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Carrier Aggregation patents

      

This page is updated frequently with new Carrier Aggregation-related patent applications.




new patent Uplink scheduling apparatus and method based on uplink report in wireless communication system
A method and an apparatus for scheduling uplink transmissions according to a maximum transmission power and power headrooms (phs) reported by a user equipment (ue) are provided. A method for reporting the phs for carriers used by a terminal in a mobile communication system supporting carrier aggregation includes generating a message including the phs along with indicators indicating whether a real transmission is scheduled on an uplink data channel of corresponding carrier, and including, when the real transmission is scheduled, a maximum transmission power used for calculating the phs in the generated message..
Samsung Electronics Co., Ltd.


Mobile communication system and user equipment
In tdd-fdd carrier aggregation, delay in downlink retransmission timing and ue's battery energy consumption are reduced. In a mobile communication system that performs carrier aggregation using a first component carrier associated with a first cell conducting radio communication in a first duplex mode and a second component carrier associated with a second cell conducting radio communication in a second duplex mode, a cell is provided on which an uplink control channel carrying acknowledgement or negative acknowledgement for the first component carrier and the second component carrier is transmitted, and a user equipment performs discontinuous reception using a timer value corresponding to a duplex mode of said cell on which the uplink control channel is transmitted upon receiving at least one of a first downlink data signal transmitted over the first component carrier and a second downlink data signal transmitted over the second component carrier..
Ntt Docomo, Inc.


User equipment, band balancing controller and rs-sinr reporting method
A user apparatus in a mobile communication system supporting carrier aggregation includes a measurement unit configured to measure an rs-sinr (reference signal-signal to interference and noise ratio) for a reference signal in a physical downlink control channel transmitted from a base station; and a reporting unit configured to report the measured rs-sinr to the base station in accordance with a predefined reporting trigger.. .
Ntt Docomo, Inc.


Transmission of control information in a wireless network with carrier aggregation
Techniques for sending control information to support operation on multiple component carriers (ccs) are disclosed. A user equipment (ue) may be configured with multiple ccs for carrier aggregation.
Qualcomm Incorporated


Uplink control data transmission
Methods and systems for transmitting uplink control information and feed back are disclosed for carrier aggregation systems. A user equipment device may be configured to transmit uplink control information and other feedback for several downlink component carriers using one or more uplink component carriers.
Interdigital Patent Holdings, Inc.


Method and configuring position of frequency resource
A method and an apparatus are used to configure a position of a transmission frequency resource according to a synchronization relationship between devices, includes: adjusting, by a first device, synchronization according to synchronization information of a second device, in a case in which the first device is synchronous with the second device, or the second device can adjust a configured frequency resource, configuring a frequency resource close to an edge of a frequency band, where the frequency resource is used to transmit data, and notifying first user equipment; in a case in which the devices are synchronous, adjusting, by the first device and the second device, a start moment or an end moment of transmitting or receiving a signal; and using, by the first device in a manner of extending a bandwidth of a carrier frequency or a manner of carrier aggregation.. .
Huawei Technologies Co., Ltd.


Component carrier (de)activation in communication systems using carrier aggregation
This invention relates to the proposal of component carrier (de)activation message that is allowing a activation or deactivation of one or more component carriers in the uplink or downlink. Furthermore, the invention relates to the use of the new component carrier (de)activation message in methods for (de)activation of downlink component carrier(s) configured for a mobile terminal, a base station and a mobile terminal.
Sun Patent Trust


System and user equipment initiated management of carrier aggregation
Methods that are performed by a user equipment (ue) and corresponding methods of base stations that allow a ue to determine whether the ue is in a carrier aggregation enabled or disabled state. One exemplary embodiment of a method performed by a ue determines a first artificial value for a first parameter and a second artificial value for a power headroom (phr) for a secondary component carrier (scc), the first and second artificial values being substantially low relative to a configuration of the network, generates an artificial report including the first and second artificial values, transmits the artificial report to a primary cell providing a primary component carrier (pcc) and receives an indication that the ue is placed in a carrier aggregation disabled state..
Apple Inc.


