Abstract: A wireless communication device and a method for IQ calibration are provided. The device includes a transmitting unit for generating a set of RF transmitting signals based on a set of digital baseband signals, each of the set of RF transmitting signals has IQ components; a receiving unit for generating a set of digital feedback signals based on a set of RF receiving signals obtained from the set of RF transmitting signals; a processing unit for obtaining a first set of compensation coefficients for the transmitting unit and a second set of compensation coefficients for the receiving unit based on the set of digital baseband signals and the set of digital feedback signals with an IQ calibration model, the IQ calibration model includes a first high-order term set about a nonlinear error in the transmitting unit and a second high-order term set bout a nonlinear error in the receiving unit.

Abstract: The present disclosure discloses an antenna switching circuit, including: a built-in antenna connected to a first port of an antenna switching unit; and an external antenna interface connected to a second port of the antenna switching unit, and the external antenna interface is used for linking an external antenna, and the external antenna has a ground point and a feed point between which a direct current loop is formed; the antenna switching unit configured to communicate with one of the built-in antenna and the external antenna under the control of different control signals. The solution provided by the present disclosure can improve the convenience and accuracy of antenna switching.

Abstract: The present disclosure provides a method for wireless bridging. The method may include: determining a first score for each of at least one available frequency band supported by a wireless bridge device based on a first status information of the wireless bridge device and a second status information of a wireless access device; and selecting, one or more of the at least one available frequency band to bridge with the wireless access device based on a first capability information of the wireless bridge device, a second capability information of the wireless access device, and the first score for each of the at least one available frequency band.

Abstract: Disclosed are a method, an access point (AP) and a computer program product for determining location of the AP. A location information of a communication device wirelessly coupled to the AP may be received, the location information including a first location uncertainty with a first confidence level. A distance between the AP and the communication device may be determined based at least on a measured signal strength of a signal received from the communication device. Location information of the AP may be determined based at least on the distance and the location information of the communication device. A second location uncertainty with a second confidence level may be determined based on the distance and the first location uncertainty as at least a portion of the location information of the AP.

Abstract: This disclosure provides a communication device and a method for backhaul link optimization. The communication device includes a memory; and one or more processors coupled to the memory, and configured to: obtain, a channel measuring result of a second communication device on channel(s) used by one or more third communication devices, wherein at least one third communication device uses at least two channels, and wherein the channel measuring result includes measuring results of the at least two channels; determine a total channel quality score of the channel(s) used by each third communication device based on the obtained channel measuring result; and determine, from the one or more third communication device, a target communication device with which the second communication device establishes a backhaul link, based on determined total channel quality score.

Abstract: A method and apparatus for controlling multicast frame message forwarding, a communication device, and a computer-readable medium are provided. The method includes: acquiring a multicast frame message; and inhibiting forwarding the multicast frame message, in response to a number of previously forwarded duplicate messages of the multicast frame message within a predetermined time period reaching a predetermined threshold.

Abstract: This disclosure provides a method, device and a computer program product for managing metadata of a file system. The method may include: determining a data structure of the metadata based on a type of the file system; deriving a reference value for a first field of the metadata based on the data structure of the metadata and a protocol of the file system; and overwriting the first field of the metadata with the reference value in response to an actual value of the first field of the metadata being not equal to the reference value and there being no backup for the metadata.

Abstract: The disclosure provides a first router in a VoIP-capable Mesh network, wherein the first router operates in an agent-mode. The first router includes: a memory; and one or more processors operatively coupled to the memory, the one or more processors configured to: detect a connection of a VoIP-capable endpoint device to the first router through a voice physical interface, wherein the voice physical interface is a module that bridges the VoIP-capable endpoint device and the first router with at least one connection type; obtain device information of the VoIP-capable endpoint device; and based at least part on the device information of the VoIP-capable endpoint device, transmit the registration request to a second router operating in a controller-mode within the VoIP-capable mesh network.

Abstract: The disclosure provides an image signal processing method and apparatus thereof. The image signal processing method may include: performing image signal processing on a current image frame in an image stream based on image signal processing (ISP) parameter(s) related to image details; encoding the image signal processed current image frame to generate an encoded current image frame; adaptively adjusting the ISP parameter(s) based on encoding load for the current image frame; performing image signal processing on a subsequent image frame in the image stream based on the adaptively adjusted ISP parameter(s); and encoding the image signal processed subsequent image frame to generate a subsequent encoded image frame.

Abstract: The present disclosure provides a cleaning robot docking station and a cleaning system with a cleaning robot and a cleaning robot docking station. The cleaning robot docking station includes an evaporation apparatus, having an evaporating dish for holding liquid and a heater used to heat the liquid in the evaporating dish to evaporate the liquid; a condensation apparatus, configured to receive a first gas from the evaporation apparatus, condense the water vapor in the first gas, and discharge a second gas. The second gas is heated before being discharged from the cleaning robot docking station or before entering the evaporation apparatus.

