Receiver Tuning for Wireless Communications

Abstract

Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may communicate with a base station using multiple receivers and receive an indication from the base station to activate a second bandwidth portion of a set of bandwidth portions configured for the UE. In response to the indication, the UE may switch from operating in a first bandwidth portion to operating in a second bandwidth portion and adjust a quantity of active receivers in the UE based on switching from operating in the first bandwidth portion to operating in the second bandwidth portion. Additionally or alternatively, the UE may adjust a quantity of active receivers in the UE based on monitoring a downlink grant from the base station.

Description

Claiming priority

[0001] cross reference

[0001] This patent application claims the benefit of U.S. patent application Ser. No. 17 / 334,452, by Jian et al., entitled "RECEIVER ADJUSTMENT FOR WIRELESS COMMUNICATION," filed May 28, 2021, which is assigned to the assignee of this application. [Technical field]

[0002] The following relates to wireless communications, including receiver conditioning for wireless communications. [Background technology]

[0003]

[0003] Wireless communication systems have been widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasts. These systems may be capable of supporting 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), LTE-Advanced (LTE-A), or LTE-A Pro systems, and fifth generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may in some cases be known as user equipment (UE).

[0004]

[0004] Some wireless communication systems may support multiple-input multiple-output (MIMO) communication. To support MIMO communication, a wireless device (e.g., a UE) may include multiple receivers. In some examples, a wireless device may maintain a large number of active receivers (e.g., four active receivers) to increase data throughput and reliability. However, in some situations, maintaining a large number of active receivers may result in excessive power consumption in the wireless device. Summary of the Invention

[0005]

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support receiver adjustment for wireless communications. In general, the described techniques enable a user equipment (UE) to adjust the number of active receivers based on a bandwidth portion (BWP) switch. The UE receives an instruction from a base station to activate (e.g., switch to) one BWP of a set of BWPs configured for the UE, and in response, the UE can increase, decrease, or maintain the number of active receivers at the UE based on characteristics (e.g., bandwidth) of the indicated BWP.

[0006] A method for wireless communication in a user equipment (UE) is described. The method may include receiving, from a base station, an activation message for a second BWP of a set of BWPs configured for the UE, switching from operating in a first BWP to operating in the second BWP based on the activation message for the second BWP, and adjusting a quantity of active receivers in the UE based on the switching from operating in the first BWP to operating in the second BWP.

[0007]

[0007] An apparatus for wireless communication in 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, from a base station, an activation message for a second BWP of a set of multiple BWPs configured for the UE, switch from operating in a first BWP to operating in the second BWP based on the activation message for the second BWP, and adjust a quantity of active receivers in the UE based on the switching from operating in the first BWP to operating in the second BWP.

[0008] Another apparatus for wireless communication in a UE is described that may include means for receiving, from a base station, an activation message for a second BWP of a set of multiple BWPs configured for the UE, means for switching from operating in a first BWP to operating in the second BWP based on the activation message for the second BWP, and means for adjusting a quantity of active receivers in the UE based on the switching from operating in the first BWP to operating in the second BWP.

[0009] A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executable by a processor to receive, from a base station, an activation message for a second BWP of a set of multiple BWPs configured for the UE, switch from operating in a first BWP to operating in a second BWP based on the activation message for the second BWP, and adjust a quantity of active receivers in the UE based on the switch from operating in the first BWP to operating in the second BWP.

[0010]

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for monitoring one or more downlink grants from the base station while operating within the second BWP, and adjusting the quantity of active receivers in the UE may be based on monitoring the one or more downlink grants from the base station.

[0011]

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for activating a timer based on switching from operating within a first BWP to operating within a second BWP, and monitoring for one or more downlink grants from the base station may be based on the timer.

[0012]

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification, the bandwidth associated with the second BWP is greater than a threshold, and adjusting the quantity of active receivers in the UE may be based on the bandwidth associated with the second BWP being greater than a threshold.

[0013]

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for failing to detect one or more downlink grants from the base station while operating within the second BWP, and adjusting the quantity of active receivers in the UE may include an operation, feature, means, or instruction for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on the failure to detect one or more downlink grants from the base station.

[0014]

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for sending signaling to a base station based on a second quantity of active receivers before reducing the quantity of active receivers in the UE.

[0015]

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting signaling based on the second quantity of active receivers may include operations, features, means, or instructions for transmitting channel condition feedback (CSF), a sounding reference signal (SRS), or both, to the base station in accordance with a format associated with the second quantity of active receivers.

[0016]

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for activating a timer based on sending signaling, and reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers is performed based on expiration of the timer.

[0017]

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for activating a second timer based on whether one or more second downlink grants can be detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is performed based on expiration of the timer and the second timer.

[0018]

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for detecting one or more second downlink grants from the base station while operating within the second BWP and after reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers, and increasing the quantity of active receivers in the UE from the second quantity of active receivers to a third quantity of active receivers based on detecting one or more second downlink grants from the base station.

[0019]

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, adjusting the quantity of active receivers in the UE may include an operation, feature, means, or instruction for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on the bandwidth associated with the second BWP falling below a threshold.

[0020]

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for sending signaling to a base station based on a second quantity of active receivers before reducing the quantity of active receivers in the UE.

[0021]

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting signaling based on the second quantity of active receivers may include operations, features, means, or instructions for transmitting a CSF, an SRS, or both to the base station in accordance with a format associated with the second quantity of active receivers.

[0022]

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for activating a timer based on sending signaling, and reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers is performed based on expiration of the timer.

[0023]

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for activating a second timer based on whether one or more second downlink grants may be detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is performed based on expiration of the timer and the second timer.

[0024]

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, adjusting the quantity of active receivers in the UE may include operations, features, means, or instructions for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers, the method further including detecting one or more downlink grants from a base station scheduling communications associated with the first quantity of active receivers, increasing the quantity of active receivers from the second quantity of active receivers to the first quantity of active receivers during a period of time based on detecting the one or more downlink grants, and reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers after the period of time.

[0025] A method for wireless communication in a UE is described, which may include receiving, from a base station, an activation message for a BWP of a set of BWPs configured for the UE, monitoring one or more downlink grants while operating in the BWP, the one or more downlink grants being for receiving one or more downlink signals in the active BWP, and adjusting a quantity of active receivers in the UE based on whether the one or more downlink grants are detected.

[0026]

[0026] An apparatus for wireless communication in 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 an activation message for a BWP from a base station among a set of BWPs configured for the UE, monitor one or more downlink grants while operating in the BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP, and adjust a quantity of active receivers in the UE based on whether the one or more downlink grants are detected.

[0027] Another apparatus for wireless communication in a UE is described, which may include means for receiving an activation message for a BWP of a set of multiple BWPs configured for the UE from a base station, means for monitoring one or more downlink grants while operating in the BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP, and means for adjusting a quantity of active receivers in the UE based on whether the one or more downlink grants are detected.

[0028] A non-transitory computer-readable medium storing code for wireless communication in a UE is described. The code may include instructions executable by a processor to receive, from a base station, an activation message for a BWP of a set of BWPs configured for the UE, monitor one or more downlink grants while operating in the BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP, and adjust a quantity of active receivers in the UE based on whether the one or more downlink grants are detected.

[0029]

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for failing to detect one or more downlink grants from the base station while operating within the BWP, and adjusting the quantity of active receivers in the UE may include an operation, feature, means, or instruction for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on the failure to detect one or more downlink grants from the base station.

[0030]

[0030] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for sending signaling to a base station based on a second quantity of active receivers before reducing the quantity of active receivers in the UE.

[0031]

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting signaling based on the second quantity of active receivers may include operations, features, means, or instructions for transmitting a CSF, an SRS, or both, to the base station in accordance with a format associated with the second quantity of active receivers.

[0032]

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for activating a timer based on sending signaling, and reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers is performed based on expiration of the timer.

[0033]

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include an operation, feature, means, or instruction for activating a second timer based on whether one or more second downlink grants may be detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is performed based on expiration of the timer and the second timer.

[0034]

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for detecting one or more second downlink grants from the base station while operating within the BWP and after reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers, and increasing the quantity of active receivers in the UE from the second quantity of active receivers to a third quantity of active receivers based on detecting one or more second downlink grants from the base station.

[0035]

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, adjusting a quantity of active receivers in the UE may include operations, features, means, or instructions for reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers, the method further including detecting one or more downlink grants from a base station scheduling communications associated with the first quantity of active receivers, increasing the quantity of active receivers from the second quantity of active receivers to the first quantity of active receivers during a period of time based on detecting the one or more downlink grants, and reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers after the period of time.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each BWP in a set of multiple BWPs may have the same bandwidth. [Brief description of the drawings]

[0037] [Figure 1]

[0037] FIG. 1 illustrates an example of a wireless communication system that supports receiver tuning for wireless communications in accordance with an aspect of the present disclosure. [Diagram 2] FIG. 1 illustrates another example of a wireless communication system supporting receiver tuning for wireless communications in accordance with aspects of the present disclosure. [Diagram 3]

[0038] FIG. 1 illustrates an example of a bandwidth portion (BWP) switching scheme to support receiver adjustment for wireless communications, according to an aspect of the present disclosure. [Figure 4] FIG. 1 illustrates another example of a bandwidth portion (BWP) switching scheme to support receiver adjustment for wireless communications, according to an aspect of the present disclosure. [Diagram 5]

[0039] FIG. 1 illustrates an example of a process flow for supporting receiver tuning for wireless communications, according to aspects of the present disclosure. [Figure 6]

[0040] 1 is a block diagram of a device that supports receiver tuning for wireless communications according to an aspect of the present disclosure. [Figure 7] 1 is a block diagram of a device that supports receiver tuning for wireless communications according to an aspect of the present disclosure. [Figure 8]

[0041] 1 is a block diagram of a communications manager supporting receiver coordination for wireless communications according to an aspect of the present disclosure. [Figure 9]

[0042] FIG. 1 illustrates an illustration of a system including a device that supports receiver tuning for wireless communications, according to an aspect of the present disclosure. [Figure 10]

[0043] 1 is a flowchart illustrating a method for supporting receiver adjustments for wireless communications according to an aspect of the present disclosure. [Figure 11] 1 is a flowchart illustrating a method for supporting receiver adjustments for wireless communications according to an aspect of the present disclosure. [Figure 12] 1 is a flowchart illustrating a method for supporting receiver adjustments for wireless communications according to an aspect of the present disclosure. [Figure 13] 1 is a flowchart illustrating a method for supporting receiver adjustments for wireless communications according to an aspect of the present disclosure. [Figure 14] 1 is a flowchart illustrating a method for supporting receiver adjustments for wireless communications according to an aspect of the present disclosure. [Figure 15] 1 is a flowchart illustrating a method for supporting receiver adjustments for wireless communications according to an aspect of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038]

[0044] In some examples, a wireless communication system may support multiple-input multiple-output (MIMO) communication. In one example of MIMO communication, a base station may split a signal into multiple data streams and transmit the multiple data streams to a user equipment (UE). To simultaneously receive multiple data streams, the UE may use multiple active receivers (e.g., a different active receiver for each data stream). Having a large number of active receivers (e.g., four active receivers as opposed to two active receivers) may increase throughput (e.g., increase the number of data streams that a UE can receive at one time) and may be advantageous during times of high data traffic. However, in some examples, a UE may experience periods of low data traffic, and in such cases, maintaining a large number of receivers in an active state may be inefficient in terms of power consumption.

