CONTROL MECHANISMS FOR BANDWIDTH PART SWITCHING FOR MULTIPLE SUBSCRIBERS

Methods, systems, and devices for wireless communications are described. In some aspects, a user equipment (UE) may be configured with multiple bandwidth parts (BWPs) and may support multiple subscriber identification modules (SIMs) (e.g., may operate in a multi-SIM (MSIM) mode). The UE may tune away from a default data SIM (DDS) subscription for a tune away gap and may miss any downlink signaling, such as an indication of a BWP switch, for a duration of the tune away. To avoid latency resulting from such missed downlink signaling, the UE may support a mechanism according to which the UE may autonomously switch to a different BWP despite a missed command from a network entity. Such a mechanism may include transmission of a scheduling request (SR) on each of multiple BWPs configured for the UE and monitoring each of the multiple BWPs for signaling responsive to the SR.

FIELD OF TECHNOLOGY

The following relates to wireless communications, including control mechanisms for bandwidth part (BWP) switching for multiple subscribers.

BACKGROUND

SUMMARY

The described techniques relate to improved methods, systems, devices, and apparatuses that support control mechanisms for bandwidth part (BWP) switching for multiple subscribers. For example, the described techniques enable a user equipment (UE) that supports multiple subscriber identification modules (SIMS) to determine a BWP to use for communication with a network device after a tune away gap during which the UE tunes away from a first subscription (e.g., a default data SIM (DDS) subscription) to a second subscription (e.g., a non-DDS (nDDS) subscription). For example, the UE may tune away from a first subscription to a second subscription and operate using the second subscription for a given time interval (e.g., a tune away gap). During the tune away gap, the network entity may transmit downlink signaling, such as downlink control information (DCI), to the UE which indicates a switch from a first BWP (e.g., a currently active BWP) to a second BWP for the first subscription. As the UE is operating using the second subscription during the tune away gap, the UE may be unable to receive the DCI. After the tune away gap, the UE may tune from the second subscription to the first subscription and transmit a scheduling request (SR) to the network entity on one or more BWPs (e.g., including the second BWP) other than the first BWP. The UE may monitor each of the one or more BWPs to determine which is the active BWP for the first subscription. For instance, the network entity may transmit a response to the SR on the second BWP, which is the active BWP after the DCI indicating the switch, to the UE and based on the response, the UE may determine to use the second BWP for communicating with the network entity after the tune away gap using the first subscription.

A method for wireless communication at a UE is described. The method may include communicating with a network entity on a first BWP using a first subscription of the UE, communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription, transmitting, to the network entity using the first subscription, an SR on each of multiple BWPs configured for the UE after the tune away gap, and receiving, from the network entity, a resource grant on a second BWP based on transmitting the SR on each of the multiple BWPs configured for the UE.

An apparatus for wireless communication at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to communicate with a network entity on a first BWP using a first subscription of the UE, communicate with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription, transmit, to the network entity using the first subscription, an SR on each of multiple BWPs configured for the UE after the tune away gap, and receive, from the network entity, a resource grant on a second BWP based on transmitting the SR on each of the multiple BWPs configured for the UE.

Another apparatus for wireless communication at a UE is described. The apparatus may include means for communicating with a network entity on a first BWP using a first subscription of the UE, means for communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription, means for transmitting, to the network entity using the first subscription, an SR on each of multiple BWPs configured for the UE after the tune away gap, and means for receiving, from the network entity, a resource grant on a second BWP based on transmitting the SR on each of the multiple BWPs configured for the UE.

A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to communicate with a network entity on a first BWP using a first subscription of the UE, communicate with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription, transmit, to the network entity using the first subscription, an SR on each of multiple BWPs configured for the UE after the tune away gap, and receive, from the network entity, a resource grant on a second BWP based on transmitting the SR on each of the multiple BWPs configured for the UE.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the SR on each of the multiple BWPs configured for the UE may include operations, features, means, or instructions for transmitting a first set of one or more SRs on the first BWP after the tune away gap and transmitting a second SR on the second BWP after the tune away gap based on a condition being satisfied.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the condition may be satisfied based on a failure to receive one or more resource grants from the network entity on the first BWP responsive to the first set of one or more SRs for a threshold quantity of slots.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining the threshold quantity of slots based on a decoding history of the UE, the decoding history associated with a success rate of previous decoding attempts by the UE using the first subscription.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining the threshold quantity of slots based on a scheduling rate of the UE, the scheduling rate associated with a percentage of previous slots during which the UE may be scheduled for communication with the network entity using the first subscription.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for starting a timer for restricting SR transmissions based on one of the first set of one or more SRs and transmitting the second SR on the second BWP during an earliest available SR occasion of the second BWP that may be before an expiration of the timer, where the condition may be satisfied before the expiration of the timer.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for monitoring for the resource grant from the network entity on each of the multiple BWPs on which the UE transmits the SR, where receiving the resource grant on the second BWP may be based on monitoring for the resource grant on each of the multiple BWPs.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the network entity, one or more control messages that indicate a set of BWPs that may be available to the UE for communication with the network entity and that indicate a set of control resources for each BWP of the set of BWPs, the set of BWPs including at least the first BWP and the second BWP, where transmitting the SR on each of the multiple BWPs may be based on receiving the one or more control messages that indicate the set of BWPs that may be available to the UE and the set of control resources for each BWP of the set of BWPs.

In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, for each BWP of the set of BWPs that may be available to the UE, the UE transmits the SR on a respective BWP using a respective set of control resources and monitors for the resource grant from the network entity on that BWP sequentially.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for releasing a set of radio frequency resources associated with the first subscription for a duration of the tune away gap from the first subscription, where transmitting the SR on each of the multiple BWPs may be based on releasing the set of radio frequency resources associated with the first subscription for the duration of the tune away gap.

Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the network entity on the second BWP using the first subscription, an uplink message based on receiving the resource grant on the second BWP.

