CN100536601C - Method for releasing resources in microwave access global internet - Google Patents

Method for releasing resources in microwave access global internet Download PDF

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Publication number
CN100536601C
CN100536601C CNB2006100675572A CN200610067557A CN100536601C CN 100536601 C CN100536601 C CN 100536601C CN B2006100675572 A CNB2006100675572 A CN B2006100675572A CN 200610067557 A CN200610067557 A CN 200610067557A CN 100536601 C CN100536601 C CN 100536601C
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China
Prior art keywords
network
anchor point
travelling carriage
deviated
notice
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Expired - Fee Related
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CNB2006100675572A
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Chinese (zh)
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CN101039515A (en
Inventor
周明
庄宏成
曾可
张洁涛
肖蛰水
杜汉美
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CNB2006100675572A priority Critical patent/CN100536601C/en
Priority to PCT/CN2007/000729 priority patent/WO2007107080A1/en
Publication of CN101039515A publication Critical patent/CN101039515A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Abstract

The present invention relates to a wireless communications technology, and discloses a method of accessing a microwave to the global Internet network to release the resources and a system thereof, making the anchor certification timely release the relevant resources when the mobile station leaves the network. In the present invention, the anchor PC/LR detects the state of the mobile station, if it is found that the mobile station has left the network, then notify the anchor certification; a notice can carry one or more logoes of the mobile station left the network, and the anchor certification deletes the safety information of the corresponding under station based on these logoes. The system resources can be timely released by deleting these safety messages, accordingly improving the utilization rate of the system resources. The anchor PC/LR notices the anchor certification to use the additional information or also use the expanded existing information when the mobile station left the network.

Description

Discharge the method and the system thereof of resource in the microwave access global intercommunication network
Technical field
The present invention relates to wireless communication technology, particularly the micro-wave access to global intercommunication technology.
Background technology
Along with the growth of development of Communication Technique and user's request, data service has obtained developing rapidly, and the increasing rapidly of data business volume makes people grow to even greater heights to the demand of communication bandwidth, and broadband access shows a huge market to industrial circle.For breaking through the bandwidth bottleneck of Access Network, people have released multiple broadband access technology.
With line access mode arranged compare, adopt broadband wireless access (the BroadbandWireless Access of wireless access way, abbreviation " BWA ") technology has flexibly, convenient, remarkable advantages such as mobility and small investment, with 3G (Third Generation) Moblie (The Third Generation, be called for short " 3G "), wideband wireless local area network (Wireless Local Area Network, be called for short " WLAN ") and broadband wireless MAN (Wireless Metropolitan Area Network, abbreviation " WMAN ") obtained development at full speed in recent years for the BWA technology of representative.
Micro-wave access to global intercommunication (Worldwide Interoperability for Microwave Access is called for short " WiMAX ") is exactly a kind of wireless metropolitan area network technology, enjoys the concern of all big enterprises and research institution as the research focus in WMAN field, broadband.WiMAX is present industry to based on (the Institute of Electrical and Electronics Engineers of Institute of Electrical and Electronics Engineers, abbreviation " IEEE ") address sanctified by usage of the wireless metropolitan area network technology of 802.16 series standards, its elementary object provides a kind of under some multivendor environment to multiple spot of metropolitan area network, effectively the broadband wireless access means of interoperability.WiMAX can provide broadband wireless to connect to equipment fixing or that move, also can be used to connect focus and the internet of WLAN, provide the campus to connect, and in " last kilometer " broadband access field as Digital Subscriber Line (Digital Subscriber Line, be called for short " DSL ") wait the wireless substitute of cable broadband access, its network reference model is as shown in Figure 1.
The WiMAX system adopts cellular technology, and being transmitted between base station (BaseStation is called for short " BS ") and several subordinate's subscriber stations (Subscriber Station is called for short " SS ") of its air interface data carried out, and carries out centralized control by the base station.Wherein, BS and metropolitan area network, public switched telephone network (PublicSwitched Telephone Network, be called for short " PSTN ") link to each other, a SS can insert one or more terminal use, and converge these users' internetworking agreement (Internet Protocol, abbreviation " IP ") data, speech business flow are sent to BS by air interface.
