WO2024183055A1

WO2024183055A1 - Systems and methods for dynamic support of bandwidth part without restriction

Info

Publication number: WO2024183055A1
Application number: PCT/CN2023/080472
Authority: WO
Inventors: Qiming Li; Yang Tang; Xiang Chen; Dawei Zhang; Jie Cui; Manasa RAGHAVAN; Yuexia Song
Original assignee: Apple Inc.
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2024-09-12

Abstract

Systems and methods for dynamic support of a bandwidth part (BWP) without restriction are discussed herein. A user equipment (UE) performs a first layer 1 (L1) measurement corresponding to a target BWP that is not configured with any synchronization signal block (SSB) that occurs in first active BWP according to a first L1 measurement configuration option from a switch list having a plurality of L1 measurement configuration options. The UE then receives, from a network, a configuration switch indication instructing a configuration switch from the first L1 measurement configuration option to a second L1 measurement configuration option of the switch list. The UE performs the configuration switch in response. The UE then performs a second L1 measurement corresponding to the target BWP according to the second L1 measurement configuration option. In some circumstances, the UE instead provides the configuration switch indication to the network. Corresponding network behaviors are discussed.

Description

SYSTEMS AND METHODS FOR DYNAMIC SUPPORT OF BANDWIDTH PART WITHOUT RESTRICTION

TECHNICAL FIELD

This application relates generally to wireless communication systems, including wireless communications systems performing measurements corresponding to a target bandwidth part (BWP) .

BACKGROUND

Wireless mobile communication technology uses various standards and protocols to transmit data between a base station and a wireless communication device. Wireless communication system standards and protocols can include, for example, 3rd Generation Partnership Project (3GPP) long term evolution (LTE) (e.g., 4G) , 3GPP new radio (NR) (e.g., 5G) , and Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard for wireless local area networks (WLAN) (commonly known to industry groups as) .

As contemplated by the 3GPP, different wireless communication systems' standards and protocols can use various radio access networks (RANs) for communicating between a base station of the RAN (which may also sometimes be referred to generally as a RAN node, a network node, or simply a node) and a wireless communication device known as a user equipment (UE) . 3GPP RANs can include, for example, global system for mobile communications (GSM) , enhanced data rates for GSM evolution (EDGE) RAN (GERAN) , Universal Terrestrial Radio Access Network (UTRAN) , Evolved Universal Terrestrial Radio Access Network (E-UTRAN) , and/or Next-Generation Radio Access Network (NG-RAN) .

Each RAN may use one or more radio access technologies (RATs) to perform communication between the base station and the UE. For example, the GERAN implements GSM and/or EDGE RAT, the UTRAN implements universal mobile telecommunication system (UMTS) RAT or other 3GPP RAT, the E-UTRAN implements LTE RAT (sometimes simply referred to as LTE) , and NG-RAN implements NR RAT (sometimes referred to herein as 5G RAT, 5G NR RAT, or simply NR) . In certain deployments, the E-UTRAN may also implement NR RAT. In certain deployments, NG-RAN may also implement LTE RAT.

A base station used by a RAN may correspond to that RAN. One example of an E-UTRAN base station is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (also commonly denoted as evolved Node B, enhanced Node B, eNodeB, or eNB) . One example of an NG-RAN base station is a next generation Node B (also sometimes referred to as a g Node B or gNB) .

A RAN provides its communication services with external entities through its connection to a core network (CN) . For example, E-UTRAN may utilize an Evolved Packet Core (EPC) while NG-RAN may utilize a 5G Core Network (5GC) .

Frequency bands for 5G NR may be separated into two or more different frequency ranges. For example, Frequency Range 1 (FR1) may include frequency bands operating in sub-6 gigahertz (GHz) frequencies, some of which are bands that may be used by previous standards, and may potentially be extended to cover new spectrum offerings from 410 megahertz (MHz) to 7125 MHz. Frequency Range 2 (FR2) may include frequency bands from 24.25 GHz to 52.6 GHz. Note that in some systems, FR2 may also include frequency bands from 52.6 GHz to 71 GHz (or beyond) . Bands in the millimeter wave (mmWave) range of FR2 may have smaller coverage but potentially higher available bandwidth than bands in FR1. Skilled persons will recognize these frequency ranges, which are provided by way of example, may change from time to time or from region to region.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

To easily identify the discussion of any particular element or act, the most significant digit or digits in a reference number refer to the figure number in which that element is first introduced.

FIG. 1 illustrates a table relating various features of various L1 measurement configuration options, according to embodiments herein.

FIG. 2 illustrates a diagram showing a BWP switch that motivates a configuration switch from a first L1 measurement configuration option of a switch list to a second L1 measurement configuration option of the switch list, according to embodiments herein.

FIG. 3 illustrates a timeline for a configuration switch that occurs with respect to a BWP switch, according to embodiments herein.

FIG. 4 illustrates a method of a UE, according to embodiments herein.

FIG. 5 illustrates a method of a UE, according to embodiments herein.

FIG. 6 illustrates a method of a RAN, according to embodiments herein.

FIG. 7 illustrates an example architecture of a wireless communication system, according to embodiments disclosed herein.

FIG. 8 illustrates a system for performing signaling between a wireless device and a network device, according to embodiments disclosed herein.

DETAILED DESCRIPTION

Various embodiments are described with regard to a UE. However, reference to a UE is merely provided for illustrative purposes. The example embodiments may be utilized with any electronic component that may establish a connection to a network and is configured with the hardware, software, and/or firmware to exchange information and data with the network. Therefore, the UE as described herein is used to represent any appropriate electronic component.

In some circumstances, it may be beneficial to configure a UE to perform various layer 1 (L1) measurements corresponding to a target BWP when a current active BWP does not contain a synchronization signal block (SSB) associated to the initial or target BWP for the measurement. Such cases may arise corresponding to L1 measurements performed as part of, for example, radio link management (RLM) operations, beam management (BM) operations, and/or beam failure detection (BFD) operations.

