Abstract: A method is provided for avoiding in-device interference. The method may include determining a portion of a frequency band used for data reception by a first wireless modem that may be affected by interference from a data transmission by a second wireless modem. The method may further include causing an indication of the determined portion of the frequency band to be provided to the first wireless modem. A corresponding apparatus and computer program product are also provided.

Abstract: It is described a method for distributing network characteristic information within a cellular telecommunication network, which includes a first cell including a first base station and a first relay node and a second cell including a second base station. The method includes carrying out an interference measurement by the first relay node, wherein the interference measurement yields a measurement value being indicative for the inter cell interference between the second base station and the first relay node, and forwarding the measurement value from the first relay node to the second base station. Further, it is described a relay node and a base station, which are adapted, in conjunction with each other, to carry out the described distributing method. Furthermore, computer program for controlling the described distributing method is described.

Abstract: The embodiments of the present invention disclose a method and a device for resource configuration. The method includes: determining an extra resource block existing in a wireless resource, where the extra resource block is a resource that cannot be identified by a long term evolution system; configuring transmission power of a resource element in the extra resource block according to a power configuration rule; and sending a signal on the resource element in the extra resource block according to configured transmission power. With the preceding technical solution, an extra resource block can be used for transmitting a signal, so that a resource utilization rate may be improved.

Abstract: The invention relates to a technical field of multiple-antenna transmission in a wireless communication system. Communication of feedback representation of and generating a codebook suitable for precoding of multiple-antenna transmission is disclosed. An example matrix representation of precoding of a first number of antenna ports comprises precoding sub-matrices of less antenna ports.

Abstract: The present invention provides a user equipment and channel state information feedback method. The channel state information feedback method used in a coordinated multi-point system includes acquiring small-scale channel state information H?=[H?1, H?2, . . . , H?K] between a user equipment and all base stations joining coordination, acquiring large-scale channel state information li(i=1, . . . , K) between the user equipment and each of the base stations joining coordination, acquiring a CQI (CQIi=li?|H?|, i=1, . . .

Abstract: A sensing module determines whether a signal sensed in a wireless channel is noise or is modulated by a remote device and attempts to determine, in response to the signal being modulated, a modulation scheme of the signal. A capacity determination module determines capacities of the wireless channel to transmit data using a plurality of modulation schemes. In response to the modulation scheme of the signal being determinable, the plurality of modulation schemes includes the modulation scheme of the signal. In response to the modulation scheme of the signal being indeterminable, the plurality of modulation schemes includes one or more modulation schemes that the remote device is configured to use to modulate the signal. A transmit module selects a first modulation scheme of the plurality of modulation schemes based on the capacities of the wireless channel and transmits data over the wireless channel using the first modulation scheme.

Abstract: Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.

Abstract: This disclosure involves methods and systems for compensating for imbalanced transmit antenna gains. A transmit controller independently samples the received signal in each chain of a transceiver selectively adjusts the transmit power at each antenna to minimize any indicated imbalance to improve performance at the node receiving the transmission.

Abstract: A PDMA terminal (1000) establishes communication by forming a plurality of spatial paths to another single radio apparatus. A plurality of antennas constituting an array antenna are divided into a plurality of subarrays corresponding to the plurality of spatial paths respectively. An adaptive array processing unit (USP) can perform an adaptive array processing for each of the plurality of subarrays. A memory (MMU) stores in advance information on the number of antennas associated with the number of spatial paths that can be formed by the array antenna. A control unit (CNP) controls a processing to transmit possible multiplicity information to another radio apparatus at a prescribed timing.

Abstract: Embodiments of the present invention disclose a method for controlling terminal signal transmission, and a terminal. A method for controlling terminal signal transmission includes: monitoring a current working mode of a terminal; transmitting a signal according to first transmit power if it is found through monitoring that the terminal is currently in a first working mode, and transmitting the signal according to second transmit power if it is found through monitoring that the terminal is currently in a second working mode, where the first transmit power is greater than the second transmit power. The technical solution of the embodiments of the present invention helps to enable the terminal to obtain as good radio reception and transmission performance as possible at a same radiation absorption index.

