Abstract: A subscriber station is configured to perform a channel measurement on a communication channel in restricted sub-frames for DRX and NON-DRX modes. The subscriber station includes a receiver configured to receive signals from a base station. The subscriber station also includes processing circuitry. When the receiver receives higher layer signaling indicating that channel quality measurement is to be performed in restricted sub-frames for measurement (RFSM), the processing circuitry is configured to extend an evaluation period for monitoring a quality of the communication channel.

Abstract: Disclosed are a ship station communication apparatus and a ship station communication method that enable direct communication between adjacent ships as well as two-way communication between a ship station and a coast station without increasing a size of a ship station or costs. A ship station communication apparatus for communication between a ship station and another ship station and communication between the ship station and a coast station according to an exemplary embodiment of the present invention may include a first switch configured to switch an operation between a transmission unit of the ship station and a reception unit of the ship station; and a second switch configured to switch a frequency of the reception unit.

Abstract: A wireless device having a central control entity that coordinates multiple radio transceivers co-located within the same device platform to mitigate coexistence interference. The wireless device comprises an LTE transceiver, a WiFi transceiver, a BT transceiver, or a GNSS receiver. In one embodiment, the central control entity receives radio signal information from the transceivers and determines control information. The control information is used to trigger FDM solution such that the transceivers operate in designated frequency channels to mitigate co-existence interference. In another embodiment, the central control entity receives traffic and scheduling information from the transceivers and determines control information. The control information is used to trigger TDM solution such that the transceivers are scheduled for transmitting or receiving radio signals over specific time duration to mitigate co-existence interference.

Abstract: Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length.

Abstract: A method and an apparatus for multiplexing an antenna element, and an antenna component can reduce power loss caused by multiplexing of the antenna element. The apparatus includes an antenna element, a filter, and a DUP. The antenna element is connected to the filter and the DUP separately, and a suppression band of the filter includes a bandpass band of the DUP. The filter is configured to filter the signals sent by the antenna element and the DUP and/or the signals to be sent to the antenna element and the DUP to make signals of a first band pass through. The DUP is configured to filter the signals sent by the antenna element and the filter and/or the signals to be sent to the antenna element and the filter to make signals of a second band pass through.

Abstract: A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function.

Abstract: Embodiments of a multi-transceiver wireless communication device and methods for adaptive multi-band communication are generally described herein. In some embodiments, the multi-transceiver wireless communication device is configurable for half-duplex operation and for asymmetrical full-duplex operation on two non-interfering channels. In some embodiments, a contention-based channel access procedure may be performed to attempt to gain access to both a primary channel and an auxiliary channel. A primary transceiver and an auxiliary transceiver may be configured for asymmetrical full-duplex operation when access to both the primary channel and the auxiliary channel is granted. One of the transceivers may be configured for half-duplex operation when access to only one of the channels is granted.

Abstract: Techniques for providing transformer-based CMOS oscillators capable of operation with low voltage power supplies. In an exemplary embodiment, an LC tank is provided at the drains of a transistor pair, and the inductance of the LC tank is mutually magnetically coupled to an inductance between the gates of the transistor pair. A separate complementary transistor pair is also coupled to the LC tank. A further exemplary embodiment provides an LC tank at the gates of a transistor pair, as well as for three-way coupling amongst a tank inductance, an inductance between the gates of the transistor pair, and an inductance between the gates of a complementary transistor pair.

Abstract: A method of transmitting and receiving information related to a relay station is disclosed. The present invention includes the steps of periodically receiving hop information indicating whether a hop number from the relay station to a base station is odd via a superframe header and determining a timing point for the mobile station to switch to a receive mode according to the hop information. Accordingly, a mobile station is informed of a hop number between a base station and a multi-hop relay station, whereby a waste of power of the mobile station is minimized. And, resources can be efficiently usable.

