Correlation ID for local IP access
First Claim
1. A method for providing Local IP Access (LIPA), the method performed by an apparatus including a base station (BS) collocated with a local gateway (L-GW), comprising:
- receiving a request message comprising a correlation identification (ID) from a mobility management entity (MME);
determining a destination of an uplink traffic associated with the BS by using the correlation ID, the correlation ID comprising a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) based endpoint identifier of an S5 interface or a Generic Routing Encapsulation (GRE) key of the S5 interface, the S5 interface being configured at the L-GW; and
if the BS establishes a secure link with a security gateway (SeGW), the L-GW uses a same secure link, and different IP addresses are allocated to the BS and the L-GW, discriminating a data packet delivered through the secure link to the BS and the L-GW by using the different IP addresses.
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Accused Products
Abstract
The invention relates to a home cellular base station (HeNB), comprising a radio interface (RI), to communicate with a user equipment (UE), a local interface (LI), to communicate with a local gateway (L-GW) providing access to a local IP network, a user plane interface (S1-U), to communicate with a serving gateway (SGW), and a control plane interface (S1-MME), to communicate with a control node (MME). The home cellular base station (HeNB) further comprises a selection module (SelMod) set to obtain a first correlation ID for enabling a direct user plane path between the home cellular base station (HeNB) and the local gateway (L-GW), the first correlation ID being obtained via the control plane interface (S1-MME) upon each establishment of a bearer providing access to the local IP network.
The invention also relates to a control node (MME), to a home subscriber server (HSS), to a direct path enablement method, and to a PDN management method.
16 Citations
14 Claims
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1. A method for providing Local IP Access (LIPA), the method performed by an apparatus including a base station (BS) collocated with a local gateway (L-GW), comprising:
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receiving a request message comprising a correlation identification (ID) from a mobility management entity (MME); determining a destination of an uplink traffic associated with the BS by using the correlation ID, the correlation ID comprising a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) based endpoint identifier of an S5 interface or a Generic Routing Encapsulation (GRE) key of the S5 interface, the S5 interface being configured at the L-GW; and if the BS establishes a secure link with a security gateway (SeGW), the L-GW uses a same secure link, and different IP addresses are allocated to the BS and the L-GW, discriminating a data packet delivered through the secure link to the BS and the L-GW by using the different IP addresses. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus in a communication system, comprising:
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a local gateway (L-GW) providing Local IP Access (LIPA); a base station (BS) collocated with the L-GW; and a processor coupled to the L-GW and the BS, and configured to; receive a request message comprising a correlation identification (ID) from a mobility management entity (MME); determine a destination of an uplink traffic associated with the BS by using the correlation ID, the correlation ID comprising a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) based endpoint identifier of an S5 interface or a Generic Routing Encapsulation (GRE) key of the S5 interface, the S5 interface being configured at the L-GW; and if the BS establishes a secure link with a security gateway (SeGW), the L-GW uses a same secure link, and different IP addresses are allocated to the BS and the L-GW, discriminate a data packet delivered through the secure link to the BS and the L-GW by using the different IP addresses. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification