Koninklijke Philips Corporation N.v.

U.S. Philips Corporation

Philips Electronics North America Corporation

Peter May

Christoph Herrmann

Yonggang Du

Samir N Hulyalkar

Chiu Yeung Ngo

Joerg Habetha

Francesc Dalmases

Begonya Otal

Georgios Orfanos

A method of operating a network node of a network, a network node, a network system, a computer-readable medium, and a program element A method () of operating a network node (-) of a network system (), comprising the steps of generating () a signal to be transmitted, selecting () one of a plurality of communication channels (-) of the network system () for transmitting the signal, and, in case that the selected channel (-) is not ready for transmitting the signal, selecting () another one of the plurality of communication channels (-) for transmitting the signal.

Method of operating a network node of a network, a network node, a network system, a computer-readable medium, and a program element

The invention relates to a wireless network defined as a group of wireless terminals and an assigned central station. After receiving requests for the wireless transmission of packets between a transmitting and a receiving terminal during a time multiplex frame, the central station assigns time slots within a following time multiplex frame for the transmission of packets from transmitting to receiving terminals. After reception of all the transmission requests, the central station determines a first subset of the group that intend to transmit to receiving terminals, and a second subset containing all transmitting terminals (of the group) that are not contained in the first subset. An order in which the transmitting terminals of the first subset will transmit is determined in accordance with the decreasing number of receiving terminals assigned to each transmitting terminal. The receiving terminals of the first subset are subdivided into a first group, and into a second group where the second group contains all the receiving terminals not contained in the first group, and the receiving terminals of the second group are selected for reception first in time.

Time slot sorting method for a wireless network

Centrally controlled wireless networks require reliable communications between the central controller and each of the stations within the wireless networks. The structure of a wireless network is often dynamic, or ad-hoc, as stations enter and exit the network, or are physically relocated. The selection of the central controller for the network may also be dynamic, either because the current central controller desires to exit the network, or because the communication between the current central controller and one or more of the stations is poor. This invention discloses a method and apparatus for assessing the quality of the communication paths among all stations in the network. This assessment is useful as a continual monitor of the quality of the network, and can be utilized to select an alternative central control station based upon the quality of communication paths to and from this station. Additionally, the quality assessment can be utilized to establish relay communication paths, as required.

Apparatus and method for peer-to-peer link monitoring of a wireless network with centralized control

The invention relates to a local area network operating in the asynchronous transfer mode, with a first transceiver (1 to 8, 54 to 57) which includes a radio device (33, 60) for transmitting cells to a plurality of other transceivers (1 to 21, 54 to 57). For a data exchange between the first and the other transceivers (1 to 21, 54 to 57) without cells being blocked, a radio device (49, 60) includes a first buffer memory (73) assigned to a respective other transceiver (1 to 21, 54 to 57). A first buffer memory (73) is used for storing a cell whose destination is another transceiver (1 to 21, 54 to 57) which is assigned to the respective first buffer memory (73).

Local area network with transceiver

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Aachen, Germany

Peter May