Patent ID: 11902844
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A device comprising:
at least one processor; and
at least one memory, the at least one memory comprising instructions that when executed by the at least one processor, cause the device to:
send, by a second device, a first message to a first device when a cell handover or a cell change occurs, wherein the first message comprises a first indication and a second indication,
the first indication instructing the first device to perform at least one of the following operations: a data recovery, a discarding of a data packet, or a delivery of a PDU corresponding to a first Service Data Unit (SDU) to a Radio Link Control (RLC) entity,
wherein the first message is received when a cell handover or cell change occurs,
wherein a Packet Data Convergence Protocol (PDCP) entity uses a key used before the cell handover or the cell change, and
wherein when the PDCP entity is a PDCP entity of a signaling radio bearer (SRB), the first message instructs the first device to discard the data packet, and
the second indication instructing the first device to re-establish the RLC entity.