[0039]

[0045] In some examples, a UE may be configured with multiple bandwidth portions (BWPs). At a given time, for example, one BWP of the multiple BWPs may be active. The UE may receive instructions from the base station to activate and switch to another BWP. In some examples, a UE may be configured with two or more BWPs of different sizes. BWP switching may be correlated with changes in data traffic patterns, and thus, as described herein, the UE may adapt the number of active receivers in the UE based on one or more characteristics of the newly activated BWP.

[0040]

[0046] In one example, the UE may receive an activation message for a small BWP (e.g., a BWP having a bandwidth below a threshold or a BWP having a bandwidth smaller than at least one other configured BWP) from a base station. Being instructed to switch to or otherwise use a small BWP may indicate that a low data traffic pattern is coming, so the UE may reduce the number of active receivers. In another example, the UE may receive an activation message for a large BWP (e.g., a BWP having a bandwidth above a threshold or a BWP having a bandwidth larger than at least one other configured BWP) from a base station. Being instructed to switch to or otherwise use a large BWP may indicate that a high data traffic pattern is coming, so the UE may increase the number of active receivers. In some examples, if the UE does not receive any downlink (DL) grants for a duration while operating in the large BWP, the UE may reduce the number of active receivers. When reducing the number of active receivers, the UE may transmit one or more messages or other signals (e.g., a feedback message) to the base station reflecting the reduction in active receivers (e.g., the UE may transmit a channel condition feedback (CSF) report or one or more sounding reference signals (SRS) that use or otherwise reflect the reduced amount of active receivers), and the UE may then wait a duration before reducing the number of active receivers.

[0041]

[0047] Additionally or alternatively, the base station may configure the UE with two or more BWPs of the same size (e.g., the same bandwidth). In such a case, the UE may operate according to the techniques described for operating in a large BWP. For example, when the UE switches to a BWP of the same size, if the UE does not receive any DL grants from the base station for a duration, the UE may reduce the number of active receivers in the UE. Further, as another example, the UE may send signaling to the base station reflecting the reduction in active receivers and wait for the duration before reducing the number of active receivers.

[0042]

[0048] Aspects of the present disclosure are first described in the context of a wireless communication system. Further aspects are described in the context of a BWP switching scheme and process flow. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow charts relating to receiver tuning for wireless communication.

[0043]

[0049] 1 illustrates an example of a wireless communication system 100 supporting receiver adjustment for wireless communication according to an aspect of the disclosure. The wireless communication system 100 may include one or more base stations 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 LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0044]

[0050] The base stations 105 may be distributed throughout a geographic area to form the wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0045]

[0051] The UEs 115 may be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed or mobile, or both, at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in FIG. 1.

[0046]

[0052] The base stations 105 may communicate with the core network 130, or with each other, or both. For example, the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface). The base stations 105 may communicate with each other over the backhaul links 120 (e.g., via an X2, Xn, or other interface), either directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0047]

[0053] One or more of the base stations 105 described herein may include or be referred to as a base transceiver station, radio base station, access point, radio transceiver, NodeB, eNodeB (eNB), next generation NodeB or giga NodeB (any of which may be referred to as gNB), Home NodeB, Home eNodeB, or other suitable terminology by those skilled in the art.

[0048]

[0054] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where a "device" may be referred to as a unit, a station, a terminal, or a client, among other examples. The UE 115 may include or be referred to as a personal electronic device, such as a mobile phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, the UE 115 may include or be referred to as a Wireless Local Loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a Machine Type Communication (MTC) device, among other examples, which may be implemented within various objects, such as an appliance, or a vehicle, a meter, among other examples.

[0049]

[0055] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may at times act as relays, as well as base stations 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.

[0050]

[0056] The UE 115 and the base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure to support the communication link 125. For example, a carrier used for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., 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 that coordinates operation on the carrier, user data, or other signaling. The wireless communication system 100 can support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0051]

[0057] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition or control signaling that coordinates operation for other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be arranged according to a channel raster for discovery by the UE 115. A carrier may operate in a standalone mode where initial acquisition and connection may be made by the UE 115 over the carrier, or a carrier may operate in a non-standalone mode where a connection is established using a different carrier (e.g., of the same or different radio access technology).

[0052]

[0058] The communication links 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105 or downlink transmissions from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry downlink and uplink communications (e.g., in TDD mode).

[0053]

[0059] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) for a carrier of a particular radio access technology. The devices (e.g., the base station 105, the UE 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communication on a particular carrier bandwidth or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication over carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth.

[0054]

[0060] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may include one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number 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). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further increase the data rate or data integrity for communication with the UE 115.

[0055]

[0061] One or more numerologies for a carrier may be supported, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for the UE 115 may be limited to one or more active BWPs.

[0056]

[0062] The time interval for the base station 105 or the UE 115 may be, for example, T s =1 / (Δf max N f ) seconds, where Δf maxLet denote the maximum supported subcarrier spacing, and N f may represent the maximum discrete Fourier transform (DFT) size supported. The communication resource time intervals 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., in the range of 0 to 1023).

[0057]

[0063] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into several slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include several symbol periods (e.g., depending on the length of a cyclic prefix added to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f A symbol period may contain multiple sampling periods (number of symbol periods). The duration of a symbol period may depend on the subcarrier spacing or frequency operating band.

[0058]

[0064] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications 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 within a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., within a burst of shortened TTIs (sTTIs)).

[0059]

[0065] The physical channels may be multiplexed on the carriers according to various techniques. The physical control channels and the physical data channels may be multiplexed on the downlink carriers, for example, using one or more of a time division multiplexing (TDM), a frequency division multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for the physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., a CORESET) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation levels for the control channel candidates may refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with the coding information for a control information format having a given payload size. The search space sets may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a particular UE 115.

[0060]

[0066] In some examples, the base stations 105 are mobile and thus may provide communication coverage to moving geographic coverage areas 110. In some examples, the different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include a heterogeneous network in which different types of base stations 105 provide coverage to various geographic coverage areas 110, e.g., using the same or different radio access technologies.

[0061]

[0067] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission-critical communications. The UE 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission-critical functions). Ultra-reliable communications may include private or group communications and may be supported by one or more mission-critical services, such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions may include service prioritization, and the mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency may be used interchangeably herein.

[0062]

[0068] In some examples, the UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or may not otherwise be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0063]

[0069] 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 5G core (5GC) that may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) that routes packets or interconnection to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130. User IP packets may be forwarded through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0064]

[0070] Some of the network devices, such as the base station 105, may include subcomponents, such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, a smart radio head, or a transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or integrated into a single network device (e.g., the base station 105).

[0065]

[0071] The wireless communication system 100 may operate using one or more frequency bands ranging from, for example, 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the 300 MHz to 3 GHz region is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter in length. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves can penetrate structures well enough for a macrocell to serve UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0066]

[0072] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) 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 radio frequency spectrum band, devices such as the base station 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation in an unlicensed band may be based on a carrier aggregation configuration with a component carrier operating in a licensed band (e.g., LAA). Operation in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0067]

[0073] The base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, MIMO communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located in diverse geographic locations. The base station 105 may have an antenna array with several rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted through the antenna ports.

[0068]

[0074] A base station 105 or a UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may be transmitted by a transmitting device, for example, via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). The different spatial layers may be associated with different antenna ports used for channel measurements and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0069]

[0075] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used in a transmitting or receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array encounter constructive interference and other signals encounter destructive interference. Adjustment of signals communicated through antenna elements may include the transmitting or receiving device applying an amplitude offset, a phase offset, or both to signals conveyed through antenna elements associated with the device. The adjustment associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device, or to some other orientation).

[0070]

[0076] As described herein, the UE 115 can adjust the number of receivers active at the UE 115 based on the BWPs the UE is currently using (e.g., transmitting or receiving signals in) or has been instructed to use. For example, the UE 115 can receive an instruction from the base station to activate a BWP from a set of BWPs configured for the UE 115. The set of BWPs may include BWPs of the same size (e.g., same bandwidth) or BWPs of different sizes (e.g., different bandwidths). If the base station 105 instructs the UE 115 to activate a large BWP (e.g., a BWP with a bandwidth above a threshold), the UE 115 can increase the number of active receivers (e.g., the UE 115 can activate four receivers). Alternatively, if the base station 105 instructs the UE 115 to activate a small BWP (e.g., a BWP with a bandwidth below a threshold), the UE 115 can decrease the number of active receivers (e.g., the UE 115 can activate two receivers). Additionally, in some examples, the UE 115 may monitor a downlink grant from the base station 105 while operating in an active BWP and adjust the number of active receivers based on whether the UE 115 received a downlink grant from the base station 105. Using these and other techniques described herein, the UE 115 may adjust the number of active receivers based on data traffic, which may allow the UE 115 to conserve power.

