Abstract: A wireless communication includes a base station that configures a set of non-zero power reference signals corresponding to multiple potential transmission points to one or more users equipment UEs and configures at least one zero-power reference signal, with zero transmission power from one or more of the multiple transmission points. The base station transmits configuration information to at least one UE of the one more UEs, wherein the configuration information corresponds to a set of resource elements that are associated with a set of channel state information reference signals and wherein the set of channel state information reference signals include the set of nonzero-power reference signals and the at least one zero-power reference signal. The UE then performs a channel measurement based on one or more non-zero-power reference signals of the set of non-zero-power reference signals and performs an interference measurement based on the at least one zero-power reference signal.

Abstract: Disclosed is an apparatus that includes a plurality of parallel digital signal transmitters that each receive one of a plurality of digital sub-signals wherein each of the plurality of digital signal transmitters is configured to transmit one of the plurality of digital sub-signals that each have about the same bandwidth. The apparatus also includes a combiner coupled to the transmitters and configured to shift some of the plurality of digital sub-signals and to combine the plurality of shifted digital sub-signals into a combined digital signal that has a total bandwidth of that is approximately equal to the sum of the bandwidths of the plurality of digital sub-signals. The total bandwidth comprises a plurality of shifted bandwidths of the plurality of digital sub-signals at about the same offset with respect to each other. The combined digital signal is transmitted over a digital subscriber loop.

Abstract: Systems and methods providing integrated voice and data services utilizing wired cordless access with unlicensed/unregulated connectivity sources and wireless access with licensed/regulated connectivity sources. A single telephone directory number is assigned for use with both a mobile wireless telephone and for use with a cordless wired Internet Protocol (IP) telephone. The mobile wireless telephone operates via a conventional licensed spectrum wireless network, and the IP telephone operates over voice over Internet protocol (VoIP) over a broadband packet data network service. Incoming calls simultaneously ring the user's mobile wireless telephone and IP telephone. The user may be provided a personal voice mailbox that may be accessed from their mobile wireless telephone or from their IP telephone. The user may be provided a single services bill associated with use of both telephones.

Abstract: To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing the overhead of retransmission control signaling. In a case where a retransmission control method is employed in consideration of adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>2/3, two bits are set. In a case where the encoding rate 1/3<R?2/3, one bit is set. On the other hand, in a case where R?1/3, zero bits is set.

Abstract: A system for isolating individual channels in a broadcast signal is provided. The system includes a plurality of multipliers, each having an input and an output. A summer coupled to the outputs of each of the plurality of multipliers is provided to generate an output. A multiplication factor system provides a multiplication factor to each of the multipliers to select a predetermined frequency channel of the input signal.

Abstract: A method of mapping symbols of a physical control format indicator channel (PCFICH) is described. A start position of a resource element to map the symbols for the PCFICH is determined by flooring a value, obtained by multiplying the number of resource blocks by a variable proportional to a symbol index for the PCFICH and then dividing the multiplied result by 2, wherein the resource blocks are transmitted in downlink. The symbols are mapped in the start position. Therefore, a problem of wasting resource elements or not being able to implement mapping can be solved by applying a simple mapping rule while mapping symbols of the PCFICH.

Abstract: Methods and apparatus related to the sharing of wide area network (WAN) downlink bandwidth with peer to peer communication signaling usage are described. A WAN, e.g., cellular, wireless communications device using a base station attachment point, transmits a signal to be used by a peer to peer wireless communications device for controlling its peer to peer transmit power level. The peer to peer wireless communications device receives and measures the strength of the power control signal from the WAN wireless communications device. The measurement information is used by the peer to peer wireless communications device in determining whether or not peer to peer signal transmission is permitted and/or in determining a peer to peer transmission power level. Thus the WAN device is able to manage interference from the peer to peer devices in its vicinity which impacts its recovery of WAN base station downlink signals.

