# US 10,455,515 B2 · Method and apparatus for transmitting uplink signals in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,515 B2 - Document ID: US10455515B2 - Status: Granted - Kind: B2 - Application number: 16/196,942 - Filed: 2018-11-20 - Published: 2019-03-21 - Granted: 2019-10-22 - Earliest claimed: 2013-01-03 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Suckchel Yang; Joonkui Ahn; Dongyoun Seo; Yunjung Yi - Web page: https://patentgrep.com/patent/US10455515B2 ## CPC - H04W 52/146: {Uplink power control} - H04L 1/18: Automatic repetition systems, e.g. Van Duuren systems - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04L 27/2607: {Cyclic extensions} - H04W 52/281: {taking into account user or data type priority} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/50: at the moment of starting communication in a multiple access environment - H04W 52/58: Format of the TPC bits - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/20: Control channels or signalling for resource management - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04W 52/325: {Power control of control or pilot channels} - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - H04W 52/365: {Power headroom reporting} - H04W 52/40: during macro-diversity or soft handoff - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 76/15: Setup of multiple wireless link connections - H04W 88/02: Terminal devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for a terminal controlling uplink power in a carrier aggregation-based wireless communication system, comprising the steps of: configuring a first cell and a second cell; transmitting a first PUCCH signal from subframe #n in the first cell; and transmitting a second PUCCH signal from subframe #n in the second cell, wherein when the sum of transmit power of the first PUCCH signal and transmit power of the second PUCCHJ signal exceeds a predetermined maximum transmit power configured to the terminal, the transmit power of the PUCCH signal having a lower priority from among the first UCCH signal and the second PUCCH signal is reduced or the transmission is dropped. ## Claims ### Claim 1 A method for managing transmission power control by a user equipment (UE) in a carrier aggregation based wireless communication system, the method comprising: transmitting a first physical uplink control channel (PUCCH), including first uplink control information (UCI), via a first cell of a first cell group, the first UCI being a first type UCI having a first UCI priority; and transmitting a second PUCCH, including a second UCI, via a second cell of a second cell group, the second UCI being a second type UCI having a second UCI priority, wherein a first transmission power is allocated to the first PUCCH and a second transmission power is allocated to the second PUCCH according to a power allocation rule so that a total transmit power limit of the UE is not exceeded, and wherein the first cell group comprises a primary cell (PCell) and zero or more secondary cells (SCells), and the second cell group comprises one or more SCells, wherein the power allocation rule includes: preferentially allocating power to the first transmission power when the first priority is higher than the second priority, and preferentially allocating power to the second transmission power when the second priority is higher than the first priority, and preferentially allocating power to the first transmission power when the first priority is equal to the second priority and the first PUCCH is transmitted on the PCell of the first cell group. ### Claim 2 (depends on 1) The method of claim 1, wherein the first transmission power is allocated to the first PUCCH and the second transmission power is allocated to the second PUCCH according to the power allocation rule when at least a portion of the first PUCCH overlaps in time with at least a portion of the second PUCCH. ### Claim 3 (depends on 1) The method of claim 1, wherein the preferentially allocating power to the first transmission power when the first priority is higher than the second priority, and the preferentially allocating power to the second transmission power when the second priority is higher than the first priority comprises: reducing the second transmission power when the first priority is higher than the second priority, and reducing the first transmission power when the second priority is higher than the first priority, respectively. ### Claim 4 (depends on 1) The method of claim 1, wherein, when the first priority equals the second priority, the preferential allocation of power to the first transmission power includes at least one of: reducing power of at least one of the one or more SCells of the second cell group, or reducing power of at least one of any SCell of the primary cell group. ### Claim 5 (depends on 1) The method of claim 1, wherein the first type UCI is the same as the second type UCI. ### Claim 6 (depends on 1) The method of claim 1, wherein the first type UCI is different from the second type UCI. ### Claim 7 (depends on 1) The method of claim 1, wherein the second cell group further includes a second PCell, and wherein, when the first priority equals the second priority, the preferential allocation of power to the first transmission power includes reducing power of the second PCell. ### Claim 8 (depends on 1) The method of claim 1, wherein, when the first priority equals the second priority, the first type UCI is the same as the second type UCI. ### Claim 9 A user equipment (UE) configured to manage transmission power control in a carrier aggregation based wireless communication system, the UE comprising: a transceiver; and a processor operatively connected to the transceiver and configured to: transmit a first physical uplink control channel (PUCCH), including first uplink control information (UCI), via a first cell of a first cell group, the first UCI being a first type UCI having a first UCI priority; and transmit a second PUCCH, including a second UCI, via a second cell of a second cell group, the second UCI being a second type UCI having a second UCI priority, wherein a first transmission power is allocated to the first PUCCH and a second transmission power is allocated to the second PUCCH according to a power allocation rule so that a total transmit power limit of the UE is not exceeded, and wherein the first cell group comprises a primary cell (PCell) and zero or more secondary cells (SCells), and the second cell group comprises one or more SCells, wherein the power allocation rule includes: preferentially allocating power to the first transmission power when the first priority is higher than the second priority, and preferentially allocating power to the second transmission power when the second priority is higher than the first priority, and preferentially allocating power to the first transmission power when the first priority is equal to the second priority and the first PUCCH is transmitted on the PCell of the first cell group.