CN105517039B - Data transfer control method and device in a kind of cognition network - Google Patents
Data transfer control method and device in a kind of cognition network Download PDFInfo
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- CN105517039B CN105517039B CN201510900880.2A CN201510900880A CN105517039B CN 105517039 B CN105517039 B CN 105517039B CN 201510900880 A CN201510900880 A CN 201510900880A CN 105517039 B CN105517039 B CN 105517039B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/12—Wireless traffic scheduling
- H04W72/1221—Wireless traffic scheduling based on age of data to be sent
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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Abstract
Data transfer control method and device in a kind of cognition network of the embodiment of the present invention offer, it is related to the communications field, the throughput of primary user device and the throughput of cognitive user equipment can be effectively improved, while reducing the interference between primary user device and cognitive user equipment.Including：S1, the first kind throughput for obtaining each primary user device for occupying the authorized spectrum band that detecting state is " busy "；S2, determine that first kind throughput is less than the first kind primary user device of default throughput from all primary user devices for occupying authorized spectrum band；S3, the relay node for carrying out data transmission the cognitive user equipment in cognitive user network as first kind primary user device is determined according to data transmission policies；S4, the first notification message is sent to first kind primary user device, and send second notification message to cognitive user equipment, traverse other first kind primary user devices and repeat S3 S4.For improving throughput.
Description
Technical field
The present invention relates to data transfer control method and devices in the communications field more particularly to a kind of cognition network.
Background technology
Cognition network includes primary user's network and cognitive user network, and primary user's network includes primary user device, and cognition is used
Family network includes cognitive user equipment.Usual cognition network is by the way of identical networking, i.e. primary user's network and cognitive user
Network share licenses to whole frequency spectrum resources of primary user's network, in such networking plan, primary user's network base of adjusting the distance
(eNB) is stood farther out and for the primary user device of primary user's network closer from cognitive user network base station (SC-AP), be easy by
Strong downlink to cognitive user network base station is interfered, and the throughput of primary user device is relatively low；Simultaneously as cognitive user network
The transmission power of base station is generally much smaller than the transmission power of primary user's network base station, and primary user's network base station is easy to cognitive user
The cognitive user equipment of network causes strong downlink to interfere, and the throughput of cognitive user equipment is relatively low.
Invention content
Data transfer control method and device in a kind of cognition network of the embodiment of the present invention offer, can effectively improve master
The throughput of user equipment and the throughput of cognitive user equipment, at the same reduce primary user device and cognitive user equipment it
Between interference.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, data transfer control method in a kind of cognition network is provided, including：
S1, the first kind throughput for obtaining each primary user device for occupying the authorized spectrum band that detecting state is " busy "；
S2, determine that the first kind throughput is less than default gulp down from all primary user devices for occupying the authorized spectrum band
The first kind primary user device for spitting rate can be the user equipment in primary user's network edge, the first kind primary user device
Can be multiple；
S3, it is determined using the cognitive user equipment in cognitive user network as the first kind master according to data transmission policies
The relay node that user equipment carries out data transmission；
S4, the first notification message is sent to the first kind primary user device, and sent to the cognitive user equipment
Second notification message, first notification message are used to indicate the first kind primary user device and make the cognitive user equipment
Carry out data transmission for relay node, the second notification message is used to indicate the cognitive user equipment and uses the first kind
The authorized spectrum band that primary user device uses carries out data transmission, and traverses other described first kind primary user devices and repeats
S3-S4, until all first kind primary user devices traversal finishes.
Data transfer control method in the cognition network that above-mentioned first aspect provides determines that occupying detecting state is first
The first kind primary user device of the authorized spectrum band of " busy ", the first kind primary user device are that first kind throughput is less than default handle up
Then cognitive user equipment in cognitive user network is determined as described by the user equipment of rate according to data transmission policies
The relay node that a kind of primary user device carries out data transmission improves the throughput of primary user device, meanwhile, it can make described to recognize
Know that user equipment is carried out data transmission using the authorized spectrum band that the first kind primary user device uses, improves cognitive user
The throughput of equipment, while reducing the interference between primary user device and cognitive user equipment.
Second aspect provides data transfer controller in a kind of cognition network, including：
Acquiring unit, for when the detecting state of authorized spectrum band in primary user's network is " busy ", obtaining and being awarded described in occupying
Weigh the first kind throughput of each primary user device of frequency range；
Processing unit, for determining the first kind throughput from all primary user devices for occupying the authorized spectrum band
Less than at least one first kind primary user device of default throughput；
The processing unit is additionally operable to be determined the cognitive user equipment in cognitive user network according to data transmission policies
As the relay node that the first kind primary user device carries out data transmission, the data transmission policies are for described in decision the
A kind of primary user device used relay node when carrying out data transmission；
Transmission unit, for being used to the first kind primary user device the first notification message of transmission, and to the cognition
Family equipment sends second notification message, and first notification message is used to indicate the first kind primary user device by the cognition
User equipment carries out data transmission as relay node, and the second notification message is used to indicate the cognitive user equipment and uses
The authorized spectrum band that the first kind primary user device uses carries out data transmission, and traverses other described first kind primary users and sets
It is standby.
