Enhanced loose measurement

Abstract

Aspects of the present disclosure relate to a UE, a base station, a processor, a method, and a computer readable medium for enhanced loose measurement. In one aspect, a UE receives, from a base station, a first configuration for loose measurement evaluation and a second configuration for neighbor cell measurement, where the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for loose measurement evaluation. The UE performs a loose measurement evaluation based on the first configuration and the second configuration. In this manner, the UE may avoid unnecessary evaluation and may ensure accurate evaluation of loose measurements taking into account network characteristics.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to wireless communications, and more particularly to a user equipment (UE), a base station, a processor for wireless communications, a method, and a computer readable medium for enhanced relaxed measurements. BACKGROUND

[0002] A wireless communication system can include one or more network communication devices, such as base stations, which can also be referred to as eNodeBs (eNBs), next generation NodeBs (gNBs), or other suitable terminology. Each network communication device, such as a base station, can support wireless communication for one or more user communication devices, which can also be referred to as user equipment (UE) or other suitable terminology. The wireless communication system can support wireless communication with one or more user communication devices by utilizing resources of the wireless communication system, for example, time resources (e.g., symbols, time slots, subframes, frames, etc.) or frequency resources (e.g., subcarriers, carriers). In addition, the wireless communication system can support wireless communication across various radio access technologies, including third generation (3G) radio access technologies, fourth generation (4G) radio access technologies, fifth generation (5G) radio access technologies, and other suitable radio access technologies beyond 5G (e.g., sixth generation (6G)).

[0003] Reduced Capbility (RedCap) (also known as New Radio-Light (NR-Light)) is a less complex UE type introduced in 3GPP Rel-17, which aims to support longer battery life, more cost-efficient devices, and support more use cases, including Internet of Things (IoT) and industry applications. One of the features that RedCap UEs specifically support is relaxed radio resource management (RRM) measurements. For normal UEs in LTE or NR, RRM measurements are performed on downlink signals broadcasted by the network to ensure that the UE is connected to the eNB / gNB with the strongest signal strength. To extend battery life, the requirements for RRM measurements can be relaxed to allow RedCap UEs to perform the measurements less frequently, for example, when the UE is stationary and optionally not at the cell edge. SUMMARY

[0004] The present disclosure relates to methods, apparatuses, and systems for enhanced relaxed measurements. Embodiments of the present disclosure can avoid unnecessary evaluations and can ensure accurate evaluation of relaxed measurements while taking into account network characteristics.

[0005] In a first aspect, a UE is provided. The UE includes a processor; and a transceiver coupled to the processor, wherein the processor is configured to: receive, from a base station via the transceiver, a first configuration for relaxed measurement evaluation and a second configuration for neighbor cell measurement, wherein the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for relaxed measurement evaluation; and perform relaxed measurement evaluation based on the first configuration and the second configuration.

[0006] In a second aspect, a base station is provided. The base station includes a processor; and a transceiver coupled to the processor, wherein the processor is configured to: determine a first configuration for relaxed measurement evaluation and a second configuration for neighbor cell measurement, wherein the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for relaxed measurement evaluation; and transmit, to a user equipment (UE) via the transceiver, the first configuration and the second configuration.

[0007] In a third aspect, a processor for wireless communication is provided. The processor includes at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, at a user equipment, from a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbor cell measurement, wherein the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for relaxed measurement evaluation; and perform relaxed measurement evaluation based on the first configuration and the second configuration

[0008] In a fourth aspect, a processor for wireless communication is provided. The processor includes at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: determine, at a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbor cell measurement, wherein the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for relaxed measurement evaluation; and transmit, to a user equipment (UE), the first configuration and the second configuration.

[0009] In a fifth aspect, a method performed by a UE is provided. The method includes: receiving, from a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbor cell measurement, wherein the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for relaxed measurement evaluation; and performing relaxed measurement evaluation based on the first configuration and the second configuration.

[0010] In a sixth aspect, a method performed by a base station is provided. The method includes: determining a first configuration for relaxed measurement evaluation and a second configuration for neighbor cell measurement, wherein the second configuration includes an indication associated with a neighbor cell measurement trigger or a supplemental configuration for relaxed measurement evaluation; and transmitting, to a user equipment (UE), the first configuration and the second configuration.

[0011] In some implementations of the methods and UE described herein, the first configuration can include at least one of: a reference signal received power (RSRP) based stationary or low mobility criterion for relaxed measurement; or a RSRP / reference signal received quality (RSRQ) based non-cell edge criterion for relaxed measurement.

[0012] In some implementations of the methods and UE described herein, the indication associated with the neighbor cell measurement trigger can include one of: an indication of a time based neighbor cell measurement trigger or an indication of a distance based neighbor cell measurement trigger.

[0013] In some implementations of the methods and UE described herein, the UE can determine whether a satisfaction of a time based criterion requires a neighbor cell measurement based on the indication of the time based neighbor cell measurement trigger; and one of: ignore the relaxed measurement evaluation based on a determination that the satisfaction of the time based criterion requires the neighbor cell measurement; or continue the relaxed measurement evaluation based on a determination that the satisfaction of the time based criterion does not require the neighbor cell measurement.

[0014] In some implementations of the methods and UE described herein, the indication of the time based neighbor cell measurement trigger can include one of a stop serving time or a feeder link switch time of a serving non-terrestrial network (NTN) cell.

[0015] In some implementations of the methods and UE described herein, the time based criterion can be satisfied when an interval between a current time and the stop serving time or the feeder link switch time is less than a time threshold.

[0016] In some implementations of the methods and UE described herein, the UE can determine whether a satisfaction of a distance based criterion requires a neighbor cell measurement based on the indication of the distance based neighbor cell measurement trigger; and one of: ignore the relaxed measurement evaluation based on a determination that the satisfaction of the distance based criterion requires the neighbor cell measurement; continue the relaxed measurement evaluation based on a determination that the satisfaction of the distance based criterion requires the neighbor cell measurement and the serving NTN cell of the UE is an earth moving cell; or continue the relaxed measurement evaluation based on a determination that the satisfaction of the distance based criterion does not require the neighbor cell measurement.

[0017] In some implementations of the methods and UE described herein, the indication of the distance based neighbor cell measurement trigger can include a reference location or a distance threshold.

[0018] In some implementations of the methods and UE described herein, the distance based criterion can be satisfied when a distance from the UE to the reference location is greater than the distance threshold.

[0019] In some implementations of the methods and UE described herein, the UE can continue the relaxed measurement evaluation based on a determination that a RSRP / RSRQ based criterion is satisfied requiring neighbor cell measurements, and the offset is applied to the first configuration.

[0020] In some implementations of the methods and UE described herein, the supplemental configuration for relaxed measurement evaluation can include at least one criterion for stationary state evaluation, and the UE can perform the relaxed measurement evaluation using the at least one criterion for stationary state evaluation.

[0021] In some implementations of the methods and UE described herein, the at least one criterion for stationary state evaluation can include a distance change based criterion indicating one of a first threshold value for a distance change from the UE to a previous UE reference location, a second threshold value for a distance change from the UE to a serving cell reference location, a third threshold value for a distance change from the UE to the serving cell reference location less an expected distance change due to movement of an access node or base station, or a fourth threshold value for a rate of distance change from the UE to the serving cell reference location.

[0022] In some implementations of the methods and UE described herein, performing the relaxed measurement evaluation can include determining that the distance change based criterion is satisfied based on a determination that one of the distance change from the UE to the previous UE reference location is less than or not greater than the first threshold value at one time or over a time duration, the distance change from the UE to the serving cell reference location is less than or not greater than the second threshold value at one time or over a time duration, the distance change from the UE to the serving cell reference location less the expected distance change due to movement of the access node or base station is less than or not greater than the third threshold value at one time or over a time duration, or the rate of distance change from the UE to the serving cell reference location is less than or not greater than the fourth threshold value at one time or over a time duration.

[0023] In some implementations of the methods and UE described herein, the at least one criterion for stationary state evaluation can include a terrestrial network (TN) area based criterion indicating one of a fifth threshold value for a distance change from the UE to at least one TN area reference location, or a sixth threshold value for a satisfaction status of a distance based criterion for the at least one TN area.

[0024] In some implementations of the methods and UE described herein, performing the relaxed measurement evaluation can include determining whether the TN area based criterion is satisfied based on a determination that one of the distance change from the UE to the at least one TN area reference location is less than or not greater than the fifth threshold value at one time or over a time duration, or the distance change from the UE to the at least one TN area reference location is less than or not greater than the sixth threshold value at one time or over a time duration.

[0025] In some implementations of the methods and UE described herein, the at least one criterion for stationary state evaluation can include a change in elevation criterion indicating one of: a change in elevation between the UE and the base station less a ninth threshold value of an expected change in elevation due to movement of the access node or base station, or a tenth threshold value of a rate of change in elevation between the UE and the base station.

[0026] In some implementations of the methods and UE described herein, performing the relaxed measurement evaluation can include determining whether the change in elevation criterion is satisfied based on determining one of: the change in elevation between the UE and the base station less the ninth threshold value of the expected change in elevation due to movement of the access node or base station is less than or not greater than for one or a duration of time, or the rate of change in elevation between the UE and the base station is less than or not greater than the tenth threshold value for one or a duration of time (if configured).

[0027] In some implementations of the methods and UE described herein, the at least one criterion for stationary state evaluation can include a change in elevation criterion indicating one of: a change in elevation between the UE and the base station less a ninth threshold value of an expected change in elevation due to movement of the access node or base station, or a tenth threshold value of a rate of change in elevation between the UE and the base station.

[0028] In some implementations of the methods and UE described herein, performing the relaxed measurement evaluation can include determining whether the change in elevation criterion is satisfied based on determining one of: the change in elevation between the UE and the base station less the ninth threshold value of the expected change in elevation due to movement of the access node or base station is less than or not greater than for one or a duration of time, or the rate of change in elevation between the UE and the base station is less than or not greater than the tenth threshold value for one or a duration of time (if configured).

[0029] In some implementations of the methods and UE described herein, the supplemental configuration for relaxed measurement evaluation can include at least one reference RSRP update rule, and the processor is configured to perform the relaxed measurement evaluation with the at least one reference RSRP update rule.

[0030] In some implementations of the methods and UE described herein, the at least one reference RSRP update rule can include one of: a first duration for a guard timer, a second duration for an update of a reference RSRP, an indication to ignore an update of a reference RSRP, or an update threshold value for a reference RSRP.

[0031] In some implementations of the methods and UE described herein, performing the relaxed measurement evaluation can include one of: refraining from an update of the reference RSRP for a first duration after starting a guard timer upon an update of the reference RSRP; updating the reference RSRP based on a determination that the current RSRP is greater than the reference RSRP for a second duration; ignoring an update of the reference RSRP upon receiving an indication; or updating the reference RSRP based on a determination that a difference between the current RSRP and the reference RSRP is equal to or greater than an update threshold.

[0032] In some implementations of the methods and UE described herein, the first configuration can include an RSRP-based stationary or low mobility criterion for relaxed measurements, and the supplemental configuration includes at least one offset to the RSRP-based stationary or low mobility criterion for relaxed measurements, and performing the relaxed measurement evaluation can include performing a stationary state evaluation based on the RSRP-based stationary or low mobility criterion with the at least one offset.

[0033] In some implementations of the methods and UE described herein, the at least one offset can include one of: an offset to a threshold of a change in RSRP used to evaluate the RSRP-based stationary or low mobility criterion; or an offset to a time period over which a change in RSRP for the stationary or low mobility criterion for relaxed measurements is evaluated.

[0034] In some implementations of the methods and UE described herein, the at least one offset can be associated with one of: a distance or a change in distance from the UE to the point; a propagation delay or timing advance (TA) or a change in propagation delay or TA between the UE and the base station; or an elevation angle or a change in elevation angle between the UE and the base station.

[0035] In some implementations of the methods and UE described herein, the supplemental configuration can further include at least one criterion for a non-cell edge state evaluation, and the UE can perform the relaxed measurement evaluation based at least on the at least one criterion for the non-cell edge state evaluation.

[0036] In some implementations of the methods and UE described herein, the at least one criterion for the non-cell edge state evaluation can include a distance change-based criterion indicating an eleventh threshold of a distance from the UE to a serving cell reference location, and performing the relaxed measurement evaluation can include determining that the distance change-based criterion is satisfied based on a determination that the distance from the UE to the serving cell reference location is one or for a certain duration less than or not greater than the eleventh threshold.

[0037] In some implementations of the methods and UE described herein, the at least one criterion for non-cell edge state evaluation can comprise a propagation delay or TA based criterion indicative of a twelfth threshold value of a propagation delay or TA between the UE and the base station, and performing the relaxed measurement evaluation can comprise determining that the propagation delay or TA based criterion is satisfied based on a determination that the propagation delay or TA between the UE and the base station is less than or not greater than the twelfth threshold value at one time or for a certain time duration.

[0038] In some implementations of the methods and UE described herein, the at least one criterion for non-cell edge state evaluation can comprise an elevation angle based criterion indicative of a thirteenth threshold value of an elevation angle between the UE and the base station, and performing the relaxed measurement evaluation can comprise determining that the elevation angle based criterion is satisfied based on a determination that the elevation angle between the UE and the base station is less than or not greater than the thirteenth threshold value at one time or for a certain time duration.

[0039] In some implementations of the methods and UE described herein, the UE can be a reduced capability (Redcap) UE.

[0040] In some implementations of the methods and base station described herein, the first configuration can comprise at least one of: a reference signal received power (RSRP) based stationary or low mobility criterion for relaxed measurements; or a RSRP / reference signal received quality (RSRQ) based non-cell edge criterion for relaxed measurements.

[0041] In some implementations of the methods and base station described herein, the indication associated with the neighbor cell measurement trigger can comprise one of: an indication of a time based neighbor cell measurement trigger or an indication of a distance based neighbor cell measurement trigger.

[0042] In some implementations of the methods and base station described herein, the indication of the time based neighbor cell measurement trigger can comprise one of a time to stop serving of a serving non-terrestrial network (NTN) cell or a feeder link switch time.

[0043] In some implementations of the methods and base station described herein, the indication of the distance based neighbor cell measurement trigger can comprise a reference location or a distance threshold value.

[0044] In some implementations of the methods and base station described herein, the supplemental configuration for relaxed measurement evaluation can comprise at least one criterion for stationary state evaluation.

[0045] In some implementations of the method and base station described herein, the at least one criterion for stationary state evaluation can include a distance change based criterion indicating one of a first threshold value for a distance change from the UE to a previous UE reference location, a second threshold value for a distance change from the UE to a serving cell reference location, a third threshold value for a distance change from the UE to a serving cell reference location minus an expected distance change due to movement of the access node or base station, or a fourth threshold value for a rate of distance change from the UE to a serving cell reference location.