[0071]

[0077] 2 illustrates an example of a wireless communication system 200 supporting receiver adjustment for wireless communications according to aspects of the disclosure. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be examples of the base station 105 and the UE 115 described with reference to FIG. 1. In some examples, the base station 105-a and the UE 115-a may be located within a coverage area 110-a.

[0072]

[0078] In some examples, the wireless communication system 200 may support MIMO communication. MIMO communication may enable a wireless device (e.g., a base station 105-a or a UE 115-a) to transmit and receive two or more signals on the same time resource. In one example, the two or more signals may carry the same data (e.g., for diversity reasons). In another example, the wireless device may split the data into two or more parts, and each of the two or more signals may carry a portion of the data (e.g., spatial multiplexing).

[0073]

[0079] A receiving device (e.g., UE 115-a) may include multiple receivers to receive two or more signals simultaneously, whether supporting MIMO or the like. The quantity of receivers in a wireless device may correspond to the quantity of signals the wireless device can receive on the same time resource. For example, UE 115-a may include four receivers 205 (e.g., receiver 205-a, receiver 205-b, receiver 205-c, and receiver 205-d), such that UE 115-a can simultaneously receive up to four signals from another wireless device (e.g., base station 105-a) when all four receivers 205 are active. In some examples, activating a threshold number of receivers 205 (e.g., four receivers) in UE 115-a may increase data throughput in situations of high data traffic (e.g., data traffic above a threshold), while activating a threshold number of receivers 205 in UE 115-a in situations of low data traffic (e.g., data traffic below a threshold) may not increase data throughput and may result in unnecessary power consumption.

[0074]

[0080] In some examples, a wireless device that supports MIMO communication or otherwise includes multiple receivers may undergo a BWP switch or otherwise start using a BWP. For example, the base station 105-a may configure the UE 115-a with a set of BWPs (e.g., up to four BWPs). In some examples, each BWP in the set of BWPs may be a BWP of the same size (e.g., spanning the same amount of frequency or bandwidth). In another example, at least two BWPs in the set of BWPs may be of different sizes (e.g., spanning different amounts of frequency or bandwidth). In some examples, a single BWP in the set of BWPs for the uplink or downlink may be active at a time. That is, the base station 105-a and the UE 115-a may communicate with each other using a single BWP at a given time. In some examples, the base station 105-a may configure the UE 115-a to initiate a BWP switch or otherwise start using a BWP based on the level of incoming data traffic. For example, the UE 115-a may initially operate in a small BWP (e.g., a BWP of 15 kHz). If the base station 105-a expects high data traffic, the base station 105-a may send a BWP switch indication 210 to the UE 115-a (e.g., via downlink control information (DCI)) instructing the UE 115-a to switch to a large BWP (e.g., 60 kHz). Upon receiving the BWP switch indication 210, the UE 115-a may switch from operating in the small BWP to operating in the large BWP and communicate with the base station 105-a using the large BWP.

[0075]

[0081] As described herein, the UE 115-a can adjust the quantity of active receivers based on the active BWP. In one example, the UE 115-a can be configured with BWPs of different sizes. For example, the UE 115-a can be configured with a set of BWPs, where the set of BWPs includes at least one large BWP and at least one small BWP. The UE 115-a can determine whether a BWP in the set is large or small by comparing the BWP to a threshold. If the frequency span of the BWP is above the threshold, the UE 115-a can consider the BWP to be large. If the frequency span of the BWP is below the threshold, the UE 115-a can consider the BWP to be small. In some examples, the UE 115-a can receive a BWP switch indication 210 from the base station 105-a instructing the UE 115-a to switch to a large BWP (e.g., from a small BWP or from a large BWP). As described above, switching to a large BWP may indicate that data traffic may increase or remain above a threshold. Thus, upon receiving a BWP switch indication 210, the UE 115-a may activate (or keep active) all of the receivers 205 available to the UE 115-a. For example, the UE 115-a may activate (or keep active) receivers 205-a, 205-b, 205-c, and 205-d (e.g., operate according to 4Rx). In some examples, the UE 115-a may keep all of the receivers 205 active until the UE 115-a receives another BWP switch indication 210 from the base station 105-a.

[0076]

[0082] In another example, the UE 115-a may activate a downlink inactivity timer when it receives a BWP switch indication 210 that instructs the UE 115-a to switch to a large BWP. If the UE 115-a does not receive a downlink grant 215 from the base station 105-a before the timer expires, the UE 115-a may reduce the number of active receivers 205 at the UE 115-a (e.g., deactivate one or more receivers 205). For example, the UE 115-a may deactivate receivers 205-c and 205-d and keep receivers 205-a and 205-b active (e.g., operate according to 2Rx). In some examples, if the UE 115-a detects a downlink grant 215, the UE 115-a may reactivate one or more receivers 205. That is, the UE 115-a may detect a downlink grant some time after expiration of the downlink inactivity timer and reactivate receivers 205-c and 205-d. Alternatively, the UE 115-a may detect a downlink grant 215 before expiration of the downlink inactivity timer. In such a case, the UE 115-a may keep all of the receivers 205 active for at least the entire duration of the large BWP.

[0077]

[0083] In another example, the UE 115-a may receive a BWP switch indication 210 from the base station 105-a instructing the UE 115-a to switch to a small BWP (e.g., from a small BWP or from a large BWP). As described above, switching to a small BWP may indicate that data traffic may drop or remain below a threshold. That is, upon receiving the BWP switch indication 210 from the base station 105-a, the UE 115-a may reduce the number of active receivers 205 in the UE 115-a (e.g., deactivate one or more of the receivers 205). For example, the UE 115-a may deactivate receiver 205-c and receiver 205-d and keep receiver 205-a and receiver 205-b active (e.g., operate according to 2Rx).

[0078]

[0084] Alternatively, the UE 115-a may be configured with BWPs of the same size. For example, the UE 115-a may be configured with a set of BWPs, each BWP of the set being the same size (e.g., spanning the same amount of frequencies). In such an example, upon receiving a BWP switching indication 210 instructing the UE 115-a to switch to another BWP of the same size, the UE 115-a may activate a downlink inactivity timer. If the UE 115-a does not receive a downlink grant 215 from the base station before the downlink inactivity timer expires, the UE 115-a may reduce the number of active receivers 205 in the UE 115-a (e.g., deactivate one or more receivers 205). For example, the UE 115-a may deactivate receiver 205-c and receiver 205-d and keep receiver 205-a and receiver 205-b active (e.g., operate according to 2Rx). In some examples, if the UE 115-a detects the downlink grant 215, the UE 115-a may increase the number of active receivers 205 in the UE 115-a (e.g., reactivate one or more receivers 205). That is, the UE 115-a may detect the downlink grant some time after expiration of the downlink inactivity timer and reactivate receivers 205-c and 205-d. Alternatively, the UE 115-a may detect the downlink grant 215 before expiration of the downlink inactivity timer. In such a case, the UE 115-a may keep all of the receivers 205 active for at least the entire duration of the BWP.

[0079]

[0085] In some examples, before the UE 115-a can deactivate one or more receivers 205, the UE 115-a can undergo a feedback detection procedure. During the feedback detection procedure, the UE 115-a can transmit one or more messages 220 to the base station 105-a, which can indicate (e.g., reflect) that the UE 115-a is reducing the number of its active receivers 205. For example, upon switching to a small BWP or upon expiration of a downlink inactivity timer, the UE 115-a can determine to reduce the number of active receivers 205 from a first quantity of active receivers (e.g., four receivers) to a second quantity of active receivers (e.g., two active receivers). Before reducing the number of active receivers in the UE 115-a, the UE 115-a can keep the first quantity of receivers active to receive and decode downlink signals from the base station 105-a according to a format associated with the second quantity of active receivers and transmit one or more messages 220 to the base station 105-a. For example, if the UE 115-a decides to reduce from four active receivers to two active receivers, the UE 115-a may transmit one or more two-layer signals or messages (e.g., two-layer CSF reports or two-layer SRS). In some examples, when the UE 115-a transmits one or more feedback messages to the base station 105-a, the UE 115-a may start a first timer (e.g., W 2RXIn one embodiment, the UE 115-a may activate a downlink grant 215 (e.g., a 3 / 4 layer grant) associated with a first quantity of active receivers before the expiration of the first timer. If the UE 115-a does not receive a downlink grant 215 (e.g., a 3 / 4 layer grant) associated with a first quantity of active receivers before the expiration of the first timer, the UE 115-a may reduce the number of active receivers from the first quantity of active receivers to a second quantity of active receivers upon expiration of the first timer. Alternatively, if the UE 115-a receives a downlink grant 215 (e.g., a 3 / 4 layer grant) associated with a first quantity of active receivers before the expiration of the first timer, the UE 115-a may activate a second timer (e.g., a 3 / 4 layer grant) associated with a first quantity of active receivers before the expiration of the first timer. FS A timer may be activated to reduce the number of active receivers from a first quantity of active receivers to a second quantity of active receivers upon expiration of the first timer and the second timer.

[0080]

[0086] In some examples, the UE 115-a may reduce the number of active receivers from a first quantity of active receivers to a second quantity of active receivers, and the base station 105-a may transmit one or more downlink grants 215 associated with the first quantity of receivers to the UE 115-a. In such a case, after reducing the number of active receivers, the UE 115-a may monitor one or more downlink grants 215 associated with the first quantity of receivers. If a downlink grant 215 associated with the first quantity of receivers is detected, the UE 115-a may activate a downlink inactivity timer, increase the number of active receivers for the duration of the downlink inactivity timer, and reduce the number of active receivers upon expiration of the downlink inactivity timer.

[0081]

[0087] 3 illustrates an example of a BWP switching scheme 300 supporting receiver adjustment for wireless communication according to aspects of the disclosure. In some examples, the BWP switching scheme 300 may implement aspects of the wireless communication system 100 and the wireless communication system 200. For example, the BWP switching scheme 300 may include a receiver 310 that may be an example of the receiver 205 described with reference to FIG. 2. In some examples, a UE may implement the BWP switching scheme 300 to adjust the number of active receivers at the UE.

