CN102547777A - Standalone dedicated control channel (SDCCH) configuration method - Google Patents
Standalone dedicated control channel (SDCCH) configuration method Download PDFInfo
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Abstract
The invention discloses a standalone dedicated control channel (SDCCH) configuration method, and belongs to the field of channel configuration in mobile communication. The method comprises the following steps of: calculating traffic of SDCCHs and traffic of traffic channels (TCHs) according to acquired related traffic statistical data of a link access control/base station control (LAC/BSC) level in a global system for mobile communication (GSM) network; calculating the available quantity of the TCHs in a cell according to the carrier frequency configuration of the cell; and determining an SDCCH configuration scheme of the cell according to the available quantity of the TCHs in the cell and a ratio of the traffic of the TCHs to the traffic of the SDCCHs. By the method, only the related traffic statistical data of the LAC/BSC level is required to be acquired, the channel configuration of the cell in a region can be reasonably evaluated without the influence of regions and other factors, and a channel ratio can be dynamically regulated, so the traffic can be balanced, and the aim of optimum resource configuration can be fulfilled.
Description
Technical field
The present invention relates to the channel configuration field in the mobile communication, be specifically related to a kind of real-time and effective SDCCH channel arrangement method.
Background technology
On the air interface of mobile communication GSM network, need to transmit great deal of information.According to the professional variety classes of channel bearing, defined the different logical channel.Logic channel is mapped on the physical channel.The gsm system logic channel is divided into two big types: dedicated channel and common signal channel, dedicated channel mainly are meant the Traffic Channel that is used to transmit user speech or data, also comprise the DCCH that some are used to control.And in all logic channels; SDCCH channel (Separate Dedicated Control Channel) has been played the part of a considerable role, and it mainly acts on is the transmission of before assigning the TCH channel, bearing system information, inserts like the user; User's registration, signalings such as authentication ciphering and call proceeding.Therefore, in a sub-district, the certain SDCCH channel of reasonable disposition how is confirmed the optimal proportion of TCH and SDCCH channel can effectively utilize channel resource, ensures carrying out smoothly of conversation, and realizes equalizing traffic volume.
In present channel configuration, also there is not very similar techniques, mainly be to come configurating channel through actual traffic measurement and experience.Its main implementation method is through backstage traffic measurement index: the TCH telephone traffic, and the SDCCH times of congestion, the SDCCH telephone traffic, SDCCH congestion ratio etc. judges whether channel need do channel adjustment.Because through statistical indicator is to find that adjusting under the congested situation has appearred in the SDCCH channel; And whether the channel architecture of adjustment rationally can't be assessed, and perhaps there is redundancy in SDCCH channel configuration itself, but owing to do not occur congested; Do not do the channel architecture adjustment; Thus, cause the unreasonable of channel configuration easily, the wasting of resources occurs.
Summary of the invention
To the defective that exists in the prior art, the object of the present invention is to provide a kind of SDCCH channel arrangement method, assess the reasonable disposition of channel effectively, and, reach the optimum purpose of resource distribution according to the optimum channel ratio of traffic model configuration.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of SDCCH channel arrangement method may further comprise the steps:
(1) obtains the traffic measurement result who treats configuring area, calculate this regional SDCCH telephone traffic and TCH telephone traffic, and obtain the TCH telephone traffic and the SDCCH telephone traffic ratio R in zone;
(2) according to the carrier frequency configuration of the sub-district that is positioned at said zone, the traffic channel of calculation plot can be used number C;
(3) configuration that can confirm the SDCCH channel of sub-district with the TCH telephone traffic and the SDCCH telephone traffic ratio R in number C and zone according to the traffic channel of sub-district.
Further, aforesaid a kind of SDCCH channel arrangement method in the step (1), when the SDCCH channel redundancy not being set spending, takies duration calculation SDCCH telephone traffic and TCH telephone traffic according to the event type and the incident of SDCCH channel occupancy; Said event type comprise position renewal, short message, calling, IMSI adhere to separate, facsimile service and supplementary service.
