Wake-up behavior indication for power saving

Abstract

To provide user equipment (UE) and a base station (BS) with a wake-up method that should be performed by the user equipment when a wake-up signal (WUS) is not received from the base station, while simultaneously retaining the power saving benefits associated with discontinuous reception (DRX) and discontinuous transmission (DTX) operations.SOLUTION: In a wireless communication system, a method performed by user equipment includes: receiving a default wake-up configuration associated with a discontinuous reception operation; monitoring, during a wake-up signal (WUS) occasion, for a WUS; determining whether the WUS has been received during the WUS occasion; and performing physical downlink control channel (PDCCH) monitoring based on the default wake-up configuration and whether the WUS has been received during the WUS occasion.SELECTED DRAWING: Figure 12

Description

Claim of Priority

[0001] Cross - Reference to Related Applications

[0001] This application claims the benefit and priority of U.S. Patent Application No. 16 / 947,715, filed on August 13, 2020, and U.S. Provisional Patent Application No. 62 / 888,352, filed on August 16, 2019, which are hereby incorporated by reference in their entirety for all applicable purposes as if fully set forth herein.

Technical Field

[0002]

[0002] This application relates to wireless communication systems, and more particularly, to methods (as well as related devices and systems) for handling wake - up behavior for power savings, including during discontinuous reception (DRX) operation.

Background Art

[0003] Introduction

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). A wireless multi - access communication system may include several base stations (BSs) that each simultaneously support communication for a plurality of communication devices, which may also be referred to as user equipment (UE).

[0004]

[0004] There is a desire to limit the use of device components by power for wireless communication devices related to voice, video, packet data, messaging, broadcast, and other communications and save power if possible. DRX is a technique by which a UE can enter a sleep mode for a certain period of time and an active mode for another period of time. In the sleep mode, the UE can power off some radio components or at least switch some radio components to a power state lower than the active state. Therefore, the use of DRX can provide power savings in the UE. Similarly, discontinuous transmission (DTX) is a technique that can be utilized by the UE to refrain from transmitting signals in some situations. When the UE refrains from transmitting signals using DTX, the UE can power off some radio components, switch some radio components to a power state lower than the active state, or reduce the power demand of the UE. Similar DRX and / or DTX techniques can be applied to the BS to save power and / or other system resources. Furthermore, by refraining from transmitting signals using DTX, network traffic and potential interference can be reduced. In a state where the UE and / or BS operate in DRX and DTX modes, it is necessary to ensure that the device communicates in a manner that provides the user with the expected levels of communication latency and throughput while also providing power savings and an extended battery life.

Summary of the Invention

[0005]

[0005] Below, to provide a basic understanding of the technologies to be described, some aspects of the present disclosure are summarized. This summary is not an extensive overview of all contemplated features of the present disclosure, nor does it identify the main or important elements of all aspects of the present disclosure, nor does it define the scope of any or all aspects of the present disclosure. Its sole purpose is to present, in summary form, some concepts of one or more aspects of the present disclosure as a prelude to the more detailed description to be presented later.

[0006]

[0006] Aspects of the present disclosure provide a solution for how a user equipment (UE) should perform activation when a wake-up signal (WUS) is not received from a base station (BS), while simultaneously maintaining the power saving benefits associated with discontinuous reception (DRX) and discontinuous transmission (DTX) operations. In some examples, a default activation configuration is utilized by the UE when the WUS is not received from the BS during a WUS opportunity. In this regard, the default activation configuration may cause the UE to skip PDCCH monitoring (e.g., remain in sleep mode) during the on-duration associated with the WUS opportunity. Alternatively, the default activation configuration may cause the UE to actively perform PDCCH monitoring during the on-duration associated with the WUS opportunity. The default activation configuration may be dynamically and / or semi-statically configured to select whether the UE should skip or actively perform PDCCH monitoring during the on-duration associated with the WUS opportunity.

[0007]

[0007] In one aspect of the present disclosure, a method of wireless communication includes receiving, by a user equipment (UE), a default activation configuration related to discontinuous reception (DRX) operation from a base station (BS); monitoring, by the UE, for a WUS from the BS during a wake-up signal (WUS) opportunity; determining, by the UE, whether the WUS has been received from the BS during the WUS opportunity; and performing, by the UE, physical downlink control channel (PDCCH) monitoring based on the default activation configuration and whether the WUS has been received from the BS during the WUS opportunity.

[0008]

[0008] In an additional aspect of the present disclosure, a method of wireless communication includes transmitting, by a base station (BS), a default activation configuration related to discontinuous reception (DRX) operation to a user equipment (UE); determining, by the BS, whether to transmit a wake-up signal (WUS) to the UE during a WUS opportunity based on a traffic load; and transmitting, by the BS, a physical downlink control channel (PDCCH) signal during a duration associated with the WUS opportunity.

[0009]

[0009] In a further aspect of the present disclosure, a user equipment (UE) includes a transceiver configured to receive from a base station (BS) a default activation configuration related to discontinuous reception (DRX) operation and to monitor a wake-up signal (WUS) from the BS during a WUS opportunity, and a processor communicating with the transceiver, the processor being configured to determine whether the WUS has been received from the BS during the WUS opportunity and to perform physical downlink control channel (PDCCH) monitoring based on the default activation configuration and whether the WUS has been received from the BS during the WUS opportunity.

[0010]

[0010] In a further aspect of the present disclosure, a base station includes a transceiver configured to transmit to a user equipment (UE) a default activation configuration related to discontinuous reception (DRX) operation and to transmit a physical downlink control channel (PDCCH) signal during a duration related to a wake-up signal (WUS) opportunity, and a processor communicating with the transceiver, the processor being configured to determine whether to transmit the WUS to the UE during the WUS opportunity based on a traffic load.

[0011]

[0011] In a further aspect of the present disclosure, a non-transitory computer-readable medium has recorded program code, the program code including code for causing a user equipment (UE) to receive from a base station (BS) a default activation configuration related to discontinuous reception (DRX) operation, code for causing the UE to monitor a WUS from the BS during a WUS opportunity, code for causing the UE to determine whether the WUS has been received from the BS during the WUS opportunity, and code for causing the UE to perform physical downlink control channel (PDCCH) monitoring based on the default activation configuration and whether the WUS has been received from the BS during the WUS opportunity.

[0012]

[0012] In a further aspect of the present disclosure, the non-transitory computer-readable medium has recorded program code, and the program code causes a base station (BS) to send a default activation configuration related to discontinuous reception (DRX) operation to a user equipment (UE), causes the BS to determine whether to send a wake-up signal (WUS) to the UE during a WUS opportunity based on traffic load, and causes the BS to send a physical downlink control channel (PDCCH) signal during a duration related to the WUS opportunity.

[0013]

[0013] Upon consideration of the following description of specific exemplary embodiments of the present invention in conjunction with the accompanying drawings, other aspects, features, and advantages of the present invention will become apparent to those skilled in the art. The features of the present invention may be described in relation to several of the following examples and figures, but all embodiments of the present invention can include one or more of the advantageous features described herein. In other words, one or more embodiments may be discussed as having several advantageous features, but one or more of such features may also be used in accordance with various other embodiments of the present invention discussed herein. Similarly, although exemplary embodiments may be described below as embodiments of a device, system, or method, it should be understood that such exemplary embodiments can be implemented in various devices, systems, and methods.

Brief Description of the Drawings

[0014]

Figure 1

[0014] A diagram showing a wireless communication network according to some aspects of the present disclosure.

Figure 2

[0015] A diagram showing a scheduling / transmission configuration of a wireless communication method according to some aspects of the present disclosure.

Figure 3

[0016] A diagram showing a message structure of a wireless communication method according to some aspects of the present disclosure.

Figure 4

[0017] A block diagram of a user equipment (UE) according to some aspects of the present disclosure.

Figure 5

[0018] Block diagram of an exemplary base station (BS) according to an aspect of the present disclosure.

Figure 6

[0019] Diagram showing the scheduling / transmission configuration of a wireless communication method according to some aspects of the present disclosure.

Figure 7A

[0020] Diagram showing the scheduling / transmission configuration of a wireless communication method according to some aspects of the present disclosure.

Figure 7B

[0021] Diagram showing the scheduling / transmission configuration of a wireless communication method according to some aspects of the present disclosure.

Figure 8A

[0022] Protocol diagram of a wireless communication method according to some aspects of the present disclosure.

Figure 8B

[0023] Protocol diagram of a wireless communication method according to some aspects of the present disclosure.

Figure 9

[0024] Protocol diagram of a wireless communication method according to some aspects of the present disclosure.

Figure 10

[0025] Protocol diagram of a wireless communication method according to some aspects of the present disclosure.

Figure 11

[0026] Protocol diagram of a wireless communication method according to some aspects of the present disclosure.

Figure 12

[0027] Flow diagram of a wireless communication method according to some aspects of the present disclosure.

Figure 13

[0028] Flow diagram of a wireless communication method according to some aspects of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

[0015]

[0029] The embodiments for implementing the invention described below with reference to the accompanying drawings are for explaining various configurations, and do not represent only the configurations in which the concepts described in this specification can be implemented. The detailed description includes specific details for providing a complete understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts can be implemented without these specific details. In some examples, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0016]

[0030] The present disclosure generally relates to a wireless communication system, also referred to as a wireless communication network. In various embodiments, the techniques and apparatuses can be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE (registered trademark) networks, global systems for mobile communications (GSM (registered trademark)) networks for mobile communications, fifth generation (5G) or new radio (NR) networks, and other communication networks. The terms "network" and "system" described in this specification can be used interchangeably.

[0017]

[0031] An OFDMA network may implement wireless technologies such as evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11, IEEE 802.16, IEEE 802.20, flash-OFDM, etc. UTRA, E-UTRA, and GSM are part of the Universal Mobile Telecommunications System (UMTS). In particular, Long Term Evolution (LTE) is a release of UMTS that uses E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by a group called the "3rd Generation Partnership Project" (3GPP (registered trademark)), and cdma2000 is described in documents from a group called the "3rd Generation Partnership Project 2" (3GPP2). These various wireless technologies and standards are known or developed. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration among groups of the telecommunications society aimed at defining globally applicable third generation (3G) mobile phone specifications. 3GPP Long Term Evolution (LTE) is a 3GPP project aimed at improving UMTS mobile phone specifications. 3GPP may define specifications for next-generation mobile networks, mobile systems, and mobile devices. The present disclosure relates to the development of wireless technologies from LTE, 4G, 5G, NR, and beyond, involving shared access to the wireless spectrum between networks using a set of new and different wireless access technologies or wireless air interfaces.

[0018]

[0032] In particular, a 5G network contemplates diverse deployments, diverse spectrums, and diverse services and devices that may be implemented using an OFDM-based integrated air interface. To achieve these goals, further extensions of LTE and LTE-A are considered in addition to the development of new radio technologies for 5G NR networks. 5G NR is characterized by (1) ultra-high density (e.g., about 1 million nodes / km 2) and coverage for large-scale Internet of Things (IoT) devices with ultra-low complexity (e.g., about dozens of bits per second), ultra-low energy (e.g., about battery life of over 10 years), and deep coverage with the ability to reach difficult locations, (2) strong security to protect highly confidential personal information, financial information, or classified information, ultra-high reliability (e.g., about 99.9999% reliability), ultra-low latency (e.g., about 1 ms), and mission-critical control with or without users with a wide range of mobility, (3) extremely high capacity (e.g., about 10 Tbps / km 2 ) and extended mobile broadband including extremely high data rates (e.g., multi-Gbps rates, user experience rates of 100 Mbps or more), and deep awareness for advanced discovery and optimization, and is scalable to provide.

