Abstract: RF signal amplifiers are provided that include an RF input port, a switching device having an input that is coupled to the RF input port, a first output and a second output, a first diplexer having an input that is coupled to both the first output of the switching device and the second output of the switching device, and a first RF output port that is coupled to an output of the first diplexer. These amplifiers further include an attenuator that is coupled between the second output of the switching device and the input of the first diplexer.

Abstract: A communication device operating in time division duplex (TDD) mode using multiple antennas is provided herein. The communication device uses receive channel estimation measurements to perform transmit beamforming and multiple input multiple output (MIMO) transmission, based on self-calibration of the various up/down paths via a method of transmission and reception between its own antennas, thus achieving reciprocity mapping between up and down links. Either user equipment (UE) or a base station may routinely perform this self-calibration to obtain the most current correction factor for the channel reciprocity to reflect the most current operating conditions present during TDD MIMO operation.

Abstract: The method includes interacting between a first proximity transceiver which is associated to the customer device, and a second proximity transceiver; and generating thereby interaction information. The method further includes defining an TR069 Management protocol object called proximity-object and defining thereby at least one TR069 Management protocol parameter related to the interaction information, and furthermore interchanging between the server device and the customer device at least one name-value pair of the at least one parameter of the proximity-object by means of TR69 Management protocol messages.

Abstract: A method and apparatus of a User Equipment (UE) to simultaneously transmit information of a first type and information of a second type over a number of transmission symbols, the information of the first type and the information of the second type being respectively associated with a first Orthogonal Cover Code (OCC) and a second OCC, wherein a length of each OCC is equal to the number of transmission symbols. The method includes multiplying, at each transmission symbol, the information of the first type with a respective element of the first OCC to obtain a first output; multiplying, at each transmission symbol, the information of the second type with a respective element of the second OCC to obtain a second output; summing the first output and the second output to obtain a combined output; and transmitting the combined output.

Abstract: The present subject matter relates to systems, devices, and methods for adaptively tuning antenna elements and/or associated filter elements to support multiple frequency bands. For example, a tunable filter having an input node and an output node can be selectively tunable to define one or more pass bands associated with one or more first signal bands and one or more reject bands associated with one or more second signal bands. The tunable filter can be configured to pass signals having frequencies within the first signal bands between the input node and the output node and to block signals having frequencies within the second signal bands. Furthermore, the tunable filter can be configured to selectively tune the pass bands to have a minimum pass band insertion loss at any of a variety of frequencies, including frequencies that are greater than and less than frequencies within the reject bands.

Abstract: The present invention relates to a bidirectional voice transmission system and a method thereof, wherein the system timing of the system is divided into three time slots for carrying a control signal, a broadcast voice signal and a mobile device voice signal. The bidirectional voice transmission system is able to carry out the signal transmission by way of frequency frogging, so as to effectively avoid the signal interference from occurring between any two different signal transmitting and receiving devices. Besides, all of the mobile devices can be added into the bidirectional voice transmission system by way of dynamic building, without using any specific communication interface. The most important is that, the number of node routers can be expanded to about 65,000 in order to apply the bidirectional voice transmission system in a huge range network communication or a wild rescue field.

Abstract: The present invention relates to methods, apparatuses and computer program products for use in bi-directional channel tracking. The invention includes allocating, at a first network entity, a sub-carrier in a frequency domain for transmitting a tone to a second network entity, prohibiting, at the first network entity, receiving signals on the sub-carrier allocated for transmitting the tone, estimating, at the first network entity, a channel of residual self-interference based on the transmitted tone.

Abstract: A method for adjacent channel interference cancellation may be disclosed, comprising collecting adjacent channel usage samples at a first time; assigning coefficient weights in an adjacent channel interference model based on the adjacent channel usage samples; determining whether a radio may be available for measuring current adjacent channel usage; adjusting coefficient weights based on the current adjacent channel usage; and canceling noise in an adjacent channel at a second time based on the coefficient weights. A radio frequency chain may be coupled to the output of the radio transceiver and configured to sample adjacent channel interference caused by the radio transceiver.

