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Power Headroom patents



      
           
This page is updated frequently with new Power Headroom-related patent applications. Subscribe to the Power Headroom RSS feed to automatically get the update: related Power RSS feeds. RSS updates for this page: Power Headroom RSS RSS


Power headroom reporting for carrier aggregation

Reporting power headroom for aggregated carriers

Date/App# patent app List of recent Power Headroom-related patents
09/11/14
20140254527
 Method and apparatus for transmitting information about available power of terminal in mobile communication system patent thumbnailMethod and apparatus for transmitting information about available power of terminal in mobile communication system
A method and apparatus are provided for transmitting power headroom information by a terminal in a mobile communication system. The method includes obtaining, by the terminal, an uplink transmission resource; obtaining, by the terminal, a path loss; and if the path loss is changed more than a threshold since a last transmission of a power headroom, obtaining power headroom information using a maximum transmission output of the terminal and a transmission power of the terminal, and transmitting the power headroom information using the uplink transmission resource..
08/28/14
20140241197
 Power headroom reporting for carrier aggregation patent thumbnailPower headroom reporting for carrier aggregation
Power headroom reporting and report handling are discussed in the context of a physical uplink shared channel (pusch), on which a user equipment (ue) has no valid uplink grant, and a physical uplink control channel (pucch) on which a ue has no transmission. Under these circumstances, it is not possible to directly calculate one or more parameters which are used to calculate power headroom.
08/21/14
20140233495
 Reporting power headroom for aggregated carriers patent thumbnailReporting power headroom for aggregated carriers
A method for reporting power headroom-related information for a plurality of aggregated carriers. The method includes reporting in a bitmap the power headroom-related information for a number of the aggregated carriers that is less than or equal to the total number of aggregated carriers, wherein the power headroom-related information is one of a power headroom for at least one of the aggregated carriers and a path loss for at least one of the aggregated carriers..
08/14/14
20140226516
 Indication of user equipment transmit power capacity in carrier aggregation patent thumbnailIndication of user equipment transmit power capacity in carrier aggregation
A method of power headroom reporting (phr) is proposed. A ue is configured with a plurality of component carriers (ccs) and is served by one or more power amplifiers (pas) in a wireless system with carrier aggregation.
08/07/14
20140221038
 Mobile station device, communication system, communication method, and integrated circuit patent thumbnailMobile station device, communication system, communication method, and integrated circuit
In a system including at least one base station device, the base station device efficiently controls uplink signals. A mobile station device includes a path loss calculation unit 4051 configured to calculate path losses, each based on one of a plurality of types of reference signals received by a reception processing unit 401, a transmit power setting unit 4053 configured to set a desired transmit power for an uplink signal using the path losses calculated by the path loss calculation unit 4051, and a power headroom control unit 4055 configured to generate a power headroom using the desired transmit power set by the transmit power setting unit 4053, the power headroom being information concerning transmit power to spare, and configured to control transmission of the power headroom.
08/07/14
20140219234
 Method for transmitting power headroom report, and apparatus for same patent thumbnailMethod for transmitting power headroom report, and apparatus for same
Disclosed are a method for transmitting a power headroom report (phr) and a terminal apparatus for same. The method for transmitting a phr from a terminal in a network, which includes a base station and at least one cooperative node performing cooperative communication with the base station, includes a step of determining a sounding reference symbol (srs) transmission power for transmitting srss in a specific serving cell, wherein the determined srs transmission power is a value determined for the transmission of the srss to a plurality of nodes including a first node corresponding to the base station and the at least one cooperative node..
08/07/14
20140219228
 Methods for power headroom reporting, resource allocation, and power control patent thumbnailMethods for power headroom reporting, resource allocation, and power control
Methods and apparatuses are provided for reporting power headroom for a ue. At least one of power control information associated with a pusch transmission in a subframe and power control information associated with a pucch transmission in the subframe is received.
