# US 11,122,577 B2 · Initial acquisition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,577 B2 - Document ID: US11122577B2 - Status: Granted - Kind: B2 - Application number: 16/370,704 - Filed: 2019-03-29 - Published: 2020-10-01 - Granted: 2021-09-14 - Earliest claimed: 2019-03-29 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Satashu Goel; Arvind Vardarajan Santhanam; Yongle Wu; Daniel Amerga; Sindhu Satyan; Danyang Cong; Sunitha Sundaram - Web page: https://patentgrep.com/patent/US11122577B2 ## CPC - H04W 56/0015: {one node acting as a reference for the others} - H04W 72/563: of the wireless resources - H04W 40/246: {Connectivity information discovery} - H04W 56/0005: {synchronizing of arrival of multiple uplinks} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/56: based on priority criteria - H04W 48/16: Discovering, processing access restriction or access information - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a synchronization signal block associated with a first channel number as part of a scan, wherein the synchronization signal block indicates a second channel number corresponding to a cell-defining synchronization signal block. The UE may attempt acquisition for the cell-defining synchronization signal block at an elevated priority level based at least in part on the synchronization signal block indicating the second channel number. Numerous other aspects are provided. ## Claims ### Claim 1 A method of wireless communication performed by a user equipment (UE), comprising: receiving a synchronization signal block associated with a first channel number as part of a scan, wherein the synchronization signal block indicates a second channel number corresponding to a cell-defining synchronization signal block; attempting a first acquisition for the cell-defining synchronization signal block at an elevated priority level based at least in part on the synchronization signal block indicating the second channel number and based at least in part on a timer, wherein attempting the first acquisition for the cell-defining synchronization signal block at the elevated priority level based at least in on part on the timer comprises: skipping one or more channels between a first channel and a second channel for a length of time across search attempts, wherein the first channel corresponds to the first channel number and the second channel corresponds to the second channel number; and attempting, based at least in part on the cell-defining synchronization signal block not being acquired after skipping the one or more channels between the first channel and the second channel and based at least in part on the timer, a second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel. ### Claim 2 (depends on 1) The method of claim 1, wherein attempting the first acquisition for the cell-defining synchronization signal block at the elevated priority level is based at least in part on a number of times that the UE has previously scanned for another cell-defining synchronization signal block at the elevated priority level without identifying the other cell-defining synchronization signal block. ### Claim 3 (depends on 1) The method of claim 1, wherein attempting the first acquisition for the cell-defining synchronization signal block at the elevated priority level is based at least in part on a number of scans performed since a previous scan was performed at the elevated priority level without identifying another cell-defining synchronization signal block. ### Claim 4 (depends on 1) The method of claim 1, wherein attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel comprises: selectively continuing the scan at a next channel after the first channel based at least in part on the timer. ### Claim 5 (depends on 1) The method of claim 1, wherein attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel comprises: selectively continuing the scan at a next channel after the first channel based at least in part on a number of scans performed since a previous scan was continued from a channel associated with another cell-defining synchronization signal block. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining that the first acquisition is to be attempted at the elevated priority level. ### Claim 7 (depends on 6) The method of claim 6, wherein determining that the first acquisition is to be attempted at the elevated priority level is based at least in part on at least one of: a cell of the UE, a tracking area or routing area of the UE, a mobile network of the UE, or a geographical area of the UE. ### Claim 8 (depends on 1) The method of claim 1, further comprising: determining, after a threshold number of attempts, that the cell-defining synchronization signal block is not acquired at the second channel; and wherein attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel comprises: attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel based at least in part on determining that the cell-defining synchronization signal block is not received at the second channel after the threshold number of attempts. ### Claim 9 (depends on 1) The method of claim 1, further comprising: acquiring the cell-defining synchronization signal block at a channel other than ene the second channel; and identifying a network misconfiguration based at least in part on acquiring the cell-defining synchronization signal block at the channel other than the second channel. ### Claim 10 (depends on 9) The method of claim 9, further comprising: receiving information identifying another channel number associated with another cell-defining synchronization signal block; and determining that acquisition of the other cell-defining synchronization signal block is not to be prioritized based at least in part on the network misconfiguration. ### Claim 11 (depends on 1) The method of claim 1, further comprising: performing the scan for a New Radio (NR) radio access technology (RAT); and performing a scan for another RAT, other than the NR RAT, during the scan for the NR RAT. ### Claim 12 (depends on 1) The method of claim 1, further comprising: performing the scan for a New Radio (NR) radio access technology (RAT), wherein a frequency range associated with another RAT other than the NR RAT is skipped during the scan. ### Claim 13 (depends on 1) The method of claim 1, further comprising: performing the scan for multiple channel numbers in parallel. ### Claim 14 (depends on 1) The method of claim 1, further comprising: performing the scan based at least in part on a scanning order, wherein the scanning order is based at least in part on a previous scan or frequencies to be scanned as part of the scan. ### Claim 15 A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the memory and the one or more processors configured to: receive a synchronization signal block associated with a first channel number as part of a scan, wherein the synchronization signal block indicates a second channel number corresponding to a cell-defining synchronization signal block; attempt a first acquisition for the cell-defining synchronization signal block at an elevated priority level based at least in part on the synchronization signal block indicating the second channel number and based at least in part on a timer, wherein the one or more processors, when attempting the first acquisition for the cell-defining synchronization signal block at the elevated priority level based at least in on part on the timer, are configured to: skip one or more channels between a first channel and a second channel for a length of time across search attempts, wherein the first channel corresponds to the first channel number and the second channel corresponds to the second channel number; and attempt, based at least in part on the cell-defining synchronization signal block not being acquired after skipping the one or more channels between the first channel and the second channel and based at least in part on the timer, a second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel. ### Claim 16 (depends on 15) The UE of claim 15, wherein the one or more processors, when attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel, are configured to: selectively continue the scan at a next channel after the first channel based at least in part on the timer. ### Claim 