Within this context, various L1 measurement configuration options for performing L1 measurement corresponding to a target BWP are considered herein. In a first option ( "Option A" ) , L1 measurement for one or more of BM, RLM, and/or BFD corresponding to a target BWP is performed based on a channel state information reference signal (CSI-RS) within the active BWP.

In another option ( "Option B" ) , L1 measurement for one or more of BM, RLM, and/or BFD corresponding to the target BWP is performed based on an SSB configured for the target BWP that is located outside the active BWP.

In a first subset of these cases ( "Option B-1" ) , it may be that a capability of the UE does not require the use of a measurement gap for the UE to perform these measurement (s) . In some sub-cases ( "Option B-1-1" ) , the UE may be capable of using a larger BWP than that defined for the active BWP to receive the SSB (at its location outside of the active BWP) and without interruption of regular transmit (Tx) /receive (Rx) behavior on the active BWP. In other sub-cases ( "Option B-1-2" ) , the UE may be capable of using a larger BWP than that defined for the active BWP to receive the SSB (at its location outside of the active BWP) with interruption of regular transmit (Tx) /receive (Rx) behavior on the active BWP.

Note that herein, reference to the use (or non-use) of a measurement gap could refer to the use (or non-use) of one or more of a variety of measurement gap types. For example, the use (or non-use) of a measurement gap as discussed herein could refer to the use (or non-use) of any of a full measurement gap and/or a network-controlled small gap (NCSG) (e.g., as may be understood in some 3GPP wireless communications systems) .

In a second subset of cases where L1 measurement for one or more of BM, RLM, and/or BFD corresponding to the target BWP is performed based on the SSB configured for the target BWP that is located outside the active BWP ( "Option B-2" ) , it may be that the UE performs such L1 measurement (s) by using a measurement gap. In some sub-cases ( "Option B-2-2" ) , it may be that the measurement gap is a dedicated full measurement gap or a dedicated network-controlled small gap (NCSG) .

In a third option ( "Option C" ) , the L1 measurement for BM, RLM, and/or BFD may be performed on a non-cell defining SSB (NCD-SSB) (e.g., corresponding to a feature group (FG) 6-1 UE hardware architecture, as may be defined with respect to some wireless communication network implementations) .

FIG. 1 illustrates a table 100 relating various features of various L1 measurement configuration options, according to embodiments herein. The table 100 refers in particular to the L1 measurement configuration options Option A, Option B-1-1, Option B-1-2, Option B-2-2, and Option C as these are described herein. Relatively speaking, it may be understood that there are pros and cons with respect to each of the illustrated L1 measurement configuration options.

As illustrated in the table 100, Option A may have a relatively low impact on a specification for the wireless communication system in question, may operate with a relatively low power consumption, may have a relatively lower level of UE complexity, may have a relatively low impact on mobility considerations, and may have no impact on data throughput.

Further, Option B-1-1 may have a relatively low impact on a specification for the wireless communication system, may operate with a relatively high power consumption, may use a relatively low to medium level of UE complexity, may have a relatively low impact on mobility considerations, and may have no impact on data throughput.

Option B-1-2 may have a medium impact on a specification for the wireless communication system, may operate with a medium power consumption, may use a relatively low to medium level of UE complexity, may have a relatively low impact on mobility considerations, and may have a low to medium impact on data throughput.

Option B-2-2 may have a low to medium impact on a specification for the wireless communication system, may operate with a relatively low power consumption, may use a relatively low to medium level of UE complexity, may have a relatively low impact on mobility considerations, and may have a low to medium impact on data throughput.

Option C may have a relatively low impact on a specification for the wireless communication system, may operate with a relatively low power consumption, may use a relatively lower level of UE complexity, may have a relatively low impact on mobility considerations, and may have no impact on data throughput.

Further, it may be that different L1 measurement configuration options use different UE implementations. For instance, for Option A, the UE may implement CSI-RS based RLM/BFD/BM.

For Option B-1-1 and Option B-1-2, the UE may be capable of operating with a with larger bandwidth (BW) that that defined for the active BWP (e.g., up to the channel BW (CBW) as understood by the UE for the channel) , and/or be equipped with an additional radio frequency (RF) chain that may be used to receive target SSB outside of an active BWP (simultaneously to the use of a first RF chain operating with respect to the active BWP) .

For Option B-2-2, the UE may be capable of using dedicated full measurement gaps and/or NCSGs.

For Option C, the UE should be capable of recognizing and using NCD-SSBs (e.g., as introduced for reduced capability (RedCap) UEs for some NR contexts) .

Note that the table 100 of FIG. 1 illustrates considerations mainly with respect to the UE perspective/aspect. Another aspect for consideration is for the corresponding network side capabilities that should be in place. For instance, to use Option A, the network may be capable of configuring the CSI-RS. Further, to use Option C, the network may be capable of formulating and transmitting the NCD-SSB.

It may be desirable to promote flexibility between various L1 measurement configuration options within a wireless communication network. From the flexibility point of view, it is accordingly desirable for the UE and/or network to be capable of using multiple L1 measurement configuration options, and for the network and the UE to be capable of dynamically switching among the different L1 measurement configuration options for which there is capability.

Accordingly, in some embodiments, it may be that the UE sends, to the network, capability information regarding L1 measurement configuration option (s) which are supported at the UE.

A switch list that is known to each of the UE and the network defines available L1 measurement configuration options according to which the UE may perform L1 measurement corresponding to a target BWP that is not configured with any SSB that occurs inside a current active BWP of the UE.

In some cases, it may be that the switch list is pre-defined in a specification for the wireless communication system for the network and the UE. In some cases, the switch list may be configured by the network and sent to the UE. In some cases, the network may use capability information from the UE to populate the switch list with L1 measurement configuration options which are supported by the UE.

Then, signaling between the network and the UE may be used to select or switch to a new L1 measurement configuration option on the switch list, such that the network and the UE stop operation according to a first L1 measurement configuration option (if any) and begin operation according to the selected/switched-to L1 measurement configuration option.

