CN100502585C - Method for interface call admission control in communication system - Google Patents
Method for interface call admission control in communication system Download PDFInfo
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- CN100502585C CN100502585C CNB2006100922885A CN200610092288A CN100502585C CN 100502585 C CN100502585 C CN 100502585C CN B2006100922885 A CNB2006100922885 A CN B2006100922885A CN 200610092288 A CN200610092288 A CN 200610092288A CN 100502585 C CN100502585 C CN 100502585C
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004891 communication Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000000875 corresponding effect Effects 0.000 claims description 6
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 9
- 239000002699 waste material Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/83—Admission control; Resource allocation based on usage prediction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/15—Flow control; Congestion control in relation to multipoint traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
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Abstract
The invention relates to an interfaces page access control method of communication system, which comprises that: user sends service request to communication system, to request accessing into the system; communication system receives request, via relative activate factor, to calculate out the occupied interface bandwidth when accesses the requested service; when accesses the service, and the interface bandwidth is over the maximum transmission bandwidth of interface, forbidding accessing said service; or else, allowing. The invention sets different activate factors for different services, to control the bandwidth of interface, to improve utilization and reduce cost.
Description
Technical field
The present invention relates to the method for interface call admission control in a kind of call admission control method that is used for interface, particularly communication system.
Background technology
The wireless access part (UTRAN) of WCDMA system is made up of a plurality of RNSs (RNS), and each RNS comprises 1 radio network controller (RNC) and one or more Node B (NodeB).In RNS inside, link to each other by Iub interface between Node B and the RNC, link to each other by the Iur interface between RNC and the RNC, and Node B communicates by letter with subscriber equipment (UE) by air interface.
Because Iub interface transmission bandwidth resource-constrained between RNC in the WCDMA system and the Node B, therefore, the transmission bandwidth that the Iub interface telephone traffic is consumed generally can not surpass the available maximum transmission bandwidth resource of physics.The total transmission bandwidth resource that consumes as initiate user and former user has surpassed the available maximum transmission bandwidth resource of physics, and RNC will pass through admission control algorithm, forbids new user's access.
In the WCDMA system, Iub interface generally adopts atm adaptation layer 2, and (ATM AdaptationLayer 2, AAL2), the bandwidth of mentioning here is meant the AAL2 bandwidth.
Figure 1 shows that the flow chart of Admission Control in the WCDMA system.This control procedure is specific as follows: at first, in step 100, the user sends service request to the WCDMA system, and request inserts the WCDMA system and carries out its business; System is after the request of receiving, the AAL2 bandwidth (step 101) of the Iub interface that calculating will take after the business that inserts user's request, and then calculate the maximum transmission bandwidth (step 102) whether AAL2 bandwidth shared after inserting this customer service can surpass Iub interface.When judged result is AAL2 bandwidth shared after inserting this customer service can be above the maximum transmission bandwidth of Iub interface the time (being), forbid inserting this user's business (step 103); Otherwise, when judged result can not surpass the maximum transmission bandwidth of Iub interface for AAL2 bandwidth shared after inserting this customer service (deny), allow this customer service (step 104) of access.
The starting point of prior art is to guarantee that the Iub transmission bandwidth is not congested, promptly the maximum bandwidth of the CU of Iub interface can surpass in no instance Iub interface maximum transmission bandwidth.Therefore every kind of business all is used as the access control foundation with full rate,, in the process of the AAL2 bandwidth that takies, thinks that all business of current access are all come occupied bandwidth with full rate after computing service inserts that is.
Only disposing 1 E1 standard transmission interface with the physical layer of Iub transmission is example, and establishing its AAL2 bandwidth chahnel maximum is 1760k, and only there are two kinds of business in supposing the system, adaptive multi-rate (AMR) speech business and packet domain (PS) 384k business.In this case, according to prior art, total AAL2 bandwidth consumption computing formula is as follows:
The AAL2 bandwidth formula (1) that AAL2 bandwidth+N * full rate AMR speech business that AAL2 bandwidth wastage in bulk or weight=M * full rate PS 384k business takies takies
Wherein, M is the number of the full rate PS 384k business of access, and N is the number of the full rate AMR speech business 12.2K of access.
