COMMUNICATION METHOD AND APPARATUS

WIPO Patent Application WO/2022/082680

A1

The present application discloses a communication method and apparatus, which enable an access network device to determine a PDCP SN of a PDCP PDU in a second data packet according to a first SN in a first data packet from a core network device. When different access network devices all determine the respective corresponding PDCP SNs according to first SNs in first data packets, the PDCP SNs determined by the different access network devices for the data packets with the same first SN from the core network device are consistent. In this way, when UE switches between different access network devices, the transmission progress of MBS services of two access network devices can be determined according to the transmission situations of the PDCP SNs of the different access network devices, and data packet loss of the MBS services is further avoided by means of a data forwarding mechanism, ensuring the continuity of MBS service transmission.

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XU BIN (CN)
LI BINGZHAO (CN)
CAO ZHENZHEN (CN)
WANG YAN (CN)

PCT/CN2020/123009

April 28, 2022

October 22, 2020

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HUAWEI TECH CO LTD (CN)

H04L12/851

CN110798408A	2020-02-14
CN110493823A	2019-11-22
CN108924876A	2018-11-30
US20190253938A1	2019-08-15

TDIP & PARTNERS (CN)

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