DETAILED DESCRIPTION

In some wireless communications systems, a user equipment (UE) may support multiple subscriber identification modules (SIMs) and may operate in a multi-SIM (MSIM) mode. Each SIM supported by the UE may be associated with a respective subscription and at least one SIM may be associated with or otherwise referred to as a default data SIM (DDS) subscription. In the context of such an MSIM mode and in scenarios in which the DDS is usable for communication with a network entity (e.g., a New Radio (NR) network entity), the UE may switch from a DDS subscription to another subscription during a tune away gap and, during such a tune away gap, the UE may be unable to transmit or receive communications associated with the DDS subscription (e.g., the NR subscription). As such, the UE may be unable to receive downlink signaling within the tune away gap using the DDS subscription and, accordingly, may be unaware of the content or information included in such downlink signaling. For example, if a network entity transmits downlink control information (DCI) indicating a switch from a first bandwidth part (BWP) to a second BWP for the DDS subscription during the tune away gap, the UE may fail to receive the DCI and may be unaware of any the switch from the first BWP to the second BWP for the DDS subscription. Similar issues may arise for the non-DDS subscription when the UE switches from the non-DDS subscription to the DDS subscription and the UE does not receive message for the non-DDS subscription while operating using the DDS subscription during the tune away gap.

In some implementations, a UE, which is configured with multiple BWPs and supports an MSIM mode, may support a signaling mechanism that enables the UE to switch to a different BWP or identify the active BWP for a first subscription in cases where the UE does not receive (e.g., misses) a command indicating the switch to the active BWP from a network entity. For example, after resuming operation or resuming monitoring of the DDS subscription (e.g., after resuming from a tune away gap), the UE may perform one or more uplink scheduling request (SR) transmissions on each of one or more other BWPs that are configured for the UE (e.g., including the second BWP). The uplink SR transmission may be performed after a threshold time period during which the UE fails to receive scheduling information from the network entity (e.g., scheduling information is not received on the previously active BWP for the first subscription or in response to an SR transmitted by the UE on the first subscription). In some aspects, the UE may perform an uplink SR transmission on each of the one or more other BWPs that are configured for the UE on a respective first available SR occasion associated with that BWP and may monitor for any downlink signaling from the network entity responsive to the SR transmission on that BWP. In accordance with the switch to the second BWP and the SR transmissions from the UE on each of potentially multiple BWPs, the network entity may receive an SR transmission from the UE on the second BWP (e.g., the active BWP from the perspective of the network entity) and may respond with an uplink grant on the second BWP. The UE may receive the uplink grant on the second BWP and may detect or otherwise determine that a BWP switch occurred during the tune away gap and that the second BWP is the active BWP for the first subscription. The UE may continue to communicate with the network entity using the second BWP and the first subscription.

Particular implementations of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. For example, in accordance with autonomously switching to a different BWP despite a missed command from the network entity, the UE may achieve higher performance and more seamlessly perform an uplink data transfer after the tune away gap. Further, in implementations in which the UE transmits SRs on each of the other BWPs (e.g., outside of the first BWP that was initially the active BWP) configured for the UE together, the UE may expedite resuming operation on the active BWP. Accordingly, the UE and the network entity may experience higher reliability, which may support higher data rates, greater system capacity, and greater spectral efficiency, among other benefits.

Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are additionally illustrated by and described with reference to a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to control mechanisms for BWP switching for multiple subscribers.

In some systems, such as the wireless communications system100, a UE115may support multiple SIMS and may operate in an MSIM mode. Each SIM supported by the UE115may be associated with a respective subscription and at least one SIM may be associated with or otherwise referred to as a DDS subscription. In the context of such an MSIM mode and in scenarios in which the DDS subscription is usable for communication with a network entity105(e.g., an NR network entity), the UE115may initiate a tune away gap for operating using another subscription and, during such a tune away gap, the UE115may be unable to transmit or receive communications associated with the DDS subscription (e.g., the NR subscription). As such, the UE115may be unable to communicate messages within the tune away gap using the DDS subscription and, accordingly, may be unaware of any instructions that may be sent (e.g., via downlink signaling) to the UE. For example, if a network entity105transmits DCI indicating a switch from a first BWP to a second BWP for the DDS subscription during the tune away gap, the UE115may fail to receive the DCI and, accordingly, may be unaware of any instruction to switch to the second BWP when the UE115transitions back to the first subscription.

In some implementations, the UE115(e.g., a UE115configured with multiple BWPs and in an MSIM mode) may support a signaling mechanism according to which the UE115is able to autonomously switch to a different BWP despite a missed command from a network entity105. For example, after resuming operation or resuming monitoring of the DDS subscription (e.g., after resuming from the tune away gap) and after a threshold time period during which the UE115fails to receive scheduling information from the network entity105, the UE115may perform one or more uplink SR transmissions on each of one or more other BWPs that are configured for the UE115(e.g., including the second BWP). In some aspects, the UE115may perform an uplink SR transmission on each of the one or more other BWPs that are configured for the UE115on a respective first available SR occasion associated with that BWP and may monitor for any downlink signaling from the network entity105responsive to the SR transmission on that BWP. For example, in scenarios in which the UE115is configured with the first BWP, the second BWP, and a third BWP, the UE115may transmit one or more SRs on the second BWP and the third BWP and may monitor for any responsive signaling from the network entity105on the second BWP and the third BWP accordingly.

In accordance with the switch from the first BWP to the second BWP and the SR transmissions from the UE115on each of potentially multiple BWPs, the network entity105may receive an SR transmission from the UE115on the second BWP (e.g., the active BWP from the perspective of the network entity105) and may respond with an uplink grant on the second BWP. The UE115may receive the uplink grant on the second BWP and may detect or otherwise assume that a BWP switch occurred during the tune away gap accordingly. As such, the UE115may assume that the second BWP is a correct BWP for the UE115and may continue to communicate with the network entity105on the second BWP.