Abstract: A method, apparatus, and computer-readable medium display a video with a set of tags selectively overlaid on the video. The method causes a display device to display a sequence of video frames. The video depicts a plurality of visually perceptible items, and the video frames as displayed do not include any tags, thereby depicting the video in a tagless mode. The method also receives a signal requesting that the video be displayed in a tag mode. In response to receipt of said signal, the method overlays one or more visually perceptible tags on the video frames at specified positions, thereby causing the display device to display the video in a tag mode. Each of the overlaid tags is associated with at least one respective visually perceptible item appearing in the video.

Abstract: The present disclosure provides a method, a node and a network device in the wireless network. A method for wireless communication at a node in a wireless network according to the embodiment of the present disclosure includes obtaining initial values of one or more parameters of a dynamic power control model; determining a first optimized result to the initial values of one or more parameters for reducing a loss function, by using environment information of the node; transmitting first information indicating the first optimized result of the one or more parameters to a network device; receiving second information indicating a second optimized result of the one or more parameters for the dynamic power control model from the network device, wherein the second optimized result of the one or more parameters are determined by the network device based at least in part on the first information.

Abstract: The present disclosure provides a method, access point (AP) device, wireless communication system and computer program product for scheduling wireless transmissions. The method is implemented in an AP device and includes: obtaining a previous scheduled time of each of a plurality of client devices at which each client device was scheduled by the AP during a respective previous scheduling cycle; determining, for each of the plurality of client devices, a scheduling weight of the client device based on a time interval from the previous scheduled time of the client device to a current scheduling cycle; and scheduling a wireless transmission to at least one of the plurality of client devices for the current scheduling cycle based on the scheduling weights.

Abstract: Aspects of the present disclosure relate to an antenna radiation device comprising a loop antenna, a dipole antenna, a first switch and a second switch. A first end of the loop antenna is connected to a first power feeding point, and a second end of the loop antenna is connected to a Ground. The dipole antenna includes a first radiation branch and a second radiation branch. The first radiation branch is connected to a first side of the loop antenna via the first switch, the second radiation branch is connected to a second side of the loop antenna via the second switch, and the first side and the second side are symmetrical about a longitudinal axis of the loop antenna. The present disclosure also relates to an antenna apparatus and an antenna system having such an antenna radiation device.

Abstract: The present disclosure provides a method for removing shading of an image, including: acquiring an original image having a shading; and inputting the original image into a trained shading removing neural network to obtain a shading removed image corresponding to the original image, wherein the shading removing neural network including: an image decomposition unit, configured to decompose the original image into a low-frequency component and a set of high-frequency component using Laplacian Pyramid Mechanism; a low-frequency subnetwork, configured to generate a shading removed low-frequency component based on the low-frequency component; a high-frequency subnetwork, configured to generate a set of shading removed high-frequency component based on the shading removed low-frequency component and the set of high-frequency component; and an image synthesis unit, configured to generate the shading removed image by synthesizing the shading removed low-frequency component and the set of shading removed high-frequency

Abstract: The present disclosure provides a wireless communication device, method, system and computer program product for supporting BA mechanism. The wireless communication method includes: receiving, from a peer wireless communication device, a support indication for sparse block acknowledgment (BA) bitmap condensation for a plurality of data frames to be communicated between the wireless communication device and the peer wireless communication device in a BA session; and transmitting, to the peer wireless communication device, a condensed BA bitmap for the BA session based on the support indication.

Abstract: Disclosed are a method, an access point (AP) and a computer program product for determining location of the AP. A location information of a communication device wirelessly coupled to the AP may be received, the location information including a first location uncertainty with a first confidence level. A distance between the AP and the communication device may be determined based at least on a measured signal strength of a signal received from the communication device. Location information of the AP may be determined based at least on the distance and the location information of the communication device. A second location uncertainty with a second confidence level may be determined based on the distance and the first location uncertainty as at least a portion of the location information of the AP.

Abstract: This disclosure provides a method and a doorbell device for capturing images by a camera of the doorbell device. The method includes: capturing a first image by the camera with a first set of image capturing parameter values; identifying an environmental optical source class based on a doorbell environment to be monitored by the camera of the doorbell device and an optical source condition illuminating the doorbell environment according to the first image; selecting a second set of image capturing parameter values according to the identified environmental optical source class; and capturing a second image by the camera with the second set of image capturing parameter values.

Abstract: A method and apparatus for controlling multicast frame message forwarding, a communication device, and a computer-readable medium are provided. The method includes: acquiring a multicast frame message; and inhibiting forwarding the multicast frame message, in response to a number of previously forwarded duplicate messages of the multicast frame message within a predetermined time period reaching a predetermined threshold.

Abstract: This disclosure provides a method, device and a computer program product for managing metadata of a file system. The method may include: determining a data structure of the metadata based on a type of the file system; deriving a reference value for a first field of the metadata based on the data structure of the metadata and a protocol of the file system; and overwriting the first field of the metadata with the reference value in response to an actual value of the first field of the metadata being not equal to the reference value and there being no backup for the metadata.