Abstract: A processing method and device for Device to Device (D2D) discovery are provided. The method includes that: a broadcaster terminal acquires a radio resource in a D2D discovery process; and the broadcaster terminal sends a mode indicator and a broadcast identifier through the radio resource, wherein the mode indicator is used for indicating whether a terminal corresponding to the broadcast identifier is the broadcaster terminal or a target terminal which the broadcaster terminal expects to discover. By the solution, flexibility and diversity of a D2D communication mode are enhanced, and user experiences are improved.

Abstract: A set of wearable devices, each paired with a companion device, are configured to cumulatively maintain data about physical activities even though a user may switch between wearing them over a period of time. For example, a streak of workouts over many days can be maintained while the user switches between two watches over that period of time.

Abstract: Transmit power control methods and apparatus are disclosed. In several embodiments, a mobile terminal is configured to effectively ignore “UP” transmit power control commands in the event that the mobile terminal is operating in a power-limited state. In an exemplary method for controlling transmit power at a mobile terminal, a plurality of transmit power control commands are received. An accumulated power control value is adjusted in response to each transmit power control command that directs a negative adjustment in transmit power. However, the accumulated power control value is adjusted in response to a transmit power control command that directs a positive adjustment in transmit power only if the mobile terminal is not in a power-limited state. Transmit power settings for each transmission are calculated based on the accumulated power control value and the one or more radio link parameters.

Abstract: The present disclosure relates to technologies for a sensor network, machine-to-machine (M2M) communications, or machine type communications (MTC), and Internet of things (IoT), and may be utilized in intelligent services, based on the above technologies, such as a smart home, a smart building, smart cities, smart cars or connected cars, smart grids, healthcare, smart electronics, advanced medical services, public safety network communications through fusion and convergence with conventional IT technologies and various industries. Data transmission control between a group of uncoordinated electronic devices in a computer network including the use of transmission authorization request messages and transmission authorization grant messages.

Abstract: Embodiments of the present disclosure disclose a method, device, terminal and storage medium for adjusting a broadcast message queue. The method includes: determining a target broadcast sender of each of a plurality of broadcast messages in a broadcast message queue, the a plurality of broadcast messages being arranged in the broadcast message queue according to broadcast timings of the respective broadcast messages; making statistics on frequency information of identical broadcast messages sent by the target broadcast sender; and when the frequency information of the identical broadcast messages exceeds a predetermined threshold, deleting at least part of the identical broadcast messages in the broadcast message queue so as to adjust the broadcast message queue.

Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: A method for masking communication signals, particularly for masking terrestrial RF communication signals on board of an aircraft, includes parallelizing a first information data stream to be transmitted on a first LTE transmission channel. The first LTE transmission channel has a first channel transmission bandwidth and at least one guard band adjacent to the channel transmission bandwidth. The first information data stream is spread over mutually orthogonal data subcarriers within the first channel transmission bandwidth. A CAZAC sequence is generated. The generated CAZAC sequence is spread over guard band subcarriers within the at least one guard band. The first information data stream is transmitted over the data subcarriers in parallel to the CAZAC sequence over the guard band subcarriers.

Abstract: A method for power control in a wireless network is performed in a first node in the wireless network and comprises the steps of: estimating a received power spectral density from a second node in the wireless network; determining a target received power spectral density from a third node in the wireless network, in dependence of the estimated received power spectral density; and sending power control information to the third node in dependence on the determined target received power spectral density.

Abstract: Method and system for controlling a plurality of communication devices. One system includes a server for a communication system in which each of a plurality of communication devices is affiliated with at least one talk group among a plurality of talk groups. The server includes an electronic processor configured to determine whether each communication device of the plurality of communication devices is in a connected state. The electronic processor is further configured to determine that at least one talk group does not include any communication devices affiliated with the at least one talk group that are in the connected state. The electronic processor is further configured to place at least one communication device affiliated with the at least one talk group in an artificially-connected state based on at least one characteristic of the communication devices affiliated with the at least one talk group.

Abstract: The invention relates to a communication device for vehicle-to-X communication for a vehicle, comprising: at least four antennas for transmitting and receiving wireless information and at least one electronic control unit (ECU) for transmitting and receiving information via the antennas and for processing the information received or to be transmitted via the antennas, wherein the at least four antennas are arranged on the vehicle in such a way that the directional characteristics of antennas among the at least four antennas which are arranged directly opposite each other on the vehicle exhibit a spatial overlap.

Abstract: A multimode terminal includes a first modem chip, a second modem chip, a switch connected to both the modem chips, and at least two antennas connected to the switch. The first modem chip includes an antenna selection apparatus configured to select an optimum antenna for the first modem chip, control the switch to connect the first modem chip to the optimum antenna of the first modem chip, determine an optimum antenna of the second modem chip according to a related parameter value of a signal received or transmitted by the second modem chip, and control the switch to connect the second modem chip to the optimum antenna of the second modem chip. The second modem chip includes a measurement apparatus configured to measure the related parameter value of the signal received or transmitted by the second modem chip.

