CN101242351B - ATM transmission bandwidth receiving control method - Google Patents
ATM transmission bandwidth receiving control method Download PDFInfo
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- CN101242351B CN101242351B CN200710063797XA CN200710063797A CN101242351B CN 101242351 B CN101242351 B CN 101242351B CN 200710063797X A CN200710063797X A CN 200710063797XA CN 200710063797 A CN200710063797 A CN 200710063797A CN 101242351 B CN101242351 B CN 101242351B
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Abstract
The invention discloses an admission control method of ATM transmission bandwidth, comprising the steps of: step A. configuring information attributive physical path information for adjacent target network elements; step B. when service being accessed, a second ATM adaptation layer link bearing the service is downwards selected in target network elements, and attributive physical path informationof the ATM adaptation layer is acquired; and step C. bandwidth admitting on the attributive physical path of the ATM adaptation layer, according to the acquired physical path information. The admission control method can make full use of the 248 CID of each AAL2 link, reduce bandwidth fragment on the ATM second adaptation layer (AAL2) adaptation layer, improve resource utilization of transmissionbandwidth, and eliminate non-real-time effect difference caused by big and small bandwidth AAL2 links in current technology.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to the acceptance controlling method of a kind of ATM (AsynchronousTransfer Mode, asynchronous transfer mode) transmission bandwidth.
Background technology
ATM is a kind of transmission means of 3-G (Generation Three mobile communication system) WCDMA (Wideband Code Division MultipleAccess, WCDMA) network.
In the WCDMA network, (PermanentVirtual Channel PVC) goes up when carrying when wireless traffic is mapped to ATM Permanent Virtual Circuit; What adopt is multiplex strategy; What promptly use is that (ATM Adaptation Layer 2, AAL2) type PVC is referred to as the AAL2 link to ATM second adaptation layer.Particularly, be exactly each service bearer to be distributed a gap marker on the AAL2 link time on PVC (Channel Identifier, CID), wherein, the CID of every AAL2 link adds up to 248.
According to the application that is fit to, the COS of ATM PVC can be divided into:
1) (Constant Bit Rate, CBR): the service of fixed rate can be provided, and the requirement strictness the most to service quality such as transmission delay, transmission packet loss and transmission shakes is fit to be applied to the service of promptness or needs fixed-bandwidth to constant bit-rate.This type of PVC configuration parameter mainly be peak cell rate (Peak CellRate, PCR) with cell time-delay change tolerance limit (Cell Delay Variation Tolerance, CDVT).
2) (Variable Bit Rate, VBR): the service quality of VBR provides the assurance of transmission delay with the transmission packet loss variable bit-rate, is primarily aimed at video and to the service of transport latency sensitive.In addition, according to the difference to postponing to require, (Real Time-Variable BitRate is RT-VBR) with non real-time variable bit-rate (Non Real Time-Variable Bit Rate, NRT-VBR) two types can be subdivided into real-time variable bit-rate again; Compare with RT-VBR, NRT-VBR can allow more transmission delay.
3) guarantee bit rate (Available Bite Rate; ABR): the service quality of ABR has guaranteed the minimum transfer bandwidth; Be fit to Internet Protocol (Intemet Protocol, IP) and local area network (LAN) (Local AreaNetwork, service LAN); ABR need provide flow control at the ATM layer, takes place congested or overload to avoid network.
4) (Unspecified Bit Rate, UBR): the service that UBR is fit to is identical with ABR, but does not have any service guarantees for unspecified bit speed.
The acceptance controlling method of conventional ATM transmission bandwidth is to be AAL2 link configuration COS and bandwidth information at present, when service access, directly admit control at the enterprising uplink bandwidth of AAL2 link then, and said AAL2 link COS generally adopts the CBR type.There is following defective in this prior art:
At first, when business was mapped to PVC and go up carries, because multiplexing professional way and each professional speed itself all maybe be along with the time change, so the professional total speed on the AAL2 link changed.At this moment, select CBR type PVC can cause bandwidth waste easily.
Secondly, because miscellaneous service speed does not wait, it is bigger that size differs, and therefore the employed total bandwidth of 248 tunnel sessions can not be expected at configuration phase altogether, so the configured bandwidth of PVC is always less than normal or bigger than normal.The meeting less than normal of PVC configured bandwidth causes the session id wasting of resources, and the PVC configured bandwidth is bigger than normal then can to make bandwidth can not distribute fully and cause bandwidth waste because of session id inadequately.
