CN103428866B - Based on the channel of adjacent-channel interference and the distribution system of power and distribution method - Google Patents
Based on the channel of adjacent-channel interference and the distribution system of power and distribution method Download PDFInfo
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- CN103428866B CN103428866B CN201310303762.4A CN201310303762A CN103428866B CN 103428866 B CN103428866 B CN 103428866B CN 201310303762 A CN201310303762 A CN 201310303762A CN 103428866 B CN103428866 B CN 103428866B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
Abstract
The invention provides a kind of based on the channel of adjacent-channel interference and the distribution method of power, comprise the following steps: the channel distance limit calculating each subchannel, and the priority of secondary subscriber network terminal is marked; When the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the subchannel formation minimum channel distance limit sets of sub-channels that selective channel distance limit is minimum; Meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, form subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted; The present invention is under the prerequisite meeting adjacent-channel interference restriction, and by the co-allocation to channel and power, realize the efficiency utilization of frequency spectrum, the present invention also provides a kind of based on the channel of adjacent-channel interference and the distribution system of power.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of based on the channel of adjacent-channel interference and the distribution system of power and distribution method.
Background technology
As one of the cutting edge technology of wireless communication field, cognitive radio technology is by the adjustment to around wireless environment corresponding system parameter (as transmitting power, carrier frequency and modulation technique), effectively solve the problem that frequency spectrum is rare, wherein, how realizing dynamic frequency spectrum deployment is the key technology that cognitive radio technology solves frequency spectrum resource anxiety.
The existing scheme realizing dynamic frequency spectrum deployment, produce when not considering adjacent-channel interference, if application number is " 201110274437.0 " Chinese patent, which propose a kind of channel for cognitive radio networks and power combined allocation method, the method is from the rate requirement of cognitive user, utilize in cooperative game and receive assorted coordination structure target function, drawn and ensured that user is with the condition lower channel of demand and the optimum allocation of power frequently.In concrete computational process, assuming that cognitive user can access given idle channel, then according to minimum speed limit constraints, in conjunction with channel during fairness index analysis maximized system capacity and power allocation scheme.
Can find out according to above description, prior art be applicable to system radio frequency characteristic well, do not need protect bandwidth isolation under Resourse Distribute, but in real network, system transceiver filtering characteristic is unsatisfactory, the undesirable meeting of transmitter strap external characteristic of EVAC (Evacuation Network Computer Model) causes out-of-band radiation on the one hand, produces adjacent frequency interference; On the other hand, the undesirable meeting of receiver filtering characteristic of disturbed system causes it to receive the signal of side channel other system, produces barrage jamming.Meanwhile, the band external characteristic of signal can not be ignored, if so do not consider the situation of adjacent-channel interference, the distribution carrying out channel and power based on Utopian system radio frequency characteristic will cause system in reality due to interference, communication quality to be declined.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of based on the channel of adjacent-channel interference and the distribution system of power and distribution method, make, under the prerequisite meeting adjacent-channel interference restriction, by the co-allocation to channel and power, to realize the efficiency utilization of frequency spectrum.
For realizing above object, the present invention is achieved by the following technical programs:
The invention provides a kind of based on the channel of adjacent-channel interference and the distribution method of power, comprise the following steps:
S1, calculate the channel distance limit of each subchannel, and the priority of secondary subscriber network terminal is marked;
S2, when the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the minimum subchannel of selective channel distance limit forms minimum channel distance limit sets of sub-channels;
S3, meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, forms subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted.
Preferably, the channel distance limit calculating each subchannel in described step S1 comprises further:
Judge the channel distance limit of channel shared by primary user's network terminal;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization;
Calculate the channel distance limit of described each subchannel.
Preferably, the channel distance limit d of channel shared by the described judgement primary user network terminal
mi, judge in the following manner:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, Ω
hfor primary user's network of high power transmission, 1≤m≤M.
Preferably, the channel distance limit of the subchannel of channel shared by primary user's network terminal described in described initialization
calculate in the following manner:
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M.
