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Carrier Aggregation patents



      
           
This page is updated frequently with new Carrier Aggregation-related patents. Subscribe to the Carrier Aggregation RSS feed to automatically get the update: related Carrier RSS feeds.

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Date/App# patent app List of recent Carrier Aggregation-related patents
04/17/14
20140106764
 Dynamic carrier assignment of carrier aggregation in an lte-advanced system patent thumbnailnew patent Dynamic carrier assignment of carrier aggregation in an lte-advanced system
Various embodiments of a scheme of dynamic activation and release of carrier aggregation in an lte-advanced system are provided. When transmission need of an lte-advanced user is large and the user is within coverage of at least one secondary component carrier, carrier aggregation is activated while a certain amount of resource of each component carrier is preserved to support carrier aggregation.
04/17/14
20140106693
 Power management configuration for tx mimo and ul carrier aggregation patent thumbnailnew patent Power management configuration for tx mimo and ul carrier aggregation
A communication device is disclosed that efficiently manages power. In one embodiment, this communication device includes a first (main) transmitter including a first low band amplifier and a first high band amplifier; a second (mimo) transmitter including a second low band amplifier and a second high band amplifier; a first power manager in communication with the first low band amplifier and with the second high band amplifier; a second power manager in communication with the first high band amplifier and with the second low band amplifier; and a control system in communication with the first transmitter, the second transmitter, the first power manager, and the second power manager..
04/17/14
20140105166
 Mobile station apparatus, management method in a mobile station apparatus, processing section, base station apparatus and communication system patent thumbnailnew patent Mobile station apparatus, management method in a mobile station apparatus, processing section, base station apparatus and communication system
A communication system that includes at least a terminal apparatus and a base station apparatus. The terminal apparatus communicates with a base station apparatus by carrier aggregation using a plurality of serving cells, wherein each serving cell of the plurality of serving cells has a different frequency.
04/17/14
20140105152
 Method and system for transmitting physical random access channel patent thumbnailnew patent Method and system for transmitting physical random access channel
The disclosure discloses a method and system for transmitting a physical random access channel (prach). The method includes: in a carrier aggregation (ca) scenario, a base station transmits, in a primary serving cell (pcell) or a secondary serving cell (scell), a random access trigger message to a user equipment (ue) (401); the ue transmits, in the scell, a prach (402); and the base station transmits, in the pcell or an scell, a random access procedure message to the ue (403).
04/17/14
20140105141
 Controlling uplink power patent thumbnailnew patent Controlling uplink power
The disclosure is related to multiplexing an uplink channel and an uplink reference signal transmitted on uplink, and controlling an uplink power, in user equipment in the case of carrier aggregation.. .
04/17/14
20140105130
 Controlling uplink power patent thumbnailnew patent Controlling uplink power
The disclosure is related to multiplexing an uplink channel and an uplink reference signal transmitted on uplink, and controlling an uplink power, in user equipment in the case of carrier aggregation.. .
04/17/14
20140105079
 Dual swapping switches to meet linearity demands of carrier aggregation patent thumbnailnew patent Dual swapping switches to meet linearity demands of carrier aggregation
Antenna switch structures having dual switches for swapping high band main and diversity signals and low band main and diversity signals on multiple antennas, including dual-band antennas. Related systems and devices are also described..
04/10/14
20140098661
 Carrier selection policy for joint scheduling for carrier aggregation in an lte-advanced system patent thumbnailCarrier selection policy for joint scheduling for carrier aggregation in an lte-advanced system
Various embodiments of a semi-joint scheduling algorithm for carrier aggregation in an lte-advanced system are provided. The proposed semi-joint scheduling algorithm combines the advantages of independent scheduling and joint scheduling while avoiding the respective shortcomings, and provides a technical foundation for a wide adoption of the carrier aggregation technology.
04/03/14
20140092865
 Transmission of uplink control information in inter-enb carrier aggregation patent thumbnailTransmission of uplink control information in inter-enb carrier aggregation
A user equipment (ue) for communication in a wireless network supporting inter-eutran node b (enb) carrier aggregation has a receiver to communicate with a first enb corresponding to a primary cell (pcell) in the wireless network and a second enb corresponding to a secondary cell (scell) in the wireless network. The receiver is configured to receive downlink data through a physical downlink shared channel (pdsch) in the scell.
04/03/14
20140092856
 Method for transmitting control information and apparatus for same patent thumbnailMethod for transmitting control information and apparatus for same
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting uplink channel state information (csi) in a wireless communication system that supports carrier aggregation, and to an apparatus for the method.