Abstract: A method and apparatus for transmitting uplink control information in a wireless communication system is disclosed. A method for transmitting uplink control information in a mobile station of a wireless communication system includes performing reverse repetition coding with respect to first uplink control information, and performing joint coding with respect to the reverse repetition coded first uplink control information and second uplink control information. The first uplink control information has higher priority than the second uplink control information.

Abstract: A wireless communication device is disclosed that is capable of utilizing multiple radio access technologies (RATs) in various coordinated ways so as to optimize, and enhance the versatility, of the device's communication capabilities. One or more RATs may be selected for use, either alone or in cooperation with each other, based on various conditions, such as channel conditions, traffic, data type, and priority. When conditions change, the originally-selected communication scheme may no longer be preferred. Consequently, the device can initiate a handover to another communication scheme. Transmitters corresponding to RATs that are not currently selected are controlled to enter a low-power state in order to conserve power. However, in some circumstances, the device may utilize both RATs simultaneously.

Abstract: A method of operating a time division duplex (TDD) wireless communication system is disclosed. The method includes establishing communications with a remote transceiver. A subframe configuration including static and flexible subframes is determined and transmitted to the remote transceiver. A channel state information (CSI) report is received from the remote transceiver in response to the subframe configuration.

Abstract: The present disclosure includes systems and methods for operating a wireless communication system in multiple modes. The system is configured in a first mode when a transmission interference in a receiver of a wireless device is below a first threshold. The system is configured in one or more intermediate modes when the transmission interference is above the first threshold and below a second threshold. The system is configured in a second mode when the transmission interference is above the second threshold. The one or more intermediate modes activate interference management processes and the wireless device transmits data and receives data simultaneously. In some embodiments, transmission interference may be based on an SINR measurement.

Abstract: Disclosed is a reversible Time Division Duplex (TDD) and/or Time Division Multiple Access (TDMA) radio architecture between Transmission (Tx) and Reception (Rx) functions in a mobile communication system. Accordingly, all of the blocks/components in a Tx/Rx Radio Frequency unit are reversible between Tx and Rx functions. As such, the blocks/components are adapted to bi-directionally process a signal, either in a Tx or Rx direction, based on switching.

Abstract: A system and method for compensating phase differences between multiple local oscillators and group delay differences between multiple transceivers. The system may include; an antenna array; a plurality of transceivers connected to said antennas and operatively associated each with a local oscillator (LO), wherein at least some of the transceivers do not share a common LO, and wherein at least some of the LOs are using a common reference oscillator; a common digital beamformer circuit connected to the transceivers; a baseband processor configured to operate the system at a specified communication scheme; and a calibration circuit and software modules configured to eliminate or reduce mismatches and phase deviations between the different transceivers, wherein the calibration circuit and software modules are incorporated in system such that the elimination or reduction of mismatches and phase deviations is non-interrupting with a continuous operation of the system at the specified communication scheme.

Abstract: Disclosed are methods, systems, and apparatus for maximizing the spectral efficiency of a communications spectrum by providing a means to transmit information continuously in both directions of a radio link on the same center frequency at any given time. One embodiment may be directed to a method of communicating in a point-to-point radio system. The method may include receiving a first signal at a first antenna of a radio head. The first signal may include a transmitted data signal and interfering signals. The method continues by determining a correction signal from a transmitter of the radio head and processing the first signal to remove the interfering signals using the correction signal, and sending a second signal using a second antenna. The first and second signals may be sent and received at substantially the same time.

Abstract: Disclosed are a method and an apparatus for determining a Guard Period (GP) in a Time Division Duplexing (TDD) system. A communication method based on Time Division Duplexing (TDD) includes: determining, by a base station, a guard period based on information on a distance between user equipment and the base station; and performing, by the base station, downlink transmission to the user equipment based on the determined guard period, wherein the guard period is determined based on one of a default guard period mode, a reduced guard period mode, and a zero guard period mode, and the reduced guard period mode is a mode for setting a reduced guard period, which is shorter than the default guard period set based on the default guard period mode, and the zero guard period mode is a mode for setting a length of the guard period to 0.

Abstract: Methods and apparatus for communicating between a first node and a plurality of second nodes in a network, including a first uplink mode in which a first message is transmitted from multiple second nodes in sequence, and a second uplink mode in which a second message is sent from only a subset of nodes. A first receiving node evaluates communication path information based on messages received in the first uplink mode and returns this information via an acknowledgement to allow the subset to be selected. The first message from multiple nodes includes sequence information to allow the first node to acknowledge at an appropriate point in time. This is particularly applicable where multiple spatially separated antennas offer a receiver several observations of the same signal in an antenna diversity scheme.