Also have; The business admission number of big bandwidth is limited if the band width configuration of every AAL2 link is all identical; And the band width configuration of every AAL2 link is inhomogeneous; When the AAL2 link that less AAL2 link of bandwidth and bandwidth are bigger in the AAL2 link then of the same type inserts the non-real-time service of equal number, the non-real-time service weak effect of the AAL2 link that the non-real-time service effect on the less AAL2 link of bandwidth is bigger than bandwidth.
Can know that to sum up prior art obviously exists inconvenience and defective in the admittance control of ATM transmission bandwidth, so be necessary to improve.
Summary of the invention
To above-mentioned defective; The object of the present invention is to provide a kind of acceptance controlling method of ATM transmission bandwidth; Use this method can use 248 road CID of every AAL2 link cmpletely; Can eliminate the bandwidth fragmentation on ATM second adaptation layer (AAL2) link, improve the resource utilization of transmission bandwidth, and can eliminate the difference of the non-real-time service effect that the big or small bandwidth AAL2 link that exists in the prior art causes.
To achieve these goals, the present invention provides a kind of acceptance controlling method of ATM transmission bandwidth, may further comprise the steps:
A, be physical pathway information in abutting connection with the ATM second adaptation layer link configuration of target network element ownership;
B, when service access, under the target network element office direction, select to carry this professional ATM second adaptation layer link, and obtain the physical pathway information of selected ATM second adaptation layer link ownership;
C, according to the physical pathway information of being obtained, admit at the enterprising uplink bandwidth of the physical pathway of ATM second adaptation layer link ownership.
According to the method for the invention, said steps A also comprises:
A1, be physical pathway sign, the effective total bandwidth of physical pathway and/or link COS in abutting connection with ATM second its ownership of adaptation layer link configuration of target network element;
A2, configures physical routing information table, this physical pathway information table comprise physical pathway sign, the effective total bandwidth of physical pathway, real time business occupied bandwidth and/or non-real-time service occupied bandwidth.
According to the method for the invention, said steps A 1 described link COS can be real-time variable bit-rate type, non real-time variable bit-rate type, guarantees bit rate type, unspecified bit speed type.
According to the method for the invention, the effective total bandwidth of said physical pathway is exclusively used in the physical pathway bandwidth that transmits data after for the ATM second adaptation layer link PVC bandwidth of deduction carrier signaling.
According to the method for the invention, said step B also is included as the selected ATM second adaptation layer link assignment gap marker CID; If distribute gap marker CID failure, then reselect and carry this professional ATM second adaptation layer link.
According to the method for the invention, said physical pathway is directly corresponding to the physical connection of asynchronous transfer mode inverse multiplexing IMA group port or synchronous transfer module STM-1 port between network element.
According to the method for the invention, carrying out step B also comprises:
B1, when service access, judge type of service, and according to the corresponding ATM second adaptation layer link of this type of service polling under the target network element office direction;
B2, searches the physical pathway information table of said configuration, with the bandwidth information of the physical pathway that obtains belonging to according to the physical pathway sign of target network element office direction sign and selected ATM second adaptation layer link ownership.
According to the method for the invention, the type of service among the said step B1 comprises real time business and non-real-time service.
According to the method for the invention, among the said step B1 during service access if judging type of service is real time business, step C further comprises:
C11, admittance speed＜=(the effective total bandwidth one real time business occupied bandwidth of physical pathway) of current business more whether; If; The enterprising uplink bandwidth of physical pathway in said ATM second adaptation layer link ownership is admitted; And execution in step C12, otherwise refusal is admitted at the enterprising uplink bandwidth of physical pathway of said ATM second adaptation layer link ownership;
C12, the admittance speed of real time business occupied bandwidth=real time business occupied bandwidth+current business is set.