04/03/14
20140092844
Carrier selection method for positioning measurement, positioning measurement method, positioning processing apparatus, and terminal
And selecting an optimal carrier supported by each base station from the carriers supported by the terminal, so that the terminal performs positioning measurement according to the optimal carrier. The present invention also provides a positioning measurement method, a positioning processing apparatus, and a terminal.
04/03/14
20140092825
Handling band combinations with reduced performance in carrier aggregation
Techniques are disclosed for identifying carrier-aggregation band combinations that may be supported by a mobile terminal with limited performance. According to one example method, a mobile terminal sends (710) a band capability information element to the network (e.g., to a 3gpp enb).
04/03/14
20140092824
Hybrid automatic repeat request (harq) mapping for carrier aggregation (ca)
Technology for conditional hybrid automatic retransmission re-quest (harq) mapping for carrier aggregation (ca) is disclosed. One method can include a user equipment (ue) determining when a subframe for physical downlink shared channel (pdsch) transmission is configured for downlink semi-persistent scheduling (sps).
04/03/14
20140092812
Method and apparatus for applying a time alignment timer in a wireless communication system using a carrier aggregation technique
Operation of a terminal for determining which time alignment timer is applied to a certain condition when specific timers operate for each carrier-wave group in the event a wireless communication system using carrier aggregation techniques. A terminal performs communication without malfunctions using a timer suitable for a certain condition.
04/03/14
20140092795
Tunable diplexer for carrier aggregation applications
A tunable diplexer includes a high pass filter, a low pass filter, a high band port, a low band port, and an antenna port. The high pass filter is adapted to pass high band signals falling within a high pass band between the high band port and the antenna port, while attenuating signals outside of the high pass band.
04/03/14
20140092794
Method for transmitting and receiving a signal, and apparatus therefor
The present invention relates to a wireless communication system. Specifically, a method for transmitting an uplink signal in a wireless communication system supporting carrier aggregation includes the steps of: setting a first cell of a first time division duplex (tdd) uplink (ul)-downlink (dl) configuration, and a second cell of a second tdd ul-dl configuration; receiving data over a dl subframe of the first cell; and transmitting a control signal over a ul subframe of the second cell in response to the received data, wherein a relationship of the dl subframe and ul subframe is determined by parameter values set in a specific tdd ul-dl configuration in a tdd wl-dl configuration set, the specific tdd ul-dl configuration has the minimum number of dl subframes from among one or more of tdd ul-dl configurations in which subframes set as a dl or x are all set as the dl in the first cell or the second cell, the subframes set as x have different subframe directions in the first cell and the second cell at a corresponding subframe timing, and the uses thereof are limited in either the first cell or the second cell..
04/03/14
20140092789
Phich-less operation for uplink-downlink configuration zero
Various communication systems may benefit from techniques for handling inter-band carrier aggregation (ca). For example, systems of the third generation partnership project (3gpp) long term evolution (lte) advanced (lte-a) may benefit from a uplink (ul) downlink (dl) configuration zero handling, particularly in cases where there is no physical hybrid automatic repeat request (harq) indicator channel (phich).
04/03/14
20140092787
Periodic channel state information reporting for time division duplex (tdd) carrier aggregation systems
Technology for periodic channel state information (csi) reporting is disclosed. One method can include a user equipment (ue) identifying a configured csi reporting instance for a secondary cell to report the periodic csi to a node based on a csi reporting configuration of the secondary cell.
04/03/14
20140092786
Hybrid automatic repeat request (harq) mapping for carrier aggregation (ca)
Technology to dynamically alter hybrid automatic retransmission re-quest (harq) mapping for carrier aggregation (ca) is disclosed. In an example, a user equipment (ue) operable to dynamically alter hybrid automatic retransmission re-quest (harq) mapping for carrier aggregation (ca) can include computer circuitry configured to: determine a secondary harq bundling window size for a secondary cell (scell), when a primary harq bundling window size for a primary cell (pcell) is zero; determine a physical uplink control channel (pucch) resource for transmission of a harq-acknowledge (ack) feedback using the secondary harq bundling window size; and transmit the harq-ack feedback in the pucch resource..
04/03/14
20140092785
Methods and apparatus for enabling further l1 enhancements in lte heterogeneous networks
A network element in a first cell in a wireless telecommunication network is provided. The network element comprises a processor configured such that the network element provides uplink and downlink grants in the first cell, wherein the first cell is a low-power cell within the coverage area of a second, high-power cell, and wherein the first cell acts as a secondary cell and the second cell acts as a primary cell in a carrier aggregation mode, and wherein at least one uplink control signal is received by one of only the first cell or both the first cell and the second cell..
