Techniques for reference signal bundling in green communication networks

Abstract

Techniques and devices for wireless communication are described. A user equipment (UE) may receive a message from a network entity. The message may indicate that the network entity transitions from a first power mode to a second power mode. The first power mode may be associated with a phase continuity condition. The UE may determine a set of consecutive downlink messages sent from the network entity based on the received messages. Each downlink message in the determined set of consecutive downlink messages may occur during a respective time interval, and the phase continuity condition may be satisfied. The UE may use the determined set of consecutive downlink messages to estimate attributes of a channel for wireless communication between the UE and the network entity.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of Greek Patent Application No. 20220100400, entitled "TECHNIQUES FOR REFERENCE SIGNAL BUNDLING IN GREEN COMMUNICATION NETWORKS", filed by ABOTABL et al. on May 16, 2022, which is assigned to the assignee of this application. Technical Field

[0003] The present disclosure relates to wireless communication systems, including techniques for reference signal bundling in green communication networks. Background Art

[0004] 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).

[0005] A wireless multiple access communication system may include one or more network entities, each of which supports wireless communication of communication devices, which may be referred to as user equipment (UE). Some wireless communication systems may support a format for reporting channel state feedback, where the UE may perform channel estimation using a reference signal sent by the network entity. In some cases, existing techniques for performing channel estimation may be deficient. Summary of the invention

[0006] The described technology relates to improved devices and apparatuses that support technologies for reference signal bundling in green communication networks. For example, the described technology provides one or more enhancements for channel estimation in a wireless communication system. For example, a user equipment (UE) may receive a message from a network entity. The message may instruct the network entity to switch from a first power mode to a second power mode. The first power mode may be associated with a phase continuity condition. The UE may determine a set of continuous downlink messages sent from the network entity based on the received message. Each downlink message in the determined set of continuous downlink messages may occur during a corresponding time interval and may satisfy the phase continuity condition. The UE may use the determined set of continuous downlink messages to estimate the properties of a channel for wireless communication between the UE and the network entity. Therefore, the present disclosure may promote other possible benefits such as improved communication reliability and improved coordination between devices.

[0007] A method for wireless communication at a UE is described. The method may include: receiving a message from a network entity indicating that the network entity transitions from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition; and estimating a property of a channel used for wireless communication between the UE and the network entity using the determined set of consecutive downlink messages.

[0008] An apparatus for wireless communication at a UE 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: receive a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; determine a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition; and use the determined set of consecutive downlink messages to estimate properties of a channel used for wireless communication between the UE and the network entity.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; means for determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition; and means for estimating a property of a channel for wireless communication between the UE and the network entity using the determined set of consecutive downlink messages.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: receive a message from a network entity indicating that the network entity transitions from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; determine a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition; and estimate a property of a channel used for wireless communication between the UE and the network entity using the determined set of consecutive downlink messages.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message instructing a network entity to transition from a first power mode to a second power mode may include operations, features, components, or instructions for: receiving a control message from the network entity indicating that a downlink message sent from the network entity after the control message failed to meet a phase continuity condition, wherein a determined set of consecutive downlink messages does not include a downlink message sent from the network entity after the control message.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: determining a second set of consecutive downlink messages sent from a network entity based on a received control message, wherein the determined second set of consecutive downlink messages includes downlink messages sent from the network entity after the control message, and wherein each downlink message in the determined second set of consecutive downlink messages occurs during a corresponding time interval and satisfies a second phase continuity condition; and estimating properties of a channel used for wireless communication between the UE and the network entity using the determined second set of consecutive downlink messages.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message indicating a network entity transitioning from a first power mode to a second power mode may include operations, features, components, or instructions for: receiving a control message from the network entity indicating a continuous time interval during which downlink messages may be sent by the network entity when the network entity may operate in the first power mode, and wherein the determined set of continuous downlink messages includes downlink messages sent from the network entity during the indicated continuous time interval.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message indicating a network entity transitioning from a first power mode to a second power mode may include operations, features, components, or instructions for: receiving a control message from the network entity indicating a time interval during which downlink messages may be sent from the network entity when the network entity may operate in the second power mode, and wherein the determined set of consecutive downlink messages does not include a downlink message sent from the network entity during the indicated time interval.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a message indicating a network entity transitioning from a first power mode to a second power mode may include operations, features, components, or instructions for: receiving a control message from the network entity indicating a change in a transmission parameter of the network entity, and determining that the network entity transitions from the first power mode to the second power mode based on the indicated change in the transmission parameter of the network entity.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the transmission parameters of the network entity include frequency resource allocation used by the network entity for sending downlink messages, transmission power used by the network entity for sending downlink messages, spatial transmission relationships used by the network entity for sending downlink messages, the number of antenna ports used by the network entity for sending downlink messages, or a pre-decoder used by the network entity for sending downlink messages.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: receiving a control message from a network entity, the control message indicating a first set of power modes for the network entity and a second set of power modes for the network entity, wherein in the first set of power modes, downlink messages sent from the network entity satisfy a phase continuity condition, and in the second set of power modes, downlink messages sent from the network entity fail to satisfy the phase continuity condition.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first set of power modes includes the first power mode, and the second set of power modes includes the second power mode.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first group of power modes includes a first power mode and a second power mode, and the methods, apparatus, and non-transitory computer-readable media may also include operations, features, components, or instructions for the following actions: receiving a second control message indicating that a downlink message sent by a network entity after the second control message fails to meet a phase continuity condition, wherein the determined set of consecutive downlink messages does not include a downlink message sent by the network entity after the second control message.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the received second control message may be sent by the network entity via layer one (L1) signaling, layer two (L2) signaling, or layer three (L3) signaling.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, estimating a property of a channel may include operations, features, means, or instructions for performing one or more measurements on a set of multiple reference signals.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a set of a plurality of reference signals includes a positioning reference signal (PRS) or a demodulation reference signal (DMRS).

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the message includes a downlink control information (DCI) message.

[0024] A method for wireless communication at a network entity is described. The method may include: transitioning from a first power mode to a second power mode based on a traffic condition associated with the wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; and outputting a message instructing the network entity to transition from the first power mode to the second power mode.

[0025] 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: transition from a first power mode to a second power mode based on a traffic condition associated with wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; and output a message instructing the network entity to transition from the first power mode to the second power mode.

[0026] Another apparatus for wireless communication at a network entity is described. The apparatus may include: means for transitioning from a first power mode to a second power mode based on a traffic condition associated with the wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; and means for outputting a message instructing the network entity to transition from the first power mode to the second power mode.

[0027] 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: transition from a first power mode to a second power mode based on a traffic condition associated with wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; and output a message instructing the network entity to transition from the first power mode to the second power mode.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, outputting a message indicating that a network entity transitions from a first power mode to a second power mode may include operations, features, components, or instructions for the following actions: outputting a control message indicating that a downlink message output from the network entity after the control message fails to satisfy a phase continuity condition.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, outputting a message indicating a network entity transitioning from a first power mode to a second power mode may include operations, features, components, or instructions for: outputting a control message indicating continuous time intervals during which downlink messages can be output by the network entity when the network entity can operate in the first power mode.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, outputting a message indicating a network entity transitioning from a first power mode to a second power mode may include operations, features, components, or instructions for: outputting a control message indicating a time interval during which a downlink message can be output from the network entity when the network entity can operate in the second power mode.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, outputting a message indicating a transition of a network entity from a first power mode to a second power mode may include operations, features, components, or instructions for outputting a control message indicating a change in an output parameter of the network entity.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, output parameters of the network entity include frequency resource allocation used by the network entity for outputting downlink messages, power used by the network entity for outputting downlink messages, spatial relationships used by the network entity for outputting downlink messages, the number of antenna ports used by the network entity for outputting downlink messages, or a pre-decoder used by the network entity for outputting downlink messages.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for outputting a control message indicating a first set of power modes for a network entity and a second set of power modes for the network entity, wherein in the first set of power modes, downlink messages output from the network entity satisfy a phase continuity condition, and in the second set of power modes, downlink messages output from the network entity fail to satisfy the phase continuity condition.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first set of power modes includes the first power mode, and the second set of power modes includes the second power mode.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first group of power modes includes a first power mode and a second power mode, and the methods, apparatus, and non-transitory computer-readable media may also include operations, features, components, or instructions for the following actions: outputting a second control message indicating that a downlink message output by the network entity after the second control message fails to meet a phase continuity condition.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second control message may be output by the network entity via L1 signaling, L2 signaling, or L3 signaling. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 , Figure 2A and Figure 2B Each illustrates an example of a wireless communication system supporting a technique for reference signal bundling in a green communication network according to various aspects of the present disclosure.

[0038] Figure 3 An example of a transmission scheme supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is illustrated.

[0039] Figure 4 An example of a process flow supporting techniques for reference signal bundling in a green communication network in accordance with various aspects of the present disclosure is illustrated.

[0040] Figure 5 and Figure 6 A block diagram of a device supporting techniques for reference signal bundling in a green communication network is shown in accordance with various aspects of the present disclosure.

[0041] Figure 7 A block diagram of a communication manager supporting techniques for reference signal bundling in a green communication network is shown in accordance with various aspects of the present disclosure.

[0042] Figure 8 A diagram of a system including devices supporting techniques for reference signal bundling in a green communication network is shown in accordance with various aspects of the present disclosure.

[0043] Fig. 9 and Fig.10 A block diagram of a device supporting techniques for reference signal bundling in a green communication network is shown in accordance with various aspects of the present disclosure.

[0044] Fig.11 A block diagram of a communication manager supporting techniques for reference signal bundling in a green communication network is shown in accordance with various aspects of the present disclosure.

[0045] Fig.12 A diagram of a system including devices supporting techniques for reference signal bundling in a green communication network is shown in accordance with various aspects of the present disclosure.

[0046] Figures 13 to 17 A flow chart illustrating a method of supporting techniques for reference signal bundling in a green communication network in accordance with various aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0047] Some wireless communication systems may support beamforming operations for directional communications. For example, a wireless communication device operating within a wireless communication system may communicate via directional transmissions (e.g., beams), where beamforming (e.g., using one or more antenna elements) may be applied to form a beam in a certain direction. Beamforming involves a signal processing technique in which a transmitting communication device or a receiving communication device or both selects, shapes, or steers an antenna beam (e.g., a directional beam) along a spatial path between two communication devices (e.g., between a network entity and a user equipment (UE)). For example, a first communication device (e.g., a UE) may apply beamforming to form one or more beams (e.g., one or more uplink transmit beams or one or more downlink receive beams) for communicating with a second communication device (e.g., a network entity). In some examples, the beamforming applied by the UE may be based on channel estimation performed at the UE, for example, based on a reference signal sent by a network entity.