Abstract: In one embodiment, a client device determines when it is coupled to an IoT/LLN device to establish and enable an IP link between a headset interface on the client device and a signal interface on the IoT/LLN device. Once the IP link is established, a duplex data signal is transmitted between the client device and the IoT/LLN device, via the IP link.

Abstract: A method for controlling interference between a plurality of neighboring base stations for a terminal by a serving base station of the terminal in a communication system is provided. The method includes receiving interference amount information on a first region of a downlink frame from the terminal, determining an interference amount estimate for the first region based on the received interference amount information, comparing the determined interference amount estimate with an interference amount tolerance for the first region; and transmitting an interference indicator requesting reduction in transmission power for the first region to the plurality of neighboring base stations when the interference amount estimate exceeds the interference amount tolerance.

Abstract: The present system relates to a method for transmitting control information in a wireless communications system that supports coordinated multi-point (CoMP) including N (N>1) transmission points. The method comprises: generating control information for downlink transmission of the N transmission points; and transmitting the generated control information to a user device, wherein the control information contains a control information region for transmission of intrinsic control information on a reference transmission point among the N transmission points, and N?1 control information regions for transmission of intrinsic control information on the N?1 transmission points.

Abstract: An exemplary MIMO transceiver includes a first transmitting channel and a second transmitting channel. The first transmitting channel includes a first power amplifier and a first transmission line which are connected together in series. The second transmitting channel includes a second power amplifier. A common terminal of a first single pole double throw (SPDT) switch is connected to the second power amplifier. A first terminal of the first SPDT switch is connected to the first power amplifier through a second transmission line. A common terminal of a second SPDT switch is connected to the second power amplifier. A first terminal of second SPDT switch is connected to the first power amplifier through a third transmission line. A second terminal of the second SPDT switch is connected to a second antenna. The first power amplifier, the second transmission line, and the third transmission line cooperatively act as a balance power amplifier.

Abstract: A base station comprises: an area information generation unit which generates information for a determined second area by determining an additional assignment of the second area different from a first area to a component carrier (CC) of the first area having a bandwidth smaller than a bandwidth of a maximum assignable CC; a mapping control unit which controls an assignment of a reference signal to a frequency band including the first and second area by generating the reference signal for channel estimation in the first and second areas; a signal generation unit which generates the information for the second area and the reference signal as a wireless signal; and a transmission unit for transmitting the generated wireless signal and is characterized by transmitting data to a user terminal and receiving the data from the user terminal by assigning the resources to the first and second areas.

Abstract: In wireless communication with another communication apparatus in a predetermined wireless network, overhead information defined in a media access control layer is divided into a header of information necessary for the common access control and a header of information necessary for each payload. Address information is added to the header of information necessary for the common access control to transmit the generated header attached to the transmission data. For example, in a case of forming a physical burst in which a plurality of data payloads are combined into one, a frame structure is provided without useless repetition of address information.

Abstract: The disclosed invention relates to a transceiver system having a bypass signal path that enables low power consumption. The transceiver system has a plurality of signal paths respectively having a filtering element with a stop band and with a pass band. An antenna switching module (ASM) has a plurality of RF ports and a plurality of switching elements. Respective RF ports are connected to a separate one of the plurality of switching elements that selectively connect the RF port to an antenna port of the ASM. A control unit generates control signals that operate the plurality of switching elements to selectively connect the plurality of signal paths to the antenna port. A filtering response at the antenna port is equal to a combination of the filtering responses of filtering elements within the connected signal paths.

Abstract: Enhanced sounding reference signal (SRS) transmissions for multiple input, multiple output (MIMO) operation are disclosed in which a user equipment (UE) detects an observed interference level for each receiver chain of the UE. In response to an imbalance, the UE precodes a SRS targeting downlink operation to indicate the imbalance. The UE then transmits the precoded SRS. In alternative aspects, the precoded SRS vector may be determined by an evolved nodeB (eNB). In such aspects, the eNB determines the precoded SRS vector targeting downlink operations for the served UEs, wherein the determined precoded SRS vector includes determining the precoded SRS vector on a per UE basis, enabling the precoded SRS vector for either one or both of frequency division duplex (FDD) systems and time division duplex (TDD) systems, or enabling the precoded SRS vector for aperiodic SRS only. The eNB then transmits the determined precoded SRS vector to the UE.

