Abstract
A method for user detachment when a handover or change occurs in a heterogeneous network is provided. The method includes: a user equipment (UE) is handed over or switched from a source network to a target network; a network element on a network side determines whether to detach the UE from the source network, and if yes, the network element on the network side detaches the UE from the source network. A system and a device for user detachment when a handover or change occurs in a heterogeneous network, and another method for user detachment when a handover or change occurs in a heterogeneous network are also provided.
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Specification Information
Specification Information
Technologies
Family Information
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Technologies
Mobility and handover
Product
Use Cases
Services
Claim
1. A method comprising:
creating, by a packet data network gateway (PDN GW), bearer resources of a user equipment (UE) in a 3GPP network,
when the UE accesses the 3GPP network;
receiving, by the PDN GW, a message from a non-3GPP network when a handover from the 3GPP network to the non-3GPP network occurs;
setting, by the PDN GW, a cause information element (IE) to represent that the UE accessing RAT is changed from a 3GPP network to a non-3GPP network; and
sending, by the PDN GW, a delete bearer request carrying the cause IE to a serving gateway (GW).
2. The method according to claim 1, further comprising:
receiving, by the serving GW, the delete bearer request; and
sending, by the serving GW, the delete bearer request to a mobility management entity (MME).
3. The method according to claim 1, further comprising:
receiving, by the MME, the delete bearer request;
deleting, by the MME, a bearer resource of the UE according to the delete bearer request; and
deleting, by the MME, a mobility management (MM) context of the UE.
4. The method according to claim 1, wherein the message from the non-3GPP network is a proxy binding update message or a binding update message.
5. The device according to claim 4, wherein the message from the non-3GPP network is a proxy binding update message or a binding update message.
6. A system, comprising a packet data network gateway (PDN GW), a serving gateway (GW) and a mobility management entity (MME), wherein:
the PDN GW is adapted to create bearer resources of a user equipment (UE) in a 3GPP network when the UE accesses the 3GPP network,
receive a message from a non-3GPP network when a handover from the 3GPP network to the non-3GPP network occurs,
set a cause information element (IE) to represent that the UE accessing RAT is changed from a 3GPP network to a non-3GPP network, and
send a delete bearer request carrying the cause IE to the servingGW; and
the serving GW is adapted to send the delete bearer request to the MME.
7. The system according to claim 6, the MME is adapted to delete a bearer resource of the UE according to the delete bearer request, and delete a mobility management (MM) context of the UE.
8. The system according to claim 6, wherein the message from the non-3GPP network is a proxy binding update message or a binding update message.
9. A device, comprising:
a memory storage comprising instructions; and
one or more processors in communication with the memory,
wherein the one or more processors execute the instructions to:
create bearer resources of a user equipment (UE) in a 3GPP network,
when the UE accesses the 3GPP network;
receive a message from a non-3GPP network,
when a handover from the 3GPP network to the non-3GPP network occurs;
set a cause information element (IE) to represent that UE accessing RAT is changed from a 3GPP network to a non-3GPP network; and
send a delete bearer request carrying the cause IE to a serving gateway (GW).
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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