CN103650563A - Interference control method and network equipment thereof - Google Patents
Interference control method and network equipment thereof Download PDFInfo
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- CN103650563A CN103650563A CN201380000556.4A CN201380000556A CN103650563A CN 103650563 A CN103650563 A CN 103650563A CN 201380000556 A CN201380000556 A CN 201380000556A CN 103650563 A CN103650563 A CN 103650563A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
Abstract
The invention discloses an interference control method and network equipment thereof, relates to the technical field of wireless communication field, and can relieve the problem that the data transmission performance of terminal equipment is reduced in a wireless network because of the interference control of a power control technology. The method comprises the following steps: determining an equivalent correlation coefficient between the signal of first terminal equipment and interference noise by utilizing channel estimation result, wherein the channel estimation result is the channel estimation result of an upstream channel used by the first terminal equipment; determining the relationship between the equivalent correlation coefficient and a preset threshold, if the equivalent correlation coefficient is more than the maximum value of the preset threshold, allocating assigned frequency resource to the first terminal equipment, wherein the assigned frequency resource which is allocated to the first terminal equipment is different from the frequency resource used by second terminal equipment. The invention also discloses network equipment for applying the interference control method.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of interference control method and the network equipment.
Background technology
In existing cordless communication network, thereby often exist and disturb the communication quality that reduces the terminal equipment in cordless communication network between different districts.Therefore, commonly use in the art power control techniques and extenuate the interference existing between community, for example: all terminal equipments in community can be used whole frequency resources, the power of terminal equipment in Dan Yi community in a frequency range from terminal equipment in other communities the power in same frequency range different, for example: community 1 is adjacent with community 2, terminal equipment 1 is in community 1, the power of terminal equipment 1 in frequency range 1 is A, terminal equipment 2 is in community 2, the power of terminal equipment 2 in frequency range 1 is B, and A is greater than B, thereby can extenuate the interference of the suffered community of terminal equipment 12.
But in actual applications, in order to reduce the transmitting power that the interference of neighbor cell is tended to reduce the terminal equipment of this community, yet the transmitting power of terminal equipment reduces and can cause the data transmission performance of terminal equipment in wireless network to reduce.
Summary of the invention
Embodiments of the invention provide a kind of interference control method and the network equipment, can extenuate the problem that adopts power control techniques to disturb to control the data transmission performance reduction in wireless network of the terminal equipment that causes.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments of the invention provide a kind of interference control method, for a kind of wireless telecommunication system, described wireless telecommunication system comprises adjacent at least Liang Ge community, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and described method comprises:
Utilize channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Determine the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
In conjunction with first aspect, in the possible implementation of the first of first aspect, described signal that described channel estimation results determines described first terminal equipment and the equivalent coefficient correlation between interference noise utilized comprises:
According to described channel estimation results, determine the autocorrelation matrix of the up channel that described first terminal equipment is used, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H;
Obtain the interference noise covariance matrix of the up channel that described first terminal equipment uses;
Utilize the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
In conjunction with the possible implementation of the first of first aspect or first aspect, in the possible implementation of the second of first aspect, distribute to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
The possible implementation of the second in conjunction with the possible implementation of the first of first aspect or first aspect or first aspect, in the third possible implementation of first aspect, the maximum that described equivalent coefficient correlation is more than or equal to described default thresholding is: described equivalent coefficient correlation is more than or equal to the second thresholding; Described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding.
The third possible implementation in conjunction with the possible implementation of the first of first aspect or first aspect or first aspect, in the 4th kind of possible implementation of first aspect, also comprise: if described equivalent coefficient correlation is more than or equal to described the first thresholding and is less than described the second thresholding, according to preset rules, reduce described first terminal transmitting power of equipment.
Second aspect, embodiments of the invention provide a kind of network equipment, for a kind of wireless telecommunication system, described wireless telecommunication system comprises adjacent at least Liang Ge community, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and the described network equipment comprises:
Analysis module, for utilizing described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Control module, for determining the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
In conjunction with second aspect, in the possible implementation of the first of second aspect, described analysis module comprises:
The first analytic unit, for determine the autocorrelation matrix of the up channel that described first terminal equipment is used according to described channel estimation results, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H;
The second analytic unit, for obtaining the interference noise covariance matrix of the up channel that described first terminal equipment uses;
The 3rd analytic unit, for utilizing the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
In conjunction with the possible implementation of the first of second aspect or second aspect, in the possible implementation of the second of second aspect, distribute to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
The possible implementation of the second in conjunction with the possible implementation of the first of second aspect or second aspect or second aspect, in the third possible implementation of second aspect, the maximum that described equivalent coefficient correlation is more than or equal to described default thresholding is: described equivalent coefficient correlation is more than or equal to the second thresholding, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding;
Described control module, if be also more than or equal to described the second thresholding for described equivalent coefficient correlation, is the frequency resource of described first terminal devices allocation appointment.
