CN100450260C - Method for statistic of mobile communication network blind area of coverage - Google Patents

Abstract

The invention relates to a method used in the covered blind area statistic of mobile communication network. Wherein, it uses the timed register statistic data collected by base station OMC and the activated user statistic number of exchanger VLR, to evaluate the cover blind area of wireless network; based on the register period, the activated user number in some time collected by VLR, calculating the theory received timed register total number of base station at said time; then comparing it with real received timed register total number, to obtain the cover blind area ratio at said time. The invention can be used in CDMA wireless network, as well as GSM and TD-SCDMA wireless mobile communication network.

Description

A kind of method that is used for statistic of mobile communication network blind area of coverage

Technical field

The invention belongs to the wireless application field of mobile communications network, be specifically related to a kind of method that is used for statistic of mobile communication network blind area of coverage, especially a kind of excited user number that utilizes timing registration statistics that base station side collects and exchanger side to count on comes the method for evaluating wireless network blind area of coverage ratio.

Statistical method of the present invention is not only applicable to the cdma wireless mobile communications network and is suitable for mobile radio networks such as GSM and TD-SCDMA too.

Background technology

In the coverage evaluating of wireless network, the appraisal procedure that adopts is drive drive test (DT) and fixed test (CQT) usually.The test specification of drive test and fixed test of driving is very limited, is difficult to reflect that the real blind area of network covers situation, and take time and effort, expense is big.

Regularly registration is the pattern register that a kind of travelling carriage is periodically registered promptly based on the registration of timer.

In the GSM network, system is by the BCCH broadcast, and the notice travelling carriage was regularly registered by the time cycle of the registration of the periodicity in system message parameter appointment, for example: require travelling carriage periodically to register once in per 30 minutes.

In cdma network, system carries out the cycle of regularly registration (being the periodic location registration) by tell travelling carriage in the system parameters message that issues on paging channel, and travelling carriage carries out the periodicity registration according to this parameter.

Timing among TD-SCDMA registration is also similar, uses regularly registration that system can be nullified to fail the travelling carriage of registration of shutting down.

In patent retrieval, do not find at present to have and utilize regularly registration (or periodic location update) to add up wireless network coverage hole ratio.

Summary of the invention

The object of the present invention is to provide a kind of method that is used for statistic of mobile communication network blind area of coverage.

It is the characteristics of periodic location registration that the present invention mainly can carry out regularly registration according to travelling carriage in the mobile communications network, the excited user number and the base station side OMC that utilize the exchanger side VLR period to count on count on actual timing registration sum, obtain the blind area coating ratio of actual commercial wireless network.

The present invention specifically is achieved in that

A kind of method that is used for statistic of mobile communication network blind area of coverage comprises following processing:

Step 1: according to periodically registering the cycle register duration that parameter is determined travelling carriage in the system message of real network;

Step 2:, draw the regular registration total degree that this service area in theory should produce according to the cycle register of travelling carriage and the exchanger side excited user number that counts on of section at a time;

Step 3:, draw the regular registration total degree that this service area base station side actual reception arrives according to the regular needs of reality according to the statistics of base station side;

Step 4: the timing registration total degree that timing registration total degree that obtains according to the base station side actual count and Theoretical Calculation should produce draws the coverage hole ratio of described wireless network.

The duration of described cycle register is minute.

Describedly can or carry out the statistics of coverage hole by the moon by sky or week according to the regular demand of reality.

Described mobile communications network can be GSM or CDMA or TD-SCDMA.

Draw the regular registration total degree that this service area in theory should produce described in second step and further comprise following processing:

Determine that exchanger side carries out the sampling time of excited user number statistics;

Obtain in the described sampling time according to cycle register, on average each Mobile Originated timing log-on count;

Determine the excited user number of exchanger side statistics in each sampling time, obtain Mobile Originated timing registration sum in this sampling time, and then obtain theoretic regular registration sum according to the regular needs of reality.

The sampling time that described definite switch VLR side is carried out excited user number statistics for minute.

Describedly obtain in the described sampling time average each Mobile Originated timing log-on count for more than or equal to 2 integer according to cycle register.

Actual this service area base station side that draws further comprises following processing according to the regular registration total degree that reality regularly receives described in the third step:

Determine that base station side carries out regularly the sampling time of log-on count statistics;

Determine the timing log-on count in the sampling time, added up, and then obtain the actual regular registration total degree that obtains of base station OMC side according to the regular needs of reality.

The sampling time that described definite base station side is carried out regularly the log-on count statistics for minute.

