Telefonaktiebolaget Lm Ericsson (publ)

Pontus Arvidson

Per Skillermark

Piergiuseppe Di Marco

Bo Hagerman

Leif Wilhelmsson

Yi-Pin Eric Wang

Magnus Hurd

Roman Chirikov

Richard Tano

Håkan Andersson

Roland A Smith

Christian Skärby

Kai-Erik Sunell

Ylva Timner

Robert Karlsson

David Sandberg

Agnes Rensfelt

Henrik RydÉn

Lars Roselius

Systems and methods related to traffic flow prediction in a wireless network are disclosed. In one embodiment, a computer-implemented method comprises collecting training data comprising Internet Protocol (IP) addresses extracted from packets for traffic flows in a wireless network and one or more actual traffic type related parameters for each of the traffic flows. The method further comprises training heavy-hitter IP address encodings based on the extracted IP addresses and encoding the extracted IP addresses using the trained heavy-hitter IP address encodings. The method further comprises training a traffic type predictor of a traffic flow predictor based on the encoded IP addresses and the one or more actual traffic type related parameters for each of the traffic flows, where the traffic type predictor is a learning model that maps encoded IP addresses to one or more predicted traffic type related parameters.

Traffic flow prediction in a wireless network using heavy-hitter encoding and machine learning

A method of supporting establishment of a path from a source node to a destination node in wireless mesh network, said path comprising at least one intermediate node, said method comprising the steps of receiving, by an intermediate node, a synchronous notification message, from a neighbouring node, for synchronizing said intermediary node with said neighbouring node, and establishing, by said intermediate node, in response to said receipt of said synchronous notification message, a reciprocal path between said intermediate node and said neighbouring node, wherein said reciprocal path is used in a path between said source node and said destination node. A corresponding node device arranged for performing the method is also presented herein.

Method of, and a node device for, supporting establishment of a path from a source node to a destination node in wireless mesh network

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 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

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

Embodiments include methods, for an intermediate node in a wireless mesh network, to identify a critical link in a path between a source node and a destination node in the wireless mesh network. Such methods include receiving a first message relating to a discovery of a path between the source node and the destination node. Such methods also include forwarding the first message to one or more other nodes in the wireless mesh network based on an entry in a discovery table, stored in the intermediate node, that indicates that the intermediate node is part of a critical link in the path. The first message can be a path request message or a path reply message, and the methods can include various other operations associated with each type of first message. Other embodiments include wireless devices configured to operate as intermediate nodes in accordance with these methods.

Detecting critical links in bluetooth mesh networks

Embodiments herein relate to a method performed by a radio network node () for handling communication of data to a wireless device () in a wireless communication network (). The radio network node () determines to transmit data associated with a first radio access technology, RAT, using a second RAT when a criterion is fulfilled, and triggers a transmission of the data to the wireless device () using the second RAT.

Radio network node, wireless device and methods performed therein

A method for supporting the establishment of a path for transmitting a message in a mesh network, wherein said message is to be transmitted from a source node in said mesh network to a destination node, via one or more intermediary nodes, in said mesh network. The method comprises the steps of receiving, by an intermediary node in said mesh network, a path discovery message originating from said source node in said mesh network, said path discovery message comprising a path quality parameter, updating, by said intermediary node, said path quality parameter based on a quality of link associated with a node from which said intermediary node received said path discovery message, and broadcasting, by said intermediary node, said path discovery message wherein said broadcasted path discovery message comprises said updated path quality parameter. A complementary method and corresponding node are also presented herein.

Model based path selection in a Bluetooth low energy, BLE, mesh network

Methods and systems for providing virtual beacons are presented. According to one aspect, a method for providing a virtual beacon at a first location comprises transmitting, by a transmitter at a second location geographically different from the first location, an information signal using a transmit power level, Pj, and including an advertised transmit power level, PA, both selected to be indicative of a distance, d, between a location of a receiver of the information signal and the first location. The signal transmitted from the second location emulates a signal that would have been produced by a beacon located at the first location. The information signals may be aimed at one or more User Equipments (UEs), and/or may be focused on one or more specific target locations rather than on individual UEs.

Virtual beacons

A method of operating a node device in a network of communicatively interconnected node devices wherein a node device is arranged to transmit a message once in said network, the node device comprising a host part and a controller part. The host part is arranged for maintaining a list identifying messages received at the node device and the controller part is arranged for storing messages to be transmitted by the node device in a cache buffer. The method comprises the steps of removing, by the controller part, a message from the cache buffer, forwarding, by the controller part, to the host part, upon removal of the message, an update message identifying the removed message, and updating, by the host part, based on the update message, the list of messages. A corresponding node device arranged for performing a method according to the present disclosure and a computer program product are also presented herein.

Message cache management in a mesh network

A method of operating a node device () in a network () of communicatively interconnected node devices wherein a node device () is arranged to transmit a message once in said network (), the node device () comprising a host part () and a controller part (). The host part () is arranged for maintaining a list () identifying messages received at the node device () and the controller part () is arranged for storing messages to be transmitted by the node device () in a cache buffer (). The method comprises the steps of removing, by the controller part (), a message from the cache buffer (), forwarding, by the controller part (), to the host part (), upon removal of the message, an update message identifying the removed message, and updating, by the host part (), based on the update message, the list of messages (). A corresponding node device () arranged for performing a method according to the present disclosure and a computer program product are also presented herein.

A method performed by a first network node for reducing the number of colliding transmissions in a mesh network is provided. The first network node and the second network node are configured to use periodic advertising for transmissions in the mesh network. The first network node calculates () a first duration related to a transmission of data of a first size to be transmitted to the second network node. The first network node further calculates () a second duration related to a period of time until a reception or a transmission of data is scheduled for second network node will occur. Based on the first and second duration the first network node decides () whether or not to decrease the first size of the transmission to a second size, so that first duration becomes shorter than the second duration. The first network then performs () the transmission according to the outcome of the deciding ().

Network node and methods in a mesh network

A method for identifying a critical link in a path between a source node and a destination node in a wireless mesh network, wherein said method comprises the steps of receiving, a forwarding path request, PREQ, message relating to a discovery of a path between said source node and said destination node, determining that further PREQ message relating to the discovery of said path are not received during a predetermined duration, and, triggered by said determination, setting a first critical flag in a discovery table entry associated with said path between said source node and said destination node, and forwarding said received PREQ message to one or more other nodes in said wireless mesh network.

Method performed by a first communication device () for performing one or more actions to resolve a state mismatch between the first communication device () and a second communication device () operating in a communications network (). The first communication device () searches () for one or more transmissions from the second communication device () that are indicative of a state mismatch between the first communication device () and the second communication device (). Upon detection of the one or more transmissions, the first communication device () performs () one or more actions to resolve the state mismatch. The performing () of the one or more actions is according to one of: a) a current state of the second communication device () and b) a transition to a state different from a current state of the first communication device ().

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Danderyd, Sweden

Pontus Arvidson