COMMUNICATIONS IN POWER SAVING MODE

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a power saving mode of a base station. The UE may communicate with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a physical downlink shared channel configuration, a downlink control information configuration, a demodulation reference signal configuration, a transport block size configuration, a block error rate configuration, or a layer configuration. Numerous other aspects are provided.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and specifically, to techniques and apparatuses for communicating while in a power saving mode.

BACKGROUND

In some networks, network devices such as base stations may manage wireless communications using an unnecessary amount of power consumption. In some networks, the network devices may have power constraints that limit an amount of power resources available to the network devices to manage the wireless communications. The network devices may support changing communication parameters that are associated with different power consumption rates based at least in part on power constraints or a determination that power consumption can be reduced while managing current wireless communications, among other examples. A base station may indicate, to a UE, values of the communication parameters to apply to a subsequent communication based at least in part on a power consumption rate. However, indicating the values for the communication parameters consumes communication, computing, network, or power resources of the UE or the base station. Additionally or alternatively, dynamic signaling, such as a downlink control information message, may have limited information fields for carrying the values for the communication parameters for the subsequent communication. In this way, the base station may be unable to realize potential power saving that the base station may otherwise support.

SUMMARY

Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving an indication of a power saving mode of a base station. The method may include communicating with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a physical downlink shared channel (PDSCH) configuration that is based at least in part on the power saving mode, a downlink control information (DCI) configuration that is based at least in part on the power saving mode, a demodulation reference signal (DMRS) configuration that is based at least in part on the power saving mode, a transport block size (TBS) configuration that is based at least in part on the power saving mode, a block error rate (BLER) configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to a method of wireless communication performed by a base station. The method may include transmitting an indication of a power saving mode of the base station. The method may include communicating with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to a UE for wireless communication. The user equipment may include at least one processor and at least one memory, communicatively coupled with the at least one processor, that stores processor-readable code. The processor-readable code, when executed by the at least one processor, may be configured to cause the user equipment to receive an indication of a power saving mode of a base station. The processor-readable code, when executed by the at least one processor, may be configured to cause the user equipment to communicate with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to a base station for wireless communication. The base station may include at least one processor and at least one memory, communicatively coupled with the at least one processor, that stores processor-readable code. The processor-readable code, when executed by the at least one processor, may be configured to cause the base station to transmit an indication of a power saving mode of the base station. The processor-readable code, when executed by the at least one processor, may be configured to cause the base station to communicate with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive an indication of a power saving mode of a base station. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a base station. The set of instructions, when executed by one or more processors of the base station, may cause the base station to transmit an indication of a power saving mode of the base station. The set of instructions, when executed by one or more processors of the base station, may cause the base station to communicate with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving an indication of a power saving mode of a base station. The apparatus may include means for communicating with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for transmitting an indication of a power saving mode of the base station. The apparatus may include means for communicating with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, or processing system as substantially described with reference to and as illustrated by the drawings and specification.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and are not to be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. One skilled in the art may appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any quantity of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. Any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.

Various aspects relate generally to communicating while in a power saving mode. Some aspects more specifically relate to a base station indicating a power saving mode to a user equipment (UE), and the base station and the UE each applying communication parameters (based at least in part on the power saving mode) that are associated with a power saving configuration. The communication parameters that are based at least in part on the power saving mode may include a physical downlink shared channel (PDSCH) configuration, a downlink control information (DCI) configuration, a demodulation reference signal (DMRS) configuration, a transport block size (TBS) configuration, a block error rate (BLER) configuration, or a layer configuration, among other examples. In some aspects, the base station may transmit an indication of a set of candidate power saving modes and associated configurations, with the configurations indicating the communication parameters associated with the candidate power saving modes. In this way, an indication of the power saving mode may indicate a set of communication parameters without an explicit indication (for example, a dynamic indication) of each of the communication parameters. Similarly, an indication of a change to the power saving mode (for example, an indication of a selection of a different candidate power saving mode) may indicate a change to the set of communication parameters without an explicit indication of changes to each of the communication parameters.

Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, the described techniques can be used to conserve power resources based at least in part on the base station operating in a power saving mode, and to conserve network communication, power, or computing resources that may have otherwise been used to indicate values of the communication parameters.

FIG.1is a diagram illustrating an example of a wireless network in accordance with the present disclosure. The wireless network100may be or may include elements of a 5G (for example, NR) network or a 4G (for example, Long Term Evolution (LTE)) network, among other examples. The wireless network100may include one or more base stations110(shown as a BS110a,a BS110b,a BS110c,and a BS110d), a UE120or multiple UEs120(shown as a UE120a,a UE120b,a UE120c,a UE120d, and a UE120e), or other network entities. A base station110is an entity that communicates with UEs120. A base station110(sometimes referred to as a BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (for example, in 4G), a gNB (for example, in 5G), an access point, or a transmission reception point (TRP). Each base station110may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term “cell” can refer to a coverage area of a base station110or a base station subsystem serving this coverage area, depending on the context in which the term is used.

A base station110may provide communication coverage for a macro cell, a pico cell, a femto cell, or another type of cell. A macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by UEs120with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs120with service subscription. A femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by UEs120having association with the femto cell (for example, UEs120in a closed subscriber group (CSG)). A base station110for a macro cell may be referred to as a macro base station. A base station110for a pico cell may be referred to as a pico base station. A base station110for a femto cell may be referred to as a femto base station or an in-home base station.

The wireless network100may be a heterogeneous network that includes base stations110of different types, such as macro base stations, pico base stations, femto base stations, or relay base stations. These different types of base stations110may have different transmit power levels, different coverage areas, or different impacts on interference in the wireless network100. For example, macro base stations may have a high transmit power level (for example, 5 to 40 watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (for example, 0.1 to 2 watts). In the example shown inFIG.1, the BS110amay be a macro base station for a macro cell102a,the BS110bmay be a pico base station for a pico cell102b,and the BS110cmay be a femto base station for a femto cell102c.A base station may support one or multiple (for example, three) cells. A network controller130may couple to or communicate with a set of base stations110and may provide coordination and control for these base stations110. The network controller130may communicate with the base stations110via a backhaul communication link. The base stations110may communicate with one another directly or indirectly via a wireless or wireline backhaul communication link.

