# US 2019/0174425 A1 · Scheduling method, power control method, and base station > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174425 A1 - Document ID: US20190174425A1 - Status: Published application - Kind: A1 - Application number: 16/257,097 - Filed: 2019-01-25 - Published: 2019-06-06 - Earliest claimed: 2016-07-25 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Zhihua TANG - Web page: https://patentgrep.com/patent/US20190174425A1 ## CPC - H04W 52/243: {taking into account interferences} - H04W 52/241: {taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo} - H04W 52/242: {taking into account path loss} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/60: using different transmission rates for TPC commands - H04W 72/0473: {the resource being transmission power} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/53: based on regulatory allocation policies - H04W 88/08: Access point devices - H04W 52/08: Closed loop power control - H04W 52/146: {Uplink power control} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A power control method and a base station are provided. The base station obtains a first resource block (RB) set and a second RB set after a power control cycle arrives, wherein the first RB set is an RB set that is allocated by the first base station to first user equipment (UE) in a first cell at each transmission time interval (TTI) in the power control cycle, and the second RB set is an RB set that is allocated by a second base station to second UE in a second cell at each TTI in the power control cycle. Then the base station performs power control on the first UE based on the first RB set and the second RB set. ## Claims ### Claim 1 A power control method, wherein the method comprises: obtaining, by a first base station, a first resource block (RB) set and a second RB set after a power control cycle arrives, wherein the first RB set is an RB set that is allocated by the first base station to first user equipment (UE) in a first cell at each transmission time interval (TTI) in the power control cycle, and the second RB set is an RB set that is allocated by a second base station to second UE in a second cell at each TTI in the power control cycle; and performing, by the first base station, power control on the first UE based on the first RB set and the second RB set. ### Claim 2 (depends on 1) The method according to claim 1, wherein the performing, by the first base station, power control on the first UE based on the first RB set and the second RB set comprises: determining, by the first base station based on the first RB set and the second RB set, first system utility corresponding to each TTI in the power control cycle, wherein the first system utility comprises four pieces of system utility obtained if a transmit power control (TPC) command of the first UE at each TTI in the power control cycle is −1, 0, 1, and 3; determining, by the first base station, an optimal TPC command of the first UE at each TTI in the power control cycle based on the first system utility corresponding to each TTI in the power control cycle, wherein the optimal TPC command of the first UE at each TTI in the power control cycle is a TPC command corresponding to maximum system utility in the first system utility corresponding to the TTI; determining, by the first base station, an optimal TPC command of the first UE in the power control cycle based on the optimal TPC command of the first UE at each TTI in the power control cycle; and sending, by the first base station, the optimal TPC command to the first UE, so that the first UE adjusts transmit power based on the optimal TPC command. ### Claim 3 (depends on 2) The method according to claim 2, wherein the determining, by the first base station, an optimal TPC command of the first UE in the power control cycle based on the optimal TPC command of the first UE at each TTI in the power control cycle comprises: collecting, by the first base station, statistics about the optimal TPC commands of the first UE at the TTIs in the power control cycle to determine a most frequent TPC command, and determining the most frequent TPC command as the optimal TPC command of the first UE in the power control cycle. ### Claim 4 (depends on 2) The method according to claim 2, wherein the determining, by the first base station, an optimal TPC command of the first UE in the power control cycle based on the optimal TPC command of the first UE at each TTI in the power control cycle comprises: adding, by the first base station, the optimal TPC commands of the first UE at the TTIs in the power control cycle, to obtain a sum value, and determining an optimal TPC command of the first UE that is in the optimal TPC commands at the TTIs in the power control cycle and that is closest to the sum value as the optimal TPC command of the first UE in the power control cycle. ### Claim 5 (depends on 2) The method according to claim 2, wherein the first base station calculates system utility by using a preset calculation formula, and the preset calculation formula is: U = ∑ j   lg  ( x j ) , wherein x j = B × log 2  ( 1 + S I + N ) , U represents the system utility, xj represents a transmission rate of jth UE in a system, B represents a quantity of RBs occupied by the jth UE, S represents transmit power of the jth UE, I represents intensity of interference to the jth UE, and N represents noise strength. ### Claim 6 A base station, wherein the base station comprises: a processor; and a memory coupled to the processor for storing computer-executable instructions, wherein the computer-executable instructions, when executed by the processor, cause the base station to: obtain a first resource block (RB) set and a second RB set after a power control cycle arrives, wherein the first RB set is an RB set that is allocated by the first base station to first user equipment (UE) in a first cell at each transmission time interval (TTI) in the power control cycle, and the second RB set is an RB set that is allocated by a second base station to second UE in a second cell at each TTI in the power control cycle; and perform power control on the first UE based on the first RB set and the second RB set. ### Claim 7 (depends on 6) The base station according to claim 6, wherein the computer-executable instructions, when executed by the processor, further cause the base station to: determine first system utility corresponding to each TTI in the power control cycle based on the first RB set and the second RB set, wherein the first system utility comprises four pieces of system utility obtained if a transmit power control (TPC) command of the first UE at each TTI in the power control cycle is −1, 0, 1, and 3; determine an optimal TPC command of the first UE at each TTI in the power control cycle based on the first system utility corresponding to each TTI in the power control cycle, wherein the optimal TPC command of the first UE at each TTI in the power control cycle is a TPC command corresponding to maximum system utility in the first system utility corresponding to the TTI; determine an optimal TPC command of the first UE in the power control cycle based on the optimal TPC command of the first UE at each TTI in the power control cycle; and send the optimal TPC command to the first UE, so that the first UE adjusts transmit power based on the optimal TPC command. ### Claim 8 (depends on 7) The base station according to claim 7, wherein the computer-executable instructions, when executed by the processor, further cause the base station to: collect statistics about the optimal TPC commands of the first UE at the TTIs in the power control cycle to determine a most frequent TPC command, and determining the most frequent TPC command as the optimal TPC command of the first UE in the power control cycle. ### Claim 9 (depends on 7) The base station according to claim 7, wherein the computer-executable instructions, when executed by the processor, further cause the base station to: add the optimal TPC commands of the first UE at the TTIs in the power control cycle, to obtain a sum value, and determining an optimal TPC command of the first UE that is in the optimal TPC commands at the TTIs in the power control cycle and that is closest to the sum value as the optimal TPC command of the first UE in the power control cycle. ### Claim 10 (depends on 7) The base station according to claim 7, wherein the computer-executable instructions, when executed by the processor, further cause the base station to: calculate system utility by using a preset calculation formula, and the preset calculation formula is: U = ∑ j   lg  ( x j ) , wherein x j = B × log 2  ( 1 + S I + N ) , represents the system utility, xj represents a transmission rate of jth UE in a system, B represents a quantity of RBs occupied by the jth UE, S represents transmit power of the jth UE, I represents intensity of interference to the jth UE, and N represents noise strength.