Method and apparatus for determining a period of cell measurements

Abstract

Aspects of the present disclosure provide a method of wireless communication by a user equipment (UE). The method generally includes receiving a measurement configuration, where the measurement configuration indicates at least one or more frequency bands; determining a periodicity for measuring the at least one or more frequency bands based on one or more parameters; and performing measurements of the at least one or more frequency bands according to the determined periodicity.

Description

[0001] Priority Statement

[0002] This application claims priority to U.S. Application No. 17 / 376,092, filed July 14, 2021, which claims the rights and priorities of U.S. Provisional Application No. 63 / 052,454, filed July 15, 2020, and U.S. Provisional Application No. 63 / 052,790, filed July 16, 2020, the entire contents of which are expressly incorporated herein by reference, as set forth below, and for all applicable purposes. Technical Field

[0003] Various aspects of this disclosure relate to wireless communications, and more specifically, to techniques that can help improve power efficiency by controlling the period / rate of performing cell search and measurement. Background Technology

[0004] Wireless communication networks are widely deployed to provide various communication services, such as telephone, video, data, messaging, and broadcasting. These wireless communication systems can employ multiple access technologies, which enable communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power). Examples of such multiple access systems include 3GPP Long Term Evolution (LTE) systems, LTE-A Advanced systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate at the city, national, regional, and even global levels. New radio technologies, such as 5G NR, are examples of emerging telecommunications standards. NR is a series of enhancements to the LTE mobile standard released by 3GPP. NR aims to better support mobile broadband internet access by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) in both downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0006] However, with the continued growth in demand for mobile broadband access, further improvements to NR and LTE technologies are needed. Preferably, these improvements should be applicable to other multiple access technologies and telecommunications standards that employ these technologies.

[0007] The UE can be configured to perform measurements on various frequencies configured by the base station for various purposes. For example, the UE can detect cells by measuring and evaluating synchronization signals, thereby performing cell search. Once a cell is detected, the UE can perform cell measurements for cell selection or reselection purposes. Summary of the Invention

[0008] The systems, methods, and apparatus disclosed herein each have several innovative aspects, none of which is the sole reason for the desired properties.

[0009] Certain aspects of the subject matter described in this disclosure can be implemented by a user equipment (UE) in a method for wireless communication. The method generally includes receiving a measurement configuration indicating at least one or more frequencies; determining a period for measuring the at least one or more frequencies based on one or more parameters; and performing a measurement of the at least one or more frequencies according to the determined period.

[0010] According to some aspects, the one or more parameters include whether a cell was detected on one of the at least one or more frequencies during the time period, and wherein determining the period includes increasing the period used to measure the at least one or more frequencies if no cell was detected on the at least one or more frequencies during the time period. According to some aspects, determining the period also includes decreasing the period used to measure the at least one or more frequencies if a cell was detected on the at least one or more frequencies during the time period.

[0011] According to some aspects, the one or more parameters include whether the measurement of the signal quality metric of the strongest cell, determined based on a signal quality metric, in the at least one or more frequencies within a time period is less than a threshold, and wherein determining the period includes increasing the period for performing measurements on the at least one or more frequencies if the measurement of the strongest cell is less than the threshold within that time period. According to some aspects, determining the period also includes decreasing the period for performing measurements on the at least one or more frequencies if the measurement of the strongest cell is at or above the threshold within that time period.

[0012] According to certain aspects, at least one parameter includes at least one of the following: the charging state of the UE, the battery level of the UE, the display state of the UE, or the performance mode indicated by the user.

[0013] According to certain aspects, at least one parameter includes at least one of the following: the UE's service activity, or inputs from one or more sensors of the UE indicating whether the UE is moving or not.

[0014] Depending on some aspects, at least one parameter includes at least one of historical measurement data in a cell associated with one or more frequencies or the physical location of the UE.

[0015] Depending on some aspects, the method may also include triangulation based on reference signal measurements, location determination based on Basic Service Set ID (BSSID), or Global Positioning System (GPS) input and prior information about cell coverage associated with physical location to determine the UE's physical location.

[0016] Depending on certain aspects, at least one parameter includes at least one of the following: the UE's baseband capability or radio frequency (RF) capability; or the measurement is performed for asynchronous cell search or synchronous cell search.

[0017] Determining the period, depending on certain factors, involves simultaneously performing scheduling measurements on one or more frequencies.

[0018] According to certain aspects, a measurement configuration is received via a first radio access technology (RAT); and the measurement configuration indicates one or more frequencies associated with a second RAT.

[0019] Depending on some aspects, the measurement configuration includes the measurement gap.

[0020] According to some aspects, the first RAT includes the Long Term Evolution (LTE) RAT, and the second RAT includes the New Radio (NR) RAT.

[0021] Depending on certain aspects, measurements are performed at millimeter-wave (mmW) frequencies.

[0022] According to some aspects, the method further includes identifying a first group of frequencies having a first measurement period; and identifying a second group of frequencies having a second measurement period; wherein determining the period includes moving a frequency from the first group to the second group or from the second group to the first group. According to some aspects, the first period is shorter than the second period. According to some aspects, within at least one of the first or second groups, at least some frequencies are determined for measurement at different periods. According to some aspects, the first group includes an active frequency group for cell search; the second group includes a dormant frequency group for cell search. According to some aspects, a frequency is moved from the dormant group to the active group based on cell detection in the frequency. According to some aspects, the first group includes an active frequency group for cell measurement; the second group includes a dormant frequency group for cell measurement. According to some aspects, a frequency is moved from the dormant group to the active group based on cell measurement in the frequency satisfying one or more threshold criteria.

[0023] Certain aspects of the subject matter described in this disclosure can be implemented by a UE in an apparatus for wireless communication. The apparatus typically includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to receive a measurement configuration indicating at least one or more frequencies; determine a period for measuring the at least one or more frequencies based on one or more parameters; and perform a measurement of the at least one or more frequencies according to the determined period.

[0024] Certain aspects of the subject matter described in this disclosure can be implemented by a UE in an apparatus for wireless communication. The apparatus typically includes: components for receiving a measurement configuration indicating at least one or more frequencies; components for determining a period for measuring the at least one or more frequencies based on one or more parameters; and components for performing a measurement of the at least one or more frequencies according to the determined period.

[0025] Certain aspects of the subject matter described in this disclosure may be implemented in a computer-readable medium having instructions stored thereon for receiving a measurement configuration indicating at least one or more frequencies; determining a period for measuring the at least one or more frequencies based on one or more parameters; and performing a measurement of the at least one or more frequencies according to the determined period.

