CN101321329B - Protection method for inside resource of global microwave access interoperability access network - Google Patents
Protection method for inside resource of global microwave access interoperability access network Download PDFInfo
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- CN101321329B CN101321329B CN2007101109196A CN200710110919A CN101321329B CN 101321329 B CN101321329 B CN 101321329B CN 2007101109196 A CN2007101109196 A CN 2007101109196A CN 200710110919 A CN200710110919 A CN 200710110919A CN 101321329 B CN101321329 B CN 101321329B
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Abstract
The invention discloses a protecting method of accessing the global microwave to an internal resource of an interoperable access network. The method includes the following steps: the access service gateway periodically sends the echo request including the access service gateway information to the base station by the predetermined sending period; and the access service gateway judges whether to receive the echo reply including the base station information from the base station in the sending period of the predetermined numbers, and processes the base station resources correspondingly according to the judgment result. According to the method, through connecting the base station with a plurality of access service gathering gateways, the link conditions with the access service gathering gateways can be judged out by the same system respectively, and the relative resources can be recovered, thus making full use of the resources.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to the inner network element aggregation gateway of a kind of World Interoperability for Microwave Access, WiMax access service network is protected the aggregation gateway resource through the peer node activity method.
Background technology
Network reference model such as Fig. 1 of WiMAX (World Interoperability for Microwave Access, WiMax, based on the wireless metropolitan area network technology of IEEE802.16 standard, wherein, World Interoperability for Microwave Access is called for short WiMAX).ASN wherein (Access ServiceNetwork, access service network are called for short ASN) is the set of the corresponding message flow of functional entity relevant with access service in the WiMAX network system.ASN inside again can be as shown in Figure 2.Wherein AGW (ASN GateWay, ASN aggregation gateway) and BS (BaseStation, base station) connect through internal interface R6 mouth, and wherein the R6 mouth is made up of a series of control and load plane agreement.
Load plane is made up of the related data channel protocol between BS and the AGW, and control plane is set up, revised and the release related protocol by the data channel of the mobile generation of MS/SS (Mobile Station/Subscriber Station, portable terminal).In the middle of this process, AGW need distribute corresponding channel resource and space resources for BS and MS/SS.The channel resource of AGW and space resources are a certain amount of, and are limited by the capacity of related hardware, so the channel resource of AGW and space resources need be fully utilized.
Generally, consider following a kind of abnormal conditions: the physical link between AGW and the BS breaks off, and AGW belongs to recyclable resource for channel resource and the space resources that this BS distributes can't be continued to use.Need wait until that to the recovery of this resource AGW expires for the protection of resources timer that this BS sets, AGW reclaims this BS related resource then.Because AGW and BS chain rupture, AGW is for the channel resource that all MS/SS distributed that this BS hangs down also can't be continued use with space resources, need wait until that AGW is the recovery respectively that expires of the protection of resources timer of these MS/SS settings.
This is wherein because the setting of protection of resources timer is long usually; So begin to expire to the protection timer of BS and following all MS/SS that hang of BS from AGW and BS chain rupture; Channel resource and space resources during this period of time callable resource occurred not by the situation of instant recovery, thereby have caused the waste of related resource.
Summary of the invention
Consider the problems referred to above and make the present invention, the object of the present invention is to provide a kind of a kind of way for this reason through node active protection WiMAX ASN internal resource.
To achieve these goals; According to one embodiment of present invention; A kind of guard method of inside resource of global microwave access interoperability access network is provided, and this method may further comprise the steps: Access Service Network Gateway periodically sends the response request that comprises Access Service Network Gateway information to the base station with the predetermined transmission cycle; And whether Access Service Network Gateway is judged in the transmission cycle of predetermined number receive from the response that comprises base station information of base station and reply, and according to judged result base station resource is carried out handled.
