Abstract:
A method and an apparatus for efficiently transmitting or reporting a Power Headroom Report (PHR) of a User Equipment (UE) are provided. The method of transmitting the PHR of the UE in a mobile communication system includes configuring an extended PHR including an indicator corresponding to a variation factor of a maximum transmission power of the UE, and transmitting the extended PHR from the UE to a Base Station (BS). The BS may be notified of a maximum transmission power of the UE and a variation factor corresponding to the maximum transmission power in order to enable efficient scheduling.
Abstract:
A method and an apparatus for efficiently transmitting or reporting a Power Headroom Report (PHR) of a User Equipment (UE) are provided. The method of transmitting the PHR of the UE in a mobile communication system includes configuring an extended PHR including an indicator corresponding to a variation factor of a maximum transmission power of the UE, and transmitting the extended PHR from the UE to a Base Station (BS). The BS may be notified of a maximum transmission power of the UE and a variation factor corresponding to the maximum transmission power in order to enable efficient scheduling.
Abstract:
A method and an apparatus for efficiently transmitting or reporting a Power Headroom Report (PHR) of a User Equipment (UE) are provided. The method of transmitting the PHR of the UE in a mobile communication system includes configuring an extended PHR including an indicator corresponding to a variation factor of a maximum transmission power of the UE, and transmitting the extended PHR from the UE to a Base Station (BS). The BS may be notified of a maximum transmission power of the UE and a variation factor corresponding to the maximum transmission power in order to enable efficient scheduling.
Abstract:
The present invention relates to a method and an apparatus for logging a radio resource control (RRC) failure of user equipment (UE) and receiving the log. According to one embodiment of the present invention, a method for logging an RRC failure of UE may comprise the steps of: attempting random access; if the failure of random access is sensed, logging information on the failure; and if the success of random access is sensed, transmitting information on the failure logged before the success to a connected base station. According to one embodiment of the present invention, an apparatus and a method which effectively log a channel state or a connection failure can be provided.
Abstract:
A method and an apparatus for transmitting multimedia broadcast single-frequency network (MBSFN) subframe configuration information of neighboring cells in a wireless system is provided. The method comprises: transmitting, by a base station of a serving cell, MBSFN subframe configuration information of the serving cell to a UE which accepts services from the serving cell via a broadcast control channel (BCCH); transmitting information on a subset relationship of MBSFN subframe configurations of the neighboring cells relative to the MBSFN subframe configuration of the serving cell to the UE which accepts services from the serving cell via the broadcast control channel (BCCH); performing, by the UE, measurements on the neighboring cells according to the subframe configuration information of the serving cell and the information on the subset relationship of the MBSFN subframe configurations of the neighboring cells relative to the MBSFN subframe configuration of the serving cell.
Abstract:
Disclosed are a method and an apparatus for transmitting and receiving measurement information in a mobile communication system. A terminal transmits a connection request message to a network and reports to the network, connection failure-related measurement information when a registered public land mobile network (RPLMN) included in a connection setup message received from the network corresponds to a pre-stored and selected public land mobile network (PLMN) and the connection failure-related measurement information stored with the selected PLMN is available.
Abstract:
A method and apparatus for transmitting a power headroom (PH) report by a terminal in a mobile communication system supporting carrier aggregation are provided. The method includes determining a first maximum transmission power for a first serving cell of multiple activated serving cells based on uplink transmission of at least one other serving cell if the first serving cell transmits a physical uplink shared channel (PUSCH), determining a second maximum transmission power for a first serving cell of the multiple activated serving cells without consideration of uplink transmission of at least one other serving cell if the first serving cell does not transmit a PUSCH, calculating a PH for the first serving cell based on the first maximum transmission power or the second maximum transmission power, and transmitting, to a base station, an extended PH report including respective calculated PHs of the multiple activated serving cells on one of the multiple activated serving cells.
Abstract:
The present invention relates to a method for managing cell informations received from neighbor cells for MDT (Minimization of Drive Test) in the 3GPP system and terminal for performing the method, the terminal including a transceiver which receives cell informations transmitted by at least one neighbor base station; a controller which checks at least one cell information for generating location prediction information to check current location of the terminal among the cell informations received by the transceiver; and a memory which stores the at least one cell information for generating the location prediction information as Minimization of Drive Test (MDT) measurement sample for reporting radio environment under the control of the controller. The terminal is capable of logging the neighbor cell measurement information efficiently depending on whether the terminal logs RF fingerprint information in the idle mode.
Abstract:
A method and an apparatus for configuring uplink transmission power and apparatus in a mobile communication system supporting downlink and uplink carrier aggregation are provided. The method includes determining a per-terminal maximum transmission power and per-serving cell maximum transmission powers based on ΔTC,c as a value for allowing an adjustment of additional transmission power for multiple serving cells, Maximum Power Reductionc (MPRc) as a value determined according to an amount of transmission resources allocated to the terminal, and Additive-MPRc (A-MPRc) as a value determined according to local characteristics and frequency band characteristics, determining per-serving cell uplink transmission powers by restricting required transmission powers for respective serving cells to the corresponding per-serving cell maximum transmission powers, comparing a sum of the per-serving cell uplink transmission powers with the per-terminal maximum transmission power, and adjusting the per-serving cell uplink transmission powers according to comparison result.
Abstract:
A method and user equipment (UE) for obtaining power headroom information in a communication system are provided. The method includes acquiring information for a path loss reference, wherein the information for the path loss reference indicates whether the UE applies as the path loss reference either a downlink of a primary cell or a downlink of a secondary cell (SCell), triggering a power headroom report (PHR) if a path loss is changed more than a threshold for at least one activated cell which is used as the path loss reference, obtaining power headroom information for each activated cell, if extended PHR is used and an uplink resource is allocated for new transmission, and generating a medium access control (MAC) protocol data unit (PDU) including the power headroom information for each activated cell and an indicator for each activated cell. The indicator indicates whether power headroom information is based on a real physical uplink shared channel (PUSCH) transmission or a PUSCH reference format.