Abstract: A computing system (200) and a method of generating data for enabling external control of a lighting system (100) comprising a plurality of light sources (101, 102) based on third party content are provided. The computing system is configured to receive a plurality of registrations of lighting systems and, for each of the registered lighting systems, information including indications of positions of at least some of the light sources of the lighting system, and to map the information onto a coordinate system. A coordinate-based representation is generated based on the mapping. Further, the computing system is configured to receive third party content from an external third party content provider (300), select at least one of the registered lighting systems, and generate data for controlling the selected lighting system. The generation of data is based on the coordinate-based representation related to the selected lighting system and the third party content.

Abstract: The invention relates to methods and devices for exchanging control information in mixed radio systems. Security is added in cases where a user of a first wireless device (102) wants to command a second wireless device (101) to perform a certain action. The first and second wireless devices use different radio systems or standards (e.g. WiFi and ZigBee/802.15.4) but their radios do operate on the same frequency band (e.g. 2.4 GHz). To add security, the second wireless device (101) will only accept certain commands if it can detect that the first wireless device (102) is physically close-by. To prove that the first device (102) is close-by, it emits a predetermined energy pattern, e.g., one or more packets (the contents do not matter, while their lengths/time spacing may) using its radio system. At the same time, the second wireless device (101) measures the energy in one or more of its overlapping radio channels to detect that the first wireless device (102) is close by and execute the commanded action.

Abstract: The invention relates a method and apparatus for distributing power in DC- grid systems, wherein power negotiations are done in a daisy chained system. Multiple mechanisms are presented mitigating the issue of stepwise exploring the power requests along a chain and still keeping the negotiation quick and without many cycles required.

Abstract: An average power consumption of receiving units (3,5,7) for controlling apparatuses (4,6,8) in response to operation control signals from transmitting units (2) may be reduced by introducing devices (1,21) for controlling the power consumption of the receiving units (3,5,7) in response to detections of states of the apparatuses (4,6,8). The devices (1) may comprise controllers (30) for controlling the power consumption in a wireless, non-wireless, physical and/or logical manner. The devices (1) may comprise monitors (33) for monitoring power consumption, currents and/or voltages at the receiving units (3,5,7) and/or the apparatuses (4,6,8).

Abstract: The present invention relates to a method for determining an operational channel c_op of a communication network comprising at least two potential proxies for an energy-restricted device to join the network, and a set C of radio channels, wherein an energy-restricted device is to join the network, the method comprising the following steps: —the energy-restricted device transmitting a first beacon message on a first channel succ(m?1)(c) in MAC broadcast, wherein c belongs to the set C, and switching to receiving mode on channel listen(c), wherein succ and listen is an arithmetical function, from C to C, and m is a positive integer, —the proxies receiving the beacon message sent on channel succ(m?1)(c), —the temporary master device switching its radio receiver to channel succm(c), —the energy-restricted device transmitting a second beacon message on a second channel succ(c) and switching to receiving mode on channel listen (succm(c)), —upon receipt of the second beacon, the temporary master device transmitting

Abstract: The invention relates a wireless node and to a method for operating the wireless node, wherein the wireless node comprises a controller arranged for communicating wirelessly with at least one further wireless node so as to determine an ability of the wireless node and to create a network, wherein a characteristic of the network depends on the ability of the wireless node.

Abstract: A network system (100) for and a method of caching information from a resource-constrained device are provided. A resource-constrained device (110) provides via a network (130) generated data (d) that relates to a status of the resource-constrained device (110) to a controllable device (150) for controlling the controllable device (150). The controllable device (150) controls an operation of an operational component (154) in response to receiving the data (d). The controllable device (150) also comprises a cache memory (156) in which the received data (d) is stored and the controllable device (150) is configured to receive from a requesting device (170) a request (r) for the stored data (d) and is configured to provide the stored data (d) to the requesting device (170). The network system (100) provides a caching solution for the data (d) which is more transparent for the resource-constrained device (110).