[0019]

[0033] 5G NR has a common flexible framework with scalable numerology and transmission time intervals (TTIs) to efficiently multiplex services and features with a dynamic low-latency time-division duplexing (TDD) / frequency-division duplexing (FDD) design, and can be implemented to use an optimized OFDM-based waveform with advanced wireless technologies such as massive multiple-input multiple-output (MIMO), robust millimeter-wave (mmWave) transmission, advanced channel coding, and device-centric mobility. The scalability of numerology in 5G NR with subcarrier spacing scaling can efficiently handle operating various services across diverse spectrums and diverse deployments. For example, in various outdoor and macro coverage deployments of FDD / TDD implementations below 3 GHz, the subcarrier spacing can occur at 15 kHz over bandwidths (BW) such as 5, 10, 20 MHz, etc. In various other outdoor and small cell coverage deployments of TDD above 3 GHz, the subcarrier spacing can occur at 30 kHz over an 80 / 100 MHz BW. In various other indoor broadband implementations using TDD on the unlicensed portion of the 5 GHz band, the subcarrier spacing can occur at 60 kHz over a 160 MHz BW. Finally, in various deployments transmitting using mmWave components in 28 GHz TDD, the subcarrier spacing can occur at 120 kHz over a 500 MHz BW.

[0020]

[0034] The scalable numerology of 5G NR enables scalable TTIs for diverse latency and Quality of Service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, and longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of long TTIs and short TTIs enables transmissions to start on symbol boundaries. 5G NR also contemplates a self-contained integrated subframe design with uplink / downlink scheduling information, data, and acknowledgments within the same subframe. The self-contained integrated subframe supports communication in adaptive uplink / downlink that can be flexibly configured per cell to switch dynamically between uplink and downlink for unlicensed or contention-based shared spectrum and to meet current traffic needs.

[0021]

[0035] Various other aspects and features of the present disclosure are further described below. It will be apparent that the teachings herein can be implemented in a variety of forms and that the specific structures, functions, or both disclosed herein are merely representative and not limiting. Based on the teachings herein, those skilled in the art should understand that the aspects disclosed herein can be implemented independently of other aspects, and that two or more of these aspects can be combined in various ways. For example, an apparatus can be implemented using any number of the aspects described herein, or a method can be practiced. Further, an apparatus can be implemented or a method can be practiced using, in addition to or instead of one or more of the aspects described herein, other structures, functions, or structures and functions. For example, a method can be implemented as part of a system, device, apparatus, and / or as instructions stored on a computer-readable medium for execution on a processor or computer. Further, one aspect can comprise at least one element of one claim.

[0022]

[0036] In a wireless communication network, DRX is a technique by which a UE can enter a sleep mode for a certain time period and enter an active mode for another time period. During the active period, the UE can monitor the PDCCH from the serving BS and decode the PDCCH received from the BS. During the sleep period, the UE may not monitor the PDCCH. The sleep mode enables the UE to power off some radio components or at least switch some radio components to a lower power state than the active state. Therefore, the use of DRX can provide power savings in the UE. Similarly, discontinuous transmission (DTX) is a technique that can be utilized by a BS to refrain from transmitting signals in some situations. When the BS refrains from transmitting signals using DTX, the BS can power off some radio components, switch some radio components to a lower power state than the active state, or reduce the power demand of the BS. Further, by refraining from transmitting signals using DTX, network traffic and potential interference can be reduced.

[0023]

[0037] The present disclosure provides a method, system, and device for instructing how a user equipment (UE) should perform activation when a wake-up signal (WUS) is not received from a base station (BS) while simultaneously maintaining the benefits of power savings associated with DRX and DTX operations. In some examples, a default activation configuration is utilized by the UE when the WUS is not received from the BS during a WUS opportunity. In this regard, the default activation configuration can cause the UE to skip PDCCH monitoring (e.g., remain in the sleep mode) during the on-duration associated with the WUS opportunity. Alternatively, the default activation configuration can cause the UE to actively perform PDCCH monitoring during the on-duration associated with the WUS opportunity. The default activation configuration can be dynamically and / or semi-statically configured to select whether the UE should skip or actively perform PDCCH monitoring during the on-duration associated with the WUS opportunity.

[0024]

[0038] These and other aspects of the present disclosure can provide several benefits. For example, the amount of time that a UE can spend in a sleep mode as part of DRX operation, including connected mode DRX (C-DRX), can be increased to reduce power consumption and increase battery life. In this regard, keeping the UE in a sleep state instead of unnecessarily monitoring the PDCCH facilitates powering off or shutting down one or more components of the UE associated with receiving, decoding, and / or processing the PDCCH signal. Similarly, the amount of time that a BS can refrain from transmitting signals as part of DTX operation can be increased to reduce the BS's power consumption, reduce network traffic, conserve system resources, and reduce potential interference. Additional features and benefits of the present disclosure are described in the following description.

[0025]

[0039] FIG. 1 shows a wireless communication network 100 according to some embodiments of the present disclosure. Network 100 can be a 5G network. Network 100 includes several base stations (BSs) 105 (individually labeled 105a, 105b, 105c, 105d, 105e, and 105f) and other network entities. BS 105 can be a station that communicates with UE 115 and may also be referred to as an evolved Node B (eNB), a next-generation eNB (gNB), an access point, etc. Each BS 105 can provide communication coverage to a specific geographic area. In 3GPP, the term “cell” can refer to this specific geographic coverage area of BS 105 and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0026]

[0040] BS105 can provide communication coverage to small cells such as macro cells, or pico cells or femto cells, and / or other types of cells. Macro cells generally cover a relatively large geographical area (e.g., several kilometers in radius) and can enable unrestricted access by UEs subscribed to the network provider's service. Small cells such as pico cells generally cover a relatively small geographical area and can enable unrestricted access by UEs subscribed to the network provider's service. Also, small cells such as femto cells generally cover a relatively small geographical area (e.g., a home) and can enable restricted access by UEs associated with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG), UEs for users within the home, etc.) in addition to unrestricted access. The BS for a macro cell may sometimes be called a macro BS. The BS for a small cell may sometimes be called a small cell BS, pico BS, femto BS, or home BS. In the example shown in FIG. 1, BS105d and 105e are normal macro BSs, while BS105a - 105c can be macro BSs capable of one of 3 - Dimensional (3D) MIMO, Full - Dimensional (FD) MIMO, or massive MIMO. BS105a - 105c can utilize their higher - dimensional MIMO capabilities to employ 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity. BS105f can be a small cell BS that can be a home node or a portable access point. BS105 can support one or more (e.g., two, three, four, etc.) cells.

[0027]

[0041] Network 100 can support synchronous operation or asynchronous operation. In the case of synchronous operation, the BSs can have similar frame timings and transmissions from different BSs can be approximately time - aligned. In the case of asynchronous operation, the BSs can have different frame timings and transmissions from different BSs may not be time - aligned.

[0028]

[0042] UEs 115 are distributed throughout wireless network 100, and each UE can be fixed or mobile. UEs 115 may also be referred to as terminals, mobile stations, subscriber units, stations, etc. UEs 115 can be cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, tablet computers, laptop computers, cordless phones, wireless local loop (WLL) stations, etc. In one aspect, UE 115 can be a device that includes a universal integrated circuit card (UICC). In another aspect, the UE can be a device that does not include a UICC. In some aspects, UEs 115 that do not include a UICC may also be referred to as Internet of Things (IoT) devices or all Internet of Everything (IoE) devices. UEs 115a - 115d are examples of mobile smartphone - type devices that access network 100. UEs 115 can also be machines specially configured for connected communications including machine - type communication (MTC), enhanced MTC (eMTC), narrowband IoT (NB - IoT), etc. UEs 115e - 115k are examples of various machines configured for communication that access network 100. UEs 115 can communicate with any type of BS, regardless of whether it is a macro BS, small cell, etc. In FIG. 1, a lightning bolt (e.g., a communication link) indicates a wireless transmission between a UE 115 and a serving BS 105, which is the BS designated to serve that UE 115, on the downlink and / or uplink, or a desired transmission between BSs, and a backhaul transmission between BSs.

[0029]

[0043] During operation, BS105a - 105c can serve UE115a and 115b using 3D beamforming and cooperative spatial techniques such as coordinated multipoint (CoMP) or multi - connectivity. Macro BS105d can perform backhaul communication with BS105a - 105c and small cell BS105f. Macro BS105d can also be subscribed to by UE115c and 115d and transmit multicast services received by UE115c and 115d. Such multicast services can include mobile television or streamed video, or other services for providing community information such as weather emergencies or alerts such as amber alerts or gray alerts.

[0030]

[0044] BS105 can also communicate with the core network. The core network can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. (For example, it can be an example of a gNB or access node controller (ANC)) At least some of BS105 can interface with the core network through a backhaul link (e.g., NG - C, NG - U, etc.) and perform radio configuration and scheduling for communication with UE115. In various examples, BS105 can communicate directly or indirectly with each other (e.g., through the core network) via a backhaul link (e.g., X1, X2, etc.) which can be a wired or wireless communication link.

[0031]

[0045] Network 100 can also support mission-critical communications using ultra-high reliability and redundant links for mission-critical devices such as UE115e which can be a drone. The redundant communication links with UE115e can include links from macro BSs 105d and 105e, as well as a link from small cell BS 105f. Other machine type devices such as UE115f (e.g., a thermometer), UE115g (e.g., a smart meter), and UE115h (e.g., a wearable device) can communicate through Network 100 either directly with BSs such as small cell BS 105f and macro BS 105e, or in a multi-hop configuration where, for example, UE115f communicates temperature measurement information to smart meter UE115g which then reports it to the network through small cell BS 105f. Network 100 can also provide additional network efficiency through dynamic low latency TDD / FDD communications such as in vehicle-to-vehicle (V2V).

[0046] In some implementations, Network 100 utilizes an OFDM-based waveform for communication. An OFDM-based system can divide the system BW into multiple (K) orthogonal subcarriers, also commonly referred to as subcarriers, tones, bins, etc. Each subcarrier can be modulated with data. In some examples, the subcarrier spacing between adjacent subcarriers can be fixed and the total number of subcarriers (K) can depend on the system BW. The system BW can also be divided into sub-bands. In other examples, the subcarrier spacing and / or the duration of the TTI can be scalable.

[0032]

[0047] In one embodiment, BS105 can allocate or schedule transmission resources (e.g., in the form of time-frequency resource blocks (RBs)) for downlink (DL) and uplink (UL) transmissions within network 100. DL refers to the transmission direction from BS105 to UE115, while UL refers to the transmission direction from UE115 to BS105. The communication can be in the form of radio frames. The radio frames can be divided into a plurality, for example, about 10 subframes or slots. Each slot can be further divided into minislots. In FDD mode, simultaneous UL and DL transmissions can be performed in different frequency bands. For example, each subframe can include a UL subframe within the UL frequency band and a DL subframe within the DL frequency band. In TDD mode, UL and DL transmissions are performed in different time periods using the same frequency band. For example, a subset of subframes (e.g., DL subframes) within a radio frame can be used for DL transmission, and another subset of subframes (e.g., UL subframes) within the radio frame can be used for UL transmission.

[0033]

[0048] The DL subframe and the UL subframe can be divided into several regions. For example, each DL or UL subframe may have pre-defined regions for the transmission of reference signals, control information, and data. The reference signal is a predetermined signal that facilitates communication between the BS105 and the UE115. For example, the reference signal may have a specific pilot pattern or structure, and the pilot tones may spread across the operating BW or frequency band and are arranged at pre-defined times and pre-defined frequencies respectively. For example, the BS105 may transmit a cell-specific reference signal (CRS) and / or a channel state information reference signal (CSI-RS) to enable the UE115 to estimate the DL channel. Similarly, the UE115 may transmit a sounding reference signal (SRS) to enable the BS105 to estimate the UL channel. The control information may include resource allocation and protocol control. The data may include protocol data and / or operation data. In some embodiments, the BS105 and the UE115 may communicate using a self-contained subframe. The self-contained type may include a portion for DL communication and a portion for UL communication. The self-contained subframe may be DL-centered or UL-centered. The DL-centered subframe may include a longer duration for DL communication than for UL communication. The UL-centered subframe may include a longer duration for UL communication than for UL communication.

[0034]

[0049] In one embodiment, network 100 may be an NR network deployed over an authorized spectrum. BS105 can transmit synchronization signals (e.g., including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS)) in network 100 to facilitate synchronization. BS105 can broadcast system information related to network 100 (e.g., including a master information block (MIB), remaining system information (RMSI), and other system information (OSI)) to facilitate initial network access. In some examples, BS105 may broadcast the PSS, SSS, and / or MIB in the form of a synchronization signal block (SSB) via a physical broadcast channel (PBCH), and may broadcast the RMSI and / or OSI via a physical downlink shared channel (PDSCH).