Data transfer controller in the cognition network that above-mentioned second aspect provides determines that occupying detecting state is first
The first kind primary user device of the authorized spectrum band of " busy ", the first kind primary user device are that first kind throughput is less than default handle up
Then cognitive user equipment in cognitive user network is determined as described by the user equipment of rate according to data transmission policies
The relay node that a kind of primary user device carries out data transmission improves the throughput of primary user device, meanwhile, it can make described to recognize
Know that user equipment is carried out data transmission using the authorized spectrum band that the first kind primary user device uses, improves cognitive user
The throughput of equipment, while reducing the interference between primary user device and cognitive user equipment.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of LTE alloisomerisms network architecture schematic diagram that the prior art provides；
Fig. 2 is a kind of LTE alloisomerisms network architecture schematic diagram provided in an embodiment of the present invention；
Fig. 3 is data transfer control method flow chart in a kind of cognition network provided in an embodiment of the present invention；
Fig. 4 is data transfer control method flow chart in another cognition network provided in an embodiment of the present invention；
Fig. 5 is data transfer control method flow chart in another cognition network provided in an embodiment of the present invention；
Fig. 6 is data transfer control method flow chart in another cognition network provided in an embodiment of the present invention；
Fig. 7 is data transfer controller structural schematic diagram in a kind of cognition network provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The basic principle of the present invention is：Primary user device borrows authorized spectrum band and carries out data biography to cognitive user equipment
Defeated, obtained return is that cognitive user equipment can be used as the relay node oneself carried out data transmission, to improve primary user
The throughput of equipment and the throughput of cognitive user equipment.
Cognition network includes primary user's network and cognitive user network, the specific can be that long term evolution (full name in English：
Long Term Evolution, English abbreviation：LTE) alloisomerism network, wherein primary user's network is also known as macrocellular network
(Macro cell), cognitive user network are also known as microcellulor network (Small cell).It is three-dimensional that the prior art provides a kind of LTE
Heterogeneous network configuration diagram, as shown in Figure 1, including core net, primary user's network and cognitive user network, primary user's network packet
Primary user's network base station and multiple primary user devices (PU) are included, primary user's network base station can be NodeB or eNB, cognition
User network includes a cognitive user network base station (SC-AP) and multiple cognitive user equipment (SU), cognitive user network base
Standing can be WIFI access points or relaying (Relay).In general, primary user's network and cognitive user network use the side of identical networking
Formula, i.e. primary user's network license to whole frequency spectrum resources of primary user's network with cognitive user network share.Primary user device
Authorized spectrum band can be arbitrarily used, and cognitive radio technology may be used in cognitive user equipment, monitors awarding for primary user device
The detecting state for weighing frequency range, when the detecting state of the authorized spectrum band is " spare time ", cognitive user equipment uses mandate frequency
Section carry out data transmission, when the detecting state of the authorized spectrum band be " busy " when, cognitive user equipment use unauthorized frequency range into
Row data transmission.
But the frequency spectrum resource utilization rate of the prior art is relatively low, and adjust the distance primary user's network base station (eNB) compared with
For the remote and primary user device of primary user's network closer from cognitive user network base station (SC-AP), it is easy to be used by cognition
The strong downlink of family network base station is interfered, and the throughput of primary user device is relatively low；Simultaneously as the hair of cognitive user network base station
The transmission power that power is generally much smaller than primary user's network base station is penetrated, primary user's network base station is easy to recognize cognitive user network
Know that user equipment causes strong downlink to interfere, the throughput of cognitive user equipment is relatively low.
The present invention provides a kind of LTE alloisomerisms network architecture schematic diagram, as shown in Fig. 2, including core net, data transmission
Control device, primary user's network and cognitive user network, primary user's network include base station and primary user device (PU), and base station can be with
It is NodeB or eNB, cognitive user network includes base station (SC-AP) and cognitive user equipment (SU).Data transfer controller is held
Data transfer control method step in cognition network described in row embodiment one so that primary user device borrow authorized spectrum band is recognized
Know that user equipment carries out data transmission, obtained return is that cognitive user equipment can be used as the relaying oneself carried out data transmission
Node, to improve the throughput of primary user device and the throughput of cognitive user equipment.
Embodiment one
Data transfer control method in a kind of cognition network of offer of the embodiment of the present invention, as shown in figure 3, including：
Step 101, when the detecting state of authorized spectrum band in primary user's network be " busy " when, data transfer controller acquisition
Occupy the first kind throughput of each primary user device of authorized spectrum band.
First, data transfer controller obtains the detecting state of each authorized spectrum band in primary user's network.
Assuming that there is N number of authorized spectrum band (Band_1~Band_N), data transfer controller detects N number of authorized spectrum band
It listens, whether monitor in each authorized spectrum band, which has primary user device to occupy authorized spectrum band, carries out data transmission, to obtain primary user's net
The detecting state of authorized spectrum band in network.The authorized spectrum band licenses to primary user for the base station (eNB) in main user network and sets
Standby frequency range so that can be carried out data transmission using authorized spectrum band between primary user device, the N is whole more than or equal to 1
Number.
Detecting state includes " busy " and " spare time ", and there are data transmissions in authorized spectrum band for " busy " expression, described " spare time "
It indicates that data transmission is not present in authorized spectrum band.
