CN1162016C - Upstream frequency spot scanning device and method of measuring interference in global mobile communication system - Google Patents
Upstream frequency spot scanning device and method of measuring interference in global mobile communication system Download PDFInfo
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- CN1162016C CN1162016C CNB011262990A CN01126299A CN1162016C CN 1162016 C CN1162016 C CN 1162016C CN B011262990 A CNB011262990 A CN B011262990A CN 01126299 A CN01126299 A CN 01126299A CN 1162016 C CN1162016 C CN 1162016C
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Abstract
The present invention relates to a device and a method for measuring interference in global mobile communication systems in an upper line frequency point scanning technique. A base station device of a GSM system is used for measuring the interference of some specified frequency points in environmental noise and the mutual interference of frequency points in each district of the GSM system, which is used as a referred technology for network optimization. The method uses a free TACH/FS time slot for integrally scanning frequency points which need to be measured, and a free frame in a multi-frame 26 of the TACH/FS time slot is used for scanning frequency points. The present invention has efficiency that interference can be determined conveniently and effectively, network planning persons can plan frequency points according to the scanning results of frequency points, interference is avoided, and the present invention can serve in searching for interference sources.
Description
Technical field
The present invention relates to adopt in a kind of global system for mobile communications (gsm system) method of up frequency point scanning commercial measurement interference.
Background technology
Up frequency point scanning technology mainly is to utilize the existing base station equipment of gsm system, and the frequency phase mutual interference of the interference of some specific frequency and each sub-district of system in the test environment noise is as the technology of network optimization reference.There is not effective method to determine mutual interference of frequency phase and environmental interference at present.Disturb generally specifically to test by manpower and instrument to get, take time and effort, efficient is extremely low, and as if the frequency adjustment or environment changes, all needs to drop into manpower and materials again and test.
Summary of the invention
The objective of the invention is for a kind of apparatus and method that efficiently adopt up frequency point scanning commercial measurement to disturb easily are provided.
In order to realize purpose of the present invention, the technical scheme that the present invention takes is:
The device that adopts up frequency point scanning commercial measurement to disturb in the global system for mobile communications is characterized in, comprises a mobile switching centre, two base station controllers, three base stations; Described two base station controllers link with mobile switching centre respectively; In described three base stations, wherein two base stations link with a base station controller respectively, and another base station links with another base station controller; The transceiver of described base station comprises that two covers receive phase-locked loop, alternately received signal.
The method that adopts up frequency point scanning commercial measurement to disturb in the global system for mobile communications, be characterized in, comprise the up frequency point scanning of two kinds of situations is measured: (A) initially open fast as far as possible the providing under the disturbed condition of test optimization, needs is provided, utilize idle whole TACH/F (full speed channel) time slot that all frequencies of required measurement are carried out scanning survey at network; (B) when the optimizing and revising of even in everyday situations, the requirement of Measuring Time is no longer occupied main status, what need is can not influence under the situation of regular traffic, utilizes the idle frame in 26 multi-frames of TACH/F (full speed channel) to come the scanning survey frequency;
May further comprise the steps:
A, remote maintenance platform issue the base station after configuring the scanning frequency according to concrete needs, and the base station begins to scan frequency after receiving the order of scanning frequency;
In b, the base station transceiver two cover receives phase-locked loop can replace received signal by time slot, and by transceiver Control work frequency;
C, base station control the frequency that reception pll lock that its current time slots do not work need scan at certain time slot, measure the disturbed condition of this frequency during to next time slot;
After d, measurement are finished, report the remote maintenance platform to add up demonstration.
3, method of carrying out up frequency point scanning according to claim 2 is characterized in that, the described scanning frequency point ranges of step a is optional, can be only one, and also can whole frequency.
Above-mentioned method of carrying out up frequency point scanning, wherein, the idle frame in 26 multi-frames of TACH/F (full speed channel) time slot is last frame in 26 multi-frames.
Above-mentioned method of carrying out up frequency point scanning, wherein, described TACH/F (full speed channel) time slot is the tdma frame structure of TCH/F (traffic channel full rate) and SACCH/F (following the slow associated control channel of TCH/F) combination.
Because the present invention has adopted above technical scheme, utilizes the double reception PHASE-LOCKED LOOP PLL TECHNIQUE of transceiver in the base station and the special construction of TCH/FS time slot, can obtain the disturbed condition of required frequency with the cost of minimum.
Description of drawings
Specific performance of the present invention, measure are further specified by following embodiment and accompanying drawing thereof.
Fig. 1 is the part embodiment schematic diagram of system diagram of the present invention.
Fig. 2 is a frame assumption diagram of the present invention.
Fig. 3 A is that the present invention utilizes whole time slot to measure the schematic diagram of frequency disturbed condition.
Fig. 3 B is that the present invention utilizes 26 idle frames in the multi-frame to measure the schematic diagram of frequency disturbed condition.