17 (depends on 15) The UE of claim 15, wherein the one or more processors, when attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel, are configured to: selectively continue the scan at a next channel after the first channel based at least in part on a number of scans performed since a previous scan was continued from a channel associated with another cell-defining synchronization signal block without identifying the other cell-defining synchronization signal block. ### Claim 18 (depends on 15) The UE of claim 15, wherein the one or more processors are further configured to: determine that the scan is to be performed at the elevated priority level. ### Claim 19 (depends on 18) The UE of claim 18, wherein the determination that the scan is to be performed at the elevated priority level is based at least in part on at least one of: a cell of the UE, a tracking area or routing area of the UE, a mobile network of the UE, or a geographical area of the UE. ### Claim 20 (depends on 15) The UE of claim 15, wherein the one or more processors are further configured to: determine, after a threshold number of attempts, that the cell-defining synchronization signal block is not acquired at the second channel; and perform a scan for the one or more channels between the first channel and the second channel based at least in part on determining that the cell-defining synchronization signal block is not received at the second channel after the threshold number of attempts. ### Claim 21 An apparatus for wireless communication, comprising: means for receiving a synchronization signal block associated with a first channel number as part of a scan, wherein the synchronization signal block indicates a second channel number corresponding to a cell-defining synchronization signal block; means for attempting a first acquisition for the cell-defining synchronization signal block at an elevated priority level based at least in part on the synchronization signal block indicating the second channel number and based at least in part on a timer, wherein the means for attempting the first acquisition for the cell-defining synchronization signal block at the elevated priority level based at least in on part on the timer comprises: means for skipping one or more channels between a first channel and a second channel for a length of time across search attempts, wherein the first channel corresponds to the first channel number and the second channel corresponds to the second channel number; and means for attempting, based at least in part on the cell-defining synchronization signal block not being acquired after skipping the one or more channels between the first channel and the second channel and based at least in part on the timer, a second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein the means for attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel comprises: means for selectively continuing the scan at a next channel after the first channel based at least in part on the timer. ### Claim 23 (depends on 21) The apparatus of claim 21, wherein the means for attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel comprises: means for selectively continuing the scan at a next channel after the first channel based at least in part on a number of scans performed since a previous scan was continued from a channel associated with another cell-defining synchronization signal block. ### Claim 24 (depends on 21) The apparatus of claim 21, further comprising: means for determining that the scan is to be performed at the elevated priority level. ### Claim 25 (depends on 21) The apparatus of claim 21, further comprising: means for determining, after a threshold number of attempts, that the cell-defining synchronization signal block is not received at the second channel; and wherein the means for attempting the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel comprises: means for performing the scan for the one or more channels between the first channel and the second channel based at least in part on determining that the cell-defining synchronization signal block is not received at the second channel after the threshold number of attempts. ### Claim 26 A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to: receive a synchronization signal block associated with a first channel number as part of a scan, wherein the synchronization signal block indicates a second channel number corresponding to a cell-defining synchronization signal block; attempt a first acquisition for the cell-defining synchronization signal block at an elevated priority level based at least in part on the synchronization signal block indicating the second channel number and based at least in part on a timer, wherein the one or more instructions, that cause the one or more processors to attempt the first acquisition for the cell-defining synchronization signal block at the elevated priority level based at least in on part on the timer, cause the one or more processors to: skip one or more channels between a first channel and a second channel for a length of time across search attempts, wherein the first channel corresponds to the first channel number and the second channel corresponds to the second channel number; and attempt, based at least in part on the cell-defining synchronization signal block not being acquired after skipping the one or more channels between the first channel and the second channel and based at least in part on the timer, a second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel. ### Claim 27 (depends on 26) The non-transitory computer-readable medium of claim 26, wherein the one or more instructions, that cause the one or more processors to attempt the first acquisition for the cell-defining synchronization signal block at the elevated priority level, cause the one or more processors to: attempt the first acquisition for the cell-defining synchronization signal block at the elevated priority level based at least in part on a number of times that the UE has previously scanned for another cell-defining synchronization signal block at the elevated priority level without identifying the other cell-defining synchronization signal block. ### Claim 28 (depends on 26) The non-transitory computer-readable medium of claim 26, wherein the one or more instructions, that cause the one or more processors to attempt the first acquisition for the cell-defining synchronization signal block at the elevated priority level, cause the one or more processors to: attempt the first acquisition for the cell-defining synchronization signal block at the elevated priority level based at least in part on a number of scans performed since a previous scan was performed at the elevated priority level without identifying another cell-defining synchronization signal block. ### Claim 29 (depends on 26) The non-transitory computer-readable medium of claim 26, wherein the one or more instructions, that cause the one or more processors to attempt the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel, cause the one or more processors to: selectively continue the scan at a next channel after the first channel based at least in part on a number of scans performed since a previous scan was continued from a channel associated with another cell-defining synchronization signal block without identifying the other cell-defining synchronization signal block. ### Claim 30 (depends on 26) The non-transitory computer-readable medium of claim 26, wherein the one or more instructions, when executed by the one or more processors, further cause the one or more processors to: determine, after a threshold number of attempts, that the cell-defining synchronization signal block is not acquired at the second channel number; and wherein the one or more instructions, that cause the one or more processors to attempt the second acquisition for the cell-defining synchronization signal block on the one or more channels between the first channel and the second channel, cause the one or more processors to: perform a scan for the one or more channels between the first channel and the second channel based at least in part on determining that the cell-defining synchronization signal block is not received at the second channel number after the threshold number of attempts.