Abstract: The present disclosure relates to an access point (2) and to a sensor station (4) and methods performed therein. The access point (2) is adapted to communicate with the sensor station (4) and vice versa, over a communication channel using a contention based channel access. The access point (2) monitors (110) the traffic of the communication channel and estimates a congestion level of the communication channel. Information indicating the congestion level is incorporated (125) into a synchronization frame (200; 300) which is transmitted (140) to the sensor station (4). The sensor station (4) uses the congestion information when it selects which modulation and coding scheme it should use when sending data to the access point.

Abstract: Method of establishing a route between a Route Originator, RO, mesh node and a Route Destination, RD, mesh node in a mesh network, said mesh network comprising a plurality of mesh nodes, said method comprising the steps of assembling a Route Request, RREQ, message, broadcasting said assembled RREQ message in said mesh network, receiving, by said RD mesh node, via any of said plurality of mesh nodes, said RREQ message, and transmitting, by said RD mesh node, a Route Reply, RREP, message towards said RO mesh node, and receiving, by said RO mesh node, via any of said plurality of mesh nodes, said RREP message thereby establishing said route between said RO mesh node and said RD mesh node, wherein an Route Sequence Number is used, which is a number specific for a pair of RO mesh node and RD mesh node.

Abstract: The present disclosure relates to a technique of supporting access to a wireless medium of a wireless communication network. A method embodiment comprises: when access of a station (100) to the wireless medium is delayed, determining (S202; S308), by the station, a back-off period indicating the period of time the access of the station to the wireless medium is delayed, and entering (S204; S312), by the station (100), into a sleep mode for a sleep period based on the determined back-off period.

Abstract: A relay node is configured to discover a route between a route origination node and a route destination node in a mesh communication network. The relay node in this regard generates a route request message that requests a route from the route origination node through the mesh communication network to the route destination node. The relay node transmits the route request message via unicast or broadcast, depending respectively on whether a routing table at the relay node has or does not have an entry indicating a known route to the route destination node.

Abstract: A method of forwarding a received message in a mesh network comprising a plurality of communicatively interconnected mesh nodes, said method comprising the steps of receiving, by a mesh node of said plurality of interconnected mesh nodes, a message to be forwarded in said mesh network, determining, by said mesh node, that said message to be forwarded is to be unicasted to a particular neighbour mesh node of said mesh node, said particular neighbour mesh node being one hop away from said mesh node, and unicasting, by said mesh node, said message to be forwarded to said particular neighbour mesh node a plurality of times, wherein each time delay between subsequent unicasted messages is predetermined. A corresponding mesh node is also described herein.

Abstract: There is provided a method and corresponding arrangements and network nodes/devices for enabling packet forwarding in a wireless mesh network comprising a plurality of nodes. Basically, the method comprises conforming, for transmission of the same network layer information from at least two different nodes, the corresponding over-the-air packets to be node-independent, and scheduling the conformed over-the-air packets for synchronized and simultaneous transmission from the at least two different nodes.

Abstract: In one aspect, a node in a mesh network receives presence messages from neighbor node in the mesh network, and determines a number of neighbor nodes, based on the received presence messages. The node determines a duty cycle percentage to be requested of the neighbor nodes, based on the number of the neighbor nodes, the duty cycle percentage indicating a minimum percentage of time the neighbor nodes should be awake to receive messages, so as to ensure a predetermined probability of successful reception of messages transmitted by the node. The node broadcasts the duty cycle percentage for reception by the neighbor nodes. The node also receives requested duty cycle percentages from corresponding neighbor nodes, sets an operating duty cycle of the node based on a greatest duty cycle percentage of the received duty cycle percentages, and sleeps and wakes according to the set duty cycle of the node.

Abstract: The present disclosure relates to a technique of supporting access to a wireless medium of a wireless communication network. A method embodiment comprises: when access of a station (100) to the wireless medium is delayed, determining (S202; S308), by the station, a back-off period indicating the period of time the access of the station to the wireless Determine back-off medium is delayed, and entering (S204; S312), by the station (100), into a sleep mode for a sleep period based on the determined back-off period.

