Tracking reference signal for power saving mode

Abstract

Methods, systems, and devices for wireless communication are described. When in a connected mode, a user equipment (UE) may receive a control message indicating whether the UE is to use a channel state information (CSI) reference signal (CSI-RS) as a tracking reference signal (TRS) when the UE is operating in an idle mode or an inactive mode. The UE may transition to the idle mode or the inactive mode, and when in the idle mode or the inactive mode, may perform automatic gain control (AGC), time / frequency tracking, or both, using the CSI-RS as the TRS based on the control message indicating that the UE is to use the CSI-RS as the TRS. In some examples, the UE may perform the AGC, time / frequency tracking, or both based on one or more CSI-RS resource opportunities associated with the CSI-RS.

Description

Technical Field

[0001] The following relates to wireless communications, including the Tracking Reference Signal (TRS) used for power saving modes. Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, and the like. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each of which supports wireless communication of communication devices, which may be referred to as user equipment (UE). Summary of the invention

[0003] The described techniques relate to improved methods, systems, devices, and apparatuses for supporting tracking reference signals (TRS) for power saving modes. In general, the techniques described herein may enable a user equipment (UE) to receive dynamic channel state information (CSI) reference signal (CSI-RS) transmit power updates when operating in an idle mode or an inactive mode to support the use of one or more CSI-RS as TRSs to perform certain functions, such as automatic gain control (AGC), time and frequency tracking (e.g., time / frequency tracking), or both. For example, when in a connected mode, the UE may receive a control message indicating whether the UE is to use the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode. Additionally, the UE may transition to the idle mode or the inactive mode, and when in the idle mode or the inactive mode, perform AGC or time and frequency tracking or both using the CSI-RS as the TRS based on the control message indicating that the UE is to use the CSI-RS as the TRS.

[0004] In some examples, the UE may perform the AGC or time and frequency tracking or both based on one or more CSI-RS resource opportunities associated with the CSI-RS. Additionally or alternatively, the control message may indicate a first CSI-RS resource configuration for the one or more CSI-RS resource opportunities, which may include one or more transmit power offsets between the CSI-RS transmit power and the synchronization signal block (SSB) transmit power. In such cases, the one or more transmit power offsets may include a corresponding transmit power offset for each of the one or more CSI-RS resource opportunities, thereby enabling the UE to determine the transmit power of the CSI-RS used as a TRS before transitioning to the idle or inactive mode. In some cases, the system information message may include an indication of an updated configuration of the one or more CSI-RS resource opportunities. In other examples, the system information may indicate multiple configurations of the one or more CSI-RS resource opportunities, and when in the idle mode or the inactive mode, the control message may select one of the multiple configurations that the UE can use for the AGC or the time and frequency tracking or both.

[0005] A method for wireless communication at a UE is described. The method may include: when in a connected mode, receiving a control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; transitioning to the idle mode or the inactive mode; and when in the idle mode or the inactive mode, performing AGC or time / frequency tracking or both using the CSI-RS as the TRS based on the control message, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0006] A device for wireless communication at a UE is described. The device may include: a processor; a memory coupled to the processor; and instructions stored in the memory. The instructions may be executable by the processor to cause the device to perform the following actions: when in a connected mode, receive a control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; transition to the idle mode or the inactive mode; and when in the idle mode or the inactive mode, based on the control message, use the CSI-RS as the TRS to perform AGC or time / frequency tracking or both, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0007] Another apparatus for wireless communication at a UE is described. The apparatus may include: a component for receiving a control message when in a connected mode, the control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; a component for transitioning to the idle mode or the inactive mode; and a component for performing AGC or time / frequency tracking or both using the CSI-RS as the TRS based on the control message when in the idle mode or the inactive mode, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0008] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions that can be executed by a processor to perform the following actions: when in a connected mode, receive a control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; transition to the idle mode or the inactive mode; and when in the idle mode or the inactive mode, based on the control message, use the CSI-RS as the TRS to perform AGC or time / frequency tracking or both, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0009] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, performing the AGC or the time / frequency tracking or both may include operations, features, components, or instructions for performing the following actions: performing the AGC or the time / frequency tracking or both using the CSI-RS according to the control message and based on one or more CSI-RS resource opportunities associated with the CSI-RS.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message also indicates a first CSI-RS resource configuration for the one or more CSI-RS resource opportunities, and the methods, apparatus, and non-transitory computer-readable media may also include operations, features, components, or instructions for performing the following actions: identifying one or more transmit power offsets between the CSI-RS transmit power and the SSB transmit power, the first CSI-RS resource configuration indicating the one or more transmit power offsets, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both may be based on the one or more transmit power offsets.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the one or more transmit power offsets include a respective transmit power offset for each of the one or more CSI-RS resource opportunities.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: receiving a control signal for paging message reception, the control signal indicating a CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities; and performing additional AGC or additional time / frequency tracking or both using the CSI-RS based on the one or more other CSI-RS resource opportunities.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control signal for paging message reception includes an EPI or a paging DCI.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: receiving a system information message indicating a first CSI-RS resource configuration, which is different from a previous CSI-RS resource configuration received by the UE and indicates the one or more CSI-RS resource opportunities, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both may be based on the first CSI-RS resource configuration.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the system information message may be received before transitioning to the idle mode or the inactive mode, and the system information message may be received after transitioning to the idle mode or the inactive mode.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: receiving a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities; and performing additional AGC or additional time / frequency tracking or both using the CSI-RS based on the one or more other CSI-RS resource opportunities.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control signal for paging message reception includes an EPI or a paging DCI.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: receiving a system information message indicating a set of multiple CSI-RS resource configurations, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both may be based on a first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the first CSI-RS resource configuration indicating the one or more CSI-RS resource opportunities.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message also indicates the first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message excludes an indication of a CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, and the first CSI-RS resource configuration includes a default CSI-RS resource configuration.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: receiving a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration; and performing additional AGC or additional time / frequency tracking or both using the CSI-RS based on the second CSI-RS resource configuration.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control signal for paging message reception includes an EPI or a paging DCI.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: receiving a second control message indicating that the UE may want to exclude the use of the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS, and wherein performing the AGC or the time / frequency tracking or both includes: performing the AGC or the time / frequency tracking or both using SSB based on the second control message.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: before transitioning to the idle mode or the inactive mode, receiving a configuration of one or more functions that may be associated with dynamic adaptation of one or more communication parameters, wherein the CSI-RS may be used to perform the AGC or the time / frequency tracking or both based on the configuration of the one or more functions.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message includes an RRC message or a MAC-CE message.

[0026] A method for wireless communication at a network entity is described. The method may include: communicating with a UE when the UE is operating in a connected mode; sending a control message to the UE, the control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; and sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify a transmit power of the CSI-RS.

[0027] An apparatus for wireless communication at a network entity is described. The apparatus may include: a processor; a memory coupled to the processor; and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to perform the following actions: communicate with the UE when the UE is operating in a connected mode; send a control message to the UE, the control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; and send the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0028] Another apparatus for wireless communication at a network entity is described. The apparatus may include: means for communicating with a UE when the UE is operating in a connected mode; means for sending a control message to the UE, the control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; and means for sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify a transmit power of the CSI-RS.

[0029] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to: communicate with a UE when the UE is operating in a connected mode; send a control message to the UE indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; and send the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the control message may include operations, features, components, or instructions for performing the following actions: sending the control message including an indication that the UE may use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message also indicates a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration indicating one or more transmit power offsets between the CSI-RS transmit power and the SSB transmit power, and the one or more transmit power offsets include a corresponding transmit power offset for each of the one or more CSI-RS resource opportunities.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: sending a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities, wherein the control signal for paging message reception includes EPI or paging DCI.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: sending a system information message, the system information message indicating a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration being different from a previous CSI-RS resource configuration sent to the UE, wherein the system information message may be sent before the UE transitions to the idle mode or the inactive mode or after the UE transitions to the idle mode or the inactive mode.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: sending a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities, wherein the control signal for paging message reception includes EPI or paging DCI.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: sending a system information message, the system information message indicating a set of multiple CSI-RS resource configurations, wherein the control message indicates a first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, and wherein the first CSI-RS resource configuration can be used for one or more CSI-RS resource opportunities associated with the CSI-RS.

[0036] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: sending a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration, wherein the control signal for paging message reception includes EPI or paging DCI.

[0037] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the control message may include operations, features, components, or instructions for performing the following actions: sending the control message including an indication that the UE may exclude the CSI-RS as the TRS.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: before the UE transitions to the idle mode or the inactive mode, sending a configuration of one or more functions that may be associated with the dynamic adaptation of the one or more communication parameters, wherein sending the control message indicating whether the UE may want to use the CSI-RS as the TRS when the UE operates in the idle mode or the inactive mode may be based on the configuration of the one or more functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 An example of a wireless communication system supporting a Tracking Reference Signal (TRS) for a power saving mode according to one or more aspects of the present disclosure is illustrated.

[0040] Figure 2 An example of a wireless communication system supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated.

[0041] Figure 3 An example of a process flow for supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated.

[0042] Figure 4 and Figure 5 A block diagram of a device supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated.

[0043] Figure 6 A block diagram of a communication manager supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated.

[0044] Figure 7 A diagram illustrating a system including a device supporting TRS for a power saving mode according to one or more aspects of the present disclosure is illustrated.

[0045] Figure 8 and Fig. 9 A block diagram of a device supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated.

[0046] Fig.10 A block diagram of a communication manager supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated.

[0047] Fig.11 A diagram illustrating a system including a device supporting TRS for a power saving mode according to one or more aspects of the present disclosure is illustrated.

[0048] Figures 12 to 16A flow chart illustrating a method of supporting TRS for power saving mode according to one or more aspects of the present disclosure is illustrated. DETAILED DESCRIPTION

[0049] Some wireless communication systems may implement power saving features to reduce power consumption while supporting the expansion of cellular networks. For example, a network entity may reduce power consumption by performing dynamic transmit power adaptation, dynamic antenna port adaptation (e.g., resulting in dynamic changes in transmit power), or both for some reference signals such as channel state information (CSI) reference signals (CSI-RS). In some examples, a user equipment (UE) may use reference signals to perform operations such as automatic gain control (AGC), time and frequency tracking (which may also be referred to as time / frequency tracking), and these reference signals may include synchronization signal blocks (SSBs), tracking reference signals (TRSs), or both. In some aspects, CSI-RSs may be configured as TRSs for use by UEs, and these CSI-RSs may also be suitable for power saving techniques such as dynamic transmit power adjustment, dynamic antenna port adjustment, or both.

[0050] In some examples, the UE may reduce power consumption by operating in an idle mode or inactive mode for a duration. In an active mode (e.g., connected mode), the UE may receive dynamic updates of the transmit power of reference signals (e.g., CSI-RS, TRS). Conversely, in an inactive or idle mode, the UE may not receive dynamic updates of the transmit power of the reference signal, for example, without receiving a control signal associated with receiving a paging message or other message indicating a transmit power update. However, receiving a control signal associated with receiving a paging message for each transmit power update may affect network power, UE power, overhead, or any combination thereof. Therefore, a UE operating in an idle or inactive mode may not receive dynamic transmit power updates of TRS (e.g., CSI-RS) associated with a network energy saving scheme.

