CN102869055A - Method and system for guaranteeing service continuity of RN (relay node) serving UE (user equipment) - Google Patents
Method and system for guaranteeing service continuity of RN (relay node) serving UE (user equipment) Download PDFInfo
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- CN102869055A CN102869055A CN2011101909639A CN201110190963A CN102869055A CN 102869055 A CN102869055 A CN 102869055A CN 2011101909639 A CN2011101909639 A CN 2011101909639A CN 201110190963 A CN201110190963 A CN 201110190963A CN 102869055 A CN102869055 A CN 102869055A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
- H04W76/34—Selective release of ongoing connections
Abstract
The invention discloses a method and a system for guaranteeing service continuity of a relay node serving user equipment, comprising the following steps: after a base station serving the relay node or the user equipment receives a message of unloading the relay node or the user equipment, transmitted by a mobile management entity connected with the relay node or the user equipment, the updating of the mobile management entity of the relay node or the user equipment is initiated. The invention also discloses a system for guaranteeing the service continuity of relay node serving the user equipment, through the method and the system, the UE under the service of the RN is prevented from releasing all connections, and the service continuity of the RN serving the UE is guaranteed.
Description
Technical field
The present invention relates to wireless communication technology field, refer to especially the method and system of the service continuity of a kind of assurance via node (RN) service-user equipment (UE).
Background technology
In order to satisfy the demand of growing large bandwidth high-speed mobile access, third generation partnership project (3GPP, Third Generation Partnership Projects) releases senior Long Term Evolution (LTE-Advanced, Long-Term Evolution advance) standard.LTE-Advanced is for Long Term Evolution (LTE, Long-Term Evolution) kept the core of LTE, and adopted on this basis a series of technology that frequency domain, spatial domain are expanded, to reach purposes such as improving the availability of frequency spectrum, increase power system capacity.
Wireless relay (Wireless Relay) is a key technology among the LTE-Advanced, be intended to coverage, the area, dead angle in the minimizing communication, balanced load, the business of transfer hot zones and the transmitting power of saving subscriber equipment (UE, User Equipment) of Extended Cell.As shown in Figure 1, via node (RN, Relay Node) provides and the similar function of common eNB and service the UE of access, accesses an eNB who serves it by wave point in the mode that is similar to common UE again, the eNB that serves RN is called Donor eNB, is called for short DeNB.DeNB and mobile management entity (MME, Mobility Management Entity) connect.MME comprises for the function that UE provides: Non-Access Stratum signaling, encryption and integrity protection; the mobility of 3GPP user in the 2G/3G/LTE network managed, specifically comprise the processing of the control signals such as user access control, authentication, data encryption, service bearer control, paging, switching controls.A plurality of MME serve a public geographic area together, and eNB or DeNB are connected to a plurality of MME in this zone with network structure in this geographic area.MME in this common geographical area set consists of a MME pond, this zone MME pool area that is otherwise known as, and corresponding several tracing areas when UE moves, do not need to change MME in these tracing areas.
Under relay scene, DeNB should select suitable MME for RN, also will select suitable MME for the UE of RN service.DeNB will consider the load balancing of MME when being RN and UE selection MME, namely guarantee the load balancing of each MME in the MME pool area.When system needs to remove certain MME from the MME pool area in the O﹠M process, all UE or the RN unloading of this MME service also be moved to other MME.In this process, to being in the UE of connection mode, MME initiates S1 release flow process to the eNB of correspondence, and release cause is the tracking area update that load balance causes; After eNB receives message, initiate RRC Connection Release flow process to UE, require to discharge with UE between RRC be connected, release cause is similarly the tracking area update that load balance causes; After UE receives message, discharge with eNB between be connected.And to being in the RN of connection mode, MME initiates the S1 that release cause is similarly the tracking area update that load balance causes to the DeNB of correspondence and discharges flow process, after DeNB receives message, discharge with RN between RRC be connected; In addition, RN also to discharge with the institute service UE between RRC be connected.MME unloading for common UE, affected only have UE itself, and unload for the MME of RN, then can have influence on the service continuity of the UE that RN serves, when for example the UE that serves of RN and this RN do not belong to same MME, the MME that these UE connect may not unload, and therefore there is no need to carry out the caused RRC connection of tracking area update and the S1 Connection Release that load balance causes.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of service continuity of the RN of assurance service UE, when not belonging to same MME to solve UE that RN was served with RN, the MME of RN unloads the problem of the service continuity that has influence on the UE that RN serves.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method that guarantees the service continuity of relay node services subscriber equipment, the method comprises:
After the base station of serving via node or subscriber equipment received the message of the described via node of unloading that the mobile management entity that is connected with described via node or subscriber equipment sends or subscriber equipment, the mobile management entity of initiating described via node or subscriber equipment upgraded.