In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move in accordance with the location of a base station110that is mobile (for example, a mobile base station). In some examples, the base stations110may be interconnected to one another or to one or more other base stations110or network nodes (not shown) in the wireless network100through various types of backhaul interfaces, such as a direct physical connection or a virtual network, using any suitable transport network.

The wireless network100may include one or more relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (for example, a base station110or a UE120) and send a transmission of the data to a downstream station (for example, a UE120or a base station110). A relay station may be a UE120that can relay transmissions for other UEs120. In the example shown inFIG.1, the BS110d(for example, a relay base station) may communicate with the BS110a(for example, a macro base station) and the UE120din order to facilitate communication between the BS110aand the UE120d.A base station110that relays communications may be referred to as a relay station, a relay base station, or a relay.

The UEs120may be dispersed throughout the wireless network100, and each UE120may be stationary or mobile. A UE120may include, for example, an access terminal, a terminal, a mobile station, or a subscriber unit. A UE120may be a cellular phone (for example, a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (for example, a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (for example, a smart ring or a smart bracelet)), an entertainment device (for example, a music device, a video device, or a satellite radio), a vehicular component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless medium.

Some UEs120may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. An MTC UE or an eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, or a location tag, that may communicate with a base station, another device (for example, a remote device), or some other entity. Some UEs120may be considered Internet-of-Things (IoT) devices, or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs120may be considered a Customer Premises Equipment. A UE120may be included inside a housing that houses components of the UE120, such as processor components or memory components. In some examples, the processor components and the memory components may be coupled together. For example, the processor components (for example, one or more processors) and the memory components (for example, a memory) may be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.

In general, any quantity of wireless networks100may be deployed in a given geographic area. Each wireless network100may support a particular RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology or an air interface. A frequency may be referred to as a carrier or a frequency channel. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some examples, two or more UEs120(for example, shown as UE120aand UE120e) may communicate directly using one or more sidelink channels (for example, without using a base station110as an intermediary to communicate with one another). For example, the UEs120may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (for example, which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), or a mesh network. In such examples, a UE120may perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by the base station110.

In some aspects, the UE120may include a communication manager140. As described in more detail elsewhere herein, the communication manager140may receive an indication of a power saving mode of a base station; and communicate with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode. Additionally or alternatively, the communication manager140may perform one or more other operations described herein.

In some aspects, the base station110may include a communication manager150. As described in more detail elsewhere herein, the communication manager150may transmit an indication of a power saving mode of the base station; and communicate with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode. Additionally or alternatively, the communication manager150may perform one or more other operations described herein.

FIG.2is a diagram illustrating an example base station in communication with a UE in a wireless network in accordance with the present disclosure. The base station may correspond to the base station110ofFIG.1. Similarly, the UE may correspond to the UE120ofFIG.1. The base station110may be equipped with a set of antennas234athrough234t,such as T antennas (T≥1). The UE120may be equipped with a set of antennas252athrough252r,such as R antennas (R≥1).

At the base station110, a transmit processor220may receive data, from a data source212, intended for the UE120(or a set of UEs120). The transmit processor220may select one or more modulation and coding schemes (MCSs) for the UE120based at least in part on one or more channel quality indicators (CQIs) received from that UE120. The base station110may process (for example, encode and modulate) the data for the UE120based at least in part on the MCS(s) selected for the UE120and may provide data symbols for the UE120. The transmit processor220may process system information (for example, for semi-static resource partitioning information (SRPI)) and control information (for example, CQI requests, grants, or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor220may generate reference symbols for reference signals (for example, a cell-specific reference signal (CRS) or a DMRS) and synchronization signals (for example, a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor230may perform spatial processing (for example, precoding) on the data symbols, the control symbols, the overhead symbols, or the reference symbols, if applicable, and may provide a set of output symbol streams (for example, T output symbol streams) to a corresponding set of modems232(for example, T modems), shown as modems232athrough232t.For example, each output symbol stream may be provided to a modulator component (shown as MOD) of a modem232. Each modem232may use a respective modulator component to process a respective output symbol stream (for example, for OFDM) to obtain an output sample stream. Each modem232may further use a respective modulator component to process (for example, convert to analog, amplify, filter, or upconvert) the output sample stream to obtain a downlink signal. The modems232athrough232tmay transmit a set of downlink signals (for example, T downlink signals) via a corresponding set of antennas234(for example, T antennas), shown as antennas234athrough234t.

At the UE120, a set of antennas252(shown as antennas252athrough252r) may receive the downlink signals from the base station110or other base stations110and may provide a set of received signals (for example, R received signals) to a set of modems254(for example, R modems), shown as modems254athrough254r.For example, each received signal may be provided to a demodulator component (shown as DEMOD) of a modem254. Each modem254may use a respective demodulator component to condition (for example, filter, amplify, downconvert, or digitize) a received signal to obtain input samples. Each modem254may use a demodulator component to further process the input samples (for example, for OFDM) to obtain received symbols. A MIMO detector256may obtain received symbols from the modems254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols. A receive processor258may process (for example, demodulate and decode) the detected symbols, may provide decoded data for the UE120to a data sink260, and may provide decoded control information and system information to a controller/processor280. The term “controller/processor” may refer to one or more controllers, one or more processors, or a combination thereof. A channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, or a CQI parameter, among other examples. In some examples, one or more components of the UE120may be included in a housing.

One or more antennas (for example, antennas234athrough234tor antennas252athrough252r) may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, among other examples. An antenna panel, an antenna group, a set of antenna elements, or an antenna array may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, or one or more antenna elements coupled to one or more transmission or reception components, such as one or more components ofFIG.2.

On the uplink, at the UE120, a transmit processor264may receive and process data from a data source262and control information (for example, for reports that include RSRP, RSSI, RSRQ, or CQI) from the controller/processor280. The transmit processor264may generate reference symbols for one or more reference signals. The symbols from the transmit processor264may be precoded by a TX MIMO processor266if applicable, further processed by the modems254(for example, for DFT-s-OFDM or CP-OFDM), and transmitted to the base station110. In some examples, the modem254of the UE120may include a modulator and a demodulator. In some examples, the UE120includes a transceiver. The transceiver may include any combination of the antenna(s)252, the modem(s)254, the MIMO detector256, the receive processor258, the transmit processor264, or the TX MIMO processor266. The transceiver may be used by a processor (for example, the controller/processor280) and the memory282to perform aspects of any of the methods described herein.