[0035]

[0050] In one embodiment, a UE115 attempting to access network 100 may perform an initial cell search by detecting the PSS from BS105. The PSS may enable period timing synchronization and may indicate a physical layer identification value. UE115 may then receive the SSS. The SSS may enable radio frame synchronization and may provide a cell identification value that can be combined with the physical layer identification value for identifying the cell. The PSS and the SSS may be located in the central portion of the carrier or at any suitable frequency within the carrier.

[0036]

[0051] After receiving the PSS and SSS, the UE 115 may receive the MIB. The MIB may include system information for initial network access and scheduling information for RMSI and / or OSI. After decoding the MIB, the UE 115 may receive the RMSI and / or OSI. The RMSI and / or OSI may include radio resource control (RRC) information related to the random access channel (RACH) procedure, paging, a control resource set (CORESET) for physical downlink control channel (PDCCH) monitoring, a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), power control, and SRS.

[0037]

[0052] After obtaining the MIB, RMSI, and / or OSI, the UE 115 can perform a random access procedure to establish a connection with the BS 105. In some examples, the random access procedure can be a four-step random access procedure. For example, the UE 115 can transmit a random access preamble, and the BS 105 can respond with a random access response. The random access response (RAR) can include a detected random access preamble identifier (ID) corresponding to the random access preamble, timing advance (TA) information, UL grant, a temporary cell radio network temporary identifier (C-RNTI), and / or a backoff indicator. Upon receiving the random access response, the UE 115 can transmit a connection request to the BS 105, and the BS 105 can respond with a connection response. The connection response can indicate contention resolution. In some examples, the random access preamble, RAR, connection request, and connection response may be referred to as Message 1 (MSG1), Message 2 (MSG2), Message 3 (MSG3), and Message 4 (MSG4), respectively. In some examples, the random access procedure can be a two-step random access procedure, where the UE 115 can transmit a random access preamble and a connection request in a single transmission, and the BS 105 can respond by transmitting a random access response and a connection response in a single transmission. The combined random access preamble and connection request in the two-step random access procedure may be referred to as Message A (MSG A). The combined random access response and connection response in the two-step random access procedure may be referred to as Message B (MSG B).

[0038]

[0053] After establishing the connection, UE 115 may initiate an initial network connection procedure with network 100. When UE 115 does not have active data communication with BS 105 after the network connection, UE 115 may return to the idle state (e.g., RRC idle mode). Alternatively, UE 115 and BS 105 may enter an operating state or an active state in which operation data can be exchanged (e.g., RRC connected mode). For example, BS 105 may schedule UE 115 for UL and / or DL communication. BS 105 may send UL and / or DL scheduling grants to UE 115 via PDCCH. BS 105 may send DL communication signals to UE 115 via PDSCH according to the DL scheduling grant. UE 115 may send UL communication signals to BS 105 via PUSCH and / or PUCCH according to the UL scheduling grant. In some embodiments, BS 105 and UE 115 may adopt a hybrid automatic repeat request (HARQ) technique for communication to improve reliability. Further, UE 115 and / or BS 105 may utilize discontinuous reception (DRX), including connected mode DRX (C-DRX) and / or DTX operation modes (e.g., during RRC connected mode) as described in more detail below (e.g., during RRC idle mode).

[0039]

[0054] In one embodiment, network 100 may operate on system BW or component carrier (CC) BW. Network 100 may divide system BW into a plurality of BWPs (e.g., parts). BS105 may dynamically allocate UE115 to operate on a certain BWP (e.g., a certain part of system BW). The allocated BWP may be referred to as the active BWP. UE115 may monitor the active BWP for signaling information from BS105. BS105 may schedule UE115 for UL or DL communication in the active BWP. In some examples, BS105 may allocate a pair of BWPs within the CC to UE115 for UL and DL communication. For example, the BWP pair may include one BWP for UL communication and one BWP for DL communication. In some examples, BS105 may dynamically switch UE115 from one BWP to another, e.g., from a wideband BWP to a narrowband BWP for power saving, or from a narrowband BWP to a wideband BWP for communication.

[0040]

[0055] BS105 may further configure UE115 using one or more CORESETs in the BWP. The CORESET may include a set of frequency resources over several symbols in time. BS105 may configure UE115 using one or more search spaces for PDCCH monitoring based on the CORESET. UE115 may perform blind decoding in the search space to search for DL control information from the BS. BS105 may configure UE115 using various different CORSETs and / or search spaces for different types of PDCCH monitoring (e.g., DL / UL scheduling and / or activation information). In one example, BS105 may configure UE115 using the BWP, CORESET, and / or PDCCH search space via RRC configuration.

[0041]

[0056] In one embodiment, BS105 may establish an RRC connection with UE115 in a primary cell (PCell) (e.g., via a primary frequency carrier), and then configure UE115 to communicate via a secondary cell (SCell) (e.g., via a secondary frequency carrier). In one embodiment, BS105 may trigger UE115 to report channel information based on a channel state information reference signal (CSI-RS) transmitted by BS105. In some examples, the trigger may be aperiodic, which may be referred to as an aperiodic CSI-RS (A-CSI-RS) trigger.

[0042]

[0057] Network 100 may operate on a shared frequency band or an unlicensed frequency band at a higher frequency, for example, in the approximately 3.5 gigahertz (GHz), sub-6 GHz, or mmWave bands. Network 100 may divide the frequency band into a plurality of channels, each occupying, for example, approximately 20 megahertz (MHz). BS105 and UE115 may be operated by operating entities that share resources in a shared communication medium and may obtain a channel occupancy time (COT) in the shared medium for communication. The COT may be discontinuous in time and may refer to the amount of time that a wireless node can send a frame when it wins a contention for the wireless medium. Each COT may include a plurality of transmission slots. The COT may also be referred to as a transmission opportunity (TXOP).

[0043]

[0058] Figure 2 shows a scheduling / transmission configuration 200 of a wireless communication method according to some aspects of the present disclosure. As shown, Figure 2 shows a UE operating in DRX mode and / or C-DRX mode according to the present disclosure. The DRX mode and / or C-DRX mode may have a duty cycle with an active / on period or an inactive / sleep period. At 210, the UE is in a sleep state. At a wake-up signal (WUS) opportunity 220, a WUS 222 is transmitted by the BS. The UE can monitor the WUS 222 during the WUS opportunity 220. A set of search spaces defining a WUS monitoring opportunity including the WUS opportunity 220 may be configured. The set of search spaces may be dedicated as a wake-up search space set. In some examples, the wake-up search space set is dedicated to a particular group of UEs (e.g., based on BWP, carrier, geographical location, priority, service, subscription, etc.). In other examples, the wake-up search space is shared across multiple groups of UEs. In some examples, the UE monitors the WUS based on a WUS configuration received from the network and / or the BS. In this regard, the WUS configuration can indicate to the UE resources related to the WUS opportunity, WUS format, etc. (e.g., search spaces including time and frequency resources, period, channel, BWP, frequency carrier, etc.).

[0044]

[0059] An offset 230 follows the WUS opportunity 220, and the UE can return to the sleep state. The offset 230 separates the WUS opportunity 220 from the on-duration 240. The on-duration 240 is associated with the WUS opportunity 220. In the illustrated example, a single on-duration 240 is shown. However, it should be understood that multiple on-durations (e.g., two, three, four, five, six, etc.) can be associated with a WUS opportunity. During the on-duration 240, the UE is in the active state and can monitor PDCCH or other signals from the BS and / or transmit UL data to the BS as indicated by the UL / DL communication block 242. In this regard, in some examples, the UE performs PDCCH monitoring during the on-duration 240 based on information received during WUS 222. For example, WUS 222 can instruct the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) activation.

[0045]

[0060] As shown in FIG. 2, this same process repeats for a UE in the sleep state 250, followed by another WUS opportunity 260 where WUS 262 is transmitted. The offset 270 separates the WUS opportunity 260 from the associated on-duration 280 during which DL / UL communication 282 takes place.

[0046]

[0061] Figure 3 shows a message structure 300 according to some aspects of the present disclosure. The message structure 300 may be used, in some examples, for the WUS 222 or 262 of FIG. 2. In this regard, the message structure 300 is suitable for providing activation downlink control information (DCI) to a UE or a group of UEs. In this regard, the activation DCI may be provided for each UE or for each group of UEs. In some examples, UEs are grouped based on BWP, carrier, geographical location, priority, service, subscription, and / or other factors. In some examples, the activation DCI is sent together with a cyclic redundancy check (CRC) scrambled by an identifier associated with the UE (e.g., C-RNTI) or an identifier associated with the group of UEs (e.g., a power saving radio network temporary identifier (PS-RNTI)). In this regard, UEs in the same group are configured with a common identifier (e.g., PS-RNTI) and may utilize the same set of search spaces for the activation DCI.

[0047]

[0062] As shown in FIG. 3, the message structure 300 includes a wake-up indicator and wake-up field information for each UE or group of UEs. More specifically, in the illustrated example, a message structure is shown having a wake-up indicator 310 and wake-up field information 312 for UE1, a wake-up indicator 320 and wake-up field information 322 for UE2, and a wake-up indicator 330 and wake-up field information 332 for UE3. In this regard, the wake-up indicators 310, 320, 330 can indicate to the associated UE or group of UEs whether they should remain in the sleep state or enter the active state during one or more on durations associated with the WUS opportunity in which the wake-up DCI is transmitted. For example, a value of 1 in the wake-up indicator field can indicate that the UE should wake up and monitor during the next on duration, while a value of 0 in the wake-up indicator field can indicate that the UE should skip the next on duration and remain in the sleep state. The wake-up field information 312, 322, 332 can indicate to the associated UE or group of UEs the details of how the UE should perform PDCCH monitoring during the associated on duration if it is to enter the active state (e.g., when the wake-up indicator is 1). For example, the wake-up field information 312, 322, 332 can instruct the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) wake-up. Further, the wake-up field information 312, 322, 332 can include PDCCH monitoring parameters such as the PDCCH monitoring duration, PDCCH monitoring period, and some candidates for PDCCH blind decoding for PDCCH monitoring during the wake-up on duration associated with the corresponding WUS.The message structure 330 shown in FIG. 3 interleaves the activation information fields 312, 322, 332 into the activation indicators 310, 320, 330 based on the UE (or UE group) to form pairs. However, it should be understood that any suitable message structure or configuration can be used, including having all of the activation indicators 310, 320, 330 before all of the activation information fields 312, 322, 332, including all of the activation information fields 312, 322, 332 before all of the activation indicators 310, 320, 330, and interleaving the activation indicators 310, 320, 330 with the activation information fields 312, 322, 332 of the activation information fields that precede them.

[0048]

[0063] Each of the activation indicators 310, 320, 330 and the activation information fields 312, 322, 332 can have any suitable bit length. In some examples, each of the activation indicators 310, 320, 330 can have a bit length of 1. When network traffic is low or sparse, the activation indicators 310, 320, 330 can have a bit value of 0 most of the time. Conversely, when network traffic is high or dense, the activation indicators 310, 320, 330 can have a bit value of 1 most of the time.

[0049]

[0064] FIG. 4 is a block diagram of an exemplary UE 400 according to an aspect of the present disclosure. The UE 400 can be the UE 115 described above in FIG. 1. As shown, the UE 400 can include a processor 402, a memory 404, a WUS processing and control module 408, a transceiver 410 including a modem subsystem 412 and a radio frequency (RF) unit 414, and one or more antennas 416. These elements can communicate directly or indirectly with each other, for example, via one or more buses.

[0050]

[0065] Processor 402 can include a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein. Processor 402 can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors and DSP cores, or any other such configuration.

[0051]

[0066] Memory 404 may include a cache memory (e.g., the cache memory of processor 402), random access memory (RAM), magnetoresistive RAM (MRAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM (registered trademark)), flash memory, solid-state memory devices, hard disk drives, other forms of volatile and non-volatile memory, or combinations of different types of memory. In one embodiment, memory 404 includes a non-transitory computer-readable medium. Memory 404 may store or record instructions 406. Instructions 406, when executed by processor 402, may include instructions that cause processor 402 to perform the operations described herein with reference to UE 115 with respect to aspects of the present disclosure, such as the aspects of FIGS. 2, 3, 6-12. Instructions 406 may also be referred to as program code. Program code may be for causing one or more processors (such as processor 402) to cause a wireless communication device (or a particular component of a wireless communication device) to perform these operations by controlling or instructing the wireless communication device (or a particular component of a wireless communication device) to do so. The terms "instructions" and "code" should be construed broadly to include any type of computer-readable statement. For example, the terms "instructions" and "code" may refer to one or more programs, routines, subroutines, functions, procedures, etc. "Instructions" and "code" may include a single computer-readable statement or many computer-readable statements.