[0026] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and drawings set forth certain illustrative features of one or more aspects in detail. However, these features indicate only a few of the various ways in which the principles of each aspect can be employed. Attached Figure Description

[0027] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the following description. However, the drawings illustrate only some typical aspects of this disclosure and should not be considered as limiting its scope. Other features, aspects, and advantages will become apparent from the description, drawings, and claims.

[0028] Figure 1 An example wireless communication network in which some aspects of this disclosure can be implemented is shown.

[0029] Figure 2 Block diagrams illustrating example base stations (BS) and example user equipment (UE) according to some aspects of this disclosure are shown.

[0030] Figure 3A An example of a frame format for a telecommunications system is shown.

[0031] Figure 3BThis demonstrates how to use different beams to transmit different synchronization signal blocks (SSBs).

[0032] Figure 4 Example operations of a UE performing wireless communication are shown in accordance with some aspects of this disclosure.

[0033] Figure 4A and Figure 4B An example of determining the measurement period according to some aspects of this disclosure is shown.

[0034] Figure 5A and Figure 5B The activity and dormant cell search measurement frequency group is shown according to various aspects of this disclosure.

[0035] Figure 6 A communication device according to various aspects of this disclosure is shown, which may include various components configured to perform operations of the techniques disclosed herein.

[0036] For ease of understanding, the same reference numerals are used to denote the same elements in the figures where possible. It is conceivable that elements disclosed in one aspect may be beneficially used in other aspects without special indication. Detailed Implementation

[0037] This disclosure relates in various aspects to wireless communications, and more specifically, to improving power usage for cell search and cell measurements performed at certain frequencies. As will be described in further detail herein, the rate (or period) of measurement can be controlled based on certain conditions or parameters.

[0038] The following description provides only examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this disclosure. Various procedures or components may be appropriately omitted, substituted, or added to the various examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Moreover, the scope of this disclosure is intended to cover such apparatuses or methods that are practiced using structures, functions, or structures and functions other than those set forth herein. It should be understood that any aspect of the disclosure herein may be embodied by one or more elements of the claims.

[0039] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific Radio Access Technology (RAT) and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, subcarrier, channel, tone, subband, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, a 5G NR RAT network may be deployed.

[0040] Figure 1 An example wireless communication network 100 is shown, in which aspects of this disclosure can be implemented. For example, as Figure 1 As shown, UE 120a may include a measurement module 122, which can be configured to perform (or cause UE 120a to perform). Figure 4 Operation 400.

[0041] NR access (e.g., 5G NR) can support a variety of wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80 MHz or higher), millimeter wave (mmW) targeting high carrier frequencies (e.g., 25 GHz or higher), massive machine-type communication (mMTC) targeting non-backward compatible MTC technologies, or mission-critical services targeting ultra-reliable low-latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet their respective quality of service (QoS) requirements. Furthermore, these services can coexist in the same time-domain resources (e.g., time slots or subframes) or frequency-domain resources (e.g., component carriers).

[0042] like Figure 1 As shown, the wireless communication network 100 may include multiple base stations (BSs) 110a-110z (each base station is also individually referred to herein as BS 110 or collectively as BS 110) and other network entities. BS 110 may provide communication coverage for a specific geographic area (sometimes referred to as a "cell"), which may be fixed or mobile depending on the location of the mobile BS 110. In some examples, BS 110 may interconnect with each other or connect to one or more other BSs or network nodes (not shown) in the wireless communication network 100 using any suitable transport network through various types of backhaul interfaces (e.g., direct physical connection, wireless connection, virtual network, etc.). Figure 1In the example shown, BS 110a, 110b, and 110c can be macro BSs of macro cells 102a, 102b, and 102c, respectively. BS 110x can be a pico BS of pico cell 102x. BS 110y and 110z can be femto BSs of femto cells 102y and 102z, respectively. A BS can support one or more cells. BS 110 communicates with user equipment (UEs) 120a-120y (each of which is also individually referred to as UE 120a or collectively as UE 120) in the wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) can be distributed throughout the wireless communication network 100, and each UE 120a can be fixed or mobile.

[0043] The wireless communication network 100 may also include a relay station (e.g., relay station 110r), also known as a relay, which receives data or other information transmissions from an upstream station (e.g., BS 110a or UE 120r) and sends data or other information transmissions to a downstream station (e.g., UE 120a or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0044] Network controller 130 can be coupled to a group of BSs 110 and can provide coordination and control for these BSs 110. Network controller 130 can communicate with BSs 110 via backhaul. BSs 110 can also communicate with each other via wireless or wired backhaul (e.g., directly or indirectly).

[0045] Figure 2 Block diagrams illustrating components of an example base station (BS) and an example UE according to some aspects of this disclosure are shown. For example, as Figure 1 As shown, UE 120a may have a controller / processor 280, which has a measurement module 122 configured to perform (or cause UE 120a to perform). Figure 4 Operation 400.

[0046] In BS 110, the transmit processor 220 can receive data from data source 212 and control information from controller / processor 240. The control information can be used for the Physical Broadcast Channel (PBCH), Physical Control Format Indication Channel (PCFICH), Physical Hybrid ARQ Indication Channel (PHICH), Physical Downlink Control Channel (PDCCH), Group Common PDCCH (GC PDCCH), etc. This data can also be used for the Physical Downlink Shared Channel (PDSCH), etc. Processor 220 can process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. Transmit processor 220 can also generate reference symbols for, for example, the Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Cell-Specific Reference Signal (CRS). If applicable, transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, or reference symbols, and can provide an output symbol stream to modulators (MODs) 232a-232t. Each modulator 232 can process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signal from modulators 232a-232t can be transmitted via antennas 234a-234t, respectively.

[0047] At UE 120a, antennas 252a-252r can receive downlink signals from BS 110 and can provide received signals to demodulators (DEMODs) in transceivers 254a-254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the corresponding received signal to obtain input samples. Each demodulator can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 can obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide the detected symbols. Receiver processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to data sink 260, and provide decoding control information to controller / processor 280.

[0048] On the uplink, at UE 120a, the transmitting processor 264 can receive and process data from data source 262 (e.g., for the Physical Uplink Shared Channel (PUSCH)) and control information from controller / processor 280 (e.g., for the Physical Uplink Control Channel (PUCCH)). The transmitting processor 264 can also generate reference symbols for reference signals (e.g., for the Sounding Reference Signal (SRS)). If applicable, the symbols from the transmitting processor 264 can be pre-encoded by the TX MIMO processor 266, further processed by demodulators in transceivers 254a-254r (e.g., for SC-FDM, etc.), and transmitted to BS 110. At BS 110, the uplink signal from UE 120a can be received by antenna 234, processed by modulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiving processor 238 to obtain the decoded data and control information transmitted by UE 120a. The receiver processor 238 can provide decoded data to the data sink 239 and provide decoded control information to the controller / processor 240.

