| Patent application number | Description | Published |
|---|
| 20080205351 | Subcarrier Spacing Identification - A cellular communications system that utilizes OFDM in its radio interface is capable of utilizing either a first subcarrier spacing or a second subcarrier spacing. Which of these is presently in use is indicated by generating a first type of synchronization signal in response to the first subcarrier spacing presently being in use, and generating a second type of synchronization signal in response to the second subcarrier spacing presently being in use. Whichever of the first type of synchronization signal and the second type of synchronization signal was generated is transmitted. To distinguish between the first and second types of synchronization signals, a time domain representation of the second type of synchronization signal includes a plurality of instances of the first type of synchronization signal. | 08-28-2008 |
| 20080212654 | Determinting a Detection Signal in a Spread Spectrum Communications System - Disclosed is a method of generating a detection signal for detecting energy in a spread-spectrum signal, comprising: de-spreading the spread-spectrum signal by applying a predetermined spreading code to obtain a sequence of de-spread signal symbols ( | 09-04-2008 |
| 20080232326 | Method and Apparatus for Reducing Interference in Wireless Communication Networks by Enabling More Opportune Handover - According to the teachings presented herein, wireless communication network interference is reduced by sending handover measurement information from mobile stations in conjunction with sending uplink scheduling requests, and by correspondingly making combined handover and uplink resource scheduling decisions. In this context, the combined decision considers both the handover measurement information and the uplink scheduling request, and determines whether a serving cell grants or denies the request and whether handover from the serving cell to a neighboring cell is or is not initiated for the mobile station. The combined determination provides for timely handover of the mobile station, such as where the mobile station is operating near a cell edge and issues an uplink scheduling request to its currently serving cell. | 09-25-2008 |
| 20080267303 | Synchronization for Chirp Sequences - Methods and apparatus for identifying correct peaks in outputs of matched filters in user equipment for communication systems are provided. A received signal is correlated with a replica of a synchronization signal, thereby producing a correlation output signal. Peaks are detected in the correlation output signal. The peak is tested at a plurality of predetermined locations that are based on properties of the synchronization signal, thereby producing a plurality of peak test signals. The maximum of the peak test signals is determined. | 10-30-2008 |
| 20080280580 | IMAGE COMPENSATION FOR WIRELESS RECEIVER - A receiver ( | 11-13-2008 |
| 20080292036 | Method and Device for Signal Processing | 11-27-2008 |
| 20080304405 | Signal Generating Unit and Signal Receiving Unit - A signal generating unit ( | 12-11-2008 |
| 20080316911 | Simultaneous Cell Group and Cyclic Prefix Detection Method, Apparatus and System - A method, and associated apparatus and system, for simultaneous cell group and cyclic prefix (CP) detection, having the steps of determining primary synchronization signal (P-SyS) timing τ using the P-SyS; based on τ, determine a secondary synchronization signal (S-SyS) timing; placing a single Fast Fourier Transform (FFT) window; FFT processing the signal to obtain the frequency domain S-SyS symbols; equalizing the frequency domain S-SyS signal; phase correcting the S-SyS signal; and detecting the cell group and CP length by the correlation giving maximum energy. | 12-25-2008 |
| 20080316947 | METHOD AND APPARATUS FOR 3G LTE FDD and TDD DETECTION USING REFERENCE SIGNAL CORRELATION - A method and apparatus for use in a wireless communication system to detect frequency division duplex (FDD) or time division duplex (TDD) after the radio timing and cell group ID have been determined from the S-SyS during a cell search, by correlating reference symbols (RSs) and detecting whether the RSs are on resource elements corresponding to FDD or TDD. By correlating the known RS, which is known after the cell ID is detected, to the assumed RS positions for FDD or TDD, the duplex form is detected. | 12-25-2008 |
| 20090034666 | IQ Imbalance Image Suppression - A WCDMA receiver performs baseband suppression of the image signal component caused by IQ imbalance. An IQ imbalance image scaling factor is computed from conventional channel estimates and estimates of the IQ imbalance image channel, the latter computed using a conjugated scrambling sequence as the reference sequence for despreading. An IQ imbalance image estimate is obtained by scaling the complex conjugate of the received signal by the IQ imbalance image scaling factor, and is subtracted from the input signal prior to applying traditional baseband demodulation algorithms. | 02-05-2009 |
| 20090036079 | IQ Imbalance Image Suppression in Presence of Unknown Phase Shift - A wireless communication system receiver compensates a received signal containing an IQ gain imbalance prior to performing frequency correction. The IQ gain imbalance in the signal is estimated after frequency correction, providing an IQ gain imbalance estimate for subsequent IQ gain imbalance compensation. The IQ gain imbalance estimation includes formulating a plurality of hypotheses of phase error between I and Q signal components, and taking as the actual phase error the hypothesis that yields the maximum power ratio between I and Q signal components. The maximum power ratio is differentiated with respect to the IQ imbalance estimate. The IQ gain imbalance estimate is updated as a function of its prior value(s), the maximum power ratio, and the derivative of the maximum power ratio. | 02-05-2009 |
| 20090067355 | Power-Aware Link Adaptation in a Wideband CDMA System - Methods and apparatus are disclosed for reducing mobile terminal energy consumption during data transmissions by allocating link resources and adapting link parameters in an energy-aware manner, based on throughput requirements and prevailing channel conditions. A combination of transmit parameters that includes a transmit channelization scheme and is designed to minimize the total energy consumed during data transmission is selected based on a throughput requirement and one or more channel conditions associated with the data transmission. The channelization scheme includes a number of subchannels to be used and subchannel configuration parameters for each subchannel, such as spreading codes, spreading factors, and subchannel power levels. The combination of transmit parameters may also include a modulation format, coding scheme, and transmit power setting, as well as parameters relating to multiple-antenna transmit schemes. | 03-12-2009 |
| 20090068969 | Power-Aware Selection of Radio Access Technology - Methods and apparatus are disclosed for operating a multi-mode wireless communications device to select a radio access technology (RAT) requiring the lowest energy consumption by the device for a desired operating mode. An exemplary method comprises scanning a plurality of frequency bands to determine a set of available radio access technologies that support the desired operating mode, and evaluating, for each available RAT, RAT-specific system parameters and RAT-specific operating conditions. Based on the evaluation, the RAT requiring the lowest energy consumption by the wireless device for the desired operating mode is selected. | 03-12-2009 |
| 20090069057 | Power-Aware Link Adaptation with Variable Bandwidth Allocation - Methods and apparatus are disclosed for reducing mobile terminal energy consumption during data transmissions by allocating resources and adapting link parameters in an energy-aware manner, based on throughput requirements and prevailing signal propagation conditions. A combination of transmit parameters designed to minimize the total energy consumed during data transmission is selected based on a throughput requirement and a path loss associated with a data transmission by a mobile terminal. The combination of transmit parameters includes a bandwidth allocation and may also include a modulation format, coding scheme, and transmit power setting, as well as parameters relating to multiple-antenna transmit schemes. The bandwidth allocation may correspond to a number of sub-carriers of an OFDM signal, or may correspond to a number of resource blocks in an SC-FDMA signal. | 03-12-2009 |
