CN100375446C - Available management method for asynchronous transmission mode adaptive layer 2 business channel - Google Patents
Available management method for asynchronous transmission mode adaptive layer 2 business channel Download PDFInfo
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- CN100375446C CN100375446C CNB200510064577XA CN200510064577A CN100375446C CN 100375446 C CN100375446 C CN 100375446C CN B200510064577X A CNB200510064577X A CN B200510064577XA CN 200510064577 A CN200510064577 A CN 200510064577A CN 100375446 C CN100375446 C CN 100375446C
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- status flag
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Abstract
The present invention relates to an available management method for an asynchronous transmission mode adaptation layer 2 service (AAL2) passage. An available management unit for AAL2 passages is added to a radio network controller (RNC), and the management unit provides fault state identification and artificial state identification for each AAL2 passage. The management unit can defect whether all AAL2 passages have hardware or software faults or not and the restoring situation of the faults in time and can receive artificial operating commands of prohibited use and permitted use, occlusion is released when equipment runs in the beginning, all the state identification of the AAL2 passages are detected in time, the corresponding operation of occlusion and occlusion release is further executed, the corresponding state identification is modified, and thus, AAL2 resources having the faults in a system are stripped out in time. Service failure is avoided, the use of the AAL2 resources can be recovered in time under permissible conditions, and the method is favorable for the stability of system equipment.
Description
Technical field
The present invention relates to a kind of method that the communication resource is carried out the availability management, relate in particular to a kind of to adopting asynchronous transfer mode (Asynchronous Transfer Mode) (hereinafter to be referred as ATM) technology as the availability management method of AAL 2 business (ATMAdaptation Layer 2) (hereinafter to be referred as the AAL2) channel resource between the network element devices such as core net (Core Network) (hereinafter to be referred as CN), wireless network control device (Radio Network Controller) (hereinafter to be referred as RNC) and base station node B of the 3-G (Generation Three mobile communication system) of terrestrial transmission carrying.
Background technology
When 3-G (Generation Three mobile communication system) used atm technology to carry as terrestrial transmission, the Iu-cs interface between CN and RNC all adopted AAL2 channel transfer voice and data on Iub interface between RNC and base station node B and the Iur interface between RNC.
Will dispose one or more AAL2 passages in advance between two network elements of transceive data, each AAL2 passage identifies with a PathId, and each AAL2 passage can be managed a plurality of subchannels again, and each subchannel uses a Cid to identify.Before using the professional transmission of AAL2 data, must set up logic with access control protocol (Access Link Control Application Protocol) (hereinafter to be referred as ALCAP) between two network elements earlier and connect, each connects a subchannel that uses in the AAL2 passage.
The network element both sides need manage them when using these AAL2 passages.The network element both sides can require some AAL2 passage to carry out resource according to the situation of equipment operation or manual command to reset, ban use of or come into operation again, and these functions are by the resetting of ALCAP agreement, inaccessible and separate seclusion and realize.
The ALCAP agreement has all defined two Status Flags for each end of each bar AAL2 passage: local terminal Status Flag and far-end Status Flag, each Status Flag have inaccessible and separate inaccessible two states.The local terminal Status Flag of one end is corresponding with the far-end Status Flag of the other end.The AAL2 passage that has only local terminal Status Flag and far-end Status Flag all to be configured to separate blocked state can be come into operation.
Fig. 1 is for known obturation and separate the seclusion schematic diagram, has described the signaling message of AAL2 passage transmission and the update method of local terminal Status Flag and far-end Status Flag.The A of AAL2 passage end all is to separate blocked state with the local terminal Status Flag and the far-end Status Flag of B end when initial among the figure, and a seclusion is initiated to the other side respectively earlier in the AB two ends, and the AB two ends are initiated one more respectively and separated seclusion then.As shown in Figure 1, when requiring to ban use of certain AAL2 passage, certain network element just initiates seclusion, the initiator is arranged to blocked state (Local block) to the local terminal Status Flag of AAL2 passage, and send inaccessible demand signalling message (BLO) to the other side's network element, carry in the message by the AAL2 channel number PathId of obturation, receive that the network element of inaccessible request is arranged to blocked state (Remote block) to the far-end Status Flag of corresponding AAL2 passage, send obturation to the other side then and reply signaling message (BLC), this AAL2 passage both sides network element just all can not use like this.
