CN1146278C - Method for estimating interference level to idle channel in cellular mobile communication system - Google Patents
Method for estimating interference level to idle channel in cellular mobile communication system Download PDFInfo
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- CN1146278C CN1146278C CNB991168208A CN99116820A CN1146278C CN 1146278 C CN1146278 C CN 1146278C CN B991168208 A CNB991168208 A CN B991168208A CN 99116820 A CN99116820 A CN 99116820A CN 1146278 C CN1146278 C CN 1146278C
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Abstract
The present invention discloses a method for estimating interference levels to idle channels in cellular mobile communication systems. The method uses electrical level values received on idle channels as interfered estimated values of the channels so as to determine interfered grades. The method needs only to make use of the interference level in an uplink direction directly in practical use so as to estimate the interference degree of the idle channels. The interference estimation method provided by the present invention is valuable for relevant wireless communication systems of channel allocation and channel exchange and is suitable for all digital radio communication systems.
Description
The present invention relates to a kind of communication technology, relate in particular in a kind of cell mobile communication systems method of estimation the annoyance level of idle channel.
In cell mobile communication systems, the channel of actual allocated may be selected by the optimization of transmission performance, and this requires base station controller to know the switching performance information of relevant every idle channel in advance.But in fact, the channel switching performance is to be difficult to estimate before effective utilization of channel.
In the ordinary course of things, want non-channel switching performance that effectively utilizes under the state of fixed time test, need regularly send one section fixing test pattern at the transmitting terminal Base Band Unit, after receiving terminal is attempted by corresponding processing mode to recover, make comparisons with original drawings again, draw the channel switching performance.This mode exists process of measurement complexity, serious waste system calculation resources and easily other has been in the defective that channel under effective connection status causes interference.
The objective of the invention is wastes in order to solve in the existing cell mobile communication systems when idle channel switching performance test, and the defective big to other channel disturbance, and a kind of method of measurement that provides is easy, reliable and the annoyance level to the idle channel switching performance that can save system's calculation resources carries out estimation approach.
Realize that technical scheme of the present invention is: a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, estimate to may further comprise the steps the annoyance level of idle channel with the interference level value of uplink direction:
1. divide the grade of channel interference level;
2. measure the interference level value that on idle channel, receives;
3. the 2. measured residing interference level grade of interference level value of determining step;
4. determine the channel disturbance degree.
Above-mentioned a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, wherein, the division of described interference level grade can be divided continuously by the level that receives in this idle channel size, and the annoyance level of grade classification idle channel according to this.
Above-mentioned a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, wherein, described step takes regularly to ask average method to the measurement of interference level in 2., and the interference level statistics summation that is about to repeatedly gather in the regular hour is averaged again.
Because the present invention has adopted above technical scheme, therefore, when needing only the annoyance level that the interference level that directly utilizes uplink direction can be estimated this idle channel in actual use; That is to say that when a channel was not assigned to any connection, the incoming level on this channel can be used as on this channel and to disturb and the estimation of noise level.
Concrete feature, performance and advantage of the present invention are further specified by following embodiment.
In fact level value on arbitrary wireless channel is exactly the stack of useful signal, aerial noise, circuit noise and thermal noise etc.Obviously, for the link of arbitrary unallocated connection, do not have useful signal, the power level that records on this link should be the stack of various interference and noise power at this moment.So if our interference level value of this link of tracking measurement always, we just can learn the disturbance regime on this link basically in real time.
The present invention a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, estimate to may further comprise the steps the annoyance level of idle channel: 1. at first interference level is divided several grades with the interference level value of uplink direction; 2. measure the interference level value that on idle channel, receives; 3. the 2. measured residing interference level grade of interference level value of determining step; 4. 3. measure the interference level grade according to step, determine the degree of interference level in the idle channel, send high-rise processing unit to, be used for providing when high-rise processing unit carries out channel allocation the distribution foundation of channel quality.
The interference level divided rank is the processing time for the system of saving, and can further simplify processing procedure, be that we are when doing these interference level value measurements, need not learn its exact value constantly, only need to divide several grades for disturbing level range in advance, measure our desired interference level value and drop within which grade, transmit the interference level grade and get final product.
