Abstract: A method for communicating with a relay station is disclosed. The method for communicating with a relay station comprises transmitting resource allocation information of downlink traffic and uplink traffic from a base station to the relay; and transmitting the downlink traffic to the relay by encapsulating the downlink traffic in accordance with the resource allocation information and receiving encapsulated uplink traffic from the relay in accordance with the resource allocation information. It is possible to enable efficient communication through a relay using a minimum interface without deterioration of throughput even in the case that a base station does not know detailed attributes of a relay existing in a system. Also, it is possible to coordinate collision through a master relay in case of a system supporting multi-hop relays.

Abstract: The present invention discloses a method for cell sleep/wakeup, and a method and an apparatus for controlling carrier power, wherein the method for controlling carrier power comprises: a SON judging whether a cell of a base station requires sleep and/or wakeup, wherein when the judgment result is that the cell requires sleep, the SON indicates the base station to make the cell to sleep, so that the base station reduces pilot channel power of a carrier of the cell to zero or closes the carrier to make the cell enter an energy-saving state; and when the judgment result is that the cell requires wakeup, the SON indicates the base station to wake up the cell, so that the base station recovers the pilot channel power of the carrier of the cell to an operation state value to make the cell exit the energy-saving state.

Abstract: A method and apparatus reducing overhead usage associated with communications is provided. The method may comprise generating an acknowledgment (ACK) for a successfully received codeword from a group of codewords or a negative acknowledgement (NACK) for a codeword unsuccessfully received from the group of codewords, and populating a response information matrix with a plurality of response information elements, wherein the response information elements are determined as a function of the generated acknowledgement or negative acknowledgements.

Abstract: Two different communication terminals share a broadcast content received through a mobile broadcast service. If a mobile broadcast-sharing mode for sharing a broadcast content with a specific communication terminal is set, a mobile broadcast terminal extracts broadcast video data and broadcast audio data from a mobile broadcast signal being received. The mobile broadcast terminal converts a codec of the broadcast video data and the broadcast audio data into a codec used in video communication, and delivers at least one of the converted broadcast video data and the converted broadcast audio data through video communication formed to the communication terminal.

Abstract: A method and apparatus for estimating a signal-to-interference ratio (SIR) are disclosed. A received signal includes signal energy on multiple basis functions. Desired signal energy in the received signal is transformed onto a first basis function with constant polarity. The desired signal energy is estimated by coherently averaging signal energy on the first basis function. A noise power is estimated by averaging signal energy on each basis function other than the first basis function and accumulating the averaged signal energy from the basis function other than the first basis function and scaling the accumulated signal energy to account for a noise estimate from the first basis function. An SIR is estimated by dividing the desired signal energy by the noise power.

Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein said tuner tunes said antenna based upon said transmit and receive measurements to optimize said antenna in both the receive and transmit bands.

Abstract: A communication device and method are disclosed. Transmitted signals are transmitted from antennas. A beam is formed based on known-received signals by controlling a transmission directionality of the antennas. Transmitted power of the transmitted signals is controlled based on a time interval between a reception time during which the known-received signals are received and a transmission time during which the transmitted signals are transmitted.

Abstract: A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

Abstract: A wireless communication method and apparatus using adaptive transmission polarization control are provided. The wireless communication apparatus includes an orthogonal polarization antenna, a channel state estimator, and a transmission polarization state (TPS) selector. The orthogonal polarization antenna receives at least one reference signal. The channel state estimator estimates a wireless polarization channel on the basis of the reference signal. The TPS selector selects a TPS corresponding to the estimated wireless polarization channel from among a plurality of predefined TPSs, and feeds back the selected TPS information. Accordingly, the wireless communication apparatus feeds back information for polarization control using minimum uplink wireless resources, and maximizes a transmission capacity on the basis of the feedback information.

Abstract: A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M).

Abstract: Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node.

Abstract: A wireless communications system is provided with a first wireless communications and a second wireless communications. The first wireless communications module transmits or receives a first wireless signal in a first frequency band selected from a first frequency range. The second wireless communications module transmits or receives a second wireless signal in a second frequency band selected from a second frequency range, and adjusts a transmission power of the second wireless signal in response to that a frequency offset between the first frequency band and the second frequency band falls within a predetermined range.

