Telefonaktiebolaget Lm Ericsson (publ)

Jingcheng Zhang

Thomas Rimhagen

Per Elmdahl

Wei Shen

Per Skillermark

Piergiuseppe Di Marco

Miguel Lopez

Dennis Sundman

Yu Wang

A method of enabling a publisher mesh node to update a number of hops that is to be used for communication between said publisher mesh node and a subscriber mesh node in a wireless mesh network, wherein said method comprises the steps of periodically receiving, by said subscriber mesh node, broadcasted messages from said publisher mesh node, wherein said broadcasted messages comprise a number of hops that said broadcasted messages may traverse in said mesh network, determining, by said subscriber mesh node, that one or more periodically broadcasted messages have not been received, transmitting, by said subscriber mesh node in reply to said determination that one or more periodically broadcasted messages have not been received, a probe message to said publisher mesh node, wherein said probe message comprises a number of hops corresponding to a periodically broadcasted message that was received by said subscriber mesh node.

Method for updating a number of hops that is to be used for communication between a publisher mesh node and a subscriber mesh node in a wireless mesh network

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 gateway (), arranged for providing cloud connectivity to a network of communicatively interconnected network nodes. The gateway () comprises a backend function ()and a plurality of physical frontend devices (), for deployment in the network. The frontend devices () communicatively connect()to the backend function () for exchanging messages between a network node and the backend function (). The backend function () is common to the plurality of frontend devices () and arranged in a at least one server of a plurality of operatively connected servers, that may form part of the cloud, thereby providing for 'cloud processing' or 'virtual processing' of the messages for exchange thereof with the cloud. The physical frontend devices () may be designed to comprise transceiver functionality.

Gateway, a frontend device, a method and a computer readable storage medium for providing cloud connectivity to a network of communicatively interconnected network nodes

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

Embodiments support obtaining of information regarding a Bluetooth mesh network () operating according to a set of rules, e.g. flooding or routing, for propagating messages in the network (). It is transmitted (), from said test originator node () in accordance with said set of rules, a sequence of test messages towards said test target node (). Each of said test messages includes: parameters comprising a test message identifier being an identifier of the test message in the sequence, and a type identifier identifying the test message as a certain type associated with said parameters.

Methods and nodes for obtaining information regarding a bluetooth mesh network

A wireless device and methods for handling wake-up signaling is presented. The wireless device is configured to receive a wake-up signal comprising wake-up information and authentication information, determine whether the wake-up signal is intended for the wireless device based on the wake-up information, and determine whether the wake-up signal is authentic based on the authentication information. Upon determining that the wake-up signal is intended for the wireless device and determining that the wake-up signal is authentic, the wireless device is further configured to initiate wake-up of radio circuitry comprised in the wireless device. Related computer program, computer program product and carrier are also described.

Method and device for handling wake-up signals

According to an aspect of the proposed technology, there is provided a method performed by a network device for enabling relayed communication in at least one direction between a first communication unit and a second communication unit in a wireless communication system. The method comprises the steps of the network device specifying a relay unit for the relayed communication, and the network device determining information for scheduling and/or configuring a first transmission of a data frame from the second communication unit to the specified relay unit and a second transmission of the data frame from the specified relay unit to the first communication unit, and the network device generating a trigger frame including the information for scheduling and/or configuring the first transmission and the second transmission.

Enabling relayed communication in a wireless communication system

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.

Routing in communication networks

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.

Method, devices and a wireless mesh network for establishing a route between a route originator, RO, mesh node and a route destination, RD, mesh node in a mesh network

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.

Route discovery in a mesh communication network

The present disclosure relates to methods and arrangements in a private address resolving node of a personal area network deploying Bluetooth low energy, BLE and in particular to methods and arrangements for proactively resolving periodically updated private addresses. When performed in a private address resolving node of a personal area network deploying Bluetooth low energy, BLE, a method comprises resolving a periodically updated private address of a private address generating node connected to the private address resolving node. The private address is used in addressing messages from the private address resolving node to the private address generating nodes. The method comprises receiving (S), from a private address generating node in the personal area network, an Identity Resolving Key, IRK, the IRK being received over an encrypted link established between the private address resolving node and the private address generating node and receiving (S), from the private address generating node, private address update information defining when and how to update the private address of the private address generating node. Based on the received IRK and the received private address update information, an updated private address to be used when addressing a next message to the private address generating node is determined (S).

Bluetooth low energy address resolving

An advertising wireless device () broadcasts () an advertising message over a wireless communication link (). The advertising wireless device receives (), from an advertisement responding device (-), a request message that was sent by the advertisement responding device (-) at a certain point in time in response to the broadcasted advertising message. Said certain point in time being randomized within a listening time period during which the advertising wireless device () listens for a response to the broadcasted advertising message and is able to receive the request message.

Methods and arrangements for communication between advertising and advertisement responding wireless devices

A responding device () 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 () receives a request message () from a requesting device () in a wireless communication system (). Responsive to the request message (), the responding device () determines to transmit a response message () 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 (). The responding device () in this regard delays transmission of the response message () until the response time, by refraining from transmitting the response message () at one or more transmission opportunity times that occur after receiving the request message () but before the response time. The responding device () then transmits the response message () at the response time.

Growing community of inventors

Svärtinge, Sweden

Jingcheng Zhang