[0048] For example, a network entity may send a downlink message (e.g., including one or more reference signals) to a UE based on the same set of transmission parameters. In such an example, phase continuity across multiple downlink messages may be maintained so that the UE may process the downlink messages jointly (e.g., bundle them), thereby improving channel estimation (e.g., at the UE). However, in some examples, a network entity may switch between multiple (e.g., different) power modes associated with multiple (e.g., different) transmission parameters. For example, a network entity may change the transmission parameters (e.g., bandwidth, number of active antennas) used for downlink communications at a network entity, such as to save power while maintaining network operation. In some examples, by changing the transmission parameters used for downlink communications at a network entity, the phase continuity of the downlink communications may also be changed. For example, the phase continuity of a downlink message sent by a network entity based on a set of transmission parameters may be different from the phase continuity of a downlink message sent by a network entity based on another set of transmission parameters. Thus, the UE may not jointly process (eg, may not perform channel estimation on) a downlink message sent by a network entity across multiple groups (eg, different groups) of transmission parameters (eg, across multiple power modes).

[0049] Various aspects of the present disclosure relate to techniques for reference signal bundling in a green communication network, and more specifically to techniques for indicating whether phase continuity has been maintained across multiple downlink messages sent by a network entity. For example, a network entity may send a message to a UE indicating that the network entity is switching from a first power mode (e.g., associated with a set of transmission parameters, associated with a phase continuity condition) to a second power mode (e.g., associated with another set of transmission parameters). In some examples, based on the indication, a set of consecutive downlink messages that satisfy the phase continuity condition may be determined. That is, based on the indication, the UE may determine a set of consecutive downlink messages that may have been sent by the network entity based on the same set of transmission parameters, so that each downlink message in the set of consecutive downlink messages may satisfy the same phase continuity condition. In such an example, the UE may use the determined set of consecutive downlink messages to estimate properties of a channel used for wireless communication between the UE and the network entity (e.g., for channel estimation).

[0050] In some examples, the network entity may instruct the network entity to transition from the first power mode to the second power mode via control signaling. For example, the network may send control signaling to the UE indicating that downlink messages sent after the control signaling satisfy (or fail to satisfy) the same continuity condition. In some other examples, the control signaling may indicate a time interval during which downlink messages are sent by the network entity in a power mode (e.g., the first power mode or the second power mode). Additionally or alternatively, the control signaling may indicate a change in a transmission parameter of the network entity.

[0051] Various aspects of the subject matter described herein may be implemented to achieve one or more of the following potential advantages. For example, the techniques employed by the described communication device may provide benefits and enhancements to the operation of the communication device, including enabling a UE to determine whether a phase community of a downlink message sent by a network entity has been maintained. In some examples, operations performed by the described communication device may provide improvements to communication reliability within a wireless communication system. In some examples, operations performed by the described communication device to improve communication reliability within a wireless communication system may include sending an indication of whether a network entity has transitioned from a first power mode to a second power mode. In some other examples, operations performed by the described communication device may also support other possible benefits such as increased throughput and increased data rates.

[0052] Aspects of the disclosure are first described in the context of wireless communication systems. Aspects of the disclosure are also described in the context of transmission schemes and process flows. Aspects of the disclosure are further illustrated by apparatus diagrams, system diagrams, and flow diagrams relating to techniques for reference signal bundling in green communication networks, and are described with reference to these diagrams.

[0053] Figure 1 An example of a wireless communication system 100 supporting techniques for reference signal bundling in a green communication network according to various 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).

[0054] 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 names. 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), and the UE 115 and the network entity 105 may establish one or more communication links 125 over the coverage area. The coverage area 110 may be an example of a geographic area, and the network entity 105 and the UE 115 may support signal communications over the geographic area according to one or more radio access technologies (RATs).

[0055] 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 stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some UEs 115 are illustrated in FIG. 1 . The UE 115 described herein can communicate with various types of devices (such as Figure 1 Communicate with other UEs 115 or network entities 105) as shown.

[0056] 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.

[0057] In some examples, the network entities 105 can communicate with the core network 130, or communicate with each other, or both. For example, the network entity 105 can 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 can communicate with each other directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130) via the backhaul communication link 120 (e.g., according to X2, Xn or other interface protocols). In some examples, the network entities 105 can communicate with each other via the midhaul communication link 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication link 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, the midhaul communication link 162 or the fronthaul communication link 168 can 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), and other examples or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0058] 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, an 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 terms). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize a protocol stack that is physically or logically integrated within the network entity 105 (e.g., a single RAN node such as the base station 140).

[0059] 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)).

[0060] 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 DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between CU 160 and DU 165 or between DU 165 and RU 170 may be within the protocol layer (e.g., some functions of the protocol layer may be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by the other of CU 160, DU 165, or RU 170). CU 160 may be further functionally split into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions. CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and 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 based on interfaces (eg, channels) between layers of a protocol stack supported by respective network entities communicating over these communication links.

[0061] 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 the 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 host entities or IAB hosts. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a host network entity (e.g., a host base station). One or more network entities 105 (e.g., IAB hosts, host network entities) may communicate with additional one or more 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 DU 165 of a coupled IAB host. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) 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.

[0062] In the case 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 the techniques for reference signal bundling in a green communication network as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0063] 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 "device" may also be referred to as other examples such as a unit, a station, a terminal, or a client. 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 other examples such 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, which may be implemented in various objects such as appliances or vehicles, meters, and other examples.

[0064] 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, relay base stations, and other examples, such as Figure 1 shown.

[0065] 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) on one or more carriers. The term "carrier" may refer to a collection of RF spectrum resources having a defined physical layer structure 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 to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between a device 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 the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0066] The signal waveform sent on the carrier may be composed of 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 using MCM technology, 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 the more resource elements a device receives and the higher the order of the modulation scheme, the higher the data rate for the device may be. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers, beams), and the use of multiple spatial resources may increase the data rate or data integrity of communications with UE 115.

[0067] 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 T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum 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).

[0068] 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 multiple 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 multiple symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, the time slot may also be divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0069] A subframe, a time slot, a mini-time slot, or a symbol may be a minimum 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 number of symbol periods in a TTI) may be variable. Additionally or alternatively, the minimum scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0070] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier 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)) for a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a group 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 candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with the coded information for a control information format having a given payload size. The search space groups may include a common search space group configured for transmitting control information to a plurality of UEs 115 and a UE-specific search space group for transmitting control information to a corresponding one of the plurality of UEs 115 .

[0071] In some examples, the network entity 105 (e.g., base station 140, RU 170) can be mobile and thus provide communication coverage for coverage area 110, which can be a mobile coverage area. In some examples, multiple coverage areas 110, which can be associated with different technologies, can overlap, but can be supported by the same network entity (e.g., network entity 105). In some other examples, coverage areas 110 that can overlap and be associated with different technologies can be supported by different one or more network entities 105. The wireless communication system 100 can include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for coverage areas 110 using the same or different radio access technologies.

[0072] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports one-way 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 UE 115 include entering a power-saving deep sleep mode when not engaged in active communications, operating with 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 subcarrier or resource block (RB) set) within a carrier, within a guard band of a carrier, or outside a carrier.

[0073] 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 communication may include private communication or group communication, 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 applications or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency are used interchangeably herein.

[0074] In some examples, a UE 115 may be able to communicate 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 or 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, the network entity 105 may facilitate scheduling of resources for D2D communication. In some other examples, D2D communications may occur between UEs 115 without involving network entity 105 .

[0075] 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 for managing access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity for routing packets or interconnecting to an external network (e.g., a serving gateway (S-GW)), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a network entity 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be delivered via the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to an IP service 150 for 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.

[0076] 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). For example, the region of 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from about 1 decimeter to 1 meter long. 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 services to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using smaller frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0077] The wireless communication system 100 may utilize both licensed RF spectrum bands and unlicensed RF spectrum bands. For example, the wireless communication system 100 may employ license assisted access (LAA), unlicensed radio frequency spectrum band radio access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed RF spectrum band, devices such as the network entity 105 and the UE 115 may employ carrier sensing for conflict detection and avoidance. In some examples, operations in an unlicensed band may be based on a carrier aggregation configuration (e.g., LAA) in conjunction with component carriers operating in a licensed band. Operations in an unlicensed spectrum may include other examples such as downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions.

[0078] 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 that can 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 have an antenna array having a set of rows and columns of antenna ports that the network entity 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0079] 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 transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated via antenna elements of an antenna array so that some signals propagating at an orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements may include the transmitting 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 the antenna elements may be defined by a set of beamforming weights associated with an orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0080] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly to communicate on a logical channel. The MAC layer may perform priority processing and multiplexing of logical channels to transport channels. The MAC layer may also use error detection technology, error correction technology, or both to support retransmission at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer may provide the establishment, configuration, and maintenance of an RRC connection that supports a radio bearer for user plane data between a UE 115 and a network entity 105 or a core network 130. At the PHY layer, a transport channel may be mapped to a physical channel.

[0081] The wireless communication system 100 may support techniques for reference signal bundling in a green communication network. For example, UE 115 may receive a message from a network entity 105. The message may instruct the network entity 105 to switch from a first power mode to a second power mode. The first power mode may be associated with a phase continuity condition. UE 115 may determine a set of continuous downlink messages sent from the network entity 105 based on the received message. Each downlink message in the determined set of continuous downlink messages may occur during a corresponding time interval and may satisfy the phase continuity condition. UE 115 may use the determined set of continuous downlink messages to estimate the properties of a channel for wireless communication between UE 115 and network entity 105. In some examples, by instructing the network entity 105 to switch from a first power mode to a second power mode, the network entity 105 may provide other possible benefits such as one or more enhancements to channel estimation at UE 115.