Abstract: Systems and methods of friendly jamming for securing wireless communications at the physical layer are presented. Under the assumption of exact knowledge of the eavesdropping channel, a resource-efficient distributed approach is used to improve the secrecy sum-rate of a multi-link network with one or more eavesdroppers while satisfying an information-rate constraint for all links. A method based on mixed strategic games can offer robust solutions to the distributed secrecy sum-rate maximization. In addition, a block fading broadcast channel with a multi-antenna transmitter, sending two or more independent confidential data streams to two or more respective users in the presence of a passive eavesdropper is considered. Lastly, a per-link strategy is considered and an optimization problem is formulated, which aims at jointly optimizing the power allocation and placement of the friendly jamming devices for a given link under secrecy constraints.

Abstract: A device and method for lower latency digital audio sample playback is provided. The device comprises: a hardware digital signal processor (DSP); higher and lower latency audio paths to the DSP; a kernel driver; a kernel random-access memory (RAM) including kernel RAM buffers accessible by the kernel driver; and a controller. The controller: prior to digital audio samples being used by an application, pre-loads, using the kernel driver, the samples at the kernel RAM buffers; responsive to a trigger in the application to play a given digital audio sample, determines, using a sample identifier of the given sample, whether the given sample is pre-loaded at the kernel RAM buffers; when the sample is pre-loaded, plays, using the DSP, the given sample via the lower latency path; and when the given digital audio sample is not pre-loaded, plays, using the DSP, the given sample via the higher latency path.

Abstract: Apparatus and methods for vehicle-to-everything (V2X) communications, and in particular for vehicle-to-vehicle (V2V) communications. The apparatus comprises two remote antennas positioned in a vehicle and communicatively coupled by digital connectivity and a coordinator communicatively coupled to the two remote antennas and operative to synchronize operation of the two remote antennas.

Abstract: A method includes monitoring, by a receiver of a first node, a portion of a spectrum. The method also includes receiving, by the receiver of the first node, a signal on a first frequency within a range of frequencies. The method additionally includes determining that the received signal is a link request from another node. The method further includes decoding a proposed link configuration from the link request. The proposed link configuration includes a proposed transaction frequency for a transaction to be sent to the first node from the other node. The proposed transaction frequency may be the same as or different from the first frequency. The method may also include determining, by a processor of the first node, whether the proposed link configuration is suitable. The method may additionally include receiving, by the receiver, at least one signal indicative of the transaction from the other node.

Abstract: The present disclosure pertains to method for operating a network node of a cellular communication network, the method comprising scheduling, by the network node, a ProSe Focused Frame, PFF frame. The disclosure also pertains to related devices and methods.

Abstract: Techniques for using a narrow filter located before a power amplifier to reduce interference in an adjacent frequency band are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes the narrow filter and the power amplifier. The narrow filter is for a first frequency band (e.g., Band 40) and has a first bandwidth that is more narrow than the first frequency band. The narrow filter receives and filters an input radio frequency (RF) signal and provides a filtered RF signal. The power amplifier receives and amplifies the filtered RF signal and provides an amplified RF signal. The apparatus may further include a full filter for the first frequency band and located after the power amplifier. The full filter receives and filters the amplified RF signal and provides an output RF signal when it is selected for use.

Abstract: A three hop wireless repeater is disclosed, including a donor unit having transmit and receive antennas for wireless communication with one or more cellular base stations, and a server unit having transmit and receive antennas for wireless communication with the donor unit and with one or more wireless communication devices. The repeater further includes a physical cable interconnect between the donor unit and the server unit. The physical cable interconnect includes a donor unit sleeve having donor unit coupling antennas to inductively couple signals to and from the transmit and receive antennas of the donor unit, and a server unit sleeve having server unit coupling antennas to inductively couple signals to and from the transmit and receive antennas of the server unit.

Abstract: Certain features relate to systems and methods for optimizing the radio frequency characteristics of signals transmitted between a radio base station (RBS) and a distributed antenna system (DAS). A self-optimizing network (SON) entity can determine adjustments to radio frequency operations and management parameters at the RBS based on radio frequency parameters measured by a measurement and configuration module at the DAS. Adjustments to radio frequency operations and management parameters can include adjustments configured to compensate for signal latency caused by the DAS. Adjustments to radio frequency operations and management parameters can also include adjustments to signal gain due to noise rise caused by the DAS. The SON entity can also measure nominal receive power levels for the RBS for purposes of open loop power control.