WiMAX has long transmission distance, transmission rate advantages of higher.The transmission of wireless signals of BS distance can reach 50 kilometers farthest among the WiMAX, and area coverage is 10 times of NodeB, and the covering in big zone just can be provided by the construction of less BS; WiMAX adopts OFDM (Orthogonal Frequency Division Multiplexing is called for short " OFDM ") modulation system simultaneously, can effectively utilize channel resource, and the transmission rate up to 70 MBPSs (Mbps) can be provided.
In order to have saved travelling carriage (Mobile Station is called for short " MS ") power and interface-free resources, in IEEE 802.16e standard, defined idle pulley (IDLE), the IDLE pattern is a kind of terminal work mode in the mobile wide-band wire-less accessing system.The MS that is under the IDLE pattern can move in a very big zone, and MS needn't register to the base station (BaseStation is called for short " BS ") in the sub-district of roaming when roaming in this zone.Simultaneously, when MS roams into different districts, the normal running flow process such as needn't switch.MS can enter the IDLE pattern by sending message request.Similarly, BS also can initiatively require MS to enter the IDLE pattern by sending message.No matter be that MS initiatively initiates to ask to enter the IDLE pattern, or BS initiatively requires MS to enter the IDLE pattern by sending message, MS will finish the process of registering, entering the IDLE pattern in official hour.
Existing WiMAX system comprises access service network gateway (Access Service NetworkGateWay, abbreviation " ASN GW "), paging controller (Paging Controller, abbreviation " PC "), location register network entities such as (Location Register are called for short " LR ").Wherein, PC is used for activity and the paging of the MS under the supervising the network IDLE pattern, for the MS under each IDLE pattern, only there is a PC to manage its activity, is called anchor point PC, but one or more PC are arranged, be called relay PC, be used for relaying MS to the message between the anchor point PC.A part of logic function that PC can be used as the logic entity authenticator realizes in same physical NE.Its physical location may be arranged in the WiMAX system physical NE ASN GW, also may be arranged in another independently physical NE.LR is a distributed database, be used to preserve MS state information, paging information and service flow relevant information.In general, the corresponding LR logic entity of PC logic entity meeting, and two logic entities are realized in same physical NE.Same in ASN, also have paging agent (Paging Agent is called for short " PA "), be used for handling the PC function executing relevant with paging with BS alternately.
As required, usually network is divided into several paging groups (Paging Group is called for short " PG "), a PG is made of one or more PA, and is managed by network operator.A PG must reside within the Network Access Provider scope of (Network Access Provider is called for short " NAP ").And a BS and relevant PA can be the entities among a plurality of PG, as shown in Figure 2.
As travelling carriage (Mobile Station, being called for short " MS ") active request enters the IDLE pattern on certain BS, when perhaps certain BS instruct MS enters the IDLE pattern, by MS and this BS, and the interacting message between this BS and the rear end network element ASN GW, this MS of notice PC has entered the IDLE pattern, and preserves state information, paging information and the service stream information of this MS in the LR of correspondence.MS can carry information that need to ask reservation when it enters the IDLE pattern in issuing the IDLE mode request message of this BS, this BS also can be provided with similar information in IDLE mode request response message, be used for notifying the relevant information of MS, and the ID of PC is notified to this MS in that LR kept.
When MS enters the IDLE pattern, some security information that still can keep this MS on the anchor point authenticator of MS (Anchor Authenticator), these information can be used for that the MS under the IDLE pattern is carried out home to be upgraded, and home upgrades, and helps that MS is faster to be recovered under the IDLE pattern.Under the IDLE pattern, MS needs periodically to initiate the position updating request idle message to the BS at current place, and its cycle is determined by a system timer.BS receives the location update message that sends back-end network after this message according to the ID of PC in the message to corresponding PC.PC judges according to this message whether this MS enters new PG, if then upgrade the corresponding information among the LR.