Here, it may be noted that in actual applications that in order to improve efficiency of transmission, need encapsulate by the FP/AAL2 agreement for the data that transmit, this can increase extra expense on E1 standard transmission interface.Form that can encapsulate according to the FP/AAL2 agreement and professional actual bandwidth calculate the AAL2 bandwidth that this business takies.For example, the PS 384k business of professional full rate bandwidth 384kbps will take AAL2 bandwidth 553kbps under the situation of full rate, and the AMR voice of professional full rate bandwidth 12.2kbps will take AAL2 bandwidth 23.4kbps under the full rate situation.Therefore, in the calculating of total AAL2 bandwidth occupancy, use all be the AAL2 bandwidth that every kind of business takies under the full rate situation.Because the AAL2 bandwidth chahnel mostly is 1760k most, so AAL2 bandwidth wastage in bulk or weight must be less than 1760k.
Therefore, if the number of the PS 384k business of the current AAL2 bandwidth of using Iub interface is M, the number of AMR speech business is N, and supposition has the user to ask to insert new AMR speech business, then the professional AAL2 bandwidth that takies with (N+1) individual full rate AMR speech business of M full rate 384k is calculated as total AAL2 bandwidth consumption according to formula (1) by system, and judges that whether this value is 1760k greater than AAL2 bandwidth chahnel maximum.
If when shared AAL2 bandwidth can be 1760k above AAL2 bandwidth chahnel maximum after this customer service of judged result explanation access, then forbid inserting this user's AMR speech business; Otherwise, when shared AAL2 bandwidth can be not 1760k above AAL2 bandwidth chahnel maximum after the judged result explanation inserts this customer service, allow to insert this customer service.
Can guarantee that like this AAL2 bandwidth wastage in bulk or weight is no more than the available maximum transmission bandwidth resource of physics, thereby it is congested can not transmission bandwidth to take place.
But in actual conditions, every kind of business, for example AMR speech, circuit domain (CS) data, PS data service etc., the actual bandwidth that takies all is with certain probability distribution.Can think that all there is an activity factor in the actual occupied bandwidth of every kind of business for full rate transmission, activity factor just embodied should business full rate transfer of data probability, this probability is generally all less than 1.The bandwidth that takies during therefore with the miscellaneous service full rate is calculated the total bandwidth that the takies standard as access control, though guaranteed that the Iub transmission bandwidth is not congested, there is bigger waste in the transmission bandwidth resource.
Summary of the invention
The objective of the invention is to propose method for interface call admission control in a kind of communication system, overcome the problem of the transmission bandwidth wasting of resources that exists in the prior art.
For achieving the above object, method for interface call admission control in the communication system provided by the invention may further comprise the steps: step 100, and the user sends service request to communication system, and the request access communication system is carried out its business;
Wherein, described communication system is the WCDMA system.The business that described request inserts is at least a business in AMR voice service, CS data service and the PS data service.
Compared with prior art, beneficial effect of the present invention is: by at different business different activity factors being set respectively, utilize activity factor to calculate the control bandwidth of interface access, can improve the interface transmission bandwidth utilization ratio, save the network O﹠M cost.
Description of drawings
Fig. 1 is the flow chart of Admission Control process in the existing WCDMA system.
Fig. 2 is the flow chart of Admission Control process in the WCDMA of the present invention system.
Embodiment
Iub interface transmission bandwidth resource between the RNC of WCDMA system and the Node B is very limited, the bandwidth that prior art takies during with the miscellaneous service full rate is calculated the total bandwidth that the takies standard as access control, though guaranteed that the Iub transmission bandwidth is not congested, there is bigger waste in the transmission bandwidth resource.
In order to improve Iub transmission bandwidth utilization ratio, save the network operation maintenance cost, the present invention is provided with different activity factors at different business (for example AMR business, PS 384k etc.) respectively, promptly reach the probability of full rate bandwidth occupancy, calculate control bandwidth as the Iub interface permit standard.