[0051] Thus, the techniques described herein may enable a UE to receive a dynamic CSI-RS transmit power update of a CSI-RS (e.g., TRS) for performing some functions (such as AGC, time and frequency tracking, or both) when the UE is in an active mode or an inactive mode. For example, a UE operating in an active mode may receive control signaling indicating that the UE is to use CSI-RS as TRS for one or more functions when the UE is in an idle mode or an inactive mode. That is, before transitioning to an idle mode or an inactive mode, the UE may receive an indication of whether the CSI-RS may be used for one or more functions. Thus, the UE may transition to an idle mode or an inactive mode, and may perform AGC, time and frequency tracking, or both based on the control signaling. In some cases, when the UE transitions to an idle mode or an inactive mode, the control signaling may indicate that the UE is to use CSI-RS as TRS. In such cases, the UE may use the CSI-RS and perform AGC, time and frequency tracking, or both according to the CSI-RS resource configuration. The UE may receive an indication of the CSI-RS resource configuration via control signaling in active mode, via system information in active mode, idle mode, or inactive mode, via a control signal for paging message reception in idle mode or inactive mode, or any combination thereof. Conversely, the control signaling may instruct the UE to exclude (e.g., not use) the CSI-RS for performing AGC, time and frequency tracking, or both, so that the UE may use other reference signals such as synchronization signal blocks (SSBs) to perform AGC, time and frequency tracking, or both.

[0052] Additionally or alternatively, whether the UE uses CSI-RS when in idle mode or inactive mode may be based on whether the UE is configured with a feature (e.g., operation, application, functionality, etc.) associated with a dynamic power adaptation scheme used by a network entity (e.g., inherently determined based on the feature). In such a case, the UE may determine whether to use CSI-RS, for example, as a TRS for AGC and / or time and frequency tracking based on the configuration or operation of the UE.

[0053] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are then described in the context of a process flow. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow diagrams related to tracking reference signals for energy saving modes.

[0054] Figure 1An example of a wireless communication system 100 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, a new radio (NR) network, or a network operating according to other systems and radio technologies including future systems and radio technologies not explicitly mentioned herein.

[0055] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may include devices in different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other nomenclature. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) within which the UE 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area within which the network entity 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0056] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile or both stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communication with various types of devices such as Figure 1 Other UEs 115 or network entities 105 are shown communicating.

[0057] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from a second node.

[0058] In some examples, the network entities 105 may communicate with the core network 130, or with each other, or both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, the network entities 105 may communicate with each other via the backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols) directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via the midhaul communication links 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication links 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication links 120, the midhaul communication links 162, or the fronthaul communication links 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0059] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a transceiver base station, a radio base station, a NR base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next generation eNB (ng-eNB), a Home Node B, a Home Evolved Node B, or other suitable terminology). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in a clustered (e.g., monolithic, stand-alone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0060] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, the network entity 105 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC (near RT RIC), a non-real-time RIC (non-RT RIC)), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit receive point (TRP). One or more components of the network entity 105 in the decomposed RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0061] The functional split between CU 160, DU 165, and RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionality and signaling (e.g., Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DUs 165 and the RUs 170, such that the DUs 165 may support one or more layers of the protocol stack, and the RUs 170 may support one or more different layers of the protocol stack. The DUs 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between the CU 160 and the DU 165 or between the DU 165 and the RU 170 may be within the protocol layer (e.g., some functions of the protocol layer may be performed by one of the CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by different ones of the CU 160, DU 165, or RU 170). The CU 160 may be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. The CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and the DU 165 may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented according to an interface (eg, a channel) between layers of a protocol stack supported by respective network entities 105 that communicate via such communication links.

[0062] In some wireless communication systems (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a coupled IAB donor's DU 165. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas (e.g., of the RU 170) of the IAB node 104 for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0063] Where the techniques described herein are applied to the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture may be configured to support TRS for energy saving mode as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0064] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0065] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 shown.

[0066] The UE 115 and the network entity 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" may refer to a collection of RF spectrum resources having a physical layer structure defined for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any portion (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send," "receive," or "communicate" when referring to the network entity 105 may refer to any portion of a network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0067] The signal waveform transmitted via the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and the subcarrier spacing may be inversely related. The amount of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), so that a relatively high amount of resource elements (e.g., in the transmission duration) and a relatively high modulation scheme order may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0068] The time interval for the network entity 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, a sampling period. seconds, of which may indicate the supported subcarrier spacing, and The supported discrete Fourier transform (DFT) size may be indicated. Time intervals of the communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0069] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a certain number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a certain number of symbol periods (e.g., depending on the length of the cyclic prefix appended to the front of each symbol period). In some wireless communication systems 100, the time slot may be further divided into a plurality of micro-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0070] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the amount of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0071] According to various techniques, physical channels may be multiplexed using carriers for communication. Physical control channels and physical data channels may be multiplexed for signaling via downlink carriers, for example, using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth of a carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of the control channel candidates may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0072] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0073] Some UEs 115 may be configured to employ an operating mode that reduces power consumption, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not transmit and receive concurrently). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UEs 115 include entering a power saving deep sleep mode when not engaged in active communications, operating using limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0074] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). The UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communications may include private communications or group communications and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms "ultra-reliable," "low latency," and "ultra-reliable low latency" are used interchangeably herein.

[0075] In some examples, a UE 115 may be configured to support communication directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 in such a group may be outside of the coverage area 110 of the network entity 105, or may otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, network entity 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105.

[0076] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management of UEs 115 served by network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be delivered through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP services 150 of one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0077] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from about one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves may be sufficient to penetrate structures so that macro cells provide service to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than communications using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0078] The wireless communication system 100 can utilize licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 can use unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating using unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 can employ carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands can be based on carrier aggregation configuration (e.g., LAA) in conjunction with component carriers operating using licensed bands. Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0079] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of the network entity 105 or UE 115 may be located in one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly such as an antenna tower. In some examples, antennas or antenna arrays associated with the network entity 105 may be located at different geographical locations. The network entity 105 may include an antenna array having a set of antenna ports of multiple rows and columns that the network entity 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0080] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a sending device or a receiving device (e.g., a network entity 105, a UE 115) to shape or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the sending device and the receiving device. Beamforming may be achieved by combining signals conveyed via antenna elements of an antenna array so that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the sending device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the sending device or the receiving device or relative to some other orientation).

[0081] The network entity 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the network entity 105 (e.g., the base station 140, the RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the network entity 105 along different directions. For example, the network entity 105 may send signals according to different sets of beamforming weights associated with different transmission directions. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device (such as the network entity 105), or by a receiving device (such as the UE 115)) beam directions for later transmission or reception by the network entity 105.

[0082] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., a direction associated with a receiving device (such as receiving network entity 105 or receiving UE 115)). In some examples, a beam direction associated with transmission along a single beam direction may be determined based on signals transmitted along one or more beam directions. For example, UE 115 may receive one or more of the signals sent by network entity 105 along different directions, and may report to network entity 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0083] In some examples, transmission by a device (e.g., by network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more subbands. Network entity 105 may send reference signals (e.g., cell-specific reference signals (CRS), CSI-RS) that may be precoded or uncoded. UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel codebook, linear combination codebook, port selection codebook). Although these techniques are described with reference to signals sent along one or more directions by a network entity 105 (e.g., base station 140, RU 170), UE 115 may use similar techniques to send signals multiple times along different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115), or to send signals along a single direction (e.g., to send data to a receiving device).

[0084] A receiving device (e.g., UE 115) may perform receiving operations according to multiple receiving configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a receiving device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple receiving directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receiving beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing received signals according to different receiving beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receiving configurations or receiving directions. In some examples, the receiving device may use a single receiving configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0085] UE 115 may operate according to various states or modes for communicating with the network. For example, UE 115 may operate in an RRC idle state (e.g., RRC_IDLE), an RRC inactive state (e.g., RRC_INACTIVE), and / or an RRC connected state (e.g., RRC_CONNECTED). UE 115 may transition between various states or modes, for example, based on the communication traffic of UE 115. In the RRC idle state (which may be referred to as idle mode), UE 115 may not be registered to a particular cell, and accordingly may lack an access stratum (AS) context, and UE 115 may thus not have an active RRC connection established with the network (e.g., via network entity 105). In idle mode, UE 115 may periodically wake up to monitor channels to look for paging or other signaling, and the mobility of UE 115 may be managed by UE 115 when performing measurements of one or more cells. In the RRC connected state (which may be referred to as connected mode or active mode), the UE 115 may have an established RRC connection (e.g., with the 5GC) in which the UE 115 may store an AS context. Here, the UE 115 may belong to a known cell and may be identified using, for example, a cell radio network temporary identifier (C-RNTI) assigned to the UE 115. While in connected mode, the UE 115 may monitor messages sent by the network, which may include monitoring various channels (e.g., paging channels, control channels, etc.).

[0086] The RRC inactive state (which may be referred to as an inactive mode) may be used to reduce signaling overhead and may provide an intermediate state (e.g., between idle and connected), and the inactive state may also be used to reduce latency when transitioning to another state (e.g., to connected mode). The UE 115 may periodically wake up while in the inactive mode to monitor control signals for receiving paging messages from the network, wherein the UE 115 may perform a random access procedure in some cases to switch to connected mode and communicate with the network.

[0087] The wireless communication system 100 may support dynamic indication of CSI-RS transmit power updates for UE 115, which may support dynamically changing power parameters of TRS (e.g., CSI-RS) used to perform some functions (such as AGC, time and frequency tracking, or both) when UE 115 is in idle mode or inactive mode. For example, when operating in active mode, UE 115 may receive control signaling indicating whether UE 115 is to use CSI-RS as TRS for one or more functions to be performed when UE 115 is in idle mode or inactive mode. Therefore, UE 115 may transition to idle mode or inactive mode, and may perform AGC, time and frequency tracking, or both based on the control signaling. In some cases, when UE 115 transitions to idle mode or inactive mode, the control signaling may indicate that UE 115 is to use CSI-RS as TRS. In such cases, the UE 115 may use the CSI-RS to perform AGC, time and frequency tracking, or both, based on the CSI-RS resource configuration for one or more CSI-RS opportunities. The UE 115 may receive an indication of the CSI-RS resource configuration via control signaling (e.g., RRC signaling, such as an RRC connection release message) when in active mode, via system information (e.g., one or more system information blocks (SIBs)) when in active mode, idle mode, or inactive mode, via a control signal for paging message reception when in idle mode or inactive mode, or any combination thereof. Conversely, the control signaling may indicate to the UE 115 that the CSI-RS is to be excluded from use for performing AGC, time and frequency tracking, or both, such that the UE 115 may use some other reference signal (e.g., SSB) to perform AGC, time and frequency tracking, or both.