Abstract: Disclosed is a method for controlling uplink transmit power in a mobile communication system. A mobile communication includes a first base station and a second base station which are located in two mutually adjacent cells, respectively, at least one base station of the first and second base stations which generate a subframe offset of transmit power (SOTP), and transmits a subframe offset of transmit power generated by at least one base station of the first and second base stations to at least one terminal which belongs to a corresponding cell. Accordingly, it is possible to reduce signaling times for transmit power control, and to accurately control transmit power.

Abstract: In the method, a current channel condition is estimated based at least in part on a previous channel quality indicator and power control information received after the previous channel quality indicator.

Abstract: A method, apparatus, and system for transmitting and controlling uplink diversity signals in a mobile communication device. While in a soft handoff situation, a mobile communications device may receive a phase feedback signal from a non-serving base station. The mobile device may calculate a modified phase parameter based on the phase feedback signal from the non-serving base station in order to minimize interference with the non-serving base station, for example, by calculating a modified value of a phase difference in a direction opposite to the direction desired by the non-serving base station. In some embodiments of the invention, the mobile device may determine whether to calculate the modified phase parameter in a direction opposite to the direction indicated by the phase feedback signal of the non-serving base station based on a comparison of power feedback signals received from the non-serving and serving base stations.

Abstract: A mobile communication device and a method of controlling same, in which the mobile communication device transmits a plurality of transmit diversity signals comprising a first transmit signal and a second transmit signal differing at least by values of a transmit diversity parameter, receives a plurality of feedback signals from at least one base station in response to the plurality of transmit diversity signals; and determines a system delay based on detecting that a number of expected feedback signal patterns among the received plurality of feedback signals exceeds a system delay threshold.

Abstract: A wireless multi-cell communication system and method of controlling the distribution of multimedia broadcast services (MBMS) are disclosed. The system includes at least one network, e.g., a Universal Terrestrial Radio Access Network (UTRAN), which distributes the MBMS to one or more wireless receive/transmit units (WTRUs). In one embodiment, the MBMS are activated and deactivated based on whether periodic cell updates are provided for a particular cell. In another embodiment, MBMS transmission is terminated when receipt of the MBMS are confirmed. In yet another embodiment, the MBMS are segmented to reduce the resources used by the network and/or the WTRUs during MBMS distribution.

Abstract: Methods and apparatus are provided for directing a beam towards a receiving device in the presence of interference. A beam transmitted by a transmission source is received at a receiving device. The received beam is affected by an interference signal from an interfering source. The receiving device computes a covariance matrix that represents a channel estimate associated with the interfering source. The receiving device modifies a predetermined sounding signal based on the covariance matrix for transmission to the transmission source. The receiving device causes the transmission source to estimate an equivalent channel matrix based on the predetermined sounding signal and the modified predetermined sounding signal. The equivalent channel matrix represents the channel estimate associated with the interfering source and a channel estimate associated with the transmission source.

Abstract: According to one exemplary embodiment, a communication apparatus includes: a measurement module which measures reception power of each field; a determination module which determines whether the reception power is within a range; a calculator which calculates a gain using the reception power if the reception power is not within the range; an adjuster which adjusts a field according to one of an initial gain and the calculated gain; a selector which selects a field length according to the number of field adjustments by the adjuster; and a transmitter which transmits information regarding the field length. When the number of the adjustments is lower than a first threshold value, the selector selects a first value, and when the number of the adjustments is equal to or higher than the first threshold value, the selector selects a second value that is higher than the first value, as the field length.

Abstract: In some examples, a method for power control of control channels in a radio communication system is described. The method may include transmitting, with a first transmission power, first scheduling data in a common search space of a PDCCH. The method may also include transmitting, with a second transmission power, second scheduling data in a specific search space of the PDCCH.