Abstract: A closed-loop antenna switching method, a reference signal allocating method, and a feedback signal transmitting method for the same are disclosed. Namely, by transmitting a reference signal via the plurality of transmitting antennas via the antenna switching for reference signal transmission for each prescribed multiple period of an antenna selection period, efficient antenna index information can be fed back. By setting an antenna switching period to a prescribed multiple of an antenna selection period, it is able to prevent power loss and data decoding performance degradation. And, the present invention includes transmitting a sounding reference signal (SRS) for each band selection period via at least one of the plurality of transmitting antennas and transmitting at least one data demodulation reference signal (DMRS) between the band selection periods via an antenna for not transmitting data by reference signal transmission antenna switching.

Abstract: A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M).

Abstract: Various processing options and systems are provided for setting/controlling feedback indicators referred to as “Happy Bits” in a wireless communication network using multiple uplink carriers. In one aspect, a Happy Bit is determined independently for each one of a plurality of uplink carriers based on channel conditions and buffer lengths for the respective carrier. For example, if a UE is transmitting the maximum data allowed by its serving grant for that carrier, the UE has available power to increase the data rate on that carrier, and the TEBS delay is greater than a certain threshold, then the Happy Bit for that carrier may be set to Unhappy to inform the Node B that the UE is capable of transmitting at a higher data rate on that carrier.

Abstract: Systems and methods for decreasing the amount of information sent on a feedback channel are disclosed. Spectral binning and/or a Markov state model may be used to reduce the amount of information sent on the feedback channel.

Abstract: A radio communication system (1) has: a radio terminal (UE); a radio base station (BS1) which transmits radio signals (RS1) to the radio terminal (UE) corresponding to the feedback from the radio terminal (UE); and a radio base station (BS2) which transmits, corresponding to the feedback from the radio terminal (UE), radio signals (RS2) to the radio terminal (UE) at the frequency and time identical to the frequency and time at which the radio signals (RS1) are transmitted. In the case where one transmitting antenna is used for the transmission of the radio signals (RS1) in the radio base station (BS1), the radio terminal (UE) omits the feedback to the radio base station (BS1).

Abstract: A method is disclosed to eliminate inter-cluster interference of user equipment located at the edge of a cluster of cells. The method operates by employing fractional frequency reuse (FFR) principles on clusters or combinations of cells in a wireless neighborhood, in which base stations in the cells coordinate their operations in a scheme known as coordinated multi-point transmission (CoMP). By using the FFR principles to single out edge users of the CoMP cluster, the method mitigates interference and increases throughput for the edge users.

Abstract: A method for power control includes: if a downlink serving Access Point (AP) of a User Equipment (UE) is different from an uplink serving AP of the UE, sending, by a base station, downlink signaling to the UE so that the UE adjusts uplink transmitting power according to the downlink signaling. In addition, the present invention discloses an apparatus and a network device for power control.

Abstract: Systems, devices, and methods for adjusting a transmission power at a femto node are described herein. According to the systems, devices, and methods herein, a measurement of a signal transmitted from a transmitting node may be communicated to the femto node, for example from a user equipment or a neighboring femto node, for use in adjusting the power. The transmitting node may comprise the femto node, a macro node, or a neighboring femto node. In addition, statistics regarding such measurements may be communicated to the femto node for use in adjusting the power. The femto node may also adjust the power based on unsuccessful registration attempts or interference communications received at the femto node.

Abstract: An apparatus includes a detection unit configured to detect that a first power receiving apparatus is in a predetermined range and a second power receiving apparatus is in the predetermined range, a power supply unit configured to supply power to the first and the second power apparatuses if the first and the second power receiving apparatuses are in the predetermined range, an acquisition unit configured to acquire first information and second information, and a control unit configured to select one of the first and the second power receiving apparatuses based on the first and the second information if the first and the second power receiving apparatuses are in the predetermined range, wherein the control unit controls a selected apparatus to perform a predetermined process.

Abstract: A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M).

Abstract: A transceiver utilizes a spatial spreading matrix to distribute two or more encoded spatial data streams to multiple antennas. The spatial spreading matrix satisfies one or more of the following two constraints: (a) the ratio of squared norms of the sum of the components of a row, for different rows of the spatial spreading matrix, is equal to a first constant sequence, and (b) the ratio of squared norms of the sum of a symbol Sl to be transmitted, when the symbol Sl is equal to 1 or ?1, multiplied by each of the components of a row, for different rows of the spatial spreading matrix, is equal to a second constant sequence.