The controller/processor240of the base station110, the controller/processor280of the UE120, or any other component(s) ofFIG.2may perform one or more techniques associated with communicating while in a power saving mode, as described in more detail elsewhere herein. For example, the controller/processor240of the base station110, the controller/processor280of the UE120, or any other component(s) ofFIG.2may perform or direct operations of, for example, process500ofFIG.5, process600ofFIG.6, or other processes as described herein. The memory242and the memory282may store data and program codes for the base station110and the UE120, respectively. In some examples, the memory242or the memory282may include a non-transitory computer-readable medium storing one or more instructions (for example, code or program code) for wireless communication. For example, the one or more instructions, when executed (for example, directly, or after compiling, converting, or interpreting) by one or more processors of the base station110or the UE120, may cause the one or more processors, the UE120, or the base station110to perform or direct operations of, for example, process500ofFIG.5, process600ofFIG.6, or other processes as described herein. In some examples, executing instructions may include running the instructions, converting the instructions, compiling the instructions, or interpreting the instructions, among other examples.

In some aspects, the UE includes means for receiving an indication of a power saving mode of a base station; or means for communicating with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode. The means for the UE to perform operations described herein may include, for example, one or more of communication manager140, antenna252, modem254, MIMO detector256, receive processor258, transmit processor264, TX MIMO processor266, controller/processor280, or memory282.

In some aspects, the base station includes means for transmitting an indication of a power saving mode of the base station; or means for communicating with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode. The means for the base station to perform operations described herein may include, for example, one or more of communication manager150, transmit processor220, TX MIMO processor230, modem232, antenna234, MIMO detector236, receive processor238, controller/processor240, memory242, or scheduler246.

FIG.3is a diagram illustrating an example of control channel repetitions in accordance with the present disclosure. In some networks, a base station may schedule a physical downlink control channel (PDCCH) communication or a PDSCH with repetitions to improve coverage of a transmission signal. The repetitions may be configured to carry a same message over different communication resources (for example, in time or frequency). A receiving device may combine samplings over the different communication resources to improve demodulation or decoding of the PDCCH communication or the PDSCH communication.

A UE may be configured with multiple (for example, up to 3 or up to 5) control resource sets (CORESETs) in a bandwidth part (BWP) of a serving cell (for example, a component carrier (CC)). Each CORESET may be associated with one active transmission configuration indication (TCI) state. A CORESET configuration may indicate or configure resources (for example, resource blocks) of a CORESET in a frequency domain, or a quantity of symbols of the CORESET (for example, 1, 2, or 3 OFDM symbols), among other examples. Each search space set, for a receiving device to detect a control message (for example, DCI), is associated with one CORESET.

There may be multiple search space sets (for example, up to 10) in a BWP of the serving cell. A search space configuration may be configured via radio resource control (RRC) signaling. The search space configuration may indicate an associated CORESET, periodicity and offset for monitoring slots, monitoring symbols of the monitoring slots, an indication of PDCCH monitoring occasions (MOs) of the search space set, or a search space set type (for example, a common search space (CSS) or UE-specific search space (USS), among other examples). Additionally or alternatively, the search space configuration may indicate DCI formats to monitor or a quantity of PDCCH candidates for different aggregation levels (ALs), among other examples. PDCCH candidates may be defined as part of search space set configurations. For example, a search space set configuration may define an aggregation level and a candidate index for a PDCCH candidate.

The UE monitors PDCCH candidates in search space sets, and one or more PDSCH candidates that pass a cyclic redundancy check (CRC) (successful decoding) correspond to a decoded DCI (for example, using blind decoding). The UE may receive a DCI message within one PDCCH candidate.

In some networks, each repetition of a DCI message may be associated with a PDCCH candidate and multiple (for example, two) PDCCH candidates are linked together for repetition of the DCI message.

As shown by reference number300, a link may be established between a first search space set associated with a first PDCCH candidate and a second search space set associated with a second PDCCH candidate. The first search space set and the second search space set may be scheduled within a single slot (for example, an intra-slot PDCCH repetition).

As shown by reference number300, a link may be established between a first search space set associated with a first PDCCH candidate and a second search space set associated with a second PDCCH candidate. The first search space set and the second search space set may be scheduled within a single slot (for example, an intra-slot PDCCH repetition).

As shown by reference number305, a link may be established, within a first monitoring occasion310between a first search space set associated with a first PDCCH candidate and a second search space set associated with a second PDCCH candidate. A second monitoring occasion315may also include the first search space set and the second search space set, and the search space sets may be linked (for example, for repetitions) across different slots associated with the different monitoring occasions310,315(for example, an inter-slot PDCCH repetition).

The PDCCH candidates having repetitions of the DCI message may be configured with a same aggregation level having a same number of control channel elements, and the DCI message transmitted using the PDCCH candidates has a same payload. The UE may perform soft combining to decode the DCI message based at least in part on combining samples collected during the search space sets.

The base station may indicate a linking between the PDCCH candidates using, for example, RRC signaling. The base station may indicate the linking based at least in part on providing a one-to-one mapping of the search space sets. Additionally or alternatively, PDCCH candidates with a same AL and same candidate index in linked search space sets may be indicated as being linked. For example, two linked search space sets may be configured with a same quantity of candidates for each AL. In this way, the UE knows the linking before attempting to decode the DCI message.

Repetitions of DCI messages or PDSCH messages may improve coverage for communications between the UE and the base station. However, using repetitions may consume increased power resources to transmit or receive and combine the repetitions relative to single transmission of the DCI messages or PDSCH message. Additionally or alternatively, other communication parameters may affect consumption of power resources, such as a PDSCH configuration, a DCI configuration, a DMRS configuration, a TBS configuration, a BLER configuration, or a layer configuration, among other examples. To configure the communication parameters for power saving, the base station may transmit indications of values for the communication parameters. However, indicating the values for the parameters consumes communication, computing, network, or power resources of the UE or the base station. Additionally or alternatively, dynamic signaling, such as a DCI message, may have limited information fields for carrying the values for the subsequent communication parameters. In this way, the base station may be unable to realize potential power saving that the base station may otherwise support.