[0052]

[0067] The WUS processing and control module 408 can be implemented via hardware, software, or a combination thereof. For example, the WUS processing and control module 408 can be implemented as instructions 406 stored in the processor, circuitry, and / or memory 404 and executed by the processor 402. In some examples, the WUS processing and control module 408 can be integrated within the modem subsystem 412. For example, the WUS processing and control module 408 can be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the modem subsystem 412.

[0053]

[0068] The WUS processing and control module 408 can be used for various aspects of the present disclosure, such as the aspects of FIGS. 2, 3, and 6 - 12. The WUS processing and control module 408 is configured to communicate with other components of the UE 400 to receive a default activation configuration related to discontinuous reception (DRX) operation (e.g., for idle mode or connected mode), monitor for a wake - up signal (WUS) from the BS during a WUS opportunity, determine whether the WUS was received from the BS during the WUS opportunity, perform PDCCH monitoring, receive a WUS (including the WUS configuration) during the WUS opportunity, operate using one or more activation configurations, start a timer, determine whether the timer has expired, cancel the timer, determine whether a condition has occurred or been met, and / or perform other functions related to the UE activation procedures described in the present disclosure.

[0054]

[0069] As shown in the figure, the transceiver 410 may include a modem subsystem 412 and an RF unit 414. The transceiver 410 may be configured to communicate bidirectionally with other devices such as the BS 105. The modem subsystem 412 may be configured to modulate and / or encode data from the memory 404 and / or the WUS processing and control module 408 according to a modulation and coding scheme (MCS) (e.g., a low-density parity-check (LDPC) coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.). The RF unit 414 may be configured to process (e.g., perform analog-to-digital conversion or digital-to-analog conversion) the modulation / coded data from the modem subsystem 412 (e.g., UL control information, UL data) during outbound transmission, or the modulation / coded data of a transmission originated from another source such as the UE 115 or the BS 105 (e.g., UL control information, UL data). The RF unit 414 may be further configured to perform analog beamforming together with digital beamforming. Although shown to be integrated together within the transceiver 410, the modem subsystem 412 and the RF unit 414 may be separate devices that are coupled to each other in the UE 115 to enable the UE 115 to communicate with other devices.

[0055]

[0070] The RF unit 414 may provide modulated and / or processed data (e.g., data packets or, more generally, data messages that may include one or more data packets and other information) to the antenna 416 for transmission to one or more other devices. The antenna 416 may further receive data messages transmitted from other devices. The antenna 416 may provide the received data messages for processing and / or demodulation at the transceiver 410. The transceiver 410 may provide demodulated and decoded data (e.g., default startup configuration, WUS, PDCCH signal, radio resource control (RRC) signal, media access control (MAC) control element (CE) signal, DL / UL scheduling grant, DL data, etc.) to the WUS processing and control module 408 for processing. The antenna 416 may include a plurality of antennas of the same or different designs to maintain a plurality of transmission links. The RF unit 414 may constitute the antenna 416. The RF unit 414 and / or the transceiver 410 may include components and / or circuits that can be dynamically powered on and / or off for power saving. Additionally or alternatively, the RF unit 414 and / or the transceiver 410 may include components and / or circuits having a plurality of power states configured to transition from one power state (e.g., a higher power state) to another power state (e.g., a lower power state) for power saving.

[0056]

[0071] In one embodiment, the UE 400 may include a plurality of transceivers 410 implementing different RATs (e.g., NR and LTE). In one embodiment, the UE 400 may include a single transceiver 410 implementing a plurality of RATs (e.g., NR and LTE). In one embodiment, the transceiver 410 may include various components, where different combinations of the components may implement different RATs.

[0057]

[0072] FIG. 5 is a block diagram of an exemplary BS500 according to an aspect of the present disclosure. BS500 may be the BS105 described above in FIG. 1. As shown, BS500 may include a processor 502, a memory 504, a WUS processing and control module 508, a transceiver 510 including a modem subsystem 512 and an RF unit 514, and one or more antennas 516. These elements may communicate directly or indirectly with each other, for example, via one or more buses.

[0058]

[0073] Processor 502 may have various characteristics as a particular type of processor. For example, these may include a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein. Processor 502 may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors and a DSP core, or any other such configuration.

[0059]

[0074] Memory 504 may include cache memory (e.g., cache memory of processor 502), RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, solid state memory devices, one or more hard disk drives, memory cell-based arrays, other forms of volatile and non-volatile memory, or a combination of different types of memory. In some examples, memory 504 may include a non-transitory computer-readable medium. Memory 504 may store instructions 506. Instructions 506, when executed by processor 502, may include instructions that cause processor 502 to perform the operations described herein, such as the aspects of FIGS. 2, 3, 6-11, and 13. Instructions 506 may sometimes be referred to as code, and as discussed above in connection with FIG. 4, code may be broadly interpreted to include any type of computer-readable statement.

[0060]

[0075] The WUS processing and control module 508 can be implemented via hardware, software, or a combination thereof. For example, the WUS processing and control module 508 can be implemented as instructions 506 stored in the processor, circuit, and / or memory 504 and executed by the processor 502. In some examples, the WUS processing and control module 508 can be integrated within the modem subsystem 512. For example, the WUS processing and control module 508 can be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuits) within the modem subsystem 512.

[0061]

[0076] The WUS processing and control module 508 can be used for various aspects of the present disclosure, such as the aspects of FIGS. 2, 3, 6-11, and 13. The WUS processing and control module 508 is configured to transmit a default activation configuration related to discontinuous reception (DRX) operation, determine whether to transmit WUS during a WUS opportunity based on traffic load, transmit a physical downlink control channel (PDCCH) signal during a duration related to the WUS opportunity, transmit WUS during the WUS opportunity, and / or perform other functions of the BS related to the activation procedures described in the present disclosure.

[0062]

[0077] As shown in the figure, the transceiver 510 may include a modem subsystem 512 and an RF unit 514. The transceiver 510 may be configured to communicate bidirectionally with other devices such as UE115 and / or 400 and / or another core network element. The modem subsystem 512 may be configured to modulate and / or encode data according to an MCS (such as an LDPC coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.). The RF unit 514 processes (such as performing analog-to-digital conversion or digital-to-analog conversion) the modulated / encoded data from the modem subsystem 512 (such as during outbound transmission) (such as default startup configuration, WUS, PDCCH signal, RRC signal, MAC CE signal, etc.), or the modulated / encoded data of a transmission originated from another source such as UE115 or 400 (such as default startup configuration, WUS, PDCCH signal, RRC signal, MAC CE signal, etc.). The RF unit 514 may be further configured to perform analog beamforming together with digital beamforming. Although shown as being integrated together within the transceiver 510, the modem subsystem 512 and / or the RF unit 514 may be separate devices that are coupled to each other in the BS105 to enable the BS105 to communicate with other devices.

[0063]

[0078] The RF unit 514 may provide modulated and / or processed data (e.g., data packets or, more generally, data messages that may include one or more data packets and other information) to the antenna 516 for transmission to one or more other devices. This may include, for example, the transmission of information to the UE 115 or 400 according to aspects of the present disclosure. The antenna 516 may further receive data messages transmitted from other devices and provide the received data messages for processing and / or demodulation at the transceiver 510. The transceiver 510 may provide demodulated and decoded data (e.g., RACH messages, ACK / NACK for WUS, ACK / NACK for PDCCH signals, UL data, ACK / NACK for DL data, etc.) to the WUS processing and control module 508 for processing. The antenna 516 may include multiple antennas of the same or different designs to maintain multiple transmission links.

[0064]

[0079] In one embodiment, the BS 500 may include multiple transceivers 510 implementing different RATs (e.g., NR and LTE). In one embodiment, the BS 500 may include a single transceiver 510 implementing multiple RATs (e.g., NR and LTE). In one embodiment, the transceiver 510 may include various components, where different combinations of components may implement different RATs.

[0065]

[0080] FIG. 6 shows a scheduling / transmission configuration 600 of a wireless communication method according to some aspects of the present disclosure. As shown, the scheduling / transmission configuration 600 is similar in some respects to the scheduling / transmission configuration 200 described above with respect to FIG. 2. However, the scheduling / transmission configuration 600 of FIG. 6 also shows a BS operating in the DTX mode together with a UE operating in the DRX / C-DRX mode according to the present disclosure.

[0066]

[0081] At 610, the UE is in a sleep state. At the WUS opportunity 620, the WUS 622 is transmitted by the BS. The UE can monitor the WUS 622 during the WUS opportunity 620 (e.g., using the active search space set). An offset 630 follows the WUS opportunity 620, and the UE can return to the sleep state. The offset 630 separates the WUS opportunity 620 from the associated on-duration 640. During the on-duration 640, the UE is in an active state and can monitor the PDCCH or other signals from the BS and / or transmit UL data to the BS as indicated by the UL / DL communication block 642. In some examples in this regard, the UE performs PDCCH monitoring during the on-duration 640 based on the information received during the WUS 622. For example, the WUS 622 can instruct the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) activation. Further, the WUS 622 can include PDCCH monitoring parameters such as the PDCCH monitoring duration, PDCCH monitoring period, and some candidates for PDCCH blind decoding for PDCCH monitoring during the on-duration 640.

[0067]

[0082] The scheduling / transmission configuration 600 keeps the UE in the sleep state 650, followed by another WUS opportunity 660. However, during the WUS opportunity 660, the BS refrains from transmitting the WUS. Instead, the BS refrains from transmitting the WUS as part of operating in the DTX mode. In some examples, the BS refrains from transmitting the WUS during the WUS opportunity 660 based on the traffic load (e.g., heavy traffic load or sparse traffic load). The offset 670 separates the WUS opportunity 660 from the associated on-duration 680 during which the DL / UL communication 682 takes place. During the on-duration 680, the UE can be in the active state or the sleep state. In some examples, the default activation configuration indicates whether the UE is in the active state or the sleep state during the on-duration 680. The UE can receive the default activation configuration from the BS (e.g., via radio resource control (RRC) signaling, physical downlink control channel (PDCCH) signaling, medium access control (MAC) control element (CE) signaling, L1 / L2 signaling, or other signaling). In this regard, the default activation configuration can be static, semi-static, and / or dynamically configured. In some examples, the default activation configuration controls how the UE performs PDCCH monitoring during one or more DRX on-durations following the BS refraining from transmitting the WUS during the WUS opportunity as part of DTX operation.

[0068]

[0083] FIG. 7A shows a scheduling / transmission configuration 700 of a wireless communication method according to some aspects of the present disclosure. FIG. 7A shows a scheduling / transmission configuration 700 similar to the scheduling / transmission configurations of FIGS. 2 and 6, but shows an example where the UE performs active PDCCH monitoring during one or more DRX-on durations following the BS not transmitting WUS during a WUS opportunity (e.g., as part of DTX operation). In this regard, items 710, 720, 722, 730, 740, 742, 750, 760, 770, 780, and 782 of the scheduling / transmission configuration 700 respectively correspond to items 610, 620, 622, 630, 640, 642, 650, 660, 670, 680, and 682 of the scheduling / transmission configuration 600 of FIG. 6. Therefore, for the sake of brevity, the description will not be repeated here. For further details, refer to the description of the similar and / or corresponding items of the scheduling / transmission configuration 200 of FIG. 2 and / or the scheduling / transmission configuration 600 of FIG. 6.