08/07/14
20140219223
 Methods and apparatuses for enabling power back-off indication in phr in a telecommunications system patent thumbnailMethods and apparatuses for enabling power back-off indication in phr in a telecommunications system
The exemplary embodiments describe a method for use in a user equipment, a method for use in a radio base station; a user equipment and a radio base station. According to the exemplary embodiments, the user equipment is configured to decide on application or not of a power reduction and to indicate it decision in a power headroom report intended for transmission to the radio base station.
07/31/14
20140211738
 Method and apparatus for transmitting and receiving power headroom report in a wireless communication system patent thumbnailMethod and apparatus for transmitting and receiving power headroom report in a wireless communication system
The invention relates to a wireless communication system. A method for transmitting a power headroom report (phr) from a terminal according to an embodiment of the present invention may include determining whether a time alignment timer (tat) for a serving cell is operating; and transmitting, to a base station, a phr including only the phr on the serving cell in which the tat is operating..
07/24/14
20140206410
 Apparatus and method for transmitting power headroom information in a multi-carrier system patent thumbnailApparatus and method for transmitting power headroom information in a multi-carrier system
A method of transmitting a power headroom by a user equipment (ue) in a multi-carrier system. The method includes: receiving power determination information from a base station (bs); determining a maximum transmission power value for each of a plurality of serving cells by using the power determination information and a ue specific parameter; determining a power heaadroom (ph) for the each of the plurality of serving cells on the basis of the maximum transmission power value for each of a plurality of serving cells; and transmitting control information to the bs, the control information comprising the maximum transmission power value and the ph for the each of the plurality of serving cells, wherein the control information includes information that indicates a specific cell for which the maximum transmission power value and the ph are provided among the plurality of serving cells..
07/17/14
20140198765
Method and apparatus for multi-radio coexistence on adjacent frequency bands
Various methods for controlling an aggressor user equipment (ue) can use two transmission power control loops to mitigate ue-to-ue adjacent carrier frequency band interference to a geographically proximal victim ue. The aggressor ue can select between different transmission power parameters based on two (or more) power values.
06/26/14
20140177560
Method and apparatus of small cell enhancement in a wireless communication system
A method and apparatus are disclosed to provide small cell enhancement in a wireless communication system. The method includes connecting to more than one serving cell.
06/19/14
20140169206
Method and apparatus for selecting enhanced dedicated channel transport format combination in cell_fach state and idle mode
A method and apparatus for selecting an enhanced dedicated channel (e-dch) transport format combination (e-tfc) in cell_fach state and idle mode are disclosed. A wireless transmit/receive unit (wtru) transmits a random access channel (rach) preamble and receives an index to an e-dch resource in response to the rach preamble.
06/12/14
20140161081
Method and apparatus for power control
A power control method is provided, which is applicable to the communication field. The method includes: obtaining power headroom information of an aggregated carrier of a user equipment (ue), where the aggregated carrier includes at least one component carrier group and at least one first carrier, or includes at least one component carrier group, or includes at least two first carriers, the component carrier group includes at least two second carriers, and the first carrier and the second carrier are single carriers; and adjusting transmit power of the aggregated carrier according to the power headroom information.
05/29/14
20140146779
Methods for carrier aggregation
Methods to manage multiple component carriers (ccs) efficiently in a mobile network with carrier aggregation (ca) enabled are proposed. For cc activation/deactivation, a single lcid value is used to represent both activation and deactivation command.
04/17/14
20140106769
Interference coordination method and base station
Embodiments of the present invention provide an interference coordination method and a base station. The method includes determining interfering cell base stations and interference levels of the interfering cell base stations and receiving power coordination information sent by the interfering cell base stations.
02/27/14
20140056258
Method for configured maximum output power reporting and user equipment
A method for configured maximum output power reporting and user equipment including: judging sequentially by user equipment whether there exists non-adaptive retransmission of uplink data in each of serving cells, or judging whether a base station schedules only channel status information in each of serving cells and does not allocate an uplink grant to transmit data of an uplink shared channel when the user equipment triggers a power headroom report at a current subframe, the base station allocates an uplink grant to the user equipment for transmitting new data in an uplink shared channel, and the uplink grant is capable of containing the power headroom report; obtaining, if the result of judging is positive, by the user equipment, a configured maximum output power of the corresponding serving cell; and reporting the obtained configured maximum output power to the base station.. .
