CN102883463A - Resource releasing method, device and system - Google Patents
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- CN102883463A CN102883463A CN2011101983656A CN201110198365A CN102883463A CN 102883463 A CN102883463 A CN 102883463A CN 2011101983656 A CN2011101983656 A CN 2011101983656A CN 201110198365 A CN201110198365 A CN 201110198365A CN 102883463 A CN102883463 A CN 102883463A
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Abstract
The invention discloses a resource releasing method, which comprises the following steps that: a relay node (RN) receives a restarting message which is sent by a donor eNodeB (DeNB) and is used for indicating a mobility management entity (MME) to restart; and the RN releases resources relevant to the restarted MME according to the restarting message. The invention also discloses the RN and a resource releasing system; the problem that unavailable resources cannot be timely released by the RN after the MME is restarted is solved; resource waste can be effectively avoided; resources can be effectively used; and the operation of a network is facilitated.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method for releasing resource and device, system.
Background technology
In order to keep 3-G (Generation Three mobile communication system) in the competitiveness of the communications field, third generation partner program (3GPP, 3rd Generation Partnership Project) the standard operation group just is being devoted to the research of evolution grouping domain system (EPS, Evolved Packet System).Fig. 1 is the system construction drawing of evolution packet network, as shown in Figure 1, the EPS system mainly comprises the universal terrestrial access network (E-UTRAN of evolution, Evolved Universal Terrestrial Radio Access Network) and packet-based core networks (EPC, Evolved Packet Core) two parts of evolution.The EPC of this system can support the user from GSM EDGE wireless access network (GERAN, GSM EDGE radio access network) and the access of universal land radio access web (UTRAN, Universal Terrestrial Radio Access Network).
As shown in Figure 1, EPC has comprised home subscriber data server (HSS, Home Subscriber Server), mobility management unit (MME, Mobility Management Entity), gateway (SGW, Serving Gateway), grouped data network gateway (PGW, PDN Gateway), Serving GPRS Support Node (SGSN, Serving GPRS Support Node) and the strategy and charging regulation function entity (PCRF, Policy and Charging Enforcement Function), wherein:
HSS is the permanent storage place of user contracting data, is positioned at the home network that the user contracts;
MME be user contracting data at the storage place of current network, be responsible for non-access (NAS, Non-Access Stratum) layer signaling management of terminal to network, tracking and paging management function and the bearer management under user's idle pulley;
SGW is the gateway that core net arrives wireless system, is responsible for terminal to the user plane bearer of core net, the data buffer storage under the terminal idle pulley, the function of network side initiating business request, legal eavesdropping and packet routing and forwarding capability;
PGW is the functions such as the grouping domain system of evolution and the gateway of this system's external network, the IP address assignment of responsible terminal, billing function, grouping packet filtering, application of policies;
SGSN is the business support point that GERAN and UTRAN user access EPC, and is similar with MME on the function, is responsible for user's position renewal, paging management and bearer management etc.;
PCRF is responsible for providing policy control and charging regulation to PCEF.
Under some scenes, in order to enlarge the wireless ability that access user is provided of wireless coverage or provisional increase, introduced the concept of relaying (Relay) node.Fig. 2 is for introducing the network architecture schematic diagram after the Relay, as shown in Figure 2, introduced via node after, UE can carry out network insertion by via node, wherein:
Via node (RN, Relay Node) has two parts function of UE and relaying, and RN can be used as the UE access network on the one hand, sets up the associative operations such as carrying, and RN can be used as eNodeB on the other hand, for UE provides access.
Donor base station (DeNB, Donor eNodeB) provides wireless access for RN, the Radio Resource that has terminated between RN and the UE is controlled (RRC, Radio Resource Contro1) signaling, terminated S1 Application Protocol (S1AP) signaling and X2 signaling between RN and the eNodeB, simultaneously built-in be SGW and the PGW function that RN and UE serve.
Wherein, RN needs to have corresponding enhancing function for RN provides the MME of service and eNodeB during as the UE access network, needs therefore to guarantee that RN can choose eNodeB and the MME of enhancing.