FIG.2shows an example of a wireless communications system200that supports control mechanisms for BWP switching for multiple subscribers in accordance with one or more aspects of the present disclosure. In some examples, the wireless communications system200may implement or be implemented to realize aspects of the wireless communications system100. For example, the wireless communications system200may illustrate communication between a network entity105-aand a UE115-a, which may be examples of corresponding devices as illustrated by and described with reference toFIG.1. The UE115-amay be an example of an MSIM device, such as a dual-SIM device or a dual-subscription device, and may support multiple subscriptions (more than two) in the context of an MSIM mode.

For example, the UE115-amay at least support a first subscription (which may be an example of or otherwise function as a DDS subscription) via a first SIM205and a second subscription (which may be an example of or otherwise function as an nDDS subscription) via a second SIM207. In other words, the first SIM205may provide or support the first subscription and the second SIM207may provide or support a second subscription for the UE115-a. The first subscription and the second subscription may be associated with a same cell or different cells and may be associated with a same radio access technology (RAT) or different RATs. In an example, the first subscription may provide one of an NR subscription, an LTE subscription, a 4G subscription a global system for mobile communications (GSM) subscription, or a wideband code division multiple access (WCDMA) subscription and the second subscription may provide one of an NR subscription, an LTE subscription, a 4G subscription, a GSM subscription, or a WCDMA subscription. Further, the UE115-amay support communications with multiple base stations at a time in accordance with supporting multiple subscriptions and may be configured to support dual-connectivity or other non-standalone communications schemes.

In some aspects, the UE115-amay communicate with the network entity105-avia a communication link250using the first subscription (e.g., an NR subscription). For example, the UE115-amay transmit data or control signaling, or both, to the network entity105-ausing the first subscription and the UE115-amay receive data or control signaling, or both, from the network entity105-ausing the first subscription. In some examples, downlink activity between the network entity105-aand the UE115-amay include one or more actions or messages from the network entity105-afor which the network entity105-amay expect the UE115-ato respond (e.g., for which the UE115-amay be expected to be able to respond). For example, the network entity105-amay configure the UE115-awith multiple BWPs, may transmit a DCI message for a BWP switch to the UE115-a, and may expect the UE115-ato switch BWPs in accordance with the DCI message. For instance, the network entity105-amay configure the UE115-awith a BWP210-a, a BWP210-b, a BWP210-c, and a BWP210-d(e.g., the UE115-acan be configured with up to four BWPs in the downlink with a single downlink BWP being active at a given time). In such examples in which the network entity105-aconfigures the UE115-awith multiple BWPs, the network entity105-amay be able to switch the BWP of the UE115-avia a DCI format 1_1 or a DCI format 0_1 through a BWP indicator field.

Further, the UE115-amay operate in accordance with a full tune-away (non-dual receive) or a hybrid fallback mode. In the example of full tune-away, data traffic from the first subscription may be tuned away to the second subscription in an idle state. For example, in full tune-away mode, NR traffic on the first subscription may lose radio frequency resources to other RAT resources on the second subscription for a duration of activity on the second subscription. The UE115-aor the network entity105-amay invoke the full tune-away or hybrid fallback mode if the other RAT experiences poor paging performance (e.g., when the UE115-adetects a threshold quantity of consecutive page decode failures or a threshold quantity of transceiver resource manager (TRM) denials for page decode). In such cases, the UE115-amay fall back to a tune-away mode to enhance paging performance. Additionally, or alternatively, the full tune-away or hybrid fallback mode may be invoked when the other RAT enters an access or traffic state for a mobile originated or mobile terminated voice call, a mobile originated or mobile terminated messaging on traffic channel, or a location area update (LAU). In some examples, the UE115-aor the network entity105-amay invoke the full tune-away or hybrid fallback mode if a technology enters an acquisition state.

As such, the UE115-amay ‘tune away’ from the first subscription (e.g., the DDS or NR subscription) for a time period for some activity by the second subscription (e.g., the other subscription). Such a time period may be referred to as a tune away gap215and may refer to a time period during which the UE115-aperforms activity (e.g., one or more transmissions or one or more receptions, or any combination thereof) using the second subscription and is unable to transmit or receive using the first subscription. In other words, the UE115-amay open the tune away gap215for some activity by the second subscription and may be unable to perform activity (e.g., transmit or receive, such as decode a physical downlink control channel (PDCCH)) using the first subscription for a duration of the tune away gap215. The network entity105-a, however, may be unaware of a timing or duration of the tune away gap215and there may be downlink or uplink activity that can be performed by the first subscription (e.g., the NR subscription) during the tune away gap215. For example, the network entity105-amay transmit an indication of a BWP switch255to the UE115-avia the first subscription during the tune away gap215.

During such instances in which the network entity105-atransmits an indication of a BWP switch255for the UE115-a(e.g., via a DCI format 1_1 or a DCI format 0_1 for BWP switch) that falls within the tune away gap215, the UE115-amay be unaware of the action set by the network entity105-aand, after resuming operation using the first subscription after the tune away gap215, the UE115-amay search or monitor for communications from the network entity105-aon a BWP that was active for the UE115-abefore the tune away gap215(e.g., the BWP210-b). As such, the UE115-amay still operate and perform downlink decodes or uplink transmissions, or both, on an incorrect BWP (e.g., on a different BWP than what the network entity105-aconfigured to be active via the missed indication of the BWP switch255) and may not expect to receive (e.g., may not list for) communications outside of the BWP210that the UE115-aexpects to be the active BWP210.

Such communications that the UE115-amay not expect to receive outside of the BWP210that the UE115-aexpects is the active BWP may include a physical downlink shared channel (PDSCH) transmission, a PDCCH transmission, or a CSI-RS (except for radio resource management). For example, and as illustrated by the wireless communications system200, the UE115-aand the network entity105-amay both use the BWP210-bas an active BWP for a set of slots225prior to the tune away gap215, but the network entity105-amay transmit a DCI including an indication of a BWP switch255from the BWP210-bto the BWP210-cduring the tune away gap215. As such, after the tune away gap215, the network entity105-amay use the BWP210-cas an active BWP while the UE115-astill expects the BWP210-bto be the active BWP.