02/13/14
20140045543
Devices for allocating power for uplink transmission
A user equipment (ue) for allocating power for uplink transmission to an evolved node b (enb) is described. The ue includes a processor and memory that is in electronic communication with the processor.
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..
01/23/14
20140023010
Efficient extended power headroom reporting for semi-persistent scheduling
The invention relates to a method for transmitting power headroom information from a user equipment to the base station. The transmission is made dependent on scheduling type of the uplink resource, for which the power headroom information is to be calculated and over which it is to be transmitted.
01/16/14
20140018124
Apparatus and method for performing power headroom report
The present invention provides an apparatus and method for performing a power headroom report (phr) in a wireless communication system. A mobile station includes a trigger prohibition unit for measuring a primary prohibition timer and a secondary prohibition timer used to prohibit the trigger of the phr and for generating or prohibiting at least one of the trigger of a first phr based on the amount of a change in path loss and the trigger of a second phr based on the amount of a change in power backoff based on the state of the primary prohibition timer or the secondary prohibition timer and an uplink transmission unit for transmitting a medium access control message, including the phr, to a base station based on the trigger of the first phr or the trigger of the second phr..
12/19/13
20130336228
Method, system, and device for power headroom reporting and sub-frame scheduling
Embodiments of the invention relate to the field of wireless communications and particularly to a method of and apparatus for power headroom reporting so as to address such a problem in the prior art that ph information is reported for only an uplink subframe and the existing phr mechanism discourages subsequent scheduling in the case that there are different tdd ul/dl configurations for a plurality of configured and active cells aggregated for a user equipment. A method of power headroom reporting according to an embodiment of the invention includes: determining ph information of each of configured and active cells at a current instant if ph information is required to be reported, wherein the configured and active cells include a cell which is configured with a downlink subframe at the current instant; and reporting the determined ph information.
11/28/13
20130315167
Method for performing power headroom reporting procedure and phr mac control element
This invention relates to a method for performing power headroom reporting procedure, adapted for a user equipment, wherein the user equipment is operated in a plurality of activated serving cells, the method includes the steps of: providing a prohibitphr-timer; obtaining a plurality of downlink path loss values respectively corresponding to the activated serving cells; triggering a power headroom report when the prohibitphr-timer expires or has expired and at least one of the downlink path loss values has changed more than a pathlosschange threshold since the last transmission of a phr; and reporting the power headroom report.. .
11/14/13
20130301568
Method and apparatus for performing power headroom reporting procedure in wireless communication system
A method and apparatus for performing a power headroom reporting (phr) procedure in a wireless communication system is provided. A user equipment (ue) triggers at least one phr, and determines whether the triggered at least one phr is not cancelled.
11/14/13
20130301536
Apparatus and method of reporting power headroom in wireless communication system
A method and apparatus of reporting a power headroom in a wireless communication system is provided. A user equipment transmits a first power headroom report to a base station and starts a virtual power backoff timer upon transmitting the first power headroom report.
10/03/13
20130258980
Method and apparatus for controlling uplink power in a wireless access system
According to one embodiment of the present invention, a method for reporting power headroom in a user equipment of a multi-carrier system, includes receiving a physical downlink control channel (pdcch) signal comprising uplink resource allocation information from a base station; transmitting at least one of a physical uplink shared channel (pusch) signal and a physical uplink control channel (pucch) signal to the base station in a predetermined subframe based on the uplink resource allocation information in accordance with a transmission mode; calculating one or more power headroom values for the predetermined subframe in accordance with the transmission mode; and transmitting a report message comprising the one or more power headroom values to the base station, wherein the user equipment reports its first and second type power headroom values when operating in transmission mode a, or reports its first type power headroom value when operating in transmission mode b.. .
09/26/13
20130250890
Method and apparatus for controlling uplink power in a wireless access system
According to one embodiment of the present invention, a method for reporting power headroom in a user equipment of a multi-carrier system, includes receiving a physical downlink control channel (pdcch) signal comprising uplink resource allocation information from a base station; transmitting at least one of a physical uplink shared channel (pusch) signal and a physical uplink control channel (pucch) signal to the base station in a predetermined subframe based on the uplink resource allocation information in accordance with a transmission mode; calculating one or more power headroom values for the predetermined subframe in accordance with the transmission mode; and transmitting a report message comprising the one or more power headroom values to the base station, wherein the user equipment reports its first and second type power headroom values when operating in transmission mode a, or reports its first type power headroom value when operating in transmission mode b.. .