04/03/14
20140092758
Processing for a carrier according to a carrier type
A mobile device receives information relating to a first carrier of a first type, where the information is received from a network node in a wireless access network that supports carrier aggregation that includes the first carrier of the first type and at least another carrier of a second, different type. The mobile device uses the information to perform processing relating to the first carrier of the first type or a cell of the first type..
03/27/14
20140086118
Discontinuous reception for carrier aggregation
Methods and apparatuses for carrier aggregation with discontinuous reception is disclosed. At least two different time division duplexing configurations can be communicated from serving cells to a device, the subframes of the at least two different configurations being counted for purposes of operating at least one timer function according to a predefined rule of counting.
03/27/14
20140086117
Control signalling in carrier aggregation system
There is provided a timing entity for a communication network which includes a base station and a user equipment capable of communicating with each other over at least two carriers which have different temporal configuration of its uplink and downlink resources. The timing entity includes a control entity adapted for determining timing data defining a timing of a control signalling transmission which is related to a data transmission on a first carrier and which uses a resource of a first type on the second carrier.
03/27/14
20140086094
Terminal measurement configuration in carrier aggregation
There are provided measures for terminal measurement configuration in carrier aggregation, said measures exemplarily comprising a configuration of one or more carriers for automatic terminal measurements relating to network performance on said one or more carriers, said one or more carriers being carriers in a carrier aggregation for one or more terminals, wherein said configuration may comprise at least one condition. According to such configuration, automatic terminal measurements may be performed simultaneously on the configured one or more carriers or on the configured one or more carriers based on a predetermined priority of each carrier.
03/27/14
20140086078
Method and apparatus for supporting hybrid carrier aggregation
A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus, e.g., base station, determines a plurality of component carriers configured for a user equipment (ue) served by the apparatus.
03/20/14
20140080477
Method for terminal transmitting/receiving signal in base station coordination wireless communication system, and apparatus for same
In the present invention, a method for a terminal transmitting/receiving a signal with a plurality of transmission points in a wireless communication system is disclosed. More particularly, the method comprises the steps of: receiving carrier aggregation (ca) setting information and a signal related to a fake-carrier aggregation (ca) for applying the ca settings from a main transmission point from the transmission points; and transmitting the signal through each of the plurality of transmission points and a single carrier, wherein the information included in the fake-ca signal includes information related to whether to activate an uplink and a downlink of each of the plurality of transmission points..
03/20/14
20140079015
Multiplexing method for signals related to a plurality of terminals in a wireless communication system applying carrier aggregation techniques and apparatus therefor
The present description discloses a method for transmitting an uplink signal through a non-licensed band from a terminal in a wireless communication system by applying carrier aggregation techniques. More specifically, the method is characterized by comprising the steps of: receiving an uplink scheduling grant from a base station; determining the availability of a non-licensed band; transmitting a signal for reserving resources if a non-licensed band is available; and transmitting an uplink signal to the base station via the non-licensed band on the basis of the uplink scheduling grant..
03/20/14
20140078989
Method and apparatus for improving inter-enb carrier aggregation in a wireless communication system
A method and apparatus are disclosed for operating a wireless communication system by receiving a request message transmitted from a first network node to a second network node to request carrier aggregation to aggregate a cell controlled by the second network node to a user equipment (ue), the request message including a radio network temporary identifier (rnti) of a ue, and transmitting an accept message or a reject message from the second network node to the first network node to indicate whether to accept or reject carrier aggregation.. .
03/20/14
20140078974
Power control for simultaneous transmission of ack/nack and channel-state information in carrier aggregation systems
Channel-state information and hybrid-arq ack/nack information for multiple carriers are simultaneously transmitted using a pucch format 3 structure, where the hybrid-arq ack/nack bits and csi bits are separately encoded and interleaved. In an example method, a power control offset parameter is calculated (2110) as a linear combination of at least a number n, representing a number of channel-state information bits and a number m, representing a number of hybrid-arq ack/nack bits.
03/20/14
20140078965
Dynamic buffer status report selection for carrier aggregation
In one exemplary aspect of this invention a method includes buffering data in a user equipment and, in response to an amount of buffered data exceeding a threshold value, triggering the generation of a buffer status report and the sending of the buffer status report to a network access node, where the threshold value is a function of the capacity of a currently allocated uplink data transmission resource and some certain amount of time. In another exemplary embodiment the triggering of the generation of the buffer status report and the sending of the buffer status report to a network access node occurs when an amount of buffered data in a buffer of a particular logical channel group exceeds a maximum value associated with one of a plurality of buffer status report tables that is currently in use..
