Abstract: Provided are a security protection method and apparatus. The security protection method includes: generating software versions based on diversity compilation, and constructing a software version pool using the software versions as heterogeneous functional equivalents; and dynamically deploying a software version on a network element according to the software version pool.

Abstract: In one embodiment, instead of using map data, a relative coordinate system is utilized to assist perception of the driving environment surrounding an ADV for some driving situations. One of such driving situations is driving on a highway. Typically, a highway has fewer intersections and exits. The relative coordinate system is utilized based on the relative lane configuration and relative obstacle information to control the ADV to simply follow the lane and avoid potential collision with any obstacles discovered within the road, without having to use map data. Once the relative lane configuration and obstacle information have been determined, regular path and speed planning and optimization can be performed to generate a trajectory to drive the ADV. Such a perception system is referred to as a relative perception system based on a relative coordinate system.

Abstract: The disclosure provides a remote control device, a piezoelectric laser pointer, and a remote control system. The remote control device includes a housing, and further includes: a power generator, mounted inside the housing and including a press mechanism and a power generating mechanism, where after being pressed by the press mechanism, the power generating mechanism is deformed under stress and generates electricity; a circuit controller, mounted inside the housing and electrically connected to the power generator; and a signal transceiver, mounted inside the housing, electrically connected to the circuit controller, and configured to transmit and receive signals. In the disclosure, the power generating mechanism generates power after being pressed by the press mechanism, and the power is transferred to the circuit controller, so that the signal transceiver is powered on. Dry batteries are no longer used, thus avoiding environmental pollution caused by used dry batteries.

Abstract: A tidal current generating unit, including a turbine, a hub, a generator, a bearing set and a fixed flange. The turbine is connected to the rotor of the generator through the hub, and the rotor is rotatably mounted on the outer circumference of the stator of the generator via the bearing set, and the turbine drives the rotating component to rotate to generate electricity. A density of a blade is much smaller than a density of the seawater, such that the blade has a sufficient buoyancy that offsets the gravity of the rotating component in seawater, and the load of the bearing sets is reduced. The blade is a backswept blade and the hydrodynamic central axis of the blade is inclined from a flange central axis of the blade at a first angle, and the blade is able to automatically change the pitch without relying on an external force.

Abstract: In one embodiment, instead of using map data, a relative coordinate system is utilized to assist perception of the driving environment surrounding an ADV for some driving situations. One of such driving situations is driving on a highway. Typically, a highway has fewer intersections and exits. The relative coordinate system is utilized based on the relative lane configuration and relative obstacle information to control the ADV to simply follow the lane and avoid potential collision with any obstacles discovered within the road, without having to use map data. Once the relative lane configuration and obstacle information have been determined, regular path and speed planning and optimization can be performed to generate a trajectory to drive the ADV. Such a perception system is referred to as a relative perception system based on a relative coordinate system.

Abstract: A tidal current generating unit, including a turbine, a hub, a generator, a bearing set and a fixed flange. The turbine is connected to the rotor of the generator through the hub, and the rotor is rotatably mounted on the outer circumference of the stator of the generator via the bearing set, and the turbine drives the rotating component to rotate to generate electricity. A density of a blade is much smaller than a density of the seawater, such that the blade has a sufficient buoyancy that offsets the gravity of the rotating component in seawater, and the load of the bearing sets is reduced. The blade is a backswept blade and the hydrodynamic central axis of the blade is inclined from a flange central axis of the blade at a first angle, and the blade is able to automatically change the pitch without relying on an external force.

Abstract: In one embodiment, in response to a route from a source location to a target location, the route is analyzed to identify a list of one or more driving scenarios along the route that match one or more predetermined driving scenarios. The route is segmented into a list of route segments based on the driving scenarios. At least one of the route segments corresponds to one of the identified driving scenarios. A path is generated based on the route segments for driving an autonomous driving vehicle from the source location to the target location. The path includes a number of path segments corresponding to the route segments. At least one of the path segments of the path is determined based on a preconfigured path segment of a predetermined driving scenario associated with the path segment, without having to calculating the same at real time.

