Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is confirmed that method, the Mobility Management Entity of default bearer are described in detail.
Embodiment 1
As shown in Figure 2, a kind of method of confirming default bearer comprises:
201, when subscriber equipment moved in the System Architecture Evolution SAE network, Mobility Management Entity MME obtained the carrying tabulation that gateway device is created according to instruction, and wherein said carrying tabulation comprises at least one carrying; Described subscriber equipment moves to the SAE network and comprises: subscriber equipment switches to the SAE network from the PRE-SAE network; Perhaps subscriber equipment switches to the 3GPP network from non-3GPP network; Perhaps relocating user equipment is to the SAE network.
202, MME selects a carrying as default bearer from described carrying tabulation,
203, MME sends to described default bearer indication information at least one of following network element: user equipment (UE), grouped data network gateway P-GW and gateway S-GW.
The embodiment of the invention is confirmed the method for default bearer, when subscriber equipment moves in the System Architecture Evolution SAE network, for example subscriber equipment moves to the EPS network from Pre-SAE networks such as GSM/GPRS/UMTS, when if objective network can not be distinguished default bearer and dedicated bearing, then from the carrying tabulation, select default bearer; And the default bearer indication information is sent to user equipment (UE) and or gateway device.User equipment (UE) and gateway device can determine which is carried as default bearer, therefore can normally carry out flow processs such as PDN link release and dedicated bearing foundation, and the flow process that has solved when the different radio access style switches is set up problem.
Embodiment 2
As shown in Figure 3, a kind of method of confirming default bearer comprises:
301, when subscriber equipment moved in the System Architecture Evolution SAE network, Mobility Management Entity MME received contextual information; Described subscriber equipment moves to the SAE network and comprises: subscriber equipment switches to the SAE network from the PRE-SAE network; Perhaps subscriber equipment switches to the 3GPP network from non-3GPP network; Perhaps relocating user equipment is to the SAE network.
302, Mobility Management Entity MME obtains the carrying tabulation from described contextual information.
303, Mobility Management Entity MME obtains the carrying tabulation that gateway device is created according to instruction, and wherein said carrying tabulation comprises at least one carrying;
Wherein, MME selects a carrying to comprise as the step of default bearer from described carrying tabulation:
(1) obtain configuration parameter, described configuration parameter comprises: QCI (quality control identify, quality control sign) and ARP (assign retain priority distributes to keep priority);
(2) from the carrying tabulation, select default bearer according to configuration parameter.
Can be operator's configuration parameter (for example signatory QCI, the ARP etc.) comparison that will carry carrying and target mobility management network element in the tabulation, with close carrying as default bearer.
Also can be for will carrying carrying user and the subscription data comparison in the tabulation, the QCI that will contract, the close carrying of configuration parameters such as ARP is as default bearer.For example, subscription data can send to target mobility management network element by former mobile management network element, also can send to target mobility management network element by home location server.
Optionally, MME selects a carrying to comprise as the step of default bearer from described carrying tabulation:
(1) obtains the QOS parameter that the user contracts;
(2) from the carrying tabulation, select default bearer according to described QOS parameter.
In addition, from carrying tabulation, select default bearer step can also for:
To carry the tabulation in have TFT (Traffic Flow Template, transmission stream template) carrying as dedicated bearing, with other the carrying as default bearer;
Perhaps, will carry in the tabulation carrying of first background classes as default bearer;
Perhaps, will carry in the tabulation carrying of first interactive class as default bearer;
Perhaps, carrying tabulation medium priority is the highest background classes carrying is as default bearer;
Perhaps, carrying tabulation medium priority is the highest interactive class carrying is as default bearer.
Those skilled in the art selects the method for default bearer can be used for other embodiment of the present invention as can be known.
304, MME selects a carrying as default bearer from described carrying tabulation, and the default bearer indication information is sent to following network element at least one: user equipment (UE), grouped data network gateway P-GW and gateway S-GW.
Described gateway device comprises grouped data network gateway PDN-GW or gateway.Described MME with the step that described default bearer indication information sends to PDN-GW is: MME sends to PDN-GW with described default bearer indication information by gateway.
