Abstract: Some aspects of this disclosure include apparatuses and methods for implementing request to send (RTS) and clear to transmit (CTS) frames and transmission rules for the RTS and CTS frame. For example, some aspects relate to an electronic device including a transceiver and one or more processors communicatively coupled to the transceiver. The one or more processors receive, using the transceiver, a request to send (RTS) frame from the second electronic device and determine, using the received RTS frame, a format for a clear to send (CTS) frame to use in response to the RTS frame. The one or more processors further transmit, using the transceiver, the CTS frame based on the determined format on at least one sub-channel on which the RTS frame was received and that the at least one sub-channel is idle.

Abstract: The present disclosure provides an image registration method and system for navigation in femoral neck fracture surgery, an electronic device, and a computer-readable storage medium. The method includes: obtaining femoral image data by a computed tomography (CT) imaging device before surgery and obtaining a surgical path planned by a doctor to generate a three-dimensional femoral image with the surgical path; obtaining, during the surgery, X-ray images photographed by an X-ray machine at different angles, and extracting feature points on each of the X-ray images; setting digitally reconstructured radiograph (DRR) virtual scene projection parameters based on a structure of the X-ray machine, projecting the three-dimensional femoral image with the surgical path to generate a plurality of DRR images, and extracting feature points on each of the DRR images; and automatically registering the DRR image and the X-ray image, and outputting a surgical path after registration.

Abstract: A media processing device includes: a print head; a housing supporting the print head, and defining chambers to receive a media supply, and a ribbon supply; a media guide coupled to the housing, and defining a portion of a media path extending from the media supply to the print head; a first sensor support affixed to the media guide on a first side of the media path, between the media path and a ribbon path extending from the ribbon chamber to the print head; a ribbon sensor on a ribbon-facing side of the first sensor support; a first media sensor on an opposite, media-facing side of the first sensor support; a second sensor support affixed to the media guide on a second side of the media path, opposite the first side of the media path; and a second media sensor on a media-facing side of the second sensor support.

Abstract: Provided herein is a paper cutter, including: a paper cutter housing which includes an accommodating space for accommodating a roll of paper to be cut, where a side wall of the paper cutter housing further includes two parallel guide rails, a holding portion is arranged on an outer wall of the paper cutter housing, and a pressure direction of the holding portion is capable of being perpendicular to a plane formed by the two parallel guide rails; and a paper cutting device which is connected to the side wall of the paper cutter housing and includes a cutter assembly, where the cutter assembly includes an object picking member and a cutter, and a direction corresponding to a cutting edge of the cutter is opposite to a paper feeding direction of the paper to be cut.

Abstract: Provided is a wrapper cutter, including a shell having an axially penetrating hollow structure. A notch extending along an axial direction is further formed in one side edge of the shell, and a cutting knife is fixedly arranged on an inner bottom wall of the notch. Supporting planes arranged axially are further arranged on a sidewall of the shell, can serve as contact planes between the wrapper cutter and a placing plane, and are used to perform positioning, force bearing and supporting in the case of wrapper cutting and assist the wrapper cutter to slide linearly.

Abstract: According to embodiments of the present disclosure, a first device determines one or more second devices to share a channel occupancy time (COT) for a sidelink transmission over an unlicensed spectrum bands. The first device transmits the information which indicates the COT to be shared by the first device and the one or more second devices. The second device determines a transmission gap within the COT and performs a LBT/CCA on the unlicensed spectrum bands based on the determined gap. In this way, it achieves sharing the COT among SL devices. It can improve spectrum efficiency and avoid resource waste.

Abstract: An electronic device (such as an access point) is described. This electronic device transmits an orthogonal frequency division multiple access (OFDMA) frame to a recipient electronic device (such as a client or a station). The OFDMA frame includes multiple predefined resource units (RUs) allocated to the recipient electronic device in a set of predefined RUs having associated frequency bandwidths. Moreover, the multiple predefined RUs include two or more first predefined RUs having a first number of tones less than a predefined amount, or two or more second predefined RUs having a second number of tones greater than or equal to the predefined amount. For example, the predefined amount may include 242 tones. Note that the multiple predefined RUs may have the same or different numbers of tones. Moreover, the electronic may receive an acknowledgment or a block acknowledgment from the recipient electronic device.

Abstract: A wrapper cutter includes a shell, and the shell includes a second shell and a first shell with a polygonal track structure. The wrapper cutter further includes: an open slot, one side of which is provided with a notch extending along a vertical direction; a cutting knife, fixed on the inner bottom wall of the notch; a rhombic indwelling notch, arranged at one side of the cutting knife; a fixed plate, configured for forcibly bending an introduced wrapper into an arc-shaped surface, so that the wrapper passing through the cut position reaches a maximum stiffness and tension; parallel guideways, a limiting slope for allowing the rolled wrapper to abut against the cutting knife being arranged between the parallel guideways. By adopting a polygonal three-dimensional supporting structure and the fixed plate, the rolled wrapper can reach a maximum tension, and hits the cutting edge to generate a maximum lateral component force.

Abstract: Provided is a wrapper cutter, including a shell having an axially penetrating hollow structure. A notch extending along an axial direction is further formed in one side edge of the shell, and a cutting knife is fixedly arranged on an inner bottom wall of the notch. Supporting planes arranged axially are further arranged on a sidewall of the shell, can serve as contact planes between the wrapper cutter and a placing plane, and are used to perform positioning, force bearing and supporting in the case of wrapper cutting and assist the wrapper cutter to slide linearly.

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including detecting a reception opportunity of a physical layer protocol data unit (PPDU) scheduled to be transmitted by a transmitter, where the PPDU includes a preamble and one or more media access control (MAC) PDUs (MPDUs); decoding the preamble of the PPDU; detecting that reception of the one or more MPDUs has failed; and in response to the detecting, preparing a Negative Acknowledgment (NACK) message for transmission to the transmitter.