Various aspects relate generally to communicating while in a power saving mode. Some aspects more specifically relate to a base station indicating a power saving mode to a UE, and the base station and the UE each applying communication parameters (based at least in part on the power saving mode) that are associated with a power saving configuration. The communication parameters that are based at least in part on the power saving mode may include a PDSCH configuration, a DCI configuration, a DMRS configuration, a TBS configuration, a BLER configuration, or a layer configuration, among other examples. In some aspects, the base station may transmit an indication of a set of candidate power saving modes and associated configurations, with the configurations indicating the communication parameters associated with the candidate power saving modes. In this way, an indication of the power saving mode may indicate a set of communication parameters without an explicit indication (for example, a dynamic indication) of each of the communication parameters. Similarly, an indication of a change to the power saving mode (for example, an indication of a selection of a different candidate power saving mode) may indicate a change to the set of communication parameters without an explicit indication of changes to each of the communication parameters.

Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, the described techniques can be used to conserve power resources based at least in part on the base station operating in a power saving mode, and to conserve network communication, power, or computing resources that may have otherwise been used to indicate values of the communication parameters.

FIG.4is a diagram illustrating an example400associated with communicating while in a power saving mode, in accordance with the present disclosure. As shown inFIG.4, a base station (for example, base station110) may communicate with a UE (for example, UE120). In some aspects, the base station and the UE may be part of a wireless network (for example, wireless network100). The UE and the base station may have established a wireless connection prior to operations shown inFIG.4.

In a first operation405, the base station may transmit, and the UE may receive, configuration information. In some aspects, the UE may receive the configuration information via one or more of RRC signaling, one or more medium access control (MAC) control elements (CEs), or DCI, among other examples. In some aspects, the configuration information may include an indication of one or more configuration parameters (for example, already known to the UE) for selection by the UE, or explicit configuration information for the UE to use to configure the UE, among other examples.

In some aspects, the configuration information may indicate that the UE is to transmit an indication of support for communicating with the base station based at least in part on communication states, such as a power saving mode of the base station. In some aspects, the configuration information may indicate that the base station is to transmit, and the UE is to receive, an indication of a set of candidate communication states and associated parameters for communicating with the base station. For example, the configuration information may indicate that the UE is to apply a configuration for a PDSCH, DCI, DMRSs, a TBS, a BLER, or layers, among other examples, based at least in part on an active power saving mode as indicated by the base station.

The UE may configure itself based at least in part on the configuration information. In some aspects, the UE may be configured to perform one or more operations described herein based at least in part on the configuration information.

In a second operation410, the UE may transmit, and the base station may receive, an indication of support for communicating with the base station based at least in part on communication states. In some aspects, the UE may transmit the indication of support before receiving a portion of the configuration information described in connection with the first operation405. For example, the UE may receive a first portion of the configuration information that indicates that the UE is to transmit the indication of support and may receive a second portion of the configuration information that indicates a configuration for communication with the base station based on the communication states or power saving modes of the base station.

In a third operation415, the UE may receive, and the base station may transmit, an indication of candidate communication states and associated parameters for communicating with the base station. In some aspects, the indication of the candidate communication states, and associated parameters may indicate, a mapping of the candidate communication states to one or more communication parameters. For example, the communication parameters may include a PDSCH configuration, a DCI configuration, a DMRS configuration, a TBS configuration, a BLER configuration, or a layer configuration, among other examples. In some aspects, the one or more communication states may be associated with one or more power saving modes of the base station. For example, each of the one or more communication states may be mapped to a power saving mode (for example, with one-to-one mapping or multiple-to-one mapping).

In some aspects, the base station may transmit, and the UE may receive, an indication to associate the candidate communication states or power saving modes with one or more parameters for communicating with the base station. For example, the UE may receive an indication to associate the one or more power saving modes with different communication parameters associated with the PDSCH configuration, the DCI configuration, the DMRS configuration, the TBS configuration, the BLER configuration, or the layer configuration, among other examples.

In some aspects, the PDSCH configuration may include communication parameters such as a repetition number for communications with the base station or a change to the repetition number for the communications with the base station, among other examples. For example, the PDSCH configuration may indicate a repetition number reduction, a maximum repetition number, or a change from a previous PDSCH configuration. Different power saving modes or communication states may be associated with different a repetition number reduction, a maximum repetition number, or a change from a previous PDSCH configuration.

In some aspects, the PDSCH configuration may include communication parameters that may be associated with different semi-persistent-scheduling (SPS)-based communication sets For example, the PDSCH configuration may indicate one or more repetition numbers for one or more SPS-based communications with the base station or cancelation of repetitions for one or more SPS-based communications with the base station, among other examples.

In some aspects, the DCI configuration is associated with ALs and CORESETs per UE, resources of CORESETs in a frequency domain, or a quantity of symbols of the CORESET (for example, 1, 2, or 3 OFDM symbols), among other examples. In some aspects, the DCI configuration may be associated with a CORESET to use to monitor for receiving a DCI message, a quantity of time-based resources of the control resource set, a quantity of frequency-based resources of the control resource set, one or more candidate ALs for receiving the DCI message, a repetition number of the DCI message, disabling or canceling of repetitions of the DCI message, or a quantity of DCI messages transmitted in a multiple transmission reception point (multi-TRP) configuration, among other examples.

In some aspects, the DMRS configuration may be associated with an energy per resource element (EPRE) for transmitting DMRSs, a power offset between transmitting the DMRSs and transmitting data, replacement of one or more DMRS symbols with data symbols, frequency-domain density of the DMRSs, or activation or deactivation of DMRS bundling, among other examples. Based at least in part on deactivating DMRS bundling, the UE may be not be required to maintain phase continuity or operating power amplifiers, which may improve coverage or power consumption. In some aspects, an EPRE for the DMRS or a power offset for DMRS may change per power saving mode. Additionally or alternatively, since DMRSs may be configured for transmission with higher power than data, by switching to lower power mode, the DMRS may be transmitted with a same power as data of the PDSCH. In some aspects, some DMRS symbols may be canceled and replaced with data. In some aspects, frequency domain density of the DMRSs may be reduced for some power saving modes.

In some aspects, the communication parameters may include a tracking reference signal (TRS) configuration that is based at least in part on the power saving mode or a phase-tracking reference signal (PTRS) configuration that is based at least in part on the power saving mode, among other examples. For example, the TRS configuration or the PTRS configuration may be associated with cancelation of TRSs, cancelation of PTRSs, a time-domain pattern of TRSs, a time-domain pattern of PTRSs, a frequency-domain pattern of TRSs, or a frequency-domain pattern of PTRSs, among other examples.