Can the default bearer indication information be sent to gateway with the form of message.Can send the default bearer indication information in the following way:
1, in message, carries cell, such as TAU Accept (tracking area update reception) message, Create/Update Bearer Request (renewal/generation carrying request) message etc. are carried Default Bearer Indication (default bearer indication) in message.For example, Indication message is following individual cells form:
EBI (0)-EBI (N): this is carried as default bearer can to use 1 sign, and 0 is dedicated bearing.
For example, the bit of EBI (2) is 1 o'clock, identifies this and is carried as default bearer, otherwise be dedicated bearing.
2, can in message, adopt the form that is similar to (Bearer ID, Default Bearer Indication) two tuples.Wherein, the ID (identifier) of Bearer ID representative carrying, on behalf of this, Default BearerIndication be carried as default bearer.
Embodiment 3
Describe below, the embodiment of the invention confirms that the method for default bearer is used for the step of TAU flow process.
As shown in Figure 4, described step comprises:
401, subscriber equipment is sent out TAU Request message to target mobility management network element.
402, target mobility management network element sends Context Request message to former mobile management network element and asks for contextual information.
403, former mobile management network element is sent out Context Response message to target mobility management network element and is returned customer equipment context information.
404, target mobility management network element is sent out Context Acknowledge message to former mobile management network element.This step is used to exchange contextual information, comprises the carrying tabulation in the contextual information.
405, that or which target mobility management network element indicate be carried as default bearer to gateway.
In this step, at first, target mobility management network element is confirmed default bearer from the carrying tabulation.
Then, if gateway does not change, the target mobile management net element sends UpdateBearer Request message to gateway, is used to upgrade beared information.Carry Indication message (EPS BearerIdentity, Default Bearer Indication) two tuple message in the message, Default BearerIndication is used to indicate whether this carrying is default bearer.Indication message also can be with the form of individual cells, and is as follows:
EBI (0)-EBI (N): this is carried as default bearer can to use 1 sign, and 0 is dedicated bearing.
For example, EBI (2) is 1 o'clock, identifies this and is carried as default bearer, otherwise be dedicated bearing.
If gateway changes, target mobility management network element sends CreateBearer Request to gateway, carry Indication message in the message, Indication message can be the form of (EPS Bearer Identity, Default Bearer Indication) two tuples.Default Bearer Indication is used to indicate whether this carrying is default bearer.Indication message also can be with aforesaid individual cells form.
If the interface between 406 gateways and the grouped data network gateway uses GPRS Tunnel Protocol (GTP, GPRS Tunneling Protocol), then gateway sends UpdateBearer Request to grouped data network gateway, comprise Indication message in the message, Indication message can be (EPS Bearer Identity, Default Bearer Indication) two tuple forms, Default Bearer Indication is used to indicate whether this carrying is default bearer.Indication message also can be with individual cells form as implied above.Packet data gateway is preserved the default bearer indication, in the flow processs such as dedicated bearing foundation of follow-up initiation, carry link bearing identification (LBI, Linked Bearer Identity), this is designated the corresponding bearing identification of default bearer indication, is used for determining which PDN link newly-built carrying belongs to.After subscriber equipment receives that request message is set up in carrying, the described PDN of newly-built carrying and default bearer is linked related, be used for communication traffic.
If using, the interface between gateway and the grouped data network gateway acts on behalf of mobile Internet Protocol (PMIP, Proxy Mobile Internet Protocol), then gateway sends agent binding update (Proxy Binding Update) message and gives PDN GW.This time, gateway did not need the default bearer indication information is issued grouped data network gateway.Gateway is preserved the default bearer indication, in the flow processs such as dedicated bearing couple very much in love of follow-up initiation, carry link bearing identification (LBI, Linked Bearer Identity), this is designated the corresponding bearing identification of default bearer indication, is used for determining which PDN link newly-built carrying belongs to.After subscriber equipment received that request message is set up in carrying, the PDN link that newly-built carrying is affiliated with linking bearing identification (LBI, Linked Bearer Identity) was related, is used for communication traffic.
407, grouped data network gateway sends Update Bearer Response message to gateway, and perhaps agent binding is confirmed (Proxy Binding Acknowledge) message.
408, gateway is replied to the affirmation that target mobility management network element sends the default bearer Indication message.
If gateway does not change, gateway sends UpdateBearer Response message to target mobility management network element, if gateway changes, gateway sends Create Bearer Response message to grouped data network gateway.