[0049] Memory 242 and 282 can store data and program code for BS 110 and UE 120a, respectively. Scheduler 244 can schedule UE to transmit data on the downlink or uplink.

[0050] The controller / processor 280 or other processors and modules at UE 120a can execute or direct the execution of processes according to the techniques described herein. As mentioned above, the controller / processor 280 of UE 120 has a measurement module 122, which can be configured to execute (or cause UE 120a to execute). Figure 4 Operation 400.

[0051] Figure 3A This is a diagram illustrating an example of NR frame format 300. The transmission timeline for each of the downlink and uplink can be divided into radio frame units. Each radio frame can have a predetermined duration (e.g., 10 ms) and can be divided into 10 subframes, each 1 ms, indexed from 0 to 9. Depending on the subcarrier spacing, each subframe can include a variable number of time slots. Depending on the subcarrier spacing, each time slot can include a variable number of symbol periods (e.g., 7 or 14 symbols). The symbol period within each time slot can be assigned an index. A micro-time slot, which can be referred to as a sub-time slot structure, refers to a transmission time interval with a duration less than one time slot (e.g., 2, 3, or 4 symbols).

[0052] Each symbol in a time slot can indicate the link direction of data transmission (e.g., DL, UL, or flexible), and the link direction can be dynamically switched for each subframe. The link direction can be based on the time slot format. Each time slot can include DL / UL data as well as DL / UL control information.

[0053] In NR, synchronization signal (SS) blocks are transmitted. SS blocks consist of PSS, SSS, and a two-symbol PBCH. SS blocks can be transmitted at fixed time slots, such as... Figure 3A The symbols 0-3 are shown. The UE can use PSS and SSS for cell search and acquisition. PSS provides half-frame timing, and SS provides CP length and frame timing. PSS and SSS provide cell identity. PBCH carries basic system information such as downlink system bandwidth, intra-radio frame timing information, SS burst set period, and system frame number. SS blocks can be organized into SS bursts to support beam scanning. Other system information, such as Residual Minimum System Information (RMSI), System Information Block (SIB), and Other System Information (OSI), can be transmitted on the Physical Downlink Shared Channel (PDSCH) in certain subframes. For example, for mmW, SS blocks can be transmitted up to 64 times in up to 64 different beam directions. Up to 64 transmissions of SS blocks are called SS burst sets. SS blocks in an SS burst set are transmitted in the same frequency region, while SS blocks in different SS burst sets can be transmitted at different frequencies.

[0054] like Figure 3B As shown, SS blocks can be organized into SS burst sets to support beam scanning. As illustrated, each SSB in the burst set can use a different beam for transmission, which helps the UE quickly acquire the transmit (Tx) and receive (Rx) beams (especially for mmW applications). The Physical Cell Identifier (PCI) can still be decoded from the SSB's PSS and SSS.

[0055] Example adjustments for battery measurements

[0056] This disclosure relates in various aspects to wireless communications, and more specifically, to techniques for adjusting the rate (or period) at which a user equipment (UE) performs measurements on certain frequencies, such as when performing a cell search to detect a cell and / or when performing cell measurements on a detected cell. The measurement period / rate for certain frequencies can be adjusted based on various factors (or parameters), such as whether a cell has been (recently) detected on a frequency within a time period or based on UE positioning.

[0057] By varying the measurement period / rate at different frequencies based on various parameters, the UE can reduce power consumption. For example, the technique proposed in this paper can be applied to frequency measurements in various frequency ranges (FRs) for new radio (NR), such as FR4 (e.g., 52.6 GHz – 114.25 GHz) and FR2 (24.25 GHz to 52.6 GHz). Compared to the frequency band in FR1 (sub-6 GHz band), the frequency range in this millimeter-wave (mmW) range has a shorter range but a higher usable bandwidth.

[0058] Some UE measurement processes can consume significant amounts of power. For example, traditional Media Access Control (MAC) layer (Layer 2 or L2) NR Radio Access Technology (RAT) measurements for mmW cells can involve numerous measurements across many frequencies, which can be time-consuming and resource-intensive. As a result, if the UE performs so many measurements, UE battery life can be significantly reduced.

[0059] In various aspects of this disclosure, for example, when the UE does not have much (if any) traffic and / or the UE is not near mmW coverage, the period / rate of measurements at different (e.g., mmW) frequencies can be controlled (e.g., reduced).

[0060] Therefore, certain aspects of this disclosure provide techniques for efficiently determining intra-frequency, inter-frequency, and / or inter-RAT measurements in a manner designed to reduce power consumption with relatively minimal impact on performance. For example, the techniques presented herein can help reduce transition time from Long Term Evolution (LTE) to Enhanced Universal Mobile Telecommunications System (UMTS) Radio Access Network (E-UTRAN) New Radio Dual Connectivity (ENDC) (e.g., LTE+mmW) without compromising power consumption.

[0061] As will be described herein, when conditions permit, and / or at least in part based on one or more parameters, the rate / cycle of NRmmW measurements can be adjusted (e.g., decreasing the rate and increasing the cycle, or increasing the rate and decreasing the cycle) to reduce power consumption. As used herein, “adjusting” the measurement rate / cycle can be understood as increasing or decreasing the measurement rate (or decreasing or increasing the measurement cycle). Measurement rate and cycle can be inversely proportional, such that decreasing the measurement cycle (decreasing the cycle between measurements) increases the measurement rate, while increasing the cycle (increasing the cycle between measurements) decreases the measurement rate.

[0062] The techniques presented herein can be applied to frequency measurements on the same or different RATs. For example, the techniques described herein can be applied to LTE to NR mmW conversion measurements, but also to ENDC to mmW conversion measurements, NR single-connection to mmW conversion measurements, NR dual-connection (DC) to mmW conversion measurements, or any suitable Wireless Wide Area Network (WWAN) to Wireless Local Area Network (WLAN) conversion measurements. Furthermore, the target measurement frequency can be associated with a frequency band other than mmW (e.g., having the same air interface type, LTE, NR, WCDMA, etc.). In some cases, even if the measurement is configured on the first RAT, there may be multiple RATs serving as the serving cell (e.g., LTE and NR in ENDC) or multiple frequency ranges in NR (e.g., FR1 and FR2 in NR DC).

[0063] Figure 4 An example operation 400 of a UE performing wireless communication according to various aspects of this disclosure is illustrated. For example, according to certain aspects of this disclosure, operation 400 can be performed by... Figure 1 or Figure 2 The UE 120a performs, or performs high-power-efficiency frequency measurements.

