SCELL dormancy indication when DRX is not configured for connected mode UE

Abstract

Aspects of the present disclosure provide techniques that may allow a UE to receive and process downlink control information (DCI) indicating dormant behavior of one or more secondary cells when the UE does not have a CDRX mode configuration.

Description

Technical Field

[0001] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for handling indications for changing secondary cell processing states. Background Art

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access systems include: 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name just a few.

[0003] In some examples, a wireless multiple access communication system may include multiple base stations (BSs), each BS being capable of simultaneously supporting communication of multiple communication devices (also referred to as user equipment (UE)). In an LTE or LTE-A network, a set of one or more base stations may define an eNodeB (eNB). In other examples (e.g., in next generation, new radio (NR) or 5G networks), a wireless multiple access communication system may include multiple distributed units (DUs) (e.g., edge units (EUs), edge nodes (ENs), radio heads (RHs), smart radio heads (SRHs), transmit receive points (TRPs), etc.) communicating with multiple central units (CUs) (e.g., central nodes (CNs), access node controllers (ANCs), etc.), wherein a set of one or more DUs communicating with a CU may define an access node (e.g., which may be referred to as a BS, a next generation Node B (gNB or gNodeB), a TRP, etc.). A BS or DU may communicate with a set of UEs on a downlink channel (e.g., for transmission from a BS or DU to a UE) and an uplink channel (e.g., for transmission from a UE to a BS or DU).

[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, or even global level. New radio (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) on downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0005] As the demand for mobile broadband access continues to increase, further improvements to NR and LTE technologies are needed. Preferably, these improvements should be applicable to other multi-access technologies and the telecommunication standards that employ them. Summary of the invention

[0006] The systems, methods, and devices of the present disclosure each have several aspects, no single aspect of which is solely responsible for its desired attributes. Without limiting the scope of the present disclosure as expressed by the appended claims, some features will now be briefly discussed. After considering this discussion, and especially after reading the section entitled "Detailed Description of the Invention," it will be understood how the features of the present disclosure provide advantages including improved communication between wireless communication devices.

[0007] Certain aspects provide a method for wireless communication by a user equipment. The method generally includes: receiving an indication of a change in sleep behavior of one or more secondary cells (SCells) or SCell groups from a network entity when the UE is in a first mode associated with continuous physical downlink control (PDCCH) monitoring; and applying the indicated change in sleep behavior.

[0008] Certain aspects provide a method for wireless communications by a network entity. The method generally includes: providing an indication of a change in sleep behavior of one or more secondary cells (SCells) or SCell groups to a user equipment (UE) in a first mode associated with continuous physical downlink control (PDCCH) monitoring; and applying the indicated change in sleep behavior.

[0009] Aspects of the present disclosure provide units, devices, processors and computer-readable media for performing the methods described herein.

[0010] To achieve the aforementioned and related purposes, the one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are only indicative of some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to be able to understand the above-mentioned features of the present disclosure in detail, a more specific description briefly summarized above may be made with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the description may allow for other equally effective aspects.

[0012] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in which certain aspects of the present disclosure may be implemented.

[0013] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in which certain aspects of the present disclosure may be implemented.

[0014] Figure 3 An example discontinuous reception (DRX) scenario is illustrated.

[0015] Figure 4 Example operations for wireless communications by a user device in accordance with various aspects of the present disclosure are illustrated.

[0016] Figure 5 Example operations for wireless communications by a network entity are illustrated in accordance with various aspects of the present disclosure.

[0017] Figure 6 An example call flow diagram for handling signaling indicating a change in dormancy behavior in a secondary cell (SCell) in accordance with various aspects of the present disclosure is illustrated.

[0018] Fig. 7A and 7B Example scenarios of changes in sleep behavior in SCells according to various aspects of the present disclosure are illustrated.

[0019] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0020] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for handling indications for changing secondary cell processing states.In some cases, a UE without connected mode DRX configuration may still be able to receive and process SCell dormancy indications.

