19 results about "Cellular frequencies" patented technology

This disclosure is directed to shared antenna tuning. An electronic device may receive a global navigation satellite system (GNSS) tune request to tune a shared antenna to a GNSS signal frequency. The electronic device may then tune the antenna to the GNSS signal frequency and enable a GNSS receiver. The electronic device may also receive a cellular tune request to tune the antenna to a cellular frequency. The electronic device may tune the antenna to a cellular frequency and may deactivate the GNSS receiver or blank the GNSS receiver. In some embodiments, the electronic device may also communicate with a Low Earth Orbit (LEO) satellite. During LEO satellite communication, the electronic device may transmit a signal to blank a GNSS L1 receiver to avoid signal interference with the LEO satellite communication, and activate a GNSS L5 receiver to receive GNSS signals.

A communication device includes a central processing unit (CPU); a non-transitory memory; and an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to provide the communication device in an environment; receive a radio frequency (RF) signal from an RFID reader at a plurality of locations in the industrial environment, wherein the RF signal comprises a frequency in the cellular frequency range; determine a receive signal strength (RSS) of the RF signal at each of the plurality of locations; determine the RSS of the RF signal at each of the plurality of locations; and generate a map of an RFID read zone in the industrial environment based on the RSS of the RF signal at the plurality of locations.

A communication device includes a central processing unit (CPU); a non-transitory memory; and an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to provide the communication device in an environment; receive a radio frequency (RF) signal from an RFID reader at a plurality of locations in the industrial environment, wherein the RF signal comprises a frequency in the cellular frequency range; determine a receive signal strength (RSS) of the RF signal at each of the plurality of locations; determine the RSS of the RF signal at each of the plurality of locations; and generate a map of an RFID read zone in the industrial environment based on the RSS of the RF signal at the plurality of locations.

The present invention proposes a method for solving the transmission characteristics of a cellular frequency selective surface. The implementation steps include: constructing a unit geometric model of the cellular frequency selective surface; performing mesh division on the unit geometric model; calculating the direction vector of the polarized plane wave in OXYZ; calculating the incident field at the excitation port in different modes; constructing a finite element matrix equation; performing matrix element substitution on the matrix equation; and obtaining the transmission characteristics of the cellular frequency selective surface. By using two vector edges of the excitation port and transforming the three-dimensional coordinate system into a three-dimensional local coordinate system, and calculating the wave numbers of the polarized plane wave in the three axial directions of the three-dimensional local coordinate system, the present invention calculates the incident field at the excitation port in different modes, avoiding the defect in the prior art that the incident field at the excitation port cannot be calculated in a coordinate system with two vector edges of a regular hexagon as the coordinate axes by using the finite element method, and achieving high-precision solution of the transmission characteristics of the cellular frequency selective surface.

The embodiment of the invention provides electronic equipment. The electronic device comprises an antenna assembly and a processor. The antenna assembly comprises a cellular antenna and a WiFi antenna. The cellular antenna is used for supporting a cellular frequency band; the WiFi antenna is used for supporting a WiFi frequency band; the processor is electrically connected with the antenna assembly and is used for detecting a first parameter value when the cellular antenna supports the cellular frequency band; the processor is used for comparing the first parameter value with a first preset threshold value; and when the first parameter value is smaller than the first preset threshold value, the processor starts the WiFi antenna as a working antenna so as to establish point-to-point communication with WiFi antennas of other terminal equipment, and communicates with the other terminal equipment through the WiFi frequency band.

A communication device includes a central processing unit (CPU); a non-transitory memory; and an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to provide the communication device in an environment; receive a radio frequency (RF) signal from an RFID reader at a plurality of locations in the industrial environment, wherein the RF signal comprises a frequency in the cellular frequency range; determine a receive signal strength (RSS) of the RF signal at each of the plurality of locations; determine the RSS of the RF signal at each of the plurality of locations; and generate a map of an RFID read zone in the industrial environment based on the RSS of the RF signal at the plurality of locations.

