Showing papers by "Nokia published in 2005"

The Third Data Release of the Sloan Digital Sky Survey

Abstract: This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg2, photometric and astrometric catalogs of the 141 million objects detected in these imaging data, and spectra of 528,640 objects selected over 4188 deg2. The pipelines analyzing both images and spectroscopy are unchanged from those used in our Second Data Release.

Software Architecture as a Set of Architectural Design Decisions

Abstract: Software architectures have high costs for change, are complex, and erode during evolution We believe these problems are partially due to knowledge vaporization Currently, almost all the knowledge and information about the design decisions the architecture is based on are implicitly embedded in the architecture, but lack a first-class representation Consequently, knowledge about these design decisions disappears into the architecture, which leads to the aforementioned problems In this paper, a new perspective on software architecture is presented, which views software architecture as a composition of a set of explicit design decisions This perspective makes architectural design decisions an explicit part of a software architecture Consequently, knowledge vaporization is reduced, thereby alleviating some of the fundamental problems of software architecture

Named graphs, provenance and trust

Abstract: The Semantic Web consists of many RDF graphs nameable by URIs. This paper extends the syntax and semantics of RDF to cover such Named Graphs. This enables RDF statements that describe graphs, which is beneficial in many Semantic Web application areas. As a case study, we explore the application area of Semantic Web publishing: Named Graphs allow publishers to communicate assertional intent, and to sign their graphs; information consumers can evaluate specific graphs using task-specific trust policies, and act on information from those Named Graphs that they accept. Graphs are trusted depending on: their content; information about the graph; and the task the user is performing. The extension of RDF to Named Graphs provides a formally defined framework to be a foundation for the Semantic Web trust layer.

Interaction in 4-second bursts: the fragmented nature of attentional resources in mobile HCI

Abstract: When on the move, cognitive resources are reserved partly for passively monitoring and reacting to contexts and events, and partly for actively constructing them. The Re-source Competition Framework (RCF), building on the Multiple Resources Theory, explains how psychosocial tasks typical of mobile situations compete for cognitive resources and then suggests that this leads to the depletion of resources for task interaction and eventually results in the breakdown of fluent interaction. RCF predictions were tested in a semi-naturalistic field study measuring attention during the performance of assigned Web search tasks on mobile phone while moving through nine varied but typical urban situations. Notably, we discovered up to eight-fold differentials between micro-level measurements of atten-tional resource fragmentation, for example from spans of over 16 seconds in a laboratory condition dropping to bursts of just a few seconds in difficult mobile situations. By cali-brating perceptual sampling, reducing resources from tasks of secondary importance, and resisting the impulse to switch tasks before finalization, participants compensated for the resource depletion. The findings are compared to previous studies in office contexts. The work is valuable in many areas of HCI dealing with mobility.

Adaptive user interface input device

Abstract: The present invention relates to an adaptable user interface. The adaptable user interface provides a more error free input function as well as greater ease of use when being used during certain events such as while moving. A user interface in accordance with the principles of the present invention comprises a user input, at least one sensor, and a display unit functionally in communication with the at least one sensor and adapted to change its user interface input mode. The user interface is capable of adapting its user interface input in response to a stimulus sensed by the sensor.

Usability testing of mobile applications: a comparison between laboratory and field testing

Abstract: Usability testing a mobile application in the laboratory seems to be sufficient when studying user interface and navigation issues. The usability of a consumer application was tested in two environments: in a laboratory and in a field with a total of 40 test users. The same problems were found in both environments, differences occurred in the frequency of findings between the contexts. Results indicate that conducting a time-consuming field test may not be worthwhile when searching user interface flaws to improve user interaction. In spite of this, it is possible that field testing is worthwhile when combining usability tests with a field pilot or contextual study where user behavior is investigated in a natural context.

Method and mobile terminal device including smartcard module and near field communications means

Abstract: According to the present invention, a method for controlling a mobile terminal device is provided, wherein said device comprises a smartcard module and a near field communication module. In a first operation a smartcard operation on said mobile terminal device is started which results in an activation or switching on of said smartcard module. The smartcard application may be started by a user or based on the location of said mobile terminal device. That is the case for instance if the mobile terminal device is located in the area of a point of sales terminal, the smartcard application will automatically starts. Further, time controlled starting of certain applications is conceivable. Then it may be determined if said started smartcard application is an application for performing data transactions with external entities and in case of an affirmative determination a connection between said smartcard module and said NFC-module will be activated.