In a first case, a selection of or switch to an L1 measurement configuration option of the switch list is controlled by the network. In such cases, one of a radio resource control (RRC) message, a medium access control control element (MAC-CE) , and a downlink control information (DCI) command may be sent from the network to the UE to select/switch among the different L1 measurement configuration options of the switch list.

In a second case, a selection of or switch to an L1 measurement configuration option of the switch list is controlled by the UE. In such cases, it may be that an indication that the UE is allowed to switch among the L1 measurement configuration options of the switch list is first provided to the UE by the network. It may be that the network also provides a list of candidate L1 measurement configuration options which are allowed for selection/switching (e.g., a subset of the switch list) , as well as any corresponding configurations.

Further, in such cases, one of an RRC message, a MAC-CE, and an uplink control information (UCI) command may be sent from the UE to the network to select/switch among the different L1 measurement configuration options of the switch list.

In a third case, a selection of or switch to an L1 measurement configuration option is controlled by the network as informed by assistance information provided by the UE to the network. In such cases, based on the L1 measurement configuration options found in the switch list, the UE may provide the network with assistance information that informs the network about condition (s) under which various one (s) of the L1 measurement configuration options found in the switch list may be used. In some cases, it may be that the UE's understanding of the switch list at this stage corresponds to/is informed by UE capability information also generated by the UE and sent to the network.

In all cases, it may be understood that various parameters/objects/operations may be pre-configured by the network in order to enable switching to the various L1 measurement configuration options found in the switch list. For instance, if Option A is in the switch list, the network may provide the UE with a corresponding CSI-RS configuration for use for an L1 measurement for corresponding RLM/BM/BFD operation (s) . Further, if Option B-2-2 is in the switch list, the network may configure the UE for the application of a corresponding dedicated full measurement gaps/dedicated NCSGs (which may be enabled once Option B-2-2 is enabled) . Such parameters/objects/operations that are pre-configured may be understood as “pre-configurations” as discussed herein.

FIG. 2 illustrates a diagram 200 showing a BWP switch 202 that motivates a configuration switch from a first L1 measurement configuration option of a switch list to a second L1 measurement configuration option of the switch list, according to embodiments herein. FIG. 2 illustrates the behavior of a UE 204 with respect to a channel 206 having the indicated CBW 208 as established with respect to the base station 210 both before and after the BWP switch 202.

As can be seen, prior to the BWP switch 202, a target SSB 212 (e.g., an SSB that is configured within a target BWP) is close to but outside the first active BWP 214 of the UE that is defined at the UE at this time. In such circumstances, as illustrated, the UE can support Option B-1 (e.g., either of Option B-1-1 and/or B-1-2) in such circumstances, since the UE does not need to maintain a very large first actual BWP 216 to receive both the first active BWP 214 and the target SSB 212.

However, after the BWP switch 202, the UE 204 transitions from using the first active BWP 214 to instead using the second active BWP 218 as its current active BWP. In such cases, if (as illustrated) , the target SSB 212 is far away from the new active BWP (the second active BWP 218) , the UE may not be able to support Option B-1, since the UE cannot or cannot reasonably maintain the relatively larger second actual BWP 220 that can receive both the second active BWP 218 and the target SSB 212 (this is illustrated by the graphical “X” 222 in FIG. 2) .

Accordingly, in such circumstances, the BWP switch 202 may trigger a configuration switch between the UE and the network, such that a different L1 measurement configuration option (e.g., other than Option B-1 as in the illustrated case) of a currently active switch list operates instead in order to accomplish a L1 measurement corresponding to the target BWP.

FIG. 3 illustrates a timeline 300 for a configuration switch that occurs with respect to a BWP switch 316, according to embodiments herein. The timeline 300 illustrates various operations of the UE 302 and the network (as represented by the base station 304) according to the illustrated timeline.

As illustrated, the UE 302 may provide the base station 304 with capability information 306 that indicates that the UE is capable of supporting Option B-1-1 and Option B-2-2. Further, the UE 302 may provide the base station 304 with assistance information 308 that indicates a first condition under which Option B-1-1 may be used (in the illustration, this condition is a maximum frequency separations constraint) and a second condition under which Option B-2-2 may be used (in the illustration, this condition is defined with respect to supported measurement gap patterns at the UE) . The UE 302 may include conditions for Option B-1-1 and Option B-2-2 in the assistance information 308 based on a presumption that a switch list 312 to be provided by the base station 304 to the UE 302 may include these Options due to the fact that those Options are being provided to the base station 304 by the UE 302 in the capability information 306.

The base station 304 then provides the UE 302 with configuration information 310. As illustrated, the configuration information 310 may include the switch list 312 which includes two L1 measurement configuration options, Option B-1-1 and B-2-2. Note that the inclusion by the base station 304 of Option B-1-1 and B-2-2 in the switch list 312 may be responsive to the capability information 306 from the UE 302 that indicates that the UE 302 is capable of implementing these options.

The configuration information 310 provided to the UE 302 by the base station 304 may also include various pre-configurations 314 (e.g., various parameters/objects/operations that may be pre-configured by the network in order to enable switching to the various L1 measurement configuration options found in the switch list) . For example, the pre-configurations 314 include a dedicated measurement gap pattern (which may be defined through the use of a measurement gap length (MGL) and a measurement gap repetition period (MGRP) , as illustrated) corresponding to the potential use of Option B-2-2.

In the timeline 300 of FIG. 3, after the communication of the configuration information 310 and prior to the BWP switch 316, Option B-1-1 is used (the UE performs L1 measurement corresponding to RLM/BM/BFD without any measurement gap or interruption) . Note that if Option B-1-2 had been indicated by the UE 302 in the capability information 306/included in the switch list 312 by the base station 304 and was instead being used, the UE would perform L1 measurement corresponding to RLM/BM/BFD without a measurement gap but with interruption.

Then, after the BWP switch 316, it may be that the UE cannot or cannot reasonably maintain the use of Option B-1-1/Option B-1-2. This situation may be, for example, analogous to the situation described in relation to the diagram 200 of FIG. 2.