[0082] Figure 2A and Figure 2B Each illustrates an example of a wireless communication system 200 that supports techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure. The wireless communication system 200 (e.g., the wireless communication system 200-a and the wireless communication system 200-b) can implement one or more aspects of the wireless communication system 100, or be implemented by the one or more aspects. For example, the wireless communication system 200-a and the wireless communication system 200-b can each include a network entity (e.g., the network entity 205-a and the network entity 205-b, respectively) and a UE (e.g., the UE 215-a and the UE 215-b, respectively), and the network entity and the UE can be as described in reference Figure 1 The network entity 205 and the UE 215 may communicate via one or more communication links 210 (eg, communication link 210-a and communication link 210-b), which may be as described in reference Figure 1 An example of a communication link 125 is described.

[0083] exist Figure 2A and Figure 2B In the example of Figure 1 Examples of CU 160, DU 165, RU 170 or base station 140 described herein. Additionally or alternatively, in Figure 2A and Figure 2B In the example of , communication link 210 may be an example of a downlink. Figure 2A and Figure 2BThe examples are described in the context of downlink communications, but it should be understood that the techniques for reference signal bundling in a green communication network as described herein can be applied to uplink communications, downlink communications, sidelink communications, or any combination thereof. For example, operations performed by one or two network entities in network entity 205 can be performed by one or two UEs in UE 215 (or one or more other communication devices), and operations performed by one or two UEs in UE 215 can be performed by one or two network entities in network entity 205 (or one or more other communication devices).

[0084] like Figure 2A As illustrated in the example of , a network entity 205-a (e.g., a transmitting device) can transmit multiple downlink messages 220 (e.g., downlink message 220-a, downlink message 220-b, and downlink message 220-c) to a UE 215-a (e.g., a receiving device) while maintaining phase continuity across the multiple downlink messages. For example, the network entity 205-a can transmit each of the multiple downlink messages 220 according to (e.g., using) the same set of transmission parameters, so that phase continuity across the multiple downlink messages 220 can be maintained. In some examples, the same set of parameters may include frequency resource allocation (e.g., one or more frequencies used to transmit the multiple downlink messages 220), transmit power, spatial transmission relationship (e.g., quasi-co-location relationship), the number of antenna ports, or precoding matrix, among other examples. That is, conditions for maintaining phase continuity across multiple downlink messages 220 (e.g., phase continuity conditions) may include using the same frequency resource allocation (e.g., the same one or more frequencies), the same transmit power, the same spatial transmit relationship (e.g., the same quasi-co-location relationship), the same number of antenna ports, or the same pre-decoding matrix across each downlink message in the downlink messages 220, among other examples.

[0085] In some examples, by using the same set of transmission parameters for each of a plurality of downlink messages 220, a UE 215-a (e.g., a receiving device) may jointly process the downlink messages 220, thereby improving a channel estimate 230-a (or another operation for estimating one or more properties of a communication channel) at the UE 15-a. For example, a downlink message 220 may include one or more reference signals 230 (e.g., a demodulation reference signal (DMRS), a positioning reference signal (PRS)). Thus, the receiving device (UE 215-a) may jointly process reference signals 230 (e.g., DMRS, PRS) included in a plurality of downlink messages 220 (e.g., a physical downlink shared channel (PDSCH) message or a physical downlink control channel (PDCCH) message). In some examples, the UE 215-a may avoid jointly processing reference signals of different channel types (e.g., may avoid jointly processing a PDSCH DMRS with a PDCCH DMRS).

[0086] In some examples, the network entity 205-a may be capable of operating in one or more power saving modes (e.g., power modes). For example, network power saving may occur during multiple (e.g., different) modes, where the network entity 205-a may perform operations (e.g., in a power saving mode) to save power while maintaining network operation. The network (e.g., network entity 205-a) may transition between power modes (e.g., switch between power modes) based on network input or traffic conditions (e.g., current traffic conditions), or both. In some examples, transitions between power modes may include adapting bandwidth or the number of active antennas (or both) that may affect RF transmission consistency (e.g., phase continuity). For example, under relatively low traffic conditions, the network may determine to operate in a power mode, where the network may suppress activation of a certain number (e.g., all) of antennas at the network (e.g., at the network entity 205-a or the network entity 205-b), thereby altering (e.g., changing) phase continuity associated with downlink transmissions at the network. Thus, downlink messages sent by the network entity 205-a before the phase continuity is altered may not be processed jointly with downlink messages sent by the network entity 205-a after the phase continuity is altered. In such an example, channel estimation performed at a receiving device (e.g., UE 215-a) may be degraded.

[0087] In some examples, techniques for reference signal bundling in a green communication network as described herein may provide one or more enhancements to channel estimation. For example, such techniques for reference signal bundling in a green communication network may enable the network entity 205 to indicate to the UE 215-a whether phase continuity of multiple downlink messages 220 sent by the network entity has been maintained. For example, in some green communication networks (e.g., wireless communication system 200-a), the network entity (e.g., network entity 205-a) may be configured with multiple power saving (e.g., sleep) modes. In such an example, the network entity 205-a may send a message to the UE 215-a indicating that the network entity is transitioning from a first power mode (e.g., a first power saving mode) to a second power mode (e.g., a second power saving mode). For example, the network entity 205-a may send a power mode transition indication 225-a to the UE 215-a. In some examples, the first power mode may be associated with a phase continuity condition (e.g., a set of transmission parameters). In some examples, based on the power mode transition indication 225-a, UE 215-a can determine a set of consecutive downlink messages (e.g., a set of downlink messages 220) that satisfy a phase continuity condition (e.g., that may have been sent according to the same set of transmission parameters). In such an example, UE 215-a can use the determined set of consecutive downlink messages to estimate one or more properties of a channel used for wireless communication between UE 215-a and network entity 205-a (e.g., perform channel estimation, perform positioning measurements). For example, based on the power mode transition indication 225-a, UE 215-a can determine that downlink message 220-a, downlink message 220-b, and downlink message 220-c satisfy the phase continuity condition. Therefore, UE 215-a can use downlink message 220-a, downlink message 220-b, and downlink message 220-c for channel estimation 230-a (or for performing one or more positioning measurements).

[0088] In some examples, the network entity 205-a may sequentially indicate to the UE 215-a whether a subsequent opportunity (e.g., a next opportunity, the next one or more downlink messages, one or more subsequently sent downlink messages) may be processed jointly (e.g., with a previously sent downlink message). In some examples (e.g., before sending a relatively last downlink message, before sending a relatively last DMRS bundle transmission, before sending a relatively last PRS bundle transmission), the network may send control signaling (such as downlink control information (DCI)) to the UE 215-a to indicate whether the next opportunity (e.g., the next one or more downlink messages, one or more subsequently sent downlink messages) may be a DMRS bundle (or a PRS bundle). Additionally or alternatively, the network entity 205-a may multiplex an indication of whether the next opportunity (e.g., the next one or more downlink messages, one or more subsequently sent downlink messages) may be a DMRS bundle (or a PRS bundle), for example, with a PDSCH transmission.

[0089] In some other examples (e.g., after sending a relatively last downlink message, after sending a relatively last DMRS bundle transmission), the network may send a DCI to the UE 215-a to indicate whether active DMRS bundling can be maintained. For example, the network entity 205-a may send a DCI indicating a change in DMRS bundling, configured grants, dynamic grants, periodic channel state information reference signal (CSI-RS), or multiple PDSCH messages, among other examples. That is, the network entity 205-a may send an indication of whether phase continuity of multiple downlink messages 220 is to be maintained by the network entity 205-a. For example, the network entity 205-a may send a control message (e.g., a DCI) indicating that one or more downlink messages 220 sent from the network entity 205-a after the control message failed to maintain phase continuity (e.g., failed to meet a phase continuity condition).

[0090] In some examples, changes in bandwidth, number of antenna ports, or transmit power (or some combination thereof) at network entity 205-b may result in changes in RF transmit consistency or changes in the channel impulse response (e.g., of certain states, certain power saving modes) of downlink messages sent by network entity 205-b. Thus, if network entity 205-b switches from one power mode to another, causing a change in one or more transmit parameters (e.g., bandwidth, number of antenna ports, transmit power) of network entity 205-b, phase continuity (e.g., of some DMRS bundles) may not be maintained. Figure 2BAs illustrated in the example of , the network entity 205-b may send a power mode transition indication 225-b to the UE 215-b, which may indicate that the network entity transitions from a first power mode to a second power mode (e.g., may indicate that a subsequent downlink message fails to satisfy a phase continuity condition). In this example, based on the power mode transition indication 225-b, the UE 215-b may determine that a set of consecutive downlink messages that satisfy the phase continuity condition (e.g., and may be used to estimate one or more properties of a channel) include downlink message 220-d and downlink message 220-e and do not include downlink message 220-f (e.g., a downlink message sent after the power mode transition indication 225-b). In this example, the UE 215-b may use the determined set of consecutive downlink messages to estimate the properties of a channel for wireless communication between the UE 215-b and the network entity 205-b. For example, the UE 215-b may use the downlink message 220-d and the downlink message 220-e for channel estimation 230-b.

[0091] although Figure 2B The example of illustrates that the power mode transition indication 225-b is sent before the downlink message 220-f (e.g., a downlink message in which phase continuity may not be maintained), but it should be understood that the power mode transition indication 225-b can be sent before, after, or concurrently with one or more downlink messages 220. For example, the power mode transition indication 225-b can be an example of a cancellation indication or a preemption indication. In some examples, the network entity 205-b can send (e.g., via DCI) a downlink (or uplink) cancellation indication or a downlink preemption indication that can cancel the downlink DMRS bundling of one or more of the configured granted transmissions. For example, the network entity 205-b can send a control message (e.g., DCI) indicating a time interval during which the downlink message sent from the network entity failed to maintain phase continuity (e.g., failed to meet the phase continuity condition). In some examples, the downlink (or uplink) cancellation indication can include a time slot index of the downlink message (or reference signal, such as DMRS) that can be bundled. That is, the network entity 205-b may send a control message indicating consecutive time intervals during which downlink messages sent by the network entity 205-b maintain phase continuity (eg, satisfy a phase continuity condition).

[0092] In some examples, an indication of a power mode change (e.g., a power state change) or a communication state change may (e.g., inherently) indicate a power saving mode change, which may include a change in one or more parameters (e.g., a change in bandwidth, transmit power, or number of antennas) and may result in a change in phase consistency (e.g., a phase continuity condition). For example, network entity 205-b may indicate a change in transmit antennas at network entity 205-b (e.g., from approximately 62 antennas to approximately 32 antennas) or a change in transmit power of network entity 205-b, which may affect channel estimation (e.g., an estimate of one or more properties of a communication channel). That is, downlink messages sent using different numbers of transmit antennas or at different transmit powers may result in different channel estimation results and may therefore not be combined. Therefore, an indication of a power mode change (e.g., a power state change) or an indication of a change in one or more transmit parameters may indicate to UE215-b to cancel (or postpone) DMRS bundling (or PRS bundling).

