CN101137186B - Method for quantitatively analyzing multi-carrier overlapping diversity size - Google Patents
Method for quantitatively analyzing multi-carrier overlapping diversity size Download PDFInfo
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- CN101137186B CN101137186B CN200710002405A CN200710002405A CN101137186B CN 101137186 B CN101137186 B CN 101137186B CN 200710002405 A CN200710002405 A CN 200710002405A CN 200710002405 A CN200710002405 A CN 200710002405A CN 101137186 B CN101137186 B CN 101137186B
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Abstract
The invention provides a quantitative analysis method of multi-carrier frequency coverage difference in code division multiple access systems, comprises following steps: the first step, a multi-carrier frequency coverage difference test program is started; the second step, the first message sent from a cell basic carrier frequency is received by the system, and radio environment information is obtained from the first message, relative messages are obtained from a base station demodulation unit at the same time; the third step, when a call needed allotment between frequencies successfully enters into a service channel, the base station sends pilot frequency measuring request commands to indicate the terminal report a pilot frequency intensity measuring message; the fourth step, the base station receives the radio environment condition information according to the pilot frequency intensity measuring message reported by the terminal; the fifth step, the system compares the radio environment information received from the second step, the relative information with the radio environment condition information received from the fourth step to quantificationally analyze difference between a non-basic carrier frequency and a basic carrier frequency coverage.
Description
Technical field
The present invention relates to the communications field, and more particularly, relate to the method that a kind of quantitative analysis overloading covers the difference size frequently, it is applicable to wireless communication system, and especially many coverings of code division multiple access system detect.
Background technology
In wireless communication system such as code division multiple access system, in order to adapt to the needs of wireless network telephone traffic development, enough high in the honeycomb dense degree, can't improve under the situation of power system capacity by increasing the base station, use overloading dilatation frequently to increase power system capacity usually.
In the planning and optimization of overloading frequency network, sometimes only give a carrier frequency configuration paging channel, this carrier frequency is commonly referred to basic carrier frequency, and other carrier frequency does not dispose paging channel, purpose is to make original configuration leave Traffic Channel for for the power of paging channel, reaches the purpose that makes full use of system power.For distinguishing basic carrier frequency, other carrier frequency hereinafter is called non-basic carrier frequency.In this configuration, the traffic channel assignments of non-basic carrier frequency is by basic carrier frequency assignment, and this assignment is called strides assignment frequently, that is, and and hard assignment.Owing to stride assignment frequently or change the needs that switch frequently, the covering that requires non-basic carrier frequency otherwise may have a negative impact to network performance than basic carrier frequency slightly greatly or consistent as far as possible.
These adverse effects mainly show: cover little if non-basic carrier frequency covers than basic carrier frequency, some is called out when basic carrier frequency is assigned to non-basic carrier frequency, in the zone that basic carrier frequency covers greater than non-basic carrier frequency, the terminal meeting is call failure owing to the signal that can not find non-basic carrier frequency; If the covering of non-basic carrier frequency is excessive, except meeting to other base station produce disturb, also can cause non-basic carrier frequency forward emitting power waste, soft-switch proportion excessive, cause the utilance of power resource, Channel Elements resource and sign indicating number resource not high.In addition, adjacent boundary region at multiple carrier frequency base station and single carrier frequency base station, unavoidably can exist by non-basic carrier frequency base station and change the phenomenon of switching frequently to single carrier frequency base station, if system uses based on auxiliary direct-cut operation (Hand-down) mode of database, system is that the qualitative covering of knowing the adjacent boundary non-basic carrier frequency in sub-district covers big than basic carrier frequency, and can't the concrete difference size of quantitative analysis, cause like this will comparing blindly when changing of each sub-district, adjacent boundary frequently switched comparison threshold being provided with.If it is too high that this parameter is provided with, the user on the then non-basic carrier frequency can switch on the basic carrier frequency of sub-district, adjacent boundary too early, causes the load of the adjacent boundary basic carrier frequency in sub-district excessive; On the contrary, too small if this parameter is provided with, cause probably again changing that frequently success rate for switching is low, influence systematic function.Therefore the overloading of code division multiple access system is covered difference frequently and carries out quantitative analysis, overloading planning frequently with optimize in have very important significance.
Wherein, above-mentioned direct-cut operation (Hand-down) is that the control travelling carriage switches to another carrier frequency from a carrier frequency of sub-district without Other Frequency Search, the principle that its utilizes is that the covering of two carrier frequency of same cells is basic identical, signal strength signal intensity is suitable, therefore do not need to carry out Other Frequency Search, when satisfying the handover trigger thresholding, direct command travelling carriage direct-cut operation is to the pre-configured Hand-down target carrier frequency of database.
