CN105517039A - Data transmission control method and device in cognitive network - Google Patents

Abstract

The embodiment of the invention provides a data transmission control method and device in a cognitive network relating to the communication field. According to the invention, the throughput rate of master user equipment and the throughput rate of cognitive user equipment can be effectively improved, and simultaneously the interference between the master user equipment and the cognitive user equipment is reduced. The method comprises: S1, obtaining a first type throughput rate of the master user equipment occupying an authorized frequency band with detection state of busyness; S2, determining first type master user equipment with the first type throughput rate less than a preset throughput rate from all the master user equipment occupying the authorized frequency band; S3, according to a data transmission strategy, determining the cognitive user equipment in the cognitive network as a relay node to which the first type master user equipment transmits data; S4, sending a first notification message to the first type master user equipment, sending a second notification message to the cognitive user equipment, traversing other first type master user equipment, repeatedly executing S3-S4. The method and the device of the invention are used for improving the throughput rate.

Description

Data transfer control method and device in a kind of cognition network

Technical field

The present invention relates to the communications field, particularly relate to data transfer control method and device in a kind of cognition network.

Background technology

Cognition network comprises primary user's network and cognitive user network, and primary user's network comprises primary user device, and cognitive user network comprises cognitive user equipment.Usual cognition network adopts the mode of identical networking, namely primary user's network and cognitive user network share the whole frequency spectrum resource licensing to primary user's network, in this type of networking plan, primary user's network base station (eNB) of adjusting the distance is comparatively far away and from the primary user device of the primary user's network close to cognitive user network base station (SC-AP), easily be subject to the strong descending interference of cognitive user network base station, the throughput of primary user device is lower; Simultaneously, because the transmitting power of cognitive user network base station is generally much smaller than the transmitting power of primary user's network base station, primary user's network base station easily causes strong descending interference to the cognitive user equipment of cognitive user network, and the throughput of cognitive user equipment is lower.

Summary of the invention

Embodiments of the invention provide data transfer control method and device in a kind of cognition network, effectively can improve the throughput of primary user device, and the throughput of cognitive user equipment, reduce the interference between primary user device and cognitive user equipment simultaneously.

For achieving the above object, embodiments of the invention adopt following technical scheme:

First aspect, provides data transfer control method in a kind of cognition network, comprising:

S1, acquisition take the first kind throughput that detected state is each primary user device of the mandate frequency range of " doing ";

S2, from all primary user device taking described mandate frequency range, determine that described first kind throughput is less than the first kind primary user device of default throughput, can be the subscriber equipment being in primary user's network edge, this first kind primary user device can be multiple;

S3, determine according to data transmission policies the via node cognitive user equipment in cognitive user network being carried out transfer of data as described first kind primary user device;

S4, send the first notification message to described first kind primary user device, and send the second notification message to described cognitive user equipment, described first notification message is used to indicate described first kind primary user device and described cognitive user equipment is carried out transfer of data as via node, the described mandate frequency range that described second notification message is used to indicate first kind primary user device use described in described cognitive user equipment use carries out transfer of data, travel through first kind primary user device described in other and repeat S3-S4, until all first kind primary user device traversal is complete.

Data transfer control method in the cognition network that above-mentioned first aspect provides, first, determine the first kind primary user device taking the mandate frequency range that detected state is " doing ", this first kind primary user device is the subscriber equipment that first kind throughput is less than default throughput, then, according to data transmission policies, the cognitive user equipment in cognitive user network is defined as the via node that described first kind primary user device carries out transfer of data, improve the throughput of primary user device, simultaneously, the described mandate frequency range that first kind primary user device described in described cognitive user equipment use can be made to use carries out transfer of data, improve the throughput of cognitive user equipment, reduce the interference between primary user device and cognitive user equipment simultaneously.

Second aspect, provides data transfer controller in a kind of cognition network, comprising:

Acquiring unit, for when authorizing the detected state of frequency range for " doing " in primary user's network, obtains the first kind throughput taking each primary user device of described mandate frequency range;

Processing unit, for determining that described first kind throughput is less than at least one first kind primary user device of default throughput from all primary user device taking described mandate frequency range;

Described processing unit, also for determining the via node cognitive user equipment in cognitive user network being carried out transfer of data as described first kind primary user device according to data transmission policies, described data transmission policies is used for the via node used when first kind primary user device carries out transfer of data described in decision-making;

Transmitting element, for sending the first notification message to described first kind primary user device, and send the second notification message to described cognitive user equipment, described first notification message is used to indicate described first kind primary user device and described cognitive user equipment is carried out transfer of data as via node, the described mandate frequency range that described second notification message is used to indicate first kind primary user device use described in described cognitive user equipment use carries out transfer of data, travels through first kind primary user device described in other.

Data transfer controller in the cognition network that above-mentioned second aspect provides, first, determine the first kind primary user device taking the mandate frequency range that detected state is " doing ", this first kind primary user device is the subscriber equipment that first kind throughput is less than default throughput, then, according to data transmission policies, the cognitive user equipment in cognitive user network is defined as the via node that described first kind primary user device carries out transfer of data, improve the throughput of primary user device, simultaneously, the described mandate frequency range that first kind primary user device described in described cognitive user equipment use can be made to use carries out transfer of data, improve the throughput of cognitive user equipment, reduce the interference between primary user device and cognitive user equipment simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

A kind of LTE alloisomerism network architecture schematic diagram that Fig. 1 provides for prior art;

A kind of LTE alloisomerism network architecture schematic diagram that Fig. 2 provides for the embodiment of the present invention;

Data transfer control method flow chart in a kind of cognition network that Fig. 3 provides for the embodiment of the present invention;

Data transfer control method flow chart in the another kind of cognition network that Fig. 4 provides for the embodiment of the present invention;

Data transfer control method flow chart in another cognition network that Fig. 5 provides for the embodiment of the present invention;

Data transfer control method flow chart in another cognition network that Fig. 6 provides for the embodiment of the present invention;

Data transfer controller structural representation in a kind of cognition network that Fig. 7 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

General principle of the present invention is: primary user device is used and authorized frequency range to carry out transfer of data to cognitive user equipment, the return obtained is the via node that cognitive user equipment can be used as that oneself carries out transfer of data, thus improve the throughput of primary user device, and the throughput of cognitive user equipment.