Wherein, the mobile management entity of described initiation via node or subscriber equipment upgrades, and is specially: initiate the mobile management entity renewal of described via node or subscriber equipment in the mode that S1 in the residential quarter switches.
The mobile management entity that the described mode of switching with S1 in the residential quarter is initiated described via node or subscriber equipment upgrades, and specifically comprises:
After the described base station of serving via node or subscriber equipment received the message of the described via node of unloading or subscriber equipment, sending cause value to the mobile management entity that is connected with described via node or subscriber equipment was the handoff requirement message that S1 switches in the residential quarter;
After the described mobile management entity that is connected with via node or subscriber equipment receives described handoff requirement message, be described via node or subscriber equipment select target mobile management entity as the source mobile management entity, and send and transmit RELOCATION REQUEST message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity is received described forwarding RELOCATION REQUEST message and is judged when the gateway of described via node or subscriber equipment can be as the service of described via node or subscriber equipment, send handover request message to the described base station of serving via node or subscriber equipment, the control signal identifier that to carry described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation;
The described base station of serving via node or subscriber equipment is received described handover request message and is that S1 is switched and determined when being the switching within cell of described via node or subscriber equipment in the residential quarter according to described cause value, be the control signal identifier of described via node or the user equipment allocation control signal identifier that to be updated to described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation with described source mobile management entity, and send switching request acknowledgement message to described Suitable For Moving-goal Problems management entity.
After described Suitable For Moving-goal Problems management entity received the described switching request acknowledgement message that the described base station of serving via node or subscriber equipment sends, the method also comprised:
Described Suitable For Moving-goal Problems management entity sends to described source mobile management entity and transmits relocation response message;
After the source mobile management entity is received and transmitted relocation response message, send switching command message to the described base station of serving via node or subscriber equipment; The described base station of serving via node or subscriber equipment sends to described via node or subscriber equipment with described switching command message;
After described via node or subscriber equipment receive described switching command message, upgrade the safe context of self, and send switch acknowledgment message to the described base station of serving via node or subscriber equipment;
After described switch acknowledgment message is received in the described base station of serving via node or subscriber equipment, send handoff notification message to described Suitable For Moving-goal Problems management entity;
After described Suitable For Moving-goal Problems management entity receives described handoff notification message, send the forwarding reorientation and finish notification message to described source mobile management entity;
Described source mobile management entity receives described forwarding reorientation finish notification message after, return and transmit reorientation and finish acknowledge message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity receives described forwarding reorientation finish acknowledge message after, send to revise bearing request message to the gateway of described via node or subscriber equipment;
The gateway of described via node or subscriber equipment receives described modification bearing request message, carry out bearing modification after, send to revise bearing response message to described Suitable For Moving-goal Problems management entity; Then, the described base station of serving via node or subscriber equipment sends customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message to described source mobile management entity;
Described source mobile management entity discharges the relevant contextual information of described via node or subscriber equipment after receiving described customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message.
The message of described unloading via node or subscriber equipment perhaps, is carried by mobile management entity unloading via node or subscriber equipment Indication message by the carrying of customer equipment context release command message;
The release cause that described customer equipment context release command message is carried is: the tracking area update that load balance causes.
The present invention also provides a kind of system that guarantees the service continuity of relay node services subscriber equipment, comprising: via node or subscriber equipment, serve the base station and the mobile management entity that is connected with described via node or subscriber equipment of described via node or subscriber equipment;
Wherein, the described mobile management entity that is connected with via node or subscriber equipment is used for sending the message that unloads described via node or subscriber equipment to described base station;
Described base station is used for after the message that receives described unloading via node or subscriber equipment, and the mobile management entity of initiating described via node or subscriber equipment upgrades.