| 20090075647 | UE Measurement Scheduling Based on Measurement Bandwidth - The method and apparatus described herein uses variable length snapshot periods to determine signal strength measurements. A mobile station determines the measurement bandwidth associated with a base station, and sets the snapshot period based on the measurement bandwidth. The mobile station determines the signal strength of serving and neighboring cells during snapshot periods. Such signal strength measurements may be used to assist and/or direct handover operations. | 03-19-2009 |
| 20090103498 | Adaptive Receiver Method and Apparatus - Receiver resources are allocated based on how subframes are allocated within in a frame between downlink and uplink transmissions and how often the receiver is expected to report feedback information associated with the downlink transmissions. Additional time is available for processing received data blocks if the feedback information derived from those blocks must be reported later than expected due to the unavailability of uplink subframes. According to one embodiment, received signals are processed by receiving transmission configuration information indicating how downlink and uplink subframes are allocated within a frame in the time domain. Based on the transmission configuration information, the receiver determines whether a delay that exceeds a feedback reporting interval assigned to the receiver will occur when reporting feedback information associated with the downlink subframes. Receiver resources are allocated based on whether a delay will occur when reporting the feedback information. | 04-23-2009 |
| 20090116473 | Channel Estimation for Synchronized Cells in a Cellular Communication System - Channel estimation is performed by user equipment operating in a mobile communications system. Estimation involves receiving a signal and analyzing it to detect a signal component from a neighboring cell. Depending on outcome, one or both of the following are determined: whether a power level of the signal component from the neighboring cell exceeds a power threshold level; and whether a difference between timing parameters of the neighboring cell's signal component and that from a serving cell is less than a timing threshold level. If the power level of the neighboring cell's signal component exceeds the power threshold level and the difference between the timing parameters of the signal components from the neighboring cell and that of the serving cell is less than the timing threshold level, then a joint channel estimation process is performed. Otherwise, a single channel estimation process is performed. | 05-07-2009 |
| 20090116568 | Method and Apparatus for Interference Rejection Combining and Detection - A multi-branch OFDM receiver combines diversity signals received over different receiver branches using interference rejection combining. The receiver generates first channel estimates associated with a serving base station, second channel estimates associated with at least one non-serving base station, and a time offset between the serving base station and non-serving base station. The receiver computes a noise covariance matrix based on the second channel estimates and the time offset, and then combines the diversity signals received over different branches using the first channel estimates and the noise covariance matrix. | 05-07-2009 |
| 20090117896 | Distinguishing Between Synchronized and Asynchronous Mobile Communications Networks - A user equipment is operated in a mobile communications system, wherein a network part of the mobile communications system is capable of operating in a synchronized mode or in an asynchronous mode. Operation includes recording timing information about a periodically occurring signal received from a neighboring cell. The recorded timing information is used in a blind detection process that ascertains whether the network part of the mobile communications system is operating in the synchronized mode or in the asynchronous mode by detecting at least whether the periodically occurring signal received from the neighboring cell occurred within a predetermined window of time of a corresponding periodically occurring signal received from a serving cell. The detected operating mode of the network part of the mobile communications system is used for controlling subsequent operation of the user equipment. | 05-07-2009 |
| 20090135748 | Adaptive Scheduling for Half-Duplex Wireless Terminals - Adaptation is introduced into allocation of uplink and downlink subframes in wireless communication systems that support full-duplex and half-duplex mobile terminals, thus reducing interference between mobile terminals. In an exemplary method for allocating uplink and downlink timeslots in a wireless communication system supporting full-duplex and half-duplex mobile terminals, a base station determines that a mobile terminal is capable of only half-duplex operation and allocates one or more uplink subframes and one or more downlink subframes to the first mobile terminal, for each of a plurality of frames, so that none of the allocated uplink subframes overlaps in time with an allocated downlink subframe. The allocation of uplink subframes and downlink subframes is varied between consecutive ones in at least a first series of frames according to a pre-determined pattern. In some embodiments, the method further includes transmitting an allocation message to the first mobile terminal, designating the pre-determined pattern. | 05-28-2009 |
| 20090154577 | Determination of Pre-Coding Matrix Indicators for Spatial Multiplexing in a Mobile Communications System - A pre-coding matrix is determined in an OFDMA, multiple transmit antenna communication system having a number of sub-carriers grouped into a number, M, of resource blocks. This involves determining a frequency selectivity of a channel through which received signals have propagated. A number N of selected resource blocks is then determined as a function of the frequency selectivity the N selected resource blocks being those for which pre-coding matrices will be determined, wherein N| 06-18-2009 | |
| 20090154607 | Method and Apparatus for Blind Decoding - According to the teachings presented herein, a method and apparatus provide a reduced search space for blindly decoding a message included in a signal received at a communication receiver, where the message has an unknown format. Improving blind detection efficiency in this manner offers numerous advantages, including but not limited to lower power consumption through reduced processing overhead, and lower power consumption through expanded sleep opportunities. As a non-limiting example, the communication receiver comprises a mobile station configured for operation according to Long Term Evolution (LTE) standards, as promulgated by the 3GPP for E-UTRA systems, where the mobile station is configured to reduce a search space of DCI message decoding by determining message format likelihoods and blindly decoding a received DCI message based on the message format likelihoods. | 06-18-2009 |
| 20090176490 | Systems and Methods for Automatically Determining the Global Cell Identifier of a Neighboring Cell - The present application discloses systems and methods for automatically adding a unique identifier associated with a cell to a neighbor cell list associated with another cell. In some embodiments, the method includes: selecting a particular mobile terminal from a set of mobile terminals; instructing the particular mobile terminal to obtain and report the unique identifier; receiving from the particular mobile terminal the unique identifier; and adding the unique identifier to the neighbor cell list, wherein the step of selecting the particular mobile terminal from the set of mobile terminals comprises determining which of the mobile terminals in the set appears to have a relatively high probability of obtaining the unique identifier within a certain window of time and selecting that mobile terminal. | 07-09-2009 |
