Abstract:
Apparatus comprises a memory configured to store a matrix of transmit data; a multi-element antenna; and a transmitter configured to transmit a signal from a multi-element antenna as part of a packet within a transmit period in a switching interval by: switching between different elements of the multi-element antenna in a sequence of transmit intervals within the transmit period; and deriving the signal for transmission in different transmit intervals from different ones of the transmit data in the matrix. Also, apparatus comprises a receiver configured to receive plural packets; and an accumulator configured, for each packet, to accumulate signals received in a switching interval of the packet. The apparatus is configured to: derive a correlation metric for each of the packets from the accumulated signals for the packets; identify a packet with the best correlation metric; identify a direction associated with the packet identified as having the best correlation metric; and provide the direction as an output.
Abstract:
Disclosed is apparatus configured: to create an advertising message including a packet data unit [PDU] including information identifying an application that may be installed on the apparatus and an indication that the PDU may include an application recommendation; and to cause the advertising message to be broadcast. Another apparatus is configured: to receive an advertising message including a packet data unit [PDU] including information identifying an application that may be installed on another apparatus and an indication that the PDU may include an application recommendation; and to use the information identifying an application to provide an option to install the application.
Abstract:
Provided are methods, apparatuses, and computer program products for calibrating a direction-finding system in a handheld device. A method is provided, which comprises: displaying instructions for orienting a device such that an image of a calibration source through a camera of the device falls in a designated position on a screen of said device; receiving a signal from said calibration source via an antenna array of the device; calculating an orientation angle between said device and said calibration source based on said image of the calibration source; storing pairs of the signal and the orientation angle at various instances while moving or rotating the device to make the image of the calibration source move along a predefined trajectory displayed on the screen; and calibrating a direction-finding system in the device based on the stored pairs of the signal and the orientation angle.
Abstract:
One of the embodiments of the present invention relates to a method for modulation. The method comprises: providing a first bit sequence of continuous bits “1” or continuous bits “0” generating a second bit sequence by replacing, in each of a plurality of modulation intervals with a predetermined bit number, at least one bit of the first bit sequence at at least one fixed position of the respective modulation interval with one information bit from an information bit sequence; and modulating the second bit sequence so as to generate a positioning packet with a modulated continuous wave signal for transmission. The embodiments further relate to a method for demodulation. Embodiments of the present invention also provide corresponding apparatuses and computer program products.
Abstract:
Apparatus has at least one processor and at least one memory having computer-readable code stored therein which when executed controls the at least one processor: to respond to receiving a proxy connection initiation request message from a source, the proxy connection initiation request message being a request to provide a proxy and including an address of a target and an address of the source, by causing sending of an advertising message addressed to the target; and to respond subsequently to receiving a connection request message from the target by causing sending of a proxy setup request message addressed to the source.