[0021] The following description provides examples rather than limiting the scope, applicability or examples set forth in the claims. Without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may appropriately omit, replace or add various processes or components. For example, the described method may be performed in an order different from the order described, and various steps may be added, omitted or combined. In addition, the features described for some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functions or structures and functions attached to or in addition to the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims. The word "exemplary" is used herein to mean "used as an example, instance or illustration". Any aspect described herein as "exemplary" is not necessarily to be interpreted as being preferred or advantageous over other aspects.

[0022] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, frequency channel, tone, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, 5G NR RAT networks can be deployed.

[0023] Figure 1 An example wireless communication network 100 is illustrated in which aspects of the present disclosure may be performed. For example, one or more UEs 120 in the network 100 may be configured to perform Figure 4 Similarly, the base station 110 (eg, gNB) in the network 100 may be configured to perform Figure 5 Operation 500.

[0024] like Figure 1As shown, the wireless communication network 100 may include multiple base stations (BSs) 110a-z (each BS is also individually referred to as BS 110 or collectively referred to as BS 110 herein) and other network entities. BS 110 may provide communication coverage for a specific geographic area, which is sometimes referred to as a "cell", which may be stationary or may move depending on the location of the mobile BS 110. In some examples, BS 110 may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless communication network 100 through various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1 In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more cells. BS 110 communicates with user equipment (UE) 120a-y (each UE is also individually referred to herein as UE 120 or collectively referred to as UE 120) in a wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile.

[0025] The wireless communication network 100 may also include a relay station (e.g., relay station 110r), also known as a relay, etc., which receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0026] A network controller 130 may couple to a set of BSs 110 and provide coordination and control for these BSs 110. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other (eg, directly or indirectly) via a wireless or wired backhaul.

[0027] Figure 2 Examples of various aspects that can be used to implement the present disclosure (for example, in Figure 1 1 and 120 in the wireless communication network 100. For example, the antenna 252, the processors 266, 258, 264 and / or the controller / processor 280 of the UE 120 may be configured to perform Figure 4Similarly, antenna 234, processors 220, 230, 238 and / or controller / processor 240 of BS 110 may be configured to perform Figure 5 Operation 500.

[0028] At BS 110, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. The processor 220 may process (e.g., encode and symbol map) the data and the control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​the data symbols, control symbols, and / or reference symbols (if applicable), and may provide output symbol streams to modulators (MODs) 232a-232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0029] At UE 120, antennas 252a-252r may receive downlink signals from BS 110 or a parent IAB node, or a child IAB node may receive downlink signals from a parent IAB node, and may provide received signals to demodulators (DEMODs) 254a-254r in a transceiver, respectively. Each demodulator 254 may adjust (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information to a controller / processor 280.

[0030] On the uplink, at the UE 120 or child IAB node, the transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH) or PSSCH) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH) or PSCCH). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by the demodulators 254a-254r in the transceiver (e.g., for SC-FDM, etc.), and sent to the base station 110 or parent IAB node.

[0031] At BS 110 or a parent IAB node, uplink signals from UE 120 may be received by antenna 234, processed by modulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to a data sink 239 and decoded control information to controller / processor 240.

[0032] Controllers / processors 240 and 280 may direct the operation at BS 110 and UE 120, respectively. Controller / processor 240 and / or other processors and modules at BS 110 may perform or direct the execution of processes for the techniques described herein. Controller / processor 280 and / or other processors and modules at UE 120 may perform or direct the execution of processes for the techniques described herein. Memories 242 and 282 may store data and program codes for BS 110 and UE 120, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0033] Example SCELL dormant indication when DRX is not configured for connected mode UE

[0034] Carrier aggregation generally refers to the ability to combine two or more carriers into one data channel to enhance data capacity. In some cases, carrier aggregation may allow a UE to be configured with multiple serving cells. A special serving cell may be referred to as a primary cell (PCell). Other serving cells may be referred to as secondary cells (SCells).

[0035] In New Radio (NR) deployments, a new UE behavior is defined for the active SCell, called SCell dormancy-like behavior. SCell dormancy-like behavior is different from the LTE SCell dormancy state. When the active SCell is configured for dormancy-like behavior, UE activity is reduced on the SCell (e.g., for power saving). For example, when dormancy-like behavior is configured for the SCell, the UE may:

[0036] No PDCCH monitoring is performed;

[0037] No PDSCH reception is performed; and / or

[0038] Reduce CSI / measurement and / or reporting frequency.