Random access process in carrier aggregation
A mac layer instructs a physical layer to transmit a preamble as a part of a random access (ra) procedure on a licensed assisted access (laa) cell. The wireless device performs an lbt for transmission of the preamble.
Ofinno Technologies, Llc


Opportunistic carrier aggregation using short range extension carriers
Systems and methods for providing opportunistic carrier aggregation to short range or low power extension carriers are generally disclosed herein. One embodiment includes data traffic offload techniques to offload data communicated in a wireless wide area network (wwan) from a primary cell to a secondary cell.
Intel Corporation


Base station, user equipment, and measurement inter-base station carrier aggregation

Embodiments of the present invention provide a base station, user equipment, and a measurement method for inter-base station carrier aggregation. The method includes: a primary base station of the ue sends a message include indication information to request the ue report a timing offset between the primary base station and a secondary base station of the ue; the secondary base station calculates a corrected measurement gap information according to a measurement gap information and the timing offset; the secondary base station stops scheduling the ue in a measurement gap period indicated by the corrected measurement gap information.
Huawei Technologies Co., Ltd.

Periodic channel state information reporting for enhanced carrier aggregation

Methods, systems, and devices for wireless communication are described. A user equipment (ue) may detect the size of a payload for reporting hybrid automatic repeat request (harq) feedback for transmissions on a set of component carriers (ccs) and may determine whether a scheduling request (sr) and/or a periodic channel state information (p-csi) report is present.
Qualcomm Incorporated

User equipment and method

Some techniques are disclosed for determining downlink control information for use in each cell in carrier aggregation using a fdd cell and a tdd cell together. One aspect of the present invention relates to user equipment, comprising: a transmission and reception unit configured to transmit and receive a radio channel to/from a base station via multiple cells configured for carrier aggregation in accordance with a frequency division duplex (fdd) mode and a time division duplex (tdd) mode; a cell management unit configured to manage the multiple cells; and a communication control unit configured to determine whether a duplex mode applied to a primary cell in the multiple cells is either the fdd mode or the tdd mode and receive and demodulate downlink control information compliant with the determined duplex mode for each carrier aggregation implemented cell..
Ntt Docomo, Inc.

Methods, base station and wireless device for supporting radio communication

A base station (300), a wireless device (302) and methods thereinfor supporting radio communication, wherein the base station (300) employs carrier aggregation with multiple carriers serving a primary cell, pcell, and at least one secondary cell, scell. The base station (300) signals (3:3) an scell status to the wireless device (302), the scell status indicating whether the at least one scell will be in active state where the base station (300) transmits downlink signals on a carrier serving the at least one scell, or in inactive state where the base station (300) does not transmit downlink signals on the carrier serving the at least one scell.
Telefonaktiebolaget Lm Ericsson (publ)

Terminal device, base station device, and communication method

A terminal device configured to communicate with a base station device includes a higher layer processing unit that configures a mode of periodic channel state information reporting, and a transmission unit that periodically performs feedback of channel state information on a physical uplink control channel by using the mode. A period and an offset in the channel state information reporting are determined based on a parameter given in a first table in a case of frequency division duplexing, or based on a parameter given in a second table in a case of carrier aggregation for frequency division duplexing and time division duplexing where a primary cell has a frame structure type-2.
Sharp Kabushiki Kaisha

User terminal, radio base station and radio communication method

The present invention is designed to realize dynamic tdd that is based on tdd-fdd ca. A user terminal, by employing carrier aggregation or dual connectivity, performs radio communication via a plurality of cells including a primary cell, which is an fdd cell, and a secondary cell, which is a dynamic tdd cell, and has a receiving section that receives control information transmitted from the primary cell, and a cell-specific downlink signal transmitted from the dynamic tdd cell, and a control section that decides whether one or a plurality of subframes in the dynamic tdd cell are uplink subframes or downlink subframes based on the control information, and controls operations with respect to the dynamic tdd cell, and the control section executes control so that a subframe to receive the cell-specific downlink signal from the dynamic tdd cell and a subframe to retransmit uplink data are different..
Ntt Docomo, Inc.

Shared spectrum load balancing based on network load

A wireless telecommunications system may be configured to provide wireless service via unlicensed, licensed, and/or shared frequency bands (e.g., frequency bands that are shared with other telecommunications systems, and for which access is regulated by an external entity). A load balancing technique, described herein, may provide load balancing between licensed and shared frequency bands based on relative load of the licensed and shared networks, and/or other factors (e.g., a priority access license (“pal”) of a base station to which the user device is attached).
Verizon Patent And Licensing Inc.

Method and security communication of carrier aggregation between base stations

This invention discloses a method for security communication of carrier aggregation between base stations, which method comprises receiving, by a user equipment, a first message to add a cell controlled by a secondary base station as a service cell sent by a primary base station; and creating, by the user equipment, a security key for communication with cells controlled by the secondary base station according to security context of the primary base station and the first message. This invention further discloses the corresponding user equipment and base stations.
Huawei Technologies Co., Ltd.

