Abstract: A method includes receiving indications of a wake-up interval assigned to a station and a corresponding group to which the station belongs, wherein all stations assigned to the group are assigned the wake-up interval. The method includes waking the station during the wake-up interval and determining, using at least the indication of the group, whether information received by the station during the wake-up interval corresponds to the group. Another method includes assigning stations to one of multiple groups based on wake-up intervals, in which stations assigned to a group all have a same wake-up interval and each group has a different wake-up interval, sending indications of a corresponding wake-up interval and a corresponding group to each of the stations, and during a interval corresponding to the wake-up interval for a selected group, transmitting the indication of the selected group and associated information meant for the group.

Abstract: According to one general aspect, a method may include communicating, by a first apparatus, with at least a second apparatus via a device-to-device communication link. In various embodiments, the method may also include receiving resource allocations, from a base station. In some embodiments, the method may include determining, based at least partly on the received resource allocations, which resources are allocated to at least the second apparatus for communication with the base station. In various embodiments, the method may include based at least partly upon the resource allocations, determining when to perform direct device-to-device communication, by the first apparatus, with the second apparatus.

Abstract: In accordance with an example embodiment of the present invention, a method comprises broadcasting from a user equipment (UE) having means for device to device (D2D) communication a beacon comprising an OFDM beacon frame comprising a plurality of beacon fields; receiving at least one random access request from at least one neighbor device to trigger handshake signaling for establishment of a D2D connection; responding to one of the at least one random access request with an acknowledgement beacon including at least an identifier of the UE to confirm the D2D connection with the selected neighbor device; discovering available resources; and exchanging said resource information in the handshake signaling with the neighbor devices.

Abstract: In accordance with an example embodiment of the present invention, a method comprises identifying at least one beacon opportunity at a wireless network device; selecting a beacon channel from a beacon slot that is a flexibly allocated frequency resource; and transmitting at least one beacon signal in the selected beacon channel multiplexed in a beacon frame during the identified beacon opportunity.

Abstract: There is a method and apparatus for transmitting a beacon for D2D communications in a first radio resource selected from among a first set of radio resources of a beacon frame; and for transmitting a broadcast message in a second radio resource selected from among a second set of radio resources of the same beacon frame. In various particular embodiments: the beacon has an indication that the broadcast message is to be transmitted in the beacon frame; the beacon has an indication specifying the second radio resource; there is transmitted a broadcast message header in the second radio resource during an initial subframe of the beacon frame and the broadcast message header has an indication of how many subframes are allocated for the broadcast message; and the broadcast message header has a retransmission control field that selectively indicates which broadcast partners are to re-transmit the broadcast message.

Abstract: Method, apparatus, and computer program product embodiments are disclosed for quiet period management in wireless networks to enhance coexistence of wireless networks with other wireless networks. An example embodiment comprises: receiving control information in a wireless message in a communications channel from another device in a wireless network; receiving a packet having a duration in the communications channel in the wireless network; delaying transmission of a packet in the communications channel for an interval determined by the received control information; monitoring an ambient electromagnetic spectrum during the interval; and competing for transmission resources in the communications channel, using a carrier sense multiple access with collision avoidance access method, after the interval.

Abstract: The invention relates to a method for controlling and/or regulating an industrial process for producing or processing products, wherein a physicomathematical model of the industrial process is formed, with which control parameters for controlling or regulating the industrial process are calculated during the production or processing of the product, a number of measurement values is detected, and the model is corrected with a number of primary correction factors, the number of primary correction factors being equal to the number of measurement values. The method is characterized in that the model is corrected with a number of secondary correction factors, such as with a correction factor reflecting the speed of the phase conversion in the rolling mill to be cooled, and in that the number of all correction factors is greater than the number of all measurement values, wherein at least the secondary correction factors are calculated numerically.

Abstract: A method for providing an autonomous search function may include discovering, at a user terminal, a first access node providing access in accordance with a first radio access technology (RAT), causing an attempt to discover a second access node providing access in accordance with a second RAT in response to discovering the first access node where the first access node has a first coverage area and the second access node has a second coverage area that at least partially overlaps with the first coverage area, and causing storage of fingerprint information associated with the first access node together with storage of fingerprint information associated with the second access node. An apparatus and computer program product corresponding to the method are also provided.

Abstract: In accordance with an example embodiment of the present invention, methods and apparatus, including computer program products, are provided. In one aspect there is provided a method. The method may include configuring the device to monitor the presence of the OFDMA beacons and the quality of the OFDMA beacon receptions. The device may transmit the beacon reports that detail the sensed beacons from the beaconing device during an OFDMA beacon opportunity. In another aspect there is provided a method. The method may include configuring a dedicated beacon quality measurement agreement between two or more devices. Based on the agreement defining the beacon transmission and reception periodicity, one device transmits a beacon and the other devices in the agreement monitor the beacon. Related apparatus, systems, methods, and articles are also described.