According to call admission control method of the present invention as shown in Figure 2.Detailed process is: at first, in step 200, the user sends service request to the WCDMA system, and request inserts the WCDMA system and carries out its business; System is after the request of receiving, the professional corresponding activity factor that inserts by request calculates the AAL2 bandwidth (step 201) of the Iub interface that will take after the business that inserts user's request, and then calculates the maximum transmission bandwidth (step 202) whether AAL2 bandwidth shared after inserting this customer service can surpass Iub interface.When judged result is AAL2 bandwidth shared after inserting this customer service can be above the maximum transmission bandwidth of Iub interface the time (being), forbid inserting this user's business (step 203); Otherwise, when judged result can not surpass the maximum transmission bandwidth of Iub interface for AAL2 bandwidth shared after inserting this customer service (deny), allow this customer service (step 204) of access.
Can see that the method for the prior art shown in the flow chart of call admission control method of the present invention and Fig. 1 is basic identical.Unique difference is, among the present invention, in the bandwidth occupancy of step 201 calculates, for activity factor of each traffic set, represent that this business reaches the probability of full rate in transmission course, and supposition is in transmission course, and the bandwidth that each business takies is the product of its full rate AAL2 bandwidth with corresponding activity factor.This is different from the full rate AAL2 bandwidth that takies with each business in the step 101 of flow chart of Fig. 1 and calculates the total AAL2 bandwidth that takies.
For illustrative purposes, only allowing to insert professional these the two kinds of business of AMR speech business and PS 384k with system is that example illustrates according to call admission control method of the present invention.And suppose that AMR speech business AAL2 activity factor is p, suppose that promptly the actual bandwidth that takies of each road AMR speech business is full rate bandwidth (AMR Alloc BW) 23.4kbps * p in the actual transmissions process; The PS 384K activation of service factor is q, and promptly the professional actual bandwidth that takies of each road PS 384K is full rate bandwidth 533kbps (PS data Alloc BW) * q in the actual transmissions process.P wherein, two parameter values of q are between 0 to 1.
Therefore, M PS 384K data service and N AMR speech business arranged on the Iub interface under the situation of transmission, according to top supposition, the transmission total bandwidth that current all service admittance control take (AAL2 Total Addmission BW) is:
The AAL2 bandwidth that AAL2 bandwidth * q+N * full rate AMR speech business takies * p formula (2) that AAL2 bandwidth wastage in bulk or weight=M * full rate PS 384k business takies
Generally speaking, parameter p, q can determine according to the actual operation of network.For example, it is less that the full rate number passes probability in the time of a plurality of PS 384K business, and r can get 0.5, and the probability of AMR speech full rate is medium, and p can get a less value as 0.7, by that analogy.
Therefore, according to call admission control method of the present invention, if the number of the PS data service of the current AAL2 bandwidth of using Iub interface is M, the number of AMR speech business is N.And supposition has the user to ask to insert new AMR speech business in step 200, then AAL2 bandwidth that M PS data service and (N+1) individual AMR voice service take is calculated as total AAL2 bandwidth consumption (step 201) according to formula (2) by system, and judges that whether this value is 1760k (step 202) greater than AAL2 bandwidth chahnel maximum.
If when shared AAL2 bandwidth can be 1760k above AAL2 bandwidth chahnel maximum after this customer service of judged result explanation access (being), forbid inserting this user's AMR speech business (step 203); Otherwise, when shared AAL2 bandwidth can be not 1760k above AAL2 bandwidth chahnel maximum after the judged result explanation inserts this customer service (denying), allow to insert this customer service (step 204).
After operator determines an initial parameter p, q value, need the actual blocking probability of monitoring network Iub interface transmission bandwidth,, need the value of time update parameter p, q if it is bigger to block probability of happening, both save the Iub transmission bandwidth to reach, again obstruction is controlled at the low-level purpose of trying one's best.
For example, adopt the full rate bandwidth scheme of prior art, for the AAL2 bandwidth chahnel maximum of 1760k, permission allows to insert the PS 384k business of 3 384k and the AMR speech businesses of 4 12.2k, perhaps the AMR speech business of the PS 384k of 3 384k business and 4 12.2k at most simultaneously.
