CN102387518A - Method for testing radio interference of time division-synchronous code division multiple access (TD-SCDMA) - Google Patents
Method for testing radio interference of time division-synchronous code division multiple access (TD-SCDMA) Download PDFInfo
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- CN102387518A CN102387518A CN2010102721641A CN201010272164A CN102387518A CN 102387518 A CN102387518 A CN 102387518A CN 2010102721641 A CN2010102721641 A CN 2010102721641A CN 201010272164 A CN201010272164 A CN 201010272164A CN 102387518 A CN102387518 A CN 102387518A
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Abstract
The invention relates to a method for testing radio interference of time division-synchronous code division multiple access (TD-SCDMA), which comprises the following steps that: 1) a plot access success rate and an uplink synchronous time-slot interference signal code domain power of a recent period of time are acquired from a radio base station operation maintenance center; 2) a base station database and an electronic map of a tested region are acquired from the local party; 3) regions which are possibly interfered by the uplink synchronous time slot are determined; 4) a test circuit is selected; 5) data are collected; 6) whether the uplink synchronous time-slot interference exists is judged according to a time migration amount, if the uplink synchronous time-slot interference exists, a step 7) is executed, and otherwise return to the step 5); 7) an interference source is positioned or re-positioned; 8) whether the positioning is correct is judged, if the positioning is correct, enter the step 9), and otherwise return to the step 7); and 9) a test result is generated. Compared with the prior art, the method has the advantages that the interference source can be founded and the interference among the base stations can be eliminated, so the network capacity can be improved, the network environment can be better optimized and the like.
Description
Technical field
The present invention relates to a kind of air interference method of testing, especially relate to a kind of TD-SCDMA air interference method of testing.
Background technology
Because the TD-SCDMA system adopts TDD mode, keep synchronously between the different base station.The downlink information that launch base station may arrive because of the up receiving slot of reason in another base station of propagation delay, thereby influences the reception of another base station to uplink information.Especially the time slot of TS0 (time slot 0) and this theaomni-directional transmission of DwPTS (downlink synchronization slot) then can cause more serious disturbance.The up-downgoing protection time slot GP that 75us is arranged behind the DwPTS time slot is if propagation delay, will disturb the UpPTS (uplink synchronous time slot) of another base station greater than 75us.That is to say that the distance between two base stations can not surpass 22.5km, and (75us * 3 * m/s), this also is that the UpPTS that often says at ordinary times disturbs.The base station power of DwPTS is far longer than the power that UPPTS goes up mobile phone; The interference that these two time slots form will directly cause normally access network of user; Even access network; The probability of call drop also can improve greatly in the handoff procedure, and its consequence is the deterioration of call completing rate and cutting off rate index, and is very harmful.From the situation that real network is recognized, be that the intrinsic reason of TD-SCDMA produces owing to UpPTS disturbs, this interference is a universal phenomenon, some big and medium-sized cities plans owing to arranging net early stage or receives the restriction of region that UpPTS disturbs especially outstanding unreasonable.
Location that UP disturbs in the network optimization work and processing are difficult points; Up Shifting (up translation) technology that adopts at present is to be the solution of cost to sacrifice the base station capacity; The cost that uses along with this technology of user's increase can increase greatly; The most effectively settling mode is to search interference source to eliminate the interference between the base station; But present situation is a base station equipment self-checking function in UP ISCP (uplink interference signal code territory) is arranged, but do not have good method to come the interference source of orientation problem base station, can only take time and effort through a large amount of location of loaded down with trivial details switch with the frequency base station.Combine actual network optimization requirements of one's work to far away dependence of this situation wound, for the solution of UP interference problem provides a cover effective solution from the characteristic of grinding equipment.
Summary of the invention
The object of the invention be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of can be through searching interference source, thereby the interference of eliminating between the base station promotes network capacity, better optimizes the TD-SCDMA air interference method of testing of network environment.