Cognition network comprises primary user's network and cognitive user network, concrete can be Long Term Evolution (English full name: LongTermEvolution, English abbreviation: LTE) alloisomerism network, wherein, primary user's network is also called macrocellular network (Macrocell), and cognitive user network is also called microcellulor network (Smallcell).Prior art provides a kind of LTE alloisomerism network architecture schematic diagram, as shown in Figure 1, comprise core net, primary user's network and cognitive user network, primary user's network comprises primary user's network base station and multiple primary user device (PU), primary user's network base station can be NodeB or eNB, cognitive user network comprises a cognitive user network base station (SC-AP) and multiple cognitive user equipment (SU), and cognitive user network base station can be WIFI access point or relaying (Relay).Usually, primary user's network and cognitive user network adopt the mode of identical networking, and namely primary user's network and cognitive user network share the whole frequency spectrum resource licensing to primary user's network.Primary user device can use authority frequency range arbitrarily, and cognitive user equipment can adopt cognitive radio technology, the detected state of the mandate frequency range of monitoring primary user device, when the detected state of described mandate frequency range is " spare time ", frequency range is authorized to carry out transfer of data described in cognitive user equipment use, when the detected state of described mandate frequency range is " hurrying ", the unauthorized frequency range of cognitive user equipment use carries out transfer of data.

But, the frequency spectrum resource utilization rate of prior art is relatively low, and primary user's network base station (eNB) of adjusting the distance is comparatively far away and from the primary user device of the primary user's network close to cognitive user network base station (SC-AP), easily be subject to the strong descending interference of cognitive user network base station, the throughput of primary user device is lower; Simultaneously, because the transmitting power of cognitive user network base station is generally much smaller than the transmitting power of primary user's network base station, primary user's network base station easily causes strong descending interference to the cognitive user equipment of cognitive user network, and the throughput of cognitive user equipment is lower.

The invention provides a kind of LTE alloisomerism network architecture schematic diagram, as shown in Figure 2, comprise core net, data transfer controller, primary user's network and cognitive user network, primary user's network comprises base station and primary user device (PU), base station can be NodeB or eNB, and cognitive user network comprises base station (SC-AP) and cognitive user equipment (SU).Data transfer controller performs data transfer control method step in the cognition network described in embodiment one, primary user device is used and authorizes frequency range to carry out transfer of data to cognitive user equipment, the return obtained is the via node that cognitive user equipment can be used as that oneself carries out transfer of data, thus improve the throughput of primary user device, and the throughput of cognitive user equipment.

Embodiment one

The embodiment of the present invention provides data transfer control method in a kind of cognition network, as shown in Figure 3, comprising:

Step 101, when authorizing the detected state of frequency range for " hurry " in primary user's network, data transfer controller obtains the first kind throughput of each primary user device taking mandate frequency range.

First, data transfer controller obtains the detected state of each mandate frequency range in primary user's network.

Suppose there is N number of mandate frequency range (Band_1 ~ Band_N), data transfer controller is intercepted N number of mandate frequency range, monitor each to authorize and whether frequency range has primary user device to take authorize frequency range to carry out transfer of data, obtain the detected state of the mandate frequency range in primary user's network.Described mandate frequency range is the frequency range that base station (eNB) in primary user's network licenses to primary user device, makes use authority frequency range to carry out transfer of data between primary user device, described N be more than or equal to 1 integer.

Detected state comprises " hurrying " and " spare time ", and described " hurrying " expression exists transfer of data in mandate frequency range, and described " spare time " expression does not exist transfer of data in mandate frequency range.

The invention process example assumes primary user device takies authorizes frequency range Band_n to carry out transfer of data, and the detected state of the mandate frequency range Band_n that data transfer controller obtains in primary user's network is " hurrying ".

Then, data transfer controller obtains the first kind throughput taking each primary user device of authorizing frequency range Band_n according to the first formula, now primary user device is as the unique subscriber equipment of authorizing on frequency range Band_n, do not consider that other disturb, first kind throughput is that described primary user device resides in described primary user's network, takies the throughput that described mandate frequency range Band_n carries out transfer of data.

Described first formula is:

$T_{PU\_n}={\mathrm{Blog}}_2\[1+\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}}{N_{0}B}\]$

Wherein, T _{pU_n}represent the first kind throughput of primary user device, B represents the channel width of authorizing frequency range, N ₀represent noise power spectral density, N ₀b represents noise power, P _nodeBrepresent the transmitting power of primary user's network base station, represent the channel gain of primary user's network base station to primary user device, represent the signal power of primary user's network base station to primary user device.

Step 102, data transfer controller determine that first kind throughput is less than at least one first kind primary user device of default throughput from all primary user device taking mandate frequency range.

