US 11,606,306 B2 · Packet transmission method and apparatus

Abstract

Various embodiments provide a packet transmission method and an apparatus. In those embodiments, a first device supports a first protocol layer, and replicates a packet at the first protocol layer. A second device supports a second protocol layer, and deduplicates the packet at the second protocol layer. When receiving a first packet, a first access device converts a sequence number of the first protocol layer in the first packet into a sequence number of the second protocol layer, and then sends, to the second device, a second packet that carries the sequence number of the second protocol layer and a data packet of the first packet. For example, if the first access network device receives two packets having same data packets, the first access network device separately coverts sequence numbers in the two packets without performing operations of first deduplicating and then replicating the packet.

Claims18

Dependent claims

A method comprising:

receiving, by a first access network device, a first packet that is from a first device, wherein the first packet comprises a sequence number of a first protocol layer, a data packet of a first service flow, and a quality of service flow identifier (QFI) that is used to identify the first service flow;
when the first access network device determines that conversion of the sequence number of the first protocol layer is to be performed on the first packet, determining, by the first access network device based on the sequence number of the first protocol layer of the first packet and the QFI, a sequence number that is of a second protocol layer and that corresponds to the data packet wherein, when replicating a packet at a SDAP layer, the sequence number of the second protocol layer is based on the QFI and an SDAP sequence number;
and
sending, by the first access network device, a second packet to a second device, wherein the second packet comprises the sequence number of the second protocol layer and the data packet.

1 more element

An apparatus comprising:

a receiving unit, configured to receive a first packet that is from a first device, wherein the first packet comprises a sequence number of a first protocol layer, a data packet of a first service flow, and a quality of service flow identifier (QFI) that is used to identify the first service flow;
a processing unit, configured to:
when it is determined that conversion of the sequence number of the first protocol layer is to be performed on the first packet, determine, based on the sequence number of the first protocol layer of the first packet and the QFI, a sequence number that is of a second protocol layer and that corresponds to the data packet, wherein, when replicating a packet at a SDAP layer, the sequence number of the second protocol layer is based on the QFI and an SDAP sequence number;
and
a sending unit, configured to send a second packet to a second device, wherein the second packet comprises the sequence number of the second protocol layer and the data packet.

2 more elements

Dependencies are inferred from the claim text.

Packet transmission method and apparatus

Life of this patent

Packet transmission method and apparatus

Life of this patent

Abstract

Claims18