409, target mobility management network element sends Tracking Area Update Accept message to subscriber equipment, carry indication information in the message, Indication message can be (Default Bearer Id, DefaultBearer) two tuple forms, notifying user equipment which be carried as default bearer.Indication information can also can be an individual cells, and is as follows:
EBI (0)-EBI (N): this is carried as default bearer can to use 1 sign, and 0 is dedicated bearing.
For example, EBI (2) is 1 o'clock, identifies this and is carried as default bearer, otherwise be dedicated bearing.
UE preserves the default bearer indication, when the flow processs such as bearing resource request of follow-up initiation, carry bearing identification (LBI, Linked Bearer Identity), this is designated the corresponding bearing identification of default bearer indication, is used for determining which PDN link the bearing resource of request belongs to.Receive message such as bearing resource request when gateway device after, newly-built bearing resource is related with the PDN link that links under the bearing identification (LBI, Linked Bearer Identity), distribute bearing resource, be used for communication traffic.
410, the user sends Tracking Area Update Complete message to target mobility management network element.
It will be appreciated by those skilled in the art that, the embodiment of the invention can be all or part of flow process of above flow process, that is to say that the described process that the default bearer indication information is sent can be for issuing the whole of following network element or at least one: user equipment (UE), grouped data network gateway P-GW and gateway S-GW.
Embodiment 4
Describe below, the embodiment of the invention confirms that the method for default bearer is used for the step of handover (switching) flow process.
As shown in Figure 5, described method comprises:
501, former wireless controller sends Relocation Required message to former mobile management network element.
502, former mobile management network element sends Forward RelocationRequest message to target mobility management network element.This step is used to exchange contextual information, comprises the carrying tabulation in the contextual information.
If 503 user gateway change, the target mobile management net element sends Create Bearer Request message to (target) gateway, carries (EPS Bearer Identity, DefaultBearer Indication) in the message.In this step, the target mobile management net element is at first selected default bearer from the carrying tabulation, and the target mobile management net element carries Default Bearer Indication Indication message in message then, and whether the sign carrying is default bearer.Indication message also can be the form of individual cells.After receiving message, gateway is preserved the default bearer indication information.
504, gateway sends Create Bearer Response message to the target mobile management net element.
505, target mobility management network element sends Relocation Request message to target evolution base station.
506, target evolution base station sends Relocation RequestAcknowledge message to target mobility management network element.
507, target mobility management network element sends Forward RelocationResponse message to former mobile management network element.
508, former mobile management network element sends Handover Command message to former wireless controller.
509, target evolution base station sends Relocation Complete message to the target mobile management net element.
510, target mobility management network element sends Forward RelocationComplete message to former mobile management network element.
511, former mobile management network element sends Forward RelocationComplete Acknowledge message to target mobility management network element.
If 512 gateways do not change, target mobility management network element sends Update Bearer Request to gateway, carry prompting message in the message, prompting message can be the two tuple forms of (EPS BearerIdentity, Default Bearer Indication).In this step, the target mobile management net element is at first selected default bearer, and the target mobile management net element carries DefaultBearer Indication Indication message in message then, and whether the sign carrying is default bearer.Indication message also can be the form of individual cells.After receiving message, gateway is preserved the default bearer indication information.
If the interface between 513 gateways and the grouped data network gateway uses the GTP agreement, then gateway sends Update Bearer Request (EPS Bearer Identity, Default Bearer Indication) message to grouped data network gateway.Carrying indication information Default BearerIndication in the message is used to indicate grouped data network gateway which or which to be carried as default bearer.Indication message also can be the form of individual cells.Packet data gateway is preserved the default bearer indication, in the flow processs such as dedicated bearing foundation of follow-up initiation, carry link bearing identification (LBI, Linked Bearer Identity), this is designated the corresponding bearing identification of default bearer indication, is used for determining which PDN link newly-built carrying belongs to.After subscriber equipment receives that request message is set up in carrying, the described PDN of newly-built carrying and default bearer is linked related, be used for communication traffic.