Further, aforesaid a kind of SDCCH channel arrangement method, the formula that takies duration calculation SDCCH telephone traffic according to the event type and the incident of channel occupancy is:
SDCCH_TRAFFIC＝((SDCCH_CALL)×T
1+(SDCCH_SMS)×T
2+(SUCC_SEIZ_SUPPLEM_SERV)×T
3+(SDCCH_LOC_UPD)×T
4+(IMSI_DETACH_SDCCH)×T
5))/3600；
Wherein, SDCCH_TRAFFIC representes the SDCCH telephone traffic, and SDCCH_CALL representes that calling takies number of times, and SDCCH_SMS representes that short message takies number of times; SUCC_SEIZ_SUPPLEM_SERV representes that supplementary service takies number of times; SDCCH_LOC_UPD representes that the position is upgraded and takies number of times, and IMSI_DETACH_SDCCH representes that IMSI adheres to separating and takies number of times, T
1, T
2, T
3, T
4, T
5The duration that takies of representing all types of incidents respectively.
Further, aforesaid a kind of SDCCH channel arrangement method, the formula that takies duration calculation TCH telephone traffic according to the event type and the incident of channel occupancy is:
TCH_TRAFFIC＝ave_busy_tch/res_av_denom14；
Wherein, TCH_TRAFFIC representes the TCH telephone traffic, and ave_busy_tch representes TCH channel occupancy duration, and res_av_denom14 representes the scan period of TCH telephone traffic.
Further, aforesaid a kind of SDCCH channel arrangement method, in the step (3), confirm that the concrete mode of configuration of SDCCH channel of sub-district is following:
1. can use number C according to the traffic channel of sub-district, confirm the TCH channel number X and the SDCCH channel number Y of sub-district, wherein, X+Y=C;
2. inquire about ERLANG B, obtain TCH telephone traffic T and Y the SDCCH telephone traffic D that the SDCCH channel is supported that X TCH channel supported;
3. whether check T/D less than R,, then return TCH channel number X and SDCCH channel number Y that 1. step confirms the sub-district again if not if then the channel configuration of step in 2. is reasonable.
Further, aforesaid a kind of SDCCH channel arrangement method, step 2. in, check ERLANG B according to the TCH percent of call lost and the SDCCH percent of call lost, obtain TCH telephone traffic T and Y the SDCCH telephone traffic D that the SDCCH channel is supported that X TCH channel supported.
Further, aforesaid a kind of SDCCH channel arrangement method, in the step (2), calculate the traffic channel of the sub-district of 1 BCCH channel and can use the formula of number C to be:
C=cell configuration carrier frequency number * n-1;
Wherein, n representes the number of a SDCCH subchannel that physical channel was divided in the SDCCH channelling mode.
Further, aforesaid a kind of SDCCH channel arrangement method, when the SDCCH channel redundancy being set spending, in the step (1), the formula that calculates the SDCCH telephone traffic is:
SD_TF＝SDCCH_SEIZ_ATT×(1+A)×7/3600；
Wherein, SD_TF representes the SDCCH telephone traffic, and SDCCH_SEIZ_ATT representes the request times of SDCCH channel in the network, and A representes the channel redundancy degree.
Further again, aforesaid a kind of SDCCH channel arrangement method, the span 0～50% of said A.
Further, aforesaid a kind of SDCCH channel arrangement method, in the step (3), confirm that the concrete mode of configuration of SDCCH channel of sub-district is following:
1) can use number C according to the traffic channel of sub-district, confirm the TCH channel number X of sub-district
1With SDCCH channel number Y
1, wherein, X
1+ Y
1=C;
2) the inquiry ERLANG B obtains X
1The TCH telephone traffic T that individual TCH channel is supported, and Y
1The SDCCH telephone traffic D that individual SDCCH channel is supported;
3) whether check T/D less than R,, then return the TCH channel number X that step 1) is confirmed the sub-district again if not if then get into step 4)
1With SDCCH channel number Y
1
4) check the number N of the SDCCH channel that the sub-district takies at most in the setting-up time section;
5) confirm the number Z of the SDCCH channel of sub-district, Z=Max (Y, Y
1, N), wherein, the number of the SDCCH channel that Y confirms when spending for the SDCCH channel redundancy is not set.