In some aspects, the UE may use a fixed TBS or a threshold TBS that is based at least in part on the power saving mode. For example, the UE may use a fixed TBS or lower a maximum TBS to a limit that changes with, or is associated with, the energy saving mode.

In some aspects, the communication parameters indicate a number of symbols in a slot for communications with the base station, a number of symbols in a sub-slot for communications with the base station, a number of resource blocks in a slot for communications with the base station, or a number of resource blocks in a sub-slot for communications with the base station. For example, the communication parameters may indicate a limit for a number of OFDM symbols or resource blocks per sub-slot or per slot.

In some aspects, the BLER configuration is associated with a target BLER that is based at least in part on the power saving mode. In some aspects, the communication parameters comprise an MCS configuration that is based at least in part on the power saving mode. The MCS configuration may be associated with one or both of MCS tables or a maximum MCS that is based at least in part on the power saving mode. For example, the UE may use different target BLERs, MCS tables, or maximum MCSs for different energy saving modes. In some aspects, the base station may not support maintaining BLERs below a threshold BLER when operating in different power saving modes.

In some aspects, the communication parameters may include a re-transmission configuration that is based at least in part on the power saving mode. The re-transmission configuration may be associated with a maximum re-transmission number that is based at least in part on the power saving mode, a maximum transmission number that is based at least in part on the power saving mode, or a redundancy version (RV) sequence length that is based at least in part on the power saving mode, among other examples. For example, the UE and the base station may use a maximum number of re-transmissions or RV sequence length associated with an active power saving mode.

In some aspects, the layer configuration is associated with a first maximum layer number that is based at least in part on the power saving mode, a second maximum layer number associated with a serving cell, the second maximum layer number being based at least in part on the power saving mode, or one or more third maximum layer numbers associated with one or more bandwidth parts with the one or more third maximum layer numbers being based at least in part on the power saving mode, among other examples. For example, the layer configuration may indicate a maximum MIMO layer indication for a serving cell or for different BWPs depending on different power saving modes.

In a fourth operation420, the base station may determine a communication state to use for communicating with the UE or additional UEs served in a cell provided by the base station. For example, the base station may determine to use a communication state associated with a power saving mode of the base station. The base station may determine to apply the power saving mode of the base station based at least in part on power constraints that limit an amount of power resources available to the base station to manage the wireless communications or a determination that power consumption can be reduced while managing current wireless communications, among other examples. In some aspects, the base station may determine the power saving mode based at least in part on a number of UEs connected with the base station, an amount of traffic handled by the base station, a type of traffic handled by the base station, channel conditions for channels between the base station and the UE, or communication channels for UEs connected with the base station, among other examples.

In a fifth operation425, the UE may receive, and the base station may transmit, an indication of a communication state for communicating with the base station. In some aspects, the indication of the communication state may include an indication of a power saving mode of the base station. In some aspects, the indication of the communication state may indicate an active communication state from a set of candidate communication states (for example, as described in connection with the third operation415). In some aspects, the UE may receive the indication of the power saving mode via an explicit indication or via an indication of a change of the power saving mode relative to another power saving mode of the base station (for example, an indication to reduce or increase power from the other power saving mode). For example, the indication of the communication state may include an update from a previously active communication state.

In some aspects, the UE may receive, in connection with or separately from the indication of the communication state, an indication of one or more component carrier power saving modes for one or more component carriers configured for communication between the UE and the base station. In some aspects, the UE may apply levels of power saving associated with the one or more component carrier power saving modes, such as a PDSCH configuration, a DCI configuration, a DMRS configuration, a TBS configuration, a BLER configuration, or a layer configuration, among other examples.

In a sixth operation430, the UE may configure itself based at least in part on the communication state. In some aspects, the UE may configure the UE further based at least in part on additional signaling from the base station. For example, the base station may transmit, in addition to the indication of the communication state, an indication of one or more of the communication parameters associated with a PDSCH configuration, a DCI configuration, a DMRS configuration, a TBS configuration, a BLER configuration, or a layer configuration, among other examples.

The UE may communicate with the base station based at least in part on the power saving mode with the communication including monitoring a CORESET, receiving a downlink communication, or transmitting an uplink communication, among other examples. The UE may use one or more communication parameters to communicate with the base station based at least in part on the power saving mode. For example, the UE and the base station may configure a PDSCH, DCI, DMRSs, a TBS, a BLER, or layers of communications, among other examples, based at least in part on the power saving mode.

In a seventh operation435, the UE may monitor for a CORESET based at least in part on the communication state. In some aspects, the UE may monitor the CORESET, including a search space set or a set of PDCCH candidates having parameters that are based at least in part on the power saving mode associated with the communication state.

In an eighth operation440, the UE may receive, and the base station may transmit, a downlink communication based at least in part on the communication state. In some aspects, the UE may receive the downlink communication based at least in part on the UE and the base station applying levels of power saving to the downlink communication.

In a ninth operation445, the UE may transmit, and the base station may receive, a downlink communication based at least in part on the communication state. In some aspects, the UE may transmit the uplink communication based at least in part on the UE and the base station applying levels of power saving to the uplink communication.

Based at least in part on the UE communication with the base station using one or more configurations associated with an active power saving mode, the UE and the base station may conserve power resources based at least in part on the base station operating in a power saving mode. Additionally or alternatively, the UE and the base station may conserve network communication, power, or computing resources that may have otherwise been used to indicate values of parameters associated with the periodic reference signals.

FIG.5is a flowchart illustrating an example process500performed, for example, by a UE in accordance with the present disclosure. Example process500is an example where the UE (for example, UE120) performs operations associated with communicating while in a power saving mode.

As shown inFIG.5, in some aspects, process500may include receiving an indication of a power saving mode of a base station (block510). For example, the UE (such as by using communication manager140or reception component702, depicted inFIG.7) may receive an indication of a power saving mode of a base station, as described above.

As further shown inFIG.5, in some aspects, process500may include communicating with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode (block520). For example, the UE (such as by using communication manager140, reception component702, or transmission component704, depicted inFIG.7) may communicate with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode, as described above.

In a first additional aspect, process500includes receiving an indication to associate, with the power saving mode of the base station, the one or more communication parameters.