Abstract: A lane departure detection system detects that an autonomous driving vehicle (ADV) is departing from the lane in which the ADV is driving based on sensor data captured when the ADV contact a deceleration curb such as a speed bump laid across the lane. When the ADV contacts the deceleration curb, the lane departure detection system detects and calculates an angle of a moving direction of the ADV vs a longitudinal direction of the deceleration curb. Based on the angle, the system calculates how much the moving direction of the ADV is off compared to a lane direction of the lane. The lane direction is typically substantially perpendicular to the longitudinal direction of the deceleration curb. A control command such as a speed control command and/or a steering control command is generated based on the angle to correct the moving direction of the ADV.

Abstract: In one embodiment, when an ADV is driving on a road segment, a driving parameter is recorded in response to a first control command. A difference between the first driving parameter and a target driving parameter corresponding to the first control command is determined. In response to determining that the difference exceeds a predetermined threshold, a second control command is issued to compensate the difference and cause the ADV to drive with a second driving parameter closer to the target driving parameter. A slope status of the road segment is derived based on at least the second control command. Map data of a map corresponding to the road segment of the road is updated based on the derived slope status. The updated map can be utilized to generate and issue proper control commands in view of the slope status of the road when the ADV drives on the same road subsequently.

Abstract: In one embodiment, a lane departure detection system detects at a first point in time that a wheel of an ADV rolls onto a lane curb disposed on an edge of a lane in which the ADV is moving. The system detects at a second point in time that the wheel of the ADV rolls off the lane curb of the lane. The system calculates an angle between a moving direction of the ADV and a lane direction of the lane based on the time difference between the first point in time and the second point in time in view of a current speed of the ADV. The system then generates a control command based on the angle to adjust the moving direction of the ADV in order to prevent the ADV from further drifting off the lane direction of the lane.

Abstract: In one embodiment, in response to a route from a source location to a target location, the route is analyzed to identify a list of one or more driving scenarios along the route that match one or more predetermined driving scenarios. The route is segmented into a list of route segments based on the driving scenarios. At least one of the route segments corresponds to one of the identified driving scenarios. A path is generated based on the route segments for driving an autonomous driving vehicle from the source location to the target location. The path includes a number of path segments corresponding to the route segments. At least one of the path segments of the path is determined based on a preconfigured path segment of a predetermined driving scenario associated with the path segment, without having to calculating the same at real time.

Abstract: In one embodiment, when an ADV is driving on a road segment, a driving parameter is recorded in response to a first control command. A difference between the first driving parameter and a target driving parameter corresponding to the first control command is determined. In response to determining that the difference exceeds a predetermined threshold, a second control command is issued to compensate the difference and cause the ADV to drive with a second driving parameter closer to the target driving parameter. A slope status of the road segment is derived based on at least the second control command. Map data of a map corresponding to the road segment of the road is updated based on the derived slope status. The updated map can be utilized to generate and issue proper control commands in view of the slope status of the road when the ADV drives on the same road subsequently.

Abstract: A lane departure detection system detects that an autonomous driving vehicle (ADV) is departing from the lane in which the ADV is driving based on sensor data captured when the ADV contact a deceleration curb such as a speed bump laid across the lane. When the ADV contacts the deceleration curb, the lane departure detection system detects and calculates an angle of a moving direction of the ADV vs a longitudinal direction of the deceleration curb. Based on the angle, the system calculates how much the moving direction of the ADV is off compared to a lane direction of the lane. The lane direction is typically substantially perpendicular to the longitudinal direction of the deceleration curb. A control command such as a speed control command and/or a steering control command is generated based on the angle to correct the moving direction of the ADV.