[0088] Additionally or alternatively, whether UE 115 uses CSI-RS when in idle mode or inactive mode may be based on whether UE 115 is configured with a feature (e.g., operation, application, functionality, etc.) associated with the dynamic power adaptation scheme used by network entity 105 (e.g., inherently determined based on the feature). For example, UE 115 may receive a configuration of one or more functions (e.g., associated with dynamic transmit power update) before (e.g., before) transitioning to idle mode or inactive mode. In some cases, one or more functions may include, but are not limited to, AGC, time and frequency tracking, or both. Therefore, UE 115 may determine to use CSI-RS for one or more functions based on the configuration. In other examples, UE 115 may be configured with other features that are not associated with the dynamic transmit power adaptation scheme used by network entity 105-a, and UE 115 may use some other reference signals (such as SSB, etc.) when performing one or more functions in idle mode or inactive mode.

[0089] Figure 2 An example of a wireless communication system 200 that supports TRS for energy saving mode according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100 or can be implemented by these aspects. For example, the wireless communication system 200 may include one or more network entities 105 (e.g., network entity 105-a) and one or more UEs 115 (e.g., UE 115-a), which can be as described in reference Figure 1 Examples of corresponding devices described. Figure 2 In the example of FIG. 1 , the network entity 105 - a may be a CU 160, a DU 165, a RU 170, a base station 140, an IAB node 104, or a Figure 1 Examples of one or more other network nodes described. The wireless communication system 200 may include features that enable a UE 115-a to use dynamic CSI-RS transmit power updates for a CSI-RS when performing certain functions (such as AGC, time and frequency tracking, or both) when operating in an idle mode 210 or an inactive mode 215.

[0090] The wireless communication system 200 may utilize power conservation schemes to reduce power consumption (e.g., power consumption associated with a particular RAN and associated technologies) while supporting expansion of cellular networks. For example, a network entity 105 (such as network entity 105-a) may reduce power consumption by performing dynamic transmit power adaptation, dynamic antenna port adaptation (e.g., resulting in dynamic changes in transmit power), or both. The network entity 105-a may perform dynamic transmit power adaptation by dynamically updating (e.g., changing) the transmit power of some reference signals (such as CSI-RS 225). Additionally or alternatively, the network entity 105-a may perform dynamic antenna port adaptation by dynamically shutting down antenna ports at the network entity 105-a, thereby dynamically changing the transmit power of reference signals such as CSI-RS 225 (e.g., allowing a power amplifier at the network entity 105-a to operate in a more energy efficient mode). In either case, the network entity 105 - a may dynamically indicate (eg, via the control message 220 ) to a UE 115 - a operating in the connected mode 205 , a dynamic update or dynamic change to the transmit power of a reference signal.

[0091] In some examples, a UE 115 (such as UE 115-a) may use a reference signal (which may include an SSB 230, a TRS, or both) to perform functions (e.g., operations) such as AGC, time and frequency tracking (e.g., time tracking, frequency tracking, or both). In some examples (e.g., using TRS to perform these functions), the UE 115-a may receive a control message 220 (e.g., RRC signaling) from the network entity 105-a that indicates a transmit power of a reference signal (e.g., associated with the reference signal). Additionally or alternatively, the CSI-RS 225 may be configured as a TRS. That is, the UE 115-a may use the CSI-RS 225 to perform AGC, time and frequency tracking, or both, and the CSI-RS 225 may be adapted accordingly for power saving techniques, such as dynamic transmit power adjustment, dynamic antenna port adjustment, or both.

[0092] In some examples, the UE 115-a may reduce power consumption by operating in an idle mode 210 or an inactive mode 215 for a duration. In such cases, the UE 115-a may use the SSB 230 to perform functions such as AGC, time and frequency tracking, or both. Additionally or alternatively, the network entity 105-a may configure (e.g., send a control message 220 for configuration) a CSI-RS 225 for AGC, time and frequency tracking, or both for the UE 115-a (e.g., configure the CSI-RS 225 as a TRS). That is, the CSI-RS opportunities of the UE 115 operating in the connected mode 205 may be shared with the UE 115 operating in the idle mode 210 or the inactive mode 215. Here, the UE 115-a may support periodic CSI-RS configuration in the idle mode 210 or the inactive mode 215. Additionally, utilization of CSI-RS by a UE 115 in an idle mode 210 or an inactive mode 215 may not be limited to TRS (e.g., trs-info may not be provided in the CSI-RS configuration), and such a UE 115 may use CSI-RS to perform other functions while in an idle mode 210 or an inactive mode 215.

[0093] In connected mode 205 (e.g., active mode), UE 115-a may receive dynamic updates to the transmit power of CSI-RS 225. However, in idle mode 210 or inactive mode 215, UE 115-a may not receive dynamic updates to the transmit power of CSI-RS 225, e.g., without providing additional signaling to UE 115-a, which may result in increased overhead and further affect power consumption at UE 115-a and / or network entity 105-a. Specifically, while in idle mode 210 or inactive mode 215, UE 115-a may receive a system information message (e.g., a system information block (SIB)) indicating a configuration of a CSI-RS opportunity (e.g., a TRS opportunity). Additionally, the UE 115-a may receive a control signal for paging message reception (e.g., paging downlink control information (DCI) or early paging indication (EPI) (e.g., advance notification of a paging opportunity)) or other message indicating a transmit power update associated with a CSI-RS opportunity (e.g., indicating CSI-RS opportunity availability) (e.g., when operating in the idle mode 210 or the inactive mode 215). However, when a message (e.g., a paging message) is sent to the UE 115-a, the network entity 105-a may send (e.g., only send) the paging DCI or EPI (e.g., a control signal for paging message reception). That is, the network entity 105-a may only send an indication of a transmit power update when a control signal for paging message reception is sent to (e.g., scheduled to) the UE 115-a. Therefore, the indication of a transmit power update via control signaling associated with the paging message may not be dynamic (e.g., may not be aligned with the paging opportunity or the timing when the control signaling associated with the paging message is transmitted). Additionally or alternatively, receiving a control signal for paging message reception for each transmit power update may affect network power, overhead, or both. In addition, UE 115-a may monitor the control signal for paging message reception based on a monitoring timing that may not be aligned with a timing at which a transmit power update occurs (e.g., a timing at which a UE 115 in connected mode receives a transmit power update). As such, a UE 115-a operating in idle mode 210 or inactive mode 215 (e.g., a UE 115-a in idle mode or inactive mode) may not be able to receive dynamic transmit power updates for a TRS (e.g., CSI-RS) when the network implements a power saving scheme (e.g., for CSI-RS).

[0094] Thus, the techniques described herein may enable a UE 115-a to receive dynamic transmit power updates for a CSI-RS 225 (e.g., a TRS) to perform functions such as AGC, time and frequency tracking, or both when the UE 115-a is in an idle mode 210 or an inactive mode 215. For example, a network entity 105-a may send a control message 220 (e.g., an RRC message, an RRC connection release message, a MAC-CE) to the UE 115-a that includes an indication of whether the UE 115-a is to use the CSI-RS 225 (e.g., as a TRS) for one or more functions when the UE 115-a is operating in the idle mode 210 or the inactive mode 215. For example, the control message 220 may indicate that the UE 115-a is to use the CSI-RS 225 (e.g., as a TRS) for AGC, time and frequency tracking, or both, such that the UE 115-a may transition to the idle mode 210 or the inactive mode 215 and use the CSI-RS 225 associated with one or more CSI-RS resource opportunities to perform AGC, time and frequency tracking, or both. Conversely, the control message 220 may indicate that the UE 115-a is to exclude the use of the CSI-RS 225 (e.g., as a TRS) for (e.g., not use the CSI-RS for) AGC, time and frequency tracking, or both, such that the UE 115-a may transition to the idle mode 210 or the inactive mode 215 and use other reference signals such as the SSB 230 to perform AGC, time and frequency tracking, or both.

[0095] Additionally or alternatively, the UE 115-a may determine whether to use the CSI-RS 225 as a TRS for one or more functions when the UE 115-a is operating in the idle mode 210 or the inactive mode 215 based on the configuration of the UE 115-a in the connected mode 205. In such cases, the UE 115-a may receive a configuration of one or more functions (e.g., associated with dynamic transmit power update) before (e.g., before) transitioning to the idle mode 210 or the inactive mode 215. In some cases, the one or more functions may include, but are not limited to, AGC, time and frequency tracking, or both. In any case, the UE 115-a may determine to exclude the use of the CSI-RS 225 for (e.g., not use the CSI-RS for) AGC, time and frequency tracking, or both in the idle mode 210 or the inactive mode 215 based on the UE 115-a being configured with features not associated with dynamic transmit power update (such as dynamic antenna port adaptation, dynamic transmit power adaptation, or both) in the connected mode 205. Conversely, UE 115-a may determine whether to use CSI-RS 225 for AGC, time and frequency tracking, or both in idle mode 210 or inactive mode 215 based on UE 115-a being configured with features associated with dynamic transmit power updates (such as dynamic antenna port adaptation, dynamic transmit power adaptation, or both).

[0096] In some examples, such as when UE 115-a uses CSI-RS 225 for AGC, time and frequency tracking, or both in idle mode 210 or inactive mode 215, UE 115-a may receive an indication of a first CSI-RS resource configuration (e.g., a CSI-RS resource opportunity configuration) associated with one or more resource opportunities further associated with CSI-RS 225. The first CSI-RS resource configuration may indicate one or more transmit power offsets (e.g., one transmit power offset for each CSI-RS resource) between a transmit power associated with CSI-RS 225 and a transmit power associated with SBS 230 for the CSI-RS resource. That is, the first CSI-RS resource configuration may indicate a respective transmit power offset for each CSI-RS resource opportunity in the one or more resource opportunities associated with CSI-RS 225.

[0097] In some cases, the control message 220 may include an indication of the first CSI-RS resource configuration. That is, a UE 115-a operating in the connected mode 205 may receive the control message 220 indicating the first CSI-RS configuration, causing the UE 115-a to use the CSI-RS 225 to perform AGC, time and frequency tracking, or both based on one or more transmit power offsets indicated via the first CSI-RS resource configuration (e.g., further indicated via the control message 220).

[0098] Additionally or alternatively, UE 115-a may receive a system information message (e.g., SIB) indicating a second (e.g., updated) CSI-RS resource configuration. That is, the system information message may indicate a second CSI-RS resource configuration that is different from a previous CSI-RS resource configuration (such as the first CSI-RS resource configuration) received by UE 115-a. In some cases, UE 115-a may receive the system information message while in connected mode 205 and before (e.g., before) UE 115-a transitions to idle mode 210 or inactive mode 215. In some other cases, UE 115-a may receive the system information message after (e.g., immediately after) UE 115-a transitions to idle mode 210 or inactive mode 215.