The idle timer of system on PC/LR surpasses maximum time, but PC/LR thinks that then this MS has lost when still not receiving the location updating message of MS.Another kind of situation is, external agent (Foreign Agent as this MS, be called for short " FA ") receive the forward data bag of this MS, be that network side is need send to the packet of MS the time, FA can notify PC/LR to carry out paging, when PC/LR has attempted predefined maximum paging number of times but still do not received the response of MS, think equally that then this MS loses.In addition, MS can send a distance measurement request message (RNG-REQ) to BS when shutdown, wherein comprises the shutdown indication IE of MS.
When PC/LR thinks that MS has left network, comprise that MS loses or the MS shutdown, PC/LR all can discharge all about the IDLE pattern of this MS and keep information, with free system resources.
In actual applications, there is following problem in such scheme: in the WiMAX system, there is the wasting of resources during paging in MS under the IDLE pattern.
Cause the main cause of this situation to be, when MS enters the IDLE pattern, some security information that still can keep this MS on the anchor point authenticator of MS, when MS has left network, comprise that MS loses or the MS shutdown, this anchor point authenticator does not also know that this MS has left network, is still keeping the security related information of this MS, forms a kind of wasting of resources undoubtedly.
Summary of the invention
In view of this, main purpose of the present invention is to provide method and the system thereof that discharges resource in a kind of microwave access global intercommunication network, makes the anchor point authenticator can in time discharge relevant resource when the travelling carriage deviated from network.
For achieving the above object, the invention provides the method that discharges resource in a kind of microwave access global intercommunication network, comprise following steps:
If the travelling carriage that anchor point paging controller and location register detect under the idle condition has left network, then notify the anchor point authenticator, carry the sign of the travelling carriage of at least one deviated from network in this notice;
Described anchor point authenticator is received the security information that corresponding travelling carriage is deleted according to sign wherein in described notice back.
In this external described method, comprise the reason of described travelling carriage deviated from network in the described notice.
In this external described method, the reason of described travelling carriage deviated from network comprises that travelling carriage is lost with travelling carriage and shuts down.
In this external described method, also comprise following steps:
After described anchor point authenticator is received described notice, return response message to described anchor point paging controller and location register, described response message comprises the mobile station identification of deviated from network.
In this external described method, described anchor point paging controller and location register notify described anchor point authenticator travelling carriage to leave network by specific messages;
Described anchor point authenticator responds the notice of described anchor point paging controller and location register by specific messages.
In this external described method, described anchor point paging controller and location register have left network by the described anchor point authenticator of the existing message informing travelling carriage through expansion;
Described anchor point authenticator is by the described anchor point paging controller of existing message response through expanding and the notice of location register;
Wherein, at the information element that in the existing message of expansion, comprises the mobile station identification that is used to indicate deviated from network;
Described existing message through expansion comprises " MS_Info_Request " message and " MS_Info_Response " message.
In this external described method, described anchor point paging controller and location register send to described anchor point authenticator with the notice of travelling carriage deviated from network directly or indirectly.
In this external described method, described anchor point paging controller and location register send one of in the following manner the notice of travelling carriage deviated from network indirectly:
Described anchor point paging controller and location register are by the forwarding of at least one other network entity, and the notice with the travelling carriage deviated from network sends to described anchor point authenticator indirectly;
Described anchor point paging controller and location register send to other network entity with the notice of travelling carriage deviated from network, this network entity produces new message and sends to described anchor point authenticator directly or indirectly, and this message has the information of indication travelling carriage deviated from network.