Separate obturation and be inaccessible inverse process, as shown in Figure 1, by the AAL2 passage of obturation, have only and initiate that inaccessible end seclusion of just having the right to initiate to separate.Initiation is separated an inaccessible side and is at first separated inaccessible demand signalling message (UBL) to the transmission of the other side's network element, receive that separating inaccessible network element of asking is arranged to separate blocked state (Remote unblock) to the far-end Status Flag of corresponding AAL2 passage, separate obturation to the other side's transmission then and reply signaling message (UBC), initiation is separated an inaccessible side and is only being received that ability is arranged to separate blocked state (Local unblock) to the local terminal Status Flag of AAL2 passage when separating inaccessible response message, and this AAL2 passage can come into operation again like this.
But there is following problem in use in the AAL2 passage:
1, take place unusually when this locality detects some AAL2 resources, for example transmission network is interrupted, and the unit of being in charge of AAL2 channel resource situation such as break down is at this moment if continue to use these AAL2 passages can cause upper-layer service to come a howler when setting up transmission bearer.
2, the use if some AAL2 channel resource is under an embargo when generation is unusual when recovering from unusual, needs in time they are come into operation once more, otherwise can cause the waste of resource.
3, when just moving at the beginning, system equipment need select one or more AAL2 passages to come into operation, but local device does not also know whether whether the other side's equipment has disposed corresponding AAL2 passage, these AAL2 passages available on to method, apparatus, if correct selection is not made in this locality, might when application AAL2 channel resource, come a howler.
Summary of the invention
For addressing the above problem, the objective of the invention is to propose a kind of method of AAL2 passage availability management of automation.
The availability management method of the AAL2 passage that the present invention proposes is characterized in that increasing an AAL2 passage availability management unit and manages these AAL2 passages in RNC.
Except local terminal Status Flag and far-end Status Flag, above-mentioned administrative unit is provided with two Status Flags for each AAL2 passage again: malfunction sign and artificial Status Flag.Wherein, above-mentioned malfunction sign comprises fault and fault-free two states, is used for writing down each AAL2 passage whether fault has taken place; Above-mentioned artificial Status Flag comprises and bans use of and allow to use two states, is used for representing that whether each AAL2 passage is by artificial banning use of.Wherein, the Status Flag of the above-mentioned AAL2 passage of permission use as shown in Figure 2.
Above-mentioned administrative unit need be carried out following operation:
Operation 1, detect all AAL2 passages in real time whether the fault on the hardware and software taken place, and the recovery situation of fault, according to fault take place with recovery situation carry out corresponding fault trigger inaccessible with separate block service and revise corresponding Status Flag;
Operation 2, receive the artificial operational order used of banning use of and allow in real time, carry out corresponding manual activation inaccessible with separate block service and revise corresponding Status Flag;
Operation 3, actuating equipment powers on to trigger and separates block service when equipment just brings into operation;
Operation 4, regularly detect all Status Flags of AAL2 passage, according to the logical relation between each Status Flag determine whether execution cycle property triggering inaccessible with separate block service and revise corresponding Status Flag.
In above-mentioned situation, the administrative unit decision is the execution block service or carries out and separate block service that the aim of foundation is:
1) initiating block service only need satisfy and fault has taken place and received an artificial condition that one of bans use of in the order;
2) initiate to separate block service and need satisfy the passage fault-free simultaneously, and artificial two conditions of use that allow.
Use said method to have following function and effect:
1, the AAL2 passage that breaks down from the command of execution bans use of, in order to avoid traffic affecting calls, guarantees the success rate of service dispatching.
2, allow the AAL2 passage that can meet the demands in time come into operation, improve the service efficiency of AAL2 passage.
3, when just bringing into operation, network element device correctly selects available AAL2 passage.
Use this method in time the AAL2 resource that breaks down in the system to be peeled off away, avoided the service fail that takes place therefrom, and when conditions permit, in time recover its use.Do like this and can keep a rational availability for the AAL2 passage in time automatically, help the stable of system equipment.Comparatively speaking, in the prior art, it is low only by background manage software the AAL2 channel resource to be managed efficient by the plant maintenance personnel, can not in time handle it to the generation and the recovery of abnormal conditions.
Below in conjunction with accompanying drawing, the concrete enforcement of the method for the invention is described in further detail.For those skilled in the art that, from the description to the inventive method, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is for known obturation and separate the seclusion schematic diagram.
Fig. 2 is for allowing to use the Status Flag figure of AAL2 passage.