Abstract: A method, apparatus, and system for efficiently reporting Power Headroom (PH) for optimizing uplink coverage are provided. A method in which user equipment reports power headroom in a mobile communication system includes receiving Power Headroom Report (PHR) configuration information including a PH threshold value from a first base station, determining whether to perform a PHR trigger by comparing the PH value, which indicates the available transmission power of the user equipment, with the PH threshold value, and, when the PH value is less than the PH threshold value, transmitting, to the first base station, PHR-related report information including information corresponding to an influence caused by the scheduling of the first base station.

Abstract: A first plurality of characteristics are received from a first client device relating to transmissions received by the first client device from both an access point and a second client device. A second plurality of characteristics are received from the second client device relating to transmissions received by the second client device from both the access point and the first client device. The first plurality of characteristics and the second plurality of characteristics are both assessed. Based on the assessment, a least one of a plurality of customized power levels is selected for transmissions by the access point to the first client device and the second client device.

Abstract: A mobile apparatus, a base station, a direct communication system and a power control method thereof are provided. The direct communication system includes the mobile apparatus and the base station. The base station transmits a power measurement request message to the mobile apparatus. The mobile apparatus determines a power adjustment reference between the mobile apparatus and another mobile apparatus according to the power measurement request message. One of the mobile apparatus and the base station generates a power adjustment request message according to the power adjustment reference. The mobile apparatus adjusts a communication power with the another mobile apparatus according to the power adjustment request message.

Abstract: A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.

Abstract: A method and an arrangement in a radio network node for adapting transmission power of resource elements for demodulation reference signals, referred to as “reference elements” are provided. The radio network node is configured for multiple-input multiple-output transmission, referred to as “MIMO transmission”, to a user equipment. The MIMO transmission comprises at least three layers. Two consecutive subcarriers of a resource block carry at least three reference elements. A first subcarrier of the resource block carries data elements. The radio network node adapts transmission power of said at least three reference elements such that an average transmission power, over said two consecutive subcarriers, of said at least three reference elements is equal to a transmission power, for the first subcarrier, of the data elements for said at least three layers. The radio network node uses the adapted transmission power to transmit, to the user equipment, said at least three reference elements.

Abstract: Techniques for improving reliability of control information are described. A transmitter determines if improved reliability is applicable for at least one control symbol to be sent in a timeslot. The transmitter sends the control symbol(s) without improved reliability if deemed not applicable and with improved reliability if deemed applicable. A receiver receives the control symbol(s) and identifies each received control symbol as a reliable control symbol or an unreliable control symbol based on the received signal quality of the received control symbol and a threshold. The receiver adjusts a control loop based on reliable control symbols. The receiver also combines unreliable control symbols to obtain combined symbols and selectively adjusts the control loop based on the combined symbols. The control loop may be for transmit power or timing.

Abstract: The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention, is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity.

Abstract: Systems and methodologies are described that effectuate or facilitate multichannel feedback in multichannel wireless communication environments. In accordance with various aspects set forth herein, systems and/or methods are provided that construct a carrier set, classifies a carrier as belonging to the carrier set, utilizes the carrier as representative of all carriers included in the carrier set to measure a channel quality of the carrier, and transmits a CQI based at least in part of the channel quality of the carrier, wherein the broadcast CQI is representative of all carriers included in the carrier set.

Abstract: A system and method are provided for boosting power for a communications link between a base station and a user device, or user equipment, over a communications link channel in a cellular communications network. In one embodiment, the base station determines whether a communications link for a user device located within a sector of a cell served by the base station needs a power boost. If a power boost is needed, the base station provides a power boost for the communications link for the user device and, for each of one or more neighboring sectors that neighbor the sector in which the user device is located, coordinates the power boost in both frequency and time with a power backoff for a downlink to another user device located in a cell center area of the neighboring sector.