[0093] For example, the network may send a control message indicating a change in a transmission parameter of the network entity 205-b. In such an example, the UE may determine that the network entity 205-b switches from a first power mode to a second power mode based on the indication. In some examples, the UE 215-b may be able to perform partial DMRS bundling. For example, if the UE 215-b determines a change in the power mode at the network entity 205-b, the UE 215-b may perform partial bundling cancellation, where the UE 215-b may perform DMRS bundling within the power mode (e.g., and may avoid performing DMRS bundling across multiple power modes). In some examples, by determining whether the network entity 205-b switches between power modes (e.g., changes from one power mode to another power mode), the UE 215-b may provide one or more enhancements to the channel estimation at the UE 215-b, among other possible benefits.

[0094] Figure 3 An example of a transmission scheme 300 supporting a technique for reference signal bundling in a green communication network according to various aspects of the present disclosure is illustrated. The transmission scheme 300 may implement or be implemented by one or more aspects of the wireless communication system 100 and the wireless communication system 200. For example, the transmission scheme 300 may be implemented by a network entity and a UE, which may be a reference signal bundling system. Figure 1 , Figure 2A and Figure 2B Examples of corresponding devices described. Figure 3 In the example of Figure 1Examples of CU 160, DU 165, RU 170, or base station 140 are described. Additionally or alternatively, in Figure 3 In the example of , operations performed by the network entity may be performed by the UE (or one or more other communication devices), and operations performed by the UE may be performed by the network entity (or one or more other communication devices).

[0095] In some wireless communication systems, a network entity may change the number of transmit antennas (or one or more other transmit parameters) used at the network entity for power saving (e.g., for downlink communication), which may result in a change in the estimated properties of the communication channel (e.g., an equivalent channel change). For example, by changing the number of transmit antennas (or one or more other transmit parameters) used by the network entity for sending downlink messages, a device (e.g., a UE) receiving the downlink message may experience (e.g., detect) a change in the communication channel on which the downlink message is sent. Thus, the UE may avoid using the downlink message to estimate one or more properties of the communication channel. That is, if the network entity switches from one power mode to another power mode, causing the number of transmit antennas (or another transmit parameter) used by the network entity to change, then at the time during which multiple downlink messages (e.g., DMRS bundled transmission, multiple downlink CSI-RS) are sent by the network entity, the UE (e.g., a receiving device) may avoid combining (e.g., bundling, jointly processing) the downlink messages (e.g., channels across DMRS bundled transmissions, channels across multiple downlink CSI-RS).

[0096] For example, to avoid increased power consumption at the UE (e.g., to avoid wasting power at the UE), to maintain an activation state of one or more power amplifiers at the UE (e.g., to keep the power amplifiers at the UE turned on), to maintain phase continuity, to store and attempt to combine downlink channels (e.g., unrelated downlink channels), or for the network entity to store and attempt to combine uplink channels (e.g., unrelated uplink channels), both the network entity and the UE may communicate (e.g., obtain, exchange) the position of one or more downlink messages within a group of downlink messages (e.g., the position of one or more uplink messages within a group of uplink messages, the position within a bundled transmission) based on one or more maintained transmission parameters (e.g., time, frequency, precoding, spatial filter, number of antennas). In such an example (e.g., by communicating the position of one or more downlink messages within a group of downlink messages), the UE (or network entity) may restart (e.g., resume, continue) the group of downlink messages (e.g., bundle) after a change in the power mode at the network entity (e.g., a power saving change). For example, downlink message transmissions before a change in power mode may be included in one group (e.g., one bundle), and downlink message transmissions after the change in power mode may be included in another group (e.g., a different group, a different bundle). That is, transmissions before a power mode change may be included in one bundled set of transmissions, and transmissions after a power mode change may be included in another bundle. Thus, by indicating a power mode change (or a communication state change associated with a power mode, or a power saving power configuration mode change), the UE (or network entity) may determine which transmissions (e.g., downlink messages) to include in a bundle (e.g., which transmissions may be processed jointly).

[0097] like Figure 3As illustrated in the example of , the UE may determine to use (or be configured to) multiple downlink messages sent by the network entity (e.g., on the channel) for channel estimation (e.g., for estimating one or more properties of the communication channel). For example, the network entity may send multiple downlink messages (e.g., multiples of the first downlink message 320 and the second downlink message 321). In some examples, the network entity may send multiples of the first downlink message 320 (e.g., the first downlink message 320-a and the first downlink message 320-b) according to a set of transmission parameters (e.g., in the first power mode associated with the first phase continuity condition). The network entity may switch from a first power mode (e.g., associated with the first phase continuity condition) to a second power mode associated with the second phase continuity condition (e.g., the network entity may change one or more parameters used by the network entity for sending downlink messages). Therefore, the network entity may send an indication to the UE indicating that the network entity switches from the first power mode to the second power mode (e.g., a power mode transition indication 310). For example, the network entity may send a sleep mode change indication or DCI to restart bundling for one or more groups of downlink messages (e.g., one or more active bundles, one or more groups of scheduled downlink messages). In response to receiving the power mode transition indication 310, the UE may determine to include (e.g., bundle, combine) the first downlink message 320-a and the first downlink message 320-b in the first group of downlink messages 305. Each first downlink message 320 included in the first group of downlink messages 305 may be sent according to the same set of transmission parameters (e.g., the first phase continuity condition may be satisfied). Therefore, in some examples, the UE may use the first group of downlink messages 305 (e.g., the DMRS or CSI-RS included in the first group of downlink messages 305) for estimating one or more properties of the channel.

[0098] In some examples, the network entity may (e.g., after transmitting the power mode transition indication 310) transmit other downlink messages (e.g., second downlink message 321-a, second downlink message 321-b, second downlink message 321-c, and second downlink message 321-d) to the UE in the second power mode associated with the second phase continuity condition (e.g., according to another set of transmission parameters). In such examples, the UE may determine to include (e.g., bundle, combine) the second downlink message 321-a, the second downlink message 321-b, the second downlink message 321-c, and the second downlink message 321-d in the second group of downlink messages 306. That is, the UE may determine to resume (e.g., restart) the bundled downlink messages after receiving the power mode transition indication 310.

[0099] For example, if the UE determines a change in the transmit power (or one or more other transmit parameters) of the first group of downlink messages 305 (e.g., the first bundle), the UE may restart a group of downlink messages (e.g., a DMRS bundle) based on the power configuration (e.g., transmit parameters) used during the second power saving mode. In some examples, each second downlink message in the second downlink message 321 included in the second group of downlink messages 306 may be sent according to the same set of parameters (e.g., the second phase continuity condition may be satisfied). Thus, the UE may use the second group of downlink messages 306 (e.g., the DMRS or CSI-RS included in the first group of downlink messages 305) for estimating one or more properties of the channel. In some examples, by resuming bundling after receiving the power mode transition indication 310, the UE may reduce power loss and improve the performance of wireless communication at the UE, among other possible examples.

[0100] Figure 4 An example of a process flow 400 for supporting techniques for reference signal bundling in a green communication network in accordance with various aspects of the present disclosure is illustrated. In some examples, the process flow 400 may include exemplary operations associated with a UE 415 and a network entity 405, which may be a reference signal bundling network. Figure 1 , Figure 2A and Figure 2B Examples of corresponding devices described. Figure 4 In the example of Figure 1 Examples of CU 160, DU 165, RU 170, or base station 140 are described. The operations performed by UE 415 and network entity 405 may support other benefits such as improved communication between one or both UEs in UE 415 and the network. In the following description of process flow 400, the operations between UE 415 and network entity 405 may occur in a different order or at a different time than shown. Some operations may also be omitted from process flow 400, and other operations may be added to process flow 400.

[0101] In some wireless communication systems, the network entity 405 may transition between multiple power saving modes (e.g., power modes) such that the transmission parameters used by the network entity 405 (e.g., for transmitting downlink messages) may change and result in a change in the phase continuity of the downlink messages. In some examples, the network entity 405 may communicate the change in the power mode at the network entity 405 to the UE 415. For example, at 420, the UE 415 may receive a control message indicating a first set of power modes for the network entity 405, wherein downlink messages transmitted from the network entity 405 may satisfy the phase continuity condition (e.g., may be associated with the same set of transmission parameters). Additionally or alternatively, the control message (e.g., sent at 420) may indicate a second set of power modes for the network entity 405, wherein downlink messages transmitted from the network entity 405 may fail to satisfy the phase continuity condition (e.g., may be associated with one or more other sets of transmission parameters). That is, in some examples, as part of the power saving state configuration, the network entity 405 may indicate whether downlink bundling may be maintained (or whether downlink bundling may be disabled or enabled) within each of a plurality of power saving modes supported by the network entity 405. Thus, the network entity 405 may configure the UE 415 (e.g., via one or more RRC parameters, control messages) using an association (e.g., mapping) between a communication state and a power mode (e.g., a power saving mode), or may send an indication of a plurality of power modes that identifies whether each power mode provides (e.g., allows) downlink bundling. In such an example, the UE 415 may determine whether a downlink message sent by the network entity 405 satisfies the same phase continuity condition based on the power mode used at the network entity 405 (e.g., the power mode indicated to the UE 415). In some examples, such as for some power modes (e.g., some communication states, some energy saving states) in which downlink bundling can be supported by network entity 405, network entity 405 can send an indication (e.g., via layer one (L1), layer 2 (L2), or layer 3 (L3) signaling) to cancel (e.g., suspend) bundling or disable one or more bundles. Thus, if the power mode (e.g., state) supports bundling, the bundling feature can be canceled via the indication.

[0102] For example, at 425, the network entity 405 can send one or more downlink messages to the UE 415. In some examples, at 425, the network entity 405 can send the one or more downlink messages according to a first power mode associated with a set of transmission parameters (e.g., associated with a phase continuity condition). At 430, the network entity 405 can transition from the first power mode to the second power mode (e.g., based on traffic conditions associated with wireless communications at the network entity satisfying a threshold for relatively low traffic conditions). At 430, the network entity 405 can send a power mode transition indication to the UE 415.