03/20/14
20140078944
Method for transmitting control information and apparatus therefor
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting uplink control information in a wireless communication system that supports carrier aggregation and operates in a tdd system, and to an apparatus therefor.
03/20/14
20140078942
Transmitting and receiving uplink control channel
The disclosure is related to transmitting a control channel, multiplexing an uplink control channel, and multiplexing a sounding reference signal for user equipment configured with carrier aggregation.. .
03/13/14
20140072001
Carrier aggregation receiver architecture
A receiver architecture for carrier aggregation is disclosed. In an exemplary design, an apparatus (e.g., a wireless device, a circuit module, etc.) includes a plurality of low noise amplifiers (lnas), a plurality of switches, and at least one downconverter.
03/13/14
20140071937
Method, system, access point and computer program product for enhancing the usable bandwidth between of a telecomunications network and a user equipment
A method for enhancing usable bandwidth between an access point of a radio access network of a telecommunications network and a user equipment of a subscriber of the telecommunications network, in which the user equipment and the access point are configured to mutually communicate based on a standardized mobile communication technology using carrier aggregation of at least a first communication carrier having a first carrier frequency and a second communication carrier having a second carrier frequency. The first carrier frequency is a standardized and licensed frequency and is related to the standardized mobile communication technology.
03/13/14
20140071932
Method and apparatus for transmitting ack/nack information
The present invention is provided a method for transmitting ack/nack information. The method is applicable for a situation that uplink-downlink configurations of multiple component carriers (ccs) of a carrier aggregation (ca) are different.
03/13/14
20140071931
Method and device for transmitting control information in wireless communication system
The present invention relates to a wireless communication system and, more particularly, to a method and a device for transmitting control information. The wireless communication system supports carrier aggregation (ca).
03/13/14
20140071908
Methods and devices for component carrier aggregation control
In a communication system using aggregation of component carriers, a transmitter comprises a transmitting entity configured to transmit data messages on multiple component carriers. The transmission of the data messages is accomplished on the basis of a retransmission protocol.
03/13/14
20140071862
Uplink transmission method and apparatus in inter-enb inter-duplex carrier aggregation system
A method and apparatus are provided for transmitting uplink signals including feedback for use in scheduling at different evolved node bs (enbs) without intermodulation interference, especially in cases where the user equipment (ue) is connected to an inter-duplex inter-enb system in which the cooperation between enbs is very slow or non-existent.. .
03/13/14
20140071860
Setting timers when using radio carrier aggregation
The present invention relates to a method of a user equipment (ue) using discontinuous reception (drx) and time division duplex (tdd) carrier aggregation of at least a first and a second cell, the first cell 501 having an ul-dl configuration of uplink (ul) and downlink (dl) subframes 503 which is different from such an ul-dl configuration of the second cell 502. The method comprises setting a first drx timer 505, the duration of which is dependent on ul-dl configurations of a plurality of aggregated cells, including the first and second cells, such that the duration of the first timer corresponds to a first number of subframes where at least one of the plurality of aggregated cells has a dl subframe.
03/06/14
20140064205
Search space for uplink grant in an aggregated-carrier mobile communication system
The present invention relates to transmitting and receiving of control information in a system supporting carrier aggregation. A search space for control information is configured in such a way that at least two search spaces determined by respective component carriers are on a first slot of a subframe and a further search space determined by a further component carrier is on a second slot, wherein at least one candidate of search spaces in the first slot is mapped in a same resource block pair with at least one candidate of a search space in the second slot..
03/06/14
20140064170
Method for controlling power in a wireless communication system adopting a carrier aggregation technique, and apparatus for same
The present application discloses a method in which a terminal transceives a signal to/from a base station in a wireless communication system adopting a carrier aggregation technique. More particularly, the method comprises: a step of receiving a wake-up message for a sub-component carrier which is in an idle state from said base station via a main component carrier; a step of starting to monitor said sub-component carrier after receiving said wake-up message; and a step of receiving a downlink signal from said base station or transmitting an uplink signal to said base station via said sub-component carrier..