[0039] The network can switch the SCell between non-sleep-like behavior and sleep-like behavior. When the SCell is configured for non-sleep-like behavior, the UE fully utilizes the SCell as usual. When multiple SCells are configured for the UE, the sleep indication can be applied to a single SCell or a SCell group.

[0040] In some cases, the UE may be placed in discontinuous reception (DRX) mode to save power. Figure 3 As illustrated in , in DRX mode, the UE goes to sleep to save power and wakes up periodically to monitor the Physical Downlink Control Channel (PDCCH) to find potential scheduled downlink reception and / or uplink transmission for the UE. Typically, if DRX is not configured, the UE is always ready to receive the PDCCH.

[0041] like Figure 3 As illustrated, DRX consists of a sleep portion and a wake-up portion. The wake-up portion is called the "on duration" in which the UE monitors the PDCCH transmission of scheduled data. If a PDCCH (carrying DCI) is detected, the on duration is extended. The duration after the UE wakes up (including the on duration and the extended portion) is called the "active time".

[0042] In NR, a wake-up signal (WUS) is defined, which is monitored by the UE outside of active time. The WUS can be detected with relatively simple receiver components, allowing the UE to remain in a reduced power state. The WUS indicates whether the UE should (more fully) wake up for PDCCH monitoring.

[0043] In some cases, the PDCCH may contain an SCell sleep indication field. If DRX is configured, there are various scenarios for sending such a PDCCH. According to the first scenario (scenario 1), outside of active time, the PDCCH may be sent as a PDCCH WUS. According to the second scenario (scenario 2), within active time, the PDCCH may or may not additionally schedule data.

[0044] The SCell sleep indication field in the PDCCH may indicate sleep (i.e., sleep-like or non-sleep-like) for each SCell separately, or the field may indicate sleep for each SCell group separately (e.g., applying the same behavior to each SCell in the group). In some cases, switching between sleep-like and non-sleep-like behavior may be achieved by switching a bandwidth portion (BWP) between a sleep BWP and a regular BWP that allows full utilization of the SCell.

[0045] In conventional systems (e.g., NR Release 16), how to receive and process the dormancy indication DCI is usually defined only when CDRX is configured for the UE. That is, a DCI field with SCell dormancy indication in DCI formats 0_1 and 1_1 may be provided on the primary cell only during the DRX active time and when the UE is configured with at least two DLBWPs for the SCell.

[0046] However, aspects of the present disclosure provide techniques that may help define UE behavior for SCell dormancy indication when CDRX is not configured for the UE.

[0047] Figure 4 Example operations 400 for wireless communications by a user equipment (UE) in accordance with aspects of the present disclosure are illustrated. For example, operations 400 may be performed by Figure 1 and 2 The UE 120 shown in FIG.

[0048] Operations 400 begin at 402, when the UE is in a first mode associated with continuous physical downlink control (PDCCH) monitoring, receiving an indication of a change in sleep behavior of one or more secondary cells (SCells) or SCell groups from a network entity. At 404, the UE applies the indicated change in sleep behavior.

[0049] Figure 5 Example operations 500 for wireless communications by a network entity are illustrated, which may be considered similar to Figure 4 For example, operation 500 may be performed by UE 120 (executing Figure 4 Operation 400) of communicating Figure 1 and2 The process may be performed by BS110 (e.g., gNB / PCell) shown in FIG.

[0050] Operations 500 begin at 502 by providing an indication of a change in dormancy behavior of one or more secondary cells (SCells) or SCell groups to a user equipment (UE) in a first mode associated with continuous physical downlink control (PDCCH) monitoring. At 504, a network entity applies the indicated change in dormancy behavior.

[0051] You can refer to Figure 6 Call flow diagram to understand Figure 4 and Figure 5 That is, Figure 6 UE executable Figure 4 Operation 400, and PCell can perform Figure 5 Operation 500.

[0052] As illustrated, the UE is in connected mode without CDRX configured. Even so, the PCell is still able to send DCI indicating SCell sleep. The UE applies the indicated sleep behavior (e.g., where one or more of the SCells moves from sleep to non-sleep or from non-sleep to sleep) and communicates accordingly.