As an example, an NR DDS subscription may be in an active data call and may be receiving active downlink or uplink data (e.g., assuming greater than a 50% scheduling rate) and may actively decode a PDCCH for DCI format 1_1 or DCI format 0_1, or both. Tune away gaps215may be prone to happen, however, in which case an NR stack may be relinquished, a radio frequency outage may happen due to a lack of baseband or radio frequency resources during the tune away gap215and post resume from the tune away, and the NR DDS subscription may resume with PDCCH decode after a successful acquisition. If there is no BWP switch command from the network entity105-aduring the tune away gap215, the UE115-amay continue to perform uplink transmissions and resume uplink data activity. In the case in which the network entity105-asends a command for or an indication of a BWP switch255during the tune away gap215(e.g., during which the UE115-awas in a tune away mode), however, the UE115-amay be unaware that any DCI for BWP switch was sent by the network entity105-aand may continue to perform uplink transmissions (and expect downlink transmissions) on the same BWP (e.g., the BWP210-b) as before the tune away gap215.

For example, the UE115-amay use the NR subscription in data call and decodes happening on the BWP210-bbefore tune away, the network entity105-amay send an indication of a BWP switch255and the downlink DCI transmission including the indication of the BWP switch255may fall in the tune away gap215. As such, the UE115-amay be unable to decode the downlink DCI, the network entity105-amay expect the BWP210-cto be the active BWP while the UE115-amay still send SR transmissions on the BWP210-bafter the tune away gap215and perform PDCCH decodes for uplink grants in response to the SR transmissions on the BWP210-b, and the network entity105-amay fail to send any such uplink grants as a result of monitoring the BWP210-cfor communications from the UE115-a. In other words, the network entity105-amay expect communications with the UE115-ato occur on the BWP210-cafter the indication of the BWP switch255. As such, and because the BWP switch occurred from the network side, the UE115-amay not receive any DCI on a PDCCH for uplink grant in response to an SR220that the UE115-asends to the network entity105-aand the UE115-amay assume that no uplink or downlink data is scheduled by the network entity105-a(even as the network entity105-amay be trying to schedule uplink and downlink data for the UE115-aon the BWP210-c). Accordingly, the UE115-aand the network entity105-amay miss data transmissions and eventually experience further delays or radio link control (RLC) throttling, an RLC reset, or a radio link failure (RLF).

In some implementations, the UE115-amay support a procedure which may handle such a situation robustly. In accordance with such a procedure, the UE115-amay send an SR220for an uplink grant on other configured BWPs210after resuming from the tune away gap215. For example, the UE115-amay be aware of information associated with control resources of the other BWPs210that are configured for the UE115-aand after resuming operation on the first subscription from the tune away gap215, the UE115-amay perform an uplink transmission for an SR220on one or more of the other configured BWPs210using such information associated with the control resources of the other BWPs210that are configured for the UE115-a. Such information associated with the control resources of the BWPs210may include control resource set (CORESET) information or search space set information of each of the BWPs210and the UE115-amay transmit an SR220on a given BWP210using resources a CORESET or search space set associated with that given BWP210. In some aspects, the UE115-amay transmit an SR220on one or more of the other BWPs210that are configured for the UE115-aon their respective first available SR-occasions (e.g., without waiting for sr-prohibit timer expiry) and may perform a PDCCH decode attempt on the one or more of the other configured BWPs210respectively.

In some implementations, the UE115-amay trigger the procedure for handling a potentially missed indication of a BWP switch255under specific conditions (e.g., if the UE115-adetermines, identifies, or otherwise ascertains that one or more specific conditions are satisfied). For example, the UE115-amay transmit one or more SRs220on one or more other BWPs210configured for the UE115-aafter a set of slots230. In other words, the UE115-amay begin transmitting SRs220on the one or more other BWPs210after a threshold quantity of slots during which the UE115-afails to communicate with the network entity105-a(e.g., during which the UE115-afails to receive an uplink or downlink grant from the network entity105-aor otherwise fails to successfully communicate in an expected manner with the network entity105-a). The UE115-aset or configure the threshold quantity of slots (e.g., how many slots to wait before pursuing a PDCCH attempt on another BWP210after the tune away gap215) based on a past DCI decode history or a percentage scheduling rate, or both.

For example, the UE115-amay set the threshold quantity of slots to a relatively greater quantity of slots if a past DCI decode history indicates or suggests that the network entity105-atransmits DCI relatively infrequently or indicates that the UE115-arelatively frequently fails DCI decodes. For example, if the DCI decode history indicates that DCI is successfully received in approximately 100% of slots, the UE115-amay set the threshold quantity of slots to one. If the DCI decode history indicates that DCI is successfully received in approximately 50% of slots, the UE115-amay set the threshold quantity of slots to two or, if the DCI decode history indicates that DCI is successfully received in approximately 33% of slots, the UE115-amay set the threshold quantity of slots to three. For further example, if the DCI decode history indicates that DCI is successfully received in approximately 25% of slots, the UE115-amay set the threshold quantity of slots to four, and so on.

Additionally, or alternatively, the UE115-amay set the threshold quantity of slots to a relatively greater quantity of slots if a percentage scheduling rate is relatively low. For example, if the scheduling rate is approximately 100%, the UE115-amay set the threshold quantity of slots to one. If the scheduling rate is approximately 50%, the UE115-amay set the threshold quantity of slots to two or, if the scheduling rate is approximately 33%, the UE115-amay set the threshold quantity of slots to three. For further example, if the scheduling rate is approximately 25%, the UE115-amay set the threshold quantity of slots to four. In either or both examples, the UE115-amay consider a failure to receive an uplink or downlink grant during the initial slots after the tune away gap215as being relatively regular or expected. In some aspects, and as illustrated by the wireless communications system200, the UE115-amay set or configure the threshold quantity of slots to three slots.