Simplified multi-band/carrier carrier aggregation radio frequency front-end based on frequency-shifted antennas

Certain aspects of the present disclosure provide methods and apparatus for processing signals using separate frequency-shifted antennas in a radio frequency front-end (rffe) of a wireless communication device. One example apparatus includes a transceiver; a first antenna configured to support communications in a first frequency range; a second antenna configured to support communications in a second frequency range different than the first frequency range, wherein the second frequency range partially overlaps the first frequency range; a first circuit block coupled to the transceiver and configured to process one or more first signals for transmission over a first bandwidth via the first antenna; and a second circuit block coupled to the transceiver and configured to process one or more second signals for reception over a second bandwidth via the second antenna, wherein the second bandwidth at least partially overlaps the first bandwidth..
Qualcomm Incorporated

Power detection of individual carrier of aggregated carrier

Aspects of this disclosure relate to detecting power associated with an individual carrier of a carrier aggregated signal. In an embodiment, a carrier aggregation system includes radio frequency (rf) sources, a transmission output, and a directional coupler.
Skyworks Solutions, Inc.

Methods and apparatus relating to lte fdd-tdd inter-system carrier aggregation in advanced wireless communication systems

A signalling method is disclosed for use in an advanced wireless communication network that supports fdd-tdd carrier aggregation (ca). The signalling method comprises configuring the ue (by establishing radio resource control (rrc) connection with the network through the first access node) for data transmission between the ue and the network through the first access node on the first duplex mode carrier as a primary component carrier (pcell), configuring the ue (via dedicated rrc signalling on the pcell) for data transmission between the ue and the network through the second access node on the second duplex mode carrier as a secondary component carrier (scell), and performing scheduling for data transmission on the aggregated scell using either self-scheduling or cross-carrier scheduling..
Nec Corporation

User terminal, radio base station and radio communication method

The present invention is designed to implement dynamic tdd that does not rely on tdd-fdd ca-based tdd ul-dl configurations. A user terminal executes radio communication with a plurality of cells by employing carrier aggregation, and has a receiving section that, when a connection is established with a secondary cell serving as a dynamic tdd cell, receives control information, which is transmitted from a primary cell and which includes a dynamic command with respect to a subframe configuration of the dynamic tdd cell, and a transmission timing of an uplink signal, and a control section that decides whether or not one or a plurality of subframes in the dynamic tdd cell are uplink subframes or downlink subframes based on the control information, and, furthermore, controls the transmission timing of the uplink signal based on the transmission timing..
Ntt Docomo, Inc.

Method for transmitting channel state information in wireless access system

A method is provided for reporting channel state information (csi) in a wireless access system which supports carrier aggregation. A user equipment (ue) measures a first type csi for a first component carrier (cc) of two or more downlink (dl) ccs, and measures a second type csi for a second cc of the two or more dl ccs.
Lg Electronics Inc.

Uplink power control for a secondary cell in carrier aggregation

A wireless device transmits first uplink control information (uci) on a physical uplink control channel (pucch) secondary cell employing an adjustment factor. The adjustment factor is updated when the wireless device receives a transmit power control command for the secondary pucch.
Ofinno Technologies, Llc

Network node, wireless device and methods therein for controlling a radio communication using carrier aggregation

A network node (600), a wireless device (602) and methods for controlling a radio communication using carrier aggregation. The wireless device (602) sends (6:1) ue capabilities to the network node (600), indicating a maximum capability limit per component carrier and a total maximum capability limit across all component carriers to be used in the radio communication.
Telefonaktiebolaget Lm Ericsson (publ)

Method for transmitting and receiving signals using multi-band radio frequencies

A method is provided for transmitting, by a base station, signals in a communication system. carrier aggregation configuration information is transmitted to a mobile station via a primary carrier band of the mobile station.
Lg Electronics Inc.

Communication carrier aggregation system

Embodiments of the present invention provide a communication method for a carrier aggregation system. The communication method includes receiving physical downlink share channel pdsch information sent by a base station through a subframe n of a secondary cell.
Huawei Technologies Co., Ltd.

Component carrier activation/deactivation in multi-carrier systems

Methods and apparatus for addressing wireless transmit/receive unit (wtru) behavior in response to configuration, configuration parameters and access issues related to the activation/deactivation process when the wtru may be configured with multiple serving cells or carrier aggregation.. .
Interdigital Patent Holdings, Inc.