[0099] In some examples, UE 115-a may (e.g., in connected mode 205) receive a system information message indicating a set of CSI-RS resource configurations (e.g., multiple CSI-RS resource configurations), which may include at least a first CSI-RS resource configuration and a second CSI-RS resource configuration. In such cases, UE 115-a may receive an indication of a CSI-RS resource configuration (such as a third CSI-RS resource configuration) from the set of CSI-RS resource configurations (e.g., via control message 220). The indication of the third CSI-RS resource configuration may be an indication of an index corresponding to the third CSI-RS resource configuration in the set of CSI-RS resource configurations.

[0100] In some examples, control message 220 may exclude an indication of a CSI-RS resource configuration selected from the set of CSI-RS resource configurations (e.g., an indication of a third CSI-RS resource configuration). Accordingly, UE 115-a may use a default CSI-RS resource configuration from the set of CSI-RS resource configurations (e.g., which may result in relatively reduced overhead and / or latency compared to control message 220 indicating a first CSI-RS resource configuration and an SIB indicating a second CSI-RS resource configuration).

[0101] UE 115-a may receive a control signal for paging message reception (e.g., a paging DCI or EPI), the control signal indicating a CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the CSI-RS resource configuration overriding a previous CSI-RS resource configuration. That is, UE 115-a may receive a control signal for paging message reception, the control signal indicating a fourth CSI-RS resource configuration that overlays a previous CSI-RS resource configuration (e.g., a first CSI-RS resource configuration, a second CSI-RS resource configuration, or a third CSI-RS resource configuration in a set of CSI-RS resource configurations). In some examples (e.g., if the control signal for paging message reception overlays the third CSI-RS resource configuration), the control signal for paging message reception may include an indication of an index corresponding to the fourth CSI-RS resource configuration.

[0102] Figure 3 An example of a process flow 300 for supporting TRS for energy saving mode according to one or more aspects of the present disclosure is illustrated. In some examples, the process flow 300 may implement or be implemented by aspects of the wireless communication system 100 and the wireless communication system 200. For example, the process flow 300 may include one or more network entities 105 (e.g., network entity 105-b) and one or more UEs 115 (e.g., UE 11-b), which may be as described in reference Figure 1 Examples of corresponding devices described. Figure 3 In the example of FIG. 1 , the network entity 105 - b may be a CU 160, a DU 165, a RU 170, a base station 140, an IAB node 104, or a Figure 1 Examples of one or more other network nodes described. The process flow 300 may include features for enabling a UE 115-b operating in an idle mode or inactive mode to receive dynamic transmit power updates to support the use of TRS (e.g., CSI-RS) to perform certain functions (such as AGC, time and frequency tracking, or both) to facilitate network energy conservation.

[0103] In some cases, at 305 UE 115 - b may receive a first system information message (eg, SIB) indicating a set of CSI-RS resource configurations.

[0104] At 310, while in connected mode, UE 115-b may receive a control message indicating whether UE 115-b is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when UE 115-b is operating in an idle mode or an inactive mode. In some examples, the control message may indicate a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS. Additionally or alternatively, the control message may indicate a first CSI-RS resource configuration in a set of CSI-RS resource configurations. Alternatively, the control message may exclude an indication of a CSI-RS resource configuration in the set of CSI-RS resource configurations.

[0105] In some examples, UE 115-b may receive configuration of one or more functions associated with dynamic adaptation of one or more communication parameters prior to transitioning to an idle mode or an inactive mode (e.g., via a control message). Additionally or alternatively, the control message may include an RRC message (e.g., an RRC connection release message) or a MAC-CE message.

[0106] At 315 , UE 115 - b may transition to an idle mode or an inactive mode.

[0107] In some cases, at 320, UE 115-b may optionally receive a second system information message indicating a second CSI-RS resource configuration that is different from a previous CSI-RS resource configuration received by UE 115-b. The second CSI-RS resource configuration may indicate one or more CSI-RS resource opportunities. UE 115-b may receive the second system information message after transitioning to an idle mode or an inactive mode. In some other examples (e.g., not depicted in process flow 300), UE 115-b may receive the second system information message before (e.g., before) transitioning to an idle mode or an inactive mode.

[0108] In some cases, at 325, UE 115-b may identify one or more transmit power offsets between a CSI-RS transmit power and an SSB transmit power, the one or more transmit power offsets indicated via a CSI-RS resource configuration (e.g., a first CSI-RS resource configuration, a second CSI-RS resource configuration). In such cases, the one or more transmit power offsets may include a respective transmit power offset for each of the one or more CSI-RS resource opportunities.

[0109] In some cases, at 330 , UE 115 - b may receive CSI-RS associated with one or more CSI-RS resource opportunities.

[0110] At 335, while in an idle mode or an inactive mode, the UE 115-b may perform one or more functions (such as AGC, time and frequency tracking, or both) using the CSI-RS as a TRS based on a control message indicating that the UE 115-b is to use the CSI-RS for one or more functions that include using the CSI-RS (e.g., as a TRS). In some examples, the UE 115-b may perform AGC, time and frequency tracking, or both based on one or more CSI-RS resource opportunities associated with the CSI-RS, based on one or more transmit power offsets, a CSI-RS resource configuration (e.g., a first CSI-RS resource configuration, a second CSI-RS resource configuration), or any combination thereof. Additionally or alternatively, the UE 115-b may perform AGC, time and frequency tracking, or both based on a default CSI-RS resource configuration (e.g., when the control message may exclude an indication of a CSI-RS resource configuration in a set of CSI-RS resource configurations).

[0111] In some cases, at 340, UE 115-b may receive a control signal for paging message reception that indicates a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities that overlap the one or more CSI-RS resource opportunities. The control signal for paging message reception may include an EPI or a paging DCI.

[0112] In some cases, UE 115-b may perform additional AGC, additional time and frequency tracking, or both using the CSI-RS at 345. In some examples, UE 115-b may perform additional AGC, additional time and frequency tracking, or both based on one or more other CSI-RS resource opportunities associated with the second CSI-RS resource configuration.

[0113] In some examples (e.g., not depicted in process flow 300), UE 115-b may receive a second control message indicating that UE 115-b is to exclude use of CSI-RS for one or more functions that include use of CSI-RS as a tracking reference signal. In such cases, while in idle mode or inactive mode, UE 115-b may use SSB to perform additional functions such as AGC, time and frequency tracking, or both, based on the second control message.

[0114] Figure 4A block diagram 400 of a device 405 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The device 405 can be an example of aspects of the UE 115 as described herein. The device 405 may include a receiver 410, a transmitter 415, and a communication manager 420. The device 405 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0115] Receiver 410 may provide means for receiving 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 TRS for power saving mode). The information may be communicated to other components of device 405. Receiver 410 may utilize a single antenna or a collection of multiple antennas.

[0116] The transmitter 415 may provide means for transmitting signals generated by other components of the device 405. For example, the transmitter 415 may transmit information associated with various information channels (e.g., a control channel related to a TRS for an energy saving mode, a data channel, an information channel), such as packets, user data, control information, or any combination thereof. In some examples, the transmitter 415 may be co-located with the receiver 410 in a transceiver module. The transmitter 415 may utilize a single antenna or a collection of multiple antennas.

[0117] The communication manager 420, the receiver 410, the transmitter 415, or various combinations thereof or various components thereof may be examples of means for performing various aspects of TRS for power saving mode as described herein. For example, the communication manager 420, the receiver 410, the transmitter 415, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0118] In some examples, the communication manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured as or otherwise supports components for performing the functions described in the present disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0119] Additionally or alternatively, in some examples, the communication manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0120] In some examples, communication manager 420 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with receiver 410, transmitter 415, or both. For example, communication manager 420 may receive information from receiver 410, transmit information to transmitter 415, or be integrated in conjunction with receiver 410, transmitter 415, or both to obtain information, output information, or perform various other operations as described herein.

[0121] According to the examples disclosed herein, the communication manager 420 may support wireless communications at the UE. For example, the communication manager 420 may be configured to or otherwise support a component for receiving a control message when in a connected mode, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as the TRS when the UE is operating in an idle mode or an inactive mode. The communication manager 420 may be configured to or otherwise support a component for transitioning to the idle mode or the inactive mode. The communication manager 420 may be configured to or otherwise support a component for performing AGC or time / frequency tracking or both using the CSI-RS as the TRS based on the control message when in the idle mode or the inactive mode, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0122] By including or configuring a communication manager 420 according to examples as described herein, a device 405 (e.g., a processor controlling a receiver 410, a transmitter 415, a communication manager 420, or a combination thereof or otherwise coupled thereto) may support techniques for TRS for power saving modes that may enable reduced processing, lower power consumption, and more efficient use of communication resources, among other advantages.

[0123] Figure 5A block diagram 500 of a device 505 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The device 505 can be an example of aspects of the device 405 or UE 115 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communication manager 520. The device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0124] Receiver 510 may provide means for receiving 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 TRS for power saving mode). The information may be communicated to other components of device 505. Receiver 510 may utilize a single antenna or a collection of multiple antennas.

[0125] The transmitter 515 may provide means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information associated with various information channels (e.g., a control channel related to a TRS for an energy saving mode, a data channel, an information channel), such as packets, user data, control information, or any combination thereof. In some examples, the transmitter 515 may be co-located with the receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a collection of multiple antennas.

[0126] Device 505 or its various components may be examples of components for performing various aspects of TRS for energy saving mode as described herein. For example, communication manager 520 may include configuration component 525, idle mode component 530, reference signal component 535, or any combination thereof. Communication manager 520 may be an example of various aspects of communication manager 420 as described herein. In some examples, communication manager 520 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 510, transmitter 515, or both. For example, communication manager 520 may receive information from receiver 510, transmit information to transmitter 515, or be integrated with receiver 510, transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.

[0127] According to examples as disclosed herein, the communication manager 520 may support wireless communications at the UE. The configuration component 525 may be configured to or otherwise support a component for receiving a control message when in a connected mode, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as the TRS when the UE is operating in an idle mode or an inactive mode. The idle mode component 530 may be configured to or otherwise support a component for transitioning to the idle mode or the inactive mode. The reference signal component 535 may be configured to or otherwise support a component for performing AGC or time / frequency tracking or both using the CSI-RS as the TRS based on the control message when in the idle mode or the inactive mode, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0128] Figure 6 A block diagram 600 of a communication manager 620 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The communication manager 620 can be an example of aspects of the communication manager 420, the communication manager 520, or both as described herein. The communication manager 620 or its various components can be examples of components for performing various aspects of TRS for energy saving mode as described herein. For example, the communication manager 620 may include a configuration component 625, an idle mode component 630, a reference signal component 635, a synchronization signal block component 640, a transmit power component 645, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0129] According to examples as disclosed herein, the communication manager 620 may support wireless communications at the UE. The configuration component 625 may be configured to or otherwise support a component for receiving a control message when in a connected mode, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as the TRS when the UE is operating in an idle mode or an inactive mode. The idle mode component 630 may be configured to or otherwise support a component for transitioning to the idle mode or the inactive mode. The reference signal component 635 may be configured to or otherwise support a component for performing AGC or time / frequency tracking or both using the CSI-RS as the TRS based on the control message when in the idle mode or the inactive mode, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0130] In some examples, to support performing the AGC or the time / frequency tracking or both, the reference signal component 635 may be configured as or otherwise support components for performing the AGC or the time / frequency tracking or both using the CSI-RS in accordance with the control message and based on one or more CSI-RS resource opportunities associated with the CSI-RS.

