Nokia Corporation

Nokia Technologies Oy

Renesas Mobile Corporation

Amosmet Investments LLC

Other

Broadcom Corporation

Nokia Solutions and Networks Oy

Nokia Mobile Phones Limited

Vringo Infrastructure Inc.

Kaj Tapio Jansen

Mieszko Chmiel

Ülo Parts

Sari K Korpela

Przemyslaw J Czerepinski

Anders Ostergaard Nielsen

Lauri Ilmari Harju

Janne Koivisto

Tero Henttonen

Gilles Charbit

Sari Nielsen

Oscar Salonaho

Timo E Roman

Jussi Olavi Numminen

Harri Lilja

Tapio Kuiri

Kaisu Iisakkila

Sami Haapoja

Markku Johannes Heikkilä

Kjell Ostman

Juha Heiskala

Ilkka Niva

Zoltan Safar

Anders Nielsen

Anders Østergaard Nielsen

Chris Callender

Kaisu Ilsakkila

Lene Duus Bache

Richard Williams

Ville Antero Eskelinen

Przemyslaw Jan Czerepinski

Sari Korpela

In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.

Apparatus, methods, and computer program products providing an indication of cyclic prefix length

In a method for use by a user equipment of a communication network system, a signal strength received from a target signal which is transmitted from an access network of the communication network system, is measured at a frequency of a reception filter of the user equipment, the frequency corresponding to a frequency channel number. The signal strength measured is compared with a predetermined threshold. In case the signal strength measured is below the predetermined threshold, the frequency channel number is incremented by S, S being an integer equal to or greater than 2.

Synchronization

A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal.

Multipoint data transmission

A mobile node, method, apparatus and system for neighbor cell identification and measurements in a wireless network. A first synchronization signal is provided a first base station, wherein the received first synchronization signal is on a predetermined frequency of a transmission bandwidth. Initial synchronization is performed. A second synchronization signal is provided, wherein the second synchronization signal is outside of the predetermined frequency of the transmission bandwidth. Neighbor cell identification based on the received second synchronization signal.

Dedicated synchronization signal for OFDMA system

A communications network and method thereof include a base station controller configured to provide a repetition period of a primary synchronization channel to be equal to a predetermined integer value times a scrambling code length of the scrambling code of a common pilot channel. A user equipment in the network is configured to search for a known sequence comprising the primary synchronization channel to select a cell and a corresponding sub-frame/symbol timing from the selected cell.

Pilot scrambling enabling direct pilot sequence detection in initial acquisition in Evolved UTRA

A user equipment and corresponding method detect a frequency division permanent common pilot and include a controller configured to use a sliding correlator with a frequency division phase-shift, an averaging unit configured to average a peak magnitude output of the sliding correlator over a predetermined number of sub-frames for each of possible reference pilot sequence and each sample shift of the sliding correlator, and a maximum peak storing unit configured to store first and second maximum peaks depending on corresponding ratios and a threshold. The user equipment and method thereof also include a pilot sequence index candidate storing unit configured to store a pilot sequence index candidate for each shift of the sliding correlator. The user equipment and method thereof include a selector configured to select the pilot sequence index candidate with a lowest peak ratio to shift the sliding correlator.

Pilot sequence detection

A method, an apparatus and a computer program product for controlling cell search procedure, including a user equipment determining a change of position in relation to a serving cell; determining the quality of signal received from the serving cell; and stopping the cell search procedure if the change of position is smaller than a first value and the loss of signal quality is lower than a second value.

Control of cell search procedure

The invention teaches a solution, for example, for Long Term Evolution (LTE) networks. The solution comprises determining a measurement pattern for at least one automatic gain control tracking loop when resource restrictions have been configured for a user equipment, the resource restrictions comprising at least one measurement restriction pattern, wherein each automatic gain control tracking loop is associated with at least one measurement restriction pattern; and performing automatic gain control measurements according to the measurement patterns of the at least one automatic gain control tracking loop.

Automatic gain control configuration

Disclosed is a method, operation of a method, and a result of execution of computer program instructions embodied on a non-transitory computer readable memory in a user equipment which performs a first received signal strength indicator scan on a plurality of frequency bands, stores the results of the first received signal strength indicator scan in memory as a plurality of received signal strength indicator values, means for attempting synchronization with a radio access network based upon one or more received signal strength indicator values, in response to failing to obtain synchronization with a radio access network, performing a second received signal strength indicator scan on the plurality of frequency bands. The second received signal strength indicator scan can alternatively be controlled for radio frequency noise.

RSSI scan

A method for selecting a new cell for a station in a cellular telecommunications system, the station being associated with a current cell is provided. The method comprises the steps of measuring at the station the strength of a communication from the current cell, measuring at the station the strength of a communication from at least one other cell, modifying the result of the measuring step in which the strength of the communication from at least one other cell and/or the current cell is measured to take into account a condition of the current and/or said at least one other cell if the measured strength of the communication from the current cell and/or the measured strength of the communication from the at least one other cell satisfy a predetermined condition, if the modifying step is performed, comparing the measured strength of the communication from the current cell and the measured strength of the communication from the at least one other cell at least one of the measured strengths being modified in the modifying step and depending on the results of the comparison changing the current cell with which the station is associated.

Method of selecting a new cell

Pilot scrambling enabling direct pilot sequence detection in initial acquisition in evolved UTRA

A signal detection scheme is provided. According to the provided signal detection scheme, a received signal is correlated in a frequency domain with a reference signal. Additionally, the reception power of the received signal is calculated and the correlation value is normalized with the reception power. Therefore, a single threshold value may be used regardless of the reception power of the received signal when comparing the correlation between the received signal and the reference signal with the threshold value in order to determine whether the received signal is a desired signal or noise.

Signal detection in multicarrier communication system

Growing community of inventors

Salo, Finland

Kaj Tapio Jansen