Data transfer controller obtains the first kind throughput taking each primary user device of authorizing frequency range Band_n, judge whether the first kind throughput of each primary user device is less than default throughput, when the first kind throughput of primary user device is more than or equal to default throughput, prove the better performances such as throughput and signal of this primary user device, can continue to use this mandate frequency range Band_n to carry out transfer of data; When the first kind throughput of primary user device is less than default throughput, prove the poor-performings such as the throughput of this primary user device and signal, perform step 103.

It should be noted that, default throughput can the situation of the real network such as position of community residing for the priority of the size of the size of network, lane place, subscriber equipment and subscriber equipment be arranged.First kind primary user device, for residing in primary user's network, takies the primary user device that the throughput of authorizing frequency range Band_n to carry out transfer of data is less than default throughput.

Step 103, data transfer controller determine according to data transmission policies the via node cognitive user equipment in cognitive user network being carried out transfer of data as first kind primary user device.

Described data transmission policies is used for the via node used when first kind primary user device carries out transfer of data described in decision-making.

Step 104, data transfer controller send the first notification message to first kind primary user device.

Described first notification message is used to indicate described first kind primary user device and described cognitive user equipment is carried out transfer of data as via node.

Step 105, data transfer controller send the second notification message to cognitive user equipment.

The described mandate frequency range Band_n that described second notification message is used to indicate first kind primary user device use described in described cognitive user equipment use carries out transfer of data.

Travel through first kind primary user device described in other and repeat 103 to step 105.

Data transfer control method in the cognition network that the embodiment of the present invention provides, first, determine the first kind primary user device taking the mandate frequency range that detected state is " doing ", this first kind primary user device is the subscriber equipment that first kind throughput is less than default throughput, then, according to data transmission policies, the cognitive user equipment in cognitive user network is defined as the via node that described first kind primary user device carries out transfer of data, improve the throughput of primary user device, simultaneously, the described mandate frequency range that first kind primary user device described in described cognitive user equipment use can be made to use carries out transfer of data, improve the throughput of cognitive user equipment, reduce the interference between primary user device and cognitive user equipment simultaneously.

Based on Fig. 3 as shown in Figure 4, described method specifically comprises the following steps.

After step 102, described method also comprises step 106.

Step 106, data transfer controller, according to the priority of each first kind primary user device, sort to each first kind primary user device.

The priority of primary user device can be the grade of service of operator to user, and the grade of service comprises " gold medal ", " silver medal " and " bronze medal ".The corresponding high priority of " gold medal " grade of service, the corresponding medium priority of " silver medal " grade of service, the corresponding low priority of " bronze medal " grade of service.

It should be noted that, for the primary user device with identical priority, the difference of the first kind throughput of default throughput and primary user device can be adopted, sort.Namely when difference less, priority is higher.

Step 103 specifically comprises step 1031 to step 1038.Step 104 specifically comprises step 1041 to step 1042.Step 105 specifically comprises step 1051 to step 1052.

Step 1031, data transfer controller reside in primary user's network with the first kind primary user device that priority is the highest, each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as the first kind primary user device that priority is the highest, obtain each Equations of The Second Kind throughput of the highest first kind primary user device of priority according to the second formula.

Equations of The Second Kind throughput is that first kind primary user device resides in primary user's network, the cognitive user equipment in cognitive user network is carried out the throughput of the via node of transfer of data as first kind primary user device.Now, need consider from the interference of cognitive user network base station to first kind primary user device.

Described second formula is:

$T_{PU\_n}(SU\_m)=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{NodeB}\·h_{NodeB}^{SU\_m}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{SU\_m}},\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{PU\_n}}\}\]$

Wherein, T _{pU_n}(SU_m) the Equations of The Second Kind throughput of primary user device is represented, represent the channel gain of primary user's network base station to cognitive user equipment, represent the signal power of primary user's network base station to cognitive user equipment, P _sC-APrepresent the transmitting power of cognitive user network base station, represent the channel gain of cognitive user network base station to cognitive user equipment, represent the signal power of cognitive user network base station to cognitive user equipment, P _{sU_m}represent the transmitting power of cognitive user equipment, represent the channel gain of cognitive user equipment to primary user device, represent the signal power of cognitive user equipment to primary user device, represent the channel gain of cognitive user network base station to primary user device, represent the signal power of cognitive user network base station to primary user device.

Maximum Equations of The Second Kind throughput in all Equations of The Second Kind throughputs of step 1032, first kind primary user device that data transfer controller determination priority is the highest.

Described maximum Equations of The Second Kind throughput is the first cognitive user equipment when carrying out the via node of transfer of data as the first kind primary user device that priority is the highest, the Equations of The Second Kind throughput of the first kind primary user device that priority is the highest.First cognitive user equipment can be designated as SU_m'.

Step 1033, data transfer controller judge whether the maximum Equations of The Second Kind throughput of the first kind primary user device that priority is the highest is more than or equal to default throughput.

If when the maximum Equations of The Second Kind throughput of the first kind primary user device that priority is the highest is more than or equal to default throughput, perform step 1034; If when the maximum Equations of The Second Kind throughput of the first kind primary user device that priority is the highest is less than default throughput, perform step 1035.

Step 1034, data transfer controller determine that the first cognitive user equipment carries out the via node of transfer of data as the first kind primary user device that priority is the highest.

The first kind primary user device that priority is the highest resides in primary user's network, the via node that the first cognitive user equipment SU_m' in cognitive user network carries out transfer of data as the first kind primary user device that priority is the highest is carried out transfer of data, and the first cognitive user equipment SU_m' can use the mandate frequency range Band_n of the highest first kind primary user device of priority to carry out transfer of data simultaneously.