Wherein, described base station also is used for initiating in the mode that S1 in the residential quarter switches the mobile management entity renewal of described via node or subscriber equipment.
This system also comprises: the Suitable For Moving-goal Problems management entity of described via node or subscriber equipment and the gateway of described via node or subscriber equipment;
Described base station also is used for after the message that receives the described via node of unloading or subscriber equipment, and sending cause value to the described mobile management entity that is connected with via node or subscriber equipment is the handoff requirement message that S1 switches in the residential quarter;
The described mobile management entity that is connected with via node or subscriber equipment is as the source mobile management entity, also be used for according to described handoff requirement message, for described via node or subscriber equipment are selected described Suitable For Moving-goal Problems management entity, and send and transmit RELOCATION REQUEST message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity, be used for when receiving described forwarding RELOCATION REQUEST message and judge that described gateway can be as described via node or subscriber equipment service, send handover request message to described base station, the control signal identifier that to carry described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation;
Described base station, also be used for receiving described handover request message and being that S1 is switched and determined when being the switching within cell of described via node or subscriber equipment in the residential quarter according to described cause value, be the control signal identifier of described via node or the user equipment allocation control signal identifier that to be updated to described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation with described source mobile management entity, and send switching request acknowledgement message to described Suitable For Moving-goal Problems management entity.
Described Suitable For Moving-goal Problems management entity also is used for after the described switching request acknowledgement message that receives the transmission of described base station, sends to described source mobile management entity and transmits relocation response message;
Described source mobile management entity also is used for sending switching command message to described base station after receiving the forwarding relocation response message; Described base station sends to described via node or subscriber equipment with described switching command message;
Described via node or subscriber equipment after being used for receiving described switching command message, upgrade the safe context of self, and send switch acknowledgment message to described base station;
Described base station also is used for sending handoff notification message to described Suitable For Moving-goal Problems management entity after receiving described switch acknowledgment message;
Described Suitable For Moving-goal Problems management entity after also being used for receiving described handoff notification message, sends the forwarding reorientation and finishes notification message to described source mobile management entity;
Described source mobile management entity after also being used for receiving described forwarding reorientation and finishing notification message, returns and transmits reorientation and finish acknowledge message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity after also being used for receiving described forwarding reorientation and finishing acknowledge message, sends and revises bearing request message to described gateway;
Described gateway also is used for receiving described modification bearing request message, carry out bearing modification after, send and revise bearing response message to described Suitable For Moving-goal Problems management entity;
Described base station, also be used for after described gateway transmission modification bearing response message is to described Suitable For Moving-goal Problems management entity, sending customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message to described source mobile management entity;
Described source mobile management entity also for after receiving described customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message, discharges the relevant contextual information of described via node or subscriber equipment.
The message of described unloading via node or subscriber equipment perhaps, is carried by mobile management entity unloading via node or subscriber equipment Indication message by the carrying of customer equipment context release command message;
The release cause that described customer equipment context release command message is carried is: the tracking area update that load balance causes.
The present invention guarantees the method and system of the service continuity of RN service UE, after the base station of serving RN or UE receives the message of this RN of unloading that the source MME of RN or UE sends or UE, the MME that initiates RN or UE upgrades, rather than the MME of available technology adopting directly initiates to discharge flow process to the base station of correspondence.After the MME of RN renewal is finished, that serve for this RN and do not have and this RN is connected to for the UE of same MME, source MME has just unloaded RN, do not unload this part UE, therefore after the MME of RN upgrades and finishes, RN can also continue as this part UE service is provided, and connects thereby all UE that avoid RN to serve discharge all, has guaranteed the service continuity of RN institute service UE.
Description of drawings
Fig. 1 is the method flow schematic diagram of the present invention's service continuity of guaranteeing the RN service UE;
Fig. 2 is the method flow schematic diagram that the embodiment of the invention one guarantees the service continuity of RN service UE;
Fig. 3 is the method flow schematic diagram that the embodiment of the invention two guarantees the service continuity of RN service UE;
Fig. 4 is the method flow schematic diagram of the embodiment of the invention three unloading UE;
Fig. 5 is the method flow schematic diagram of the embodiment of the invention four unloading UE.