In response to the new circumstances after the BWP switch 316, either the base station 304 will send a configuration switch indication 318 to the UE 302, or the UE 302 will send a configuration switch indication 320 to the base station 304 (depending on which of the UE 302 and the base station 304 is controlling the list switching behavior) . The configuration switch indication 318/the configuration switch indication 320 (as the case may be) may indicate to perform a configuration switch to Option B-2-2/that a configuration switch to Option B-2-2 will be performed. Under Option B-2-2, a dedicated full measurement gap/NCSG configuration 322 is used by the UE, under which the UE identifies and uses measurement gaps to measure a target SSB corresponding to a target BWP outside the active BWP that applies after the BWP switch 316. The dedicated full measurement gap/NCSG configuration 322 may have been previously provided to the UE 302 by the base station 304 as part of the pre-configurations 314.

It may be that a configuration switch to a new L1 measurement configuration option may occur after a time period X after a BWP switch (e.g., a BWP switch that triggers the configuration switch) . For example, FIG. 3 illustrates that the configuration switch to Option B-2-2 (corresponding to the use of the dedicated full measurement gap/NCSG configuration 322) as described occurs after a time period X 324 following the BWP switch 316. In some embodiments, a time period X may be measured in milliseconds.

In some cases, the time period X may be a fixed value that is pre-defined in a specification for the applicable wireless communication system. In some cases, the time period X may be a configured value that is provided to the UE by the network. In some cases, the time period X may be a capability value that is subject to a UE capability. For example, the UE may indicate, to the network, support of X = 3ms, 5ms, etc. The use of a time period X may ensure that the UE complies with requirement of a specification for the wireless communication system in which the UE operates.

FIG. 4 illustrates a method 400 of a UE, according to embodiments herein. The method 400 includes performing 402 a first L1 measurement corresponding to a target BWP that is not configured with any SSB that occurs inside of a first active BWP according to a first L1 measurement configuration option from a switch list having a plurality of L1 measurement configuration options. The method 400 further includes receiving 404, from a network, a configuration switch indication indicating to the UE to perform a configuration switch from the first L1 measurement configuration option to a second L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list. The method 400 further includes performing 406 the configuration switch in response to the configuration switch indication. The method 400 further includes performing 408 a second L1 measurement corresponding to the target BWP according to the second L1 measurement configuration option.

In some embodiments, the method 400 further includes performing a BWP switch from the first active BWP to a second active BWP, wherein the target BWP is not configured with any SSB that occurs inside of the second active BWP, and wherein the configuration switch indication is received from the network corresponding to the BWP switch. In some such embodiments, the configuration switch is performed after a time period X after the BWP switch, wherein the time period X comprises one of: a pre-defined value; a configured value provided to the UE by the network; and a capability value corresponding to a capability of the UE.

In some embodiments, the method 400 further includes receiving the switch list from the network.

In some embodiments, the method 400 further includes receiving a pre-configuration corresponding to a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list from the network.

In some embodiments, the method 400 further includes sending, to the network, capability information indicating one or more UE-supported L1 measurement configuration options.

In some embodiments, the method 400 further includes sending, to the network, assistance information comprising a condition under which a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list may be used at the UE.

In some embodiments of the method 400, the configuration switch indication is received from the network in one of an RRC message, a MAC-CE, and a DCI.

In some embodiments of the the method 400, the plurality of L1 measurement configuration options of the switch list comprises one or more of: performing a CSI-RS measurement within an active BWP; performing an SSB measurement outside of the active BWP without a measurement gap and without an interruption; performing the SSB measurement outside of the active BWP without the measurement gap and with the interruption; performing the SSB measurement outside the active BWP with the measurement gap; and performing a non-cell defining SSB measurement outside the active BWP.

In some embodiments of the method 400, the first L1 measurement corresponds to one of a BM operation, an RLM operation, and a BFD operation.

FIG. 5 illustrates a method 500 of a UE, according to embodiments herein. The method 500 includes performing 502 a first L1 measurement corresponding to a target BWP that is not configured with any SSB that occurs inside of a first active BWP according to a first L1 measurement configuration option from a switch list having a plurality of L1 measurement configuration options. The method 500 further includes sending 504, to a network, a configuration switch indication indicating that the UE will perform a configuration switch from the first L1 measurement configuration option to a second L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list. The method 500 further includes performing 506 the configuration switch in response to the configuration switch indication. The method 500 further includes performing 508 a second L1 measurement corresponding to the target BWP according to the second L1 measurement configuration option.

In some embodiments, the method 500 further includes performing a BWP switch from the first active BWP to a second active BWP; determining that the target BWP is not configured with any SSB that occurs inside of the second active BWP; and identifying the second L1 measurement configuration option based on a position of the second active BWP. In some such embodiments, the configuration switch is performed after a time period X after the BWP switch, wherein the time period X comprises one of: a pre-defined value; a configured value provided to the UE by the network; and a capability value corresponding to a capability of the UE.

In some embodiments, the method 500 further includes receiving the switch list from the network.

In some embodiments, the method 500 further includes receiving a pre-configuration corresponding to a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list from the network.

In some embodiments, the method 500 further includes sending, to the network, capability information indicating one or more UE-supported L1 measurement configuration options.

In some embodiments, the method 500 further includes sending, to the network, assistance information comprising a condition under which a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list may be used at the UE.

In some embodiments, the method 500 further includes receiving, from the network, an indication that the UE is allowed to switch among the plurality of L1 measurement configuration options of the switch list.

In some embodiments of the method 500, the configuration switch indication is sent to the network in one of an RRC message, a MAC-CE, and an UCI.

In some embodiments of the method 500, the plurality of L1 measurement configuration options of the switch list comprises one or more of: performing a CSI-RS measurement within an active BWP; performing an SSB measurement outside of the active BWP without a measurement gap and without an interruption; performing the SSB measurement outside of the active BWP without the measurement gap and with the interruption; performing the SSB measurement outside the active BWP with the measurement gap; and performing a non-cell defining SSB measurement outside the active BWP.