Abstract: The present invention relates to a very simple and robust wireless batteryless device (100) for harvesting energy. The actuation upon button pressure/release results in a rotation of a first member (1) around its central axis (11) leading to a move of an element (3), which is loosely fixed at the first member (1) from a pivot point (14), and a rotation around the central axis (11) of the second member (2) to which a generator axis of an energy harvester is coupled, the rotation axis of the generator being coincident with the central axis (11). Upon full pressure/release, the element (3) is forced to rotate around the pivot point (14), allowing a vertically raised pin (22) of the second member (2) to disengage a recessed area (31, 32) at each end of a slot (30) of the element (3) and the second member (2) to rotate to its rest position.

Abstract: The invention relates to a DC power distribution system, especially an EMerge DC power distribution system (1). The system is adapted such that power conductors (3, 4) electrically connected to different groups (5, 6) of ports (14) belong to separate power line communication (PLC) channels, wherein several electrical loads (7 . . . 10; 11 . . . 13) are in power line communication with a group of ports of a same PLC channel. The separation of the different PLC channels allows for a relatively simple determination to which group of ports which electrical loads are electrically connected. This information can be used by, for instance, a user to commission the electrical loads. For example, if the locations of the power conductors, which are electrically connected to certain groups of ports, are known, the information about which electrical loads are connected to which groups of ports can be used for determining the location of the respective electrical load.

Abstract: The invention describes a network interface unit (10) for a node (D, D 1, D 2, D 3, D a, D b, D c) in a wireless multi-hop network (WN) comprising a plurality of nodes (D, D 1, D 2, D 3, D a, D b, D c) that can be connected by means of network paths between source nodes and destination nodes, which network interface unit (10) comprises a multiple route request assembly module (11) for assembling a multiple route request message (MREQ) such that the multiple route request message (MREQ) of a source node (D) includes a plurality of addresses (41, 43, 45) for specific multiple destination nodes (D 1, D 2, D 3) to which network paths are to be established. The network interface (10) further comprises a transmit unit (12) for transmitting the message (MREQ) to other nodes (D 1, D 2, D 3, D a, D b, D c) in the wireless multi-hop network (WN).

Abstract: The invention provides methods, devices (102, 110, 124, 136) and communication systems (100) for establishing end-to-end secure connections and for securely communicating data packets. Such a communication system (100) comprises a first device (124, 136), an intermediate device (110) and a second device (102). The first device (124, 136) communications via a first network (120), which is based on a first transport protocol and a first transport security protocol with the intermediate device (110). The second device (102) communications via a second network, which is based on a second transport protocol and a second transport security protocol with the intermediate device (110). The intermediate device (110) modifies packets received via first network to packets suitable for communication via the second network, and vice versa. The first device (124, 136) is able to reconstruct a header of a received packet as if the packet was sent via the second network (108) and its transport and security protocols.

Abstract: The present invention relates to an apparatus and method for interpreting control commands received from a control element, wherein the control element sends control commands indicating start of activation (e.g., press operation) and end of activation (e.g., release operation) separately. Two time thresholds provided by respective timers (T1, T2) are used at the controlled device (20), a lower time threshold for determining the short activation and a higher time threshold for determining the long activation; the difference between the two time thresholds indicates a “dead zone” of no control action.

Abstract: The invention relates to a DC power distribution system for distributing DC power from a power supply device (3) to an electrical device (2). The power supply device is operable in a high power mode or in a low power mode for supplying a higher power or a lower power, respectively, to the electrical device via an electrical conductor (4), wherein the electrical device is switchable between a high power mode and a low power mode in which the electrical device consumes more power or less power, respectively. An electrical device control unit (11) controls the mode of the electrical device depending on the power supplied by the power supply device. This automatic control of the electrical device depending on the provided power can lead to a better balance between the power consumption and the power supply and, thus, to an improved efficiency of supplying power to the electrical device.

Abstract: The invention relates to a DC power distribution system for distributing DC power to one or several electrical devices. The system comprises an electrical device (2) for receiving DC power via an electrical conductor (4) from a power supply device (3) with a power supply control unit (5) and for transmitting a signal to the power supply control unit for requesting a lower power or a higher power. The power supply device is operable in a high power mode and in a low power mode, wherein the power supply control unit controls the power mode of the power supply device depending on the received signal. This allows adapting the power supply to the power, which is actually really needed in the DC power distribution system, in a technically relatively simple way. Particularly standby situations can be handled more efficiently.