Abstract: A responding device (14) is configured to transmit messages at transmission opportunity times that occur substantially periodically according to a transmission interval. Configured in this way, the responding device (14) receives a request message (16) from a requesting device (12) in a wireless communication system (10). Responsive to the request message (16), the responding device (14) determines to transmit a response message (18) at a response time that is distinct from any of the transmission opportunity times and that occurs after at least the transmission interval has passed since receiving the request message (16). The responding device (14) in this regard delays transmission of the response message (18) until the response time, by refraining from transmitting the response message (18) at one or more transmission opportunity times that occur after receiving the request message (16) but before the response time. The responding device (14) then transmits the response message (18) at the response time.

Abstract: A first Bluetooth device and a method performed thereby for operating in a network of Bluetooth devices, the first Bluetooth device being capable of operating according to at least two different configurations, wherein a first configuration is of lower functionality than a second configuration.

Abstract: The present disclosure relates to an access point (2) and to a sensor station (4) and methods performed therein. The access point (2) is adapted to communicate with the sensor station (4) and vice versa, over a communication channel using a contention based channel access. The access point (2) monitors (110) the traffic of the communication channel and estimates a congestion level of the communication channel. Information indicating the congestion level is incorporated (125) into a synchronization frame (200; 300) which is transmitted (140) to the sensor station (4). The sensor station (4) uses the congestion information when it selects which modulation and coding scheme it should use when sending data to the access point.

Abstract: A method in a relay device for forwarding messages in a mesh based network comprises receiving a message to be forwarded (step 201), and determining whether the message is to be forwarded using a routing profile associated with the message (step 203). If so, the message is routed according to a routing profile (step 205). If not, the message is outed using a flood procedure (step 207).

Abstract: A responding device (14) is configured to transmit messages at transmission opportunity times that occur substantially periodically according to a transmission interval. Configured in this way, the responding device (14) receives a request message (16) from a requesting device (12) in a wireless communication system (10). Responsive to the request message (16), the responding device (14) determines to transmit a response message (18) at a response time that is distinct from any of the transmission opportunity times and that occurs after at least the transmission interval has passed since receiving the request message (16). The responding device (14) in this regard delays transmission of the response message (18) until the response time, by refraining from transmitting the response message (18) at one or more transmission opportunity times that occur after receiving the request message (16) but before the response time. The responding device (14) then transmits the response message (18) at the response time.

Abstract: In one aspect, a node in a mesh network receives presence messages from neighbor node in the mesh network, and determines a number of neighbor nodes, based on the received presence messages. The node determines a duty cycle percentage to be requested of the neighbor nodes, based on the number of the neighbor nodes, the duty cycle percentage indicating a minimum percentage of time the neighbor nodes should be awake to receive messages, so as to ensure a predetermined probability of successful reception of messages transmitted by the node. The node broadcasts the duty cycle percentage for reception by the neighbor nodes. The node also receives requested duty cycle percentages from corresponding neighbor nodes, sets an operating duty cycle of the node based on a greatest duty cycle percentage of the received duty cycle percentages, and sleeps and wakes according to the set duty cycle of the node.

Abstract: A master device 103 and a method for transmitting a message towards a destination node. The master and the destination are operating in a network 100. The master has a Slave Neighbour Table (SNT) and a Master Neighbour Table (MNT). When the identity of the destination is comprised in the SNT, the master unicasts the message to the slave having the same identity as the destination, otherwise the master determines if the identity of the destination is in the MNT. If so, the master unicasts the message to the neighbour master having the same identity as the destination or to the neighbour master being the master of the neighbour slave having the same identity as the destination; otherwise the master multicasts the message to all neighbour masters comprised in the MNT. When the identity is neither comprised in the SNT nor in the MNT, the master broadcasts the message.