Nokia Corporation

Nokia Technologies Oy

Nokia Mobile Phones Limited

Nokia Networks Oy

Nokia Telecommunications Oy

Fairspectrum Oy

Risto Wichman

Ari T Hottinen

Jyri Hämäläinen

Antti Anton Toskala

Jyri Kalervo Hamalainen

Pekka T Soininen

Markus Nentwig

Kari Kallioj&auml;rvi

Juha K&auml;rn&auml;

Esa Tapani Tiirola

Olav Tirkkonen

Mikko Säily

Heikki Kokkinen

Kari Juhani Niemelä

Mikko Tapio Kokkonen

Hannu H&auml;kkinen

Arto Kivinen

Rinat Kashaev

Jaakko Ojaniemi

Yan Wang

Alexis Dowhuszko

Mehmet Cagri Ilter

Americo Correia

According to an example aspect of the present invention, there is provided an apparatus configured to determine a first channel definition describing a first wireless communication channel between the apparatus and a second apparatus, the first wireless communication channel being on a first frequency band, determine a second channel definition describing a second wireless communication channel between the apparatus and the second apparatus, the second wireless communication channel being on a second frequency band which has a lower bound at a higher frequency than an upper bound of the first frequency band, and derive an encryption key at least partly based on the second channel definition, and use the encryption key to encrypt information before it is transmitted to the second apparatus over the first wireless communication channel.

Cryptographic process

Disclosed is a method for presenting geographical radio resource usage information in a user interface. The method includes receiving radio resource reservation data including location, time and frequency information stored in an administrative spectrum management system. Furthermore, the method includes selecting at least one area of interest and receiving an input indicating a time period of interest from a user. Moreover, the method includes dividing the at least one area of interest into a plurality of subareas. The method includes calculating for each subarea of the plurality of subareas within the at least one area of interest, a first utilization rate of radio resource over the time period of interest. Furthermore, the method includes defining a color for each subarea based on the calculated first utilization rate. Moreover, the method includes rendering the plurality of subareas with the defined color as a geographical map on the user interface.

Method and system for presenting geographical radio resource usage information in user interface

An apparatus, method and system for reducing discontinuities between waveforms in a communication system. In one embodiment, an apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured, with the processor, to determine an amplitude and set of derivatives at an end point of a first symbol waveform, and determine an amplitude and set of derivatives at a beginning point of a second symbol waveform. The memory and the computer program code are configured, with the processor, to insert a guard period waveform having an amplitude and set of derivatives at a first end to substantially match the amplitude and set of derivatives at the end point of the first symbol waveform and an amplitude and set of derivatives at a second end that substantially matches the amplitude and set of derivatives at the beginning point of the second symbol waveform.

Apparatus and method for reducing discontinuities between waveforms in a communication system

Transmission antenna diversity can be set up on a data transmission connection between a transmitting unit, wherein there are several transmission antenna routes, and a receiving unit. A broadcast signal is transmitted through all transmission antenna routes of the transmitting unit, with the aid of these signals a choice is made in the receiving unit of the optimum transmission antenna route and a message of the choice is transmitted to the transmitting unit, which transmits user data through the transmission antenna route connected for use. The broadcast signal of each transmission antenna route can be shaped by an individual signal shaping method which is different from the others and a transmission antenna route is connected for use based on the received antenna choice message, individually for each receiving unit.

Transmission antenna diversity using individual antenna route signal shaping

In accordance with an example embodiment of the present invention, an apparatus comprises a first multiplier configured to convert a first frequency signal into a second frequency signal based at least in part on a first complex-valued local oscillator signal, a pair of low-pass filters configured to filter the second frequency signal, and a second multiplier configured to convert the filtered second frequency signal into a third frequency signal based at least in part on a second complex-valued local oscillator signal wherein the first frequency signal and the third frequency signal share the same frequency position and the pair of low-pass filters is configured based on an indication of allocated transmitted channels.

Methods and apparatuses for frequency filtering for non-centered component carrier transmission

Influencing the transmission of signals from a transmitting device to a receiving device in a communication system comprising at least one transmitting device and at least one receiving device is disclosed. In a receiving station received transmission signals are processed and a feedback signal to be transmitted to a transmitting device is generated on the basis of the processed signals. Then, transmit weights to be applied to transmission signals are determined in accordance with the feedback signal.