02/27/14
20140056273
Method and device for transmitting uplink control information having large payload in wireless access system
The present invention relates to a method and devices for transmitting uplink control information (uci) having a large payload size in a carrier aggregation environment. The method for transmitting the uci having a large sized payload in a wireless access system, as an embodiment of the present invention, comprises the steps of: finding the number of first resource elements allocated to channel quality information (cqi) information to be included in the uci; finding the number of second resource elements allocated to a rank indicator (ri) information to be included in the uci; finding the coding rate of data transmitted with the uci, considering the number of the first resource elements and the number of the second resource elements; finding the number of third resource elements allocated to all of the uci, on the basis of the coding rate of the data; and multiplexing to a physical uplink shared channel (pusch) and sending to a base station the uci, on the basis of the number of the third resource elements..
02/27/14
20140056187
Method and apparatus for coding of harq-ack transmission in tdd systems with downlink carrier aggregation
Methods and apparatus are provided for a user equipment (ue) configured with multiple cells in a downlink (dl) of a time division duplex (tdd) communication system to determine the coding method for acknowledgement information bits as a function of their number, to apply bundling to the acknowledgement information bits when their number exceeds a first predetermined value, and to partition the acknowledgement information bits, possibly together with other control information bits, into two separate codewords when their total number exceeds a second predetermined value.. .
02/27/14
20140056184
Method for transmitting control information and apparatus for same
A wireless communication system is disclosed. A method for transmitting uplink control information in a wireless communication system supporting carrier aggregation and operating in tdd includes: generating a first harq-ack (hybrid automatic repeat request—acknowledgement) set for a first cell using a value m; generating a second harq-ack set for a second cell using the value m; and transmitting a bit value corresponding to a third harq-ack set including the first harq-ack set and the second harq-ack set in an uplink subframe n, wherein m=max(m1, m2), max(m1, m2) representing a value being equal to or larger than not smaller between m1 and m2, wherein m1 corresponds to the number of downlink subframes corresponding to the uplink subframe n in the first cell, and m2 corresponds to the number of downlink subframes corresponding to the uplink subframe n in the second cell, wherein the first cell and the second cell have different ul-dl configurations..
02/20/14
20140051427
Base station and control method thereof
A pico base station penb #1 in a mobile communication system that supports a carrier aggregation technology defined in a 3gpp standard, is configured to communicate with a macro base station menb via an x2 interface. The pico base station penb #1 transmits information to the macro base station menb, the information being used when the macro base station menb determines a component carrier that is limitedly used, or a component carrier which is released from use limitation..
02/20/14
20140050206
Method and apparatus for transmitting synchronization signal in carrier aggregation system
Provided is a method and an apparatus for transmitting a synchronization signal in a carrier aggregation system. The method comprises: transmitting via a first serving cell a synchronization signal setting information with regard to a second serving cell; and transmitting the synchronization signal via the second serving cell, wherein the synchronization signal is variably set by means of the synchronization signal setting information..
02/20/14
20140050194
Multiple timing advance groups (tags) for ul carrier aggregation (ca)
Techniques are provided for assigning aggregated component carriers. For example, a method may include receiving from a user equipment (ue) a set of rules associated with timing advance groups (tags) comprising allowable combinations of frequency bands.
02/20/14
20140050186
Method and apparatus for adjusting transmission timing in wireless access system supporting carrier aggregation
The present disclosure provides methods for allocating a timing advance (ta) value, which is used in a wireless access system supporting carrier aggregation (ca), methods for adjusting a wireless frame transmission time using the ta value, and apparatuses for supporting same. The method for adjusting the transmission timing in the wireless access system supporting carrier aggregation, according to one embodiment of the present disclosure, comprises the following steps: receiving a physical downlink control channel (pdcch) signal including a reservation bit (for example, a service cell indicator) for indicating at least one serving cell; receiving a media access control (mac) message including the ta value on an uplink wireless frame; and transmitting an uplink signal by applying the ta value from a serving cell indicated by the reservation bit..
02/20/14
20140050184
Base station and control method thereof
A pico base station penb #1 in a mobile communication system that supports a carrier aggregation technology defined in a 3gpp standard, communicates with a macro base station menb via an x2 interface. The pico base station penb #1 requests the macro base station menb to limit use of a component carrier or to release the component carrier from the use limitation..
02/20/14
20140050139
Communication units and methods for control channel change notification in broadcast communication system supporting carrier aggregation
A method supporting control channel change notification for at least one wireless communication unit capable of operating on a first serving communication cell and configured with access to at least one second serving communication cell in a wireless broadcast communication system. The method includes, at a broadcast server: supporting communication with at least one wireless communication unit via the at least one second serving communication cell; generating a message including an indication that a control channel change notification will be sent in the at least one first serving communication cell; transmitting the message to the at least one wireless communication unit operational in the at least one second serving communication cell; and transmitting the control channel change notification in the first serving communication cell..
