CN102355681B - Method for detecting interference in long-term evolution system and equipment - Google Patents
Method for detecting interference in long-term evolution system and equipment Download PDFInfo
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- CN102355681B CN102355681B CN201110303543.7A CN201110303543A CN102355681B CN 102355681 B CN102355681 B CN 102355681B CN 201110303543 A CN201110303543 A CN 201110303543A CN 102355681 B CN102355681 B CN 102355681B
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Abstract
The invention discloses a method for detecting interference in a long-term evolution (LTE) system and equipment. The method comprises the following steps that: if a current community is in an uplink time slot, no user has accesses into the community and signals can be stilled received, the power of each RE in the packet receive buffers (PRBs) of a plurality of continuous uplink sub-frames is detected, wherein one PRB comprises a plurality of symbols in a time domain, and each symbol comprises a plurality of REs in a frequency domain; and if the power intensity of the REs is higher than the set intensity periodically on one symbol, the interference of the current community by downlink transmission signals of an adjacent community is determined. Consequently, according to the invention, the sources and the causes of the outside interference an be quickly and accurately positioned when a base station is interfered by the outside environment, so that the interference detection efficiency is improved.
Description
Technical field
The present invention relates to long evolving system field, particularly in a kind of long evolving system, detect the method and apparatus disturbing.
Background technology
At time division duplex (Time Division Duplexing, TDD) Long Term Evolution (Long Term Evolution, LTE) in the ascending time slot of system, base station is receiving from user terminal (User Equipment, during signal UE), can be subject to the interference from various interference sources, but, because LTE system uplink design comparison is perfect, user's frequency division, and the mode that user data has adopted scrambling and interweaved, has avoided other users' interference to a great extent.But, if while there is no uplink UE, can the be interfered impact of signal of base station.
In the descending time slot of TDD LTE system, base station sends data to user's travelling carriage, and the power that base station sends data to user's travelling carriage will be far longer than the power of user's travelling carriage to base station transmission data.So, if the base station of the first community is in ascending time slot, and the base station of second community adjacent with the first community is in descending time slot, the base station of the first community is in the signal receiving from UE so, also can receive the transmitted signal of the base station of the second community, the normal work of the base station of transmitted signal meeting severe jamming first community of the base station of this second community, makes to be submerged in interference noise from the user data of UE.
If the base station of a community is cisco unity malfunction due to external interference, but can not locate rapidly and accurately again the source of this external interference and produce reason, so just be difficult to eliminate this external interference, also just can not make affected base station return to rapidly normal operating state.
Summary of the invention
The embodiment of the present invention provides in a kind of LTE system and detects the method and apparatus disturbing, and while being subject to external interference in order to the base station of Yi community, can locating rapidly and accurately the source of this external interference and produce reason, improves and detects the efficiency of disturbing.
In a kind of LTE system that the embodiment of the present invention provides detect disturb method comprise:
If this community is current when ascending time slot no user accesses, still can receive signal,
Detect Physical Resource Block (the Physical Resource Block of several continuous sub-frame of uplink, PRB) each resource particle (Resource Element in, RE) power, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain;
If periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.
A kind of base station that the embodiment of the present invention provides comprises:
Detecting unit, if current when the access of ascending time slot and no user for this community, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain;
The first determining unit, if be greater than setting intensity for the power level that periodically occurs RE on a symbol, determines that this community is subject to the interference of adjacent cell downlink signal.
As seen through the above technical solutions, the embodiment of the present invention is in LTE system, if this community is current when ascending time slot and no user access, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain; If periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.Therefore, when the embodiment of the present invention can be subject to external interference in community, can locate rapidly and accurately the source of this external interference and produce reason, improve and detect the efficiency of disturbing, and then safeguard for source and the generation reason of this external interference, eliminate this external interference, make base station can return to rapidly normal operating state.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the inventive method embodiment;
Fig. 2 is the schematic flow sheet of a specific embodiment of the inventive method;
Fig. 3 is the schematic flow sheet of another specific embodiment of the inventive method;
Fig. 4 is the structural representation of base station in the embodiment of the present invention.
Embodiment
The embodiment of the present invention is in LTE system, if this community is current when ascending time slot and no user access, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain; If periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.
Fig. 1 is the schematic flow sheet of the specific embodiment of the inventive method.
Shown in Figure 1, the embodiment of the present invention provide in LTE system detect disturb method specifically comprise following step:
Step 101: if this community is current when ascending time slot and no user access, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain.