Accordingly, the UE115-amay begin transmitting one or more SRs220on other BWPs210after the set of slots230(e.g., the three slots in accordance with the set or configured threshold). In some implementations, and as illustrated by the wireless communications system200, the UE115-amay transmit an SR220to the network entity105-aon the BWP210-aduring a slot235and may monitor for responsive signaling from the network entity105-aon the BWP210-a. During or after monitoring for responsive signaling from the network entity105-aon the BWP210-a, the UE115-amay transmit another SR220to the network entity105-aon the BWP210-cduring a slot240and may monitor for responsive signaling from the network entity105-aon the BWP210-c. In other words, the UE115-amay perform one or more SR transmission attempts for an uplink grant and may perform corresponding PDCCH decodes on each if not all configured BWPs210to detect whether or not a BWP switch occurred during the tune away gap215.

The network entity105-a, which considers the BWP210-cas the active BWP in accordance with the previously transmitted DCI message including the indication of the BWP switch255, may receive an SR220from the UE115-aon the BWP210-cand may transmit downlink control signaling (e.g., an uplink grant on a PDCCH of the BWP210-c) to the UE115-aon the BWP210-caccordingly. The UE115-amay successfully receive the downlink control signaling on the BWP210-cand may autonomously determine that the BWP210-cis the active BWP210and continue communicating with the network entity105-aon the BWP210-cfor a set of slots245accordingly. In other words, the UE115-amay transmit an SR220on multiple BWPs210after the tune away gap215and based on determining that a BWP switch likely occurred and the network entity105-amay send an uplink grant to the UE115-aon one of the BWPs210(e.g., on whichever BWP is active from the perspective of the network entity105-a, such as the BWP210-c). The UE115-amay receive the uplink grant on that one of the BWPs210(e.g., on the BWP210-c) and may detect (e.g., implicitly determine) that a BWP switch has occurred during the tune away gap215. As such, the UE115-amay continue to operate on the target BWP (e.g., the BWP210-c) and may be able to perform an uplink data transfer (e.g., a seamless uplink data transfer) from the BWP210-bto the BWP210-c.

Accordingly, the UE115-amay make a packet switched (PS) call on one NR DDS subscription and open a tune away gap215for a duration, such as a long tune away (LTA) duration. During the tune away gap215the network entity105-a(or another signaling entity, such as any signaling entity that may be used in a test or live deployment setting) may send an indication of a BWP switch (e.g., via a DCI format 1_1 or a DCI format 0_1), and, in accordance with the described techniques, the UE115-amay send one or more SRs220on one or more BWPs210other than a previously active BWP210.

Further, although illustrated and described in the context of a scenario in which the UE115-atransmits an SR220on the BWP210-aduring the slot235and transmits an SR220on the BWP210-cduring the slot240, the UE115-amay additionally, or alternatively, transmit an SR220to the network entity105-aon the BWP210-d. For example, after the expiration of the threshold quantity of slots (e.g., after the set of slots230), the UE115-amay transmit an SR220on the BWP210-aduring a first slot, an SR220on the BWP210-cduring a second slot, or an SR220on the BWP210-dduring a third slot, or any combination thereof.

Additionally, or alternatively, the UE115-amay transmit multiple SRs220on multiple different BWPs210during a same or single slot. For example, the UE115-amay transmit SRs220to the network entity105-aon the BWP210-a, the BWP210-c, the BWP210-d, or any combination thereof, during the slot235(e.g., after the set of slots230associated with the threshold quantity of slots). In such examples, the UE115-amay transmit one or more SRs220on the BWP210-aduring a first set of one or more symbols, may transmit one or more SRs220on the BWP210-cduring a second set of one or more symbols, may transmit one or more SRs220on the BWP210-dduring a third set of one or more symbols, or any combination thereof. In some implementations, the UE115-amay perform an SR transmission attempt for an uplink grant and a corresponding PDCCH decode on all configured BWPs210and try to detect a BWP switch.

FIG.3shows an example of a process flow300that supports control mechanisms for BWP switching for multiple subscribers in accordance with one or more aspects of the present disclosure. The process flow300may implement or be implemented by aspects of the wireless communications system100or the wireless communications system200. For example, the process flow300illustrates communication between a UE115-band a network entity105-b, which may be examples of corresponding devices as illustrated by and described with reference toFIGS.1and2. In some implementations, the UE115-bmay autonomously determine whether the UE115-bpotentially missed a DCI message indicating a BWP switch during a tune away gap (e.g., a tune away gap215) and may support an SR-based signaling mechanism according to which the UE115-amay autonomously switch to a target BWP despite the missed DCI message.

In the following description of the process flow300, the operations may be performed (such as reported or provided) in a different order than the order shown, or the operations performed by the example devices may be performed in different orders or at different times. Some operations also may be left out of the process flow300, or other operations may be added to the process flow300. Further, although some operations or signaling may be shown to occur at different times for discussion purposes, these operations may actually occur at the same time.

At305, the UE115-bmay communicate with the network entity105-bon a first BWP using a first subscription of the UE115-b. For example, the UE115-bmay transmit or receive one or more messages to or from the network entity105-b.

At310, the UE115-bmay open a tune away gap for some activity using the second subscription. For example, the tune away gap may be associated with or otherwise involve a tuning from the first subscription to the second subscription. In some aspects, the UE115-bmay release a set of resources (e.g., a set of radio frequency resources) associated with the first subscription as part of the tune away to the second subscription and, as such, may be unable to communicate with the network entity105-busing the first subscription for a duration of the tune away gap.

At315, the UE115-bmay communicate with the network entity105-busing the second subscription of the UE115-bduring the tune away gap.

