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US 10,484,859 B2Granted
User plane gateway updating method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsXiaoqiang Qiao, Yan Li
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a user plane gateway updating method and apparatus, so as to resolve a prior-art technical problem that GW-U updating cannot be implemented when neither an MME nor a GW-C changes. Embodiments of the present disclosure provide four different solutions, for purposes of being compatible with an existing implementation mechanism and improving system efficiency, when a UE performs TAU, an EPS system of a distributed gateway can select, according to a current location of the UE, a best GW-U and re-establish a PDN connection, thereby optimizing a data transmission path and ensuring communication performance.
Claims12
A user plane gateway updating method, comprising:
- sending, by a control plane gateway to a mobility management entity, a tracking area (TA) identifier list corresponding to a first user plane gateway in a process in which a first packet data network (PDN) connection between a user equipment (UE) and the first user plane gateway is being established;
- receiving, by the control plane gateway, a notification message from the mobility management entity for notifying the control plane gateway that a TA identifier of a TA in which the UE is located is not in the TA identifier list;
- and
- sending, by the control plane gateway to the mobility management entity, a request message of re-establishing a PDN connection, wherein the request message comprises a parameter for indicating establishment of a second PDN connection;
- wherein the second PDN connection is a PDN connection between the UE and a second user plane gateway, and the second user plane gateway is selected by the control plane gateway.
2 more elements
A user plane gateway updating apparatus, comprising:
- a processor;
- a memory coupled to the processor, the memory comprising instructions that, when executed by the processor, cause the user plane gateway updating apparatus to:
- send, by the control plane gateway updating apparatus to a mobility management entity, a tracking area (TA) identifier list corresponding to a first user plane gateway in a process in which a first packet data network (PDN) connection between a user equipment (UE) and the first user plane gateway is being established;
- receive, by the control plane gateway updating apparatus, a notification message from the mobility management entity for notifying the control plane gateway that a TA identifier of a TA in which the UE is located is not in the TA identifier list;
- and
- send, by the control plane gateway updating apparatus to the mobility management entity, a request message of re-establishing a PDN connection,
- wherein the request message comprises a parameter for indicating establishment of a second PDN connection, and
- wherein the second PDN connection is a PDN connection between the UE and a second user plane gateway, and the second user plane gateway is selected by the control plane gateway.
5 more elements
A communications system, comprising:
- a user plane gateway updating apparatus and a mobility management entity;
- wherein the user plane gateway updating apparatus, configured to:
- send, to a mobility management entity, a tracking area (TA) identifier list corresponding to a first user plane gateway in a process in which a first packet data network (PDN) connection between a user equipment (UE) and the first user plane gateway is being established;
- receive a notification message from the mobility management entity for notifying the control plane gateway that a TA identifier of a TA in which the UE is located is not in the TA identifier list;
- and
- send, to the mobility management entity, a request message of re-establishing a PDN connection,
- wherein the request message comprises a parameter for indicating establishment of a second PDN connection,
- wherein the second PDN connection is a PDN connection between the UE and a second user plane gateway, and the second user plane gateway is selected by the control plane gateway, and
- wherein the mobility management entity, configured to:
- receive the tracking area (TA) identifier list corresponding to the first user plane gateway from the user plane gateway updating apparatus;
- send the notification message to the control plane gateway updating apparatus;
- and
- receive the request message of re-establishing a PDN connection from the control plane gateway updating apparatus.
10 more elements
Dependencies are inferred from the claim text.