| 20090180402 | Methods and Apparatus for Improved Receiver Performance in Half-Duplex Wireless Terminals - A half-duplex mobile terminal having first and second receiver branches connected, during a receive mode, to respective antennas, is disclosed. One of the antennas is selectively connected to the first receiver branch or to a transmitter circuit. The first antenna is connected to the first receiver branch during a first interval, during which interval data is detected using outputs from both the first and second receiver branches. The first antenna is disconnected from the first receiver branch at the end of the first interval, and, during a second interval immediately following the first interval, data is detected using the output of the second receiver branch. A portion of the incoming transmission that arrives during the transition between the receive mode and transmit mode in a half-duplex transceiver is thus received and detected, improving performance of the half-duplex transceiver. | 07-16-2009 |
| 20090190679 | METHOD FOR DETERMINING SYSTEM INFORMATION, AND DECODER, TERMINAL, AND COMPUTER PROGRAM - A method for a terminal of a cellular telecommunication system for determining system information about a node of a network of the telecommunication system is disclosed. The telecommunication system enables determination of the system information by the terminal from information transmitted from at least one cell operated by the node, where the telecommunication system employs Orthogonal Frequency Division Multiple Access. The method comprises receiving a transmission signal, comprising reference symbols and synchronisation symbols, from a network node of the at least one cell; estimating, for each transmit antenna of the network node, a preliminary channel estimate based on the received reference symbols; and estimating a pre-coding vector, being associated with transmission by at least one transmit antenna of the network node of the at least one cell, for the synchronisation symbols. Corresponding features for computer program, decoder and terminal are also disclosed. | 07-30-2009 |
| 20090197555 | Signal Power Measurement Methods and Apparatus - Methods and apparatus in a receiver for estimating a received power of at least one signal having a pattern known to the receiver, the signal having being transmitted by at least one antenna. A method includes using a first method of measuring the received power based on the pattern, the first method generating a first sequence of first power estimates; determining whether a predetermined first event has occurred; and if the first event has occurred, changing to a second method of measuring the received power, the second method being different from the first method and generating a second sequence of second power estimates. | 08-06-2009 |
| 20090215442 | Alleviating Mobile Device Overload Conditions in a Mobile Communication System - A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received. | 08-27-2009 |
| 20090257517 | WIRELESS COMMUNICATION METHODS AND RECEIVERS FOR RECEIVING AND PROCESSING MULTIPLE COMPONENT CARRIER SIGNALS - A wireless communication system receiver receives and processes a signal comprising at least two component carriers carrying data scheduled to the receiver and having center frequencies spaced apart by at least one component carrier frequency difference. Each component carrier comprises a number of subcarriers spaced apart by a system subcarrier frequency spacing. A common divisor is obtained for the at least one component carrier frequency difference and the system subcarrier frequency spacing. A symbol is received on the subcarriers of the component carriers and downconverted to baseband to produce a baseband symbol. A block of padding values is inserted in the baseband symbol to produce a padded symbol. The length of the block of padding values is such that intermediate subcarriers are inserted to yield a subcarrier frequency spacing for the padded symbol equal to the common divisor. Finally the padded symbol is Fast Fourier Transform, FFT, processed. | 10-15-2009 |
| 20090257533 | SYSTEM AND METHOD OF RECEIVING AND PROCESSING MULTICOMMUNICATION SIGNALS - A receiver receives and front-end processes a plurality of component carrier signals, each carrier spaced apart in frequency. The digitized, baseband component carrier signals are inspected to determine estimates of timing offsets between the carriers. A control unit selects a first component carrier signal having data scheduled to the receiver. If data is scheduled to the receiver on other component carrier signals, the control unit generates timing and frequency offset adjustment control signals to time- and frequency-align each other component carrier signal having relevant data, to the first component carrier signal. All the relevant component carrier signals are then combined, and a single OFDM symbol, spanning all the relevant component carriers, is presented to an FFT for symbol detection. | 10-15-2009 |
| 20090257538 | Methods and Apparatus for Fast Downlink Information of Uplink Out-of-Synchronization - Information systems, detectors, and methods for a communication link, such as the downlink of a cellular telephone system, reduce the problem of uplink transmit power peaks when the uplink is out of synchronization (OoS). One method of indicating that a first link to a communication node is OoS includes the step of including an OoS signal in signals that are sent by the node on a second link. The OoS signal includes at least one data bit transmitted by the node that indicates that the first link is synchronized or OoS. A method of determining that a first link to a communication node is OoS includes the step of detecting an OoS signal in signals that are sent by the node on a second link. The OoS signal includes at least one data bit that indicates that the first link is synchronized or OoS. | 10-15-2009 |
| 20090258628 | Time-Error and Frequency-Error Correction in a Multi-Carrier Wireless Communications System - Methods and apparatus for automatic frequency control in wireless receivers configured to simultaneously receive multiple carrier signals at distinct radio frequencies are disclosed. An exemplary wireless device comprises at least first and second radio front-end circuits configured to receive first and second wireless communication signals transmitted via first and second radio-frequency carriers at distinct first and second radio frequencies, respectively, a control processor configured to designate a master carrier signal and a slave carrier signal from among the received wireless communication signals, and a frequency error estimation circuit configured to estimate a first receiver frequency error using the received master carrier signal. The control processor is further configured to calculate a second receiver frequency error from the first receiver frequency error, for use in compensating one or more receiver processes performed on the slave carrier signal. | 10-15-2009 |
| 20090279480 | Method and Apparatus for Retransmission Scheduling and Control in Multi-Carrier Wireless Communication Networks - In one embodiment, a method of scheduling transmissions for a base station in a multi-carrier wireless communication network comprises scheduling initial transmissions of data packets for one or more users on a first carrier, without reserving scheduling capacity on the first carrier for retransmissions. Doing so increases the scheduled capacity of the first carrier for initial transmissions. The method further includes scheduling retransmissions, as needed, for given ones of the data packets on one or more second carriers. The method allows more traffic to be scheduled on the first carrier, meaning that multi-carrier transmissions are less frequently needed to convey all of the traffic targeted to one or more receivers. Those receivers therefore spend more time operating with a reduced receiver bandwidth (as compared to the bandwidth required for receiving more than one carrier), which reduces operating power. | 11-12-2009 |