Abstract: For interference control, a sector m estimates interference observed from terminals in neighbor sectors and obtains an interference estimate. Sector m may generate an over-the-air (OTA) other-sector interference (OSI) report and/or an inter-sector (IS) OSI report based on the interference estimate. Sector m may broadcast the OTA OSI report to the terminals in the neighbor sectors. These terminals may adjust their transmit powers based on the OTA OSI report. Sector m may send the IS OSI report to the neighbor sectors, receive IS OSI reports from the neighbor sectors, and regulate data transmissions for terminals in sector m based on the received IS OSI reports. Sector m may control admission of terminals to sector m, de-assign admitted terminals, schedule terminals in sector m in a manner to reduce interference to the neighbor sectors, and/or assign the terminals in sector m with traffic channels that cause less interference to the neighbor sectors.

Abstract: A user equipment (UE) is configured for carrier aggregation in a wireless communication system. The UE selects control information to be transmitted in an uplink control channel format in a component carrier of two or more component carriers, where the control information includes information types associated with different information reliability requirements. The UE generates an open-loop power control parameter and/or a closed-loop power control parameter based on the information types. The UE transmits the control information in the uplink control channel format at a power level determined by the open-loop power control parameter and/or the closed-loop power control parameter.

Abstract: Disclosed is an apparatus for reporting transmission power. The apparatus for reporting transmission power includes a transmission power normalization unit, a message generation unit, and a transmission unit. The transmission power normalization unit normalizes a first transmission power at a current Modulation and Coding Scheme (MCS) level into a second transmission power at a reference MCS level, the current MCS level being an MCS level of a burst which is intended to comprise a transmission power report of a terminal. The message generation unit generates a message comprising the transmission power report of the terminal with the second transmission power defined therein. The transmission unit transmits the generated message to a base station.

Abstract: A first radio frequency (RF) power amplifier (PA) stage, a second RF PA stage, and an alpha RF switch are disclosed. The first RF PA stage provides a first RF output signal. During a first alpha mode, the alpha RF switch forwards the first RF output signal to the second RF PA stage, such that the first RF PA stage functions as a driver stage and the second RF PA stage functions as a final stage. However, during one of a group of alpha modes, the alpha RF switch forwards the first RF output signal to provide a corresponding one of a group of alpha transmit signals, such that the first RF PA stage functions as a final stage. Further, the first alpha mode is not one of the group of alpha modes.

Abstract: An adaptive scheme controls the transmission of interference management messages by wireless nodes. For example, the adaptive scheme may be used to determine whether and/or how to transmit resource utilization messages. Such a determination may be based on, for example, comparison of a quality of service threshold with a current quality of service level associated with received data. A quality of service threshold may be adapted based on the effect of previously transmitted resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on the frequency at which the wireless node transmits resource utilization messages. A quality of service threshold for a given wireless node may be adapted based on information received from another wireless node. An adaptation scheme also may depend on the type of traffic received by a given wireless node. A quality of service threshold also may be adapted based on throughput information.

Abstract: An uplink power control technique may include a simplified maximum sector throughput (SMST) and a generalized maximum sector throughput (GMST). The SMST and GMST techniques may be used to determine a maximum sector throughput and cell-edge throughput to enhance the overall efficiency of the communication system. The uplink power control technique may determine the optimal uplink power value without collecting interference over thermal noise and without computing the individual channel losses in each neighboring sector.

Abstract: A base station communicates with a mobile station that receives downlink data from the base station and that transmits uplink data to a second base station. The base station includes a data transmitter configured to transmit the downlink data to the mobile station; and a control information receiver configured to receive from the mobile station through a path passing through the second base station, feedback information concerning the downlink data transmitted by the data transmitter.