[0103] The power mode transition indication may be as shown in reference Figure 2A , Figure 2B and Figure 3 Examples of power mode transition indications described herein. For example, the power mode transition indication may indicate that the network entity 405 transitions from a first power mode to a second power mode. In some examples, the power mode transition indication may indicate that a downlink message sent after the power mode transition indication fails to meet a phase continuity condition. In some other examples, the power mode transition indication may indicate a time interval during which downlink messages are sent by the network entity 405 when the network entity 405 may operate in the first power mode (or in the second power mode). Additionally or alternatively, the power mode transition indication may indicate a change in a transmission parameter of the network entity.

[0104] At 440, UE 415 may determine a set of consecutive downlink messages sent from network entity 405 based on the received power mode transition indication. The determined set of consecutive downlink messages may be as shown in FIG. Figure 2A , Figure 2B and Figure 3 An example of a set of downlink messages described. For example, each downlink message in the determined set of consecutive downlink messages can occur during a corresponding time interval and can satisfy a phase continuity condition associated with the first power mode. At 445, UE 415 can use the determined set of consecutive downlink messages to estimate properties of a channel for wireless communication between UE 415 and network entity 405. In some examples, by sending a power mode transition indication to UE 415 (e.g., at 435), network entity 405 can provide other possible benefits such as increased communication reliability between UE 415 and network entity 405.

[0105] Figure 5A block diagram 500 of a device 505 supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. The device 505 can be an example of various aspects of the 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).

[0106] The receiver 510 may provide means for receiving information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reference signal bundling in green communication networks), user data, control information, or any combination thereof. The information may be communicated to other components of the device 505. The receiver 510 may utilize a single antenna or a set of multiple antennas.

[0107] The transmitter 515 may provide a means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reference signal bundling in green communication networks), 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 component. The transmitter 515 may utilize a single antenna or a set of multiple antennas.

[0108] The communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof, or various components thereof may be examples of means for performing various aspects of the techniques for reference signal bundling in a green communication network as described herein. For example, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may support methods for performing one or more of the functions described herein.

[0109] In some examples, the communication manager 520, the receiver 510, the transmitter 515, 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 means 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).

[0110] Additionally or alternatively, in some examples, the communication manager 520, the receiver 510, the transmitter 515, 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 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting means for performing the functionality 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.

[0111] In some examples, communication manager 520 can 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 can receive information from receiver 510, transmit information to transmitter 515, or be integrated in conjunction with receiver 510, transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.

[0112] According to examples as disclosed herein, the communication manager 520 may support wireless communications at a UE (e.g., device 505). For example, the communication manager 520 may be configured to or otherwise support components for the following actions: receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition. The communication manager 520 may be configured to or otherwise support components for the following actions: determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition. The communication manager 520 may be configured to or otherwise support components for the following actions: using the determined set of consecutive downlink messages to estimate properties of a channel used for wireless communications between the UE and the network entity.

[0113] By including or configuring a communication manager 520 according to the examples described herein, a device 505 (e.g., a processor controlling or otherwise coupled to a receiver 510, a transmitter 515, a communication manager 520, or a combination thereof) may support techniques for reducing processing, reducing power consumption, and more efficiently utilizing communication resources.

[0114] Figure 6A block diagram 600 of a device 605 supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 or UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0115] The receiver 610 may provide means for receiving information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reference signal bundling in green communication networks), user data, control information, or any combination thereof. The information may be communicated to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.

[0116] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reference signal bundling in green communication networks), user data, control information, or any combination thereof. In some examples, the transmitter 615 may be co-located with the receiver 610 in a transceiver component. The transmitter 615 may utilize a single antenna or a set of multiple antennas.

[0117] Device 605 or its various components may be examples of components for performing various aspects of the techniques for reference signal bundling in a green communication network as described herein. For example, communication manager 620 may include power mode component 625, downlink message component 630, channel estimation component 635, or any combination thereof. Communication manager 620 may be an example of various aspects of communication manager 520 as described herein. In some examples, communication manager 620 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 610, transmitter 615, or both. For example, communication manager 620 may receive information from receiver 610, transmit information to transmitter 615, or be integrated in combination with receiver 610, transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0118] According to examples as disclosed herein, the communication manager 620 may support wireless communications at a UE (e.g., device 605). The power mode component 625 may be configured to or otherwise support components for receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition. The downlink message component 630 may be configured to or otherwise support components for determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition. The channel estimation component 635 may be configured to or otherwise support components for estimating properties of a channel for wireless communications between the UE and the network entity using the determined set of consecutive downlink messages.

[0119] Figure 7 A block diagram 700 of a communication manager 720 supporting techniques for reference signal bundling in a green communication network in accordance with various aspects of the present disclosure is shown. The communication manager 720 may be an example of aspects of the communication manager 520, the communication manager 620, or both as described herein. The communication manager 720 or its various components may be examples of components for performing various aspects of the techniques for reference signal bundling in a green communication network as described herein. For example, the communication manager 720 may include a power mode component 725, a downlink message component 730, a channel estimation component 735, a time interval component 740, a transmission parameter component 745, a phase continuity component 750, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses).

[0120] According to examples as disclosed herein, the communication manager 720 may support wireless communication at the UE. The power mode component 725 may be configured to or otherwise support components for the following actions: receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition. The downlink message component 730 may be configured to or otherwise support components for the following actions: determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition. The channel estimation component 735 may be configured to or otherwise support components for the following actions: using the determined set of consecutive downlink messages to estimate the properties of a channel used for wireless communication between the UE and the network entity.

[0121] In some examples, to support receiving a message indicating that a network entity transitions from a first power mode to a second power mode, the power mode component 725 may be configured to or otherwise support components for: receiving a control message from a network entity indicating that a downlink message sent from the network entity after the control message fails to satisfy a phase continuity condition, wherein a determined set of consecutive downlink messages does not include a downlink message sent from the network entity after the control message.

[0122] In some examples, the downlink message component 730 may be configured to or otherwise support means for determining a second set of consecutive downlink messages sent from the network entity based on the received control message, wherein the determined second set of consecutive downlink messages includes downlink messages sent from the network entity after the control message, and wherein each downlink message in the determined second set of consecutive downlink messages occurs during a corresponding time interval and satisfies a second phase continuity condition. In some examples, the channel estimation component 735 may be configured to or otherwise support means for estimating properties of a channel used for wireless communication between the UE and the network entity using the determined second set of consecutive downlink messages.

[0123] In some examples, to support receiving a message indicating that a network entity is transitioning from a first power mode to a second power mode, the time interval component 740 may be configured as or otherwise support components for: receiving a control message from a network entity indicating a continuous time interval during which downlink messages are sent by the network entity when the network entity is operating in the first power mode, and wherein the determined set of continuous downlink messages includes downlink messages sent from the network entity during the indicated continuous time interval.

[0124] In some examples, to support receiving a message indicating that a network entity is transitioning from a first power mode to a second power mode, the time interval component 740 may be configured as or otherwise support a component for: receiving a control message from the network entity indicating a time interval during which downlink messages are sent from the network entity when the network entity is operating in the second power mode, and wherein the determined set of consecutive downlink messages does not include downlink messages sent from the network entity during the indicated time interval.

[0125] In some examples, to support receiving a message indicating that the network entity is transitioning from a first power mode to a second power mode, the transmit parameter component 745 may be configured or otherwise support means for receiving a control message from the network entity indicating a change in a transmit parameter of the network entity. In some examples, to support receiving a message indicating that the network entity is transitioning from a first power mode to a second power mode, the transmit parameter component 745 may be configured or otherwise support means for determining that the network entity is transitioning from the first power mode to the second power mode based on the indicated change in the transmit parameter of the network entity.

[0126] In some examples, the transmission parameters of the network entity include frequency resource allocation used by the network entity to send downlink messages, transmission power used by the network entity to send downlink messages, spatial transmission relationships used by the network entity to send downlink messages, the number of antenna ports used by the network entity to send downlink messages, or a predecoder used by the network entity to send downlink messages.

[0127] In some examples, phase continuity component 750 can be configured to or otherwise support means for receiving a control message from a network entity, the control message indicating a first set of power modes for the network entity and a second set of power modes for the network entity, wherein in the first set of power modes, downlink messages sent from the network entity satisfy a phase continuity condition, and in the second set of power modes, downlink messages sent from the network entity fail to satisfy the phase continuity condition. In some examples, the first set of power modes includes a first power mode, and the second set of power modes includes a second power mode.

[0128] In some examples, the first group of power modes includes a first power mode and a second power mode, and the phase continuity component 750 can be configured as or otherwise support a component for the following actions: receiving a second control message indicating that a downlink message sent by the network entity after the second control message failed to meet a phase continuity condition, wherein the determined set of consecutive downlink messages does not include a downlink message sent by the network entity after the second control message.

[0129] In some examples, the received second control message is sent by the network entity via L1 signaling, L2 signaling, or L3 signaling. In some examples, to support estimating properties of the channel, the channel estimation component 735 can be configured as or otherwise support means for performing one or more measurements on a set of multiple reference signals. In some examples, the set of multiple reference signals includes a PRS or a DMRS. In some examples, the message includes a DCI message.

[0130] Figure 8 A diagram of a system 800 including a device 805 supporting techniques for reference signal bundling in a green communication network in accordance with various aspects of the present disclosure is shown. The device 805 may be an example of a device 505, a device 605, or a UE 115 as described herein, or include components of these devices. The device 805 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, a memory 830, a code 835, and a processor 840. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 845).

[0131] I / O controller 810 can manage input and output signals of device 805. I / O controller 810 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 810 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 810 can utilize an operating system such as or another known operating system. Additionally or alternatively, I / O controller 810 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 810 may be implemented as part of a processor such as processor 840. In some cases, a user may interact with device 805 via I / O controller 810 or via hardware components controlled by I / O controller 810.

[0132] In some cases, the device 805 may include an antenna 825. However, in some other cases, the device 805 may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bidirectionally via one or more antennas 825, a wired link, or a wireless link as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 815 may also include a modem for modulating packets, providing the modulated packets to one or more antennas 825 for transmission, and for demodulating packets received from one or more antennas 825. The transceiver 815, or the transceiver 815 and one or more antennas 825 may be examples of transmitters 515, transmitters 615, receivers 510, receivers 610, or any combination thereof or any components thereof as described herein.

