Abstract:
Method of data processing for selectively activating, at a mobile station, a mode of communication related to VAMOS-2 technology. The method includes the steps of: receiving a first signal of a first subchannel, the first signal containing a first training sequence, and receiving a second signal of a second subchannel, the second signal containing a second training sequence, the second signal being orthogonally multiplexed with respect to the first signal, and using the first training sequence and the second training sequence to: determine a value of a parameter defining a ratio between the first subchannel power and the second subchannel power, and determine a signal to noise ratio estimation, and determine, using the parameter value and the signal to noise estimation, whether the mode of communication has to be activated.
Abstract:
An exemplary method of maintaining secure time in a computing device is disclosed in which one or more processors implements a Rich Execution Environment (REE), and a separate Trusted Execution Environment (TEE). The TEE maintains a real-time clock (RTC) that provides a RTC time to the REE. A RTC offset is stored in non-volatile memory, with the RTC offset indicating a difference between the RTC time and a protected reference (PR) time. Responsive to a request from the REE to read the RTC time, a current RTC time is returned to the REE. Responsive to a request from the REE to adjust the RTC time, the RTC time and the corresponding RTC offset are adjusted by a same amount, such that the PR time is not altered by the RTC adjustment. An exemplary computing device operable to implement the method is also disclosed.
Abstract:
A downlink signaling counter management method for a communication device is adapted to be simultaneously associated with at least two subscriber identities and to simultaneously provide radio receiving capabilities to less than all of the subscriber identities. For each decoding of a paging block for a subscriber identity, it is determined whether the paging block decoding was correct and whether a previous paging block decoding condition is fulfilled. The downlink signaling counter is updated with different values depending on this determination results, and on whether the paging block decoding was based on a maximum number of paging bursts.
Abstract:
The invention concerns a Near Field Communication method comprising a step (1) of generating, by an antenna of a transmitter, a magnetic field (H), a step (2) of receiving, by an antenna of a tag, power from the generated magnetic field (H), then causing a drop in the generated magnetic field (H), wherein the method further comprises a step (3) of estimating the drop by sensing a voltage swing across said transmitter antenna.
Abstract:
A protection module (4) for a RF-amplifier (2) is efficient against overvoltage due to load impedance mismatch when said RF-amplifier is connected to a load RF-element (3). The protection module comprises a branch with at least one diode-like operating component (D1, D2, . . . , Dn) and a resistor (R2) which starts conducting when a RF-signal on a transmission link (6) between the RF-amplifier and the load RF-element is higher than a threshold set by the diode-like operating component. Such protection may be implemented in MOS technology only.
Abstract:
A method in a first device for anonymously delivering data to a part that has initiated a task is provided. The first device and the part initiating a task are participants in opportunistic sensing. The method comprises creating a data sample and encrypting the data sample with a public key of the task initiating part. After communicating the protected sample toone or more intermediate devices, one of the one or more intermediate devices delivers the protected sample to the task initiating part, such that the task initiating part does not know the identity of the first device. The task initiating device only know the identity of the one of the one or more intermediate devices that delivered the protected sample to the task initiating part, wherein the intermediate devices are participants in the opportunistic sensing.
Abstract:
The present invention provides a method for power control, a user equipment, a computer program and a storage medium. Based on an adjustment trend of the UE with respect to signal transmission power of a base station and a variation trend of the received signal quality, a current power control mode of the UE is determined, and then a target value of the received signal quality of inner-loop power control is reset after the power control mode of the UE tends to normal, so as to return the transmission power of the base station to the UE to a normal level as soon as possible, thereby to inhibit adverse influences caused by the windup effect.
Abstract:
An integrated circuit (100) comprises a clock generation stage (120) arranged to generate a clock signal having a clock frequency dependent on a reference signal. A delay stage (130) is arranged to generate a Clock Generation Stage delayed clock signal by delaying the clock signal. A control stage (140) is arranged to generate a control signal indicative of a delay of the delayed clock signal relative to the clock signal. A frequency divider (150) arranged to generate a divided signal by dividing a dividend signal having a dividend frequency dependent on the reference signal. A power supply regulator (170) is arranged to supply power to the frequency divider (150) at a first power level, the first power level being dependent on the control signal. power supply controlpower supply control
Abstract:
A method of driving a power stage configured to provide both positive output voltage higher than a first potential to a positive output and negative output voltage to a negative output, the method comprising:—generating a first control signal;—generating a second control signal;—operating, the first control signal so as to initiate a charging phase, such that a first duty cycle of the first control signal is controlling an amount of energy to be accumulated;—operating, simultaneously, at the control signals so as to initiate an independent discharging phase of the accumulated energy, in a boost-type to the positive output or in a buck-type or boost-type to the negative output, such that a second and third duty cycles of the second an third control signals are controlling an amount of energy to be discharged.
Abstract:
OFDM communication transceiver having a receiver chain and an emitting chain, adapted to test its connection with an antenna circuit unit (11), the receiver chain comprising a time-to-frequency transform unit (15) and the emitting chain comprising a frequency-to-time transform unit (6), and the transceiver further comprising:—Means for disconnecting the receiver chain to the antenna circuit unit (11);—Means for providing a stimulus as input to the emitting chain;—Means (22, 23) for reintroducing the signal at the output of the emitting chain as an input of the receiving chain;—Means (24) for determining a Circuit resonance frequency, Fr, and a quality factor, Q, of a transfer function computed from the output of the time-to-frequency transform unit (15);—Means for deciding (25, 26) about the connection of said antenna circuit unit (11) according to these resonance frequency and quality factor.