[0046] In some implementations of the method and base station described herein, the at least one criterion for stationary state evaluation can include a terrestrial network (TN) area based criterion indicating one of a fifth threshold value for a distance change from the UE to at least one TN area reference location, or a sixth threshold value for a satisfaction status of a distance based criterion for at least one TN area.

[0047] In some implementations of the method and base station described herein, the at least one criterion for stationary state evaluation can include a propagation delay change based criterion or a TA delay change based criterion indicating one of a seventh threshold value for a propagation delay or TA change between the UE and the base station minus an expected propagation delay or TA change due to movement of the access node or base station.

[0048] In some implementations of the method and base station described herein, the at least one criterion for stationary state evaluation can include an elevation angle change based criterion indicating one of a ninth threshold value for an elevation angle change between the UE and the base station minus an expected elevation angle change due to movement of the access node or base station, or a tenth threshold value for a rate of elevation angle change between the UE and the base station.

[0049] In some implementations of the method and base station described herein, the supplemental configuration for relaxed measurement evaluation can include at least one reference RSRP update rule.

[0050] In some implementations of the method and base station described herein, the at least one reference RSRP update rule can include one of a first duration for a guard timer, a second duration for an update of a reference RSRP, an indication to ignore an update of a reference RSRP, or an update threshold value for a reference RSRP.

[0051] In some implementations of the method and base station described herein, the first configuration can include a RSRP based stationary or low mobility criterion for relaxed measurements, and the supplemental configuration includes at least one offset to the RSRP based stationary or low mobility criterion for relaxed measurements.

[0052] In some implementations of the method and base station described herein, the at least one offset can include one of: an offset to a threshold of a change in RSRP used to evaluate the RSRP-based stationary or low mobility criterion; or an offset to a time period during which a change in RSRP of the relaxed measurement stationary or low mobility criterion is evaluated.

[0053] In some implementations of the method and base station described herein, the at least one offset can be associated with one of: a distance or distance change from the UE to the point; a propagation delay or timing advance (TA) or a change in propagation delay or TA between the UE and the base station; or an elevation angle or an elevation angle change between the UE and the base station.

[0054] In some implementations of the method and base station described herein, the supplemental configuration can include at least one criterion for non-cell edge state evaluation.

[0055] In some implementations of the method and base station described herein, the at least one criterion for non-cell edge state evaluation can include one of: a distance change-based criterion indicating an eleventh threshold of a distance from the UE to a serving cell reference location; a propagation delay-based or TA-based criterion indicating a twelfth threshold of a propagation delay or TA between the UE and the base station; or a thirteenth threshold of an elevation angle between the UE and the base station.

[0056] In some implementations of the method and base station described herein, the base station is located at or communicates with the UE via a satellite. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 FIGURE 1 illustrates an example of a wireless communication system in which some embodiments of the disclosure can be implemented;

[0058] Figure 2 FIGURE 2 illustrates an example of a process flow in accordance with some example embodiments of the disclosure;

[0059] Figures 3A-3E FIGURE 3 illustrates a schematic diagram of enhanced stationary state evaluation in accordance with some example embodiments of the disclosure;

[0060] Figure 4 FIGURE 4 illustrates another example of a process flow in accordance with some example embodiments of the disclosure;

[0061] Figure 5 FIGURE 5 illustrates an example of a device suitable for implementing some embodiments of the disclosure;

[0062] Figure 6 FIGURE 6 illustrates an example of a processor suitable for implementing some embodiments of the disclosure;

[0063] Figure 7FIG. 1 illustrates another example of a device suitable for implementing some embodiments of the disclosure;

[0064] Figure 8 FIG. 1 illustrates another example of a device suitable for implementing some embodiments of the disclosure;

[0065] Figure 9 FIG. 1 illustrates another example of a device suitable for implementing some embodiments of the disclosure;

[0066] Figure 10 FIG. 1 illustrates another example of a device suitable for implementing some embodiments of the disclosure.

[0067] Throughout the drawings, identical or similar reference labels can represent same or similar elements. DETAILED DESCRIPTION

[0068] The principles of the present disclosure will now be described with reference to some embodiments. It should be understood that these embodiments are described for illustrative purposes only and help the skilled person to understand and implement the present disclosure without imposing any limitation on the scope of the present disclosure. The present disclosure described herein can be implemented in various ways other than those described below. In the following description and claims, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs unless otherwise defined.

[0069] Reference in the present disclosure to “one embodiment”, “an example embodiment”, and “an embodiment” and the like means that a described (multiple) embodiment can include a particular feature, structure, or characteristic, but every embodiment can not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases are not necessarily referring to the same (multiple) embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of those skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

[0070] It should be understood that although the terms “first” and “second” and the like can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the associated terms. In some examples, a value, process, or apparatus is referred to as “best,” “lowest,” “highest,” “smallest,” “largest,” etc. It will be understood that such terms are intended to refer to the selection of one alternative over others, and not necessarily to the preference of one alternative over another.

[0071] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments. As used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and / or "including" when used herein, specify the presence of stated features, elements, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. For example, the term "comprises" and variations thereof shall not be construed as a limitation on the comprising features, elements, components and / or combinations thereof but rather as an open term meaning "including, but not limited to." The term "based on" shall not be construed as a limitation on the features, elements, components and / or combinations thereof, but rather as an open term meaning "based, at least in part, on." The term "one embodiment" and "an embodiment" shall not be construed as a limitation on the features, elements, components and / or combinations thereof, but rather as an open term meaning "at least one embodiment." The term "another embodiment" shall not be construed as a limitation on the features, elements, components and / or combinations thereof, but rather as an open term meaning "at least one other embodiment." Expressions such as "A and / or B" can mean "A or B" or "both A and B." Other explicit and implicit definitions can be included below.

[0072] In 3GPP TS 38.300 v17.4.0, the relaxed measurement principle for RedCap UEs is described in 16.13.4 as:

[0073] The present disclosure mainly focuses on the RRM relaxed measurement for RedCap in RRC_IDLE and RRC_INACTIVE, in 3GPP TS 38.304, the evaluation procedure for relaxed measurement is defined as

[0074] Details on the stationary criterion and non-cell-edge criterion:

[0075] NTN (Non-Terrestrial Network) refers to a network or network segment that uses RF (Radio Frequency) resources on satellites. The satellites in NTN can be GEO (Geostationary Earth Orbit) satellites with fixed positions relative to the Earth, or LEO (Low Earth Orbit) satellites that orbit the Earth. 3GPP Rel-17 specifications have already provided basic support for NTN features, and further enhancements will be studied in Rel-18.

[0076] In Rel-17, time-based and distance-based neighbor cell measurement triggers are introduced for NTN GEO fixed cells and NTN LEO quasi-geostationary cells in NR-NTN as described in 3GPP TS 38.304:

[0077] In the ongoing discussion for Rel-18 NTN, neighbor cell measurement triggers are now considering earth-moving cells to see if time-based and distance-based triggers can be applied. At the same time, TN area indication is also under discussion to help the UE avoid unnecessary measurements on some TN frequencies based on the UE’s distance to the TN area.

[0078] First, neighbor cell measurement triggering and relaxed measurement evaluation are two different procedures, where the relaxed measurement criterion fulfillment is evaluated after the neighbor cell measurement is triggered. Second, the time-based and distance-based neighbor cell measurement triggers introduced in NTN provide an opportunity to avoid unnecessary evaluation of relaxed measurements. In addition, the distance-based neighbor cell measurement trigger and TN area indication also provide distance information that can be reused or referenced in some proposed solutions regarding distance changes.

[0079] Currently, discussions on the Rel-19 scope are still ongoing. For Rel-19 NTN enhancements, it is proposed to support RedCap UEs in NTN to further expand the use cases of RedCap and the potential market of NTN. In order to support RedCap UEs in NTN deployment, some technical issues brought by NTN characteristics need to be addressed, including satellite mobility and the impact of corresponding NTN cell validity and mobility on relaxed measurement criterion evaluation. In this disclosure, the following issues are identified.

[0080] Issue #1: For RRC_IDLE and RRC_INACTIVE, it can not always be feasible or necessary for the UE to evaluate relaxed measurements due to satellite mobility and the corresponding NTN cell validity changes and mobility.

[0081] In NTNs deployed with LEO satellites, NTN cells are temporarily active depending on the movement of their corresponding satellites. For quasi-fixed NTN cells temporarily anchored to the Earth (i.e., the cell does not move with the satellite), the entire cell becomes inactive when the corresponding LEO satellite approaches its t-Service time or its feeder link switch time (t-FLswitch). For earth-moving NTN cells that move on Earth (i.e., the cell moves with the satellite), the cell becomes inactive at a certain location when its coverage area leaves, or when the corresponding LEO satellite approaches its feeder link switch time (t-FLswitch).

[0082] In either of the above scenarios, neighboring cell measurements may be required due to the fulfillment of NTN-specific time / distance-based conditions (e.g., the UE needs to perform neighboring cell measurements before t-Service, or when the distance from the UE to the cell reference location is greater than distanceThresh). In such cases, considering that the current serving cell is about to disappear and therefore it is neither suitable nor necessary to evaluate lenient measurements, it is expected that the UE will need to perform measurements on possible neighboring cells as early as possible.

[0083] Case #1-1: RedCap UE broadcast by NTN cell in SIB2 stationaryMobilityEvaluation (i.e., lenient measurement assessment is enabled) and optional cellEdgeEvaluationWhileStationary Service is being provided. The NTN cell is nearing its service termination date. t-Service ) or feeder link switching time ( t-FLswitch Or it is leaving its coverage area due to movement. At a specific time ( t-Service , t-FLswitch Before a time point estimated by the UE, intra-frequency, inter-frequency, or inter-RAT measurements of neighboring cells are required. In this case, the serving NTN cell will inevitably disappear, rendering lenient measurements meaningless, and the UE should not assess whether lenient measurements can be applied.

[0084] Case #1-2: RedCap UE broadcast by NTN cell in SIB2 stationaryMobilityEvaluation (i.e., lenient measurement assessment is enabled) and optional cellEdgeEvaluationWhileStationary Service is provided. Due to satellite movement, the Earth Moving NTN cell is leaving its coverage area. This is due to distance-based standards (i.e., from the UE to the cell reference location). referenceLocation The distance is greater than distanceThreshThe serving NTN cell will inevitably disappear, making relaxed measurements pointless and the UE should not evaluate whether relaxed measurements can be applied.

[0085] Case #1-3: RedCap UE is broadcasted by NTN cell in SIB2 stationaryMobilityEvaluation (i.e. relaxed measurement evaluation is enabled) and optional cellEdgeEvaluationWhileStationary is provided. Due to UE mobility, the UE is leaving the NTN cell coverage area. Due to the distance-based criterion (i.e. the distance from the UE to the cell reference location referenceLocation is greater than distanceThresh ) is fulfilled, intra-frequency, inter-frequency or inter-RAT measurements on neighboring cells are required. In this case, the serving NTN cell can or can not disappear, relaxed measurements can still be meaningful. The UE can continue to evaluate whether relaxed measurements can be applied.

[0086] Case #1-4: RedCap UE is broadcasted by NTN cell in SIB2 stationaryMobilityEvaluation (i.e. relaxed measurement evaluation is enabled) and optional cellEdgeEvaluationWhileStationary is provided. Due to the RSRP / RSRQ-based criterion (i.e. the distance from the UE to the cell reference location referenceLocation is greater than distanceThresh ) is fulfilled, intra-frequency, inter-frequency or inter-RAT measurements on neighboring cells are required. This case is not different from TN, relaxed measurements can still be meaningful. The UE can continue to evaluate whether relaxed measurements can be applied.

[0087] Problem 2: For RRC_IDLE and RRC_INACTIVE, UE stationary state evaluation in NTN cell can not rely on RSRP variation.

[0088] The traditional stationary state evaluation is based on RSRP variation, which is clear when the UE moves towards or away from the cell center due to the eNB / gNB’s proximity effect and fixed location in TN. However, in NTN, this unique criterion can not work well. For NTN with at least GEO satellites deployed, even if the UE moves due to the high altitude of GEO, the RSRP variation can be negligible; for NTN with LEO satellites deployed, even if the UE is stationary, the satellite movement can cause RSRP variation. In either case, RSRP variation as the only criterion can not represent the UE’s stationary state.

[0089] Case #2-1: RedCap UE is broadcasted by GEO satellite in SIB2 stationaryMobilityEvaluationThe generated NTN cell provides service (i.e., lenient measurement assessment is enabled). The RSRP difference between the two locations within the cell is not significant. If the smaller S... SearchDeltaP-Stationary When configured in SIB2, few RedCap UEs can meet the static criterion, resulting in increased power consumption due to normal measurements. If a larger S... SearchDeltaP-Stationary When configured in SIB2, most RedCap UEs can meet the stationary criterion, and therefore may not be able to detect neighboring cells in a timely manner.

[0090] Case #2-2: RedCap UE broadcast by LEO satellite in SIB2 stationaryMobilityEvaluation The generated NTN cell provides service (i.e., lenient measurement assessment is enabled). The movement of LEO satellites causes significant variations in RSRP at the same location. These RSRP variations make it more difficult for the UE to... SearchDeltaP-Stationary Internal satisfaction (Srxlev) RefStationary -Srxlev) SearchDeltaP-Stationary If the NTN cell is not nearing its service outage time or feeder link handover time, it is expected that a lenient measurement can be applied to a stationary UE as early as possible. RSRP variations may lead to frequent satisfaction of (Srxlev-Srxlev) values. RefStationary )>0, thus frequently updating Srxlev RefStationary This also makes it more difficult for UE to perform T SearchDeltaP-Stationary Internal satisfaction (Srxlev) RefStationary -Srxlev) SearchDeltaP-Stationary If the NTN cell is not nearing its service outage or feeder link handover time, it is expected that a stationary UE can apply lenient measurements as early as possible. With a constant PCI, where the serving cell configuration remains unchanged in upcoming cells, RSRP may vary significantly due to satellite changes. Most RedCap UEs that meet the stationary criteria will exit lenient measurements, resulting in higher power consumption due to normal measurements.

[0091] Question #3: For RRC_IDLE and RRC_INACTIVE, the non-cell edge state assessment of the UE in the NTN cell can be independent of RSRP / RSRQ.

[0092] ​​Similar to Question 2, traditional non-cell edge state assessment is based on RSRP or RSRQ. When the UE approaches / moves away from the cell center, RSRP or RSRQ is significantly higher / lower due to the near-far effect in the TN. However, in NTNs, this sole criterion may be ineffective. For NTNs with at least GEO satellites deployed, the difference in RSRP / RSRQ between the cell center and cell edge is not significant due to the high altitude of GEO satellites; for NTNs with LEO satellites deployed, even if the UE is located at the cell center, satellite movement can cause changes in RSRP / RSRQ. In either case, RSRP / RSRQ, as the sole criterion, may not accurately represent the UE's non-cell edge state.