Embodiment
The present invention guarantees that the basic thought of method of the service continuity of RN service UE is: when receiving the unloading message that MME sends, the MME that RN or UE are initiated in the base station upgrades, but not the flow process of MME unloading RN or UE.As shown in Figure 1, method of the present invention comprises:
Step 101, the MME that is connected with RN or UE sends the message of unloading RN or UE to the base station of serving RN or UE.
Wherein, the message of unloading RN or UE can by the carrying of customer equipment context release command message, perhaps, be carried by MME unloading RN or UE Indication message; Further, MME unloading RN or UE Indication message are again balance unloading RN or UE Indication message of MME.
Above-mentioned, the release cause that the customer equipment context release command message is carried is: the tracking area update that load balance causes.
Step 102, the MME renewal of RN or UE is initiated in the base station of serving RN or UE.
Concrete, the mobile management entity that the mode that switch with S1 in the residential quarter base station is initiated RN or UE upgrades.
Below by specific embodiment the solution of the present invention is described.
Embodiment one
When system needs to remove certain MME from the MME pool area in the O﹠M process, all UE or the RN unloading of this MME service also be moved to other MME.
Among this embodiment, suppose to determine that MME need to carry out balance again and all unload, and MME selects the RN of service to unload, corresponding, this RN UE that serve, that be connected to this MME also can be unloaded, and the UE that this RN serves, be not connected to this MME does not have unloaded.Certainly, MME also can select the UE that serves to unload, the process that its detailed process selects the RN of service to unload with MME.
The process that the RN that serves take the MME selection unloads as shown in Figure 2, guarantees that the handling process of the service continuity of RN service UE comprises as example:
Step 201, for the RN that is in connection mode, connected MME (this MME need to remove from the MME pool area) sends the customer equipment context release command message to the DeNB (namely serving the eNB of this RN) of correspondence, and release cause is the tracking area update that load balance causes.At this moment, this MME continues to keep context and the corresponding Deta bearer information of RN.
Step 202, after DeNB received the customer equipment context release command message, DeNB sent handoff requirement message to the MME that is connected with RN, and cause value is that S1 switches in the residential quarter, purpose is upgraded for the MME that initiates RN, and the target BS in this handoff requirement message still is this DeNB.
Step 203, after the MME that is connected with RN receives that cause value is the handoff requirement message that S1 switches in the residential quarter, source MME as RN is that RN selects new MME (the present invention is referred to as target MME), and send to transmit RELOCATION REQUEST message to target MME, this message comprises RN at the context of source MME (such as the S-GW address of RN safe context, RN network capabilities, RN and the information such as context of Deta bearer).
Step 204 after the target MME of RN receives and transmits RELOCATION REQUEST message, judges whether gateway (S-GW) still can be for RN serves, and if so, target MME sends handover request message to DeNB; Comprising target MME in the handover request message is the control signal identifier that RN distributes;
Step 205, after DeNB receives handover request message, judge that this switching is the switching within cell of RN, then DeNB is updated to target MME for the control signal identifier of its distribution with the source MME of this RN for the control signal identifier of its distribution, then sends switching request acknowledgement message to the target MME of RN.
Step 206 after the target MME of RN receives switching request acknowledgement message, sends and transmits relocation response message to the source MME of RN.
Step 207, source MME sends switching command message to DeNB, and DeNB further transmits switching command message to RN.
Step 208 after RN receives switching command message, is upgraded the safe context of self, then sends switch acknowledgment message to DeNB.
Step 209 after DeNB receives switch acknowledgment message, sends handoff notification message to the target MME of RN.
Step 210～211, the target MME of RN sends the forwarding reorientation and finishes notification message to the source MME of RN; The source MME of RN replys accordingly the forwarding reorientation and finishes acknowledge message to the target MME of RN.
Step 212, the target MME of RN sends and revises bearing request message to the S-GW of RN, comprising target MME address, the information such as TEID.
Step 213, the S-GW of RN receives the modification bearing request message, and then the corresponding modify of carrying sends and revises bearing response message to the target MME of RN.
Step 214, because the S-GW of RN also is positioned at DeNB, therefore after the S-GW of RN sends the target MME of modification bearing response message to RN, DeNB can send the customer equipment context Release complete to the source MME of RN, after the source MME of RN receives this message, discharge the relevant contextual information of this RN, then RN finishes from the process that source MME unloaded and moved to target MME.
