# US 12,224,798 B2 · Method and test system for testing light-fidelity coverage > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,798 B2 - Document ID: US12224798B2 - Status: Granted - Kind: B2 - Application number: 18/058,995 - Filed: 2022-11-28 - Published: 2024-05-30 - Granted: 2025-02-11 - Earliest claimed: 2022-11-28 - Assignees: Rohde & Schwarz GmbH & Co. KG - Applicants: Rohde & Schwarz GmbH & Co. KG - Inventors: Kok Meng Wong - Web page: https://patentgrep.com/patent/US12224798B2 ## CPC - H04B 10/116: Visible light communication - H04B 17/318: Received signal strength - H04B: TRANSMISSION ## Abstract The present disclosure relates to a method of testing light-fidelity (LiFi) coverage. A mobile light-fidelity tester is moved in a test area in which at least one indoor light-fidelity access point is located while performing coverage tests of the at least one indoor light-fidelity access point. Further, a coverage report of the at least one indoor light-fidelity access point is returned. In addition, a test system is described. ## Claims ### Claim 1 A method of testing light-fidelity (LiFi) coverage, the method comprising the steps of: moving a mobile light-fidelity tester in a test area in which at least one indoor light-fidelity access point is located while performing coverage tests of the at least one indoor light-fidelity access point, wherein an interference is emulated while performing the coverage tests of the at least one indoor light-fidelity access point or wherein the coverage tests performed comprise measurements of Block Error Rate (BLER), signal strength, intensity, a Received Signal Strength Indicator (RSSI), a modulation scheme, an Error Vector Magnitude (EVM) and/or data throughput; and returning a coverage report of the at least one indoor light-fidelity access point. ### Claim 2 (depends on 1) The method according to claim 1, wherein the mobile light-fidelity tester receives light signals transmitted from the at least one indoor light-fidelity access point while moving in the test area and/or wherein the mobile light-fidelity tester transmits light signals to be received by the at least one indoor light-fidelity access point while the mobile light-fidelity tester is moving in the test area. ### Claim 3 (depends on 1) The method according to claim 1, wherein the light signals received by the light-fidelity tester and/or the at least one indoor light-fidelity access point are analyzed, thereby obtaining analysis results based on which the coverage report is generated. ### Claim 4 (depends on 1) The method according to claim 1, wherein receiving characteristics of the mobile light-fidelity tester are adapted during the testing. ### Claim 5 (depends on 4) The method according to claim 4, wherein the receiving characteristics of the mobile light-fidelity tester are adapted by modifying opacity properties of a dome covering a receiving photo diode of the mobile light-fidelity tester. ### Claim 6 (depends on 1) The method according to claim 1, wherein a position of the mobile light-fidelity tester is recoded while performing the coverage tests. ### Claim 7 (depends on 1) The method according to claim 1, wherein a movement of the mobile light-fidelity tester is actively controlled. ### Claim 8 A test system for testing light-fidelity (LiFi) coverage, wherein the test system comprises a mobile light-fidelity tester capable of moving in a test area in which at least one indoor light-fidelity access point is located while performing coverage tests of the at least one indoor light-fidelity access point, and at least one processing circuit that is capable of analyzing test results obtained from the coverage tests in order to generate a coverage report of the at least one indoor light-fidelity access point, wherein the mobile light-fidelity tester comprises a receiving photo diode, and wherein the receiving photo diode is surrounded by a dome, and wherein an opacity property of the dome is controllable, thereby enabling a modification of the opacity property of the dome. ### Claim 9 (depends on 8) The test system according to claim 8, wherein the mobile light-fidelity tester comprises a transmitting photo diode. ### Claim 10 (depends on 8) The test system according to claim 8, wherein the dome is made of an electrically switchable glass. ### Claim 11 (depends on 8) The test system according to claim 8, wherein the dome has an octagon shape. ### Claim 12 (depends on 8) The test system according to claim 8, wherein the processing circuit is integrated within the mobile light-fidelity tester. ### Claim 13 (depends on 8) The test system according to claim 8, wherein the mobile light-fidelity tester has a communication interface via which the mobile light-fidelity tester is connected to an analysis device that comprises the processing circuit. ### Claim 14 (depends on 8) The test system according to claim 8, wherein the mobile light-fidelity tester has a positioning sensor that is capable of providing position information of the mobile light-fidelity tester while moving in the test area. ### Claim 15 (depends on 8) The test system according to claim 8, wherein the processing circuit is capable of actively controlling a movement of the mobile light-fidelity tester. ### Claim 16 (depends on 8) The test system according to claim 8, wherein the test system comprises several indoor light-fidelity access points that are located in the test area. ### Claim 17 A test system for testing light-fidelity (LiFi) coverage, wherein the test system comprises a mobile light-fidelity tester capable of moving in a test area in which at least one indoor light-fidelity access point is located while performing coverage tests of the at least one indoor light-fidelity access point, and at least one processing circuit that is capable of analyzing test results obtained from the coverage tests in order to generate a coverage report of the at least one indoor light-fidelity access point, wherein the mobile light-fidelity tester is an unmanned vehicle that is configured to move autonomously within the test area based on control signals received.