[0093] Case #3-1: RedCap UE broadcast by GEO satellite in SIB2 stationaryMobilityEvaluation and cellEdgeEvaluationWhileStationary The generated NTN cell provides service (i.e., lenient measurement assessment is enabled). The RSRP / RSRQ difference between the cell center and cell edge is not significant. If the smaller S... SearchThresholdP2 or S SearchThresholdQ2 When configured in SIB2, few RedCap UEs meet the non-cell edge criteria, resulting in higher power consumption due to normal measurements. If a larger S... SearchThresholdP2 or S SearchThresholdQ2 When configured in SIB2, most RedCap UEs can meet the non-cell edge criteria and therefore may not be able to detect neighboring cells in a timely manner.

[0094] Scenario 3-2: RedCap UE broadcast by LEO satellite in SIB2 stationaryMobilityEvaluation and cellEdgeEvaluationWhileStationary The generated NTN cell provides service (i.e., lenient measurement assessment is enabled). The motion of the LEO satellite causes changes in RSRP / RSRQ at the same location. If the smaller S... SearchThresholdP2 or S SearchThresholdQ2 When configured in SIB2, few RedCap UEs meet the non-cell edge criteria, resulting in higher power consumption due to normal measurements. If a larger S... SearchThresholdP2 or S SearchThresholdQ2 Configured in SIB2, most RedCap UEs can meet the non-cell edge criteria and therefore may not be able to detect neighboring cells in a timely manner. With the PCI unchanged, where the serving cell configuration remains the same in upcoming cells, RSRP / RSRQ may change significantly due to satellite variations. Most RedCap UEs that meet the non-cell edge criteria will exit the lenient measurement phase, resulting in higher power consumption due to normal measurement.

[0095] For Rel-19, it is recommended to consider supporting relaxed measurements for the UE in the NTN, but no detailed targets for relaxed measurements are mentioned. In this regard, considering the issues mentioned above, further research is needed to enhance relaxed measurements.

[0096] According to embodiments of this disclosure, for situations where cell changes may be unavoidable (e.g., neighboring cell measurements are triggered by time / distance-based standards in the NTN), the logic for applying lenient measurement evaluation in the UE is modified to allow the UE to ignore or disable the evaluation, thereby reducing UE power consumption and preventing the UE from entering lenient measurement.

[0097] For scenarios where no unavoidable cell changes are anticipated, and considering the drawbacks of using signal strength as the sole metric for NTN cells, enhancements to the stationary state and non-cell edge state assessments for lenient measurements are introduced. In some embodiments, enhancements may include new criteria based on distance variation, terrestrial network (TN) area, propagation delay variation, and elevation angle variation in the stationary state; adding a reference RSRP update rule to the traditional RSRP variation-based stationary state assessment criterion; adding an additional offset to the traditional RSRP variation-based stationary state assessment criterion; and new criteria based on distance, propagation delay, and elevation angle for non-cell edge state assessment.

[0098] The embodiments of this disclosure can avoid unnecessary evaluations and ensure accurate evaluation of loose measurements while taking into account NTN characteristics. The embodiments of this disclosure can operate at least in NTN scenarios to guarantee proper evaluation and entry / exit of loose measurements for the UE. Note that these embodiments are also applicable to other network scenarios. Various aspects of this disclosure are described in the context of wireless communication systems.

[0099] Figure 1The illustration shows an example of a wireless communication system 100 in which some embodiments of the present disclosure may be implemented. The wireless communication system 100 may include one or more network entities 102 (also referred to as network devices (NEs)), one or more UEs 104, a core network 106, and a packet data network 108. The wireless communication system 100 may support various radio access technologies. In some implementations, the wireless communication system 100 may be a 4G network, such as an LTE network or an Advanced LTE (LTE-A) network. In some other implementations, the wireless communication system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communication system 100 may be a combination of 4G and 5G networks, or other suitable radio access technologies, including IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20. The wireless communication system 100 may support radio access technologies other than 5G. Furthermore, the wireless communication system 100 may support technologies such as Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), or Code Division Multiple Access (CDMA).

[0100] One or more network entities 102 may be distributed throughout a geographic area to form a wireless communication system 100. One or more of the network entities 102 described herein may be, include, or may be referred to as network nodes, base stations, network elements, radio access networks (RANs), base transceiver stations, access points, NodeBs, eNodeBs (eNBs), next-generation NodeBs (gNBs), or other suitable terms. Network entities 102 and UE 104 may communicate via communication link 110, which may be a wireless or wired connection. For example, network entities 102 and UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) via a Uu interface. In a 3GPP non-terrestrial network (NTN), a satellite-based network entity 102 may communicate directly with UE 104 using an NR / LTE Uu interface. The satellite may be a transparent satellite or a regenerated satellite. For an NTN with transparent satellites, a base station on Earth can communicate with the UE via the satellite. For an NTN with regenerated satellites, the base station may be on a ship and can communicate directly with the UE.

[0101] Network entity 102 may provide a geographic coverage area 112 for which network entity 102 supports services (e.g., voice, video, packet data, messaging, broadcasting, etc.) for one or more UEs 104 within the geographic coverage area 112. For example, network entity 102 and UE 104 may support wireless communication of signals associated with services (e.g., voice, video, packet data, messaging, broadcasting, etc.) based on one or more wireless access technologies. In some implementations, network entity 102 may be mobile, for example, a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but different geographic coverage areas 112 may be associated with different network entities 102. The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0102] One or more UEs 104 may be distributed throughout the geographic area of ​​the wireless communication system 100. UE 104 may include or be referred to as a mobile device, wireless device, remote device, remote unit, handheld device, subscriber device, or some other suitable term. In some implementations, UE 104 may be referred to as a unit, station, terminal, or client, etc. Alternatively or additionally, UE 104 may be referred to as an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a Machine Type Communication (MTC) device, etc. In some implementations, UE 104 may be stationary within the wireless communication system 100. In some other implementations, UE 104 may be mobile within the wireless communication system 100.

[0103] One or more UEs 104 can be devices of different forms or with different capabilities. Figure 1 The diagram illustrates some examples of UE 104. UE 104 is capable of communicating with various types of devices, such as network entity 102, other UEs 104, or network devices (e.g., core network 106, packet data network 108, relay equipment, integrated access and backhaul (IAB) node, or another network device). Figure 1 As shown. Alternatively, UE 104 may support communication with other network entities 102 or UE 104 that may act as relays in wireless communication system 100.

[0104] UE 104 can also support direct wireless communication with other UE 104s via communication link 114. For example, UE 104 can support direct wireless communication with another UE 104 via a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular V2X deployments, communication link 114 may be referred to as a sidechain. For example, UE 104 can support direct wireless communication with another UE 104 via a PC5 interface.

[0105] Network entity 102 may support communication with core network 106 or with another network entity 102, or both. For example, network entity 102 may interface with core network 106 via one or more backhaul links 116 (e.g., via S1, N2, N3, or another network interface). Network entities 102 may communicate with each other via backhaul links 116 (e.g., via X2, Xn, or another network interface). In some implementations, network entities 102 may communicate directly with each other (e.g., between network entities 102). In some other implementations, network entities 102 may communicate with each other or indirectly (e.g., via core network 106). In some implementations, one or more network entities 102 may include sub-components, such as access network entities, which may be examples of access node controllers (ANCs). An ANC may communicate with one or more UEs 104 via one or more other access network transport entities (which may be referred to as radio headends, smart radio headends, or transmit-receive points (TRPs)).

[0106] In some implementations, network entity 102 can be configured with a decomposed architecture that can utilize protocol stacks physically or logically distributed across two or more network entities 102, such as an Integrated Access Backhaul (IAB) network, Open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or Virtualized RAN (vRAN) (e.g., Cloud RAN (C-RAN)). For example, network entity 102 may include one or more of a Central Unit (CU), Distributed Unit (DU), Radio Unit (RU), RAN Intelligent Controller (RIC) (e.g., near real-time RIC, non-real-time RIC), Service Management and Orchestration (SMO) system, or any combination thereof.

[0107] An RU can also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or transmit-receive point (TRP). In a decomposed RAN architecture, one or more components of network entity 102 can be co-located, or one or more components of network entity 102 can be located in distributed locations (e.g., separate physical locations). In some implementations, one or more network entities 102 in a decomposed RAN architecture can be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0108] The functional decomposition between CU, DU, and RU can be flexible and can support different functions based on the functions performed at the CU, DU, or RU (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combination thereof). For example, a protocol stack functional decomposition can be used between the CU and DU, allowing the CU to support one or more layers of the protocol stack and the DU to support one or more different layers of the protocol stack. In some implementations, the CU can host upper-layer protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functions and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). The CU can connect to one or more DUs or RUs, and one or more DUs or RUs can host lower-layer protocol layer functions and signaling, such as Layer 1 (L1) (e.g., Physical (PHY) layer) or L2 (e.g., Radio Link Control (RLC) layer, Media Access Control (MAC) layer), and each can be at least partially controlled by the CU 160.

[0109] Alternatively, a functional split of the protocol stack can be employed between the DU and RU, allowing the DU to support one or more layers of the protocol stack and the RU to support one or more different layers of the protocol stack. The DU can support one or more different cells (e.g., via one or more RUs). In some implementations, the functional split between the CU and DU, or between the DU and RU, can be within the protocol layer (e.g., some functions of the protocol layer can be performed by one of the CU, DU, or RU, while other functions of the protocol layer are performed by different items in the CU, DU, or RU).

[0110] The CU can be further functionally decomposed into CU control plane (CU-CP) and CU user plane (CU-UP) functions. The CU can be connected to one or more DUs via mid-range communication links (e.g., F1, F1-C, F1-U), and the DUs can be connected to one or more RUs via fronthaul communication links (e.g., open fronthaul (FH) interfaces). In some implementations, the mid-range or fronthaul communication links can be implemented based on interfaces (e.g., channels) between layers of a protocol stack supported by the respective network entity 102 communicating via such communication links.

[0111] Core network 106 can support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. Core network 106 can be an evolved packet core (EPC) or a 5G core (5GC), which may include control plane entities that manage access and mobility (e.g., a mobility management entity (MME), access and mobility management functions (AMF)) and user plane entities that route packets or interconnects to external networks (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). In some implementations, the control plane entities may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signaling bearers, etc.) of one or more UEs 104 served by one or more network entities 102 associated with core network 106.

[0112] Core network 106 can communicate with packet data network 108 via one or more backhaul links 116 (e.g., via S1, N2, N3, or another network interface). Packet data network 108 may include application server 118. In some implementations, one or more UEs 104 may communicate with application server 118. UE 104 may establish a session (e.g., Protocol Data Unit (PDU) session, etc.) with core network 106 via network entity 102. Core network 106 can use the established session (e.g., an established PDU session) to route services (e.g., control information, data, etc.) between UE 104 and application server 118. A PDU session may be an example of a logical connection between UE 104 and core network 106 (e.g., one or more network functions of core network 106).

[0113] In the wireless communication system 100, network entity 102 and UE 104 can use the resources of the wireless communication system 100 (e.g., time resources (e.g., symbols, time slots, subframes, frames, etc.) or frequency resources (e.g., subcarriers, carriers)) to perform various operations (e.g., wireless communication). In some implementations, network entity 102 and UE 104 can support different resource structures. For example, network entity 102 and UE 104 can support different frame structures. In some implementations, such as in 4G, network entity 102 and UE 104 can support a single frame structure. In some other implementations, such as in 5G and other suitable radio access technologies, network entity 102 and UE 104 can support various frame structures (i.e., multiple frame structures). Network entity 102 and UE 104 can support various frame structures based on one or more digital technologies.

[0114] One or more digital technologies may be supported in the wireless communication system 100, and the digital technologies may include subcarrier spacing and cyclic prefixes. A first digital technology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15kHz) and a normal cyclic prefix. In some implementations, the first digital technology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15kHz) may utilize one time slot per subframe. A second digital technology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30kHz) and a normal cyclic prefix. A third digital technology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth digital technology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120kHz) and a normal cyclic prefix. A fifth digital technology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240kHz) and a normal cyclic prefix.

[0115] The time intervals of resources (e.g., communication resources) can be organized according to frames (also called radio frames). Each frame can have a duration, for example, 10 milliseconds (ms). In some implementations, each frame can include multiple subframes. For example, each frame can include 10 subframes, and each subframe can have a duration, for example, 1 ms. In some implementations, each frame can have the same duration. In some implementations, each subframe of a frame can have the same duration.

[0116] Alternatively or concurrently, the time intervals of resources (e.g., communication resources) can be organized according to time slots. For example, a subframe may include a certain number (e.g., quantity) of time slots. The number of time slots in each subframe may also depend on one or more digital technologies supported in the wireless communication system 100. For example, a first, second, third, fourth, and fifth digital technology (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with corresponding subcarrier intervals of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize one time slot per subframe, two time slots per subframe, four time slots per subframe, eight time slots per subframe, and 16 time slots per subframe, respectively. Each time slot may include a certain number (e.g., quantity) of symbols (e.g., OFDM symbols). In some implementations, the number (e.g., quantity) of time slots in a subframe may depend on the digital technology. For a common cyclic prefix, a time slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable to a 60 kHz subcarrier spacing), a time slot may include 12 symbols. The relationship between the number of symbols per time slot, the number of time slots per subframe, and the number of time slots per frame for both regular and extended cyclic prefixes can depend on the digital technique. It should be understood that references to a first digital technique (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) can be used interchangeably between subframes and time slots.

[0117] In the wireless communication system 100, the electromagnetic (EM) spectrum can be divided into various categories, frequency bands, frequency channels, etc., based on frequency or wavelength. For example, the wireless communication system 100 can support one or more operating frequency bands, such as frequency range names FR1 (410MHz-7.125GHz), FR2 (24.25GHz-52.6GHz), FR3 (7.125GHz-24.25GHz), FR4 (52.6GHz-114.25GHz), FR4a or FR4-1 (52.6GHz-71GHz), and FR5 (114.25GHz-300GHz). In some implementations, network entity 102 and UE 104 can perform wireless communication on one or more operating frequency bands. In some implementations, FR1 can be used by network entity 102 and UE 104, along with other devices or apparatuses, for cellular communication services (e.g., control information, data). In some implementations, FR2 can be used by network entity 102 and UE 104, along with other devices or apparatuses, for short-range, high data rate capabilities.