Frequently cover the problem of difference size for how quantitative analysis overloading, also convenient at present feasible method.The method that is generally used for each carrier frequency covering difference size of quantitative analysis is by the fixed test and the drive test of driving, but test result is subjected to the influence of extraneous factor very big, such as, be subjected to the influence of different period telephone traffics, and can't guarantee the consistency of test condition and environment when common fixed test or drive test fully, therefore, the availability of the quantized result that obtains like this is very restricted, and be difficult to operation, take time and effort.
In view of the above problems, need a kind of simple, novel, economic method to come the quantitative analysis overloading to cover the difference size frequently.
Summary of the invention
The overloading that is mentioned among the present invention is network frequently, refers to the overloading frequency network that only disposes paging channel at basic carrier frequency.
According to embodiments of the invention, provide a kind of quantitative analysis overloading that is used for code division multiple access system to cover the method for difference size frequently.
This method may further comprise the steps: first step, open multi-carrier frequency coverage difference test program; Second step, system are obtained first message that sends on the basic carrier frequency in sub-district, and obtain radio environment information from first message, obtain relevant information from the base station demodulating unit simultaneously; Third step is striden the calling of assignment frequently for needs, and after access success entered Traffic Channel, the base station issued PMRO (Pilot Measurement Request Order, pilot measurement request command) indicating terminal to report Pilot Strength Measurement Message; The 4th step, the base station obtains the wireless environment condition information by the Pilot Strength Measurement Message of terminal to report; And the 5th step, the radio environment information that system will obtain in second step, relevant information and the wireless environment condition information that obtains in the 4th step compare, to analyze the difference size that non-basic carrier frequency and basic carrier frequency cover quantitatively.
Wherein, the first above-mentioned message can be initial message or page-response message.
In addition, the radio environment information of obtaining in above-mentioned second step comprises: each calls out the pilot frequency intensity on basic carrier frequency, and the relevant information of obtaining then comprises: EPN (EarliestPN Offset, pseudo random noise offset the earliest); The wireless environment condition information that obtains in the 4th step comprises: pilot frequency intensity, the loop round-trip delay of current calling on non-basic carrier frequency.
In addition, in third step, the base station connects in the service of receiving self terminal and issues PMRO after finishing message, and perhaps shaking hands in Traffic Channel issues PMRO after finishing.
And in the 5th step, can be further terminal be worked the Active Set pilot tone that reports when exhaling on basic carrier frequency compares with main service pilot tone in the Pilot Strength Measurement Message that reports on non-basic carrier frequency: if the Active Set pilot tone is not same pilot tone with main service pilot tone, then delete call data; If the Active Set pilot tone is same pilot tone with main service pilot tone, the loop round-trip delay of the main main service pilot tone of serving the EPN of pilot tone and in Pilot Strength Measurement Message, reporting of then carrying in the call message that relatively receive the base station, if both differ bigger, then delete call data.
In addition, in third step, the indicating terminal to report Pilot Strength Measurement Message also can be come by issuing PPMRO in the base station.
By above technical scheme, the present invention has realized following beneficial effect: the easy operating by providing, the quantitative analysis overloading of being convenient to realize cover the method for difference size frequently, can round-the-clock monitoring each carrier frequency cover whether reasonable, also the coverage optimization for each carrier frequency provides reference and guidance, also provides help for the compliance test result behind the coverage optimization.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart that covers the method for difference size according to the quantitative analysis overloading of the embodiment of the invention frequently;
Fig. 2 covers in the method for difference size frequently in the quantitative analysis overloading according to the embodiment of the invention, and the base station issues the signaling process figure of PMRO process; And
Fig. 3 is the flow chart of the specific implementation example of the method that covers the difference size frequently of the quantitative analysis overloading according to the embodiment of the invention.
Embodiment
Describe embodiments of the invention hereinafter with reference to accompanying drawing, its purpose is to provide to thorough and complete understanding of the present invention, rather than the present invention is carried out any restriction.
The embodiment of the invention provides a kind of quantitative analysis overloading that is used for code division multiple access system to cover the method for difference size frequently.