Capability extensions for multimedia broadcast multicast services

A base station of a mobile communication network supports continuity of a multimedia broadcast multicast service, mbms, for a terminal. The base station receives, from the terminal, an information element informing the base station of a combination of bands, which the terminal supports for carrier aggregation.
Telefonaktiebolaget Lm Ericsson (publ)

Communication carrier aggregation system

Embodiments of the present invention provide a communication method for a carrier aggregation system. The communication method includes receiving physical downlink share channel pdsch information sent by a base station through a subframe n of a secondary cell.
Huawei Technologies Co., Ltd.

Antenna interface circuits with quadplexers

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.
Qualcomm Incorporated

Front-end module for carrier aggregation mode

A new front-end module is disclosed. In an embodiment the front-end module is configured to operate carrier aggregation modes using a cascade of switches and an intelligent set of bands.
Epcos Ag

Method and transmitting and receiving uplink control information in carrier aggregation environment

A method for transmitting uplink control information in a carrier aggregation environment, the method includes: calculating n pieces of response data, each having 1 bit or 2 bits, for n subframes received from an enhanced node b (enb) through n downlink component carriers and decoded by a user equipment (ue); calculating k bits of integrated response data by applying a mapping rule reflecting a weight given to a downlink component carrier of each of the n pieces of response data; and performing a block coding of the integrated response data to produce encoded integrated response data, and transmitting the encoded integrated response data to the enb.. .
Pantech Co.,ltd.

Method for receiving downlink control channel in wireless communication system applying carrier aggregation technique, and apparatus therefor

Disclosed in the present application is a method for detecting a downlink control channel by a terminal in drx mode in a wireless communication system applying carrier aggregation technique. Specifically, the method comprises the steps of: setting downlink control channel detection sub-frames in a tdd primary cell and an fdd secondary cell on the basis of a specific uplink/downlink sub-frame setting related to the tdd primary cell; detecting the downlink control channel in one of the downlink control channel detection sub-frames through the tdd primary cell or the fdd secondary cell while a preset drx related timer defined by the number of sub-frames operates: and receiving a downlink data signal on the basis of the detected downlink control channel, wherein the downlink control channel detection sub-frames in the fdd secondary cell are sub-frames on the fdd secondary cell, conforming to the location of downlink sub-frames in the specific uplink/downlink sub-frame setting or the location of special sub-frames including a downlink resource having the length identical to or greater than a preset length..
Lg Electronics Inc.

Method for configured maximum output power reporting and user equipment

A base station configured for carrier aggregation, includes: a receiver; and processing circuitry coupled to the receiver and configured to: allocate to a user equipment uplink resources for at least one activated serving cell configured with an uplink carrier, the uplink resources for new transmission and the allocated uplink resources may accommodate a power headroom report, and obtain, responsive to the allocated uplink resources, a configured maximum output power for an activated serving cell configured with an uplink carrier, where the activated serving cell has non-adaptive retransmission of uplink data, or the activated serving cell where the base station schedules channel state information but no allocated uplink grant for transmitting data of an uplink shared channel.. .
Fujitsu Limited

User apparatus, base station, and carrier aggregation control method

A user apparatus in a mobile communication system supporting carrier aggregation includes a measurement unit configured to measure a reception timing difference between component carriers; an information notification unit configured to notify the base station of information on the reception timing difference measured by the measurement unit; and a control unit configured to perform addition or deletion of a secondary cell in the carrier aggregation based on an instruction from the base station that receives the information.. .
Ntt Docomo, Inc.

Pooled resource carrier aggregation

A wireless communication system having pooled carrier aggregation, according to one aspect of the present invention, includes a multi-sector cell site having a plurality of primary cells and at least one secondary cell. Each of the primary cells has a primary cell coverage area.
Commscope Technologies Llc

Cyclic redundancy check for uplink control information on control and data channels

Methods, systems, and devices are described for wireless communication. One method includes identifying uplink control information (uci) for a component carrier (cc) of a carrier aggregation (ca) configuration which may include a primary cell (pcell) and, in some aspects, a physical uplink control channel (pucch) enabled secondary cell (scell); determining to include cyclic redundancy check (crc) information for the uci based at least in part on a uci characteristic or an uplink control channel format; and transmitting an uplink channel comprising the uci and the crc information..
Qualcomm Incorporated

Wireless access node and signaling aggregation of a plurality of ue devices through a hub ue device

A wireless communication network aggregates wireless network control signaling through a hub user equipment (ue) using carrier aggregation (ca). The wireless access node selects the hub ue and directs the hub ue to aggregate the wireless network control signaling for other ues by using ca traffic channels with the wireless access node.
Sprint Communications Company L.p.