[0082]

[0088] In some examples, the base station may configure the UE with multiple BWPs 305 (up to four BWPs). For example, the base station may configure the UE with BWPs 305-a and 305-b. The BWP 305-a may be considered a large BWP (e.g., spanning an amount of frequencies above a threshold) and the BWP 305-b may be considered a small BWP (e.g., spanning an amount of frequencies below a threshold). The UE may initially operate within the BWP 305-a and communicate with the base station using four active receivers. For example, the UE 115 may communicate with the base station using receivers 310-a, 310-b, 310-c, and 310-d. Thus, the UE may be capable of receiving 3-layer and 4-layer transmissions from the base station.

[0083]

[0089] In some examples, the base station may expect a decrease in data traffic. In such a case, the base station may send a BWP switch indication (e.g., an activation message for a currently unused BWP 305) to the UE at t0. The BWP switch indication may instruct the UE to switch from BWP 305-a to BWP 305-b (e.g., may indicate that the UE should start using BWP 305-b, which may implicitly indicate that the UE should stop using BWP 305-a). In response to the BWP switch indication, the UE may activate BWP 305-b at t1 and reduce the number of active receivers from a first quantity of active receivers (e.g., four active receivers) to a second quantity of active receivers (e.g., two active receivers). For example, the UE may deactivate receiver 310-c and receiver 310-d and keep receiver 310-a and receiver 310-b in an active state.

[0084]

[0090] Before reducing the number of active receivers 310 in the UE, the UE may perform a receiver feedback procedure to inform the base station of the adjustment of the active receivers in the UE. For example, before reducing the number of active receivers in the UE and after activating the BWP 305-b at t1, the UE may transmit one or more messages or other signaling to the base station according to a format associated with a second quantity of active receivers and activate a first timer at t2. For example, the UE may transmit a two-layer CSF report, a two-layer SRS, or both to the base station. From t1 to t2, the UE may operate using the first quantity of active receivers and receive and decode downlink signals from the base station. The first timer may expire at t3. If the UE does not receive one or more (or some threshold quantity) downlink grants associated with the first quantity of active receivers from t2 to t3, the UE may reduce the number of active receivers from the first quantity of active receivers to a second quantity of active receivers at or shortly after t3. If the UE receives one or more downlink grants associated with a first quantity of active receivers from t2 to t3, the UE may activate a second timer at t3. The second timer may expire at t4. In such a case, the UE may reduce the number of active receivers from the first quantity of active receivers to a second quantity of active receivers at or shortly after t4. That is, the UE may reduce the number of active receivers after the first and second timers. In some examples, the UE may operate with the second quantity of active receivers until it receives another BWP switching indication, for example, at t5.

[0085]

[0091] In some examples, the base station may expect an increase in data traffic. In such a case, at t5, the base station may send a BWP switch indication to the UE instructing the UE to switch from BWP 305-b to BWP 305-a, and may activate BWP 305-a at t6. In one example, activating BWP 305-a may cause the UE to increase the number of active receivers from a second quantity of active receivers to a third quantity of active receivers, e.g., at t 10 A third quantity of active receivers may be utilized until another BWP switching indication is received at t. For example, the UE may activate receiver 310-c and receiver 310-d, and receiver 310-a and receiver 310-b may remain in the active state. In another example, the UE may activate a downlink inactivity timer at t. The downlink inactivity timer may expire at t. If the UE receives one or more downlink grants from the base station before the downlink inactivity timer expires at t, the UE may activate a downlink inactivity timer at t. If the UE receives one or more downlink grants from the base station before the downlink inactivity timer expires at t, the UE may activate a downlink inactivity timer at t. 11 The UE may not adjust the number of active receivers at the UE and may operate using the third quantity of active receivers until another BWP switching indication is received at t7. If the UE does not receive one or more downlink grants from the base station before the downlink inactivity timer expires at t7, the UE may reduce the number of active receivers at the UE from the third quantity of active receivers to a fourth quantity of active receivers. For example, the UE may deactivate receiver 310-c and receiver 310-d, and receiver 310-a and receiver 310-b may remain in the active state.

[0086]

[0092] Before reducing the number of active receivers 310 in the UE, the UE may perform receiver feedback or other signaling procedures, which may inform the base station of the adjustment of the active receivers in the UE. For example, before reducing the number of active receivers in the UE, the UE may transmit one or more feedback messages to the base station according to a format associated with a fourth quantity of active receivers and activate a first timer at t8. For example, the UE may transmit a two-layer CSF report, a two-layer SRS, or both to the base station. The first timer may expire at t9. If the UE does not receive one or more downlink grants associated with a third quantity of active receivers from t8 to t9, the UE may reduce the quantity of active receivers from the third quantity of active receivers to the fourth quantity of active receivers at or shortly after t9. If the UE receives one or more downlink grants associated with a first quantity of active receivers from t8 to t9, the UE may activate a second timer at t9. The second timer may expire at t9. 10 When the second timer expires, the UE may 10 In or t 10 In some examples, the UE may reduce the number of active receivers from a third quantity of active receivers to a fourth quantity of active receivers immediately after t. That is, the UE may reduce the number of active receivers after the first timer and the second timer. 11 The UE may operate with the fourth number of active receivers until it receives another BWP switching indication at .

[0087]

[0093] 4 illustrates an example of a BWP switching scheme 400 supporting receiver adjustment for wireless communication according to aspects of the disclosure. In some examples, the BWP switching scheme 400 may implement aspects of the wireless communication system 100, the wireless communication system 200, or the BWP switching scheme 300. For example, the BWP switching scheme 400 may include a receiver 410 that may be an example of the receiver 205 and the receiver 310 described with reference to FIGS. 2 and 3. In some examples, a UE may implement the BWP switching scheme 400 to adjust the number of active receivers at the UE.

[0088]

[0094] In some examples, a base station may configure a UE with multiple BWPs 405 (up to four BWPs). For example, a base station may configure a UE with a BWP 405-a and a BWP 405-b. The BWPs 405-a and 405-b may be considered to be of the same size (e.g., spanning a similar amount of frequencies). The UE may initially operate within the BWP 405-a and communicate with the base station using a first number of active receivers (e.g., four receivers). For example, the UE may communicate with the base station using receivers 410-a, 410-b, 410-c, and 410-d. Thus, the UE may be capable of receiving 3-layer and 4-layer transmissions from the base station.

[0089]

[0095] In some examples, at t0, the base station may send a BWP switch indication to the UE instructing the UE to switch from BWP 405-a to BWP 405-b, and may activate BWP 405-b at t1 (e.g., may send an activation message for BWP 405-b, which may implicitly indicate that the UE should stop using BWP 405-a). Upon activating BWP 405-a, the UE may maintain a first number of active receivers and activate a downlink inactivity timer at T1. The downlink inactivity timer may expire at t2. If the UE receives one or more downlink grants from the base station before the downlink inactivity timer expires at t2, the UE may not adjust the number of active receivers at the UE and may operate with the first number of active receivers until, for example, another BWP switch indication is received at t6. If the UE does not receive one or more downlink grants from the base station before the downlink inactivity timer expires at t2, the UE may reduce the number of active receivers at the UE from a first quantity of active receivers to a second quantity of active receivers (e.g., two active receivers). For example, the UE may deactivate receiver 410-c and receiver 410-d, and receiver 410-a and receiver 410-b may remain in an active state.

[0090]

[0096] Before reducing the number of active receivers 410 in the UE, the UE may perform a receiver feedback procedure to inform the base station of the adjustment of the active receivers in the UE. For example, before reducing the number of active receivers in the UE, the UE may transmit one or more messages or other signaling to the base station according to a format associated with the second quantity of active receivers and activate a first timer at t3. For example, the UE may transmit a two-layer CSF report, a two-layer SRS, or both to the base station. The first timer may expire at t4. If the UE does not receive one or more downlink grants associated with the first quantity of active receivers from t3 to t4, the UE may reduce the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers at or shortly after t4. If the UE receives one or more downlink grants associated with the first quantity of active receivers from t3 to t4, the UE may activate a second timer at t4. The second timer may expire at t5. When the second timer expires, the UE may reduce the number of active receivers from the first quantity of active receivers to the second quantity of active receivers at or shortly after t5. That is, the UE may reduce the number of active receivers after the first and second timers. In some examples, the UE may operate with the second quantity of active receivers until the UE receives another BWP switching indication, for example, at t6.

[0091]

[0097] FIG. 5 illustrates an example of a process flow 500 supporting receiver adjustment for wireless communication according to aspects of the disclosure. In some examples, the process flow 500 may implement or be implemented by aspects of the wireless communication system 100, the wireless communication system 200, the BWP switching scheme 300, or the BWP switching scheme 400. For example, the process flow 500 may be implemented by the base station 105-b and the UE 115-b, which may be examples of the base station 105 and the UE 115 described with reference to FIG. 1 and FIG. 2. The process flow 500 may involve the UE 115-b adjusting the quantity of active receivers based on the BWP switch. The following alternative examples may be implemented, where some steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below or further steps may be added.

[0092]

[0098] In some examples, the base station 105-b can configure the UE 115-b with a set of BWPs (e.g., up to four downlink BWPs and up to four uplink BWPs). The set of BWPs may include BWPs of the same size (e.g., BWPs spanning the same amount of resource blocks) or the set of BWPs may include BWPs of different sizes (e.g., BWPs spanning different amounts of resource blocks). When the set of BWPs includes BWPs of different sizes, the set of BWPs may include at least one large BWP (e.g., BWPs spanning an amount of resource blocks above a threshold) and at least one small BWP (e.g., BWPs spanning an amount of resource blocks below a threshold). An example of a large BWP may be a BWP spanning 273 resource blocks, and an example of a small BWP may be a BWP spanning 64 resource blocks.

[0093]

[0099] At 505, the UE 115-b may receive a BWP activation message from the base station 105-b. The BWP activation message may indicate activation of a BWP of the set of BWPs. In the case of BWPs of different sizes, the BWP activation message may indicate activation of a large BWP or a small BWP of the set of BWPs.

[0094]

[0100] At 510, the UE 115-b may undergo a BWP switch based on the BWP activation message received at 505. That is, the UE may deactivate a previously active BWP in the set of BWPs and activate a BWP indicated in the BWP activation message. In the case of a different BWP, the UE 115-b may switch from a large BWP to a small BWP, from a small BWP to a large BWP, from a large BWP to a large BWP, or from a small BWP to a small BWP.