Embodiment two
The processing procedure of this embodiment and the flow process of Fig. 2 are basic identical, and difference is, as shown in Figure 3:
In the step 301, what the MME that is connected with RN sent to the DeNB of service RN is MME unloading RN Indication message (preferably, for MME again balance unloading RN Indication message); Accordingly, DeNB receives that MME is again behind the balance unloading RN Indication message, to the MME transmission handoff requirement message that is connected with RN in the step 302.
At last, in the step 314, after the S-GW of RN sends the target MME of modification bearing response message to RN, DeNB can send MME unloading RN acknowledge message (preferably, be MME balance unloading RN acknowledge message again) give the source MME of RN, after the source MME of RN receives this message, discharge the contextual information relevant with this RN.
Can find out from above-mentioned two embodiment, the cause value of being initiated by DeNB is that the MME of the RN that S1 switches in the residential quarter is more in the new technological process, that serve for RN and do not belong to the UE of same MME with this RN, source MME has just unloaded RN, do not unload this part UE, therefore RN provides service from continuing as these UE after source MME switches to target MME, has guaranteed the continuity of UE service.
In addition, the invention allows for when removing MME the handling process of unloading UE.
Embodiment three
When system needs to remove certain MME from the MME pool area in the O﹠M process, all UE or the RN unloading of this MME service be moved to other MME.
Among this embodiment, suppose that MME need to carry out partial relief, then preferentially select domestic consumer's device node, be that UE unloads; Certainly, also can select RN to unload.
To select UE to unload as example, as shown in Figure 4, guarantee that the handling process of the service continuity of RN service UE comprises:
Step 401, for the UE that is in connection mode, connected MME (this MME need to remove from the MME pool area) sends the customer equipment context release command message to the eNB (namely serving the eNB of this UE) of correspondence, and release cause is the tracking area update that load balance causes.At this moment, this MME continues to keep context and the corresponding Deta bearer information of UE (UE that refers to source MME service herein).
Step 402 after eNB receives the customer equipment context release command message, sends handoff requirement message to the MME that is connected with UE, and cause value is that S1 switches in the residential quarter, and the target BS in the handoff requirement message still is this eNB.
Step 403, after the MME that is connected with UE receives that cause value is the handoff requirement message that S1 switches in the residential quarter, source MME as UE is UE select target MME, and send to transmit RELOCATION REQUEST message to target MME, this message comprises UE at the context of source MME (such as the S-GW address of UE safe context, UE network capabilities, UE and the information such as context of Deta bearer).
Step 404 after the target MME of UE receives and transmits RELOCATION REQUEST message, judges whether the gateway (S-GW) of UE still can be for UE serves, and if so, target MME sends handover request message to DeNB; Comprising target MME in the handover request message is the control signal identifier that UE distributes;
Step 405 after eNB receives handover request message, judges that this switching is the switching within cell of UE, and it is the control signal identifier that UE distributes that the MME that then eNB is corresponding with this UE is updated to target MME, then sends switching request acknowledgement message to the target MME of UE.
Step 406 after the target MME of UE receives switching request acknowledgement message, sends and transmits relocation response message to the source MME of UE.
Step 407, source MME sends switching command message to eNB, and eNB further transmits switching command message to UE.
Step 408 after UE receives switching command message, is upgraded the information of safe context, then sends switch acknowledgment message to DeNB.
Step 409 after eNB receives switch acknowledgment message, sends handoff notification message to the target MME of UE.
Step 410～411, the target MME of UE sends the forwarding reorientation and finishes notification message to the source MME of UE; The source MME of UE replys accordingly the forwarding reorientation and finishes acknowledge message to the target MME of UE.
Step 412, the target MME of UE sends and revises bearing request message to the S-GW of UE, comprising target MME address, the information such as TEID.
Step 413, the S-GW of UE sends and revises bearing response message to the target MME of UE.
Step 414, because the S-GW of UE also is positioned at eNB, therefore after the S-GW of UE sends the target MME of modification bearing response message to UE, eNB can send the customer equipment context Release complete to the source MME of UE, after the source MME of UE receives this message, discharge the contextual information relevant with this UE, then UE finishes from the process that source MME unloaded and moved to target MME.