Abstract: Methods and systems for detecting a preamble of a data packet in wireless communication systems is provided. To determine a preamble from a received signal, which may include a noise-altered preamble bit sequence, linear feedback shift registers (LFSRs) can be used to generate a count of the received preamble, and the count is compared to pre-generated scores to identify a match. Example methods include for each of a number of different preamble orientations of a preamble, generating a count value based on a comparison of bits of the preamble with a random bit sequence to produce a sequence of count values, and comparing the sequence of count values with m sequences of count values. A sequence of count values is identified that includes a maximum number of matching elements, and the received preamble is determined to be one of the m preambles corresponding to the identified sequence.

Abstract: The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means, instructions and steps for combining two signals. In one example, it comprises at least one baseband modulator, a plurality of amplifiers where the signals are multiplied by a gain; at least one combiner operably connected to the amplifiers where the signals are combined; and a phase shifter where one of the signals is phase shifted with respect to the other signal. In another example; the apparatus further comprises a phase shifter operably connected to the at least one baseband modulator to provide a ?/2 phase shift between the two signals. In another example, the at least one baseband modulator comprises a BPSK baseband modulator on an I axis and a BPSK baseband modulator on a Q axis.

Abstract: A wireless communication system which performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N is an integer of 2 or more and M is an integer of 1 or more) is disclosed. The system includes notifying means, training means, channel matrix estimation means, beamforming information feedback means, transmission weight matrix setting means, and beamforming means.

Abstract: The present invention provides systems and methods for adaptive digital data transmission rate control. A digital data transmission system for adaptively transferring packets over a transmission link includes a client device having a bandwidth control module and a host device coupled to the client device over the transmission link. The host device includes one or more bandwidth control registers and a packet builder. The bandwidth control module determines a packet speed and/or size for packets transmitted from the host device to the client device over the transmission link. The bandwidth control registers store the requested packet size and/or rate. The packet builder accesses these registers when transmitting packets to determine the requested packet size and/or rate.

Abstract: A method for modifying an application framework devised for network-based telephony to operate in a local telephony, comprising adapting the application framework to interact with a communication device operable cooperatively with a local base, and emulating a functionally of the network related to the application framework according to an operation of the local base, at least partially, and an apparatus for using the modified application framework.

Abstract: A method and device enables establishing radio communications on a trunked network using an inbound proxy. The method includes receiving, at a first subscriber device, a control signal from a base station on an outbound control channel of the base station. A request is then transmitted from the first subscriber device to the base station on an inbound control channel of the base station. Next, it is determined, at the first subscriber device, that the request was not received by the base station. The request is therefore re-transmitted from the first subscriber device to a second subscriber device on an inbound proxy control channel. The first subscriber device then receives a response to the request from the base station. The first subscriber device is thus able to subsequently establish radio communications on the trunked network via the second subscriber device.

Abstract: Co-channel communications methods, systems, and devices are provided. Embodiments can be utilized to allow multiple users on one time slot (MUROS). For example, a method for wireless communication by a first remote station can comprise receiving a first co-channel signal that has a first amplitude and a second co-channel signal that has a second amplitude, wherein a difference between the first amplitude and the second amplitude is less than a threshold; selecting one of the first co-channel signal and the second co-channel signal; and demodulating the selected co-channel signal. Other aspects, embodiments, and features are also claimed and described.