[0095]

[0101] At 515, the UE 115-b may potentially monitor a downlink grant from the base station 105-b. For example, the UE 115-b may monitor a downlink grant from the base station 105-b upon activating a large BWP at 510. In another example, the UE 115-b may monitor a downlink grant from the base station 105-b upon activating a BWP of a set of BWPs of the same size. In some examples, the BWP activation message may trigger a downlink inactivity timer, and the UE 115-b may monitor a downlink grant from the base station 105-b based on the downlink inactivity timer. In some examples, the base station 105-b may configure the UE 115-b with a downlink inactivity timer via radio resource control (RRC) signaling.

[0096]

[0102] At 520, the UE 115-b may adjust the number of active receivers in the UE 115-b. In some examples, the UE 115-b may include a first amount of receivers (e.g., four receivers). Upon activating the large BWP or the same size BWP at 510, the UE 115-b may activate the first amount of receivers (e.g., activate a threshold amount of receivers). If the UE 115-b does not detect one or more downlink grants from the base station 105-b at 515 (e.g., upon expiration of a downlink inactivity timer), the UE 115-b may reduce the number of active receivers in the UE 115-b. For example, the UE 115-b may keep a second amount of receivers (e.g., two receivers) active and deactivate the rest. In some examples, if the UE 115-b detects a downlink grant after reducing the number of active receivers, the UE 115-b may increase the number of active receivers. That is, the UE 115-b may activate a first quantity of receivers. Alternatively, if the UE 115-b detects one or more downlink grants from the base station 105-b at 515 (e.g., before the downlink inactivity timer expires), the UE 115-b may maintain the number of active receivers in the UE 115-b. For example, the UE 115-b may keep a first quantity of receivers active. Upon activating the small BWP, the UE 115-b may reduce the number of active receivers in the UE 115-b. For example, the UE 115-b may keep a second quantity of receivers active and deactivate the rest.

[0097]

[0103] Before the UE 115-b reduces the number of active receivers at the UE 115-b, the UE 115-b may undergo a receiver feedback detection procedure. For example, the UE 115-b may decide to keep a second quantity of receivers (e.g., two receivers) active and deactivate the rest. Before the UE 115-b can deactivate the receivers, the UE 115-b may transmit one or more messages (e.g., feedback messages) to the base station 105-b at 525. The one or more messages may be formatted in a manner that indicates or otherwise reflects a reduction in the number of active receivers at the UE 115-b. For example, if the number of active receivers is reduced to two, the one or more messages may be a two-layer CSF report, a two-layer SRS, or both.

[0098]

[0104] Upon transmitting the one or more messages to the base station 105-b, the UE 115-b may activate a first timer and monitor for a grant from the base station 105-b (e.g., a three-layer grant or a four-layer grant if the UE 115-b includes four receivers). If the UE 115-b fails to detect a grant from the base station 105-b before the first timer expires, the UE 115-b may reduce the number of active receivers in the UE 115-b. If the UE 115-b detects a grant from the base station 105-b, the UE 115-b may activate a second timer and reduce the number of active receivers in the UE 115-b upon expiration of the second timer. In some examples, the base station 105-b may configure the UE 115-b with the first timer and the second timer via RRC signaling.

[0099]

[0105] 6 illustrates a block diagram 600 of a device 605 supporting receiver tuning for wireless communications according to an aspect of the disclosure. The device 605 may be an example of an aspect of a UE 115 described herein. The device 605 may include a set of receivers 610, a set of transmitters 615, and a communications manager 620. The device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).

[0100]

[0106] The receiver 610 may provide a means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to receiver tuning for wireless communications). The information may be passed to other components of the device 605. The receivers 610 may each utilize a single antenna or a set of multiple antennas. The device 610 may be an example of the receiver 205, receiver 310, or receiver 410, each described herein.

[0101]

[0107] 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, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to receiver tuning for wireless communications). In some examples, the transmitter 615 may be co-located with the receiver 610 within a transceiver module. The transmitters 615 may each utilize a single antenna or a set of multiple antennas. In some cases, the device 605 may alternatively include only one antenna 615.

[0102]

[0108] The communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be examples of means for performing various aspects of the receiver coordination for wireless communications described herein. For example, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0103]

[0109] In some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in a communications management circuit). The hardware may include a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in this 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 the processor executing instructions stored in the memory).

[0104]

[0110] Additionally or alternatively, in some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). If implemented in code executed by a processor, the functions of the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor (e.g., configured as or otherwise supporting a means for performing the functions described in this disclosure), a DSP, a central processing unit (CPU), an ASIC, an FPGA, or any combination thereof, or other programmable logic device.

[0105]

[0111] In some examples, the communications manager 620 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise working in conjunction with the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to receive information, transmit information, or perform various other operations described herein.

[0106]

[0112] The communications manager 620 can support wireless communications in a UE according to examples disclosed herein. For example, the communications manager 620 can be configured as or otherwise support a means for receiving an activation message for a second BWP of a set of multiple BWPs configured for the UE from a base station (e.g., via one or more of the receivers 610). The communications manager 620 can be configured as or otherwise support a means for switching from operation in a first BWP to operation in a second BWP based on the activation message for the second BWP. The communications manager 620 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE (e.g., a quantity of active receivers included in the set of receivers 610) based on switching from operation in the first BWP to operation in the second BWP.

[0107]

[0113] Additionally or alternatively, the communications manager 620 can support wireless communications in the UE according to examples disclosed herein. For example, the communications manager 620 can be configured as or otherwise support a means for receiving an activation message for a BWP of a set of multiple BWPs configured for the UE from a base station (e.g., via one or more of the receivers 610). The communications manager 620 can be configured as or otherwise support a means for monitoring one or more downlink grants while operating in the BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP. The communications manager 620 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE (e.g., a quantity of active receivers included in the set of receivers 610) based on whether one or more downlink grants are detected.

[0108]

[0114] By including or configuring a communications manager 620 according to examples described herein, the device 605 (e.g., a processor controlling or otherwise coupled to the receiver 610, the transmitter 615, the communications manager 620, or a combination thereof) can support techniques for reduced power consumption. Utilizing a small number of active receivers (e.g., two receivers) during periods of low data traffic can allow the device 605 to conserve power.

[0109]

[0115] 7 illustrates a block diagram 700 of a device 705 supporting receiver tuning for wireless communications according to an aspect of the disclosure. The device 705 may be an example of an aspect of a device 605 or a UE 115 described herein. The device 705 may include a set of receivers 710, a set of transmitters 715, and a communications manager 720. The device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0110]

[0116] The receiver 710 may provide a means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to receiver tuning for wireless communications). The information may be passed to other components of the device 705. The receivers 710 may each utilize a single antenna or a set of multiple antennas. The device 710 may be an example of the receiver 205, receiver 310, receiver 410, or receiver 610, each described herein.

[0111]

[0117] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to receiver tuning for wireless communications). In some examples, the transmitter 715 may be co-located with the receiver 710 within a transceiver module. The transmitters 715 may each utilize a single antenna or a set of multiple antennas. In some cases, the device 705 may alternatively include only one antenna 715.

[0112]

[0118] The device 705 or various components thereof may be an example of a means for performing various aspects of receiver coordination for wireless communication described herein. For example, the communications manager 720 may include a message receiver 725, a BWP switching manager 730, an active receiver manager 735, a monitoring component 740, or any combination thereof. The communications manager 720 may be an example of an aspect of the communications manager 620 described herein. In some examples, the communications manager 720 or various components thereof may be configured to use or otherwise cooperate with the receiver 710, the transmitter 715, or both to perform various operations (e.g., receive, monitor, transmit). For example, the communications manager 720 may be integrated in combination with the receiver 710, the transmitter 715, or both to receive information from the receiver 710, send information to the transmitter 715, or receive information, transmit information, or perform various other operations described herein.

[0113]

[0119] The communications manager 720 can support wireless communications in the UE according to examples disclosed herein. The message receiver 725 can be configured as or otherwise support a means for receiving an activation message for a second BWP of a set of multiple BWPs configured for the UE from a base station (e.g., via one or more of the receivers 710). The BWP switching manager 730 can be configured as or otherwise support a means for switching from operation in a first BWP to operation in a second BWP based on the activation message for the second BWP. The active receiver manager 735 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE (e.g., a quantity of active receivers included in the set of receivers 710) based on switching from operation in a first BWP to operation in a second BWP.

[0114]

[0120] Additionally or alternatively, the communications manager 720 can support wireless communications in the UE according to examples disclosed herein. The message receiver 725 can be configured as or otherwise support a means for receiving an activation message for a BWP of a set of multiple BWPs configured for the UE from a base station (e.g., via one or more of the receivers 710). The monitoring component 740 can be configured as or otherwise support a means for monitoring one or more downlink grants while operating in a BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP. The active receiver manager 735 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE (e.g., a quantity of active receivers included in the set of receivers 710) based on whether one or more downlink grants are detected.

[0115]

[0121] 8 illustrates a block diagram 800 of a communications manager 820 supporting receiver coordination for wireless communications according to an aspect of the disclosure. Communications manager 820 may be an example of an aspect of communications manager 620, communications manager 720, or both described herein. Communications manager 820, or various components thereof, may be an example of a means for performing various aspects of receiver coordination for wireless communications described herein. For example, communications manager 820 may include a message receiver 825, a BWP switching manager 830, an active receiver manager 835, a monitoring component 840, a timer manager 850, a feedback manager 855, or any combination thereof. Each of these components may communicate with one another directly or indirectly (e.g., via one or more buses).

[0116]

[0122] The communications manager 820 can support wireless communications in the UE according to examples disclosed herein. The message receiver 825 can be configured as or otherwise support a means for receiving an activation message for a second BWP of a set of multiple BWPs configured for the UE from a base station. The BWP switching manager 830 can be configured as or otherwise support a means for switching from operating in a first BWP to operating in a second BWP based on the activation message for the second BWP. The active receiver manager 835 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE based on switching from operating in a first BWP to operating in a second BWP.

[0117]

[0123] In some examples, the monitoring component 840 may be configured as or otherwise support a means for monitoring one or more downlink grants from the base station while operating within the second BWP, and adjusting the quantity of active receivers at the UE is based on monitoring the one or more downlink grants from the base station.