According to the method for the invention, among the said step B1 during service access if judging type of service is non-real-time service, step C further comprises:
C21, admittance speed＜=(the effective total bandwidth of physical pathway-real time business occupied bandwidth-non-real-time service occupied bandwidth) of current business more whether; If; The enterprising uplink bandwidth of physical pathway in said ATM second adaptation layer link ownership is admitted; And execution in step C22, otherwise refusal is admitted at the enterprising uplink bandwidth of physical pathway of said ATM second adaptation layer link ownership;
C22, the admittance speed of non-real-time service occupied bandwidth=non-real-time service occupied bandwidth+current business is set.
The present invention is the physical pathway information in abutting connection with the AAL2 link configuration ownership of target network element; When service access,, admit at the enterprising uplink bandwidth of physical pathway of AAL2 link ownership according to the physical pathway information of AAL2 link ownership; Thereby can use 248 road CID of every AAL2 link cmpletely; Eliminated the bandwidth fragmentation on the AAL2 link, improved the resource utilization of transmission bandwidth, the difference of the non-real-time service effect that the big or small bandwidth AAL2 link that exists in the elimination prior art causes.Occupied bandwidth when the present invention is to real time business, non-real-time service admittance in addition adds up respectively, preferentially guarantees the admittance of real time business, thereby has guaranteed the real time business good real time performance.
Description of drawings
Fig. 1 is the acceptance controlling method flow chart of ATM transmission bandwidth provided by the invention;
Fig. 2 is a specific embodiment method flow diagram provided by the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Basic thought of the present invention is: be the physical pathway information in abutting connection with the AAL2 link configuration of target network element ownership; When service access, under the target network element office direction, select to carry this professional AAL2 link, and obtain the physical pathway information of selected AAL2 link ownership; According to the physical pathway information of being obtained, admit at the enterprising uplink bandwidth of physical pathway of AAL2 link ownership.
The acceptance controlling method of ATM transmission bandwidth provided by the invention is as shown in Figure 1, comprises the steps:
Step S101 is the physical pathway information in abutting connection with the AAL2 link configuration of target network element ownership.As an embodiment of the invention, this step further comprises physical pathway sign, the effective total bandwidth of physical pathway and/or the link COS of configuration AAL2 link ownership; And configures physical routing information table, this physical pathway information table comprises physical pathway sign, the effective total bandwidth of physical pathway, real time business occupied bandwidth and/or non-real-time service occupied bandwidth.
Step S102 when service access, selects to carry this professional AAL2 link under the target network element office direction, and obtains the physical pathway information of selected AAL2 link ownership.As an embodiment of the invention, also be included as selected AAL2 link assignment gap marker CID; If distribute gap marker CID failure, then reselect and carry this professional AAL2 link.Said AAL2 link comprises 248 and distributes gap marker CID.
Step S103 according to the physical pathway information of being obtained, admits at the enterprising uplink bandwidth of physical pathway of AAL2 link ownership.For ATM transmission, said physical pathway can be directly corresponding to asynchronous transfer mode ATM inverse multiplexing between network element (Inverse Multiplexing on ATM, IMA) physical connection of group port or synchronous transfer module STM-1 port etc.
Fig. 2 is a specific embodiment provided by the invention, and concrete steps are following:
Step S201 is physical pathway sign, the effective total bandwidth of physical pathway and/or the link COS in abutting connection with its ownership of AAL2 link configuration of target network element; Wherein the link COS can be RT-VBR type, NRT-VBR type, ABR type, UBR type, and the effective total bandwidth of said physical pathway is exclusively used in the physical pathway bandwidth that transmits data after for the AAL2PVC bandwidth of deduction carrier signaling.In the present embodiment, real time business is selected RT-VBR for use, and non-real-time service does not have real-time and requires then to select for use UBR.For convenience, the AAL2 link two types have been divided into: A, B.The corresponding RT-VBR type of category-A is used to carry real time business.The corresponding UBR type of category-B, wherein category-B is used to carry non-real-time service.Select for use VBR, ABR, UBR type both can satisfy professional rate variation requirement, and can not monopolize too many band width in physical.Dispose suitable VBR, ABR, UBR PVC number, the band width configuration more parameters of PVC is near the ports physical bandwidth, and then resource utilization is just high more.
Step S202, configures physical routing information table.This physical pathway information table comprises physical pathway sign, the effective total bandwidth B of physical pathway, real time business occupied bandwidth A
RtAnd/or non-real-time service occupied bandwidth A
Nrt
Step S203 carries out the judgement of type of service when service access.Said type of service comprises real time business and non-real-time service.If judging type of service is real time business, execution in step S204, otherwise execution in step S208.