Abstract: The invention relates to an electrical connector (1) for connecting an electrical device to an electrical conductor (3) for powering the electrical device with DC voltage. The electrical connector comprises a diagnostic information providing unit for providing diagnostic information about a connection between the electrical device and the electrical conductor and an indicator for indicating the determined diagnostic information. An installer can therefore readily see whether the electrical connection is correct or not. Accordingly, the installer can modify the electrical connections such that the indicated determined diagnostic information indicates a correct electrical connection. This reduces the likelihood of a shutdown of the powering of the electrical device with DC voltage, after the installation has been completed.

Abstract: A method for securing communications between a first node (N1) and a second node (N2) in a network (1) further comprising a management device (2) provided with root keying materials, the method comprising the following steps: the management device generating, based on root keying materials, a first node keying material shares comprising a number of sub-elements and the first node keying material shares being arranged for generating a first complete key, the management device selecting a subset of sub-elements of the first keying material shares, the number of sub-elements selected being less or equal than the total number of sub-elements of the first keying material shares, and the selected sub-elements forming a first node partial keying material shares or symmetric-key generation engine, the first node generating, based on the first node symmetric-key generation engine and on an identifier of the second node, a first key, used for securing communications with the second node.

Abstract: A method for wireless communication in a network comprising a resource-restricted device (ZGPD), at least two proxy devices (ZP1, ZP2) and at least one destination device (DD), wherein the method comprises the following steps: the resource-restriced device transmitting a frame to be forwarded to a destination device in the network, said frame containing a unique source identifier of the resource-restricted device, at least one proxy device receiving the frame and identifying the frame as originating from a resource-restricted device, —the proxy device determining the unique source identifier and deriving a group identifier as a known function of the unique source identifier, the group identifier designating a group of devices in the network or a source address, the proxy constructing, from the frame, an appropriate packet to be forwarded, the proxy forwarding the packet by taking into account the group identifier.

Abstract: Energyharvesting device The present invention relates to a very simple and robust wireless batteryless device (100) for harvesting energy. The actuation upon button pressure/release results in a rotation of a first member (1) around its central axis (11) leading to a move of an element (3), which is loosely fixed at the first member (1) from a pivot point (14), and a rotation around the central axis (11) of the second member (2) to which a generator axis of an energy harvester is coupled, the rotation axis of the generator being coincident with the central axis (11). Upon full pressure/release, the element (3) is forced to rotate around the pivot point (14), allowing a vertically raised pin (22) of the second member (2) to disengage a recessed area (31, 32) at each end of a slot (30) of the element (3) and the second member (2) to rotate to its rest position.

Abstract: The invention relates to a proxy node comprising means for managing a proxy table, a receiver for receiving a message from a first resource restricted device, said message being intended to at least one corresponding destination device, control means for checking whether an entry for the first resource restricted device is included in the set of entries of the proxy table, the set of entries of the proxy table indicating the set of resource-restricted devices the proxy node is in charge of, a transmitter for forwarding the message depending on the result of the proxy table checking, the means for managing the proxy table being arranged for cleaning the proxy table of the entry relative to the resource-restricted device by monitoring the relative usage of the proxy node for forwarding messages for the resource restricted device with the usage of competitor proxy nodes for forwarding messages for the resource restricted device.

Abstract: Methods are provided for transmitting and receiving a message to or form a wireless limited node (10) in a wireless network (100) wherein the wireless limited node (10) is related to a coupled device (30) in the wireless network (100) and is able to receive data only within limited reception opportunities following transmission by the wireless limited node (10). The method of transmitting comprises noticing a need for transmitting the message to the wireless limited node (10), preparing the message to be transmitted, the coupled device (30) changing a physical parameter for triggering external activation of the wireless limited node (10), and after receiving a signal transmitted by the wireless limited node (10) upon said external activation, sending the message to be transmitted to the wireless limited node (10) within the limited reception opportunities. The method of receiving does not comprise the steps of preparing the message and transmitting it to the wireless limited node (10).