02/20/14
20140050130
Method for transmitting/receiving data in wireless communication system and base station for same
In the present invention, a method for transmitting/receiving data in a wireless communication system supporting carrier aggregation/multiple cells and a base station for same are disclosed. More particularly, the method comprises: receiving from the e node b through a physical downlink control channel (pdcch) of a first cell resource allocation information, which is set as a flag value indicating uplink resource allocation information, when performing cross-cell scheduling on a second cell through a first cell, according to an uplink-downlink configuration of the first cell from a plurality of cells which are set to a user equipment; determining the resource allocation information as a downlink resource allocation information, when the resource allocation information is received from a subframe perspective in which an uplink transmission time is not defined, based on the uplink-downlink configuration of the second cell; receiving the uplink resource allocation information from the e node b via a physical downlink shared channel (pdsch), according to the downlink resource allocation information; and transmitting to the e node b via a physical uplink shared channel (pusch) of the second cell uplink data, according to the uplink resource allocation information..
02/13/14
20140044105
Td lte secondary component carrier in unlicensed bands
A method is provided for communication in a wireless telecommunication system. The method comprises adaptively designating, by a network element following a frame-based communication protocol, for use as a secondary component carrier in a carrier aggregation scheme, at least a portion of radio resources on an unlicensed band..
02/13/14
20140044087
Base station and control method thereof
A macro base station menb in a mobile communication system that supports a carrier aggregation technology defined in a 3gpp standard, communicates with a pico base station penb #1 via an x2 interface. The macro base station menb transmits information to the pico base station penb the information being used when the pico base station penb determines a component carrier requested to be limitedly used by the macro base station menb or a component carrier requested to be released from use limitation by the macro base station menb..
02/13/14
20140044086
Base station and control method thereof
A base station menb in a mobile communication system that supports a carrier aggregation technology defined in a 3gpp standard is configured to communicate with pico base stations penb #1 and penb #2 via an x2 interface. The base station menb notifies the base station s penb#1 and penb#2 of a component carrier subject to use limitation by the base station, or a component carrier released from the use limitation..
02/13/14
20140044083
Method for transmitting channel state information in wireless access system and terminal therefor
Disclosed is a method for transmitting channel state information (csi) in a wireless access system supporting carrier aggregation/multiple cells and a terminal therefor. Specifically, the method comprises the steps of: if a collision occurs between starting points of periodic csi reports for first and second cells, calculating the number of resource elements using the biggest bit size among csi bit sizes for first and second cells; adjusting the bit of the csi with the highest priority among the csis of the first and second cells to match the biggest bit size; transmitting, to the base station, the adjusted bits of the csi with the highest priority, which have been mapped to the calculated resource element..
02/13/14
20140044068
User equipment and base station in carrier aggregation system, and call admission control method for use with the user equipment and base station
Disclosed are user equipment and a base station in a carrier aggregation system, and a call admission method thereof. The user equipment includes a plurality of physical layers, and the base station provides multiple component carriers.
02/13/14
20140044063
Method for reducing transmission power and terminal thereof
There is provided a method of reducing transmission power. The method may comprise: receiving a network signal, if a carrier aggregation (ca) is configured and if the configured ca corresponds to an intra-band contiguous ca; applying an additional maximum power reduction (a-mpr) for a transmission, based on the network signal.
02/13/14
20140044025
Method and apparatus for transmitting harq-ack
An apparatus and a method are provided for transmitting a hybrid automatic repeat request acknowledgement (harq-ack) in a time division duplexing (tdd) carrier aggregation (ca) system, wherein the duplex direction of a sub frame may change flexibly. According to the method, a ue receives configuration information from a base station for each cell working under a ca mode; determines a distribution of fixed sub frames and flexible sub frames in each cell; determines timing of a harq-ack for downlink transmission in each cell; and transmits the harq-ack, based on the determined timing of the harq-ack for each cell..
02/13/14
20140044000
Lte carrier aggregation configuration on tv white space bands
An apparatus, method and computer program product comprise controlling cellular network based communication in a primary cell on a frequency band related to the cellular network and by using an uplink and downlink configuration specific to the primary cell; controlling communication in a secondary cell on a frequency band related to a television white space channel and by using an uplink and downlink configuration specific to the secondary cell; measuring radio interference on a temporarily set uplink related carrier on the secondary cell based on information on the temporarily set uplink related carrier received on a downlink related carrier on the primary cell; and reporting results of radio interference measurement via the primary cell.. .