In addition, in the method, base station information comprises that IP address, base station system restart number of times and base station reboot time point.If Access Service Network Gateway is not received in the transmission cycle of predetermined number and is replied, then reclaims base station resource.If Access Service Network Gateway is received in the transmission cycle of predetermined number and replied, then the base station system in the base station information is restarted number of times and compare, and base station resource is carried out handled according to comparative result with the number of times of restarting that is write down.If base station system restart number of times and record to restart number of times consistent, then do not reclaim base station resource.If base station system restart number of times and record to restart number of times inconsistent, then according to base station reboot time point, reclaim base station resource.Wherein, sending the predetermined number in cycle is that number of attempt is judged in link failure.
In addition, in the method, base station resource comprises the channel resource and the space resources of base station and the following portable terminal of hanging thereof.Access Service Network Gateway information comprises Access Service Network Gateway control plane address and Access Service Network Gateway time stamp.And the Access Service Network Gateway time stamp is to stab Greenwich Mean Time.
Through technique scheme of the present invention; Main purpose of the present invention is AGW confirms BS to the answer EchoResponse message of EchoRequest through transmission EchoRequest and peer node BS a activity; Promptly find the link condition of AGW and all BS that hang down, concrete is, and link is normal, the BS node is restarted, the situation of link failure, link congestion.Here can further promote, if BS links to each other with a plurality of AGW, it just can be judged respectively and the link condition of AGW through identical mechanism so, reclaims relevant resource then, reaches resource is utilized fully.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the diagrammatic sketch of the WiMAX network reference model of prior art;
Fig. 2 is the exploded view of the ASN of prior art;
Fig. 3 shows the flow chart according to the guard method of the inside resource of global microwave access interoperability access network of the embodiment of the invention;
Fig. 4 is the diagrammatic sketch according to the discovery link normal condition of the embodiment of the invention;
Fig. 5 is the diagrammatic sketch of the situation of restarting according to the discovery node of the embodiment of the invention;
Fig. 6 is the diagrammatic sketch according to the situation of the discovery link failure of the embodiment of the invention;
Fig. 7 is the diagrammatic sketch according to the situation of the discovery link congestion of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
According to one embodiment of present invention; Fig. 3 shows a kind of guard method of inside resource of global microwave access interoperability access network; This method may further comprise the steps: step S302, and Access Service Network Gateway periodically sends the response request that comprises Access Service Network Gateway information to the base station with the predetermined transmission cycle; And step S304, whether Access Service Network Gateway is judged in the transmission cycle of predetermined number, is received from the response that comprises base station information of base station and reply, and according to judged result base station resource is carried out handled.
Wherein, base station information comprises that IP address, base station system restart number of times and base station reboot time point.
In the method, do not reply, then reclaim base station resource if Access Service Network Gateway was received in the transmission cycle of predetermined number.
In addition, reply, then the base station system in the base station information is restarted number of times and compare, and base station resource is carried out handled according to comparative result with the number of times of restarting that is write down if Access Service Network Gateway was received in the transmission cycle of predetermined number.
In addition, in the method, if base station system restart number of times and record to restart number of times consistent, then do not reclaim base station resource.If base station system restart number of times and record to restart number of times inconsistent, then according to base station reboot time point, reclaim base station resource.
Here, sending the predetermined number in cycle is that number of attempt is judged in link failure.Base station resource comprises the channel resource and the space resources of base station and the following portable terminal of hanging thereof.Access Service Network Gateway information comprises Access Service Network Gateway control plane address and Access Service Network Gateway time stamp.The Access Service Network Gateway time stamp is to stab Greenwich Mean Time.
AGW needs configuration link to lose efficacy judgement number of attempt, transmission cycle.Wherein link failure judges that number of attempt is exactly that AGW is used for judging whether the number of times of EchoRequest message is sent in the required trial of chain rupture with BS, and the transmission cycle is exactly the cycle that AGW sends EchoRequest message.Also need dispose IP (network interconnection agreement, Internet Protocol the are called for short IP) address of all BS of extension that AGW descends.According to the IP address of the BS that disposes, AGW sends related news.
