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US 9,961,045 B2Granted
Service path changing method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsJin Zhang, Hai Liu
Life of this patent
Estimating the term…
Abstract
The present disclosure a service path changing method and apparatus, including: determining, by an MME, that a UE needs to be handed over from a first AG to a second AG; and instructing, by the MME, the UE to notify, according to bearer information used to perform service transmission between the second AG and the UE and assigned by the second AG, a service peer end that an IP address of the UE is changed from a first IP address assigned by the first AG to a second IP address assigned by the second AG. It is not required to add the first IP address assigned to the UE by the first AG into the IP address segment maintained by the second AG, and it is unnecessary to change routing information of a router in a PDN to route downlink data of the UE to the second AG.
Claims15
A user equipment (UE), comprising:
- a processor, a transmitter coupled with the processor, and a receiver wherein:
- the processor is configured to determine that the user equipment needs to be handed over from a first access gateway (AG) to a second AG;
- the transmitter is configured to transmit to a service peer end, according to a result determined by the processor, a notification indicating that an Internet Protocol (IP) address of the UE changed from a first IP address assigned by the first AG to a second IP address assigned by the second AG;
- the receiver is configured to receive bearer information used to perform service transmission between the second AG and the UE, and the second IP address that is assigned by the second AG and sent by a mobility management entity (MME);
- and
- the transmitter is further configured to transmit to the service peer end, according to the bearer information, a notification of the second IP address assigned by the second AG and the first IP address assigned by the first AG.
3 more elements
A service path changing method, wherein the method comprises:
- determining, by a mobility management entity (MME), that a user equipment (UE) needs to be handed over from a first access gateway (AG) to a second AG;
- and
- instructing, by the MME, the UE to notify a service peer end, according to bearer information used to perform service transmission between the second AG and the UE and assigned by the second AG, an IP address of the UE is changed from a first IP address assigned by the first AG to a second IP address assigned by the second AG,
- wherein after the determining, by the MME, that the UE needs to be handed over from the first AG to the second AG, and before the instructing, by the MME, the UE to notify the service peer end that the IP address of the UE is changed from the first IP address to the second IP address, the method further comprises:
- sending, by the MME to the second AG, a session creation request message that is for the UE and used to request to establish a session connection between the second AG and the UE, and receiving a session creation response message sent by the second AG, and
- wherein the session creation response message comprises the bearer information and the second IP address that are assigned by the second AG, and the instructing, by the MME, the UE to notify, according to bearer information, the service peer end that the IP address of the UE is changed from the first IP address to the second IP address comprises:
- sending, by the MME, the bearer information and the second IP address to the UE, and instructing the UE to notify, according to the bearer information, the service peer end of the second IP address and the first IP address that is assigned by the first AG.
4 more elements
A service path changing method, wherein the method comprises:
- determining, by a mobility management entity (MME), that a user equipment (UE) needs to be handed over from a first access gateway (AG) to a second AG;
- and
- instructing, by the MME, the UE to notify a service peer end, according to bearer information used to perform service transmission between the second AG and the UE and assigned by the second AG, an IP address of the UE is changed from a first IP address assigned by the first AG to a second IP address assigned by the second AG,
- wherein after the determining, by the MME, that the UE needs to be handed over from the first AG to the second AG, and before the instructing, by the MME, the UE to notify the service peer end that the IP address of the UE is changed from the first IP address to the second IP address, the method further comprises:
- sending, by the MME to the second AG, a session creation request message that is for the UE and used to request to establish a session connection between the second AG and the UE, and receiving a session creation response message sent by the second AG, and
- wherein the session creation response message comprises the bearer information assigned by the second AG, and the session creation response message comprises the bearer information, the instructing, by the MME, the UE to notify, according to the bearer information, the service peer end that the IP address of the UE is changed from the first IP address to the second IP address comprises:
- sending, by the MME, the bearer information to the UE, and instructing the UE to request, according to the bearer information, to acquire the second IP address from the second AG, and to notify the service peer end of the second IP address and the first IP address that is assigned by the first AG.
4 more elements
A service path changing method, wherein the method comprises:
- determining, by a user equipment (UE) that the UE needs to be handed over from a first access gateway (AG) to a second AG;
- notifying, by the UE, a service peer end that an IP address of the UE is changed from a first IP address assigned by the first AG to a second IP address assigned by the second AG;
- and
- receiving, by the UE, bearer information used to perform service transmission between the second AG and the UE and the second IP address that are assigned by the second AG and sent by a mobility management entity (MME),
- wherein the notifying, by the UE, the service peer end that the IP address of the UE is changed from the first IP address to the second IP address comprises:
- notifying, by the UE according to the bearer information, the service peer end of the second IP address assigned by the second AG and the first IP address assigned by the first AG.
3 more elements
Dependencies are inferred from the claim text.