CN103139816B - Positioning method and positioning device of interference sources - Google Patents
Positioning method and positioning device of interference sources Download PDFInfo
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- CN103139816B CN103139816B CN201110393831.6A CN201110393831A CN103139816B CN 103139816 B CN103139816 B CN 103139816B CN 201110393831 A CN201110393831 A CN 201110393831A CN 103139816 B CN103139816 B CN 103139816B
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Abstract
The invention provides a positioning method and a positioning device of interference sources. The positioning method includes of determining user equipment (UE) as an interference source user if the UE connected into a network meets a first condition and a second condition simultaneously, wherein the first condition is that measurement value of interference on signal code power (ISCP) is greater than a preset threshold TH of a community, in which the user equipment is located, within T sub-frames after the UE is connected into the network, and the second condition is that misconvergence of user power control occurs in the adjacent communities of the same frequency in a radio network controller (RNC) of the UE within the preset N sub-frames. By means of the positioning method and the positioning device of the interference sources, users causing interference uplift is located accurately.
Description
Technical field
The present invention relates to the interference control technology in mobile communication system, particularly relate to a kind of interference source localization method and device.
Background technology
In current mobile communication system, conventional interference source localization method is the signal strength signal intensity by measuring adjacent area user, using the maximum interference of adjacent area user the strongest for power as local area, orientates interference source user as.If local area user is because the impact that is interfered causes performance severe exacerbation, so just interference source (namely most strong jamming users of power) can be moved, to save local area user by the mode of resource reconfiguration.
The problem of above-mentioned interference source localization method is: the interference major part in network is that mutual competing the lifting of power of multiple user causes, the competing user lifted of initial trigger power is only had to be only real interference source, it may not be wherein prominent to the interference of adjacent area, like this, most strong jamming users of power is orientated as interference source, it is moved, the operation such as power-limiting is difficult to reach the effect controlling interference lifting from root.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of interference source localization method and device, can realize the accurate location to interference source.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A kind of interference source localization method, the method comprises the following steps:
When after user equipment (UE) access network, if meet first condition and second condition simultaneously, then locating this UE is interference source user;
Wherein, described first condition is: in default T subframe after described UE access network, and the recruitment of the interference measure ISCP of community, described UE place is greater than default threshold value TH;
Described second condition is: in the N number of subframe preset, the homogeneous-frequency adjacent-domain in the radio network controller (RNC) of described UE place there occurs user's power control and do not restrain.
A kind of interference source positioner, this device comprises:
Judge module, for when after user equipment (UE) access network, judges whether to meet first condition and second condition simultaneously, and if so, then triggered location module performs;
Locating module, for orientating interference source user as by meeting the described UE meeting first condition and second condition simultaneously simultaneously;
Wherein, described first condition is: in default T subframe after described UE access network, and the recruitment of the interference measure ISCP of community, described UE place is greater than default threshold value TH;
Described second condition is: in the N number of subframe preset, the homogeneous-frequency adjacent-domain in the radio network controller (RNC) of described UE place there occurs user's power control and do not restrain.
In sum, the interference source localization method that the present invention proposes and device, judge when user accesses whether it causes interference lifting, and whether produce corresponding consequence, according to this judged result, accurately can locate the root user causing interference lifting, and then the accuracy of interference control can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with specific embodiment, the present invention is described in further detail.
Core concept of the present invention is: orient the competing user lifted of initial trigger power as interference source, move it, the operation such as power-limiting, then can the lifting of more direct effective net control interference.
The interference source localization method of the embodiment of the present invention one mainly comprises following content:
When after subscriber equipment (UE) access network, if meet first condition and second condition simultaneously, then locating this UE is interference source user.
Described first condition is: in default T subframe after described UE access network, and the recruitment of the interference measure (ISCP) of community, described UE place is greater than default threshold value TH.
Here, first condition, the lifting degree for the ISCP accessing Shi Dui community according to each UE is determined whether this UE causes and is disturbed competing lifting.Can realize by base station the judgement that whether meets this condition in actual applications, and report RNC by it, RNC carries out the location of interference source more accordingly.
Described T, when value is less, can reduce the accuracy of location, when value is larger, then can increase algorithm complex, and judgement time delay is large, and particularly, those skilled in the art can obtain the good T value of accuracy of judgement degree by emulation selection according to actual needs.
Described TH, can arrange suitable value according to TH=Δ ST, and wherein, Δ S is inner-loop power control step-length.
It should be noted that, in T subframe, if there is multiple user to access simultaneously, so will can not determine that to be that wherein the power that causes of which user is competing lift, now can only these users all as being that interference source processes, this will cause certain erroneous judgement.But in the traffic model of reality, the probability that multiple user accesses is less simultaneously, by controlling the time span of judgement, the probability of judging by accident can be controlled.
In order to improve the accuracy of location further, for the value of time decision length T, itself and threshold value TH size can be bound, preferably, about 1.5 times of desirable threshold value TH.Because inner-loop power control adjustment is the step-length of every subframe 1dB, consider that the signal fluctuation that channel fading may cause, T get 1.5 times of threshold value TH comparatively suitable.
Described second condition is: in the N number of subframe preset, the homogeneous-frequency adjacent-domain in the radio network controller (RNC) of described UE place there occurs user's power control and do not restrain.
Second condition is for judging whether competing the lifting of interference causes consequence, namely whether causes the situation that user's power control does not restrain.
Only have competing the lifting of interference to cause consequence, namely meet above-mentioned two conditions simultaneously, just user is orientated as interference source, otherwise do not process, avoid excessive interference process.When above-mentioned two conditions all meet, locating this access user is interference source user, follow-uply can carry out resource reconfiguration or power control Restrainable algorithms to it.