Beneficial effect of the present invention is: the present invention takies the relevant statistics and the sub-district hardware configuration information of SDCCH channel according to the GSM mobile communication subscriber; The effectively reasonable disposition of assessment channel, and the channel ratio that can mate optimum according to the traffic model of reality.This method does not receive region and other factor affecting just can carry out reasonable assessment to regional cell channel configuration, dynamically adjusts the channel ratio, makes telephone traffic reach balanced, realizes the optimization of resource distribution.
Description of drawings
Fig. 1 is the flow chart of a kind of SDCCH channel arrangement method in the embodiment;
The particular flow sheet of SDCCH channel configuration when Fig. 2 spends in the embodiment channel redundancy not being set;
The particular flow sheet of SDCCH channel configuration when Fig. 3 spends in the embodiment channel redundancy being set.
Embodiment
Below in conjunction with Figure of description and embodiment the present invention is done further detailed description.
Fig. 1 shows the flow chart of a kind of SDCCH channel arrangement method of the present invention, and this method mainly may further comprise the steps:
Step 1: according to the traffic measurement of treating configuring area SDCCH telephone traffic, TCH telephone traffic and the TCH telephone traffic of zoning and the ratio R of SDCCH telephone traffic as a result;
The present invention takies the relevant statistics and the sub-district hardware configuration information of SDCCH channel according to the GSM mobile communication subscriber, effectively assesses the reasonable disposition of channel.At first obtain the relevant statistics of LAC/BSC level, according to relevant traffic measurement SDCCH telephone traffic, TCH telephone traffic and the TCH telephone traffic of zoning and the ratio R of SDCCH telephone traffic as a result.
In the reality conversation, the SDCCH channel has been born following three types of main tasks:
RRM (RR), mobile management (MM), subscriber service class (Subscriber Service); The duration that variety of event takies the SDCCH channel can come out through counter counter, and combines the TCH telephone traffic, carrier frequency configuration, the structure of information reasonable assessment SDCCH channel configurations such as number of users.The present invention takies duration calculation SDCCH telephone traffic and TCH telephone traffic according to the event type and the incident of SDCCH channel occupancy just.In the taking of SDCCH channel, can summarize 7 big types of incidents, each incident all can take certain time length; Through gathering the holding time of all incidents; Can calculate the SDCCH telephone traffic, combine TCH telephone traffic and number of users information again, can obtain this area traffic accounting model.
At first, mark off the incident that takies the SDCCH channel, (LU is upgraded in the position; Location Updateding) (be labeled as A1), short message (Short Messaging Service) is labeled as A2), caller (being labeled as A3); Called (being labeled as A4); IMSI adheres to and separates (being labeled as A5), facsimile service (A6), supplementary service (A10).Each incident takies duration empirical value such as following table:
| Incident | Take duration (second) |
| The position is upgraded | 3.5 |
| Shutdown/start | 2.9/3.5 |
| Caller | 2.7 |
| Called | 2.9 |
| Short message | 6.2 |
| Fax (caller/called) | 2.7/2.9 |
| Supplementary service | 0.9 |
In this execution mode, calling and called are referred to as calling, its time takies duration and gets both averages 2.8 seconds.User's start is divided into three kinds of situation:
1. user's access network for the first time, data storage card (SIM) can not find original position district identification code (LAI), starts a position renewal.
2.IMIS adhere to if LAI and former sub-district are inconsistent, enable position renewal process then, holding time is 3.5 seconds.
3. the user is not start for the first time, and LAI is consistent with former sub-district, then only carries out the IMSI attaching process.