Below, specify how the present invention finds that link is normal, node is restarted, the situation of link failure or link congestion.
According to one embodiment of present invention, Fig. 4 is the diagrammatic sketch according to the normal situation of discovery link of the embodiment of the invention.As shown in Figure 4, it may further comprise the steps:
Step S401 sends EchoRequest message through UDP or TCP host-host protocol to all BS that hang down during the AGW operate as normal.Need comprise in the EchoRequest message: AGW control plane address, AGW time stamp, wherein, the AGW time stamp is to stab Greenwich Mean Time;
Step S402; BS receives EchoRequest message; Reply EchoResponse message immediately through UDP or TCP host-host protocol; It is consistent with the last recorded times of AGW that number of times is restarted in the BS system in the EchoResponse message that this moment, BS replied, and thinks that so this BS node is in proper working order, and link is normal;
Repeat 401,402 step.
Fig. 5 is the diagrammatic sketch of the situation of restarting according to the discovery node of the embodiment of the invention.As shown in Figure 5, it may further comprise the steps:
Step S501 sends EchoRequest message through UDP or TCP host-host protocol to all BS that hang down during the AGW operate as normal.Need comprise in the EchoRequest message: AGW control plane address, AGW time stamp, wherein, the AGW time stamp is to stab Greenwich Mean Time;
Step S502; BS receives EchoRequest message; Reply EchoResponse message immediately through UDP or TCP host-host protocol; It is consistent with the last recorded times of AGW that number of times is restarted in the BS system in the EchoResponse message that this moment, BS replied, and thinks that so this BS node is in proper working order, and link is normal;
Step S503 is identical with step S501;
Step S504 is identical with step S502;
Here step S501, S502 can repeat repeatedly.Also can be only S501 in steps, do not have step S502.
Step S505; AGW receives the EchoResponse message that BS replys; If AGW finds that the number of times of restarting number of times and last registration in this message is inconsistent; Then AGW thinks that BS restarts, and according to scanning related channel program resource of the timestamp in the EchoResponse message and space resources, and the channel resource and the space resources of MS establishment before this time point of under this BS and this BS, hanging reclaimed.
Fig. 6 is the diagrammatic sketch according to the situation of the discovery link failure of the embodiment of the invention.As shown in Figure 6, it may further comprise the steps:
Step S601 sends EchoRequest message through UDP or TCP host-host protocol to all BS that hang down during the AGW operate as normal.Need comprise in the EchoRequest message: AGW control plane address, AGW time stamp, wherein, the AGW time stamp is to stab Greenwich Mean Time;
Step S602, in a transmission cycle, AGW does not receive the EchoResponse message that BS replys, number of attempt adds up.AGW continues to send EchoRequest message.And judge whether number of attempt arrives link failure and judge number of attempt;
Step S603 is identical with step S602, and the supposition link failure judges that number of attempt is 3 times among this figure, if promptly AGW sends 3 EchoRequest, BS never makes corresponding answer, so just thinks the BS node failure;
Step S604 is identical with step S602;
Step S605, AGW find that number of attempt has arrived link failure and judged number of attempt.AGW thinks and the link chain rupture of this BS; Think this node failure; And through finding the time point scanning related channel program resource and the space resources of this node failure, channel resource and space resources that the MS that under this BS and this BS, hangs was created before this time point reclaim.
Fig. 7 is the diagrammatic sketch according to the situation of the discovery link congestion of further embodiment of this invention.As shown in Figure 7, it may further comprise the steps:
Step S701 sends EchoRequest message through UDP or TCP host-host protocol to all BS that hang down during the AGW operate as normal.Need comprise in the EchoRequest message: AGW control plane address, AGW time stamp, wherein, the AGW time stamp is to stab Greenwich Mean Time;
Step S702, in a transmission cycle, AGW does not receive the EchoResponse message that BS replys, number of attempt adds up.AGW continues to send EchoRequest message.And judge whether number of attempt arrives link failure and judge number of attempt;
Step S703 is identical with step S702, and the supposition link failure judges that number of attempt is 3 times among this figure, if promptly AGW sends 3 EchoRequest, BS never makes corresponding answer, so just thinks the BS node failure;
Step S704, BS sends EchoResponse message in the transmission cycle before number of attempt is judged in link failure, and S402 is identical with step.