A QRD-M/Kalman filter-based detection and channel estimation algorithm for MIMO-OFDM systems

Abstract: The use of multiple transmit/receive antennas forming a multiple-input multiple-output (MIMO) system can significantly enhance channel capacity. This paper considers a V-BLAST-type combination of orthogonal frequency-division multiplexing (OFDM) with MIMO (MIMO-OFDM) for enhanced spectral efficiency and multiuser downlink throughput. A new joint data detection and channel estimation algorithm for MIMO-OFDM is proposed which combines the QRD-M algorithm and Kalman filter. The individual channels between antenna elements are tracked using a Kalman filter, and the QRD-M algorithm uses a limited tree search to approximate the maximum-likelihood detector. A closed-form symbol-error rate, conditioned on a static channel realization, is presented for the M=1 case with QPSK modulation. An adaptive complexity QRD-M algorithm (AC-QRD-M) is also considered which assigns different values of M to each subcarrier according to its estimated received power. A rule for choosing M using subcarrier powers is obtained using a kernel density estimate combined with the Lloyd-Max algorithm.

Mobile communications terminal and method therefore

Abstract: A mobile terminal has a controller, a display and an input device connected to the controller, and a digital object browser for browsing among a plurality of available digital objects. A first representation and a second representation of each of the digital objects are presentable on a display screen. The first representations of the digital objects are presented along a predefined path on the display screen, the first representation of a focused one of the digital objects being shown in a focus area on the display screen. For the focused digital object, the second representation thereof is presented in a preview area on the display screen. In response to a user input given on the input device, a desired scrolling operation is performed among the first representations presented, thereby shifting the positions of the first representations on the display screen along the path accordingly, updating the focus area to reflect a change in focus from the focused digital object to another digital object by presenting in the focus area the first representation of the other digital object, as well as updating the preview area correspondingly by presenting therein the second representation of the other digital object.

Enhancing wireless location privacy using silent period

Abstract: The advance of ISM-band radio-based tracking systems (for example, wireless LAN-based tracking system) extends the application of location-based services (LBS), but it also threatens to allow the movement of users to be tracked when they are transmitting frames. Several protection methods based on periodic address updates have already been proposed. However, new correlation attacks, which utilize the correlation between the old and new addresses of the same node, can defeat current protection methods. To combat such attacks, we propose the concept of a silent period. A silent period is defined as a transition period between the use of new and old pseudonyms, when a node is not allowed to disclose either the old or the new address. Through analysis, we find that a silent period should contain a constant period and a variable period. The effect of the constant period is to mix the spatial relation between the node's disappearing points and emerging points. The variable period mixes the temporal relation between the node's disappearing times and emerging times. We evaluate the performance of the silent period through simulation. The results show that the silent period proposal significantly reduces the duration of time a node can be tracked continuously. There are still many open research problems before random address can be implemented to protect wireless location privacy, but silent period protocol is the first step to realizing it.

Automatic image retargeting

Abstract: We present a non-photorealistic algorithm for retargeting large images to small size displays, particularly on mobile devices. This method adapts large images so that important objects in the image are still recognizable when displayed at a lower target resolution. Existing image manipulation techniques such as cropping works well for images containing a single important object, and down-sampling works well for images containing low frequency information. However, when these techniques are automatically applied to images with multiple objects, the image quality degrades and important information may be lost. Our algorithm addresses the case of multiple important objects in an image. The retargeting algorithm segments an image into regions, identifies important regions, removes them, fills the resulting gaps, resizes the remaining image, and re-inserts the important regions. Our approach lies in constructing a topologically constrained epitome of an image based on a visual attention model that is both comprehensible and size varying, making the method suitable for display-critical applications.

Softrouter separate control network

Abstract: An embodiment of the exemplary SoftRouter architecture includes two physically separate networks, a control plane network and a data plane network. The data plane network is one physical network for the data traffic, while the control plane network is another physical network for the control traffic. The topology of the data plane network is made up of interconnected forwarding elements (FEs). The topology of the control plane network is made up interconnected control elements (CEs). This physical independence of the control plane network from the data plane network provides for a secure mechanism to communicate among the CEs in the control plane network. In addition, this physical independence provides improved reliability and improved scalability, when compared to the traditional router architecture, where control plane message are in-band with the data plane.