[0131] In some examples, the control message also indicates a first CSI-RS resource configuration for the one or more CSI-RS resource opportunities, and the transmit power component 645 may be configured as or otherwise support a component for identifying one or more transmit power offsets between the CSI-RS transmit power and the synchronization signal block transmit power, the first CSI-RS resource configuration indicating the one or more transmit power offsets, wherein the use of the CSI-RS to perform the AGC or the time / frequency tracking or both is based on the one or more transmit power offsets.

[0132] In some examples, the one or more transmit power offsets include a respective transmit power offset for each of the one or more CSI-RS resource opportunities.

[0133] In some examples, configuration component 625 may be configured to or otherwise support a component for receiving a control signal for paging message reception, the control signal indicating a CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities. In some examples, reference signal component 635 may be configured to or otherwise support a component for performing additional AGC or additional time / frequency tracking or both using the CSI-RS based on the one or more other CSI-RS resource opportunities.

[0134] In some examples, the control signal for paging message reception includes EPI or paging DCI.

[0135] In some examples, configuration component 625 may be configured to or otherwise support components for receiving a system information message indicating a first CSI-RS resource configuration that is different from a previous CSI-RS resource configuration received by the UE and indicating one or more CSI-RS resource opportunities, wherein use of the CSI-RS to perform the AGC or the time / frequency tracking or both is based on the first CSI-RS resource configuration.

[0136] In some examples, the system information message is received before transitioning to the idle mode or the inactive mode. In some examples, the system information message is received after transitioning to the idle mode or the inactive mode.

[0137] In some examples, configuration component 625 may be configured to or otherwise support a component for receiving a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities. In some examples, reference signal component 635 may be configured to or otherwise support a component for performing additional AGC or additional time / frequency tracking or both using the CSI-RS based on the one or more other CSI-RS resource opportunities.

[0138] In some examples, the control signal for paging message reception includes EPI or paging DCI.

[0139] In some examples, configuration component 625 may be configured to or otherwise support components for receiving a system information message indicating a set of multiple CSI-RS resource configurations, wherein use of the CSI-RS to perform the AGC or the time / frequency tracking or both is based on a first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the first CSI-RS resource configuration indicating the one or more CSI-RS resource opportunities.

[0140] In some examples, the control message also indicates the first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations.

[0141] In some examples, the control message excludes indication of a CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, and the first CSI-RS resource configuration includes a default CSI-RS resource configuration.

[0142] In some examples, configuration component 625 may be configured to or otherwise support means for receiving a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration. In some examples, reference signal component 635 may be configured to or otherwise support means for performing additional AGC or additional time / frequency tracking or both using the CSI-RS based on the second CSI-RS resource configuration.

[0143] In some examples, the control signal for paging message reception includes EPI or paging DCI.

[0144] In some examples, the configuration component 625 may be configured to or otherwise support a component for receiving a second control message indicating that the UE is to exclude the use of the CSI-RS for the one or more functions, the one or more functions including the use of the CSI-RS as the TRS, and wherein performing the AGC or the time / frequency tracking or both includes. In some examples, the synchronization signal block component 640 may be configured to or otherwise support a component for performing the AGC or the time / frequency tracking or both using a synchronization signal block based on the second control message.

[0145] In some examples, configuration component 625 may be configured to or otherwise support components for receiving a configuration of one or more functions associated with dynamic adaptation of one or more communication parameters prior to transitioning to the idle mode or the inactive mode, wherein based on the configuration of the one or more functions, the CSI-RS is used to perform the AGC or the time / frequency tracking or both.

[0146] In some examples, the control message includes an RRC message or a MAC-CE message.

[0147] Figure 7 A diagram of a system 700 including a device 705 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The device 705 may be an example of a device 405, a device 505, or a UE 115 as described herein, or include components thereof. The device 705 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 705 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 720, an input / output (I / O) controller 710, a transceiver 715, an antenna 725, a memory 730, a code 735, and a processor 740. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 745).

[0148] I / O controller 710 can manage input signals and output signals of device 705. I / O controller 710 can also manage peripheral devices that are not integrated into device 705. In some cases, I / O controller 710 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 710 can utilize an operating system, such as iOS. ® ANDROID ®, MS-DOS ® 、MS-WINDOWS ® , OS / 2 ® ,UNIX ® 、LINUX ® or another known operating system. Additionally or alternatively, I / O controller 710 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 710 may be implemented as part of a processor such as processor 740. In some cases, a user may interact with device 705 via I / O controller 710 or via hardware components controlled by I / O controller 710.

[0149] In some cases, the device 705 may include a single antenna 725. However, in some other cases, the device 705 may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 715 may communicate bidirectionally via one or more antennas 725, a wired or wireless link, as described herein. For example, the transceiver 715 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 715 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 725 for transmission; and demodulating packets received from one or more antennas 725. The transceiver 715 or the transceiver 715 and the one or more antennas 725 may be examples of transmitters 415, transmitters 515, receivers 410, receivers 510, or any combination thereof or components thereof as described herein.

[0150] The memory 730 may include random access memory (RAM) and read-only memory (ROM). The memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed by the processor 740, cause the device 705 to perform various functions described herein. The code 735 may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some cases, the code 735 may not be directly executable by the processor 740, but may (for example, when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 730 may also contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0151] The processor 740 may 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 processor 740 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 740. The processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 730) to enable the device 705 to perform various functions (e.g., various functions or tasks of a TRS supporting a power saving mode). For example, the device 705 or a component of the device 705 may include a processor 740 and a memory 730 coupled to or coupled to the processor 740, and the processor 740 and the memory 730 are configured to perform the various functions described herein.

[0152] According to the examples disclosed herein, the communication manager 720 may support wireless communications at the UE. For example, the communication manager 720 may be configured to or otherwise support a component for receiving a control message when in a connected mode, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as the TRS when the UE is operating in an idle mode or an inactive mode. The communication manager 720 may be configured to or otherwise support a component for transitioning to the idle mode or the inactive mode. The communication manager 720 may be configured to or otherwise support a component for performing AGC or time / frequency tracking or both using the CSI-RS as the TRS based on the control message when in the idle mode or the inactive mode, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0153] By including or configuring a communication manager 720 according to the examples described herein, the device 705 can support techniques for TRS for power saving mode that can achieve improved communication reliability, reduced latency, improved user experience associated with reduced processing, reduced power consumption, more efficient use of communication resources, improved coordination between devices, increased battery life, and improved utilization of processing power, among other advantages.

[0154] In some examples, the communication manager 720 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 715, one or more antennas 725, or any combination thereof. Although the communication manager 720 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 720 may be supported or performed by the processor 740, the memory 730, the code 735, or any combination thereof. For example, the code 735 may include instructions that are executable by the processor 740 to cause the device 705 to perform various aspects of TRS for energy saving mode as described herein, or the processor 740 and the memory 730 may be otherwise configured to perform or support such operations.

[0155] Figure 8 A block diagram 800 of a device 805 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The device 805 may be an example of aspects of the network entity 105 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communication manager 820. The device 805 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0156] The receiver 810 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be passed to other components of the device 805. In some examples, the receiver 810 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 810 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0157] The transmitter 815 may provide a means for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of the device 805. For example, the transmitter 815 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 815 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 815 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 815 and the receiver 810 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0158] The communication manager 820, the receiver 810, the transmitter 815, or various combinations thereof or various components thereof may be examples of means for performing various aspects of TRS for power saving mode as described herein. For example, the communication manager 820, the receiver 810, the transmitter 815, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0159] In some examples, the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured as or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0160] Additionally or alternatively, in some examples, the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0161] In some examples, the communication manager 820 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 810, the transmitter 815, or both. For example, the communication manager 820 can receive information from the receiver 810, transmit information to the transmitter 815, or integrate with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0162] According to examples as disclosed herein, the communication manager 820 may support wireless communications at a network entity. For example, the communication manager 820 may be configured to or otherwise support components for communicating with the UE when the UE is operating in a connected mode. The communication manager 820 may be configured to or otherwise support components for sending a control message to the UE, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode. The communication manager 820 may be configured to or otherwise support components for sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0163] By including or configuring a communication manager 820 according to examples as described herein, a device 805 (e.g., a processor controlling a receiver 810, a transmitter 815, a communication manager 820, or a combination thereof or otherwise coupled thereto) may support techniques for TRS for power saving modes that may enable reduced processing, lower power consumption, and more efficient use of communication resources, among other advantages.

[0164] Fig. 9 A block diagram 900 of a device 905 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The device 905 may be an example of aspects of the device 805 or the network entity 105 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communication manager 920. The device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0165] The receiver 910 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be delivered to other components of the device 905. In some examples, the receiver 910 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 910 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0166] The transmitter 915 may provide a means for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of the device 905. For example, the transmitter 915 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 915 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 915 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 915 and the receiver 910 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0167] The device 905 or its various components may be examples of components for performing various aspects of TRS for energy saving mode as described herein. For example, the communication manager 920 may include a mode component 925, a configuration component 930, a reference signal component 935, or any combination thereof. The communication manager 920 may be an example of various aspects of the communication manager 820 as described herein. In some examples, the communication manager 920 or its various components may be configured to use or otherwise cooperate with the receiver 910, the transmitter 915, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 920 may receive information from the receiver 910, transmit information to the transmitter 915, or be integrated with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.

[0168] According to examples as disclosed herein, the communication manager 920 may support wireless communications at a network entity. The mode component 925 may be configured to or otherwise support components for communicating with the UE when the UE is operating in a connected mode. The configuration component 930 may be configured to or otherwise support components for sending a control message to the UE, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode. The reference signal component 935 may be configured to or otherwise support components for sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0169] Fig.10 A block diagram 1000 of a communication manager 1020 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The communication manager 1020 may be an example of aspects of the communication manager 820, the communication manager 920, or both as described herein. The communication manager 1020 or its various components may be examples of components for performing various aspects of TRS for energy saving mode as described herein. For example, the communication manager 1020 may include a mode component 1025, a configuration component 1030, a reference signal component 1035, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses), and the communication may include communication within a protocol layer of a protocol stack, communication associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105), or any combination thereof.

[0170] According to examples as disclosed herein, the communication manager 1020 may support wireless communications at a network entity. The mode component 1025 may be configured to or otherwise support components for communicating with the UE when the UE is operating in a connected mode. The configuration component 1030 may be configured to or otherwise support components for sending a control message to the UE, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode. The reference signal component 1035 may be configured to or otherwise support components for sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0171] In some examples, to support sending the control message, configuration component 1030 may be configured as or otherwise support components for sending the control message, the control message including an indication to the UE that the CSI-RS is to be used for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0172] In some examples, the control message further indicates a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration indicating one or more transmit power offsets between a CSI-RS transmit power and a synchronization signal block transmit power. In some examples, the one or more transmit power offsets include a corresponding transmit power offset for each of the one or more CSI-RS resource opportunities.