09/26/13
20130250889
Method and apparatus for controlling uplink power in a wireless access system
According to one embodiment of the present invention, a method for reporting power headroom in a user equipment of a multi-carrier system, includes receiving a physical downlink control channel (pdcch) signal comprising uplink resource allocation information from a base station; transmitting at least one of a physical uplink shared channel (pusch) signal and a physical uplink control channel (pucch) signal to the base station in a predetermined subframe based on the uplink resource allocation information in accordance with a transmission mode; calculating one or more power headroom values for the predetermined subframe in accordance with the transmission mode; and transmitting a report message comprising the one or more power headroom values to the base station, wherein the user equipment reports its first and second type power headroom values when operating in transmission mode a, or reports its first type power headroom value when operating in transmission mode b.. .
09/26/13
20130250875
Methods and apparatus for uplink power control
Certain aspects of the present disclosure relate to methods and apparatus for uplink power control when at least two separate power control algorithms are utilized for adjusting transmission power of uplink transmissions on one or more uplink channels to one or more access points. The method includes transmitting one or more power headroom report (phr) based on channel and/or system parameters.
08/29/13
20130225223
Transmit antenna selection in a mobile wireless device
Methods and apparatuses to select a transmit antenna in a mobile wireless device connected to a wireless network are described. The mobile wireless device monitors received signal characteristics through first and second antennas and switches antennas based on the monitored signal characteristics and on an assessment of the sufficiency of available transmit power headroom to accommodate data transmissions in the uplink direction.
08/29/13
20130223411
Method and apparatus for facilitating effective scheduling grants
A method and apparatus for effectively facilitating grant scheduling is provided. The method may comprise transmitting, by a user equipment (ue), a grant request, wherein the grant request includes a ue power headroom (uph) value, and receiving, from a node b, a scheduling grant, wherein the scheduling grant is derived from the transmitted uph..
08/29/13
20130223406
Power headroom reporting
The disclosure relates to a method for a method for a user equipment configured in carrier aggregation mode to assist an e node b in estimating the total available output power for each component carrier. The method comprises reporting from the user equipment to the e node b at least one of rf architecture information of the user equipment, and at least one power parameter value.
08/22/13
20130215849
Total remaining power estimation in carrier aggregation
A user equipment (ue), comprising at least one component configured to send power headroom (ph) information for each of a plurality of component carriers (ccs) of a carrier aggregation, cc specific configured maximum power information for the ccs, and ue configured maximum power information, wherein the ph information for each of the ccs, the cc specific configured maximum power information for the ccs, and the ue configured maximum power information allow the access device to estimate a total remaining power for the ue.. .
08/22/13
20130215824
Method and device for reporting maximum power of carrier in carrier aggregation scenario
A method and apparatus for reporting a maximum carrier power in a carrier aggregation scenario are disclosed. The method includes: a user equipment (ue) encapsulating a particular power headroom (ph) of an activated uplink component carrier (ul cc) and a particular maximum output power of a physical channel of the activated ul cc into a same power headroom report (phr) and reporting the phr to a base station (enb).
08/15/13
20130210500
Power boosters for radio terminals
A conventional ue in a radio system based on lte may be boosted for use in an extended geographical cell provided by an enodeb. The booster may be connected to the ue in various ways which minimise the changes required to an otherwise standard ue device.
08/15/13
20130208675
Method and device for reporting and obtaining power headroom
Disclosed are a method and device for reporting and obtaining power headroom. The method comprises: user equipment (ue) configuring a maximum transmit power (pcmax); the ue using the pcmax to calculate power headroom (ph); and the ue reporting the pcmax and the ph to a base station.