Fig. 3 is the triggering of being broken down by the AAL2 passage, the Status Flag figure after seclusion is finished.
Fig. 4 is recovered and manually allows to use the AAL2 passage to trigger by the AAL2 channel failure, separates the Status Flag figure after seclusion is finished.
Fig. 5 serves as reasons and manually bans use of the AAL2 passage to trigger the Status Flag figure after seclusion is finished.
Fig. 6 separates Status Flag figure before the seclusion for periodic triggers.
Fig. 7 is the Status Flag figure before the periodic triggers seclusion.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
In order to keep a rational availability for the AAL2 passage in time automatically, administrative unit needs to detect all AAL2 passages in real time whether fault has taken place, after detecting some AAL2 passages fault taken place, administrative unit just is arranged to malfunction to the malfunction sign of this AAL2 passage, and the triggering seclusion, both sides' network element just can not re-use this AAL2 passage that breaks down after seclusion was finished.Status Flag after seclusion is finished as shown in Figure 3.Recover from fault when detecting some AAL2 passages, administrative unit just is arranged to unfaulty conditions to the malfunction sign of this AAL2 passage, at this moment also to check artificial Status Flag, if artificial Status Flag is in the permission user mode, administrative unit just initiates to separate block service, separate this AAL2 passage of block service success back and be configured to local terminal in this locality and separate blocked state, be configured to far-end and separate blocked state on the other side's network element, both sides' network element just can reuse this AAL2 passage.Separate after seclusion is finished Status Flag as shown in Figure 4.
Administrative unit needs also that real-time receiving equipment attendant sends bans use of and allows the operational order used.When receiving the operational order that bans use of certain AAL2 passage, administrative unit just is arranged to ban use of state to the artificial Status Flag of this AAL2 passage, and the triggering seclusion, both sides' network element just can not re-use this forbidden AAL2 passage after seclusion was finished.Status Flag after seclusion is finished as shown in Figure 5.When receiving the operational order that allows to use certain AAL2 passage, administrative unit just is arranged to allow user mode to the artificial Status Flag of this AAL2 passage, at this moment also to check the malfunction sign, if the malfunction sign is in unfaulty conditions, administrative unit is just initiated to separate seclusion, and both sides' network element just can reuse this AAL2 passage.Separate after seclusion is finished Status Flag as shown in Figure 4.
Administrative unit is arranged to blocked state to the local terminal Status Flag of all AAL2 passages when equipment just brings into operation, if being in, artificial Status Flag allow user mode and malfunction sign to be in unfaulty conditions, just trigger and separate seclusion, if the other side's network element also agrees to use this AAL2 passage, then this locality can be received and be separated inaccessible response message, this AAL2 passage just can normally come into operation like this, if the other side's network element can't use this AAL2 passage, then this locality just can not receive and separates inaccessible response message, the local terminal Status Flag remains on blocked state, just can not use this AAL2 passage.So just can reach the purpose of when the device power initialization, correctly selecting available AAL2 passage.
Because it is inaccessible or separate seclusion and may come a howler for some reason, administrative unit also needs the Status Flag of all AAL2 passages is carried out the timing cycle verification, when the state of finding the AAL2 passage as shown in Figure 6, because artificial Status Flag and malfunction sign all are in normal state, inaccessible this AAL2 passage that has no reason at present is described, at this moment just need to initiate to separate seclusion, allow the network element both sides to use this AAL2 passage.If separate inaccessible failure, can when second periodicity detects down, initiate once more, agree to use this AAL2 passage up to the other side's network element.When the state of finding the AAL2 passage as shown in Figure 7 because artificial Status Flag or malfunction sign all are in abnormal state of affairs, illustrate needs inaccessible this AAL2 passage at present, forbids network element both sides use.
Trigger and the cycle checking procedure by fault triggering described above, manual activation, device power, AAL2 passage availability management unit can be initiated corresponding obturation or be separated seclusion, make great efforts to make each Status Flag interdigit of AAL2 passage to keep normal logical relation, reach the purpose of the AAL2 passage being carried out availability management.Because the far-end Status Flag is subjected to the other side's network element control, its Status Flag form is just no longer listed.