The present invention also provides the system that discharges resource in a kind of microwave access global intercommunication network, comprises anchor point paging controller and location register, and the anchor point authenticator, wherein,
Described anchor point paging controller and location register are used to unite the detection that realizes mobile station state, if the travelling carriage that detects under the idle condition has left network, then notify the anchor point authenticator, carry the sign of the travelling carriage of at least one deviated from network in this notice;
Described anchor point authenticator is used for the authentication of travelling carriage, and is receiving the security information of deleting corresponding travelling carriage according to sign wherein from the described notice back of described anchor point paging controller and location register.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, anchor point PC/LR detects the state of travelling carriage, if find that travelling carriage has left network, then notify the anchor point authenticator, the sign of the travelling carriage of the one or more deviated from network of portability in notice, the anchor point authenticator is according to the security information of the corresponding travelling carriage of these sign deletions.These security information are useless when travelling carriage leaves, and by deleting these security information free system resources in time, improved usage factor of system resource.
During anchor point PC/LR notice anchor point authenticator travelling carriage deviated from network, can use newly-increased message, also can use existing message, as MS_Info_Request message and MS_Info_Response message etc. through expansion.
Description of drawings
Fig. 1 is a WiMAX network reference model schematic diagram in the prior art;
Fig. 2 is a schematic diagram of dividing PG in the prior art;
Fig. 3 is the system construction drawing that discharges resource among the first embodiment of the invention WiMAX;
Fig. 4 is the method flow diagram that discharges resource among the first embodiment of the invention WiMAX;
Fig. 5 is the method flow diagram that discharges resource among the second embodiment of the invention WiMAX;
Fig. 6 is the method flow diagram that discharges resource among the four embodiment of the invention WiMAX.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Core of the present invention is, anchor point PC/LR detects the MS deviated from network whether under the idle condition, the reason that MS leaves can be that MS loses or MS shutdown etc., left network if detect MS, then notify the anchor point authenticator, carry the sign of the MS of at least one deviated from network in the notice, and the reason of this MS deviated from network; The anchor point authenticator is received the security information that corresponding MS is deleted according to the sign of MS wherein in this notice back, and returns response message to anchor point PC/LR, comprises the MS sign of deviated from network in the response message equally.
According to inventive principle the system and method that discharges resource among the first embodiment of the invention WiMAX is described below.
As shown in Figure 3, the system that discharges resource among the WiMAX comprises anchor point PC/LR, and the anchor point authenticator, and wherein, anchor point PC/LR is used to detect the state of MS, and when having detected the MS deviated from network, notice anchor point authenticator.The anchor point authenticator is used for the authentication of MS, and deletes the security information of the MS of deviated from network after receiving from the notice of anchor point PC/LR.
Specifically, anchor point PC/LR detects the state of MS, if detected MS deviated from network, then sends a piece of news to the anchor point authenticator, and notice anchor point authenticator has the MS deviated from network, and the sign of one or more MS of deviated from network.After the anchor point authenticator receives message from anchor point PC/LR, according to the corresponding security information of the MS of deviated from network of sign deletion of MS wherein.
More than the system of first embodiment of the invention has been carried out simple declaration, below the method that discharges resource among the present embodiment WiMAX is described in detail.
As shown in Figure 4, in step 410, anchor point PC/LR detects the current state of MS under the idle condition.
Then enter step 420, anchor point PC/LR judges currently whether have MS to leave network according to testing result, and the reason of MS deviated from network can be that MS loses, or the MS shutdown etc.If there is MS to leave network, then enter step 430, otherwise, then get back to step 410, continue to detect the current state of MS.
In step 430, anchor point PC/LR sends " MS_Exit_Indication " message to the anchor point authenticator, and notice anchor point authenticator has the MS deviated from network.Wherein, " MS_Exit_Indication " message-specific has the MS deviated from network in notice anchor point authenticator, comprises the sign of the MS of at least one deviated from network in this message, and this sign can be the MAC Address of MS, in order to MS of unique identification; The reason that can also comprise the MS deviated from network in this message is lost or MS shutdown etc. as MS, and is specifically as shown in table 1.
Information element Describe Pressure or optional Note
MS ID The MAC Address of MS Force The MS of a deviated from network of unique identification
Reason The reason of this MS deviated from network is as MS shutdown etc. Optional
The out of Memory element ...