Abstract: The present invention relates to methods and apparatuses for managing the time slots in time division duplex (TDD) frames in an xDSL system. According to certain aspects, power savings in a TDD system operating with vectoring may be achieved with sending of quiet symbols in time slots that do not have data and through the efficient configuration of time slots with data and/or idle symbols so as to limit the amount of processing by the vectoring engine within the DO portion of each TDD frame. In embodiments, a central controller in a DPU monitors the data buffers at the transmitter input on each line and computes an optimal configuration of the time slots in the DO portion of the TDD frame to achieve an optimal balance between performance and power dissipation.

Abstract: A method, an apparatus, and a computer program product for providing full duplex (FD) wireless communication to an FD capable (FDC) user equipment (UE) among one or more UEs include determining allocations of one or more resource blocks (RBs) to the one or more UEs, determining FD capabilities and scheduling parameters of the one or more UEs, determining at least one FD portion and at least one half duplex (HD) portion in the one or more RBs based on the FD capabilities and the scheduling parameters of the one or more UEs, wherein a concurrent downlink (DL) and uplink (UL) communication is scheduled in the at least one FD portion, and adjusting the allocations of the one or more RBs based on the at least one FD portion and the at least one HD portion.

Abstract: A user equipment (UE) including a processor configured to transmit control plane data irrespective of on-duration/off-duration status.

Abstract: Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit (203) that adds a predetermined offset value of “1” or “?1” to one of the start RBG number and the end RBG number of allocated RBG number information (b?i) output by a scheduling unit (201), thereby calculating notified RBG number information (bi). An RBG total number setting unit (204) calculates the total number of RBGs, which is to be notified, by adding “1” to the total number of allocated RBGs. A notified information generating unit (205) applies the notified RBG number information (bi) and the notified total number of RBGs (Nrb?) to a predetermined formula, thereby generating and transmitting, to terminals, notified information (r).

Abstract: The present invention relates to an apparatus and method for controlling an uplink (UL) scheduling and Hybrid Automatic Repeat reQuest (HARD) timing supported in a TDD-FDD CA environment. According to aspects of the present invention, in a TDD-FDD carrier aggregation deployment environment, an efficient UL scheduling/HARQ operation may be performed for a UE in which a cross-carrier scheduling is configured.

Abstract: A method of handling an unlink/downlink (UL/DL) configuration for a communication device includes receiving a first UL/DL configuration in first system information from a first cell in an idle mode; applying the first UL/DL configuration; receiving a second UL/DL configuration on a physical DL control channel from the first cell in a connected mode; applying the second UL/DL configuration; receiving a third UL/DL configuration in second system information from the first cell in the connected mode; and applying the third UL/DL configuration.

Abstract: A mobile communication system according to the present invention is configured such that a relay node RN is configured to time-share a subframe for transmission and reception in a Un interface and a subframe for transmission and reception in a Uu interface, and a radio base station DeNB is configured to transmit SI, which is to be transmitted in a subordinate cell, to the relay node RN via individual signaling.

Abstract: A computing network, including: a plurality of peer computing devices including code, which when executed by a peer computing device causes the executing peer computing device to cooperate with at least one other of the peer computing devices; at least one server including code, which when executed by the at least one server locates at least one of the peer computing devices; and at least one mediator including code, which when executed by the at least on mediator collects charging information from at least some of the peer computing devices; wherein, the peer computing devices, at least one sever and at least one mediator are communicatively coupled via an at least carrier-grade telecommunications network being suitable for enhancing cooperation among the cooperating ones of the peer computing devices relative to best-efforts communications among the cooperating ones of the peer computing devices.

Abstract: A method for use in a cellular access system is disclosed. The system comprises at least one Radio Base Station (RBS) and a User Equipment (UE), which can send and receive data blocks to and from each other, comprising sequence numbers. The method, performed by a reporting party, comprises sending a transmission comprising a report to the report receiving party, said report comprising information on whether or not data blocks have been received successfully. The method further comprises sending said report together with data to the report receiving party or to another party. The method further comprises attaching addresses for a recipient of the data blocks and for the report in the transmission. The method further comprises deciding the contents of the report using at least one of a list of priority rules which have been given an internal priority ranking.