Abstract: A wireless communication device is configured for performing uplink transmission power control. The wireless communication device includes a processor and instructions stored in memory. The wireless communication device performs uplink transmission power control for multiple regulated frequency bands or component carriers. The wireless communication device determines a total transmission power for at least one component carrier and allocates transmission power to at least one antenna.

Abstract: The described aspects relate to systems and methods for power control in wireless communication systems. In particular, the described aspects relate to dynamically providing, based on activities on HSUPA channels, a downlink power control adjustment during a data transmission from a user equipment device to a base station or node B device in a HSUPA communication system. The method determines a Signal-to-Interference Ratio (SIR) target for the Enhanced Transport Channel (E-DCH) based on a transmitter's logic that determines the required power level of the downlink grant control channels. This target can then apply to the final target determined on a plurality of other transport channels for the receiver to adjust the power of its downlink channels.

Abstract: This disclosure describes examples of condition monitoring systems with node devices that can adjust the power level of a radio. Embodiments of the node device can dynamically vary the power level for the radio in response to communication with other node devices. In one example, the node devices measure the strength of a signal received from the other node devices. The node devices can, in response to this value, vary the power level of the radio to optimize power consumption and extend the battery life for the node device.

Abstract: Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.

Abstract: A method for transmitting power headroom information by a terminal in a mobile communication system, in which power headroom information is generated and transmitted if a change in power headroom is greater than or equal to a predetermined threshold and a total amount of data stored in a buffer of the terminal is greater than or equal to an other predetermined threshold.

Abstract: A mobile station stores power-limit data that identifies one or more defined locations and associates each defined location with a respective transmit power limit. The one or more defined locations may, for example, correspond to locations of high-priority signal transmitters, such as transmitters that transmit signals used for public safety communications. In response to a trigger condition, the mobile station determines whether its current location is proximate to any of the one or more defined locations in the power-limit data. The trigger condition may occur when a current transmit power level of the mobile station is greater than or equal to a predetermined threshold value. If the mobile station's current location is proximate to a defined location in the power-limit data, the mobile station controls its transmit power level so that it does not exceed a transmit power limit associated with the defined location.

Abstract: A method for use in a multi-user, multi-input multi-output (MU-MIMO) system includes generating a family of codebooks comprising at least one codebook set, the codebook set comprising a plurality of codebooks organized base on a transmission rank and providing the family of codebooks for use in a multiple description coding (MDC) channel feedback scheme.

Abstract: Aspects of a method and system for best-M CQI feedback together with PMI feedback may include generating a plurality of feedback messages, which may be communicated from a mobile station to a base station, wherein at least one of the generated plurality of feedback messages may be associated with each corresponding selected one of a plurality of Channel Quality Indicator (CQI) reporting units. The at least one of the generated feedback messages may comprise CQI information and Pre-coding Matrix Index (PMI) information, which may both be associated with the selected one of the plurality of CQI reporting units. At least one other of the generated plurality of feedback messages may comprise an aggregate CQI information, which is based on one or more of the plurality of CQI reporting units.

Abstract: Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. This may be done by combining interference information from multiple base stations.

Abstract: A radio transmitting apparatus includes a storage unit configured to store a plurality of weight sequence sets, which are each assigned to a plurality of transmission blocks sectioned by time axes and frequency axes, by associating the plurality of weight sequence sets with the plurality of transmission blocks, a first selecting unit configured to select one transmission block from the plurality of transmission blocks, a second selecting unit configured to select one weight sequence from one weight sequence set assigned to the one transmission block signal, a converting unit configured to convert a data signal by using the one weight sequence to generate a converted signal, and a transmitting unit configured to transmit the converted signal by using the one transmission block.

Abstract: A method for transmitting a CQI in a MIMO system is disclosed. A method for allowing a receiver to feed back a CQI value to a transmitter in a Multiple Input Multiple Output (MIMO) system includes, receiving a transmission (Tx) pilot signal for each Tx antenna from a base station (BS), measuring a first CQI value of a first codeword and a second CQI value of a second codeword on the basis of the pilot signal, and transmitting the first CQI value of the first codeword and the second CQI value of the second codeword to the base station (BS), wherein at least one of the first and second CQI values includes specific information capable of indicating a transmission restriction status of a corresponding codeword.

