# US 2021/0345146 A1 · Measurement gap management for ssb and csi-rs based rrm measurement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0345146 A1 - Document ID: US20210345146A1 - Status: Published application - Kind: A1 - Application number: 17/266,903 - Filed: 2018-08-17 - Published: 2021-11-04 - Earliest claimed: 2018-08-17 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Jing HE; Lars DALSGAARD; Li ZHANG - Web page: https://patentgrep.com/patent/US20210345146A1 ## CPC - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04W 36/0094: {Definition of hand-off measurement parameters} - H04W 56/001: {Synchronization between nodes} - 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) - H04B: TRANSMISSION ## Abstract A method includes: receiving, at a user equipment, a first information of a first gap for a first reference signal to be measured and a second information of a second gap for a second reference signal to be measured, wherein the first gap and the second gap overlap at least partially; and, determining at least one of: a first duration of a gap length based on a union of the first gap and the second gap, and a second duration of a gap length based on a selection of the first gap or the second gap corresponding to one of the first reference signal and the second reference signal. ## Claims ### Claim at position 1 1-34. (canceled) ### Claim 35 An apparatus, comprising: at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: receive a first information of a first gap for a first reference signal to be measured and a second information of a second gap for a second reference signal to be measured, wherein the first gap and the second gap overlap at least partially; and, determine at least one of: a first duration of a gap length based on a union of the first gap and the second gap, or a second duration of a gap length based on a selection of the first gap or the second gap corresponding to one of the first reference signal and the second reference signal. ### Claim 36 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to determine a duration of an interruption time in received downlink data and transmitted uplink data based on at least one of the determined first duration of the gap length or the determined second duration of the gap length. ### Claim 37 (depends on 36) The apparatus of claim 36, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to determine the duration of the interruption time based on either the determined first duration of the gap length or the determined second duration of the gap length depending upon a type of a gap. ### Claim 38 (depends on 36) The apparatus of claim 36, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to determine the duration of the interruption time based on non-gap measurement determined from at least one of the first reference signal or the second reference signal. ### Claim 39 (depends on 35) The apparatus of claim 35, wherein the determined first duration of the gap length based on the union of the first gap and the second gap comprises a summation of a length of the first gap and a length of the second gap minus an overlap time between the length of the first gap and the length of the second gap. ### Claim 40 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to measure the first reference signal and the second reference signal in the determined first duration of the gap length based on the union of the first gap and the second gap. ### Claim 41 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to measure the first reference signal and the second reference signal during the determined first duration of the gap length according to one of a network indicated share ratio and a default ratio. ### Claim 42 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to measure a reference signal and to determine the second duration of the gap length based on a system frame number of the overlap of the first gap and the second gap. ### Claim 43 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to measure the reference signal and to determine the second duration of the gap length based on: mod(floor(SFN/MGRP),N)=0, . . . , M wherein MGRP is a periodicity of the overlap of the first gap and the second gap, and M and N are integer numbers that share a ratio between a measurement of the first reference signal and the second reference signal; and wherein if a system frame number of the overlap of the first gap and the second gap satisfies this condition, the first reference signal is measured and the second duration of the gap length is determined to be duration of the first gap. ### Claim 44 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to measure the reference signal and to determine the second duration of the gap length based on: mod(floor(SFN/MGRP),N)=M+1, . . . , N−1 wherein MGRP is a periodicity of the overlap of the first gap and the second gap, and M and N are integer numbers that share a ratio between a measurement of the first reference signal and the second reference signal; and wherein if a system frame number of the overlap of the first gap and the second gap satisfies this condition, the second reference signal is measured and the second duration of the gap length is determined to be duration of the second gap. ### Claim 45 (depends on 35) The apparatus of claim 35, wherein the first reference signal measured by the apparatus comprises a synchronization signal and physical broadcast channel block. ### Claim 46 (depends on 35) The apparatus of claim 35, wherein the second reference signal measured by the apparatus comprises a channel state information reference signal. ### Claim 47 (depends on 35) The apparatus of claim 35, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to measure at least one of the first reference signal or the second reference signal based on the at least one of the determined first duration of the gap length or the determined second duration of the gap length. ### Claim 48 A method, comprising: receiving, at a user equipment, a first information of a first gap for a first reference signal to be measured and a second information of a second gap for a second reference signal to be measured, wherein the first gap and the second gap overlap at least partially; and, determining at least one of: a first duration of a gap length based on a union of the first gap and the second gap, or a second duration of a gap length based on a selection of the first gap or the second gap corresponding to one of the first reference signal and the second reference signal. ### Claim 49 (depends on 48) The method of claim 48, further comprising determining a duration of an interruption time in received downlink data and transmitted uplink data based on at least one of the determined first duration of the gap length or the determined second duration of the gap length. ### Claim 50 (depends on 48) The method of claim 48, wherein the determined first duration of the gap length based on the union of the first gap and the second gap comprises a summation of a length of the first gap and a length of the second gap minus an overlap time between the length of the first gap and the length of the second gap. ### Claim 51 (depends on 48) The method of claim 48, further comprising measuring the first reference signal and the second reference signal in the determined first duration of the gap length based on the union of the first gap and the second gap. ### Claim 52 (depends on 48) The method of claim 48, further comprising measuring the first reference signal and the second reference signal during the determined first duration of the gap length according to one of a network indicated share ratio and a default ratio. ### Claim 53 (depends on 48) The method of claim 48, wherein a reference signal to be measured and the second duration of the gap length is determined based on a system frame number of the overlap of the first gap and the second gap. ### Claim 54 An apparatus, comprising: at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: configure a first gap for a first reference signal to be measured and a second gap for a second reference signal to be measured, wherein the first gap and the second gap overlap at least partially; and, receive a measurement result of at least one of the first reference signal or the second reference signal, wherein the measurement result is based on measurement made based on at least one of: a first duration of a gap length based on a union of the first gap and the second gap, or a second duration of a gap length based on a selection of the first gap or the second gap corresponding to one of the first reference signal and the second reference signal.