In a second additional aspect, alone or in combination with the first aspect, the PDSCH configuration is associated with one or more of a repetition number for communications with the base station, a change to the repetition number for the communications with the base station, one or more repetition numbers for one or more SPS-based communications with the base station, or cancelation of repetitions for one or more SPS-based communications with the base station.

In a third additional aspect, alone or in combination with one or more of the first and second aspects, the DCI configuration is associated with one or more of a control resource set to use to monitor for receiving a DCI message, a number of time-based resources of the control resource set, a number of frequency-based resources of the control resource set, one or more candidate aggregation levels for receiving the DCI message, a repetition number of the DCI message, disabling of repetitions of the DCI message, or a number of DCI messages transmitted in a multiple transmission reception point (multi-TRP) configuration.

In a fourth additional aspect, alone or in combination with one or more of the first through third aspects, the DMRS configuration is associated with one or more of an EPRE for transmitting DMRSs, a power offset between transmitting the DMRSs and transmitting data, replacement of one or more DMRS symbols with data symbols, frequency-domain density of the DMRSs, or activation or deactivation of DMRS bundling.

In a fifth additional aspect, alone or in combination with one or more of the first through fourth aspects, the communication parameters comprise one or more of a TRS configuration that is based at least in part on the power saving mode, or a PTRS configuration that is based at least in part on the power saving mode.

In a sixth additional aspect, alone or in combination with one or more of the first through fifth aspects, one or more of the TRS configuration or the PTRS configuration are associated with one or more of cancelation of TRSs, cancelation of PTRSs, a time-domain pattern of TRSs, a time-domain pattern of PTRSs, a frequency-domain pattern of TRSs, or a frequency-domain pattern of PTRSs.

In a seventh additional aspect, alone or in combination with one or more of the first through sixth aspects, the TBS configuration is associated with one or more of a fixed TBS that is based at least in part on the power saving mode, or a threshold TBS that is based at least in part on the power saving mode.

In an eighth additional aspect, alone or in combination with one or more of the first through seventh aspects, the communication parameters indicate one or more of a number of symbols in a slot for communications with the base station, a number of symbols in a sub-slot for communications with the base station, a number of resource blocks in a slot for communications with the base station, or a number of resource blocks in a sub-slot for communications with the base station.

In a ninth additional aspect, alone or in combination with one or more of the first through eighth aspects, the BLER configuration is associated with a target BLER that is based at least in part on the power saving mode.

In a tenth additional aspect, alone or in combination with one or more of the first through ninth aspects, the communication parameters comprise an MCS configuration that is based at least in part on the power saving mode, and wherein the MCS configuration is associated with one or both of MCS tables or a maximum MCS that is based at least in part on the power saving mode.

In an eleventh additional aspect, alone or in combination with one or more of the first through tenth aspects, the communication parameters comprise a re-transmission configuration that is based at least in part on the power saving mode, and wherein the re-transmission configuration is associated with one or more of a maximum re-transmission number that is based at least in part on the power saving mode, a maximum transmission number that is based at least in part on the power saving mode, or an RV sequence length that is based at least in part on the power saving mode.

In a twelfth additional aspect, alone or in combination with one or more of the first through eleventh aspects, the layer configuration is associated with one or more of a first maximum layer number that is based at least in part on the power saving mode, a second maximum layer number associated with a serving cell, the second maximum layer number being based at least in part on the power saving mode, or one or more third maximum layer numbers associated with one or more bandwidth parts, the one or more third maximum layer numbers being based at least in part on the power saving mode.

FIG.6is a flowchart illustrating an example process600performed, for example, by a base station in accordance with the present disclosure. Example process600is an example where the base station (for example, base station110) performs operations associated with communicating while in a power saving mode.

As shown inFIG.6, in some aspects, process600may include transmitting an indication of a power saving mode of the base station (block610). For example, the base station (such as by using communication manager150or transmission component804, depicted inFIG.8) may transmit an indication of a power saving mode of the base station, as described above.

As further shown inFIG.6, in some aspects, process600may include communicating with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode (block620). For example, the base station (such as by using communication manager150, reception component802, or transmission component804, depicted inFIG.8) may communicate with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode, as described above.

In a first additional aspect, process600includes transmitting an indication to associate, with the power saving mode of the base station, the one or more communication parameters.

In a second additional aspect, alone or in combination with the first aspect, the PDSCH configuration is associated with one or more of a repetition number for communications with the base station, a change to the repetition number for the communications with the base station, one or more repetition numbers for one or more SPS-based communications with the base station, or cancelation of repetitions for one or more SPS-based communications with the base station.

In a third additional aspect, alone or in combination with one or more of the first and second aspects, the DCI configuration is associated with one or more of a control resource set to use to monitor for receiving a DCI message, a number of time-based resources of the control resource set, a number of frequency-based resources of the control resource set, one or more candidate aggregation levels for receiving the DCI message, a repetition number of the DCI message, disabling of repetitions of the DCI message, or a number of DCI messages transmitted in a multiple transmission reception point (multi-TRP) configuration.

In a fourth additional aspect, alone or in combination with one or more of the first through third aspects, the DMRS configuration is associated with one or more of an EPRE for transmitting DMRSs, a power offset between transmitting the DMRSs and transmitting data, replacement of one or more DMRS symbols with data symbols, frequency-domain density of the DMRSs, or activation or deactivation of DMRS bundling.

In a fifth additional aspect, alone or in combination with one or more of the first through fourth aspects, the communication parameters comprise one or more of a TRS configuration that is based at least in part on the power saving mode, or a PTRS configuration that is based at least in part on the power saving mode.

In a sixth additional aspect, alone or in combination with one or more of the first through fifth aspects, one or more of the TRS configuration or the PTRS configuration is associated with one or more of cancelation of TRSs, cancelation of PTRSs, a time-domain pattern of TRSs, a time-domain pattern of PTRSs, a frequency-domain pattern of TRSs, or a frequency-domain pattern of PTRSs.

In a seventh additional aspect, alone or in combination with one or more of the first through sixth aspects, the TBS configuration is associated with one or more of a fixed TBS that is based at least in part on the power saving mode, or a maximum TBS that is based at least in part on the power saving mode.

In an eighth additional aspect, alone or in combination with one or more of the first through seventh aspects, the communication parameters indicate one or more of a number of symbols in a slot for communications with the base station, a number of symbols in a sub-slot for communications with the base station, a number of resource blocks in a slot for communications with the base station, or a number of resource blocks in a sub-slot for communications with the base station.