Step 1041, data transfer controller send the first notification message to the first kind primary user device that priority is the highest.

Described first notification message is used to indicate the highest first kind primary user device of priority and the first cognitive user equipment is carried out transfer of data as via node.

Step 1051, data transfer controller send the second notification message to the first cognitive user equipment.

The mandate frequency range Band_n that described second notification message is used to indicate the highest first kind primary user device use of the first cognitive user equipment use priority carries out transfer of data.

Based on Fig. 4 as shown in Figure 5, after step 1033, also comprise step 1035 to step 1038.

Step 1035, data transfer controller reside in cognitive user network with the first kind primary user device that priority is the highest, each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as the first kind primary user device that priority is the highest, obtain each 3rd class throughput of described first kind primary user device according to the 3rd formula.

3rd class throughput is that first kind primary user device resides in cognitive user network, the cognitive user equipment in cognitive user network is carried out the throughput of the via node of transfer of data as first kind primary user device.

Described 3rd formula is:

$T_{PU\_n}{(SU\_m)}^{\′}=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{SC-AP}\·h_{SC-AP}^{SU\_m}}{N_{0}B},\frac{P_{SC-AP}\·h_{SC-AP}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B}\}\]$

Wherein, T _{pU_n}(SU_m) the 3rd class throughput of ' expression primary user device.

Maximum 3rd class throughput in all 3rd class throughputs of step 1036, first kind primary user device that data transfer controller determination priority is the highest.

Described maximum 3rd class throughput is the second cognitive user equipment when carrying out the via node of transfer of data as the first kind primary user device that priority is the highest, the 3rd class throughput of the first kind primary user device that priority is the highest.Second cognitive user equipment is designated as SU_m ".

Step 1037, data transfer controller judge whether the maximum 3rd class throughput of the first kind primary user device that priority is the highest is more than or equal to default throughput.

If the maximum 3rd class throughput of the first kind primary user device that priority is the highest is more than or equal to default throughput, perform step 1038; If the maximum 3rd class throughput of the first kind primary user device that priority is the highest is less than default throughput, perform step 107.

Step 1038, data transfer controller determine that the second cognitive user equipment carries out the via node of transfer of data as the first kind primary user device that priority is the highest.

The first kind primary user device that priority is the highest resides in cognitive user network, the second cognitive user equipment SU_m using in cognitive user network " carry out the via node of transfer of data as the first kind primary user device that priority is the highest, the second cognitive user equipment SU_m simultaneously " the mandate frequency range Band_n of the highest first kind primary user device of priority can be used to carry out transfer of data.

Step 1042, data transfer controller send the first notification message to the first kind primary user device that priority is the highest.

Described first notification message is used to indicate the highest first kind primary user device of priority and the second cognitive user equipment is carried out transfer of data as via node.

Step 1052, data transfer controller send the second notification message to the second cognitive user equipment.

The mandate frequency range Band_n that described second notification message is used to indicate the highest first kind primary user device use of the second cognitive user equipment use priority carries out transfer of data.

Based on Fig. 5 as shown in Figure 6, after step 1037, also comprise step 107 to step 110.

Step 107, data transfer controller obtain when take the first kind throughput that arbitrary detected state is the first kind primary user device that the priority of the mandate frequency range in " spare time " is the highest.

Data transfer controller obtains according to the first formula and takies the first kind throughput that arbitrary detected state is the first kind primary user device that the priority of the mandate frequency range in " spare time " is the highest.The mandate frequency range that detected state is " spare time " can be designated as Band_n'.N' ≠ n, Band_n' are the mandate frequency range in one " spare time " of random selecting.

Step 108, data transfer controller obtain the first kind throughput taking and authorize first kind primary user device that the priority of frequency range is the highest, and take the first kind throughput sum that arbitrary detected state is the first kind primary user device that the priority of the mandate frequency range in " spare time " is the highest, obtain first and value.

First and value be:

T _{PU_n}＝T _{PU_n}(Band_n)+T _{PU_n}(Band_n')

Step 109, data transfer controller judge first and value be more than or equal to default throughput, determine that the highest first kind primary user device of priority uses detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " doing " to carry out transfer of data.

It should be noted that, judge first and value when being less than default throughput, the first kind primary user device that priority is the highest continues to use described detected state to be that the mandate frequency range Band_n of " hurrying " carries out transfer of data.

Step 110, data transfer controller send third notice message to the first kind primary user device that priority is the highest.

Described third notice message is used to indicate the highest first kind primary user device of priority and uses described detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " hurrying " to carry out transfer of data.

Data transfer controller travels through other first kind primary user device according to priority, performs the step described in Fig. 4 to Fig. 6.

It should be noted that, if the highest first kind primary user device of priority selects SU_m' as via node, then the first kind primary user device that a rear priority is low no longer considers SU_m'.In addition, for ensureing the fairness that other first kind primary user device access, PU_n can only use at most two to authorize frequency range.

For the cognitive user equipment not as via node, continue to reside in cognitive user network, use other unauthorized frequency ranges, such as WIFI frequency range, carry out transfer of data.

First formula of the present invention, the second formula and the 3rd formula, can with reference to the principles of prior art shannon formula according to the principle of shannon formula, and the present invention does not repeat them here.

