Abstract:
A method for a wireless communication device of running a software application is disclosed. The method comprises determining, at the wireless communication device, an expected downlink data amount of the software application and acquiring a downlink data amount to communication state mapping threshold value. The method also comprises comparing the expected downlink data amount to the threshold value and sending, to a network node, a desired communication state request based on the comparison. A method for a network node is also disclosed. The method comprises sending a downlink data amount to communication state mapping threshold value to a wireless communication device. The method also comprises receiving a desired communication state request from the wireless communication device and determining a communication state of the wireless communication device based on the received desired communication state request. Corresponding computer program products, arrangements, communication devices and network nodes are also disclosed.
Abstract:
A receiver (100) has an In-phase path (1-path) (101) that delivers a digital 1-path signal x1(t) and a Quadrature path (Q-path) (103) that delivers a digital Q-path signal xQ(t). The receiver (100) includes a compensation stage (124) arranged to compensate for gain error g and phase error φ between the digital 1-path signal x1(t) and the digital Q-path signal xQ(t). The compensation stage (124) has a compensation coefficient generation stage (200), a compensation coefficient application stage (202), a gain control stage (208), a relative gradient generation stage (214) and a step parameter generation stage (224). Compensation coefficients W1,1, W1,2, W2,1, W2,2 applied to the digital 1-path signal x1(t) and the digital Q-path signal xQ(t) are generated by iteratively updating them using a relative gradient of the compensated digital in-phase signal γ1(t) and a compensated digital quadrature signal γQ(t), and a step parameter μn, the magnitude of which is adjusted based on a rate of change of the compensation coefficients W1,1, W1,2, W2,1, W2,2.
Abstract:
A low-power-mode unit connected in parallel with a low-dropout regulator to provide a low-power mode includes a power P-MOS transistor, a differential amplifier, and an analog synchronization loop. The analog synchronization loop is configured to add a variable voltage offset depending on a total current at the output such that, in a high-power mode, the low-power unit current flowing through the P-MOS transistor is not zero, while being substantially smaller than the low-dropout regulator current flowing through the low-dropout regulator, and smaller than a predetermined value.
Abstract:
There is described a method of and a wireless mobile station for performing a beacon scanning of wireless Access Points, APs, in a wireless local area network, WLAN, the wireless mobile station comprising:—a unit configured for entering a low power mode of beacon scanning in which a beacon signal detection unit is active and a signal decoding unit is not active;—a unit configured for scanning simultaneously a set of channels;—a unit configured for recording within a list information regarding time of presence of beacon signal power;—a unit configured for leaving the low power mode of beacon scanning and activating the decoding unit responsive to presence of beacon signal power having been detected; and,—a unit configured for decoding the detected channels.
Abstract:
Methods of processing a frame in a video sequence of digital images are described, the methods comprising: determining a global motion vector for the frame relative to a previous frame in the sequence; deriving a jitter function from the global motion vector, the jitter function comprising an estimate of undesired motion of the frame relative to the previous frame; determining whether the frame is blurred above a first predetermined threshold; and if so, stabilising the frame using the jitter function and applying a deblur function to the frame.
Abstract:
The present invention provides a method for analyzing a digital image comprising a plurality of pixels representing a scene. The method comprising steps of obtaining pixel chromaticity information, providing, combinations each having a corresponding surface and a corresponding illuminant, performing a global scene surface-illuminant classification by determining hypothesis scores, accumulating hypothesis scores, thereby obtaining a global illuminant/surface statistic representing an estimate of a distribution of illuminants and/or surfaces in the scene as represented by the digital image. Other methods are also provided. Apparatuses for carrying out the methods are also provided.
Abstract:
Communication device (T1) comprising—An antenna (A1) and physical circuitry (PHY) for receiving a poll command (PC) from a second communication device (T2).—A plurality of entities (D1, D2, D3 . . . Dn) emulating NFC devices,—An arrangement for deciding, for each entity of said plurality of entities, if a response should be sent and if so sending a response (LF1, LF2, LF3 . . . LFn) to said second communication device (T2), containing information related to the respective NFC device.
Abstract:
A service provider node (101), and a method therein, for transmitting data packets relating to parts of a service to a communication device (102). The service provider node and the communication device are communicatively connected over a communications network (104) and comprised in a communications system (100). The method comprises receiving (205, 302) a signal (S1), which signal comprises an identifier of the communication device requesting a service, an identifier of the requested service, and an agreement comprising information about a previously agreed part of the service. The method comprises further agreeing (303) on an upcoming part of the service requested by the communication device, while transmitting (206, 304) data packets relating to the previously agreed part of the service to the communication device, wherein the data packets are transmitted in dependence of the received signal.
Abstract:
A method of calibrating coexistence of several wirelessly communicating sub-systems within a wireless device wherein the wirelessly communicating sub-systems comprise several transmitters and several receivers which are interconnected through one or more interfaces, the method comprising:—activating one of the transmitters while maintaining the other transmitters off by causing said transmitter to transmit a first signal with a known set of characteristics;—measuring unwanted signal received at each receiver and originating from a coupling of said receivers with the activated transmitter;—storing coupling data derived from each of the measured unwanted signals in relation with the set of signal characteristics of the first signal and/or a set of unwanted signal characteristics, whereby forming a calibration database for adjusting operation of one or more transmitters and/or receivers to manage the coexistence of the plurality of wirelessly communicating sub-systems during normal operation of the wireless device.
Abstract:
There is described a method for establishing an NFC connection between a subscriber identity module (SIM) and an NFC device (RDR). The subscriber identity module (SIM) is connected to a telecommunications system (CELL_P) through contacts (VCC, RST, CLK, D+, GND, SWP, IO, D−) of the telecommunications system (CELL_P). The telecommunications system (CELL_P) comprises a chipset (CHP) and an NFC circuit (NFCC). The method comprises measuring the level of charge of a battery (BATT) powering the telecommunications system (CELL_P) with a battery gauge. Based on the measurement, the method selects the source for supplying power to the subscriber identity module (SIM) and configures the wiring of the subscriber identity module (SIM). The disclosure also relates, in particular, to a telecommunications system, to a computer program, and to a storage medium.