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US 12,603,743 B2Granted
Clock synchronization method and related apparatus
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsZhe Fu, Qianxi Lu
Life of this patent
Estimating the term…
Abstract
Disclosed are a clock synchronization method and a related apparatus. The method comprises: a terminal receiving first clock information; determining a specific cell according to the first clock information; and taking the specific cell as a clock reference point, and performing clock synchronization according to the first clock information.
Claims3
A method for clock synchronization, applied to a terminal connected to both a master node and a secondary node, the method comprising:
- receiving at least one piece of clock information, wherein the at least one piece of clock information comprises first clock information;
- determining by the terminal whether the first clock information is generated by the master node or by the secondary node, comprising:
- receiving, by the terminal, first information indicating a position of the first clock information, determining by the terminal that the first clock information is generated by the secondary node in a case where it is determined according to the first information that the position of the first clock information is within a container, and determining by the terminal that the first clock information is generated by the master node in a case where it is determined according to the first information that the first clock information is outside the container;
- in response to determining that the first clock information is generated by the master node, determining by the terminal that a primary cell of the master node is used as a clock reference point for clock synchronization with the master node;
- in response to determining that the first clock information is generated by the secondary node, determining by the terminal that a primary secondary cell of the secondary node is used as the clock reference point for the clock synchronization with the master node in a case where the first clock information is sent by the master node or sent by the secondary node;
- and
- based on the clock reference point, performing clock synchronization with the master node according to the first clock information,
- wherein the receiving the at least one piece of clock information comprises receiving a dedicated Radio Resource Control (RRC) message sent by a cell corresponding to the master node, and a type of the dedicated RRC message is a downlink information transmission message, and
- wherein each of the at least one piece of clock information comprises at least one of the following information:
- reference clock information, a time, an uncertainty index, a time information type, and a reference system frame number.
7 more elements
A terminal device, connected to both a master node and a secondary node, the terminal device comprising:
- a transceiver;
- a processor;
- and
- a memory configured to store a computer program executable by the processor,
- wherein the transceiver is configured to receive at least one piece of clock information, wherein the at least one piece of clock information comprises first clock information,
- the processor is configured to:
- determine whether the first clock information is generated by the master node or by the secondary node, comprising:
- receiving first information indicating a position of the first clock information, determining that the first clock information is generated by the secondary node in a case where it is determined according to the first information that the position of the first clock information is within a container, and determining that the first clock information is generated by the master node in a case where it is determined according to the first information that the first clock information is outside the container;
- in response to determining that the first clock information is generated by the master node, determine a primary cell of the master node is used as a clock reference point for clock synchronization with the master node;
- in response to determining that the first clock information is generated by the secondary node, determine that a primary secondary cell of the secondary node is used as the clock reference point for the clock synchronization with the master node in a case where the first clock information is sent by the master node or sent by the secondary node;
- and
- perform clock synchronization with the master node according to the first clock information based on the clock reference point,
- wherein the transceiver is configured to receive a dedicated Radio Resource Control (RRC) message sent by a cell corresponding to the master node, and a type of the dedicated RRC message is a downlink information transmission message, and
- wherein each of the at least one piece of clock information comprises at least one of the following information:
- reference clock information, a time, an uncertainty index, a time information type, and a reference system frame number.
12 more elements
A master node, wherein the master node is connected to a terminal and the terminal is connected to a secondary node, the master node comprising:
- a transceiver;
- a processor;
- and
- a memory configured to store a computer program executable by the processor,
- wherein the transceiver is configured to send first clock information to the terminal, wherein the first clock information is used by the terminal to perform the following operations:
- determining whether the first clock information is generated by the master node or by the secondary node, comprising:
- receiving first information indicating a position of the first clock information, determining that the first clock information is generated by the secondary node in a case where it is determined according to the first information that the position of the first clock information is within a container, and determining that the first clock information is generated by the master node in a case where it is determined according to the first information that the first clock information is outside the container;
- in response to determining that the first clock information is generated by the master node, determining that a primary cell of the master node is used as a clock reference point for clock synchronization with the master node;
- in response to determining that the first clock information is generated by the secondary node, determining that a primary secondary cell of the secondary node is used as the clock reference point for the clock synchronization with the master node;
- and
- based on the clock reference point, performing clock synchronization with the master node according to the first clock information,
- wherein the transceiver is configured to send a dedicated Radio Resource Control (RRC) message to the terminal through the cell corresponding to the master node, and a type of the dedicated RRC message is a downlink information transmission message, and
- wherein each of the at least one piece of clock information comprises at least one of the following information:
- reference clock information, a time, an uncertainty index, a time information type, and a reference system frame number.
11 more elements
Dependencies are inferred from the claim text.