Inter-operability test indication for uplink-downlink configuration combinations for primary cell and secondary cell for wireless networks using carrier aggregation

A technique is provided to control transmitting, by a mobile station (ms) that uses carrier aggregation, a message including an interoperability test (iot) indication for one or more uplink-downlink (ul-dl) configuration combinations of time-division-duplex (tdd) radio frames for use by a primary cell and a secondary cell. In one example implementation, an iot indication may be provided for one or more (or each) uplink-downlink configuration combinations (e.g., one iot indication per ul-dl configuration combination).
Nokia Solutions And Networks Oy

Device, network, and wideband lte with virtual (baseband) carrier aggregation

Methods for wireless communications over a wideband carrier are provided. Time-frequency resources of the wideband carrier within a transmission time interval are divided into multiple time-frequency resource blocks.
Futurewei Technologies, Inc.

Method and reporting channel status in cellular radio communication system

A method and an apparatus for reporting channel status in a cellular radio communication system are disclosed. In a communication system supporting a carrier aggregation of a component carrier to which an fdd scheme is applied and a component carrier to which a tdd scheme is applied, a base station identifies a tdd uplink-downlink configuration of a tdd primary cell, and configures a csi transmission period of an fdd secondary cell according to the tdd uplink-downlink configuration.
Samsung Electronics Co., Ltd.

User equipment, base station and uplink carrier aggregation communication method

One aspect of the present invention relates to user equipment having an uplink carrier aggregation function, comprising: a radio communication control unit configured to control radio communication with a base station; a radio positioning unit configured to perform a radio positioning function based on a radio signal received from a positioning system; and a radio positioning state reporting unit configured to report, when uplink carrier aggregation is configured, activation or deactivation of the radio positioning function to the base station.. .
Ntt Docomo, Inc.

User equipment and transmission control method

User equipment for transmitting an uplink control channel in multiple cells simultaneously in a radio communication system where transmission of the uplink control channel in a secondary cell is supported is disclosed. One aspect of the present invention relates to the user equipment, comprising: a transmission and reception unit configured to transmit and receive a radio channel to/from a base station via multiple cells configured for carrier aggregation; a simultaneous transmission availability determination unit configured to determine, in response to occurrence of an event where an uplink control channel is to be transmitted in the multiple cells simultaneously, whether the uplink control channel can be transmitted in the multiple cells simultaneously; and a transmission control unit configured to instruct the transmission and reception unit to transmit the uplink control channel in the multiple cells simultaneously if the uplink control channel can be transmitted in the multiple cells simultaneously and control transmission of the uplink control channel in accordance with transmission priorities corresponding to cell types if the uplink control channel cannot be transmitted in the multiple cells simultaneously..
Ntt Docomo, Inc.

Systems and methods for carrier aggregation deployment and organization in unlicensed bands

Described herein are systems and methods for carrier aggregation deployment and organization in unlicensed bands. A method may comprise scanning, by a transceiver within a base station, channels in a band of interest, reporting, by the transceiver, signal measurement information to the base station, cell searching, by the transceiver, channels in the band of interest, determining channel information for neighboring each channel, and transmitting, by the transceiver, the channel information to the base station..
Apple Inc.

Identifying radio access technology (rat) coexistence conflicts using a priority-based mechanism

Methods, systems, and devices are described for wireless communication. A method may include maintaining a plurality of conflict entries, each conflict entry indicating a first frequency range associated with interference by a first radio access technology (rat) and a second frequency range associated with interference by a second rat.
Qualcomm Incorporated

Base station and processing method by base station

A base station including: a memory, and a processor coupled to the memory and configured to: wirelessly communicate with one or more terminals via a plurality of component carriers of carrier aggregation, and allocate each of the plurality of component carriers to each of the one or more terminals based on both of each number of terminals allocated to each component carrier and each wireless quality of each component carrier for each terminal.. .
Fujitsu Limited

Method for sending information regarding a secondary cell via a group message in a primary cell

A method in a network node for sending a message to a first group of wireless devices. The first group of wireless devices is served by a primary cell.
Telefonaktiebolaget Lm Ericsson (publ)