Abstract: A learning on a weight of an adaptive array antenna which becomes necessary for a space division multiple access is carried out while a backward compatibility with a conventional standard is maintained. When a TRQ frame and a training frame for the learning are exchanged, a spoof is applied on these frames to preferably avoid collisions with a surrounding station STA4 that follows a conventional standard. Also, after the weight of the adaptive array antenna is learnt, a STA0 multiplexes and transmits the plurality of data frames addressed to a plurality of users while a wireless resource on a spatial axis is shared by the plurality of users, so that a throughput for one-to-many, that is, for the plurality of users as a whole is improved.

Abstract: RF communications circuitry includes a first RF filter structure, which is disclosed. The first RF filter structure includes a first passive group of RF resonators and active loss-reduction circuitry. The active loss-reduction circuitry is coupled to the first passive group of RF resonators. The active loss-reduction circuitry uses self-limiting positive feedback to reduce signal loss in the first passive group of RF resonators. Additionally, the active loss-reduction circuitry limits the self-limiting positive feedback to prevent self-oscillation in the active loss-reduction circuitry.

Abstract: A circulator based transceiver sharing a common antenna between a receive signal path and a transmit signal path is disclosed. Techniques to reduce coupled transmit signals and coupled transmit noise in a receive signal path, implemented in a variety of embodiments is disclosed allowing elimination of a diplexer, simplification of circulator design and reduction of transceiver cost. The transceiver includes means to generate and couple a correction signal into the receive signal path to attenuate coupled transmit signal in the receive path. Furthermore, the transceiver includes echo cancellation techniques to attenuate transmit noise in the receive signal path. Methods to utilize the transceiver to attenuate coupled transmit signal and transmit noise may improve transceiver efficiency, for example, in demodulation techniques and processing of data signal.

Abstract: A base station determines a first set of PUCCH resources to use for a first set of UEs to send acknowledgment information to the base station for a first group of DL subframes. The first set of PUCCH resources starts at a first index. The base station determines a second set of PUCCH resources to use for a second set of UEs to send acknowledgment information to the base station for a second group of DL subframes. The second set of PUCCH resources starts at a second index. The UEs in the first set only use the first set of PUCCH resources. The UEs in the second set use the first and second sets of PUCCH resources. For an UL reception, acknowledgement information is received from the first UEs using the first set of PUCCH resources and from the second UEs using the first and second sets of PUCCH resources.

Abstract: A multiple input multiple output (MIMO) antenna system is implemented for communications in a wireless device. MIMO beamforming techniques are utilized to improve communications, and may be utilized in full-duplex mode. Techniques include the formation of beamforming patterns having orthogonal polarizations to one another at each communication device, but having matching polarization between transmit/receive pairs located at each respective communication device. Techniques also include the formation of beamforming patterns in a direction towards another communication device to maximize transmit power in that direction while inducing nulls in the beamforming pattern to reduce self-interference coupling via antennas configured for reception. Full-duplex communications are improved through monitoring of the self-interference coupling and adapting the beamforming patterns to reduce it.

Abstract: Various methods and devices are provided to address the need for improved multicast operation. In one method, a feedback mobile device receives (301), from a multicast sender, a multicast transmission for a plurality of mobile devices, the plurality of mobile devices further including a group of non-feedback mobile devices. The feedback mobile device transmits (302) an indication of feedback mobile channel quality observed by the feedback mobile device to the multicast sender and to the group of non-feedback mobile devices. The feedback mobile device receives (303) from at least one non-feedback mobile device, an indication of non-feedback mobile channel quality at the at least one non-feedback mobile device and transmits (304) an indication of the non-feedback mobile channel quality to the multicast sender and to the group of non-feedback mobile devices.

Abstract: An antenna module for wireless communication comprises an antenna element, a first port and a second port. The antenna element comprises a first resonance frequency and a second resonance frequency. The first port is configured to receive or provide a first radio frequency signal with a first frequency range and the second port is configured to receive or provide a second radio frequency signal with a second frequency range. The first frequency range is different from the second frequency range. Further, the first resonance frequency is located in the first frequency range and the second resonance frequency is located in the second frequency range. The antenna element is configured to transmit or receive the first radio frequency signal and the second radio frequency signal simultaneously.

