Patent application number | Description | Published |
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 |
20110206020 | Method, network nodes and system for broadcast transmission of data - Disclosed are methods for broadcast transmission of data in frames having multiple time slots, from one transmitting node to multiple receiving nodes in a network, having the following steps: The sending out of at least one broadcast request message from the transmitter node to the receiver nodes, wherein the time slots available to the transmitter node for data transmission are indicated; the transmitting back of time-slot granting messages from the receiving nodes, wherein at least one of the time-slots available to the respective receiver node for data transmission is in each case indicated jointly with one at the transmitter node; the sending out of a confirmation message from the transmitter node to the neighboring receiving nodes, wherein all of the receiving nodes are indicated in the time-slot granting messages jointly with the time-slots available at the transmitter node; the performing of a broadcast transmission of the data from the transmitter node to the receiver nodes in the jointly available time slots. | 08-25-2011 |
20110268156 | Method for Pulse-Based Ultra-Broadband Communication between at least One Transmitting Node and at Least One Receiving Node - An ultra-broadband signal having a plurality of pulses is transmitted from one or more transmitting nodes to one or more receiving nodes. In the ultra-broadband signal, data are transmitted by pulses having a first pulse rate in a first data transmission and by pulses having a second pulse rate in at least one second data transmission, with each second pulse rate higher than the first pulse rate. The pulses having the second pulse rate are transmitted in intervals, during which no pulses having the first pulse rate are transmitted. This has the advantage that by utilizing time gaps between pulses of the first data transmission, the data of a second data transmission can be transmitted at a higher pulse rate. The transmitting and receiving nodes need not be coordinated explicitly or coordinated from the outside. | 11-03-2011 |
20120066492 | METHOD FOR MAKING SECURITY MECHANISMS AVAILABLE IN WIRELESS MESH NETWORKS - The invention relates to a method for making safety mechanisms available in wireless mesh networks which have a plurality of nodes that are interconnected by multi-hop communication in a wireless network meshed by mesh routing in the MAC layer, every node being active as a router to forward the data traffic of the other nodes. At least two differentiated levels of confidence are defined by a type of protection (ToP) the value of which represents a specific level of confidence for the nodes and data packets, the data packets being labeled with a ToP value in the mesh header, and at least one ToP value being allocated to the participating nodes, the nodes forwarding the data packet in the mesh network using the ToP values of the node and of the data packet if this ToP value combination is admissible in the node. | 03-15-2012 |
20120155365 | Method, Network Nodes and System for Broadcast Transmission of Data - A method for transmission of data requires a transmitting node sending a request message identifying at least one time slot that is available for the transmitting node to transmit a data transmission to a plurality of receiving nodes, a first receiving node transmitting a first time slot grant message in response to the request message, a second receiving node transmitting a second time slot grant message in response to the request message, the transmitting node receiving the first and second time slot grant messages, the transmitting node evaluating the first and second time slot grant messages to determine at least one available time slot for transmitting, the transmitting node transmitting at least one confirmation message to the first and second receiving nodes, and the transmitting node transmitting the data transmission in the at least one available time slot identified in the at least one confirmation message. | 06-21-2012 |
20120239933 | Methods and Devices Having a Key Distributor Function for Improving the Speed and Quality of a Handover - Embodiments relate to a key distributer node (AS) for a network, which comprises:
| 09-20-2012 |
20130136119 | Method and Apparatus for Wireless Transmission of Data Packets - Method for wire-free transmission of data packets between network nodes in a control network, wherein the data packets each have a preamble for synchronization consisting of a predetermined number of preamble symbols, and wherein during a first operating mode, each preamble-subsymbol of a preamble symbol in the preamble is coded by the phase angle of a transmitted single signal pulse, during a second operating mode to increase the signal recognition performance, for the preamble which is transmitted in the data packet, a signal pulse sequence for coding the preamble-subsymbol is transmitted instead of a single signal pulse, where the single signal pulse within the signal pulse sequence is transmitted repeatedly. | 05-30-2013 |