Formula conventional when calculating the SDCCH telephone traffic is:
SDCCH?TRAFFIC＝AVE_BUSY_SDCCH/RES_AV_DENOM15
When adopting this formula to calculate; Since SDCCH to take duration very short; And the scan period of SDCCH telephone traffic is 20S (res av_denom15=180), so the value of the SDCCH telephone traffic that this formula calculates is very inaccurate, particularly when the lower sub-district of SDCCH telephone traffic.Therefore adopt other a kind of computational methods during the telephone traffic of this execution mode in calculating traffic model, computing formula is following:
SDCCH_TRAFFIC＝((SDCCH_CALL)×T
1+(SDCCH_SMS)×T
2+(SUCC_SEIZ_SUPPLEM_SERV)×T
3+(SDCCH_LOC_UPD)×T
4+(IMSI_DETACH_SDCCH)×T
5)/3600； (1)
Wherein, SDCCH_TRAFFIC representes the SDCCH telephone traffic, and SDCCH_CALL representes that calling takies number of times, and SDCCH_SMS representes that short message takies number of times; SUCC_SEIZ_SUPPLEM_SERV representes that supplementary service takies number of times; SDCCH_LOC_UPD representes that the position is upgraded and takies number of times, and IMSI_DETACH_SDCCH representes that IMSI adheres to separating and takies number of times, T
1, T
1, T
3, T
4, T
5Represent all types of durations that takies respectively.
Wherein call out cause take number of times SDCCH_CALL, computational methods are following:
SDCCH_CALL＝SUCC_SEIZ_ORIG+SUCC_SEIZ_TERM+SDCCH_CALL_RE_EST+SDCCH_EMERG_CALL；
SUCC_SEIZ_ORIG, SUCC_SEIZ_TERM, SDCCH_CALL_RE_EST, SDCCH_EMERG_CALL all represent counter (counter).Wherein, SUCC_SEIZE_ORIG representes successfully to take number of times by the SDCCH channel request that caller MOC (MOBILE ORIGINATING CALL) initiates, when BSC (Base Station Controller base station controller) receives BTS (Base Transceiver Station base transceiver station.) when comprising (CM service request) in foundation indication (ESTABLISH INDICATION) message of sending, this counter of SUCC_SEIZE_ORIG adds 1.。
SUCC_SEIZE_TERM representes to take number of success by the SDCCH channel request that called MTC (MOBILE TERMINATED CALL) initiates: when BSC receives that when comprising (paging response) in foundation indication (ESTABLISHINDICATION) message that BTS sends, counter adds 1.
SDCCH_CALL_RE_EST representes because the SDCCH channel request that call re-establishment (RE_ESTABLISHMENT) is initiated takies number of success; When BSC receives that when comprising (call re_establishment) in foundation indication (ESTABLISH INDICATION) message that BTS sends, counter adds 1.
SDCCH_EMERG_CALL representes because the SDCCH channel request that urgent call (EMERGENCY CALL) is initiated takies the number of times of success: when BSC receives that when comprising (emergeney call) in foundation indication (ESTABLISH INDICATION) message that BTS sends, counter adds 1.
Because SDCCH_CALL is the accumulation result of above-mentioned counter, so the increase of above-mentioned counter also can bring and call out the increase that takies number of times SDCCH_CALL that causes.
Note causes takies number of times SDCCH_SMS, and computational methods are following:
SDCCH_SMS＝SUCC_SDCCH_SMS_EST+UNSUCC_SDCCH_SMS_EST；
SUCC_SDCCH_SMS_EST, UNSUCC_SDCCH_SMS_EST are counter (coutner).Wherein, SUCC_SDCCH_SMS_EST is illustrated in the successful number of times of short message foundation on the SDCCH channel; UNSUCC_SDCCH_SMS_EST is illustrated in the number of times of short message foundation failure on the SDCCH channel.
The formula that calculates the TCH telephone traffic is:
TCH_TRAFFIC＝ave_busy_tch/res_av_denom14； (2)
Wherein, TCH_TRAFFIC representes the TCH telephone traffic, and ave_busy_tch representes TCH channel occupancy duration, and res_av_denom14 representes the scan period of TCH telephone traffic.
The present invention can also count LAC zone number of users according to above-mentioned LAC: (Nokia's equipment can be used the inquiry of SQL script)
LAC_SUB＝SUBSC_IN_LA (3)
Can calculate average every user TCH and SDCCH telephone traffic and full LAC zone TCH and SDCCH telephone traffic accounting situation through above-mentioned (1) (2) (3) formula:
Average every user SDCCH and TCH telephone traffic:
TCH_TRFFIC_AVE＝TCH?TRAFFIC/LAC_SUB (4)
SDCCH_TRAFFIC_SUB＝SDCCH_TRAFFIC/LAC_SUB (5)
The TCH telephone traffic and the SDCCH telephone traffic ratio R in LAC zone:
R＝TCH_TRAFFIC/SDCCH_TRAFFIC (6)
Calculate the traffic model in LAC zone through above-mentioned formula (1)～(6).