Table 1
Then enter step 440, the anchor point authenticator receives the message from anchor point PC/LR, and according to the sign of the MS in the message, the security information of deleting corresponding MS.These security information are useless when MS leaves, and by deleting these security information free system resources in time, improved usage factor of system resource.
Then enter step 450, the anchor point authenticator returns response message " MS_Exit_Response " to anchor point PC/LR, comprises the sign of the MS of deviated from network in this message equally.
The method that discharges resource among the second embodiment of the invention WiMAX as shown in Figure 5, step 510 and step 520 do not repeat them here corresponding to step 410 and step 420.
By step 510 and step 520, anchor point PC/LR has detected MS and has left network, and in step 530, anchor point PC/LR sends " MS_Info_Request " message of process expansion to the anchor point authenticator, and then notifies anchor point authenticator deviated from network MS.Wherein, except original element, also newly added an information element in " MS_Info_Request " message, i.e. " MS_Exit_Indicator ", in order to the sign of MS of indication deviated from network, specifically as shown in table 2.
Information element Describe Pressure or optional Note
MS ID The MS MAC Address Force Be used to specify the MS that receives message
BS ID Base Station Identification Force Being used for instruct MS registers
The base station
Anchor point authenticator ID Anchor point authenticator sign Optional Anchor point authenticator sign
MS_Exit_Indicator Sign MS deviated from network Optional
Table 2
Then enter step 540, the anchor point authenticator is deleted the security information of the MS of deviated from network according to " MS_Exit_Indicator " element in the message that receives.
Then enter step 550, the anchor point authenticator sends " MS_Info_Response " message and gives anchor point PC/LR with the response as " MS_Info_Request " message.Equally, in " MS_Info_Response " message, except original element, also newly added an information element, i.e. " MS_Exit_Response ", in order to the MS sign of indication deviated from network, specifically as shown in table 3 equally.
Information element Describe Pressure or optional Note
MS ID The MS MAC Address Force Be used to specify the MS that receives message
BS ID Base Station Identification Force Be used for the base station that instruct MS is registered
Anchor point authenticator ID Anchor point authenticator sign Optional Anchor point authenticator sign
AK Authorized key Optional
The AK context The context of authorized key Force
MS_Exit_Response Sign MS deviated from network Optional
Table 3
The present embodiment and first execution mode are roughly the same, its difference only is the information element of first execution mode by the MS sign of newly-increased specific message transfer indication deviated from network, and present embodiment is by expanding existing " MS_Info_Request " and " MS_Info_Response " message, increase " MS_Exit_Indicator " and " MS_Exit_Response " element respectively therein newly, by the MS sign of these two elements indication deviated from network.
The method and first execution mode that discharge resource among the third embodiment of the invention WiMAX are roughly the same, its difference only is in the first embodiment, anchor point PC/LR directly sends to the anchor point authenticator with the notice of MS deviated from network, and in the present embodiment, anchor point PC/LR transmits by one or more other network entities, and the notice with the MS deviated from network sends to the anchor point authenticator indirectly.Such as anchor point PC/LR only notifies the FA of certain MS, and this MS is deviated from network, transfers the message that this MS of notice anchor point authenticator leaves by this FA.