In real network is used, MME may be because system be unstable or upgrading causes restarting, when restarting appears in MME, MME can notify connected eNodeB, so that eNodeB is releasing resource in time, detailed process as shown in Figure 3, MME sends to the eNodeB that is connected with self restarts notice, eNodeB receives the described notice of restarting, and releasing resource also returns to described MME and to restart push-notification-answer.After in network, introducing RN and DeNB, because RN is connected with MME by DeNB, when MME is restarted, MME can only notify DeNB self to restart, DeNB can be according to the timely releasing resource of the notice of MME, but because RN can not know in time that MME has occured to restart, cause RN after MME is restarted, can not in time discharge disabled resource, cause the waste of resource and affect the operation of network.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method for releasing resource and device, system so that RN can be after MME be restarted timely releasing resource.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method for releasing resource, described method comprises:
Via node (RN) receives that donor base station (DeNB) sends is used to indicate the message of restarting that mobility management unit (MME) restarts;
Described RN is restarted message according to described, discharges the resource relevant with restarting MME.
In such scheme, describedly restart message and carry the identification information of restarting to some extent MME;
Described RN is restarted message according to described, discharges the resource relevant with restarting MME, comprising:
Described RN is restarted the identification information of restarting MME in the message according to described, judge whether MME is restarted in institute is for the MME that manages self, and restart MME judging when being used for managing the MME of self, discharge the resource of all subscriber equipmenies (UE) of self serving;
And/or described RN is restarted the identification information of restarting MME in the message according to described, judges that institute restarts each UE whether MME serve with self and be associated, and when judgement has UE to be associated with restarting MME, be associated with the restarting MME resource of UE of release.
In such scheme, the identification information of described MME is global unique MME sign (GUMMEI) of MME.
In such scheme, described RN is restarted the identification information of restarting MME in the message according to described, judge whether MME is restarted in institute is for the MME that manages self, comprise: described RN with described restart the identification information of restarting MME in the message, with the identification information of the MME that is used for management self relatively, if consistent, judge that then institute restarts MME for being used for managing the MME of described RN self, if inconsistent, then judgement to restart MME be not be used to the MME that manages described RN self.
In such scheme, described RN is restarted the identification information of restarting MME in the message according to described, each UE whether MME that judgement is restarted serves with self is associated, comprise: described RN is restarted the identification information of restarting MME in the message with described, identification information with the MME that is used for management self each UE that serves compares respectively, if there is the identification information of MME corresponding to UE consistent with the identification information of restarting MME, judge that then institute restarts MME and be associated with described UE, otherwise, each UE that MME that judgement is restarted serves with self is not related, can not carry out the resource release movement.
In such scheme, described RN discharges the resource of all subscriber equipmenies (UE) of self serving or discharges the resource of the UE that is associated with restarting MME, comprising:
Described RN sends the RRC release message to described UE, after described UE receives described RRC release message, discharges self shared resource, and returns RRC release acknowledge message to described RN.
In such scheme, described method also comprises:
Described RN is that described RN accesses after the resource of release self all UE that serve again when being used for the MME of management self according to the MME that identification information judgment is restarted of restarting MME.
In such scheme, described method also comprises:
Receive that described DeNB sends restart message after, described RN returns restart ack message to described DeNB.
The present invention also provides a kind of RN, and described RN comprises: receiving element and releasing unit, wherein,
Receiving element, what be used for to receive that DeNB sends is used to indicate the message of restarting that MME restarts;
Releasing unit, the message of restarting for receiving according to described receiving element discharges the resource relevant with restarting MME.
In such scheme, describedly restart message and carry the identification information of restarting to some extent MME;
Described releasing unit, be used for according to described identification information of restarting MME that message is restarted, judge that whether MME is restarted in institute is MME for management self, and restart MME judging for when managing the MME of self, discharge the resource of all UE that self serve;
And/or, be used for according to described identification information of restarting MME that message is restarted, judge restart each UE whether MME serve with self and be associated, and when judgement has UE to be associated with restarting MME, be associated with the restarting MME resource of UE of release.
In such scheme, described RN also comprises and returns the unit, be used for described receiving element receive described restart message after, return restart ack message to described DeNB.
The present invention also provides a kind of resource delivery system, and described system comprises: DeNB and RN, wherein,
Described DeNB comprises: transmitting element is used for sending to described RN and is used to indicate the message of restarting that MME restarts;
Described RN comprises receiving element and releasing unit, and wherein, receiving element is used for receiving the message of restarting of described DeNB transmission, and releasing unit is used for the message of restarting according to described receiving element reception, discharges the resource relevant with restarting MME.
Method for releasing resource of the present invention and device, system, after MME is restarted, RN receives restarting message and carrying out corresponding resource release of DeNB transmission, solved RN can not in time discharge unavailable resource after MME is restarted problem, can effectively avoid the wasting of resources, promote efficient utilization of resource, and be conducive to the operation of network, can also be so that UE can be connected to normal system equipment timely and effectively.