Step S204, polling category-A AAL2 link and distribute gap marker CID under the target network element office direction.If the CID allocation failure is reselected this professional AAL2 link of carrying and is promptly selected next bar category-A AAL2 link.Said AAL2 link comprises 248 and distributes gap marker CID.
Step S205 searches the physical pathway information table of said configuration according to target network element office direction sign and selected AAL2 link corresponding physical ID of trace route path, with the bandwidth information of the physical pathway that obtains belonging to.
Step S206, more whether admittance speed V＜=(the effective total bandwidth B-real time business of the physical pathway occupied bandwidth A of current business
Rt), if, admit at the enterprising uplink bandwidth of physical pathway of said AAL2 link ownership, and execution in step S207, otherwise refusal is admitted at the enterprising uplink bandwidth of physical pathway of said AAL2 link ownership.
Step S207 is provided with real time business occupied bandwidth A
Rt'=real time business occupied bandwidth A
RtThe admittance speed V of+current business, the bandwidth admission process finishes.
Step S208, polling category-B AAL2 link and CID allocation under the target network element office direction.If the CID allocation failure is reselected this professional AAL2 link of carrying and is promptly selected next bar category-B AAL2 link.Said AAL2 link comprises 248 and distributes gap marker CID.
Step S209 searches the physical pathway information table of said configuration according to target network element office direction sign and selected AAL2 link corresponding physical ID of trace route path, with the bandwidth information of the physical pathway that obtains belonging to.
Step S210, more whether admittance speed V＜=(the effective total bandwidth B-real time business of the physical pathway occupied bandwidth A of current business
Rt-non-real-time service occupied bandwidth A
Nrt), if, admit at the enterprising uplink bandwidth of physical pathway of said AAL2 link ownership, and execution in step S211, otherwise refusal is admitted at the enterprising uplink bandwidth of physical pathway of said AAL2 link ownership.
Step S211 is provided with non-real-time service occupied bandwidth A
Nrt'=non-real-time service occupied bandwidth A
NrtThe admittance speed V of+current business, the bandwidth admission process finishes.
Can know that to sum up the present invention eliminates the bandwidth fragmentation on the AAL2 link in the prior art owing to be to admit at the enterprising uplink bandwidth of physical pathway, the maximum transmission bandwidth resource of using; Simultaneously, 248 road CID resources of every AAL2 link can both be by abundant use; In addition, owing to be admittance, also eliminate the non-real-time service difference on effect that big or small band width configuration is different in the present transmission acceptance method AAL2 link causes at the enterprising uplink bandwidth of physical pathway.
In addition, the present invention adds up respectively the occupied bandwidth of real time business, non-real-time service admittance.For real time business, carry out strict bandwidth reservation mechanism; On physical pathway, reserve certain bandwidth when admitting real time business at every turn; After the bandwidth of physical pathway is all kept for real time business, no longer allow to insert new business on this physical pathway.For non-real-time service, adopt the bandwidth reservation mechanism of low priority; On physical pathway, reserve certain bandwidth when admitting non-real-time service at every turn; When keeping for real time business to reach this physical pathway configured bandwidth on certain bar AAL2 link with the bandwidth summation of keeping for non-real-time service; No longer allow to insert new non-real-time service on this physical pathway; Preferentially guarantee the admittance of real time business, thereby guaranteed the real time business good real time performance.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the acceptance controlling method of an ATM transmission bandwidth is characterized in that, may further comprise the steps:
A, be physical pathway information in abutting connection with the ATM second adaptation layer link configuration of target network element ownership;
B, when service access, under the target network element office direction, select to carry this professional ATM second adaptation layer link, and obtain the physical pathway information of selected ATM second adaptation layer link ownership;
C, according to the physical pathway information of being obtained, admit at the enterprising uplink bandwidth of the physical pathway of ATM second adaptation layer link ownership.