The utility model relates to an antenna structure and electronic equipment. The antenna structure comprises a first radiator, wherein the first radiator comprises a first upper frame point and a second upper frame point; the second radiator and the first radiator are matched to form a breaking joint, the second radiator comprises a third upper frame point, and the first upper frame point is located between the second upper frame point and the third upper frame point; the first feed is electrically connected to the first upper frame point, and the first feed is used for exciting a branch knot between the second upper frame point and the tail end close to the breaking joint and a branch knot between the third upper frame point and the tail end close to the breaking joint to cooperatively radiate satellite frequency band signals; the second feed is electrically connected to the second upper frame point, and the second feed excites the first radiator to radiate the cellular frequency band signal; and the third feed is electrically connected to the third upper frame point, and the third feed excites the first radiator to radiate the honeycomb frequency band signal.

The embodiment of the invention discloses a terminal equipment working method and device, terminal equipment and a storage medium, which are used for calling different target tuning parameter tables when the terminal equipment is detected to be in different target scenes and then selecting target tuning parameters for working according to the corresponding tuning parameter tables. The optimal performance of the terminal equipment in different target scenes can be ensured. The method comprises the steps of calling a target tuning parameter table corresponding to a target scene under the condition that the terminal equipment is detected to be in the target scene; selecting a target tuning parameter according to a target tuning parameter table; working according to the target tuning parameter; wherein the target scene is a scene in which the camera application program is in an open state and a cellular frequency band is registered, or a scene in which the camera application program is in a closed state and a cellular frequency band is registered, or a scene in which the camera application program is in an open state and a cellular frequency band is not registered.

Apparatus and methods for radio frequency front-end architectures are disclosed. In certain embodiments, radio frequency front-ends (RFFEs) are disclosed with a high level of integration and component reuse for antennas, power amplifiers (PAs), low noise amplifiers (LNAs), filters, and / or modules. For instance, 2 RFFE modules and 6 antennas can cover all sub-7 GHz frequency bands. Such frequency bands can include not only cellular frequency bands, but also frequency bands for WiFi and / or cellular vehicle-to-everything (CV2X).

A communication device includes a central processing unit (CPU); a non-transitory memory; and an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to provide the communication device in an environment; receive a radio frequency (RF) signal from an RFID reader at a plurality of locations in the industrial environment, wherein the RF signal comprises a frequency in the cellular frequency range; determine a receive signal strength (RSS) of the RF signal at each of the plurality of locations; determine the RSS of the RF signal at each of the plurality of locations; and generate a map of an RFID read zone in the industrial environment based on the RSS of the RF signal at the plurality of locations.

The invention relates to the technical field of vehicle-mounted communication, in particular to a vehicle-mounted wireless communication module real-time interference avoidance method based on edge computing, which comprises the following steps of: capturing burst pulse interference of the Internet of Vehicles and a cellular frequency band through marginalized spectrum sensing, extracting a time domain duty ratio and a spectrum mask feature, and forming a dynamic interference feature set; performing multi-level classification on interference sources by using a lightweight convolutional neural network, calculating confidence coefficients in combination with signal entropy values, and generating interference situation data; fusing the vehicle position, the road topology and the surrounding node state to construct a risk thermodynamic diagram, driving an edge engine to dynamically redistribute spectrum resources, and outputting a channel switching instruction; controlling a radio frequency front end to adjust power and modulate a coding scheme through an instruction, and synchronously acquiring link quality feedback; by comparing a feedback value with a safety threshold value in real time, a redundancy mechanism is triggered to realize seamless switching of a main link and a standby link, an uploaded log is encrypted, and high reliability and safety of communication are ensured.

The invention discloses a dual-mode satellite-borne base station device supporting NTN / cellular terminal direct connection satellites, which adopts a multi-beam structure, and each beam can be configured to access an NTN system terminal or access a cellular terminal direct connection satellite. The device comprises a baseband processing module which operates a dual-mode physical layer, comprises an event processing unit, a computing unit, a radio frequency driving unit and a data transfer unit, and is switched to an NTN physical layer mode or a physical layer mode directly connected with a cellular terminal through MAC layer configuration; the heterogeneous protocol stack module runs an NTN protocol stack and / or a satellite-borne protocol stack directly connected with a cellular terminal; the radio frequency front-end module adopts a broadband digital intermediate frequency architecture, covers an NTN frequency band and a cellular frequency band, and realizes multi-frequency-band parallel processing; and the beam resource management module is used for dynamically allocating the number of beams serving the NTN terminal and the number of beams serving the cellular terminal according to the number of terminal users. The method has the characteristics of high flexibility and high compatibility, and is suitable for satellite communication, a space-ground integrated network and a heterogeneous networking scene.