At320, the network entity105-bmay transmit, to the UE115-busing the first subscription, an indication of a BWP switch (e.g., via a DCI message) to the UE115-bduring the tune away gap. In some aspects, the indication of the BWP switch may indicate a switch from the first BWP as the active BWP to a second BWP as the active BWP. The UE115-bmay be unable to receive the indication of the BWP switch based on the indication being transmitted during the tune away gap from the first subscription and, accordingly, the UE115-bmay be unaware that the network entity105-bexpects the UE115-bto switch from the first BWP to the second BWP.

At325, the UE115-bmay resume monitoring the first subscription. For example, the UE115-bmay revert to communicating with the network entity105-busing the first subscription after the tune away gap associated with the second subscription.

At330, the UE115-bmay transmit, to the network entity105-busing the first subscription, one or more SRs for an uplink message from the UE115-b. For example, each of the one or more SRs may include a request for an uplink resource over which the UE115-bmay transmit the uplink message to the network entity105-b.

At335, the UE115-bmay determine that a condition is satisfied. In some implementations, the UE115-bmay determine that the condition is satisfied based on a failure to receive, for a threshold quantity of slots, one or more resource grants from the network entity105-bon the first BWP responsive to the one or more SRs that the UE115-btransmitted at330. In some aspects, the threshold quantity of slots may be based on a decoding history of the UE115-b(e.g., a decoding history associated with a success rate of previous decoding attempts by the UE115-busing the first subscription) or a scheduling rate of the UE115-b(e.g., a scheduling rate associated with a percentage of previous slots during which the UE115-bis scheduled for communication with the network entity105-busing the first subscription). In some implementations, the UE115-bmay perform SR transmissions and corresponding PDCCH decode attempts on one or more other BWPs that are configured for the UE115-bbased on determining that the condition is satisfied.

At340, for example, the UE115-bmay switch from the first BWP to the second BWP based on determining that the condition is satisfied.

At345, the UE115-bmay transmit an SR on the second BWP using the first subscription and may monitor the second BWP for a resource grant from the network entity105-bresponsive to the second BWP. In some aspects, the UE115-bmay additionally transmit one or more SRs on one or more other BWPs that are configured for the UE115-b. In some aspects, the UE115-bmay transmit the SR on the second BWP during an earliest available SR occasion of the second BWP, which may be present prior to an expiration of a timer (e.g., an sr-prohibit timer) associated with restricting SR transmissions based on any one of the one or more SRs transmitted at330.

At350, the UE115-bmay receive a resource grant from the network entity105-bon the second BWP using the first subscription based on monitoring for the resource grant on the second BWP. In some implementations, the UE115-bmay determine or assume that the UE115-blikely missed an indication of a BWP switch during the tune away gap based on determining that the condition is satisfies and receiving a resource grant from the network entity105-bon the second BWP (e.g., a BWP that the UE115-bdid not expect to be the active BWP).

At355, the UE115-bmay transmit, to the network entity105-bon the second BWP using the first subscription, an uplink message based on receiving the resource grant on the second BWP. Further, the UE115-bmay continue to communicate with the network entity105-bon the second BWP after determining that the UE115-blikely missed an indication of a BWP switch.

FIG.4shows a block diagram400of a device405that supports control mechanisms for BWP switching for multiple subscribers in accordance with one or more aspects of the present disclosure. The device405may be an example of aspects of a UE115as described herein. The device405may include a receiver410, a transmitter415, and a communications manager420. The device405may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

The transmitter415may provide a means for transmitting signals generated by other components of the device405. For example, the transmitter415may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to control mechanisms for BWP switching for multiple subscribers). In some examples, the transmitter415may be co-located with a receiver410in a transceiver module. The transmitter415may utilize a single antenna or a set of multiple antennas.

The communications manager420, the receiver410, the transmitter415, or various combinations thereof or various components thereof may be examples of means for performing various aspects of control mechanisms for BWP switching for multiple subscribers as described herein. For example, the communications manager420, the receiver410, the transmitter415, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

In some examples, the communications manager420may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver410, the transmitter415, or both. For example, the communications manager420may receive information from the receiver410, send information to the transmitter415, or be integrated in combination with the receiver410, the transmitter415, or both to obtain information, output information, or perform various other operations as described herein.

The communications manager420may support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager420may be configured as or otherwise support a means for communicating with a network entity on a first BWP using a first subscription of the UE. The communications manager420may be configured as or otherwise support a means for communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription. The communications manager420may be configured as or otherwise support a means for transmitting, to the network entity using the first subscription, a scheduling request on each of multiple BWPs configured for the UE after the tune away gap. The communications manager420may be configured as or otherwise support a means for receiving, from the network entity, a resource grant on a second BWP based on transmitting the scheduling request on each of the multiple BWPs configured for the UE.

By including or configuring the communications manager420in accordance with examples as described herein, the device405(e.g., a processor controlling or otherwise coupled with the receiver410, the transmitter415, the communications manager420, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communication resources.

The device505, or various components thereof, may be an example of means for performing various aspects of control mechanisms for BWP switching for multiple subscribers as described herein. For example, the communications manager520may include a subscription component525, an SR transmission component530, a resource grant component535, or any combination thereof. The communications manager520may be an example of aspects of a communications manager420as described herein. In some examples, the communications manager520, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver510, the transmitter515, or both. For example, the communications manager520may receive information from the receiver510, send information to the transmitter515, or be integrated in combination with the receiver510, the transmitter515, or both to obtain information, output information, or perform various other operations as described herein.

The communications manager520may support wireless communication at a UE in accordance with examples as disclosed herein. The subscription component525may be configured as or otherwise support a means for communicating with a network entity on a first BWP using a first subscription of the UE. The subscription component525may be configured as or otherwise support a means for communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription. The SR transmission component530may be configured as or otherwise support a means for transmitting, to the network entity using the first subscription, a scheduling request on each of multiple BWPs configured for the UE after the tune away gap. The resource grant component535may be configured as or otherwise support a means for receiving, from the network entity, a resource grant on a second BWP based on transmitting the scheduling request on each of the multiple BWPs configured for the UE.