Communication system and method using transmit diversity

The invention is related to a network element, comprising: means for receiving feedback information from the user device; means for creating a first orthogonality measure by using the feedback information; means for creating a second orthogonality measure by comparing transmission resources; means for transmitting information to at least one user device.

Allocation method, network element, module and user device

The present invention relates to a method and a communication system wherein stations communicate on a wireless interface. The method includes the steps of including beam identity information into signals transmitted on multiple beams provided by a first station, receiving at a second station signals transmitted from the first station, and identifying beams via which the second station received signals from the first station based on said identity information. At least one beam for transmission on the wireless interface between the stations is then selected. A station configured for the communication comprises antenna means for receiving signals transmitted from the other station on multiple beams and a controller for identifying beams based on beam identity information associated with signals received from the other station.

Communication on multiple beams between stations

The invention relates to a radio system and a transceiver method. The method comprises the steps of transmitting a signal of at least one type by a transceiver of the first type; receiving a signal by a transceiver of the second type with at least two differently polarized antennas; performing measurements of the received signal to determine its polarization by using the transceiver of the second type; determining the polarization of the transceiver of the first type; adjusting the signal transmitted by the transceiver of the second type in such a way that the polarization of the signal is matched with the polarization used by the transceiver of the first type; transmitting at least two orthogonally polarized, polarization-matched signals by the transceiver of the second type; and receiving the polarization-matched signals by the transceiver of the first type by using at least two antennas of different polarizations.

Transceiver method in a radio system and a radio system

The invention relates to a method and a radio system for transmitting a digital signal. The method comprises the following steps: the transmitter transmits at least a part of the signal via at least two different transmit antenna paths; the transmitter weights the transmit power of the signals to be transmitted via the different transmit antenna paths with respect to one another by means of changeable weighting coefficients determined for each transmit antenna path; the receiver receives the signal.

Method and radio system for digital signal transmission

In mobile communications systems transmission antenna diversity is used e.g. to compensate for fading caused to the signal on the radio path. It is known to make the choice of transmission antenna jointly for all subscriber connections, but it is not hereby possible to offer the optimum transmission antenna to simultaneous connections. The present invention aims at a method for implementing transmission antenna diversity on a data transmission connection, which is set up between a transmitting unit (BS), wherein there are several transmission antenna routes (ANT, ANT, ANT), and a receiving unit (MS, MS). In the method, a broadcast signal is transmitted through all transmission antenna routes (ANT, ANT, ANT) of the transmitting unit, with the aid of these signals a choice is made in the receiving unit (MS, MS) of the optimum transmission antenna route connected for use. According to the invention, the method is characterised in that the broadcast signal of each transmission antenna route is shaped by an individual signal shaping method which is different from the others and a transmission antenna route is connected for use based on the received antenna choice message, individually for each receiving unit.

Transmission antenna diversity

A method for selecting a diversity mode to be applied by a transmitter having two cross-polarized antenna arrays, each representing a diversity branch, comprising the steps of: providing a plurality of diversity mode performance chart look-up tables, mapping a respective individual diversity mode to a respective pair of time correlation value and space correlation value for the two cross-polarized antenna array beams, wherein a respective individual diversity mode is presented by a mapping area, wherein the plurality of performance chart look-up tables is parameterized by an indication of a ratio of received powers from the diversity branches, first selecting one of the performance chart look-up tables dependent on determined ratio of received powers from separate beams, and second selecting one of the individual diversity modes according to the mapping to the determined actual time relation and space correlation values from the first selected performance chart look-up table.

Transmission diversity with two cross-polarised antennas arrays

Apparatus, and an associated method, for space-time encoding data to be communicated upon a communication channel susceptible to fading. Multi-rate data services can be effectuated through appropriate selection of the code rate by which data is encoded. And, the coding of space-time encoded data is facilitated as different permutations of coded data symbols are separate transmitted upon separate communication paths.

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Helsinki, Finland

Risto Wichman