[0064] Operation 400 begins at 405, receiving a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies. At 410, the UE determines a period for measuring the at least one or more frequencies based on one or more parameters. At 415, the UE performs measurements of the at least one or more frequencies according to the determined period.

[0065] As mentioned above, in some respects, the techniques described herein can be applied to determine NR (e.g., mmW) measurements at variable rates / cycles to optimize power consumption.

[0066] Figure 4A and Figure 4B Example operations 420 and 430 are shown respectively, used to determine the measurement periods for cell search and cell measurement (e.g., according to...). Figure 4 (Box 410).

[0067] First refer to Figure 4A In operation 420, and 422, measurements are performed for the frequency. If a cell is detected within a time period (e.g., within some measurement cycles), as determined in 424, then in 428 the measurement cycles for that frequency are reduced (resulting in more frequent measurements at that frequency). On the other hand, if no cell is detected at that frequency within that time period, then in 428 the measurement cycles for that frequency are increased (resulting in less frequent measurements at that frequency).

[0068] First refer to Figure 4BOperations 430 and 432 perform measurements for a frequency. If the signal quality metric (determined based on the signal quality metric) of the strongest cell during the time period (e.g., less than a threshold), as determined at 434, the measurement period for that frequency is reduced at 438 (resulting in more frequent measurements at that frequency). Conversely, if no cell is detected at that frequency during the time period, the measurement period for that frequency is increased at 438 (resulting in less frequent measurements at that frequency).

[0069] For example, according to Figure 4A The illustrated operation 420 allows for determining (e.g., increasing) the measurement period when the UE does not detect an NR (e.g., mmW) cell within a time period (e.g., within N last attempts). Additionally or alternatively, according to... Figure 4B As shown in operation 430, if the measurement metric (e.g., based on the measurement metric) of the strongest (top) cell in a particular NR mmW frequency is less than the difference (e.g., KdB) of the measurement reporting threshold over a time period (e.g., in the last M consecutive attempts), the measurement rate / cycle can be reduced. The measurement metric can be, for example, Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Synchronization Signal (SS) Signal-to-Interference-plus-Noise Ratio (SINR).

[0070] In some cases, if one or both of the above conditions are met, the UE may reduce the measurement rate. Alternatively, if one or more conditions are not met, the UE may increase the measurement rate / cycle.

[0071] In some cases, the UE may adjust the measurement rate / cycle based on other factors (or parameters), such as the UE's state of charge, battery state (e.g., >50%), UE's display mode (e.g., display on), and / or UE's performance mode (e.g., as indicated / configured by the UE's user). For example, if the UE is plugged into a charger or the battery is high, it may not be necessary to reduce the measurement rate / cycle to save power. Similarly, if the display is on or the user has indicated a high-performance mode, these can be considered factors where the power consumption associated with more frequent measurements may be tolerable.

[0072] In some cases, the UE can adjust the measurement rate / cycle based on traffic activity and / or inertial data from at least one sensor on the UE. For example, if there is limited traffic activity or the sensors indicate that the UE moves little or no, more frequent measurements may not be helpful, and the additional power consumption may be considered unreasonable. Therefore, in this example, the measurement rate can be reduced. In some cases, the UE can adjust the measurement rate / cycle based on the UE's own mobility. In this case, mobility can be based on the rate of change of the measurement signal quality of the UE's serving cell and / or input from one or more inertial sensors (e.g., accelerometers) on the UE.

[0073] In some respects, the UE can adjust the measurement rate / cycle based on historical data (e.g., within a specific cell). For example, the UE can determine information about mmW cells based on other information such as the UE's location. The UE can determine its location (e.g., a specific physical location) based, for example, on Global Positioning System (GPS) information, RSRP triangulation, RSRQ, SINR and / or Positioning Reference Signal (PRS) or other methods (such as location determination based on Basic Service Set ID (BSSID)). The UE can adjust the measurement rate / cycle based on the determined location and prior information about that location. For example, the prior information might indicate that there are no NR (e.g., mmW) cells in the relevant area. Therefore, performing cell search and / or measurements on NR frequencies may be unreasonable.

[0074] In some respects, the UE can adjust the measurement rate / cycle by scheduling measurements at certain frequencies to be performed simultaneously, based on its baseband and / or radio frequency (RF) capabilities. For example, the UE can determine the measurement cycle at least in part based on its RF capabilities (e.g., how many mmW frequencies can be measured within the RF bandwidth (BW) under a given power constraint (e.g., a larger RF BW results in higher power)). In some cases, the UE may have RF capabilities that allow it to measure multiple mmW frequencies simultaneously. In this case, the periodicity of such frequencies can be determined / adjusted to achieve simultaneous measurements with relatively minimal impact on power consumption.

[0075] In some respects, the UE can determine the measurement rate / period based at least in part on whether the search being performed is for an asynchronous cell or a synchronous cell. For example, due to known timing, more frequencies can be measured simultaneously in a synchronous cell (e.g., relative to an asynchronous cell), resulting in fewer measurement candidates. In this case, the UE can perform multiple measurements on one or more frequencies simultaneously. Alternatively, the UE may be able to perform one asynchronous cell search on one frequency, but multiple synchronous cell searches on multiple different frequencies. In this case, the UE can determine the period of such frequencies to allow for more frequent synchronous cell searches with relatively little impact on power consumption. For example, as defined in 3GPP TS 38.133, synchronization (e.g., for synchronous handover / transition) can be understood as meaning the satisfaction of conditions associated with the maximum receive / transmit timing difference between the source and target cells, where failure to satisfy such conditions would be asynchronous (e.g., for asynchronous handover / transition). Furthermore, it should be understood that these conditions, as defined in Table 6.1.3.2-1 of 3GPP TS 38.133, can vary for intra-frequency, intra-band / inter-frequency, and inter-band / inter-frequency conditions.

[0076] In some respects, the adjustment of the measurement rate / period may include the configuration of the measurement gap (e.g., a period of time designed to allow the UE to perform measurements). The techniques described herein can be applied to gap-based measurements or gapless measurements (without dedicated measurement gaps). Furthermore, the techniques disclosed herein can also be applied to discontinuous reception (DRX) and connected mode DRX (CDRX) periods.

[0077] Depending on certain aspects, the UE can maintain two distinct frequency groups: an active group and a sleep group. The active group may include frequencies measured at a higher rate because one of the aforementioned parameter-related conditions is met, while the sleep group may include frequencies measured at a lower rate because one of the aforementioned parameter-related conditions is not met. Figure 5A As shown, for the purpose of cell search (measurements performed for cell detection), such an (active and dormant) group can be maintained. Alternatively, for the purpose of cell measurement (measurements performed after cell detection), an active and dormant frequency group can be maintained, such as... Figure 5B As shown.