02/13/14
20140043979
Opportunistic carrier aggregation for dynamic flow switching between radio access technologies
Systems and methods for opportunistic cross radio access technology (rat) bandwidth allocation are disclosed. The system comprises wireless wide area network (wwan) radio configured to be used as a primary cell (pcell) to communicate with a dual mode mobile wireless device on a licensed band and a wireless local area network (wlan) radio integrated with the wwan radio and configured to be used as a secondary cell (scell) to provide additional wireless connectivity to the dual mode mobile wireless device in an unlicensed band that is controlled by the pcell.
02/13/14
20140043955
Carrier aggregation in wireless communication systems
Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource..
02/06/14
20140036879
Method and apparatus for configuring transmission of a power headroom report in carrier aggregation systems
A method, apparatus and computer program product are provided that may support power headroom reporting in conjunction with carrier aggregation, such as the secondary cell(s) of a network that supports carrier aggregation. A method, apparatus and computer program product may be configured to receive a command from a primary cell indicating that a connection with a secondary cell is to be activated, receive scheduling information for the secondary cell and cause a power headroom report including actual power headroom parameters, such as at least one of actual power headroom or pcmax, to be provided no later than in conjunction with an initial transmission following activation of the secondary cell..
02/06/14
20140036856
Apparatus and method for transceiving a control signal in a communication system
A method and an apparatus for transmitting a hybrid automatic repeat request (harq) acknowledgement (ack)/negative acknowledgment (nack) signal and a scheduling request (sr) over an identical uplink subframe by a user equipment in a time division duplex (tdd) system in a carrier aggregation environment is disclosed. An example of a method for transmitting a harq ack/nack signal and an sr includes: receiving an allocation of a plurality of sr physical uplink control channel (pucch) resources; and transmitting a harq ack/nack signal using the plurality of sr pucch resources..
02/06/14
20140036844
Power control for ack/nack formats with carrier aggregation
A system and method for determining a physical uplink control channel (pucch) power control parameter h(ncqi,nharq) for two carrier aggregated (ca) pucch formats—pucch format 3 and channel selection. The value of h(ncqi,nharq) may be based on only a linear function of nharq for both of the ca pucch formats.
02/06/14
20140036828
Extending physical downlink control channels
Methods and apparatuses for transmitting and receiving at least one downlink control information (dci) in a communication system supporting carrier aggregation (ca) are provided. The method for receiving includes receiving information representative of presence of carrier indicator by higher layer signaling from a node b; receiving information representative of at least one cell indicator by higher layer signaling from the node b; defining an ue specific search space based on aggregation level, an ue id, and at least one carrier indicator value, where the ue specific search space includes a set of physical downlink control channel (pdcch) candidates based on the aggregation level; decoding at least one pdcch including at least one dci respectively by the ue id; and acquiring the at least one dci, wherein the at least one carrier indicator value is based on the at least one cell indicator..
02/06/14
20140036818
Signaling method to enable controlled tx deferring in mixed license and unlicensed spectrum in carrier aggregation in future lte-a networks
The present invention discloses a signaling method, an apparatus and a computer program for controlled transmission signal deferring utilizing both licensed and unlicensed frequency bands for carrier aggregation. In the method, a connection is established between a user equipment and a base station.
02/06/14
20140036749
Carrier aggregation acknowledgement bits
Systems, methods, and user equipment can involve transmitting acknowledgement/negative acknowledgement (ack/nack) bits for carrier aggregation between a first cell and a second cell in a user equipment (ue). With the ue, for a sub-frame, a first number of ack/nack bits for the first cell can be compared with a second number of ack/nack bits for the second cell.
02/06/14
20140036742
Method and apparatus for providing for discontinuous reception via cells having different time division duplex subframe configurations
Methods and apparatus are disclosed that facilitate discontinuous reception via a primary cell and one or more secondary cells that have different tdd ul/dl subframe configurations including overlapping subframes, such as in an instance in which a ul subframe of a secondary cell overlaps with a corresponding dl subframe of the primary cell. A method may define an active state of a primary cell to be larger than an active state of a secondary cell in a tdd network that supports carrier aggregation.
02/06/14
20140036740
Method and device for setting backhaul link subframe in wireless communication system having carrier aggregation technique applied thereto
Disclosed in the present invention is a method for a base station to set a backhaul link subframe for a relay node in a wireless communication system, to which a carrier aggregation technique is applied. More particularly, the present invention comprises the steps of: determining one of the plurality of subframe settings as a first subframe setting for a main component carrier allocated to the relay node; composing subframe setting candidates for one or more subcomponent carriers allocated to the relay node, one the basis of the determined first subframe setting; and determining a second subframe setting for each of the one or more subcomponent carriers, using the composed subframe setting candidates, wherein a subframe aggregation according to the first subframe setting and subframe aggregations according to each of the subframe setting candidates do not overlap when downlink subframes and uplink subframes of the different component carriers are identical, and a downlink subframe aggregation according to the second subframe setting is included in a downlink subframe aggregation according to the first subframe setting..