Motion-input device for a computing terminal and method of its operation

Abstract: The invention relates to a motion-input device for a computing device, comprising a housing; a three-axis acceleration sensor arranged in said housing for outputting inertia signals related to the orientation and the movement of the motion-input device with a three-axis compass arranged in said housing, for outputting magnetic field signals related to the magnetic field orientation of the motion-input device, wherein said motion-input device is provided with a transfer component for transferring said magnetic field signals and said inertia signals to said computing device.

Protective devices for a mobile terminal

Abstract: This invention describes a protective device and associated method for protecting (including the protection from water and dust) a mobile terminal whether or not the terminal is in use, and for providing a hands-free operation of the mobile terminal, wherein the mobile terminal can be a mobile phone, a personal digital assistant (PDA), a pager, a MP3 player, or any similar portable communication device or a mobile electronic device.

Group details of group services

Abstract: A group detail indicator is provided that relates to group communication in a communication system. The group detail indicator provides information on at least an identity of a group and a type of the group. The group detail indicator also is attached to one of a request to initiate a group communication session and an instant messaging request.

Displaying a map having a close known location

Abstract: A system and method is provided for displaying a map having a close known location and a destination and for providing navigation recommendations for traveling from the close known location to the destination. A user may use a mobile device to submit a request for navigation instructions for navigating from a starting point to a destination. The request may be submitted to a web server, to the mobile device itself, or to another device that can provide navigation instructions. The web server/mobile device or other device determines a recommended route based on the starting point and the destination, and attempts to locate a close known location to the destination near the recommended route. Navigation instructions are provided to the user including directions from the close known location to the destination.

Method and system for beam expansion in a display device

Abstract: An exit pupil extender wherein the relative amount of different color components in the exit beam is more consistent with that of the input beam. In order to compensate for the uneven amount in the diffracted color components in the exit beam, the exit pupil extender, comprises a plurality of layers having additional diffraction gratings so as to increase the amount of diffracted light for those color components with a lower amount. Additionally, color filters disposed between layers to reduce the diffracted light components with a higher amount.

System, method and computer program product for managing physiological information relating to a terminal user

Abstract: A system for managing physiological information includes a mobile terminal and at least one destination. The terminal is capable of transferring physiological information relating to a terminal user. The destination(s), in turn, are capable of receiving the physiological information and performing at least one operation based upon the physiological information. The destinations can return content to the terminal, where the content is selected based upon the operation(s) performed by the destination(s). Upon receiving the content, then, the terminal is also capable of performing at least one operation based upon the content. The system can also include a mobile station for facilitating the transfer of physiological information and content between the terminal and the destination(s).

A 2.14-GHz Chireix outphasing transmitter

Abstract: A Chireix outphasing system for 2.14 GHz including two saturated class-B pseudomorphic high electron-mobility transistor power amplifiers (PAs) and a Chireix power-combining circuit is reported in this paper. In an outphasing system, an arbitrary input signal is divided into two constant envelope branches. The phase-only modulated branches are then amplified with high-efficiency nonlinear PAs. By controlling the phases of these branches, the original signal waveform can be reconstructed, ideally with high efficiency and perfect linearity. In this paper, the design and implementation of an experimental Chireix outphasing system for a wide-band code division multiple access 2.11-2.17-GHz downlink band is presented. The measured system efficiency for 7-dB backed-off quadrature phase-shift keying signal was 42.2% with a channel power of 31.2 dBm.

Managing an access account using personal area networks and credentials on a mobile device

Abstract: A system, apparatus, and method are directed towards automatically managing an access account at an access point using near field communications and credentials stored on a mobile device. The mobile device receives, out-of-band, information for use in creating an account for accessing network resources from the access point. As the mobile device is brought into proximity with the access point, a wireless network connection is established using a near field communication (NFC) protocol. The information, which may include a user credential, account information, and so forth, is communicated to the access point. The access point employs the information to establish an account and create an environment from which access to the network resources may be obtained. Upon termination, the access point removes from itself any user specific data. The access point may provide also session related information useable in billing the user of the mobile device.

Electronic near field communication enabled multifunctional device and method of its operation

Abstract: The invention relates to a method for the operation of a near field communication multifunction device in environments where interaction is desired between near field communication capable devices using multiple data formats, compromising the operations of performing a first initiation procedure for a first data format according to a protocol of a certain standard; performing a second initiation procedure for a second data format according to a protocol of a certain standard; performing a delay, and repeating these operations in a repetitive process.

