Back to results
US 11,895,722 B2Granted
Communication method in multi-rat dual connectivity and communications apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsWenjie Peng, Guanchen Li, Xin Xiong, Mingzeng Dai
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to communication methods in multi-rat dual connectivity, apparatus, and systems. In one example method, when a packet data convergence protocol sequence number (PDCP SN) length of a bearer is changed, a secondary node (SN) sends a PDCP SN length change indication to a master node (MN).
Claims14
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.
7 more elements
An apparatus for a terminal, comprising at least one processor, wherein the at least one processor is coupled to a memory storing executable instructions that, when executed by the at least one processor, cause the terminal to perform operations comprising:
- receiving first configuration information of a first bearer from a secondary node through a master node, wherein the first configuration information comprises configuration information for releasing and adding, by the terminal, a packet data convergence protocol (PDCP) entity of the first bearer terminated at the secondary node, wherein the first configuration information further comprises configuration information for releasing and adding a radio link control protocol layer (RLC) entity of the first bearer;
- and the configuration information for releasing and adding the RLC entity comprises configuration information for releasing the RLC entity corresponding to a bearer identifier of the first bearer and configuration information for adding the RLC entity corresponding to the bearer identifier;
- and
- configuring the first bearer based on the first configuration information, wherein the terminal connects to both the master node and the secondary node;
- and wherein:
- the configuration information for releasing and adding a PDCP entity comprises configuration information for releasing a PDCP entity and configuration information for adding a PDCP entity, and the configuration information for releasing a PDCP entity and the configuration information for adding a PDCP entity include a same bearer identifier;
- and wherein configuring the first bearer based on the first configuration information comprises:
- releasing a PDCP entity of the first bearer, and adding a PDCP entity of the first bearer, based on the configuration information for releasing and adding a PDCP entity of the first bearer, wherein a PDCP sequence number (SN) length of the released PDCP entity is different from a PDCP SN length of the added PDCP entity.
5 more elements
A communication method, comprising:
- receiving, by a terminal, first configuration information of a first bearer from a secondary node through a master node, wherein the first configuration information comprises configuration information for releasing and adding, by the terminal, a packet data convergence protocol (PDCP) entity of the first bearer terminated at the secondary node, wherein the first configuration information further comprises configuration information for releasing and adding a radio link control protocol layer (RLC) entity of the first bearer;
- and the configuration information for releasing and adding the RLC entity comprises configuration information for releasing the RLC entity corresponding to a bearer identifier of the first bearer and configuration information for adding the RLC entity corresponding to the bearer identifier;
- and
- configuring, by the terminal, the first bearer based on the first configuration information, wherein the terminal connects to both the master node and the secondary node;
- and wherein:
- the configuration information for releasing and adding a PDCP entity comprises configuration information for releasing a PDCP entity and configuration information for adding a PDCP entity, and the configuration information for releasing a PDCP entity and the configuration information for adding a PDCP entity include a same bearer identifier;
- and wherein configuring the first bearer based on the first configuration information comprises:
- releasing, by the terminal, a PDCP entity of the first bearer, and adding a PDCP entity of the first bearer, based on the configuration information for releasing and adding a PDCP entity of the first bearer, wherein a PDCP sequence number (SN) length of the released PDCP entity is different from a PDCP SN length of the added PDCP entity.
5 more elements
Dependencies are inferred from the claim text.