Abstract: A communication module includes: a plurality of receiving filters that are connected between an antenna terminal and a receiving terminal and have a receive band different from each other; and a passive circuit that is commonly connected to at least two of the plurality of receiving filters and makes a receive band of one of said at least two of the plurality of receiving filters suppressed when making another receive band of said at least two of the plurality of receiving filters transitable, wherein receiving terminals of said at least two of the plurality of receiving filters are commonalized through the passive circuit.

Abstract: A wireless transceiver includes a transmit path configured to generate a radio frequency (RF) transmit signal for transmission via an antenna. A receive path is configured to receive an RF receive signal via the antenna. A circulator-based quadrature duplexer includes an in-phase circulator and a quadrature-phase circulator configured to couple the transmit signal from the transmit path to the antenna while generating a residual transmit signal on the receive path, and to couple the receive signal from the antenna to the receive path. The circulator-based quadrature duplexer promotes cancellation of the residual transmit signal on the receive path.

Abstract: An electrical balancing network combined with coupled inductors (EBN) replaces a transmit/receive switch was used for isolation for time division duplexing transmission techniques. The EBN allows simultaneous transmit operation, or simultaneous receive operation, of multiple wireless technologies that would otherwise have to be scheduled for transmit or receive in a time division multiplexing manner. The wireless technologies may be WLAN, LTE, Bluetooth or other wireless technologies.

Abstract: The present invention discloses a method for triggering a status report of automatic repeat request. When a receiver acknowledged mode radio link control entity detects that received radio link control layer PDUs are missing, a timer T1 is set. When the timer T1 is running, new timer is not set even if a new missing radio link control layer PDU is detected. When the timer T1 is running, if the receiver acknowledged mode radio link control entity has received all missing radio link control layer PDUs which are detected before setting T1, the timer T1 is stopped. When the timer T1 times out, the receiver acknowledged mode radio link control entity triggers the status report.

Abstract: Systems and methods for coexistence of WLAN and Bluetooth networks are described. At least one embodiment includes a method for operating a wireless device in both a 802.11 network and a Bluetooth network. In accordance with some embodiments, the method comprises monitoring transmission of Synchronous Connection Oriented (SCO) slots over the Bluetooth network, informing an access point (AP) in the 802.11 network not to transmit to the device before the end of an SCO slot, transmitting a power save trigger to the AP to retrieve buffered data from the AP, and transmitting data to the AP.

Abstract: A mobile wireless communications device may include an antenna, a wireless radio frequency (RF) receiver, a wireless RF transmitter, and a duplexer connecting the wireless RF receiver and the wireless RF transmitter to the antenna. More particularly, the wireless RF receiver may include a low noise amplifier (LNA) connected to the duplexer, a first receive signal chain for wireless communications signals having a first signal type downstream from the LNA, a second receive signal chain for wireless communications signals having a second signal type different than the first frequency band downstream from the LNA, and a power divider connecting the LNA to the first and second receive signal chains.

Abstract: When wireless systems are in communication with each other, transmit power levels can vary based on a distance between the communicating wireless systems. The transmit power levels may be varied by taking into consideration optimal values of performance indicators such as SNR. However, because a transmitting wireless system typically does not receive information that describes a communication channel as seen by a receiving wireless system, the transmitting wireless system may not be able to accurately determine when, whether, and by how much to reduce the transmit power without impairing signal reception ability at the receiving wireless system. Functionality can be implemented on the transmitting wireless system to vary the transmit power level based on comparing a percentage of packets transmitted at a maximum packet transmit rate with one or more thresholds. Such a variation of the transmit power levels can help reduce power consumption and ensure performance is not compromised.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for utilizing a physical layer (PHY) header comprising an identifier for an access point (AP) or a Basic Service Set (BSS). A station (STA) that is assigned an order in a sequential response sequence may count only frames with PHY headers that contain the correct identifier. A STA may terminate its sequential access procedure when it receives a frame with a PHY header that specifies a different identifier for the AP or BSS that assigned the sequence. In this manner, the STA may prevent partly synchronizing to an overlapping network and avoid accessing the wireless medium at the wrong time.