[0078] For cell searches, frequencies in the active group can be measured at a faster rate (or a slower period), while frequencies in the dormant group can be measured at a slower rate. For example, frequencies in the active group can be measured at a rate / period that is K times faster than those in the dormant group (where K > 1, e.g., 4). This can be called measurement scaling, because the measurement period can be increased or decreased, much like the length of a telescope during scaling.

[0079] In some cases, the UE can initialize some or all frequencies in an active group. Furthermore, as... Figure 5A As shown, a UE can move a frequency from the active group to the sleep group, or vice versa (effectively adjusting the measurement period). For example, if no mmW cell is detected in the last N consecutive attempts (e.g., where N is a positive integer, such as 3), a frequency in the active group can be moved to the sleep group. Conversely, if at least one mmW cell is detected on that particular frequency within the last N opportunities, a frequency in the sleep group can be moved to the active group. In some cases, different conditions / parameters can be applied to move a frequency from the active group to the sleep group, rather than to move a frequency from the sleep group to the active group.

[0080] In some cases, frequencies can be measured at different periods for any given group (active group and / or dormant group). For example, different periods can be based on some additional environmental or parameter (e.g., the probability of detecting a cell at a given frequency).

[0081] like Figure 5B As shown, for cell measurement purposes, the UE can also maintain active measurement groups and dormant measurement groups. For example, these groups may include frequencies for which at least one cell has been detected. Similar to the description of cell search above, the active measurement group frequencies can typically be determined at a faster rate / cycle, while the dormant measurement group frequencies can be determined at a slower rate / cycle (e.g., K1 times the search cycle of the active measurement group frequencies, where K1>1).

[0082] In some respects, the UE can initialize some or all frequencies for which at least one cell has been detected in the active measurement group. Similar to the cell search description above, if the cell measurements do not meet the following measurement threshold criteria in the last N1 attempts (e.g., where N1 is a positive integer), frequencies in the active measurement group can be moved to the dormant measurement group:

[0083] (1) The CDRX period is greater than or equal to 160ms; and / or

[0084] (2) The N1 consecutive measurements of the highest cell between FR2 frequencies or between RAT frequencies are less than the threshold decibel value.

[0085] In some respects, the threshold decibel value can be a threshold for the trigger-to-trigger time (TTT) and can include hysteresis configured by the network. In some examples, the UE can set the measurement rate / period of the FR2 measurement frequency to K1 times the default measurement rate, where the default measurement rate / period is the baseline measurement rate / period of the active measurement group. In some respects, a frequency in the dormant measurement group can be moved to the active measurement group if the measurement of the top (strongest) cell is at least greater than or equal to the threshold decibel value (e.g., 4 dB) in the last scheduled measurement. It should be noted that for frequencies within the active measurement group, frequencies can be measured at different periods based on additional environmental factors (e.g., the probability of detecting a cell at a given frequency).

[0086] The techniques presented in this paper can help optimize UE power consumption by adjusting the rate (or period) at which the UE performs measurements at certain frequencies, such as when performing cell search to detect cells and / or when performing cell measurements on cells that have already been detected.

[0087] Figure 6 A communication device 600 is shown, which may include various components (e.g., corresponding to component-plus-function components) configured to perform operations of the techniques disclosed herein, such as Figure 4 The operation is illustrated. Communication device 600 includes a processing system 602 coupled to a transceiver 608 (e.g., a transmitter and / or receiver). Transceiver 608 is configured to transmit and receive signals for communication device 600 via antenna 610, such as the various signals described herein. Processing system 602 can be configured to perform processing functions of communication device 600, including processing signals received and / or transmitted by communication device 600.

[0088] Processing system 602 includes processor 604 coupled to computer-readable medium / memory 612 via bus 606. In some aspects, computer-readable medium / memory 612 is configured to store instructions (e.g., computer-executable code) that, when executed by processor 604, cause processor 604 to perform... Figure 4The operation is illustrated. In some aspects, the computer-readable medium / memory 612 stores code 614 for receiving a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; code 616 for determining a period for measuring the at least one or more frequencies based on one or more parameters; and code 618 for performing a measurement of the at least one or more frequencies according to the determined period. In some aspects, the processor 604 has circuitry configured to implement the code stored in the computer-readable medium / memory 612. The processor 604 includes circuitry 620 for receiving a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; circuitry 622 for determining a period for measuring the at least one or more frequencies based on one or more parameters; and circuitry 624 for performing a measurement of the at least one or more frequencies according to the determined period.

[0089] Example

[0090] The following numbering describes an implementation example:

[0091] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: receiving a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; determining a period for measuring the at least one or more frequencies based on one or more parameters; and performing a measurement of the at least one or more frequencies according to the period.

[0092] Aspect 2: According to the method of aspect 1, wherein: the one or more parameters include whether a cell is detected on one of the at least one or more frequencies during the time period; and wherein determining the period includes increasing the period used to measure the at least one or more frequencies if no cell is detected on the at least one or more frequencies during the time period.

[0093] Aspect 3: According to the method of aspect 2, determining the period further includes: if a cell is detected on the at least one or more frequencies during the time period, then reducing the period used to perform measurements on the at least one or more frequencies.

[0094] Aspect 4: The method according to any one of Aspects 1-3, wherein: the one or more parameters include whether a measurement of the signal quality metric of the strongest cell determined based on the signal quality metric in the at least one or more frequencies within a time period is less than a threshold, and wherein determining the period includes increasing the period for performing the measurement on the at least one or more frequencies if the measurement of the strongest cell within the time period is less than the threshold.

[0095] Aspect 5: According to the method of aspect 4, determining the period further includes reducing the period for performing measurements on the at least one or more frequencies if the measurement of the strongest cell is at or above the threshold during the time period.

[0096] Aspect 6: The method according to any one of Aspects 1-5, wherein the at least one parameter includes at least one of the following: the charging state of the UE, the battery level of the UE, the display state of the UE, or the performance mode indicated by the user.

[0097] Aspect 7: The method according to any one of Aspects 1-6, wherein the at least one parameter includes at least one of the following: the service activity of the UE, and input from one or more sensors of the UE indicating whether the UE is moving or not.

[0098] Aspect 8: The method according to any one of Aspects 1-7, wherein the at least one parameter includes a measurement of the mobility of the UE based on at least one of the following: the rate of change of the measured signal quality of the serving cell; or input from one or more inertial sensors of the UE.

