Local forwarding method and system for user plane data, and local gateway
First Claim
1. A local switching method for user plane data, comprising:
- deploying a Local Gateway (LGW) in a network;
after allocating an IP address to a User Equipment (UE) or releasing an IP address of the UE, a public data network gateway notifying the allocation or release of the IP address of the UE to the LGW to which the UE belongs, and the LGW registering or deregistering the IP address of the UE; and
after receiving an IP data packet forwarded by a source base station which is transmitted by a source UE to a target UE, the LGW judging whether the IP address of the target UE is registered on the LGW, and if so, transmitting the IP data packet to a target base station to which the target UE is connected.
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Abstract
A local switching method for user plane data includes: after being triggered, a level 1 data node judging whether a direct tunnel can be established for a source user equipment and a target user equipment, and if so, establishing a direct tunnel between a source level 2 data node and a target level 2 data node for the source user equipment and the target user equipment; after receiving an IP data packet transmitted by the source user equipment to the target user equipment, the source level 2 data node forwarding the IP data packet to the target level 2 data node through the direct tunnel between the source level 2 data node and the target level 2 data node, so that the target level 2 data node forwards the IP data packet to the target user equipment.
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Citations
15 Claims
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1. A local switching method for user plane data, comprising:
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deploying a Local Gateway (LGW) in a network; after allocating an IP address to a User Equipment (UE) or releasing an IP address of the UE, a public data network gateway notifying the allocation or release of the IP address of the UE to the LGW to which the UE belongs, and the LGW registering or deregistering the IP address of the UE; and after receiving an IP data packet forwarded by a source base station which is transmitted by a source UE to a target UE, the LGW judging whether the IP address of the target UE is registered on the LGW, and if so, transmitting the IP data packet to a target base station to which the target UE is connected. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A Local Gateway (LGW), comprising:
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an IP address management unit, configured to register or deregister an IP address of a User equipment (UE) after receiving a notification that a public data network gateway allocates an IP address to the UE or releases the IP address of the UE; and a data forwarding unit, configured to judge whether an IP address of a target UE is registered on the LGW after receiving an IP data packet forwarded by a source base station which is transmitted by a source UE to the target UE, and if so, transmit the IP data packet to a target base station to which the target UE is connected. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A local switching system for user plane data, comprising a Local Gateway (LGW) and a public data network gateway, wherein,
the public data network gateway is configured to notify an allocation or release of an IP address of a User Equipment (UE) to the LGW to which the UE belongs after allocating an IP address to the UE or releasing the IP address of the UE; -
the LGW comprises; an IP address management unit, configured to register or deregister the IP address of the UE after receiving the notification that the public data network gateway allocates the IP address to the UE or releases the IP address of the UE; and a data forwarding unit, configured to judge whether an IP address of a target UE is registered on the LGW after receiving an IP data packet forwarded by a source base station which is transmitted by a source UE to the target UE, and if so, transmit the IP data packet to a target base station to which the target UE is connected. - View Dependent Claims (14, 15)
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Specification