Abstract: A system for delay-matched analog self-interference cancellation including a transmit coupler, that samples the analog transmit signal to create a sampled analog transmit signal; a delay matcher that imposes a variable delay on the sampled analog transmit signal to create a delayed analog transmit signal; an analog self-interference canceller that transforms the delayed analog transmit signal to an analog self-interference cancellation signal; and a receive coupler, that combines the analog self-interference cancellation signal with the analog receive signal.

Abstract: One embodiment is directed to a method for operating base stations in a heterogeneous network. The method may include receiving, by a first base station, an indication for a second base station to use flexible time division duplex mode (502), assessing an amount of interference that will be caused by the second base station (504)-(508), deciding how to adjust a transmission power of the second base station (509), and sending the second base station a request to adjust the transmission power (510).

Abstract: A wireless base station simultaneously transmits or receives wireless communications in different modes in different sectors of the wireless base station. The different modes may comprise a Time Division Duplex (TDD) mode and a non-TDD mode, and/or different air interfaces. Related methods and systems are described.

Abstract: Base Station (BS) and User Equipment (UE) apparatuses for configuring a Random Access CHannel (RACH), and methods thereof, are provided. The method for a BS to configure a RACH includes generating configuration information on RACH resources, transmitting the configuration information on the RACH resources to a UE, receiving a random access preamble multiplexed on a plurality of continuous RACH resources from the UE, extracting the random access preamble multiplexed on the plurality of continuous RACH resources, and detecting the extracted random access preamble. The method for a UE to configure a RACH includes receiving configuration information on RACH resources from a BS, selecting occupied RACH resources among a plurality of continuous RACH resources, generating a random access preamble, multiplexing the generated random access preamble on the selected RACH resources, and transmitting the random access preamble on the selected RACH resources to the BS.

Abstract: In a wireless communication device, in a correction value calculating mode, a control unit flips switches to the “a” sides, a modulation processing unit generates a CW signal as an I channel signal, a DAC converts the digital CW signal into an analog CW signal, an LPF eliminates the high-frequency component from the CW signal, a mixer functions as an up-converter for up-converting the CW signal, a PA amplifies the RF power of the CW signal, a mixer functions as a down-converter for down-converting the CW signal, an ADC converts the analog CW signal into a digital CW signal, a level detecting unit detects the voltage level of the CW signal, a correction value calculating unit calculates a correction value based on the detected voltage level, and a correction value storing unit stores the calculated correction value.

Abstract: A wireless communication device including: a data processing unit configured to generate an RTS (Request To Send) packet including response timing information designating transmission timings of CTS (Clear To Send) packets from each of a plurality of wireless communication devices; and a transmitter unit configured to transmit the RTS packet generated by the data processing unit.

Abstract: Embodiments of the present invention disclose a method and a node for listening. The method includes: receiving a listening reference signal in a listening pilot time slot; analyzing the listening reference signal received to obtain interference information of a node sending the listening reference signal and/or a resource configuration of a node sending the listening reference signal. By adopting the present invention, the node in the embodiments of the present invention receives the listening reference signal in the listening pilot time slot, and analyzes the received listening reference signal to obtain the interference information of a node sending the listening reference signal and/or the resource configuration of the node sending the listening reference signal, so as to listen to an interference condition and/or a resource configuration of an adjacent node.

Abstract: A system and method for non-linear digital self-interference cancellation including a pre-processor that generates a first pre-processed digital transmit signal from a digital transmit signal of a full-duplex radio, a non-linear transformer that transforms the first pre-processed digital transmit signal into a non-linear self-interference signal according to a transform configuration, a transform adaptor that sets the transform configuration of the non-linear transformer, and a post-processor that combines the non-linear self-interference signal with a digital receive signal of the full-duplex radio.

Abstract: According to an embodiment, a wireless communication apparatus includes a clock transmitting unit, a function circuit and a control unit. The clock transmitting unit is configured to transmit a clock signal through one of a plurality of transmission paths. The transmission paths are different from each other. The function circuit is configured to operate in synchronization with the clock signal transmitted by the clock transmitting unit. The control unit is configured to select one of the plurality of transmission paths according to an operation state of the wireless communication apparatus.