[0118]

[0124] In some examples, the timer manager 850 may be configured as or otherwise support a means for activating a timer based on switching from operating in a first BWP to operating in a second BWP, and monitoring one or more downlink grants from the base station is based on the timer.

[0119]

[0125] In some examples, a bandwidth associated with the second BWP is greater than a threshold. In some examples, adjusting a quantity of active receivers at the UE is based on a bandwidth associated with the second BWP being greater than a threshold.

[0120]

[0126] In some examples, the monitoring component 840 may be configured or otherwise support a means for failing to detect one or more downlink grants from the base station while operating within the second BWP. In some examples, to adjust the quantity of active receivers in the UE, the active receiver manager 835 may be configured or otherwise support a means for reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on failing to detect one or more downlink grants from the base station.

[0121]

[0127] In some examples, the feedback manager 855 may be configured as or otherwise support a means for transmitting signaling based on the second quantity of active receivers to the base station before reducing the quantity of active receivers in the UE.

[0122]

[0128] In some examples, to support transmission of signaling based on the second quantity of active receivers, the feedback manager 855 may be configured as or otherwise support a means for transmitting a CSF, an SRS, or both, to the base station in accordance with a format associated with the second quantity of active receivers.

[0123]

[0129] In some examples, the timer manager 850 may be configured as or otherwise support a means for activating a timer based on transmitting signaling, and reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on expiration of the timer.

[0124]

[0130] In some examples, the timer manager 850 may be configured as or otherwise support a means for activating a second timer based on whether one or more second downlink grants are detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is performed based on expiration of the timer and the second timer.

[0125]

[0131] In some examples, the monitoring component 840 may be configured as or otherwise support a means for detecting one or more second downlink grants from the base station while operating within the second BWP and after reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers. In some examples, the active receiver manager 835 may be configured as or otherwise support a means for increasing a quantity of active receivers in the UE from a second quantity of active receivers to a third quantity of active receivers based on detecting one or more second downlink grants from the base station.

[0126]

[0132] In some examples, to support adjustment of the number of active receivers in the UE, the active receiver manager 835 may be configured as or otherwise support a means for reducing the number of active receivers in the UE from a first number of active receivers to a second number of active receivers based on the bandwidth associated with the second BWP falling below a threshold.

[0127]

[0133] In some examples, the feedback manager 855 may be configured as or otherwise support a means for transmitting signaling based on the second quantity of active receivers to the base station before reducing the quantity of active receivers in the UE.

[0128]

[0134] In some examples, to support transmission of signaling based on the second quantity of active receivers, the feedback manager 855 may be configured as or otherwise support a means for transmitting a CSF, an SRS, or both, to the base station in accordance with a format associated with the second quantity of active receivers.

[0129]

[0135] In some examples, the timer manager 850 may be configured as or otherwise support a means for activating a timer based on sending signaling, and reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers is performed based on expiration of the timer.

[0130]

[0136] In some examples, the timer manager 850 may be configured with or otherwise support a means for activating a second timer based on whether one or more second downlink grants are detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is performed based on expiration of the timer and the second timer.

[0131]

[0137] In some examples, to support the adjustment of the quantity of active receivers in the UE, the active receiver manager 835 may be configured as or otherwise support a means for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers, and the method further includes. In some examples, to support the adjustment of the quantity of active receivers in the UE, the monitoring component 840 may be configured as or otherwise support a means for detecting one or more downlink grants from a base station that schedules communications associated with the first quantity of active receivers. In some examples, to support the adjustment of the quantity of active receivers in the UE, the active receiver manager 835 may be configured as or otherwise support a means for increasing the quantity of active receivers from a second quantity of active receivers to a first quantity of active receivers during a time period based on detecting one or more downlink grants. In some examples, to support the adjustment of the quantity of active receivers in the UE, the active receiver manager 835 may be configured as or otherwise support a means for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers after a time period.

[0132]

[0138] Additionally or alternatively, the communications manager 820 can support wireless communications in the UE according to examples disclosed herein. In some examples, the message receiver 825 can be configured as or otherwise support a means for receiving an activation message for a BWP of a set of multiple BWPs configured for the UE from a base station. The monitoring component 840 can be configured as or otherwise support a means for monitoring one or more downlink grants while operating in a BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP. In some examples, the active receiver manager 835 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE based on whether one or more downlink grants are detected.

[0133]

[0139] In some examples, the monitoring component 840 may be configured or otherwise support a means for failing to detect one or more downlink grants from a base station while operating within the BWP. In some examples, to adjust the quantity of active receivers in the UE, the active receiver manager 835 may be configured or otherwise support a means for reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on failing to detect one or more downlink grants from the base station.

[0134]

[0140] In some examples, the feedback manager 855 may be configured as or otherwise support a means for transmitting signaling based on the second quantity of active receivers to the base station before reducing the quantity of active receivers in the UE.

[0135]

[0141] In some examples, to support transmission of signaling based on the second quantity of active receivers, the feedback manager 855 may be configured as or otherwise support a means for transmitting a CSF, an SRS, or both, to the base station in accordance with a format associated with the second quantity of active receivers.

[0136]

[0142] In some examples, the timer manager 850 may be configured as or otherwise support a means for activating a timer based on transmitting signaling, and reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on expiration of the timer.

[0137]

[0143] In some examples, the timer manager 850 may be configured with or otherwise support a means for activating a second timer based on whether one or more second downlink grants are detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is performed based on expiration of the timer and the second timer.

[0138]

[0144] In some examples, the monitoring component 840 may be configured as or otherwise support a means for detecting one or more second downlink grants from the base station while operating within the BWP and after reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers. In some examples, the active receiver manager 835 may be configured as or otherwise support a means for increasing a quantity of active receivers in the UE from a second quantity of active receivers to a third quantity of active receivers based on detecting one or more second downlink grants from the base station.

[0139]

[0145] In some examples, to support the adjustment of the quantity of active receivers in the UE, the active receiver manager 835 may be configured as or otherwise support a means for reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers, the method further includes. In some examples, to support the adjustment of the quantity of active receivers in the UE, the monitoring component 840 may be configured as or otherwise support a means for detecting one or more downlink grants from a base station that schedules communications associated with the first quantity of active receivers. In some examples, to support the adjustment of the quantity of active receivers in the UE, the active receiver manager 835 may be configured as or otherwise support a means for increasing a quantity of active receivers from a second quantity of active receivers to a first quantity of active receivers for a time period based on detecting one or more downlink grants, the method further includes. In some examples, to support adjustment of the number of active receivers in a UE, the active receiver manager 835 may be configured as or otherwise support a means for reducing the number of active receivers in the UE from a first number of active receivers to a second number of active receivers after a period of time.

[0140]

[0146] In some examples, each BWP in the set of multiple BWPs has the same bandwidth.

[0141]

[0147] FIG. 9 illustrates a diagram of a system 900 including a device 905 supporting receiver tuning for wireless communications according to an embodiment of the disclosure. The device 905 may be an example of or include components of the device 605, device 705, or UE 115 described herein. The device 905 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. The device 905 may include components for two-way voice and data communications, including components for transmitting and receiving communications, such as a communications manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, a memory 930, code 935, and a processor 940. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 945).

[0142]

[0148] The I / O controller 910 can manage input and output signals for the device 905. The I / O controller 910 can also manage peripherals that are not built into the device 905. In some cases, the I / O controller 910 can represent a physical connection or port to an external peripheral. In some cases, the I / O controller 910 can utilize an operating system, such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 910 can represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 910 may be implemented as part of a processor, such as the processor 940. In some cases, a user can interact with the device 905 through the I / O controller 910 or through hardware components controlled by the I / O controller 910.

[0143]

[0149] In some cases, the device 905 may include a single antenna 925. However, in some other cases, the device 905 may have two or more antennas 925 that may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 915 may communicate bidirectionally via one or more antennas 925, a wired link, or a wireless link as described herein. For example, the transceiver 915 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 915 may also include a modem for modulating packets and providing the modulated packets to one or more antennas 925 for transmission and demodulating packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be an example of one or more transmitters 615, one or more transmitters 715, one or more receivers 610, one or more receivers 710, or any combination or components thereof described herein.

[0144]

[0150] The memory 930 may include random access memory (RAM) and read only memory (ROM). The memory 930 may store computer readable, computer executable code 935 including instructions that, when executed by the processor 940, cause the device 905 to perform various functions described herein. The code 935 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 935 may not be directly executable by the processor 940, but may (e.g., when compiled and executed) cause a computer to perform functions described herein. In some cases, the memory 930 may include a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0145]

[0151] The processor 940 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 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be incorporated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting receiver tuning for wireless communications). For example, the device 905 or a component of the device 905 may include a processor 940 and a memory 930 coupled to the processor 940, where the processor 940 and the memory 930 are configured to perform various functions described herein.

[0146]

[0152] The communications manager 920 can support wireless communications in the UE according to examples disclosed herein. For example, the communications manager 920 can be configured as or otherwise support a means for receiving an activation message for a second BWP of a set of multiple BWPs configured for the UE from a base station (e.g., via the transceiver 915). The communications manager 920 can be configured as or otherwise support a means for switching from operation in a first BWP to operation in a second BWP based on the activation message for the second BWP. The communications manager 920 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE (e.g., a quantity of active receivers included in the transceiver 915) based on switching from operation in the first BWP to operation in the second BWP.

[0147]

[0153] Additionally or alternatively, the communications manager 920 can support wireless communications in the UE according to examples disclosed herein. For example, the communications manager 920 can be configured as or otherwise support a means for receiving an activation message for a BWP of a set of multiple BWPs configured for the UE from a base station (e.g., via the transceiver 915). The communications manager 920 can be configured as or otherwise support a means for monitoring one or more downlink grants while operating in the BWP, the one or more downlink grants being for receiving one or more downlink signals in an active BWP. The communications manager 920 can be configured as or otherwise support a means for adjusting a quantity of active receivers in the UE (e.g., a quantity of active receivers included in the transceiver 915) based on whether one or more downlink grants are detected.

[0148]

[0154] By including or configuring a communications manager 920 according to examples described herein, the device 905 can support techniques for reduced power consumption.