Preferably, the channel distance limit of the described each subchannel of described calculating
calculate in the following manner:
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
The present invention also provides a kind of based on the channel of adjacent-channel interference and the distribution system of power, comprising:
Channel distance limit computing module, for calculating the channel distance limit of each subchannel, and marks the priority of secondary subscriber network terminal;
Channel and power division module, for when the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the subchannel formation minimum channel distance limit sets of sub-channels that selective channel distance limit is minimum; Meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, form subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted.
Preferably, described channel distance limit computing module, for calculating in the channel distance limit of each subchannel, comprising:
Judge the channel distance limit of channel shared by primary user's network terminal;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization;
Calculate the channel distance limit of described each subchannel.
Preferably, the channel distance limit d of channel shared by the described judgement primary user network terminal
mi, judge in the following manner:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, Ω
hfor primary user's network of high power transmission, 1≤m≤M.
Preferably, the channel distance limit of the subchannel of channel shared by primary user's network terminal described in described initialization
calculate in the following manner:
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M.
Preferably, the channel distance limit of the described each subchannel of described calculating
calculate in the following manner:
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
The invention provides a kind of based on the channel of adjacent-channel interference and the distribution system of power and distribution method, it first goes the channel distance limit calculating each subchannel, the candidate that the minimum set of sub-channels of selective channel distance limit synthesizes time subscriber network terminal accesses channel, be measurement index again with transmitting power, finally, select to meet subchannel access time subscriber network terminal corresponding to minimum emissive power in minimum signal interference ratio, described subscriber network terminal is accessed under the prerequisite meeting adjacent-channel interference restriction, and achieves the co-allocation to channel and power.
Accompanying drawing explanation
Fig. 1 is the flow chart of one embodiment of the invention;
Fig. 2 is another flow chart of one embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment 1:
As shown in Figure 1, the invention provides a kind of based on the channel of adjacent-channel interference and the distribution method of power, comprise the following steps:
S1, calculate the channel distance limit of each subchannel, and the priority of secondary subscriber network terminal is marked;
S2, when the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the minimum subchannel of selective channel distance limit forms minimum channel distance limit sets of sub-channels;
S3, meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, forms subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted.
The invention provides a kind of based on the channel of adjacent-channel interference and the distribution system of power and distribution method, it first goes the channel distance limit calculating each subchannel, the candidate that the minimum set of sub-channels of selective channel distance limit synthesizes time subscriber network terminal accesses channel, be measurement index again with transmitting power, finally, select to meet subchannel access time subscriber network terminal corresponding to minimum emissive power in minimum signal interference ratio, described subscriber network terminal is accessed under the prerequisite meeting adjacent-channel interference restriction, and achieves the co-allocation to channel and power.
Preferably, the channel distance limit calculating each subchannel in described step S1 comprises further:
Judge the channel distance limit of channel shared by primary user's network terminal;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization;
Calculate the channel distance limit of described each subchannel.
Preferably, the channel distance limit d of channel shared by the described judgement primary user network terminal
mi, judge in the following manner:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, Ω
hfor primary user's network of high power transmission, 1≤m≤M.
Preferably, the channel distance limit of the subchannel of channel shared by primary user's network terminal described in described initialization
calculate in the following manner:
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M.
Preferably, the channel distance limit of the described each subchannel of described calculating
calculate in the following manner:
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
As shown in Figure 2, in conjunction with concrete scene, implementing procedure of the present invention is described in detail:
Step 101: the information affecting channel access and power division is collected;
Store primary user's network of network configuration parameter according to geographical position, collect the state information of primary user's network;
According to the Context aware information that cognitive terminal obtains, arrange the channel occupancy situation of primary user's network, wireless chaining status lamp dynamic parameter;
Obtain M channel to be occupied by multiple primary user's network terminal, and each channel has N number of different subchannel;
Step 102: the channel distance limit calculating each subchannel, and the priority of secondary subscriber network terminal is marked;
Following three steps are comprised when carrying out the channel distance limit of each subchannel:
1) the channel distance limit d of channel shared by primary user's network terminal is judged
mi:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, by the transmitting power of primary user, is divided into primary user's network Ω of high power transmission by primary user's network
hand primary user's network Ω of high power transmission
l, 1≤m≤M;
2) the channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M.