This disclosure relates to an antenna structure and an electronic device. The antenna structure includes: a first radiator for radiating satellite frequency band signals; a second radiator, perpendicular to the extension direction of the first radiator, for radiating cellular frequency band signals; a third radiator, which forms a gap with the end of the second radiator away from the first radiator, for radiating both satellite frequency band signals and cellular frequency band signals; and a first antenna switch, one end of which is grounded and the other end electrically connected to the end of the second radiator away from the third radiator; wherein, when the third radiator operates in satellite frequency band signal mode, the feed point of the second radiator switches to an off state, the first antenna switch switches to an on state, and the second radiator and the third radiator couple to generate resonance.

The invention relates to an antenna structure and electronic equipment. The antenna structure comprises a metal floor. The first radiator is used for radiating a cellular frequency band signal; the second radiator and the metal floor are arranged at an interval, the second radiator is used for radiating satellite frequency band signals, the second radiator is matched with the first radiator to form a first breaking joint, the tail end, deviating from the first radiator, of the second radiator is used for forming a second breaking joint, and the second radiator comprises a first upper frame point and a second upper frame point; the second upper frame point is close to the first breaking joint relative to the first upper frame point; one end of the first capacitor is grounded, and the other end is electrically connected to the first upper frame point; the first feeder is electrically connected to the second upper frame point; one end of the first switch circuit is grounded, the other end of the first switch circuit is electrically connected between the first feed and the second upper frame point, and the first switch circuit comprises a first switch and a first zero ohm resistor connected in series with the first switch; wherein at least when the first radiator radiates one kind of cellular frequency band signal, the first switch is in a closed state.

The digital microwave repeater comprises a power supply module, a monitoring and control module, a local coverage radio frequency unit, a first microwave frequency shift forwarding unit and a second microwave frequency shift forwarding unit which are arranged in the same case. The local coverage radio frequency unit amplifies and outputs a downlink signal of a cellular frequency band, and amplifies and returns an uplink signal; the first microwave frequency shift forwarding unit is provided with a first radio frequency port connected with an upper-level node, and frequency conversion forwarding between a cellular frequency band and a first microwave working frequency band is achieved. And the second microwave frequency shift forwarding unit is provided with a second radio frequency port connected with a next-level node, so that frequency conversion forwarding between the honeycomb frequency band and a second microwave working frequency band is realized. The local coverage radio frequency unit and the two paths of microwave frequency shift forwarding units are respectively provided with independent gain adjustable and automatic level control channels, and preset isolation between links is obtained through a shielding and filtering structure in a case, so that local coverage and microwave frequency shift forwarding are considered in single equipment, and self-excitation and intermodulation interference is inhibited.

The present application relates to the field of vehicle-mounted communication technology, and more particularly to a real-time interference avoidance method for a vehicle-mounted wireless communication module based on edge computing, which captures burst pulse interference in the vehicle networking and cellular frequency bands through edge spectrum sensing, extracts time domain duty cycle and spectrum mask features to form a dynamic interference feature set, classifies interference sources at multiple levels using a lightweight convolutional neural network, calculates confidence levels in combination with signal entropy values to generate interference situation data, constructs a risk heat map by fusing vehicle position, road topology and surrounding node state, drives the edge engine to dynamically redistribute spectrum resources, and outputs channel switching instructions; the instructions control the power and modulation coding scheme of the radio frequency front end, and synchronously collect link quality feedback; by comparing the feedback value with the safety threshold in real time, the standby link is seamlessly switched through the trigger of the redundancy mechanism, and logs are uploaded after encryption, ensuring high reliability and security of communication.

A service provider implements an enterprise mobile network delivery system providing enterprise customers with facilities to connect enterprise-provided white box radio unit hardware to public cloud-based network infrastructure to implement private wireless connectivity across a range of service types. The public infrastructure is provided by the service provider to support a universal enterprise mobile network operating over cellular frequencies including Citizens Broadband Radio Service (CBRS) in the 3.5 GHz range. The enterprise mobile network delivery system includes a portal having a user interface that enables enterprise customers to manage their individual private cellular networks and a radio registration entity that interfaces with the enterprise-provided hardware. The radio registration entity points the radios to appropriate functions in the universal enterprise mobile network and collects information from the radios to enable connectivity between the enterprise-provided radios and a core network of the universal enterprise mobile network.