| 20090296864 | Synchronization Detection Using Bandwidth and Antenna Configuration - User Equipment in a wireless communication network considers the downlink channel bandwidth in setting out of synchronization (OoS) and in synchronization (IS) thresholds and filter durations. Additionally, the UE may consider transmitter antenna configuration—that is, the number of transmitting antennas in a MIMO system—in setting the OoS and IS thresholds. The UE determines it is OoS when a monitored, filtered, downlink channel quality metric, such as reference symbol SINR, is below the OoS threshold. | 12-03-2009 |
| 20090312008 | Detection of Time Division Duplex Downlink/Uplink Configuration - A user equipment (UE) in a cellular telecommunications system is able to detect the uplink/downlink configuration of a detected neighboring cell by receiving a signal from the neighboring cell. A characteristic of the received signal is detected and used as an indicator in a blind detection process to identify one or more downlink slots in the received signal. Known pilot signals in the identified one or more downlink slots can then be used to obtain a signal power measurement of the received signal. The blind detection process is also capable of detecting whether a slot of a neighboring cell's signal is a downlink unicast slot or a Multicast-Broadcast Single Frequency Network slot. | 12-17-2009 |
| 20090316591 | Method and Apparatus for Generating Channel Quality Estimates - A base station receives channel quality reports from a plurality of mobile terminals. The channel quality reports from the mobile terminals indicate the signal power of the signals received by the mobile terminals from the base station and one or more interference parameters relating to the power of impairment components contributing to the total impairment of the received signal during a first time interval. The base station computes an estimated channel quality indication for a second time interval subsequent to the first time interval based on expected variations in the powers of the impairment components. The estimated channel quality indication for the second time interval is used by the base station to schedule the mobile terminals and to determine the transmission format. | 12-24-2009 |
| 20090316659 | Identifying Multi-Component Carrier Cells - Methods and apparatus for generating and determining multi-component carrier cells, without the use of neighbor-cell lists, are described. Methods for generating and informing a communication system terminal about other component carriers belonging to a certain cell identity (ID), and methods and apparatus for a mobile terminal utilizing extended synchronization information for doing multi-component carrier cell search are described. Also, methods for multi-component carrier measurements and methods of reporting such measurements to a network are described. | 12-24-2009 |
| 20090318090 | Adaptive Signal Power Measurement Methods and Apparatus - Methods and apparatus in a mobile receiver for selecting among methods of estimating a received power of at least one signal. A method includes selecting a first method or a second method of measuring the received power based on a cell timing and a measurement interval. Information is received from a first base station about the measurement interval during which to perform the first method and the second method on a signal transmitted by at least one second base station. The timing of the at least one second base station is determined, and based on the timing of the at least one second base station and the measurement interval, one of the first method and the second method is selected. | 12-24-2009 |
| 20090323629 | Secondary Synchronization Sequences for Cell Group Detection in a Cellular Communications System - Timing parameters and an identity of a particular one of a number of cell groups are indicated in a signal transmitted in a cellular communication system having a radio frame in a physical layer, the radio frame comprising a number of time slots. In a known one of the time slots, a synchronization signal, S | 12-31-2009 |
| 20100002654 | USER CONTROLLED TRANSMIT POWER CONTROL DURING HANDOVER IN A CDMA SYSTEM - A method and device for controlling a mobile user equipment being in radio communication with base stations of a wireless communication system. The transmit power of the user equipment is controlled by the communication system. Immediately before sending an event message by the user equipment, the transmit power is increased by the user equipment, in order to increase the likelihood that the message is properly received by the base station. The message may be a soft handover event message. The transmit power is increased by opening a closed loop power control circuit, which normally controls the transmit power of the user equipment. By opening the closed loop circuit, the user equipment takes over the control of its transmitted power for increase thereof. Following the sending of the message, the user equipment may control the base station to send with increased power by increasing a target signal-to-interference ratio value (SIR | 01-07-2010 |
| 20100004015 | Methods and Devices for Adjustment of Transmission Parameters - Methods and devices in a wireless communication system are provided, in which a first portion and a second portion of signals are transmitted on a physical channel to a first transceiver from a second transceiver. A method for controlling transmission parameters in the wireless communication system comprises the steps of: transmitting an indication indicating that the first and the second receiver processing algorithms are used in the first transceiver to process the first and second portions, respectively, of signals received on the physical channel; receiving the indication at the second transceiver; and adjusting, at the second transceiver in response to the indication, a transmission parameter for at least one of the first and second portions of signals to be transmitted on the physical channel to the first transceiver. The indication could be transmitted from the first transceiver, or it could be determined through evaluations carried out at the second transceiver. | 01-07-2010 |
| 20100016009 | METHOD AND DEVICE FOR POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM - A method for generating a power control command in a transceiver in a wireless communication system, where the method comprises the steps of calculating, at the beginning of a predefined time period, a quality measure reference value, generating, repeatedly during the predefined time period, an estimated quality measure value of a signal received at the transceiver; generating a power control command in dependence of the estimated quality measure value and the quality measure reference value; and generating, a number of times during the predefined time period, a modified quality measure reference value from the quality measure reference value. The step of generating the power control command comprises comparing the estimated quality measure value with the modified quality measure reference value. A power control unit, comprising a quality measure estimator, a calculator, a first controller, a second controller and an inner loop element, is configured to implement the method. | 01-21-2010 |
| 20100022212 | Radio Receiver - A radio receiver adapted to alternatively receive data over a communication channel in a first mode and a second mode. The second mode facilitates reception of data at higher data rates than the first mode. The radio receiver comprises a signal-processing unit and a control unit. The signal processing unit is adapted to determine a quality condition of the communication channel. The control unit is adapted to determine, based on the quality condition, whether the communication channel facilitates operation in the second mode and assess at least one configuration condition, one of the at least one configuration condition being that the communication channel is determined to facilitate operation in the second mode. The control unit is further adapted to configure the radio receiver to operate in the second mode when all of at least one configuration condition are fulfilled or to operate in the first mode otherwise. A method for controlling the radio receiver is also disclosed. | 01-28-2010 |