08/15/13
20130208666
Component carrier uplink maximum transmission power reporting scheme for carrier aggregation
Embodiments of the present disclosure describe method, apparatus, and system configurations for reporting uplink maximum transmission power for each component carrier of a carrier aggregation scheme. A method includes establishing, by a user equipment (ue), a communication link with an enhanced node b (enb) station of an internet protocol (ip) based wireless communication network, and sending, by the ue to the enb station, a message that includes information for a power headroom report (phr) and a value that indicates an uplink maximum transmission power pcmax, c for individual active component carriers of a carrier aggregation scheme.
08/08/13
20130201955
Power limited case signalling
The disclosure relates to a method for a user equipment to report a transmission power capability to an e node b. The user equipment operates in carrier aggregation.
07/25/13
20130188570
Method and apparatus for reporting power headroom in carrier aggregation scenario
Disclosed are a method and an apparatus for reporting power headroom in a carrier aggregation context. By applying the technical solutions of the embodiments of the present invention, phr mac ce and a corresponding mac sub-header are determined according to the number of uplink component carriers needing to report power headroom and a type of the power headroom to be reported, and indication information such as length information of the phr mac ce, type information of the power headroom, and information about whether the power headroom is virtual power headroom is carried therein, so that a base station can precisely obtain the power headroom of each uplink component carrier.
07/25/13
20130188563
Power headroom reporting in wireless communication system for supporting a plurality of serving cells
In the terminal device of the present invention, a transmitter can transmit any one of a maximum transmission power information, a maximum power reduction (mpr) information, and a terminal phr information of the terminal in each one or more serving cells of the terminal among the plurality of serving cells and the phr information of each one or more serving cells of the terminal, to a base station and can transmit the changed mpr information, the changed maximum transmission power information, or the changed terminal phr information when a first phr triggering condition is generated therefrom. A processor controls the transmitter to enable the transmitter to transmit the changed mpr information, the changed maximum transmission power information, or the changed terminal phr information when the mpr information or the maximum transmission power information is changed..
07/18/13
20130182658
Phr processing method and device in carrier aggregation system
The present invention discloses a phr processing method and device in carrier aggregation system, and the method comprises the following steps: user equipment (ue) acquires pathloss change corresponding to uplink carrier in activation state at present; said user equipment judges whether phr is triggered according to said pathloss change; if it is triggered, said user equipment shall acquire the power headroom (ph) information to be reported and report said ph information. In embodiments of the present invention, ue can trigger phr according to pathloss change on uplink carrier in activation state at present in carrier aggregation system..
07/11/13
20130176983
Method for resource scheduling using a carrier aggregation technique
Provided is a scheduling method for allocating a discontinuous resource to a user equipment by using carrier aggregation. The scheduling method includes: receiving a power headroom report from the user equipment; determining discontinuous resource blocks to be allocated to the user equipment on the basis of the power headroom report among the remaining unallocated resource blocks, wherein the determined discontinuous resource blocks suppress occurrence of unnecessary emission; and allocating the determined discontinuous resource blocks to the user equipment..
06/20/13
20130155984
Method and an apparatus for providing control information for multi-carrier uplink transmission
A method and an apparatus for providing control information for multi-carrier uplink transmission are disclosed. A wireless transmit/receive unit (wtru) may set a happy bit for enhanced dedicated channel (e-dch) transmissions on each uplink carrier considering aggregated transmission capability over all uplink carriers.
06/13/13
20130148619
Apparatus and method for transmitting information on power headroom in multiple component carrier system
There are provided an apparatus and method for transmitting power headroom information in a multiple component carrier system. The method includes finding combination power headroom (cph), that is a power headroom, calculated in an user equipment (ue)-specific way with consideration taken of uplink transmission through a plurality of component carriers configured in the ue, generating cph information used to inform an evolved nodeb (enodeb:enb) of the cph, and sending the cph information to the enb.
06/13/13
20130148560
Component carrier uplink maximum transmission power reporting scheme for carrier aggregation
Embodiments of the present disclosure describe method, apparatus, and system configurations for reporting uplink maximum transmission power for each component carrier of a carrier aggregation scheme. A method includes establishing, by a user equipment (ue), a communication link with an enhanced node b (enb) station of an internet protocol (ip) based wireless communication network, and sending, by the ue to the enb station, a message that includes information for a power headroom report (phr) and a value that indicates an uplink maximum transmission power pcmax,c for individual active component carriers of a carrier aggregation scheme.