[0053] In this way, when CDRX is not configured for the UE, the UE can support switching between sleep behavior and non-sleep behavior. In some cases, the UE can receive a specific DCI format (e.g., DCI format 0_1 ​​or 1_1) that includes a sleep indication field for switching between sleep behavior and non-sleep behavior. The DCI format can be received in a time slot according to the search space set configuration for the specific DCI format.

[0054] like Fig. 7A and 7B As illustrated, updates may be applied to switch between a sleep bandwidth portion (BWP) and a non-sleep bandwidth portion (BWP). Fig. 7A As shown, the non-sleep BWP may or may not be the first non-sleep BWP. Figure 7B As shown, the non-sleep BWP may be a first non-sleep BWP.

[0055] In some cases, when CDRX is not configured, the UE may be configured with a sleep BWP and a non-sleep BWP associated with the sleep behavior and non-sleep behavior of the SCell. The non-sleep BWP may be the first BWP in which the UE operates when the UE switches from the sleep behavior to the non-sleep behavior on the SCell. According to one option (option 1), the UE may be configured with a separate sleep BWP or non-sleep BWP that is different from the sleep BWP and non-sleep BWP when CDRX is configured. According to another option (option 2), the UE may be configured to use the same sleep BWP and non-sleep BWP as when CDRX is configured.

[0056] In some cases, under certain conditions, the SCell dormancy indication field may be present in a specific DCI format (e.g., 0_1 or 1_1). For example, the field may only be present when connected mode DRX is configured for the UE, and when the DCI format is carried by the PDCCH on the primary cell during the DRX active time and the UE is configured with at least two DL BWPs for the SCell. As another example, the field may only be present when connected mode DRX is not configured for the UE, and when the DCI format is carried by the PDCCH on the primary cell and the UE is configured with at least two DL BWPs for the SCell.

[0057] In some cases, UE capability report signaling may be defined to indicate to the network whether the UE supports SCell sleep functionality when CDRX is not configured. The indication of this support may mean that the UE will support receiving DCI format 0_1 ​​or 1_1 containing the "SCell sleep indication" field and is able to apply the indicated behavior (e.g., perform switching between sleep behavior and non-sleep behavior).

[0058] In some cases, when connected mode DRX is not configured for the UE, it may not be necessary for the UE to receive a specific DCI format (e.g., DCI format 2_6) containing the "SCell sleep indication" field. In some cases, for SCell sleep, the UE may only receive a DCI format (e.g., 2_6) containing the "SCell sleep indication" field outside of the DRX active time.

[0059] The techniques described herein can be used for various wireless communication technologies, such as 3GPP Long Term Evolution (LTE), LTE-Advanced (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably.

[0060] A CDMA network may implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network may implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA network may implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (WiFi), IEEE802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP), cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2).

[0061] The technology described herein can be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For the sake of clarity, although this document may use terms commonly associated with 3G, 4G and / or 5G wireless technologies to describe various aspects, various aspects of the present disclosure can be applied to communication systems based on other generations.

[0062] New Radio (NR) is an emerging wireless communication technology being developed in conjunction with the 5G Technology Forum (5GTF). NR access (e.g., 5G NR) can support a variety of wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80MHz or higher), millimeter wave (mmW) targeting high carrier frequency (e.g., 25GHz or higher), massive machine type communication MTC (mMTC) targeting non-backward compatible MTC technology, and / or mission critical services targeting ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet corresponding quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.

[0063] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) and / or a NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the terms "cell" and BS, next-generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier or transmit receive point (TRP) can be used interchangeably. The BS can provide communication coverage for macro cells, pico cells, femto cells and / or other types of cells. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access to UEs with service subscriptions. A pico cell can cover a relatively small geographic area and can allow unrestricted access to UEs with service subscriptions. A femto cell can cover a relatively small geographic area (e.g., a home) and can allow UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.) to have limited access. A BS for a macro cell can be referred to as a macro BS. A BS for a pico cell can be referred to as a pico BS. A BS for a femto cell can be referred to as a femto BS or a home BS.