Step 2: according to the carrier frequency configuration of sub-district, the traffic channel of calculation plot can be used number C;
According to the traffic model in above-mentioned LAC zone, calculates and saidly treat that the needed cell telephone traffic channel of different carrier frequency allocating cells can be used number in the configuring area, the traffic channel of the sub-district of 1 BCCH channel of calculating can use the formula of number C to be:
C=cell configuration carrier frequency number * n-1; (7)
Wherein, n representes the number of a SDCCH subchannel that physical channel was divided in the SDCCH channelling mode.N can get 4 and 8 two kind of value, considers the paging capacity limited case, and the pattern of SDCCH/8 is adopted in the configuration of general recommendations cell carrier frequencies, and just the n value is 8 situation.Under this configuration mode, the traffic channel of sub-district can be used number C=cell configuration carrier frequency number * 8-1.
Step 3: the SDCCH channel configuration that can confirm the sub-district according to the traffic channel of sub-district with number C and ratio R.
Can confirm the channel configuration of sub-district with number C according to the traffic channel that calculates in the TCH telephone traffic of being calculated in the step 1 and SDCCH telephone traffic ratio R and the step 2, the method flow diagram of configuration is as shown in Figure 2:
A. at first, can use number C, confirm the TCH channel number X and the SDCCH channel number Y of sub-district according to the traffic channel of sub-district, wherein, X+Y=C;
B. inquire about ERLANG B, obtain TCH telephone traffic T and Y the SDCCH telephone traffic D that the SDCCH channel is supported that X TCH channel supported;
C. whether check T/D less than R,, then return TCH channel number X and SDCCH channel number Y that step a confirms the sub-district again if not if the channel configuration then among the step b is reasonable.
Wherein, check ERLANG B according to the TCH percent of call lost and the SDCCH percent of call lost among the step b, obtain TCH telephone traffic T and Y the SDCCH telephone traffic D that the SDCCH channel is supported that X TCH channel supported.The TCH percent of call lost and the SDCCH percent of call lost generally all adopt empirical value, and the TCH percent of call lost is 2%, and the SDCCH percent of call lost is 0.5%, can certainly adopt other value as required.
The SDCCH channel configuration number Y that calculates through said method is theoretic reasonable value, does not consider to have the congested situation of SDCCH burst in the real network, and the channel redundancy degree is not set.In real network, be unlikely to occur congested for guaranteeing when initiating a large amount of SDCCH request channel, need to guarantee certain channel redundancy degree A.When channel redundancy degree A is set; Calculate the telephone traffic of SDCCH according to existing network SDCCH request times SDCCH_SEIZ_ATT (being arranged in Table table P_NBSC_TRAFFIC); Suppose that all distribute success and average occupied duration is that 7S (introduces according to the front at every turn; The average occupied duration of each incident of SDCCH has so just guaranteed certain redundancy all less than 7S), the formula that calculates the SDCCH telephone traffic of each sub-district in this case in the step 1 is:
SD_TF＝SDCCH_SEIZ_ATT×(1+A)×7/3600；
Wherein, SD_TF representes the SDCCH telephone traffic, and SDCCH_SEIZ_ATT representes the request times of SDCCH channel in the network, and A representes the channel redundancy degree.A is the redundancy that is provided with flexibly, span 0～50%.
