Invention Grant
- Patent Title: Inter-rat handover control using empty GRE packets
- Patent Title (中): 使用空GRE分组的鼠际间切换控制
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Application No.: US13111141Application Date: 2011-05-19
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Publication No.: US08902852B2Publication Date: 2014-12-02
- Inventor: Suraj Jaiswal , Renhua Wen
- Applicant: Suraj Jaiswal , Renhua Wen
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (Publ)
- Current Assignee Address: SE Stockholm
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04W36/00 ; H04W36/02 ; H04W88/16 ; H04W36/14
Abstract:
Empty GRE packets are used to provide in-order delivery of data packets for a session to a UE during inter-RAT handover. In particular, an empty GRE packet sent from a source gateway in a source RAN to a target gateway in a target RAN indicates to the target gateway the end of forwarded data packets from the source gateway. The target gateway sends data packets received from the source gateway to the UE until the empty GRE packet is received. Upon receipt of the empty GRE packet, the target gateway begins sending data packets received directly from a home network gateway to the UE.
Public/Granted literature
- US20120294277A1 INTER-RAT HANDOVER CONTROL USING EMPTY GRE PACKETS Public/Granted day:2012-11-22
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