User equipment, target access node and methods in a wireless communications network for handling packet data convergence protocol (PDCP) service data units (SDU) when performing a dual active protocol stack (DAPS) handover

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12200478
APP PUB NO 20220361060A1
SERIAL NO

17633248

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Abstract

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The present disclosure relates to telecommunications. In one of its aspects, the disclosure concerns a method performed by a User Equipment for handling Packet Data Convergence Protocol (PDCP) Service Data Units (SDUs) when performing a Dual Active Protocol Stack (DAPS) handover of at least one radio bearer from a source access node to a target access node in a wireless communications network. The method comprises obtaining a trigger to perform the handover and establishing a radio connection for the at least one radio bearer with the target access node. An uplink transmission of PDCP SDUs is switched from the source to the target access node over the established radio connection. A radio connection with the source access node is released and a PDCP status report is transmitted to the target access node for each configured radio bearer. The respective PDCP status report indicates PDCP Sequence Numbers (SNs) of missing PDCP SDUs.

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First Claim

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Patent Owner(s)

  • TELEFONAKTIEBOLAGET LM ERICSSON ( PUBL)

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ohlsson, Oscar Bromma, SE 86 290
Persson, Claes-Göran Mjölby, SE 43 186
Rune, Johan Lidingö, SE 458 8448
Wallentin, Pontus Linköping, SE 126 2666

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