Abstract: A communications device includes a housing and radio frequency (RF) circuitry and a processor carried by the housing and operative with each other. A Near Field Communications (NFC) circuit is carried by the housing and connected to the processor. This circuit is configured to detect an NFC enabled tag using an NFC communications protocol when the device is positioned near the tag. The circuit generates a disable signal to the processor upon detecting the NFC enabled tag. The processor is configured to cause the device to enter a locked, operating mode upon receiving the disable signal and to enter or remain in an unlocked, operating mode if the NFC circuit does not generate a disable signal indicative that the NFC circuit has not detected the NFC enabled tag.

Abstract: Systems and methodologies are described that facilitate transmitting and receiving control data according to hopping patterns where the hopping patterns are defined based in part on bandwidth capabilities of a device transmitting the control data and bandwidth of the network on which the data is being transmitted. In this regard, devices having lower bandwidth capabilities than the network can hop within given frequency blocks reserved for control data assuming the blocks are no greater than the bandwidth of the device. Devices having greater or substantially equal bandwidth capabilities as the network can hop across disparate frequency blocks of the network reserved for control data as the device can handle substantially any hop in frequency. This preserves frequency diversity for control channels in multiple device types regardless of device bandwidth capabilities.

Abstract: The method for transmitting an uplink SRS by an LTE UE comprising steps of: the UE receiving information N indicating SRS transmission; generating an SRS sequence by the UE; and the UE transmitting the SRS in two OFDM symbol in a half-frame or frame if the information N indicates that a period of SRS transmission is 2 ms. With present invention, a format of SRS in LTE FDD and LTE TDD will be the same. Meanwhile, a problem of supporting 2 ms period in the LTE TDD system is solved.

Abstract: The present invention relates a method and apparatus for transmitting/receiving data using multiple codewords in a communication system using SC-FDMA (single carrier frequency division multiple access). A transmitter generates the multiple codewords for user data and transmits the generated multiple codewords. A receiver receives the multiple codewords and sequentially performs decoding and SIC (successive interference cancellation) on the received multiple codewords. Therefore, this structure can minimize a PAPR (peak to average power ratio) and considerably reduces interference between symbols in a frequency selective fading environment.

Abstract: A system for signaling an application when a requested data rate and Quality of Service cannot be achieved using OFDM wireless data transmission, and the application proceeds by either renegotiating QoS and data rate, or waiting until they requested rate and QoS are met.

Abstract: A method for transmitting a band bitmap in a wireless communication system is provided. The method includes selecting at least one selection band from a plurality of bands, the plurality of bands being distributed throughout a whole frequency band, grouping the plurality of bands into a plurality of band groups, setting a primary bitmap for each band group according to whether the selection band is included in each band group and setting a secondary bitmap for bands in each band group, and transmitting the primary bitmap and the secondary bitmap. Radio resources used to transmit a band bitmap can be reduced by decreasing the number of bits of the band bitmap.

Abstract: A method and system for ad-hoc wireless communication using out-of-band control channels is provided. An out-of-band control channel is scanned to discover a wireless station. Channel occupation information is communicated with the discovered station. A communication channel is selected based on the occupation information, and may be used for ad-hoc mode information communication with the discovered station.

Abstract: An IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference, comprising an in-premises base station (IBS) is described. The IBS further comprises an IS-OFDM transceiver for communicating with a plurality of in-premises terminals (ITs) without creating interference outside an in-premises perimeter. Further, a method for operating an IS-OFDM system for ultra-wideband (UWB) wireless communications that suppresses narrow-band interference and provides local area networking services, in-premises distribution of broadcast cable channels and in-premises wireless access and routing to external networks is described, without creating interference outside an in-premises perimeter.

Abstract: An improved encoding and decoding method for the transmission and estimation of multiple simultaneous channels, thereby solving the problem of shortening the time required to measure the attenuation, absorption or distortion of signals passing through a predetermined medium.

Abstract: The present invention relates to method of transmitting and receiving signals and a corresponding apparatus. One aspect of the present invention relates to a method of receiving a signal, which includes interleaving in an appropriate manner for a channel bonding system. The interleaving can allow decoding a user requested service at a random tuner window position.

Abstract: The present invention relates to method of transmitting and receiving signaling and a corresponding apparatus. One aspect of the present invention relates to a method of receiving a signal, which includes a preamble, where a bandwidth of the preamble is identical with a bandwidth of a tuner of a receiver.

