US Patent No. 9,526,123

LOCAL FORWARDING METHOD AND SYSTEM FOR USER PLANE DATA, AND LOCAL GATEWAY


Patent No. 9,526,123
Issue Date December 20, 2016
Title Local Forwarding Method And System For User Plane Data, And Local Gateway
Inventorship Zhijun Li, Shenzhen (CN)
Zhenhua Xie, Shenzhen (CN)
Assignee ZTE Corporation, Shenzhen, Guangdong Province (CN)

Claim of US Patent No. 9,526,123

1. A local switching method for user plane data, comprising:
after being triggered, a level 1 data node judging whether a direct tunnel can be established for a source User Equipment
(UE) and a target UE, and if so, establishing a direct tunnel between a source level 2 data node and a target level 2 data
node for the source UE and the target UE; and

after receiving an IP data packet transmitted by the source UE to the target UE, 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 UE;

wherein, whether a direct tunnel can be established for the source UE and the target UE is judged according to the following
factor:

judging according to an identity and/or IP address of the source UE and an identity and/or IP address of the target UE.