Nokia Corporation

Nokia Telecommunications Oy

Nokia Mobile Phones Limited

Qualcomm Incorporated

Nokia Technologies Oy

Nokia Siemens Networks Oy

Nokia Networks Oy

Amosmet Investments LLC

Nokia Network Oy

Ari T Hottinen

Jianzhong Zhang

Olav Tirkkonen

Risto Wichman

Antti Anton Toskala

Kiran Kumar Kuchi

Timo Laakso

Zhi-Chun Honkasalo

Jorma Lilleberg

Emanuele Viterbo

Mikko Aleksi Uusitalo

Ilkka Antero Keskitalo

Pekka T Soininen

Harri A Jokinen

Pekka A Ranta

Petri Antero Jolma

Harri Honkasalo

Hannu Hakkinen

Risto Uola

Arto Kiema

Zhichun Honkasalo

Jari Savusalo

Kari Kallioj&auml;rvi

Ingo Kuhn

Oguz Sunay

Ari Karkkainen

Anne Siira

Juha K&auml;rn&auml;

Marko Teittinen

Peter Fertl

Klaus Franz Doppler

Harri Holma

Adrian Boariu

Jarkko Lauri Sakari Kneckt

Nikolai Nefedov

Mikko Tapio Kokkonen

John W Noneman

Markku Kuusela

Lin L Ma

Kari Rikkinen

Hannu H&auml;kkinen

Alex Yao

Yrjo Kaipainen

Mika Laukkanen

Amitav Mukherjee

Tero Ojanper&auml;

Päivi Marjut Ruuska

Jaakko Tapani Peltonen

Jianzhong (Charlie) Zhang

M Oguz Sunay

Joni Kristian Pajarinen

Aimo Tuoriniemi

Cemal Akcaba

Patrick Kuppinger

Helmut Bölcskei

Tiina Heikkinen

Themistoclis Karageorgos

Rodolfo Vadillo

Jussi Kahtava

Manuel Enrique Ramirez Montalvo

Olay Tirkkonen

Americo Correia

Yrjo Kaipanen

Olav Trikkonen

An apparatus for triggering generation of a service period(s) in a network may include a processor and memory storing executable computer program code that cause the apparatus to at least perform operations including triggering generation of at least one service period in a first network based in part on receipt of information from a network device of a second network. The computer program code may further cause the apparatus to enable wake up, based in part on the generated service period, of one or more devices of the first network for communication of content to at least one of the devices during a specified time period of the service period. Corresponding methods and computer program products are also provided.

Facilitating power conservation for local area transmissions

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

A method, apparatus, and computer program for cognitive radio communications are provided. A reference signal is received from a transmitter of a primary system, and the received reference signal is received with an arbitrarily selected beamforming setting. Then, a signal quality metric is calculated from the received and beamformed reference signal. If the signal quality metric indicates that a reception power of the received signal is low, transmission of a data signal to a wireless communication device of a secondary system is scheduled. In the scheduled transmission in the secondary system, the same beamforming setting as was used in the reception of the reference signal is employed.

Avoiding interference in cognitive radio communications

An aspect of the exemplary embodiments of this invention is a method that includes receiving information from a plurality of spatially distributed user devices, where the information includes at least observations of a radio environment of each user device. Based on the received information, the method creates a model of time evolution of a spatio-temporal map for a plurality of spatial locations. The method further includes creating a policy based on the model of time evolution of the spatio-temporal map, and transmitting the policy to the plurality of user devices. A further aspect of exemplary embodiments of this invention is a method that includes generating a probabilistic model based at least on observations of a radio environment of a user device; transmitting the probabilistic model to a network access node of a wireless communication network; receiving information from the network access node; and operating the user device at least in part based on the received information. Also described are apparatus and computer program products that operate in accordance with the methods.

Forecasting of dynamic environmental parameters to optimize operation of a wireless communication system

A method, a device, and a system for duplex communications. Uplink and downlink frequencies are allocated in an orthogonal manner such that at one time instant a certain carrier frequency is used for uplink (downlink) transmission and at some other time instant for downlink (uplink) transmission. Correspondingly, at said one time instant a second carrier frequency is used for downlink (uplink) transmission and at said some other time instant optionally for uplink (downlink) transmission.

Method, a device and a system for duplex communications

An apparatus, method and system configured to allocate communication resources in a communication system. An apparatus includes a processor and memory including computer program code configured to cause the apparatus to arrange a number of sub-channels in a sequence according to an index configured to at least one user equipment. A first segment information is received from a first user equipment to partition the number of sub-channels into first and second user-defined segments. A first segment information is received from a second user equipment to partition the number of sub-channels into first and second user-defined segments. The memory and the computer program code are further configured to, with the processor, cause the apparatus to configure sub-channels dependent on the first user-defined segment to the first user equipment when the first segment information therefrom is lower than the first segment information from the second user equipment.