The third possible implementation in conjunction with the possible implementation of the first of second aspect or second aspect or second aspect, in the 4th kind of possible implementation of second aspect, also comprise: described control module, if be also more than or equal to described the first thresholding and be less than described the second thresholding for described equivalent coefficient correlation, reduce described first terminal transmitting power of equipment according to preset rules.
The third aspect, embodiments of the invention provide a kind of computing node equipment, described computing node comprises: processor, communication interface, memory, bus, described processor, described communication interface and described memory, by described bus, complete mutual communicating by letter, described memory needs the data of storage for storing described computing node at running; Described wireless telecommunication system comprises adjacent at least Liang Ge community, and first terminal equipment is arranged in the first community, and the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and described computing node comprises:
Described processor, for utilizing described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Described processor, also for determining the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it by described communication interface, is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
In conjunction with the third aspect, in the possible implementation of the first of the third aspect, described processor, also for:
According to described channel estimation results, determine the autocorrelation matrix of the up channel that described first terminal equipment is used, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H;
And cross the interference noise covariance matrix that described communication interface is obtained the up channel that described first terminal equipment uses;
Recycle the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, in the possible implementation of the second of the third aspect, distribute to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
The possible implementation of the second in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect, in the third possible implementation of the third aspect, the maximum that described equivalent coefficient correlation is more than or equal to described default thresholding is: described equivalent coefficient correlation is more than or equal to the second thresholding, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding; Described processor, if be also more than or equal to described the second thresholding for described equivalent coefficient correlation, is the frequency resource of described first terminal devices allocation appointment.
The third possible implementation in conjunction with the possible implementation of the first of the third aspect or the third aspect or the third aspect, in the 4th kind of possible implementation of the third aspect, also comprise: described processor, if be also more than or equal to described the first thresholding and be less than described the second thresholding for described equivalent coefficient correlation, reduce described first terminal transmitting power of equipment according to preset rules by described communication interface.
Fourth aspect, embodiments of the invention provide a kind of computer program, for a kind of wireless telecommunication system, described wireless telecommunication system comprises adjacent at least Liang Ge community, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and computer program comprises the computer-readable recording medium of having stored program code, the instruction that described program code comprises for:
Utilize channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise; Described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment
Determine the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
The interference control method that the embodiment of the present invention provides and the network equipment, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and determine to disturb based on analysis result the concrete mode of controlling, disturb the concrete mode of control to comprise the transmitting power of distributing different frequency resources or adjustment terminal equipment for the terminal equipment in different districts, and can avoid because the problem that the data transmission performance that the transmitting power of reduction terminal equipment causes reduces for the terminal equipment in different districts distributes the interference control mode of different frequency resources.Compared to existing technology, with power control techniques, disturb control merely, the embodiment of the present invention can be selected suitable interference control mode based on terminal equipment communication conditions, thereby has extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of a kind of interference control method that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the another kind of interference control method that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of a kind of instantiation that Fig. 3 provides for the embodiment of the present invention;
The structural representation of a kind of network equipment that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the another kind of network equipment that Fig. 5 provides for the embodiment of the present invention;
The structural representation of a kind of computing node that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
For making the advantage of technical solution of the present invention clearer, below in conjunction with drawings and Examples, the present invention is elaborated.
The embodiment of the present invention provides a kind of interference control method, as shown in Figure 1, comprising:
It should be noted that, interference control method described in the present embodiment, can be for a kind of wireless telecommunication system, at this wireless telecommunication system, comprise at least two adjacent communities, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and in the present embodiment, edge refers to the overlapping region of coverage of two or more different districts.