[0064] UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device or medical equipment, biometric sensor / device, wearable device such as smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.), entertainment device (e.g., music device, video device, satellite radio device, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, global positioning system device, or any other suitable device configured to communicate via wireless or wired medium. Some UEs may be considered as machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node can provide, for example, a connection to a network (e.g., a wide area network such as the Internet or a cellular network) or to a network via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0065] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, frequency bins, etc. Each subcarrier can be modulated with data. Typically, modulation symbols are sent in the frequency domain using OFDM and in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of the subcarriers can be 15kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal fast Fourier transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, a subband may cover 1.8 MHz (eg, 6 RBs), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively.In LTE, the basic transmission time interval (TTI) or packet duration is a 1 ms subframe.

[0066] NR can utilize OFDM with CP on both the uplink and downlink, and includes support for half-duplex operation using TDD. In NR, the subframe is still 1ms, but the basic TTI is called a time slot. Depending on the subcarrier spacing, the subframe contains a variable number of time slots (e.g., 1, 2, 4, 8, 16, ... time slots). NR RB is 12 continuous frequency subcarriers. NR can support a basic subcarrier spacing of 15kHz, and other subcarrier spacings can be defined relative to the basic subcarrier spacing, such as 30kHz, 60kHz, 120kHz, 240kHz, etc. Symbol and time slot lengths scale with subcarrier spacing. The CP length also depends on the subcarrier spacing. Beamforming can be supported, and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. In some examples, the MIMO configuration in DL can support up to 8 transmit antennas, with multi-layer DL transmissions of up to 8 streams and up to 2 streams per UE. In some examples, multi-layer transmissions with up to 2 streams per UE can be supported. Aggregation of multiple cells with up to 8 serving cells can be supported.

[0067] In some examples, access to the air interface can be scheduled. The scheduling entity (e.g., BS) allocates resources for communicating between some or all devices and apparatuses within its service area or cell. The scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, the subordinate entity utilizes the resources assigned by the scheduling entity. The base station is not the only entity that can be used as a scheduling entity. In some examples, the UE may act as a scheduling entity, and may schedule resources for one or more subordinate entities (e.g., one or more other UEs), and the other UEs may utilize the resources scheduled by the UE for wireless communication. In some examples, the UE may act as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In the mesh network example, the UE may communicate directly with each other in addition to communicating with the scheduling entity.

[0068] In some examples, two or more subordinate entities (e.g., UEs) can communicate with each other using sidelink signals. Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical grids, and / or various other suitable applications. Generally, a sidelink signal may refer to a signal that is transmitted from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even though the scheduling entity may be used for scheduling and / or control purposes. In some examples, licensed spectrum may be used to communicate sidelink signals (unlike wireless local area networks that typically use unlicensed spectrum).

[0069] The method disclosed herein includes one or more steps or actions for implementing the method. The method steps and / or actions may be interchangeable with each other without departing from the scope of the claims. That is, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the claims.

[0070] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of: a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

[0071] As used herein, the term "determining" includes a variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, etc. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. Also, "determining" may include resolving, selecting, choosing, establishing, etc.

[0072] The previous description is provided to enable a person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims, wherein, unless otherwise stated, reference to an element in the singular is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, none of the contents disclosed herein are intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. No claim element should be interpreted according to the provisions of 35 U.S.C. § 112 (f), unless the element is explicitly stated with the phrase "unit for...", or in the case of a method claim, the phrase "step for..." is used to state the element.

[0073] The various operations of the above method can be performed by any suitable unit capable of performing the corresponding functions. The unit may include various hardware and / or software components and / or modules, including but not limited to: circuits, application specific integrated circuits (ASICs) or processors. Generally, where there are operations illustrated in the figure, those operations may have corresponding unit plus functional components.

[0074] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors with a DSP core, or any other such configuration.

[0075] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnecting buses and bridges. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In the user terminal 120 (see Figure 1 ), a user interface (e.g., a keypad, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described further. The processor may be implemented with one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits capable of executing software. Those skilled in the art will recognize how best to implement the described functionality of the processing system, which depends on the specific application and the overall design constraints imposed on the entire system. For example, in some cases, such as Figure 2 A processor such as the one shown in FIG. 1 may be configured to perform Figure 4 Operation 400 and / or Figure 5 Operation 500.

