Nec Europe Ltd.

Nec Corporation

Vodafone Gmbh

Nec Deutschland Gmbh

Andreas Festag

Long Le

Roberto Baldessari

Wenhui Zhang

Gerhard P Fettweis

Ivan Gaspar

Maximilian Matthe

Luciano Mendes

Esteban Egea-López

Juan Jose Alcaraz Espin

Javier Vales-Alonso

Joan Garcia-Haro

Damiano Scanferla

Maximilian Matthé

Marc Torrent Moreno

Hannes Hartenstein

A radio transmission system based on a frequency divisional multiplexing method is described, wherein a transmit symbol comprises a plurality of data symbols assigned to at least two subcarriers. The information of symbols of one time slot is spread across the data symbols of subcarrier of the time slot to produce a transmit symbol being more robust to frequency selective channels.

Walsh-hadamard transformed GFDM radio transmission

A method for operating a plurality of stations in a cooperative station network, wherein each of the stations transmits signals and receives signals from other stations, includes determining a path loss between at least two of the stations. A carrier sense range for signals of a first station of the stations is determined based on the path loss and received power of signals from the other stations. A load on a dedicated signal exchange channel is determined based on the determined carrier sense range. A maximum output power for the first station is determined based on the determined load. The first station is operated by adjusting the output power of the first station to be, at least on average below the determined maximum output power for the first station.

Method and system for operating stations in a cooperative station network

A method for coordination of wireless transceivers of a network node, in particular for application in communication nodes of a vehicular network, wherein the network node is equipped with one or more wireless transceivers that are capable of simultaneously generating and/or receiving electromagnetic signals on different electromagnetic channels, the electromagnetic signals being potentially able to interfere with each other, is characterized in the steps of, for each pending packet transmission on a particular of the electromagnetic channels, checking the presence of ongoing and/or scheduled activity on one or more of the other of the electromagnetic channels, and deferring the pending packet transmission in case ongoing and/or scheduled activity is detected on one or more of the other of the electromagnetic channels, at least until the detected ongoing and/or scheduled activity on one or more of the other of the electromagnetic channels is completed. Furthermore, a corresponding network node is disclosed.

Method for coordination of wireless transceivers of a network node and network node

A method for performing communication in a self-organized wireless network, in particular a vehicular network, preferably based on the IEEE 802.11 MAC protocol, wherein the network includes a plurality of network nodes each being equipped with a communication system, wherein the communication systems generate periodic messages that are transmitted via a dedicated wireless communication channel, wherein each of the communication systems employs specific transmission parameters&#x2014;message interval and transmit power&#x2014;for transmitting the periodic messages, is characterized in that a reliability threshold for a maximum admissible load of the communication channel is defined, and that each network node, taking into consideration information on network nodes in its surrounding, establishes a relation between the message interval and the transmit power&#x2014;interval-power-relation&#x2014;such that the reliability threshold is not exceeded, wherein each network node applies its established interval-power-relation to adjust transmit power and/or message interval of its outgoing periodic messages.

Method for performing communication in a self-organized wireless network

A method for enabling multi-channel signaling in a communication network, including a multitude of communication nodes, wherein the communication among the communication nodes is performed by sending and receiving messages on communication channels including a control channel and at least one service channel, is characterized in that communication nodes embed information related to communication channel usage in messages sent on one of the communication channels, in particular the control channel, wherein the information indicates to others of the communication nodes a communication channel, in particular a service channel, intended to be employed for a specific service and/or application by the communication node having sent the respective message, and wherein communication nodes that receive a message including information related to communication channel usage forward the information by embedding the information in any of their own messages to be sent on a communication channel, in particular on the control channel.

Method for enabling multi-channel signaling in a communication network

Growing community of inventors

Ladenburg, Germany

Andreas Festag