If using, the interface between gateway and the grouped data network gateway acts on behalf of mobile Internet Protocol (PMIP, Proxy Mobile Internet Protocol), then gateway sends agent binding update (Proxy Binding Update) message and gives PDN GW.This time, gateway did not need the default bearer indication information is issued grouped data network gateway.Gateway is preserved the default bearer indication, in the flow processs such as dedicated bearing couple very much in love of follow-up initiation, carry link bearing identification (LBI, Linked Bearer Identity), this is designated the corresponding bearing identification of default bearer indication, is used for determining which PDN link newly-built carrying belongs to.After subscriber equipment received that request message is set up in carrying, the PDN link that newly-built carrying is affiliated with linking bearing identification (LBI, Linked Bearer Identity) was related, is used for communication traffic.
514, grouped data network gateway sends Update Bearer Response message to gateway.
515, gateway is replied to the affirmation that target mobility management network element sends the default bearer indication information.
If gateway does not change, gateway sends UpdateBearer Response message to target mobility management network element, if gateway changes, gateway sends Create Bearer Response message to grouped data network gateway.
516, subscriber equipment sends Tracking Area Update Request message to the target mobile management net element.
517, target mobility management network element sends Tracking Area Update Accept message to subscriber equipment, carry indication information in the message, Indication message can which be carried as default bearer for (Default Bearer Id, DefaultBearer Indication) notifying user equipment.Indication message also can be the form of individual cells.UE preserves the default bearer indication, when the flow processs such as bearing resource request of follow-up initiation, carry bearing identification (LBI, Linked Bearer Identity), this is designated the corresponding bearing identification of default bearer indication, is used for determining which PDN link the bearing resource of request belongs to.Receive message such as bearing resource request when gateway device after, newly-built bearing resource is related with the PDN link that links under the bearing identification (LBI, Linked BearerIdentity), distribute bearing resource, be used for communication traffic.
518, subscriber equipment sends Tracking Area Update Complete message to the target mobile management net element.
It will be appreciated by those skilled in the art that, the embodiment of the invention can be all or part of flow process of above flow process, that is to say that the described process that the default bearer indication information is sent can be for issuing the whole of following network element or at least one: user equipment (UE), grouped data network gateway P-GW and gateway S-GW.
The embodiment of the invention is confirmed the method for default bearer, when the former network of subscriber equipment moves to objective network, for example work as subscriber equipment and move to the EPS network from Pre-SAE networks such as GPRS/UMTS, when if objective network can not be distinguished default bearer and dedicated bearing, then from the carrying tabulation, select default bearer; And the default bearer indication information is sent to receiving equipment.Other receiving equipment such as subscriber equipment and/or gateway device can determine which is carried as default bearer, therefore can normally carry out flow processs such as PDN link release and dedicated bearing foundation, and the flow process that has solved when the different radio access style switches is set up problem.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method, can finish by the program command related hardware.The software of embodiment correspondence can be stored in a computer and can store in the medium that reads.
On the other hand, the embodiment of the invention provides a kind of Mobility Management Entity, as shown in Figure 6, comprising:
Acquiring unit is used for obtaining the carrying tabulation from the contextual information that receives;
Selected cell, default bearer is selected in the carrying tabulation that is used for obtaining from acquiring unit;
Transmitting element is used for the default bearer indication information sent at least one of following network element: user equipment (UE), grouped data network gateway P-GW and gateway S-GW.
As shown in Figure 7, the described Mobility Management Entity of the embodiment of the invention also comprises service quality QOS acquiring unit, is used to obtain the QOS parameter that the user contracts;
Described selected cell comprises the first chooser unit, is used for selecting default bearer according to described QOS parameter from the carrying tabulation.
Described selected cell also comprises the second chooser unit, is used for selecting default bearer according to transmission stream template TFT.
Described selected cell also comprises the 3rd chooser unit, is used for selecting default bearer according to user business type.
Described selected cell also comprises the 4th chooser unit, is used for selecting default bearer according to bearer types.Described the 4th chooser unit carries the background classes or the high priority interactive class of high priority as default bearer.
Embodiment of the invention Mobility Management Entity when subscriber equipment moves in the System Architecture Evolution SAE network, for example moves to the EPS network from Pre-SAE networks such as GPRS/UMTS, and selected cell is selected default bearer from the carrying tabulation; Transmitting element sends the default bearer indication information.Subscriber equipment and gateway device can determine which is carried as default bearer, therefore can normally carry out flow processs such as PDN link release and dedicated bearing foundation, when having solved the switching of different radio access style, the problem of setting up of network equipment flow processs such as gateway device.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.