Description of drawings
Fig. 1 is the system configuration schematic diagram of evolution packet network;
Fig. 2 is for introducing Relay network architecture schematic diagram afterwards;
Fig. 3 is that MME is restarted rear notice to the flow chart of eNodeB in the prior art;
Fig. 4 is the realization flow figure of method for releasing resource of the present invention;
Fig. 5 is that the MME (UE-MME) that is used for management UE in the embodiment of the invention one is restarted the flow chart that rear RN carries out resource release;
Fig. 6 is that the MME (RN-MME) that is used for management RN in the embodiment of the invention two is restarted the flow chart that rear RN carries out resource release.
Embodiment
Basic thought of the present invention is, after DeNB knew that MME is restarted, the relevant information of the MME that will restart was notified to RN, and RN carries out resource and discharges according to the notice of described DeNB.So, discharge so that RN can be known in time that MME is restarted and in time carry out resource, avoid causing the wasting of resources, also be conducive to the operation of network.
Method for releasing resource of the present invention with reference to shown in Figure 4, mainly can comprise the steps:
Here, discharging the resource relevant with restarting MME is: the resource of the UE that discharge among all UE that described RN serves, is associated with restarting MME.
Particularly, described restart carry the identification information of restarting to some extent MME in the message;
Described RN is restarted message according to described, discharges the resource relevant with restarting MME, comprising:
Described RN is restarted the identification information of restarting MME in the message according to described, judge whether MME is restarted in institute is for the MME that manages self, and restart MME judging when being used for managing the MME of self, discharge the resource of all subscriber equipmenies (UE) of self serving;
And/or described RN is restarted the identification information of restarting MME in the message according to described, judges that institute restarts each UE whether MME serve with self and be associated, and when judgement has UE to be associated with restarting MME, be associated with the restarting MME resource of UE of release.
Wherein, when being used for managing the MME of described RN self, can think that all UE that described RN serves all are associated with restarting MME at restarting MME.
Particularly, described RN is restarted the identification information of restarting MME in the message according to described, judge whether MME is restarted in institute is for the MME that manages self, comprise: described RN with described restart the identification information of restarting MME in the message, with the identification information of the MME that is used for management self relatively, if consistent, judge that then institute restarts MME for for the MME that manages described RN self, if inconsistent, then judge to restart MME be not be used to the MME that manages described RN self, can not carry out the resource release movement.
Described RN is restarted the identification information of restarting MME in the message according to described, each UE whether MME that judgement is restarted serves with self is associated, comprise: described RN with described restart restart the identification information of MME in the message, the identification information with the MME that is used for management self each UE that serves compares respectively, if there is the identification information of MME corresponding to UE consistent with the identification information of restarting MME, judge that then institute restarts MME and be associated with described UE, otherwise, each UE that MME that judgement is restarted serves with self is not related, can not carry out the resource release movement.
Here, the identification information of described MME can be global unique MME sign (GUMMEI, Globally Unique MME Identifier) of MME or Internet Protocol (IP, the Internet Protocol) address of MME.
Wherein, described RN discharges the resource of all subscriber equipmenies (UE) of self serving or discharges the resource of the UE that is associated with restarting MME, comprise: RN sends the RRC release message to described UE, after described UE receives described RRC release message, discharge self shared resource, and return RRC release acknowledge message to described RN.
Here, described RN is when being used for the MME of management self according to the MME that identification information judgment is restarted of restarting MME, and after the resource of described RN release self all UE that serve, also again accesses.For example, RN can also be linked into MME or current the recovery on the normal MME of other normal operations again.
Here, described method can also comprise: described RN receives that described DeNB sends restart message after, also return restart ack message to described DeNB, confirm that to described DeNB described RN known that described MME restarts.
Accordingly, the present invention also provides a kind of RN, and described RN mainly comprises: receiving element and releasing unit, wherein, and receiving element, what be used for to receive that DeNB sends is used to indicate the message of restarting that MME restarts; Releasing unit, the message of restarting for receiving according to described receiving element discharges the resource relevant with restarting MME.
Wherein, describedly restart message and carry the identification information of restarting to some extent MME;
Described releasing unit, can be used for according to described identification information of restarting MME that message is restarted, judge that whether MME is restarted in institute is MME for management self, and restart MME judging for when managing the MME of self, discharge the resource of all UE that self serve; And/or, be used for according to described identification information of restarting MME that message is restarted, judge restart each UE whether MME serve with self and be associated, and when judgement has UE to be associated with restarting MME, be associated with the restarting MME resource of UE of release.
