# US 2022/0286984 A1 · Method and apparatus for reference signals in a measurement window > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0286984 A1 - Document ID: US20220286984A1 - Status: Published application - Kind: A1 - Application number: 17/632,224 - Filed: 2020-08-17 - Published: 2022-09-08 - Earliest claimed: 2019-08-15 - Assignees: Lenovo (Singapore) Pte. Ltd. - Applicants: Lenovo (Singapore) Pte. Ltd. - Inventors: Hyejung Jung; Alexander Johann Maria Golitschek Edler von Elbwart; Joachim Löhr; Vijay Nangia; Prateek Basu Mallick - Web page: https://patentgrep.com/patent/US20220286984A1 ## CPC - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04W 56/001: {Synchronization between nodes} - H04B 17/309: Measuring or estimating channel quality parameters - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 4/20: Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel - 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 Information of at least one measurement RS resource and measurement timing configuration can be received (510). An attempt can be made to detect (530) at least one measurement RS on the at least one measurement RS resource from downlink signals received (520) in a first measurement window. Measurements can be performed (540) on a first set of measurement RSs including at least one successfully detected measurement RS from the at least one measurement RS. A second set of measurement RSs can be identified (550) from the at least one measurement RS, where the second set of measurement RSs was not detected in the first measurement window. An attempt can be made to detect (560) at least the second set of measurement RSs in a second measurement window, where the second measurement window can start no earlier than an end of the first measurement window. ## Claims ### Claim 1 A method in a user equipment, the method comprising: receiving information of at least one measurement reference signal resource and measurement timing configuration; receiving downlink signals in a first measurement window; attempting to detect at least one measurement reference signal on the at least one measurement reference signal resource from the downlink signals received in the first measurement window; performing measurements on a first set of measurement reference signals from the at least one measurement reference signal, where the first set of measurement reference signals comprises at least one successfully detected measurement reference signal from the at least one measurement reference signal; identifying a second set of measurement reference signals from the at least one measurement reference signal, where the second set of measurement reference signals was not detected in the first measurement window; and attempting to detect at least the second set of measurement reference signals in a second measurement window, where the second measurement window starts no earlier than an end of the first measurement window. ### Claim 2 (depends on 1) The method according to claim 1, wherein the at least one measurement reference signal comprises at least one synchronization signal/physical broadcast channel block and the first measurement window corresponds to a discovery reference signal transmission window. ### Claim 3 (depends on 1) The method according to claim 1, wherein the second measurement window is located in a time interval between an end of the first measurement window and a start of a third measurement window, where the first and third measurement windows are periodically occurring consecutive measurement windows. ### Claim 4 (depends on 1) The method according to claim 1, further comprising: identifying a third set of measurement reference signals from the second set of measurement reference signal, where the third set of measurement reference signals was not detected in the second measurement window; and attempting to detect at least the third set of measurement reference signals in a third measurement window, where the third measurement window starts no earlier than an end of the second measurement window. ### Claim 5 (depends on 1) The method according to claim 1, wherein the information of the measurement timing configuration includes configuration information of periodically occurring measurement windows and includes configuration information of at least one auxiliary measurement window that can occur between periodically occurring consecutive measurement windows. ### Claim 6 (depends on 5) The method according to claim 5, wherein the configuration information of periodically occurring measurement windows includes at least one selected from a periodicity, a slot offset value, a subframe offset value, and a duration of periodically occurring measurement windows. ### Claim 7 (depends on 5) The method according to claim 5, wherein the configuration information of the at least one auxiliary measurement window includes at least one selected from a maximum number of auxiliary measurement windows within a period of periodically occurring measurement windows, at least one selected from slot and subframe offset values of the at least one auxiliary measurement window, and at least one duration corresponding to the at least one auxiliary measurement window. ### Claim 8 (depends on 1) The method according to claim 1, wherein attempting to detect at least the second set of measurement reference signals in the second measurement window further comprises: determining whether all of the at least one measurement reference signal are transmitted based on the at least one successfully detected measurement reference signal; and attempting to detect at least the second set of measurement reference signal in the second measurement window in response to determining that not all of the at least one measurement reference signal are transmitted. ### Claim 9 (depends on 1) The method according to claim 1, wherein the at least one measurement reference signal resource comprises at least one radio link monitoring reference signal resource, and wherein the measurements are radio link monitoring measurements. ### Claim 10 (depends on 9) The method according to claim 9, further comprising determining whether a radio link quality of an undetected measurement reference signal of the at least one measurement reference signal is worse than a threshold value associated with an out-of-sync indication. ### Claim 11 (depends on 10) The method according to claim 10, further comprising determining whether the undetected measurement reference signal has been transmitted, wherein determining whether a radio link quality of an undetected measurement reference signal of the at least one measurement reference signal is worse than a threshold value comprises determining that the radio link quality of the undetected measurement reference signal of the at least one measurement reference signal is worse than the threshold value only if the undetected measurement reference signal has been transmitted. ### Claim 12 (depends on 1) The method according to claim 1, further comprising: receiving an indication of a threshold value; and determining whether a measurement reference signal of the at least one measurement reference signal is detected based on the indicated threshold value. ### Claim 13 (depends on 12) The method according to claim 12, wherein the threshold value comprises a reference signal received power value. ### Claim 14 (depends on 1) The method according to claim 1, wherein the at least one measurement reference signal comprises at least one channel state information-reference signal. ### Claim 15 An apparatus comprising: a transceiver that receives information of at least one measurement reference signal resource and measurement timing configuration, and receives downlink signals in a first measurement window; and a controller coupled to the transceiver, where the controller attempts to detect at least one measurement reference signal on the at least one measurement reference signal resource from the downlink signals received in the first measurement window, performs measurements on a first set of measurement reference signals from the at least one measurement reference signal, where the first set of measurement reference signals comprises at least one successfully detected measurement reference signal from the at least one measurement reference signal, identifies a second set of measurement reference signals from the at least one measurement reference signal, where the second set of measurement reference signals was not detected in the first measurement window, and attempts to detect at least the second set of measurement reference signals in a second measurement window, where the second measurement window starts no earlier than an end of the first measurement window. ### Claim 16 (depends on 15) The apparatus according to claim 15, wherein the at least one measurement reference signal comprises at least one synchronization signal/physical broadcast channel block, and wherein the first measurement window corresponds to a discovery reference signal transmission window. ### Claim 17 (depends on 15) The apparatus according to claim 15, wherein the second measurement window is located in a time interval between an end of the first measurement window and a start of a third measurement window, where the first and third measurement windows are periodically occurring consecutive measurement windows. ### Claim 18 (depends on 15) The apparatus according to claim 15, wherein the controller identifies a third set of measurement reference signals from the second set of measurement reference signal, where the third set of measurement reference signals was not detected in the second measurement window, and attempts to detect at least the third set of measurement reference signals in a third measurement window, where the third measurement window starts no earlier than an end of the second measurement window. ### Claim 19 (depends on 15) The apparatus according to claim 15, wherein the information of the measurement timing configuration includes configuration information of periodically occurring measurement windows and includes configuration information of at least one auxiliary measurement window that can occur between periodically occurring consecutive measurement windows. ### Claim 20 (depends on 15) The apparatus according to claim 15, wherein the controller attempts to detect at least the second set of measurement reference signals in the second measurement window by determining whether all of the at least one measurement reference signal are transmitted based on the at least one successfully detected measurement reference signal, and attempting to detect at least the second set of measurement reference signal in the second measurement window in response to determining that not all of the at least one measurement reference signal are transmitted.