3) the channel distance limit of described each subchannel is calculated
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
In addition, when carrying out the priority flag of time network terminal, refer to and carry out priority flag to the secondary network terminal of unallocated channel, wherein, traffic needs its priority larger is higher.
Step 103: judge that whether the available subchannels set of described subscriber network terminal is empty, if so, then jump to step 106 and perform; If not, then perform step 104;
Step 104: in described available subchannels set, the subchannel formation minimum channel distance limit sets of sub-channels Δ that selective channel distance limit is minimum
sub;
Step 105: the transmitting power meeting minimum signal interference ratio according to described subscriber network terminal, to described minimum channel distance limit sets of sub-channels Δ
subin element carry out ascending order arrangement, formed subset
and by described subset
first element transmit as the subchannel of the highest described the subscriber network terminal of priority;
Step 106: the available subchannels set upgrading described subscriber network terminal; Upgrade the channel distance limit of each subchannel;
Step 107: judge whether the secondary subscriber network terminal still having unallocated channel, if having, then returns step 102 and performs, if do not have, then terminate.
Embodiment 2:
The present invention also provides a kind of based on the channel of adjacent-channel interference and the distribution system of power, comprising:
Channel distance limit computing module, for calculating the channel distance limit of each subchannel, and marks the priority of secondary subscriber network terminal;
Channel and power division module, for when the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the subchannel formation minimum channel distance limit sets of sub-channels that selective channel distance limit is minimum; Meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, form subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted.
Preferably, described channel distance limit computing module, for calculating in the channel distance limit of each subchannel, comprising:
Judge the channel distance limit of channel shared by primary user's network terminal;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization;
Calculate the channel distance limit of described each subchannel.
Preferably, the channel distance limit d of channel shared by the described judgement primary user network terminal
mi, judge in the following manner:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, Ω
hfor primary user's network of high power transmission, 1≤m≤M.
Preferably, the channel distance limit of the subchannel of channel shared by primary user's network terminal described in described initialization
calculate in the following manner:
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M.
Preferably, the channel distance limit of the described each subchannel of described calculating
, calculate in the following manner:
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
The invention provides a kind of based on the channel of adjacent-channel interference and the distribution system of power and distribution method, it first goes the channel distance limit calculating each subchannel, the candidate that the minimum set of sub-channels of selective channel distance limit synthesizes time subscriber network terminal accesses channel, be measurement index again with transmitting power, finally, select to meet subchannel access time subscriber network terminal corresponding to minimum emissive power in minimum signal interference ratio, described subscriber network terminal is accessed under the prerequisite meeting adjacent-channel interference restriction, and the co-allocation achieved channel and power, thus improve the availability of frequency spectrum of time user network.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (2)
1., based on the channel of adjacent-channel interference and a distribution method for power, it is characterized in that, comprise the following steps:
S1, calculate the channel distance limit of each subchannel, and the priority of secondary subscriber network terminal is marked;
S2, when the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the minimum subchannel of selective channel distance limit forms minimum channel distance limit sets of sub-channels;
S3, meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, forms subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted;
The channel distance limit calculating each subchannel in described step S1 comprises further:
Judge the channel distance limit of channel shared by primary user's network terminal;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization;
Calculate the channel distance limit of described each subchannel;
The channel distance limit d of channel shared by the described judgement primary user network terminal
mi, judge in the following manner:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, Ω
hfor primary user's network of high power transmission, 1≤m≤M;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in described initialization
calculate in the following manner:
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M;