[0173] In some examples, configuration component 1030 may be configured as or otherwise support a component for sending a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities, wherein the control signal for paging message reception includes EPI or paging DCI.

[0174] In some examples, configuration component 1030 may be configured to or otherwise support components for sending a system information message indicating a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration being different from a previous CSI-RS resource configuration sent to the UE, wherein the system information message is sent before the UE transitions to the idle mode or the inactive mode or after the UE transitions to the idle mode or the inactive mode.

[0175] In some examples, configuration component 1030 may be configured as or otherwise support a component for sending a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities, wherein the control signal for paging message reception includes EPI or paging DCI.

[0176] In some examples, configuration component 1030 may be configured as or otherwise support components for sending a system information message indicating a set of multiple CSI-RS resource configurations, wherein the control message indicates a first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, and wherein the first CSI-RS resource configuration is used for one or more CSI-RS resource opportunities associated with the CSI-RS.

[0177] In some examples, configuration component 1030 may be configured as or otherwise support a component for sending a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration, wherein the control signal for paging message reception includes EPI or paging DCI.

[0178] In some examples, to support sending the control message, configuration component 1030 may be configured to or otherwise support components for sending the control message, the control message including an indication to the UE to exclude the CSI-RS as the TRS.

[0179] In some examples, configuration component 1030 may be configured to or otherwise support components for sending a configuration of one or more functions associated with the dynamic adaptation of the one or more communication parameters before the UE transitions to the idle mode or the inactive mode, wherein sending the control message indicating whether the UE is to use the CSI-RS as the TRS when the UE operates in the idle mode or the inactive mode is based on the configuration of the one or more functions.

[0180] Fig.11 A diagram of a system 1100 including a device 1105 supporting TRS for energy saving mode according to one or more aspects of the present disclosure is shown. The device 1105 may be an example of a device 805, a device 905, or a network entity 105 as described herein, or include components thereof. The device 1105 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1105 may include components that support output and acquisition of communications, such as a communication manager 1120, a transceiver 1110, an antenna 1115, a memory 1125, a code 1130, and a processor 1135. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1140).

[0181] As described herein, the transceiver 1110 may support bidirectional communication via a wired link, a wireless link, or both. In some examples, the transceiver 1110 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1110 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1105 may include one or more antennas 1115, which may be capable of sending or receiving wireless transmissions (e.g., concurrently). The transceiver 1110 may also include a modem for modulating a signal, thereby providing a modulated signal for transmission (e.g., via one or more antennas 1115, via a wired transmitter), for receiving a modulated signal (e.g., from one or more antennas 1115, from a wired receiver), and for demodulating a signal. In some implementations, the transceiver 1110 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1115 configured to support various receiving or obtaining operations, or one or more interfaces coupled to one or more antennas 1115 configured to support various transmitting operations or output operations, or a combination thereof. In some implementations, the transceiver 1110 may include or be configured to be coupled to one or more processors or memory components that are operable to: perform or support operations based on received or obtained information or signals; or generate information or other signals for transmission or other output, or any combination thereof. In some implementations, the transceiver 1110 or the transceiver 1110 and one or more antennas 1115 or the transceiver 1110 and one or more antennas 1115 and one or more processors or memory components (e.g., processor 1135 or memory 1125 or both) may be included in a chip or chip assembly installed in the device 1105. In some examples, the transceiver may be operable to support communications via one or more communication links (eg, communication link 125 , backhaul communication link 120 , midhaul communication link 162 , fronthaul communication link 168 ).

[0182] The memory 1125 may include RAM and ROM. The memory 1125 may store computer-readable, computer-executable code 1130 including instructions that, when executed by the processor 1135, cause the device 1105 to perform various functions described herein. The code 1130 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1130 may not be directly executable by the processor 1135, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 1125 may also include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0183] The processor 1135 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof). In some cases, the processor 1135 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1135. The processor 1135 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 1125) to enable the device 1105 to perform various functions (e.g., various functions or tasks of TRS supporting a power saving mode). For example, the device 1105 or a component of the device 1105 may include a processor 1135 and a memory 1125 coupled to the processor 1135, and the processor 1135 and the memory 1125 are configured to perform various functions described herein. The processor 1135 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software, such as an operating system, a virtual machine, or a container instance) that may host functions for performing the functions of the device 1105 (e.g., by executing code 1130). The processor 1135 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1105 (such as in the memory 1125). In some specific implementations, the processor 1135 may be a component of a processing system. A processing system may generally refer to a system or a series of machines or components that receive inputs and process these inputs to produce a set of outputs (which may be delivered to, for example, other systems or components of the device 1105). For example, the processing system of the device 1105 may refer to a system that includes various other components or subcomponents of the device 1105 (such as the processor 1135 or the transceiver 1110 or the communication manager 1120 or other components or combinations of components of the device 1105). The processing system of device 1105 may interface with other components of device 1105 and may process information (such as input or signals) received from other components or output information to other components. For example, a chip or modem of device 1105 may include a processing system and one or more interfaces for outputting information or for obtaining information or both. The one or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information, or the same interface configured to output information and obtain information, as well as other specific implementations. In some specific implementations, the one or more interfaces may refer to an interface between a processing system of a chip or modem and a transmitter, so that device 1105 can send information output from the chip or modem.Additionally or alternatively, in some implementations, the one or more interfaces may refer to an interface between a processing system of a chip or modem and a receiver, such that the device 1105 may obtain information or signal input, and the information may be passed to the processing system. One of ordinary skill in the art will readily recognize that the first interface may also obtain information or signal input, and the second interface may also output information or signal output.

[0184] In some examples, bus 1140 may support communications of protocol layers (e.g., within a protocol layer) of a protocol stack. In some examples, bus 1140 may support communications associated with logical channels of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within components of device 1105, or communications performed between different components of device 1105 that may be co-located or may be located in different locations (e.g., where device 1105 may refer to a system in which one or more of communication manager 1120, transceiver 1110, memory 1125, code 1130, and processor 1135 may be located in one component of different components or divided between different components).

[0185] In some examples, the communication manager 1120 may manage aspects of communications with the core network 130 (e.g., via one or more wired or wireless backhaul links). For example, the communication manager 1120 may manage the delivery of data communications for client devices, such as one or more UEs 115. In some examples, the communication manager 1120 may manage communications with other network entities 105 and may include a controller or scheduler for controlling communications with the UEs 115 in coordination with the other network entities 105. In some examples, the communication manager 1120 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0186] According to examples as disclosed herein, the communication manager 1120 may support wireless communications at a network entity. For example, the communication manager 1120 may be configured to or otherwise support components for communicating with the UE when the UE is operating in a connected mode. The communication manager 1120 may be configured to or otherwise support components for sending a control message to the UE, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode. The communication manager 1120 may be configured to or otherwise support components for sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0187] By including or configuring a communication manager 1120 according to the examples described herein, the device 1105 can support techniques for TRS for power saving modes that can achieve improved communication reliability, reduced latency, improved user experience associated with reduced processing, reduced power consumption, more efficient use of communication resources, improved coordination between devices, increased battery life, and improved utilization of processing power, among other advantages.

[0188] In some examples, the communication manager 1120 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1110, one or more antennas 1115 (e.g., where applicable), or any combination thereof. Although the communication manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1120 may be supported or performed by the transceiver 1110, the processor 1135, the memory 1125, the code 1130, or any combination thereof. For example, the code 1130 may include instructions that are executable by the processor 1135 to cause the device 1105 to perform various aspects of the TRS for power saving mode as described herein, or the processor 1135 and the memory 1125 may be otherwise configured to perform or support such operations.

[0189] Fig.12 A flowchart illustrating a method 1200 for supporting TRS for energy saving mode according to one or more aspects of the present disclosure is illustrated. The operations of the method 1200 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1200 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 7 The described UE 115 is performed. In some examples, the 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 use dedicated hardware to perform various aspects of the described functions.

[0190] At 1205, the method may include: when in connected mode, receiving a control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode. The operations of 1205 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed as described in reference to Figure 6 The described configuration component 625 is executed.

[0191] At 1210, the method may include: transitioning to the idle mode or the inactive mode. The operations of 1210 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1210 may be performed as described in reference to Figure 6 The described idle mode component 630 is executed.

[0192] At 1215, the method may include: when in the idle mode or the inactive mode, based on the control message, using the CSI-RS as the TRS to perform AGC or time / frequency tracking or both, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS. The operations of 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed as described in reference to Figure 6 The described reference signal component 635 is performed.

[0193] Fig.13 A flowchart illustrating a method 1300 for supporting tracking reference signals for energy saving mode according to one or more aspects of the present disclosure is illustrated. The operations of the method 1300 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a UE or a component thereof as described herein. Figures 1 to 7 The described UE 115 is performed. In some examples, the 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 use dedicated hardware to perform various aspects of the described functions.

[0194] At 1305, the method may include: while in connected mode, receiving a control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in idle mode or inactive mode. In some examples, the control message may also indicate a first CSI-RS resource configuration for the one or more CSI-RS resource opportunities. The operations of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed as described in reference to Figure 6 The described configuration component 625 is executed.

[0195] At 1310, the method may include: identifying one or more transmit power offsets between a CSI-RS transmit power and a synchronization signal block transmit power, the first CSI-RS resource configuration indicating the one or more transmit power offsets. The operations of 1310 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed as described in reference Figure 6 The described transmit power component 645 is performed.

[0196] At 1315, the method may include: transitioning to the idle mode or the inactive mode. The operations of 1315 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1315 may be performed as described in reference to Figure 6 The described idle mode component 630 is executed.

[0197] At 1320, the method may include: when in the idle mode or the inactive mode, based on the control message, using the CSI-RS as the tracking reference signal to perform AGC or time / frequency tracking or both, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the tracking reference signal, according to the control message and based on one or more CSI-RS resource opportunities associated with the CSI-RS, using the CSI-RS to perform the AGC or the time / frequency tracking or both. In some examples, using the CSI-RS to perform the AGC or the time / frequency tracking or both is based on the one or more transmit power offsets. The operations of 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by reference to Figure 6 The described reference signal component 635 is performed.

[0198] Fig.14 A flowchart illustrating a method 1400 for supporting tracking reference signals for energy saving mode according to one or more aspects of the present disclosure is illustrated. The operations of the method 1400 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE or a component thereof as described herein. Figures 1 to 7 The described UE 115 is performed. In some examples, the 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 use dedicated hardware to perform various aspects of the described functions.

[0199] At 1405, the method may include: while in connected mode, receiving a control message indicating whether the UE is to use a CSI reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode. The operations of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by Figure 6 The described configuration component 625 is executed.

[0200] At 1410, the method may include: transitioning to the idle mode or the inactive mode. The operations of 1410 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1410 may be performed as described in reference to Figure 6 The described idle mode component 630 is executed.