In the present embodiment, the up channel that can be used first terminal equipment by the network equipment carries out channel estimating, for example: the channel estimating that the up channel using for first terminal equipment carries out can be carried out by base station, base station can be according to the channel estimation technique that provides in existing communication standard, the pilot signal of the up channel that first terminal equipment is used transforms to after frequency domain, take advantage of with local pilot frequency sequence conjugation, carry out again filtering noise reduction process, and finally obtain channel estimation results.
In actual applications, the up channel that the network equipment can be used the terminal equipment in community by conventional technological means carries out channel estimating, and obtains channel estimation results.
101, utilize described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise.
In the present embodiment, the network equipment can basis:
ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), obtain the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, and R
hh=H*H ＇, H represents described channel estimation results, and H ＇ represents the transpose conjugate matrix of H, and trace represents Matrix Calculating mark.Wherein the concrete mode of Matrix Calculating mark can be mode well-known to those skilled in the art.
102, determine the relation of described equivalent coefficient correlation and default thresholding.
103, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, be the frequency resource of described first terminal devices allocation appointment.
Wherein, the frequency resource of described appointment of distributing to described first terminal equipment is different from the frequency resource that described the second terminal equipment is used, for example: community 1 is adjacent with community 2, first terminal equipment is in community 1, for the frequency resource of first terminal devices allocation be frequency A, the second terminal equipment is 2 edge in community, be that the frequency resource that the second terminal equipment distributes is frequency B, and frequency A does not overlap with frequency B.
If described equivalent coefficient correlation is less than the maximum of described default thresholding, do not deal with.
The interference control method that the embodiment of the present invention provides, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and based on analysis result, take to distribute for the terminal equipment in different districts the interference control mode of different frequency resources, thereby avoid because reduce the problem that data transmission performance that the transmitting power of terminal equipment causes reduces.Compared to existing technology, the embodiment of the present invention can have been extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
Optionally, the embodiment of the present invention provides another kind of interference control method, as shown in Figure 2, comprising:
201, the up channel that described first terminal equipment is used carries out channel estimating, and obtains channel estimation results.
In actual applications, the up channel that first terminal equipment is used carries out channel SRS(Sounding reference signal often, detection reference signal) channel or DMRS(Demodulation reference signal, demodulated reference signal) channel.In the present embodiment, the network equipment can carry out channel estimating to SRS channel or DMRS channel by conventional technological means, and obtains the result of channel estimating.
202, according to described channel estimation results, determine the autocorrelation matrix of the up channel that described first terminal equipment is used.
Wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H.
203, obtain the interference noise covariance matrix of the up channel that described first terminal equipment uses.
In the present embodiment, the network equipment can obtain by conventional technological means the interference noise covariance matrix of the up channel that first terminal equipment uses, such as: the network equipment can utilize reception signal on the pilot tone point of the up channel that first terminal equipment uses and the channel data after filtering noise reduction, ask for interference noise, recycling interference noise obtains interference noise covariance matrix by the algorithm providing in existing communication standard.
204, utilize the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise.
Wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
205, determine the relation of the coefficient correlation such as described and default thresholding.
Wherein, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding.
In the present embodiment, default thresholding can be inputted the network equipment by technical staff, also can be one or more threshold values of network equipment automatic acquisition, for example: default thresholding can comprise the first thresholding and the second thresholding, also can comprise as shown in Table 1 more threshold value.
| Thresholding | Numerical value |
| Thres_low | 0.3 |
| Thres_mid | 0.5 |
| Thres_high | 0.7 |
Table one
Wherein, Thres_low can represent the first thresholding, and Thres_mid can represent the second thresholding, and Thres_high can represent the 3rd thresholding that is greater than the second thresholding.
206, if described equivalent coefficient correlation is more than or equal to described the second thresholding, be the frequency resource of described first terminal devices allocation appointment.
Wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.In the present embodiment, the frequency resource of described appointment can comprise orthogonal frequency resources.
In the present embodiment, the network equipment can two frequency resources that are in orthogonality relation, and one of them is distributed to first terminal equipment, and another is distributed to the second terminal equipment, thus the orthogonal thereto relation of frequency resource that first terminal equipment and the second terminal equipment are used.
207, if described equivalent coefficient correlation is more than or equal to described the first thresholding and is less than described the second thresholding, according to preset rules, reduce described first terminal transmitting power of equipment.
