System and method for enabling discovery of local service availability in local cellular coverage

摘要

LIPA PDN Connectivity indicates a PDP Context (in the case of a GERAN or UTRAN femto cell connected to a GPRS core network) or a PDN Connection (in the case of an E-UTRAN femto cell connected to a GPRS core network) that gives access to services located in the local IP network of the femto cell subsystem. SIPTO PDN Connectivity indicates a PDP Context or PDN Connection that allows offload of selected types of IP traffic (e.g. internet traffic) towards a defined IP network close to the UE's point of attachment to the access network. Remote PDN Connectivity indicates a regular PDP Context or PDN Connection established neither according to LIPA PDN Connectivity nor SIPTO PDN Connectivity. Systems, devices and methods are described herein that enable the identification of the type of connectivity available to a UE and enable session continuity for local cellular coverage.

主权项

1. A method for use in a user equipment (UE) comprising:
receiving an indication of a type of connectivity provided in a telecommunication cell, the connectivity defining a connection using a Local Packet Gateway via a nodeB serving the telecommunication cell; wherein the indication of the type of connectivity provided indicates one of: local internet protocol access (LIPA) connectivity; selected internet protocol traffic offload (SIPTO) connectivity; or remote connectivity; wherein receiving the indication of a type of connectivity provided occurs in a non-access stratum (NAS) functional layer; wherein receiving the indication of a type of connectivity comprises receiving a message, which is at least one of an ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message; or an ACTIVATE PDP CONTEXT ACCEPT message; and wherein receiving the indication of a type of connectivity occurs during one of: when requesting an additional packet data protocol (PDP) context; or when requesting a packet data network (PDN) connection.