2. method according to claim 1 is characterized in that, said steps A also comprises:
A1, be physical pathway sign, the effective total bandwidth of physical pathway and/or link COS in abutting connection with ATM second its ownership of adaptation layer link configuration of target network element;
A2, configures physical routing information table, this physical pathway information table comprise physical pathway sign, the effective total bandwidth of physical pathway, real time business occupied bandwidth and/or non-real-time service occupied bandwidth.
3. method according to claim 2 is characterized in that, said steps A 1 described link COS can be real-time variable bit-rate type, non real-time variable bit-rate type, guarantees bit rate type, unspecified bit speed type.
4. method according to claim 2 is characterized in that, the effective total bandwidth of said physical pathway is exclusively used in the physical pathway bandwidth that transmits data after for the ATM second adaptation layer link PVC bandwidth of deduction carrier signaling.
5. method according to claim 1 is characterized in that, said step B also is included as the selected ATM second adaptation layer link assignment gap marker CID; If distribute gap marker CID failure, then reselect and carry this professional ATM second adaptation layer link.
6. according to each described method of claim 1～5, it is characterized in that said physical pathway is directly organized the physical connection of port or synchronous transfer module STM-1 port corresponding to asynchronous transfer mode inverse multiplexing IMA between network element.
7. according to each described method of claim 2～4, it is characterized in that, carry out step B and also comprise:
B1, when service access, judge type of service, and according to the corresponding ATM second adaptation layer link of this type of service polling under the target network element office direction;
B2, searches the physical pathway information table of said configuration, with the bandwidth information of the physical pathway that obtains belonging to according to the physical pathway sign and the target network element office direction sign of selected ATM second adaptation layer link ownership.
8. method according to claim 7 is characterized in that the type of service among the said step B1 comprises real time business and non-real-time service.
9. method according to claim 8 is characterized in that, among the said step B1 during service access if judging type of service is real time business, step C further comprises:
C11, admittance speed＜=(the effective total bandwidth of physical pathway-real time business occupied bandwidth) of current business more whether; If; The enterprising uplink bandwidth of physical pathway in said ATM second adaptation layer link ownership is admitted; And execution in step C12, otherwise refusal is admitted at the enterprising uplink bandwidth of physical pathway of said ATM second adaptation layer link ownership;
C12, the admittance speed of real time business occupied bandwidth=real time business occupied bandwidth+current business is set.
10. method according to claim 8 is characterized in that, among the said step B1 during service access if judging type of service is non-real-time service, step C further comprises:
C21, admittance speed＜=(the effective total bandwidth of physical pathway-real time business occupied bandwidth-non-real-time service occupied bandwidth) of current business more whether; If; The enterprising uplink bandwidth of physical pathway in said ATM second adaptation layer link ownership is admitted; And execution in step C22, otherwise refusal is admitted at the enterprising uplink bandwidth of physical pathway of said ATM second adaptation layer link ownership;
C22, the admittance speed of non-real-time service occupied bandwidth=non-real-time service occupied bandwidth+current business is set.
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| CN200710063797XA CN101242351B (en) | 2007-02-09 | 2007-02-09 | ATM transmission bandwidth receiving control method |
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| CN200710063797XA CN101242351B (en) | 2007-02-09 | 2007-02-09 | ATM transmission bandwidth receiving control method |
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| CN101242351B true CN101242351B (en) | 2012-02-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445696B1 (en) * | 2000-02-25 | 2002-09-03 | Network Equipment Technologies, Inc. | Efficient variable rate coding of voice over asynchronous transfer mode |
| CN1509023A (en) * | 2002-12-17 | 2004-06-30 | 深圳市中兴通讯股份有限公司上海第二 | Asynchronous transmission mode data dispatching device and method |
| CN1585367A (en) * | 2003-08-19 | 2005-02-23 | 华为技术有限公司 | Transmitter and method of asynchronous transmitting mode data flow |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445696B1 (en) * | 2000-02-25 | 2002-09-03 | Network Equipment Technologies, Inc. | Efficient variable rate coding of voice over asynchronous transfer mode |
| CN1509023A (en) * | 2002-12-17 | 2004-06-30 | 深圳市中兴通讯股份有限公司上海第二 | Asynchronous transmission mode data dispatching device and method |
| CN1585367A (en) * | 2003-08-19 | 2005-02-23 | 华为技术有限公司 | Transmitter and method of asynchronous transmitting mode data flow |
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