[0099] Aspect 9: The method according to any one of Aspects 1-8, wherein the at least one parameter includes at least one of historical measurement data in a cell associated with the one or more frequencies or the physical location of the UE.

[0100] Aspect 10: The method according to aspect 9 further includes determining the physical location of the UE based on triangulation based on reference signal measurements, location determination based on Basic Service Set ID (BSSID), or Global Positioning System (GPS) input and prior information about cell coverage associated with the physical location.

[0101] Aspect 11: The method according to any one of Aspects 1-10, wherein the at least one parameter includes at least one of the following: the baseband capability or radio frequency (RF) capability of the UE; or the measurement is performed for asynchronous cell search or synchronous cell search.

[0102] Aspect 12: According to the method of aspect 11, determining the period includes simultaneously performing scheduling measurements on the one or more frequency frequencies.

[0103] Aspect 13: The method according to any one of Aspects 1-13, wherein: the measurement configuration is received via a first radio access technology (RAT); and the measurement configuration indicates the one or more frequencies associated with a second RAT.

[0104] Aspect 14: The method according to aspect 13, wherein the measurement configuration includes a measurement gap.

[0105] Aspect 15: The method according to aspect 13, wherein: the first RAT includes a Long Term Evolution (LTE) RAT, and the second RAT includes a New Radio (NR) RAT.

[0106] Aspect 16: The method according to aspect 13, wherein: the first RAT includes a wireless local area network (WLAN) RAT; and the second RAT includes a wireless wide area network (WWAN) RAT.

[0107] Aspect 17: The method according to aspect 13, wherein performing the measurement includes performing the measurement at a millimeter wave (mmW) frequency.

[0108] Aspect 18: The method according to any one of aspects 1-17 further includes:

[0109] Identify a first set of frequencies having a first measurement period; and identify a second set of frequencies having a second measurement period; wherein determining the period includes shifting a frequency from the first set of frequencies to the second set of frequencies or from the second set of frequencies to the first set of frequencies.

[0110] Aspect 19: The method according to aspect 18, wherein the first measurement period is shorter than the second measurement period.

[0111] Aspect 20: The method according to aspect 18, wherein at least some frequencies are determined within at least one of the first set of frequencies or the second set of frequencies for measurement at different periods.

[0112] Aspect 21: The method according to aspect 18, wherein: the first set of frequencies includes an active frequency set for cell search; and the second set of frequencies includes a dormant frequency set for cell search.

[0113] Aspect 22: According to the method of aspect 21, wherein the frequency is moved from the dormant frequency group to the active frequency group based on cell detection in the frequency.

[0114] Aspect 23: The method according to aspect 18, wherein: the first set of frequencies includes an active frequency group for cell measurement; and the second set of frequencies includes a dormant frequency group for cell measurement.

[0115] Aspect 24: According to the method of aspect 23, wherein the frequency is moved from the dormant frequency group to the active frequency group based on cell measurements in the frequency satisfying one or more threshold criteria.

[0116] Aspect 25: An apparatus for wireless communication, comprising components for performing the method described in any one or more of aspects 1-24.

[0117] Aspect 26: An apparatus for wireless communication, comprising a memory and a processor coupled to the memory, the memory and the processor being configured to perform any one or more of aspects 1-24.

[0118] Aspect 27: A computer-readable medium having instructions stored thereon, which, when executed by a processor, perform the method described in any one or more of aspects 1-24.

[0119] The techniques described in this article can be used in various wireless communication technologies, such as NR (e.g., 5G NR), 3GPP Long Term Evolution (LTE), LTE-A Advanced (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. CDMA networks can implement wireless technologies such as Universal Terrestrial Radio Access (UTRA) and cdma2000. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers the IS-2000, IS-95, and IS-856 standards. TDMA networks can implement radio technologies such as the Global System for Mobile Communications (GSM). OFDMA networks can implement radio technologies such as NR (e.g., 5G RA), evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are UMTS versions using E UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). CDMA2000 and UMB are described in documents from an organization called the 3rd Generation Partnership Project 2 (3GPP2). NR is an emerging wireless communication technology under development.

[0120] The techniques described herein can be used in the aforementioned wireless network and radio technologies, as well as other wireless network and radio technologies. For clarity, although terms commonly associated with 3G, 4G, or 5G wireless technologies may be used to describe aspects herein, aspects of this disclosure can be applied to other generation-based communication systems.

[0121] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) or the NB subsystem serving that coverage area, depending on the context in which the term is used. In NR systems, the term "cell" is used interchangeably with BS, Next Generation Node B (gNB or gNodeB), Access Point (AP), Distributed Unit (DU), Carrier, or Transmit / Receive Point (TRP). A BS can provide communication coverage for macrocells, picocells, femtocells, or other types of cells. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access for UEs with service subscriptions. A picocell can cover a relatively small geographic area and can allow unrestricted access for UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access for UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG), UEs of users in a home, etc.). A BS for a macrocell can be called a macro BS. A BS for a picocell can be called a pico BS. A BS for a femtocell can be called a femto BS or a home BS.

[0122] A UE can also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smartphone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device or medical equipment, biosensor / device, wearable device (such as smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite radio, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media. Some UEs can be considered machine-type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with the BS, another device (e.g., a remote device), or some other entity. For example, a wireless node can provide connectivity to a network (e.g., a wide area network such as the Internet or cellular networks) via wired or wireless communication links. Some UEs may be considered Internet of Things (IoT) devices, which can be narrowband IoT (NB-IoT) devices.

[0123] Some wireless networks (e.g., LTE) utilize Orthogonal Frequency Division Multiplexing (OFDM) on the downlink and Single-Carrier Frequency Division Multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, often referred to as tones or bins. Each subcarrier can be modulated with data. Typically, OFDM is used to transmit modulation symbols in the frequency domain, while SC-FDM is used to transmit modulation symbols in the time domain. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the subcarrier spacing could be 15 kHz, and the minimum resource allocation (called a "resource block" (RB)) could be 12 subcarriers (or 180 kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, the nominal Fast Fourier Transform (FFT) size could be equal to 128, 256, 512, 1024, or 2048, respectively. System bandwidth can also be divided into subbands. For example, a subband can cover 1.08MHz (e.g., 6 RBs), and for system bandwidths of 1.25, 2.5, 5, 10, or 20MHz, there can be 1, 2, 4, 8, or 16 subbands respectively. In LTE, the basic transmission time interval (TTI) or packet duration is a 1ms subframe.