Abstract: In one embodiment, a lane departure detection system detects at a first point in time that a wheel of an ADV rolls onto a lane curb disposed on an edge of a lane in which the ADV is moving. The system detects at a second point in time that the wheel of the ADV rolls off the lane curb of the lane. The system calculates an angle between a moving direction of the ADV and a lane direction of the lane based on the time difference between the first point in time and the second point in time in view of a current speed of the ADV. The system then generates a control command based on the angle to adjust the moving direction of the ADV in order to prevent the ADV from further drifting off the lane direction of the lane.

Abstract: Embodiments of the disclosure provide a method and apparatus for resource sharing for D2D and cellular communications in a multicell network. The method comprises steps of: acquiring CSI on channels relating to D2D pair and a plurality of cellular users that potentially share resources with the D2D pair; and determining D2D transmit powers of the D2D pair on a plurality of frequency bands allocated to the plurality of cellular users and cellular transmit powers of the plurality of cellular users based on the CSI, to improve throughput of the multicell network.

Abstract: The present disclosure provides a method and an apparatus of resource sharing for D2D and cellular communications. The method may comprise: determining a cellular user set containing potential cellular users that may share resources with a D2D pair; and determining transmit power of the D2D pair on a frequency band of at least one cellular user in the cellular user set and transmit power of the at least one cellular user through maximizing throughput of the D2D pair with a quality of service (QoS) constraint and a power budget constraint of each of the potential cellular users and a transmit power constraint of the D2D pair. With embodiments of the present disclosure, it may provide a non-orthogonal resource sharing solution in which a D2D pair can reuse resources of the cellular users as more as possible while the QoS of all the cellular users are guaranteed, whereby the performance of the D2D user may be improved greatly.

Abstract: Embodiments of the disclosure provide a method and apparatus for resource sharing for D2D and cellular communications in a multicell network. The method comprises steps of: acquiring CSI on channels relating to D2D pair and a plurality of cellular users that potentially share resources with the D2D pair; and determining D2D transmit powers of the D2D pair on a plurality of frequency bands allocated to the plurality of cellular users and cellular transmit powers of the plurality of cellular users based on the CSI, to improve throughput of the multicell network.

Abstract: The present disclosure provides a method and an apparatus of resource sharing for D2D and cellular communications. The method may comprise: determining a cellular user set containing potential cellular users that may share resources with a D2D pair; and determining transmit power of the D2D pair on a frequency band of at least one cellular user in the cellular user set and transmit power of the at least one cellular user through maximizing throughput of the D2D pair with a quality of service (QoS) constraint and a power budget constraint of each of the potential cellular users and a transmit power constraint of the D2D pair. With embodiments of the present disclosure, it may provide a non-orthogonal resource sharing solution in which a D2D pair can reuse resources of the cellular users as more as possible while the QoS of all the cellular users are guaranteed, whereby the performance of the D2D user may be improved greatly.

Abstract: Computer-implemented systems and methods are provided for optimizing hydrocarbon recovery from subsurface formations, including subsurface formations having bottom water or edgewater. A system and method can be configured to receive data indicative of by-pass oil areas in the subsurface formation from reservoir simulation, identify flow barriers in the subsurface formation based on the by-pass oil areas identified by the reservoir simulation, and predict the lateral extension of the identified flow barriers in the subsurface formation. Infill horizontal wells can be placed at areas of the subsurface formation relative to the flow barriers such that production from a horizontal well in the subsurface formation optimizes hydrocarbon recovery.

Abstract: A wireless transmitter exhibits improved power de-rating reduction, which improves the power efficiency of non-constant envelop communication systems by mapping N first samples of a first discrete Fourier transform (DFT) of a group of coded symbols to M sub-carriers according to a first sub-carrier mapping rule (212), performing a first inverse DFT (IDFT) on the M sub-carriers to provide M second samples (214), clipping the M second samples according to a clipping rule to provide M third samples (216), performing a second DFT on the M third samples (218), and applying a frequency domain mask to generate M clipped samples (220) which may be mapped to O subcarriers according to a predetermined second subcarrier mapping rule. The transmitter may be advantageously implemented within a single carrier transmission scheme, such as a single carrier-frequency division multiple access (SC-FDMA) uplink transmission scheme.