[0201] At 1415, the method may optionally include: receiving a system information message indicating a first CSI-RS resource configuration that is different from a previous CSI-RS resource configuration received by the UE and indicating the one or more CSI-RS resource opportunities. In some examples, the system information message indicating the first resource configuration may be received before the UE transitions to the idle mode or the inactive mode. The operations of 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed as described in reference to Figure 6 The described configuration component 625 is executed.

[0202] At 1420, the method may include: when in the idle mode or the inactive mode, based on the control message, using the CSI-RS as the tracking reference signal to perform AGC or time / frequency tracking or both, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the tracking reference signal, according to the control message and based on one or more CSI-RS resource opportunities associated with the CSI-RS, using the CSI-RS to perform the AGC or the time / frequency tracking or both, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both is based on the first CSI-RS resource configuration. The operations of 1420 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed by reference to Figure 6 The described reference signal component 635 is performed.

[0203] Fig.15 A flowchart illustrating a method 1500 for supporting tracking reference signals for energy saving mode according to one or more aspects of the present disclosure is illustrated. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described herein. Figures 1 to 7 The described UE 115 is performed. In some examples, the 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 use dedicated hardware to perform various aspects of the described functions.

[0204] At 1505, the method may include: while in connected mode, receiving a control message indicating whether the UE is to use a CSI reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by Figure 6 The described configuration component 625 is executed.

[0205] At 1510, the method may include: receiving a system information message indicating a set of multiple CSI-RS resource configurations. The operations of 1510 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Figure 6 The described configuration component 625 is executed.

[0206] At 1515, the method may include: transitioning to the idle mode or the inactive mode. The operations of 1515 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Figure 6 The described idle mode component 630 is executed.

[0207] At 1520, the method may include: executing. The operations of 1520 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1520 may be performed as described in reference Figure 6 The described reference signal component 635 is performed.

[0208] At 1525, the method may include: when in the idle mode or the inactive mode, based on the control message, using the CSI-RS as the tracking reference signal to perform AGC or time / frequency tracking or both, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the tracking reference signal, according to the control message and based on one or more CSI-RS resource opportunities associated with the CSI-RS, using the CSI-RS to perform the AGC or the time / frequency tracking or both. In some examples, using the CSI-RS to perform the AGC or the time / frequency tracking or both is based on a first CSI-RS resource configuration in the set of multiple CSI-RS resource configurations, the first CSI-RS resource configuration indicating the one or more CSI-RS resource opportunities. The operations of 1525 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1525 may be performed by reference to Figure 6 The described reference signal component 635 is performed.

[0209] Fig.16 A flowchart illustrating a method 1600 for supporting tracking reference signals for energy saving mode according to one or more aspects of the present disclosure is illustrated. The operations of the method 1600 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 3 and Figures 8 to 11 The network entity described herein may be executed by the network entity. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0210] At 1605, the method may include: communicating with the UE when the UE is operating in a connected mode. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed as described in reference Fig.10 The described mode component 1025 is executed.

[0211] At 1610, the method may include sending a control message to the UE indicating whether the UE is to use a CSI reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode. The operations of 1610 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by Fig.10 The described configuration component 1030 is executed.

[0212] At 1615, the method may include: transmitting the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is transmitted based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS. The operations of 1615 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference Fig.10 The described reference signal component 1035 is performed.

[0213] The following provides an overview of various aspects of the disclosure:

[0214] Aspect 1: A method for wireless communication at a UE, the method comprising: when in a connected mode, receiving a control message, the control message indicating whether the UE is to use a CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; transitioning to the idle mode or the inactive mode; and when in the idle mode or the inactive mode, using the CSI-RS as the TRS to perform AGC or time / frequency tracking or both based at least in part on the control message, the control message indicating that the UE is to use the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS.

[0215] Aspect 2: A method according to Aspect 1, wherein performing the AGC or the time / frequency tracking or both includes: using the CSI-RS to perform the AGC or the time / frequency tracking or both according to the control message and at least partially based on one or more CSI-RS resource opportunities associated with the CSI-RS.

[0216] Aspect 3: A method according to Aspect 2, wherein the control message also indicates a first CSI-RS resource configuration for the one or more CSI-RS resource opportunities, and the method further includes: identifying one or more transmit power offsets between the CSI-RS transmit power and the SSB transmit power, the first CSI-RS resource configuration indicating the one or more transmit power offsets, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both is at least partially based on the one or more transmit power offsets.

[0217] Aspect 4: The method according to aspect 3, wherein the one or more transmit power offsets include a corresponding transmit power offset for each CSI-RS resource opportunity in the one or more CSI-RS resource opportunities.

[0218] Aspect 5: According to the method described in any one of Aspects 3 to 4, the method further includes: receiving a control signal for receiving a paging message, the control signal indicating a CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities; and using the CSI-RS to perform additional AGC or additional time / frequency tracking or both based at least in part on the one or more other CSI-RS resource opportunities.

[0219] Aspect 6: The method according to aspect 5, wherein the control signal for paging message reception includes EPI or paging DCI.

[0220] Aspect 7: According to the method according to Aspect 2, the method also includes: receiving a system information message, the system information message indicating a first CSI-RS resource configuration, the first CSI-RS resource configuration is different from the previous CSI-RS resource configuration received by the UE and indicates the one or more CSI-RS resource opportunities, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both is at least partially based on the first CSI-RS resource configuration.

[0221] Aspect 8: The method according to aspect 7, wherein the system information message is received before transitioning to the idle mode or the inactive mode; or the system information message is received after transitioning to the idle mode or the inactive mode.

[0222] Aspect 9: According to the method described in any one of Aspects 7 to 8, the method further includes: receiving a control signal for receiving a paging message, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities; and using the CSI-RS to perform additional AGC or additional time / frequency tracking or both based at least in part on the one or more other CSI-RS resource opportunities.

[0223] Aspect 10: The method according to aspect 9, wherein the control signal for paging message reception comprises EPI or paging DCI.

[0224] Aspect 11: According to the method according to Aspect 2, the method also includes: receiving a system information message, the system information message indicating multiple CSI-RS resource configurations, wherein using the CSI-RS to perform the AGC or the time / frequency tracking or both is at least partially based on the first CSI-RS resource configuration among the multiple CSI-RS resource configurations, and the first CSI-RS resource configuration indicates the one or more CSI-RS resource opportunities.

[0225] Aspect 12: The method according to aspect 11, wherein the control message further indicates the first CSI-RS resource configuration among the multiple CSI-RS resource configurations.

[0226] Aspect 13: The method according to any one of Aspects 11 to 12, wherein the control message excludes an indication of a CSI-RS resource configuration among the multiple CSI-RS resource configurations, and the first CSI-RS resource configuration includes a default CSI-RS resource configuration.

[0227] Aspect 14: According to the method described in any one of Aspects 11 to 13, the method further includes: receiving a control signal for receiving a paging message, the control signal indicating a second CSI-RS resource configuration among the multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration; and using the CSI-RS to perform additional AGC or additional time / frequency tracking or both based at least in part on the second CSI-RS resource configuration.

[0228] Aspect 15: The method according to aspect 14, wherein the control signal for paging message reception comprises EPI or paging DCI.

[0229] Aspect 16: According to any one of Aspects 1 to 15, the method further includes: receiving a second control message, the second control message indicating that the UE is to exclude the use of the CSI-RS for the one or more functions, the one or more functions including using the CSI-RS as the TRS, and wherein performing the AGC or the time / frequency tracking or both includes: according to the second control message, using SSB to perform the AGC or the time / frequency tracking or both.

[0230] Aspect 17: According to the method described in any one of Aspects 1 to 16, the method further includes: before transitioning to the idle mode or the inactive mode, receiving the configuration of one or more functions associated with dynamic adaptation of one or more communication parameters, wherein the CSI-RS is used to perform the AGC or the time / frequency tracking or both based at least in part on the configuration of the one or more functions.

[0231] Aspect 18: The method according to any one of aspects 1 to 17, wherein the control message comprises an RRC message or a MAC-CE message.

[0232] Aspect 19: A method for wireless communication at a network entity, the method comprising: communicating with the UE when the UE is operating in a connected mode; sending a control message to the UE, the control message indicating whether the UE is to use the CSI-RS for one or more functions, the one or more functions including using the CSI-RS as a TRS when the UE is operating in an idle mode or an inactive mode; and sending the CSI-RS when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is sent at least in part based on dynamic adaptation of one or more communication parameters that modify the transmit power of the CSI-RS.

[0233] Aspect 20: A method according to Aspect 19, wherein sending the control message includes: sending the control message including an indication to the UE that the CSI-RS is to be used for the one or more functions, and the one or more functions include using the CSI-RS as the TRS.

[0234] Aspect 21: A method according to Aspect 20, wherein the control message also indicates a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration indicating one or more transmit power offsets between the CSI-RS transmit power and the SSB transmit power, the one or more transmit power offsets including a corresponding transmit power offset for each CSI-RS resource opportunity in the one or more CSI-RS resource opportunities.

[0235] Aspect 22: According to the method described in Aspect 21, the method further includes: sending a control signal for receiving a paging message, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities, wherein the control signal for receiving a paging message includes EPI or paging DCI.

[0236] Aspect 23: According to the method described in Aspect 20, the method further includes: sending a system information message, wherein the system information message indicates a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, and the first CSI-RS resource configuration is different from a previous CSI-RS resource configuration sent to the UE, wherein the system information message is sent before the UE transitions to the idle mode or the inactive mode or after the UE transitions to the idle mode or the inactive mode.

[0237] Aspect 24: According to the method described in Aspect 23, the method also includes: sending a control signal for receiving a paging message, the control signal indicating a CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities, wherein the control signal for receiving a paging message includes EPI or paging DCI.

[0238] Aspect 25: According to the method described in Aspect 20, the method also includes: sending a system information message, the system information message indicating multiple CSI-RS resource configurations, wherein the control message indicates a first CSI-RS resource configuration among the multiple CSI-RS resource configurations, and wherein the first CSI-RS resource configuration is used for one or more CSI-RS resource opportunities associated with the CSI-RS.

[0239] Aspect 26: According to the method described in Aspect 25, the method further includes: sending a control signal for receiving a paging message, the control signal indicating a second CSI-RS resource configuration among the multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration, wherein the control signal for receiving a paging message includes EPI or paging DCI.

[0240] Aspect 27: The method according to any one of aspects 19 to 26, wherein sending the control message comprises: sending the control message including an indication to the UE to exclude the CSI-RS as the TRS.

[0241] Aspect 28: According to the method described in any one of Aspects 19 to 27, the method further includes: before the UE transitions to the idle mode or the inactive mode, sending a configuration of one or more functions associated with the dynamic adaptation of the one or more communication parameters, wherein the control message sent indicating whether the UE is to use the CSI-RS as the TRS when the UE operates in the idle mode or the inactive mode is at least partially based on the configuration of the one or more functions.

[0242] Aspect 29: An apparatus for performing wireless communications at a UE, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 18.

[0243] Aspect 30: An apparatus for wireless communication at a UE, the apparatus comprising at least one component for performing a method according to any one of aspects 1 to 18.