In the present embodiment, the preset rules that the network equipment reduces first terminal transmitting power of equipment institute foundation can be the specific standards of recording in existing communication agreement, also can be to be inputted by technical staff, or for example, by the rule of network equipment automatic acquisition: the transmitting power of first terminal equipment can be reduced to 1/3 of maximum transmission power.
If described equivalent coefficient correlation is less than described the first thresholding, described first terminal equipment is not dealt with.
The interference control method that the embodiment of the present invention provides, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and determine to disturb based on analysis result the concrete mode of controlling, disturb the concrete mode of control to comprise the transmitting power of distributing different frequency resources or adjustment terminal equipment for the terminal equipment in different districts, and can avoid because the problem that the data transmission performance that the transmitting power of reduction terminal equipment causes reduces for the terminal equipment in different districts distributes the interference control mode of different frequency resources.Compared to existing technology, with power control techniques, disturb control merely, the embodiment of the present invention can be selected suitable interference control mode based on terminal equipment communication conditions, thereby has extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
According to the interference control method described in the present embodiment, those skilled in the art can obtain following application scenarios:
In LTE network as shown in Figure 3, community 1 and community 2 are for neighbor cell and belong to same base station, and terminal equipment 1 is arranged in community 1, and terminal equipment 2 is arranged in community 2, and now base station starts community 1 to disturb control.
1, the DMRS channel terminal equipment 1 in community 1 being used carries out channel estimating, and obtains channel estimation results.
2, according to the channel estimation results of DMRS channel is determined to the autocorrelation matrix of terminal equipment 1 place DMRS channel, and obtain terminal equipment 1 at the interference noise covariance matrix of DMRS channel.
3, the signal that the autocorrelation matrix that utilization is obtained and interference noise covariance matrix are determined terminal equipment 1 and the equivalent coefficient correlation between interference noise, and the relation of coefficient correlation and default thresholding such as determine, default thresholding has comprised the first thresholding and the second thresholding.
If 4 equivalent coefficient correlations are more than or equal to the second thresholding, obtain frequency resource 1 and frequency resource 2, and frequency resource 1 and frequency resource 2 relation that is orthogonal.
5, frequency resource 1 is distributed to terminal equipment 1, and frequency resource 2 is distributed to terminal equipment 2.
4 ', arranged side by side with 4-5, if equivalent coefficient correlation is more than or equal to the first thresholding and is less than the second thresholding, according to preset rules, reduce terminal equipment 1 transmitting power of equipment.
It is a kind of for disturbing the network equipment of control that the embodiment of the present invention also provides, this network equipment is for a kind of wireless telecommunication system, described wireless telecommunication system comprises at least two adjacent communities, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, as shown in Figure 4, the network equipment comprises:
Analysis module 41, for utilizing described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise.
Control module 42, for determining the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, is the frequency resource of described first terminal devices allocation appointment.
Wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
The network equipment that the embodiment of the present invention provides, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and determine to disturb based on analysis result the concrete mode of controlling, disturb the concrete mode of control to comprise the transmitting power of distributing different frequency resources or adjustment terminal equipment for the terminal equipment in different districts, and can avoid because the problem that the data transmission performance that the transmitting power of reduction terminal equipment causes reduces for the terminal equipment in different districts distributes the interference control mode of different frequency resources.Compared to existing technology, with power control techniques, disturb control merely, the embodiment of the present invention can be selected suitable interference control mode based on terminal equipment communication conditions, thereby has extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
On the basis of the network equipment as shown in Figure 4, it is another kind of for disturbing the network equipment of control that the embodiment of the present invention also provides, and comprises as shown in Figure 5:
Optionally, described analysis module 52 comprises:
The first analytic unit 521, for determine the autocorrelation matrix of the up channel that described first terminal equipment is used according to described channel estimation results, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H.
The second analytic unit 522, for obtaining the interference noise covariance matrix of the up channel that described first terminal equipment uses.
The 3rd analytic unit 523, for utilizing the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
Wherein, distribute to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
Optionally, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding, described control module 53, if be also more than or equal to described the second thresholding for described equivalent coefficient correlation, it is the frequency resource of described first terminal devices allocation appointment.
Further alternative, described control module 53, if be also more than or equal to described the first thresholding and be less than described the second thresholding for described equivalent coefficient correlation, reduces described first terminal transmitting power of equipment according to preset rules.