[0069]

[0084] As shown in FIG. 7A, the UE performs WUS monitoring 724 during the WUS opportunity 720. As described above, the UE can perform WUS monitoring 724 based on the WUS configuration received from the network and / or the BS. In this regard, the WUS configuration can indicate to the UE resources related to the WUS opportunity 720, format information for WUS (e.g., message structure), etc. (e.g., search space including time and frequency resources, period, channel, BWP, frequency carrier, etc.). Based on the WUS monitoring 724, the UE will receive the WUS 722. During the on-duration 740, the UE is in an active state and can monitor the PDCCH or other signals from the BS and / or transmit UL data to the BS, as indicated by the UL / DL communication block 742. In the example illustration of FIG. 7A in this regard, the UE performs PDCCH monitoring 744 during the on-duration 740. The UE can execute the PDCCH monitoring 744 based on the information received in the WUS 722. For example, the WUS 722 can instruct the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) activation. Further, the WUS 722 can include PDCCH monitoring parameters such as the PDCCH monitoring duration, PDCCH monitoring period, and several candidates for PDCCH blind decoding for PDCCH monitoring during the on-duration 740.

[0070]

[0085] As also shown in FIG. 7A, the UE performs WUS monitoring 764 during the WUS opportunity 760. This can be similar to the WUS monitoring 724 during the WUS opportunity 720. However, as shown in the figure, during WUS 760, the BS does not transmit the WUS and / or the UE does not detect / receive the WUS. In some examples, the BS does not transmit the WUS during the WUS opportunity 760 as part of the DTX operation. More specifically, in some examples, the BS does not transmit the WUS during the WUS opportunity 760 based on the traffic load (e.g., heavy traffic load or sparse traffic load). Despite not receiving the WUS during the WUS opportunity 760, the UE is in an active state during the on-duration 780 and can monitor the PDCCH or other signals from the BS and / or transmit UL data to the BS as shown by the UL / DL communication block 782. In this regard, in the illustrated example of FIG. 7A, the UE performs PDCCH monitoring 784 during the on-duration 780 associated with the WUS opportunity 760. The UE can actively perform the PDCCH monitoring 784 based on a default activation configuration received from the BS (e.g., via RRC signaling, PDCCH signaling, media access control (MAC) control element (CE) signaling, L1 / L2 signaling, or other signaling). For example, the default activation configuration can instruct the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) activation during one or more of the on-durations associated with the WUS opportunity 760 when the UE does not receive and / or detect the WUS from the BS during the WUS opportunity 760.

[0071]

[0086] Figure 7B shows a scheduling / transmission configuration 790 of a wireless communication method according to some aspects of the present disclosure. Figure 7B shows a scheduling / transmission configuration 790 similar to the scheduling / transmission configurations of Figures 2, 6, and 7A, but shows an example of skipping PDCCH monitoring by the UE remaining in the sleep state during one or more DRX on durations following the BS not transmitting a WUS during a WUS opportunity (e.g., as part of DTX operation). More specifically, in the illustrated example of Figure 7B, the UE does not perform PDCCH monitoring during the on duration 780, and instead remains in the sleep state 786 during the on duration 780 associated with the WUS opportunity 760. The UE may remain in the sleep state 786 based on a default activation configuration received from the BS (e.g., via RRC signaling, PDCCH signaling, media access control (MAC) control element (CE) signaling, or other signaling). For example, the default activation configuration may instruct the UE to skip PDCCH monitoring and / or utilize the sleep state during one or more on durations associated with a WUS opportunity 760 when the UE does not receive and / or detect a WUS from the BS during the WUS opportunity 760.

[0072]

[0087] Figure 8A shows a protocol diagram of a wireless communication method 800 according to some aspects of the present disclosure. More specifically, Figure 8A shows a method 800 corresponding to the scheduling / transmission configuration 700 of Figure 7A or a similar scheduling / transmission configuration that shows an example of the UE performing active PDCCH monitoring during one or more DRX on durations following the BS not transmitting a WUS during a WUS opportunity (e.g., as part of DTX operation).

[0073]

[0088] As illustrated, method 800 includes the BS transmitting a default activation configuration 810 to the UE in an active state. The default activation configuration 810 may be transmitted to the active UE via RRC, PDCCH, MAC CE, L1 / L2 signaling, or other suitable signaling.

[0074]

[0089] Method 800 also includes the BS transmitting a WUS 820 to the UE (or a group of UEs). In this regard, the UE performs WUS monitoring for the WUS 820 following the sleep state. In some examples, the UE performs WUS monitoring according to the WUS configuration.

[0075]

[0090] Method 800 also includes the BS transmitting PDCCH signaling 830. After the offset period, the UE performs PDCCH monitoring. In some examples, the UE performs PDCCH monitoring for the PDCCH signaling 830 based on the information in the WUS 820. In this regard, the WUS 820 may indicate that the UE performs active PDCCH monitoring during the on-duration in which the PDCCH signaling 830 is transmitted.

[0076]

[0091] Method 800 also includes the BS refraining from transmitting, for example, the WUS indicated by 840 during the WUS opportunity to save system resources. In this regard, method 800 includes the UE determining that no WUS is received from the BS during the WUS opportunity based on its WUS monitoring.

[0077]

[0092] Method 800 also includes the BS transmitting PDCCH signaling 850. After the offset period, the UE performs PDCCH monitoring. In some examples, the UE performs PDCCH monitoring for the PDCCH signaling 850 based on the default activation configuration 810 received from the BS. In this regard, the default activation configuration 810 may indicate that the UE performs active PDCCH monitoring during the on-duration in which the PDCCH signaling 850 is transmitted, as shown in FIG. 8A.

[0078]

[0093] Figure 8B shows a protocol diagram of a wireless communication method 860 according to some aspects of the present disclosure. More specifically, Figure 8B shows an example of a scheduling / transmission configuration 790 of Figure 7B or a similar scheduling / transmission configuration corresponding to a method 860 in which, following the BS not transmitting WUS during a WUS opportunity (e.g., as part of DTX operation), the UE remains in the sleep state during one or more DRX on durations, thereby skipping PDCCH monitoring. In this regard, method 860 is similar in many respects to method 800 including steps 810, 820, 830, and 840. However, in method 860, the BS refrains from transmitting PDCCH signaling to the UE (or group of UEs), as indicated by 870. That is, the BS does not transmit PDCCH signaling to the UE (or group of UEs) after refraining from transmitting WUS during a WUS opportunity. In some examples, the UE also skips PDCCH monitoring based on a default activation configuration 810 received from the BS. In this regard, the default activation configuration 810 may indicate that the UE skips PDCCH monitoring during an on duration corresponding to a WUS opportunity in which the BS refrains from transmitting WUS, as shown in Figure 8B.

[0079]

[0094] Figure 9 shows a protocol diagram of a wireless communication method 900 according to some aspects of the present disclosure. More specifically, Figure 9 shows a method 900 that illustrates an example of a UE operating using two different activation configurations in accordance with the present disclosure.

[0080]

[0095] As shown, method 900 includes the BS transmitting a default activation configuration 910 to the UE in an awake or active state. The default activation configuration 910 may be transmitted to an active UE via RRC, PDCCH, MAC CE, or other suitable signaling.

[0081]

[0096] Method 900 also includes the BS refraining from transmitting WUS to the UE (or group of UEs) as indicated by 920 during the WUS opportunity. The UE performs WUS monitoring and determines, as part of method 900, that WUS was not received from the BS during the WUS opportunity. In this regard, the UE continues to perform WUS monitoring in the sleep state. In some examples, the UE performs WUS monitoring according to the WUS configuration.

[0082]

[0097] Method 900 also includes the BS transmitting PDCCH signaling 930. After the offset period, the UE performs PDCCH monitoring according to a first startup configuration (e.g., PDCCH monitoring mode 1 in FIG. 9). In some examples, the UE performs PDCCH monitoring for the PDCCH signaling 930 based on a default startup configuration 910 received from the BS. In this regard, the default startup configuration 910 indicates that the UE operates using the first startup configuration (e.g., PDCCH monitoring mode 1) for a certain amount of time until a timer expires and / or until another change state (e.g., the occurrence of a DRX duty cycle and / or a threshold number of WUS opportunities (e.g., 1, 2, 3, 4, 5, etc.)) where UL or DL communication starts, and then operates in a second different startup configuration (e.g., PDCCH monitoring mode 2 in FIG. 9). In some examples, the first startup configuration (e.g., PDCCH monitoring mode 1) is a default or fallback startup configuration such that the UE operates in the first startup configuration until a certain condition is met (e.g., a certain amount of time has elapsed, a timer has expired, exceeding the threshold number of WUS opportunities, UL communication has started, DL communication has started, etc.), at which point the UE will switch to the second startup configuration (e.g., PDCCH monitoring mode 2). In other examples, the second startup configuration (e.g., PDCCH monitoring mode 2) is a default or fallback startup configuration such that the UE operates in the first startup configuration until a certain condition is met (e.g., a certain amount of time has elapsed, a timer has expired, exceeding the threshold number of WUS opportunities, UL communication has started, DL communication has started, etc.), at which point the UE will fallback to the default second startup configuration.

[0083]

[0098] In the illustrated embodiment of FIG. 9, a first activation configuration (PDCCH monitoring mode 1) is shown that ends at the end of the sleep state of the UE that will perform WUS monitoring and at the start of the WUS opportunity. However, it should be understood that the first activation configuration (PDCCH monitoring mode 1) can end at any time based on a timer, condition, or other parameter, and another activation configuration can start. Further, although FIG. 9 shows a UE operating in two different activation configurations, it should be understood that a UE can operate in any number of different activation configurations. In this regard, in some examples, a UE can store two or more activation configurations in memory, and the BS can provide an indication as to which (and for what time period) of the stored activation configurations the UE is to use. Further, the BS can provide the UE with an updated activation configuration for local storage by the UE from time to time. In this way, both the available activation configurations and the actual activation configurations implemented by the UE can be updated semi-statically and / or dynamically over time.

[0084]

[0099] FIG. 10 shows a protocol diagram of a wireless communication method 1000 according to some aspects of the present disclosure. More specifically, FIG. 10 shows a method 1000 corresponding to the scheduling / transmission configuration 700 of FIG. 7A or a similar scheduling / transmission configuration, similar to method 800 of FIG. 8A, but showing an example in which the UE receives a default activation configuration from the BS as part of the WUS. As shown, at step 1020, method 1000 includes the BS transmitting a WUS including a default activation configuration to the UE (or group of UEs). The WUS with the default activation configuration can be transmitted via PDCCH or other suitable signaling. The remaining steps of method 1000 (e.g., 1030, 1040, and 1050) are similar to steps 830, 840, and 850 of method 800 and the associated UE behavior shown in FIG. 8A. However, in other examples, the remaining steps of method 1000 (e.g., 1030, 1040, and 1050) are similar to steps 830, 840, and 870 of method 860 and the associated UE behavior shown in FIG. 8B.

[0085]

[0100] In some examples, the UE receives an indication of the default startup configuration or which default startup configuration it will use in a manner other than from the BS. For example, in some examples, the default startup configuration may be required by the specification (i.e., without signaling). Further, the UE may be pre-programmed (e.g., in memory 404) with one or more default startup configurations. In some implementations, the UE utilizes a pre-programmed default startup configuration based on one or more of the operating conditions (e.g., connection status, BWP, carrier, geographical location, priority, service, subscription, etc.). In this regard, each of the pre-programmed default startup configurations may be associated with one or more of the operating conditions, and the UE selects an appropriate default wake configuration based on the current operating conditions. In some examples, the UE may receive an indication from the BS as to which of the pre-programmed default startup configurations it will use. Additionally, in some examples, the UE may be a default startup configuration from another UE (e.g., through peer-to-peer communication). For example, the UE may receive a default startup configuration from another UE in a common group (e.g., based on BWP, carrier, geographical location, priority, service, subscription, etc.). In yet other examples, the UE may receive a default startup configuration from one or more other network devices.

[0086]

[0101] FIG. 11 shows a protocol diagram of a wireless communication method 1100 according to some aspects of the present disclosure. More specifically, FIG. 11 shows a method 1100 that illustrates communication between a BS and a plurality of UEs as part of a DRX / DTX startup procedure in accordance with the present disclosure.

[0087]

[0102] As shown, method 1100 includes the BS sending one or more default startup configurations 1110 to a plurality of UEs (i.e., UEs 1, 2, and 3 in FIG. 11). The UE can become awake or active upon receiving the default startup configuration 1100. The default startup configuration 1110 can be sent to the active UE via RRC, PDCCH, MAC CE, or other suitable signaling. In some examples, the default startup configuration 1110 is communicated to the UE as part of the WUS (see, e.g., FIG. 10). The UE can receive the same or different startup configurations 1110. For example, in some implementations, the UEs are grouped based on BWP, carrier, geographical location, priority, service, subscription, and / or other factors. UEs within a common group can receive the same startup configuration 1110. In other examples, the startup configuration 1110 is UE-specific. In this regard, UEs within a common group can receive different default startup configurations 1110 (e.g., based on the UE's traffic load).

