Patent ID: 11956667
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A communication method carried out by a receiving device, the method comprising:
sending first feedback information to a sending device that indicates to the sending device to start to transmit a to-be-sent data packet of which the header is compressed;
receiving, after the sending, a first data packet that is a data packet comprising an ethernet header;
determining that the first data packet has a compressed header including a compressed field;
decompressing, in accordance with the determining, the compressed field of the compressed header of the first data packet to provide a decompressed field of the compressed header, wherein the decompressing is performed by a header decompression function operating at a packet data convergence protocol (PDCP) layer, and wherein the decompressing is performed according to a preset method, wherein the that comprises:
adding complete content of a compressed field to the compressed header of the first data packet; or
replacing a context identifier of the compressed header of the first data packet with the complete content of the compressed field,
wherein the compressed field comprises a destination address field, a source address field and a length/type field.