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 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.
Abstract:
A method for transmitting a channel state by a terminal in a communication system, according to one embodiment, comprises the steps of: receiving discontinuous reception (DRX) configuration information from a base station; determining whether the terminal is set to transmit channel state information only in onDuration according to a DRX operation; determining whether an arbitrary subframe to be received is a subframe included in onDuration if the terminal is set to transmit the channel state information only in onDuration according to the configuration; and not transmitting the channel state information on the arbitrary subframe if the arbitrary subframe is not a subframe included in onDuration. According to the embodiment, the terminal can efficiently report channel state information.
Abstract:
The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed.
Abstract:
The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed.
Abstract:
The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed.
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:
Provided are a method and apparatus for dormant mode operation in a user equipment. During dormant mode, data transmission between the user equipment and network is suspended. For dormant mode operation, the user equipment determines whether to enter dormant mode, and sends, upon determining to enter dormant mode, a dormant mode entry message containing dormant mode time information to the network.
Abstract:
According to one embodiment of the present disclosure, the method by means of which a mobility management entity (MME) determines the communication mode of a terminal in a communication system includes the steps of: receiving, from the terminal, an access request including information on the position of the terminal; transmitting a message to a home subscriber server (HSS) on the basis of the received access request; receiving, from the HSS, specific position information for setting a first mode; comparing the information on the position of the terminal with the specific position information; and determining the communication mode of the terminal according to the result of the comparison. According to the present disclosure, the frequent transmission of small amounts of data can be supported in an efficient manner.