Abstract:
Provided are a method for making a quality measurement report by a terminal in which a plurality of serving cells in the same frequency band are configured, and a terminal using the method. The method comprises the steps of: receiving measurement configuration information; performing quality measurements on some or all of the plurality of serving cells according to the measurement configuration information; determining whether a measurement report criterion is met on the basis of a result of the quality measurement; and transmitting a report message including the result of the quality measurement when the measurement report criterion is met, wherein the measurement configuration information contains reference information, and the reference information indicates a reference cell by which it is determined whether the measurement report criterion is met.
Abstract:
Provided is a method for reporting mobility information by means of a terminal in a wireless communication system. The method includes generating mobility information and reporting the mobility information via a network. The mobility information includes mobility state information indicating the estimated mobility state of the terminal, and mobility history information relating to the mobility history of the terminal.
Abstract:
Provided is a method for communicating performed by a terminal in a wireless communication system. The method comprises receiving from a first access network a second access network search configuration for searching a second access network, and receiving traffic routing criteria from the first access network. The traffic routing configuration specifies traffic routing criteria for processing traffic of the first access network by routing to a second access network, determining a mobility state of the terminal, searching the second access network based on the second access network search configuration, evaluating whether a second access network entity discovered through the search satisfies the traffic routing criteria, and processing the traffic of the first access network through the second access network entity. The second access network searching and/or the traffic routing criteria satisfaction evaluating is performed based on the mobility state of the terminal that is determined.
Abstract:
A method and apparatus for selecting a device-to-device (D2D) group in a wireless communication system is provided. A user equipment (UE) detects at least two D2D groups, and if the UE has no capability for supporting the at least two D2D groups, the UE selects one D2D group among the at least two D2D groups based on at least one of measurement results from the at least two D2D groups or group priority of each of the at least two D2D groups.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for calculating and reporting a buffer status in the wireless communication system, the method comprising: receiving a Packet Data Convergence Protocol (PDCP) data transmission ratio and an offset value; calculating a first buffer status for the first BS and a second buffer status for the second BS based on the PDCP data transmission ratio; starting a timer for the first BS when the calculated first buffer status is reported to the first BS; checking whether an uplink (UL) grant is received from the first BS when the timer for the first BS expires; and updating the PDCP data transmission ratio using the offset value if the UL grant is not received from the first BS; and re-calculating the first buffer status for the first BS and the second buffer status for the second BS based on the updated PDCP data transmission ratio.
Abstract:
A method and apparatus for unifying proximity services (ProSe) groups in a wireless communication system is provided. A first user equipment (UE), which is a group owner of a first proximity services (ProSe) group determines ProSe group unification of the first ProSe group and the second ProSe group based on at least one of the measurement results, priorities of the first UE and a second UE which is a group owner of a second ProSe group, or priorities of the first ProSe group and the second ProSe group. If it is determined to perform ProSe group unification, the first UE determining a new group owner of a unified ProSe group with the second UE, and transmits information on the ProSe group unification to members of the first ProSe group.
Abstract:
There is provided a method for adjusting a transmission power. The method may comprise: classifying, by a user equipment (UE), a plurality of cells into groups, each of which includes one or more cells belonging to the same base station; determining, by the UE, a transmission power for each group; and adjusting, by the UE, the determined transmission power for each group such that a summation of transmission powers for cells included in each group is less than or equal to a maximum transmission power configured for each group.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for triggering a buffer status reporting in the wireless communication system, the method comprising: calculating an amount of first DAT when the first data is arrived in a protocol entity, wherein the amount of first DAT is less than a threshold; calculating an amount of second DAT when the second data is arrived in the protocol entity, wherein the second data is arrived after the first data is arrived in the protocol entity; and triggering a buffer status report if the amount of second DAT is more than the threshold.
Abstract:
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for power headroom reporting in the wireless communication system, the method comprising: obtaining information related to a power headroom (PH) for the second BS; obtaining PH of activated cells of the UE; and transmitting, to a first BS, the information related to the PH for the second BS and the PH of activated cells of the UE.
Abstract:
A method for performing a measurement in a wireless communication system is provided. A terminal selects one of a plurality of measurement configurations, and performs a measurement according to the selected measurement configuration. Signaling overhead caused by frequently transferring measurement configurations can be reduced.