[0118] FR1 can be associated with one or more digital technologies (e.g., at least three digital technologies). For example, FR1 can be associated with: a first digital technology (e.g., μ=0) comprising a subcarrier spacing of 15 kHz; a second digital technology (e.g., μ=1) comprising a subcarrier spacing of 30 kHz; and a third digital technology (e.g., μ=2) comprising a subcarrier spacing of 60 kHz. FR2 can be associated with one or more digital technologies (e.g., at least two digital technologies). For example, FR2 can be associated with: a third digital technology (e.g., μ=2) comprising a subcarrier spacing of 60 kHz; and a fourth digital technology (e.g., μ=3) comprising a subcarrier spacing of 120 kHz.

[0119] Figure 2 The illustration shows an example of a processing flow according to some exemplary embodiments of the present disclosure. Processing flow 200 may involve a user equipment (UE) 201 and a base station 202. Processing flow 200 can be applied to reference... Figure 1 The wireless communication system 100 may include, for example, UE 201, which may be UE 104, and base station 202, which may be network entity 102. In some embodiments, UE 201 may be a redcapped UE. In some embodiments, base station 202 may be located at or communicate with UE 201 via a satellite. It should be understood that the processing flow 200 may be applied to other communication scenarios, which will not be described in detail hereafter.

[0120] Base station 202 determines 210 a first configuration for lenient measurement assessment and a second configuration for neighboring cell measurement. The second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configuration for lenient measurement assessment.

[0121] In some embodiments, the first configuration may include a stationary or low-mobility standard based on a reference signal received power (RSRP) for lenient measurement. For example, the RSRP-based stationary or low-mobility standard may include information elements based on RSRP variations. stationaryMobilityEvaluation Optionally, the RSRP-based stationary or low-mobility standard may include a non-cell edge standard based on RSRP / Reference Signal Received Quality (RSRQ) for lenient measurement. For example, the RSRP / RSRQ-based non-cell edge standard may include information elements based on the RSRP / RSRQ level at UE 201. cellEdgeEvaluationWhileStationary T-Service .

[0122] In some embodiments, the indication associated with neighboring cell measurement triggering may include an indication of time-based neighboring cell measurement triggering. For example, an indication of time-based neighboring cell measurement triggering may be the service termination time of the serving NTN cell (T-FLswitch ) or feeder link switching time ( Figures 3A-3E Alternatively or concurrently, indications associated with neighboring cell measurement triggering may include indications for distance-based neighboring cell measurement triggering. For example, indications for distance-based neighboring cell measurement triggering may include a reference location or a distance threshold.

[0123] In some embodiments, the supplementary configuration included in the second configuration may include at least one criterion for stationary state assessment. The at least one criterion for stationary state assessment may include one or more of the following: a criterion based on distance variation, a criterion based on terrestrial network (TN) area, a criterion based on propagation delay variation, a criterion based on TA delay variation, or a criterion based on elevation angle variation. Each criterion for stationary state assessment may indicate one or more thresholds for UE 201 to assess its stationary or low-mobility state. Reference will be made below. T-Service These standards are described in detail.

[0124] In some embodiments, supplementary configuration may include at least one criterion for non-cell edge state assessment. The at least one criterion for non-cell edge state assessment may include one or more of a distance-based criterion, a propagation delay-based or TA-based criterion, and an elevation angle-based criterion. Each criterion may indicate one or more thresholds for UE 201 to assess its non-cell edge state, which will be described in detail below.

[0125] In some embodiments, supplementary configuration may include at least one reference RSRP update rule. The reference RSRP update rule (multiple rules) may include one or more of the following: the duration of a protection timer, the duration of a reference RSRP update, an indication to ignore reference RSRP updates, or a reference RSRP update threshold.

[0126] In some embodiments, the first configuration may include a RSRP-based stationary or low-mobility criterion for lenient measurement, and the supplementary configuration may include at least one offset of the RSRP-based stationary or low-mobility criterion for lenient measurement. For example, the offset may be a threshold to which the RSRP change of the RSRP-based stationary or low-mobility criterion is evaluated (e.g., conventional S...). searchDeltaP-Stationary The offset, or it could be the period during which the RSRP change of a stationary or low-mobility standard used for lenient measurements is evaluated (e.g., conventional T). searchDeltaP-Stationary The offset of the non-cell edge standard for lenient measurement. In some embodiments, the first configuration may include an RSRP / RSRQ-based non-cell edge standard for lenient measurement, and the supplementary configuration may include at least one offset of the RSRP / RSRQ-based non-cell edge standard. For example, the offset may be a threshold for evaluating the non-cell edge standard for lenient measurement (e.g., conventional S).SearchThresholdP2 The offset, or it could be a threshold used to evaluate non-cell edge criteria for lenient measurements (e.g., conventional S). SearchThresholdQ2 The offset of ).

[0127] In some embodiments, the offset included in the supplementary configuration may be associated with one or more of the following: distance or distance change from UE 201 to the point; propagation delay or timing advance (TA) or propagation delay or TA change between UE and base station; or elevation angle or elevation change between UE and base station.

[0128] Base station 202 sends 220 a first configuration and 225 a second configuration to UE 201. In some embodiments, the first configuration may be carried in System Information Block 2 (SIB2), and the second configuration may be carried in SIB3, SIB4, SIB5, or SIB19. On the other side of the communication, UE 201 receives 230 the first configuration and 225 a second configuration from base station 202.

[0129] UE 201 performs a 240-degree loose measurement assessment based on a first configuration and a second configuration. As described above, the second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configurations for loose measurement assessment. In some embodiments, UE 201 may select to ignore or disable loose measurement assessment based on the indication associated with neighboring cell measurement triggering to avoid unnecessary assessments (for Solution #1). In some embodiments, UE 201 may use supplementary configurations to perform loose measurement assessments to ensure accurate assessment of loose measurements while taking into account network characteristics (for Solutions #2 and #3).

[0130] In some embodiments, the indication associated with neighboring cell measurement triggering may include a time-based indication of neighboring cell measurement triggering (e.g., service stoppage time). T-FLswitch or feeder link switching time Figure 3A UE 201 can determine whether the fulfillment of a time-based criterion requires neighboring cell measurements based on an indication triggered by time-based neighboring cell measurements. For example, when the interval between the current time and the service end time or feeder link handover time is less than a time threshold, i.e., the serving NTN cell is nearing the end of service, UE 201 can determine that the time-based criterion is met. If it is determined that the fulfillment of the time-based criterion requires neighboring cell measurements, UE 201 can ignore the lenient measurement assessment. If it is determined that the fulfillment of the time-based criterion does not require neighboring cell measurements, UE 201 can continue with the lenient measurement assessment.

[0131] In some embodiments, the indication associated with neighboring cell measurement triggering may include a distance-based neighboring cell measurement triggering indication. As described above, the distance-based neighboring cell measurement triggering indication includes a reference location or a distance threshold. In some embodiments, when the distance from UE 201 to the reference location is greater than the distance threshold, UE 201 may determine that a distance-based criterion is met.

[0132] In some embodiments, UE 201 may determine whether a distance-based criterion requires neighbor cell measurement based on an indication triggered by distance-based neighbor cell measurement. If it is determined that satisfying the distance-based criterion requires neighbor cell measurement, UE 201 may ignore a lenient measurement assessment. Alternatively, if it is determined that satisfying the distance-based criterion requires neighbor cell measurement, and the serving NTN cell of UE 201 is a Earth-mobile cell, UE 201 may continue with a lenient measurement assessment. Alternatively, if it is determined that satisfying the distance-based criterion does not require neighbor cell measurement, UE 201 may continue with a lenient measurement assessment.

[0133] In some embodiments, UE 201 can determine whether the satisfaction of the RSRP / RSRQ-based standard requires neighboring cell measurements. If so, UE 201 can proceed with a lenient measurement evaluation, and an offset is applied to the first configuration. For example, UE 201 can evaluate the RSRP-based stationary or low-mobility standard for S... searchDeltaP-Stationary and T searchDeltaP-Stationary Apply (multiple) offsets. Alternatively or concurrently, UE 201 can apply S offsets to non-cell edge standards. SearchThresholdP2 and S SearchThresholdQ2 Apply (multiple) offsets.

[0134] In some embodiments, UE 201 may perform a relaxed measurement assessment using at least one criterion for stationary state assessment included in the supplementary configuration. In some embodiments, the at least one criterion for stationary state assessment may be a distance-change-based criterion indicating a threshold for the distance change from the UE to a previous UE reference location, and UE 201 may determine whether the distance change from UE 201 to the previous UE reference location is less than or not greater than a first threshold at any point or over a certain period of time. If so, UE 201 may determine that the distance-change-based criterion is met.

[0135] In some embodiments, the distance-based change criterion may indicate a threshold for the distance change from the UE to the serving cell reference location. UE 201 may determine whether the distance change from the UE to the serving cell reference location is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 may determine that the distance-based change criterion is met.

[0136] In some embodiments, the distance change-based criterion may indicate a threshold representing the distance change from UE 201 to the serving cell reference location minus the expected distance change due to movement of the access node (e.g., a satellite) or base station 202. UE 201 may determine whether the distance change from UE 201 to the serving cell reference location minus the expected distance change due to movement of the access node or base station 202 is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 may determine that the distance change-based criterion is met.

[0137] In some embodiments, the distance-based criterion can indicate a threshold for the rate of change of distance from the UE to the serving cell reference location. UE 201 can determine whether the rate of change of distance from the UE to the serving cell reference location is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 can determine that the distance-based criterion is met.

[0138] In some embodiments, at least one criterion for static state assessment includes a terrestrial network (TN) area-based criterion. The TN area-based criterion may indicate a threshold for the distance change from the UE to at least one TN area reference location. UE 201 may determine whether the distance change from UE 201 to at least one TN area reference location is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 may determine that the TN area-based criterion is met.

[0139] Alternatively or concurrently, the TN area-based standard may indicate a threshold for the satisfaction status of a distance-based standard for at least one TN area. UE 201 may determine whether a change in distance from UE 201 to at least one TN area reference location is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 may determine that the TN area-based standard is satisfied.

[0140] In some embodiments, at least one criterion for static state assessment includes a criterion based on propagation delay variation or a criterion based on TA delay variation. This criterion may indicate a threshold between the propagation delay or TA variation between UE 201 and the base station minus the expected propagation delay or TA variation due to movement of the access node (e.g., a satellite) or base station 202. UE 201 may determine whether the propagation delay or TA variation between UE 201 and base station 202 minus the expected propagation delay or TA variation due to movement of the access node or base station is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 may determine that the criterion is met.

[0141] Alternatively, a criterion based on propagation delay variation or a criterion based on TA delay variation can indicate a threshold for the propagation delay or TA change rate between the UE and the base station. UE 201 can determine whether the propagation delay or TA change rate between the UE and the base station is less than or not greater than the threshold at any point or within a certain duration. If so, UE 201 can determine that the criterion is met.

[0142] In some embodiments, at least one criterion for static state assessment includes a criterion based on elevation angle change. This criterion may indicate a threshold between the elevation angle change between UE 201 and an access node (e.g., a satellite) or base station, minus the expected elevation angle change due to movement of the access node or base station. UE 201 may determine whether the elevation angle change minus the expected elevation angle change is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 may determine that the criterion is met.

[0143] Alternatively, a criterion based on elevation angle variation can indicate a threshold rate of change in elevation angle between the UE and the access node or base station. UE 201 can determine whether the rate of change in elevation angle is less than or not greater than the threshold at any point or over a certain period of time. If so, UE 201 can determine that the criterion is met.

[0144] In some embodiments, UE 201 may utilize at least one reference RSRP update rule in the supplementary configuration to perform a relaxed measurement assessment. As described above, the RSRP update rule may include the duration of a protection timer. After the protection timer is started when the reference RSRP is updated, UE 201 may block the update of the reference RSRP for that duration. Alternatively, the RSRP update rule may include a duration for updating the reference RSRP. UE 201 may update the reference RSRP only if the current RSRP is greater than the reference RSRP during the second duration. Alternatively, the RSRP update rule may include an indication to ignore the update of the reference RSRP. UE 201 may ignore the update of the reference RSRP upon receiving this indication. Alternatively, the RSRP update rule may include an update threshold for the reference RSRP. UE 201 may update the reference RSRP only if the difference between the current RSRP and the reference RSRP is equal to or greater than the update threshold.

[0145] In some embodiments, supplementary configuration may include at least one offset of the RSRP-based stationary or low-mobility standard for lenient measurement. UE 201 may perform a stationary state assessment based on the RSRP-based stationary or low-mobility standard having at least one offset. In some embodiments, the at least one offset may include an offset to a threshold for evaluating RSRP changes of the RSRP-based stationary or low-mobility standard. Additionally or alternatively, the at least one offset may include an offset to the time period during which RSRP changes of the leniently measured stationary or low-mobility standard are evaluated.

[0146] In some embodiments, the supplementary configuration may include at least one criterion for non-cell edge state assessment. UE 201 may perform a relaxed measurement assessment based at least on at least one criterion for non-cell edge state assessment in the supplementary configuration.

[0147] The criteria used for non-cell edge state assessment may include a distance-varying criterion indicating a threshold for the distance from UE 201 to the serving cell reference location. UE 201 can determine whether the distance from UE 201 to the serving cell reference location is less than or not greater than the threshold at any point or within a certain period of time. If so, UE 201 can determine that the distance-varying criterion is met.

[0148] Alternatively or concurrently, the criteria used for non-cell edge state assessment may include a propagation delay-based or TA-based criterion indicating a threshold for the propagation delay or TA between UE 201 and base station 202. UE 201 may determine whether the propagation delay or TA between UE 201 and base station 202 is less than or not greater than the threshold at any point or for a certain period of time. If so, UE 201 may determine that the propagation delay-based or TA-based criterion is met.

[0149] Alternatively, the criteria used for non-cell edge state assessment may include an elevation angle-based criterion indicating a threshold for the elevation angle between UE 201 and the access node or base station 202. UE 201 can determine whether the elevation angle between UE 201 and the access node or base station 202 is less than or not greater than the threshold at any point or for a certain period of time. If so, UE 201 can determine that the elevation angle-based criterion is met.

[0150] According to embodiments of this disclosure, for issue #1, the logic of the UE for applying idle / inactive relaxed measurement evaluation in NTN cells has been modified, taking into account NTN-specific triggers for neighboring cell measurements. In some embodiments, depending on the reason for the need for neighboring cell measurements, the UE may or may not perform the relaxed measurement evaluation (i.e., on the static standard or the non-cell edge standard) when the relaxed measurement standard is broadcast, for example, in SIB2.