05/23/13
20130128856
Base station, mobile station, method for transmitting calculation parameters for power headroom, and method for transmitting power headroom
Provided are a base station, a mobile station, a method for transmitting calculation parameters for a power headroom and a method for transmitting a power headroom capable of increasing the accuracy of link adaptation by reducing the probability that a power headroom value is out of a reported range. In a base station (100), a phr bandwidth notifier (105) determines a bandwidth for power headroom calculation to be used for calculating a power headroom by a mobile station (200) for a component carrier to which an unlink allocation signal (ul grant) is not mapped and generates a notification signal containing information on the determined bandwidth for power headroom calculation, and a transmitting means (modulator (106), transmission rf unit (107)) transmits the generated notification signal to the mobile station (200).
05/16/13
20130121297
Terminal device and method for transmitting a power headroom report in a wireless communication system supporting multiple component carriers
The present invention relates to a terminal device and method for transmitting a power headroom report (phr) in a wireless communication system supporting multiple component carriers. The terminal device of the present invention comprises a transmitter for transmitting, to a base station, phr information on at least one component carrier and information on the maximum power reduction (mpr) of the terminal device, wherein the phr information on the at least one component carrier includes component carrier index information, and the mpr information of the terminal device may be an mpr value of said at least one component carrier, or a sum of the mpr values of said at least one component carrier..
05/16/13
20130121203
Apparatus and method of reporting power headroom in wireless communication system
A method and apparatus of reporting a power headroom in a wireless communication system is provided. A user equipment determines a power headroom based on a configured transmit power and transmits a power headroom report to a base station.
05/09/13
20130114457
Method for reporting power headroom report and user equipment
The present invention discloses a method for reporting a power headroom report and a user equipment, which are applied in the field of communications. The method includes triggering reporting of a first power headroom report and determining that a condition of sending the first power headroom report is satisfied.
05/09/13
20130114454
Minimization of drive tests for uplink link coverage
A method of using additional uplink measurements for mdt ul coverage is provided. A base station (enodeb) establishes a radio resource control (rrc) connection with a user equipment (ue) in a mobile communication network.
04/25/13
20130100925
Apparatus and method for transmitting information on power headroom in multiple component carrier system
There are provided an apparatus and method for transmitting power headroom information in a multiple component carrier system. This specification discloses a configuration in which a user equipment (ue) receives a combination power headroom report (cphr) request message, including a combination indication field indicative of a combination including a plurality of component carriers, from a enodeb (enb), calculates a combination power headroom (cph) calculated in the ue-specific way for the plurality of component carriers, and sends the cph to the enb.
04/25/13
20130100916
Apparatus and method of reporting power headroom in wireless communication system
A method and apparatus of reporting a power headroom in a wireless communication system are provided. A user equipment receives an uplink resource allocation for a first serving cell and determines whether a power headroom report is triggered.
04/18/13
20130094450
Mobile communication method and mobile station
A mobile communication method according to the present invention includes a step of transmitting, by a radio base station enb, “rrc connection reconfiguration” instructing to add new dl cc to a mobile station ue, a step of calculating, by the mobile station ue, power headroom on the basis of a path loss estimated from the new dl cc, in response to the “rrc connection reconfiguration”, and a step of transmitting, by the mobile station ue, “mac control element” including the power headroom to the radio base station enb.. .
04/11/13
20130089062
Apparatus and method for transmitting information on power headroom in multiple component carrier system
Accordingly, uplink signaling overhead can be reduced because a power headroom report can be semi-persistently made without the need to additionally send information about the combination component carrier.. .
04/11/13
20130089050
Reporting power headroom for aggregated carriers
A method for reporting power headroom-related information for a plurality of aggregated carriers. The method includes reporting in a bitmap the power headroom-related information for a number of the aggregated carriers that is less than or equal to the total number of aggregated carriers, wherein the power headroom-related information is one of a power headroom for at least one of the aggregated carriers and a path loss for at least one of the aggregated carriers..