| 20100056170 | Methods and Apparatus for Improving Cell-Edge Data Throughput in a Wireless Communications System - Methods and apparatus for adaptively transmitting data in a wireless communication network are disclosed, in which channel conditions between a mobile terminal and two or more base stations in an active set are evaluated and used to select a transmission mode from a set of available downlink transmission modes including a non-interference-coordinated point-to-point transmission mode as well as at least one of a multi-cell single-frequency-network transmission mode and an interference-coordinated point-to-point transmission mode. Using the dynamic transmission mode selection described herein, a higher cell-edge throughput in HSDPA systems may be achieved. | 03-04-2010 |
| 20100075665 | RADIO ACCESS TECHNOLOGY SELECTION - A method of operating a wireless communication device may include predicting an application expected to be used based on a user interaction with the wireless communications device, determining a preferred radio access technology (RAT) based on the predicted application, determining whether the wireless communications device is currently utilizing the determined preferred RAT as a current RAT, and performing one of ensuring that the wireless communications device continues to utilize the current RAT when the determined preferred RAT corresponds to the current RAT, or searching for the determined preferred RAT when the current RAT does not correspond to the determined preferred RAT and selecting the determined preferred RAT, based on the searching, when the determined preferred RAT is found. | 03-25-2010 |
| 20100118693 | METHOD AND SYSTEM FOR USING THE SYNCHRONIZATION CHANNEL TO OBTAIN MEASUREMENTS IN A CELLULAR COMMUNICATIONS SYSTEM - A method and apparatus that utilizes the synchronization channel (SCH) by the user equipment (UE) to obtain time synchronization information and to perform cell search. In order to perform the SCH detection, only a correlation between the known SCH signal and the received sequence is needed, hence the FFT is not involved in the synchronization step. Typically the SCH and pilot symbols are transmitted with a constant power which is the same for all base stations. Hence, based on the serving cell (SC) SCH and pilot symbols, the power relation between these signals is estimated and the ratio applied when performing time synchronization to other cells (i.e. correlation the received sequence with the SCH from that particular NC) to estimate the pilot signal strength for the NB cell. | 05-13-2010 |
| 20100120429 | Using Mobility Statistics to Enhance Telecommunications Handover - A method of operating a communications network ( | 05-13-2010 |
| 20100128825 | APPARATUS AND METHOD FOR EFFICIENT INTER RADIO ACCESS TECHNOLOGY OPERATION - An apparatus, and a method performed by the apparatus, including a terminal with a front end receiver and analog filter (AF) operable throughout a bandwidth that is large enough to cover the total bandwidth used by different access technologies that the terminal supports. The terminal is operable to simultaneously extract from the output of a single front end receiver and AF the carrier frequencies and bandwidths of the different access technologies. This permits cell evaluation activity and an ongoing communication session to be conducted simultaneously with different access technologies on different bandwidths within the bandwidth of the analog filter and without interruption of the communication session. | 05-27-2010 |
| 20100135423 | Determining a Frequency Error in a Receiver of a Wireless Communications System - A frequency error of received signals in an OFDM receiver of a wireless communications system is determined. Symbols of a given duration are transmitted as cells on sub-carrier frequencies; and some of the cells are pilot cells modulated with reference information. The method comprises the steps of selecting at least three pilot cells (p | 06-03-2010 |
| 20100177683 | Method and Apparatus for Cell Searching - A cell searching procedure is modified to enable a user terminal to determine whether a detected signal originates in a known cell or a new cell having the same cell identifier as the known cell. When a signal is detected, the user terminal determines the cell identifier and timing of the detected signal. If the cell identifier matches a known cell and the timing is outside the timing window of the known cell, the user terminal compares detected signal with a corresponding received signal received from the known cell having the same cell identifier as the detected signal source. The user terminal determines, based on said comparison, whether the detected signal is from the known cell or a new cell. | 07-15-2010 |
| 20100178912 | Automatic Detection and Correction of Physical Cell Identity Conflicts - A PCID conflict resolution procedure is implemented with the aid of a user terminal that is capable of detecting and reporting PCID conflicts between two neighboring neighbor cells. A base station in a serving cell configures measurement reporting by user terminals within the cell capable of reporting PCID conflicts. Once measurement reporting by one or more user terminals is configured, the base station will receive measurement reports from the capable user terminals. If a capable user terminal detects a PCID conflict, the user terminal will include an indication of the PCID conflict in the measurement report. When the base station receives a measurement report with an indication of a PCID conflict, the base station implements an autonomous PCID conflict resolution to resolve the PCID conflict. | 07-15-2010 |
| 20100202416 | Data Packet Communication Scheduling in a Communication System - A communication device has a plurality of concurrently operating transceiver systems, each operating in a respectively different one of a plurality of communication systems. Operation of the transceiver systems is coordinated by receiving a plurality of requests from different ones of the transceiver systems, each of the requests being a request to access a communication medium for the purpose of transmitting or receiving a data packet. Utilization of an available time period is scheduled by selecting which one or ones of the requests to grant based, at least in part, on how many remaining times out of a maximum number of times each of the transmission systems' data packet is permitted to be retransmitted compared to other requests, on whether the requests are requests to transmit a data packet, and on whether the requests are requests to receive a data packet. | 08-12-2010 |
| 20100208847 | OFDM Receiver for Dispersive Environment - A received OFDM signal is processed to determine a plurality of reference delays, which may include the path delays of a multipath channel. The effective channel estimates corresponding to each reference delay are determined, as is the covariance of the ISI and noise components observed at each delay. Combining weights resulting in maximum post-combining SINR are determined for all subcarriers. A corresponding plurality of FFTs is applied to the incoming sample stream, one at each of the reference delays. The individual subcarriers from each FFT output are then combined using the combining weights. This produces a single FFT output with suppressed ISI, which is used in further processing. | 08-19-2010 |
| 20100216470 | Asymmetric Uplink/Downlink Connections in a Mobile Communication System - A base station reduces interference from user equipment operating in a neighboring cell by monitoring one or more channels of neighboring base stations to receive a signal transmitted by a user equipment that is being served by one of the neighboring base stations, and detecting when a power level of the signal transmitted by the user equipment exceeds a threshold power level. The base station then uses the received signal transmitted by the user equipment to acquire an identifier of the user equipment. The base station then communicates with a network node of the mobile communication system to arrange for it to serve the user equipment itself but in only the uplink direction. The neighboring base station continues to serve the user equipment in the downlink direction in what is now an asymmetrical uplink/downlink connection. | 08-26-2010 |