Abstract: The present invention relates to a method of transmitting and a method of receiving signals and corresponding apparatus. One aspect of the present invention relates to an efficient L1 signaling method for an efficient transmitter and an efficient receiver using the efficient L1 signaling method for an efficient cable broadcasting.

Abstract: The present invention discloses a radio frequency module supporting multiple carriers, a base station, and a carrier distribution method. The radio frequency module supporting multiple carriers includes a carrier generating apparatus, a carrier distributor, a carrier synthesizer, and at least two transmit channel, where the carrier generating apparatus is connected to the carrier synthesizer, the carrier synthesizer is connected to the transmit channels, and the carrier distributor is separately connected to the carrier synthesizer and the transmit channels.

Abstract: Enhancements are provided for the radio link control (RLC) protocol in wireless communication systems where variable RLC packet data unit (PDU) size is allowed. When flexible RLC PDU sizes are configured by upper layers, radio network controller (RNC)/Node B flow control, RLC flow control, status reporting and polling mechanisms are configured to use byte count based metrics in order to prevent possible buffer underflows in the Node B and buffer overflows in the RNC. The enhancements proposed herein for the RLC apply to both uplink and downlink communications.

Abstract: Communication between a base station with multiple transmission antennas and a mobile station is provided. The base station and the mobile station may recognize or estimate, respectively, a channel between the base station and the mobile station, and update a previous codebook with a new codebook based on a variation of the channel. In this instance, the mobile station may provide feedback information to the base station using the new codebook, and the base station may generate a transmission signal for the mobile station using the new codebook and the feedback information.

Abstract: A cyclic delay diversity (CDD) technique in a multiple-antenna broadband wireless communication system is provided. An apparatus in the multiple-antenna broadband wireless communication system includes: a controller for selecting at least one sub-carrier to which CDD is applied; at least one shifter for shifting a phase of a signal mapped to the at least one selected sub-carrier; and an operator for converting the signal, which is mapped to the at least one selected sub-carrier and whose phase is shifted, and other signals mapped to the remaining sub-carriers into time-domain signals.

Abstract: A user terminal (100, 200, 300, 400), a UE, for a wireless communications system. The UE comprises an antenna unit (130) and a receiver unit (125) for receiving signals on a radio channel within the system. The UE also comprises a sensor (115) for sensing the position of the UE and for generating an output signal indicative of said position. The UE further comprises an evaluation unit (120) which is arranged to measure the UE's communication performance over the channel and to also receive the output signal from the sensor and to generate a first control signal (S1) which indicates if altering the position of at least part of the UE, and thereby the position of the UE's antenna unit (130), will result in an increased communication performance over the channel for the UE.

Abstract: In an OFDM communication system, a mobile station provides a radio access network (RAN) a channel quality metric second order statistic, in one embodiment a signal to noise plus interference power ratio (SINR) second order statistic and in particular an SINR standard deviation and/or variance, along with a mean channel quality metric, that is, a mean SINR. By providing both a mean channel quality metric and a channel quality metric second order statistic, the communication system permits the RAN to create a more accurate fading profile of an associated air interface, and in particular a downlink of the air interface, thereby facilitating an improved scheduling decision over the prior art and assuring that a packet has a higher probability to go through a downlink channel without too many retransmissions.

Abstract: Channel state information (CSI) for a single data stream transmitted via a plurality of antennas is determined in a hardware device. Cophasing angles for the plurality of antennas are determined in the hardware device using the CSI. The cophasing angles are transferred from the hardware device to a controller coupled to the hardware device. When steering vector feedback is to be transmitted, the steering vector feedback is generated in the controller based on the cophasing angles. When explicit CSI feedback is to be transmitted, the explicit CSI feedback is generated in the controller using the cophasing angles.

Abstract: In one embodiment, a method for signal processing is provided that uses an improved inversion to mitigate the imprecision introduced by fast approximate methods for division. An input signal is received and processed to generate a matrix M. The matrix M is inverted to generate an inverted matrix M?1. Matrix M is inverted by (i) decomposing the matrix M into a plurality of first sub-matrices, (ii) generating, based on the first sub-matrices and without any division operations, numerators for a plurality of second sub-matrices of the inverted matrix M?1, (iii) generating, based on the first sub-matrices and without any division operations, denominators for the second sub-matrices, and (iv) generating the second sub-matrices based on the numerators and denominators. The inverted matrix M?1 is processed to generate an output signal. Accordingly, a reduction in noise level from inaccuracy in division is achieved, and computational complexity is reduced.