In some embodiments, the method 500 further includes the first L1 measurement corresponds to one of a BM operation, an RLM operation, and a BFD operation.

FIG. 6 illustrates a method 600 of a RAN, according to embodiments herein. The method 600 includes identifying 602 that a BWP switch from a first active BWP to a second active BWP has occurred at a UE that is configured to use a first L1 measurement configuration option of a plurality of L1 measurement configuration options of a switch list to perform an L1 measurement corresponding to a target BWP that is not configured with any SSB that occurs inside the first active BWP. The method 600 further includes identifying 604 that the target BWP is not configured with any SSB that occurs inside the second active BWP. The method 600 further includes identifying 606 a second L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list based on a position of the second active BWP. The method 600 further includes sending 608, to the UE, a configuration switch indication indicating to the UE to perform a configuration switch from the first L1 measurement configuration option to the second L1 measurement configuration option.

In some embodiments, the method 600 further includes sending the switch list to the UE.

In some embodiments, the method 600 further includes sending a pre-configuration corresponding to a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list to the UE.

In some embodiments, the method 600 further includes receiving, from the UE, capability information indicating one or more UE-supported L1 measurement configuration options.

In some embodiments, the method 600 further includes receiving, from the UE, assistance information comprising a condition under which a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list may be used at the UE; wherein the second L1 measurement configuration option is further identified based on the assistance information.

In some embodiments of the method 600, the plurality of L1 measurement configuration options of the switch list comprises one or more of: performing a CSI-RS measurement within an active BWP; performing an SSB measurement outside of the active BWP without a measurement gap and without an interruption; performing the SSB measurement outside of the active BWP without the measurement gap and with the interruption; performing the SSB measurement outside the active BWP with the measurement gap; and performing a non-cell defining SSB measurement outside the active BWP.

In some embodiments of the method 600, the configuration switch indication is sent to the UE in one of an RRC message, a MAC-CE, and a DCI.

FIG. 7 illustrates an example architecture of a wireless communication system 700, according to embodiments disclosed herein. The following description is provided for an example wireless communication system 700 that operates in conjunction with the LTE system standards and/or 5G or NR system standards as provided by 3GPP technical specifications.

As shown by FIG. 7, the wireless communication system 700 includes UE 702 and UE 704 (although any number of UEs may be used) . In this example, the UE 702 and the UE 704 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks) , but may also comprise any mobile or non-mobile computing device configured for wireless communication.

The UE 702 and UE 704 may be configured to communicatively couple with a RAN 706. In embodiments, the RAN 706 may be NG-RAN, E-UTRAN, etc. The UE 702 and UE 704 utilize connections (or channels) (shown as connection 708 and connection 710, respectively) with the RAN 706, each of which comprises a physical communications interface. The RAN 706 can include one or more base stations (such as base station 712 and base station 714) that enable the connection 708 and connection 710.

In this example, the connection 708 and connection 710 are air interfaces to enable such communicative coupling, and may be consistent with RAT (s) used by the RAN 706, such as, for example, an LTE and/or NR.

In some embodiments, the UE 702 and UE 704 may also directly exchange communication data via a sidelink interface 716. The UE 704 is shown to be configured to access an access point (shown as AP 718) via connection 720. By way of example, the connection 720 can comprise a local wireless connection, such as a connection consistent with any IEEE 802.11 protocol, wherein the AP 718 may comprise a router. In this example, the AP 718 may be connected to another network (for example, the Internet) without going through a CN 724.

In embodiments, the UE 702 and UE 704 can be configured to communicate using orthogonal frequency division multiplexing (OFDM) communication signals with each other or with the base station 712 and/or the base station 714 over a multicarrier communication channel in accordance with various communication techniques, such as, but not limited to, an orthogonal frequency division multiple access (OFDMA) communication technique (e.g., for downlink communications) or a single carrier frequency division multiple access (SC-FDMA) communication technique (e.g., for uplink and ProSe or sidelink communications) , although the scope of the embodiments is not limited in this respect. The OFDM signals can comprise a plurality of orthogonal subcarriers.

In some embodiments, all or parts of the base station 712 or base station 714 may be implemented as one or more software entities running on server computers as part of a virtual network. In addition, or in other embodiments, the base station 712 or base station 714 may be configured to communicate with one another via interface 722. In embodiments where the wireless communication system 700 is an LTE system (e.g., when the CN 724 is an EPC) , the interface 722 may be an X2 interface. The X2 interface may be defined between two or more base stations (e.g., two or more eNBs and the like) that connect to an EPC, and/or between two eNBs connecting to the EPC. In embodiments where the wireless communication system 700 is an NR system (e.g., when CN 724 is a 5GC) , the interface 722 may be an Xn interface. The Xn interface is defined between two or more base stations (e.g., two or more gNBs and the like) that connect to 5GC, between a base station 712 (e.g., a gNB) connecting to 5GC and an eNB, and/or between two eNBs connecting to 5GC (e.g., CN 724) .

The RAN 706 is shown to be communicatively coupled to the CN 724. The CN 724 may comprise one or more network elements 726, which are configured to offer various data and telecommunications services to customers/subscribers (e.g., users of UE 702 and UE 704) who are connected to the CN 724 via the RAN 706. The components of the CN 724 may be implemented in one physical device or separate physical devices including components to read and execute instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium) .

In embodiments, the CN 724 may be an EPC, and the RAN 706 may be connected with the CN 724 via an S1 interface 728. In embodiments, the S1 interface 728 may be split into two parts, an S1 user plane (S1-U) interface, which carries traffic data between the base station 712 or base station 714 and a serving gateway (S-GW) , and the S1-MME interface, which is a signaling interface between the base station 712 or base station 714 and mobility management entities (MMEs) .

In embodiments, the CN 724 may be a 5GC, and the RAN 706 may be connected with the CN 724 via an NG interface 728. In embodiments, the NG interface 728 may be split into two parts, an NG user plane (NG-U) interface, which carries traffic data between the base station 712 or base station 714 and a user plane function (UPF) , and the S1 control plane (NG-C) interface, which is a signaling interface between the base station 712 or base station 714 and access and mobility management functions (AMFs) .