Step 102: if periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.
Here, the described power level that periodically occurs RE is greater than and sets intensity and comprise: the power level of every setting number RE of RE appearance is greater than setting intensity, and described setting number is 3 or 6.
Fig. 2 is the schematic flow sheet of a specific embodiment of the inventive method.
Shown in Figure 2, the embodiment of the present invention in LTE system, detect disturb method specifically comprise following step:
Step 201: if this community is current when ascending time slot and no user access, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain.
Step 202: if periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.
Here, the described power level that periodically occurs RE is greater than and sets intensity and comprise: the power level of every setting number RE of RE appearance is greater than setting intensity, and described setting number is 3 or 6.
Step 203: if this symbol and the position consistency of setting symbol are further determined to disturb to produce former because the sub-frame configuration of this community and adjacent cell is inconsistent.
Here, described setting symbol is the symbol in reference signal mapping graph in third generation partner program (The 3rd Generation Partnership Project, 3GPP) 36.211 agreements with reference signal.
Fig. 3 is the schematic flow sheet of another specific embodiment of the inventive method.
Shown in Figure 3, the embodiment of the present invention in LTE system, detect disturb method specifically comprise following step:
Step 301: if this community is current when ascending time slot and no user access, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain.
Step 302: if periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.
Here, the described power level that periodically occurs RE is greater than and sets intensity and comprise: the power level of every setting number RE of RE appearance is greater than setting intensity, and described setting number is 3 or 6.
Step 303: if be separated by several symbols between this symbol and setting symbol, further determine that interference produces former because or whole global positioning system (Global Positioning System, GPS) sideslips in this community and adjacent cell.
Here, described setting symbol is the symbol in reference signal mapping graph in 3GPP 36.211 agreements with reference signal.
Then for disturbing generation reason to get rid of this interference, if disturbed, produce former because the sub-frame configuration of this community and adjacent cell is inconsistent, revise the sub-frame configuration of this community or adjacent cell, make the sub-frame configuration of the two consistent; If disturb generation former in one or whole GPS sideslips in this community and adjacent cell, the GPS of the community that GPS sideslip occurs adjusted.Thisly for disturbing source and disturbing, produce the former thereby maintenance carried out, not only rapidly but also accurate, made affected base station can quickly recover to normal operating state.
Fig. 4 is the structural representation of base station in the embodiment of the present invention.
Shown in Figure 4, the base station that the embodiment of the present invention provides comprises: detecting unit 41 and the first determining unit 42;
Detecting unit 41, if current when the access of ascending time slot and no user for this community, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain;
The first determining unit 42, if be greater than setting intensity for the power level that periodically occurs RE on a symbol, determines that this community is subject to the interference of adjacent cell downlink signal.
Here, if described the first determining unit 42 occurs that for the RE of every setting number on a symbol power level of a RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal, described setting number is 3 or 6.
After described the first determining unit 42 determines that this community is subject to the interference of adjacent cell downlink signal, this base station further comprises:
The second determining unit, if for this symbol and the position consistency of setting symbol, further determines to disturb to produce former because the sub-frame configuration of this community and adjacent cell is inconsistent.
After described the first determining unit 42 determines that this community is subject to the interference of adjacent cell downlink signal, this base station further comprises:
The 3rd determining unit, if for several symbols of being separated by between this symbol and setting symbol, further determines that interference produces former in one or whole global position system GPS sideslips in this community and adjacent cell.
Described the second determining unit and described the 3rd determining unit are further determining the symbol that disturbs the setting symbol utilizing while producing reason to have reference signal in for third generation partner program 3GPP 36.211 agreements in reference signal mapping graph.
As seen through the above technical solutions, the embodiment of the present invention is in LTE system, if this community is current when ascending time slot and no user access, still can receive signal, detect the power of the interior each RE of PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain; If periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal.Therefore, the embodiment of the present invention can Yi community base station while being subject to external interference, can locate rapidly and accurately the source of this external interference and produce reason, improve and detect the efficiency of disturbing, and then safeguard for source and the generation reason of this external interference, eliminate this external interference, make base station can return to rapidly normal operating state.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. in Long Term Evolution LTE system, detect a method of disturbing, it is characterized in that, the method comprises:
If this community is current when ascending time slot and no user access, still can receive signal,
The power that detects the interior each resource particle RE of Physical Resource Block PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, each symbol comprises multiple RE on frequency domain;
If periodically occur that on a symbol power level of RE is greater than setting intensity, determine that this community is subject to the interference of adjacent cell downlink signal;
If this symbol and the position consistency of setting symbol, determine to disturb to produce former because the sub-frame configuration of this community and adjacent cell is inconsistent;
If be separated by several symbols between this symbol and setting symbol, determine that interference produces former because or whole global position system GPS sideslips in this community and adjacent cell.