Apparatus and method to allocate communication resources in a communication system

A method for performing device-to-multidevice communication with interference suppression is provided. The method may include selecting at least one receiving user equipment for D2MD transmission, and receiving requested data rates from the selected at least one receiving user equipment. The method may further include acquiring CSI matrices and identifying interference constraints to the C-UEs sharing the same frequency band as the at least one receiving user equipment. The method then includes determining precoding matrices using the acquired CSI matrices and the identified interference constraints to the C-UEs, and performing D2MD transmission to the at least one receiving user equipment using the determined precoding matrices.

Energy-efficient underlay device-to-multidevice communications with interference suppression

In accordance with aspects of the present invention, a method, apparatus and system for learning antenna weighting factors in a communication system including relay nodes. In one embodiment, an apparatus (e.g., a relay node ()) for use with a communication system includes a first antenna () configured to receive a first signal including a pilot training sequence from a source node () and a second signal including a power-based feedback signal or a signal-to-noise based feedback signal from a destination node (). The apparatus also includes a second antenna () configured to transmit at least a portion of the first signal with an antenna weighting factor (e.g., a perturbed antenna weighting factor). The apparatus further includes an antenna weighting factor module () coupled to the first antenna () and configured to iteratively adjust the antenna weighting factor in response to the second signal.

System for distributed beamforming for a communication system employing relay nodes

The present document discloses a solution for utilizing guard time intervals of another wireless communication system. First, it is detected in a first wireless communication apparatus of a first wireless communication system a guard time interval following a transmission of a second wireless communication apparatus of a second wireless communication system. Thereafter, the first wireless communication apparatus is configured to schedule a transmission in the first wireless communication system to a transmission time interval starting on or after the beginning of the detected guard time interval and ending within the detected guard time interval of the second wireless communication system.

Cognitive radio resource utilization

A data transmission method and system is provided. Symbols to be transmitted are encoded () in a first transceiver into at least two data flows using space-time coding. The data flows are transmitted by means of at least three radiation patterns (to) to a second transceiver (). The radiation patterns (to) transmitting the data flows in the first transceiver are varied.

Data transmission method, and system

A method includes transmitting, from a radio device of a secondary communication system, a signal into a channel of a primary communication system; monitoring channel signal quality-related feedback of the primary system; determining, based on the monitored channel signal quality-related feedback, an amount of mutual coupling between the transmitted signal and the channel, if any, caused by the transmitted signal; and if the amount of determined mutual coupling is less than a threshold amount, using the channel for communication with another radio device of the secondary communication system. The signal that is transmitted may be a probing signal having at least a predetermined temporally varying transmission pattern, and where determining includes correlating at least the predetermined temporally varying transmission pattern with changes, if any, in the monitored channel signal quality-related feedback. The channel signal quality-related feedback that is monitored may include at least one of ACK/NACK feedback, power control feedback, rate control feedback and channel quality indicator feedback.

Determination of coupling between radio devices

The present invention concerns a diversity transmitter, comprising: transmit symbol input means () for inputting a symbol matrix (b) to be forwarded to a transmit processing means (), said transmit processing means comprising supplying means () for supplying columns of said symbol to a plurality of at least two branches, each branch being supplied to a respective one of spatial channels (A, . . . , Am) for transmission to a receiver, a parallelization means () adapted to provide within each branch at least two parallel channels allocated to a respective user, and weighting means () adapted to subject the symbol signals on at least one of said branches to an invertible linear transformation with a fixed complex weight, the complex weight being different for at least two parallel channels. The present invention also concerns a corresponding diversity transmission method.

Diversity transmitter and diversity transmission method

A method includes operating a transmitter connected with ntransmit antennas serving K users having nreceive antennas each; and scheduling which users are to be simultaneously served in a same time-frequency-code slot. A particular user pairing configuration is denoted by &#x3c0; within a set of all configurations &#x3a0;, and scheduling includes expressing mutual information as an additive objective function and maximizing the additive objective function over a particular choice of &#x3c0;&#x3b5;&#x3a0;.

Optimal user pairing for downlink multiuser MIMO

First are determined which relays are available between at least one source and at least one destination, and from them are selected a subset of those relays for an activation interval under a constraint of equal transmit energy per selected relay across the activation interval. A matrix is formed, using CSI received from the relays, to evaluate each effective channel between source and destination that goes through each of the relays, including multi-relay hops, and the relays are selected from that matrix. Utility of source-relay pairing is evaluated in view of the relay-destination channel and the pairing enables relays to multiplex multiple sources where feasible.

Method, apparatus and computer program for relay selection

A system for managing wireless interaction based on communication performance. Source apparatuses may desire to establish wireless links to target apparatuses. Prior to initiating new wireless links, source apparatuses may evaluate whether the establishment of new wireless links will increase the cumulative performance of the wireless communication environment, wherein the wireless communication environment may comprise the apparatuses communicating wirelessly within transmission range of a source apparatus. The evaluation may determine, for example, whether predicted cumulative performance of the wireless communication environment after the new wireless link is initiated would be greater than cumulative performance prior to link initiation.

Channel access for cognitive networks

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Espoo, Finland

Ari T Hottinen