Abstract: A method includes: determining, by a terminal device, a carrier aggregation capability and baseband capabilities of the terminal device, where the carrier aggregation capability includes a quantity of carriers and a bandwidth of a carrier in a carrier aggregation group supported by the terminal device, and the baseband capabilities include a multiple-input multiple-output (MIMO) capability; sending, by the terminal device, the information of the carrier aggregation capability and the baseband capabilities to a network device; and receiving, by the terminal device, configuration information.

Abstract: A method includes: determining, by a terminal device, a carrier aggregation capability and baseband capabilities of the terminal device, where the carrier aggregation capability includes a quantity of carriers and a bandwidth of a carrier in a carrier aggregation group supported by the terminal device, and the baseband capabilities include a multiple-input multiple-output (MIMO) capability; sending, by the terminal device, the information of the carrier aggregation capability and the baseband capabilities to a network device; and receiving, by the terminal device, configuration information.

Abstract: A method includes: determining, by a terminal device, a carrier aggregation capability and baseband capabilities of the terminal device, where the carrier aggregation capability includes a quantity of carriers and a bandwidth of a carrier in a carrier aggregation combination supported by the terminal device, and the baseband capabilities include a multiple-input multiple-output (MIMO) capability; sending, by the terminal device, the information of the carrier aggregation capability and the baseband capabilities to a network device; and receiving, by the terminal device, configuration information.

Abstract: The communication method includes: obtaining a received signal strength indicator RSSI; comparing the obtained RSSI with a predetermined value; determining a Bluetooth transmission link based on a comparison result, where the Bluetooth transmission link includes a first transmission link and a second transmission link, where the first transmission link is a transmission link of an internal power amplifier of a Bluetooth module, and the second transmission link is a transmission link of a combination of the internal power amplifier of the Bluetooth module and an external power amplifier of the Bluetooth module; and transmitting a Bluetooth signal based on the determined Bluetooth transmission link. According to the present invention, the RSSI value of the Bluetooth device is detected, the detected RSSI value is compared with the predetermined value, and the transmission link of the Bluetooth device is determined based on the comparison result.

Abstract: A method includes: determining, by a terminal device, a carrier aggregation capability and baseband capabilities of the terminal device, where the carrier aggregation capability includes a quantity of carriers and a bandwidth of a carrier in a carrier aggregation group supported by the terminal device, and the baseband capabilities include a multiple-input multiple-output (MIMO) capability; sending, by the terminal device, the information of the carrier aggregation capability and the baseband capabilities to a network device; and receiving, by the terminal device, configuration information.

Abstract: Example radio frequency front ends, terminal devices, and carrier aggregation methods are provided. In one example, the radio frequency front end includes: P transmit branches, each transmit branch includes at least one transmit filter, N receive branches, where each receive branch includes at least one receive filter, and a switch circuit having L input ports and at least one output port, where the at least one output port is connected to an antenna or a back end circuit of an antenna, and where the L input ports are used to simultaneously connect a transmit branch of the P transmit branches and a receive branch of the N receive branches, where the transmit branch and the receive branch are corresponding to a same frequency band.

Abstract: The communication method includes: obtaining a received signal strength indicator RSSI; comparing the obtained RSSI with a predetermined value; determining a Bluetooth transmission link based on a comparison result, where the Bluetooth transmission link includes a first transmission link and a second transmission link, where the first transmission link is a transmission link of an internal power amplifier of a Bluetooth module, and the second transmission link is a transmission link of a combination of the internal power amplifier of the Bluetooth module and an external power amplifier of the Bluetooth module; and transmitting a Bluetooth signal based on the determined Bluetooth transmission link. According to the present invention, the RSSI value of the Bluetooth device is detected, the detected RSSI value is compared with the predetermined value, and the transmission link of the Bluetooth device is determined based on the comparison result.

Abstract: Embodiments of the present disclosure relate to methods and terminals for improving GPS performance. One example method includes detecting a placement state of the terminal and opening a receiving channel corresponding to the placement state. The receiving channel can be used to receive signals sent by K satellites. A signal receiving channel corresponding to the terminal is selected according to the state of the terminal.

Abstract: Example radio frequency front ends, terminal devices, and carrier aggregation methods are provided. In one example, the radio frequency front end includes: P transmit branches, each transmit branch includes at least one transmit filter, N receive branches, where each receive branch includes at least one receive filter, and a switch circuit having L input ports and at least one output port, where the at least one output port is connected to an antenna or a back end circuit of an antenna, and where the L input ports are used to simultaneously connect a transmit branch of the P transmit branches and a receive branch of the N receive branches, where the transmit branch and the receive branch are corresponding to a same frequency band.

Abstract: A USB connector, a PCB connected to the USB connector, and a USB device are provided. The USB connector includes a metal surface, and on the metal surface, a solid metal part is set at a location corresponding to a spring of a socket, so that the spring contacts the solid metal part after the USB connector is inserted into the socket to reduce electromagnetic interference. The USB connector may include an in-line weld leg; a metal enclosure located at the same side as the in-line weld leg fully contacts a PCB when the USB connector is connected to the PCB; and contact surfaces on the USB connector that contact the PCB are metal surfaces. The PCB includes a suppression circuit configured to suppress harmonic waves in USB data transmission.

Abstract: The present invention applies to the field of energy saving, and in particular, to an apparatus, a method, and a mobile terminal for reducing power consumption on a power amplifier. In embodiments of the present invention, a controller is separately connected to a temperature detector and a voltage converter. The controller searches for, according to a temperature of the power amplifier detected by the temperature detector, a voltage compensation value corresponding to the temperature, and controls, according to the voltage compensation value, the voltage converter to output a power voltage that is capable of improving efficiency of the power amplifier. This may enable the power amplifier to work in an optimal efficiency at any temperature, and greatly reduce the power consumption of the power amplifier.