Abstract: In an embodiment, an originating device sends a request, to a server, to initiate a full-duplex session with a target device. Responsive to the full-duplex request, a half-duplex session is set-up from the originating device to the target device before the full-duplex session is set-up. The target device indicates its acceptance of the half-duplex session, receives half-duplex media from the originating device and selectively indicates its acceptance of the full-duplex session. In another embodiment, during a session currently supported either by half-duplex or full-duplex, the server arbitrating the session receives a request from one of the session participants to transition the session to another duplex-type. The server then selectively transitions the duplex-type of the session.

Abstract: Wireless-device-to-wireless device (WD-WD) interference in a full-duplex wireless network is managed by an uplink transmit power control technique that minimizes interference experienced in downlink signals at other wireless devices in the wireless network. In one exemplary embodiment, an instantaneous antenna gain of the wireless device and a target uplink Signal-to-Interference-plus-Noise Ratio (SINR) of an uplink signal of the wireless device to the home base station are determined at the wireless device. A Noise plus Interference level at the home base station is received by either a closed-loop or an open-loop feedback technique. The uplink power level for an uplink signal of the wireless device is determined based on the determined antenna gain, the determined target uplink SINR and the received Noise plus Interference level at the home base station.

Abstract: A method of handling system information reception for a mobile device capable of receiving and transmitting on a plurality of component carriers in a wireless communication system is disclosed. The method comprises receiving system information of a secondary component carrier of the plurality of component carriers via a first dedicated signaling, and maintaining the system information of the secondary component carrier valid until an update of the system information of the secondary component carrier is received via a second dedicated signaling.

Abstract: Operating at least one low duty cycle (LDC) controller to maintain synchronization between the LDC controller and a plurality of LDC terminals operating over a communication network using only overhead channels of the network and conforming to the protocol and timing of said network, wherein synchronization between the LDC controller and the plurality of LDC terminals is maintained separately from the protocol and timing of the communication network, and enables the LDC controller to schedule power down and wake up of the plurality of LDC terminals for durations longer than allowable under the protocol and timing of the communication network.

Abstract: A wireless communications system supports both cellular communications and direct peer to peer communications. The cellular communications use FDD downlink and uplink bands for control and traffic signaling. An access point employs control over direct peer to peer communications. Peer to peer mode control signals from the access point are transmitted to wireless terminals using the FDD cellular downlink band. Peer to peer mode control signals from wireless terminals are transmitted to an access point using the FDD cellular uplink band. Peer to peer traffic signals between wireless terminals are communicated using a TDD band. In one embodiment, the access point communicates priority information to peer to peer network wireless terminals, and the wireless terminals make peer to peer traffic transmission decisions in a decentralized manner using the received priority information. In another embodiment, the access point directly schedules peer to peer traffic in the peer to peer network.

Abstract: A system for radio communication is disclosed. The radio system includes a plurality of radio transceivers and a switch. Each transceiver cannot be used alone to meet an operational requirement. The switch configured to switch between the plurality of transceivers to provide the operational requirement.

Abstract: A method and an apparatus for transmitting a physical random access channel signal are disclosed by in the present invention. The method includes: when transmitting a physical random access channel (PRACH) signal, a terminal carries out pre-compensation for the frequency domain signal according to the estimated frequency spectrum gain of downlink channel, converting it into the time domain signal and transmits it to the base station. In the present invention, by way of measuring the spectral response of the downlink channel and carrying out pre-compensation for the frequency selective fading when transmitting the PRACH signal, using the symmetry of the uplink channel and downlink channel in the TD system, the adverse effect on the PRACH detection due to multipath channel could be effectively eliminated and the detection probability of the PRACH signal and measuring accuracy of transmission delay could be improved.

Abstract: Apparatus and method for improving throughput in a wireless device accessing coexisting networks. In one embodiment, a wireless device includes first and second wireless transceivers, a power state controller, and an access controller. The first wireless transceiver is configured to access a first wireless network. The second wireless transceiver is configured to access a second wireless network. The power state controller is configured to switch the first wireless transceiver between an active state and a sleep state. The power consumed by the first wireless transceiver while in the sleep state is reduced relative to the active state. The access controller is configured to alternately allocate a wireless medium to the first wireless transceiver and the second wireless transceiver. The power state controller and the medium access controller are configured to coordinate power state switching of the first wireless transceiver and wireless medium access by the second wireless transceiver.