Abstract: A pilot transmission method in a wireless communication system is provided. The method includes: transmitting a first pilot for channel measurement through a first transmission section; and transmitting a second pilot for channel measurement through a second transmission section which is subsequent in time to the first transmission section, wherein the first transmission section and the second transmission section include a plurality of sub-bands, parts of the plurality of sub-bands use predetermined precoding whereas the remaining sub-bands use non-predetermined precoding, and any one of the first pilot and the second pilot is carried only on a sub-band which uses the predetermined precoding whereas the other pilot is carried on the entirety of the plurality of sub-bands.

Abstract: A technique for adjusting a phase relationship among modulation symbols is disclosed. A method embodiment of this technique comprises the steps of applying to a sequence of modulation symbols a phase ramp that continuously increases over the duration of the symbol sequence, and applying a compensation phase to each modulation symbol to introduce a phase offset between two subsequent modulation symbols. The joint application of the phase ramp and the compensation phase can be used to establish a saw tooth-like phase characteristic over the sequence of modulation symbols. In one embodiment, the phase ramp is applied in the context of impressing a frequency shift on the modulation symbols.

Abstract: A transmitter includes: a data modulation and channel coding unit configured to perform data modulation and channel coding for a data channel with a modulation level and a channel coding rate updated for each transmission time interval; a multiplexing unit configured to multiplex a control channel and the data channel for each transmission time interval; and an adjusting means configured to adjust a length of the transmission time interval. Increasing a unit of information transmission in the time direction and/or the frequency direction depending on communication conditions can reduce a frequency of inserting (allocating) the control channel, and can improve data transmission efficiency.

Abstract: A method and apparatus for transmitting and receiving a common control channel in an Orthogonal Frequency Division Multiplexing (OFDM) mobile communication system. In the transmission apparatus, when a plurality of bursts are transmitted during a Transmission Time Interval (TTI) of the common control channel, an Inverse Fast Fourier Transform (IFFT) mapper generates bursts that are shifted in a frequency domain by applying a predetermined cyclic shift offset between the bursts, and maps the generated bursts in a resource block. A transmission unit transmits the bursts to a receiver. In the reception apparatus, a reception unit receives a burst, and a combining unit combines the received burst with a burst stored in a buffer. A decoder decodes each of the combined bursts, and upon a successful decoding, detects a TTI start timing of the common control channel from the successfully decoded burst.

Abstract: Provided are a preamble structure and a channel estimation algorithm thereof. A communication method for a transmitter for channel estimation in a Multiple Input Multiple Output (MIMO) wireless communication system having N receiving antennas, includes generating a preamble interval having a short training field that includes a predetermined pattern iterated N times on a time domain and is used for compensating for a carrier frequency offset, and transmitting a packet having the preamble interval.

Abstract: A method of allocating resources in a wireless communication system includes allocating a plurality of physical resource blocks, each of which includes a plurality of sub-parts, to a virtual resource block, and mapping the virtual resource block to the plurality of physical resource blocks, wherein the virtual resource block is mapped to the sub-parts located in different positions in the range of each physical resource block. The number of resource elements allocated for the virtual resource block is constantly maintained.

Abstract: A control apparatus of a communication system that uses a plurality of communication paths from a transmission node to a reception node to redundantly transmit data is provided. The apparatus comprises: a setting unit for setting priorities to a plurality of partial data; a calculation unit for calculating the time slot number which is required to transmit the partial data on the communication paths; a selection unit for selecting one or more combinations of the partial data and the communication path. The selection unit selects the one or more combinations in descending order of the priorities of the partial data and selects the one or more combinations in ascending order of the required time slot number if the priorities of the partial data are equal.