02/06/14
20140036704
Periodic channel state information reporting for coordinated multipoint (comp) systems
Technology for periodic channel state information (csi) reporting from a user equipment (ue) configured for carrier aggregation is disclosed. One method can include the ue generating a plurality of periodic csi reports for transmission in a subframe for a plurality of csi processes, wherein each periodic csi report corresponds to a csi process with a csi process index.
01/30/14
20140029573
Method for transmitting control information in wireless communication system and device therefor
The present invention relates to a wireless communication system, more specifically to a method for transmitting control information and a device therefor. The wireless communication system can support carrier aggregation.
01/30/14
20140029565
Method for transmitting/receiving data in wireless access system, and base station and user equipment for same
The present invention discloses a method for transmitting/receiving data in a wireless access system supporting carrier aggregation/multiple cells, and a base station and a user equipment for same. More particularly, the method comprises the following steps: transmitting downlink control information through a physical downlink control channel (pdcch) for scheduling downlink data from a first subframe; and transmitting the downlink data, which is scheduled by the downlink control information from a second subframe, through a physical downlink shared channel (pdsch), wherein the downlink control information includes a field indicating the second subframe from which the downlink data is transmitted..
01/30/14
20140029558
Uplink control signalling in a carrier aggregation system
An apparatus is described which includes a transceiver configured to be connectable to a first network node by a first uplink connection and at least a second network node by a second uplink connection. Uplink control signalling is generated independently for each network node, wherein the generated uplink control signalling for the first network node is sent via the first uplink connection, and the generated uplink control signalling for the second network node is sent via the second uplink connection..
01/30/14
20140029545
Method for efficiently transmitting physical channel in multi-carrier aggregation state to support broadband
A method for receiving feedback information by a user equipment (ue) includes: receiving scheduling information from a base station through a first downlink component carrier linked with a first uplink component carrier; determining resources on a second uplink component carrier other than the first uplink component carrier using said scheduling information, wherein said scheduling information allows cross-carrier scheduling which schedules the resources on the second uplink component carrier; transmitting data to the base station through the determined resources on the second uplink component carrier; determining a phich (a physical hybrid arq indicator channel) resource to receive feedback information for the data transmitted on the second uplink component carrier, wherein the phich resource is predetermined as that of the first downlink component carrier in which the scheduling information was received; and receiving the feedback information from the base station through the determined phich resource.. .
01/30/14
20140029514
Method of efficient blind scell activation
An effective scell activation procedure is proposed to reduce the scell activation time. For carrier aggregation, a secondary cell (scell) needs to be configured and then activated before a ue can perform normal operation.
01/30/14
20140029489
Method and apparatus for defining harq functionality for cells having different time division duplex subframe configurations
Methods, apparatus and computer program products are provided for defining the harq functionality for primary and secondary cells having different tdd ul/dl subframe configurations so as to reduce or eliminate instances in which the feedback is blocked and the ul grant is missed. For example, a method is provided that includes providing for communications via a primary cell and at least one secondary cell in a time division duplex (tdd) network that supports carrier aggregation in accordance with different tdd uplink (ul)/downlink (dl) subframe configurations.
01/30/14
20140029484
Method and apparatus for transmitting control channel in intra-cell carrier aggregation system
A control channel transmission method and an apparatus for facilitating control channel transmission in an intra-cell carrier aggregation system by applying frequency division duplexing (fdd) cell's uplink control channel transmission timing for transmitting the uplink control channel corresponding to the tdd cells' downlink data are provided. The control channel transmission method and apparatus of the present disclosure are capable of transmitting/receiving data of the cells operating in the different duplexing modes simultaneously, resulting in improvement of peak data rate..
01/30/14
20140029440
Carrier aggregation testing method and apparatus for performing the same
A carrier aggregation testing method for a wireless communication system, includes the steps of allocating a primary component carrier between a user equipment and a carrier aggregation testing apparatus being configured to act as a base station with regard to the user equipment, allocating at least one functionally limited secondary component carrier between the user equipment and the carrier aggregation testing apparatus, aggregating the at least one functionally limited secondary component carrier with the primary component carrier, executing a carrier aggregation test being based on a functionality of the at least one functionally limited secondary component carrier.. .


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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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