[0076] If implemented in software, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Software should be broadly interpreted as representing instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, including any medium that facilitates the transfer of computer programs from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read information from the storage medium and can write information to the storage medium. In an alternative, the storage medium may be integrated into the processor. As an example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or in addition, a machine-readable medium or any part thereof may be integrated into a processor, such as in the case of having a cache and / or a general register stack. As an example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. The machine-readable medium may be included in a computer program product.

[0077] A software module may include a single instruction or many instructions, and may be distributed over several different code segments, in different programs, and across multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a transmission module and a reception module. Each software module may reside in a single storage device or may be distributed over multiple storage devices. As an example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During the execution of a software module, a processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register stack for execution by the processor. When the functions of a software module are mentioned below, it will be understood that such functions are implemented by the processor when instructions from the software module are executed.

[0078] Additionally, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared (IR), radio and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio and microwave are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Optical disks, where magnetic disks typically reproduce data magnetically, and optical disks reproduce data optically with lasers. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Additionally, for other aspects, computer-readable media may include transitory computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0079] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having stored thereon (and / or encoded thereon) instructions, the instructions being executable by one or more processors to perform the operations described herein. For example, for performing the operations described herein and Figure 4-5 Instructions for the operations illustrated in .

[0080] In addition, it should be understood that the modules and / or other appropriate units for performing the methods and techniques described herein can be downloaded and / or otherwise obtained by the user terminal and / or base station, as applicable. For example, such a device can be coupled to a server to enable the transmission of the units for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage unit (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.), so that the user terminal and / or base station can obtain the various methods after coupling or providing the storage unit to the device. In addition, any other suitable technology for providing the methods and techniques described herein to a device can be utilized.

[0081] It is to be understood, however, that the claims are not limited to the precise configuration and components illustrated above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a user equipment UE, comprising: When the UE is in a first mode associated with continuous physical downlink control (PDCCH) monitoring, receiving a first indication of a change in dormancy behavior of one or more secondary cells (SCells) or SCell groups from a network entity; and Apply the indicated changes to the sleep behavior, wherein the first mode corresponds to a mode in which a connected mode discontinuous reception (CDRX) is not configured for the UE; Wherein, when CDRX is not configured for the UE, the UE is configured with at least one sleep bandwidth part BWP and at least one non-sleep BWP for SCell associated with the sleep behavior and the non-sleep behavior; wherein the at least one non-dormant BWP comprises a first non-dormant BWP in which the UE operates when switching from a dormant behavior to a non-dormant behavior on the associated SCell; and The dormant BWP and the first non-dormant BWP are the same as the dormant BWP and the first non-dormant BWP when CDRX is configured for the UE.

2. The method according to claim 1, wherein: The first indication is received via a DCI in a specific downlink control information (DCI) format, the specific DCI format including a sleep indication field for switching between a sleep behavior and a non-sleep behavior.

3. The method according to claim 2, further comprising: A second indication is reported to the network entity, where the second indication indicates whether the UE supports receiving the first indication using the DCI in the specific DCI format.

4. The method according to claim 2, wherein: The DCI is received in a time slot according to a search space set configuration for the specific DCI format.

5. The method according to claim 1, wherein: The sleep BWP and the first non-sleep BWP are configured separately for each SCell.

6. The method according to claim 2, wherein The dormancy indication field is present in the specific DCI format only when one or more conditions are met.

7. The method according to claim 6, wherein: When CDRX is not configured for the UE, the dormancy indication field is present only when the specific DCI format is carried by the PDCCH on the primary cell and the UE is configured with at least two downlink bandwidth parts BWP for the SCell.

8. The method according to claim 7, wherein: When CDRX is configured for the UE, the dormancy indication field is present only when the specific DCI format is carried by the PDCCH on the primary cell during the DRX active time and the UE is configured with at least two DL BWPs for the SCell.