[0151] In an NTN cell, if neighboring cell measurements are required due to the satisfaction of a time-based standard (NTN-specific trigger), the UE ignores the lenient measurement standard broadcast in SIB2, or disables / withdraws / suspends the evaluation of any lenient measurement standard. In an NTN cell, if neighboring cell measurements are required due to the satisfaction of a distance-based standard (NTN-specific trigger), the UE may ignore the lenient measurement standard broadcast in SIB2, or disable / withdraw / suspend the evaluation of any lenient measurement standard; for example, only ignoring Earth-moving cells, or assuming that non-cell edge standards are not met.

[0152] In an NTN cell, if neighboring cell measurements (common triggering) are required due to the satisfaction of signal strength-based criteria, the UE can continue to evaluate the lenient measurement criteria broadcast in SIB2. S can optionally be applied. SearchDeltaP-Stationary T SearchDeltaP-Stationary S SearchThresholdP2 or S SearchThresholdQ2 The offset.

[0153] For Question #2, the UE stationary state assessment criteria for lenient measurements in idle / inactive states have been enhanced. In some embodiments, additional stationary or low-mobility criteria can be applied independently or in combination with legacy criteria. These additional stationary criteria may include criteria based on distance variation, terrestrial network (TN) based criteria, criteria based on propagation delay variation or TA variation, and criteria based on elevation angle variation. Each criterion can be independent of or in combination with legacy criteria. In some embodiments, the logic of the legacy stationary criteria can be modified, for example, by applying update rules or offsets.

[0154] Figure 3A The illustration shows an example of a distance-change-based standard used for assessing stationary or low-mobility conditions. Figure 3B In this context, for both quasi-fixed and geomobile cells, the distance-based criterion can include the distance change from the UE to the previous UE reference location. Alternatively, the distance-based criterion can also include the distance change from the UE to the serving cell reference location, for example, for quasi-fixed cells.

[0155] Figure 3B This illustration shows another example of a distance-change-based criterion used for assessing stationary or low-mobility conditions. Figure 3CIn this context, the distance-change-based criterion may include the distance change from the UE to the serving cell reference location minus the expected distance change due to satellite movement, for example, for a geostationary cell. In some embodiments, for both quasi-geostationary and geostationary cells, the distance-change-based criterion may include the rate of change of distance from the UE to the serving cell reference location.

[0156] Figure 3C The illustration shows an example of a TN-based standard used for assessments of stationary or low-mobility conditions. Figure 3D In this context, TN-based standards may include distance variations from the UE to at least one TN area reference location (if provided by the network). Alternatively or additionally, TN-based standards may include the satisfaction status of distance-based standards for at least one TN area with respect to TN frequency measurements.

[0157] Figure 3D The illustration shows examples of standards based on propagation delay variation or TA variation used for assessment of stationary or low-mobility conditions. Figure 3E In this context, for both quasi-fixed and mobile cells, the standard based on propagation delay variation or TA variation may include the propagation delay or TA variation between the UE and the satellite or eNB / gNB minus the expected propagation delay or TA variation due to satellite movement. Alternatively, for both quasi-fixed and mobile cells, the standard may include the propagation delay or TA variation rate between the UE and the satellite or eNB / gNB.

[0158] Figure 3E The illustration shows an example of a standard based on changes in elevation angle. distanceThreshCellEdge In this context, for both quasi-fixed and geomobile cells, the standard based on elevation angle change can include the elevation angle change between the UE and the satellite minus the expected elevation angle change due to satellite movement. Alternatively, for both quasi-fixed and geomobile cells, this standard can include the elevation angle change rate between the UE and the satellite.

[0159] In some embodiments, Srxlev can be modified RefStationary The update logic. For example, the UE can be updated in Srxlev. RefStationary An update starts a protection timer to prevent further updates while the timer is running. Alternatively, when T... RefStationaryUpdate Satisfying (Srxlev-Srxlev) RefStationary When )>0, the UE can update Srxlev RefStationary Alternatively or alternatively, when (Srxlev - Srxlev) RefStationary When )>0 is satisfied, the UE can ignore Srxlev RefStationaryUpdate. Alternatively or concurrently, when |Srxlev-Srxlev RefStationary |>Srxlev RefStationaryUpdate When satisfied, the UE can update Srxlev. RefStationary .

[0160] In some embodiments, S can be applied SearchDeltaP-Stationary and / or T SearchDeltaP-Stationary Multiple offsets. Multiple offsets can be applied to any NTN cell, NTN GEO cell, NTN LEO quasi-fixed cell, or NTN LEO earth-moving cell. Multiple offsets can be associated with the distance or distance change from the UE to a point (serving cell reference point, previous UE location, or TN area reference location). Additionally or alternatively, multiple offsets can be associated with the propagation delay or TA or propagation delay or TA change between the UE and the satellite or eNB / gNB. Additionally or alternatively, multiple offsets can be associated with the elevation angle or elevation angle change between the UE and the satellite.

[0161] In some embodiments, for question #3, multiple criteria may be introduced for non-cell edge state assessment of lenient measurements of the UE in idle / inactive states. In some embodiments, the criteria for non-cell edge state assessment may include distance-based criteria. Distance-based criteria may include the distance from the UE to a cell reference location. A distance threshold may be reused in a distance-based trigger for neighboring cell measurements, or it may be defined separately. t-Service .

[0162] Alternatively, the criteria used for non-cell edge state assessment may include a propagation delay-based or TA-based criterion, which includes the propagation delay or TA between the UE and the satellite or eNB / gNB. Alternatively, the criteria used for non-cell edge state assessment may include an elevation angle-based criterion, which includes the elevation angle between the UE and the satellite.

[0163] In some embodiments concerning scenario #1-1, for a UE served by an NTN cell, due to the satisfaction of time-based criteria, such as including the nearing of the cell cessation time of the quasi-earth fixed NTN cell ( t-FLswitch ) or its feeder link switching time ( FLswitch ), or the Earth Mobile NTN cell is nearing its feeder link switching time ( t- stationaryMobilityEvaluation (This can occur if the coverage area moves away from the UE location due to satellite movement, thus neighboring cell measurements can be triggered at the UE.)

[0164] If the serving NTN cell broadcast is in a static state assessment stationaryMobilityEvaluationWith this configuration (i.e., relaxed measurement evaluation is enabled), the UE can ignore the static state evaluation. stationaryMobilityEvaluation The configuration (that is, the configuration of) cellEdgeEvaluationWhileStationary (Assumed not to exist). Alternatively or alternatively, the UE may disable / exit / pause the static state assessment used for lenient measurements. Alternatively or alternatively, the UE may assume that the static criteria used for lenient measurements are not met.

[0165] If the service NTN cell broadcast is not a cell edge state assessment cellEdgeEvaluationWhileStationary ry With this configuration, the UE can ignore non-cell edge state assessment. cellEdgeEvaluationWhileStationary The configuration (i.e., the configuration of) stationaryMobilityEvaluation (Assumed not to exist). Alternatively, the UE may disable / exit / pause non-cell edge state assessment for lenient measurements. Alternatively, the UE may assume that the non-cell edge criteria for lenient measurements are not met.

[0166] Examples of possible specification implementations in 3GPP TS38.304 (highlighted in bold):

[0167] In some embodiments of scenarios #1-2 and #1-3, for a UE served by an NTN cell, neighbor cell measurements are triggered at the UE due to the satisfaction of distance-based criteria, for example, when the coverage of an NTN cell that includes Earth movement moves away from the UE's location due to satellite movement, or when the UE moves away from the NTN cell's coverage area.

[0168] Service NTN Cell Broadcast Static State Assessment ​ The configuration (i.e., relaxed measurement assessment is enabled) allows the UE to ignore stationary state assessment if the serving NTN cell is a ground-mobile cell. stationaryMobilityEvaluation The configuration (i.e., the configuration of) stationaryMobilityEvaluation (Assumed not to exist). Alternatively or alternatively, the UE may disable / exit / pause the static state assessment for relaxed measurements. Alternatively or alternatively, the UE may assume that the static criteria for relaxed measurements are not met. Otherwise, the UE may choose to continue the static state assessment for relaxed measurements.

[0169] If the service NTN cell broadcast is not a cell edge state assessment cellEdgeEvaluationWhileStationa ry With this configuration, the UE can ignore non-cell edge state assessment. cellEdgeEvaluationWhileStationary The configuration (i.e., the configuration of) cellEdgeEvaluationWhileStationary(Assumed not to exist). Alternatively, the UE may disable / exit / pause non-cell edge state assessment for lenient measurements. Alternatively, the UE may assume that the non-cell edge criteria for lenient measurements are not met.

[0170] Examples of possible specification implementations in 3GPP TS38.304 (highlighted in bold):

[0171] In some embodiments concerning scenarios #1-4, for a UE served by an NTN cell, neighbor cell measurements are triggered at the UE due to the satisfaction of RSRP / RSRQ-based standards. If the serving NTN cell broadcasts a static state assessment... stationaryMobilityEvaluation If configured (i.e., lenient measurement evaluation is enabled), the UE can choose to continue with lenient measurement static state evaluation. Alternatively, the UE can also adjust the S... SearchDeltaP-Stationary or T SearchDeltaP-Stationary Apply offset. Offset can be associated with at least one of the following: distance or distance change from UE to point, propagation delay or TA between UE and satellite or eNB / gNB, or elevation angle or elevation change between UE and satellite.

[0172] If the service NTN cell broadcast is not a cell edge state assessment cellEdgeEvaluationWhileStationa ry If configured accordingly, the UE can choose to continue. This is for non-cell edge state assessment used for lenient measurements. Alternatively, the UE can, during the non-cell edge state assessment for lenient measurements, perform S... SearchThresholdP2 or S SearchThresholdQ2 Apply offset. Offset can be associated with at least one of the following: distance or distance change from UE to point, propagation delay or TA between UE and satellite or eNB / gNB, or elevation angle or elevation change between UE and satellite.

[0173] In some embodiments of scenario #2-1, a supplementary configuration for NTN cell broadcast static state assessment includes at least one standard that can be compared with a standard based on RSRP changes. stationaryMobilityEvaluation It can be configured together or separately. At least one standard may include one or more of the following: a standard based on distance variation, a standard based on TN area, a standard based on propagation delay variation, a standard based on TA variation, or a standard based on elevation angle variation.

[0174] In some embodiments, the distance-change-based criteria may include one or more of the following: at least one threshold for the distance change from the UE to a previous UE reference location, at least one threshold for the distance change from the UE to a serving cell reference location, and at least one threshold for the distance change from the UE to the serving cell reference location minus the expected distance change due to satellite movement; and at least one threshold for the distance change rate from the UE to the serving cell reference location. In some embodiments, the TN area-based criteria may include one or more of the following: at least one threshold for the distance change from the UE to at least one TN area reference location, and at least one threshold for the satisfaction status of the distance-based criteria for at least one TN area.

[0175] In some embodiments, the criteria based on propagation delay variation or TA variation may include one or more of the following: at least one threshold of the propagation delay or TA variation between the UE and the satellite or eNB / gNB minus the expected propagation delay or TA variation due to satellite movement, and at least one threshold of the propagation delay or TA variation rate between the UE and the satellite or eNB / gNB. In some embodiments, the criteria based on elevation angle variation may include one or more of the following: the elevation angle variation between the UE and the satellite minus at least one threshold of the expected elevation angle variation due to satellite movement, and at least one threshold of the elevation angle variation rate between the UE and the satellite.

[0176] The UE can perform a stationary state assessment based on at least one of the above-described criteria in the configuration. In some embodiments, the UE may consider the distance change-based criterion satisfied when the distance change from the UE to the previous UE reference location is less than or not greater than at least a threshold (if configured) for a given period of time, either once or after a certain duration. In some embodiments, the UE may consider the distance change-based criterion satisfied when the distance change from the UE to the serving cell reference location is less than or not greater than at least a threshold (if configured) for a given period of time, either once or after a certain duration. In some embodiments, the UE may consider the distance change-based criterion satisfied when the distance change from the UE to the serving cell reference location minus the expected distance change due to satellite movement is less than or not greater than at least a threshold (if configured) for a given period of time, either once or after a certain duration. In some embodiments, a UE may consider that a distance-based standard is met when the rate of change of distance from the UE to the serving cell reference location is less than or not greater than at least a threshold (if configured) for a certain period of time, or when the rate of change of distance from the UE to the serving cell reference location is at least once or for a certain period of time.

[0177] In some embodiments, the UE may consider the TN-based standard to be satisfied when the distance change from the UE to at least one TN area reference location is less than or not greater than at least one threshold (if configured) of the distance change from the UE to at least one TN area reference location once or for a certain period of time. In some embodiments, the UE may consider the TN-based standard to be satisfied when the distance change from the UE to at least one TN area reference location is less than or not greater than at least one threshold (if configured) of the satisfaction status of the distance-based standard of at least one TN area.

[0178] In some embodiments, the UE may consider the propagation delay change or TA change criterion satisfied when the propagation delay or TA change between the UE and the satellite or eNB / gNB minus the expected propagation delay or TA change due to satellite movement is less than or not greater than at least a threshold (if configured) of the propagation delay or TA change between the UE and the satellite or eNB / gNB minus the expected propagation delay or TA change due to satellite movement, either once or over a certain period. In some embodiments, the UE may consider the propagation delay change or TA change criterion satisfied when the propagation delay or TA change rate between the UE and the satellite or eNB / gNB is less than or not greater than at least a threshold (if configured) of the propagation delay or TA change rate between the UE and the satellite or eNB / gNB.

[0179] In some embodiments, the UE may consider the elevation change-based standard satisfied when the elevation change between the UE and the satellite minus the expected elevation change due to satellite movement is less than or not greater than at least a threshold (if configured) for a certain period of time, either once or within a certain duration. In some embodiments, the UE may consider the elevation change-based standard satisfied when the rate of elevation change between the UE and the satellite is less than or not greater than at least a threshold (if configured) for a certain period of time.

[0180] Examples of possible specification implementations in 3GPP TS38.304 (highlighted in bold):

[0181] In some embodiments concerning scenario #2-2, NTN cell broadcasts assess the stationary state. stationaryMobilityEvaluation Supplementary configurations for the configuration. Supplementary configurations may include at least one of the following: the duration of the protection timer, due to (Srxlev-Srxlev) RefStationaryUpdate Srxlev > 0 RefStationary Duration T RefStationaryUpdate Because (Srxlev-Srxlev) RefStationary Srxlev > 0 and therefore ignore RefStationary Updated instructions, and instructions for Srxlev RefStationary Update threshold Srxlev RefStationaryUpdate .