[0124] NR can utilize OFDM with CP on both uplink and downlink, and includes support for half-duplex operation using TDD. In NR, subframes are still 1ms, but the basic TTI is called a slot. Depending on the subcarrier spacing, a subframe contains a variable number of slots (e.g., 1, 2, 4, 8, 16, ...). NR RBs are 12 consecutive frequency subcarriers. NR can support a basic subcarrier spacing of 15kHz, and other subcarrier spacings can be defined relative to the basic subcarrier spacing, such as 30kHz, 60kHz, 120kHz, 240kHz, etc. Symbol and slot lengths are proportional to the subcarrier spacing. The CP length also depends on the subcarrier spacing. Beamforming can be supported, and beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. In some examples, MIMO configurations in DL can support up to 8 transmit antennas, with up to 8 streams in multilayer DL transmission and up to 2 streams per UE. In some examples, multilayer transmission with up to 2 streams per UE can be supported. Up to eight service cells can support the aggregation of multiple cells.

[0125] In some examples, access to the air interface can be scheduled. A scheduling entity (e.g., a BS) allocates resources for communication between some or all devices and equipment within its service area or cell. The scheduling entity can be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize the resources allocated by the scheduling entity. A base station is not the only entity that can act as a scheduling entity. In some examples, a UE can act as a scheduling entity and can schedule resources for one or more subordinate entities (e.g., one or more other UEs), and other UEs can use the resources scheduled by the UE for wireless communication. In some examples, a UE can act as a scheduling entity in a peer-to-peer (P2P) network or a mesh network. In the mesh network example, in addition to communicating with a scheduling entity, UEs can also communicate directly with each other.

[0126] As used herein, the term "determine" encompasses one or more of a variety of actions. For example, "determine" can include deduction, calculation, processing, derivation, investigation, searching (e.g., searching in a table, database, or other data structure), hypothesis, etc. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data in memory), etc. Additionally, "determine" can include parsing, selecting, choosing, establishing, etc.

[0127] As used herein, “or” is intended to be interpreted in an inclusive sense unless otherwise expressly indicated. For example, “a or b” could include only a, only b, or a combination of a and b. As used herein, expressions referring to “at least one” or “one or more” in a list of items mean any combination of those items, including a single member. For example, “at least one of a, b, or c” is intended to cover the possibilities of only a, only b, only c, a combination of a and b, a combination of a and c, a combination of b and c, and a combination of a, b, and c.

[0128] The various operations described above can be performed by any suitable component capable of performing the corresponding function. This component may include (one or more) various hardware and / or software components and / or modules, including but not limited to circuits, application-specific integrated circuits (ASICs), or processors. Typically, in cases where operations are illustrated in a diagram, these operations may have corresponding component-plus-function components. For example, Figure 4 The various operations shown can be performed by Figure 2 The various processors shown are used to execute this.

[0129] The various illustrative logic blocks, modules, and circuits described in connection with this disclosure may be implemented or executed using a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0130] If implemented in hardware, an example hardware configuration could include a processing system in a wireless node. The processing system can be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus can include any number of interconnect buses and bridges. The bus can link various circuits together, including processors, machine-readable media, and bus interfaces. The bus interface can be used to connect network adapters, etc., to the processing system via the bus. The network adapter can be used to implement signal processing functions at the PHY layer. In UE 120a (see...) Figure 1 In this case, the user interface (e.g., keyboard, display, mouse, joystick, etc.) can also be connected to the bus. The bus can also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described further. The processor can be implemented using one or more general-purpose and / or special-purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits capable of executing software. Those skilled in the art will recognize how best to implement the functions of the described processing system based on the specific application and the overall design constraints imposed on the system as a whole.

[0131] If implemented in software, these functions can be stored or transferred as one or more instructions or code onto a computer-readable medium. Software should be broadly defined to mean instructions, data, or any combination thereof, whether it refers to software, firmware, middleware, microcode, hardware description languages, or others. Computer-readable media includes computer storage media and communication media, with communication media including any medium that facilitates the transfer of computer programs from one place to another. The processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage medium. The computer-readable storage medium may be coupled to the processor, allowing the processor to read information from and write information to the storage medium. Alternatively, the storage medium may be integrated into the processor. For example, machine-readable media may include transmission lines, carrier waves modulated by data, and / or computer-readable storage media storing instructions separate from the wireless node, all accessible to the processor via a bus interface. Alternatively or additionally, the machine-readable medium or any portion thereof may be integrated into the processor, such as in the case of caches and / or general-purpose register files. Examples of machine-readable storage media may include random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, disks, optical disks, hard disks, or any other suitable storage media or any combination thereof. Machine-readable media may be contained in a computer program product.

[0132] Software modules can include single or multiple instructions and can be distributed across several different code segments, different programs, and multiple storage media. Computer-readable media can include multiple software modules. Software modules include instructions that, when executed by a device such as a processor, cause the processing system to perform various functions. Software modules can include sending modules and receiving modules. Each software module can reside in a single storage device or be distributed across multiple storage devices. For example, when a triggering event occurs, a software module can be loaded from a hard disk drive into RAM. During the execution of a software module, the processor can load some instructions into a cache to improve access speed. Then, one or more cache lines can be loaded into a general-purpose register file for execution by the processor. When referring to the functionality of a software module below, it should be understood that this functionality is implemented by the processor when instructions from that software module are executed.

[0133] Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared (IR), radio, and microwave), then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of medium. The disks and optical discs used herein include optical discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs reproduce data optically using lasers. Therefore, in some aspects, a computer-readable medium can include non-transitory computer-readable media (e.g., tangible media). Furthermore, in other aspects, a computer-readable medium can include transient computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0134] Therefore, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having instructions stored thereon (and / or encoded thereon) that can be executed by one or more processors to perform the operations described herein, for example, for performing the operations described herein and... Figure 4 The instructions for the operation are shown in the figure.

[0135] Various modifications to the implementations described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein can be applied to other implementations without departing from the spirit or scope of this disclosure. Therefore, the claims are not intended to limit them to the implementations shown herein, but are consistent with the widest scope of this disclosure, its principles, and novel features.

[0136] Furthermore, the various features described in this specification in the context of individual implementations can also be implemented in combination within a single implementation. Conversely, the various features described in the context of a single implementation can also be implemented individually in multiple implementations or in any suitable sub-combination. Therefore, although a feature may be described above as functioning in a particular combination, and even initially claimed in this way, in some cases, one or more features from the claimed combination may be removed from that combination, and the claimed combination may be for sub-combinations or variations thereof.

[0137] Similarly, although operations are described in a specific order in the accompanying drawings, this should not be construed as requiring these operations to be performed in the specific order shown or sequentially, or requiring all shown operations to be performed to obtain the desired result. Furthermore, the drawings may schematically depict one or more example processes in the form of a flowchart or table. However, other operations not shown may be combined with the schematically shown example processes. For example, one or more additional operations may be performed before, after, simultaneously with, or between any shown operations. In some cases, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the above implementations should not be construed as requiring such separation in all implementations, and it should be understood that the described program components and systems can generally be integrated into a single software product or encapsulated into multiple software products.