FIG.6shows a block diagram600of a communications manager620that supports control mechanisms for BWP switching for multiple subscribers in accordance with one or more aspects of the present disclosure. The communications manager620may be an example of aspects of a communications manager420, a communications manager520, or both, as described herein. The communications manager620, or various components thereof, may be an example of means for performing various aspects of control mechanisms for BWP switching for multiple subscribers as described herein. For example, the communications manager620may include a subscription component625, an SR transmission component630, a resource grant component635, a monitoring component640, a configuration component645, a radio frequency resource component650, a condition satisfaction component655, an SR timing component660, or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses).

The communications manager620may support wireless communication at a UE in accordance with examples as disclosed herein. The subscription component625may be configured as or otherwise support a means for communicating with a network entity on a first BWP using a first subscription of the UE. In some examples, the subscription component625may be configured as or otherwise support a means for communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription. The SR transmission component630may be configured as or otherwise support a means for transmitting, to the network entity using the first subscription, a scheduling request on each of multiple BWPs configured for the UE after the tune away gap. The resource grant component635may be configured as or otherwise support a means for receiving, from the network entity, a resource grant on a second BWP based on transmitting the scheduling request on each of the multiple BWPs configured for the UE.

In some examples, to support transmitting the scheduling request on each of the multiple BWPs configured for the UE, the SR transmission component630may be configured as or otherwise support a means for transmitting a first set of one or more scheduling requests on the first BWP after the tune away gap. In some examples, to support transmitting the scheduling request on each of the multiple BWPs configured for the UE, the SR transmission component630may be configured as or otherwise support a means for transmitting a second scheduling request on the second BWP after the tune away gap based on a condition being satisfied.

In some examples, the condition satisfaction component655may be configured as or otherwise support a means for determining that the condition is satisfied based on a failure to receive one or more resource grants from the network entity on the first BWP responsive to the first set of one or more scheduling requests for a threshold quantity of slots.

In some examples, the condition satisfaction component655may be configured as or otherwise support a means for determining the threshold quantity of slots based on a decoding history of the UE, the decoding history associated with a success rate of previous decoding attempts by the UE using the first subscription.

In some examples, the condition satisfaction component655may be configured as or otherwise support a means for determining the threshold quantity of slots based on a scheduling rate of the UE, the scheduling rate associated with a percentage of previous slots during which the UE is scheduled for communication with the network entity using the first subscription.

In some examples, the SR timing component660may be configured as or otherwise support a means for starting a timer for restricting scheduling request transmissions based on one of the first set of one or more scheduling requests. In some examples, the SR transmission component630may be configured as or otherwise support a means for transmitting the second scheduling request on the second BWP during an earliest available scheduling request occasion of the second BWP that is before an expiration of the timer, where the condition is satisfied before the expiration of the timer.

In some examples, the monitoring component640may be configured as or otherwise support a means for monitoring for the resource grant from the network entity on each of the multiple BWPs on which the UE transmits the scheduling request, where receiving the resource grant on the second BWP is based on monitoring for the resource grant on each of the multiple BWPs.

In some examples, the configuration component645may be configured as or otherwise support a means for receiving, from the network entity, one or more control messages that indicate a set of BWPs that are available to the UE for communication with the network entity and that indicate a set of control resources for each BWP of the set of BWPs, the set of BWPs including at least the first BWP and the second BWP, where transmitting the scheduling request on each of the multiple BWPs is based on receiving the one or more control messages that indicate the set of BWPs that are available to the UE and the set of control resources for each BWP of the set of BWPs.

In some examples, for each BWP of the set of BWPs that are available to the UE, the UE transmits the scheduling request on a respective BWP using a respective set of control resources and monitors for the resource grant from the network entity on that BWP sequentially.

In some examples, the radio frequency resource component650may be configured as or otherwise support a means for releasing a set of radio frequency resources associated with the first subscription for a duration of the tune away gap from the first subscription, where transmitting the scheduling request on each of the multiple BWPs is based on releasing the set of radio frequency resources associated with the first subscription for the duration of the tune away gap.

In some examples, the subscription component625may be configured as or otherwise support a means for transmitting, to the network entity on the second BWP using the first subscription, an uplink message based on receiving the resource grant on the second BWP.

FIG.7shows a diagram of a system700including a device705that supports control mechanisms for BWP switching for multiple subscribers in accordance with one or more aspects of the present disclosure. The device705may be an example of or include the components of a device405, a device505, or a UE115as described herein. The device705may communicate (e.g., wirelessly) with one or more network entities105, one or more UEs115, or any combination thereof. The device705may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager720, an input/output (I/O) controller710, a transceiver715, an antenna725, a memory730, code735, and a processor740. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus745).

The I/O controller710may manage input and output signals for the device705. The I/O controller710may also manage peripherals not integrated into the device705. In some cases, the I/O controller710may represent a physical connection or port to an external peripheral. In some cases, the I/O controller710may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. Additionally, or alternatively, the I/O controller710may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller710may be implemented as part of a processor, such as the processor740. In some cases, a user may interact with the device705via the I/O controller710or via hardware components controlled by the I/O controller710.

In some cases, the device705may include a single antenna725. However, in some other cases, the device705may have more than one antenna725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver715may communicate bi-directionally, via the one or more antennas725, wired, or wireless links as described herein. For example, the transceiver715may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver715may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas725for transmission, and to demodulate packets received from the one or more antennas725. The transceiver715, or the transceiver715and one or more antennas725, may be an example of a transmitter415, a transmitter515, a receiver410, a receiver510, or any combination thereof or component thereof, as described herein.

The memory730may include random access memory (RAM) and read-only memory (ROM). The memory730may store computer-readable, computer-executable code735including instructions that, when executed by the processor740, cause the device705to perform various functions described herein. The code735may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code735may not be directly executable by the processor740but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory730may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.