[0149]

[0155] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 915, the one or more antennas 925, or any combination thereof (e.g., the communications manager 920 may be configured to transmit or receive signals or messages described herein via the transceiver 915). Although the communications manager 920 is shown as a separate component, in some examples, one or more functions described with reference to the communications manager 920 may be supported by or performed by the processor 940, the memory 930, the code 935, or any combination thereof. For example, the code 935 may include instructions executable by the processor 940 to cause the device 905 to perform various aspects of receiver tuning for wireless communications described herein, or the processor 940 and the memory 930 may be otherwise configured to perform or support such operations.

[0150]

[0156] FIG. 10 illustrates a flow chart illustrating a method 1000 for supporting receiver adjustment for wireless communications according to an aspect of the disclosure. The operations of method 1000 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1000 may be performed by the UE 115 described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0151]

[0157] At 1005, the method may include receiving, from the base station, an activation message for a second BWP of the set of BWPs configured for the UE. The operations of 1005 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1005 may be performed by the message receiver 825 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1005 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0152]

[0158] At 1010, the method may include switching from operation in a first BWP to operation in a second BWP based on an activation message for the second BWP. The operation of 1010 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1010 may be performed by a BWP switching manager 830 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1010 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0153]

[0159] At 1015, the method may include adjusting a quantity of active receivers at the UE based on switching from operation in the first BWP to operation in the second BWP. The operations of 1015 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1015 may be performed by the active receiver manager 835 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1015 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0154]

[0160] FIG. 11 illustrates a flow chart illustrating a method 1100 for supporting receiver adjustment for wireless communications according to an aspect of the disclosure. The operations of method 1100 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1100 may be performed by a UE 115 as described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0155]

[0161] At 1105, the method may include receiving, from the base station, an activation message for a second BWP of the set of BWPs configured for the UE. The operations of 1105 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1105 may be performed by the message receiver 825 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1105 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0156]

[0162] At 1110, the method may include switching from operation in a first BWP to operation in a second BWP based on an activation message for the second BWP. The operation of 1110 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1110 may be performed by a BWP switching manager 830 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1110 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0157]

[0163] At 1115, the method may include monitoring one or more downlink grants from the base station while operating within the second BWP. The operations of 1115 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1115 may be performed by the monitoring component 840 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1115 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0158]

[0164] At 1120, the method may include adjusting a quantity of active receivers at the UE based on switching from operation in the first BWP to operation in the second BWP and monitoring one or more downlink grants from the base station. The operations of 1120 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1120 may be performed by the active receiver manager 835 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1120 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0159]

[0165] FIG. 12 illustrates a flow chart illustrating a method 1200 for supporting receiver adjustment for wireless communications according to aspects of the disclosure. The operations of method 1200 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1200 may be performed by the UE 115 described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0160]

[0166] At 1205, the method may include receiving, from the base station, an activation message for a second BWP of the set of BWPs configured for the UE. The operations of 1205 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1205 may be performed by the message receiver 825 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1205 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0161]

[0167] At 1210, the method may include switching from operation in a first BWP to operation in a second BWP based on an activation message for the second BWP. The operation of 1210 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1210 may be performed by a BWP switching manager 830 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1210 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0162]

[0168] At 1215, the method may include adjusting a quantity of active receivers at the UE based on switching from operation in the first BWP to operation in the second BWP and a bandwidth associated with the second BWP being greater than a threshold. The operations of 1215 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1215 may be performed by the active receiver manager 835 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1215 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0163]

[0169] FIG. 13 illustrates a flow chart illustrating a method 1300 for supporting receiver adjustment for wireless communications according to aspects of the disclosure. The operations of the method 1300 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 1300 may be performed by the UE 115 described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0164]

[0170] At 1305, the method may include receiving, from the base station, an activation message for a second BWP of the set of BWPs configured for the UE. The operations of 1305 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1305 may be performed by the message receiver 825 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1305 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0165]

[0171] At 1310, the method may include switching from operation in a first BWP to operation in a second BWP based on an activation message for the second BWP. The operation of 1310 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1310 may be performed by a BWP switching manager 830 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1310 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0166]

[0172] At 1315, the method may include reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on the bandwidth associated with the second BWP falling below a threshold. The operations of 1315 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1315 may be performed by the active receiver manager 835 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1315 may include, but is not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945, for example.

[0167]

[0173] FIG. 14 illustrates a flow chart illustrating a method 1400 for supporting receiver adjustment for wireless communications according to an aspect of the disclosure. The operations of the method 1400 may be implemented by a UE or components thereof as described herein. For example, the operations of the method 1400 may be performed by the UE 115 described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0168]

[0174] At 1405, the method may include receiving, from a base station, an activation message for one BWP of a set of BWPs configured for the UE. The operations of 1405 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a message receiver 825 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1405 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0169]

[0175] At 1410, the method may include monitoring one or more downlink grants while operating within the BWP, the one or more downlink grants being for receiving one or more downlink signals within the active BWP. The operations of 1410 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1410 may be performed by the monitoring component 840 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1410 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0170]

[0176] At 1415, the method may include adjusting a quantity of active receivers at the UE based on whether one or more downlink grants are detected. The operations of 1415 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1415 may be performed by an active receiver manager 835 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1415 may include, but is not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945, for example.

[0171]

[0177] FIG. 15 illustrates a flow chart illustrating a method 1500 for supporting receiver adjustment for wireless communications according to aspects of the disclosure. The operations of method 1500 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1500 may be performed by the UE 115 described with reference to FIGS. 1-9. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0172]

[0178] At 1505, the method may include receiving, from a base station, an activation message for a BWP among a set of BWPs configured for the UE. The operations of 1505 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a message receiver 825 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1505 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0173]

[0179] At 1510, the method may include failing to detect one or more downlink grants from a base station while operating within the BWP. The operations of 1510 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a monitoring component 840 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1510 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0174]

[0180] At 1515, the method may include reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based on failing to detect one or more downlink grants from the base station. The operations of 1515 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1515 may be performed by the active receiver manager 835 described with reference to FIG. 8. Additionally or alternatively, the means for performing 1515 may include, for example, but not necessarily, an antenna 925, a transceiver 915, a communications manager 920, a memory 930 (including code 935), a processor 940, and / or a bus 945.

[0175]

[0181] The following provides a summary of aspects of the disclosure.

[0176]

[0182] Aspect 1: A method for wireless communications in a UE, comprising: receiving, from a base station, an activation message for a second BWP of a set of multiple BWPs configured for the UE; switching from operating in a first BWP to operating in the second BWP based at least in part on the activation message for the second BWP; and adjusting a quantity of active receivers in the UE based at least in part on the switching from operating in the first BWP to operating in the second BWP.

[0177]

[0183] Aspect 2: The method of aspect 1, further comprising monitoring one or more downlink grants from the base station while operating within the second BWP, and adjusting a quantity of active receivers in the UE is based at least in part on monitoring the one or more downlink grants from the base station.

[0178]

[0184] Aspect 3: The method of aspect 2, further comprising activating a timer based at least in part on switching from operating in a first BWP to operating in a second BWP, and wherein monitoring for one or more downlink grants from the base station is based at least in part on the timer.

[0179]

[0185] Aspect 4: The method of any of aspects 1-3, wherein a bandwidth associated with the second BWP is greater than a threshold and adjusting the quantity of active receivers in the UE is based at least in part on the bandwidth associated with the second BWP being greater than a threshold.

[0180]

[0186] Aspect 5: The method of aspect 4, further comprising failing to detect one or more downlink grants from the base station while operating within the second BWP, and adjusting the quantity of active receivers in the UE comprises reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on the failing to detect one or more downlink grants from the base station.

[0181]

[0187] Aspect 6: The method of aspect 5, further comprising, prior to reducing a quantity of active receivers at the UE, transmitting signaling to a base station based at least in part on the second quantity of active receivers.

[0182]

[0188] Aspect 7: The method of aspect 6, wherein transmitting signaling based at least in part on a second quantity of active receivers comprises transmitting a CSF, an SRS, or both to a base station in accordance with a format associated with the second quantity of active receivers.

[0183]

[0189] Aspect 8: The method of any of aspects 6-7, further comprising activating a timer based on sending the signaling, and reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on expiration of the timer.

[0184]

[0190] Aspect 9: The method of aspect 8, further comprising activating a second timer based on whether one or more second downlink grants are detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is based at least in part on expiry of the timer and the second timer.

[0185]

[0191] Aspect 10: The method of any of aspects 5-9, further comprising: detecting one or more second downlink grants from the base station while operating within the second BWP; and after reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers, increasing a quantity of active receivers in the UE from a second quantity of active receivers to a third quantity of active receivers based at least in part on detecting one or more second downlink grants from the base station.

[0186]

[0192] Aspect 11: The method of any of aspects 1-3, wherein a bandwidth associated with the second BWP falls below a threshold and adjusting a quantity of active receivers in the UE comprises reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on the bandwidth associated with the second BWP falling below the threshold.

[0187]

[0193]

[0041] Aspect 12: The method of aspect 11, further comprising, prior to reducing a quantity of active receivers at the UE, transmitting signaling to a base station based at least in part on the second quantity of active receivers.

[0188]

[0194] Aspect 13: The method of aspect 12, wherein transmitting the signaling based at least in part on the second quantity of active receivers comprises transmitting a CSF, an SRS, or both to the base station in accordance with a format associated with the second quantity of active receivers.

[0189]

[0195] Aspect 14: The method of any of aspects 12-13, further comprising activating a timer based on sending the signaling, and reducing the quantity of active receivers from a first quantity of active receivers to a second quantity of active receivers based at least in part on expiration of the timer.

[0190]

[0196] Aspect 15: The method of aspect 14, further comprising activating a second timer based on whether one or more second downlink grants are detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is based at least in part on expiration of the timer and the second timer.

[0191]

[0197] Aspect 16: The method of any of aspects 1-15, wherein adjusting a quantity of active receivers in the UE comprises reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers, the method further comprising: detecting one or more downlink grants from a base station scheduling communications associated with the first quantity of active receivers; increasing the quantity of active receivers from the second quantity of active receivers to the first quantity of active receivers during a period of time based at least in part on detecting the one or more downlink grants; and reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers after the period of time.

