Robust header compression handling during packet data convergence protocol re-establishment

An apparatus for wireless communication, comprising:

• a processing system configured to:
• re-establish a packet data convergence protocol (PDCP) entity;
• reset a robust header compression (ROHC) context;
• receive packet retransmissions having header compression based on the ROHC;
• and
• perform decompression of the packet retransmissions, wherein:
• up to decompression of a final lost packet before the PDCP entity was re-established, the processing system is configured to discard duplicate packets after performing the decompression of the packet retransmissions;
• and
• after decompression of the final lost packet, the processing system is configured to discard the duplicate packets before performing the decompression.

A non-transitory computer-readable storage medium comprising code stored thereon that, when executed by an apparatus, causes the apparatus to:

• re-establish a packet data convergence protocol (PDCP) entity;
• reset a robust header compression (ROHC) context;
• receive packet retransmissions having header compression based on the ROHC;
• and
• perform decompression of the packet retransmissions, wherein:
• up to decompression of a final lost packet before the PDCP entity was re- established, the code causes the apparatus to discard duplicate packets after performing the decompression of the packet retransmissions;
• and
• after decompression of the final lost packet, the code causes the apparatus to discard the duplicate packets before performing the decompression.