[0088]

[0103] Method 1100 also includes the BS sending WUS 1120 to the UE. In this regard, UEs within a common group can be configured to receive the same WUS 1120 and / or part of the WUS (see, e.g., message format 300). For example, in the illustrated example of FIG. 11, grouping 1122 indicates that the same WUS (or part) is being sent to UEs 1 and 2. In this regard, UEs 1 and 2 can be part of a common group (e.g., based on BWP, carrier, geographical location, priority, service, subscription, and / or other factors) or can be configured to receive the same WUS (or part) from the BS. In other examples, different WUSs or (parts) are sent to each UE. In some examples, the UE monitors WUS 1120 according to the WUS configuration. The WUS configuration can be common to a group of UEs and / or UE-specific.

[0089]

[0104] Method 1100 also includes the BS transmitting PDCCH signaling 1130 to the UE. The UE can perform PDCCH monitoring for the PDCCH signaling 1130 based on the information in the WUS 1120. In this regard, the WUS 1120 may indicate that the UE performs active PDCCH monitoring during the DRX-on duration in which the PDCCH signaling 1130 is transmitted.

[0090]

[0105] Method 1100 also includes the BS refraining from transmitting, for example, the WUS indicated by 1140 during the WUS opportunity to save system resources. In this regard, method 1100 can include the UE determining that no WUS is received from the BS during the WUS opportunity based on WUS monitoring.

[0091]

[0106] Method 1100 also includes the BS transmitting PDCCH signaling 1150. In some examples, the UE performs PDCCH monitoring for PDCCH signaling 1150 based on the default activation configuration 1110 received from the BS. In this regard, the default activation configuration 1110 may indicate to the UE to perform active PDCCH monitoring during the DRX on-duration in which the PDCCH signaling 1150 is transmitted. Alternatively, the default activation configuration 1110 may indicate to the UE to remain in a sleep state during the DRX on-duration in which the PDCCH signaling 1150 is transmitted. For example, FIG. 11 shows two UEs that perform active PDCCH monitoring (i.e., UE1 performing active PDCCH monitoring 1152 and UE2 performing active PDCCH monitoring 1154), while another UE remains in a sleep state (i.e., UE3 remains in sleep state 1156). In this regard, UEs in a common group (e.g., UE1 and UE2 in FIG. 11) may be configured with the same default activation configuration such that the UEs in the common group perform PDCCH monitoring in the same manner when the WUS signal is not received from the BS during the wake-up opportunity. Although FIG. 9 shows an example with three UEs, it should be understood that the concepts of the present disclosure are applicable to any number of UEs (e.g., 5, 10, 15, 20, 50, 100, or more).

[0092]

[0107] FIG. 12 shows a flowchart of a communication method 1200 according to some aspects of the present disclosure. Aspects of method 1200 may be performed by a wireless communication device such as UE 115 and / or 400 that utilizes one or more components such as processor 402, memory 404, WUS processing and control module 408, transceiver 410, modem 412, one or more antennas 416, and various combinations thereof. As shown, method 1200 includes several enumerated steps, although method 1200 may include additional steps before, after, and in between the enumerated steps. For example, in some instances, one or more aspects of methods 800, 860, 900, 1000, and / or 1100, scheduling / transmission configurations 200, 600, 700, and / or 790, and / or message structure 300 may be implemented as part of method 1200. In some instances, one or more of the enumerated steps may be omitted or performed in a different order.

[0093]

[0108] In step 1210, method 1200 includes receiving, by a user equipment (UE) from a base station (BS), a default activation configuration related to discontinuous reception (DRX) operation. In some instances, step 1210 includes receiving, by the UE from the BS, the default activation configuration via at least one of radio resource control (RRC) signaling, physical downlink control channel (PDCCH) signaling, or medium access control (MAC) control element (CE) signaling. In some instances, the default activation configuration includes an indication to the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) activation.

[0094]

[0109] In some examples, the received default startup configuration includes an indication to the UE to operate in a first startup configuration or to operate in a second different startup configuration. In some examples, method 1200 includes the UE operating using the first startup configuration during a first time period and the UE operating using the second startup configuration during a second time period. In this regard, the UE may operate in the first time period and / or the second time period based on one or more timers. For example, the default startup configuration may cause the UE to operate in the first startup configuration until a timer expires or another change state (e.g., the occurrence of a DRX duty cycle and / or a threshold number of WUS opportunities (e.g., 1, 2, 3, 4, 5, etc.), the start of UL or DL communication, etc.) is met, and then to operate in a second different startup configuration. The default startup configuration may also cause the UE to operate in a temporary startup configuration and then to revert back to the default configuration after a certain amount of time or when some condition is met. Any number of different startup configurations may be implemented by the BS and / or the UE over time. In this regard, in some examples, the UE may store two or more startup configurations in a memory (e.g., memory 404). The BS may provide an indication to the UE as to which of the startup configurations (including for how long) is to be implemented (e.g., based on a timer and / or a condition). In some examples, the indication to the UE as to which startup configuration to implement and for how long is included as part of the default startup configuration received in step 1210.

[0095]

[0110] In step 1220, method 1200 includes monitoring, by a UE, a WUS from a BS during a wake-up signal (WUS) opportunity. The UE can monitor the WUS based on a WUS configuration received from the BS. In this regard, method 1200 can include receiving a WUS configuration from the BS. The WUS configuration for the UE or a related group of UEs to which the UE belongs can be fixed, semi-static, and / or dynamically configured by the BS. In some examples, the WUS configuration is received by the UE as part of the WUS transmitted during a WUS opportunity. The WUS configuration can indicate to the UE resources related to the WUS opportunity, WUS format, etc. (such as search space including time and frequency, period, channel, BWP, frequency carrier, etc.). The UE can utilize information from the WUS configuration to monitor, receive, and / or decode the WUS.

[0096]

[0111] In step 1230, method 1200 includes determining, by the UE, whether the WUS was received from the BS during the WUS opportunity. The UE can utilize information from the WUS configuration to determine whether the WUS was received from the BS. For example, if the UE monitors resources related to the WUS opportunity and does not detect the WUS, the UE can determine that the WUS was not received from the BS during the WUS opportunity. Further, the UE can use an identifier related to the UE or a group of UEs (such as PS-RNTI, C-RNTI, etc.) to determine whether the WUS was received from the BS. For example, if the UE does not receive activation downlink control information or the WUS addressed to an identifier related to the UE (or a group of UEs of which the UE is a part), the UE can determine that the WUS was not received from the BS during the WUS opportunity.

[0097]

[0112] In step 1240, method 1200 includes the UE performing physical downlink control channel (PDCCH) monitoring based on the default startup configuration and whether the WUS was received from the BS during the WUS opportunity. If the UE receives the WUS from the BS during the WUS opportunity, the UE can perform PDCCH monitoring according to the information in the WUS. For example, the WUS may indicate to the UE to trigger an aperiodic channel state reference signal (A-CSI-RS), use a reduced PDCCH monitoring frequency, perform a bandwidth part (BWP) switch, perform secondary cell (Scell) startup, and / or utilize other PDCCH monitoring techniques. Further, the WUS may indicate to the UE to skip PDCCH monitoring (e.g., remain in the sleep state) during one or more of the on durations associated with the WUS opportunity.

[0098]

[0113] The default startup configuration can indicate how the UE operates when the UE does not receive WUS from the BS during the WUS opportunity in step 1230. The default startup configuration for the UE or the relevant group of UEs to which the UE belongs can be fixed, semi-static, and / or dynamically configured by the BS. In some examples, the default startup configuration will cause the UE to skip PDCCH monitoring during one or more on durations associated with the WUS opportunity in response to determining that WUS was not received from the BS during the WUS opportunity. In some implementations, the UE skips PDCCH monitoring by remaining in the sleep state during one or more on durations, giving the UE additional power savings. In other examples, the default startup configuration causes the UE to actively perform PDCCH monitoring during one or more on durations associated with the WUS opportunity in response to determining that WUS was not received from the BS during the WUS opportunity. In this regard, the default startup configuration can indicate to the UE the manner in which PDCCH monitoring is to be performed. For example, the default startup configuration can indicate to the UE to trigger an aperiodic channel state reference signal (A-CSI-RS), use a reduced PDCCH monitoring frequency, perform a bandwidth part (BWP) switch, perform secondary cell (Scell) activation, and / or utilize other PDCCH monitoring techniques. In some examples, the default startup configuration is updated semi-statically and / or dynamically based on traffic load conditions (such as for a group of UEs, BWP, carrier, etc.). The default startup configuration can be configured semi-statically and / or dynamically over time to select whether the UE remains in the sleep state during one or more on durations associated with the WUS opportunity (such as during a light traffic state) or actively monitors the PDCCH during one or more on durations associated with the WUS opportunity (such as during a heavy traffic state).

[0099]

[0114] Furthermore, according to some aspects, the BS and the UE may utilize various varying startup configurations. For example, the BS may determine to provide different startup configurations to different UEs or other devices within the cell of the BS. In this way, according to various aspects, different types of UEs may have different default startup configurations with different startup characteristics. For example, a first UE may have an initial / first startup configuration, and another UE may have a different startup configuration. In a scenario where the BS interacts with several UEs of different classes or types, by providing a wide variety of startup configurations, the BS can provide UE-specific startup configurations that help save power and processing resources. By dynamically controlling the startup configuration, the BS can adjust specific operating behaviors for one or more specific UEs in the communication network.

[0100]

[0115] FIG. 13 shows a flowchart of a communication method 1300 according to some aspects of the present disclosure. Aspects of method 1300 may be performed by a wireless communication device such as BS105 and / or 500 that utilizes one or more components such as processor 502, memory 504, WUS processing and control module 508, transceiver 510, modem 512, one or more antennas 516, and various combinations thereof. As shown, method 1300 includes several enumerated steps, but method 1300 may include additional steps before, after, and in between the enumerated steps. For example, in some examples, one or more aspects of methods 800, 860, 900, 1000, and / or 1100, scheduling / transmission configurations 200, 600, 700, and / or 790, and / or message structure 300 may be implemented as part of method 1300. In some examples, one or more of the enumerated steps may be omitted or performed in a different order.

[0101]

[0116] In step 1310, method 1300 includes transmitting, by a base station (BS) to a user equipment (UE), a default activation configuration related to discontinuous reception (DRX) operation. In some examples, step 1310 includes transmitting, by the BS to the UE, the default activation configuration via at least one of radio resource control (RRC) signaling, physical downlink control channel (PDCCH) signaling, or medium access control (MAC) control element (CE) signaling. In some examples, the default activation configuration includes an instruction to the UE to perform one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, PDCCH monitoring reduction, bandwidth part (BWP) switching, or secondary cell (Scell) activation. The default activation configuration for the UE or a related group of UEs to which the UE belongs may be fixed, semi-static, and / or dynamically configured by the BS. For this purpose, the BS may transmit a default activation configuration updated over time. In some examples, the default activation configuration is updated semi-statically and / or dynamically by the BS based on traffic load conditions (e.g., for a group of UEs, BWP, carrier, etc.). The default activation configuration may be configured semi-statically and / or dynamically such that the UE either remains in a sleep state during one or more on durations related to a wake-up signal (WUS) opportunity (e.g., during a light traffic state) or actively monitors the PDCCH during one or more on durations related to a WUS opportunity (e.g., during a heavy traffic state).

[0102]

[0117] In step 1320, method 1300 includes determining by the BS whether to send a wake-up signal (WUS) to the UE during a WUS opportunity based on the traffic load. In a sparse traffic scenario, the likelihood that wake-up is required for each UE in the wake-up group (e.g., sharing the same PDCCH-WUS) is extremely low. Thus, most of the time, the wake-up indicator will be all zeros, indicating that otherwise, the UE must remain in the sleep state during one or more on durations associated with the WUS opportunity. On the other hand, in a heavy traffic scenario, the likelihood that wake-up is required for each UE in the wake-up group is extremely high. Thus, most of the time, in such a situation, the wake-up indicator will be all ones, indicating that otherwise, the UE must actively monitor the PDCCH during one or more on durations associated with the WUS opportunity.