At this moment, in the step 3, confirm that the flow chart of cell channel configuration is as shown in Figure 3:
1) at first, can use number C, confirm the TCH channel number X of sub-district according to the traffic channel of sub-district
1With SDCCH channel number Y
1, wherein, X
1+ Y
1=C;
2) the inquiry ERLANG B obtains X
1The TCH telephone traffic T that individual TCH channel is supported, and Y
1The SDCCH telephone traffic D that individual SDCCH channel is supported;
3) whether check T/D less than R,, then return the TCH channel number X that step 1) is confirmed the sub-district again if not if then get into step 4)
1With SDCCH channel number Y
1
4) check the number N of the SDCCH channel that the sub-district takies at most in the setting-up time section; The N value can be found out according to the PEAK_BUSY_SDCCH of sub-district;
5) confirm the number Z of the SDCCH channel of sub-district, Z=Max (Y, Y
1, N), wherein, the number of the SDCCH channel that Y confirms when spending for the SDCCH channel redundancy is not set.
Y before getting, Y
1(Y, M N) are the required SDCCH number in sub-district with the maximum Z=Max of N.When gathering the traffic measurement data; Advise the data (abundant number of samples guarantees) of continuous 7 days 7:00-23:00; SDCCH_SEIZ_ATT and PEAK_BUSY_SDCCH get mean value separately respectively, promptly get SDCCH_SEIZ_ATT continuous 7 days the statistics in peak hour every day section (like 9:00-12:00 morning, late 18:00-21:00; This period is different because of different districts and cities traffic model) mean value, and round up.Get PEAK_BUSY_SDCCH maximum of every day in continuous 7 days statistics, ask these peaked arithmetic means then, and round up.Calculate the quantity of the SDCCH that can optimize according to aforementioned algorithm.
Confirm the method for SDCCH configuration through the channel redundancy degree is set, be specially adapted to the main line of communication, be positioned at the intensive sub-district of LAC border and traffic, can guarantee when initiating a large amount of SDCCH request, to be unlikely to occur congested like this.
Below in conjunction with specific embodiment the present invention is further specified.
Embodiment
With certain city is example:
On April 6 to 12, the mean place update times was 431935 times when this city was busy, and the call setup number of times is 359016 times, and it is 88360 times that note is set up number of times, and shutdown is 6953 times, and the number of times that other reasons takies is 52836 times.The actual telephone traffic of calculating SDCCH like this is:
SDCCH_TRAFFIC=(position update times * 3.5+ call setup number of times * 2.8+ note number of times * 6.2+ shut down number of times * 2.9+ other reasons * 0.9)/3600
＝(431935×3.5+359016×2.8+88360×6.2+6953×2.9+52836×0.9)/3600
=870.15 Ireland
The average telephone traffic of TCH is:
TCH_TRAFFIC=6901 Ireland
Number of users is: LAC_SUB=290373.
The traffic model that can calculate this city thus is:
The telephone traffic of every user TCH is: T_TRAFFIC_SUB=23.77mERL.
Every user's SDCCH telephone traffic is: SD_TRAFFIC_SUB=3.00mERL.
The telephone traffic ratio of TCH and SDCCH is: R=T_TRAFFIC/SD_TRAFFIC=7.93.
In view of the above, can make the required SDCCH number of channel of different carrier frequency.
Computational process is following:
Suppose this sub-district, city 6 years configuration, suppose that the TCH number of channel is X, the SDCCH/8 number of channel is Y, and then useful traffic channel can be with ading up to:
X+Y=6 * 8-1=47 bar
Can use sum to confirm the TCH channel number X and the SDCCH channel number Y of sub-district according to useful traffic channel afterwards, wherein, X+Y=C, specific as follows:
If Y=1, X=46, the corresponding telephone traffic separately of inquiry ERLANG B, the telephone traffic of the SDCCH of support is (call loss is 0.5%): 2.72 Ireland.The telephone traffic of the TCH that supports is (call loss is 2%): 35.8 Ireland.
T/D＝35.8/2.72＝13.16＞R＝7.93。Do not satisfy the T/D＜R among the step c, so this unreasonable allocation.At this moment, confirm the TCH channel number X and the SDCCH channel number Y of sub-district more again:
If Y=2, X=45, the corresponding telephone traffic separately of inquiry ERLANG B, the telephone traffic of the SDCCH of support is (call loss is 0.5%): 8.06 Ireland.The telephone traffic of the TCH that supports is (call loss is 2%): 34.9 Ireland.
T/D＝34.9/8.06＝4.33＜R＝7.93。Satisfy condition, therefore should dispose rationally.