First, determine the first kind primary user device taking the mandate frequency range that detected state is " doing ", this first kind primary user device is the subscriber equipment that first kind throughput is less than default throughput, then, according to data transmission policies, the cognitive user equipment in cognitive user network is defined as the via node that described first kind primary user device carries out transfer of data, improve the throughput of primary user device, simultaneously, the described mandate frequency range that first kind primary user device described in described cognitive user equipment use can be made to use carries out transfer of data, improve the throughput of cognitive user equipment, reduce the interference between primary user device and cognitive user equipment simultaneously.

Example, suppose that primary user's network comprises 1 NodeB, 10 primary user PU (PU_1 ~ PU_10).Cognitive user network comprises 1 SC_AP, 4 SU (SU_1 ~ SU_4).The available authorization frequency range of primary user's network is 10MHz, is divided into sub-channel Band_1 ~ Band_10 (every sub-channel is 1MHz), distributes to 10 primary user PU respectively and use, wherein 1 corresponding 1 sub-channel of PU.

1. data transfer controller carries out state-detection to mandate frequency range Band_1 ~ Band_10 all in primary user's network, and wherein, Band_2 is " spare time ", and namely PU_2 does not do business, and other channel states are " hurrying ".

2. calculate primary user PU_n (n ≠ 2) first kind throughput on " doing " channel Band_n (n ≠ 2) of correspondence wherein T _{pU_4}, T _{pU_5}and T _{pU_9}be less than default throughput, the priority of cognitive user network to be accessed is followed successively by PU_4, PU_9, PU_5 from high to low, and wherein, PU_4 is " gold medal " user.

3. for PU_4:

A) calculate PU_4 and reside in primary user's network, and by the Equations of The Second Kind throughput that each SU obtains for via node $T_{PU\_4}(SU\_m)=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{NodeB}\·h_{NodeB}^{SU\_m}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{SU\_m}},\frac{P_{NodeB}\·h_{NodeB}^{PU\_4}+P_{SU\_m}\·h_{SU\_m}^{PU\_4}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{PU\_4}}\}\],$ Wherein, SU_m transmits the via node of data as PU_4, and PU_4 and SU_m shares and authorizes frequency range Band_4.Obtain T _{pU_4}(SU_3) maximum, and T _{pU_4}(SU_3) default throughput is less than then perform 3b);

B) calculate PU_4 and access to cognitive user network, and by the 3rd class throughput that each SU obtains for via node $T_{PU\_4}{(SU\_m)}^{\′}=\frac{B}{2}{\log }_2\[1+\min \{\frac{P_{SC-AP}\·h_{SC-AP}^{SU\_m}}{N_{0}B},\frac{P_{SC-AP}\·h_{SC-AP}^{PU\_4}+P_{SU\_m}\·h_{SU\_m}^{PU\_4}}{N_{0}B}\}\],$ Wherein, SU_m transmits the via node of data as PU_4, and PU_4 and SU_m shares and authorizes frequency range Band_4.Obtain T _{pU_4}(SU_2) maximum, and T _{pU_4}(SU_2) default throughput is greater than then PU_4 accesses cognitive user network, and SU_2 is as the via node of PU_4 transfer of data, and PU_4 and SU_2 shares channel Band_4.

4. for PU_9:

A) calculate PU_9 and reside in primary user's network, and by the Equations of The Second Kind throughput that each SU (m ≠ 2) obtains for via node.Obtain T _{pU_9}(SU_1) maximum, and T _{pU_9}(SU_1) default throughput is greater than then PU_9 still resides in primary user's network, and SU_1 is as the via node of PU_9 transfer of data, and PU_9 and SU_1 shares channel Band_9.

5. for PU_5:

A) calculate PU_5 and reside in primary user's network, and by the Equations of The Second Kind throughput that each SU (m ≠ 1,2) obtains for via node.Obtain T _{pU_5}(SU_4) maximum, and T _{pU_5}(SU_4) threshold value is less than then perform 5b);

B) calculate PU_5 and access to cognitive user network, and by the 3rd class throughput that each SU (m ≠ 1,2) obtains for via node.Obtain T _{pU_5}(SU_3) maximum, and T _{pU_5}(SU_3) still threshold value is less than then perform 5c);

C) PU_5 attempts access " spare time " channel Band_2: calculate PU_5 and reside in the first kind throughput T simultaneously using Band_5 and Band_2 in primary user's network _{pU_5}=T _{pU_5}(Band_5)+T _{pU_5}(Band_2).Obtain T _{pU_5}be greater than default throughput then PU_5 still resides in primary user's network, uses Band_5 and Band_2 to carry out transfer of data.

In sum, PU_4 accesses cognitive user network, and SU_2 is as the via node of PU_4 transfer of data, and PU_4 and SU_2 shares channel Band_4; PU_9 still resides in primary user's network, and SU_1 is as the via node of PU_9 transfer of data, and PU_9 and SU_1 shares channel Band_9; PU_5 still resides in primary user's network, uses Band_5 and Band_2 to carry out transfer of data; SU_3 and SU_4 continues to reside in cognitive user network, uses other unauthorized frequency ranges (such as WIFI frequency range) to carry out transfer of data.

Embodiment two

The embodiment of the present invention provides data transfer controller 20 in a kind of cognition network, as shown in Figure 7, comprising:

Acquiring unit 201, for when authorizing the detected state of frequency range for " doing " in primary user's network, obtains the first kind throughput taking each primary user device of described mandate frequency range;

Processing unit 202, for determining that described first kind throughput is less than at least one first kind primary user device of default throughput from all primary user device taking described mandate frequency range;

Described processing unit 202, also for determining the via node cognitive user equipment in cognitive user network being carried out transfer of data as described first kind primary user device according to data transmission policies, described data transmission policies is used for the via node used when first kind primary user device carries out transfer of data described in decision-making;

Transmitting element 203, for sending the first notification message to described first kind primary user device, and send the second notification message to described cognitive user equipment, described first notification message is used to indicate described first kind primary user device and described cognitive user equipment is carried out transfer of data as via node, the described mandate frequency range that described second notification message is used to indicate first kind primary user device use described in described cognitive user equipment use carries out transfer of data, travels through first kind primary user device described in other.

