# US 2020/0288451 A1 · Method and device for receiving system information on basis of beam information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288451 A1 - Document ID: US20200288451A1 - Status: Published application - Kind: A1 - Application number: 16/065,026 - Filed: 2017-07-14 - Published: 2020-09-10 - Earliest claimed: 2016-07-20 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Youngdae LEE; Hanbyul SEO; Jaewook LEE - Web page: https://patentgrep.com/patent/US20200288451A1 ## CPC - H04W 48/14: using user query {or user detection} - H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00) - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/046: {the resource being in the space domain, e.g. beams} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/54: based on quality criteria - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 48/20: Selecting an access point - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for a terminal to receive system information in a wireless communication system on the basis of beam information, and a device supporting the method are provided. The method may comprise: a step of selecting a beam; a step of transmitting, to a base station, a system information request including a random access channel (RACH) preamble corresponding to the selected beam; a step of receiving a response to the RACH preamble from the base station, wherein the response to the RACH preamble includes beam information indicating a specific beam; and a step of receiving system information requested by the system information request, via the specific beam indicated by the beam information. ## Claims ### Claim 1 A method for receiving, by a wireless device, system information in a wireless communication system, the method comprising: receiving, from a base station, information related to (i) a plurality of beams and (ii) a system information request period; selecting a beam from the plurality of beams based on the information related to the plurality of beams; transmitting, to the base station and based on the information related to the system information request period, a random access preamble corresponding to the selected beam to request the system information from the base station; and receiving a response to the random access preamble from the base station, wherein the response to the random access preamble includes the requested system information. ### Claim 2 (depends on 1) The method of claim 1, wherein quality of the selected beam is above a threshold. ### Claim 3 (depends on 1) The method of claim 1, wherein the response to the random access preamble is received based on a system information reception period. ### Claim 4 (depends on 3) The method of claim 3, wherein the system information request period and the system information reception period are not overlapped with each other. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving system information scheduling information from the base station; and determining whether to request the system information based on the received system information scheduling information. ### Claim 6 (depends on 1) The method of claim 1, further comprising: selecting the random access preamble from a plurality of random access preambles based on the selected beam. ### Claim 7 (depends on 1) The method of claim 1, wherein the response to the random access preamble is received through the selected beam. ### Claim at position 8 8-14. (canceled) ### Claim 15 A wireless device for receiving system information in a wireless communication system, the wireless device comprising: at least one transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising: receiving, from a base station, information related to (i) a plurality of beams and (ii) a system information request period selecting a beam from the plurality of beams based on the information related to the plurality of beams; transmitting, to the base station and based on the information related to the system information request period, a random access preamble corresponding to the selected beam to request the system information from the base station; and receiving a response to the random access preamble from the base station, wherein the response to the random access preamble includes the requested system information. ### Claim 16 (depends on 15) The wireless device of claim 15, wherein quality of the selected beam is above a threshold. ### Claim 17 (depends on 15) The wireless device of claim 15, wherein the response to the random access preamble is received based on a system information reception period. ### Claim 18 (depends on 17) The wireless device of claim 17, wherein the system information request period and the system information reception period are not overlapped with each other. ### Claim 19 (depends on 15) The wireless device of claim 15, wherein the operations further comprise: receiving system information scheduling information from the base station; and determining whether to request the system information based on the received system information scheduling information. ### Claim 20 (depends on 15) The wireless device of claim 15, wherein the operations further comprise: selecting the random access preamble from a plurality of random access preambles based on the selected beam. ### Claim 21 (depends on 15) The wireless device of claim 15, wherein the response to the random access preamble is received through the selected beam. ### Claim 22 (canceled)