Abstract: A steel volume is modeled in a computer by means of a plurality of volume elements. The state of the steel volume at a given time comprises, for each volume element, characteristic quantities of an enthalpy existing at said time in the respective volume element and percentages, in which the steel is available in the respective volume element at the time in austenite, ferrite and cementite phases. For at least one volume element, the computer determines the time gradient of the characteristic quantities by resolving thermal conductivity and phase transition equations. One of the characteristic quantities is a locally invariable mean interstitial element concentration within the volume element in the austenite phase thereof.

Abstract: A method is disclosed that includes selecting one or more terminals involved in a device-to-device communication to which interference caused by a transmission to one or more other terminals should be suppressed, and choosing a number of degrees of freedom from a predetermined number of degrees of freedom to be used to suppress interference towards the selected one or more terminals. The method also includes using the remaining degrees of freedom from the predetermined number to increase signal quality to the one or more other terminals and performing precoding based on the chosen number of degrees of freedom and the remaining degrees of freedom. The method further includes, using at least the performed precoding, transmitting information to the one or more other terminals. Apparatus and programs/program products are also disclosed.

Abstract: In accordance with an example embodiment of the present invention, a method comprises broadcasting from a user equipment (UE) having means for device to device (D2D) communication a beacon comprising an OFDM beacon frame comprising a plurality of beacon fields; receiving at least one random access request from at least one neighbor device to trigger handshake signaling for establishment of a D2D connection; responding to one of the at least one random access request with an acknowledgement beacon including at least an identifier of the UE to confirm the D2D connection with the selected neighbor device; discovering available resources; and exchanging said resource information in the handshake signaling with the neighbor devices.

Abstract: According to one general aspect, a method may include communicating, by a first apparatus, with at least a second apparatus via a device-to-device communication link. In various embodiments, the method may also include receiving resource allocations, from a base station. In some embodiments, the method may include determining, based at least partly on the received resource allocations, which resources are allocated to at least the second apparatus for communication with the base station. In various embodiments, the method may include based at least partly upon the resource allocations, determining when to perform direct device-to-device communication, by the first apparatus, with the second apparatus.

Abstract: A method for non-contact measurement of multiple shaft parameters is provided. The method includes magnetically encoding multiple sections of the shaft using pulsed currents. The method also includes sensing a magnetic field of the encoded sections of the shaft using multiple sensors arranged circumferentially about the shaft. Further, the method includes generating a spectrum of periodical variations based on sensed magnetic field of the encoded sections of the shaft during rotation and determining multiple parameters based on recurrences of patterns of the spectra.

Abstract: In accordance with an example embodiment of the present invention, a method comprises determining at a base station an activity level, and selecting an availability mode based at least in part on the activity level, wherein the availability mode is one of a full-availability mode, a semi-availability mode and a minimum-availability mode. The method also comprises configuring radio resources for at least the minimum-availability mode and switching to the selected availability mode.

Abstract: Disclosed herein is a method comprising using a first frequency for communication in a first direction with an infrastructure node and a second frequency for communication in a second direction with the infrastructure node during a normal operation phase in a wireless network. The method may further comprise reversing the frequencies used for the communication in the first and second directions with the infrastructure node during a link reversal phase.

Abstract: A computer determines a subsequent state of a steel volume, based on an instantaneous initial state of said steel volume and at least one volumetric surface, the temporary influence quantities acting on said steel volume, by resolution of an equation of thermal condition and phase change. The states include for at least one volumetric element of the steel volume, a local distribution in concentration of a alloy element mobile in the steel, the local proportions of the modeled phases of the steel and a quantity describing a local energy content of the steel. The phases include austenite and another phase, generally, ferrite or cementite. In the context of the change equation, the concentration levels of the mobile alloy element, which are located on either side of the phase boundary, between the austenite and the other phase are determined by resolution of a Stephan problem.

Abstract: Various example embodiments are disclosed relating to feedback and link adaptation techniques for wireless networks. According to an example embodiment, an apparatus may include a processor or controller. The controller may be configured to determine a channel quality indication (CQI) value for each of a plurality of wireless sub-channels, discard any of the CQI values older than a threshold time, leaving a set of current CQI values, determine a percentile CQI value based on the set of current CQI values, and transmit the percentile CQI value to an infrastructure node. The infrastructure node, may, for example, determine or select one or more data transmission parameters, such as a modulation scheme and/or coding rate, based at least in part on the received percentile CQI value.

Abstract: Various apparatuses, methods and computer programs are provided. A first apparatus includes: a controller configured to control transmitter circuitry to transmit, according to a first communication protocol, a first request to a second apparatus, the first request being for assisting a wireless communication link, according to a second communication protocol, to be established between the apparatus and a third apparatus. In response to receiving the first request, the second apparatus transmits a second request to the third apparatus. The third apparatus is configured to transmit signals at a rate, each signal being for enabling a wireless communication link to be established between the third apparatus and another apparatus (such as the first apparatus). In response to receipt of the second request, the third apparatus changes the rate at which the signals are transmitted.

Abstract: Disclosed herein is a method comprising detecting, by a relay node in a wireless network, an inner automatic repeat request (ARQ) error on a local link of the wireless network, and sending, in response to the detecting, an outer ARQ status report identifying one or more packets that were not successfully received, the outer ARQ status report including an originating node ID identifying the relay node as an originator of the outer ARQ status report.