US 11,606,731 B2 · Communication method and communications apparatus and system

Abstract

Embodiments of this application disclose a communication method and a communications apparatus, to resolve a problem that a terminal cannot quickly resume a communication connection to a secondary node. The method includes: receiving, by a first master node, a first message from a terminal, where the first message is used to request state transition of the terminal from a third mode to a connected mode; determining, by the first master node, a secondary node that serves the terminal; obtaining, by the first master node, a first security parameter, where the first security parameter is used to derive a security key used for communication between the terminal and the secondary node that serves the terminal; obtaining, by the first master node, SCG configuration information; and sending, by the first master node, a second message to the terminal, where the second message includes the first security parameter and the SCG configuration information.

Claims18

Dependent claims

A communication method, comprising:

receiving, by a first master node, a first message from a terminal to request a state transition of the terminal from a third mode to a connected mode;
determining, by the first master node, a secondary node that serves the terminal;
obtaining, by the first master node, a first security parameter to derive a security key used for communication between the terminal and the secondary node;
obtaining, by the first master node, secondary cell group (SCG) configuration information, wherein the SCG configuration information comprises at least one of a random access resource allocated to the terminal by the secondary node, information about a serving cell set of the secondary node, and indication information of a master cell of the secondary node;
and
sending, by the first master node, a second message to the terminal, wherein the second message comprises the first security parameter and the SCG configuration information.

3 more elements

A communications apparatus, comprising:

a processor;
and
a memory storing instructions, which when executed by the processor, cause the processor to perform operations, the operations comprising:
receiving a first message from a terminal to request a state transition of the terminal from a third mode to a connected mode;
determining a secondary node that serves the terminal;
obtaining a first security parameter to derive a security key used for communication between the terminal and the secondary node;
obtaining secondary cell group (SCG) configuration information, wherein the SCG configuration information comprises at least one of a random access resource allocated to the terminal by the secondary node, information about a serving cell set of the secondary node, and indication information of a master cell of the secondary node;
and
sending a second message to the terminal comprising the first security parameter and the SCG configuration information.

6 more elements

A non-transitory computer-readable storage medium storing instructions thereon for a first master node that, when executed, perform operations of:

receiving a first message from a terminal to request a state transition of the terminal from a third mode to a connected mode;
determining a secondary node that serves the terminal;
obtaining a first security parameter to derive a security key used for communication between the terminal and the secondary node;
obtaining secondary cell group (SCG) configuration information, wherein the SCG configuration information comprises at least one of a random access resource allocated to the terminal by the secondary node, information about a serving cell set of the secondary node, and indication information of a master cell of the secondary node;
and
sending a second message to the terminal, wherein the second message comprises the first security parameter and the SCG configuration information.

3 more elements

Dependencies are inferred from the claim text.

Communication method and communications apparatus and system

Life of this patent

Communication method and communications apparatus and system

Life of this patent

Abstract

Claims18