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 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 answers to more than one received data packet are aggregated in one answer-batch.
Abstract:
The invention relates to a method of monitoring a plurality of vital parameters of a patient 10 using a body sensor network with a set of on-body sensors 1 and at least one off-body monitoring device 2, the method comprising the following steps: with each on-body sensor 1, sensing a vital parameter and transmitting data related to the sensed vital parameter to the off-body monitoring device 2, and for at least one of the on-body sensors 1, determining the inclination of this on-body sensor 1 relative to the off-body monitoring device 2. In this way, a reliable and easy to use possibility for monitoring vital parameters of a patient 10 using a body sensor network is provided that minimizes the performance problem produced by RF attenuation caused by the body of the patient 10.
Abstract:
There is provided a method and a device for detecting interfering radio technologies. The method in accordance with the invention is applicable in order to detect and identify possible interfering technologies that can be found, e.g., in the 2.4 GHz ISM band, by use of a device having a single transceiver which is adapted to employ a first wireless radio access technology. For example, a device having an IEEE 102.15.4 cordless transceiver is able to identify according to the method in accordance with the invention radio signals sent by disquieters which use other interfering technologies by use of only this transceiver. The device can for example be a sensor of a wireless body sensor network.
Abstract:
There is provided a method and a device for detecting interfering radio technologies. The method in accordance with the invention is applicable in order to detect and identify possible interfering technologies that can be found, e.g., in the 2.4 GHz ISM band, by use of a device having a single transceiver which is adapted to employ a first wireless radio access technology. For example, a device having an IEEE 102.15.4 cordless transceiver is able to identify according to the method in accordance with the invention radio signals sent by disquieters which use other interfering technologies by use of only this transceiver. The device can for example be a sensor of a wireless body sensor network.
Abstract:
A searching apparatus in a wireless network with at least three base stations is put in the position of identifying the available apparatuses and services which are in its proximity, in that the apparatuses Gi (i <> k) determine the signal strengths ss(i, j) at which they receive signals from the base stations Bi, and the apparatuses to be discovered send these signals to a searching apparatus Gk.
Abstract:
The invention relates to a network having at least one slave terminal and a master terminal that is connected thereto and that is provided for charging at least one slave terminal with requests to search for at least one other terminal to be incorporated in the network. After receiving a request, a non-incorporated terminal transmits a response to the requesting slave terminal and the requesting slave terminal forwards the response to the master terminal.
Abstract:
A searching apparatus in a wireless network with at least three base stations is put in the position of identifying the available apparatuses and services which are in its proximity, in that the apparatuses G i (i ≠ k) determine the signal strengths ss(i, j) at which they receive signals from the base stations B i , and the apparatuses to be discovered send these signals to a searching apparatus G k .
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.
Abstract:
For secure data transmission to a node of a network providing minimized communication overhead and improved protection of the network against counterfeiting, a system, a control unit and a method are provided, wherein a segment controller provides information from a service center to at least one node, with the node and the segment controller being capable of mutual authentication and the node (10) being further adapted to verify an authorization of the segment controller (60) and to accept the information in case of successful verification.