Abstract: The system and method of the present invention provide a protocol for a device (400) to announce that a previously reserved time-period or time-slot is not (completely) used and becomes available, so that other devices can transmit during the unused time. The system and method are especially intended for systems with distributed medium reservation by the devices, i.e., those systems adhering to a distributed reservation protocol (DRP).

Abstract: In a centralised radio network consisting of several devices one device acts as master or network coordinator and has a transmission range. Basically, other devices of the network are able to adopt the role of a coordinator. This ability is used to enlarge the area of the network to a size larger than the transmission range of the master. A device asks its parent PNC to become a child PNC when a newly turned on device acts as a temporary PNC and broadcasts an initiation beacon indicating that it looks for a child PNC. The child PNC reports that it is available. The new device determines one of the available child PNCs to be its new master. The acknowledgment for the selected child PNC may be broadcasted to inform all the devices in the transmission range of the new device.

Abstract: A system and method is provided for incorporating host-device communication in wireless USB (WUSB). A host (101) either uses a multicast Distributed Reservation Protocol (DRP) frame on behalf of connected devices (102) to reserve wireless channel resources, a unicast DRP frame or Enhanced Distributed Channel Access (EDCA) with a Poll Frame. In the case of a unicast DRP frame the number of unicast frames sent for reservation depends on the number of connected devices (102).

Abstract: The invention relates to a network comprising a plurality of terminals. A transmitting terminal selects a modulation method in a first step at the beginning of a data transmission in which method a maximum permitted packet error rate for an estimated received-user-signal-to-noise-power ratio is remained under. In a second step the transmitting terminal determines the transmission power which is produced for a desired packet error rate for the modulation method selected in the first step.

Abstract: A network includes a plurality of terminals of which at least one terminal is provided for storing certain traffic ratios measured at predetermined distances between at least part of the terminals. At least one terminal is provided for ascertaining, based on the stored traffic ratio, whether a change of the function of network controller from one terminal to another is necessary.

Abstract: The invention relates to a dynamic network with a plurality of nodes, in which it is provided that—routing information is stored in local routing tables in nodes of the network,—the nodes send an update request to other nodes for updating the local routing tables, and—the addressed nodes send an update response with updated routing information to the requesting nodes.

Abstract: The invention relates to a network with several subnetworks, which are organized either decentrally or centrally and can be connected in each case each by bridge terminals, a proxy terminal for a bridge terminal being set up in at least one of the subnetworks, which proxy terminal during an absence (dictated by frequency, time, code, or other factors) of the bridge terminal accepts all data directed to the bridge terminal or to be forwarded thereby, temporarily stores the data, and forwards said data to the bridge terminal when this is present again.

Abstract: The invention relates to a dynamic network with a plurality of nodes, in which it is provided that—routing information is stored in local routing tables in nodes of the network, —the nodes send an update request to other nodes for updating the local routing tables, and—the addressed nodes send an update response with updated routing information to the requesting nodes.

Abstract: The invention relates to a network with several sub-networks (1,2,3) which each comprise a controller for controlling the sub-network and which can each be connected via bridge terminals (4,5). To make the data passage through a bridge terminal as efficient as possible, the traffic passed by this terminal is either prioritized by the relevant controllers, or a fixed capacity is reserved for the transmitted data in the relevant sub-networks.

Abstract: The invention relates to a network with several sub-networks which each comprise a controller for controlling a sub-network and which can each be connected via bridge terminals. A bridge terminal is set up, modified during operation, and released again by means of an exchange of messages of the relevant controller with the bridge terminal. The setup and modification procedures lay down the start moments and the durations of the presence of the bridge terminal in the sub-networks.

Abstract: The invention defines a combined and harmonized protocol for wireless LANs based on the combination of ETSI BRAN HiperLAN/2 protocols with IEEE 802.11a protocols. The new HipeLAN/2 enhanced AP (H/2eAP) will—in addition to its standard HiperLAN/2 operation—also work as Point Coordinator of 802.11a, or is supported by a cooperative Point Coordinator of 802.11. The H/2eAP sends a corporate beacon at the H/2 Target Beacon Transmission Time (H/2 TBTT) with setting the CfpDurRemaining parameter to (a multiple of) 2 ms. Upon receiving this beacon by stations of the 802.11a BSS, the stations recognize it as a foreign BSS beacon, extract and evaluate the CfpDurRemaining parameter and thus set timers to the appropriate duration, not to initiate any data transmission during the respective time. After sending this beacon the H/2eAP is able to initiate the transmission of its H/2 MAC frame without underlying interference from the neighbor 802.11a system and without delay of the initial H/2 corporate beacon.

Abstract: The invention relates to a network comprising a plurality of terminals. A transmitting terminal selects a modulation method in a first step at the beginning of a data transmission in which method a maximum permitted packet error rate for an estimated received-user-signal-to-noise-power ratio is remained under. In a second step the transmitting terminal determines the transmission power which is produced for a desired packet error rate for the modulation method selected in the first step.

Abstract: The invention relates to a network comprising a plurality of sub-networks, which sub-networks can each be connected via bridge terminals and comprise each a controller for controlling one sub-network. A controller is provided for setting up a connection between two sub-networks via a possible bridge terminal. The order of the connection set-up is determined first by the minimum number of possible bridge terminals between two sub-networks and then by the connection quality.

Abstract: The invention relates to an ad hoc network comprising a plurality of terminals for determining terminals as controllers for controlling at least two sub-networks. An identification is assigned to each terminal. A terminal transmits its identification to the other terminals which are located in a predefined area. The terminal having the largest identification is provided to be the controller of a first sub-network. A certain number of further terminals having the lowest identifications are assigned to the first sub-network. The non-integrated terminal having the highest-but-one identification is provided to be the controller of a second sub-network. A certain number of further non-integrated terminals having the lowest identifications are assigned to the second sub-network.

Abstract: The invention relates to a network having a plurality of subnetworks which can each be connected each via bridge terminals and each include a controller for controlling a subnetwork. A controller is provided for shifting the frame structure of its subnetwork relative to at least a frame structure of another subnetwork.