Particularly, described N number of subframe can be in the N number of subframe after described UE access network, also can judge that described first condition meets and described judged result reported in the N number of subframe after RNC for base station
In actual applications, the judgement of second condition can be realized by RNC.Power control does not restrain and existing method can be adopted to realize, and is namely judged lower than the sir target value preset by the large probability of signal-to-noise ratio measurements (SIR).Particularly, described user's power control defining method of not restraining is as follows:
Described RNC judges whether described homogeneous-frequency adjacent-domain that base station reports is in the signal to noise ratio sir measurement value of described N number of subframe, have the described sir measurement value of M subframe to be less than default sir target value, if so, then determine that there occurs user's power control does not restrain.Within such as N subframe, there is the sir measurement value of M subframe all lower than sir target value, M < N, M/N=90%, then judge that there occurs user's power control does not restrain.
During specific implementation, by the relation comparing SIR and SIR Target, the up SIR of NodeB reporting measurement, to the known SIR Target of RNC, RNC, can judge whether power control restrains.RNC can know the homogeneous-frequency adjacent-domain relevant to local area, and the power control convergence situation of homogeneous-frequency adjacent-domain user.
Fig. 1 is the structural representation of the device corresponding with said method, and as shown in Figure 1, this device comprises:
Judge module, for when after user equipment (UE) access network, judges whether to meet first condition and second condition simultaneously, and if so, then triggered location module performs;
Locating module, for orientating interference source user as by meeting the described UE meeting first condition and second condition simultaneously simultaneously;
Wherein, described first condition is: in default T subframe after described UE access network, and the recruitment of the interference measure ISCP of community, described UE place is greater than default threshold value TH;
Described second condition is: in the N number of subframe preset, the homogeneous-frequency adjacent-domain in the radio network controller (RNC) of described UE place there occurs user's power control and do not restrain.
Preferably, described T is 1.5 times of described TH.
Preferably, described judge module, comprise power control further and do not restrain determining unit, described power control does not restrain determining unit, for triggering described homogeneous-frequency adjacent-domain that described RNC judges that base station reports in the signal to noise ratio sir measurement value of described N number of subframe, whether there is the described sir measurement value of M subframe to be less than default sir target value, if so, then determine that there occurs user's power control does not restrain.
Preferably, described N number of subframe is in the N number of subframe after described UE access network, or judges that described first condition meets and described judged result reported in the N number of subframe after RNC for base station.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an interference source localization method, is characterized in that, the method comprises the following steps:
When after user equipment (UE) access network, if meet first condition and second condition simultaneously, then locating this UE is interference source user;
Wherein, described first condition is: in default T subframe after described UE access network, and the recruitment of the interference measure ISCP of community, described UE place is greater than default threshold value TH;
Described second condition is: in the N number of subframe preset, the homogeneous-frequency adjacent-domain in the radio network controller (RNC) of described UE place there occurs user's power control and do not restrain.
2. method according to claim 1, is characterized in that, described T is 1.5 times of described TH.
3. method according to claim 1, is characterized in that, the defining method that described user's power control does not restrain is:
Described RNC judges that described homogeneous-frequency adjacent-domain that base station reports is in the signal to noise ratio sir measurement value of described N number of subframe, the described sir measurement value of M subframe whether is had to be less than default sir target value, if so, then determine that there occurs user's power control does not restrain, M<N.
4. method according to claim 1, is characterized in that, described N number of subframe is in the N number of subframe after described UE access network, or judges that described first condition meets and described judged result reported in the N number of subframe after RNC for base station.
5. an interference source positioner, is characterized in that, this device comprises:
Judge module, for when after user equipment (UE) access network, judges whether to meet first condition and second condition simultaneously, and if so, then triggered location module performs;
Locating module, for orientating the UE meeting described first condition and second condition as interference source user simultaneously;
Wherein, described first condition is: in default T subframe after described UE access network, and the recruitment of the interference measure ISCP of community, described UE place is greater than default threshold value TH;
Described second condition is: in the N number of subframe preset, the homogeneous-frequency adjacent-domain in the radio network controller (RNC) of described UE place there occurs user's power control and do not restrain.
6. device according to claim 5, is characterized in that, described T is 1.5 times of described TH.
7. device according to claim 5, it is characterized in that, described judge module, comprise power control further and do not restrain determining unit, described power control does not restrain determining unit, for triggering described homogeneous-frequency adjacent-domain that described RNC judges that base station reports in the signal to noise ratio sir measurement value of described N number of subframe, the described sir measurement value of M subframe whether is had to be less than default sir target value, if so, then determine that there occurs user's power control does not restrain, M<N.
8. device according to claim 5, is characterized in that, described N number of subframe is in the N number of subframe after described UE access network, or judges that described first condition meets and described judged result reported in the N number of subframe after RNC for base station.
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| CN101729163A (en) * | 2008-10-20 | 2010-06-09 | 大唐移动通信设备有限公司 | Method and equipment for determining interference source of mobile communication |
| CN102223679A (en) * | 2011-07-12 | 2011-10-19 | 电信科学技术研究院 | Method and equipment for processing load congestion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101729163A (en) * | 2008-10-20 | 2010-06-09 | 大唐移动通信设备有限公司 | Method and equipment for determining interference source of mobile communication |
| CN102223679A (en) * | 2011-07-12 | 2011-10-19 | 电信科学技术研究院 | Method and equipment for processing load congestion |
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