The object of the invention can be realized through following technical scheme: a kind of TD-SCDMA air interference method of testing; It is characterized in that this method may further comprise the steps: 1) operation maintenance center obtains sub-district call completing rate, the uplink synchronous slot interfering signal of time code domain power of nearly a period of time from the wireless base station; 2) obtain tested regional base station data storehouse, electronic chart from office side; 3) confirm the sub-district that the uplink synchronous time slot possibly disturbed; 4) selected measurement circuit; 5) image data; 6) judge whether to be the uplink synchronous time slot interference according to time offset, be then carry out step 7) if be judged as, otherwise return step 5); 7) carrying out interference source locatees or reorientates; 8) judge whether the location is correct, be then carry out step 9) if be judged as, otherwise return step 7); 9) generate test result.
Nearly a period of time in the described step 1) is nearly 1～2 day.
Described step 3) is confirmed the sub-district that the uplink synchronous time slot possibly disturbed; For analyzing the traffic statistics data in the wireless base station operation maintenance center; Observe the interference signal code domain power on sub-district call completing rate, cutting off rate, uplink synchronous slot interfering signal of time code domain power and the time slot 1, thereby confirm the sub-district that the uplink synchronous time slot possibly disturbed.
Data in the described step 5) image data comprise the acknowledge(ment) signal code domain power, interference signal code domain power, time offset, carrier/interface ratio.
Described step 7) is carried out the interference source location, is specially the cell frequency that is disturbed according to the uplink synchronous time slot and carries out same frequency analysis, combines azimuth and distance to carry out the location of interference source simultaneously.
Described step 7) is reorientated, and is specially through revising parameter to come doubtful interference source is reorientated.
Described modification parameter comprises revises frequency and/or scrambler parameter.
Compared with prior art, the present invention has the following advantages:
1, provide a cover effective solution for the solution of UP interference problem;
2, can eliminate the interference between the base station through searching interference source;
3, promote network capacity, better optimize network environment.
Description of drawings
Fig. 1 is the inventive method schematic flow sheet;
Fig. 2 is apparatus of the present invention structural representation.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
As shown in Figure 1, a kind of TD-SCDMA air interference method of testing, this method may further comprise the steps:
Step 1: the operation maintenance center from the wireless base station (OMCR) obtains nearly 1～2 day sub-district call completing rate, uplink synchronous slot interfering signal of time code domain power (UpPTS ISCP).
Step 2: obtain tested regional base station data storehouse from office side, electronic chart.
Step 3: analyze the traffic statistics data in the wireless base station operation maintenance center; Observe the interference signal code domain power on sub-district call completing rate, cutting off rate, uplink synchronous slot interfering signal of time code domain power and the time slot 1 (TS1), thus definite sub-district that possibly receive uplink synchronous time slot interference (UpPTS).
Step 4: selected measurement circuit.
Step 5: gather the acknowledge(ment) signal code domain power, interference signal code domain power, time offset, carrier/interface ratio.
Step 6: judge whether to be the uplink synchronous time slot interference according to time offset, be then carry out step 7 if be judged as, otherwise return step 5.
Step 7: the cell frequency that is disturbed according to the uplink synchronous time slot carries out same frequency analysis, combines azimuth and distance to carry out the location of interference source simultaneously; Come doubtful interference source is reorientated through revising frequency and/or scrambler parameter.
Step 8: judge whether the location is correct, be then carry out step 9 if be judged as, otherwise return step 7;
Step 9: generate test result.
This method can realize that this device comprises radio-frequency antenna 201, gps antenna 202, multi-modulation scheme scanner 203, PC 204 through the device shown in Fig. 2.Radio-frequency antenna 201, gps antenna 202 are connected with multi-modulation scheme scanner 203 respectively, and multi-modulation scheme scanner 203 is connected with PC 204.