Embodiment four
When system needs to remove certain MME from the MME pool area in the O﹠M process, all UE or the RN unloading of this MME service be moved to other MME.
The processing procedure of this embodiment and the flow process of Fig. 4 are basic identical, and difference is, as shown in Figure 5:
In the step 501, what the MME that is connected with UE sent to the eNB of service UE is MME unloading UE Indication message (preferably, for MME again balance unloading UE Indication message); Accordingly, eNB receives that MME is again behind the balance unloading UE Indication message, to the MME transmission handoff requirement message that is connected with UE in the step 502.
At last, in the step 514, after the S-GW of UE sends the target MME of modification bearing response message to UE, eNB can send MME unloading UE acknowledge message (preferably, be MME balance unloading UE acknowledge message again) give the source MME of UE, after the source MME of UE receives this message, discharge the contextual information relevant with this UE.
In order to realize said method, the present invention also provides a kind of system of service continuity of the RN of assurance service UE, comprising: RN or UE, serve the base station and the MME that is connected with RN or UE of RN or UE;
Wherein, the MME that is connected with RN or UE is used for to the message of base station transmission unloading RN or UE;
The base station is used for after the message that receives unloading RN or UE, and the MME that initiates RN or UE upgrades.
Wherein, the base station also is used for initiating in the mode that S1 in the residential quarter switches the MME renewal of RN or UE.
This system also comprises: the gateway of the target MME of RN or UE and RN or UE;
The base station also is used for after the message that receives unloading RN or UE, and sending cause value to the MME that is connected with RN or UE is the handoff requirement message that S1 switches in the residential quarter;
The MME that is connected with RN or UE also is used for according to handoff requirement message as source MME, is RN or UE select target MME, and sends the forwarding RELOCATION REQUEST message to target MME;
Target MME is used for sending handover request message to the base station when transmitting RELOCATION REQUEST message and judging that gateway can be as RN or UE service receiving, carrying target MME is the control signal identifier that RN or UE distribute;
The base station, also be used for receiving handover request message and being that S1 is switched and determined when being the switching within cell of RN or UE in the residential quarter according to cause value, with source MME be control signal identifier that RN or UE distribute to be updated to target MME be the control signal identifier that RN or UE distribute, and send switching request acknowledgement message to target MME.
Target MME also is used for after the switching request acknowledgement message that receives the base station transmission, sends to source MME and transmits relocation response message;
Source MME also is used for sending switching command message to the base station after receiving the forwarding relocation response message; The base station sends to RN or UE with switching command message;
RN or UE after being used for receiving switching command message, upgrade the safe context of self, and send switch acknowledgment message to the base station;
The base station also is used for sending handoff notification message to target MME after receiving switch acknowledgment message;
Target MME after also being used for receiving handoff notification message, sends the forwarding reorientation and finishes notification message to source MME;
Source MME also is used for receiving and transmits after reorientation finishes notification message, returns to transmit reorientation and finish acknowledge message to target MME;
Target MME also is used for receiving and transmits after reorientation finishes acknowledge message, sends and revises bearing request message to gateway;
Gateway also is used for receiving the modification bearing request message, carry out bearing modification after, send and revise bearing response message to target MME;
The base station also is used for sending customer equipment context Release complete or MME unloading RN or UE acknowledge message to source MME after gateway transmission modification bearing response message is to target MME;
Source MME also for after receiving customer equipment context Release complete or MME unloading RN or UE acknowledge message, discharges the relevant contextual information of RN or UE.
The message of unloading RN or UE perhaps, is carried by MME unloading RN or UE Indication message by the carrying of customer equipment context release command message;
The release cause that the customer equipment context release command message is carried is: the tracking area update that load balance causes.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (10)
1. a method that guarantees the service continuity of relay node services subscriber equipment is characterized in that, the method comprises:
After the base station of serving via node or subscriber equipment received the message of the described via node of unloading that the mobile management entity that is connected with described via node or subscriber equipment sends or subscriber equipment, the mobile management entity of initiating described via node or subscriber equipment upgraded.
2. the method for the service continuity of described assurance relay node services subscriber equipment according to claim 1 is characterized in that,
The mobile management entity of described initiation via node or subscriber equipment upgrades, and is specially: initiate the mobile management entity renewal of described via node or subscriber equipment in the mode that S1 in the residential quarter switches.