First, determine the first kind primary user device taking the mandate frequency range that detected state is " doing ", this first kind primary user device is the subscriber equipment that first kind throughput is less than default throughput, then, according to data transmission policies, the cognitive user equipment in cognitive user network is defined as the via node that described first kind primary user device carries out transfer of data, improve the throughput of primary user device, simultaneously, the described mandate frequency range that first kind primary user device described in described cognitive user equipment use can be made to use carries out transfer of data, improve the throughput of cognitive user equipment, reduce the interference between primary user device and cognitive user equipment simultaneously.

Described acquiring unit 201 specifically for:

Obtain the first kind throughput taking each primary user device of described mandate frequency range according to the first formula, described first formula is:

$T_{PU\_n}={\mathrm{Blog}}_2\[1+\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}}{N_{0}B}\]$

Wherein, T _{pU_n}represent the first kind throughput of primary user device, B represents the channel width of authorizing frequency range, N ₀represent noise power spectral density, N ₀b represents noise power, P _nodeBrepresent the transmitting power of primary user's network base station, represent the channel gain of primary user's network base station to primary user device, represent the signal power of primary user's network base station to primary user device.

Described processing unit 202 specifically for:

When described first kind primary user device resides in described primary user's network, when each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as described first kind primary user device, obtain each Equations of The Second Kind throughput of described first kind primary user device according to the second formula, described second formula is:

$T_{PU\_n}(SU\_m)=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{NodeB}\·h_{NodeB}^{SU\_m}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{SU\_m}},\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{PU\_n}}\}\]$

Wherein, T _{pU_n}(SU_m) the Equations of The Second Kind throughput of primary user device is represented, represent the channel gain of primary user's network base station to cognitive user equipment, represent the signal power of primary user's network base station to cognitive user equipment, P _sC-APrepresent the transmitting power of cognitive user network base station, represent the channel gain of cognitive user network base station to cognitive user equipment, represent the signal power of cognitive user network base station to cognitive user equipment, P _{sU_m}represent the transmitting power of cognitive user equipment, represent the channel gain of cognitive user equipment to primary user device, represent the signal power of cognitive user equipment to primary user device, represent the channel gain of cognitive user network base station to primary user device, represent the signal power of cognitive user network base station to primary user device;

Determine maximum Equations of The Second Kind throughput in all Equations of The Second Kind throughputs of described first kind primary user device, described maximum Equations of The Second Kind throughput is the first cognitive user equipment when carrying out the via node of transfer of data as described first kind primary user device, the Equations of The Second Kind throughput of described first kind primary user device;

When the maximum Equations of The Second Kind throughput of described first kind primary user device is more than or equal to described default throughput, determine that described first cognitive user equipment carries out the via node of transfer of data as described first kind primary user device;

When the maximum Equations of The Second Kind throughput of described first kind primary user device is less than described default throughput, described first kind primary user device resides in described cognitive user network, each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as described first kind primary user device, obtain each 3rd class throughput of described first kind primary user device according to the 3rd formula, described 3rd formula is:

$T_{PU\_n}{(SU\_m)}^{\′}=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{SC-AP}\·h_{SC-AP}^{SU\_m}}{N_{0}B},\frac{P_{SC-AP}\·h_{SC-AP}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B}\}\]$

Wherein, T _{pU_n}(SU_m) the 3rd class throughput of ' expression primary user device;

Determine maximum 3rd class throughput in all 3rd class throughputs of described first kind primary user device, described maximum 3rd class throughput is the second cognitive user equipment when carrying out the via node of transfer of data as described first kind primary user device, the 3rd class throughput of described first kind primary user device;

When the maximum 3rd class throughput of described first kind primary user device is more than or equal to described default throughput, determine that described second cognitive user equipment carries out the via node of transfer of data as described first kind primary user device.

When the maximum 3rd class throughput of described first kind primary user device is less than described default throughput,

Described acquiring unit 201, also for obtaining when taking the first kind throughput that arbitrary detected state is the described first kind primary user device of the mandate frequency range in " spare time ";

Described acquiring unit 201, also for taking the first kind throughput of the described first kind primary user device of described mandate frequency range described in obtaining, and described in take the first kind throughput sum that arbitrary detected state is the described first kind primary user device of the mandate frequency range in " spare time ", obtain first and value;

Described processing unit 202, also for when described first and value be more than or equal to described default throughput, determine that described first kind primary user device uses described detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " doing " to carry out transfer of data;

Described transmitting element 203, also for sending third notice message to described first kind primary user device, described third notice message is used to indicate described first kind primary user device and uses described detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " hurrying " to carry out transfer of data.

Described processing unit 202, also for the priority according to each described first kind primary user device, sorts to each described first kind primary user device.

