# US 12,120,573 B2 · Cell reselection and measurement in a high-speed mode in wireless communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,573 B2 - Document ID: US12120573B2 - Status: Granted - Kind: B2 - Application number: 17/441,689 - Filed: 2021-01-13 - Published: 2023-04-13 - Granted: 2024-10-15 - Earliest claimed: 2021-01-13 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Huaning Niu; Qiming Li; Dawei Zhang; Jie Cui; Manasa Raghavan; Xiang Chen; Yang Tang - Web page: https://patentgrep.com/patent/US12120573B2 ## CPC - H04W 36/0085: {Hand-off measurements} - H04W 48/20: Selecting an access point - H04W 36/32: by location or mobility data, e.g. speed data - H04W 36/322: {by location data} - H04W 36/324: {by mobility data, e.g. speed data} - H04W 48/12: using downlink control channel - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract The present application relates to devices and components including apparatus, systems, and methods to perform cell reselection. In an example, timing requirements for synchronization signal processing are defined based on a beam sweeping capability of the device. Synchronization signals are received and processed according to the timing requirements to complete a cell reselection procedure. In another example, location data of the device is used to look up a database of cell identifiers. A cell identifier is determined based on the look-up and a cell reselection procedure is performed using the cell identifier. ## Claims ### Claim 1 A method comprising: determining that an operational mode of a device is a high-speed mode that supports a travel speed larger than a speed threshold; detecting a synchronization signal at a frequency range 2 (FR2) band within a time period that is associated with cell reselection in the FR2 band, wherein the time period is associated with the high-speed mode, is defined based on a beam-sweeping capability of the device in the FR2 band, and includes a measurement period that is defined for the FR2 band and that is associated with a discontinuous reception (DRX) cycle length; and completing a cell reselection procedure based on the synchronization signal. ### Claim 2 (depends on 1) The method of claim 1, wherein the FR2 band between 24,250 NMH, and 52,600 MHz, and wherein the beam-sweeping capability indicates that the device is capable of using a reduced set of beams for beam-sweeping. ### Claim 3 (depends on 1) The method of claim 1, wherein the device is in an inactive mode or an idle mode while also being in the high-speed mode, the synchronization signal is associated with a cell, and the method further comprises: performing a first number of synchronization signal reference signal received power (SS-RSRP) measurements and reference synchronization signal received quality (SS-RSRQ) measurements, wherein an SS-RSRP measurement of the SS-RSRP measurements and an SS-RSRQ measurement of the SS-RSRQ measurements correspond to the synchronization signal; performing a second number of cell evaluations based on the SS-RSRP measurements and the SS-RSRQ measurements; and selecting the cell to camp on based on the cell evaluations. ### Claim 4 (depends on 3) The method of claim 3, wherein the first number or the second number is based on the beam-sweeping capability of the device. ### Claim 5 (depends on 3) The method of claim 3, further comprising: determining a detection period and an evaluation period, wherein the detection period and the evaluation period are defined based on the beam-sweeping capability of the device. ### Claim 6 (depends on 5) The method of claim 5, wherein the first number or the second number is based on the detection period, the measurement period, and the evaluation period. ### Claim 7 (depends on 1) The method of claim 1, wherein the beam-sweeping capability is a receive beam-sweeping capability, and the method further comprises: reporting the receive beam-sweeping capability to a base station. ### Claim 8 (depends on 7) The method of claim 7, wherein the method further comprises: processing radio resource control (RRC) signaling that is receives from the base station and that indicates the DRX cycle length based on the receive beam-sweeping capability. ### Claim 9 (depends on 8) The method of claim 8, wherein the measurement period is further defined based on the DRX cycle length. ### Claim 10 One or more non-transitory computer-readable storage media storing instructions, that upon execution on a device, cause the device to perform operations comprising: determining that an operational mode of the device is a high-speed mode that supports a travel speed larger than a speed threshold; determining, based on the high-speed mode, a time period associated with cell reselection in a frequency range 2 (FR2) band, wherein the time period is defined based on a beam-sweeping capability of the device in the FR2 band and includes a measurement period that is defined for the FR2 band and that is associated with a discontinuous reception (DRX) cycle length; detecting, within the time period, a synchronization signal at the FR2 band; and completing a cell reselection procedure based on the synchronization signal. ### Claim 11 (depends on 10) The one or more non-transitory computer-readable storage media of claim 10, wherein the measurement period is defined in a table, and wherein the table associates the measurement period with the DRX cycle length, a detection duration, and an evaluation duration. ### Claim 12 (depends on 11) The one or more non-transitory computer-readable storage media of claim 11, wherein each of the measurement period, the detection duration, and the evaluation duration are defined in the table as a function of the beam-sweeping capability. ### Claim 13 (depends on 10) The one or more non-transitory computer-readable storage media of claim 10, wherein the device is in an inactive mode or an idle mode while also being in the high-speed mode, the time period is a detection period, the operations further comprise performing inter-frequency measurement based on the synchronization signal, the cell reselection procedure is completed within the detection period, and a relaxation value for the detection period is unavailable or reduced in the inactive mode or the idle mode while the device is also in the high-speed mode. ### Claim 14 (depends on 10) The one or more non-transitory computer readable storage media of claim 10, wherein the device is in an inactive mode or an idle mode while also being in the high-speed mode, the operations further comprise: performing a synchronization signal reference signal received power (SS-RSRP) measurement and a reference synchronization signal received quality (SS-RSRQ) measurement, and comparing the SS-RSRP measurement with a first measurement threshold, and the SS-RSRQ measurement with a second measurement threshold, wherein the first measurement threshold or the second measurement threshold is based on the high-speed mode. ### Claim 15 A device comprising: processing circuitry configured to: determine that an operational mode of the device is a high-speed mode that supports a travel speed larger than a speed threshold; detect a synchronization signal at a frequency range 2 (FR2) band within a time period that is associated with cell reselection in the FR2 band or with a measurement to be performed on the synchronization signal, wherein the time period is associated with the high-speed mode, is defined based on a beam-sweeping capability of the device in the FR2 band, and includes a measurement period that is defined for the FR2 band and that is associated with a discontinuous reception (DRX) cycle length; and complete a cell reselection procedure based on the synchronization signal or report the measurement performed on the synchronization signal. ### Claim 16 (depends on 15) The device of claim 15, wherein the device is in a connected node while also being in the high-speed mode, the measurement is reported to a base station, and the time period is a primary synchronization signal (PSS)/secondary synchronization signal (SSS) detection period, a measurement period for intra-frequency measurements, a measurement period for inter-frequency measurements, or a measurement period for layer 1 signal-to-interference and noise ratio (L1-SINR) reporting with synchronization signal block (SSB) based channel measurement resource (CMR) and dedicated interference measurement (IMR) configured. ### Claim 17 (depends on 15) The device of claim 15, wherein the device is in a connected mode while also being in the high-speed mode, the measurement period is defined in a table, the table is defined for the FR2 band and associates the time period with the DRX cycle length. ### Claim 18 (depends on 17) The device of claim 17, wherein the time period is defined in the table based on the beam-sweeping capability of the device. ### Claim 19 (depends on 17) The device of claim 17, wherein the time period is defined in the table based on a number of measurements to perform, and wherein a value of the number is reduced in the high-speed mode based on the beam-sweeping capability of the device. ### Claim 20 (depends on 15) The device of claim 15, wherein the device is in a connected mode while also being in the high-speed mode, and the processing circuitry is further configured to report the beam-sweeping capability to a base station.