Power saving method and device thereof in internet-of-things
AssigneeDialog Semiconductor Korea Inc.
InventorChang Hawn Park
Life of this patent
Estimating the term…
Abstract
The power saving method includes storing current connection information of an electronic device corresponding to an access point; disconnecting power supply to designated hardware to form a disconnection state after storing the current connection information; determining whether the disconnection state conforms to a release condition; and connecting the power supply to the designated hardware if the disconnection state conforms to the release condition. The connecting of the power supply to the designated hardware includes loading final connection information of the electronic device corresponding to the access point prior to disconnecting the power supply, and utilizing the final connection information to guide the electronic device to connect the access point.
Claims9
A power saving method of an Internet-of-Things electronic device, comprising:
- storing in a nonvolatile memory connection information of the electronic device corresponding to an access point which is currently connected to the electronic device in an active mode;
- in a power saving mode,
- disconnecting a power supply from designated hardware including a main CPU while maintaining power of a real time clock timer to form a disconnection state;
- determining whether the disconnection state conforms to a release condition;
- and
- switching the power saving mode to the active mode if the disconnection state conforms to the release condition;
- wherein switching the power saving mode to the active mode, comprises:
- connecting the power supply to the designated hardware including the main CPU;
- utilizing the connection information stored in the nonvolatile memory to guide the electronic device to connect the access point;
- wherein the main CPU does not perform wireless network connecting processes with the access point when switching the power saving mode to the active mode;
- and
- wherein the release condition comprises a condition of indicating a service indication message for a beacon frame received from the access point, or a condition of sending a service indication message containing a data frame which is to be transmitted from the assess point to the electronic device, or a condition of passing a predetermined period of the disconnection state.
An electronic device, comprises:
- a communication unit for performing communication with an access point;
- a nonvolatile memory unit;
- a first control portion, after the electronic device performs a power saving mode, storing in the nonvolatile memory unit connection information of the electronic device corresponding to the access point which is currently connected to the electronic device, and then disconnecting a power supply from designated hardware to form a disconnection state, the designated hardware including the first control portion;
- a second control portion, which is not included in the designated hardware;
- when the disconnection state conforms to a release condition, the second control portion connects the power supply to the designated hardware, and the first control portion utilizes the connection information stored in the nonvolatile memory to guide the electronic device to connect the access point without wireless network connecting processes with the access point;
- wherein the first control portion includes a main CPU;
- and
- wherein the release condition comprises a condition of indicating a service indication message for a beacon frame received from the access point, or a condition of sending a service indication message containing a data frame which is to be transmitted from the assess point to the electronic device, or a condition of passing a predetermined period of the disconnection state.
Dependencies are inferred from the claim text.