3. the method for the service continuity of described assurance relay node services subscriber equipment according to claim 2 is characterized in that, the mobile management entity that the described mode of switching with S1 in the residential quarter is initiated described via node or subscriber equipment upgrades, and specifically comprises:
After the described base station of serving via node or subscriber equipment received the message of the described via node of unloading or subscriber equipment, sending cause value to the mobile management entity that is connected with described via node or subscriber equipment was the handoff requirement message that S1 switches in the residential quarter;
After the described mobile management entity that is connected with via node or subscriber equipment receives described handoff requirement message, be described via node or subscriber equipment select target mobile management entity as the source mobile management entity, and send and transmit RELOCATION REQUEST message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity is received described forwarding RELOCATION REQUEST message and is judged when the gateway of described via node or subscriber equipment can be as the service of described via node or subscriber equipment, send handover request message to the described base station of serving via node or subscriber equipment, the control signal identifier that to carry described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation;
The described base station of serving via node or subscriber equipment is received described handover request message and is that S1 is switched and determined when being the switching within cell of described via node or subscriber equipment in the residential quarter according to described cause value, be the control signal identifier of described via node or the user equipment allocation control signal identifier that to be updated to described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation with described source mobile management entity, and send switching request acknowledgement message to described Suitable For Moving-goal Problems management entity.
4. the method for the service continuity of described assurance relay node services subscriber equipment according to claim 3, it is characterized in that, after described Suitable For Moving-goal Problems management entity received the described switching request acknowledgement message that the described base station of serving via node or subscriber equipment sends, the method also comprised:
Described Suitable For Moving-goal Problems management entity sends to described source mobile management entity and transmits relocation response message;
After the source mobile management entity is received and transmitted relocation response message, send switching command message to the described base station of serving via node or subscriber equipment; The described base station of serving via node or subscriber equipment sends to described via node or subscriber equipment with described switching command message;
After described via node or subscriber equipment receive described switching command message, upgrade the safe context of self, and send switch acknowledgment message to the described base station of serving via node or subscriber equipment;
After described switch acknowledgment message is received in the described base station of serving via node or subscriber equipment, send handoff notification message to described Suitable For Moving-goal Problems management entity;
After described Suitable For Moving-goal Problems management entity receives described handoff notification message, send the forwarding reorientation and finish notification message to described source mobile management entity;
Described source mobile management entity receives described forwarding reorientation finish notification message after, return and transmit reorientation and finish acknowledge message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity receives described forwarding reorientation finish acknowledge message after, send to revise bearing request message to the gateway of described via node or subscriber equipment;
The gateway of described via node or subscriber equipment receives described modification bearing request message, carry out bearing modification after, send to revise bearing response message to described Suitable For Moving-goal Problems management entity; Then, the described base station of serving via node or subscriber equipment sends customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message to described source mobile management entity;
Described source mobile management entity discharges the relevant contextual information of described via node or subscriber equipment after receiving described customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message.
5. the method for the service continuity of arbitrary described assurance relay node services subscriber equipment in 4 according to claim 1, it is characterized in that, the message of described unloading via node or subscriber equipment is by the carrying of customer equipment context release command message, perhaps, by mobile management entity unloading via node or the carrying of subscriber equipment Indication message;
The release cause that described customer equipment context release command message is carried is: the tracking area update that load balance causes.
6. system that guarantees the service continuity of relay node services subscriber equipment, it is characterized in that, comprising: via node or subscriber equipment, serve the base station and the mobile management entity that is connected with described via node or subscriber equipment of described via node or subscriber equipment;
Wherein, the described mobile management entity that is connected with via node or subscriber equipment is used for sending the message that unloads described via node or subscriber equipment to described base station;
Described base station is used for after the message that receives described unloading via node or subscriber equipment, and the mobile management entity of initiating described via node or subscriber equipment upgrades.
7. the system of the service continuity of described assurance relay node services subscriber equipment according to claim 6 is characterized in that, described base station, and the mobile management entity that also is used for initiating in the mode that S1 in the residential quarter switches described via node or subscriber equipment upgrades.
