Data processing method and apparatus, and computer storage medium

A first 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:
• receive a first message from a second device, 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 protocol data unit (PDU) corresponding to a first Service Data Unit (SDU) to a Radio Link Control (RLC) entity, and the second indication instructing the first device to re-establish the 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 a cell handover or a cell change when the cell handover or the cell change occurs, 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;
• perform, based on the first indication, the data recovery, the discarding of the data packet, or the delivery of the PDU corresponding to the first SDU to the RLC entity;
• and
• re-establish, based on the second indication, the RLC entity.

A method comprising:

• sending, 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 protocol data unit (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.

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.