Generally, an application server 730 may be an element offering applications that use internet protocol (IP) bearer resources with the CN 724 (e.g., packet switched data services) . The application server 730 can also be configured to support one or more communication services (e.g., VoIP sessions, group communication sessions, etc. ) for the UE 702 and UE 704 via the CN 724. The application server 730 may communicate with the CN 724 through an IP communications interface 732.

FIG. 8 illustrates a system 800 for performing signaling 834 between a wireless device 802 and a network device 818, according to embodiments disclosed herein. The system 800 may be a portion of a wireless communications system as herein described. The wireless device 802 may be, for example, a UE of a wireless communication system. The network device 818 may be, for example, a base station (e.g., an eNB or a gNB) of a wireless communication system.

The wireless device 802 may include one or more processor (s) 804. The processor (s) 804 may execute instructions such that various operations of the wireless device 802 are performed, as described herein. The processor (s) 804 may include one or more baseband processors implemented using, for example, a central processing unit (CPU) , a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

The wireless device 802 may include a memory 806. The memory 806 may be a non-transitory computer-readable storage medium that stores instructions 808 (which may include, for example, the instructions being executed by the processor (s) 804) . The instructions 808 may also be referred to as program code or a computer program. The memory 806 may also store data used by, and results computed by, the processor (s) 804.

The wireless device 802 may include one or more transceiver (s) 810 that may include radio frequency (RF) transmitter and/or receiver circuitry that use the antenna (s) 812 of the wireless device 802 to facilitate signaling (e.g., the signaling 834) to and/or from the wireless device 802 with other devices (e.g., the network device 818) according to corresponding RATs.

The wireless device 802 may include one or more antenna (s) 812 (e.g., one, two, four, or more) . For embodiments with multiple antenna (s) 812, the wireless device 802 may leverage the spatial diversity of such multiple antenna (s) 812 to send and/or receive multiple different data streams on the same time and frequency resources. This behavior may be referred to as, for example, multiple input multiple output (MIMO) behavior (referring to the multiple antennas used at each of a transmitting device and a receiving device that enable this aspect) . MIMO transmissions by the wireless device 802 may be accomplished according to precoding (or digital beamforming) that is applied at the wireless device 802 that multiplexes the data streams across the antenna (s) 812 according to known or assumed channel characteristics such that each data stream is received with an appropriate signal strength relative to other streams and at a desired location in the spatial domain (e.g., the location of a receiver associated with that data stream) . Certain embodiments may use single user MIMO (SU-MIMO) methods (where the data streams are all directed to a single receiver) and/or multi user MIMO (MU-MIMO) methods (where individual data streams may be directed to individual (different) receivers in different locations in the spatial domain) .

In certain embodiments having multiple antennas, the wireless device 802 may implement analog beamforming techniques, whereby phases of the signals sent by the antenna (s) 812 are relatively adjusted such that the (joint) transmission of the antenna (s) 812 can be directed (this is sometimes referred to as beam steering) .

The wireless device 802 may include one or more interface (s) 814. The interface (s) 814 may be used to provide input to or output from the wireless device 802. For example, a wireless device 802 that is a UE may include interface (s) 814 such as microphones, speakers, a touchscreen, buttons, and the like in order to allow for input and/or output to the UE by a user of the UE. Other interfaces of such a UE may be made up of transmitters, receivers, and other circuitry (e.g., other than the transceiver (s) 810/antenna (s) 812 already described) that allow for communication between the UE and other devices and may operate according to known protocols (e.g., and the like) .

The wireless device 802 may include an L1 measurement configuration switch module 816. The L1 measurement configuration switch module 816 may be implemented via hardware, software, or combinations thereof. For example, the L1 measurement configuration switch module 816 may be implemented as a processor, circuit, and/or instructions 808 stored in the memory 806 and executed by the processor (s) 804. In some examples, the L1 measurement configuration switch module 816 may be integrated within the processor (s) 804 and/or the transceiver (s) 810. For example, the L1 measurement configuration switch module 816 may be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the processor (s) 804 or the transceiver (s) 810.

The L1 measurement configuration switch module 816 may be used for various aspects of the present disclosure, for example, aspects of FIG. 2 through FIG. 6. The L1 measurement configuration switch module 816 may be configured to for example, provide capability information and/or assistance information to a network, receive a switch list from the network, receive pre-configurations corresponding to L1 measurement configuration options of the switch list from the network, receive a configuration switch indication from the network, send a configuration switch indication to the network, perform a configuration switch, and perform one or more L1 measurements corresponding to one or more L1 measurement configuration options of a switch list, in the manners described herein.

The network device 818 may include one or more processor (s) 820. The processor (s) 820 may execute instructions such that various operations of the network device 818 are performed, as described herein. The processor (s) 820 may include one or more baseband processors implemented using, for example, a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

The network device 818 may include a memory 822. The memory 822 may be a non-transitory computer-readable storage medium that stores instructions 824 (which may include, for example, the instructions being executed by the processor (s) 820) . The instructions 824 may also be referred to as program code or a computer program. The memory 822 may also store data used by, and results computed by, the processor (s) 820.

The network device 818 may include one or more transceiver (s) 826 that may include RF transmitter and/or receiver circuitry that use the antenna (s) 828 of the network device 818 to facilitate signaling (e.g., the signaling 834) to and/or from the network device 818 with other devices (e.g., the wireless device 802) according to corresponding RATs.

The network device 818 may include one or more antenna (s) 828 (e.g., one, two, four, or more) . In embodiments having multiple antenna (s) 828, the network device 818 may perform MIMO, digital beamforming, analog beamforming, beam steering, etc., as has been described.