The processor740may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor740may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor740. The processor740may be configured to execute computer-readable instructions stored in a memory (e.g., the memory730) to cause the device705to perform various functions (e.g., functions or tasks supporting control mechanisms for BWP switching for multiple subscribers). For example, the device705or a component of the device705may include a processor740and memory730coupled with or to the processor740, the processor740and memory730configured to perform various functions described herein.

The communications manager720may support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager720may be configured as or otherwise support a means for communicating with a network entity on a first BWP using a first subscription of the UE. The communications manager720may be configured as or otherwise support a means for communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription. The communications manager720may be configured as or otherwise support a means for transmitting, to the network entity using the first subscription, a scheduling request on each of multiple BWPs configured for the UE after the tune away gap. The communications manager720may be configured as or otherwise support a means for receiving, from the network entity, a resource grant on a second BWP based on transmitting the scheduling request on each of the multiple BWPs configured for the UE.

By including or configuring the communications manager720in accordance with examples as described herein, the device705may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, and improved utilization of processing capability.

In some examples, the communications manager720may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver715, the one or more antennas725, or any combination thereof. Although the communications manager720is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager720may be supported by or performed by the processor740, the memory730, the code735, or any combination thereof. For example, the code735may include instructions executable by the processor740to cause the device705to perform various aspects of control mechanisms for BWP switching for multiple subscribers as described herein, or the processor740and the memory730may be otherwise configured to perform or support such operations.

FIG.8shows a flowchart illustrating a method800that supports control mechanisms for BWP switching for multiple subscribers in accordance with one or more aspects of the present disclosure. The operations of the method800may be implemented by a UE or its components as described herein. For example, the operations of the method800may be performed by a UE115as described with reference toFIGS.1through7. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.

At805, the method may include communicating with a network entity on a first BWP using a first subscription of the UE. The operations of805may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of805may be performed by a subscription component625as described with reference toFIG.6.

At810, the method may include communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription. The operations of810may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of810may be performed by a subscription component625as described with reference toFIG.6.

At815, the method may include transmitting, to the network entity using the first subscription, a scheduling request on each of multiple BWPs configured for the UE after the tune away gap. The operations of815may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of815may be performed by an SR transmission component630as described with reference toFIG.6.

At820, the method may include receiving, from the network entity, a resource grant on a second BWP based on transmitting the scheduling request on each of the multiple BWPs configured for the UE. The operations of820may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of820may be performed by a resource grant component635as described with reference toFIG.6.

Aspect 1: A method for wireless communication at a UE, comprising: communicating with a network entity on a first BWP using a first subscription of the UE; communicating with the network entity using a second subscription of the UE during a tune away gap associated with tuning from the first subscription to the second subscription; transmitting, to the network entity using the first subscription, an SR on each of multiple BWPs configured for the UE after the tune away gap; and receiving, from the network entity, a resource grant on a second BWP based at least in part on transmitting the SR on each of the multiple BWPs configured for the UE.

Aspect 2: The method of aspect 1, wherein transmitting the SR on each of the multiple BWPs configured for the UE comprises: transmitting a first set of one or more SRs on the first BWP after the tune away gap; and transmitting a second SR on the second BWP after the tune away gap based at least in part on a condition being satisfied.

Aspect 3: The method of aspect 2, further comprising: determining that the condition is satisfied based at least in part on a failure to receive one or more resource grants from the network entity on the first BWP responsive to the first set of one or more SRs for a threshold quantity of slots.

Aspect 4: The method of aspect 3, further comprising: determining the threshold quantity of slots based at least in part on a decoding history of the UE, the decoding history associated with a success rate of previous decoding attempts by the UE using the first subscription.

Aspect 5: The method of any of aspects 3 or 4, further comprising: determining the threshold quantity of slots based at least in part on a scheduling rate of the UE, the scheduling rate associated with a percentage of previous slots during which the UE is scheduled for communication with the network entity using the first subscription.

Aspect 6: The method of any of aspects 2 through 5, further comprising: starting a timer for restricting SR transmissions based at least in part on one of the first set of one or more SRs; and transmitting the second SR on the second BWP during an earliest available SR occasion of the second BWP that is before an expiration of the timer, wherein the condition is satisfied before the expiration of the timer.

Aspect 7: The method of any of aspects 1 through 6, further comprising: monitoring for the resource grant from the network entity on each of the multiple BWPs on which the UE transmits the SR, wherein receiving the resource grant on the second BWP is based at least in part on monitoring for the resource grant on each of the multiple BWPs.

Aspect 8: The method of any of aspects 1 through 7, further comprising: receiving, from the network entity, one or more control messages that indicate a set of BWPs that are available to the UE for communication with the network entity and that indicate a set of control resources for each BWP of the set of BWPs, the set of BWPs including at least the first BWP and the second BWP, wherein transmitting the SR on each of the multiple BWPs is based at least in part on receiving the one or more control messages that indicate the set of BWPs that are available to the UE and the set of control resources for each BWP of the set of BWPs.

Aspect 9: The method of aspect 8, wherein for each BWP of the set of BWPs that are available to the UE, the UE transmits the SR on a respective BWP using a respective set of control resources and monitors for the resource grant from the network entity on that BWP sequentially.

Aspect 10: The method of any of aspects 1 through 9, further comprising: releasing a set of radio frequency resources associated with the first subscription for a duration of the tune away gap from the first subscription, wherein transmitting the SR on each of the multiple BWPs is based at least in part on releasing the set of radio frequency resources associated with the first subscription for the duration of the tune away gap.

Aspect 11: The method of any of aspects 1 through 10, further comprising: transmitting, to the network entity on the second BWP using the first subscription, an uplink message based at least in part on receiving the resource grant on the second BWP.

The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure), ascertaining and the like. Also, “determining” can include receiving (such as receiving information), accessing (such as accessing data in a memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing and other such similar actions.