The present invention is according to cycle register, the excited user number of certain period that counts in conjunction with exchanger side VLR, calculate the timing registration sum that this period base station side should be received in theory, then itself and the actual timing registration sum of receiving of base station side are done contrast, draw the coverage hole ratio of this period.The method of the invention can reflect more truly that the blind area of real network covers situation, and realizes simple, convenient.

Description of drawings

The realization process chart of Fig. 1 the method for the invention.

Embodiment

The concrete steps of the method for the invention are as follows:

Step 1: determine the cycle register duration according to the registration of the periodicity in real network (GSM, CDMA or TD-SCDMA) system message parameter.

Step 2: according to the cycle register and the exchanger side of travelling carriage, specifically be VLR (the Vistor LocationRegister of exchanger side, VLR Visitor Location Register), the excited user number that counts on of section is at a time determined the regular registration total degree that a service area should produce in a day theoretically.

Step 3: according to base station side, the OMC that concrete is in base station side, the statistics of (Operation Maintenance Centre, operation maintenance center) is determined the regular registration total degree that actual reception arrives in this service area base station side one day.

Step 4: the timing registration total degree that obtains according to actual count among the OMC of base station side one day and theoretically determine the timing registration total degree that produce can draw the coverage hole ratio of a wireless network.

Step 5: consider by week according to demand or monthly carry out coverage hole rate statistics.

The present invention is the coverage hole ratio that example illustrates the timing registration evaluating wireless network that how to utilize travelling carriage with the cdma network:

Timing registration in the cdma system is the pattern register that a kind of travelling carriage is periodically registered promptly based on the registration of timer.The base station is set to a nonzero value by the REG_PRD in the system parameters message and decides and carry out time registered at interval, generally is meant cycle register.There is a Paging Channel Slot counter travelling carriage inside, and average every 80ms adds one, when count value reaches Tr, and the Tr=[2 here ^REG_PRD/4], travelling carriage will be registered.When mobile platform started, the system based on time registration of perhaps never activating switches to activation when coming in the system of time registration, counter is initialized to [0, Tr-1] a random number in the scope, this initialization is to register simultaneously and cause system crowded for fear of a large amount of users.The span of REG_PRD is between 29 to 85, and corresponding enrollment time is 12 seconds to 55 hours at interval.

Utilize regularly registration to estimate that the specific implementation step of cdma wireless network blind area of coverage ratio is as follows:

Step 1: the REG_PRD parameter according to actual cdma wireless network is provided with, and calculates the cycle register duration of this parameter correspondence.

Cycle register is T during setting _REG(unit be minute), then T _REGComputing formula as follows:

T _REG＝2 ^REG_PRD/4×0.08/60 (1)

Step 2: obtain the regular registration total degree that a service area should produce in a day theoretically, be designated as X.

Regularly register total degree X and cycle register T in theory in one day of acquisition _REGThe excited user number of the day part that can add up with VLR is relevant.Specifically be calculated as follows:

Determine the time granularity T that exchanger side VLR adds up excited users _VLR, promptly exchanger side VLR is every T _VLRFor a long time excited user number is once added up, unit is minute that then the total degree that exchanger side VLR can add up excited users in a day is

$N_{\max }=\frac{24\×60}{T_{\mathrm{VLR}}}---\left(2\right)$

Each T _VLRThe timing log-on count that average each travelling carriage should be initiated in period is

$\mathrm{\ρ}=\frac{T_{\mathrm{VLR}}}{T_{\mathrm{REG}}}---\left(3\right)$

Wanting ρ value in the derivation of equation (3) during practical application is integer more than or equal to 2, gets 3 or 4 usually, its objective is for the travelling carriage trial of having an opportunity repeatedly to register, and avoids its record of VLR deletion.

Determine each T _VLRCount excited user number in period and count n _i, each T then _VLRThe timing registration that travelling carriage should be initiated in period adds up to (n _i* ρ), the therefore theoretical regular registration total number X that obtains in a day can be calculated with following formula:

$X=\underset{i=1}{\overset{N_{\max }}{\mathrm{\Σ}}}(n_i\×\mathrm{\ρ})---\left(4\right)$

Step 3: according to the statistics of base station side OMC, obtain the regular registration total degree that actual reception arrives in this service area base station side one day, be designated as Y.