The grade classification of the described interference level of the embodiment of the invention be by the interference level in this idle channel by very little to very seriously dividing continuously, and the annoyance level of grade classification idle channel according to this.Can be divided into several grades, specifically decide on actual conditions, such as being divided into: channel disturbance is very little, and channel disturbance is less, channel disturbance is big, channel disturbance is serious, channel disturbance is serious, channel disturbance is very serious etc. 6 grades divide.
For example: in gsm system, we can be divided into interference level 6 grades, and these 6 grades are:
Grade 1:-110dbm～-105dbm: channel disturbance is very little, should be by priority allocation when channel allocation.
Grade 2:-105dbm～-98dbm: channel disturbance is less;
Grade 3:-98dbm～-90dbm: channel disturbance is bigger;
Class 4 :-90dbm～-87dbm: channel disturbance is serious;
Class 5 :-87dbm～-85dbm: channel disturbance is more serious;
Class 6: surpass-85dbm: channel disturbance is very serious.
Simultaneously, because various Effect of Environmental, separately certain once or can there be bigger difference in interference level situation of recording of some time with actual conditions will to make us, so, the present invention has proposed regularly to ask average thought simultaneously, be that this incoming level is measured in base station (BTS) on all unallocated channels, after having obtained a plurality of measured values, once add up and ask average, result with statistical average sends base station controller (BSC) to then, base station controller (BSC) is according to the information on all idle channels, when needs carry out channel allocation, distribute a idle channel, or determine the switching of a minizone with minimum uplink interference level.Regularly ask average thought, also set up for the processing burden that alleviates high-rise processing unit, such as us after obtaining 10 interference level grades, ask the mean value of these 10 measurement results, send this mean value to high-rise processing unit as the disturbance regime of measured channel, base station controller for example can alleviate the processing burden of base station controller.
In sum, this interference estimation means provided by the present invention is switched in the relevant wireless communication system to be very valuable, therefore, to be applicable to all digit wireless communication systems relating to channel allocation, channel.
Claims (3)
1, a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, it is characterized in that, estimate to may further comprise the steps the annoyance level of idle channel with the interference level value of uplink direction:
1. divide the grade of channel interference level;
2. measure the interference level value that on idle channel, receives;
3. the 2. measured residing interference level grade of interference level value of determining step;
4. determine the channel disturbance degree.
2. according to claim 1 a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, it is characterized in that, the division of described interference level grade can be divided continuously by the level that receives in this idle channel size, and the annoyance level of grade classification idle channel according to this.
3. according to claim 1 a kind of in cell mobile communication systems to the method for estimation of idle channel annoyance level, it is characterized in that, described step takes regularly to ask average method to the measurement of interference level in 2., and the interference level statistics summation that is about to repeatedly gather in the regular hour is averaged again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991168208A CN1146278C (en) | 1999-08-30 | 1999-08-30 | Method for estimating interference level to idle channel in cellular mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991168208A CN1146278C (en) | 1999-08-30 | 1999-08-30 | Method for estimating interference level to idle channel in cellular mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1286583A CN1286583A (en) | 2001-03-07 |
| CN1146278C true CN1146278C (en) | 2004-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB991168208A Expired - Lifetime CN1146278C (en) | 1999-08-30 | 1999-08-30 | Method for estimating interference level to idle channel in cellular mobile communication system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7443821B2 (en) * | 2004-01-08 | 2008-10-28 | Interdigital Technology Corporation | Method for clear channel assessment optimization in a wireless local area network |
| CN103229575B (en) * | 2012-12-24 | 2016-10-12 | 华为技术有限公司 | Method for channel allocation, device, base station and system |
| CN109412719B (en) * | 2018-09-05 | 2021-03-19 | 深圳市汇顶科技股份有限公司 | Fingerprint chip testing method and testing equipment |
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1999
- 1999-08-30 CN CNB991168208A patent/CN1146278C/en not_active Expired - Lifetime
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| CN1286583A (en) | 2001-03-07 |
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