Telefonaktiebolaget Lm Ericsson (publ)

Piergiuseppe Di Marco

Per Skillermark

Pontus Arvidson

Thomas Rimhagen

Jingcheng Zhang

Leif Wilhelmsson

Henrik Sjöland

Jonas Kronander

Anna Larmo

Per Elmdahl

Wei Shen

Roman Chirikov

A method of establishing connection between a first node in a wireless network and a second node in said wireless network, wherein each of said first and second nodes comprise a primary radio receiver and a wake up receiver, each of said nodes comprising a Radio Frequency, RF, switch, arranged to connect one of said primary or secondary radios to a radio antenna, said method comprising the steps of transmitting, by said first node, to a wake-up receiver of a second radio node, a wake-up signal that indicates a frequency channel on which the second radio node is to transmit a response, receiving, by said first node, in response to transmitting said wake-up signal, response from said second radio node on the frequency channel indicated, and establishing, by said first node, a connection between said first and second nodes in order to transfer data between said first and second nodes. The present disclosure also relates to corresponding mesh nodes and a computer program product.

Use of wake-up receiver with Bluetooth low energy

A method for multilane path discovery between a first node and a second node in a wireless mesh network, the method being performed by an intermediate node and comprising: receiving, by the intermediate node, a path request for establishing a path between the first and second nodes, wherein the path request comprises node count information related to the path between the first and second nodes; determining, by the intermediate node, that the received node count information is less than or equal to node count information, corresponding to a path between the first and second nodes, that is stored in a discovery table of the intermediate node; and updating, by the intermediate node, the stored node count information with the received node count information.

Methods for multi-lane discovery with partially disjoint paths

A method and device for path discovery in a Bluetooth® mesh network.

Path discovery procedure for a bluetooth mesh network

A method performed by a low-power node (LPN) in a wireless mesh network, wherein the LPN comprises a main receiver and a wakeup receiver, and wherein the method comprises: performing the following first operations in response to an event trigger: activating the wakeup receiver while maintaining the main receiver in an inactive state, and sending a polling message to a second node in the wireless mesh network; for a predetermined duration, determining whether a wakeup signal has been received from the second node via the wakeup receiver; and performing a plurality of second operations based on determining that the wakeup signal has been received, the second operations including: activating the main receiver, and receiving, from the second node via the main receiver, a response to the polling message.

Wakeup radio for low power nodes in Bluetooth

A method of waking up a mesh node in a wireless mesh network, wherein said mesh node comprises a main receiver and a wakeup receiver, and wherein said method comprises the steps of receiving, by said wakeup receiver of said mesh node, a wake up signal message, wherein said wake up signal message comprises context information which is related to a path between a source mesh node and a destination mesh node corresponding to said wake up signal message, determining, by said wakeup receiver of said mesh node, that said context information is applicable for said mesh node, activating, by said wakeup receiver of said mesh node, said main receiver of said mesh node for subsequently receiving a data message.

Method of waking up a mesh node in a wireless mesh network as well as a related mesh node and a computer program product

A method and apparatus for device establishing redundant relay nodes in a mesh network.

Method for adding redundant relay nodes during path discovery procedure of a mesh network

A method for establishing redundant paths between a source node and the destination node, source node and a destination node in a wireless mesh network, said method comprising the steps of establishing, by said source node, a first path between said source node and said destination node, wherein said first path is associated with a first sequence number and comprises one or more first intermediate nodes in said wireless mesh network; determining, by said source node, to establish a second path between said source node and said destination node; transmitting, by said source node, a path request to a plurality of nodes in said wireless mesh network, wherein said path request identifies said destination node and that said requested second path is redundant to said first path; and said path request is transmitted no earlier than a predetermined duration after said first path is established; receiving, by said source node, from said destination node, a path reply that identifies said second path, wherein said second path comprises one or more second intermediate nodes, and wherein said one or more second intermediate are exclusive of said one or more first intermediate nodes. Complimentary methods and devices for establishing redundant paths in a wireless mesh network are also presented herein.

Independent redundant path discovery for Bluetooth mesh

Embodiments herein relate to e.g. a method performed by a network node () for handling communication of data in a Bluetooth Low Energy (BLE) mesh network (). The network node obtains a neighbor table, wherein the neighbor table is based on messages received from different network nodes; and selects an association between network nodes in the BLE mesh network () taking the neighbor table into account.

Handling communication of data in a bluetooth low energy (BLE), mesh network

A method by an end node () operating in a Mesh communications network () is described herein. The end node () monitors (), a first channel, for transmissions of first information from one or more relay nodes () operating in the network. The first information indicates transmission, from the one or more relay nodes (), of second information on a second channel associated with the first channel. The second information indicates transmission, from the one or more relay nodes (), of third information on a third channel. The third channel is associated with the second channel and the first channel. The end node () then determines (), based on the second information, time periods during which no transmission of the third information is predicted to be performed by the one or more relay nodes () on the third channel. The end node () then schedules () a transmission of fourth information in a fourth channel during the determined time periods.

End node, relay node, and methods performed therein for handling transmission of information

Messages are transmitted to a target device over a wireless network comprising a primary channel in which first messages are transmitted in a random access procedure, and a secondary channel in which second messages are transmitted using a dedicated access procedure, wherein each of the first messages comprises a pointer to the secondary channel, each first message comprising information about the transmitting device and the target device. For each of the first and second message, a transmission opportunity comprising a time slot for transmitting the corresponding message is selected and the primary channel is scanned to determine, based on the received first messages, whether a second message will be transmitted in the time slots selected for the first or second message in which the transmitting device or the target device is involved. The selected transmission opportunities are confirmed or amended based on a result of the scanning.

Message transmission with reduced interference

A method of updating a number of retransmissions for a mesh node in a mesh network comprising a plurality of mesh nodes, wherein said number of retransmissions define how often said mesh node retransmits received messages within said mesh network, said method comprising the steps of receiving, by said mesh node, a number of data messages, wherein each of said data messages originates from a same source mesh node and is intended for a same destination mesh node in said mesh network, transmitting, by said mesh node, each of said number of data messages based on said number of retransmissions receiving, by said mesh node, a number of acknowledgement messages, wherein each acknowledgement message originates from said RD mesh node and acknowledges receipt of a particular data message of said first number of data messages, and updating, by said mesh node, said number of retransmissions based on said number of data messages and based on said number of acknowledgement messages. Complementary devices for performing a method according to the invention are also presented herein.

Method and device for updating the number of retransmissions in a wireless mesh network

A node () is configured for use in a communication network. The node () is configured to obtain a message with a source address and a destination address. The node () is also configured to determine whether the message is a type of message that is sent in response to a different message routed from the destination address to the source address, and whether a forward route () from the destination address to the source address has been established. The node () is also configured to selectively transmit the message on a backward route () that is the reverse of the forward route (), depending on the determining.

Growing community of inventors

Teramo, Italy

Piergiuseppe Di Marco