Patent application number | Description | Published |
20080232311 | Method For Multi-Channel Resource Reservation in a Wireless Mesh Network - In a mesh network a multiband OFDM Alliance (MBOA) system provides higher channel access efficiency through a Distributed Reservation Protocol (DRP). A MBOA Physical layer (PHY) and a MBOA Medium Access Control (MAC) are used to increase the efficiency of the mesh network. | 09-25-2008 |
20100067506 | WIRELESS NETWORK - A wireless network ( | 03-18-2010 |
20100260046 | CONGESTION CONTROL IN A COMMUNICATION NETWORK BASED ON THE CSMA/CA PROTOCOL - The present invention relates to a congestion control method for a communication system supporting layered radio channel structure for communication between at least a first communication device and a second communication device, the layered structure comprising at least a physical layer and a medium access layer. The communication system is arranged to offer a first type of service with a first priority order and a second type of service with a second priority order, in the communication system messages comprising a preamble and a payload can be transmitted between devices, each message being separated by at least a period corresponding to a minimum allowable period between two messages. In the method the first communication device first (a) generates ( | 10-14-2010 |
20120106362 | DISTRIBUTED LEARNING METHOD FOR WIRELESS MESH NETWORKS - In a wireless mesh network, an algorithm is used by mesh points in the network to predict the success of and interference created by a new transmission opportunity. In particular, it is provided a method for mesh points, in a mesh network, to determine whether to transmit to another mesh point simultaneously while another transmission is taking place on the same communication link. A mesh point should not transmit to another mesh point if the mesh point's transmission interference disturbs a simultaneous transmission from another mesh point. Furthermore, a transmitting mesh point should not transmit to a receiving mesh point if the transmission will be disturbed at the receiving mesh point from interference from a simultaneous transmission from another mesh point. | 05-03-2012 |
20120106522 | DISTRIBUTED MEDIUM ACCESS PROTOCOL FOR WIRELESS MESH NETWORKS - This invention defines a medium access protocol for the support of mesh networking in wireless communications. It defines a phase for intra-cell and a phase for inter-cell traffic. During the inter-cell traffic a beacon phase is used for the reservation of transmissions. In this phase also information about the mesh topology is included and parallel transmission are supported. | 05-03-2012 |
20120307762 | METHOD FOR MULTI-CHANNEL RESOURCE RESERVATION IN A WIRELESS MESH NETWORK - In a mesh network a multiband OFDM Alliance (MBOA) system provides higher channel access efficiency through a Distributed Reservation Protocol (DRP). A MBOA Physical layer (PHY) and a MBOA Medium Access Control (MAC) are used to increase the efficiency of the mesh network. | 12-06-2012 |
Patent application number | Description | Published |
20100321235 | Imaging Method Utilizing a Synthetic Aperture, Method for Determining a Relative Velocity Between a Wave-Based Sensor and an Object, or Apparatus for Carrying Out the Methods - An imaging method is provided for imaging or locating an object with a wave-based sensor. A wave field emanates from the object as an object signal, with this object signal emanating from a sensor is received at a sensor position, and wherein the sensor(s) and the object assume a number of spatial positions with respect to each other and form a synthetic aperture, and an echo signal is sensed at each of these sensor positions, a number of function values is extracted from the echo signals, which are allocated to a space coordinate of the object, and a signal with a residual phase characteristic is formed from the function values. Based on a residual phase characteristic that is due to a deviation of real sensor positions from assumed or measured sensor positions, an image point, the object position or the relative movement of the object is determined. | 12-23-2010 |