The network device 818 may include one or more interface (s) 830. The interface (s) 830 may be used to provide input to or output from the network device 818. For example, a network device 818 that is a base station may include interface (s) 830 made up of transmitters, receivers, and other circuitry (e.g., other than the transceiver (s) 826/antenna (s) 828 already described) that enables the base station to communicate with other equipment in a core network, and/or that enables the base station to communicate with external networks, computers, databases, and the like for purposes of operations, administration, and maintenance of the base station or other equipment operably connected thereto.

The network device 818 may include an L1 measurement configuration switch module 832. The L1 measurement configuration switch module 832 may be implemented via hardware, software, or combinations thereof. For example, the L1 measurement configuration switch module 832 may be implemented as a processor, circuit, and/or instructions 824 stored in the memory 822 and executed by the processor (s) 820. In some examples, the L1 measurement configuration switch module 832 may be integrated within the processor (s) 820 and/or the transceiver (s) 826. For example, the L1 measurement configuration switch module 832 may be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the processor (s) 820 or the transceiver (s) 826.

The L1 measurement configuration switch module 832 may be used for various aspects of the present disclosure, for example, aspects of FIG. 2 through FIG. 6. The L1 measurement configuration switch module 832 may be configured to, for example, receive capability information and/or assistance information from a UE, send a switch list to the UE, send pre-configurations corresponding to L1 measurement configuration options of the switch list to the UE, send a configuration switch indication to the UE, receive a configuration switch indication from the UE, etc., in the manners described herein.

Embodiments contemplated herein include an apparatus comprising means to perform one or more elements of any of the method 400 and the method 500. This apparatus may be, for example, an apparatus of a UE (such as a wireless device 802 that is a UE, as described herein) .

Embodiments contemplated herein include one or more non-transitory computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of any of the method 400 and the method 500. This non-transitory computer-readable media may be, for example, a memory of a UE (such as a memory 806 of a wireless device 802 that is a UE, as described herein) .

Embodiments contemplated herein include an apparatus comprising logic, modules, or circuitry to perform one or more elements of any of the method 400 and the method 500. This apparatus may be, for example, an apparatus of a UE (such as a wireless device 802 that is a UE, as described herein) .

Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of any of the method 400 and the method 500. This apparatus may be, for example, an apparatus of a UE (such as a wireless device 802 that is a UE, as described herein) .

Embodiments contemplated herein include a signal as described in or related to one or more elements of any of the method 400 and the method 500.

Embodiments contemplated herein include a computer program or computer program product comprising instructions, wherein execution of the program by a processor is to cause the processor to carry out one or more elements of any of the method 400 and the method 500. The processor may be a processor of a UE (such as a processor (s) 804 of a wireless device 802 that is a UE, as described herein) . These instructions may be, for example, located in the processor and/or on a memory of the UE (such as a memory 806 of a wireless device 802 that is a UE, as described herein) .

Embodiments contemplated herein include an apparatus comprising means to perform one or more elements of the method 600. This apparatus may be, for example, an apparatus of a base station (such as a network device 818 that is a base station, as described herein) .

Embodiments contemplated herein include one or more non-transitory computer-readable media comprising instructions to cause an electronic device, upon execution of the instructions by one or more processors of the electronic device, to perform one or more elements of the method 600. This non-transitory computer-readable media may be, for example, a memory of a base station (such as a memory 822 of a network device 818 that is a base station, as described herein) .

Embodiments contemplated herein include an apparatus comprising logic, modules, or circuitry to perform one or more elements of the method 600. This apparatus may be, for example, an apparatus of a base station (such as a network device 818 that is a base station, as described herein) .

Embodiments contemplated herein include an apparatus comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of the method 600. This apparatus may be, for example, an apparatus of a base station (such as a network device 818 that is a base station, as described herein) .

Embodiments contemplated herein include a signal as described in or related to one or more elements of the method 600.

Embodiments contemplated herein include a computer program or computer program product comprising instructions, wherein execution of the program by a processing element is to cause the processing element to carry out one or more elements of the method 600. The processor may be a processor of a base station (such as a processor (s) 820 of a network device 818 that is a base station, as described herein) . These instructions may be, for example, located in the processor and/or on a memory of the base station (such as a memory 822 of a network device 818 that is a base station, as described herein) .

For one or more embodiments, at least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and/or methods as set forth herein. For example, a baseband processor as described herein in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth herein. For another example, circuitry associated with a UE, base station, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth herein.

Any of the above described embodiments may be combined with any other embodiment (or combination of embodiments) , unless explicitly stated otherwise. The foregoing description of one or more implementations provides illustration and description, but is not intended to be exhaustive or to limit the scope of embodiments to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of various embodiments.

Embodiments and implementations of the systems and methods described herein may include various operations, which may be embodied in machine-executable instructions to be executed by a computer system. A computer system may include one or more general-purpose or special-purpose computers (or other electronic devices) . The computer system may include hardware components that include specific logic for performing the operations or may include a combination of hardware, software, and/or firmware.

It should be recognized that the systems described herein include descriptions of specific embodiments. These embodiments can be combined into single systems, partially combined into other systems, split into multiple systems or divided or combined in other ways. In addition, it is contemplated that parameters, attributes, aspects, etc. of one embodiment can be used in another embodiment. The parameters, attributes, aspects, etc. are merely described in one or more embodiments for clarity, and it is recognized that the parameters, attributes, aspects, etc. can be combined with or substituted for parameters, attributes, aspects, etc. of another embodiment unless specifically disclaimed herein.

It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.

Although the foregoing has been described in some detail for purposes of clarity, it will be apparent that certain changes and modifications may be made without departing from the principles thereof. It should be noted that there are many alternative ways of implementing both the processes and apparatuses described herein. Accordingly, the present embodiments are to be considered illustrative and not restrictive, and the description is not to be limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.