And adopt activity factor bandwidth scheme of the present invention, at q=0.5; Under the situation of p=0.7, can allow to insert the PS 384k business of 6 384k and the AMR speech business of 6 12.2k, perhaps the AMR speech business of the PS 384k of 4 384k business and 40 12.2k at most; The perhaps AMR speech business of the PS 384k of 3 384k business and 56 12.2k.
According to the present invention, can save the Iub transmission bandwidth, promptly identical Iub transmission bandwidth can allow to insert more user, and the Iub that causes blocks the scope that also can receive an operator.
Below for purposes of illustration, only allow to insert the PS384K data service with system and AMR speech business both of these case is that example has illustrated call admission control method of the present invention.Should be appreciated that the situation that has multiple business for system simultaneously, can use thought of the present invention similarly, get probability, set different activity factors, carry out the calculating of Iub interface access control bandwidth according to different business full rate occupied bandwidth.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (3)
1. method for interface call admission control in the communication system is characterized in that, may further comprise the steps:
Step 100, the user sends service request to communication system, and the request access communication system is carried out its business;
Step 101, communication system according to the full rate bandwidth of the business of asking to insert and the professional corresponding activity factor of described access, obtain the interface bandwidth that will take after the business that inserts user's request after the request of receiving; The professional corresponding activity factor of described access is made amendment according to the actual blocking probability of Iub interface in the communication system;
Step 102 when shared interface bandwidth surpasses the maximum transmission bandwidth of interface after the business that is inserting user's request, forbid inserting this user's business, otherwise permission inserts this user's business.
2. the method for claim 1 is characterized in that, described communication system is the WCDMA system.
3. require 1 or 2 described methods as profit, it is characterized in that, the business that described request inserts is at least a business in AMR voice service, CS data service and the PS data service.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100922885A CN100502585C (en) | 2006-06-16 | 2006-06-16 | Method for interface call admission control in communication system |
| PCT/CN2007/001284 WO2007147313A1 (en) | 2006-06-16 | 2007-04-19 | A method and device for call admission control of communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100922885A CN100502585C (en) | 2006-06-16 | 2006-06-16 | Method for interface call admission control in communication system |
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| Publication Number | Publication Date |
|---|---|
| CN1968522A CN1968522A (en) | 2007-05-23 |
| CN100502585C true CN100502585C (en) | 2009-06-17 |
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| CNB2006100922885A Expired - Fee Related CN100502585C (en) | 2006-06-16 | 2006-06-16 | Method for interface call admission control in communication system |
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| CN (1) | CN100502585C (en) |
| WO (1) | WO2007147313A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101494877B (en) * | 2008-01-23 | 2012-08-22 | 华为技术有限公司 | Admittance control method and apparatus of radio communication system |
| CN102076015A (en) * | 2010-11-16 | 2011-05-25 | 上海华为技术有限公司 | Method and device for controlling voice activity factor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6169738B1 (en) * | 1997-11-06 | 2001-01-02 | Lucent Technologies Inc. | Method for call admission in packet voice system using statistical multiplexing and dynamic voice encoding |
| EP1486090A1 (en) * | 2002-03-13 | 2004-12-15 | Telefonaktiebolaget LM Ericsson (publ) | Connection admission control in packet-oriented, multi-service networks |
| GB0320469D0 (en) * | 2003-09-01 | 2003-10-01 | Nokia Corp | A method of controlling connection admission |
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2006
- 2006-06-16 CN CNB2006100922885A patent/CN100502585C/en not_active Expired - Fee Related
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2007
- 2007-04-19 WO PCT/CN2007/001284 patent/WO2007147313A1/en active Application Filing
Non-Patent Citations (2)
| Title |
|---|
| 3G网络规划业务模型构建探讨. 陶茂弟.移动通信，第3期. 2004 |
| 3G网络规划业务模型构建探讨. 陶茂弟.移动通信，第3期. 2004 * |
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| Publication number | Publication date |
|---|---|
| CN1968522A (en) | 2007-05-23 |
| WO2007147313A1 (en) | 2007-12-27 |
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