Determine that base station side OMC is T to the statistics granularity of timing log-on count _BSOMC, promptly base station side OMC is every T _BSOMCThe timing log-on count is once added up T _BSOMCUnit be minute.Then OMC is designated as total statistics number of regularly registering in one day

$N_{\max }^{\′}=\frac{24\×60}{T_{\mathrm{BSOMC}}}---\left(5\right)$

Determine each T _BSOMCThe timing log-on count that comes out is δ _j, therefore the actual regular registration total degree that obtains of OMC is in one day

$Y=\underset{j=1}{\overset{N_{\max }^{\′}}{\mathrm{\Σ}}}{\mathrm{\δ}}_j---\left(6\right)$

Step 4: utilize timing registration total degree Y that the OMC actual count obtains in a day and the timing that obtains in theory to register total degree X and can draw a proportionality coefficient K.

$K=\frac{Y}{X}---\left(7\right)$

Conclusion 1: K should satisfy K＜1 in the following formula (7), and former because actual wireless network is because the stopping to move and always have travelling carriage to be in to cover relatively poor occasion of travelling carriage, as the underground parking, and elevator etc.If this moment, the timing registration counter of travelling carriage expired, travelling carriage can send regularly registration message, wherein some timing registration message can can't be received by the base station because of the residing wireless environment of travelling carriage is too poor, travelling carriage is no longer retransmitted after the exploration number of times that distributes the agreement regulation, therefore the timing registration sum that base station side OMC statistics obtains in a day should be registered sum less than the timing that Theoretical Calculation draws, and promptly K is less than 1.

Conclusion 2:K value is more little, illustrates that the blind area of network existence is many more.Certainly, the K value also may be subjected to the influence of other factors, reverse link performance as the base station, external disturbance, and the mobility of travelling carriage etc., under the prerequisite of getting rid of external disturbance and base station fault, from the long time statistics, the K value should be the coverage hole situation that can reflect real network substantially.

Conclusion 3: following formula (7) is under the short more situation of the timing cycle register of travelling carriage, and the K value can truly reflect the covering situation of network black spots more.Because regularly cycle register is short more, the timing log-on count that travelling carriage sent in the unit interval is many more, therefore the transregional registration of other factors such as travelling carriage, implicit registration etc. can reflect the authenticity that actual wireless network blind area covers more to regularly registering corresponding the diminishing of influence that total degree calculates.

Conclusion 4: the VLR of exchanger side is short more to the time granularity of excited user number statistics, and the K value also just can truly reflect the covering situation of network black spots more, because the timeout value T of VLR _VLRMore little, VLR can reflect the accuracy of excited user number more.But be noted that common REG_PRD parameter should be set to the timeout value T of corresponding VLR _VLR1/4 or 1/3, to guarantee the travelling carriage trial of having an opportunity repeatedly to register, avoid its record of VLR deletion.

What need here to remark additionally is: top computing formula all is to derive with one day duration, consider user's behavioural habits, understand preceding shutdown of sleep in evening and WA start in morning as most of users, therefore when calculating the blind area coating ratio, might not select one day time to calculate, as considering only to select in one day the busiest several hrs to add up and calculate, the thinking of its calculating is the same with method, only needs make a little formula to revise just.

Step 5: the top statistical conditions of just having obtained one day blind area covering, but for the statistics of wireless network, because the unsteadiness of wireless environment or the variation of user distribution etc. may cause this statistics fluctuation to occur, therefore need average or make its distribution curve etc. the statistics in a week even month.

The as if statistics time is made as T, and unit is the sky, then reflects during this period of time that at T the mean value K of the proportionality coefficient K of coverage hole can calculate with following formula

$\stackrel{\‾}{K}=\frac{\underset{t=1}{\overset{T}{\mathrm{\Σ}}}{K}_t}{T}---\left(8\right)$

According to top concrete steps and computing formula, citing a plain example below illustrates the calculating of cdma wireless network blind area of coverage ratio.

Determine that the REG_PRD parameter is set to 58 in certain cdma network, then can determine T according to (1) formula in the step 1 _REGAbout 30 minutes, promptly travelling carriage was approximately initiated once regularly registration every 30 minutes.

If the time granularity that exchanger side VLR goes up the excited users statistics is 2 hours, promptly excited user number is once added up every 2 hours, then can draw in one day exchanger side VLR to the statistics number N of excited users according to the formula in the step 2 (2) _MaxIt is 12 times.In per two hours, on average to initiate 4 regularly registrations according to the every as can be known user of the formula in the step 2 (3).