Claims

A method of a user equipment (UE) , comprising:

performing a first layer 1 (L1) measurement corresponding to a target bandwidth part (BWP) that is not configured with any synchronization signal block (SSB) that occurs inside of a first active BWP according to a first L1 measurement configuration option from a switch list having a plurality of L1 measurement configuration options;

receiving, from a network, a configuration switch indication indicating to the UE to perform a configuration switch from the first L1 measurement configuration option to a second L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list;

performing the configuration switch in response to the configuration switch indication; and

performing a second L1 measurement corresponding to the target BWP according to the second L1 measurement configuration option.
The method of claim 1, further comprising performing a BWP switch from the first active BWP to a second active BWP, wherein the target BWP is not configured with any SSB that occurs inside of the second active BWP, and wherein the configuration switch indication is received from the network corresponding to the BWP switch.
The method of claim 2, wherein the configuration switch is performed after a time period X after the BWP switch, wherein the time period X comprises one of:

a pre-defined value;

a configured value provided to the UE by the network; and

a capability value corresponding to a capability of the UE.
The method of claim 1, further comprising receiving the switch list from the network.
The method of claim 1, further comprising receiving a pre-configuration corresponding to a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list from the network.
The method of claim 1, further comprising sending, to the network, capability information indicating one or more UE-supported L1 measurement configuration options.
The method of claim 1, further comprising sending, to the network, assistance information comprising a condition under which a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list may be used at the UE.
The method of claim 1, wherein the configuration switch indication is received from the network in one of a radio resource control (RRC) message, a medium access control control element (MAC-CE) , and a downlink control information (DCI) .
The method of claim 1, wherein the plurality of L1 measurement configuration options of the switch list comprises one or more of:

performing a channel state information reference signal (CSI-RS) measurement within an active BWP;

performing an SSB measurement outside of the active BWP without a measurement gap and without an interruption;

performing the SSB measurement outside of the active BWP without the measurement gap and with the interruption;

performing the SSB measurement outside the active BWP with the measurement gap; and

performing a non-cell defining SSB measurement outside the active BWP.
The method of claim 1, wherein the first L1 measurement corresponds to one of a beam management (BM) operation, a radio link management (RLM) operation, and a beam failure detection (BFD) operation.
A method of a user equipment (UE) , comprising:

performing a first layer 1 (L1) measurement corresponding to a target bandwidth part (BWP) that is not configured with any synchronization signal block (SSB) that occurs inside of a first active BWP according to a first L1 measurement configuration option from a switch list having a plurality of L1 measurement configuration options;

sending, to a network, a configuration switch indication indicating that the UE will perform a configuration switch from the first L1 measurement configuration option to a second L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list;

performing the configuration switch in response to the configuration switch indication; and

performing a second L1 measurement corresponding to the target BWP according to the second L1 measurement configuration option.
The method of claim 11, further comprising:

performing a BWP switch from the first active BWP to a second active BWP;

determining that the target BWP is not configured with any SSB that occurs inside of the second active BWP; and

identifying the second L1 measurement configuration option based on a position of the second active BWP.
The method of claim 12, wherein the configuration switch is performed after a time period X after the BWP switch, wherein the time period X comprises one of:

a pre-defined value;

a configured value provided to the UE by the network; and

a capability value corresponding to a capability of the UE.
The method of claim 11, further comprising receiving the switch list from the network.
The method of claim 11, further comprising receiving a pre-configuration corresponding to a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list from the network.
The method of claim 11, further comprising sending, to the network, capability information indicating one or more UE-supported L1 measurement configuration options.
The method of claim 11, further comprising sending, to the network, assistance information comprising a condition under which a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list may be used at the UE.
The method of claim 11, further comprising receiving, from the network, an indication that the UE is allowed to switch among the plurality of L1 measurement configuration options of the switch list.
The method of claim 11, wherein the configuration switch indication is sent to the network in one of a radio resource control (RRC) message, a medium access control control element (MAC-CE) , and an uplink control information (UCI) .
The method of claim 11, wherein the plurality of L1 measurement configuration options of the switch list comprises one or more of:

performing a channel state information reference signal (CSI-RS) measurement within an active BWP;

performing an SSB measurement outside of the active BWP without a measurement gap and without an interruption;

performing the SSB measurement outside of the active BWP without the measurement gap and with the interruption;

performing the SSB measurement outside the active BWP with the measurement gap; and

performing a non-cell defining SSB measurement outside the active BWP.
The method of claim 11, wherein the first L1 measurement corresponds to one of a beam management (BM) operation, a radio link management (RLM) operation, and a beam failure detection (BFD) operation.
A method of a radio access network (RAN) , comprising:

identifying that a bandwidth part (BWP) switch from a first active BWP to a second active BWP has occurred at a user equipment (UE) that is configured to use a first layer 1 (L1) measurement configuration option of a plurality of L1 measurement configuration options of a switch list to perform an L1 measurement corresponding to a target BWP that is not configured with any synchronization signal block (SSB) that occurs inside the first active BWP;

identifying that the target BWP is not configured with any SSB that occurs inside the second active BWP;

identifying a second L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list based on a position of the second active BWP; and

sending, to the UE, a configuration switch indication indicating to the UE to perform a configuration switch from the first L1 measurement configuration option to the second L1 measurement configuration option.
The method of claim 22, further comprising sending the switch list to the UE.
The method of claim 22, further comprising sending a pre-configuration corresponding to a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list to the UE.
The method of claim 22, further comprising receiving, from the UE, capability information indicating one or more UE-supported L1 measurement configuration options.
The method of claim 22, further comprising receiving, from the UE, assistance information comprising a condition under which a first L1 measurement configuration option of the plurality of L1 measurement configuration options of the switch list may be used at the UE;

wherein the second L1 measurement configuration option is further identified based on the assistance information.
The method of claim 22, wherein the plurality of L1 measurement configuration options of the switch list comprises one or more of:

performing a channel state information reference signal (CSI-RS) measurement within an active BWP;

performing an SSB measurement outside of the active BWP without a measurement gap and without an interruption;

performing the SSB measurement outside of the active BWP without the measurement gap and with the interruption;

performing the SSB measurement outside the active BWP with the measurement gap; and

performing a non-cell defining SSB measurement outside the active BWP.
The method of claim 22, wherein the configuration switch indication is sent to the UE in one of a radio resource control (RRC) message, a medium access control control element (MAC-CE) , and a downlink control information (DCI) .