20100324864 | Apparatus and Imaging Method with Synthetic Aperture for Determining an Incident Angle and/or a Distance - The invention relates to an imaging method with synthetic aperture for determining an incident angle and/or a distance of a sensor from at least one object in space, wherein at each of a number of aperture points one echo profile is sensed. Advantageously, for several angles assumed as the incident angle, one phase correction value and/or one distance correction value is calculated, adapted profiles are generated based on the echo profiles by adapting the phase with the phase correction value for each assumed angle and/or by shifting the distance with the distance correction value, for the assumed angle, the adapted profiles are summed or integrated, and a probability distribution is derived, and a probability value for the incident angle and/or for the distance is determined therefrom. A determination of the incident angle is also possible independently of the distance, wherein it is possible to only consider velocities or accelerations. | 12-23-2010 |
Patent application number | Description | Published |
20140133277 | COMPOSITE ASSEMBLY FOR A MOTOR VEHICLE - A composite assembly for a motor vehicle having at least one electroacoustic transducer for outputting sound waves and at least one wall element of the motor vehicle, behind which the transducer is mounted in a concealed manner, wherein an intermediate element for influencing the sound emission behavior is arranged between the transducer and the wall element, the intermediate element having a contact surface facing the wall element for passing on the sound waves. At least one recess is formed within the contact surface, in which recess no contact is made between the intermediate element and the wall element. In this way, it is possible to influence the emission characteristics of the electroacoustic transducer in a very flexible and need-oriented manner. | 05-15-2014 |
20140198620 | ENVIRONMENT MONITORING DEVICE IN A MOTOR VEHICLE AND METHOD FOR MONITORING THE ENVIRONMENT USING A CORRELATION - An environment monitoring device in a motor vehicle having a signal generating device for generating a transmitted signal, at least one ultrasonic transducer for converting electric oscillations into acoustic oscillations and/or vice versa, and an evaluation device which evaluates an electric received signal in order to determine distances to objects in an environment of the motor vehicle, wherein the signal generating device is linked to the at least one ultrasonic transducer so that the ultrasonic transducer emits an ultrasonic transmitted signal into the environment in accordance with the electric transmitted signal, and the evaluation device is connected to the at least one ultrasonic transducer or at least one further ultrasonic transducer in order to receive the electric received signal. Also disclosed is a method for monitoring an environment by using a cross-correlation. | 07-17-2014 |
20140369168 | METHOD AND DEVICE FOR DETECTING OBJECTS IN THE SURROUNDINGS OF A VEHICLE - A device and a method for detecting objects in the surroundings of a vehicle is provided. At least one reflection pattern is ascertained for at least one object class. Pulse echo measurements for m different transmitter/receiver geometries are performed. Echo signals in the pulse echo measurements are detected. Weights for the different objects of the corresponding class are calculated. The weight values thus ascertained are summed to form a weight, and the presence of objects of the at least one object class is ascertained using the weights thus ascertained. | 12-18-2014 |
20150078130 | DEVICE AND METHOD FOR LATERAL ENVIRONMENT DETECTION OF A MOTOR VEHICLE - A device for lateral environment detection of a motor vehicle and a method for the substantially simultaneous operation of a parking support device and a door protection device is provided. The parking support device and the door protection device perform an environment detection with structurally identical environmental sensors. In order to be able to operate these simultaneously or overlapping in time, without interference by cross echo pulse occurring, it is provided to operate the simultaneously operated environmental sensors at frequencies that are shifted relative to one another and of which at least one of the frequencies is also shifted with respect to a resonance frequency of the environmental sensors. | 03-19-2015 |
20150185188 | Ultrasonic Sensor Device Having An Improved Decoupling Ring And Motor Vehicle - The invention relates to an ultrasonic sensor device ( | 07-02-2015 |
20150192673 | Ultrasonic Sensor Arrangement Comprising an Ultrasonic Sensor in the Radiator Grill, Motor Vehicle and Corresponding Method - The invention relates to an ultrasonic sensor arrangement ( | 07-09-2015 |
20150198698 | Ultrasonic Sensor Device Comprising A Reinforcement Holder, Arrangement, Motor Vehicle And Corresponding Method - The invention relates to an ultrasonic sensor device ( | 07-16-2015 |