Abstract: The present invention relates to a method as well as to a computing device (20) for editing a noise-database (13) containing noise information, said noise information being derived from noise signals within an audio stream (19). In order to enhance possibilities to create and utilize context information which emerge from tracking noise signals from an audio stream, for example a telephone call, the above method is characterized by the following steps: A) in a localizing step (14), determining geographical data of the location the noise signals origin from; B) in an analyzing step (15), analyzing the noise signals with reference to the noise content; C) in a linking step, linking the analyzed noise signals to said geographical data to create noise information; D) in a storing step, storing said noise information within said noise-database (13).

Abstract: An apparatus and method for power control of a mobile BS of variable backbone capacity. The method includes determining a link state and capacity of a backbone of the BS, and determining a link state and service capacity between the BS and a mobile communication terminal. The method also includes, if the capacity of the backbone is less than the service capacity, setting the backbone capacity similar to the service capacity by lowering a transmit power of the BS by a predefined value.

Abstract: Techniques for communicating on multiple carriers in a wireless communication network are described. In an aspect, different transmit power levels may be used for different carriers to mitigate interference. A first base station may be assigned one or more carriers among multiple carriers available for communication. A second base station may be assigned one or more carriers not assigned to the first base station. Each base station may communicate on each assigned carrier at a first (e.g., full) transmit power level and may communicate on each unassigned carrier at a second (e.g., lower) transmit power level lower. The first and second base stations may belong in different power classes or support different association types. In another aspect, control information may be sent on a designated carrier to support communication on multiple carriers. In yet another aspect, a base station may broadcast bar information indicating the status of carriers.

Abstract: In a method for controlling transmission of an information signal to a plurality of receive antennas associated with one or more receivers, a steering matrix is developed using a subset of receive antennas, wherein the subset of receive antennas includes less than all of the plurality of receive antennas. Transmission of the information signal via a plurality of transmit antennas is controlled using the steering matrix.

Abstract: The exemplary embodiments describe a method for use in a user equipment (700), a method for use in a radio base station (600); a user equipment (700) and a radio base station (600). According to the exemplary embodiments, the user equipment (700) is configured to decide on application or not of a power reduction and to indicate it decision in a power headroom report intended for transmission to the radio base station (600). The radio base station (600) is configured to receive the power headroom report and based on the indicated information in the received power headroom report, the base station in made aware of an additional or special power backoff (e.g. to fulfill SAR requirements) has been applied and thereby able to distinguish it from normal power backoff or power reduction.

Abstract: Techniques to control shared antenna architectures for multiple co-located radio modules are disclosed. The shared antenna architecture may include a combiner and at least one bypass switch for enabling simultaneous operations or mutually-exclusive operations of multiple transceivers. Dynamic gain control is employed to accommodate different front-end losses associated with a variety of signal paths that are achievable using the switch and combiner. Such dynamic gain control can include selecting from multiple sets of amplifier gain values that are tailored to meet the needs of the particular applications that are active at a particular time. Gain values can be chosen based upon received gain information including characteristics including a desired path loss, an application demand, a radio module type, a path configuration, and a mode of operation. By providing dynamic selection of gain values based on application demands, range and throughput of the transceivers can be attained.

Abstract: An apparatus and method for controlling uplink transmission power in a communication system are provided. In the method, transmission power of an uplink data channel signal is determined according to an Open Loop Power Control (OLPC) scheme and transmission power of an uplink control channel signal is determined according to a Closed Loop Power Control (CLPC) scheme.

Abstract: Reliability of beam selection by pre-coding is improved. A user terminal 52 selects an optimum beam (beam number ‘b’) in the next frame (t+1) based on the channel estimation value of a received pilot signal and transmits a difference value D (=b?a) between a beam number ‘a’ at the current transmission notified by a radio base station 51 and the selected beam number ‘b’ selected to be transmitted at the next transmission to the radio base station 51 as a feedback signal. The radio base station 51 previously stores the beam number ‘a’ notified at the previous transmission and combines the beam number based on the difference value D received as the received feedback signal and the previously notified beam number ‘a’ to restore the beam number ‘b’ desired by the user terminal 52. Pre-coding processing adapted to the beam number ‘b’ is performed and transmission to the user terminal 52 is executed in a state in which a beam of the appropriate beam number ‘b’ is formed.