The network equipment that the embodiment of the present invention provides, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and determine to disturb based on analysis result the concrete mode of controlling, disturb the concrete mode of control to comprise the transmitting power of distributing different frequency resources or adjustment terminal equipment for the terminal equipment in different districts, and can avoid because the problem that the data transmission performance that the transmitting power of reduction terminal equipment causes reduces for the terminal equipment in different districts distributes the interference control mode of different frequency resources.Compared to existing technology, with power control techniques, disturb control merely, the embodiment of the present invention can be selected suitable interference control mode based on terminal equipment communication conditions, thereby has extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
It is a kind of for disturbing the computing node of control that the embodiment of the present invention provides again, this computing node is for a kind of wireless telecommunication system, described wireless telecommunication system comprises at least two adjacent communities, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, as shown in Figure 6, described computing node comprises: processor 61, communication interface 62, memory 63, bus 64, described processor 61, described communication interface 62 and described memory 63, by described bus 64, complete mutual communication, described memory 63 needs the data of storage for storing described computing node at running, wherein:
Described processor 61, for utilizing described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment.
Optionally, described processor 61, also for determine the autocorrelation matrix of the up channel that described first terminal equipment is used according to described channel estimation results, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H.And cross the interference noise covariance matrix that described communication interface 62 is obtained the up channel that described first terminal equipment uses.Recycle the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
Described processor 61, also for determining the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, by described communication interface 62, be the frequency resource of described first terminal devices allocation appointment.
Wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.Concrete, frequency resource and the frequency resource that described the second terminal equipment is used of distributing to the described appointment of described first terminal equipment can orthogonal thereto relations.
Further alternative, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding, described processor 61, if be also more than or equal to described the second thresholding for described equivalent coefficient correlation, by described communication interface 62, be the frequency resource of described first terminal devices allocation appointment.
Further alternative again, described processor 61, if be also more than or equal to described the first thresholding and be less than described the second thresholding for described equivalent coefficient correlation, reduces described first terminal transmitting power of equipment according to preset rules by described communication interface 62.
The computing node that the embodiment of the present invention provides, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and determine to disturb based on analysis result the concrete mode of controlling, disturb the concrete mode of control to comprise the transmitting power of distributing different frequency resources or adjustment terminal equipment for the terminal equipment in different districts, and can avoid because the problem that the data transmission performance that the transmitting power of reduction terminal equipment causes reduces for the terminal equipment in different districts distributes the interference control mode of different frequency resources.Compared to existing technology, with power control techniques, disturb control merely, the embodiment of the present invention can be selected suitable interference control mode based on terminal equipment communication conditions, thereby has extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
It is a kind of for disturbing the computer program of control that the embodiment of the present invention provides again, this computer program is for a kind of wireless telecommunication system, described wireless telecommunication system comprises at least two adjacent communities, first terminal equipment is arranged in the first community, and the second terminal equipment is positioned at the edge of second community adjacent with described the first community.This computer program comprises the computer-readable recording medium of having stored program code, the instruction that described program code comprises for:
Utilize channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Determine the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
The computer program that the embodiment of the present invention provides, can analyze the equivalent coefficient correlation between the signal of terminal equipment and interference noise, and when analysis result meets certain condition, be that terminal equipment in different districts distributes different frequency resources, terminal equipment in Yi Ge community is not overlapped with the frequency that terminal equipment in neighbor cell is used, thereby reduce the interference between neighbor cell.Compared with prior art, the embodiment of the present invention can be analyzed for the communication conditions of terminal equipment, and determine to disturb based on analysis result the concrete mode of controlling, disturb the concrete mode of control to comprise the transmitting power of distributing different frequency resources or adjustment terminal equipment for the terminal equipment in different districts, and can avoid because the problem that the data transmission performance that the transmitting power of reduction terminal equipment causes reduces for the terminal equipment in different districts distributes the interference control mode of different frequency resources.Compared to existing technology, with power control techniques, disturb control merely, the embodiment of the present invention can be selected suitable interference control mode based on terminal equipment communication conditions, thereby has extenuated the problem that in prior art, the data transmission performance in wireless network reduces because of the terminal equipment that only uses this single interference control mode of power control techniques to cause.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually referring to, each embodiment stresses is the difference with other embodiment.Especially, for apparatus embodiments, because it is substantially similar in appearance to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (16)
1. an interference control method, for a kind of wireless telecommunication system, it is characterized in that, described wireless telecommunication system comprises adjacent at least Liang Ge community, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and described method comprises:
Utilize channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Determine the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
2. interference control method according to claim 1, is characterized in that, described signal that described channel estimation results determines described first terminal equipment and the equivalent coefficient correlation between interference noise utilized comprises:
According to described channel estimation results, determine the autocorrelation matrix of the up channel that described first terminal equipment is used, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H;
Obtain the interference noise covariance matrix of the up channel that described first terminal equipment uses;
Utilize the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
3. according to interference control method described in claim 1 or 2, it is characterized in that, distribute to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
4. according to interference control method described in claims 1 to 3 any one, it is characterized in that, the maximum that described equivalent coefficient correlation is more than or equal to described default thresholding is: described equivalent coefficient correlation is more than or equal to the second thresholding; Described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding.
