Abstract: An acoustic wave device is provided between a first terminal that is an antenna terminal and a second terminal that is different from the first terminal, and includes a plurality of acoustic wave resonators. The plurality of acoustic wave resonators include a plurality of series arm resonators and a plurality of parallel arm resonators. When the acoustic wave resonator electrically closest to the first terminal among the plurality of acoustic wave resonators is an antenna end resonator, the antenna end resonator is a SAW resonator or a BAW resonator. At least one acoustic wave resonator other than the antenna end resonator among the plurality of acoustic wave resonators is a first acoustic wave resonator.

Abstract: Embodiments allow for multiple instances of a state machine to connect with multiple clients. Additionally, a plurality of connection states, while maintaining a connection with a single physical client device, may support multiple modes. For example, a wireless peripheral device determines whether it is paired with a client device and connects if it is, by selecting a saved long term bonding key, based on a user selected device mode. When a scan timeout expires, the device switches to another saved bonding key. When an overall connection timeout expires, these steps repeat. If the device is not already paired, it pairs with a client by setting long term paring key generation key(s), bonding with the client using the generation key(s) to generate a paring key, distributing the pairing key to the client, and saving the pairing key, as a bonding key, based on user selected device mode.

Abstract: Described herein are smart labels, each comprising multiple wireless radios, and methods of operating such labels. For example, a smart label comprises a battery and two wireless radios having different power requirements. When the battery is no longer able to support a high-power radio (e.g., NB-IoT), the battery can still power a low-power (e.g., BLE). A battery can be specially configured and/or controlled to support the multi-radio operation of the smart label. For example, a battery can include multiple battery cells with configurable connections among these cells and radios. Furthermore, some battery components can be shared by wireless radios. The battery can also power other components of the smart label, such as sensors (e.g., temperature, acceleration, pressure, package integrity, global positioning), memory, and input/output components. In some examples, multiple smart labels form a mesh network, designed to lower the total power consumption by the radios of these labels.

Abstract: A wake-up radio system in a wireless sensor network, the wake-up radio comprising: an analog front end configured to communicate with matching network; an analog to digital converter coupled to the analog front end; and a digital baseband coupled to the analog to digital converter, wherein the digital baseband outputs a fast wake-up signal and a secure wake-up signal, and wherein the wake-up radio listens to all channels simultaneously.

Abstract: In accordance with a first aspect, a communication device is provided, comprising: a transmitter configured to transmit one or more radio frequency signal pulses to an external communication device; a receiver configured to receive one or more response signals in response to the radio frequency signal pulses transmitted by the transmitter; a signal analyzer configured to detect one or more characteristics of the response signals, to compare the detected characteristics with predefined reference characteristics and to generate an output indicative of a result of comparing the detected characteristics with the predefined reference characteristics; a processing unit configured to determine at least one category to which the external communication device belongs based on the output generated by the signal analyzer. In accordance with a second aspect, a corresponding method of operating a communication device is conceived. In accordance with a third aspect, a corresponding computer program is provided.

Abstract: A system and method for switching master and slave roles of devices for use in wireless communications. The method includes: establishing a monitoring link for communications between a master device and a host device; and initiating a role exchange request, in which a time point for role exchange is appointed, by the master device or a slave device via the monitoring link when role switching between the master device and the slave device is triggered, and replying with a request receipt acknowledgment packet for the receipt of the role exchange request by the other device via the monitoring link. The system includes the master device, the slave device, and the host device, wherein the master device includes a master processing module; and the slave device includes a slave processing module. The role exchange between the master device and the slave device keeps energy consumptions of the two devices evened out.

Abstract: A ceramic substrate is formed of polycrystalline ceramic and has a supporting main surface. At the supporting main surface of the ceramic substrate, the mean of grain sizes of the polycrystalline ceramic is 0.5 ?m or more and less than 15 ?m and the standard deviation of the grain sizes is less than 1.5 times the mean.

Abstract: An embodiment device comprises a phase locked loop and a frequency locked loop having in common the same controlled oscillator. The device is firstly placed in the card emulation mode at the beginning of a communication between the contactless communication device and a contactless reader, the firstly placing comprising synchronizing within the contactless device, an ALM carrier frequency with a reader carrier frequency by operating at least the phase locked loop, and upon reception by the contactless communication device of an indication sent by the reader indicating a further communication in a peer to peer mode with the reader, the device is secondly placed in the peer to peer mode, the secondly placing including deactivating the phase locked loop and operating the frequency locked loop with a reference clock signal and a frequency set point depending on the reader carrier frequency and the frequency of the reference clock signal.

Abstract: Radio frequency (RF) communication systems with coexistence management are provided herein. In certain embodiments, a method of coexistence management in a mobile device includes processing an RF receive signal to generate a digital baseband receive signal using a receive channel of a first transceiver, processing a first RF observation signal to generate a first digital observation signal using a first observation channel of the first transceiver, generating spectral regrowth observation data based on processing process the first digital observation signal using a first spectral regrowth baseband sampling circuit of the first transceiver, and compensating the digital baseband receive signal for RF signal leakage based on the spectral regrowth observation data and on direct transmit leakage observation data using a discrete time cancellation circuit of the first transceiver.