Abstract: A method and arrangement in a first network node, which is serving a user equipment, for determining whether a handover of the user equipment is to be made to a second network node. The first network node and the second network node are configured for wireless communication with each other over a backhaul link in half-duplex communication mode. The first network node obtains an estimation of data-rate performance over the backhaul link, and determines whether to hand over the user equipment to the second network node based on the obtained estimation of the data-rate performance over the backhaul link.

Abstract: A method and arrangement for connecting an ad-hoc communication network (101) to a permanent communication network (102), e.g. to a cellular mobile communication network. The ad-hoc communication network is established between communication devices (103-106) and a gateway device (107) using a routing protocol that is run in the gateway device and in the communication devices. A protocol address that is associated in a communication device with a protocol data unit is determined on the basis of a control action given by a user of the communication device. In a gateway device, the protocol data unit is relayed to the permanent communication network if the protocol data unit is provided with a pre-determined protocol address. The user of the communication device can determine with the aid of the control action whether he is communicating only inside the ad-hoc communication network or via the permanent communication network.

Abstract: A communication apparatus to support multiband communication is provided. The communication apparatus may be applicable to, for example, a duplexer module for the multiband communication. The communication apparatus may be manufactured to be small and light by simplifying a circuit structure of the duplexer module.

Abstract: A communications system includes a Voice over IP (VoIP) device, a plurality of radios each configured to communicate using a plurality of different radio channels, and a bridge radio. The bridge radio includes a VoIP interface configured to communicate with the VoIP device, a radio interface configured to communicate with the radios, and a controller coupled to the VoIP interface and the radio interface. The controller is configured to receive a communication request from the VoIP device to communicate via a given radio channel. The communication request includes an IP address associated with the bridge radio and a channel identifier associated with the given radio channel. The controller also bridges communications between the VoIP device and at least one of the radios over the given radio channel based upon the received communication request.

Abstract: An operation channel in a multi-hop network is determined. The network uses a set of channels, and one of the nodes is a network management node. The operation channel is selected in the network management node. Then, the network management node broadcasts a channel information packet including the operation channel using all channels. The channel information packet is received in each of other nodes, either directly from the network management node or from an intermediate node that received and rebroadcasted the channel information packet. Lastly, the operation channel in each node is set according to the channel information packet until the network is formed.

Abstract: Disclosed is a method of deciding a radio link failure at a base station. The method includes initializing a signal quality degradation count value, measuring an uplink signal quality at predetermined time intervals, and increasing the signal quality degradation count value when the uplink signal quality is less than a predetermined lower limit quality threshold value, wherein a radio link failure is decided when the signal quality degradation count value reaches a predetermined radio link failure decision threshold value while the measuring of the uplink signal quality and the increasing of the signal quality degradation count value are repetitively performed a predetermined number of times.

Abstract: A front end radio architecture (FERA) is disclosed that includes a transmitter block coupled to a power amplifier (PA) via first and second input terminals. A first split-band duplexer is coupled to a first output terminal of the PA and a second split-band duplexer is coupled to a second output terminal of the PA. The PA includes a first amplifier cell and a second amplifier cell that when coupled to the first and second split-band duplexers makes up first and second transmitter chains. Only one of the first and the second transmitter chains is active when a first carrier and a second carrier have a frequency offset that is less than an associated half duplex frequency within a same split-band duplex band, thus preventing third order inter-modulation (IMD) products from falling within an associated receive channel. Otherwise, the first and the second transmitter chains are both active.

Abstract: A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises a transceiver which receives the base station duplex capability message. A RACH characteristics processor determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller controls the transmission of an access message to the first base station in response to the at least one transmit characteristic.