8. the system of the service continuity of described assurance relay node services subscriber equipment according to claim 7, it is characterized in that, this system also comprises: the Suitable For Moving-goal Problems management entity of described via node or subscriber equipment and the gateway of described via node or subscriber equipment;
Described base station also is used for after the message that receives the described via node of unloading or subscriber equipment, and sending cause value to the described mobile management entity that is connected with via node or subscriber equipment is the handoff requirement message that S1 switches in the residential quarter;
The described mobile management entity that is connected with via node or subscriber equipment is as the source mobile management entity, also be used for according to described handoff requirement message, for described via node or subscriber equipment are selected described Suitable For Moving-goal Problems management entity, and send and transmit RELOCATION REQUEST message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity, be used for when receiving described forwarding RELOCATION REQUEST message and judge that described gateway can be as described via node or subscriber equipment service, send handover request message to described base station, the control signal identifier that to carry described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation;
Described base station, also be used for receiving described handover request message and being that S1 is switched and determined when being the switching within cell of described via node or subscriber equipment in the residential quarter according to described cause value, be the control signal identifier of described via node or the user equipment allocation control signal identifier that to be updated to described Suitable For Moving-goal Problems management entity be described via node or user equipment allocation with described source mobile management entity, and send switching request acknowledgement message to described Suitable For Moving-goal Problems management entity.
9. the system of the service continuity of described assurance relay node services subscriber equipment according to claim 8 is characterized in that,
Described Suitable For Moving-goal Problems management entity also is used for after the described switching request acknowledgement message that receives the transmission of described base station, sends to described source mobile management entity and transmits relocation response message;
Described source mobile management entity also is used for sending switching command message to described base station after receiving the forwarding relocation response message; Described base station sends to described via node or subscriber equipment with described switching command message;
Described via node or subscriber equipment after being used for receiving described switching command message, upgrade the safe context of self, and send switch acknowledgment message to described base station;
Described base station also is used for sending handoff notification message to described Suitable For Moving-goal Problems management entity after receiving described switch acknowledgment message;
Described Suitable For Moving-goal Problems management entity after also being used for receiving described handoff notification message, sends the forwarding reorientation and finishes notification message to described source mobile management entity;
Described source mobile management entity after also being used for receiving described forwarding reorientation and finishing notification message, returns and transmits reorientation and finish acknowledge message to described Suitable For Moving-goal Problems management entity;
Described Suitable For Moving-goal Problems management entity after also being used for receiving described forwarding reorientation and finishing acknowledge message, sends and revises bearing request message to described gateway;
Described gateway also is used for receiving described modification bearing request message, carry out bearing modification after, send and revise bearing response message to described Suitable For Moving-goal Problems management entity;
Described base station, also be used for after described gateway transmission modification bearing response message is to described Suitable For Moving-goal Problems management entity, sending customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message to described source mobile management entity;
Described source mobile management entity also for after receiving described customer equipment context Release complete or mobile management entity unloading via node or subscriber equipment acknowledge message, discharges the relevant contextual information of described via node or subscriber equipment.
10. the system of the service continuity of arbitrary described assurance relay node services subscriber equipment in 9 according to claim 6, it is characterized in that, the message of described unloading via node or subscriber equipment is by the carrying of customer equipment context release command message, perhaps, by mobile management entity unloading via node or the carrying of subscriber equipment Indication message;
The release cause that described customer equipment context release command message is carried is: the tracking area update that load balance causes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101909639A CN102869055A (en) | 2011-07-08 | 2011-07-08 | Method and system for guaranteeing service continuity of RN (relay node) serving UE (user equipment) |
| PCT/CN2012/072889 WO2012155677A1 (en) | 2011-07-08 | 2012-03-23 | Method and system for ensuring service continuity when relay node serves user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101909639A CN102869055A (en) | 2011-07-08 | 2011-07-08 | Method and system for guaranteeing service continuity of RN (relay node) serving UE (user equipment) |
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| CN102869055A true CN102869055A (en) | 2013-01-09 |
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| CN2011101909639A Pending CN102869055A (en) | 2011-07-08 | 2011-07-08 | Method and system for guaranteeing service continuity of RN (relay node) serving UE (user equipment) |
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| WO (1) | WO2012155677A1 (en) |
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| WO2012155677A1 (en) | 2012-11-22 |
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