Abstract:
For routing a data packet in a wireless network in a reliable, yet simple way, thus improving network scalability and communication efficiency, a routing unit, a system and a method for routing a data packet in a wireless network are provided, wherein overlay routing is performed between junction groups comprising at least one node using a position- based routing protocol and underlay routing is performed between nodes of the network using link-based routing.
Abstract:
For improving data packet transmission from a collector node to one or more network nodes without additional routing protocols or increase of the overall network load, a system and a method are provided, wherein a node and/or the collector node receiving an uplink data packet addressed to the collector node is adapted to store at least a sender node information and a transmitting node information as a reverse-route information for a predetermined time.
Abstract:
For load balancing in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless mesh network, wherein a time slot is randomly selected within a determined answer interval for transmitting an answer responding to a received data packet.
Abstract:
The invention relates to networks having at least one slave terminal or device, and a master terminal or device connected thereto that controls the network and is arranged to instruct at least one slave terminal or device to exchange sub-network information with at least one other sub-network. On receipt of an inquiry, a slave terminal or device in another sub-networks transmits a response to the inquiring slave terminal or device in the first sub-network. The communicating slave terminals or devices pass on the sub-network information that is exchanged to the master terminal or device, for the responding sub-network to be merged into the inquiring sub network.
Abstract:
A device for controlling communication of at least one node in a wireless network is provided, the wireless network having a plurality of nodes, wherein the device is adapted to monitor communication statistics of at least one node associated to the device, wherein the device is adapted to initiate an adjustment of a communication mode of the at least one node based on the communication statistics and/or the device is adapted to output interference information of the at least one node based on the communication statistics.
Abstract:
For improving application data traffic in a communications network, data traffic of at least one application of the communications network is divided into two types in view of the current situation of the network – a first type comprising data, which can be transmitted by delaying the transmission, and a second type comprising data, which should not be delayed but should be transmitted at the current time. When an analysis of the current (average) load of the network shows that transmitting both types of data could lead to a heavy data traffic, a temporal transmission suppression session can be performed with regard to at least one entity of the communications network. In the temporal transmission suppression session, transmitting of data of the first type is interrupted during transmitting data of the second type. After completion of transmitting data of the second type, transmitting data of the first type is resumed.
Abstract:
For improving handling of alarm message storms in a communications network, alarm message storm avoidance, detection and/or recovery are implemented at nodes (23) and/or at data traffic controlling nodes (3, 20, 22) of the communications network. For alarm message storm avoidance, a random time spreading of alarm message transmissions is proposed, wherein the random time spreading of alarm message transmissions can be based on the current context and/or node state. For alarm message storm detection, it is proposed to monitor the alarm message inflow frequency to trigger a recovery process, wherein the monitoring can be performed with regard to different alarm types, parts of the network and/or time periods locally and/or centrally. The alarm message storm recovery or processing, respectively, is implemented by suppressing the amount of alarm messages to be transmitted. The alarm message storm recovery or processing can be implemented in a centralized and/or in a distributed way.
Abstract:
For reducing an end-to-end delay of data packet transmissions in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless network, wherein an answertime-out of a sender node is adjusted based on a distance between the sender node and a destination node.
Abstract:
In order to increase multi-hop transmission reliability in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless mesh network, wherein a retry of a data packet transmission is delayed, when it is determined that a transmission medium is busy after a predetermined maximum number of carrier sensing attempts and/or that the transmission remains unacknowledged after a predetermined maximum number of acknowledgement attempts.
Abstract:
A searching apparatus is put into the position of identifying the available apparatuses and services in its proximity in that an apparatus to be discovered periodically separates itself from its Access Point and builds up its own Ad hoc Network (AHN) which can be recognized via its Service Set Identifier (SSID) by the searching apparatus.