[0182] The UE performs a static state assessment based on supplementary configuration. In some embodiments, the UE may utilize the duration (if configured) in Srxlev RefStationary During an update, a protection timer is started, where Srxlev... RefStationary It will not update. In some embodiments, when (Srxlev-Srxlev) RefStationary )>0 in T RefStationaryUpdate When the (if configured) condition is met, the UE can update Srxlev. RefStationary In some embodiments, when (Srxlev - Srxlev) RefStationary When )>0 is satisfied, the UE can ignore Srxlev RefStationary Update. In some embodiments, when |Srxlev-Srxlev RefStationary |>Srxlev RefStationaryUpdate When (if configured) conditions are met, the UE can update Srxlev. RefStationary .

[0183] In some embodiments concerning scenario #2-2, NTN cell broadcasts assess the stationary state. stationaryMobilityEvaluation Supplementary configuration to the configuration. Supplementary configuration may include at least one of the following: to S SearchDeltaP-Stationary offset and to T SearchDeltaP-Stationary The offset. Both offsets can be associated with at least one of the following: distance from the UE to the point or a change in distance; propagation delay or TA between the UE and the satellite or eNB / gNB or a change in propagation delay or TA; or elevation angle or a change in elevation angle between the UE and the satellite. The offsets (multiple) can be broadcast by the network or determined by the UE. For example, if distance = 100m, then offset = 2dB is applied.

[0184] In some embodiments of scenarios #3-1 and #3-2, the NTN cell broadcasts a supplementary configuration for non-cell edge state assessment, which includes at least one standard that can be used with RSRP / RSRQ-based standards. cellEdgeEva luationWhileStationaryIt can be configured together or not. At least one criterion may include at least one of the following: a distance-based criterion, which may include at least one threshold of the distance from the UE to the serving cell reference location; a propagation delay-based or TA-based criterion, which may include at least one threshold of the propagation delay or TA between the UE and the satellite or eNB / gNB; and an elevation angle-based criterion, which may include at least one threshold of the elevation angle between the UE and the satellite.

[0185] The UE can perform non-cell edge state assessment based on at least one of the above-described criteria in the configuration. In some embodiments, the UE may consider the distance-based criterion satisfied when the distance from the UE to the serving cell reference location is less than or not greater than at least one threshold (if configured) for a given period of time, either once or twice. In some embodiments, the UE may consider the propagation delay-based or TA-based criterion satisfied when the propagation delay or TA between the UE and the satellite or eNB / gNB is less than or not greater than at least one threshold (if configured) for a given period of time, either once or twice. In some embodiments, the UE may consider the elevation angle-based criterion satisfied when the elevation angle between the UE and the satellite is less than or not greater than at least one threshold (if configured) for a given period of time, either once or twice.

[0186] Figure 4 Another example of a processing flow according to some exemplary embodiments of this disclosure is illustrated. Processing flow 400 may involve user equipment (UE) 201 and base station 202. Reference Figure 1 The processing procedure 200 can be applied to the wireless communication system 100. For example, UE 201 can be UE 104, and base station 202 can be network entity 102. It should be understood that the processing procedure 200 can be applied to other communication scenarios, which will not be described in detail here.

[0187] On the UE side, UE 201 receives from the base station a first configuration for relaxed measurement evaluation and a second configuration associated with neighboring cell measurements in the NTN. UE 201 performs relaxed measurement evaluation based on the first and second configurations.

[0188] exist Figure 4 In the middle, at position 402, the first configuration includes a static state standard based on RSRP changes. stationaryMobilityEvaluation and optional non-cell edge state standards based on RSRP / RSRQ cellEdg eEvaluationWhileStationaryThe second configuration associated with neighboring cell measurements in the NTN includes at least one of the following: an indication triggered by time-based neighboring cell measurements; an indication triggered by distance-based neighboring cell measurements; and a supplementary configuration for lenient measurement assessment.

[0189] At 404, the indication for time-based neighbor cell measurement triggering in the second configuration includes at least the indication for neighbor cell measurement triggering in the NTN. t-Service and t-FLswitch One of the options, and the indication for distance-based neighbor cell measurement triggering in the second configuration includes at least the neighbor cell measurement triggering for the NTN. referenceLocation and distanceThresh One of them.

[0190] If the second configuration includes an indication for time-based neighbor cell measurement triggering, then at 410, when neighbor cell measurement is triggered by a time-based standard at 408, UE 201 can choose to ignore / disable stationary and / or non-cell edge state assessments for lenient measurements. If the second configuration includes an indication for distance-based neighbor cell measurement triggering, then at 410, when neighbor cell measurement is triggered by a distance-based standard at 408, UE 210 can choose to ignore / disable stationary and / or non-cell edge state assessments for lenient measurements. At 410, when neighbor cell measurement is triggered by an RSRP / RSQ-based standard at 408, UE 201 can choose to continue stationary and / or non-cell edge state assessments for lenient measurements, and an offset is applied.

[0191] At 406, if the supplementary configuration for relaxed measurement assessment in the second configuration includes a new standard for static state assessment, then at 412, the UE performs static state assessment based on the new standard. If the supplementary configuration for relaxed measurement assessment in the second configuration includes reference RSRP update rules, then at 412, the UE performs static state assessment using additional reference RSRP update rules. If the supplementary configuration for relaxed measurement assessment in the second configuration includes a static state standard based on RSRP changes... stationaryMobilityEvaluation The offset is then applied at 412, where UE 201 performs a stationary state assessment, where the offset is applied to the stationary state criterion based on RSRP changes. stationaryMobilityEvaluation If the supplementary configuration for lenient measurement assessment in the second configuration includes a new standard for non-cell edge state assessment, then at 414, UE 201 performs non-cell edge state assessment based on the new standard.

[0192] On the base station side, base station 202 determines a first configuration for relaxed measurement evaluation and a second configuration associated with neighboring cell measurements in the NTN. Base station 202 sends the first and second configurations to UE 201. At 402, the first configuration includes a static state criterion based on RSRP changes. stationaryMobilityEvaluation and optional non-cell edge state standards based on RSRP / RSRQ cellEdgeEvaluationWhileStationary The second configuration associated with neighboring cell measurements in the NTN includes at least one of the following: an indication triggered by time-based neighboring cell measurements; an indication triggered by distance-based neighboring cell measurements; and a supplementary configuration for lenient measurement assessment.

[0193] At 404, the indication triggered by time-based neighboring cell measurements in the second configuration includes at least t-Service and t-FLswitch One of the following, and the indication triggered by distance-based neighboring cell measurements in the second setting includes at least one of the following: referenceLocation and distanceThresh One of them.

[0194] At 406, the supplementary configuration for relaxed measurement evaluation in the second configuration may include a new standard for static state evaluation. Alternatively, the supplementary configuration for relaxed measurement evaluation in the second configuration may include reference to RSRP update rules. Alternatively, the supplementary configuration for relaxed measurement evaluation in the second configuration may include a static state standard based on RSRP changes. stationaryMobilityEvaluation The offset. Alternatively, the supplementary configuration in the second configuration for relaxed measurement evaluation includes a new standard for non-cell edge state evaluation.

[0195] According to the reference Figures 2 to 4 In some embodiments discussed, a first configuration for relaxed measurements and a second configuration for neighboring cell measurements are provided to the UE from the base station. The second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configuration for relaxed measurement evaluation. The UE can perform relaxed measurement evaluation based on the first and second configurations. Therefore, the UE can avoid unnecessary evaluations and can ensure accurate evaluation of relaxed measurements taking network characteristics into account.

[0196] Figure 5Examples of devices suitable for implementing some embodiments of this disclosure are illustrated. Device 500 may be an example of UE 104 as described herein. Device 500 may support wireless communication with one or more network entities 102, UE 104, or any combination thereof. Device 500 may include components for bidirectional communication, including components for transmitting and receiving communications (such as processor 502, memory 504, transceiver 506, and optional I / O controller 508). These components may communicate electronically or be otherwise coupled (e.g., operative ground, communication ground, functional ground, electronic ground, electrical ground) via one or more interfaces (e.g., buses).

[0197] Processor 502, memory 504, transceiver 506, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of the present disclosure described herein. For example, processor 502, memory 504, transceiver 506, or various combinations thereof, or components thereof, may support methods for performing one or more of the operations described herein.

[0198] In some implementations, processor 502, memory 504, transceiver 506, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). The hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to or otherwise supporting components for performing the functions described in this disclosure. In some implementations, processor 502 and memory 504 coupled to processor 502 may be configured to perform one or more functions described herein (e.g., by executing instructions stored in memory 504 by processor 502).

[0199] For example, according to the examples disclosed herein, processor 502 may support wireless communication at device 500. Processor 502 may be configured to operate to support: components for receiving from a base station a first configuration for a relaxed measurement assessment and a second configuration for neighboring cell measurements, wherein the second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configuration for the relaxed measurement assessment; and components for performing a relaxed measurement assessment based on the first and second configurations.

[0200] Processor 502 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some implementations, processor 502 may be configured to use a memory controller to operate a memory array. In some other implementations, the memory controller may be integrated into processor 502. Processor 502 may be configured to execute computer-readable instructions stored in memory (e.g., memory 504) to cause device 500 to perform various functions of this disclosure.

[0201] Memory 504 may include random access memory (RAM) and read-only memory (ROM). Memory 504 may store computer-readable, computer-executable code, including instructions that, when executed by processor 502, cause device 500 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executed by processor 502, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some implementations, memory 504 may include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0202] I / O controller 508 can manage the input and output signals of device 500. I / O controller 508 can also manage peripheral devices not integrated into device 500. In some implementations, I / O controller 508 can represent a physical connection or port to an external peripheral device. In some implementations, I / O controller 508 can utilize an operating system such as iOS®, Android®, MS Windows®, OS / 2®, UNIX®, Linux®, or other known operating systems. In some implementations, I / O controller 508 can be implemented as part of a processor, such as processor 502. In some implementations, a user can interact with device 500 via I / O controller 508 or via hardware components controlled by I / O controller 508.

[0203] In some implementations, device 500 may include a single antenna 510. However, in other implementations, device 500 may have more than one antenna 510 (i.e., multiple antennas), including multiple antenna panels or antenna arrays capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 506 may communicate bidirectionally via one or more antennas 510, wired or wireless links, as described herein. For example, transceiver 506 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 506 may also include a modem for modulating packets, providing modulated packets to one or more antennas 510 for transmission, and demodulating packets received from one or more antennas 510. Transceiver 506 may include one or more transmit chains, one or more receive chains, or combinations thereof.

[0204] The transmission chain can be configured to generate and transmit signals (e.g., control information, data, packets). The transmission chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. At least one modulator may be configured to support one or more techniques, such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes such as phase shift keying (PSK) or quadrature amplitude modulation (QAM). The transmission chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over a wireless medium. The transmission chain may also include one or more antennas 510 for transmitting the amplified signal into the air or wireless medium.

[0205] The receiver chain can be configured to receive signals (e.g., control information, data, packets) via a wireless medium. For example, the receiver chain may include one or more antennas 510 for receiving signals over the air or via a wireless medium. The receiver chain may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The receiver chain may include at least one demodulator configured to demodulate the received signal and acquire transmitted data by reversing the modulation technique applied during signal transmission. The receiver chain may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0206] Figure 6An example of a processor 600 suitable for implementing some embodiments of the present disclosure is illustrated. Processor 600 may be an example of a processor configured to perform various operations according to the examples described herein. Processor 600 may include a controller 602 configured to perform various operations according to the examples described herein. Processor 600 may optionally include at least one memory 604. Additionally or alternatively, processor 600 may optionally include one or more arithmetic logic units (ALUs) 606. One or more of these components may be electronically communicated or otherwise coupled (e.g., operative ground, communicative ground, functional ground, electronic ground, electrical ground) via one or more interfaces (e.g., buses).

[0207] Processor 600 may be a processor chipset and includes a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receive, acquire, retrieve, send, output, forward, store, determine, identify, access, write, read) according to the examples described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to the processor chipset or included in the processor chipset (e.g., processor 600)) or other memory (e.g., random access memory (RAM), read-only memory (ROM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), static RAM (SRAM), ferroelectric RAM (FeRAM), magnetic RAM (MRAM), resistive RAM (RRAM), flash memory, phase-change memory (PCM), etc.).

[0208] Controller 602 can be configured to manage and coordinate various operations of processor 600 (e.g., signaling, receiving, acquiring, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, and reading) to enable processor 600 to support various operations of the UE according to the examples described herein. For example, controller 602 can operate as a control unit of processor 600 to generate control signals for managing the operation of various components of processor 600. These control signals include enabling or disabling functional units, selecting data paths, initiating memory accesses, and coordinating operation timing.

[0209] Controller 602 may be configured to fetch (e.g., fetch, retrieve, receive) instructions from memory 604 and determine subsequent instructions(s) to be executed, enabling processor 600 to support various operations according to the examples described herein. Controller 602 may be configured to track the memory addresses of instructions associated with memory 604. Controller 602 may be configured to decode instructions to determine the operations to be performed and the operands involved. For example, controller 602 may be configured to interpret instructions and determine control signals to be output to other components of processor 600, enabling processor 600 to support various operations according to the examples described herein. Additionally or alternatively, controller 602 may be configured to manage data flow within processor 600. Controller 602 may be configured to control data transfers between registers, arithmetic logic unit (ALU), and other functional units of processor 600.

[0210] Memory 604 may include one or more caches (e.g., memory or other memory, such as RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc., local to or included in processor 600). In some implementations, memory 604 may reside within or on the processor chipset (e.g., local to processor 600). In some other implementations, memory 604 may reside outside the processor chipset (e.g., remote from processor 600).

[0211] Memory 604 may store computer-readable, computer-executable code, including instructions that, when executed by processor 600, cause processor 600 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. Controller 602 and / or processor 600 may be configured to execute computer-readable instructions stored in memory 604 to cause processor 600 to perform various functions (e.g., functions or tasks supporting transmit power priority). For example, processor 600 and / or controller 602 may be coupled to or coupled to memory 604, and processor 600, controller 602, and memory 604 may be configured to perform the various functions described herein. In some examples, processor 600 may include multiple processors, and memory 604 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein.

[0212] One or more ALU 606s can be configured to support a variety of operations as described in the examples herein. In some implementations, one or more ALU 606s may reside within or on a processor chipset (e.g., processor 600). In some other implementations, one or more ALU 606s may reside outside the processor chipset (e.g., processor 600). One or more ALU 606s can perform one or more calculations on data, such as addition, subtraction, multiplication, and division. For example, one or more ALU 606s can receive input operands and an opcode that determines the operation to be performed. One or more ALU 606s are configured with a variety of logic and arithmetic circuitry, including adders, subtractors, shifters, and logic gates, to process and manipulate data according to the operation. Alternatively or additionally, one or more ALU 606s may support logical operations such as AND, OR, XOR, NOR, and NAND, enabling one or more ALU 606s to handle conditional operations, comparisons, and bitwise operations.