Abstract: A method and apparatus of assigning selected interlace mode, the method comprising generating SelectedInterlaceAssignment message comprising SelectedInterlaceAssignment message comprising an 8 bit Message ID field, a 12 bit PilotPN field, a 1 bit SelectedInterlacesEnabled field, a 4 bit NumAssignedInterlaces field, and a 3 bit InterlaceID field, wherein, the PilotPN field is set to a PilotPN of the sector that sends SelectedInterlace Assignment message, the NumAssignedInterlaces field is set to the number of assigned interlaces, the InterlaceID field is set to an interlace assigned to the access terminal for SelectedInterlace operation and transmitting the generated SelectedInterlaceAssignment message over an OFDM communication link.

Abstract: An RF unit receives multicarrier signals via a plurality of antennas. A division unit divides the multicarrier signals received into a plurality of groups in the frequency domain. The division unit acquires the channel quality for each subcarrier, contained in the multicarrier signal, in the frequency domain, and defines the plurality of groups according to the channel quality. The processing unit performs adaptive array signal processing for each of the divided groups.

Abstract: A method for efficiently scheduling virtual resource blocks to physical resource blocks is disclosed. In a wireless mobile communication system that supports a resource block group (RBG) allocation scheme, for distributed mapping of consecutively allocated virtual resource blocks to physical resource blocks, there is proposed a mapping method capable of increasing the number of distributed virtual resource blocks to a maximum while satisfying gap limitations, when the length of the physical resource blocks is different from the length of the distributed virtual resource blocks. Also, the number of distributed virtual resource blocks and the structure of an interleaver are limited for efficient scheduling.

Abstract: A method of data transmission includes determining the number of layers, generating mapping symbols by mapping modulation symbols for a first codeword and modulation symbols for a second codeword to each layer, and transmitting the mapping symbols through a plurality of antennas. At least one of the first codeword and the second codeword is mapped to at least 3 layers and the number of layers is larger than 3.

Abstract: Embodiments of an apparatus, system and method are described for a base station. Notification from a mobile station in a network may be received. A multi-carrier advertisement with a base station multi-carrier configuration may be sent. The base station multi-carrier configuration may include at least one carrier index associated with a carrier frequency operated on by the base station. Other embodiments are described and claimed.

Abstract: Examples are disclosed for transmitting and receiving schemes for multiuser single-carrier space time spreading (STS) with frequency domain equalization.

Abstract: Techniques for transmitting traffic data and control information in a wireless communication system are described. In an aspect, traffic data and control information may be multiplexed at a coded data level. A user equipment (UE) may encode traffic data to obtain coded traffic data, encode control information to obtain coded control data, multiplex the coded traffic data and the coded control data, modulate the multiplexed data, and generate SC-FDMA symbols. In another aspect, traffic data and control information may be multiplexed at a modulation symbol level. The UE may encode and modulate traffic data to obtain data modulation symbols, encode and modulate control information to obtain control modulation symbols, multiplex the data and control modulation symbols, and generate SC-FDMA symbols. The UE may perform rate matching for traffic data to account for control information. The UE may also perform multiplexing and puncturing for different types of control information.

Abstract: The method for controlling signal transmission includes: determining the first reference variable according to the number of transition points from downlink to uplink in a wireless frame of the system and the system frame number (S502); determining the second reference variable according to the number of transition points from downlink to uplink in a wireless frame and the time slot number (S504); determining the third reference variable according to the sub-frame offset of the signal (S506); and determining signal transmission times according to the first reference variable, the second reference variable and the third reference variable, so as to control the signal transmission (S508).

Abstract: Systems and methods are provided herein for interfacing a first multi-media digital device with a second multi-media digital device. An exemplary method includes the steps of: (i) converting a plurality of differential digital content channels from the first multi-media digital device into a plurality of single-ended digital content channels; (ii) transmitting the plurality of single-ended digital content channels from the first multi-media digital device to the second multi-media digital device via one or more coaxial cables; and (iii) receiving the single-ended digital content channels from the one or more coaxial cables and converting the single-ended digital content channels back into a plurality of differential digital content channels that are supplied to the second multi-media digital device.