Claims (7)
1. TD-SCDMA air interference method of testing is characterized in that this method may further comprise the steps:
1) operation maintenance center obtains sub-district call completing rate, the uplink synchronous slot interfering signal of time code domain power of nearly a period of time from the wireless base station;
2) obtain tested regional base station data storehouse, electronic chart from office side;
3) confirm the sub-district that the uplink synchronous time slot possibly disturbed;
4) selected measurement circuit;
5) image data;
6) judge whether to be the uplink synchronous time slot interference according to time offset, be then carry out step 7) if be judged as, otherwise return step 5);
7) carrying out interference source locatees or reorientates;
8) judge whether the location is correct, be then carry out step 9) if be judged as, otherwise return step 7);
9) generate test result.
2. a kind of TD-SCDMA air interference method of testing according to claim 1 is characterized in that the nearly a period of time in the described step 1) is nearly 1～2 day.
3. a kind of TD-SCDMA air interference method of testing according to claim 1; It is characterized in that; Described step 3) is confirmed the sub-district that the uplink synchronous time slot possibly disturbed; For analyzing the traffic statistics data in the wireless base station operation maintenance center, observe the interference signal code domain power on sub-district call completing rate, cutting off rate, uplink synchronous slot interfering signal of time code domain power and the time slot 1, thereby confirm the sub-district that the uplink synchronous time slot possibly disturbed.
4. a kind of TD-SCDMA air interference method of testing according to claim 1 is characterized in that the data in the described step 5) image data comprise the acknowledge(ment) signal code domain power, interference signal code domain power, time offset, carrier/interface ratio.
5. a kind of TD-SCDMA air interference method of testing according to claim 1; It is characterized in that; Described step 7) is carried out the interference source location, is specially the cell frequency that is disturbed according to the uplink synchronous time slot and carries out same frequency analysis, combines azimuth and distance to carry out the location of interference source simultaneously.
6. a kind of TD-SCDMA air interference method of testing according to claim 1 is characterized in that described step 7) is reorientated, and is specially through revising parameter to come doubtful interference source is reorientated.
7. a kind of TD-SCDMA air interference method of testing according to claim 6 is characterized in that, described modification parameter comprises revises frequency and/or scrambler parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102721641A CN102387518A (en) | 2010-09-02 | 2010-09-02 | Method for testing radio interference of time division-synchronous code division multiple access (TD-SCDMA) |
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| CN2010102721641A CN102387518A (en) | 2010-09-02 | 2010-09-02 | Method for testing radio interference of time division-synchronous code division multiple access (TD-SCDMA) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103067098A (en) * | 2012-12-04 | 2013-04-24 | 大唐移动通信设备有限公司 | Method and system of searching interference source location |
| CN111093218A (en) * | 2018-10-23 | 2020-05-01 | 大唐移动通信设备有限公司 | Interference analysis method and device |
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| CN1809202A (en) * | 2006-02-14 | 2006-07-26 | 信息产业部电信传输研究所 | System and method of testing effects of interference between mobile communication systems |
| CN101447824A (en) * | 2007-11-26 | 2009-06-03 | 大唐移动通信设备有限公司 | Method for finding GPS timing offset of TD-SCDMA base station and device thereof |
| CN101562822A (en) * | 2008-04-16 | 2009-10-21 | 大唐移动通信设备有限公司 | Method and device for detecting asynchronization between base stations |
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2010
- 2010-09-02 CN CN2010102721641A patent/CN102387518A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1809202A (en) * | 2006-02-14 | 2006-07-26 | 信息产业部电信传输研究所 | System and method of testing effects of interference between mobile communication systems |
| CN101447824A (en) * | 2007-11-26 | 2009-06-03 | 大唐移动通信设备有限公司 | Method for finding GPS timing offset of TD-SCDMA base station and device thereof |
| CN101562822A (en) * | 2008-04-16 | 2009-10-21 | 大唐移动通信设备有限公司 | Method and device for detecting asynchronization between base stations |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103067098A (en) * | 2012-12-04 | 2013-04-24 | 大唐移动通信设备有限公司 | Method and system of searching interference source location |
| CN111093218A (en) * | 2018-10-23 | 2020-05-01 | 大唐移动通信设备有限公司 | Interference analysis method and device |
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