Step S705, AGW receives EchoResponse, finds not arrive link failure and judges number of attempt, thinks that the accidental congested institute of link causes, to the number of attempt clear 0 that has added up.
In sum, adopt the inventive method, convergence network element AGW can be through discovery of Echo mechanism and the link condition of hanging BS down.If finding link failure or node restarts and can reclaim channel resource and space resources according to timestamp.Through active judgement can reach the purpose to the protection of resource to node.This mechanism is adapted on other convergence network element equally.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the guard method of an inside resource of global microwave access interoperability access network is characterized in that, may further comprise the steps:
Access Service Network Gateway periodically sends the response request that comprises Access Service Network Gateway information to the base station with the predetermined transmission cycle; And
Said Access Service Network Gateway was judged in the transmission cycle of predetermined number; Whether receive from the response that comprises base station information of base station and reply; And base station resource is carried out handled according to judged result; Wherein, if said Access Service Network Gateway does not receive that in the transmission cycle of predetermined number said response replys, then reclaim said base station resource.
2. guard method according to claim 1 is characterized in that, said base station information comprises that IP address, base station system restart number of times and base station reboot time point.
3. guard method according to claim 2; It is characterized in that; If said Access Service Network Gateway receives that in the transmission cycle of predetermined number said response replys; Then the said base station system in the said base station information is restarted number of times and compare, and said base station resource is carried out handled according to comparative result with the number of times of restarting that is write down.
4. guard method according to claim 3 is characterized in that, if said base station system restart number of times and said record to restart number of times consistent, then do not reclaim said base station resource.
5. guard method according to claim 3 is characterized in that, if said base station system restart number of times and said record to restart number of times inconsistent, then, reclaim said base station resource according to said base station reboot time point.
6. require each described guard method according to aforesaid right, it is characterized in that, the predetermined number in said transmission cycle is that number of attempt is judged in link failure.
7. guard method according to claim 6 is characterized in that, said base station resource comprises the channel resource and the space resources of said base station and the following portable terminal of hanging thereof.
8. guard method according to claim 7 is characterized in that, said Access Service Network Gateway information comprises Access Service Network Gateway control plane address and Access Service Network Gateway time stamp.
9. guard method according to claim 8 is characterized in that, said Access Service Network Gateway time stamp is to stab Greenwich Mean Time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101109196A CN101321329B (en) | 2007-06-08 | 2007-06-08 | Protection method for inside resource of global microwave access interoperability access network |
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| CN2007101109196A CN101321329B (en) | 2007-06-08 | 2007-06-08 | Protection method for inside resource of global microwave access interoperability access network |
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| CN101321329A CN101321329A (en) | 2008-12-10 |
| CN101321329B true CN101321329B (en) | 2012-05-23 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1863076A (en) * | 2005-09-23 | 2006-11-15 | 华为技术有限公司 | WiMax system and method of implementing reset processing thereof |
| CN1953606A (en) * | 2005-10-19 | 2007-04-25 | 华为技术有限公司 | A method for mobile subscriber device to register mobile Internet protocol |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1863076A (en) * | 2005-09-23 | 2006-11-15 | 华为技术有限公司 | WiMax system and method of implementing reset processing thereof |
| CN1953606A (en) * | 2005-10-19 | 2007-04-25 | 华为技术有限公司 | A method for mobile subscriber device to register mobile Internet protocol |
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| CN101321329A (en) | 2008-12-10 |
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