Method of controlling terminal output power during carrier aggregation and apparatus therefor
地域：
Seoul
摘要
The present disclosure provides a method of controlling an output power of a terminal during a carrier aggregation operation and an apparatus suitable for the method. During the carrier aggregation operation, the terminal may control the power allocation such that more transmission power is allocated for the primary cell when there exists a bearer established already for a particular service such as the VoLTE service, so as to facilitate high quality services according to a service using situation of the terminal.
說明書
The present application is a continuation of International Patent Application No. PCT/KR2018/009718, filed on Aug. 23, 2018, which is based upon and claims the benefit of priority to Korean Patent Application No. 10-2017-0142799, filed on Oct. 30, 2017 in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in their entirety.
The present disclosure relates to a method of controlling an output power of a terminal and, more particularly, to a method of controlling the output power of the terminal during a carrier aggregation operation, which variably controls the output power for each carrier according to a type of a service to control the quality of service of the terminal when the terminal performs the carrier aggregation operation. Also, the present disclosure relates to an apparatus suitable for the method.
The description in this section merely provides background information of embodiments of the present disclosure and is not intended to specify prior arts of the present disclosure.
As mobile communication technology evolves, a carrier aggregation which combines two or more carriers into one data channel has been introduced to mobile communication systems in order to increase a bandwidth of the channel between the terminal and a base station and thereby increase a bitrate.
權(quán)利要求
What is claimed is:1. In an apparatus supporting a carrier aggregation in a wireless communication system, a method of controlling an output power of a terminal during the carrier aggregation, comprising:setting communications with a primary cell and a secondary cell according to a carrier aggregation operation; performing a power control such that transmission powers for the primary cell and the secondary cell are divided within a range of a maximum transmission power; and when a bearer established already is identified, determining the transmission powers for the primary cell and the secondary cell such that more transmission power is applied to the primary cell than to the secondary cell, wherein the determining the transmission powers comprises: when the bearer established already is identified, determining whether a reference signal received power (RSRP) is less than a predetermined threshold, and when it is determined that the reference signal received power is less than the predetermined threshold, determining the transmission powers for the primary cell and the secondary cell such that more transmission power is applied to the primary cell than to the secondary cell. 2. The method of controlling the output power of the terminal during the carrier aggregation according to claim 1 , wherein the bearer established already is identified through a quality of service class identifier (QCI). 3. The method of controlling the output power of the terminal during the carrier aggregation according to claim 2 , wherein, when the bearer for a packet-based voice call service is identified from the quality of service class identifier, the transmission powers for the primary cell and the secondary cell are determined such that more transmission power is applied to the primary cell than to the secondary cell. 4. The method of controlling the output power of the terminal during the carrier aggregation according to claim 1 , further comprising, after determining the transmission powers:transmitting a power headroom report (PHR) including information on the transmission power determined for each cell to a base station. 5. A non-transitory computer-readable storage medium storing programs thereon, the instructions when executed by a processor on a user device causing the processor to execute a method of controlling an output power of a terminal during the carrier aggregation, wherein the method comprises:setting communications with a primary cell and a secondary cell according to a carrier aggregation operation; performing a power control such that transmission powers for the primary cell and the secondary cell are divided within a range of a maximum transmission power; and when a bearer established already is identified, determining the transmission powers for the primary cell and the secondary cell such that more transmission power is applied to the primary cell than to the secondary cell, wherein the determining the transmission powers comprises:when the bearer established already is identified, determining whether a reference signal received power (RSRP) is less than a predetermined threshold, and when it is determined that the reference signal received power is less than the predetermined threshold, determining the transmission powers for the primary cell and the secondary cell such that more transmission power is applied to the primary cell than to the secondary cell. 6. An apparatus supporting a carrier aggregation in a wireless communication system, comprising:a carrier aggregation processor configured to set communications with a primary cell and a secondary cell according to a carrier aggregation operation; a determiner configured to determine whether there exists a bearer established already while the carrier aggregation operation is performed by the carrier aggregation processor; and a power controller configured to divide transmission powers for the primary cell and the secondary cell within a range of a maximum transmission power during the carrier aggregation operation, and determine the transmission powers for the primary cell and the secondary cell such that more transmission power is applied to the primary cell than to the secondary cell when the bearer established already is identified to exist by the determiner, whereinwhen the bearer established already is identified, the determiner is configured to determine whether a reference signal received power (RSRP) is less than a predetermined threshold, and when it is determined that the reference signal received power is less than the predetermined threshold, the power controller is configured to determine the transmission powers for the primary cell and the secondary cell such that more transmission power is applied to the primary cell than to the secondary cell. 7. The apparatus of claim 6 , wherein the bearer established already is identified through a quality of service class identifier (QCI). 8. The apparatus of claim 6 , wherein the power controller transmits a power headroom report (PHR) including information on the transmission power determined for each cell to a base station.
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