Abstract: The invention relates to a communication apparatus comprising a processor part, and a data transfer part. The apparatus is configured to receive, by the data transfer part, a packet comprising a network identification code (NIC) of a communication apparatus that transmitted the packet. A header field of the packet comprises a first part of the NIC and a second part of the NIC is included in another field of the packet. The apparatus is further configured to define, by the processor part, that the received packet is from a network to which the communication apparatus belongs, if the first part of the NIC of the received packet corresponds to the first part of the NIC of said communication apparatus. The invention relates also to method for a communication apparatus, a communication system, a computer program, and a computer readable medium.

Abstract: The application relates to an addressing system for a wireless communication network. The system comprises a first communication device and a second communication device. The first and second communication devices belong to a group of plurality of communication devices of the network. Each communication device is configured to provide a bi-directional radio communication with at least one of the plurality of communication devices. Each communication device has a long node identifier (L-ID) for addressing said communication device and for being used in at least one security procedure of communication in the network. Each communication device is configured to generate a short node identifier (S-ID) for identifying said communication device in a dedicated communication between it and other communication device belonging to the plurality of communication devices.

Abstract: The invention relates to a wireless communication system comprising a plurality of radio devices. Each radio device belongs to one or more radio neighborhoods and is capable of repeating the transmission of the broadcast message regardless of whether the radio device is operating as a router device or as a non-router device. The radio devices belonging to each radio neighborhood are configured to repeat collectively a transmission of a broadcast message a collective target amount of repetitions within each radio neighborhood. Each radio device within each radio neighborhood to which it belongs is arranged to: define a total repetition load value representing a contribution of said radio device to the collective target amount of repetitions of the broadcast message within said radio neighborhood, and decide whether to repeat the transmission of the broadcast message in accordance with the defined total repetition load value.

Abstract: Disclosed is a wireless mesh network that includes a first node node and at least one second node. The first node is configured to provide a bi-directional mesh communication to the at least one second node. The first node is configured to broadcast a beacon periodically. The at least one second node is configured to sent a data frame to the first node. The data frame is encrypted by way of an Initialization Vector, which has been composed from at least a first node-specific Super Frame Counter included into the beacon, a Sender-Node-Specific-Frame Counter, and an identification of a sender.

Abstract: Disclosed is a wireless communication system, including one or more monitoring devices and one or more asset tag devices. The one or more monitoring devices are configured to: transmit a beacon frame on at least one first communication channel and listen to the second communication channel. The one or more asset tag devices are configured to: scan at least one first communication channel to receive at least one beacon frame; select a monitoring device; switch to the second communication channel indicated in the beacon frame; and initiate communication with the selected monitoring device on the second communication channel. The selected monitoring device is further configured to communicate with the one or more asset tag devices on the second communication channel. Also disclosed are discovery methods, an asset tag device and a monitoring device for the wireless communication system.

Abstract: The invention relates to a communication apparatus comprising a processor part, and a data transfer part. The apparatus is configured to receive, by the data transfer part, a packet comprising a network identification code (NIC) of a communication apparatus that transmitted the packet. A header field of the packet comprises a first part of the NIC and a second part of the NIC is included in another field of the packet. The apparatus is further configured to define, by the processor part, that the received packet is from a network to which the communication apparatus belongs, if the first part of the NIC of the received packet corresponds to the first part of the NIC of said communication apparatus. The invention relates also to method for a communication apparatus, a communication system, a computer program, and a computer readable medium.

Abstract: Disclosed is a wireless communication network including radio nodes, which include a first radio node and a second radio node. The nodes are configured to provide a bi-directional radio communication between each other. The nodes are configured to receive a software-distribution package. In addition, the first node sends to at least the second node a timer frame indicating when all nodes of the network start to execute the received package in order to update a software of the nodes.