The method and the 3rd execution mode that discharge resource among the four embodiment of the invention WiMAX are roughly the same, its difference only is in the 3rd execution mode, and anchor point PC/LR is notified to the anchor point authenticator by what one or more other network entities were transmitted the MS deviated from network pellucidly.And in the present embodiment, anchor point PC/LR sends to one or more other network entities with the notice of MS deviated from network, other network entity receives that this notice back produces new notice (also containing the indication of MS deviated from network), directly or indirectly sends to the anchor point authenticator.Specifically, as shown in Figure 6:
(reason may be that MS shutdown or paging failure or position are upgraded overtime) sends message MS_Info_Request to FA after the prosper MS of PC/LR has left network, and message can also be newly-increased message MS_Exit_Indication here, or other message.After FA receives the message that MS leaves, FA sends R3 Session Release Request (the R3 session discharges request) message and gives the anchor point authenticator, indicate one or more MS deviated from network, the anchor point authenticator sends R3Session ReleaseResponse message to FA after receiving this message, and FA sends MS_Info_Response message to PC/LR.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (9)

1. discharge the method for resource in the microwave access global intercommunication network, it is characterized in that, comprise following steps:
If the travelling carriage that anchor point paging controller and location register detect under the idle condition has left network, then notify the anchor point authenticator, carry the sign of the travelling carriage of at least one deviated from network in this notice;
Described anchor point authenticator is received the security information that corresponding travelling carriage is deleted according to sign wherein in described notice back.
2. discharge the method for resource in the microwave access global intercommunication network according to claim 1, it is characterized in that, comprise the reason of described travelling carriage deviated from network in the described notice.
3. discharge the method for resource in the microwave access global intercommunication network according to claim 2, it is characterized in that, the reason of described travelling carriage deviated from network comprises that travelling carriage is lost with travelling carriage and shuts down.
4. discharge the method for resource in the microwave access global intercommunication network according to claim 1, it is characterized in that, also comprise following steps:
After described anchor point authenticator is received described notice, return response message to described anchor point paging controller and location register, described response message comprises the mobile station identification of deviated from network.
5. discharge the method for resource in the microwave access global intercommunication network according to claim 4, it is characterized in that described anchor point paging controller and location register notify described anchor point authenticator travelling carriage to leave network by specific messages;
Described anchor point authenticator responds the notice of described anchor point paging controller and location register by specific messages.
6. discharge the method for resource in the microwave access global intercommunication network according to claim 4, it is characterized in that, described anchor point paging controller and location register have left network by the described anchor point authenticator of the existing message informing travelling carriage through expansion;
Described anchor point authenticator is by the described anchor point paging controller of existing message response through expanding and the notice of location register;
Wherein, at the information element that in the existing message of expansion, comprises the mobile station identification that is used to indicate deviated from network;
Described existing message through expansion comprises " MS_Info_Request " message and " MS_Info_Response " message.
7. according to the method that discharges resource in each described microwave access global intercommunication network in the claim 1 to 6, it is characterized in that described anchor point paging controller and location register send to described anchor point authenticator with the notice of travelling carriage deviated from network directly or indirectly.
8. discharge the method for resource in the microwave access global intercommunication network according to claim 7, it is characterized in that, described anchor point paging controller and location register send one of in the following manner the notice of travelling carriage deviated from network indirectly:
Described anchor point paging controller and location register are by the forwarding of at least one other network entity, and the notice with the travelling carriage deviated from network sends to described anchor point authenticator indirectly;
Described anchor point paging controller and location register send to other network entity with the notice of travelling carriage deviated from network, this network entity produces new message and sends to described anchor point authenticator directly or indirectly, and this message has the information of indication travelling carriage deviated from network.
9. discharge the system of resource in the microwave access global intercommunication network, it is characterized in that, comprise anchor point paging controller and location register, and the anchor point authenticator, wherein,
Described anchor point paging controller and location register are used to unite the detection that realizes mobile station state, if the travelling carriage that detects under the idle condition has left network, then notify the anchor point authenticator, carry the sign of the travelling carriage of at least one deviated from network in this notice;
Described anchor point authenticator is used for the authentication of travelling carriage, and is receiving the security information of deleting corresponding travelling carriage according to sign wherein from the described notice back of described anchor point paging controller and location register.
CNB2006100675572A 2006-03-17 2006-03-17 Method for releasing resources in microwave access global internet Expired - Fee Related CN100536601C (en)

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PCT/CN2007/000729 WO2007107080A1 (en) 2006-03-17 2007-03-07 A method, system and device for releasing resource in the worldwide interoperability for microwave access network

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