Here, described RN can also comprise and return the unit, be used for described receiving element receive described restart message after, return restart ack message to described DeNB.Particularly, receiving element receive described restart message after, start the described unit that returns and return restart ack message to described DeNB.
In addition, the present invention also provides a kind of resource delivery system, and described system comprises: DeNB and above-mentioned RN, and wherein, described DeNB comprises: transmitting element is used for sending to described RN and is used to indicate the message of restarting that MME restarts; Described RN comprises receiving element and releasing unit, and wherein, receiving element is used for receiving the message of restarting of described DeNB transmission, and releasing unit is used for the message of restarting according to described receiving element reception, discharges the resource relevant with restarting MME.
Here, described DeNB sends to described RN by transmitting element and to be used to indicate the message of restarting that MME restarts after knowing that MME is restarted (for example, receiving the notice of restarting of MME).
Embodiment one
In the present embodiment, the process that the MME (UE-MME) that is used for management UE is restarted rear RN releasing resource specifically can comprise the steps: as shown in Figure 5
Step 501, after MME was restarted, MME sends to the DeNB that self connects restarted message, notifies described DeNB.
Step 502, DeNB receive described restart message after, return restart ack message to described MME;
Step 503, DeNB sends to the RN that self connects restarts message, and the described MME of notice RN has occured to restart;
Here, DeNB is to the GUMMEI that can carry described MME of restarting in the message of restarting of RN transmission.
Step 504, the RN reception is described restarts message, and returns restart ack message to DeNB;
Step 505, RN determines each UE that is associated with the MME of restarting according to described GUMMEI of restarting in the message;
Particularly, RN with the GUMMEI of restarting MME, with each UE of self service the GUMMEI of corresponding each MME compare, UE the GUMMEI of corresponding MME when consistent with the GUMMEI of restarting MME, RN determines that described UE is associated with described MME of restarting.
Here, described RN in access procedure from DeNB obtain self serve each UE the relevant information of corresponding MME, comprise the GUMMEI of described MME.Particularly, in access procedure, DeNB manages described UE for each UE selects corresponding MME, and the GUMMEI of the MME that will select for each UE returns to RN and preserves.
Step 506, the resource of each UE that the described MME with restarting of RN release is associated finishes current flow process.
Particularly, RN discharges the resource of each UE that is associated with the MME of restarting, comprise: RN is connected (RRC to sending Radio Resource with each UE that the MME of restarting is associated, Radio Resource Connection) release message, each UE that described MME with restarting is associated receives described RRC release message, discharge self shared resource, and return RRC release acknowledge message to described RN.
Embodiment two
In the present embodiment, the process that the MME (RN-MME) that is used for management RN is restarted rear RN releasing resource specifically can comprise the steps: as shown in Figure 6
Step 601, after MME was restarted, MME sends to the DeNB that is connected with self restarted message;
Step 602, the DeNB reception is described restarts message, and returns restart ack message to MME;
Step 603, DeNB sends to the RN that self connects restarts message, and the described MME of notice RN has occured to restart;
Here, DeNB is to the GUMMEI that can carry the MME of restarting in the message of restarting of RN transmission.
Step 604, RN receives the message of restarting of DeNB transmission, and returns restart ack message to DeNB;
Step 605, RN is according to the receive GUMMEI of restarting in the message, judge that the MME restart is the MME of management self, then discharge the resource of all UE that self connect and again access (attach) to the MME of other normal operations or currently recovered normal MME;
Particularly, RN discharges the resource of all UE that self connect, comprising: RN sends the RRC release message to each UE that self connects, after described each UE receives described RRC release message, discharge self shared resource, and return RRC release acknowledge message to described RN.
Here, RN is according to the receive GUMMEI of restarting in the message, judge that the MME of restarting is for managing the MME of self, comprise: described RN will compare with the GUMMEI of restarting message that receives for the GUMMEI of the MME that manages self, if consistent, judge that then the MME of restarting for managing the MME of described RN self, if inconsistent, judges that then the MME of restarting is not the MME of management described RN self.
Here, described RN obtains the relevant information of MME for management self from DeNB in access procedure, comprises the GUMMEI of described MME.
Step 606, DeNB judges that the MME of restarting is RN-MME, the definite UE that is associated with the MME of restarting of DeNB, and to each MME (UE-MME) transmission UE context releasing request message that is used for managing described UE;
Step 607, described each MME (UE-MME) be used to managing described UE receives UE context releasing request message, discharges related resource, and returns UE context release order message to DeNB;
Step 608 after DeNB receives UE context release order message, is returned UE context Release complete to the MME of described UE.