[0133] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code (e.g., code 835) including instructions that, when executed by the processor 840, cause the device 805 to perform various functions described herein. The code 835 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 835 may not be directly executable by the processor 840, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 830 may include, 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.

[0134] The processor 840 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 840 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 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 830) to cause the device 805 to perform various functions (e.g., various functions or tasks of supporting techniques for reference signal bundling in a green communication network). For example, the device 805 or a component of the device 805 may include a processor 840 and a memory 830 coupled to or coupled to the processor 840, and the processor 840 and the memory 830 are configured to perform the various functions described herein.

[0135] According to examples as disclosed herein, the communication manager 820 may support wireless communications at a UE (e.g., device 805). For example, the communication manager 820 may be configured to or otherwise support components for the following actions: receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition. The communication manager 820 may be configured to or otherwise support components for the following actions: determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition. The communication manager 820 may be configured to or otherwise support components for the following actions: using the determined set of consecutive downlink messages to estimate properties of a channel used for wireless communications between the UE and the network entity.

[0136] By including or configuring a communications manager 820 according to examples as described herein, the device 805 can support techniques for improved communications reliability, reduced latency, more efficient utilization of communications resources, improved coordination between devices, and improved utilization of processing power.

[0137] In some examples, the communication manager 820 can be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 815, one or more antennas 825, or any combination thereof. Although the communication manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 820 may be supported or performed by the processor 840, the memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions executable by the processor 840 to cause the device 805 to perform various aspects of the techniques for reference signal bundling in a green communication network as described herein, or the processor 840 and the memory 830 may be otherwise configured to perform or support such operations.

[0138] Fig. 9 A block diagram 900 of a device 905 supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. The device 905 may be an example of aspects of 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).

[0139] 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 passed 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 fiber) interfaces, wireless interfaces, or any combination thereof.

[0140] The transmitter 915 may provide 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 fiber) 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.

[0141] The communication manager 920, the receiver 910, the transmitter 915, or various combinations thereof, or various components thereof may be examples of means for performing various aspects of the techniques for reference signal bundling in a green communication network as described herein. For example, the communication manager 920, the receiver 910, the transmitter 915, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0142] In some examples, the communication manager 920, the receiver 910, the transmitter 915, 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 configured as or otherwise supporting means 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).

[0143] Additionally or alternatively, in some examples, the communication manager 920, the receiver 910, the transmitter 915, 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 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting means for performing the functionality 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.

[0144] In some examples, the communication manager 920 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 910, the transmitter 915, or both. 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.

[0145] According to examples as disclosed herein, the communication manager 920 may support wireless communications at a network entity (e.g., device 905). For example, the communication manager 920 may be configured to or otherwise support means for: transitioning from a first power mode to a second power mode based on a traffic condition associated with the wireless communications at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition. The communication manager 920 may be configured to or otherwise support means for: outputting a message instructing the network entity to transition from the first power mode to the second power mode.

[0146] By including or configuring a communications manager 920 according to examples as described herein, a device 905 (e.g., a processor controlling or otherwise coupled to a receiver 910, a transmitter 915, a communications manager 920, or a combination thereof) may support techniques for reducing processing, reducing power consumption, and more efficiently utilizing communications resources.

[0147] Fig.10 A block diagram 1000 of a device 1005 supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. The device 1005 may be an example of aspects of the device 905 or the network entity 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0148] Receiver 1010 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 communicated to other components of device 1005. In some examples, receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof.

[0149] The transmitter 1015 may provide means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 1005. For example, the transmitter 1015 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 1015 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1015 may support outputting information by sending signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0150] The device 1005 or its various components may be examples of components for performing various aspects of the techniques for reference signal bundling in a green communication network as described herein. For example, the communication manager 1020 may include a power mode conversion component 1025, a power mode indication component 1030, or any combination thereof. The communication manager 1020 may be an example of various aspects of the communication manager 920 as described herein. In some examples, the communication manager 1020 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 1010, the transmitter 1015, or both. For example, the communication manager 1020 may receive information from the receiver 1010, transmit information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.

[0151] According to examples as disclosed herein, the communication manager 1020 can support wireless communications at a network entity (e.g., device 1005). The power mode transition component 1025 can be configured to or otherwise support means for transitioning from a first power mode to a second power mode based on a traffic condition associated with wireless communications at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition. The power mode indication component 1030 can be configured to or otherwise support means for outputting a message indicating that the network entity is transitioning from the first power mode to the second power mode.

[0152] Fig.11A block diagram 1100 of a communication manager 1120 supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. The communication manager 1120 may be an example of aspects of the communication manager 920, the communication manager 1020, or both as described herein. The communication manager 1120 or its various components may be examples of means for performing various aspects of the techniques for reference signal bundling in a green communication network as described herein. For example, the communication manager 1120 may include a power mode conversion component 1125, a power mode indication component 1130, a phase continuity indication component 1135, a time interval indication component 1140, a parameter indication component 1145, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses), which 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.

[0153] According to examples as disclosed herein, the communication manager 1120 can support wireless communication at a network entity. The power mode transition component 1125 can be configured to or otherwise support means for transitioning from a first power mode to a second power mode based on a traffic condition associated with wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition. The power mode indication component 1130 can be configured to or otherwise support means for outputting a message indicating that the network entity is transitioning from the first power mode to the second power mode.

[0154] In some examples, to support outputting a message indicating that a network entity is transitioning from a first power mode to a second power mode, the phase continuity indication component 1135 may be configured as or otherwise support a component for outputting a control message indicating that a downlink message output from the network entity after the control message fails to satisfy a phase continuity condition.

[0155] In some examples, to support outputting a message indicating a network entity transitioning from a first power mode to a second power mode, the time interval indication component 1140 may be configured as or otherwise support a component for outputting a control message indicating continuous time intervals during which downlink messages are output by the network entity when the network entity is operating in the first power mode.

[0156] In some examples, to support outputting a message indicating a network entity transitioning from a first power mode to a second power mode, the time interval indication component 1140 may be configured as or otherwise support a component for outputting a control message indicating a time interval during which a downlink message is output from the network entity when the network entity is operating in the second power mode.

[0157] In some examples, to support outputting a message indicating a transition of a network entity from a first power mode to a second power mode, parameter indication component 1145 may be configured or otherwise support means for outputting a control message indicating a change in an output parameter of the network entity.

[0158] In some examples, the output parameters of the network entity include frequency resource allocation used by the network entity to output downlink messages, power used by the network entity to output downlink messages, spatial relationships used by the network entity to output downlink messages, the number of antenna ports used by the network entity to output downlink messages, or a predecoder used by the network entity to output downlink messages.

[0159] In some examples, power mode indication component 1130 can be configured to or otherwise support means for outputting a control message indicating a first set of power modes for a network entity and a second set of power modes for the network entity, wherein in the first set of power modes, downlink messages output from the network entity satisfy a phase continuity condition, and in the second set of power modes, downlink messages output from the network entity fail to satisfy the phase continuity condition. In some examples, the first set of power modes includes a first power mode, and the second set of power modes includes a second power mode.

[0160] In some examples, the first group of power modes includes a first power mode and a second power mode, and the phase continuity indication component 1135 can be configured to or otherwise support means for: outputting a second control message indicating that a downlink message output by the network entity after the second control message fails to meet a phase continuity condition. In some examples, the second control message is output by the network entity via layer 1 signaling, layer 2 signaling, or layer 3 signaling.

[0161] Fig.12A diagram of a system 1200 including a device 1205 supporting techniques for reference signal bundling in a green communication network in accordance with various aspects of the present disclosure is shown. The device 1205 may be an example of a device 905, a device 1005, or a network entity 105 as described herein, or include components of these devices. The device 1205 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which communication may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1205 may include components that support output and acquisition of communications, such as a communication manager 1220, a transceiver 1210, an antenna 1215, a memory 1225, a code 1230, and a processor 1235. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1240).

[0162] The transceiver 1210 may support bidirectional communication via a wired link, a wireless link, or both as described herein. In some examples, the transceiver 1210 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1210 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1205 may include one or more antennas 1215, which may be capable of (e.g., concurrently) sending or receiving wireless transmissions. The transceiver 1210 may also include a modem for modulating a signal, for providing a modulated signal for transmission (e.g., via one or more antennas 1215, via a wired transmitter), for receiving a modulated signal (e.g., from one or more antennas 1215, from a wired receiver), and for demodulating a signal. Where applicable, transceiver 1210 or transceiver 1210 and one or more antennas 1215 or wired interfaces may be examples of transmitter 915, transmitter 1015, receiver 910, receiver 1010, or any combination thereof or any components thereof as described herein. In some examples, the transceiver may be operable to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0163] Memory 1225 may include RAM and ROM. Memory 1225 may store computer-readable, computer-executable code 1230 including instructions that, when executed by processor 1235, cause device 1205 to perform various functions described herein. Code 1230 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1230 may not be directly executable by processor 1235, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1225 may include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0164] The processor 1235 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof). In some cases, the processor 1235 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 1235. The processor 1235 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1225) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting techniques for reference signal bundling in a green communication network). For example, the device 1205 or a component of the device 1205 may include a processor 1235 and a memory 1225 coupled to the processor 1235, and the processor 1235 and the memory 1225 are configured to perform the various functions described herein. Processor 1235 can be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that can host functionality (e.g., by executing code 1230) to perform the functions of device 1205.

[0165] In some examples, bus 1240 may support communications of a protocol layer of a protocol stack (e.g., within the protocol layer). In some examples, bus 1240 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of the protocol stack), which may include communications performed within a component of device 1205 or between different components of device 1205 that may be co-located or located in different locations (e.g., where device 1205 may refer to a system where one or more of communication manager 1220, transceiver 1210, memory 1225, code 1230, and processor 1235 may be located in one of the different components or divided between the different components).

[0166] In some examples, communication manager 1220 may manage aspects of communications with core network 130 (e.g., via one or more wired or wireless backhaul links). For example, communication manager 1220 may manage delivery of data communications for client devices such as one or more UEs 115. In some examples, communication manager 1220 may manage communications with other network entities 105 and may include a controller or scheduler for controlling communications with UE 115 in coordination with other network entities 105. In some examples, communication manager 1220 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0167] According to examples as disclosed herein, the communication manager 1220 may support wireless communications at a network entity (e.g., device 1205). For example, the communication manager 1220 may be configured to or otherwise support means for: transitioning from a first power mode to a second power mode based on a traffic condition associated with wireless communications at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition. The communication manager 1220 may be configured to or otherwise support means for: outputting a message instructing the network entity to transition from the first power mode to the second power mode.