Though the present invention with preferred embodiment openly as above, the example of the visualization that this just lifts for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally; the ordinary skill of technical field all can be according to the description of technical scheme of the present invention and preferred embodiment thereof under any; make various possible being equal to and change or replacement, but all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (4)
1. the availability management method of AAL 2 service channels, it is characterized in that in radio network controller, increasing AAL 2 service channel availability management unit, except local terminal Status Flag and far-end Status Flag, above-mentioned administrative unit is provided with two Status Flags for each AAL 2 service channel again: malfunction sign and artificial Status Flag, and manage operation according to the logical relation between each Status Flag;
Wherein, above-mentioned malfunction sign comprises fault and fault-free two states, writes down each AAL 2 service channel whether fault has taken place; Above-mentioned artificial Status Flag comprises and bans use of and allow to use two states, whether writes down each AAL 2 service channel by artificial banning use of.
2. method according to claim 1, it is characterized in that allowing to use the Status Flag of above-mentioned AAL 2 service channels to be: artificial Status Flag uses for allowing, malfunction is masked as fault-free, and the local terminal Status Flag is for separating obturation, and the far-end Status Flag is for separating obturation.
3. method according to claim 1 is characterized in that the bookkeeping of above-mentioned administrative unit comprises following operation:
Operation 1, detect all AAL 2 service channels in real time whether the fault on the hardware and software has taken place, and the recovery situation of fault, take place to carry out corresponding fault according to fault and trigger obturation and separate block service and revise corresponding Status Flag with recovery situation;
Operation 2, receive the artificial operational order used of banning use of and allow in real time, carry out corresponding manual activation inaccessible with separate block service and revise corresponding Status Flag;
Operation 3, actuating equipment powers on to trigger and separates block service when equipment just brings into operation;
Operation 4, regularly detect all Status Flags of AAL 2 service channels, according to the logical relation between each Status Flag determine whether execution cycle property triggering inaccessible with separate block service and revise corresponding Status Flag.
4. method according to claim 3 is characterized in that above-mentioned administrative unit decision is the execution block service or carries out and separate block service that the aim of foundation is:
1) initiating block service only need satisfy and fault has taken place and received an artificial condition that one of bans use of in two conditions of order;
2) initiate to separate block service and need satisfy the passage fault-free simultaneously, and artificial two conditions of use that allow.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510064577XA CN100375446C (en) | 2005-04-15 | 2005-04-15 | Available management method for asynchronous transmission mode adaptive layer 2 business channel |
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| CNB200510064577XA CN100375446C (en) | 2005-04-15 | 2005-04-15 | Available management method for asynchronous transmission mode adaptive layer 2 business channel |
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| CN100375446C true CN100375446C (en) | 2008-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101267427A (en) * | 2007-03-12 | 2008-09-17 | 中兴通讯股份有限公司 | Interactive inquiry method for media channel status |
| CN101257438B (en) * | 2008-01-22 | 2010-07-14 | 中兴通讯股份有限公司 | Method for keeping consistence of channel occlusion state among nodes |
| CN101938753A (en) * | 2009-06-30 | 2011-01-05 | 上海贝尔股份有限公司 | Synchronization method for states of AAL2 paths and device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002098165A1 (en) * | 2001-06-01 | 2002-12-05 | Telefonaktiebolaget L M Ericsson (Publ) | Bandwidth efficient quality of service separation of aal2 traffic |
| CN1663193A (en) * | 2001-05-29 | 2005-08-31 | 汤姆森许可贸易公司 | Method for managing resources of a link in a communication network |
| WO2005094004A1 (en) * | 2004-03-04 | 2005-10-06 | Cisco Technology, Inc. | Methods and devices for high network availability |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1663193A (en) * | 2001-05-29 | 2005-08-31 | 汤姆森许可贸易公司 | Method for managing resources of a link in a communication network |
| WO2002098165A1 (en) * | 2001-06-01 | 2002-12-05 | Telefonaktiebolaget L M Ericsson (Publ) | Bandwidth efficient quality of service separation of aal2 traffic |
| WO2005094004A1 (en) * | 2004-03-04 | 2005-10-06 | Cisco Technology, Inc. | Methods and devices for high network availability |
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Effective date of registration: 20140917 Address after: 226600 No. 288 Changjiang West Road, Haian County, Nantong, Jiangsu Patentee after: HAIAN INSTITUTE OF HIGH-TECH RESEARCH, NANJING UNIVERSITY Address before: 518057 Nanshan District, Guangdong high tech Industrial Park, science and Technology Industrial Park, ZTE building, block A, layer 6, layer Patentee before: ZTE Corporation |
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