# US 10,122,423 B2 · Method for controlling antenna and electronic device using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,122,423 B2 - Document ID: US10122423B2 - Status: Granted - Kind: B2 - Application number: 15/581,645 - Filed: 2017-04-28 - Published: 2017-12-21 - Granted: 2018-11-06 - Earliest claimed: 2016-06-17 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Dooyoung Kim; Moonsik Min; Hyoungjoo Lee; Chaeman Lim - Web page: https://patentgrep.com/patent/US10122423B2 ## CPC - H04B 7/0413: MIMO systems - H04B 7/0617: {for beam forming} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0689: {using different transmission schemes, at least one of them being a diversity transmission scheme} - H04B 7/0691: {using subgroups of transmit antennas} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04L 5/0023: {Time-frequency-space} - H04L 27/28: with simultaneous transmission of different frequencies each representing one code element - H04W 52/0209: {in terminal devices} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/27: Transitions between radio resource control [RRC] states - Y02D 30/70: in wireless communication networks - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Various exemplary embodiments of the present disclosure relate to a device and a method for controlling a plurality of antennas in an electronic device. The electronic device may include: a plurality of antennas; a communication circuit configured to be connected to the plurality of antennas; and at least one processor, wherein the processor may be configured to: set a multi-antenna service using a second number of antennas; activate the second number of antennas among the plurality of antennas when a time to transmit channel state information comes; transmit channel state information on the second number of antennas to a network device; and switch to activate a first number of antennas among the plurality of antennas and the second number of antennas may include a greater number of antennas than the first number of antennas. Other exemplary embodiments are possible. ## Claims ### Claim 1 An electronic device comprising: a plurality of antennas; a communication circuit connected to the plurality of antennas; and at least one processor configured to: set a multi-antenna service using a second number of antennas among the plurality of antennas: in response to determining that a transmission period of channel state information is elapsed, control the communication circuit to transmit, to a network device, the channel state information on the second number of antennas; and activate a first number of antennas among the plurality of antennas in response to transmitting the channel state information, wherein remaining antennas except the first number of antennas among the plurality of antennas are deactivated, and wherein the second number of antennas comprise a greater number of antennas than the first number of antennas. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the at least one processor is further configured to set the multi-antenna service using the second number of antennas while the first number of antennas are activated among the plurality of antennas. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the at least one processor is further configured to set the multi-antenna service using the second number of antennas through a radio resource control (RRC) connection procedure with the network device. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the at least one processor is further configured to: determine whether to activate the second number of antennas based on the channel state information in response to determining that the transmission period of channel state information is elapsed; and activate the second number of antennas among the plurality of antennas in response to determining to activate the second number of antennas. ### Claim 5 (depends on 4) The electronic device of claim 4, wherein the at least one processor is further configured to control the communication circuit to transmit, to the network device, the channel state information on the first number of antennas in response to determining not to activate the second number of antennas. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein the at least one processor is further configured to: identify a received signal strength in response to determining that the transmission period of channel state information is elapsed; determine whether to activate the second number of antennas based on the received signal strength; and activate the second number of antennas among the plurality of antennas in response to determining to activate the second number of antennas. ### Claim 7 (depends on 6) The electronic device of claim 6, wherein the at least one processor is further configured to control the communication circuit to transmit, to the network device, the channel state information on the first number of antennas in response to determining not to activate the second number of antennas. ### Claim 8 (depends on 1) The electronic device of claim 1, wherein the at least one processor is further configured to: identify a layer of a data stream when a downlink resource is allocated; determine whether to activate the second number of antennas based on the layer of the data stream; activate the second number of antennas among the plurality of antennas in response to determining to activate the second number of antennas; and receive data using the second number of antennas. ### Claim 9 (depends on 8) The electronic device of claim 8, wherein the at least one processor is further configured to receive data using the first number of antennas in response to determining not to activate the second number of antennas. ### Claim 10 (depends on 8) The electronic device of claim 8, wherein the at least one processor is further configured to identify the layer of the data stream in a physical downlink control channel (PDCCH). ### Claim 11 An operating method of an electronic device, the method comprising: setting a multi-antenna service using a second number of antennas among a plurality of antennas functionally connected to the electronic device; in response to determining that a transmission period of channel state information is elapsed, transmitting, to a network device, the channel state information on the second number of antennas; and activating a first number of antennas among the plurality of antennas in response to transmitting the channel state information, wherein the second number of antennas comprise a greater number of antennas than the first number of antennas. ### Claim 12 (depends on 11) The method of claim 11, wherein setting the multi-antenna service comprises, arranging with the network device, setting the multi-antenna service using the second number of antennas while the first number of antennas are activated among the plurality of antennas. ### Claim 13 (depends on 11) The method of claim 11, wherein setting the multi-antenna service comprises setting the multi-antenna service using the second number of antennas through a radio resource control (RRC) connection procedure with the network device. ### Claim 14 (depends on 11) The method of claim 11, wherein transmitting the channel state information comprises: determining whether to activate the second number of antennas based on the channel state information in response to determining that the transmission period of channel state information is elapsed; activating the second number of antennas among the plurality of antennas in response to determining to activate the second number of antennas; and transmitting, to the network device, the channel state information on the second number of antennas. ### Claim 15 (depends on 14) The method of claim 14, further comprising transmitting, to the network device, the channel state information on the first number of antennas to the network device in response to determining not to activate the second number of antennas. ### Claim 16 (depends on 11) The method of claim 11, wherein transmitting the channel state information comprises: identifying a received signal strength in response to determining that the transmission period of channel state information is elapsed; determining whether to activate the second number of antennas based on the received signal strength; activating the second number of antennas among the plurality of antennas in response to determining to activate the second number of antennas; and transmitting, to the network device, the channel state information on the second number of antennas. ### Claim 17 (depends on 16) The method of claim 16, further comprising transmitting, to the network device, the channel state information on the first number of antennas in response to determining not to activate the second number of antennas. ### Claim 18 (depends on 11) The method of claim 11, wherein activating the first number of antennas comprises: selecting the first number of antennas from the second number of antennas; and deactivating antennas that are not selected as the first number of antennas among the second number of antennas. ### Claim 19 (depends on 11) The method of claim 11, further comprising: identifying a layer of a data stream if a downlink resource is allocated; determining whether to activate the second number of antennas based on the layer of the data stream; activating the second number of antennas among the plurality of antennas in response to determining to activate the second number of antennas; and receiving data using the second number of antennas. ### Claim 20 (depends on 19) The method of claim 19, further comprising receiving data using the first number of antennas in response to determining not to activate the second number of antennas.