[0168] By including or configuring a communications manager 1220 according to examples as described herein, the device 1205 may support techniques for improving communications reliability, reducing latency, improving user experience associated with reduced processing, more efficiently utilizing communications resources, improving coordination between devices, and improving utilization of processing power.

[0169] In some examples, the communication manager 1220 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1210, one or more antennas 1215 (e.g., where applicable), or any combination thereof. Although the communication manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1220 may be supported or performed by the processor 1235, the memory 1225, the code 1230, the transceiver 1210, or any combination thereof. For example, the code 1230 may include instructions executable by the processor 1235 to cause the device 1205 to perform various aspects of the techniques for reference signal bundling in a green communication network as described herein, or the processor 1235 and the memory 1225 may be otherwise configured to perform or support such operations.

[0170] Fig.13A flow chart illustrating a method 1300 for supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. 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 8 The UE 115 described herein may be used to perform. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions of the present disclosure. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions of the present disclosure.

[0171] At 1305, the method may include: receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition. 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 7 The described power mode component 725 is executed.

[0172] At 1310, the method may include: determining a set of consecutive downlink messages sent from a network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies a phase continuity condition. 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 to Figure 7 The described downlink message component 730 is performed.

[0173] At 1315, the method may include: using the determined set of consecutive downlink messages to estimate properties of a channel for wireless communication between the UE and the network entity. The operations of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed as described in reference to Figure 7 The channel estimation component 735 described above is performed.

[0174] Fig.14 A flow chart illustrating a method 1400 for supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. 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 8 The UE 115 described herein may be used to perform. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions of the present disclosure. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions of the present disclosure.

[0175] At 1405, the method may include: receiving a control message from a network entity, the control message indicating that a downlink message sent from the network entity after the control message fails to meet a phase continuity condition. 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 as described in reference to Figure 7 The described power mode component 725 is executed.

[0176] At 1410, the method may include determining a set of consecutive downlink messages sent from the network entity based on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies a phase continuity condition, and wherein the determined set of consecutive downlink messages does not include a downlink message sent from the network entity after the control message. The operations of 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed as described in reference to Figure 7 The described downlink message component 730 is performed.

[0177] At 1420, the method may include: using the determined set of consecutive downlink messages to estimate properties of a channel for wireless communication between the UE and the network entity. 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 as described in reference to Figure 7 The channel estimation component 735 described above is performed.

[0178] Fig.15 A flow chart illustrating a method 1500 for supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. 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 8 The UE 115 described above may be used to perform. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions of the present disclosure. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions of the present disclosure.

[0179] At 1505, the method may include: receiving a control message from a network entity, the control message indicating a change in a transmission parameter of the network entity. 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 as described in reference to Figure 7 The described send parameter component 745 is executed.

[0180] At 1510, the method may include determining that the network entity is transitioning from a first power mode to a second power mode based on the indicated change in the transmission parameter of the network entity. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Figure 7 The described send parameter component 745 is executed.

[0181] At 1515, the method may include: determining a set of consecutive downlink messages sent from the network entity based on the received control message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies a phase continuity condition. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Figure 7 The described downlink message component 730 is performed.

[0182] At 1520, the method may include: using the determined set of consecutive downlink messages to estimate properties of a channel for wireless communication between the UE and the network entity. The operations of 1520 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed as described in reference to Figure 7 The channel estimation component 735 described above is performed.

[0183] Fig.16 A flow chart illustrating a method 1600 of supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. 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 4 as well as Figures 9 to 12 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the functions of the present disclosure. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the functions of the present disclosure.

[0184] At 1605, the method may include: transitioning from a first power mode to a second power mode based on a traffic condition associated with wireless communication at a network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition. 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 to Fig.11 The described power mode transition component 1125 is performed.

[0185] At 1610, the method may include: outputting a message instructing the network entity to transition from a first power mode to a second power 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 as described in reference to Fig.11 The described power modes instruct component 1130 to perform.

[0186] Fig.17 A flow chart illustrating a method 1700 of supporting techniques for reference signal bundling in a green communication network according to various aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 4 as well as Figures 9 to 12 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the functions of the present disclosure. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the functions of the present disclosure.

[0187] At 1705, the method may include: transitioning from a first power mode to a second power mode based on a traffic condition associated with wireless communication at a network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition. The operations of 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Fig.11 The described power mode transition component 1125 is performed.

[0188] At 1710, the method may include: outputting a control message indicating that a downlink message output from a network entity after the control message fails to satisfy the phase continuity condition. The operations of 1710 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Fig.11 The described phase continuity indication component 1135 is performed.

[0189] The following provides an overview of various aspects of the present disclosure:

[0190] Aspect 1: A method for performing wireless communications at a UE, the method comprising: receiving a message from a network entity indicating that the network entity is transitioning from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; determining a set of consecutive downlink messages sent from the network entity based at least in part on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a corresponding time interval and satisfies the phase continuity condition; and using the determined set of consecutive downlink messages to estimate properties of a channel used for wireless communications between the UE and the network entity.

[0191] Aspect 2: A method according to Aspect 1, wherein receiving the message indicating that the network entity switches from the first power mode to the second power mode includes: receiving a control message from the network entity, the control message indicating that a downlink message sent from the network entity after the control message fails to meet the phase continuity condition, wherein the determined set of consecutive downlink messages does not include the downlink message sent from the network entity after the control message.

[0192] Aspect 3: According to the method described in Aspect 2, the method further includes: determining a second group of continuous downlink messages sent from the network entity based at least in part on the received control message, wherein the determined second group of continuous downlink messages includes the downlink message sent from the network entity after the control message, and wherein each downlink message in the determined second group of continuous downlink messages occurs during a corresponding time interval and satisfies a second phase continuity condition; and using the determined second group of continuous downlink messages to estimate the properties of the channel used for the wireless communication between the UE and the network entity.

[0193] Aspect 4: A method according to Aspect 1, wherein receiving the message indicating that the network entity switches from the first power mode to the second power mode includes: receiving a control message from the network entity, the control message indicating a continuous time interval during which downlink messages are sent by the network entity when the network entity operates in the first power mode, and wherein the determined set of continuous downlink messages includes the downlink messages sent from the network entity during the indicated continuous time interval.

[0194] Aspect 5: A method according to Aspect 1, wherein receiving the message indicating that the network entity switches from the first power mode to the second power mode includes: receiving a control message from the network entity, the control message indicating a time interval during which a downlink message is sent from the network entity when the network entity operates in the second power mode, and wherein the determined set of consecutive downlink messages does not include the downlink message sent from the network entity during the indicated time interval.

[0195] Aspect 6: A method according to Aspect 1, wherein receiving the message indicating that the network entity switches from the first power mode to the second power mode includes: receiving a control message from the network entity, the control message indicating a change in a transmission parameter of the network entity; and determining that the network entity switches from the first power mode to the second power mode based at least in part on the indicated change in the transmission parameter of the network entity.

[0196] Aspect 7: A method according to Aspect 6, wherein the transmission parameters of the network entity include frequency resource allocation used by the network entity to send downlink messages, transmission power used by the network entity to send downlink messages, spatial transmission relationships used by the network entity to send downlink messages, the number of antenna ports used by the network entity to send downlink messages, or a predecoder used by the network entity to send downlink messages.

[0197] Aspect 8: According to the method described in any one of Aspects 1 to 7, the method further includes: receiving a control message from the network entity, the control message indicating a first group of power modes of the network entity and a second group of power modes of the network entity, in which the downlink message sent from the network entity satisfies the phase continuity condition, and in which the downlink message sent from the network entity fails to satisfy the phase continuity condition.

[0198] Aspect 9: The method according to aspect 8, wherein the first group of power modes includes the first power mode, and the second group of power modes includes the second power mode.

[0199] Aspect 10: A method according to Aspect 8, wherein the first group of power modes includes the first power mode and the second power mode, and the method further includes: receiving a second control message, the second control message indicating that a downlink message sent by the network entity after the second control message fails to meet the phase continuity condition, wherein the determined set of continuous downlink messages does not include the downlink message sent by the network entity after the second control message.

[0200] Aspect 11: The method according to aspect 10, wherein the received second control message is sent by the network entity via L1 signaling, L2 signaling or L3 signaling.

[0201] Aspect 12: A method according to any one of Aspects 1 to 11, wherein the determined set of consecutive downlink messages includes multiple reference signals, and wherein estimating the property of the channel includes: performing one or more measurements on the multiple reference signals.

[0202] Aspect 13: The method according to aspect 12, wherein the plurality of reference signals comprises a PRS or a DMRS.

[0203] Aspect 14: The method according to any one of Aspects 1 to 13, wherein the message comprises a DCI message.

[0204] Aspect 15: A method for performing wireless communications at a network entity, the method comprising: transitioning from a first power mode to a second power mode based at least in part on a traffic condition associated with the wireless communications at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; and outputting a message instructing the network entity to transition from the first power mode to the second power mode.

[0205] Aspect 16: A method according to Aspect 15, wherein outputting the message indicating that the network entity switches from the first power mode to the second power mode includes: outputting a control message indicating that a downlink message output from the network entity after the control message fails to satisfy the phase continuity condition.

[0206] Aspect 17: A method according to Aspect 15, wherein the output of the message indicating that the network entity switches from the first power mode to the second power mode includes: outputting a control message indicating a continuous time interval during which a downlink message is output by the network entity when the network entity operates in the first power mode.

[0207] Aspect 18: A method according to Aspect 15, wherein outputting the message indicating that the network entity switches from the first power mode to the second power mode includes: outputting a control message indicating a time interval during which a downlink message is output from the network entity when the network entity operates in the second power mode.

[0208] Aspect 19: The method according to aspect 15, wherein outputting the message indicating that the network entity switches from the first power mode to the second power mode comprises: outputting a control message indicating a change in an output parameter of the network entity.

[0209] Aspect 20: A method according to Aspect 19, wherein the output parameters of the network entity include frequency resource allocation used by the network entity to output downlink messages, power used by the network entity to output downlink messages, spatial relationships used by the network entity to output downlink messages, the number of antenna ports used by the network entity to output downlink messages, or a predecoder used by the network entity to output downlink messages.

