Provided is a method and apparatus for discontinuously transmitting/receiving packets for low-power consumption of a terminal in a cellular system for packet transmission. The present invention provides a method and apparatus that can perform a low-power consuming operation when a terminal is in active state in a cellular system. The method for discontinuously transmitting/receiving packet data to reduce power consumption of a terminal in a cellular system, including the steps of: a) establishing discontinuous transmission/reception (DTX/DRX) parameters including discontinuous DTX/DRX cycle information for terminals operating in a transmission suspension mode, which is a sub-state of an active state; and b) performing DTX/DRX based on the DTX/DRX parameters in the terminals operating in the transmission suspension mode.

A method performed by a network node for managing power of Cell Reference Symbols, CRS, wherein the network node operates one or more cells and the network node is configured to transmit the CRS in a first power mode. When the network node identifies a first cell which is not actively serving any UEs, which cell is also referred to as an empty cell, the network node reduces the power of the CRS in the first cell in relation to the first power mode. By reducing the power of the CRS, the overall interference of the CRS from the empty cell is reduced, thereby enhancing the performance in cells actively serving UEs.

A method for saving power of a radio frequency (RF) system is provided herein. The method includes the steps of supplying a RF transmitter of the RF system configured for sending a RF transmission at a first transmission power level and supplying a RF receiver in communication with a controller of the RF system, the RF receiver configured for receiving the RF transmission from the RF transmitter. The controller includes a control algorithm to adjust the transmission power level of the RF transmitter based upon a status of a data frame to be received by the RF receiver. An RF system using the aforesaid method is also provided.

A Bluetooth component (e.g., a Bluetooth chip) and a digital signal processing (DSP) component (e.g., an audio DSP) of a device may directly handle link condition sensing (e.g., link quality monitoring) and audio bitrate determination. The Bluetooth component may perform link condition sensing (e.g., link quality monitoring) and the Bluetooth component and/or the DSP component may perform link condition processing and audio bitrate determination. Encoding scheme (e.g., audio bitrate) determination and modification may be performed independently by the Bluetooth component and DSP component, such that encoding schemes may be adapted to link conditions while other hardware (e.g., connected to the DSP) is operating in a low power or sleep state. In some cases, the Bluetooth component may sense link conditions and transmit bitrate information directly to audio encoding blocks of the DSP component.

An electronic device and a power control method of an electronic device are provided. The electronic device may include: a communication circuit including a first circuit configured to perform first communication and a second circuit configured to perform second communication; a processor electrically connected to the communication circuit; and a memory electrically connected to the processor, wherein, the memory stores instructions that, when executed, cause the processor to perform operations comprising: controlling the first circuit to operate according to a first power control mode associated with the first communication, and controlling the second circuit to operate according to a second power control mode associated with the second communication when the first communication and the second communication are concurrently performed through the first circuit and the second circuit; identifying a first sleep period during which the first circuit operates in a sleep mode according to the first power control mode, and a second sleep period during which the second circuit operates in the sleep mode according to the second power control mode; and controlling the communication circuit to operate in a deep sleep mode in which the communication circuit operates with power that is less than or equal to a predetermined power in a period where the first sleep period and the second sleep period coincide.

Methods and apparatus to reduce device power consumption through usage context operation. An operational mode of a mobile device is detected. A usage context corresponding to the operational is determined. A device configuration supportive of the usage context is generated. The device configuration is implemented on the mobile device.

An electronic device and a power control method of an electronic device are provided. The electronic device may include: a communication circuit including a first circuit configured to perform first communication and a second circuit configured to perform second communication; a processor electrically connected to the communication circuit; and a memory electrically connected to the processor, wherein, the memory stores instructions that, when executed, cause the processor to perform operations comprising: controlling the first circuit to operate according to a first power control mode associated with the first communication, and controlling the second circuit to operate according to a second power control mode associated with the second communication when the first communication and the second communication are concurrently performed through the first circuit and the second circuit; identifying a first sleep period during which the first circuit operates in a sleep mode according to the first power control mode, and a second sleep period during which the second circuit operates in the sleep mode according to the second power control mode; and controlling the communication circuit to operate in a deep sleep mode in which the communication circuit operates with power that is less than or equal to a predetermined power in a period where the first sleep period and the second sleep period coincide.

A method for starting a parking transportation vehicle located on a parking position in park mode to perform a cooperative parking maneuver. The parking transportation vehicle is equipped with an on-board communication module capable of performing mobile radio communication. The method includes registering wake-up information with a message exchange in a parking backend server in response to the parking transportation vehicle being put in park mode. The wake-up information includes information about communication resources to be used for sending a wake-up message to the parking transportation vehicle and for identifying the wake-up message. The method also includes listening to the registered communication resources during park mode, leaving park mode and switching to normal mode, and sending a starting request message to the parking backend server, receiving a starting message from the parking backend server, and starting the engine for performing the cooperative parking maneuver.

An in-vehicle authentication device may perform wireless communication with a portable device in a vicinity of a vehicle. The in-vehicle authentication device may transmit a call signal that requests a reply of a response signal to the portable device. The in-vehicle authentication device may transmit an authentication request signal that requests a reply of an authentication signal to the portable device when the in-vehicle authentication device determines that the portable device exists in the vicinity of the vehicle by receiving the response signal. The in-vehicle authentication device may authenticate the portable device that transmits the authentication signal based on the authentication signal when the authentication signal is received.

A first communication device generates a frame that includes an indication of a transmit power corresponding to one or more null data packets (NDPs) separate from the frame to permit a second communication device to determine a pathloss between the first communication device and the second communication device based on a received power of the one or more NDPs at the second communication device. The first communication device transmits the frame as part of a ranging measurement exchange. As part of one or more ranging measurement exchanges, the first communication device transmits the one or more NDPs in accordance with the transmit power indicated in the frame.