In a ninth additional aspect, alone or in combination with one or more of the first through eighth aspects, the BLER configuration is associated with a target BLER that is based at least in part on the power saving mode.

In a tenth additional aspect, alone or in combination with one or more of the first through ninth aspects, the communication parameters comprise an MCS configuration that is based at least in part on the power saving mode, and wherein the MCS configuration is associated with one or both of MCS tables or a maximum MCS that is based at least in part on the power saving mode.

In an eleventh additional aspect, alone or in combination with one or more of the first through tenth aspects, the communication parameters comprise a re-transmission configuration that is based at least in part on the power saving mode, and wherein the re-transmission configuration is associated with one or more of a maximum re-transmission number that is based at least in part on the power saving mode, a maximum transmission number that is based at least in part on the power saving mode, or an RV sequence length that is based at least in part on the power saving mode.

In a twelfth additional aspect, alone or in combination with one or more of the first through eleventh aspects, the layer configuration is associated with one or more of a first maximum layer number that is based at least in part on the power saving mode, a second maximum layer number associated with a serving cell, the second maximum layer number being based at least in part on the power saving mode, or one or more third maximum layer numbers associated with one or more bandwidth parts, the one or more third maximum layer numbers being based at least in part on the power saving mode.

FIG.7is a diagram of an example apparatus700for wireless communication. The apparatus700may be a UE, or a UE may include the apparatus700. In some aspects, the apparatus700includes a reception component702and a transmission component704, which may be in communication with one another (for example, via one or more buses or one or more other components). As shown, the apparatus700may communicate with another apparatus706(such as a UE, a base station, or another wireless communication device) using the reception component702and the transmission component704. As further shown, the apparatus700may include a communication manager708(for example, the communication manager140). In some aspects, the communication manager708may receive or provide instructions for communicating via the reception component702or the transmission component704.

The transmission component704may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus706. In some aspects, one or more other components of the apparatus700may generate communications and may provide the generated communications to the transmission component704for transmission to the apparatus706. In some aspects, the transmission component704may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and may transmit the processed signals to the apparatus706. In some aspects, the transmission component704may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection withFIG.2. In some aspects, the transmission component704may be co-located with the reception component702in a transceiver.

The reception component702may receive an indication of a power saving mode of a base station. The reception component702or the transmission component704may communicate with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

The reception component702may receive an indication to associate, with the power saving mode of the base station, the one or more communication parameters.

The number and arrangement of components shown inFIG.7are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown inFIG.7. Furthermore, two or more components shown inFIG.7may be implemented within a single component, or a single component shown inFIG.7may be implemented as multiple, distributed components. Additionally or alternatively, a set of (one or more) components shown inFIG.7may perform one or more functions described as being performed by another set of components shown inFIG.7.

FIG.8is a diagram of an example apparatus800for wireless communication. The apparatus800may be a base station, or a base station may include the apparatus800. In some aspects, the apparatus800includes a reception component802and a transmission component804, which may be in communication with one another (for example, via one or more buses or one or more other components). As shown, the apparatus800may communicate with another apparatus806(such as a UE, a base station, or another wireless communication device) using the reception component802and the transmission component804. As further shown, the apparatus800may include a communication manager808(for example, the communication manager150). In some aspects, the communication manager808may receive or provide instructions for communicating via the reception component802or the transmission component804.

The transmission component804may transmit an indication of a power saving mode of the base station. The reception component802or the transmission component804may communicate with a UE using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of a PDSCH configuration that is based at least in part on the power saving mode, a DCI configuration that is based at least in part on the power saving mode, a DMRS configuration that is based at least in part on the power saving mode, a TBS configuration that is based at least in part on the power saving mode, a BLER configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

The transmission component804may transmit an indication to associate, with the power saving mode of the base station, the one or more communication parameters.

Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: receiving an indication of a power saving mode of a base station; and communicating with the base station using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a physical downlink shared channel (PDSCH) configuration that is based at least in part on the power saving mode, a downlink control information (DCI) configuration that is based at least in part on the power saving mode, a demodulation reference signal (DMRS) configuration that is based at least in part on the power saving mode, a transport block size (TBS) configuration that is based at least in part on the power saving mode, a block error rate (BLER) configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Aspect 2: The method of Aspect 1, further comprising: receiving an indication to associate, with the power saving mode of the base station, the one or more communication parameters.

Aspect 3: The method of any of Aspects 1 or 2, wherein the PDSCH configuration is associated with one or more of: a repetition number for communications with the base station, a change to the repetition number for the communications with the base station, one or more repetition numbers for one or more semi-persistent-scheduling (SPS)-based communications with the base station, or cancelation of repetitions for one or more SPS-based communications with the base station.

Aspect 4: The method of any of Aspects 1-3, wherein the DCI configuration is associated with one or more of: a control resource set to use to monitor for receiving a DCI message, a number of time-based resources of the control resource set, a number of frequency-based resources of the control resource set, one or more candidate aggregation levels for receiving the DCI message, a repetition number of the DCI message, disabling of repetitions of the DCI message, or a number of DCI messages transmitted in a multiple transmission reception point (multi-TRP) configuration.

Aspect 5: The method of any of Aspects 1-4, wherein the DMRS configuration is associated with one or more of: an energy per resource element (EPRE) for transmitting DMRSs, a power offset between transmitting the DMRSs and transmitting data, replacement of one or more DMRS symbols with data symbols, frequency-domain density of the DMRSs, or activation or deactivation of DMRS bundling.

Aspect 6: The method of any of Aspects 1-5, wherein the communication parameters comprise one or more of a tracking reference signal (TRS) configuration that is based at least in part on the power saving mode, or a phase-tracking reference signal (PTRS) configuration that is based at least in part on the power saving mode.

Aspect 7: The method of Aspect 6, wherein one or more of the TRS configuration or the PTRS configuration are associated with one or more of: cancelation of TRSs, cancelation of PTRSs, a time-domain pattern of TRSs, a time-domain pattern of PTRSs, a frequency-domain pattern of TRSs, or a frequency-domain pattern of PTRSs.

Aspect 8: The method of any of Aspects 1-7, wherein the TBS configuration is associated with one or more of: a fixed TBS that is based at least in part on the power saving mode, or a threshold TBS that is based at least in part on the power saving mode.