[0103]

[0118] In such sparse traffic scenarios and heavy traffic scenarios, the BS may refrain from transmitting the WUS during the WUS opportunity. In addition to reducing network traffic and potential interference, the BS that refrains from transmitting the WUS can also provide power savings for both the BS and the UE. For this purpose, in some examples, the BS determines not to transmit the WUS to the UE during the WUS opportunity when the traffic load is below a first threshold, and determines to transmit the WUS to the UE during the WUS opportunity when the traffic load exceeds a second threshold. The first threshold and the second threshold may be the same or different. For example, in some examples, the traffic load is evaluated based on the number of wake-up indicators for the WUS that will be the same for a particular WUS and / or WUS opportunity. In this regard, the threshold for determining not to transmit the WUS and the threshold for determining to transmit the WUS may be the same or different. For example, if the threshold percentage (e.g., 50%, 60%, 70%, 75%, 80%, 90%, etc.) and / or the threshold number (e.g., 2, 3, 4, 5, 6, 7, 8, etc.) of wake-up indicators that are the same for a particular WUS and / or WUS opportunity are exceeded, the BS may refrain from transmitting the WUS regardless of whether the common indicator indicates that the UE wakes up or remains in the sleep state. As another example, the threshold percentage and / or the threshold number of wake-up indicators that need to be the same for the BS to refrain from transmitting the WUS may vary depending on whether the common indicator indicates that the UE wakes up or remains in the sleep state. In this regard, the threshold percentage and / or the threshold number may be higher when the common indicator indicates that the UE wakes up than when the common indicator indicates that the UE remains in the sleep state, and vice versa.

[0104]

[0119] In step 1330, method 1300 includes either (1) transmitting a WUS signal to the UE during a WUS opportunity or (2) refraining from transmitting a WUS signal to the UE during a WUS opportunity, based on the determination in step 1320. When the BS transmits a WUS, the BS can utilize the message structure of FIG. 3 or any other suitable message structure (such as all activation indicators including all activation indicators before all activation information fields, interleaved activation indicators, and all activation information fields before the activation information field). In some examples, the WUS transmitted by the BS during a WUS opportunity includes a WUS configuration for the UE (or a group of UEs). The WUS configuration can indicate to the UE resources related to the WUS opportunity, WUS format, etc. (such as search space including time and frequency, period, channel, BWP, frequency carrier, etc.). In some examples, the WUS transmitted by the BS during a WUS opportunity includes a default activation configuration.

[0105]

[0120] When the BS does not send the WUS at step 1330, the UE can operate according to the default activation configuration sent at step 1310. In some examples, the default activation configuration sent at step 1310 indicates to the UE to operate with a first activation configuration or a second different activation configuration. In some examples, the default activation configuration sent at step 1310 indicates to the UE to operate using the first activation configuration during a first time period and to operate using the second activation configuration during a second time period. In this regard, the UE can operate in the first time period and / or the second time period based on one or more timers. For example, the default activation configuration can cause the UE to operate with the first activation configuration until the timer expires or some other changing condition (e.g., the start of UL or DL communication occurs where the DRX duty cycle and / or a threshold number of WUS opportunities (e.g., 1, 2, 3, 4, 5, etc.) are met), and then to operate with a second different activation configuration. That is, the default activation configuration can cause the UE to operate with a temporary activation configuration and then to return to the default configuration after a certain amount of time or when some condition is met. Any number of different activation configurations can be implemented by the BS and / or the UE over time. As described above, the default activation configuration can be configured semi-statically and / or dynamically to select whether the UE remains in the sleep state or actively monitors the PDCCH during one or more on durations associated with the WUS opportunity.

[0106]

[0121] In step 1340, method 1300 includes transmitting a physical downlink control channel (PDCCH) signal by the BS during a duration associated with a WUS opportunity. In this regard, the duration associated with a WUS opportunity can include one or more discontinuous reception (DRX) on durations associated with the WUS opportunity. As described above, the default activation configuration transmitted as step 1310 can indicate how the UE is to perform PDCCH monitoring during the duration associated with the WUS opportunity when the BS does not transmit WUS during the WUS opportunity. In some examples, the default activation configuration from step 1310 causes the UE to skip PDCCH monitoring during one or more on durations associated with the WUS opportunity in response to determining that WUS was not received from the BS during the WUS opportunity. In other examples, the default activation configuration transmitted in step 1310 causes the UE to actively perform PDCCH monitoring during one or more on durations associated with the WUS opportunity in response to determining that WUS was not received from the BS during the WUS opportunity. That is, the UE will monitor the PDCCH signal transmitted in such a case 1340.

[0107]

[0122] Information and signals can 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 referred to throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0108]

[0123] The various illustrative blocks and modules described in connection with the disclosure of this specification may be implemented or performed using a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gates or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration).

[0109]

[0124] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. When implemented in software executed by a processor, the functions may be stored on or transmitted across a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. The features implementing the functions may also be physically located at various positions, including being distributed such that portions of the functions are implemented at different physical locations. Further, as used herein, including within the claims, the "or" used in a list of items (e.g., a list of items ending with phrases such as "at least one of" or "one or more of") indicates an inclusive list, 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).

[0110]

[0125] Those skilled in the art will now appreciate that, without departing from the spirit and scope of the present disclosure, many modifications, substitutions, and variations can be made in the materials, apparatus, configurations, and methods of use of the devices of the present disclosure, and thereto, according to the particular application area at hand. In light of this, since the specific embodiments illustrated and described herein are only some examples of the present disclosure, the scope of the present disclosure should not be limited to the scope of those specific embodiments, but rather, should fully correspond to the scope of the appended claims below and their functional equivalents.

Claims

1. 1. A method of wireless communication, comprising: receiving, by a user equipment (UE), a default startup configuration related to discontinuous reception (DRX) operation from a base station (BS); monitoring, by the UE, for a WUS from the BS during a WUS opportunity; determining, by the UE, whether the WUS was received from the BS during the WUS opportunity; performing, by the UE, physical downlink control channel (PDCCH) monitoring based on the default startup configuration and whether the WUS is received from the BS during the WUS opportunity; A method comprising:

2. The determining whether the WUS is received from the BS during the WUS opportunity includes: determining that the WUS was not received from the BS during the WUS opportunity; The method of claim 1 , comprising:

3. The performing of the PDCCH monitoring includes: skipping PDCCH monitoring for a duration associated with the WUS opportunity; The method of claim 2 , comprising:

4. The performing of the PDCCH monitoring includes: actively performing PDCCH monitoring for a duration associated with the WUS opportunity; The method of claim 2 , comprising:

5. The method of claim 3 or claim 4, wherein the duration associated with the WUS opportunity comprises one or more DRX on durations associated with the WUS opportunity.

6. The receiving of the default startup configuration includes: receiving, by the UE, from the BS via at least one of Radio Resource Control (RRC) signaling, PDCCH signaling, or Medium Access Control (MAC) Control Element (CE) signaling; The method of claim 1 , comprising:

7. The receiving of the default startup configuration includes: receiving, by the UE, from the BS, the WUS during the WUS opportunity, the WUS including the default startup configuration; The method of claim 1 , comprising:

8. The receiving of the default startup configuration includes: receiving, by the UE, from the BS, the default startup configuration having an indication to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; The method of claim 1 , comprising:

9. operating, by the UE, using the first startup configuration for a first period of time; operating, by the UE, using the second startup configuration for a second period of time; The method of claim 8 further comprising:

10. said operating using the first launch configuration for the first time period comprises: operating, by the UE, using the first startup configuration for the first time period based on a timer; 10. The method of claim 9, comprising:

11. The receiving of the default startup configuration includes: receiving, by the UE, from the BS, the default activation configuration having instructions for one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, a PDCCH monitoring reduction, a bandwidth portion (BWP) switch, or a secondary cell (Scell) activation; The method of claim 1 , comprising:

12. 1. A method of wireless communication, comprising: Sending, by a base station (BS), to a user equipment (UE), a default startup configuration related to a discontinuous reception (DRX) operation; determining, by the BS, whether to send a wake-up signal (WUS) to the UE during a WUS opportunity based on a traffic load; transmitting, by the BS, a physical downlink control channel (PDCCH) signal during a duration associated with the WUS opportunity; A method comprising:

13. The determining whether to transmit the WUS to the UE during the WUS opportunity based on the traffic load includes: determining not to transmit the WUS to the UE during the WUS opportunity based on the traffic load being below a first threshold; determining to transmit the WUS to the UE during the WUS opportunity based on the traffic load exceeding a second threshold; The method of claim 12 , comprising at least one of:

14. The method of claim 12 , wherein the duration associated with the WUS opportunity comprises one or more discontinuous reception (DRX) on durations associated with the WUS opportunity.

15. The transmitting of the default startup configuration comprises: sending, by the BS, to the UE via at least one of Radio Resource Control (RRC) signaling, PDCCH signaling, or Medium Access Control (MAC) Control Element (CE) signaling; The method of claim 12, comprising:

16. The transmitting of the default startup configuration comprises: transmitting, by the BS, the WUS to the UE during the WUS opportunity, the WUS including the default startup configuration; The method of claim 12, comprising:

17. The transmitting of the default startup configuration comprises: sending, by the BS, to the UE, the default startup configuration having an instruction for the UE to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; The method of claim 12, comprising:

18. The transmitting of the default startup configuration comprises: sending, by the BS, to the UE, the default startup configuration having an instruction for the UE to operate in the first default startup configuration or the second default startup configuration based on a timer; 20. The method of claim 17, comprising:

19. The transmitting of the default startup configuration comprises: transmitting, by the BS, the default start-up configuration to the group of UEs based on one or more of a bandwidth portion (BWP) or a carrier associated with the group of UEs including the UE; The method of claim 12, comprising:

20. The transmitting of the default startup configuration comprises: sending, by the BS, to the UE, the default activation configuration having instructions for one or more of: aperiodic channel state reference signal (A-CSI-RS) triggering, PDCCH monitoring reduction, bandwidth portion (BWP) switching, or secondary cell (Scell) activation; The method of claim 12, comprising:

21. A user equipment, receiving a default startup configuration associated with discontinuous reception (DRX) operation from a base station (BS); monitoring for a WUS from the BS during a WUS opportunity; a transceiver configured to: a processor in communication with the transceiver; wherein the processor: determining whether the WUS was received from the BS during the WUS opportunity; performing physical downlink control channel (PDCCH) monitoring based on the default startup configuration and whether the WUS was received from the BS during the WUS opportunity; A user equipment configured to:

22. 22. The user equipment of claim 21, wherein the processor is further configured to skip PDCCH monitoring for a duration associated with the WUS opportunity if the processor determines that the WUS was not received from the BS during the WUS opportunity.

23. 22. The user equipment of claim 21, wherein the processor is further configured to actively perform PDCCH monitoring for a duration associated with the WUS opportunity if the processor determines that the WUS was not received from the BS during the WUS opportunity.

24. The user equipment of claim 22 or claim 23, wherein the duration associated with the WUS opportunity comprises one or more DRX on durations associated with the WUS opportunity.

25. The transceiver includes: receiving the default start-up configuration from the BS via at least one of radio resource control (RRC) signaling, PDCCH signaling, or medium access control (MAC) control element (CE) signaling; The user equipment of claim 21 , further configured to:

26. The transceiver includes: receiving the WUS during the WUS opportunity from the BS, the WUS including the default startup configuration; The user equipment of claim 21 , further configured to:

27. The transceiver includes: receiving, from the BS, the default startup configuration having an indication to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; The user equipment of claim 21 , further configured to:

28. The processor, operating using the first startup configuration for a first period of time; operating using the second startup configuration for a second period of time; 28. The user equipment of claim 27, further configured to:

29. The processor, operating using the first activation configuration for the first time period based on a timer; 30. The user equipment of claim 28, further configured to:

30. The transceiver includes: receiving, from the BS, the default activation configuration having instructions for one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, a PDCCH monitoring reduction, a bandwidth portion (BWP) switch, or a secondary cell (Scell) activation; The user equipment of claim 21 , further configured to:

31. A base station, sending a default startup configuration related to discontinuous reception (DRX) operation to a user equipment (UE); transmitting a physical downlink control channel (PDCCH) signal during a duration associated with a wake-up signal (WUS) opportunity; a transceiver configured to: a processor in communication with the transceiver; wherein the processor: determining whether to transmit a WUS to the UE during the WUS opportunity based on a traffic load; A base station configured to perform the above.