03/21/13
20130070716
Apparatus and method for transmitting power headroom in multiple component carrier system
An apparatus and method provide a mobile station transmits power headroom information in a multiple component carrier system. The apparatus and method include receiving a mode decision parameter for deciding a mode of a power headroom report (phr) for uplink component carriers (ul ccs), configured in a mobile station, from a base station, deciding the mode of the phr based on the mode decision parameter, and transmitting the power headroom information to the base station based on the decided mode of the phr.
03/21/13
20130070685
Method for allowing terminal to transmit power headroom information in wireless communication system and device therefor
The present invention relates to a wireless communication system, and more specifically, to a method for allowing a terminal to transmit power headroom information in a wireless communication system and a device therefor. According to one aspect of the present invention, a method for allowing a terminal, in which at least one serving cell is set, to transmit power headroom information comprises the steps of: generating said power headroom information; and transmitting the power headroom information to a base station.
03/21/13
20130070611
Apparatus and method for reporting power headroom in multiple component carrier system
A method and an apparatus for reporting power headroom by a mobile station in a multiple component carrier system is disclosed. The method includes calculating power headroom values for at least one component carrier configured in the mobile station, receiving information regarding a recommended component carrier selected by a base station among the at least one component carrier configured in the mobile station, selecting at least one report component carrier used to report the calculated power headroom values based on the information regarding the recommended component carrier, and transmitting the calculated power headroom values to the base station through the at least one report component carrier..
03/14/13
20130064131
Apparatus and method for transmitting power information in multiple component carrier system
An apparatus and a method for transmitting power information by a mobile station in a multiple component carrier system includes: obtaining power headroom that is a difference between maximum transmit power of a mobile station for each component carrier and power estimated for actual uplink transmission; configuring an identification field that identifies a component carrier that the power headroom is for; configuring power headroom fields that indicates a level of power headroom; and generating a medium access control protocol data unit (mac pdu) including the identification field and the power headroom field and transmitting the generated mac pdu to a base station.. .
02/28/13
20130051259
Method and apparatus for controlling uplink power in a wireless access system
According to one embodiment of the present invention, a method for reporting power headroom in a user equipment of a multi-carrier system, includes receiving a physical downlink control channel (pdcch) signal comprising uplink resource allocation information from a base station; transmitting at least one of a physical uplink shared channel (pusch) signal and a physical uplink control channel (pucch) signal to the base station in a predetermined subframe based on the uplink resource allocation information in accordance with a transmission mode; calculating one or more power headroom values for the predetermined subframe in accordance with the transmission mode; and transmitting a report message comprising the one or more power headroom values to the base station, wherein the user equipment reports its first and second type power headroom values when operating in transmission mode a, or reports its first type power headroom value when operating in transmission mode b.. .
01/31/13
20130028231
Uplink power headroom reporting for carrier aggregation
A method for reporting power headroom is disclosed. Power headroom may be reported across all carriers (wideband), for a specific carrier, or for a carrier group.
01/10/13
20130010720
Power headroom reporting for non-scheduled uplink component carriers
This invention relates to a proposal for power headroom reporting for uplink component carriers for which no uplink resource allocation is scheduled by the enodeb. The user equipment (ue) calculates a virtual power headroom for the non-scheduled uplink component carrier, based on a virtual uplink resource assignment pre-configured by the ue and enodeb.
01/03/13
20130003665
Method and apparatus for selecting enhanced dedicated channel transport format combination in cell_fach state and idle mode
A method and apparatus for selecting an enhanced dedicated channel (e-dch) transport format combination (e-tfc) in cell_fach state and idle mode are disclosed. A wireless transmit/receive unit (wtru) transmits a random access channel (rach) preamble and receives an index to an e-dch resource in response to the rach preamble.


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Power Headroom topics: Power Headroom, Base Station, Carrier Aggregation, Carrier System, Physical Downlink Control Channel, Physical Uplink Control Channel, Allocation, Downlink Control Channel, Access Point, Scheduling, Computer Program, Quality Of Service, Wireless Communication Network, Internet Protocol, Communication System

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