CPC Class H04W

The present application provides a radio frequency front end circuit, a wireless communication device and a method for coupling signals in support of multiple input and multiple output, and carrier aggregation for multiple frequency bands of operation between one or more transceivers and a plurality of antennas. Each antenna is associated with a respective signal from each of a first frequency band of operation and a second frequency band of operation from the one or more transceivers. The radio frequency front end circuit includes a multi-close front end switch associated with one of the plurality of antennas, where separate terminals of the multi-close front end switch are each respectively associated with the respective signal from each of the first frequency band of operation and the second frequency band of operation corresponding to the associated antenna from the one or more transceivers. The separate terminals of the multi-close front end switch can be simultaneously coupled to a port coupled to the associated antenna via multiple throws within the multi-close front end switch.

Aspects of the present disclosure includes a method of performing enhanced auto-selection in a UE including initiating the UE having at least a first subscriber identify module (SIM) card and a second SIM card, obtaining a current ICCID associated with the first SIM card, obtaining, from a cache of the UE, a previous ICCID used in a previous connection to a previously identified carrier, determining whether the current ICCID matches the previous ICCID, in response to determining that the current ICCID does not match the previous ICCID, creating a new card information using data stored in the first SIM card, obtaining one or more selection policies, identifying a carrier based on the one or more selection policies, and connecting to the identified carrier using data stored in the second SIM card associated with the identified carrier.

An RF front-end circuit of an RF transceiver is described herein. In accordance with one exemplary embodiment, the fronted circuit includes a local oscillator (LO) configured to generate an RF transmit signal, an RF output port coupled to the local oscillator, wherein the RF transmit signal is output at the RF output port, and a monitoring circuit receiving an input signal and configured to determine the phase of the input signal or the power of the input signal or both. A directional coupler is coupled to the RF output port and configured to direct a reflected signal incoming at the RF output port as input signal to the monitoring circuit, and a controller is configured to detect, based on the determined phase or power or both, a defect in a signal path operably connected to the RF output port.

The systems and methods described herein are directed to techniques for improving battery life performance of end devices in resource monitoring systems which transmit data using low-power, wide area network (LPWAN) technologies. Further, the techniques include providing sensor interfaces in the end devices configured to communicate with multiple types of metrology sensors. Additionally, the systems and methods include techniques for reducing the size of a concentrator of a gateway device which receives resource measurement data from end devices. The reduced size of the concentrator results in smaller, more compact gateway devices that consume less energy and reduce heat dissipation experienced in gateway devices. The concentrator may comply with modular interface standards, and include two radios configured for transmitting 1-watt signals. Lastly, the systems and methods include techniques for fully redundant radio architecture within a gateway device, allowing for maximum range and minimizing downtime due to transmission overlap.