Method and apparatus for seamless handover in a wireless communication network

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United States of America Patent

PATENT NO 9877252
SERIAL NO

15229412

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Abstract

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A mobile station in a Long Term Evolution (LTE) communication network transmits Packet Data Convergence Protocol (PDCP) protocol data units to a base station and the base station transfers corresponding PDCP service data units to a core network. The mobile station is configured to support handover from a source base station to a target base station. The mobile station generates new PDCP protocol data units for missing PDCP service data units, and transmits the new PDCP protocol data units to the target base station, responsive to signaling from the target base station that indicates which PDCP service data units have been successfully received at the target base station. The new PDCP protocol data units are generated using ciphering specific to the connection with the target base station, from corresponding PDCP service data units buffered at the mobile station.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)STOCKHOLM SWE STOCKHOLM

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Meyer, Michael Aachen, DE 396 5194
Peisa, Janne Espoo, FI 157 3414
Pelletier, Ghyslain Laval, CA 475 15741
Sågfors, Mats Fredrik Kyrkslätt, FI 20 54
Stattin, Magnus Upplands Vasby, SE 231 2752
Torsner, Per Johan Masaby, FI 46 383
Wiemann, Henning Aachen, DE 187 2664

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