The embodiment of the present invention assumes that primary user device occupies authorized spectrum band Band_n and carries out data transmission, Data Transmission Controlling
The detecting state that device obtains the authorized spectrum band Band_n in primary user's network is " busy ".
Then, data transfer controller is set according to each primary user of the first formula acquisition occupancy authorized spectrum band Band_n
Standby first kind throughput, at this time primary user device do not consider other as the unique subscriber equipment on authorized spectrum band Band_n
Interference, first kind throughput are that the primary user device resides in primary user's network, occupy the authorized spectrum band Band_n
The throughput carried out data transmission.
First formula is：
Wherein, TPU_nIndicate that the first kind throughput of primary user device, B indicate the channel width of authorized spectrum band, N0Expression is made an uproar
Power sound spectrum density, N0B indicates noise power, PNodeBIndicate the transmission power of primary user's network base station,Indicate primary user
Network base station to primary user device channel gain,Signal of the expression primary user's network base station to primary user device
Power.
Step 102, data transfer controller determine that the first kind is gulped down from all primary user devices for occupying authorized spectrum band
Spit at least one first kind primary user device that rate is less than default throughput.
Data transfer controller obtains the first kind throughput for each primary user device for occupying authorized spectrum band 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
More than or equal to default throughput, it was demonstrated that the better performances such as throughput and signal of the primary user device can be continuing with this and award
Power frequency range Band_n carries out data transmission；When the first kind throughput of primary user device is less than default throughput, it was demonstrated that this is primary
The performances such as the throughput and signal of family equipment are poor, execute step 103.
It should be noted that default throughput can according to the size of network, the size in position area, user equipment it is preferential
The case where real networks such as the position of cell residing for grade and user equipment, is configured.First kind primary user device is to reside in
Primary user's network occupies the primary user device that the throughput that authorized spectrum band Band_n carries out data transmission is less than default throughput.
Step 103, data transfer controller determine according to data transmission policies and use the cognition in cognitive user network
The relay node that family equipment carries out data transmission as first kind primary user device.
During the data transmission policies are used when carrying out data transmission for first kind primary user device described in decision
After node.
Step 104, data transfer controller send the first notification message to first kind primary user device.
First notification message is used to indicate the first kind primary user device using the cognitive user equipment as in
Carry out data transmission after node.
Step 105, data transfer controller send second notification message to cognitive user equipment.
The second notification message is used to indicate the cognitive user equipment and is used using the first kind primary user device
The authorized spectrum band Band_n carry out data transmission.
It traverses other described first kind primary user devices and repeats 103 to step 105.
Data transfer control method in cognition network provided in an embodiment of the present invention determines that occupying detecting state is first
The first kind primary user device of the authorized spectrum band of " busy ", the first kind primary user device are that first kind throughput is less than default handle up
Then cognitive user equipment in cognitive user network is determined as described by the user equipment of rate according to data transmission policies
The relay node that a kind of primary user device carries out data transmission improves the throughput of primary user device, meanwhile, it can make described to recognize
Know that user equipment is carried out data transmission using the authorized spectrum band that the first kind primary user device uses, improves cognitive user
The throughput of equipment, while reducing the interference between primary user device and cognitive user equipment.
Based on Fig. 3 as shown in figure 4, the method specifically includes following steps.
After step 102, the method further includes step 106.
Step 106, data transfer controller are according to the priority of each first kind primary user device, to each first kind
Primary user device is ranked up.
The priority of primary user device can be the grade of service of the operator to user, and the grade of service includes " gold medal ", " silver
Board " and " bronze medal "." gold medal " grade of service corresponds to high priority, priority during " silver medal " grade of service corresponds to, " bronze medal " service
Grade corresponds to low priority.
It should be noted that for the primary user device of priority having the same, default throughput and master may be used
The difference of the first kind throughput of user equipment, is ranked up.Work asDifference it is smaller, priority is higher.
Step 103 specifically includes step 1031 to step 1038.Step 104 specifically includes step 1041 to step 1042.
Step 105 specifically includes step 1051 to step 1052.
Step 1031, data transfer controller reside in primary user's net with the first kind primary user device of highest priority
Network, by each cognitive user equipment in cognitive user network, the highest first kind primary user device of grade carries out data as priority
The relay node of transmission obtains the second class of each of the first kind primary user device of highest priority according to the second formula and handles up
Rate.
Second class throughput is that first kind primary user device resides in primary user's network, by the cognition in cognitive user network
The throughput for the relay node that user equipment carries out data transmission as first kind primary user device.At this point, need to consider to accept as unavoidable
Know interference of the user network base station to first kind primary user device.
Second formula is：
Wherein, TPU_n(SU_m) the second class throughput of primary user device is indicated,Indicate that primary user's network base station arrives
The channel gain of cognitive user equipment,Indicate primary user's network base station to cognitive user equipment signal power,
PSC-APIndicate the transmission power of cognitive user network base station,Indicate cognitive user network base station to cognitive user equipment
Channel gain,Indicate cognitive user network base station to the signal power of cognitive user equipment, PSU_mIndicate cognition
The transmission power of user equipment,Indicate cognitive user equipment to primary user device channel gain,It indicates
Cognitive user equipment to primary user device signal power,Letter of the expression cognitive user network base station to primary user device
Road gain,Signal power of the expression cognitive user network base station to primary user device.