As shown in Figure 1, this method may further comprise the steps:
Step S102 opens multi-carrier frequency coverage difference test program;
Step S104, system obtains Originationmessage (initial message) or the Page Response message (page-response message) that sends on the basic carrier frequency in sub-district, and therefrom obtain radio environment information, obtain the information that comprises EPN (Earliest PN Offset, pseudo random noise offset the earliest) etc. from base station demodulating unit (channel board) simultaneously; Wherein, radio environment information comprises the pilot frequency intensity of each calling on basic carrier frequency;
Step S106, stride the calling of assignment frequently for needs, after access success enters Traffic Channel, the base station issues PMRO (Pilot Measurement Request Order, the pilot measurement request command) indicating terminal to report PSMM (Pilot Strength MeasurementMessage, Pilot Strength Measurement Message); Wherein, when carrying out this step, base station controller can at first judge whether to stride assignment frequently; In addition, the base station also can use PPMRO (Periodic Pilot Measurement Request Order, cycle pilot measurement request command) to come indicating terminal to report PSMM;
Step S108, the base station obtains wireless environment condition information (comprising pilot frequency intensity, the RTD (Round TripDelay, loop round-trip delay) of current calling on non-basic carrier frequency) by the PSMM of terminal to report; And
Step S110, the radio environment information that system will obtain in step S106, relevant information and the wireless environment condition information that obtains in step S108 compare, to analyze the difference size that non-basic carrier frequency and basic carrier frequency cover quantitatively; Particularly, current calling is worked information such as the pilot frequency intensity that reports when exhaling and analyze comparison at the pilot frequency intensity on the non-basic carrier frequency, RTD information such as (Round Trip Delay) and its on basic carrier frequency from the information such as EPN that channel board obtains.
Wherein, in step S106, the base station can issue PMRO (also can use PPMRO) after receiving the ServiceConnect Completion of self terminal (the professional connection finishes) message, and concrete signaling process as shown in Figure 2.Owing to receive ServiceConnect Completion to the base station from terminal initiation Origination Message or Page Response message, time is generally several seconds (being generally less than 2 seconds), the base station is after receiving the Service Connect Completion that terminal is sent, can send PMRO to terminal immediately, indicating terminal to report PSMM, this section period is very short, can ignore.The bigger call data of RTD difference that EPN that reports for basic carrier frequency and non-basic carrier frequency report, when carrying out data analysis with statistics, can consider to reject, therefore the method that provides of the application of the invention embodiment, can think that fully the basic carrier frequency that system gets access to and the coverage condition of non-basic carrier frequency are in the same time and place substantially, have reliability, can truly reflect the covering difference condition of each carrier frequency of system.
Alternatively, in step S106, base station (BS) also can Traffic Channel shake hands finish after (BS successfully receives MS Ack Order) issue PMRO (also can use PPMRO), indicating terminal to report PSMM immediately.So the basic carrier frequency radio environment information of terminal to report with report the time difference of the radio environment information of non-basic carrier frequency can be littler.
Come further the method that provides in the present embodiment to be described below with reference to example, wherein, described a plurality of details relevant with this method.
In this example, be used for to the code division multiple access system overloading cover frequently the difference size carry out quantitative analysis method flow process as shown in Figure 3.
As shown in Figure 3, this method comprises following processing:
Step S301: for the multi-carrier frequency cell that has only basic carrier frequency configuration paging channel, quantize each carrier frequency if desired and cover specifically size of difference, then open the multi-carrier frequency coverage difference test monitoring facilities;
Step S302: after monitoring facilities starts, Origination Message that receive system acquisition sub-district to be monitored or Page Response Message;
Step S303: system obtains each and calls out radio environment information such as pilot frequency intensity on basic carrier frequency from the Origination Message that collects or PageResponse Message, obtain the information such as EPN that each is called out from channel board;
Step S304: base station controller judges whether and need stride assignment frequently to each calling, strides assignment frequently if desired, then changes step S306 over to; If do not need to stride assignment frequently, then change step S305 over to;
Step S305: to not needing to stride the calling of assignment frequently, system is undertaken by normal call flow, and the base station need not to issue PMRO after receiving Service Connect Completion message;
Step S306: assigned calling success or not is frequently respectively striden in the further judgement of base station controller, if access success then changes step 107 over to; If call failure does not then process; Wherein, base station controller judges whether that the standard of successful call is: the base station is after having issued ECAM (Extended Channel Assignment Message), can receive ServiceConnect Completion message,, show that then this calls out is successful call if can receive;
Step S307: for striding the user of assigned calling success frequently, base station controller issues PMRO (Pilot Measurement Request Order), indicating terminal to report PSMM (Pilot Strength Measurement Message); Wherein, base station controller issues PMRO (Pilot Measurement Request Order) immediately after successfully receiving the Service Connect Completion message of self terminal;
Step S308: base station controller obtains the wireless environment condition information of each user on non-basic carrier frequency, comprising pilot frequency intensity, RTD etc. according to the PSMM (Pilot StrengthMeasurement Message) of terminal to report;
Step S309: system will respectively stride the wireless environment condition information (pilot frequency intensity, EPN) that assigned calling frequently reports and compare on wireless environment condition information (pilot frequency intensity, RTD) that non-basic carrier frequency reports and basic carrier frequency; Draw and call out the covering difference size of i on basic carrier frequency and non-basic carrier frequency, be designated as Δ i;
Step S310: can export the comparative result Δ that the day part overloading covers the difference size frequently on demand, wherein,
In the superincumbent step 309, in order to get rid of the influence of high-speed mobile user or high building complex wireless environments to quantitative analysis of the present invention, can serve pilot tone and compare by terminal is worked in the Active Set pilot tone (main service pilot tone) that reports when exhaling and the PSMM message that on non-basic carrier frequency, reports (corresponding) master on basic carrier frequency with PMRO, if the two is not same pilot tone, can reject these call data; If same pilot tone, also need in the call message that reference base station receives with the RTD of EPN and the main service pilot tone that in PSMM message (corresponding), reports of main service pilot tone with PMRO, differ bigger as if both, then can consider to reject this call data.
