US Patent No. 10,194,480

CORE SIGNALLING REDUCTION IN DUAL CONNECTIVITY


Patent No. 10,194,480
Issue Date January 29, 2019
Title Core Signalling Reduction In Dual Connectivity
Inventorship Indermeet Singh Gandhi, Bangalore (IN)
Assignee Cisco Technology, Inc., San Jose, CA (US)

Claim of US Patent No. 10,194,480

1. A method comprising:at a first network device configured to operate as a small cell gateway for a Master Radio Access Point (MRAP) and a Secondary Radio Access Point (SRAP), wherein the first network device presents the MRAP and the SRAP as a single access point to a perspective of a plurality of core network functions that use the first network device to access the MRAP and SRAP:
receiving, from the MRAP, a first message comprising an indication that a first bearer is to be switched from the MRAP to the SRAP, the first message comprising:
a Tunnel Endpoint Identifier TEID for the first bearer in the SRAP identifying a GTP tunnel endpoint for the first bearer within the SRAP, and
a first transport layer address of the SRAP to which downlink data for the TEID for the first bearer in the SRAP is to be sent;
receiving first downlink user plane data for a subscriber session identified by a TEID for the first bearer in the MRAP;
replacing, for the first downlink data, the TEID for the first bearer in the MRAP with the TEID for the first bearer in the SRAP; and
sending the first downlink data to the first transport layer address using the TEID for the first bearer in the SRAP.