Step 1032, data transfer controller determine all second classes of the first kind primary user device of highest priority
Maximum second class throughput in throughput.
The maximum second class throughput is that the highest first kind primary user of grade sets the first cognitive user equipment as priority
When the standby relay node carried out data transmission, the second class throughput of the first kind primary user device of highest priority.First recognizes
Know that user equipment can be denoted as SU_m'.
Step 1033, data transfer controller judge the second class of maximum of the first kind primary user device of highest priority
Whether throughput is more than or equal to default throughput.
If maximum the second class throughput of the first kind primary user device of highest priority is more than or equal to default throughput,
Execute step 1034；If maximum the second class throughput of the first kind primary user device of highest priority is less than default throughput
When, execute step 1035.
Step 1034, data transfer controller determine the first cognitive user equipment highest first kind master of grade as priority
The relay node that user equipment carries out data transmission.
The first kind primary user device of highest priority resides in primary user's network, and first in cognitive user network is recognized
Know that the user equipment SU_m' relay nodes that the highest first kind primary user device of grade carries out data transmission as priority carry out data
Transmission, while the first cognitive user equipment SU_m' can be with the authorized spectrum band of the highest first kind primary user device of use priority
Band_n carries out data transmission.
Step 1041, data transfer controller send the first notice to the first kind primary user device of highest priority and disappear
Breath.
The first kind primary user device that first notification message is used to indicate highest priority sets the first cognitive user
It is standby to carry out data transmission as relay node.
Step 1051, data transfer controller send second notification message to the first cognitive user equipment.
The second notification message is used to indicate the first highest first kind primary user of cognitive user equipment use priority
The authorized spectrum band Band_n that equipment uses carries out data transmission.
Further include step 1035 to step 1038 based on Fig. 4 as shown in figure 5, after step 1033.
Step 1035, data transfer controller reside in cognitive user with the first kind primary user device of highest priority
Network, by each cognitive user equipment in cognitive user network as priority the highest first kind primary user device of grade into line number
According to the relay node of transmission, each third class throughput of the first kind primary user device is obtained according to third formula.
Third class throughput is that first kind primary user device resides in cognitive user network, by recognizing in cognitive user network
Know the throughput for the relay node that user equipment carries out data transmission as first kind primary user device.
The third formula is：
Wherein, TPU_n(SU_m) the third class throughput of ' expression primary user device.
Step 1036, data transfer controller determine all third classes of the first kind primary user device of highest priority
Maximum third class throughput in throughput.
The maximum third class throughput is that the highest first kind primary user of grade sets the second cognitive user equipment as priority
When the standby relay node carried out data transmission, the third class throughput of the first kind primary user device of highest priority.Second recognizes
Know that user equipment is denoted as SU_m ".
Step 1037, data transfer controller judge the maximum third class of the first kind primary user device of highest priority
Whether throughput is more than or equal to default throughput.
If the maximum third class throughput of the first kind primary user device of highest priority is more than or equal to default throughput, hold
Row step 1038；If the maximum third class throughput of the first kind primary user device of highest priority is less than default throughput, hold
Row step 107.
Step 1038, data transfer controller determine the second cognitive user equipment highest first kind master of grade as priority
The relay node that user equipment carries out data transmission.
The first kind primary user device of highest priority resides in cognitive user network, by second in cognitive user network
The cognitive user equipment SU_m " relay nodes that the highest first kind primary user device of grade carries out data transmission as priority, simultaneously
Second cognitive user equipment SU_m " can be carried out with the authorized spectrum band Band_n of the highest first kind primary user device of use priority
Data transmission.
Step 1042, data transfer controller send the first notice to the first kind primary user device of highest priority and disappear
Breath.
The first kind primary user device that first notification message is used to indicate highest priority sets the second cognitive user
It is standby to carry out data transmission as relay node.
Step 1052, data transfer controller send second notification message to the second cognitive user equipment.
The second notification message is used to indicate the second highest first kind primary user of cognitive user equipment use priority
The authorized spectrum band Band_n that equipment uses carries out data transmission.
Further include step 107 to step 110 based on Fig. 5 as shown in fig. 6, after step 1037.
Step 107, data transfer controller, which obtain, works as the preferential of the authorized spectrum band for occupying that any detecting state is " spare time "
The first kind throughput of the highest first kind primary user device of grade.
Data transfer controller obtains the excellent of the authorized spectrum band for occupying that any detecting state is " spare time " according to the first formula
The first kind throughput of the first highest first kind primary user device of grade.Detecting state, which is the authorized spectrum band in " spare time ", to be denoted as
Band_n'.N' ≠ n, Band_n' are the authorized spectrum band in one " spare time " randomly selecting.
The first kind primary user that step 108, data transfer controller obtain the highest priority for occupying authorized spectrum band sets
Standby first kind throughput, and any detecting state of occupancy are primary for the first kind of the highest priority of the authorized spectrum band in " spare time "
The sum of first kind throughput of family equipment, obtains first and value.
First and value be：
TPU_n=TPU_n(Band_n)+TPU_n(Band_n')
Step 109, data transfer controller judge first and value be more than or equal to default throughput, determine highest priority
First kind primary user device using detecting state be the authorized spectrum band in " spare time " and mandate that the detecting state is " busy " frequently
Section carries out data transmission.