Above-mentioned steps 606-608 is optional step.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (12)
1. a method for releasing resource is characterized in that, described method comprises:
Via node (RN) receives that donor base station (DeNB) sends is used to indicate the message of restarting that mobility management unit (MME) restarts;
Described RN is restarted message according to described, discharges the resource relevant with restarting MME.
2. described method for releasing resource according to claim 1 is characterized in that,
Describedly restart message and carry the identification information of restarting to some extent MME;
Described RN is restarted message according to described, discharges the resource relevant with restarting MME, comprising:
Described RN is restarted the identification information of restarting MME in the message according to described, judge whether MME is restarted in institute is for the MME that manages self, and restart MME judging when being used for managing the MME of self, discharge the resource of all subscriber equipmenies (UE) of self serving;
And/or described RN is restarted the identification information of restarting MME in the message according to described, judges that institute restarts each UE whether MME serve with self and be associated, and when judgement has UE to be associated with restarting MME, be associated with the restarting MME resource of UE of release.
3. described method for releasing resource according to claim 2 is characterized in that,
The identification information of described MME is global unique MME sign (GUMMEI) of MME.
4. according to claim 2 or 3 described method for releasing resource, it is characterized in that,
Described RN is restarted the identification information of restarting MME in the message according to described, judge whether MME is restarted in institute is for the MME that manages self, comprise: described RN with described restart the identification information of restarting MME in the message, with the identification information of the MME that is used for management self relatively, if consistent, judge that then institute restarts MME for for the MME that manages described RN self, if inconsistent, then judge to restart MME be not be used to the MME that manages described RN self.
5. according to claim 2 or 3 described method for releasing resource, it is characterized in that,
Described RN is restarted the identification information of restarting MME in the message according to described, each UE whether MME that judgement is restarted serves with self is associated, comprise: described RN with described restart restart the identification information of MME in the message, the identification information with the MME that is used for management self each UE that serves compares respectively, if there is the identification information of MME corresponding to UE consistent with the identification information of restarting MME, judge that then institute restarts MME and be associated with described UE, otherwise, each UE that MME that judgement is restarted serves with self is not related, can not carry out the resource release movement.
6. according to claim 2 or 3 described method for releasing resource, it is characterized in that,
Described RN discharges the resource of all subscriber equipmenies (UE) of self serving or discharges the resource of the UE that is associated with restarting MME, comprising:
Described RN sends the RRC release message to described UE, after described UE receives described RRC release message, discharges self shared resource, and returns RRC release acknowledge message to described RN.
7. according to claim 2 or 3 described method for releasing resource, it is characterized in that, described method also comprises:
Described RN is that described RN accesses after the resource of release self all UE that serve again when being used for the MME of management self according to the MME that identification information judgment is restarted of restarting MME.
8. described method for releasing resource according to claim 1 and 2 is characterized in that, described method also comprises:
Receive that described DeNB sends restart message after, described RN returns restart ack message to described DeNB.
9. a RN is characterized in that, described RN comprises: receiving element and releasing unit, wherein,
Receiving element, what be used for to receive that DeNB sends is used to indicate the message of restarting that MME restarts;
Releasing unit, the message of restarting for receiving according to described receiving element discharges the resource relevant with restarting MME.
10. RN according to claim 9 is characterized in that,
Describedly restart message and carry the identification information of restarting to some extent MME;
Described releasing unit, be used for according to described identification information of restarting MME that message is restarted, judge that whether MME is restarted in institute is MME for management self, and restart MME judging for when managing the MME of self, discharge the resource of all UE that self serve;
And/or, be used for according to described identification information of restarting MME that message is restarted, judge restart each UE whether MME serve with self and be associated, and when judgement has UE to be associated with restarting MME, be associated with the restarting MME resource of UE of release.
11. according to claim 9 or 10 described RN, it is characterized in that, described RN also comprises and returns the unit, be used for described receiving element receive described restart message after, return restart ack message to described DeNB.
12. a resource delivery system is characterized in that, described system comprises: DeNB and RN, wherein,
Described DeNB comprises: transmitting element is used for sending to described RN and is used to indicate the message of restarting that MME restarts;
Described RN comprises receiving element and releasing unit, and wherein, receiving element is used for receiving the message of restarting of described DeNB transmission, and releasing unit is used for the message of restarting according to described receiving element reception, discharges the resource relevant with restarting MME.
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