2. the method for claim 1, is characterized in that, the described power level that periodically occurs RE is greater than to be set intensity and comprise:
Every setting number RE occurs that the power level of a RE is greater than setting intensity.
3. method as claimed in claim 2, is characterized in that, described setting number is 3 or 6.
4. the method for claim 1, is characterized in that, described setting symbol is the symbol in reference signal mapping graph in third generation partner program 3GPP36.211 agreement with reference signal.
5. a base station, is characterized in that, this base station comprises:
Detecting unit, if it is current when ascending time slot and no user access to be used for this community, still can receive signal, detect the power of the interior each resource particle RE of Physical Resource Block PRB of several continuous sub-frame of uplink, wherein, a PRB comprises multiple symbols in time domain, and each symbol comprises multiple RE on frequency domain;
The first determining unit, if be greater than setting intensity for the power level that periodically occurs RE on a symbol, determines that this community is subject to the interference of adjacent cell downlink signal;
The second determining unit, if for this symbol and the position consistency of setting symbol, determines to disturb to produce former because the sub-frame configuration of this community and adjacent cell is inconsistent;
The 3rd determining unit, if for several symbols of being separated by between this symbol and setting symbol, determines that interference produces former because or whole global position system GPS sideslips in this community and adjacent cell.
6. base station as claimed in claim 5, is characterized in that, if described the first determining unit occurs that for the RE of every setting number on a symbol power level of a RE is greater than setting intensity, determines that this community is subject to the interference of adjacent cell downlink signal.
7. base station as claimed in claim 6, is characterized in that, described setting number is 3 or 6.
8. base station as claimed in claim 5, it is characterized in that, described the second determining unit and described the 3rd determining unit are disturbed the symbol that produces the setting symbol utilizing during reason and have in reference signal mapping graph in for the third generation partner program 3GPP36.211 agreement reference signal determining.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103517313B (en) * | 2012-06-21 | 2016-10-05 | 中国移动通信集团设计院有限公司 | A kind of method and apparatus detecting interference signal |
| CN103874217B (en) * | 2014-03-17 | 2017-06-13 | 大唐移动通信设备有限公司 | Up anti-disturbance method and equipment in TDD LTE systems |
| CN104581765B (en) * | 2014-12-09 | 2018-02-23 | 大唐移动通信设备有限公司 | A kind of method and apparatus of alien frequencies Interference Detection |
| CN107294636B (en) * | 2016-03-30 | 2020-09-01 | 中兴通讯股份有限公司 | Detection method and device for eliminating co-channel interference |
| CN109525519A (en) * | 2017-09-19 | 2019-03-26 | 晨星半导体股份有限公司 | Symbol rate estimation device, symbol rate estimating method and adjacent channel interference detecting apparatus |
| CN111800813B (en) * | 2019-04-08 | 2021-10-29 | 大唐移动通信设备有限公司 | Method and device for detecting narrow-band signal interference |
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| CN101494896A (en) * | 2008-01-25 | 2009-07-29 | 中兴通讯股份有限公司 | Method for coordinating interference between districts of relay wireless communication network |
| CN101990216A (en) * | 2009-08-04 | 2011-03-23 | 鼎桥通信技术有限公司 | Method for detecting interference source outside cell in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system |
| EP2373094A1 (en) * | 2008-12-26 | 2011-10-05 | Sharp Kabushiki Kaisha | Base station device, mobile station device, communication system, and communication method |
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| CN101494896A (en) * | 2008-01-25 | 2009-07-29 | 中兴通讯股份有限公司 | Method for coordinating interference between districts of relay wireless communication network |
| EP2373094A1 (en) * | 2008-12-26 | 2011-10-05 | Sharp Kabushiki Kaisha | Base station device, mobile station device, communication system, and communication method |
| CN101990216A (en) * | 2009-08-04 | 2011-03-23 | 鼎桥通信技术有限公司 | Method for detecting interference source outside cell in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system |
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