It should be noted that judge first and value be less than preset throughput when, the first kind primary user of highest priority sets
Carry out data transmission for the authorized spectrum band Band_n that the detecting state is " busy " is continuing with.
Step 110, data transfer controller send third notice to the first kind primary user device of highest priority and disappear
Breath.
The first kind primary user device that the third notice message is used to indicate highest priority uses the detecting state
Carry out data transmission for the authorized spectrum band in " spare time " and authorized spectrum band that the detecting state is " busy ".
Data transfer controller traverses other first kind primary user devices according to priority, executes described in fig. 4 to fig. 6
Step.
It should be noted that if highest priority first kind primary user device select SU_m' as relay node, then after
The low first kind primary user device of one priority does not consider further that SU_m'.In addition, to ensure that other first kind primary user devices connect
The fairness entered, PU_n can only at most use two authorized spectrum bands.
For the cognitive user equipment not as relay node, continue to reside in cognitive user network, non-be awarded using other
Frequency range, such as WIFI frequency ranges are weighed, is carried out data transmission.
The principle of first formula of the present invention, the second formula and third formula according to shannon formula can refer to existing
There is the principle of technology shannon formula, details are not described herein by the present invention.
First, determine that the first kind primary user device for occupying the authorized spectrum band that detecting state is " busy ", the first kind are primary
Family equipment is the user equipment that first kind throughput is less than default throughput, then, according to data transmission policies by cognitive user
Cognitive user equipment in network is determined as the relay node that the first kind primary user device carries out data transmission, and improves primary
The throughput of family equipment, meanwhile, the cognitive user equipment can be made to be used using the first kind primary user device described
Authorized spectrum band carries out data transmission, and improves the throughput of cognitive user equipment, while reducing primary user device and cognitive user is set
Interference between standby.
It is exemplary, it is assumed that primary user's network includes 1 NodeB, 10 primary user PU (PU_1~PU_10).Cognitive user
Network includes 1 SC_AP, 4 SU (SU_1~SU_4).The available authorized spectrum band of primary user's network is 10MHz, is divided into sub- frequency
Road Band_1~Band_10 (each subchannel is 1MHz), is respectively allocated to 10 primary user PU and uses, wherein 1 PU corresponds to 1
A subchannel.
1. data transfer controller carries out state inspection to all authorized spectrum band Band_1~Band_10 in primary user's network
It surveys, wherein Band_2 is " spare time ", i.e., PU_2 does not do business, other channel states are " busy ".
2. calculating first kind throughputs of the primary user PU_n (n ≠ 2) on corresponding " busy " channel Band_n (n ≠ 2)Wherein TPU_4、TPU_5And TPU_9Less than default throughput, cognitive user to be accessed
The priority of network is followed successively by PU_4, PU_9, PU_5 from high to low, wherein PU_4 is " gold medal " user.
3. for PU_4：
4. for PU_9：
A) it calculates PU_9 and resides in primary user's network, and the second class obtained by relay node by each SU (m ≠ 2)
Throughput.Obtain TPU_9(SU_1) maximum, and TPU_9(SU_1) it is more than default throughputThen PU_9 still resides in primary user
Network, and relay nodes of the SU_1 as PU_9 data transmissions, PU_9 and SU_1 share channel Band_9.
5. for PU_5：
A) it calculates PU_5 and resides in primary user's network, and second obtained by relay node by each SU (m ≠ 1,2)
Class throughput.Obtain TPU_5(SU_4) maximum, and TPU_5(SU_4) it is less than threshold valueThen execute 5b)；
B) for calculating PU_5 and accessing to cognitive user network, and obtained by relay node by each SU (m ≠ 1,2)
Three classes throughput.Obtain TPU_5(SU_3) maximum, and TPU_5(SU_3) still less than threshold valueThen execute 5c)；
C) PU_5 attempts access " spare time " channel Band_2：PU_5 is calculated to reside in primary user's network while using Band_5
And the first kind throughput T of Band_2PU_5=TPU_5(Band_5)+TPU_5(Band_2).Obtain TPU_5More than default throughputThen PU_5 still resides in primary user's network, is carried out data transmission using Band_5 and Band_2.
In conclusion PU_4 accesses cognitive user network, and relay nodes of the SU_2 as PU_4 data transmissions, PU_4 and
SU_2 shares channel Band_4；PU_9 still resides in primary user's network, and relay nodes of the SU_1 as PU_9 data transmissions,
PU_9 and SU_1 shares channel Band_9；PU_5 still resides in primary user's network, and data are carried out using Band_5 and Band_2
Transmission；SU_3 and SU_4 continues to reside in cognitive user network, using other unauthorized frequency ranges (such as WIFI frequency ranges) into line number
According to transmission.