Abstract: A method and apparatus for controlling a link margin are provided. The method includes: receiving, from a second device, a link margin frame including information about the link margin related to a communication link between a first device and the second device; and performing at least one operation selected from among a change in transmission power, a change in a modulation and coding scheme (MCS), beam forming, and a change of the communication link to another frequency band, based on the received link margin frame.

Abstract: A transmission power control method for controlling a transmission power of an E-AGCH including an absolute transmission rate of uplink user data, which is transmitted from a cell controlled by a radio base station to a mobile station, includes: notifying, from a radio network controller to the radio base station which controls a serving cell, an offset between the transmission power of the E-AGCH and a transmission power of a DPCH, when the mobile station is performing a soft-handover with the serving cell and non-serving cells; determining, at the serving cell to which the offset is notified, the transmission power of the E-AGCH based on the notified offset; and transmitting, at the serving cell, the E-AGCH to the mobile station using the determined transmission power.

Abstract: A method and apparatus for using an antenna selection signal for selecting a transmit diversity parameter, including phase difference and/or power ratio between concurrently transmitting antennas.

Abstract: A system and method in which two base stations—a Primary Base Station (PBS) and a Secondary Base Station (SBS)—are used to accomplish a Virtual 2-antenna Receiver (V2RX) scheme. The PBS may perform the initial transmissions of symbols, but, instead of the PBS, the SBS may handle the subsequent reception of terminal-specific Channel State Information (CSI) and the broadcast of an additional signal. The SBS can be much simpler in design than the PBS, and can be located physically closer to the terminals, requiring less power for the feedback signals (from the terminals) and also for SBS's own broadcast of the additional signal to terminals. The reception and usage of stale CSI using a secondary base station can be important for dense networks with a large number of simple terminals. Because of the rules governing abstracts, this abstract should not be used to construe claims.

Abstract: A method for improving multiple-input multiple-output MIMO downlink transmissions includes obtaining a channel state information CSI report including preferred matrix index PMI for precoding, channel quality index CQI and rank index RI at a base station from user terminals through a channel feedback; applying selectively a signal-to-interference-plus-noise-ratio SINR offset to a SINR of said CSI report; applying selectively a rate matching responsive to SINR offset or the CSI report; and controlling or adjusting the SINR offset.

Abstract: Embodiments of the present invention are directed to methods, apparatuses, and systems for implementing a point-to-point radio architecture in which the isolation needed between the transmitter and receiver may be achieved through the use of separate antennas. One embodiment is directed at a radio head comprising a transmitter configured to operate at a first frequency, a receiver configured to operate at a second frequency, and a processor coupled to both the transmitter and the receiver. The transmitter is further coupled to a first antenna interface coupled to a first antenna configured to transmit signals at the first frequency. The receiver is further coupled to a second antenna interface coupled to a second antenna configured to receive signals at the second frequency.

Abstract: The present invention provides a source node device and a destination node in a data processing system, a data processing system, and a decoding method. The source node device includes: an encoding unit, configured to conduct an encoding processing on collected original data according to a codebook including an encoded numerical value and a sending interval corresponding to the original data so as to encode the original data into encoded data having a corresponding encoded numerical value included in the codebook, and to determine a sending interval corresponding to the encoded data included in the codebook. According to the present invention, sending intervals of different encoded data are determined and distinguished based on sending intervals corresponding to the encoded data included in the codebook, which provides a better performance on channel load, channel access collisions, energy efficiency, consumed resources or lifetime of the data processing system.

Abstract: A method and apparatus for adjusting the transmission power level or transmission data rate between a plurality of stations located within the coverage area of a basic service set (BSS) or in an independent basic service set (IBSS) in a wireless local area network (WLAN). The receiving station extracts a transmission data rate from an incoming signal, determines a signal-to-noise ratio (SNR) for the incoming signal, and then calculates noise margin information based on a difference between the SNR of the incoming signal and a minimum SNRMIN for the extracted data rate. The noise margin is then transmitted back to the original transmitting station and using the noise margin information, the transmit power level and/or the transmission rate of this station may be adjusted accordingly.