9. The method of claim 3, wherein the second indication comprises an indication regarding: The UE supports receiving a DCI with a dormancy indication field when CDRX is not configured for the UE; and The UE supports applying the change in behavior indicated by the dormancy indication field.

10. The method according to claim 3, wherein the second indication indicates whether the UE supports using DCI format 0_1 ​​or 1_1 to receive SCell sleep indication.

11. A method for wireless communication by a network entity, comprising: providing a first indication of a change in dormancy behavior of one or more secondary cells (SCells) or SCell groups to a user equipment (UE) in a first mode associated with continuous physical downlink control (PDCCH) monitoring; and Apply the indicated changes to the sleep behavior, wherein the first mode corresponds to a mode in which a connected mode discontinuous reception (CDRX) is not configured for the UE; Wherein, when CDRX is not configured for the UE, the UE is configured with at least one sleep bandwidth part BWP and at least one non-sleep BWP for SCell associated with the sleep behavior and the non-sleep behavior; wherein the at least one non-dormant BWP comprises a first non-dormant BWP in which the UE operates when switching from a dormant behavior to a non-dormant behavior on the associated SCell; and The dormant BWP and the first non-dormant BWP are the same as the dormant BWP and the first non-dormant BWP when CDRX is configured for the UE.

12. The method according to claim 11, wherein: The first indication is provided via a DCI in a specific downlink control information (DCI) format, the specific DCI format including a sleep indication field for switching between a sleep behavior and a non-sleep behavior.

13. The method according to claim 12, further comprising: A second indication is received from the UE, where the second indication indicates whether the UE supports receiving the first indication using the DCI in the specific DCI format.

14. The method of claim 12, wherein: The DCI is provided in a time slot according to a search space set configuration for the specific DCI format.

15. The method according to claim 11, wherein: The sleep BWP and the first non-sleep BWP are configured separately for each SCell.

16. The method according to claim 12, wherein The dormancy indication field is present in the specific DCI format only when one or more conditions are met.

17. The method of claim 16, wherein: When CDRX is not configured for the UE, the network entity includes the dormancy indication field only when the specific DCI format is carried by a PDCCH on a primary cell and the UE is configured with at least two downlink bandwidth parts BWP for a SCell.

18. The method of claim 17, wherein: When configuring CDRX for the UE, the network entity includes the dormancy indication field only when the specific DCI format is carried by the PDCCH on the primary cell during the DRX active time and the UE is configured with at least two DL BWPs for the SCell.

19. The method of claim 12, wherein providing the first indication comprises: The DCI including the dormancy indication field is sent only after receiving an indication from the UE that the UE supports receiving DCI with the dormancy indication field and applying the change of behavior indicated by the dormancy indication field when CDRX is not configured for the UE.

20. An apparatus for wireless communication by a user equipment UE, comprising: means for receiving, from a network entity, a first indication of a change in dormancy behavior of one or more secondary cells (SCells) or SCell groups when the UE is in a first mode associated with continuous physical downlink control (PDCCH) monitoring; as well as a unit for applying the indicated change in sleep behavior, wherein the first mode corresponds to a mode in which a connected mode discontinuous reception (CDRX) is not configured for the UE; Wherein, when CDRX is not configured for the UE, the UE is configured with at least one sleep bandwidth part BWP and at least one non-sleep BWP for SCell associated with the sleep behavior and the non-sleep behavior; wherein the at least one non-dormant BWP comprises a first non-dormant BWP in which the UE operates when switching from a dormant behavior to a non-dormant behavior on the associated SCell; and The dormant BWP and the first non-dormant BWP are the same as the dormant BWP and the first non-dormant BWP when CDRX is configured for the UE.

21. The device according to claim 20, wherein: The means for receiving includes means for receiving the first indication via a DCI in a specific downlink control information (DCI) format, the specific DCI format including a sleep indication field for switching between sleep behavior and non-sleep behavior.

22. The apparatus according to claim 21, further comprising: and means for reporting a second indication to the network entity, the second indication indicating whether the UE supports receiving the first indication using the DCI in the specific DCI format.