Embodiment two
Data transfer controller 20 in a kind of cognition network of offer of the embodiment of the present invention, as shown in fig. 7, comprises：
Acquiring unit 201, for when the detecting state of authorized spectrum band in primary user's network is " busy ", obtaining described in occupying
The first kind throughput of each primary user device of authorized spectrum band；
Processing unit 202, for determining that the first kind is gulped down from all primary user devices for occupying the authorized spectrum band
Spit at least one first kind primary user device that rate is less than default throughput；
The processing unit 202 is additionally operable to be determined the cognitive user in cognitive user network according to data transmission policies
The relay node that equipment carries out data transmission as the first kind primary user device, the data transmission policies are used for decision institute
State used relay node when first kind primary user device carries out data transmission；
Transmission unit 203, for sending the first notification message to the first kind primary user device, and to the cognition
User equipment sends second notification message, and first notification message is used to indicate the first kind primary user device to be recognized described
Know that user equipment carries out data transmission as relay node, the second notification message, which is used to indicate the cognitive user equipment, to be made
The authorized spectrum band used with the first kind primary user device carries out data transmission, and traverses other first kind primary users
Equipment.
First, determine that the first kind primary user device for occupying the authorized spectrum band that detecting state is " busy ", the first kind are primary
Family equipment is the user equipment that first kind throughput is less than default throughput, then, according to data transmission policies by cognitive user
Cognitive user equipment in network is determined as the relay node that the first kind primary user device carries out data transmission, and improves primary
The throughput of family equipment, meanwhile, the cognitive user equipment can be made to be used using the first kind primary user device described
Authorized spectrum band carries out data transmission, and improves the throughput of cognitive user equipment, while reducing primary user device and cognitive user is set
Interference between standby.
The acquiring unit 201 is specifically used for：
Obtain the first kind throughput for each primary user device for occupying the authorized spectrum band according to the first formula, described the
One formula is：
Wherein, TPU_nIndicate that the first kind throughput of primary user device, B indicate the channel width of authorized spectrum band, N0Expression is made an uproar
Power sound spectrum density, N0B indicates noise power, PNodeBIndicate the transmission power of primary user's network base station,Indicate primary user
Network base station to primary user device channel gain,Signal of the expression primary user's network base station to primary user device
Power.
The processing unit 202 is specifically used for：
When the first kind primary user device resides in primary user's network, by each cognition in cognitive user network
When the relay node that user equipment carries out data transmission as the first kind primary user device, according to the acquisition of the second formula
Each of first kind primary user device the second class throughput, second formula are：
Wherein, TPU_n(SU_m) the second class throughput of primary user device is indicated,Indicate that primary user's network base station arrives
The channel gain of cognitive user equipment,Indicate primary user's network base station to cognitive user equipment signal power,
PSC-APIndicate the transmission power of cognitive user network base station,Indicate cognitive user network base station to cognitive user equipment
Channel gain,Indicate cognitive user network base station to the signal power of cognitive user equipment, PSU_mIndicate cognition
The transmission power of user equipment,Indicate cognitive user equipment to primary user device channel gain,It indicates
Cognitive user equipment to primary user device signal power,Letter of the expression cognitive user network base station to primary user device
Road gain,Signal power of the expression cognitive user network base station to primary user device；
Determine maximum second class throughput, the maximum in all second class throughputs of the first kind primary user device
Second class throughput is the relay node that the first cognitive user equipment carries out data transmission as the first kind primary user device
When, the second class throughput of the first kind primary user device；
When maximum the second class throughput of the first kind primary user device is more than or equal to the default throughput, determine
The relay node that the first cognitive user equipment carries out data transmission as the first kind primary user device；
When maximum the second class throughput of the first kind primary user device is less than the default throughput, described first
Class primary user device resides in the cognitive user network, using each cognitive user equipment in cognitive user network as described in
The relay node that first kind primary user device carries out data transmission obtains the first kind primary user device according to third formula
Each third class throughput, the third formula are：
Wherein, TPU_n(SU_m) the third class throughput of ' expression primary user device；
Determine maximum third class throughput, the maximum in all third class throughputs of the first kind primary user device
Third class throughput is the relay node that the second cognitive user equipment carries out data transmission as the first kind primary user device
When, the third class throughput of the first kind primary user device；
When the maximum third class throughput of the first kind primary user device is more than or equal to the default throughput, determine
The relay node that the second cognitive user equipment carries out data transmission as the first kind primary user device.
When the maximum third class throughput of the first kind primary user device is less than the default throughput,
The acquiring unit 201 is additionally operable to obtain when occupying described the of authorized spectrum band that any detecting state is " spare time "
The first kind throughput of a kind of primary user device；
The acquiring unit 201 is additionally operable to obtain the first kind primary user device for occupying the authorized spectrum band
First kind throughput and the first kind primary user device for occupying the authorized spectrum band that any detecting state is " spare time "
The sum of first kind throughput, obtain first and value；
The processing unit 202, be additionally operable to when described first and value more than or equal to the default throughput, determine described the
A kind of primary user device is the authorized spectrum band in " spare time " and the mandate frequency that the detecting state is " busy " using the detecting state
Section carries out data transmission；
The transmission unit 203 is additionally operable to send third notice message, the third to the first kind primary user device
It using the detecting state is the authorized spectrum band in " spare time " and described that notification message, which is used to indicate the first kind primary user device,
Detecting state is that the authorized spectrum band of " busy " carries out data transmission.
The processing unit 202 is additionally operable to the priority according to each first kind primary user device, to each described
First kind primary user device is ranked up.
