Abstract: A method (600) for preparing an interfrequency handover of a certain communication connection from a first frequency to a second frequency features periodically intermitting (603) the transmission/receipt of data on the first frequency for certain transmission gaps. The number of transmission gaps is at least one during each transmission period and a certain sequence of transmission periods (420, 520) is used. Measurements are performed (607) on the second frequency during the transmission gaps on the first frequency. In the step of intermitting the transmission/receipt of data the transmission/receipt of data is intermitted within at least on transmission period for a certain transmission gap (311, 411) having a first duration and for a certain second transmission gap (312, 412) having a second duration. The second duration is different from the first duration. A mobile station (700), a network element (710) and a network control element (720) are also presented.

Abstract: The protection circuit (30) comprises at least one switch (FET1, FET2) comprising at least one control means (G1, G2) for adjusting the conductivity of said at least one switch (FET1, FET2). The conductivity is arranged to be adjustable by means of an electrical control conducted to the control means (G1, G2).

Abstract: The invention relates to a method for reducing the power consumption of a mobile station (2) connected to a packet-switched network (4), in which packet-switched network information is sent in the form of data frames. In the method, a paging period is specified for the mobile station for sending paging messages (UD1) essentially at the intervals of said paging period to the mobile station, the mobile station (2) is set to the standby mode at least for the time of the reception of the paging messages (UD1), and the mobile station, which is in the standby mode, is set to the idle mode after the reception of the paging message (UD1). In the idle mode, some of the functions of the mobile station (2) are set to the power saving mode or switched off.

Abstract: A method is disclosed for a mobile station for performing a handover from a first network connection to a second network connection. A mobile telecommunication system provides for non-real time telecommunication connections over a radio interface between mobile stations and the fixed parts of the mobile telecommunication system. At least one active non-real time telecommunication connection is between a mobile station and the fixed parts of the mobile telecommunication system is suspended (704) before performing a handover (702?) from the first network connection to the second network connection. After the new connection has been established the suspended non-real time telecommunication connection are resumed (705).

Abstract: An IP telephony network is made connectable to an existing PBX or other equipment connected to a PSTN via an IP telephone gateway/shuttle and relay and a remote hook flash allows a user with a remote IP terminal or POTS phone access to the features available on the existing PBX or other equipment.

Abstract: The invention relates to a method and to associated radio access networks and network elements for assigning values of service attributes to transmissions between a user equipment and a radio access network. In order to allow for an improved assignment of values of service attributes, it is proposed that, upon request of such a transmission by a user equipment of a subscriber registered with some radio access network the method comprises determining values of service attributes that are to be used for the transmission requested by said user equipment based on at least one value of at least one service attribute defined by a stored subscriber specific service profile, and based on at least one stored common value of at least one service attribute.

Abstract: A method of numbering data packets in a packet-switched telecommunications system which utilizes acknowledged transmission and the telecommunications protocol of which comprises a convergence protocol layer for converting user data packets into convergence protocol packets, and a link layer for transmitting convergence protocol packets as data units and for acknowledging the transmission. A data packet number is defined for the convergence protocol packets to be sent by a counter and the convergence protocol packets to be sent are transmitted to the link layer for transmission without the data packet number. A data packet number is also defined for received convergence protocol packets by means of the counter and an acknowledgement of received convergence protocol packets is transmitted to the transmitter.

Abstract: A communications device such as a mobile phone has a main body communications circuit and a movable housing element such as a touch sensitive slide or a flip-type hinged structure. In one embodiment, the main body communications circuit responds to a touch sensitive slide signal, for providing a communications signal to a communications system. The communications device includes a main body or housing for containing the main body communications circuit of the communications device, as well as a speaker and display. The touch sensitive slide responds to a contact force by a user, for providing the touch sensitive slide signal containing information about a position of the contact force applied by the user on the touch sensitive slide. The touch sensitive slide is slidably or hingeably mounted on the main body, and may contain slide position sensing. In this embodiment, the touch sensitive signal contains information about the position of the touch sensitive slide in relation to the housing.

Abstract: The invention relates to a method for arranging communication between terminals and an access point in a communication system applying data transmission frames. The data frames (FR) comprise timeslots for uplink and downlink communications between the terminals and the access points. The terminals can be allocated one or more timeslots in frames. The spatial signature of at least two terminals is determined, and in at least part of the frames, at least partly simultaneous timeslots are allocated to at least two terminals. Measurements are taken of a signal transmitted by the terminal and used to estimate the timing and frequency offsets and the properties of the communication channel. The simultaneous time slot allocation for terminals is done based on measurement results.