[0213] According to the examples disclosed herein, processor 600 may support wireless communication. Processor 600 may be configured to operate to support: components for receiving from a base station a first configuration for a relaxed measurement assessment and a second configuration for neighboring cell measurements, wherein the second configuration includes an indication associated with a neighboring cell measurement trigger or supplementary configuration for the relaxed measurement assessment; and components for performing a relaxed measurement assessment based on the first and second configurations. Processor 602 may be configured to operate to support: components for determining the first configuration for a relaxed measurement assessment and the second configuration for neighboring cell measurements, wherein the second configuration includes an indication associated with a neighboring cell measurement trigger or supplementary configuration for the relaxed measurement assessment; and components for transmitting the first and second configurations to the UE.

[0214] Figure 7 Another example of a device suitable for implementing some embodiments of this disclosure is illustrated. Device 700 may be an example of network entity 102 as described herein. Device 700 may support wireless communication with one or more network entities 102, UE 104, or any combination thereof. Device 700 may include components for bidirectional communication, including components for transmitting and receiving communications (such as processor 702, memory 704, transceiver 706, and optional I / O controller 708). These components may communicate electronically or be otherwise coupled (e.g., operative ground, communication ground, functional ground, electronic ground, electrical ground) via one or more interfaces (e.g., bus).

[0215] Processor 702, memory 704, transceiver 706, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of the present disclosure described herein. For example, processor 702, memory 704, transceiver 706, or various combinations thereof, or components thereof, may support methods for performing one or more of the operations described herein.

[0216] In some implementations, processor 702, memory 704, transceiver 706, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). The hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to or otherwise supporting components for performing the functions described in this disclosure. In some implementations, processor 702 and memory 704 coupled to processor 702 may be configured to perform one or more functions described herein (e.g., by executing instructions stored in memory 704 by processor 702).

[0217] For example, according to the examples disclosed herein, processor 702 may support wireless communication at device 700. Processor 702 may be configured to operate to support: components for determining a first configuration for lenient measurement assessment and a second configuration for neighboring cell measurement, wherein the second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configuration for lenient measurement assessment; and components for transmitting the first and second configurations to the UE.

[0218] Processor 702 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some implementations, processor 702 may be configured to use a memory controller to operate a memory array. In some other implementations, the memory controller may be integrated into processor 702. Processor 702 may be configured to execute computer-readable instructions stored in memory (e.g., memory 704) to cause device 700 to perform various functions of this disclosure.

[0219] Memory 704 may include random access memory (RAM) and read-only memory (ROM). Memory 704 may store computer-readable, computer-executable code, including instructions that, when executed by processor 702, cause device 700 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some implementations, the code may not be directly executed by processor 702, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some implementations, memory 704 may include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0220] I / O controller 708 can manage the input and output signals of device 700. I / O controller 708 can also manage peripheral devices not integrated into device 700. In some implementations, I / O controller 708 can represent a physical connection or port to an external peripheral device. In some implementations, I / O controller 708 can utilize an operating system such as iOS®, Android®, MS Windows®, OS / 2®, UNIX®, Linux®, or other known operating systems. In some implementations, I / O controller 708 can be implemented as part of a processor, such as processor 702. In some implementations, a user can interact with device 700 via I / O controller 708 or via hardware components controlled by I / O controller 708.

[0221] In some implementations, device 700 may include a single antenna 710. However, in other implementations, device 700 may have more than one antenna 710 (i.e., multiple antennas), including multiple antenna panels or antenna arrays capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 706 may communicate bidirectionally via one or more antennas 710, wired or wireless links, as described herein. For example, transceiver 706 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 706 may also include a modem for modulating packets, providing modulated packets to one or more antennas 710 for transmission, and demodulating packets received from one or more antennas 710. Transceiver 706 may include one or more transmit chains, one or more receive chains, or combinations thereof.

[0222] The transmission chain can be configured to generate and transmit signals (e.g., control information, data, packets). The transmission chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. At least one modulator may be configured to support one or more techniques, such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes such as phase shift keying (PSK) or quadrature amplitude modulation (QAM). The transmission chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over a wireless medium. The transmission chain may also include one or more antennas 710 for transmitting the amplified signal into the air or wireless medium.

[0223] The receiver chain can be configured to receive signals (e.g., control information, data, packets) via a wireless medium. For example, the receiver chain may include one or more antennas 710 for receiving signals over the air or via a wireless medium. The receiver chain may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. The receiver chain may include at least one demodulator configured to demodulate the received signal and acquire transmitted data by reversing the modulation technique applied during signal transmission. The receiver chain may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0224] Figure 8 An example of a processor 800 suitable for implementing some embodiments of the present disclosure is illustrated. Processor 800 may be an example of a processor configured to perform various operations according to the examples described herein. Processor 800 may include a controller 802 configured to perform various operations according to the examples described herein. Processor 800 may optionally include at least one memory 804. Additionally or alternatively, processor 800 may optionally include one or more arithmetic logic units (ALUs) 806. One or more of these components may be electronically communicated or otherwise coupled (e.g., operative ground, communicative ground, functional ground, electronic ground, electrical ground) via one or more interfaces (e.g., buses).

[0225] Processor 800 may be a processor chipset and includes a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receive, acquire, retrieve, send, output, forward, store, determine, identify, access, write, read) according to the examples described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to the processor chipset or included in the processor chipset (e.g., processor 800)) or other memory (e.g., random access memory (RAM), read-only memory (ROM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), static RAM (SRAM), ferroelectric RAM (FeRAM), magnetic RAM (MRAM), resistive RAM (RRAM), flash memory, phase-change memory (PCM), etc.).

[0226] Controller 802 can be configured to manage and coordinate various operations of processor 800 (e.g., signaling, receiving, acquiring, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, and reading) to enable processor 800 to support various operations of the UE according to the examples described herein. For example, controller 802 can operate as a control unit of processor 800 to generate control signals for managing the operation of various components of processor 800. These control signals include enabling or disabling functional units, selecting data paths, initiating memory accesses, and coordinating operation timing.

[0227] Controller 802 can be configured to fetch (e.g., fetch, retrieve, receive) instructions from memory 804 and determine subsequent instructions(s) to be executed, enabling processor 800 to support various operations according to the examples described herein. Controller 802 can be configured to track the memory addresses of instructions associated with memory 804. Controller 802 can be configured to decode instructions to determine the operations to be performed and the operands involved. For example, controller 802 can be configured to interpret instructions and determine control signals to be output to other components of processor 800, enabling processor 800 to support various operations according to the examples described herein. Additionally or alternatively, controller 802 can be configured to manage data flow within processor 800. Controller 802 can be configured to control data transfers between registers, arithmetic logic unit (ALU), and other functional units of processor 800.

[0228] Memory 804 may include one or more caches (e.g., memory or other memory, such as RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc., local to or included in processor 800). In some implementations, memory 804 may reside within or on the processor chipset (e.g., local to processor 800). In some other implementations, memory 804 may reside outside the processor chipset (e.g., remote from processor 800).

[0229] Memory 804 may store computer-readable, computer-executable code, including instructions that, when executed by processor 800, cause processor 800 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. Controller 802 and / or processor 800 may be configured to execute computer-readable instructions stored in memory 804 to cause processor 800 to perform various functions (e.g., functions or tasks supporting transmit power priority). For example, processor 800 and / or controller 802 may be coupled to or coupled to memory 804, and processor 800, controller 802, and memory 804 may be configured to perform the various functions described herein. In some examples, processor 800 may include multiple processors, and memory 804 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein.

[0230] One or more ALU 806s can be configured to support a variety of operations as described in the examples herein. In some implementations, one or more ALU 806s may reside within or on a processor chipset (e.g., processor 800). In some other implementations, one or more ALU 806s may reside outside the processor chipset (e.g., processor 800). One or more ALU 806s can perform one or more calculations on data, such as addition, subtraction, multiplication, and division. For example, one or more ALU 806s can receive input operands and an opcode that determines the operation to be performed. One or more ALU 806s are configured with a variety of logic and arithmetic circuitry, including adders, subtractors, shifters, and logic gates, to process and manipulate data according to the operation. Alternatively or additionally, one or more ALU 806s may support logical operations such as AND, OR, XOR, NOR, and NAND, enabling one or more ALU 806s to handle conditional operations, comparisons, and bitwise operations.

[0231] Based on the examples disclosed herein, processor 800 may support wireless communication. Processor 800 may be configured to operate to support: components for determining a first configuration for lenient measurement assessment and a second configuration for neighboring cell measurement, wherein the second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configuration for lenient measurement assessment; and components for transmitting the first and second configurations to the UE.

[0232] Figure 9 A flowchart illustrating a method 900 performed by a UE according to various aspects of this disclosure is shown. Operation of method 900 may be implemented by the device or components thereof described herein. For example, operation of method 900 may be performed by the UE 104 described herein. In some implementations, the device may execute a set of instructions to control the functional elements of the device to perform the described functions. Alternatively or concurrently, the device may use dedicated hardware to perform aspects of the described functions.

[0233] At 910, the method may include receiving from a base station a first configuration for relaxed measurement assessment and a second configuration for neighboring cell measurements, wherein the second configuration includes an indication associated with neighboring cell measurement triggering or supplementary configuration for relaxed measurement assessment. Operation of 910 can be performed according to the examples described herein. In some implementations, aspects of operation of 910 may be derived from references... Figure 1 The aforementioned UE 104 is used for execution.

[0234] At 920, the method may include performing a relaxed measurement evaluation based on a first configuration and a second configuration. The operation of 920 can be performed according to the examples described herein. In some implementations, aspects of the operation of 920 may be derived from references... Figure 1 The aforementioned UE 104 is used for execution.

[0235] In some embodiments, the first configuration may include at least one of the following: a stationary or low-mobility standard based on Reference Signal Received Power (RSRP) for lenient measurement; or a non-cell edge standard based on RSRP / Reference Signal Received Quality (RSRQ) for lenient measurement.

[0236] In some embodiments, the indication associated with neighboring cell measurement triggering may include one of the following: an indication of time-based neighboring cell measurement triggering or an indication of distance-based neighboring cell measurement triggering.

[0237] In some embodiments, the UE may determine whether the satisfaction of a time-based criterion requires neighboring cell measurement based on an indication triggered by time-based neighboring cell measurement; and perform one of the following: ignore the lenient measurement assessment based on the determination that the satisfaction of the time-based criterion requires neighboring cell measurement; or continue the lenient measurement assessment based on the determination that the satisfaction of the time-based criterion does not require neighboring cell measurement.

[0238] In some embodiments, the indication triggered by time-based neighbor cell measurements may include either the service outage time of a serving non-terrestrial network (NTN) cell or the feeder link handover time.

[0239] In some embodiments, time-based criteria can be satisfied when the interval between the current time and the service stop time or feeder link switching time is less than a time threshold.

[0240] In some embodiments, the UE may determine whether the satisfaction of a distance-based criterion requires neighbor cell measurement based on an indication triggered by distance-based neighbor cell measurement; and perform one of the following: ignore a lenient measurement assessment based on the determination that the satisfaction of a distance-based criterion requires neighbor cell measurement; continue a lenient measurement assessment based on the determination that the satisfaction of a distance-based criterion requires neighbor cell measurement and the UE's serving NTN cell is a Earth-mobile cell; or continue a lenient measurement assessment based on the determination that the satisfaction of a distance-based criterion does not require neighbor cell measurement.

[0241] In some embodiments, the indication triggered by distance-based neighboring cell measurements may include a reference location or a distance threshold.

[0242] In some embodiments, a distance-based criterion can be satisfied when the distance from the UE to the reference location is greater than a distance threshold.

[0243] In some embodiments, the UE may continue the relaxed measurement assessment based on determining that neighboring cell measurements are required according to the RSRP / RSRQ standard, and an offset is applied to the first configuration.

[0244] In some embodiments, supplementary configuration for the loose measurement evaluation may include at least one criterion for the static state evaluation, and the processor is configured to perform the loose measurement evaluation using at least one criterion for the static state evaluation.

[0245] In some embodiments, at least one criterion for static state assessment includes a distance-based criterion indicating one of the following: a first threshold for the distance change from the UE to the previous UE reference location, a second threshold for the distance change from the UE to the serving cell reference location, a third threshold for the distance change from the UE to the serving cell reference location minus the expected distance change due to the movement of the access node or base station, or a fourth threshold for the rate of change of distance from the UE to the serving cell reference location.

[0246] In some embodiments, performing a lenient measurement assessment may include determining that a criterion based on distance change is met based on determining one of the following: the distance change from the UE to the previous UE reference location is less than or no greater than a first threshold once or over a certain period of time; the distance change from the UE to the serving cell reference location is less than or no greater than a second threshold once or over a certain period of time; the distance change from the UE to the serving cell reference location minus the expected distance change due to the movement of the access node or base station is less than or no greater than a third threshold once or over a certain period of time; or the rate of change of distance from the UE to the serving cell reference location is less than or no greater than a fourth threshold once or over a certain period of time.

[0247] In some embodiments, at least one criterion for static state assessment may include a terrestrial network (TN) area-based criterion indicating one of the following: a fifth threshold for the distance change from the UE to at least one TN area reference location, or a sixth threshold for the satisfaction status of a distance-based criterion for at least one TN area.

[0248] In some embodiments, performing a lenient measurement assessment may include determining whether a TN-based criterion is met based on determining one of the following: the distance change from the UE to at least one TN-based reference location is less than or no greater than a fifth threshold once or over a certain period of time; or the distance change from the UE to at least one TN-based reference location is less than or no greater than a sixth threshold once or over a certain period of time.

[0249] In some embodiments, at least one criterion for static state assessment may include a criterion based on propagation delay change or a criterion based on TA delay change indicating one of the following: a seventh threshold of the propagation delay or TA change between the UE and the base station minus the expected propagation delay or TA change due to the movement of the access node or base station.

[0250] In some embodiments, performing a lenient measurement assessment may include determining whether a criterion based on propagation delay change or a criterion based on TA delay change is met based on determining one of the following: the propagation delay or TA change between the UE and the base station minus the expected propagation delay or TA change due to the movement of the access node or base station is less than or not greater than a seventh threshold at one time or within a certain period of time; or the propagation delay or TA change rate between the UE and the base station is less than or not greater than an eighth threshold at one time or within a certain period of time.

[0251] In some embodiments, at least one criterion for static state assessment may include a criterion based on elevation angle change indicating one of the following: a ninth threshold of elevation angle change between the UE and the access node or base station minus the expected elevation angle change due to movement of the access node or base station, or a tenth threshold of the elevation angle change rate between the UE and the access node or base station.

[0252] In some embodiments, performing a lenient measurement evaluation may include determining that a criterion based on elevation change is met based on determining one of the following: the elevation change between the UE and the base station minus the expected elevation change due to the movement of the access node or base station is less than or no greater than a ninth threshold once or over a certain period of time; or the elevation change rate between the UE and the access node or base station is less than or no greater than a tenth threshold once or over a certain period of time (if configured).