Abstract: The present application relates to a data transmission method for a Bluetooth card reader and an electronic device.

Abstract: Wireless radio device alignment tools and methods. Described herein are methods for point-to-point alignment of wireless radio devices and alignment tools to assist in aligning wireless radio devices. These alignment tools may automatically or manually receive location information and may use a local compass function to determine a rough or initial alignment and additional tools to provide further (fine) alignment based on calculated and actual signal strength between the two devices being aligned.

Abstract: A wireless device determines to deactivate an antenna panel of a plurality of antenna panels at the wireless device. An uplink signal indicating the determination to deactivate the antenna panel is transmitted. A time window based on transmitting the uplink signal is started. The antenna panel is deactivated based on an expiry of the time window.

Abstract: A system, device and processes that can provide a user with a way to prevent the loss or misplacement of their eyeglass frames (or other item) in the situation in which the eyeglasses (or other item) has been taken off and placed on a table, or otherwise left behind, etc. Embodiments of the invention incorporate a wireless communications technology, such as a Bluetooth module or similar functional module that is embedded into the eyeglass frame during manufacture and is therefore an integral part of the frame. In the case of an item other than eyeglass frames, the Bluetooth module may be embedded into a clasp, link, setting, or a part of a device (such as a laptop computer).

Abstract: A wireless communications and light emitting diode (LED) device compatible with conventional helmet structures and adapted, while the helmet is being worn, to effectively illuminate likely illumination targets with an internal lighting device. More particularly, the accessories and applications according to various embodiments of the present invention make use of wireless communication and lighting devices to provide advantages in helmet use, with the ability to answer phone calls, communicate between rider-to-rider or rider-to-passenger, intercom talk hands free, ability to listen to music or voice instructions from GPS navigation, and noise cancelation, for safety, and convenience for the end user.

Abstract: A network-enabled smart apparatus has a data processing system, at least one operational system, wide area and local network communication interfaces, and a memory. The memory has stored therein apparatus identification information, at least one service application, and an activation application. The activation application causes the data processing system to establish an internet connection and create an NFC-enabled web page. The data processing system transmits, to the user device instructions to navigate to the NFC-enabled web page and instructions for the user to tap an NFC-enabled smart card to the user device. The apparatus data processing system reads, via the NFC-enabled web page, NFC information transmitted to the user device by the smart transaction card. The application causes the apparatus to transmit the NFC information to a service administration server, and receive, from the service administration server, a service activation command.

Abstract: A transaction device includes a transceiver for receiving a first message from a first smart device and a second message from a second smart devices at distances greater than a first distance, a processor for determining a first payload and first identifier for the first smart device from the first message and for determining a second payload and second identifier for the second smart device from the second message, an NFC device for receiving an NFC identifier from a smart device at a distance less than the first distance, wherein the processor is for determining whether the NFC identifier matches the first identifier data or the second identifier data, for processing the first payload when the NFC identifier matches the first identifier data, and for processing the second payload when the NFC identifier matches the second identifier data.

Abstract: A facility for establishing a wireless connection between first and second devices is described. On the first device, the facility causes a one-time pairing code to be displayed, then wirelessly receives from the second device a wireless connection solicitation having contents. On the first device, in response to the receiving, the facility determines whether the contents reflect the one-time pairing code. In response to determining that the contents reflect the one-time pairing code, on the first device, the facility establishes the wireless connection between the first and second devices.

Abstract: Aspects of this disclosure relate to an acoustic wave device that includes high velocity layers on opposing sides of a piezoelectric layer. A low velocity layer can be positioned between the piezoelectric layer and one of the high velocity layers, in which the low velocity layer has a lower acoustic velocity than the high velocity layers. The acoustic wave device can be configured to generate a boundary acoustic wave such that acoustic energy is concentrated at a boundary of the piezoelectric layer and the low velocity layer.

Abstract: A first device having a transceiver and an antenna operatively connected to the transceiver and a second device having a transceiver and an antenna operatively connected to the transceiver, the first device in operative communication with the first device through a communications linkage separate from the transceiver of the first device and the transceiver of the second device. The first device is adapted to wirelessly communicate with a remote device through the transceiver of the first device. The second device is adapted to wirelessly communicate with the remote device through the transceiver of the second device. The system is configured to evaluate the wireless connection between the first device and the remote device and to evaluate the wireless communication between the second device and the remote device and determine whether the first device or the second device has a better connection.

Abstract: For example, a Bluetooth (BT) device may be configured to identify metadata in broadcast messages received at the BT device from a plurality of BT audio source devices, wherein a broadcast message from a BT audio source device includes metadata indicating one or more attributes of audio data broadcasted by the BT audio source device; and select from the plurality of BT audio source devices one or more recommended BT audio source devices for a BT audio connection, the one or more recommended BT audio source devices selected from the plurality of BT audio source devices based on the metadata in the broadcast messages and based on a user profile corresponding to a user of the BT device, the user profile including personalized preference information corresponding to a preference of the user for selection of audio content.