The channel distance limit of the described each subchannel of described calculating
calculate in the following manner:
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
2., based on the channel of adjacent-channel interference and a distribution system for power, it is characterized in that, comprising:
Channel distance limit computing module, for calculating the channel distance limit of each subchannel, and marks the priority of secondary subscriber network terminal;
Channel and power division module, for when the available subchannels set of described subscriber network terminal is not empty set, in described available subchannels set, the subchannel formation minimum channel distance limit sets of sub-channels that selective channel distance limit is minimum; Meet the transmitting power of minimum signal interference ratio according to described subscriber network terminal, ascending order arrangement is carried out to the element in described minimum channel distance limit sets of sub-channels, form subset; And the subchannel of first of described subset element as the highest described the subscriber network terminal of priority is transmitted;
Described channel distance limit computing module, for calculating in the channel distance limit of each subchannel, comprising:
Judge the channel distance limit of channel shared by primary user's network terminal;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in initialization;
Calculate the channel distance limit of described each subchannel;
The channel distance limit d of channel shared by the described judgement primary user network terminal
mi, judge in the following manner:
Wherein, τ
ishared by primary user's network terminal, the situation of channel, works as τ
iwhen being 0, channel is unoccupied; τ
iwhen being 1, channel is occupied, and 1≤i≤M; The number of channel of M shared by described primary user's network terminal, Ω
hfor primary user's network of high power transmission, 1≤m≤M;
The channel distance limit of the subchannel of channel shared by primary user's network terminal described in described initialization
calculate in the following manner:
wherein m=[(n-1)/N]+1, i=[(j-1)/N]+1;
Wherein, the number of subchannels that the every bar channel of described N shared by described primary user's network terminal comprises, 1≤j≤N × M, 1≤n≤N × M;
The channel distance limit of the described each subchannel of described calculating
calculate in the following manner:
Wherein,
the situation of subchannel shared by secondary subscriber network terminal, when
when being 0, described subchannel is unoccupied;
when being 1, described subchannel is occupied, and 1≤j≤N × M.
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| CN201310303762.4A CN103428866B (en) | 2013-07-18 | 2013-07-18 | Based on the channel of adjacent-channel interference and the distribution system of power and distribution method |
| PCT/CN2013/083244 WO2015007012A1 (en) | 2013-07-18 | 2013-09-10 | Channel and power distribution system and method based on adjacent-channel interference |
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| CN201310303762.4A CN103428866B (en) | 2013-07-18 | 2013-07-18 | Based on the channel of adjacent-channel interference and the distribution system of power and distribution method |
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| CN111800823B (en) * | 2020-06-12 | 2023-03-31 | 云南电网有限责任公司电力科学研究院 | Priority-based power wireless terminal data transmission method and device |
| CN112954697B (en) * | 2021-01-22 | 2022-05-27 | 新华三大数据技术有限公司 | Channel allocation method, device, electronic equipment and storage medium |
| CN114375010B (en) * | 2021-06-28 | 2022-10-14 | 山东华科信息技术有限公司 | Power distribution Internet of things system based on SDN and matching theory |
Citations (3)
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| EP1626594A2 (en) * | 1995-09-01 | 2006-02-15 | Motorola, Inc. | Method and apparatus for communicating in a wireless communication system |
| CN102256360A (en) * | 2011-07-14 | 2011-11-23 | 南京邮电大学 | Knapsack problem-based resource allocation method in cognitive radio system |
| CN102291352A (en) * | 2011-08-17 | 2011-12-21 | 南京邮电大学 | Resource allocation method based on QoS in cognitive OFDM system |
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| KR101881414B1 (en) * | 2010-11-10 | 2018-08-24 | 한국전자통신연구원 | System and method for managing resource in communication system |
| CN102316594B (en) * | 2011-09-23 | 2014-06-04 | 北京邮电大学 | Method for cross layer resource distribution and grouped dispatch in cognitive wireless network |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1626594A2 (en) * | 1995-09-01 | 2006-02-15 | Motorola, Inc. | Method and apparatus for communicating in a wireless communication system |
| CN102256360A (en) * | 2011-07-14 | 2011-11-23 | 南京邮电大学 | Knapsack problem-based resource allocation method in cognitive radio system |
| CN102291352A (en) * | 2011-08-17 | 2011-12-21 | 南京邮电大学 | Resource allocation method based on QoS in cognitive OFDM system |
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| Title |
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| Adaptive Rate and Power Transmission for OFDM-based Cognitive Radio Systems;Ebrahim Bedeer.et al;《Communications (ICC), 2013 IEEE International Conference on》;20130613;第4671-4676页 * |
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