[0253] In some embodiments, supplementary configuration for a lenient measurement assessment may include at least one reference RSRP update rule, and the processor is configured to perform a lenient measurement assessment using at least one reference RSRP update rule.

[0254] In some embodiments, at least one reference RSRP update rule may include one of the following: a first duration for protecting the timer; a second duration for updating the reference RSRP; an indication to ignore updates to the reference RSRP; or an update threshold for the reference RSRP.

[0255] In some embodiments, performing a lenient measurement assessment may include one of the following: after starting a protection timer when the reference RSRP is updated, blocking the update of the reference RSRP for a first duration; updating the reference RSRP based on determining that the current RSRP is greater than the reference RSRP for a second duration; ignoring the update of the reference RSRP upon receiving an indication; or updating the reference RSRP based on determining that the difference between the current RSRP and the reference RSRP is equal to or greater than an update threshold.

[0256] In some embodiments, the first configuration may include a RSRP-based stationary or low-mobility criterion for lenient measurement, and the supplementary configuration may include at least one offset of the RSRP-based stationary or low-mobility criterion for lenient measurement, and performing a lenient measurement assessment may include performing a stationary state assessment based on the RSRP-based stationary or low-mobility criterion having at least one offset.

[0257] In some embodiments, at least one offset may include one of the following: an offset to a threshold used to evaluate RSRP changes based on a stationary or low-mobility criterion for RSRP; or an offset to the time period during which RSRP changes for a lenient measurement of a stationary or low-mobility criterion are evaluated.

[0258] In some embodiments, at least one offset is associated with one of the following: distance or distance change from the UE to the point; propagation delay or timing advance (TA) or propagation delay or TA change between the UE and the base station; or elevation angle or elevation change between the UE and the access node or base station.

[0259] In some embodiments, supplementary configuration may include at least one criterion for non-cell edge state assessment, and the UE may perform a relaxed measurement assessment based at least on at least one criterion for non-cell edge state assessment.

[0260] In some embodiments, at least one criterion for non-cell edge state assessment may include a distance-varying criterion indicating an eleventh threshold of distance from the UE to the serving cell reference location, and performing a lenient measurement assessment may include determining that the distance-varying criterion is satisfied based on determining that the distance from the UE to the serving cell reference location is less than or not greater than the eleventh threshold once or for a certain period of time.

[0261] In some embodiments, at least one criterion for non-cell edge state assessment may include a propagation delay-based or TA-based criterion indicating a twelfth threshold of propagation delay or TA between the UE and the base station, and performing a lenient measurement assessment may include determining that the propagation delay-based or TA-based criterion is satisfied based on determining that the propagation delay or TA between the UE and the base station is less than or not greater than the twelfth threshold at one time or for a certain duration.

[0262] In some embodiments, at least one criterion for non-cell edge state assessment may include an elevation angle-based criterion indicating a thirteenth threshold between the UE and the access node or base station, and performing a lenient measurement assessment may include determining that the elevation angle-based criterion is satisfied based on determining that the elevation angle between the UE and the access node or base station is less than or not greater than the thirteenth threshold once or for a certain period of time.

[0263] In some embodiments, the UE may be a capability-reduced (Redcap) UE.

[0264] Figure 10 A flowchart illustrating a method 1000 performed by a base station according to various aspects of this disclosure is shown. The operation of method 1000 may be implemented by the device or components thereof described herein. For example, the operation of method 1000 may be performed by the network entity 102 described herein. In some implementations, the device may execute a set of instructions to control the functional elements of the device to perform the described functions. Alternatively or additionally, the device may use dedicated hardware to perform aspects of the described functions.

[0265] At point 1010, the method may include determining a first configuration for lenient measurement assessment and a second configuration for neighboring cell measurements, wherein the second configuration includes an indication associated with neighboring cell measurement triggering or a supplementary configuration for lenient measurement assessment. The operation of point 1010 can be performed according to the examples described herein. In some implementations, aspects of the operation of point 1010 may be derived from references... Figure 1 The network entity 102 performs the execution.

[0266] At point 1020, the method may include sending a first configuration and a second configuration to the UE. The operation at point 1020 can be performed according to the examples described herein. In some implementations, aspects of the operation at point 1020 may be derived from references. Figure 1 The network entity 102 performs the execution.

[0267] In some embodiments, the first configuration may include at least one of the following: a stationary or low-mobility standard based on Reference Signal Received Power (RSRP) for lenient measurement; or a non-cell edge standard based on RSRP / Reference Signal Received Quality (RSRQ) for lenient measurement.

[0268] In some embodiments, the indication associated with neighboring cell measurement triggering may include one of the following: an indication of time-based neighboring cell measurement triggering or an indication of distance-based neighboring cell measurement triggering.

[0269] In some embodiments, the indication triggered by time-based neighbor cell measurements may include either the service outage time of a serving non-terrestrial network (NTN) cell or the feeder link handover time.

[0270] In some embodiments, the indication triggered by distance-based neighboring cell measurements may include a reference location or a distance threshold.

[0271] In some embodiments, supplementary configurations for lenient measurement evaluation may include at least one criterion for static state evaluation.

[0272] In some embodiments, at least one criterion for static state assessment may include a distance-based criterion indicating one of the following: a first threshold for the distance change from the UE to the previous UE reference location, a second threshold for the distance change from the UE to the serving cell reference location, a third threshold for the distance change from the UE to the serving cell reference location minus the expected distance change due to the movement of the access node or base station, or a fourth threshold for the rate of change of distance from the UE to the serving cell reference location.

[0273] In some embodiments, at least one criterion for static state assessment may include a terrestrial network (TN) area-based criterion indicating one of the following: a fifth threshold for the distance change from the UE to at least one TN area reference location, or a sixth threshold for the satisfaction status of a distance-based criterion for at least one TN area.

[0274] In some embodiments, at least one criterion for static state assessment may include a criterion based on propagation delay change or a criterion based on TA delay change indicating one of the following: a seventh threshold of the propagation delay or TA change between the UE and the base station minus the expected propagation delay or TA change due to the movement of the access node or base station.

[0275] In some embodiments, at least one criterion for static state assessment may include a criterion based on elevation angle change indicating one of the following: a ninth threshold of elevation angle change between the UE and the access node or base station minus the expected elevation angle change due to movement of the access node or base station, or a tenth threshold of the elevation angle change rate between the UE and the access node or base station.

[0276] In some embodiments, supplementary configuration for lenient measurement evaluation may include at least one reference RSRP update rule.

[0277] In some embodiments, at least one reference RSRP update rule may include one of the following: a first duration for protecting the timer; a second duration for updating the reference RSRP; ignoring the reference RSRP update indication; or a reference RSRP update threshold.

[0278] In some embodiments, the first configuration includes a RSRP-based stationary or low-mobility standard for lenient measurement, and the supplementary configuration may include at least one offset of the RSRP-based stationary or low-mobility standard for lenient measurement.

[0279] In some embodiments, at least one offset may include one of the following: an offset to a threshold used to evaluate RSRP changes based on a stationary or low-mobility criterion for RSRP; or an offset to the time period during which RSRP changes for a lenient measurement of a stationary or low-mobility criterion are evaluated.

[0280] In some embodiments, at least one offset may be associated with one of the following: distance or distance change from the UE to the point; propagation delay or timing advance (TA) or propagation delay or TA change between the UE and the base station; or elevation angle or elevation change between the UE and the access node or base station.

[0281] In some embodiments, supplementary configuration may include at least one criterion for non-cell edge state assessment.

[0282] In some embodiments, at least one criterion for non-cell edge state assessment may include one of the following: a distance-based criterion indicating an eleventh threshold of distance from the UE to the serving cell reference location; a propagation delay-based or TA-based criterion indicating a twelfth threshold of propagation delay or TA between the UE and the base station; or an elevation angle-based criterion indicating a thirteenth threshold of elevation angle between the UE and the access node or base station.

[0283] In some embodiments, the base station may be located at a satellite or communicate with the UE via a satellite.

[0284] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0285] The various illustrative blocks and components disclosed herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware component 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 processor, controller, microcontroller or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0286] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions can also be physically located in various locations, including being distributed such that portions of the functions are implemented in different physical locations.

[0287] Computer-readable media include both non-transitory computer storage media and communication media, with communication media including any medium that facilitates the transfer of a computer program from one place to another. Non-transitory storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer. For example, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, optical disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.

[0288] As used herein, including in the claims, the article “a” preceding an element is unrestricted and should be understood to mean “at least one” or “one or more” of those elements. The terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. As used herein, including in the claims, the use of “or” in a list of items (e.g., a list of items beginning with phrases such as “at least one of…” or “one or more of…” or “one or two of…”) indicates an inclusive list, such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase “based on” should not be construed as a reference to a closed set of conditions. For example, an example step described as “based on condition A” without departing from the scope of this disclosure could be based on both condition A and condition B. In other words, as used herein, the phrase “based on” should be interpreted in the same manner as the phrase “at least partially based on.” Furthermore, as used herein, including in the claims, “set” can include one or more elements.

[0289] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE), comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: receive, via the transceiver, from a base station, a first configuration for a relaxed measurement evaluation, and a second configuration for a neighbor cell measurement, wherein the second configuration comprises: an indication associated with the neighbor cell measurement trigger, or a supplemental configuration for the relaxed measurement evaluation; and perform the relaxed measurement evaluation based on the first configuration and the second configuration.

2. The UE of claim 1, wherein the indication associated with the neighbor cell measurement trigger comprises one of: an indication of a time-based neighbor cell measurement trigger, or an indication of a distance-based neighbor cell measurement trigger.

3. The UE of claim 2, wherein the processor is further configured to: determine, based on the indication of the time-based neighbor cell measurement trigger, whether a satisfaction of a time-based criterion requires the neighbor cell measurement; and one of: ignore the relaxed measurement evaluation based on a determination that the satisfaction of the time-based criterion requires the neighbor cell measurement; or continue the relaxed measurement evaluation based on a determination that the satisfaction of the time-based criterion does not require the neighbor cell measurement.

4. The UE of claim 2, wherein the processor is further configured to: determine, based on the indication of the distance-based neighbor cell measurement trigger, whether a satisfaction of a distance-based criterion requires the neighbor cell measurement; and one of: ignore the relaxed measurement evaluation based on a determination that the satisfaction of the distance-based criterion requires the neighbor cell measurement; continue the relaxed measurement evaluation based on a determination that the satisfaction of the distance-based criterion requires the neighbor cell measurement and a serving NTN cell of the UE is an earth-moving cell; or continue the relaxed measurement evaluation based on a determination that the satisfaction of the distance-based criterion does not require the neighbor cell measurement. at least one criterion for stationary state evaluation, and the processor is configured to perform the relaxed measurement evaluation using the at least one criterion for stationary state evaluation. a distance change-based criterion that indicates one of:

5. The UE of claim 1, wherein the supplemental configuration for the relaxed measurement evaluation comprises: a first threshold value of a distance change from the UE to a previous UE reference location, 6. The UE of claim 5, wherein the at least one criterion for stationary state evaluation comprises: a second threshold value of a distance change from the UE to a serving cell reference location, a third threshold value of a distance change from the UE to a serving cell reference location minus an expected distance change due to movement of an access node or the base station, or a fourth threshold value of a rate of distance change from the UE to a serving cell reference location. determine that the distance change-based criterion is satisfied based on a determination that one of: the distance change from the UE to the previous UE reference location is less than or not greater than the first threshold value at one time or over a certain time duration; 7. The UE of claim 6, wherein performing the relaxed measurement evaluation comprises: the distance change from the UE to the serving cell reference location is less than or not greater than the second threshold value at one time or over a certain time duration; the distance change from the UE to the serving cell reference location minus the expected distance change due to movement of an access node or the base station is less than or not greater than the third threshold value at one time or over a certain time duration; or the rate of distance change from the UE to the serving cell reference location is less than or not greater than the fourth threshold value at one time or over a certain time duration. a change in distance from the UE to the serving cell reference location minus an expected change in distance due to movement of the access node or the base station is less than or not greater than the third threshold at a time or over a time duration; or a rate of change in distance from the UE to the serving cell reference location is less than or not greater than the fourth threshold at a time or over a time duration.

8. The UE of claim 1, wherein the supplemental configuration for the relaxed measurement evaluation comprises: at least one reference RSRP update rule, and the processor is configured to perform the relaxed measurement evaluation with the at least one reference RSRP update rule.

9. The UE of claim 8, wherein the at least one reference RSRP update rule comprises one of: a first duration for a guard timer; a second duration for an update of a reference RSRP; an indication to ignore an update of the reference RSRP; or an update threshold for the reference RSRP.

10. The UE of claim 1, wherein the first configuration comprises: an RSRP-based stationary or low mobility criterion for relaxed measurements, and the supplemental configuration comprises at least one offset for the RSRP-based stationary or low mobility criterion for relaxed measurements, and performing the relaxed measurement evaluation comprises performing the stationary state evaluation based on the RSRP-based stationary or low mobility criterion with the at least one offset.

11. A base station, comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: determine a first configuration for relaxed measurement evaluation, and a second configuration for neighbor cell measurements, wherein the second configuration comprises an indication associated with the neighbor cell measurement trigger, or a supplemental configuration for the relaxed measurement evaluation; and transmit, via the transceiver, the first configuration and the second configuration to a user equipment (UE).

12. The base station of claim 11, wherein the indication associated with the neighbor cell measurement trigger comprises one of: an indication of a time-based neighbor cell measurement trigger, or an indication of a distance-based neighbor cell measurement trigger.

13. The base station of claim 11, wherein the supplemental configuration for the relaxed measurement evaluation comprises: at least one criterion for stationary state evaluation.

14. The base station of claim 13, wherein the at least one criterion for stationary state evaluation comprises: a distance change-based criterion indicating one of: a first threshold for a change in distance from the UE to a previous UE reference location, a second threshold for a change in distance from the UE to a serving cell reference location, a third threshold for a change in distance from the UE to the serving cell reference location minus an expected change in distance due to movement of an access node or the base station, or a fourth threshold for a rate of change in distance from the UE to the serving cell reference location.

15. A processor for wireless communication, comprising: at least one memory; and a controller coupled with the at least one memory and configured such that the controller: receives, at a user equipment, from a base station, a first configuration for relaxed measurement evaluation, and a second configuration for neighbor cell measurements, wherein the second configuration comprises an indication associated with the neighbor cell measurement trigger, or a supplemental configuration for the relaxed measurement evaluation; and performs the relaxed measurement evaluation based on the first configuration and the second configuration.

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