Claims

1. A wireless communication method performed by a user equipment (UE), comprising: Receive a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; A period for measuring the at least one or more frequencies is determined based on one or more parameters, wherein a first measurement period is determined for a first set of frequencies and a second measurement period is determined for a second set of frequencies, the first measurement period being different from the second measurement period; and The measurement of the at least one or more frequencies is performed according to the said period.

2. The method according to claim 1, wherein The one or more parameters include whether a cell was detected on one of the at least one or more frequencies during the time period; and Determining the period includes increasing the period used to measure the at least one or more frequencies if no cell is detected during the time period.

3. The method according to claim 2, wherein determining the period further comprises: If a cell is detected on the at least one or more frequencies during the time period, the period used to perform measurements on the at least one or more frequencies is reduced.

4. The method according to claim 1, wherein The one or more parameters include whether the measurement of the signal quality metric of the strongest cell, determined based on the signal quality metric in the at least one or more frequencies within the time period, is less than a threshold, and Determining the period includes increasing the period for performing measurements on the at least one or more frequencies if the measurement of the strongest cell is less than the threshold during the time period.

5. The method of claim 4, wherein determining the period further comprises reducing the period for performing measurements on the at least one or more frequencies if the measurement of the strongest cell is at or above the threshold during the time period.

6. The method of claim 1, wherein the at least one parameter comprises at least one of the following: The charging status of the UE, The battery level of the UE, The display status of the UE; or User-defined performance mode.

7. The method of claim 1, wherein the at least one parameter comprises at least one of the following: The UE's service activities; or Inputs from one or more sensors of the UE indicating whether the UE is moving or not.

8. The method of claim 1, wherein the at least one parameter comprises a measurement of the UE's mobility based on at least one of the following: The rate of change of the measured signal quality of the serving cell; or Input from one or more inertial sensors of the UE.

9. The method of claim 1, wherein the at least one parameter includes at least one of historical measurement data in a cell associated with the one or more frequencies or the physical location of the UE.

10. The method of claim 9, further comprising determining the physical location of the UE based on triangulation of reference signal measurements, location determination based on a basic service set ID (BSSID), or global positioning system (GPS) input and prior information about cell coverage associated with the physical location.

11. The method of claim 1, wherein the at least one parameter comprises at least one of the following: The UE's baseband capability or radio frequency (RF) capability; or The measurement is performed for asynchronous cell search or synchronous cell search.

12. The method of claim 11, wherein determining the period includes simultaneously performing frequency scheduling measurements on the one or more frequencies.

13. The method of claim 1, wherein The measurement configuration is received via a first wireless access technology (RAT); and The measurement configuration indicates the one or more frequencies associated with the second RAT.

14. The method of claim 13, wherein the measurement configuration includes a measurement gap.

15. The method according to claim 13, wherein: The first RAT includes the Long Term Evolution (LTE) RAT; and The second RAT includes the New Radio (NR) RAT.

16. The method of claim 13, wherein: The first RAT includes a wireless local area network (WLAN) RAT; and The second RAT includes the Wireless Wide Area Network (WWAN) RAT.

17. The method of claim 13, wherein performing the measurement includes performing the measurement at a millimeter wave (mmW) frequency.

18. The method according to claim 1, further comprising: Identify the first group of frequencies having the first measurement period; as well as Identify the second set of frequencies having the second measurement period, wherein determining the period includes shifting the frequency from the first set of frequencies to the second set of frequencies or from the second set of frequencies to the first set of frequencies.

19. The method of claim 18, wherein the first measurement period is shorter than the second measurement period.

20. The method of claim 18, wherein at least some frequencies are determined within at least one of the first set of frequencies or the second set of frequencies for measurement at different periods.

21. The method according to claim 18, wherein: The first group of frequencies includes an active frequency group used for cell search; and The second group of frequencies includes a group of dormant frequencies used for cell search.

22. The method of claim 21, wherein the frequency is moved from the dormant frequency group to the active frequency group based on cell detection in the frequency group.

23. The method of claim 18, wherein: The first set of frequencies includes an active frequency group used for cell measurements; and The second group of frequencies includes a group of dormant frequencies used for cell measurements.

24. The method of claim 23, wherein the frequency is moved from the dormant frequency group to the active frequency group based on cell measurements in the frequency satisfying one or more threshold criteria.

25. An apparatus for wireless communication by a user equipment (UE), comprising: A memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to: Receive a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; A period for measuring the at least one or more frequencies is determined based on one or more parameters, wherein a first measurement period is determined for a first set of frequencies and a second measurement period is determined for a second set of frequencies, the first measurement period being different from the second measurement period; and The measurement of the at least one or more frequencies is performed according to the said period.

26. The apparatus according to claim 25, wherein: The one or more parameters include whether a cell was detected on one of the at least one or more frequencies during the time period; and The memory and the at least one processor are configured to determine the period by increasing the period used to measure the at least one or more frequencies if no cell is detected during the time period.

27. The apparatus according to claim 25, wherein: The one or more parameters include whether the measurement of the signal quality metric of the strongest cell, determined based on the signal quality metric in the at least one or more frequencies within the time period, is less than a threshold, and The memory and the at least one processor are configured to determine the period by increasing the period used to perform measurements on the at least one or more frequencies if the measurement of the strongest cell is less than the threshold during the time period.

28. The apparatus according to claim 25, wherein: The measurement configuration is received via a first wireless access technology (RAT); and The measurement configuration indicates the one or more frequencies associated with the second RAT.

29. An apparatus for wireless communication by a user equipment (UE), comprising: A component for receiving a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; A component for determining a period for measuring the at least one or more frequencies based on one or more parameters, wherein a first measurement period is determined for a first set of frequencies and a second measurement period is determined for a second set of frequencies, the first measurement period being different from the second measurement period; as well as A component for performing measurements of the at least one or more frequencies according to the said period.

30. A computer-readable medium having instructions stored thereon for: Receive a measurement configuration, wherein the measurement configuration indicates at least one or more frequencies; The period for measuring the at least one or more frequencies is determined based on one or more parameters, wherein, A first measurement period is determined for a first set of frequencies, and a second measurement period is determined for a second set of frequencies, wherein the first measurement period is different from the second measurement period; and The measurement of the at least one or more frequencies is performed according to the said period.

31. A computer program product comprising computer-readable instructions, which, when executed by a processor, cause the processor to perform the method according to any one of claims 1-24.

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