Measurement gaps in carrier aggregation

Methods, systems, and devices are described for wireless communication. A user equipment (ue) may signal a band-specific measurement gap indication based on the capability of a set of receivers to measure target frequency bands while monitoring a set of component carriers (ccs).
Qualcomm Incorporated

Configuration of network nodes

There is provided configuration of a secondary network node in a carrier aggregation enabled communications network the secondary network node supports radio transmission using a cellular radio access technology (rat) for deployment as a network node serving a secondary serving cell associated with a primary serving cell in a carrier aggregation enabled communications network using the cellular rat and a non-cellular rat for deployment as a network node serving a non-cellular rat hotspot using the non-cellular rat. After receiving an indication from a cellular primary network node associated with the primary serving cell the secondary network node starts scanning an unlicensed frequency band for deployment of the network node.
Telefonaktiebolaget Lm Ericsson (publ)

Configuration of cellular network nodes

There is provided configuration of a secondary cellular network node for a secondary serving cell associated with a primary serving cell in a carrier aggregation enabled communications network. The secondary cellular network node receives an indication from a primary cellular network node associated with the primary serving cell to start scanning an unlicensed frequency band for deployment of the secondary serving cell.
Telefonaktiebolaget Lm Ericsson (publ)

Base station, user apparatus, interference reduction control information notification method and interference reduction method

A base station configured to communicate with a user apparatus in a radio communication system executing carrier aggregation, including: a reception unit configured to receive, from an interference base station, control information that is used for the user apparatus to reduce an interference signal from the interference base station for a component carrier used by the user apparatus; a determination unit configured to determine whether a connecting cell corresponding to the component carrier and an interference cell formed by the interference base station satisfy a predetermined condition; and a transmission unit configured, when the determination unit determines that the connecting cell and the interference cell satisfy the predetermined condition, to transmit the control information to the user apparatus.. .
Ntt Docomo, Inc.

Resource management and computer storage medium

Disclosed are a resource management method and device and a computer storage medium. The method comprises: a node determining a resource management mode during carrier aggregation according to the type of a primary serving cell, and the node processing information according to the determined resource management mode..
Zte Corporation

User terminal, radio base station and radio communication method

The present invention is designed to implement dynamic tdd that does not rely on tdd-fdd ca-based tdd ul-dl configurations. A user terminal executes radio communication with a plurality of cells by employing carrier aggregation, and has a receiving section that, when a connection is established with a secondary cell serving as a dynamic tdd cell, receives control information, which is transmitted from a primary cell and which includes a dynamic command with respect to a subframe configuration of the dynamic tdd cell, and a control section that decides whether or not one or a plurality of subframes in the dynamic tdd cell are uplink subframes or downlink subframes based on the control information, and, furthermore, controls operations pertaining to the dynamic tdd cell..
Ntt Docomo, Inc.

Data transmission method, device, and system

The present invention provides a data transmission method, device, and system, and relates to the communications field, which can improve data transmission efficiency. The method includes: determining, by a second base station, that statuses of all harq processes in a first hybrid automatic repeat request harq buffer are occupied states; and sending, by the second base station, a second data block to a user equipment ue by using an harq process in an idle state in a second harq buffer, where the first harq buffer and the second harq buffer are different harq buffers disposed in the second base station.
Huawei Technologies Co., Ltd.

Method for transmitting and receiving a signal, and apparatus therefor

A method and a user equipment (ue) for transmitting an uplink (ul) signal in a wireless communication system supporting carrier aggregation are discussed. The ue is configured with a plurality of cells.
Lg Electronics Inc.

Antenna switching system and method

The present invention is applicable to the field of mobile terminals and provides an antenna switching system and method. The antenna switching system includes a radio-frequency transceiver circuit, a primary antenna, and a parasitic antenna, where the primary antenna is connected to the radio-frequency transceiver circuit, and further includes a switch circuit, configured to connect, when the parasitic antenna is used to receive or send a radio-frequency signal, the parasitic antenna and the radio-frequency transceiver circuit.
Huawei Device Co., Ltd.



Carrier Aggregation topics:
  • Carrier Aggregation
  • Base Station
  • Sounding Reference Signal
  • Relay Node
  • Scheduling
  • Channel Status
  • Carrier Frequency
  • Communication System
  • Automatic Repeat Request
  • Transmitter
  • Extension Carrier
  • Downlink Control Information
  • Radio Resource Control
  • Heterogeneous
  • Heterogeneous Network


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    This listing is a sample listing of patent applications related to Carrier Aggregation for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Carrier Aggregation with additional patents listed. Browse our RSS directory or Search for other possible listings.


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