The present disclosure provides a method of generating codebook in a wireless communication system with multiple antenna arrays, as well as a wireless communication system, base station and terminal using the codebook for communication. The method comprises steps of: providing a basic codebook which contains multiple pre-coding matrices; and assigning phase offsets to certain pre-coding matrices in the basic codebook to form a codebook with phase offset. The feedback overhead from a client to a base station side is reduced and a good precision of feedback for multi-antenna array is kept by applying the method of generating codebook and using the generated codebook in the wireless communication system, base station and terminal.

A holder for a mobile radio communication device configured as a mobile phone or smart phone, the holder including a flat rectangular housing into which the mobile radio communication device is insertable; and a flexible band attached at a first long side of the flat rectangular housing. In order for the mobile radio communication device to be supportable in one hand essentially by one finger a fastening element configured as a hook arranged at a second long side of the housing opposite to the first long side of the housing where the flexible band is attached is provided wherein the hook is engageable by the band.

The present invention relates to a finger grip for a smart device, including: a bonding sheet having a bonding surface attached to one side of an outer surface of the smart device; a guide sheet coupled to one side surface of the bonding sheet and having a guide slot formed on one side thereof and a coupling groove formed on the other side thereof; a variable sheet laminated on one side surface of the guide sheet and having a fusion portion formed correspondingly to the coupling groove and a slide pin formed protrudingly therefrom to pass through the guide slot; a fixing rivet coupled to the slide pin of the variable sheet to prevent the slide pin from escaping from the guide slot; and a printed film coupled to one side surface of the variable sheet.

A mobile device may comprise: a power source, one or more sensors, a communication device, and an actuator. The power source can be configured to provide power to one or more components of the mobile device. The one or more sensors can be configured to generate sensor data. The communication device can be removably coupled to the power source to receive power therefrom and can be further configured to communicate with one or more computing devices remote to the mobile device. The actuator can be configured to transition between at least a first state and a second state to cause the communication device to electrically disconnect from the power source to terminate communication of the communication device with the one or more computing devices remote to the mobile device. The one or more sensors can be configured to generate sensor data when the actuator is in the first state or the second state.

A platform that utilizes QR codes, Radio Frequency Identification and/or Near Field Communication for geolocation in securing users safety and a MESH network to ensure emergency safety device performs under any network configuration cellular/wifi/bluetooth. The platform enables the dashboard and/or application programs executing thereon to effectively secure users of platform with audio/visual recordings of any such events which may endanger an associate working in a discrete location on their own. A user can also locate the associate in the case of an emergency. The platform also enables speech enabled summoning of the panic button. The platform plans to utilize ultra wide band technologies in addition to cellular/wifi/bluetooth channels. The platform is also available to emergency services based on the severity of an issue that may arise. The platform can also transmit single channel walkie talkie services to users of platform at the same location.

Techniques for music selection based on exercise detection are disclosed. In one aspect, a method of operating a wearable device may involve determining, based on output of one or more biometric sensors, that a user of the wearable device has started an exercise and playing music for the user of the wearable device in response to determining the start of the exercise. For example, playing the music may involve turning on a music player based on the start of the exercise. In another example, the wearable device includes the music player.

A support frame for a bendable display screen includes: a fixed part; a bendable part connected with the fixed part; and an end part arranged at an end of the support frame. The bendable part includes a first bendable part and a second bendable part. The first bendable part includes a plurality of first frame members connected with one another, and the plurality of first frame members have a gap therebetween. The second bendable part is connected with the end part. Both the end part and the fixed part are provided with a limiting member.

An electronic device for changing a notification mode and a method therefor are provided. The electronic device includes communication circuitry, at least one processor, and a memory. The memory stores instructions, when executed, configured to cause the at least one processor to establish communication with a wearable device through the communication circuitry, and upon identifying a change in an operation state of the wearable device, change from a first notification mode of the electronic device to a second notification mode according to the identified operation state of the wearable device.

An adaptive support accessory for providing improved handling, positioning, mounting, and adapting of a mobile device is disclosed. The accessory includes a base attachable to a mobile device and a cap rotationally coupled to the base. The base includes an annular base protrusion centered about an axis of rotation. The cap includes an annular cap protrusion centered about the axis of rotation and disposed adjacent to the annular base protrusion. An aperture formed in the center of the accessory and defining an interior perimetric face provides an engagement feature configured for engaging one or more of a user's fingers, a plug, a mount, and a mounting structure. One or more supports attached to the cap may be configured to engage one or more of a user's fingers, a mount, and a mounting structure. One or more detachably attachable plugs provide additional mounting, adapting, and augmenting the accessory.

A device case with a strap adapted to allow the user to hold an electronic device with the aid of a strap. The device case is adapted to receive an electronic device, such as a cellular telephone, with a case with rimmed sides that capture the electronic device. The strap may unclip and move along a fixed path, exposing a clip adapted to be received by a clip receiver, such as on a tripod. An attachable device strap adapted to be adhesively fastened to the back side of an electronic device, such as a cellular telephone, or to the back side of a case holding a cellular telephone. The strap may unclip and move along a fixed path, exposing a clip adapted to be received by a clip receiver, such as on a tripod. Accessories such as stands, holders, and lights may be couple to the exposed clip, adding other functionalities to the case system.