Abstract: Apparatus, and an associated method, provides for field-testing and calibration of a WLAN device. In testing of the receive portion of the WLAN device, test apparatus is provided with a transmit signal of known characteristics. The test apparatus selectably attenuates the transmit signal to form an attenuated signal. The WLAN device is connected to receive the transmit signal, once attenuated by the test apparatus. Responsive to differences between measured and calculated characteristics of the transmit signal, calibration for determination of proper operation of the WLAN device is made and calibration of the WLAN device is effectuated.

Abstract: A method and the corresponding devices are disclosed for transmitting control information on a control channel associated with a traffic channel. The traffic channel is determined to be either a full- or half rate channel or a quarter rate channel. As a response to determining the traffic channel to be a full- or half rate channel, a control information block of fixed size is transformed into a first number of control information bursts which are all transmitted. As a response to determining the traffic channel to be a quarter rate channel, a control information block of said fixed size is transformed into a second number of control information bursts, where said second number is smaller than the first number. Said second number of control information bursts are transmitted. It is checked, whether a retransmission is requested concerning said second number of transmitted control information bursts.

Abstract: A system and method is proposed to significantly reduce the peak to average power ratio (PAPR) for an OFDM system by stabilizing the signal envelope. By using partial response (PR) signaling to spread each sub-symbol over multiple subcarriers, the signal is first compress in time. The signal is then rearranged such that it is possible to stabilize the envelope at some constant value ?, thus improving the PAPR without using excessive time-bandwidth resources.

Abstract: The system includes a transmitter for generating a signal and a cyclic prefix, wherein the transmitter suppresses a plurality of sub-symbols of the signal to produce a partial response signal. A portion of the partial response signal is dropped and the resulting truncated signal is used to modulate a carrier signal. The carrier signal is transmitted to the receiver through a noisy channel. The receiver receives a noisy signal and recovers the carrier signal and, hence, the partial response signal from the noisy signal.

Abstract: A method and apparatus for estimating channels in orthogonal frequency division multiplexed (OFDM) communication systems. The method and apparatus allows a channel estimate to be determined independent of having knowledge on channel statistics. Channel estimation is performed by determining and then utilizing a least square (LS) estimate and an interpolation coefficient for each antenna transmitting to the receiver. The interpolation coefficient is determined independently from the statistics of the channel, i.e., without needing the channel multipath power profile (CMPP). The interpolator coefficient is multiplyed by an LS estimate for each transmitting antenna to determine the channel estimate for each channel.

Abstract: A portable, foldable electronic device has an opened use position and a closed use position, and a hinge mechanism for the same. The device is constructed with at least a first housing part with at least an inner wall, a second housing part with at least an inner wall a hinge mechanism is arranged to fold the first and second housing parts relative to each other for a first use position, wherein the inner walls are placed against each other, remaining between the housing parts, and for a second use position, wherein the inner walls and simultaneously the housing parts are placed adjacent to each other. The device also has a third housing part, to which the first and the second housing parts are attached by means of the hinge mechanism in such a way that they are simultaneously folded in relation to the third housing part as well, when the device is opened and closed.

Abstract: A method and an arrangement are provided for generating an estimate of the impulse response of a radio channel. There is generated (202, 406) an initial estimate of the impulse response of a radio channel, and a signal is equalized (203, 407) by using the initial estimate. The equalized signal is decoded (205, 409). There is obtained (411) feedback information from the signal (306) after equalization, an updated channel estimate is generated (304 412) by using said feedback information, and the signal is equalized (407) again by using said updated channel estimate and said feedback information.

Abstract: A vibrator mechanism is constructed with a permanently magnetized rotor having an eccentrically positioned center of mass and a flat profile. The magnetized rotor is magnetically coupled to a electrically commutated stator having multiple windings. The vibrator mechanism is assembled for compact mounting within the housing of a communication device.

Abstract: A portable electronic device (MS) has a user interface (DPL1) that is protected by a motorized slide (SL1). The device has a first slide (SL1) which is moveable between positions in which it protects and exposes the user interface (DPL1). The slide is driven by an epicyclical gear which is, in turn, driven by an electrical motor. The epicyclical gear gears down a rotational speed provided by the motor into a rotational speed that is suitable for driving the slide.

Abstract: A method and system for encoding an image for providing encoded data for transmission or storage. After the image is decomposed by a transform into sub-bands containing blocks or samples of transformed image data organized in a number of bit-planes, it is adjusted to reduce the number of bit-planes prior to being encoded by a bit-plane coder into encoded data. The reduction of the bit-planes is based on the compression factor of the encoding process, the transmission target bit-rate, the type of sub-band and the resolution level of the transformed image data.

Abstract: Switching mode power amplifiers using pulse width modulation (PWM) and pulse position modulation (PPM) for generating bandpass signals is disclosed. Fully digital implemented transmitter structures having QPSK inputs for phase and amplitude are described.