[0192]

[0198] Aspect 17: A method for wireless communications in a UE, comprising: receiving, from a base station, an activation message for a BWP among a plurality of BWPs configured for the UE; monitoring one or more downlink grants while operating within the BWP; and adjusting a quantity of active receivers in the UE based at least in part on whether one or more downlink grants are detected, where the one or more downlink grants are for receiving one or more downlink signals within the active BWP.

[0193]

[0199] Aspect 18: The method of aspect 17, further comprising failing to detect one or more downlink grants from the base station while operating within the BWP, and adjusting the quantity of active receivers in the UE comprises reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on the failing to detect one or more downlink grants from the base station.

[0194]

[0200]

[0041] Aspect 19: The method of aspect 18, further comprising: prior to reducing a quantity of active receivers at the UE, transmitting signaling to a base station based at least in part on the second quantity of active receivers.

[0195]

[0201] Aspect 20: The method of aspect 19, wherein transmitting the signaling based at least in part on the second quantity of active receivers comprises transmitting a CSF, an SRS, or both to the base station in accordance with a format associated with the second quantity of active receivers.

[0196]

[0202] Aspect 21: The method of any of aspects 19-20, further comprising activating a timer based on sending the signaling, and reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on expiration of the timer.

[0197]

[0203] Aspect 22: The method of aspect 21, further comprising activating a second timer based on whether one or more second downlink grants are detected during a duration associated with the timer, and reducing the quantity of active receivers in the UE is based at least in part on expiration of the timer and the second timer.

[0198]

[0204] Aspect 23: The method of any of aspects 18-22, further comprising: detecting one or more second downlink grants from the base station while operating within the BWP; and after reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers, increasing a quantity of active receivers in the UE from a second quantity of active receivers to a third quantity of active receivers based at least in part on detecting one or more second downlink grants from the base station.

[0199]

[0205] Aspect 24: The method of any of aspects 17-23, wherein adjusting a quantity of active receivers in the UE comprises reducing a quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers, the method further comprising: detecting one or more downlink grants from a base station scheduling communications associated with the first quantity of active receivers; increasing the quantity of active receivers from the second quantity of active receivers to the first quantity of active receivers during a period of time based at least in part on detecting the one or more downlink grants; and reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers after the period of time.

[0200]

[0206] Example 25: The method of any of examples 17 to 24, wherein each BWP of the plurality of BWPs has the same bandwidth.

[0201]

[0207] Aspect 26: An apparatus for wireless communication in a UE, comprising: a processor; a transceiver coupled to the processor and having a plurality of receivers; and a memory coupled to the processor, wherein the memory and the processor are configured to cause the apparatus to perform any of the methods of aspects 1 to 16.

[0202]

[0208] Example 27: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any of Examples 1-16.

[0203]

[0209] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code comprising instructions executable by a processor to perform the method of any of aspects 1-16.

[0204]

[0210] Aspect 29: An apparatus for wireless communication in a UE, comprising: a processor; a transceiver coupled to the processor and having a plurality of receivers; and a memory coupled to the processor, wherein the memory and the processor are configured to cause the apparatus to perform any of the methods of aspects 17 to 25.

[0205]

[0211] Aspect 30: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any of aspects 17-25.

[0206]

[0212] Aspect 31: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code comprising instructions executable by a processor to perform any of the methods of aspects 17-25.

[0207]

[0213] It should be noted that the methods described herein describe possible implementations, that the acts and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of the methods may be combined.

[0208]

[0214] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable to other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may apply 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.

[0209]

[0215] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0210]

[0216] The various example blocks and components described in connection with the disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, an 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 alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0211]

[0217] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or a combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of the software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that portions of the functions are implemented in different physical locations.

[0212]

[0218] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable ROM (EEPROM), Flash memory, Compact Disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer readable media. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc, where disks typically reproduce data magnetically and discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer readable media.

[0213]

[0219] As used herein, including in the claims, "or" used within a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, 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). Also, the phrase "based on" as used herein should not be construed as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, the phrase "based on" as used herein should be construed similarly to the phrase "based at least in part on."

[0214]

[0220] The terms "determine" or "determining" encompass a wide variety of actions, and thus "determining" can include calculating, computing, processing, deriving, investigating, retrieving (e.g., via looking up in a table, database, or another data structure), ascertaining, and the like. "Determining" can also include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. "Determining" can also include resolving, selecting, choosing, establishing, and other such similar actions.

[0215]

[0221] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label, or any other subsequent reference label.

[0216]

[0222] The description set forth herein with respect to the accompanying drawings describes exemplary configurations and does not necessarily represent all examples that may be implemented or are within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0217]

[0223] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. 1. A method for wireless communication in a user equipment (UE), comprising: receiving an activation message for a second bandwidth portion of the plurality of bandwidth portions configured for the UE from a network device; switching from operation within a first bandwidth portion to operation within the second bandwidth portion based at least in part on the activation message for the second bandwidth portion; comparing a bandwidth associated with the second bandwidth portion to a threshold based at least in part on switching from operation within the first bandwidth portion to operation within the second bandwidth portion; adjusting a quantity of active receivers at the UE based at least in part on the bandwidth associated with the second bandwidth portion that satisfies the threshold and further based at least in part on switching from operation within the first bandwidth portion to operation within the second bandwidth portion; A method comprising:

2. monitoring one or more downlink grants from the network device while operating within the second bandwidth portion, and wherein adjusting the quantity of active receivers at the UE is based at least in part on monitoring the one or more downlink grants from the network device. activating a timer based at least in part on switching from operating in the first bandwidth portion to operating in the second bandwidth portion, wherein monitoring the one or more downlink grants from the network device is based at least in part on the timer. The method of claim 1 further comprising:

3. a bandwidth associated with the second bandwidth portion is greater than a threshold; adjusting the quantity of active receivers at the UE is based at least in part on the bandwidth associated with the second bandwidth portion being greater than the threshold. The method of claim 1.

4. and failing to detect one or more downlink grants from the network device while operating within the second bandwidth portion, wherein adjusting the quantity of active receivers at the UE further comprises: reducing the quantity of active receivers at the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on failing to detect the one or more downlink grants from the network device; sending signaling to the network device based at least in part on the second quantity of active receivers prior to reducing the quantity of active receivers at the UE; The method of claim 3 comprising:

5. Transmitting the signaling based at least in part on the second quantity of active receivers includes: transmitting channel condition feedback, a sounding reference signal, or both to the network device in accordance with a format associated with the second number of active receivers; activating a timer based on transmitting the signaling, wherein reducing the quantity of active receivers at the UE from the first quantity of active receivers to the second quantity of active receivers is based at least in part on expiration of the timer. activating a second timer based on whether one or more second downlink grants are detected during a time duration associated with the timer, wherein reducing the quantity of active receivers at the UE is based at least in part on expiration of the timer and the second timer. The method of claim 4 comprising:

6. When a bandwidth associated with the second bandwidth portion is below a threshold, adjusting the quantity of active receivers at the UE comprises: reducing the quantity of active receivers at the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on the bandwidth associated with the second bandwidth portion being below the threshold; sending signaling to the network device based at least in part on the second quantity of active receivers prior to reducing the quantity of active receivers at the UE; The method of claim 1 , comprising:

7. Transmitting the signaling based at least in part on the second quantity of active receivers includes:

7. The method of claim 6, comprising transmitting channel condition feedback, a sounding reference signal, or both to the network device in accordance with a format associated with the second quantity of active receivers.

8. activating a timer based on transmitting the signaling, and wherein reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers is based at least in part on expiration of the timer. activating a second timer based on whether one or more second downlink grants are detected during a time duration associated with the timer, wherein reducing the quantity of active receivers at the UE is based at least in part on expiration of the timer and the second timer. The method of claim 6 further comprising:

9. Adjusting the number of active receivers at the UE may include: reducing the quantity of active receivers in the UE from a first quantity of active receivers to a second quantity of active receivers; The method comprises: Detecting one or more downlink grants from the network device to schedule communications associated with the first quantity of active receivers; increasing the quantity of active receivers from the second quantity of active receivers to the first quantity of active receivers during a period of time based at least in part on detecting the one or more downlink grants; reducing the quantity of active receivers from the first quantity of active receivers to the second quantity of active receivers after the time period; The method of claim 1 further comprising:

10. 1. A method for wireless communication in a user equipment (UE), comprising: receiving, from a network device, an activation message for a bandwidth portion of a plurality of bandwidth portions configured for the UE; monitoring one or more downlink grants while operating within the bandwidth portion, the one or more downlink grants being for receiving one or more downlink signals within the active bandwidth portion; failing to detect one or more downlink grants from the network device while operating within the bandwidth portion; and adjusting a quantity of active receivers at the UE based at least in part on whether the one or more downlink grants are detected, and adjusting the quantity of active receivers at the UE comprises reducing the quantity of active receivers at the UE from a first quantity of active receivers to a second quantity of active receivers based at least in part on failing to detect the one or more downlink grants from the network device. A method comprising:

11. sending signaling to the network device based at least in part on the second quantity of active receivers prior to reducing the quantity of active receivers at the UE; The method of claim 10 further comprising:

12. Transmitting the signaling based at least in part on the second quantity of active receivers includes:

12. The method of claim 11, comprising transmitting channel condition feedback, a sounding reference signal, or both to the network device in accordance with a format associated with the second quantity of active receivers.

13. activating a timer based on transmitting the signaling, wherein reducing the quantity of active receivers at the UE from the first quantity of active receivers to the second quantity of active receivers is based at least in part on expiration of the timer. The method of claim 11 further comprising:

14. 1. An apparatus for wireless communication, comprising: A processor in a user equipment (UE); a transceiver coupled to the processor and comprising a plurality of receivers; a memory coupled to the processor; 10. An apparatus comprising: a memory and a processor configured to cause the apparatus to perform a method according to any one of claims 1 to 9.

15. 1. An apparatus for wireless communication, comprising: A processor in a user equipment (UE); a transceiver coupled to the processor and comprising a plurality of receivers; a memory coupled to the processor; 14. An apparatus comprising: a memory and a processor configured to cause the apparatus to perform a method according to any one of claims 10 to 13.

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