Perhaps
If Y=3, X=44, the corresponding telephone traffic separately of inquiry ERLANG B, the telephone traffic of the SDCCH of support is (call loss is 0.5%): 14.13 Ireland.The telephone traffic of the TCH that supports is (call loss is 2%): 34 Ireland.
T/D＝34/14.13＝2.4＜R＝7.93。Satisfy equation (9), therefore should dispose rationally.
Get final product X (the TCH number of channel) in the calculating channel layoutprocedure, the reasonable value on Y (the SDCCH number of channel) Allocation Theory through this method
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technology thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. SDCCH channel arrangement method may further comprise the steps:
(1) obtains the traffic measurement result who treats configuring area, calculate this regional SDCCH telephone traffic and TCH telephone traffic, and obtain the TCH telephone traffic and the SDCCH telephone traffic ratio R in zone;
(2) according to the carrier frequency configuration of the sub-district that is positioned at said zone, the traffic channel of calculation plot can be used number C;
(3) configuration that can confirm the SDCCH channel of sub-district with the TCH telephone traffic and the SDCCH telephone traffic ratio R in number C and zone according to the traffic channel of sub-district.
2. a kind of SDCCH channel arrangement method as claimed in claim 1 is characterized in that: in the step (1), when the SDCCH channel redundancy not being set spending, take duration calculation SDCCH telephone traffic and TCH telephone traffic according to the event type and the incident of SDCCH channel occupancy; Said event type comprise position renewal, short message, calling, IMSI adhere to separate, facsimile service and supplementary service.
3. a kind of SDCCH channel arrangement method as claimed in claim 2 is characterized in that: the formula that takies duration calculation SDCCH telephone traffic according to the event type and the incident of channel occupancy is:
SDCCH_TRAFFIC＝((SDCCH_CALL)×T
1+(SDCCH_SMS)×T
2+(SUCC_SEIZ_SUPPLEM_SERV)×T
3+(SDCCH_LOC_UPD)×T
4+(IMSI_DETACH_SDCCH)×T
5))/3600；
Wherein, SDCCH_TRAFFIC representes the SDCCH telephone traffic, and SDCCH_CALL representes that calling takies number of times, and SDCCH_SMS representes that short message takies number of times; SUCC_SEIZ_SUPPLEM_SERV representes that supplementary service takies number of times; SDCCH_LOC_UPD representes that the position is upgraded and takies number of times, and IMSI_DETACH_SDCCH representes that IMSI adheres to separating and takies number of times, T
1, T
2, T
3, T
4, T
5The duration that takies of representing all types of incidents respectively.
4. a kind of SDCCH channel arrangement method as claimed in claim 2 is characterized in that: the formula that takies duration calculation TCH telephone traffic according to the event type and the incident of channel occupancy is:
TCH_TRAFFIC＝ave_busy_toh/res_av_denom14；
Wherein, TCH_TRAFFIC representes the TCH telephone traffic, and ave_busy_tch representes TCH channel occupancy duration, and res_av_denom14 representes the scan period of TCH telephone traffic.
5. like claim 3 or 4 described a kind of SDCCH channel arrangement methods, it is characterized in that: in the step (3), confirm that the concrete mode of configuration of SDCCH channel of sub-district is following:
1. can use number C according to the traffic channel of sub-district, confirm the TCH channel number X and the SDCCH channel number Y of sub-district, wherein, X+Y=C;
2. inquire about ERLANG B, obtain TCH telephone traffic T and Y the SDCCH telephone traffic D that the SDCCH channel is supported that X TCH channel supported;
3. whether check T/D less than R,, then return TCH channel number X and SDCCH channel number Y that 1. step confirms the sub-district again if not if then the channel configuration of step in 2. is reasonable.
6. a kind of SDCCH channel arrangement method as claimed in claim 5; It is characterized in that: step 2. in; Check ERLANG B according to the TCH percent of call lost and the SDCCH percent of call lost, obtain TCH telephone traffic T and Y the SDCCH telephone traffic D that the SDCCH channel is supported that X TCH channel supported.