In actual applications, in cognition network, data transfer controller 20 comprises acquiring unit, processing unit and transmitting element can be that spectrum allocation may and user access control center perform data transfer control method of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the device of foregoing description and the specific works process of unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims (10)

1. a data transfer control method in cognition network, is characterized in that, comprising:

S1, when authorizing the detected state of frequency range for " hurry " in primary user's network, acquisition takies the first kind throughput of each primary user device of described mandate frequency range;

S2, from all primary user device taking described mandate frequency range, determine that described first kind throughput is less than at least one first kind primary user device of default throughput;

S3, determine according to data transmission policies the via node cognitive user equipment in cognitive user network being carried out transfer of data as described first kind primary user device, described data transmission policies is used for the via node used when first kind primary user device carries out transfer of data described in decision-making;

S4, send the first notification message to described first kind primary user device, and send the second notification message to described cognitive user equipment, described first notification message is used to indicate described first kind primary user device and described cognitive user equipment is carried out transfer of data as via node, the described mandate frequency range that described second notification message is used to indicate first kind primary user device use described in described cognitive user equipment use carries out transfer of data, travels through first kind primary user device described in other and repeats S3-S4.

2. method according to claim 1, is characterized in that, the first kind throughput that described acquisition takies each primary user device of described mandate frequency range comprises:

Obtain the first kind throughput taking each primary user device of described mandate frequency range according to the first formula, described first formula is:

$T_{PU\_n}={\mathrm{Blog}}_2\[1+\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}}{N_{0}B}\]$

Wherein, T _{pU_n}represent the first kind throughput of primary user device, B represents the channel width of authorizing frequency range, N ₀represent noise power spectral density, N ₀b represents noise power, P _nodeBrepresent the transmitting power of primary user's network base station, represent the channel gain of primary user's network base station to primary user device, represent the signal power of primary user's network base station to primary user device.

3. method according to claim 2, is characterized in that, describedly determines that the via node using the cognitive user equipment in cognitive user network carries out transfer of data as described first kind primary user device comprises according to data transmission policies:

When described first kind primary user device resides in described primary user's network, when each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as described first kind primary user device, obtain each Equations of The Second Kind throughput of described first kind primary user device according to the second formula, described second formula is:

$T_{PU\_n}(SU\_m)=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{NodeB}\·h_{NodeB}^{PU\_m}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{SU\_m}},\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{PU\_n}}\}\]$

Wherein, T _{pU_n}(SU_m) the Equations of The Second Kind throughput of primary user device is represented, represent the channel gain of primary user's network base station to cognitive user equipment, represent the signal power of primary user's network base station to cognitive user equipment, P _sC-APrepresent the transmitting power of cognitive user network base station, represent the channel gain of cognitive user network base station to cognitive user equipment, represent the signal power of cognitive user network base station to cognitive user equipment, P _{sU_m}represent the transmitting power of cognitive user equipment, represent the channel gain of cognitive user equipment to primary user device, represent the signal power of cognitive user equipment to primary user device, represent the channel gain of cognitive user network base station to primary user device, represent the signal power of cognitive user network base station to primary user device;

Determine maximum Equations of The Second Kind throughput in all Equations of The Second Kind throughputs of described first kind primary user device, described maximum Equations of The Second Kind throughput is the first cognitive user equipment when carrying out the via node of transfer of data as described first kind primary user device, the Equations of The Second Kind throughput of described first kind primary user device;

When the maximum Equations of The Second Kind throughput of described first kind primary user device is more than or equal to described default throughput, determine that described first cognitive user equipment carries out the via node of transfer of data as described first kind primary user device;

When the maximum Equations of The Second Kind throughput of described first kind primary user device is less than described default throughput, described first kind primary user device resides in described cognitive user network, each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as described first kind primary user device, obtain each 3rd class throughput of described first kind primary user device according to the 3rd formula, described 3rd formula is:

$T_{PU\_n}{(SU\_m)}^{\′}=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{SC-AP}\·h_{SC-AP}^{SU\_m}}{N_{0}B},\frac{P_{SC-AP}\·h_{SC-AP}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B}\}\]$

Wherein, T _{pU_n}(SU_m) the 3rd class throughput of ' expression primary user device;

Determine maximum 3rd class throughput in all 3rd class throughputs of described first kind primary user device, described maximum 3rd class throughput is the second cognitive user equipment when carrying out the via node of transfer of data as described first kind primary user device, the 3rd class throughput of described first kind primary user device;

When the maximum 3rd class throughput of described first kind primary user device is more than or equal to described default throughput, determine that described second cognitive user equipment carries out the via node of transfer of data as described first kind primary user device.

4. method according to claim 3, is characterized in that, when the maximum 3rd class throughput of described first kind primary user device is less than described default throughput, described method also comprises:

Obtain when taking the first kind throughput that arbitrary detected state is the described first kind primary user device of the mandate frequency range in " spare time ";

Take the first kind throughput of the described first kind primary user device of described mandate frequency range described in acquisition, and described in take the first kind throughput sum that arbitrary detected state is the described first kind primary user device of the mandate frequency range in " spare time ", obtain first and value;

When described first and value be more than or equal to described default throughput, determine that described first kind primary user device uses described detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " doing " to carry out transfer of data;

Send third notice message to described first kind primary user device, described third notice message is used to indicate described first kind primary user device and uses described detected state to carry out transfer of data for the mandate frequency range that detected state described in the mandate frequency range in " spare time " is " doing ".

5. the method according to any one of claim 1-4 claim, it is characterized in that, described from all primary user device taking described mandate frequency range, determine that described first kind throughput is less than at least one first kind primary user device of default throughput after, described method also comprises:

According to the priority of each described first kind primary user device, each described first kind primary user device is sorted.