By above detailed description to technical solution of the present invention as can be seen, the embodiment of the invention provides method easy operating that the quantitative analysis overloading covers the difference size frequently, is convenient to realize, can each carrier frequency of round-the-clock monitoring cover whether reasonable.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a quantitative analysis overloading covers the method for difference size frequently, is used for code division multiple access system, it is characterized in that, may further comprise the steps:
First step is opened multi-carrier frequency coverage difference test program;
Second step, system are obtained first message that sends on the basic carrier frequency in sub-district, and obtain radio environment information from described first message, obtain relevant information from the base station demodulating unit simultaneously;
Third step is striden the calling of assignment frequently for needs, and after access success entered Traffic Channel, the base station issued pilot measurement request command indicating terminal to report Pilot Strength Measurement Message;
The 4th step, described base station obtains the wireless environment condition information by the described Pilot Strength Measurement Message of terminal to report; And
The 5th step, the described radio environment information that described system will obtain in described second step, relevant information and the described wireless environment condition information that obtains in described the 4th step compare, to analyze the difference size that non-basic carrier frequency and basic carrier frequency cover quantitatively.
2. method according to claim 1 is characterized in that, described first message is any in the following message: initial message, page-response message.
3. method according to claim 1 is characterized in that, the described radio environment information of obtaining in described second step comprises: each calls out the pilot frequency intensity on basic carrier frequency.
4. method according to claim 1 is characterized in that, the described relevant information of obtaining in described second step comprises: pseudo random noise offset the earliest.
5. method according to claim 1 is characterized in that, in described third step, described base station issues described pilot measurement request command after message is finished in the service connection of receiving self terminal.
6. method according to claim 1 is characterized in that, in described third step, shake hands in Traffic Channel and issue described pilot measurement request command after finishing in described base station.
7. method according to claim 1 is characterized in that, the described wireless environment condition information that obtains in described the 4th step comprises: pilot frequency intensity, the loop round-trip delay of current calling on non-basic carrier frequency.
8. method according to claim 1, it is characterized in that, in described the 5th step, further the main service pilot tone that described terminal is risen on basic carrier frequency in Active Set pilot tone that reports when exhaling and the Pilot Strength Measurement Message that reports on non-basic carrier frequency compares.
9. method according to claim 8 if described Active Set pilot tone and described main service pilot tone are not same pilot tones, is then deleted call data; If described Active Set pilot tone and described main service pilot tone are same pilot tones, the pseudo random noise offset the earliest of the main service pilot tone of carrying in the call message that receive then more described base station and the main loop round-trip delay of serving pilot tone that in described Pilot Strength Measurement Message, reports, if both differ bigger, then delete call data.
10. according to each described method in the claim 1 to 9, it is characterized in that, the base station in the described third step is issued pilot measurement request command indicating terminal to report Pilot Strength Measurement Message replace with the base station and issue cycle pilot measurement order and come the indicating terminal to report Pilot Strength Measurement Message.
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| CN200710002405A CN101137186B (en) | 2007-01-17 | 2007-01-17 | Method for quantitatively analyzing multi-carrier overlapping diversity size |
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| CN200710002405A CN101137186B (en) | 2007-01-17 | 2007-01-17 | Method for quantitatively analyzing multi-carrier overlapping diversity size |
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| CN101894219B (en) * | 2010-07-23 | 2012-07-25 | 北京航空航天大学 | Method for quantitative analysis of comprehensive testing coverage of system structure, functions and performance |
| CN103052096A (en) * | 2011-10-12 | 2013-04-17 | 中兴通讯股份有限公司 | Multi-carrier coverage balance monitoring method, device and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6430168B1 (en) * | 1999-10-18 | 2002-08-06 | Nortel Networks Limited | CDMA base station lantern application |
| CN1731882A (en) * | 2004-08-04 | 2006-02-08 | 中兴通讯股份有限公司 | TD-SCDMA system cell multi-carrier frequency covering method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6430168B1 (en) * | 1999-10-18 | 2002-08-06 | Nortel Networks Limited | CDMA base station lantern application |
| CN1731882A (en) * | 2004-08-04 | 2006-02-08 | 中兴通讯股份有限公司 | TD-SCDMA system cell multi-carrier frequency covering method |
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