[0210] Aspect 21: According to the method described in any one of Aspects 15 to 20, the method further includes: outputting a control message indicating a first group of power modes of the network entity and a second group of power modes of the network entity, wherein in the first group of power modes, the downlink message output from the network entity satisfies the phase continuity condition, and in the second group of power modes, the downlink message output from the network entity fails to satisfy the phase continuity condition.

[0211] Aspect 22: The method according to aspect 21, wherein the first group of power modes includes the first power mode, and the second group of power modes includes the second power mode.

[0212] Aspect 23: A method according to Aspect 21, wherein the first group of power modes includes the first power mode and the second power mode, and the method further includes: outputting a second control message, wherein the second control message indicates that the downlink message output by the network entity after the second control message fails to meet the phase continuity condition.

[0213] Aspect 24: The method according to aspect 23, wherein the second control message is output by the network entity via L1 signaling, L2 signaling or L3 signaling.

[0214] Aspect 25: 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 14.

[0215] Aspect 26: An apparatus for wireless communication at a UE, the apparatus comprising: at least one component for performing the method according to any one of aspects 1 to 14.

[0216] Aspect 27: 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 the method according to any one of aspects 1 to 14.

[0217] Aspect 28: 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 15 to 24.

[0218] Aspect 29: An apparatus for wireless communication at a network entity, the apparatus comprising: at least one means for performing the method according to any one of aspects 15 to 24.

[0219] Aspect 30: 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 15 to 24.

[0220] 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 that other implementations are possible. Furthermore, aspects from two or more methods may be combined in a method.

[0221] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems 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 described techniques 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.

[0222] The information and signals described herein may be represented using any of a variety of different techniques 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.

[0223] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with 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, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such example).

[0224] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium, or sent via a computer-readable medium. Other examples and specific implementations are within the scope of this 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.

[0225] Computer-readable medium includes both non-transient computer storage medium and communication medium, including any medium that facilitates computer program to be transmitted from one place to another.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.In an example and not limiting manner, non-transient computer-readable medium 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 device, or can be used to carry or store desired program code components and can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure Any other non-transient medium.Moreover, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, includes CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0226] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items with 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). In addition, 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."

[0227] 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, etc. Additionally, "determining" may include receiving (such as receiving information), accessing (such as accessing data in a memory), etc. Additionally, "determining" may include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.

[0228] 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 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 reference label, or other subsequent reference labels.

[0229] The descriptions set forth herein in conjunction with the accompanying drawings describe examples and do not represent all examples that can be implemented or fall 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 detailed description includes details to provide an understanding of the described techniques. However, these techniques may be practiced without these details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0230] 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. A method for wireless communication at a user equipment (UE), the method include: receiving a message from a network entity instructing the network entity to transition from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; determining a set of consecutive downlink messages sent from the network entity based at least in part on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a respective time interval and satisfies the phase continuity condition; as well as A property of a channel used for wireless communication between the UE and the network entity is estimated using the determined set of consecutive downlink messages.

2. The method of claim 1 , wherein receiving the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is received from the network entity, the control message indicating that a downlink message sent from the network entity after the control message fails to meet the phase continuity condition, wherein a determined set of consecutive downlink messages does not include the downlink message sent from the network entity after the control message.

3. The method according to claim 2, further comprising: include: determining a second set of consecutive downlink messages sent from the network entity based at least in part on the received control message, wherein the determined second set of consecutive downlink messages includes the downlink message sent from the network entity after the control message, and wherein each downlink message in the determined second set of consecutive downlink messages occurs during a respective time interval and satisfies a second phase continuity condition; as well as The property of the channel used for the wireless communication between the UE and the network entity is estimated using the determined second set of consecutive downlink messages.

4. The method of claim 1 , wherein receiving the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is received from the network entity, the control message indicating a continuous time interval during which downlink messages are sent by the network entity when the network entity operates in the first power mode, and wherein the determined set of continuous downlink messages includes the downlink messages sent from the network entity during the indicated continuous time interval.

5. The method of claim 1 , wherein receiving the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is received from the network entity, the control message indicating a time interval during which a downlink message is sent from the network entity when the network entity operates in the second power mode, and wherein the determined set of consecutive downlink messages does not include the downlink message sent from the network entity during the indicated time interval.

6. The method of claim 1, wherein receiving the message instructing the network entity to transition from the first power mode to the second power mode include: receiving a control message from the network entity, the control message indicating a change in a transmission parameter of the network entity; as well as Determining that the network entity transition from the first power mode to the second power mode is based at least in part on the indicated change in the transmit parameter of the network entity.

7. The method of claim 6, wherein the transmission parameters of the network entity include frequency resource allocation used by the network entity for sending downlink messages, transmission power used by the network entity for sending downlink messages, spatial transmission relationships used by the network entity for sending downlink messages, the number of antenna ports used by the network entity for sending downlink messages, or a pre-decoder used by the network entity for sending downlink messages.

8. The method according to claim 1, further comprising: include: A control message is received from the network entity, the control message indicating a first set of power modes for the network entity and a second set of power modes for the network entity, wherein in the first set of power modes, downlink messages sent from the network entity satisfy the phase continuity condition, and in the second set of power modes, downlink messages sent from the network entity fail to satisfy the phase continuity condition. 9 . The method of claim 8 , wherein the first set of power modes includes the first power mode and the second set of power modes includes the second power mode.

10. The method of claim 8, wherein the first set of power modes includes the first power mode and the second power mode, the method further comprising: include: A second control message is received, wherein the second control message indicates that a downlink message sent by the network entity after the second control message fails to meet the phase continuity condition, wherein the determined set of consecutive downlink messages does not include the downlink message sent by the network entity after the second control message.

11. The method according to claim 10, wherein the received second control message is sent by the network entity via layer 1 signaling, layer 2 signaling or layer 3 signaling.

12. The method of claim 1, wherein the determined set of consecutive downlink messages comprises a plurality of reference signals, and wherein the property of the channel is estimated include: One or more measurements are performed on the plurality of reference signals. The method of claim 12 , wherein the plurality of reference signals comprise positioning reference signals or demodulation reference signals.

14. The method of claim 1, wherein the message comprises a downlink control information message.

15. A method for wireless communication at a network entity, the method include: transitioning from a first power mode to a second power mode based at least in part on a traffic condition associated with the wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; as well as A message is outputted instructing the network entity to transition from the first power mode to the second power mode.

16. The method of claim 15, wherein outputting the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is output, the control message indicating that a downlink message output from the network entity after the control message fails to satisfy the phase continuity condition.

17. The method of claim 15, wherein outputting the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is outputted, the control message indicating continuous time intervals during which downlink messages are outputted by the network entity when the network entity operates in the first power mode.

18. The method of claim 15, wherein outputting the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is outputted, the control message indicating a time interval during which a downlink message is outputted from the network entity when the network entity operates in the second power mode.

19. The method of claim 15, wherein outputting the message instructing the network entity to transition from the first power mode to the second power mode include: A control message is output, the control message indicating a change in an output parameter of the network entity.

20. The method of claim 19, wherein the output parameters of the network entity include frequency resource allocation used by the network entity for outputting downlink messages, power used by the network entity for outputting downlink messages, spatial relationships used by the network entity for outputting downlink messages, the number of antenna ports used by the network entity for outputting downlink messages, or a pre-decoder used by the network entity for outputting downlink messages.

21. The method according to claim 15, further comprising: include: Output a control message, the control message indicating a first set of power modes of the network entity and a second set of power modes of the network entity. In the first set of power modes, downlink messages output from the network entity meet the phase continuity condition, and in the second set of power modes, downlink messages output from the network entity fail to meet the phase continuity condition.

22. The method of claim 21, wherein the first set of power modes includes the first power mode and the second set of power modes includes the second power mode.

23. The method of claim 21, wherein the first set of power modes includes the first power mode and the second power mode, the method further comprising: include: A second control message is output, the second control message indicating that a downlink message output by the network entity after the second control message fails to satisfy the phase continuity condition.

24. The method of claim 23, wherein the second control message is output by the network entity via layer 1 signaling, layer 2 signaling, or layer 3 signaling.

25. An apparatus for wireless communication at a user equipment (UE), the apparatus include: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a message from a network entity instructing the network entity to transition from a first power mode to a second power mode, wherein the first power mode is associated with a phase continuity condition; determining a set of consecutive downlink messages sent from the network entity based at least in part on the received message, wherein each downlink message in the determined set of consecutive downlink messages occurs during a respective time interval and satisfies the phase continuity condition; as well as A property of a channel used for wireless communication between the UE and the network entity is estimated using the determined set of consecutive downlink messages.

26. The apparatus of claim 25, wherein the instructions for receiving the message instructing the network entity to transition from the first power mode to the second power mode are executable by the processor to cause the apparatus to: A control message is received from the network entity, the control message indicating that a downlink message sent from the network entity after the control message fails to meet the phase continuity condition, wherein a determined set of consecutive downlink messages does not include the downlink message sent from the network entity after the control message.

27. The apparatus of claim 25, wherein the instructions for receiving the message instructing the network entity to transition from the first power mode to the second power mode are executable by the processor to cause the apparatus to: receiving a control message from the network entity, the control message indicating a change in a transmission parameter of the network entity; and Determining that the network entity transition from the first power mode to the second power mode is based at least in part on the indicated change in the transmit parameter of the network entity.

28. An apparatus for wireless communication at a network entity, the apparatus include: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: transitioning from a first power mode to a second power mode based at least in part on a traffic condition associated with the wireless communication at the network entity satisfying a threshold, wherein the first power mode is associated with a phase continuity condition; as well as A message is outputted instructing the network entity to transition from the first power mode to the second power mode.

29. The apparatus of claim 28, wherein the instructions for outputting the message instructing the network entity to transition from the first power mode to the second power mode are executable by the processor to cause the apparatus to: A control message is output, the control message indicating that a downlink message output from the network entity after the control message fails to satisfy the phase continuity condition.

30. The apparatus of claim 28, wherein the instructions for outputting the message instructing the network entity to transition from the first power mode to the second power mode are executable by the processor to cause the apparatus to: A control message is outputted, the control message indicating a time interval during which a downlink message is outputted from the network entity when the network entity operates in the second power mode.

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