| 20100226264 | System and Method for Robust Cell Detection - A wireless communication receiver performs robust cell searching, excluding interference due to UL transmissions from other UE, by qualifying the output of a matched filter with a metric indicative of the momentary signal-to-noise ratio (SNR). The momentary SNR metric is derived over the same amount of samples as the length of the matched filter. By discarding filter outputs during low momentary SNR, synchronization interference from UL transmissions is avoided. The momentary SNR metric and filter outputs are efficiently calculated, with only a few states and operations, compared to a conventional tapped delay line filter implementation. A limited list of cell candidates is populated, with information on correlation, timing, cell identity within cell group, and SNR metric for the K strongest candidates with respect to the matched filter correlation values. This list is used for later cell search stages, where a secondary synchronization channel is decoded. | 09-09-2010 |
| 20100240374 | METHOD FOR REDUCING THE RISK OF DROPPED CALLS IN A MOBILE COMMUNICATIONS NETWORK - A method for reducing the risk of dropped calls in a mobile communication network, wherein secondary connection information is sent to a mobile station during an event via a first communication link using a first radio access technology; it is detected when the mobile station makes a new connection on a second communication link specified in the secondary connection information; and packets for the mobile station from the first communication link are rerouted to the second communication link. | 09-23-2010 |
| 20100265968 | Synchronization Time Difference measurements in OFDM Systems - Disclosed herein are methods and devices for determining a received time difference between a first OFDM signal received from a first base station and a second OFDM signal received from a second base station. The methods and apparatus disclosed herein may be applied to 3GPP LTE systems as well as other OFDM-based wireless communication systems. An exemplary method comprises determining a decoding synchronization time for each of the first and second OFDM signals and calculating a time difference between the respective decoding synchronization times. The calculated time difference is transmitted by the mobile terminal to the first base station, the second base station, or both. Methods and apparatus for processing, at a base station, time difference information calculated according to the methods herein and transmitted to the base station by a mobile terminal are also presented. | 10-21-2010 |
| 20100279638 | Adaptive Idle Mode Measurement Methods and Apparatus - Methods and apparatus in a receiver for selecting among methods of estimating a received power of at least one signal based on whether inter-frequency or inter-radio-access-technology received power measurements are needed. A method includes using a first method of measuring the received power based on the pattern to generate a first power estimate based on a first duration of the at least one signal; comparing the first power estimate to a first threshold; and based on the comparing, either using the first method of measuring to generate another first power estimate or using a second method of measuring the received power based on the pattern to generate a second power estimate, the second method being different from the first method and the second power estimate being based on a second duration of the at least one signal, and measuring a received power of at least one signal having a second carrier frequency. | 11-04-2010 |
| 20100284499 | Estimating a Signal-to-Interference Ratio in a Receiver of a Wireless Communications System - A Signal-to-Interference Ratio of a radio channel is estimated in a receiver of a wireless communications system, wherein pilots with reference information are modulated on some sub-carriers in some symbols. At least one parameter for signals received from said first transmitter is detected, and a number (N | 11-11-2010 |
| 20100309797 | Signal Measurements Based on Sync Signals - Methods and apparatus for determining a load estimate in a receiver in an orthogonal frequency division multiplex (OFDM) communication system include detecting at least one OFDM symbol of at least one predetermined synchronization signal; determining a signal strength measure based on the detected at least one synchronization symbol; detecting at least one OFDM symbol nearby to the OFDM symbol of the at least one predetermined synchronization signal; determining a total signal power measure based on the detected at least one nearby OFDM symbol; and determining the load estimate based on the signal strength measure and the total signal power measure. | 12-09-2010 |
| 20100311346 | Communication Device and Method - Methods and devices for detecting a symbol in a radio channel and for cell identification are disclosed. A signal is received from the radio channel and the signal is filtered by a filter being responsive to the symbol thereby establishing a first signal. A second signal dependent on the noise floor of the received signal is established—whereby a time interval expected to include multi-path components being excluded or suppressed. A third signal being the ratio between the first signal and the noise floor is established, and the presence of the symbol is detected by detecting a peak in the third signal. | 12-09-2010 |
| 20100323683 | TELECOMMUNICATIONS METHOD AND APPARATUS FOR FACILITATING POSITIONING MEASUREMENTS - A wireless terminal ( | 12-23-2010 |
| 20100323746 | Method of Transmitting TPC Commands - In a cellular radio system Transmission Power Control (TPC) power offset is set so that it is adjusted for each transmitting radio base station based on available relevant measurements that reflect the quality of the downlink channel carrying the uplink TPC command whereby an improved performance is obtained. The TPC power offset can for example be based on an estimated uplink Dedicated Physical Control CHannel (DPCCH) SINR, the number of TPC “up” and the number of TPC “down” sent by a radio base station and aggregated UE receiver power or UE transmit power over a number N slots. Also a mobile station used in a cellular radio system supporting soft handover may be adapted to apply TPC discarding thresholds based on the number and the quality of simultaneously received TPC commands. The discarding procedure in the mobile station may also be carried out selectively such that TPC commands that are determined to be unreliable are not discarded but selectively discarded based on how reliable they are determined to be. | 12-23-2010 |
| 20100329217 | CHANNEL ESTIMATION USING PRECODED REFERENCE SYMBOLS - A method for a terminal of a cellular telecommunication system, wherein the method comprises receiving a transmission signal, comprising reference symbols and synchronisation symbols, from the network node of the at least one cell; determining at least one pre-coding vector, of which one pre-coding vector being associated with transmission by an at least one transmit antenna of the network node of the at least one cell, for the transmission signal; and estimating, for each of the at least one pre-coding vector, a channel estimate for all sub-carriers of the received transmission signal from the received reference symbols and a reference symbol channel model defined for reference symbols of the transmission signal, and from the synchronisation symbols, the at least one pre-coding vector and a synchronisation symbol channel model defined for synchronisation symbols of the transmission signal. | 12-30-2010 |