Embodiment
As shown in Figure 1, this is the part embodiment schematic diagram of system diagram of the present invention, is the sub-fraction in the simple cellular system, comprises mobile switching centre 10, base station controller 11 and 12, base station 13,14 and 15.Described two base station controllers 11,12 link with mobile switching centre 10 respectively; In described three base stations 13,14,15, two base stations 13,14 link with a base station controller 12 respectively, and another base station 15 links with another base station controller 12.
Up frequency point scanning has two kinds of implementation methods: (1) network is initially opened when carrying out test optimization, what needed this moment is the fast as far as possible disturbed condition that provides, it is not very important whether taking Traffic Channel, then can utilize idle whole TACH/FS time slot (i.e. whole 26 frames in 26 multi-frames) to come all frequencies of required measurement are carried out scanning survey, to obtain disturbance state as early as possible, finish initial optimization; (2) when the optimizing and revising of even in everyday situations, requirement to Measuring Time no longer occupies main status, what needed this moment is to influence regular traffic, then can utilize that idle frame (i.e. last frame in 26 multi-frames) in 26 multi-frames of TACH/FS to come the scanning survey frequency.
Wireless (Um) interface synthesis in the gsm system frequency division multiple access (FDMA) and two kinds of technology of time division multiple access (TDMA).A radio-frequency channel comprises 8 physical channels, and the sequence number that each physical channel can occur in tdma frame with its slit is distinguished, and this sequence number is called timeslot number (time slot number).A tdma frame duration 4.615ms (120/26ms) is made up of 8 time slots.A plurality of tdma frames constitute multi-frame (Multiframe), and its structure has two kinds, is respectively 26 multi-frames and 51 multi-frames.The cycle of 26 multi-frame structures is 120ms, contains 26 tdma frames, is used for Traffic Channel and associated control channel thereof.The cycle of 51 multi-frame structures is 3060/13ms, contains 51 tdma frames, is used for control channel.
Fig. 2 is the tdma frame structure of TCH/FS of the present invention (traffic channel full rate)+SACCH/FS (full rate is the channel associated signalling channel at a slow speed).TACH/FS (or TCH/FS and SACCH group) is 26 multi-frame structures, on time-domain, be the cycle with 26 tdma frames, in 26 tdma frames, 24 transmissions that are used for TCH/FS, a transmission (the 12nd frame as shown in Figure 2) that is used for SACCH, a free time (the 25th frame as shown in Figure 2).
The method that the present invention adopts up frequency point scanning commercial measurement to disturb, comprise the up frequency point scanning of two kinds of situations is measured: (1) is under general case, network is initially opened when carrying out test optimization, what needed this moment is the fast as far as possible disturbed condition that provides, it is not very important whether taking Traffic Channel, then can utilize idle whole TACH/FS time slot that all frequencies of required measurement are carried out scanning survey; (2) when the optimizing and revising of even in everyday situations, the requirement of Measuring Time is no longer occupied main status, what need is can not influence under the situation of regular traffic, utilizes the idle frame in 26 multi-frames of TACH/FS to come the scanning survey frequency; The steps include:
A, remote maintenance platform issue the base station after configuring the scanning frequency according to concrete needs, and the base station begins to scan frequency after receiving the order of scanning frequency;
Two covers of the transceiver of b, base station receive phase-locked loop and replace received signal;
The frequency that c, its current reception pll lock of not working of base stations control need scan is measured the disturbed condition of this frequency;
After d, measurement are finished, report the remote maintenance platform to add up demonstration.
The use of said method is not limited to above-mentioned two kinds of situations, and in some cases, for example less the and interference variations area faster the user can only utilize idle whole TACH/FS time slot that all frequencies of required measurement are carried out scanning survey; More and the interference variations area slowly the user can only utilize the idle frame in 26 multi-frames of TACH/FS to come the scanning survey frequency.
When concrete scanning was disturbed, the frequency of wanting to scan was controlled by the remote maintenance platform, issues the order of scanning frequency and give the base station after maintenance console configures the scanning frequency, and the scanning frequency point ranges is optional, can be only one, also can whole frequency, and according to concrete needs configuration.The base station begins to scan frequency after receiving the order of scanning frequency.Finish the scanning frequency, need the transceiver of base station to have two covers and receive phase-locked loops (not shown), and can the alternation received signal, and the locked frequency point of phase-locked loop is controlled by transceiver.The base station of present embodiment is provided with two covers and receives phase-locked loop, it is work like this that this two cover receives phase-locked loop: the reception phase-locked loop of supposing work at present is R1, work in frequency X, then when being the signal of X with R1 reception frequency, transceiver is sent another control data that receives phase-locked loop R2, requires it to be operated in the Y frequency, by the time next time slot, when R2 reception frequency was the signal of Y, base station transceiver was sent the control data that receives phase-locked loop R1 again, so alternately.