32. The processor, determining not to transmit the WUS to the UE during the WUS opportunity based on the traffic load being below a first threshold; or determining to transmit the WUS to the UE during the WUS opportunity based on the traffic load exceeding a second threshold; The base station of claim 31 further configured to:

33. 32. The base station of claim 31, wherein the duration associated with the WUS opportunity comprises one or more discontinuous reception (DRX) on durations associated with the WUS opportunity.

34. The transceiver includes: sending the default start-up configuration to the UE via at least one of radio resource control (RRC) signaling, PDCCH signaling, or medium access control (MAC) control element (CE) signaling; The base station of claim 31 further configured to:

35. The transceiver includes: transmitting the WUS to the UE during the WUS opportunity, the WUS including the default startup configuration; The base station of claim 31 further configured to:

36. The transceiver includes: sending to the UE the default startup configuration with instructions for the UE to operate with a first startup configuration or to operate with a second startup configuration, the second startup configuration being different from the first startup configuration; The base station of claim 31 further configured to:

37. The transceiver includes: sending to the UE the default startup configuration having an instruction for the UE to operate in the first default startup configuration or the second default startup configuration based on a timer; The base station of claim 36, further configured to:

38. The transceiver includes: sending the default startup configuration to a group of UEs based on one or more of a bandwidth portion (BWP) or a carrier associated with the group of UEs including the UE; The base station of claim 31 further configured to:

39. The transceiver includes: sending to the UE the default activation configuration having instructions for one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, a PDCCH monitoring reduction, a bandwidth portion (BWP) switch, or a secondary cell (Scell) activation; The base station of claim 31 further configured to:

40. A non-transitory computer readable medium having program code recorded thereon, the program code comprising: code for causing a user equipment (UE) to receive from a base station (BS) a default startup configuration related to discontinuous reception (DRX) operation; code for causing the UE to monitor for a WUS from the BS during a WUS opportunity; code for causing the UE to determine whether the WUS was received from the BS during the WUS opportunity; code for causing the UE to perform physical downlink control channel (PDCCH) monitoring based on the default startup configuration and whether the WUS is received from the BS during the WUS opportunity; 1. A non-transitory computer-readable medium comprising:

41. The code for causing the UE to perform the PDCCH monitoring comprises: code for causing the UE to skip PDCCH monitoring for a duration associated with the WUS opportunity if the UE determines that the WUS was not received from the BS during the WUS opportunity; 42. The non-transitory computer readable medium of claim 41, comprising:

42. The code for causing the UE to perform the PDCCH monitoring comprises: code for causing the UE to actively perform PDCCH monitoring for the duration associated with the WUS opportunity, if the UE determines that the WUS was received from the BS during the WUS opportunity; 42. The non-transitory computer readable medium of claim 41, comprising:

43. 43. The non-transitory computer-readable medium of claim 41 or claim 42, wherein the duration associated with the WUS opportunity comprises one or more DRX on durations associated with the WUS opportunity.

44. The code for causing the UE to receive the default startup configuration comprises: code for causing the UE to receive the default startup configuration from the BS via at least one of radio resource control (RRC) signaling, PDCCH signaling, or medium access control (MAC) control element (CE) signaling; 41. The non-transitory computer readable medium of claim 40, comprising:

45. The code for causing the UE to receive the default startup configuration comprises: code for causing the UE to receive the WUS from the BS during the WUS opportunity, the WUS including the default startup configuration; 41. The non-transitory computer readable medium of claim 40, comprising:

46. The code for causing the UE to receive the default startup configuration comprises: code for causing the UE to receive, from the BS, the default startup configuration having an indication to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; 41. The non-transitory computer readable medium of claim 40, comprising:

47. code for causing the UE to operate using the first startup configuration for a first period of time; code for causing the UE to operate using the second startup configuration for a second period of time; 47. The non-transitory computer readable medium of claim 46, further comprising:

48. The code for causing the UE to operate using the first startup configuration for the first time period comprises: code for causing the UE to operate using the first startup configuration for the first time period based on a timer; 48. The non-transitory computer readable medium of claim 47, comprising:

49. The code for causing the UE to receive the default startup configuration comprises: code for causing the UE to receive, from the BS, the default activation configuration having instructions for one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, a PDCCH monitoring reduction, a bandwidth portion (BWP) switch, or a secondary cell (Scell) activation; 41. The non-transitory computer readable medium of claim 40, comprising:

50. A non-transitory computer readable medium having program code recorded thereon, the program code comprising: code for causing a base station (BS) to send to a user equipment (UE) a default startup configuration related to discontinuous reception (DRX) operation; code for causing the BS to determine whether to transmit a wake-up signal (WUS) to the UE during a WUS opportunity based on a traffic load; code for causing the BS to transmit a physical downlink control channel (PDCCH) signal during a duration associated with the WUS opportunity; 1. A non-transitory computer-readable medium comprising:

51. The determining whether to transmit the WUS to the UE during the WUS opportunity based on the traffic load includes: code for causing the BS to determine not to transmit the WUS to the UE during the WUS opportunity based on the traffic load being below a first threshold; code for causing the BS to determine to transmit the WUS to the UE during the WUS opportunity based on the traffic load being above a second threshold; 51. The non-transitory computer readable medium of claim 50, comprising at least one of:

52. 51. The non-transitory computer-readable medium of claim 50, wherein the duration associated with the WUS opportunity comprises one or more discontinuous reception (DRX) on durations associated with the WUS opportunity.

53. The code for causing the BS to transmit the default startup configuration comprises: code for causing the BS to send the default startup configuration to the UE via at least one of radio resource control (RRC) signaling, PDCCH signaling, or medium access control (MAC) control element (CE) signaling; 51. The non-transitory computer readable medium of claim 50, comprising:

54. The code for causing the BS to transmit the default startup configuration comprises: code for causing the BS to transmit the WUS during the WUS opportunity to the UE, the WUS including the default startup configuration; 51. The non-transitory computer readable medium of claim 50, comprising:

55. The code for causing the BS to transmit the default startup configuration comprises: code for causing the BS to send to the UE the default startup configuration with instructions for the UE to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; 51. The non-transitory computer readable medium of claim 50, comprising:

56. The code for causing the BS to transmit the default startup configuration comprises: code for causing the BS to send, to the UE, based on a timer, the default startup configuration with an instruction for the UE to operate in the first default startup configuration or the second default startup configuration; 56. The non-transitory computer readable medium of claim 55, comprising:

57. The code for causing the BS to transmit the default startup configuration comprises: code for causing the BS to transmit the default startup configuration to the group of UEs based on one or more of a bandwidth portion (BWP) or a carrier associated with the group of UEs including the UE; 51. The non-transitory computer readable medium of claim 50, comprising:

58. The code for causing the BS to transmit the default startup configuration comprises: code for causing the BS to send to the UE the default activation configuration having instructions for one or more of an aperiodic channel state reference signal (A-CSI-RS) trigger, a PDCCH monitoring reduction, a bandwidth portion (BWP) switch, or a secondary cell (Scell) activation; 51. The non-transitory computer readable medium of claim 50, comprising:

59. An apparatus comprising: means for receiving a default startup configuration associated with discontinuous reception (DRX) operation from a base station (BS); means for monitoring a WUS from the BS during a WUS opportunity; means for determining whether the WUS was received from the BS during the WUS opportunity; means for performing physical downlink control channel (PDCCH) monitoring based on the default startup configuration and whether the WUS is received from the BS during the WUS opportunity; An apparatus comprising:

60. The means for determining whether the WUS was received from the BS during the WUS opportunity comprises: means for determining that the WUS was not received from the BS during the WUS opportunity; 60. The apparatus of claim 59, comprising:

61. The means for performing the PDCCH monitoring comprises: means for skipping PDCCH monitoring for a duration associated with the WUS opportunity; 61. The apparatus of claim 60, comprising:

62. The means for performing the PDCCH monitoring comprises: means for actively performing PDCCH monitoring for a duration associated with said WUS opportunity; 61. The apparatus of claim 60, comprising:

63. 63. The apparatus of claim 61 or claim 62, wherein the duration associated with the WUS opportunity comprises one or more DRX on durations associated with the WUS opportunity.

64. The means for receiving the default startup configuration further comprises: means for receiving the default start-up configuration from the BS via at least one of Radio Resource Control (RRC) signaling, PDCCH signaling, or Medium Access Control (MAC) Control Element (CE) signaling; 60. The apparatus of claim 59, comprising:

65. The means for receiving the default startup configuration further comprises: means for receiving the WUS during the WUS opportunity from the BS, the WUS including the default startup configuration; 60. The apparatus of claim 59, comprising:

66. The means for receiving the default startup configuration further comprises: means for receiving from the BS the default startup configuration having an indication to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; 60. The apparatus of claim 59, comprising:

67. means for operating using the first startup configuration for a first period of time; means for operating using the second startup configuration for a second period of time; 67. The apparatus of claim 66, further comprising:

68. The means for operating using the first startup configuration for the first time period comprises: means for operating using the first activation configuration for the first time period based on a timer; 68. The apparatus of claim 67, comprising:

69. The means for receiving the default startup configuration further comprises: means for receiving from the BS the default activation configuration having instructions for one or more of: aperiodic channel state reference signal (A-CSI-RS) triggering, PDCCH monitoring reduction, bandwidth portion (BWP) switching, or secondary cell (Scell) activation; 60. The apparatus of claim 59, comprising:

70. An apparatus comprising: Means for transmitting a default startup configuration related to discontinuous reception (DRX) operation to a user equipment (UE); means for determining whether to transmit a wake-up signal (WUS) to the UE during a WUS opportunity based on a traffic load; means for transmitting a physical downlink control channel (PDCCH) signal during a duration associated with the WUS opportunity; An apparatus comprising:

71. The means for determining whether to transmit the WUS to the UE during the WUS opportunity based on the traffic load, means for determining not to transmit the WUS to the UE during the WUS opportunity based on the traffic load being below a first threshold; means for determining to transmit the WUS to the UE during the WUS opportunity based on the traffic load exceeding a second threshold; 71. The apparatus of claim 70, comprising at least one of:

72. 71. The apparatus of claim 70, wherein the duration associated with the WUS opportunity comprises one or more discontinuous reception (DRX) on durations associated with the WUS opportunity.

73. The means for transmitting the default startup configuration further comprises: means for transmitting the default startup configuration to the UE via at least one of Radio Resource Control (RRC) signaling, PDCCH signaling, or Medium Access Control (MAC) Control Element (CE) signaling; 71. The apparatus of claim 70, comprising:

74. The means for transmitting the default startup configuration further comprises: means for transmitting, to the UE, the WUS during the WUS opportunity, the WUS including the default startup configuration; 71. The apparatus of claim 70, comprising:

75. The means for transmitting the default startup configuration further comprises: means for transmitting to the UE the default startup configuration having an instruction for the UE to operate in a first startup configuration or to operate in a second startup configuration, the second startup configuration being different from the first startup configuration; 71. The apparatus of claim 70, comprising:

76. The means for transmitting the default startup configuration further comprises: means for transmitting to the UE, based on a timer, the default startup configuration having an instruction for the UE to operate in the first default startup configuration or the second default startup configuration; 76. The apparatus of claim 75, comprising:

77. The means for transmitting the default startup configuration further comprises: means for transmitting the default startup configuration to a group of UEs based on one or more of a Bandwidth Partition (BWP) or a carrier associated with the group of UEs including the UE; 71. The apparatus of claim 70, comprising:

78. The means for transmitting the default startup configuration further comprises: means for transmitting to the UE the default activation configuration having instructions for one or more of an aperiodic channel condition reference signal (A-CSI-RS) trigger, a PDCCH monitoring reduction, a bandwidth portion (BWP) switching, or a secondary cell (Scell) activation; 71. The apparatus of claim 70, comprising:

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