6. a data transfer controller in cognition network, is characterized in that, comprising:

Acquiring unit, for when authorizing the detected state of frequency range for " doing " in primary user's network, obtains the first kind throughput taking each primary user device of described mandate frequency range;

Processing unit, for determining that described first kind throughput is less than at least one first kind primary user device of default throughput from all primary user device taking described mandate frequency range;

Described processing unit, also for determining the via node cognitive user equipment in cognitive user network being carried out transfer of data as described first kind primary user device according to data transmission policies, described data transmission policies is used for the via node used when first kind primary user device carries out transfer of data described in decision-making;

Transmitting element, for sending the first notification message to described first kind primary user device, and send the second notification message to described cognitive user equipment, described first notification message is used to indicate described first kind primary user device and described cognitive user equipment is carried out transfer of data as via node, the described mandate frequency range that described second notification message is used to indicate first kind primary user device use described in described cognitive user equipment use carries out transfer of data, travels through first kind primary user device described in other.

7. device according to claim 6, is characterized in that, described acquiring unit specifically for:

Obtain the first kind throughput taking each primary user device of described mandate frequency range according to the first formula, described first formula is:

$T_{PU\_n}={\mathrm{Blog}}_2\[1+\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}}{N_{0}B}\]$

Wherein, T _{pU_n}represent the first kind throughput of primary user device, B represents the channel width of authorizing frequency range, N ₀represent noise power spectral density, N ₀b represents noise power, P _nodeBrepresent the transmitting power of primary user's network base station, represent the channel gain of primary user's network base station to primary user device, represent the signal power of primary user's network base station to primary user device.

8. device according to claim 7, is characterized in that, described processing unit specifically for:

When described first kind primary user device resides in described primary user's network, when each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as described first kind primary user device, obtain each Equations of The Second Kind throughput of described first kind primary user device according to the second formula, described second formula is:

$T_{PU\_n}(SU\_m)=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{NodeB}\·h_{NodeB}^{PU\_m}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{SU\_m}},\frac{P_{NodeB}\·h_{NodeB}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B+P_{SC-AP}\·h_{SC-AP}^{PU\_n}}\}\]$

Wherein, wherein, T _{pU_n}(SU_m) the Equations of The Second Kind throughput of primary user device is represented, represent the channel gain of primary user's network base station to cognitive user equipment, represent the signal power of primary user's network base station to cognitive user equipment, P _sC-APrepresent the transmitting power of cognitive user network base station, represent the channel gain of cognitive user network base station to cognitive user equipment, represent the signal power of cognitive user network base station to cognitive user equipment, P _{sU_m}represent the transmitting power of cognitive user equipment, represent the channel gain of cognitive user equipment to primary user device, represent the signal power of cognitive user equipment to primary user device, represent the channel gain of cognitive user network base station to primary user device, represent the signal power of cognitive user network base station to primary user device;

Determine maximum Equations of The Second Kind throughput in all Equations of The Second Kind throughputs of described first kind primary user device, described maximum Equations of The Second Kind throughput is the first cognitive user equipment when carrying out the via node of transfer of data as described first kind primary user device, the Equations of The Second Kind throughput of described first kind primary user device;

When the maximum Equations of The Second Kind throughput of described first kind primary user device is more than or equal to described default throughput, determine that described first cognitive user equipment carries out the via node of transfer of data as described first kind primary user device;

When the maximum Equations of The Second Kind throughput of described first kind primary user device is less than described default throughput, described first kind primary user device resides in described cognitive user network, each cognitive user equipment in cognitive user network is carried out the via node of transfer of data as described first kind primary user device, obtain each 3rd class throughput of described first kind primary user device according to the 3rd formula, described 3rd formula is:

$T_{PU\_n}{(SU\_m)}^{\′}=\frac{B}{2}{\log }_2\[1+min\{\frac{P_{SC-AP}\·h_{SC-AP}^{SU\_m}}{N_{0}B},\frac{P_{SC-AP}\·h_{SC-AP}^{PU\_n}+P_{SU\_m}\·h_{SU\_m}^{PU\_n}}{N_{0}B}\}\]$

Wherein, T _{pU_n}(SU_m) the 3rd class throughput of ' expression primary user device;

Determine maximum 3rd class throughput in all 3rd class throughputs of described first kind primary user device, described maximum 3rd class throughput is the second cognitive user equipment when carrying out the via node of transfer of data as described first kind primary user device, the 3rd class throughput of described first kind primary user device;

When the maximum 3rd class throughput of described first kind primary user device is more than or equal to described default throughput, determine that described second cognitive user equipment carries out the via node of transfer of data as described first kind primary user device.

9. device according to claim 8, is characterized in that, when the maximum 3rd class throughput of described first kind primary user device is less than described default throughput,

Described acquiring unit, also for obtaining when taking the first kind throughput that arbitrary detected state is the described first kind primary user device of the mandate frequency range in " spare time ";

Described acquiring unit, also for taking the first kind throughput of the described first kind primary user device of described mandate frequency range described in obtaining, and described in take the first kind throughput sum that arbitrary detected state is the described first kind primary user device of the mandate frequency range in " spare time ", obtain first and value;

Described processing unit, also for when described first and value be more than or equal to described default throughput, determine that described first kind primary user device uses described detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " doing " to carry out transfer of data;

Described transmitting element, also for sending third notice message to described first kind primary user device, described third notice message is used to indicate described first kind primary user device and uses described detected state to be the mandate frequency range in " spare time " and described detected state to be the mandate frequency range of " hurrying " to carry out transfer of data.

10. the device according to any one of claim 6-9 claim, is characterized in that,

Described processing unit, also for the priority according to each described first kind primary user device, sorts to each described first kind primary user device.