5. according to interference control method described in claim 1 or 2 or 4, it is characterized in that, also comprise:
If described equivalent coefficient correlation is more than or equal to described the first thresholding and is less than described the second thresholding, according to preset rules, reduce described first terminal transmitting power of equipment.
6. the network equipment, for a kind of wireless telecommunication system, it is characterized in that, described wireless telecommunication system comprises adjacent at least Liang Ge community, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and the described network equipment comprises:
Analysis module, for utilizing described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Control module, for determining the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
7. the network equipment according to claim 6, is characterized in that, described analysis module comprises:
The first analytic unit, for determine the autocorrelation matrix of the up channel that described first terminal equipment is used according to described channel estimation results, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H;
The second analytic unit, for obtaining the interference noise covariance matrix of the up channel that described first terminal equipment uses;
The 3rd analytic unit, for utilizing the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
8. according to the network equipment described in claim 6 or 7, it is characterized in that, distribute to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
9. according to the network equipment described in claim 6 to 8 any one, it is characterized in that, the maximum that described equivalent coefficient correlation is more than or equal to described default thresholding is: described equivalent coefficient correlation is more than or equal to the second thresholding, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding;
Described control module, for being more than or equal to described the second thresholding when described equivalent coefficient correlation, is also the frequency resource of described first terminal devices allocation appointment.
10. according to the network equipment described in claim 6 or 7 or 9, it is characterized in that, also comprise:
Described control module, if be also more than or equal to described the first thresholding and be less than described the second thresholding for described equivalent coefficient correlation, reduces described first terminal transmitting power of equipment according to preset rules.
11. 1 kinds of computing node equipment, it is characterized in that, described computing node comprises: processor, communication interface, memory, bus, described processor, described communication interface and described memory, by described bus, complete mutual communicating by letter, described memory needs the data of storage for storing described computing node at running; Described wireless telecommunication system comprises adjacent at least Liang Ge community, and first terminal equipment is arranged in the first community, and the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and described computing node comprises:
Described processor, for utilizing described channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Described processor, also for determining the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it by described communication interface, is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
12. according to computing node equipment described in claim 11, it is characterized in that, described processor, also for:
According to described channel estimation results, determine the autocorrelation matrix of the up channel that described first terminal equipment is used, wherein, R
hh=H*H ＇, R
hhthe autocorrelation matrix that represents the up channel that described first terminal equipment is used, H represents described channel estimation results, H ＇ represents the transpose conjugate matrix of H;
And cross the interference noise covariance matrix that described communication interface is obtained the up channel that described first terminal equipment uses;
Recycle the autocorrelation matrix of the up channel that described first terminal equipment uses and signal that described interference noise covariance matrix is determined described first terminal equipment and the equivalent coefficient correlation between interference noise, wherein, ρ
eff=trace (R
hh* R
uu)/(trace (R
hh) * trace (R
uu)), ρ
effrepresent the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise, R
uuthe interference noise covariance matrix that represents the up channel that described first terminal equipment is used, trace represents Matrix Calculating mark.
13. according to computing node equipment described in claim 11 or 12, it is characterized in that, distributes to the frequency resource of described appointment of described first terminal equipment and the orthogonal thereto relation of frequency resource that described the second terminal equipment is used.
