| Patent application number | Description | Published |
|---|
| 20090009322 | System and method for position location in an enclosed environment - A system and method are disclosed for position location in an enclosed environment. In at least one embodiment, the system includes an enclosed environment with several distributed RFID transponders and an RFID processing unit for wireless communication with the RFID transponders via an electromagnetic coupling field. In each of the RFID transponders, an identifier assigned to the respective position of the RFID transponder in relation to the enclosed environment is stored. In at least one embodiment, the RFID transponders and the RFID processing unit are configured in such a way that if the RFID processing unit is positioned such that at least one RFID transponder is within a transmission range of the electromagnetic coupling field, the identifier of the RFID transponder is automatically transmitted to the RFID processing unit. | 01-08-2009 |
| 20090265550 | Method and arrangement for transmitting data in a communication system that employs a multi-hop method - In a multi-hop network, packets are classified into header and user data for coded distribution. The header information, especially the multi-hop information, is separated in a coded manner from the user data, such that each network node need only decode the header in order to forward the packet. The header and the user data are guided, independently from each other, to the hardware of the respective device for separate coding, as if they were complete packets. A hardware accelerated coding of header and user data is possible using different keys. The header also contains integrity protection. | 10-22-2009 |
| 20090274055 | Method for Determining a Route in a Network and a Quality-Related Parameter for Said Route - A routing method for a network burdens the network with less routing messages. According to said method, routing hellos for calculating the link metrics are used. The method thus removes the need for metric beacons. | 11-05-2009 |
| 20100030912 | Method for the transmission of data in a communication network - A method for transmitting data in a communication network, features network management-controlled transmission of data via a data transmission channel that connects network nodes. According to the method, data is transmitted at a minimum desired transmission rate that results from a temporal usage of the data transmission channel. | 02-04-2010 |
| 20100039312 | Method and device for determining a position of a communication apparatus - A method and a device for determining a position of a communication apparatus is provided. To determine a position of a first apparatus a first signal is transmitted from a second apparatus to the first apparatus. A second signal is then transmitted from the first apparatus to the second apparatus as a response to the first signal, the first signal and the second signal being transmitted by way of at least two different mediums. Signal strength of the second signal received by the second apparatus and a transfer time from a first time of transmission of the first signal to a second time of receipt of the second signal are measured. The position of the first apparatus is finally calculated as a function of the measured signal strength of the received second signal and the measured transfer time. | 02-18-2010 |
| 20100042831 | Method and System for Secure Transmission of Data in an Ad Hoc Network - Using at least one network consisting of at least one node, a multi-hop communication system is formed in which data are received and forwarded from a transmitting first node to a second node receiving the data via at least one third node interposed between the first and the second node. For transmission, the data are subdivided into packets that have a useful data portion (payload) and at least one first control data portion associated with the multi-hop method and a second control data portion associated with the network. The data are encrypted using a first public key determined by the first node and the second node, but only the useful data portion is encrypted using the first public key. | 02-18-2010 |
| 20100195535 | Methods, Networks and Network Nodes for Selecting a Route - The invention relates to methods, networks and network nodes for setting up a route in a packet-switched network comprising network nodes which are connected to one another for data engineering purposes, where the route connects a starting node to a destination node through intermediate nodes. The route is set up with a distance correlation to a reference route which has already been set up in the network. | 08-05-2010 |
| 20100260094 | METHOD FOR TRANSMITTING DATA IN A WIRELESS RADIO NETWORK - A method for transmitting data in a wireless radio network having a multiplicity of base stations for wirelessly sending and receiving data, wherein the base stations are wirelessly networked such that each base station can communicate wirelessly with one or more adjacent base stations. Broadcast messages are transmitted between a mobile station for wirelessly sending and/or receiving data and the base stations and broadcast messages are also forwarded between the base stations. These broadcast messages do not have an associated explicit connection between two units in the radio network. Moreover, the mobile station which receives a broadcast message can process this message regardless of the base station from which it originates. This avoids so-called “hand offs,” which are used in the prior art to associate a mobile station with a new base station when the mobile station moves out of range of the earlier base station. These hand offs result in time delays which are unacceptable in safety-critical applications. The novel method is particularly suitable for use in traffic systems, particularly in rail traffic systems, in which, by way of example, a train is controlled via a central unit using the radio network. In such applications, it is particularly important for no relatively long delays to arise in the data transmission, since otherwise the safety of the traffic system is no longer assured. | 10-14-2010 |
| 20100260153 | METHOD FOR DATA TRANSMISSION IN A MESH MODE OF A WIRELESS COMMUNICATION NETWORK - In a method for data transmission in a mesh mode of a wireless communication network, which enables a decentralized transmission of data packets within data streams via communication links from one node to another node, data streams are classified in several service classes specifying quality requirements for data streams. Bandwidth reservations are performed between nodes of a communication link, each bandwidth reservation being dependent on the service class of the data stream to be transmitted via the communication link and comprising the exchange of control messages for reserving time slots for transmitting the data stream of the service class in subsequent data time frames via the communication link. The transmission of data streams is scheduled dependent on the service classes. The method is particularly used in the mesh mode of the standard IEEE 802.16 and enables a seamless coexistence of the point-to-multipoint mode and the mesh mode of the standard. | 10-14-2010 |
