Patent ID: 11895722
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A communication system, comprising a first communications apparatus and a second communications apparatus, wherein the first communications apparatus is a master node or a centralized unit of the master node, and the second communications apparatus is a secondary node or a centralized unit of the secondary node, wherein the master node and the secondary node are both connected to a terminal, and wherein the second communications apparatus is configured to:
generate first packet data convergence protocol sequence number (PDCP SN) length information, wherein the first PDCP SN length information indicates a first PDCP SN length of a first bearer terminated at the secondary node, wherein the first PDCP SN length is determined by the second communications apparatus, and a PDCP SN length of the first bearer is a second PDCP SN length before the first PDCP SN length is determined by the second communications apparatus, and the first PDCP SN length is different from the second PDCP SN length, and wherein the first PDCP SN length indicates a number of bits occupied by a PDCP SN in a PDCP packet, and wherein the first bearer is a Master Cell Group (MCG) bearer terminated at the secondary node or a split bearer terminated at the secondary node; and
generate configuration information for releasing and adding a packet data convergence protocol (PDCP) entity of the first bearer; and
send the first PDCP SN length information and first configuration information to the first communications apparatus, wherein the first configuration information comprises the configuration information for releasing and adding the PDCP entity of the first bearer; and
wherein the first communications apparatus is configured to:
receive the first PDCP SN length information and the first configuration information from the second communications apparatus;
obtain the first PDCP SN length indicated by the first PDCP SN length information;
send the first configuration information and second configuration information of the first bearer to the terminal, wherein the first PDCP SN length is different from the second PDCP SN length, wherein the second configuration information of the first bearer comprises configuration information for releasing and adding a radio link control (RLC) entity of the first bearer.