7. a kind of SDCCH channel arrangement method as claimed in claim 5 is characterized in that: in the step (2), calculate the traffic channel of the sub-district of 1 BCCH channel and can use the formula of number C to be:
C=cell configuration carrier frequency number * n-1;
Wherein, n representes the number of a SDCCH subchannel that physical channel was divided in the SDCCH channelling mode.
8. a kind of SDCCH channel arrangement method as claimed in claim 1 is characterized in that: when the SDCCH channel redundancy being set spending, in the step (1), the formula that calculates the SDCCH telephone traffic is:
SD_TF＝SDCCH_SEIZ_ATT×(1+A)×7/3600；
Wherein, SD_TF representes the SDCCH telephone traffic, and SDCCH_SEIZ_ATT representes the request times of SDCCH channel in the network, and A representes the channel redundancy degree.
9. a kind of SDCCH channel arrangement method as claimed in claim 8 is characterized in that: the span 0～50% of said A.
10. like claim 8 or 9 described a kind of SDCCH channel arrangement methods, it is characterized in that: in the step (3), confirm that the concrete mode of configuration of SDCCH channel of sub-district is following:
1) can use number C according to the traffic channel of sub-district, confirm the TCH channel number X of sub-district
1With SDCCH channel number Y
1, wherein, X
1+ Y
1=C;
2) the inquiry ERLANG B obtains X
1The TCH telephone traffic T that individual TCH channel is supported, and Y
1The SDCCH telephone traffic D that individual SDCCH channel is supported;
3) whether check T/D less than R,, then return the TCH channel number X that step 1) is confirmed the sub-district again if not if then get into step 4)
1With SDCCH channel number Y
1
4) check the number N of the SDCCH channel that the sub-district takies at most in the setting-up time section;
5) confirm the number Z of the SDCCH channel of sub-district, Z=Max (Y, Y
1, N), wherein, the number of the SDCCH channel that Y confirms when spending for the SDCCH channel redundancy is not set.
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| CN102970693A (en) * | 2012-11-09 | 2013-03-13 | 北京拓明科技有限公司 | Standalone dedicated control channel (SDCCH) automatic configuration adjustment method based on traffic system |
| CN103796276A (en) * | 2012-10-31 | 2014-05-14 | 中兴通讯股份有限公司 | Method and system for shortening call establishment time delay |
| CN105848160A (en) * | 2015-01-16 | 2016-08-10 | 中国移动通信集团上海有限公司 | Channel configuration method and device |
| CN109565677A (en) * | 2017-02-20 | 2019-04-02 | 华为技术有限公司 | Network capacity method of adjustment and the network equipment |
| CN111314963A (en) * | 2018-12-11 | 2020-06-19 | 中国移动通信集团吉林有限公司 | Cell load balancing method and device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796276A (en) * | 2012-10-31 | 2014-05-14 | 中兴通讯股份有限公司 | Method and system for shortening call establishment time delay |
| CN102970693A (en) * | 2012-11-09 | 2013-03-13 | 北京拓明科技有限公司 | Standalone dedicated control channel (SDCCH) automatic configuration adjustment method based on traffic system |
| CN102970693B (en) * | 2012-11-09 | 2015-04-22 | 北京拓明科技有限公司 | Standalone dedicated control channel (SDCCH) automatic configuration adjustment method based on traffic system |
| CN105848160A (en) * | 2015-01-16 | 2016-08-10 | 中国移动通信集团上海有限公司 | Channel configuration method and device |
| CN105848160B (en) * | 2015-01-16 | 2019-04-19 | 中国移动通信集团上海有限公司 | A kind of channel arrangement method and device |
| CN109565677A (en) * | 2017-02-20 | 2019-04-02 | 华为技术有限公司 | Network capacity method of adjustment and the network equipment |
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| CN111314963A (en) * | 2018-12-11 | 2020-06-19 | 中国移动通信集团吉林有限公司 | Cell load balancing method and device |
| CN111314963B (en) * | 2018-12-11 | 2022-07-26 | 中国移动通信集团吉林有限公司 | Cell load balancing method and device |
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| CN102547777B (en) | 2014-07-16 |
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