Innoka Oy

Wirepas Oy

Nokia Corporation

Nokie Technologies Oy

Marko Hännikäinen

Timo D Hämäläinen

Risto Rautee

Janne Rekonius

Mikko Kohvakka

Philip Ginzboorg

Kari Juhani Leppänen

Panu Hämäläinen

Janne Kulmala

Petri Kukkala

Antti Laine

Jukka Suhonen

A method for establishing an encrypted communication channel is described. Query IDs are generated at a first device. Each query ID identifies a keyword in a set of keywords. Query IDs are received, at a second device. A second set of keywords is determined by the second device based on the query IDs. Match IDs are determined based on the second set. Each match ID identifies a keyword in the second set. An encryption key is generated based on the second set. A response is sent which includes the match IDs and an encrypted message. At the first device, the second set is determined based on the match IDs. The second set includes keywords of the first set of keywords identified by the match IDs. The encryption key is generated at the first device and the encrypted message is decrypted. Apparatus and computer readable media are also described.

Discovery and secure transfer of user interest data

A node device () of a wireless sensor network comprises a receiver () for receiving transmissions from other nodes. A controller () selectively switches on said receiver () according to a timetable. The node device () 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 () reads from memory previously received information about neighboring nodes with which said node device () did not yet maintain synchronization. The controller () utilizes such stored information to selectively switch on the receiver () to attempt receiving a beacon transmission from such a neighboring node.

Energy-efficient neighbor discovery for mobile wireless sensor networks

The invention relates generally to a method and arrangement for real-time betting with an off-line terminal, and especially to the technological field of keeping reliable time in the off-line terminal when handling, within a communications system comprising a distributed domain and a central domain, electronic records that contain predictions of the outcome of a certain incident. Within the distributed domain a multitude of electronic records that contain predictions of the outcome of the incident are generated and furnished with a cryptographically protected proof of a certain moment of the distributed domain's local time associated with the generation of the electronic record.

Method and arrangement for real-time betting with an off-line terminal

Methods and arrangements are provided for handling, within a communications system comprising a distributed domain and a central domain, electronic records that contain predictions of the outcome of a certain incident. Within the distributed domain there is generated, before the outcome of the incident is known, a multitude of electronic records that contain predictions of the outcome of the incident. The electronic records are conveyed from the distributed domain to the central domain. After the outcome of the incident is known, the central domain finds out which of the electronic records, if any, contain correct predictions of the outcome of the incident. Each of the electronic records is furnished, within the distributed domain, with a cryptographically protected proof of a certain moment of time associated with the generation of the electronic record. The central domain accepts only those of the electronic records conveyed thereto as valid for which the cryptographically protected proof of a certain moment of time associated with the generation of the electronic record shows that said certain moment of time was not later in time than a certain time limit.

Methods and arrangments for realising betting with off-line terminals

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 () using a time slotted channel access scheme. A headnode of a second cluster () known the first frequency and selects a second, different frequency for use in wireless communication of information within said second cluster () using a time slotted channel access scheme. The headnode of the first cluster () is informed about the second frequency selected for the second cluster (). Information from the headnode of said first cluster () to the headnode of said second cluster () is communicated on said second frequency, using the same time slotted channel access scheme as other nodes in said second cluster ().

Energy efficient wireless sensor network, node devices for the same and a method for arranging communications in a wireless sensor network

A configurable protocol engine (CPE) capable of constructing () a desired protocol structure () according to the received configuration information. In addition, the CPE schedules the processing of received service primitives according to the priority levels thereof. The configuration information may include service requirements (), indications of hardware and software resources (), and the required QoS (Quality of Service,) level. The CPE may be implemented as software, hardware, or as a combination of both.

Configurable protocol engine

Methods and arrangements are provided for handling, within a communications system comprising a distributed domain () and a central domain (), electronic records that contain predictions of the outcome of a certain incident. Within the distributed domain (), a multitude of electronic records are generated that contain predictions of the outcome of the incident and are conveyed () from the distributed domain () to the central domain (). Each of the electronic records is furnished (), within the distributed domain (), with a cryptographically protected proof of a certain moment of time associated with the generation of the electronic record. The central domain () accepts () only those of the electronic records conveyed thereto as valid for which the cryptographically protected proof of a certain moment of time associated with the generation of the electronic record shows that said certain moment of time was not later in time than a certain time limit.

Growing community of inventors

Pirkkala, Finland

Marko Hännikäinen