In practical applications, acquiring unit, processing unit and the hair that data transfer controller 20 includes in cognition network
It can be that frequency spectrum distribution and user access control center execute data transfer control method of the present invention to send unit.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
It with the specific work process of unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer read/write memory medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or light
The various media that can store program code such as disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
1. data transfer control method in a kind of cognition network, which is characterized in that including：
S1, when the detecting state of authorized spectrum band in primary user's network is " busy ", obtain each master of the occupancy authorized spectrum band
The first kind throughput of user equipment；
S2, determine that the first kind throughput is less than default throughput from all primary user devices for occupying the authorized spectrum band
At least one first kind primary user device；
S3, it is determined using the cognitive user equipment in cognitive user network as the first kind primary user according to data transmission policies
The relay node that equipment carries out data transmission, the data transmission policies are used for first kind primary user device described in decision into line number
Used relay node when according to transmission；
It is described according to data transmission policies determination that the cognitive user equipment in cognitive user network is primary as the first kind
The relay node that family equipment carries out data transmission includes：
When the first kind primary user device resides in primary user's network, by each cognitive user in cognitive user network
When the relay node that equipment carries out data transmission as the first kind primary user device, described first is obtained according to the second formula
Each of class primary user device the second class throughput, second formula are：
Wherein, TPU_n(SU_m) indicate that the second class throughput of primary user device, B indicate the channel width of authorized spectrum band, N0It indicates
Noise power spectral density, N0B indicates noise power, PNodeBIndicate the transmission power of primary user's network base station,Indicate primary
Family network base station to primary user device channel gain,Letter of the expression primary user's network base station to primary user device
Number power,Indicate primary user's network base station to cognitive user equipment channel gain,Indicate primary user's net
Network base station is to the signal power of cognitive user equipment, PSC-APIndicate the transmission power of cognitive user network base station,Expression is recognized
Know user network base station to cognitive user equipment channel gain,Indicate that cognitive user network base station is used to cognition
The signal power of family equipment, PSU_mIndicate the transmission power of cognitive user equipment,Indicate cognitive user equipment to primary user
The channel gain of equipment,Indicate cognitive user equipment to primary user device signal power,Indicate cognition
User network base station to primary user device channel gain,Indicate cognitive user network base station to primary user device
Signal power；
Determine in all second class throughputs of the first kind primary user device maximum second class throughput, described maximum second
When class throughput is the relay node that the first cognitive user equipment carries out data transmission as the first kind primary user device, institute
State the second class throughput of first kind primary user device；
When maximum the second class throughput of the first kind primary user device is more than or equal to the default throughput, described in determination
The relay node that first cognitive user equipment carries out data transmission as the first kind primary user device；
When maximum the second class throughput of the first kind primary user device is less than the default throughput, the first kind master
User equipment resides in the cognitive user network, using each cognitive user equipment in cognitive user network as described first
The relay node that class primary user device carries out data transmission obtains each of described first kind primary user device according to third formula
Third class throughput, the third formula are：
Wherein, TPU_n(SU_m) the third class throughput of ' expression primary user device；
Determine maximum third class throughput in all third class throughputs of the first kind primary user device, the maximum third
When class throughput is the relay node that the second cognitive user equipment carries out data transmission as the first kind primary user device, institute
State the third class throughput of first kind primary user device；
When the maximum third class throughput of the first kind primary user device is more than or equal to the default throughput, described in determination
The relay node that second cognitive user equipment carries out data transmission as the first kind primary user device；
S4, the first notification message is sent to the first kind primary user device, and send second to the cognitive user equipment
Notification message, first notification message are used to indicate the first kind primary user device using the cognitive user equipment as in
Carry out data transmission after node, it is primary using the first kind that the second notification message is used to indicate the cognitive user equipment
The authorized spectrum band that family equipment uses carries out data transmission, and traverses other described first kind primary user devices and repeats S3-
S4。
2. according to the method described in claim 1, it is characterized in that, described obtain each primary user for occupying the authorized spectrum band
The first kind throughput of equipment includes：
The first kind throughput for each primary user device for occupying the authorized spectrum band is obtained according to the first formula, described first is public
Formula is：
Wherein, TPU_nIndicate the first kind throughput of primary user device.
3. according to the method described in claim 2, it is characterized in that, the maximum third class when the first kind primary user device gulps down
When spitting rate less than the default throughput, the method further includes：
It obtains when the first kind for the first kind primary user device for occupying the authorized spectrum band that any detecting state is " spare time " is handled up
Rate；
Obtain the first kind throughput of the first kind primary user device for occupying the authorized spectrum band and the occupancy
Any detecting state is the sum of the first kind throughput of the first kind primary user device of the authorized spectrum band in " spare time ", obtains first
And value；
When described first and value be more than or equal to the default throughput, determine the first kind primary user device use the detection
State is that the authorized spectrum band in " spare time " and authorized spectrum band that the detecting state is " busy " carry out data transmission；
Third notice message is sent to the first kind primary user device, the third notice message is used to indicate the first kind
Primary user device using the detecting state be the authorized spectrum band in " spare time " and authorized spectrum band that the detecting state is " busy " into
Row data transmission.
4. according to the method described in any one of claim 1-3 claims, which is characterized in that described from the occupancy mandate frequency
Determine that the first kind throughput is less than at least one first kind primary user of default throughput in all primary user devices of section
After equipment, the method further includes：
According to the priority of each first kind primary user device, each first kind primary user device is ranked up.