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: A cellular communication system comprises a first base station serving at least a first user equipment. The base station comprises functionality for transmitting a base station duplex capability message to user equipments using a transmission format which is common to a plurality of duplex modes. A first user equipment comprises a transceiver which receives the base station duplex capability message. A RACH characteristics processor determines at least one transmit characteristic for an access message in response to the base station duplex capability message and a RACH transmit controller controls the transmission of an access message to the first base station in response to the at least one transmit characteristic.

Abstract: The present invention provides a method of allocating resources in a wireless communication system. The method includes requesting persistent allocation of resources for a data spurt in response to detecting the beginning of the data spurt and performing non-persistent resource allocation for at least one packet in the data spurt. The non-persistent resource allocation is performed in response to determining that persistent resources are not available for allocation. The method also includes transmitting the packet using the allocated non-persistent resources.

Abstract: A method for using a joint decoding engine in a wireless device is disclosed. A first symbol stream and a second symbol stream in a received multiple input multiple output (MIMO) signal is determined. A scaled channel estimate for a wireless transmission channel and a scaled noise covariance of the MIMO signal are also determined. The scaled channel estimate and the first symbol stream are whitened. Max log maximum a posteriori (MLM) processing is performed on the whitened first symbol stream to produce a first data stream. The first data stream may be de-rate matched and decoded to produce a decoded first data stream.

Abstract: Systems and methods for initiating telephony calls are presented. In one example, a user selection of a desired application item is received at a computing device and a dial number associated with the desired application item is transmitted from the computing device to a wireless headset. The dial number is received at the wireless headset and a call is responsively initiated by transmitting the dial number from the wireless headset to a mobile phone device.

Abstract: A system and method to provide an emergency communication network including a first responder device and at least one recipient by using a local agency communication node configured to relay communications using, in part, a VoIP interface to retransmit a communication received at a local agency as a ham communication received by at least one ham radio communication node which may be sent to and received by one or more recipients though a VoIP interface over the Internet.

Abstract: A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function.

Abstract: A reactance filter comprising suppression in the stop band comprises an input connection (1) for applying an input signal (ES), an output connection (A100) for outputting an output signal (TS), at least series resonator (11, 12, 13, 14), which is connected in a signal path (SP) between the input connection (1) and the output connection (A100), a parallel resonator (21), which is connected between the signal path (SP) and a connection (M) in order to apply a reference potential, and an inductor (31), which is connected in series to the parallel resonator (21). A capacitor (50) is connected by means of one connection (A50a) between the at least one parallel resonator (21) and the inductor (31) and by means of the additional connection (A50b) to the output connection (A100). By connecting the reactance filter as a transmission filter in a duplexer component, the isolation in the receiving band of the duplexer component can be improved.

Abstract: System and methods are provided for processing time-division signals and frequency-division signals using a multi-mode transceiver. The example system includes a power amplifier, a switching component, and a duplexer. The power amplifier is configured to receive a first time-division signal from the transceiver and to generate an amplified time-division signal based on the first time-division signal if the transceiver is in a time-division mode. The power amplifier is further configured to receive a first frequency-division signal from the transceiver and to generate an amplified frequency-division signal based on the first frequency-division signal if the transceiver is in a frequency-division mode. The switching component is configured to receive the amplified time-division signal from the power amplifier, and to output the amplified time-division signal for transmission.

Abstract: Techniques for supporting data transmission and reception on multiple bands for carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes first and second antenna interface circuits coupled to first and second antennas, respectively. The first antenna interface circuit includes a first transmit (TX) filter for a first band, which may be part of a first triplexer or duplexer. The first TX filter filters a first radio frequency (RF) signal prior to transmission via the first antenna. The second antenna interface circuit includes a second TX filter for a second band, which may be part of a second triplexer or duplexer. The second TX filter filters a second RF signal prior to transmission via the second antenna. The first and second RF signals may be transmitted simultaneously on the first and second bands for carrier aggregation.