| 20110002277 | Signal Reception in Wireless Communication Systems using Automatic Repeat Request Transmissions - A wireless communication transceiver compensates a given received signal for retransmission interference, if (uncompensated) decoding of the given received signals fails. The transceiver estimates the retransmission interference bearing on the given received signal based on hypothesizing that another user (or users) mistakenly transmitted in the same time interval, using some or all of the same channel resources as were allocated to the given received signal. The transceiver may retain information in any given interval, indicating the channel allocations used for those user signals successfully received in that interval. The retained information allows the transceiver to determine, with respect to a given signal received in a current time interval, which other users would be interfering users if they mistakenly retransmitted in the current time interval. The transceiver may target its compensated decoding, which may be iterative, to the most likely and/or most significant ones of the potentially of interfering user(s). | 01-06-2011 |
| 20110002278 | Method and Apparatus for ARQ Control in Wireless Communications - In one or more aspects, the method and apparatus presented herein consider corresponding uplink resource allocations when allocating ARQ signal powers. In particular, in at least one embodiment, more power is allocated to the acknowledgment (“ack”) signal(s) corresponding to user equipment (UE) transmissions that involve larger allocations of uplink resources. For the example context of an LTE network, an eNodeB “boosts” its ack signaling power for acknowledging UE transmissions associated with larger uplink bandwidth allocations. Additionally, or alternatively, the UE is configured to bias its ARQ signal evaluations, to bias its ack/nack decision determinations to favor the ack decision, at least for those acks associated with transmissions that used greater resource allocations. | 01-06-2011 |
| 20110003609 | Power Efficient Data Transmission - Teachings herein schedule a data transmission in a variable bandwidth wireless communication system based on the power efficiency of a mobile node. One or more processing circuits, of the mobile node or a network node, determine the value of a control setting that defines a power efficiency configuration of the mobile node. In one embodiment, for example, the power efficiency configuration indicates the mobile node is configured to operate at the maximum power efficiency attainable without the data rate of the data transmission falling below a minimum data rate required by a quality of service. Regardless, the one or more processing circuits select from different possible bandwidths of the data transmission a bandwidth that supports a given data rate and that, according to a power efficiency model that models power efficiency of the mobile node for the different possible bandwidths, yields a power efficiency comporting with the power efficiency configuration. | 01-06-2011 |
| 20110007658 | Method and Apparatus for Investigating whether a Given Signal is Received in a Given Set of OFDMA Resource Elements - A method for investigating a signal in an OFDMA transmission is disclosed. The method comprises receiving the OFDMA transmission and obtaining a resource grid comprising resource elements of the transmission; determining a set of pairs of the resource elements, wherein the resource elements of the pair are disjoint; for each pair, comparing signals of the resource elements of the pair; determining a statistical test value based on the comparisons; and processing the statistical test value to obtain a desired output about the signal. A computer program for implementing the method, a receiver arrangement adapted to perform such investigation, and a communication apparatus using such receiver arrangement are also disclosed. | 01-13-2011 |
| 20110032908 | METHOD, COMPUTER PROGRAM, RECEIVER, AND APPARATUS FOR DETERMINING A CHANNEL QUALITY INDEX - A method for determining a channel quality index in an OFDM receiver is disclosed. The method comprises receiving signals comprising reference signals from a serving cell and reference signals from neighboring cells; determining signal power of the reference signals from the serving cell and signal power of the reference signals from detected neighboring cells; and determining carrier-to-interference ratio to be the ratio between the signal power of the reference signals from the serving cell and the signal power of the reference signals from the detected neighboring cells. Carrier-to-interference ratio is used for adapting physical layer properties and/or for deciding on handover. A computer program and apparatuses for implementing the method are also disclosed. | 02-10-2011 |
| 20110034168 | CELL SEARCH METHOD FOR MULTI-MODE TELECOMMUNICATION APPARATUS, SUCH APPARATUS, AND COMPUTER PROGRAM FOR IMPLEMENTING THE METHOD - A cell search method for a multi-mode telecommunication apparatus is disclosed. The method comprises receiving signals present in a frequency range; transforming received signals into frequency domain; estimating power spectral density from transformed signals; estimating probability of different communication modes by correlating the estimated power spectral density with power spectral density signatures of said different communication modes; and performing cell search according to estimated most probable communication mode. Such an apparatus and a computer program for performing the method are also disclosed. | 02-10-2011 |
| 20110045790 | Method and Computer Program for Estimating Signal Quality Value, and Signal Quality Estimator, Receiver and Communication Apparatus - A method of estimating a signal quality value in a receiver, the method comprising receiving a plurality of reference symbols; determining error rate for the plurality of received reference symbols; mapping the determined error rate to a signal quality value model; and determining mapped signal quality from the model to be signal quality value estimate. A signal quality estimator, a receiver, a communication apparatus, and a computer program for estimating signal quality are also disclosed. | 02-24-2011 |
| 20110051849 | RADIO-RECEIVER CIRCUIT - A radio-receiver circuit having an analog-to-digital conversion unit. The analog-to-digital conversion unit comprises an analog-to-digital converter (ADC) and a filter operatively connected to an input terminal of the ADC in a receive path of the radio-receiver circuit. The radio-receiver circuit further comprises a control unit adapted to receive control data and determine, based on the control data, a frequency band in which data is to be transmitted to the radio-receiver circuit during a subsequent time interval. Furthermore, the control unit is operative to adapt at least one frequency characteristic of the analog-to-digital conversion unit to the determined frequency band for receiving said data transmitted in said subsequent time interval. | 03-03-2011 |
| 20110059747 | Sensing Wireless Transmissions From a Licensed User of a Licensed Spectral Resource - Sensing wireless transmissions from a licensed user of a licensed spectral resource includes obtaining information indicating a number of adjacent sensors that are concurrently sensing wireless transmissions from the licensed user of the licensed spectral resource. Such information can be obtained from a main node controlling the sensor and its adjacent sensors, or by the sensor itself (e.g., by means of short-range communication equipment targeting any such adjacent sensors). A sensing rate is then determined as a function, at least in part, of the information indicating the number of adjacent sensors that are concurrently sensing wireless transmissions from the licensed user of the licensed spectral resource. Receiver equipment is then periodically operated at the determined sensing rate, wherein the receiver equipment is configured to detect wireless transmissions from the licensed user of the licensed spectral resource. | 03-10-2011 |
| 20110085465 | METHOD AND SYSTEM AND DEVICE FOR IF/IRAT MEASUREMENT ALLOCATION - The current invention relates to a method of searching and/or measuring on cells in a mobile communication device connected to a first cell in a network, the method comprising receiving a number of data-frames and a plurality of idle frames which can be used for cell search and/or measurement and wherein the plurality of idle frames intervenes the number of data-frames; receiving information regarding at least one further cell in said network; and based on the received information, determining for each of the at least one further cell a first part of at least one of said idle frames to search and/or measure on said at least one further cell. Further, the invention further relates to a device and a system. | 04-14-2011 |