Determine in one day that counting on excited user number on the exchanger side VLR in per 2 hours counts n _i, then at wireless environment very under ideal and the normal situation of equipment operation, in this sky in per 2 hours the available in theory timing registration of base station side sum should be 4n _iTherefore the timing registration total degree X that Theoretical Calculation obtains in a day can be expressed as according to the formula in the step 2 (4):

$X=\underset{i=1}{\overset{N_{\max }}{\mathrm{\&Tgr;}}}(n_i\×\mathrm{\ρ})=\underset{i=1}{\overset{12}{\mathrm{\Σ}}}{4n}_i---\left(9\right)$

Determine base station side OMC to actual reception to the statistics granularity of timing log-on count be 60 minutes, promptly base station side will be carried out once the statistics of registration regularly in per 60 minutes, then can obtain from OMC in one day as can be known according to the formula in the step 3 (5) $N_{\max }^{\′}=\frac{24\×60}{T_{\mathrm{BSOMC}}}=24$ The statistics of inferior timing registration.

Determine each T _BSOMCThe timing log-on count that comes out is δ _j, therefore the actual regular registration total degree that obtains of OMC is in one day

$Y=\underset{j=1}{\overset{N_{\max }^{\′}}{\mathrm{\Σ}}}{\mathrm{\δ}}_j=\underset{j=1}{\overset{24}{\mathrm{\Σ}}}{\mathrm{\δ}}_j---\left(10\right)$

Timing registration total degree Y that base station side OMC actual count in a day is obtained and the formula (7) in the theoretical timing registration total degree substitution step 4 that obtains can get

$K=\frac{Y}{X}=\frac{\underset{j=1}{\overset{24}{\mathrm{\Σ}}}{\mathrm{\δ}}_j}{\underset{i=1}{\overset{12}{\mathrm{\Σ}}}{4n}_i}$

Claims (9)

1, a kind of method that is used for statistic of mobile communication network blind area of coverage is characterized in that, comprises following processing:

Step 1: according to periodically registering the cycle register duration that parameter is determined travelling carriage in the system message of real network;

Step 2:, draw the regular registration total degree that this service area in theory should produce according to the cycle register of travelling carriage and the exchanger side excited user number that counts on of section at a time;

Step 3: the timing log-on count according to base station side counts on draws the regular registration total degree that this service area base station side actual reception arrives according to the regular needs of reality again;

Step 4: the timing registration total degree that timing registration total degree that obtains according to the base station side actual count and Theoretical Calculation should produce draws the coverage hole ratio of wireless network.

2, be used for the method for statistic of mobile communication network blind area of coverage according to claim 1, it is characterized in that:

The unit of described cycle register is minute.

3, be used for the method for statistic of mobile communication network blind area of coverage according to claim 1, it is characterized in that:

Describedly can or carry out the statistics of coverage hole by the moon by sky or week according to the regular demand of reality.

4, be used for the method for statistic of mobile communication network blind area of coverage according to claim 1, it is characterized in that:

Described mobile communications network can be GSM or CDMA or TD-SCDMA.

5,, it is characterized in that drawing described in the step 2 the regular registration total degree that this service area in theory should produce and further comprise following processing as being used for the method for statistic of mobile communication network blind area of coverage as described in claim 1 or 2 or 3 or 4:

Determine that exchanger side carries out the sampling time of excited user number statistics;

Obtain in the described sampling time according to cycle register, on average each Mobile Originated timing log-on count;

Determine the excited user number of exchanger side statistics in each sampling time, obtain Mobile Originated timing registration sum in this sampling time, and then obtain theoretic regular registration sum according to the regular needs of reality.

6, as being used for the method for statistic of mobile communication network blind area of coverage as described in the claim 5, it is characterized in that:

The sampling time that described definite exchanger side carries out excited user number statistics for minute.

7, as being used for the method for statistic of mobile communication network blind area of coverage as described in the claim 5, it is characterized in that:

Describedly obtain in the described sampling time average each Mobile Originated timing log-on count for more than or equal to 2 integer according to cycle register.

8, as being used for the method for statistic of mobile communication network blind area of coverage as described in claim 1 or 2 or 3 or 4, it is characterized in that step 3 specifically comprises following processing:

Determine that base station side carries out regularly the sampling time of log-on count statistics;

Determine the timing log-on count in the sampling time, added up, and then obtain the regular registration total degree of the OMC of base station operation maintenance centre side actual reception according to the regular needs of reality.

9, as being used for the method for statistic of mobile communication network blind area of coverage as described in the claim 8, it is characterized in that:

The sampling time that described definite base station side is carried out regularly the log-on count statistics for minute.