim 18, it is characterised in that the transmission means bag of the target spectrum sensing results
Include：When the local sensing results on the target spectrum is take, it is necessary to be provided in the transmission of the target spectrum sensing results
The signal made an appointment is sent on source；When the local sensing results on the target spectrum is the free time, it is not necessary to send signal；
The transmitting element, specifically for obtaining the local sensing results on the target spectrum；When on the target spectrum
When local sensing results is take, to the sensing results receiving node on the transfer resource of the target spectrum sensing results
Send the signal made an appointment；When the local sensing results on the target spectrum is the free time, any signal is not sent.
22. sensing node as claimed in claim 18, it is characterised in that when using centralized collaborative sensing, sensing results
Receiving node is fusion center, if fusion center is base station equipment, sensing node is terminal device, and the target spectrum is perceived
As a result transmission means includes power control information, and the power control information is used to indicate that the terminal device arrival is described
The target received power of base station equipment；
The transmitting element, specifically for determining the local sensing results on the target spectrum according to the power control information
Transmit power, and using the transmit power on the transfer resource of the target spectrum sensing results to the base station equipment
Send the local sensing results on the target spectrum.
23. sensing node as claimed in claim 18, it is characterised in that when using centralized collaborative sensing, the perception
As a result receiving node is fusion center, if fusion center is base station equipment, and the sensing node is terminal device；The agreement
Unit, the target spectrum notified specifically for receiving the base station equipment by system information or dedicated signaling, which is perceived, to be tied
The transfer resource and transmission means of fruit；Or, receive the mesh that the base station equipment is notified by frequency spectrum perception request message
Mark the transfer resource and transmission means of frequency spectrum perception result.
24. a kind of sensing results receiving node, it is characterised in that including：
Arrange unit, transfer resource and transmission means for target spectrum sensing results of being made an appointment between sensing node；
Wherein, the transfer resource of target spectrum sensing results is provided between sensing node and sensing results receiving node by agreement static state
With transmission means；Or, dynamically about set the goal frequently by information/Signalling exchange between sensing node and sensing results receiving node
Compose the transfer resource and transmission means of sensing results；
Receiving unit, the mesh is utilized for receiving the sensing node on the transfer resource of the target spectrum sensing results
Mark the local sensing results on the transfer resource of frequency spectrum perception result and the target spectrum of transmission means transmission；Wherein, if
The sensing node has multiple target spectrums to be perceived, then the sensing node utilizes each target spectrum sensing results
Transfer resource transmits the local sensing results for the target spectrum with transmission means respectively；
Determining unit, it is described for being determined using the sensing results received on the transfer resource of the target spectrum sensing results
Collaborative sensing result on target spectrum.
25. sensing results receiving node as claimed in claim 24, it is characterised in that for same target spectrum, perceives knot
The transmission money for identical target spectrum sensing results of being made an appointment between agreement unit and all sensing nodes of fruit receiving node
Source and transmission means.
26. sensing results receiving node as claimed in claim 24, it is characterised in that the biography of the target spectrum sensing results
Defeated resource includes：Time resource/frequency resource for transmitting the target spectrum sensing results, and the perception of multiple target spectrums
As a result it is orthogonal between transfer resource；And,
During periodicity collaborative spectrum sensing, the transfer resource of the target spectrum sensing results also includes：Transfer resource
Time cycle, and the transfer resource time cycle be equal to collaborative spectrum sensing time cycle；Wherein, the transmission money
The time cycle in source refers to that local sensing results periodically report the time cycle of used transfer resource.
27. sensing results receiving node as claimed in claim 24, it is characterised in that the biography of the target spectrum sensing results
Defeated mode includes：When the local sensing results on the target spectrum is take, it is necessary in the target spectrum sensing results
Transfer resource on send the signal made an appointment；When the local sensing results on the target spectrum is the free time, it is not necessary to
Send signal；
When using centralized collaborative sensing, the sensing results receiving node is fusion center, if fusion center is base station
Equipment, the sensing node is terminal device, and the transmission means of the target spectrum sensing results includes：Power control information,
The power control information is used for the target received power for indicating that the terminal device reaches the base station equipment.
28. sensing results receiving node as claimed in claim 24, it is characterised in that the sensing results receiving node is received
Sensing results include receive signal；
The determining unit, specifically for being averaged for the reception signal on the transfer resource of the calculating target spectrum sensing results
Power, and relatively more described mean power and pre-determined threshold；If the mean power is more than the pre-determined threshold, it is determined that cooperation
Sensing results are that the target spectrum is occupied；If the mean power is not more than the pre-determined threshold, it is determined that cooperation sense
Know that result is idle for the target spectrum.
29. sensing results receiving node as claimed in claim 24, it is characterised in that the sensing results receiving node is received
Sensing results include receive signal；
The determining unit, if it were Or criterions specifically for fusion criterion, and the sensing results receiving node would be in the mesh
Mark the local sensing results on frequency spectrum to take, it is determined that collaborative sensing result is that the target spectrum is occupied；Otherwise, calculate
The mean power of reception signal on the transfer resource of the target spectrum sensing results, and relatively more described mean power is with presetting
Thresholding；If the mean power is more than the pre-determined threshold, determine that collaborative sensing result is occupied for the target spectrum；Such as
Really described mean power is not more than the pre-determined threshold, determines that collaborative sensing result is idle for the target spectrum.
30. the sensing results receiving node as described in claim 28 or 29, it is characterised in that
When the fusion criterion that the sensing results receiving node is used is Or criterion, the pre-determined threshold is based on described perceive and tied
The noise power of fruit receiving node is configured；Or,
When using centralized collaborative sensing, the sensing results receiving node is fusion center, and if fusion center is base
Station equipment, the sensing node is terminal device, then when the transmission means of the target spectrum sensing results includes Power Control
During information, the fusion criterion used according to the power control information and the sensing results receiving node sets described default
Thresholding.
31. sensing results receiving node as claimed in claim 24, it is characterised in that when using centralized collaborative sensing,
The sensing results receiving node is fusion center, if fusion center is base station equipment, and the sensing node is terminal device；
The agreement unit, specifically for by system information or dedicated signaling by the transfer resource of the target spectrum sensing results
Notified with transmission means to the terminal device；Or, by frequency spectrum perception request message by the target spectrum sensing results
Transfer resource and transmission means notify to the terminal device.
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