| 20110085629 | Methods, Devices and Systems for Processing a Signal in the Presence of Narrowband Interference - A method is disclosed for processing a received signal in the presence of an interference of a first type within the bandwidth of a desired signal of the received signal. The method comprises filtering the received signal using at least a first filter having at least a first filter characteristic to produce a filtered signal wherein the interference of the first type is suppressed. Furthermore, the method comprises determining a desired data stream from the filtered signal, basing the determination at least on the first filter characteristic. A method is also disclosed for processing a signal where the method comprises receiving an indication of whether interference of a first type is present in a frequency interval within the bandwidth of the signal, filtering the signal using at least a first filter having at least a first filter characteristic to produce a filtered signal wherein the filtered signal is suppressed in the frequency interval; and transmitting the filtered signal. Corresponding devices, systems and computer program products are also disclosed. | 04-14-2011 |
| 20110090995 | SIMULTANEOUS CELL GROUP AND CYCLIC PREFIX DETECTION METHOD, APPARATUS AND SYSTEM - A method, and associated apparatus and system, for simultaneous cell group and cyclic prefix (CP) detection, having the steps of determining primary synchronization signal (P-SyS) timing τ using the P-SyS; based on τ, determine a secondary synchronization signal (S-SyS) timing; placing a single Fast Fourier Transform (FFT) window; FFT processing the signal to obtain the frequency domain S-SyS symbols; equalizing the frequency domain S-SyS signal; phase correcting the S-SyS signal; and detecting the cell group and CP length by the correlation giving maximum energy. | 04-21-2011 |
| 20110092242 | Signalling Resource Allocation in a Telecommunications Newtork - The present invention provides a method, a radio base station ( | 04-21-2011 |
| 20110096680 | Method and Apparatus for Channel Quality Derivation - In one aspect, a method and apparatus derive channel quality estimates for given subcarriers in an OFDM signal, based on reference signal (RS) or other known-signal measurements made for another set of subcarriers. In at least one embodiment, a wireless communication apparatus implements a method whereby it is configured for receiving reference information on the first set of subcarriers; generating the first channel quality estimates in the frequency domain, based on the received reference information; computing a power delay profile for the first set of subcarriers; and determining the second channel quality estimates either by extrapolating from the first channel quality estimates or as an average of the first channel quality estimates, depending on a delay spread of the power delay profile. | 04-28-2011 |
| 20110103350 | Handover Measurements in a Mobile Communication System - A cellular communication system has an air interface divided into frames, each consisting of sub-frames at least two of which are synchronization sub-frames. For each cell, different cell-related synchronization signals are transmitted to user equipments (UEs) in different synchronization signal sub-frames. The UE detects cell identities of first and second cells. Weights then control generation of weighted handover measurements made from the first cell's synchronization signals received during synchronization sub-frames, wherein each of the weights is a function of the cell identity of the first cell, the cell identity of the second cell, and which ones of the first and second cells' cell-related synchronization signals are transmitted in the respective one of the plurality of synchronization sub-frames during which the weight is applied. A filtered handover measurement, upon which a handover decision can be made, is generated from the weighted handover measurements. | 05-05-2011 |
| 20110103534 | Frequency Synchronization Methods and Apparatus - Methods and apparatus for have frequency offset estimation and cell search in radio communication systems take into account the time-frequency correlation properties of reference and synchronization signals in such systems. This reduces the probability of misdetection of the physical layer cell ID and frequency offset by accounting for time-frequency ambiguities and evaluating correlation signal peaks in the frequency domain, saving signal processing time and making initial cell search considerably faster. Also, lower-grade and hence cheaper oscillators can be used without causing problems in the user's experience with a receiver, such as a cellular telephone. | 05-05-2011 |
| 20110111785 | TIMING OF COMPONENT CARRIERS IN MULTI-CARRIER WIRELESS NETWORKS - Mechanisms for efficient transmission of large amount of download data from a base station ( | 05-12-2011 |
| 20110124329 | Sensing Wireless Transmissions From a User of a Spectral Resource - Wireless transmissions from a user of a spectral resource are sensed by operating receiver equipment within a user equipment to receive signals within a given bandwidth around a given carrier frequency. If the user equipment is not readily capable of analyzing the received signals to ascertain whether the signature pattern of the user is present in the received signals, then it works cooperatively with a remote unit to analyze the received signals to ascertain whether a signature pattern of the user is present in the received signals. Results of the analysis are reported to a main node. The remote unit can provide software to the user equipment and/or perform at least part of the analysis for the user equipment. | 05-26-2011 |
| 20110128872 | Identifying A Sequence Of Received Signals - A sequence of received signals is identified, by a receiver of signals transmitted via a channel of a wireless communications system, as one of a number of known orthogonal sequences. The sequence of received signals is received; a modified sequence is calculated by replacing some of the received signals by their complex conjugate values; the modified sequence is correlated with each one of the number of known orthogonal sequences to obtain a correlation result for each of the known sequences; and the sequence of received signals is identified as the known sequence having the largest correlation result. When some signals in the received sequence are complex conjugated before being correlated with the known sequences, the correlation sum will increase so that even in case of a considerable frequency error the correlation sum for the correct sequence will be sufficiently large to be distinguished from noise. | 06-02-2011 |
| 20110128925 | DRX FUNCTIONALITY IN MULTI-CARRIER WIRELESS NETWORKS - Mechanisms to provide independent DRX (discontinuous reception) functionalities for individual carriers of a multi-carrier wireless network ( | 06-02-2011 |
| 20110136455 | Signal Processing Device and Method - A processing device ( | 06-09-2011 |
| 20110142009 | ANCHOR CARRIER SELECTION IN MULTI-CARRIER WIRELESS NETWORK - Mechanism to receive control signals transmitted from a base station ( | 06-16-2011 |
| 20110150122 | Method for a Single Radio Aggregated Spectrum Receiver, Computer Program, Receiver, and Terminal - A method for a single radio aggregated spectrum receiver of a terminal arranged to operate in a radio network is disclosed. The method comprises receiving information from a network node of the radio network about frequency properties of an aggregated spectrum to be received; determining information about the aggregated spectrum comprising at least one of presence of blocking interferer(s) interspersed with, and pass bands within the aggregated spectrum; and providing filter(s) based on the determined information about the aggregated spectrum such that desired signals are passed and any blocking interferer(s) are attenuated. Corresponding computer program, receiver and terminal are also disclosed. | 06-23-2011 |