Sport movement analyzer and training device

Abstract: A sport movement analyzer and training device and method, in real time, detect, analyze, correct and re-create sport movements of a user. An analyzer is secured to a user's wrist engaged in sport movements. A sensing unit in the analyzer provides signals representative of the movement of the wrist at various swing positions along a swing path during a sport movement. A processor in the analyzer processes the signals to measure various parameters descriptive of a sport performance of the user at the swing positions along the swing path. Stored programs in the analyzer service the processor in processing the signals representative of the sport performance for display to the user. A history of past sport performances by the user is stored for comparison purposes with current sport performances.

Method and device for controlling and providing indications of communication events

Abstract: The present invention relates to the field of contact-less transactions, in particular to the field of near field communication and more particularly to smart card transactions over radio frequency identification interface. The present invention relates also to a method and system for providing a user of a mobile terminal with additional information and control over various transaction processes and at the same time additional visibility to various transaction service providers by providing indications of near field communication events on a near field communication device, with the steps of detecting a near field communication event, obtaining at least one indication of near field communication events in accordance with said detected near field communication event, and providing said at least one obtained indication.

Controlling services in a packet data network

Abstract: A method and system controls services in a packet data based communication network comprising terminal devices and service entities. In response to a change detected in the state of a connection between a terminal device and a gateway node, a service policy request for the terminal device is sent from the gateway node to a session control means. Service policies including service information indicating which service entities and in which order are to be utilized for providing services to the terminal device, are generated. Service policies are sent to the gateway node. At the service entities, services are provided.

Multimode roaming mobile devices

Abstract: A mobile device for roaming between wireless communications networks in different geographical regions is provided. The mobile device includes an interface configured to transmit and receive signals over a wireless channel according to a communication mode using one of a plurality of access technologies. The device also includes a store holding a preferred roaming list having a common block holding data common to the plurality of access technologies, and a set of access technology-specific blocks each holding channel acquisition data specific to one of the plurality of access technologies for setting up the communication mode.

Mobile communication device and method therefor

Abstract: Methods, systems and mobile communication devices for the operation of mobile communication devices; such a method including: providing an operable display area on a mobile communication device; displaying an array of one or more selectable items in said operable display area; displaying an array of features for said selected one item; and providing for highlighting a selected one item of the said one or more selectable items and/or features.

Administration of wireless local area networks

Abstract: Methods and systems for managing access to a wireless local area network are provided. A wireless access point (AP) may use a unified approach that utilizes an out-of-band channel to communicate authentication key and network address information to a guest device, and utilizes an in-band channel to establish communications with the guest device, and also provides support for in-band setup on all devices. The ability to use out-of-band where possible provides for an increase to security and usability, and the possibility of delegating access from one device to another. The unified approach thereby also provides easy management of guest access to the WLAN.

H.264/AVC video for wireless transmission

Abstract: H.264/AVC will be an essential component in emerging wireless video applications thanks to its excellent compression efficiency and network-friendly design. However, a video coding standard itself is only one component within the application and transmission environment. Its effectiveness strongly depends on the selection of appropriate modes and parameters at the encoder, at the decoder, as well as in the network. In this paper we introduce the features of the H.264/AVC coding standard that make it suitable for wireless video applications, including features for error resilience, bit rate adaptation, integration into packet networks, interoperability, and buffering considerations. Modern wireless networks provide many different means to adapt quality of service, such as forward error correction methods on different layers and end-to-end or link layer retransmission protocols. The applicability of all these encoding and network features depends on application constraints, such as the maximum tolerable delay, the possibility of online encoding, and the availability of feedback and cross-layer information. We discuss the use of different coding and transport related features for different applications, namely video telephony, video conferencing, video streaming, download-and-play, and video broadcasting. Guidelines for the selection of appropriate video coding tools, video encoder and decoder settings, as well as transport and network parameters are provided and justified. References to relevant research publications and standardization contributions are given.

Mobile communications terminal having an improved user interface and method therefor

Abstract: A mobile communication terminal (1) having a display (3) with an application area (22) thereon. The application area is partitioned into at least two unequally sized sections (22a, 22b). The size of the application area allocated to the respective application area sections (22a, 22b) is dynamically controlled in response to user input.