23. An apparatus for wireless communication by a network entity, comprising: means for providing a first indication of a change in dormancy behavior of one or more secondary cells SCells or SCell groups to a user equipment UE in a first mode associated with continuous physical downlink control PDCCH monitoring; as well as a unit for applying the indicated change in sleep behavior, wherein the first mode corresponds to a mode in which a connected mode discontinuous reception (CDRX) is not configured for the UE; Wherein, when CDRX is not configured for the UE, the UE is configured with at least one sleep bandwidth part BWP and at least one non-sleep BWP for SCell associated with the sleep behavior and the non-sleep behavior; wherein the at least one non-dormant BWP comprises a first non-dormant BWP in which the UE operates when switching from a dormant behavior to a non-dormant behavior on the associated SCell; and The dormant BWP and the first non-dormant BWP are the same as the dormant BWP and the first non-dormant BWP when CDRX is configured for the UE.

24. The device according to claim 23, wherein: The means for providing includes means for providing the first indication via a DCI in a specific downlink control information (DCI) format, the specific DCI format including a sleep indication field for switching between sleep behavior and non-sleep behavior.

25. The apparatus according to claim 24, further comprising: and means for receiving a second indication from the UE, the second indication indicating whether the UE supports receiving the first indication using the DCI in the specific DCI format.

26. An apparatus for wireless communication by a user equipment (UE), comprising at least one processor, wherein the at least one processor is configured to cause the apparatus to perform the following operations: When the UE is in a first mode associated with continuous physical downlink control (PDCCH) monitoring, receiving a first indication of a change in dormancy behavior of one or more secondary cells (SCells) or SCell groups from a network entity; and Apply the indicated changes to the sleep behavior, in, The first mode corresponds to a mode in which connected mode discontinuous reception (CDRX) is not configured for the UE; Wherein, when CDRX is not configured for the UE, the UE is configured with at least one sleep bandwidth part BWP and at least one non-sleep BWP for SCell associated with the sleep behavior and the non-sleep behavior; wherein the at least one non-dormant BWP comprises a first non-dormant BWP in which the UE operates when switching from a dormant behavior to a non-dormant behavior on the associated SCell; and The dormant BWP and the first non-dormant BWP are the same as the dormant BWP and the first non-dormant BWP when CDRX is configured for the UE.

27. The apparatus of claim 26, wherein the at least one processor is configured to cause the apparatus to receive the first indication via a downlink control information (DCI) format of DCI, the specific DCI format comprising a sleep indication field for switching between sleep behavior and non-sleep behavior.

28. The apparatus of claim 27, wherein the at least one processor is further configured to cause the apparatus to: A second indication is reported to the network entity, where the second indication indicates whether the UE supports receiving the first indication using the DCI in the specific DCI format.

29. The apparatus according to claim 28, wherein the second indication indicates whether the UE supports using DCI format 0_1 ​​or 1_1 to receive SCell sleep indication.

30. An apparatus for wireless communication by a network entity, comprising at least one processor, the at least one processor being configured to cause the apparatus to perform the following operations: providing a first indication of a change in dormancy behavior of one or more secondary cells (SCells) or SCell groups to a user equipment (UE) in a first mode associated with continuous physical downlink control (PDCCH) monitoring; and Apply the indicated changes to the sleep behavior, in, The first mode corresponds to a mode in which connected mode discontinuous reception (CDRX) is not configured for the UE; Wherein, when CDRX is not configured for the UE, the UE is configured with at least one sleep bandwidth part BWP and at least one non-sleep BWP for SCell associated with the sleep behavior and the non-sleep behavior; wherein the at least one non-dormant BWP comprises a first non-dormant BWP in which the UE operates when switching from a dormant behavior to a non-dormant behavior on the associated SCell; and The dormant BWP and the first non-dormant BWP are the same as the dormant BWP and the first non-dormant BWP when CDRX is configured for the UE.

31. The device according to claim 30, wherein The at least one processor is configured to cause the apparatus to provide the first indication via a downlink control information (DCI) format of DCI, the specific DCI format including a sleep indication field for switching between sleep behavior and non-sleep behavior.

32. The apparatus of claim 31 , wherein the at least one processor is further configured to cause the apparatus to: A second indication is received from the UE, where the second indication indicates whether the UE supports receiving the first indication using the DCI in the specific DCI format.

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