[0244] Aspect 31: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 1 to 18.

[0245] Aspect 32: An apparatus for wireless communication at a network entity, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 19 to 28.

[0246] Aspect 33: An apparatus for wireless communication at a network entity, the apparatus comprising at least one component for performing a method according to any one of aspects 19 to 28.

[0247] Aspect 34: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform the method according to any one of aspects 19 to 28.

[0248] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and other implementations are possible. In addition, aspects of two or more of these methods may be combined.

[0249] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0250] The information and signals described herein may be represented using any of a variety of different technologies and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0251] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0252] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions may be stored as one or more instructions or codes of a computer-readable medium or sent using one or more instructions or codes of a computer-readable medium. Other examples and specific implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that the functions are implemented at different physical locations.

[0253] Computer-readable media include both non-transient computer storage media and communication media, including any media that facilitates the transfer of computer programs from one location to another. Non-transient storage media can be any available media that can be accessed by a general or special computer. By way of example and not limitation, non-transient computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or can be used to carry or store desired program code components in the form of instructions or data structures and any other non-transient media that can be accessed by a general or special computer or a general or special processor. Moreover, any connection is appropriately referred to as a computer-readable medium. For example, if the software is sent from a website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves, coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of computer-readable media. Disks and optical disks as used herein include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks can reproduce data magnetically, and optical disks can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0254] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Moreover, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on".

[0255] The term "determining" encompasses a variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, and the like. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Furthermore, "determining" may include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0256] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between the similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label, regardless of the second or other subsequent reference labels.

[0257] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." The specific embodiments include specific details to provide an understanding of the described technology. However, these technologies may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0258] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and a processor coupled to the memory and configured to: while in connected mode, receiving a control message indicating whether the UE is to use a channel state information (CSI) reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode; transitioning to the idle mode or the inactive mode; as well as When in the idle mode or the inactive mode, use the CSI-RS as the tracking reference signal to perform automatic gain control or time / frequency tracking or both based at least in part on the control message, wherein the control message indicates that the UE is to use the CSI-RS for the one or more functions, and the one or more functions include using the CSI-RS as the tracking reference signal.

2. The device according to claim 1, wherein: To perform the automatic gain control or the time / frequency tracking or both, the processor is further configured to: The automatic gain control or the time / frequency tracking, or both, are performed using the CSI-RS in accordance with the control message and based at least in part on one or more CSI-RS resource opportunities associated with the CSI-RS.

3. The apparatus of claim 2, wherein the control message further indicates a first CSI-RS resource configuration for the one or more CSI-RS resource opportunities, and the processor is further configured to: Identifying one or more transmit power offsets between a CSI-RS transmit power and a synchronization signal block transmit power, wherein the first CSI-RS resource configuration indicates the one or more transmit power offsets, wherein using the CSI-RS to perform the automatic gain control or the time / frequency tracking or both is at least partially based on the one or more transmit power offsets.

4. The apparatus of claim 3, wherein the one or more transmit power offsets comprise a respective transmit power offset for each of the one or more CSI-RS resource opportunities.

5. The apparatus of claim 3, wherein the processor is further configured to: receiving a control signal for paging message reception, the control signal indicating a CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities; and Based at least in part on the one or more other CSI-RS resource opportunities, additional automatic gain control or additional time / frequency tracking, or both, is performed using the CSI-RS.

6. The apparatus of claim 5, wherein the control signal for paging message reception comprises early paging indication or paging downlink control information.

7. The apparatus of claim 2, wherein the processor is further configured to: receiving a system information message indicating a first CSI-RS resource configuration, the first CSI-RS resource configuration being different from a previous CSI-RS resource configuration received by the UE and indicating the one or more CSI-RS resource opportunities, wherein using the CSI-RS to perform the automatic gain control or the time / frequency tracking, or both, is based at least in part on the first CSI-RS resource configuration.

8. The device according to claim 7, wherein: receiving the system information message before transitioning to the idle mode or the inactive mode; or The system information message is received after transitioning to the idle mode or the inactive mode.

9. The apparatus of claim 7, wherein the processor is further configured to: receiving a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, the one or more other CSI-RS resource opportunities covering the one or more CSI-RS resource opportunities; and Based at least in part on the one or more other CSI-RS resource opportunities, additional automatic gain control or additional time / frequency tracking, or both, is performed using the CSI-RS.

10. The apparatus of claim 9, wherein the control signal for paging message reception comprises early paging indication or paging downlink control information.

11. The apparatus of claim 2, wherein the processor is further configured to: A system information message is received, the system information message indicating a plurality of CSI-RS resource configurations, wherein using the CSI-RS to perform the automatic gain control or the time / frequency tracking or both is based at least in part on a first CSI-RS resource configuration of the plurality of CSI-RS resource configurations, the first CSI-RS resource configuration indicating the one or more CSI-RS resource opportunities. 12 . The apparatus according to claim 11 , wherein the control message further indicates the first CSI-RS resource configuration among the multiple CSI-RS resource configurations.

13. The apparatus according to claim 11, wherein the control message excludes indication of a CSI-RS resource configuration among the multiple CSI-RS resource configurations, and the first CSI-RS resource configuration comprises a default CSI-RS resource configuration.

14. The apparatus of claim 11, wherein the processor is further configured to: receiving a control signal for paging message reception, the control signal indicating a second CSI-RS resource configuration among the multiple CSI-RS resource configurations, the second CSI-RS resource configuration being different from the first CSI-RS resource configuration; and Based at least in part on the second CSI-RS resource configuration, additional automatic gain control or additional time / frequency tracking, or both, is performed using the CSI-RS.

15. The apparatus of claim 14, wherein the control signal for paging message reception comprises early paging indication or paging downlink control information.

16. The apparatus of claim 1, wherein the processor is further configured to: receiving a second control message indicating that the UE is to exclude use of the CSI-RS for the one or more functions, the one or more functions comprising using the CSI-RS as the tracking reference signal, and wherein performing the automatic gain control or the time / frequency tracking or both comprises: According to the second control message, the automatic gain control or the time / frequency tracking or both are performed using synchronization signal blocks.

17. The apparatus of claim 1, wherein the processor is further configured to: Prior to transitioning to the idle mode or the inactive mode, receiving a configuration of one or more functions associated with dynamic adaptation of one or more communication parameters, wherein the CSI-RS is used to perform the automatic gain control or the time / frequency tracking or both based at least in part on the configuration of the one or more functions.

18. The apparatus of claim 1, wherein the control message comprises a radio resource control (RRC) message or a medium access control (MAC) control element (MAC-CE) message.

19. An apparatus for wireless communication at a network entity, the apparatus comprising: Memory; and a processor coupled to the memory and configured to: communicating with a user equipment (UE) when the UE is operating in a connected mode; sending a control message to the UE, the control message indicating whether the UE is to use a channel state information (CSI) reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode; as well as The CSI-RS is transmitted when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is transmitted based at least in part on dynamic adaptation of one or more communication parameters that modify a transmit power of the CSI-RS.

20. The device according to claim 19, wherein In order to send the control message, the processor is further configured to: The control message is sent, the control message including an indication to the UE that the CSI-RS is to be used for the one or more functions, the one or more functions including using the CSI-RS as the tracking reference signal.

21. An apparatus according to claim 20, wherein the control message also indicates a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration indicating one or more transmit power offsets between the CSI-RS transmit power and the synchronization signal block transmit power, and wherein the one or more transmit power offsets include a corresponding transmit power offset for each CSI-RS resource opportunity in the one or more CSI-RS resource opportunities.

22. The apparatus of claim 21, wherein the processor is further configured to: A control signal for receiving a paging message is sent, wherein the control signal indicates a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, and the one or more other CSI-RS resource opportunities cover the one or more CSI-RS resource opportunities, wherein the control signal for receiving a paging message includes an early paging indication or paging downlink control information.

23. The apparatus of claim 20, wherein the processor is further configured to: and sending a system information message indicating a first CSI-RS resource configuration for one or more CSI-RS resource opportunities associated with the CSI-RS, the first CSI-RS resource configuration being different from a previous CSI-RS resource configuration sent to the UE, wherein the system information message is sent before the UE transitions to the idle mode or the inactive mode or after the UE transitions to the idle mode or the inactive mode.

24. The apparatus of claim 23, wherein the processor is further configured to: A control signal for receiving a paging message is sent, wherein the control signal indicates a second CSI-RS resource configuration for one or more other CSI-RS resource opportunities, and the one or more other CSI-RS resource opportunities cover the one or more CSI-RS resource opportunities, wherein the control signal for receiving a paging message includes an early paging indication or paging downlink control information.

25. The apparatus of claim 20, wherein the processor is further configured to: A system information message is sent, wherein the system information message indicates a plurality of CSI-RS resource configurations, wherein the control message indicates a first CSI-RS resource configuration among the plurality of CSI-RS resource configurations, and wherein the first CSI-RS resource configuration is used for one or more CSI-RS resource opportunities associated with the CSI-RS.

26. The apparatus of claim 25, wherein the processor is further configured to: A control signal for receiving a paging message is sent, wherein the control signal indicates a second CSI-RS resource configuration among the multiple CSI-RS resource configurations, and the second CSI-RS resource configuration is different from the first CSI-RS resource configuration, wherein the control signal for receiving a paging message includes an early paging indication or paging downlink control information.

27. The device according to claim 19, wherein In order to send the control message, the processor is further configured to: The control message is sent, wherein the control message includes an indication to the UE to exclude the CSI-RS as the tracking reference signal.

28. The apparatus of claim 19, wherein the processor is further configured to: Before the UE transitions to the idle mode or the inactive mode, a configuration of one or more functions associated with the dynamic adaptation of the one or more communication parameters is sent, wherein the control message indicating whether the UE is to use the CSI-RS as the tracking reference signal when the UE operates in the idle mode or the inactive mode is at least partially based on the configuration of the one or more functions.

29. A method for wireless communication at a user equipment (UE), the method comprising: while in connected mode, receiving a control message indicating whether the UE is to use a channel state information (CSI) reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode; transitioning to the idle mode or the inactive mode; as well as When in the idle mode or the inactive mode, use the CSI-RS as the tracking reference signal to perform automatic gain control or time / frequency tracking or both based at least in part on the control message, wherein the control message indicates that the UE is to use the CSI-RS for the one or more functions, and the one or more functions include using the CSI-RS as the tracking reference signal.

30. A method for wireless communication at a network entity, the method comprising: communicating with a user equipment (UE) when the UE is operating in a connected mode; sending a control message to the UE, the control message indicating whether the UE is to use a channel state information (CSI) reference signal (CSI-RS) for one or more functions, the one or more functions including using the CSI-RS as a tracking reference signal when the UE is operating in an idle mode or an inactive mode; as well as The CSI-RS is transmitted when the UE is in the idle mode or the inactive mode, wherein the CSI-RS is transmitted based at least in part on dynamic adaptation of one or more communication parameters that modify a transmit power of the CSI-RS.

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