Abstract: Methods and apparatus for determining and selecting digital coding and/or decoding technology, delivery bitrates, and resolution parameters for programming and data delivery over, e.g., a content-based network. In one embodiment, the network comprises an HFC cable or satellite network that includes a server process interfacing with a plurality of customer premises equipment (CPE), and/or associated client devices, each having different display resolution, bitrate, and/or decoding capabilities profiles. The server determines the one or more capabilities possessed by the CPE or client device, and evaluates one or more program or content choices for possible delivery to that CPE or device based on its profile. The selection process may also take into consideration network and/or CPE operational considerations, such as conservation of downstream bandwidth, CPE uprating capability, client device power consumption, and the like.

Abstract: The present invention relates to a method for selecting operating frequency channels having frequency parameters, such as a frequency interval or at least one carrier frequency, for a network communicating data over a shared medium. The network is configured to communicate within a frequency range, and the frequency range is divided into a plurality of frequency channels f1-fn, each frequency channel defines a predetermined frequency parameter. The data to be communicated over the network is divided into sequences FS, each sequence having a plurality of positions SP1-SPm. The method further comprises regularly scanning the frequency range to identify interfering frequencies generated by interfering networks operating within said shared medium, and assigning a frequency channel fk to each position SPi within the sequences FS based on the identified interfering frequencies, whereby the use of interfering frequencies is limited.

Abstract: The present invention relates to a method for minimizing means square estimation error (MSEE) and bit error rate during channel estimation and equalization between a transmitter and a receiver of an orthogonal frequency division multiplexing (OFDM) systems. The method comprises transmitting from said transmitter to said receiver a training sequence for channel estimation being superimposed onto data at specific pilot to data power ratio (PDPR), receiving the OFDM signals along with the training sequence as an input, cross-correlating said received signal to a specific lag determined by the rms delay spread of the channel, with a specific known training sequence stored in a register, and which is also the sequence that is added to the data at the transmitter in the time domain having a prescribed pilot to data power ratio.

Abstract: A method for uplink transmitting control information in a mobile communication system is disclosed. A method for uplink transmitting control information in a mobile communication system includes receiving control channel configuration information for indicating a first period about a time interval in which a control channel is repeatedly allocated and a second period about a time interval in which the control channel is repeatedly allocated in accordance with the first period, generating a control channel at a predetermined position in a time-frequency resource region for uplink transmission in consideration of the first period and the second period, and transmitting control information through the generated control channel.

Abstract: Synchronization tracking in an orthogonal frequency division multiplexing (OFDM) receiver by obtaining a DFT output vector; determining a sample timing offset indication using reference symbols extracted from the DFT output vector; and adapting the OFDM symbol timing using said determined indication. To provide an improved post-DFT algorithm for estimating time tracking error in OFDM receivers the determining includes (a) estimating the channel transfer function at equidistant frequency positions using said reference symbols, for a first OFDM symbol; determining plural frequency correlations for said equidistant frequency positions for said OFDM symbol; (c) repeating steps (a) and (b) for subsequent OFDM symbols; (d) linearly combining said plural frequency correlations for said plural OFDM symbols obtained in steps (a) through (c), for obtaining said sampling clock offset indication wherein the linear combining uses nonzero weights only. An OFDM receiver circuit arrangement performing this method.

Abstract: For enhancing user throughput and coverage within a multi-cell radio system a method for operating a multi-cell radio system, especially an OFDMA-based radio system including a plurality of base stations, wherein different frequency reuse factors are used within different reuse zones of one cell by a fractional frequency reuse (FFR) scheme, the method includes the following steps: allocating a size or resource to the different reuse zones, and allocating users into different reuse zones. Further, a multi-cell radio system is described, preferably for carrying out the above mentioned method.

Abstract: A system including a magnitude measuring module, an energy normalization module, and a metric generation module. The magnitude measuring module is configured to measure magnitudes of real portions of differentially demodulated signals, wherein the differentially demodulated signals are generated by differential demodulation of signals received from a base station. The energy normalization module is configured to generate a sum of energies of a plurality of subcarriers included in the signals received from the base station. The metric generation module is configured to generate a plurality of metrics for a plurality of symbols included in the signals received from the base station. The metric generation module is further configured to detect, based on the plurality of metrics, a preamble symbol included in the signals received from the base station.