Fig. 3 A is that the present invention utilizes whole time slot to measure the schematic diagram of frequency disturbed condition.Suppose not frequency hopping of current transceiver, wherein, X is its operate as normal frequency, and Y is one of frequency that needs scanning, and time slot 3 is configured to measure time slot.For first kind of situation, promptly be to during processing time slot 3, the frequency Y that the current reception pll lock of control base station need scan measures the disturbed condition of this frequency, when receiving next time slot 4, then control its normal frequency X of its current pll lock that will work.After the measurement through one period stipulated time, report the remote maintenance platform to add up demonstration measurement result.
Fig. 3 B is that the present invention utilizes 26 idle frames in the multi-frame to measure the schematic diagram of frequency disturbed condition.Wherein, X is its operate as normal frequency, and Y is one of frequency that needs scanning, and 3 time slots are configured to measure time slot.For second kind of situation, promptly be only when the base station need receive idle frame in 26 tdma frames of 3 time slots, control the frequency Y that its current reception pll lock that will work need scan, measure the disturbed condition of this frequency, other times are all controlled its normal frequency X of its current pll lock that will work.After the measurement through one period stipulated time, report the remote maintenance platform to add up demonstration measurement result.
The present invention has the convenient efficient usefulness of determining interference, and network planning personnel can plan frequency by the frequency point scanning result according to the present invention, to avoid interference, also can be to seek the interference source service.
Claims (5)
1, the device that adopts up frequency point scanning commercial measurement to disturb in the global system for mobile communications is characterized in that, comprises a mobile switching centre, two base station controllers, three base stations; Described two base station controllers link with mobile switching centre respectively; In described three base stations, wherein two base stations link with a base station controller respectively, and another base station links with another base station controller; The transceiver of described base station comprises that two covers receive phase-locked loop, alternately received signal.
2, the method that adopts up frequency point scanning commercial measurement to disturb in the global system for mobile communications, it is characterized in that, comprise the up frequency point scanning of two kinds of situations is measured: (A) initially open fast as far as possible the providing under the disturbed condition of test optimization, needs is provided, utilize idle whole TACH/F (full speed channel) time slot that all frequencies of required measurement are carried out scanning survey at network; (B) when the optimizing and revising of even in everyday situations, the requirement of Measuring Time is no longer occupied main status, what need is can not influence under the situation of regular traffic, utilizes the idle frame in 26 multi-frames of TACH/F (full speed channel) to come the scanning survey frequency;
May further comprise the steps:
A, remote maintenance platform issue the base station after configuring the scanning frequency according to concrete needs, and the base station begins to scan frequency after receiving the order of scanning frequency;
In b, the base station transceiver two cover receives phase-locked loop can replace received signal by time slot, and by transceiver Control work frequency;
C, base station control the frequency that reception pll lock that its current time slots do not work need scan at certain time slot, measure the disturbed condition of this frequency during to next time slot;
After d, measurement are finished, report the remote maintenance platform to add up demonstration.
3, method of carrying out up frequency point scanning according to claim 2 is characterized in that, the described scanning frequency point ranges of step a is optional, can be only one, and also can whole frequency.
4, method of carrying out up frequency point scanning according to claim 2 is characterized in that, the idle frame in 26 multi-frames of TACH/F (full speed channel) time slot is last frame in 26 multi-frames.
5, according to claim 2 or 4 described methods of carrying out up frequency point scanning, it is characterized in that described TACH/F (full speed channel) time slot is the tdma frame structure of TCH/F (traffic channel full rate) and SACCH/F (following the slow associated control channel of TCH/F) combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011262990A CN1162016C (en) | 2001-07-20 | 2001-07-20 | Upstream frequency spot scanning device and method of measuring interference in global mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011262990A CN1162016C (en) | 2001-07-20 | 2001-07-20 | Upstream frequency spot scanning device and method of measuring interference in global mobile communication system |
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| Publication Number | Publication Date |
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| CN1399478A CN1399478A (en) | 2003-02-26 |
| CN1162016C true CN1162016C (en) | 2004-08-11 |
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| CNB011262990A Expired - Fee Related CN1162016C (en) | 2001-07-20 | 2001-07-20 | Upstream frequency spot scanning device and method of measuring interference in global mobile communication system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043708B (en) * | 2006-03-24 | 2011-01-26 | 大唐移动通信设备有限公司 | Method and apparatus for measurement in wireless network |
| CN102118760A (en) * | 2009-12-30 | 2011-07-06 | 中兴通讯股份有限公司 | Method, device and system for realizing networking in wireless network |
| CN102790980B (en) * | 2011-05-19 | 2016-06-15 | 中兴通讯股份有限公司 | Uplink spectrum scan method and device based on Wimax system |
| EP3270631B1 (en) * | 2015-04-03 | 2019-06-19 | Huawei Technologies Co., Ltd. | Data transmission method, device and system of time division duplex wireless data transmission system |
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