Aspect 9: The method of any of Aspects 1-8, wherein the communication parameters indicate one or more of: a number of symbols in a slot for communications with the base station, a number of symbols in a sub-slot for communications with the base station, a number of resource blocks in a slot for communications with the base station, or a number of resource blocks in a sub-slot for communications with the base station.

Aspect 10: The method of any of Aspects 1-9, wherein the BLER configuration is associated with a target BLER that is based at least in part on the power saving mode.

Aspect 11: The method of any of Aspects 1-10, wherein the communication parameters comprise a modulation and coding scheme (MCS) configuration that is based at least in part on the power saving mode, and wherein the MCS configuration is associated with one or both of MCS tables or a maximum MCS that is based at least in part on the power saving mode.

Aspect 12: The method of any of Aspects 1-11, wherein the communication parameters comprise a re-transmission configuration that is based at least in part on the power saving mode, and wherein the re-transmission configuration is associated with one or more of: a maximum re-transmission number that is based at least in part on the power saving mode, a maximum transmission number that is based at least in part on the power saving mode, or a redundancy version (RV) sequence length that is based at least in part on the power saving mode.

Aspect 13: The method of any of Aspects 1-12, wherein the layer configuration is associated with one or more of: a first maximum layer number that is based at least in part on the power saving mode, a second maximum layer number associated with a serving cell, the second maximum layer number being based at least in part on the power saving mode, or one or more third maximum layer numbers associated with one or more bandwidth parts, the one or more third maximum layer numbers being based at least in part on the power saving mode.

Aspect 14: A method of wireless communication performed by a base station, comprising: transmitting an indication of a power saving mode of the base station; and communicating with a user equipment (UE) using one or more communication parameters that are based at least in part on the power saving mode, the one or more communication parameters comprising one or more of: a physical downlink shared channel (PDSCH) configuration that is based at least in part on the power saving mode, a downlink control information (DCI) configuration that is based at least in part on the power saving mode, a demodulation reference signal (DMRS) configuration that is based at least in part on the power saving mode, a transport block size (TBS) configuration that is based at least in part on the power saving mode, a block error rate (BLER) configuration that is based at least in part on the power saving mode, or a layer configuration that is based at least in part on the power saving mode.

Aspect 15: The method of Aspect 14, further comprising: transmitting an indication to associate, with the power saving mode of the base station, the one or more communication parameters.

Aspect 16: The method of any of Aspects 14 or 15, wherein the PDSCH configuration is associated with one or more of: a repetition number for communications with the base station, a change to the repetition number for the communications with the base station, one or more repetition numbers for one or more semi-persistent-scheduling (SPS)-based communications with the base station, or cancelation of repetitions for one or more SPS-based communications with the base station.

Aspect 17: The method of any of Aspects 14-16, wherein the DCI configuration is associated with one or more of: a control resource set to use to monitor for receiving a DCI message, a number of time-based resources of the control resource set, a number of frequency-based resources of the control resource set, one or more candidate aggregation levels for receiving the DCI message, a repetition number of the DCI message, disabling of repetitions of the DCI message, or a number of DCI messages transmitted in a multiple transmission reception point (multi-TRP) configuration.

Aspect 18: The method of any of Aspects 14-17, wherein the DMRS configuration is associated with one or more of: an energy per resource element (EPRE) for transmitting DMRSs, a power offset between transmitting the DMRSs and transmitting data, replacement of one or more DMRS symbols with data symbols, frequency-domain density of the DMRSs, or activation or deactivation of DMRS bundling.

Aspect 19: The method of any of Aspects 14-18, wherein the communication parameters comprise one or more of a tracking reference signal (TRS) configuration that is based at least in part on the power saving mode, or a phase-tracking reference signal (PTRS) configuration that is based at least in part on the power saving mode.

Aspect 20: The method of Aspect 19, wherein one or more of the TRS configuration or the PTRS configuration is associated with one or more of: cancelation of TRSs, cancelation of PTRSs, a time-domain pattern of TRSs, a time-domain pattern of PTRSs, a frequency-domain pattern of TRSs, or a frequency-domain pattern of PTRSs.

Aspect 21: The method of any of Aspects 14-20, wherein the TBS configuration is associated with one or more of: a fixed TBS that is based at least in part on the power saving mode, or a maximum TBS that is based at least in part on the power saving mode.

Aspect 22: The method of any of Aspects 14-21, wherein the communication parameters indicate one or more of: a number of symbols in a slot for communications with the base station, a number of symbols in a sub-slot for communications with the base station, a number of resource blocks in a slot for communications with the base station, or a number of resource blocks in a sub-slot for communications with the base station.

Aspect 23: The method of any of Aspects 14-22, wherein the BLER configuration is associated with a target BLER that is based at least in part on the power saving mode.

Aspect 24: The method of any of Aspects 14-23, wherein the communication parameters comprise a modulation and coding scheme (MCS) configuration that is based at least in part on the power saving mode, and wherein the MCS configuration is associated with one or both of MCS tables or a maximum MCS that is based at least in part on the power saving mode.

Aspect 25: The method of any of Aspects 14-24, wherein the communication parameters comprise a re-transmission configuration that is based at least in part on the power saving mode, and wherein the re-transmission configuration is associated with one or more of: a maximum re-transmission number that is based at least in part on the power saving mode, a maximum transmission number that is based at least in part on the power saving mode, or a redundancy version (RV) sequence length that is based at least in part on the power saving mode.

Aspect 26: The method of any of Aspects 14-25, wherein the layer configuration is associated with one or more of: a first maximum layer number that is based at least in part on the power saving mode, a second maximum layer number associated with a serving cell, the second maximum layer number being based at least in part on the power saving mode, or one or more third maximum layer numbers associated with one or more bandwidth parts, the one or more third maximum layer numbers being based at least in part on the power saving mode.

As used herein, the term “component” is intended to be broadly construed as hardware or a combination of hardware and software. “Software” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. As used herein, a “processor” is implemented in hardware or a combination of hardware and software. It will be apparent that systems or methods described herein may be implemented in different forms of hardware or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems or methods is not limiting of the aspects. Thus, the operation and behavior of the systems or methods are described herein without reference to specific software code, since those skilled in the art will understand that software and hardware can be designed to implement the systems or methods based, at least in part, on the description herein.