Abstract: A method for generating a forbidden channel list for a combined wireless communication station comprises the steps of: obtaining a channel usage report from an access point; performing a channel scan procedure; generating at least one of a channel load report, a noise indicator report, a signal strength indicator report and a packet error rate report according to the results of the channel scan procedure; and generating a forbidden channel list at least according to the generated one of the channel usage report, the channel load report, the noise indicator report, the signal strength to report, and the packet error rate report.

Abstract: A system (10) and method (50) of dynamic allocation of spectrum for a communication device involves receiving (51) a user channel map (UCM) on a control channel that is outside the band of interest. The UCM can include at least boundary location information for one or more channel resources. The method can determine (52) at least an approximate location for the communication device, compare (56) the approximate location with the boundary location information, and determine (57) which channels can avoid co-channel and adjacent channel interference with licensed users and other unlicensed users based on the comparison. The method can relax communication parameters for the one or more channel resources if no licensed user signals are found in the user channel map, and tightening the communication parameters if co-channel, adjacent channel, or other interference generating channel use is found within the user channel map.

Abstract: A method and an apparatus for feeding back channel information in a wireless communication system are provided. The method includes calculating an average Signal to Interference and Noise Ratio (SINR), determining a Modulation and Coding Scheme (MCS) level corresponding to the average SINR, determining an MCS level meeting a predefined condition among MCS levels equal to or less than the determined MCS level, and reporting a channel quality indicator representing the determined MCS level to a base station.

Abstract: Techniques to enhance the performance in a wireless communication system using CQI feedback optimized to support different scenarios. According to one aspect, an access terminal may select a CQI feedback table based on the access terminals capability. According to another aspect, an access point may select a CQI feedback table based on an access terminals capability, system loading and the type of service provided by the access point. An access point which provides services that require high data rates may select a larger CQI feedback table to support the high data rates for access terminals which support the larger CQI feedback table. The same access point may select a smaller CQI feedback table for access terminals which do not have the capability or need for the high data rate services.

Abstract: A wireless communication apparatus is provided that includes a plurality of antennas and at least one receive or transmit circuit. The apparatus further includes a controller configured to: determine one or more performance characteristics associated with a first antenna while the circuit is connected to the first antenna; switch the circuit from the first antenna to a second antenna; determine one or more performance characteristics associated with the second antenna after the switch; compare the performance characteristics associated with the antennas; determine whether to maintain the switch to the second antenna or to switch the circuit back to the first antenna; and determine a duration of time to maintain a connection between the selected antenna and the circuit based, at least, on one or more performance characteristics. Other aspects, embodiments, and features are also claimed and described.

Abstract: In a wireless communications system, a serving base station performs outer and closed power control for an overhead channel and a traffic channel for data, either of which can carry an acknowledgement (Ack) channel and Channel Quality Indicator (CQI) channel on an uplink from User Equipment (UE). In an exemplary aspect, data packet communication is implemented in 3GPP LTE Rel. 8 wherein the uplink has a Single Carrier Frequency Division Multiplex (SC-FDM) uplink waveform. The UE performs open loop power control by a determining transmit power spectral density value by using received energy per symbol for a reference signal.

Abstract: The present invention relates to user equipment (UE) having at least two transmit antennas that are capable of transmitting RF signals to a base station, which selects either an open-loop mode or a closed-loop mode depending on how the RF signals from the UE are changing. In the closed-loop mode, the base station periodically evaluates the RF signals from the UE and selects which of the UE's transmit antennas are to be used. This information is then sent to the UE. If the base station determines that the RF signals from the UE are changing too rapidly for effective control, then the base station selects the open-loop mode, such that the UE selects which of the UE's transmit antennas are to be used.

Abstract: A PDMA terminal (1000) establishes communication by forming a plurality of spatial paths to another single radio apparatus. A plurality of antennas constituting an array antenna are divided into a plurality of subarrays corresponding to the plurality of spatial paths respectively. An adaptive array processing unit (USP) can perform an adaptive array processing for each of the plurality of subarrays. A memory (MMU) stores in advance information on the number of antennas associated with the number of spatial paths that can be formed by the array antenna. A control unit (CNP) controls a processing to transmit possible multiplicity information to another radio apparatus at a prescribed timing.