14. according to claim 11 to computing node equipment described in 13 any one, it is characterized in that, the maximum that described equivalent coefficient correlation is more than or equal to described default thresholding is: described equivalent coefficient correlation is more than or equal to the second thresholding, described default thresholding comprises the first thresholding and the second thresholding, and the first thresholding is less than the second thresholding; Described processor, if be also more than or equal to described the second thresholding for described equivalent coefficient correlation, is the frequency resource of described first terminal devices allocation appointment.
15. according to computing node equipment described in claim 11 or 12 or 14, it is characterized in that, also comprises:
Described processor, if be also more than or equal to described the first thresholding and be less than described the second thresholding for described equivalent coefficient correlation, reduces described first terminal transmitting power of equipment according to preset rules by described communication interface.
16. 1 kinds of computer programs that disturb control, for a kind of wireless telecommunication system, it is characterized in that, described wireless telecommunication system comprises adjacent at least Liang Ge community, first terminal equipment is arranged in the first community, the second terminal equipment is positioned at the edge of second community adjacent with described the first community, and computer program comprises the computer-readable recording medium of having stored program code, the instruction that described program code comprises for:
Utilize channel estimation results to determine the signal of described first terminal equipment and the equivalent coefficient correlation between interference noise; Described channel estimation results is the channel estimation results of the up channel that uses of described first terminal equipment;
Determine the relation of described equivalent coefficient correlation and default thresholding, if described equivalent coefficient correlation is more than or equal to the maximum of described default thresholding, it is the frequency resource of described first terminal devices allocation appointment, wherein, distribute to the frequency resource of described appointment of described first terminal equipment different from the frequency resource that described the second terminal equipment is used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/078188 WO2014205741A1 (en) | 2013-06-27 | 2013-06-27 | Interference control method and network device |
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| Publication Number | Publication Date |
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| CN103650563A true CN103650563A (en) | 2014-03-19 |
| CN103650563B CN103650563B (en) | 2017-07-21 |
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| WO (1) | WO2014205741A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204817A (en) * | 2016-03-16 | 2017-09-26 | 电信科学技术研究院 | A kind of interference detection method and terminal |
| CN109150364A (en) * | 2017-06-28 | 2019-01-04 | 展讯通信（上海）有限公司 | Mobile terminal and its interference noise estimation method, computer readable storage medium |
| CN110519291A (en) * | 2019-09-04 | 2019-11-29 | 电子科技大学 | Authentication data transmission method and system based on edge calculations and channel relevancy |
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|---|---|---|---|---|
| US7480497B2 (en) * | 2005-06-29 | 2009-01-20 | Intel Corporation | Multicarrier receiver and method for carrier frequency offset correction and channel estimation for receipt of simultaneous transmissions over a multi-user uplink |
| CN101442752B (en) * | 2007-11-21 | 2010-11-03 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for controlling interference between neighboring districts in base station and user terminal |
| US8238323B2 (en) * | 2009-06-11 | 2012-08-07 | Intel Corporation | OFDMA cellular network and method for mitigating interference |
| CN102377698B (en) * | 2010-08-11 | 2014-05-07 | 华为技术有限公司 | Signal to interference and noise ratio measuring method and apparatus thereof |
| CN102457321B (en) * | 2010-10-26 | 2014-06-04 | 上海贝尔股份有限公司 | Method for predicting down link SINR (Signal-to-Interference and Noise Ratio) in wireless communication system, equipment and base station |
-
2013
- 2013-06-27 WO PCT/CN2013/078188 patent/WO2014205741A1/en active Application Filing
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204817A (en) * | 2016-03-16 | 2017-09-26 | 电信科学技术研究院 | A kind of interference detection method and terminal |
| CN109150364A (en) * | 2017-06-28 | 2019-01-04 | 展讯通信（上海）有限公司 | Mobile terminal and its interference noise estimation method, computer readable storage medium |
| CN109150364B (en) * | 2017-06-28 | 2020-01-31 | 展讯通信（上海）有限公司 | Mobile terminal, interference noise estimation method thereof, and computer-readable storage medium |
| CN110519291A (en) * | 2019-09-04 | 2019-11-29 | 电子科技大学 | Authentication data transmission method and system based on edge calculations and channel relevancy |
| CN110519291B (en) * | 2019-09-04 | 2020-04-03 | 电子科技大学 | Data transmission authentication method and system based on edge calculation and channel correlation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103650563B (en) | 2017-07-21 |
| WO2014205741A1 (en) | 2014-12-31 |
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