5. data transfer controller in a kind of cognition network, which is characterized in that including：
Acquiring unit occupies the mandate frequency for when the detecting state of authorized spectrum band in primary user's network is " busy ", obtaining
The first kind throughput of each primary user device of section；
Processing unit, for determining that the first kind throughput is less than from all primary user devices for occupying the authorized spectrum band
At least one first kind primary user device of default throughput；
The processing unit, be additionally operable to according to data transmission policies determine using the cognitive user equipment in cognitive user network as
The relay node that the first kind primary user device carries out data transmission, the data transmission policies are for the first kind described in decision
Used relay node when primary user device carries out data transmission；
The processing unit is specifically used for：
When the first kind primary user device resides in primary user's network, by each cognitive user in cognitive user network
When the relay node that equipment carries out data transmission as the first kind primary user device, described first is obtained according to the second formula
Each of class primary user device the second class throughput, second formula are：
Wherein, TPU_n(SU_m) indicate that the second class throughput of primary user device, B indicate the channel width of authorized spectrum band, N0It indicates
Noise power spectral density, N0B indicates noise power, PNodeBIndicate the transmission power of primary user's network base station,Indicate primary
Family network base station to primary user device channel gain,Letter of the expression primary user's network base station to primary user device
Number power,Indicate primary user's network base station to cognitive user equipment channel gain,Indicate primary user's net
Network base station is to the signal power of cognitive user equipment, PSC-APIndicate the transmission power of cognitive user network base station,Expression is recognized
Know user network base station to cognitive user equipment channel gain,Indicate that cognitive user network base station is used to cognition
The signal power of family equipment, PSU_mIndicate the transmission power of cognitive user equipment,Indicate cognitive user equipment to primary user
The channel gain of equipment,Indicate cognitive user equipment to primary user device signal power,Indicate cognition
User network base station to primary user device channel gain,Indicate cognitive user network base station to primary user device
Signal power；
Determine in all second class throughputs of the first kind primary user device maximum second class throughput, described maximum second
When class throughput is the relay node that the first cognitive user equipment carries out data transmission as the first kind primary user device, institute
State the second class throughput of first kind primary user device；
When maximum the second class throughput of the first kind primary user device is more than or equal to the default throughput, described in determination
The relay node that first cognitive user equipment carries out data transmission as the first kind primary user device；
When maximum the second class throughput of the first kind primary user device is less than the default throughput, the first kind master
User equipment resides in the cognitive user network, using each cognitive user equipment in cognitive user network as described first
The relay node that class primary user device carries out data transmission obtains each of described first kind primary user device according to third formula
Third class throughput, the third formula are：
Wherein, TPU_n(SU_m) the third class throughput of ' expression primary user device；
Determine maximum third class throughput in all third class throughputs of the first kind primary user device, the maximum third
When class throughput is the relay node that the second cognitive user equipment carries out data transmission as the first kind primary user device, institute
State the third class throughput of first kind primary user device；
When the maximum third class throughput of the first kind primary user device is more than or equal to the default throughput, described in determination
The relay node that second cognitive user equipment carries out data transmission as the first kind primary user device；
Transmission unit, for being set to the first kind primary user device the first notification message of transmission, and to the cognitive user
Preparation send second notification message, first notification message to be used to indicate the first kind primary user device by the cognitive user
Equipment carries out data transmission as relay node, and the second notification message is used to indicate described in the cognitive user equipment use
The authorized spectrum band that first kind primary user device uses carries out data transmission, and traverses other first kind primary user device weights
The operation of the processing unit and the transmission unit is executed again.
6. device according to claim 5, which is characterized in that the acquiring unit is specifically used for：
The first kind throughput for each primary user device for occupying the authorized spectrum band is obtained according to the first formula, described first is public
Formula is：
Wherein, TPU_nIndicate the first kind throughput of primary user device.
7. device according to claim 6, which is characterized in that when the maximum third class of the first kind primary user device gulps down
When spitting rate less than the default throughput,
The acquiring unit is additionally operable to obtain when the first kind for occupying the authorized spectrum band that any detecting state is " spare time " is primary
The first kind throughput of family equipment；
The acquiring unit is additionally operable to obtain the first kind of the first kind primary user device for occupying the authorized spectrum band
The first kind of throughput and the first kind primary user device for occupying the authorized spectrum band that any detecting state is " spare time "
The sum of throughput obtains first and value；
The processing unit is additionally operable to be more than or equal to the default throughput when described first and value, determines the first kind master
User equipment is the authorized spectrum band in " spare time " and the authorized spectrum band progress that the detecting state is " busy " using the detecting state
Data transmission；
The transmission unit is additionally operable to send third notice message to the first kind primary user device, and the third notice disappears
Breath is used to indicate the first kind primary user device and uses the authorized spectrum band and the detection shape that the detecting state is " spare time "
State is that the authorized spectrum band of " busy " carries out data transmission.
8. according to the device described in any one of claim 5-7 claims, which is characterized in that
The processing unit is additionally operable to the priority according to each first kind primary user device, to each first kind
Primary user device is ranked up.
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| CN102355738B (en) * | 2011-06-29 | 2014-05-07 | 中国人民解放军理工大学 | Cognitive SIMO (Single Input Multiple Output) network access method on basis of cooperative relay |
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