Abstract: Some embodiments include an apparatus, method, and computer program product for access point (AP) power save enhancements. AP power save enhancements reduce power consumption for APs including multi-link device (MLD) APs, mobile APs and mobile AP stations. Some embodiments include an uplink (UL) multi-user (MU)-Request to Send (RTS) power save feature, that allows an AP to be available while operating in a low power receive (LPR) state (e.g., low power mode) and transition to a full power mode to receive data using a bandwidth greater than 20 MHz. Some embodiments include a Target Wake Time (TWT) UL MU-RTS AP power enhancement feature that allows an AP to operate in the LPR during a TWT service period (SP). Some embodiments allow mobile devices (e.g., a smart phone) to operate in as an AP (e.g., a mobile AP, a mobile AP station) and reduce power consumption.

Abstract: Methods, systems and apparatuses for managing roaming by access points (AP), a controller, and a wireless device are described. The wireless device can indicate intent to roam from a source AP to a target AP. The wireless device, APs, and controller can adjust delivery of uplink and/or downlink data in association with the roam.

Abstract: A purification method for detection of a strontium isotope in a silk cultural relic. The method includes: (1) enrichment of the strontium isotope: after cleaning the silk cultural relic, adding the silk cultural relic to a digestion agent for microwave digestion, and conducting evaporation drying; and adding a dried product to a nitric acid solution for centrifugal separation, and extracting a supernatant; and (2) purification of the strontium isotope: first, mixing 4?,4?(5?)-di-tert-butyldicyclohexano-18-crown-6 and a defoamer and adsorbed to a purified resin separation column, and pre-cleaning the purified resin separation column with a nitric acid solution; next, injecting the supernatant in step (1) into the purified resin separation column with a nitric acid solution as a carrier solution; and then, injecting an 84Sr solution and an elution solution into the purified resin separation column in sequence to obtain a separated and purified strontium solution.

Abstract: Provided herein is a paper cutter, including: a paper cutter housing which includes an accommodating space for accommodating a roll of paper to be cut, where a side wall of the paper cutter housing further includes two parallel guide rails, a holding portion is arranged on an outer wall of the paper cutter housing, and a pressure direction of the holding portion is capable of being perpendicular to a plane formed by the two parallel guide rails; and a paper cutting device which is connected to the side wall of the paper cutter housing and includes a cutter assembly, where the cutter assembly includes an object picking member and a cutter, and a direction corresponding to a cutting edge of the cutter is opposite to a paper feeding direction of the paper to be cut.

Abstract: Some embodiments include an apparatus, method, and computer program product for access point (AP)-assisted AP transition. Using AP-assisted AP transitions, when the STA is associated with a first access point (AP) and is transitioning to a second AP, a station (STA) can transmit to the second AP a control signal including a first indication for sequence number (SN) maintenance. The STA can receive from the second AP responsive to the first indication for SN maintenance, a first downlink (DL) transmission including a next SN. The next SN can be a continuation of an SN sequence utilized by the first AP for one or more previous DL transmissions.

Abstract: Systems and methods are described for connecting with LEO satellites while reducing emissions toward GEO satellite communications. A system to implement the instant techniques may include a system comprised of a user communications equipment and a LEO constellation. The user equipment (“UE”) may comprise a communications modem and an active antenna unit with a transmit and receive beamformer. In further implementations, the UE may include additional receive only beamformers. The LEO constellation can have a regenerative payload or bent pipe, and can include orbits at different altitudes. Methods as described herein may include a procedure by which the user equipment and LEO satellite work together to identify candidate serving satellites, and select the one that allows to meet the power density requirements to avoid interfering with the GEO satellites.

Abstract: Embodiments described herein relate to a system and method for providing flexible receiver configuration in wireless communication systems, such as 802.11 WLAN systems. In one embodiment, a wireless device may transmit a first data frame including first configuration information specifying a first configuration of the receiver to notify a remote device that the wireless device intends to configure its receiver according to the first configuration. After receiving an acknowledgement frame confirming the first configuration information, the wireless device may configure the receiver according to the first configuration. In another embodiment, a wireless device may receive a first data frame including first configuration information and further including a request that the wireless device configure its receiver according to the first configuration. In response, the wireless device may configure the receiver according to the first configuration.

Abstract: Systems, methods, and mechanisms for an out-of-band (OOB) ultra-wide band (UWB) channel arbitration and/or channel coordination scheme. A device may scan an arbitration channel for a first time period, and based on the scanning, that the arbitration channel is not in use. The device may perform, on the arbitration channel, a first channel access procedure and perform, on the UWB channel, UWB communications during a UWB channel transmission opportunity.

Abstract: A measurement device and a method for monitoring a condition of a patient are provided. The measurement device includes: a gas-guide apparatus, configured to operatively connect between an medical gas provider and a patient side of the measurement device, and deliver medical gas from the medical gas provider to the patient; and at least one sensing apparatus, placed on an outer surface of the gas-guide apparatus and configured to detect real-time measurement data of the medical gas passing through the gas-guide apparatus. In this way, the at least one sensing apparatus is placed on the outer surface of the gas-guide apparatus, since the measurement data is a relative value which indicates a change of internal environment of the gas-guide apparatus, this can also avoid a problem of contamination compared with setting a sensor inside a respiratory device, thus improving the security of the measurement.

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including obtaining data for transmission to a receiver; and generating a first component physical layer convergence protocol (PLCP) protocol data unit (PPDU) of a plurality of component PPDUs of a concatenated (C-PPDU), where the first component PPDU is directed to the receiver and includes at least a portion of the data.