Abstract: There is provided a method and device for feeding back a pre-coding matrix index of a dual-polarized antenna which has a first antenna array and a second antenna array and is arranged at a base station to which the index of a first pre-coding matrix for the first antenna array, the index of a second pre-coding matrix for the second antenna array and the phase offset between the first pre-coding matrix and the second pre-coding matrix are fed back from a terminal, comprising: computing a distance between the first pre-coding matrix and the second pre-coding matrix; judging whether the distance is larger than a predetermined threshold or not; and assigning less bits to indicate the phase offset if the distance is larger than the predetermined threshold. The method and device according to the present disclosure can effectively advance the feedback accuracy of a system thus improving the bit error rate and throughput of the system.

Abstract: The present invention provides a user equipment for a telecommunications system, the telecommunications system comprising at least a first radio basestation. The user equipment comprises means for controlling a transmission power of the user equipment, such that said transmission power has a first value for a first set of one or more signals sent over a physical channel between the user equipment and the first radio basestation. The first value and said second value are different. In alternative embodiments, the second set of signals are transmitted taking into account information from the serving cell and a neighboring cell, while the first set of signals are transmitted taking into account information from the serving cell only.

Abstract: A device receives information regarding allocation of an enhanced dedicated channel radio network temporary identifier (E-RNTI) to user equipment in a cell forward access channel (Cell_FACH) state, and receives information regarding a state change associated with the user equipment. The device determines that the E-RNTI can be released based on the state change, and provides, to another device, a request to release the E-RNTI in response to the state change and so that the E-RNTI can be used by other user equipment.

Abstract: A radio frequency communication system, method, and device operate in the VHF, UHF, or SHF range, where a controller controls the radio-frequency communication range provided by the VHF, UHF, or SHF radiation.

Abstract: In a cellular radio system the power control status of a mobile station is used in the base stations to generate power control commands. Hereby a radio base station can select a power control method that is optimal for the situation at hand. This is obtained by communicating power control status to base stations or deriving power control status in a radio base station. The radio base station is adapted to select power control method based on the power control status. Thus, a base station can select the most suitable power control improvement method, even during soft handover, thereby making make use of the advantages of different types of power control improvement methods.

Abstract: A user-controlled method for modifying the radiation of a wireless device (1) in one or more volumes used for in-house communications, comprising user-selecting this one or more volumes (10, 10?, 10?, 10??, 10IV) while holding the orientation of this wireless device (1) modifying the intensity of this radiation in one or more directions so as to control the radiation in this user-selected one or more volumes (10, 10?, 10?, 10??, 10IV). The invention allows the user to define volumes or regions where radiation should be modified, e.g. reduced, and one or more temporal intervals in which this radiation should be reduced.

Abstract: The present invention relates to control signaling in wireless communication systems. In particular, the present invention relates to control signaling in MIMO based communication systems. In the method according to the invention control information is transferred from a base station to at least one user equipment, via a plurality of common pilot channels. A set of unique pilot sequences has been pre-defined, and the base station assigns specific pilot sequences from the set of pilot sequences to specific common pilot channels, forming a pilot sequence assignment pattern representing a specific control information. The user equipment, having knowledge of the relations between pilot sequence assignment patterns and control information, interprets the received pilot sequence assignment pattern as specific control information. The method is particularly well suited for broadcast type control information.

Abstract: A mobile communications terminal divides a plurality of multipath signals associated with radio signals transmitted from a plurality of base stations using an S-CCPCH into groups by base station, i.e., by transmit source, maximum-ratio-combines a plurality of multipath signals associated with each same base station which is a transmit source into a composite signal, decodes the composite signal, and selects a composite signal having a good decoded result from among decoded composite signals.