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Koivisto, Espoo

Karl O. Koivisto, Espoo FI

Patent application numberDescriptionPublished
20090219900Method, System and Arrangements for Setting Up and Maintaining a WLAN Connection within predictably moving vehicles - Setting up and maintaining wireless communication connections with end user's terminals (09-03-2009

Tommi Koivisto, Espoo FI

Patent application numberDescriptionPublished
20100173640Single User Multiple Input Multiple Output User Equipment - In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and a computer program to perform operations including receiving information descriptive of a type of radio access which a user equipment is acting on, and in response to receiving the information descriptive of a particular type of radio access, transmitting from a multiple transmit antenna user equipment so that the transmission appears, at a receiver, to have been made by a single antenna user equipment, or by a user equipment that supports antenna switching/selection.07-08-2010
20100202311METHOD AND APPARATUS FOR PROVIDING CHANNEL STATE REPORTING - An approach is provided for optimizing the timing scheme for channel state reporting. A platform determines an offset value for each of a plurality of user equipment. The offset value relates to timing between a channel state measurement point and a corresponding point for reporting of the channel state measurement. The platform further initiates signaling of the offset values to the respective user equipment.08-12-2010
20100248708Method, Apparatus and Computer Program Product for Reducing Outage Probability for Mobile Devices - An apparatus for enabling dual mode communication may include a processor. The processor may be configured to receive (09-30-2010
20110086657CELL SEARCH FOR FLEXIBLE SPECTRUM USE - Structure of a multi-carrier flexible spectrum wireless cell is determined from received synchronization or broadcast channels of detected individual carriers. The determined structure is used to select an intended carrier for initial access or cell reselection to the flexible spectrum wireless cell. The structure may have carriers compatible with an earlier version (LTE/Release 04-14-2011
20110092200INTERFERENCE AVOIDANCE ON COMMON CHANNELS IN UNCOORDINATED NETWORK DEPLOYMENTS WITH FLEXIBLE SPECTRUM USE - A network access node selects one chunk of spectrum from a plurality of chunks of spectrum to be a primary chunk for a particular cell; transmits in the primary chunk from a broadcast channel BCH that contains information needed by a terminal to at least perform initial cell access; and uses a synchronization channel SCH to indicate which chunk of the plurality of chunks is the primary chunk. A user equipment receives a SCH in a particular chunk of spectrum; determines from it that one chunk is a primary chunk for a particular cell; tunes its receiver to a BCH in the primary chunk and uses information received on the BCH to obtain initial access to the particular cell. In various embodiments the SCH is only in the primary chunk or the SCH has some indication (e.g., cell ID or relative position of primary chunk) telling which chunk is primary.04-21-2011

Tommi T. Koivisto, Espoo FI

Patent application numberDescriptionPublished
20110038310INITIALIZATION OF REFERENCE SIGNAL SCRAMBLING - A scrambling sequence is initialized using at least a cell identifier and an offset, and a physical downlink control information DCI is sent to a user equipment which indicates the offset. In more particular embodiments a user equipment-specific reference signal UE-RS is scrambled using the initialized scrambling sequence, and the scrambled UE-RS is sent to the UE for demodulating a downlink shared channel (PDSCH). In another exemplary embodiment the generated UE-RS is sent in a pilot part of a subframe transmission associated with the PDSCH and is for demodulating at least a data part of that subframe transmission. In a specific embodiment from the UE side, the UE receives the UE-RS and the DCI which indicates the offset, descrambles the UE-RS using a scrambling sequence that is initialized using a cell identifier and the indicated offset; and demodulates the PDSCH using the de-scrambled UE-RS.02-17-2011
20110085519Spreading Code Allocation - A method includes allocating length-2n spreading codes to reference signals contained on first and second groups of resource elements in a first physical resource block and to copies of the reference signals contained on a selected group from the first or second groups and a third group of resource elements in a second physical resource block. Each length-2n spreading code is determined using a first length-n spreading code allocated to the first group and a second length-n code allocated to the second group, or using whichever one of the first or second length-n spreading codes is allocated to the selected group and a third length-n spreading code allocated to the third group. Symbols for the reference signals and their copies are spread and transmitted on the first and second physical resource blocks.04-14-2011

Tommi Tapani Koivisto, Espoo FI

Patent application numberDescriptionPublished
20080311949Determining a Transmission Window for Transmission Bursts of Broadcast Service - In an embodiment, a method, apparatus and system are provided for determining a transmission window for transmission bursts of broadcast service. In one embodiment, the apparatus includes a link-terminating element configured to receive a multimedia broadcast and multimedia multicast service message from a network control element. The apparatus also includes a processor configured to define a burst transmission window for the multimedia broadcast and multimedia multicast service message. The apparatus also includes a transceiver configured to transmit the multimedia broadcast and multimedia multicast service message within the burst transmission window.12-18-2008
20090323574SYSTEM AND METHOD FOR PROVIDING EFFICIENT CONTROL TRANSMISSION FOR SINGLE FREQUENCY NETWORK-BASED BROADCASTING OR MULTICASTING - A system and method for providing efficient control transmission for single frequency network-based broadcasting and/or multicasting. Various parameters that are needed to decode local single frequency network transmissions are signaled in a channel that is separate from the overlay single frequency network control channel. In various embodiments, this channel is transmitted at the level of a local single frequency network or at an individual cell level. This allows this channel to provide, at any given geographical location, the parameters that are used in the transmission of the particular local single frequency networks in that location.12-31-2009
20100009687SYSTEM AND METHOD FOR ENABLING EFFICIENT MBMS DOWNLINK RADIO RESOURCE RE-USE FOR OTHER DOWNLINK TRAFFIC - A system and method by which individual user equipment items can be informed about subframes re-used or exceptionally used for unicast transmission. In various embodiments, a dedicated indication is transmitted to each item of user equipment. This indication may comprise, for example, a dedicated message transmitted to those user equipment items that will get additional unicast downlink allocations in the re-used subframes. In other embodiments, common broadcast signaling is used to indicate subframe re-use to all items of user equipment. This signaling may be transmitted on a physical downlink control channel (PDCCH) or on a physical downlink shared channel (PDSCH) as a common broadcast message.01-14-2010
20110038344APPARATUS AND METHOD FOR INITIALIZATION AND MAPPING OF REFERENCE SIGNALS IN A COMMUNICATION SYSTEM - An apparatus and method for initialization and mapping of reference signals in a communication system. In one embodiment, the apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a reference signal employable with a plurality of physical resource blocks corresponding to a bandwidth of a communication system, and allocate resource elements of an assigned physical resource block from the plurality of physical resource blocks to a user equipment. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate a dedicated reference signal for the user equipment by allocating elements of the reference signal in accordance with allocated resource elements of the assigned physical resource block.02-17-2011
20110039574APPARATUS AND METHOD FOR POSITIONING A WIRELESS USER EQUIPMENT - In accordance with an example embodiment of the present invention, a method is disclosed that comprises receiving a reference signal from each of at least two target neighbor cells via at least one receiving branch at a user equipment; estimating a timing range based at least on one of a timing advance for a serving cell and an inter-cell distance between the target neighbor cell and the serving cell; computing a reference signal time difference for the received reference signal from the target neighbor cell; and screening the computed reference signal time difference using the estimated timing range.02-17-2011

Patent applications by Tommi Tapani Koivisto, Espoo FI