Abstract:
This invention relates to a method for configuring a limited node in a network, said limited node being able to receive data only within limited reception opportunities, the method comprising at a first node: (a) detecting that an update of a network configuration parameter value for the limited node is required; (b) deciding on whether to change a limited node behaviour from a first behaviour based at least partly on communication characteristics of the limited node, said change of behaviour including increasing reception opportunity at the limited node; (c) depending on decision at step (b), triggering delivery of a request of behaviour change to the limited node during a first reception opportunity; (d) triggering delivery of the updated network configuration parameter value to the limited node during a second reception opportunity of the limited node.
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 succ m (c), -the energy-restricted device transmitting a second beacon message on a second channel succ(c) and switching to receiving mode on channel listen ( succ m (c)), -upon receipt of the second beacon, the temporary master device transmitting a response on a channel listen listen ( succ m (c)), 20 -the energy-restricted device receiving the beacon response on a channel listen listen ( succ m (c)), determining that c = c_op. The invention also relates to an energy-restricted device and a proxy device therefor.
Abstract:
The invention describes a method of performing automatic commissioning of a network (N) comprising a plurality of network devices (10, 11, 12, 13), wherein each device (10, 11, 12, 13) is characterised by a device identifier (14)and wherein the devices (10, 11, 12, 13) are realised to exchange data packets (2), which method comprises the steps of obtaining a computer-readable installation plan (3) for the network (N), which installation plan (3) comprises a physical location descriptor (31)for devices(10, 11, 12, 13) of the network (N);deducing the network topology (T) of the network (N) from network descriptive information (40, 41, 42, 43) provided by the devices (10, 11, 12, 13)on the basis of data packets (2) exchanged between the devices (10, 11, 12, 13); and comparing the deduced network topology (T) to the installation plan (3) to allocate a physical location descriptor (31) to a device identifier (11).The invention further describes a commissioning system (1) for automatically commissioning a network (N) comprising a plurality of network devices (10, 11, 12, 13), wherein each device (10, 11, 12, 13) is characterised by a device identifier (14) and wherein each device (10, 11, 12, 13) is realised to transmit and receive data packets (2), which commissioning system (5) comprises a source (50) of a computer-readable installation plan (3) for the network (N), which installation plan (3) comprises a physical location descriptor (31) for each device (10, 11, 12, 13) of the network (N); a device control interface (55) realised to collect network descriptive information (40, 41, 42, 43) provided by the devices (10, 11, 12, 13); a topology discovery unit (53) realised to derive the network topology (T) of the network (N) from the provided network descriptive information (40, 41, 42, 43); and a commissioning unit (54) realised to compare the derived network topology (T) to the installation plan (3) to allocate a physical location descriptor (31) to a device identifier(14).
Abstract:
The present invention relates to a method for detecting overlapping sub-networks in a segmented network comprising a plurality of sub-networks interconnected by means of a backbone, each segmented network being coupled to the backbone by means of one control device, the method comprising the step of a first control device of a first sub-network monitoring the topology of the network by detecting overlapping sub-networks, wherein the detection of overlapping sub-networks comprises checking the routes of a single message.
Abstract:
The present invention relates to a method for controlling transmissions of a batteryless device (1) operating in a wireless network, the method comprising the following steps : -the batteryless device (1) transmitting a frame including elements for controlling operation of a remote device (2a), or controlled device, the batteryless device being configured with a predetermined number of planned retransmissions of the control frame, -the batteryless device sensing a change in the physical phenomenon induced by operation of the controlled device (2a), -the batteryless device determining, based on the sensing step, the success or failure of the frame transmission, -in case the transmission has succeeded, the batteryless device omitting further retransmissions of the control frame. The present invention also relates to a batteryless device carrying out such method.
Abstract:
The present invention relates to method for wireless communicating in a network comprising a resource-constrained end device, and a first router device, wherein the method comprises the following steps: - the end device (ZBLD)sending a trigger for proxy search procedure, - the first router (R1) device receiving the trigger for proxy search procedure, the first router (R1) determining whether it fulfills conditions for acting as a router for the end device, and in case conditions are fulfilled, the first router appointing itself as a proxy router for the end device, for relaying communication between the end device and the rest of the network. The invention also relates to an end device, a router device, and net work therefor.
Abstract:
The invention describes a method of commissioning a device arrangement comprising a number of devices (L 1 , L 2 , L 3 ,) communicating with each other over a wireless networked control system (WN). This method comprises the steps of - reading a unique identifier (ID 1 , ID 2 , ID 3 ) from an electronic identification tag (T) which is tagged to a device (L 1 , L 2 , L 3 ) currently to be installed by means of a reading device (3) carried by an installer who is to install the device (L 1 , L 2 , L 3 ), and - compiling an inventory (IV) of the installed devices (L 1 , L 2 , L 3 ) using the read unique identifiers (ID 1 , ID 2 , ID 3 ), - commissioning of the devices (L 1 , L 2 , L 3 ) using the inventory (IV). The invention further describes a commissioning system (100) for commissioning such a device arrangement, a data logger and an installation tool (1) for installing devices (L 1 , L 2 , L 3 ,) usable in such a commissioning system (100).
Abstract:
The invention relates to a networked control system including comprising a resource limited device (102) and an assigned proxy device (104). The resource limited device (102) comprises a device logic (122) for providing a change notification message to the assigned proxy device (104) on a change of a device state of the resource limited device, wherein each device state of the resource limited device (102) is defined by a corresponding state variable and wherein the change notification message comprises a state variable corresponding to an actual device state of there source limited device (102). The assigned proxy device (104) comprises means (142) for receiving a change notification message from an assigned resource limited device (102), wherein the change notification message comprises a state variable which defines an actual device state of the resource limited device and means (144) for distributing a state variable change notification, comprising the state variable which defines the actual device state of the resource limited device, within the networked control system according to requirements of a control application (162) of the networked control system.
Abstract:
The invention relates to a method for replacing a device in a network comprising a plurality of devices. The method includes a step of storing (132) replicated data of a first device in a storage means, a step of removing (352) the first device from the network, a step of connecting (354) a second device to the network, a step of providing (262) a replacement information comprising the first identifier and a step of providing (272) the replicated data of the first device from the storage means to the second device.
Abstract:
The invention relates to a method for assigning addresses to nodes of a communication network tree structure, wherein each node corresponds to a network device of the communication network, comprising a step of determining first tree parameters (C m , R m , L m ), a step of assigning node addresses to nodes in a first section of the tree, i.e. (41, 42, 43, 44a, 44b) directly descending a first node (40), based on a predetermined assignment algorithm and the first tree parameters, a step of determining a first number of available descendent nodes for a particular node (44a, 44b), based on the predetermined assignment algorithm and the first tree parameters, a step of determining second tree parameters (C1112, R m2 , L m2 ) for the particular node, such that a second number of available descendent nodes for the particular node, being determined based on the predetermined assignment algorithm and the second tree parameters, is equal or smaller than the first number of available descendent nodes, and a step of assigning node addresses to nodes in a second section of a tree (45 a, 45b, 46a, 46b) directly descending the particular node, based on the predetermined assignment algorithm and the second tree parameters.