Abstract: The invention relates to a wireless communication system comprising a plurality of radio devices. Each radio device belongs to one or more radio neighborhoods and is capable of repeating the transmission of the broadcast message regardless of whether the radio device is operating as a router device or as a non-router device. The radio devices belonging to each radio neighborhood are configured to repeat collectively a transmission of a broadcast message a collective target amount of repetitions within each radio neighborhood. Each radio device within each radio neighborhood to which it belongs is arranged to: define a total repetition load value representing a contribution of said radio device to the collective target amount of repetitions of the broadcast message within said radio neighborhood, and decide whether to repeat the transmission of the broadcast message in accordance with the defined total repetition load value.

Abstract: Disclosed is a system for connecting a beacon device and a gateway device. The system includes beacon devices and the gateway device. The beacon device belonging to the beacon devices is adapted to provide a bi-directional connection to the GW device and the GW device is adapted to provide a bi-directional connection to an application system. The beacon devices form a multi-hop wireless mesh network, the GW device provides a bi-directional mesh connection to the wireless mesh network, and the wireless mesh network is used for communicating data between the beacon device and the GW device.

Abstract: Disclosed is a wireless mesh network that includes a first node node and at least one second node. The first node is configured to provide a bi-directional mesh communication to the at least one second node. The first node is configured to broadcast a beacon periodically. The at least one second node is configured to sent a data frame to the first node. The data frame is encrypted by way of an Initialization Vector, which has been composed from at least a first node-specific Super Frame Counter included into the beacon, a Sender-Node-Specific-Frame Counter, and an identification of a sender.

Abstract: Disclosed is a system for co-operative repetition of broadcast messages comprising a plurality of router nodes, each being able to receive and repeat transmission of broadcast messages. The plurality of router nodes is configured to repeat collectively a transmission of a broadcast message on one or more frequency channels a collective target amount of times inside a neighborhood of the plurality of router nodes. The amount of repetitions of individual router nodes differs from 0 to n, wherein n>0, in order to achieve the collective target amount of repetitions.

Abstract: The invention relates to a wireless communication system (100), comprising a plurality of radio nodes, each being able to operate at least as a router node (104) or as a non-router node (104). Each of the plurality of radio nodes is configured to: detect density of the router nodes (104) within its neighbourhood, and make a decision based on the detected density whether to operate as a router node (104) or as a non-router node (106). The invention relates also to a role selection method and a radio node device (104, 106, 500) for the wireless communication system (100).

Abstract: Disclosed is a system for connecting a beacon device and a gateway device. The system includes beacon devices and the gateway device. The beacon device belonging to the beacon devices is adapted to provide a bi-directional connection to the GW device and the GW device is adapted to provide a bi-directional connection to an application system. The beacon devices form a multi-hop wireless mesh network, the GW device provides a bi-directional mesh connection to the wireless mesh network, and the wireless mesh network is used for communicating data between the beacon device and the GW device.

Abstract: A node device (601) of a wireless sensor network comprises a receiver (651) for receiving transmissions from other nodes. A controller (641) selectively switches on said receiver (651) according to a timetable. The node device (601) maintains synchronization with and receives beacon transmissions from another node in said wireless sensor network. If a failure is observed in previously maintained synchronization, the controller (641) reads from memory previously received information about neighboring nodes with which said node device (601) did not yet maintain synchronization. The controller (641) utilizes such stored information to selectively switch on the receiver (651) to attempt receiving a beacon transmission from such a neighboring node.

Abstract: A wireless sensor network, a node device thereof and a method for arranging communications therein are presented. A first frequency is used in wireless communication of information between a headnode and subnodes of a first cluster (103) using a time slotted channel access scheme. A headnode of a second cluster (113) known the first frequency and selects a second, different frequency for use in wireless communication of information within said second cluster (113) using a time slotted channel access scheme. The headnode of the first cluster (103) is informed about the second frequency selected for the second cluster (113). Information from the headnode of said first cluster (103) to the headnode of said second cluster (113) is communicated on said second frequency, using the same time slotted channel access scheme as other nodes in said second cluster (113).