Triggering primary receiver

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. An apparatus and method for triggering a primary receiver (MR). A method of a user equipment (UE) in a wireless communication system is provided. The method includes: receiving a low power wake-up signal (LP-WUS) using a low power receiver (LR); determining, based on the LP-WUS, an indication as to whether to trigger a transceiver of the UE to receive a physical downlink control channel (PDCCH); and receiving, using the transceiver, the PDCCH based on the indication.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to apparatus and methods for triggering a primary receiver (MR). Background Art

[0002] Wireless communication has been one of the most successful innovations in modern history. The number of subscribers to wireless communication services recently exceeded 5 billion and continues to grow rapidly. Due to the increasing popularity of smartphones and other mobile data devices such as tablets, "notepad" computers, netbooks, e-book readers, and machine-type devices among consumers and enterprises, the demand for wireless data traffic is rapidly increasing. To meet the high growth in mobile data traffic and support new applications and deployments, improvements in radio interface efficiency and coverage are crucial. To meet the increased demand for wireless data services since the deployment of 4G communication systems, and to enable a variety of vertical applications, 5G communication systems have been developed and are currently being deployed.

[0003] Fifth-generation (5G) mobile communication technology defines a wide frequency band, enabling high transmission rates and new services. It is achievable not only in "sub-6 GHz" frequency bands such as 3.5 GHz, but also in "above 6 GHz" frequency bands, known as mmWave (millimeter waves), including 28 GHz and 39 GHz. Furthermore, consideration is being given to implementing 6G mobile communication technology (referred to as "super 5G systems") in terahertz frequency bands (e.g., the 95 GHz to 3 THz band) in order to achieve transmission rates fifty times faster than 5G mobile communication technology and ultra-low latency one-tenth that of 5G mobile communication technology.

[0004] At the start of the development of 5G mobile communication technology, in order to support services and meet performance requirements related to enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC), standardization is already underway on the following items: beamforming and massive MIMO for mitigating radio wave path loss and increasing radio wave transmission range in mmWave, parameter sets supporting dynamic operation for efficient utilization of mmWave resources and time slot formats (e.g., operation of multiple subcarrier spacings), initial access technology for supporting multi-beam transmission and wideband, definition and operation of BWP (bandwidth part), new channel coding methods (such as LDPC (low-density parity-check) codes for large-scale data transmission and polar codes for highly reliable transmission of control information), L2 preprocessing, and network slicing for providing dedicated networks dedicated to specific services.

[0005] Currently, in view of the services to be supported by 5G mobile communication technologies, discussions are underway on improvements and performance enhancements of initial 5G mobile communication technologies, and there is already physical layer standardization on technologies such as: V2X (Vehicle-to-Everything), for assisting driving determination of autonomous vehicles based on information about the position and status of vehicles transmitted by vehicles and for enhancing user convenience; NR-U (New Radio Unlicensed), for system operation intended to comply with various regulatory requirements in unlicensed frequency bands; NR UE power saving; Non-Terrestrial Network (NTN), which is UE satellite direct communication for providing coverage in areas where communication with terrestrial networks is unavailable; and positioning.

[0006] Furthermore, in the air interface architecture / protocol, there is ongoing standardization of technologies such as the Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing nodes for network service area expansion by supporting wireless backhaul links and access links in an integrated manner, mobility enhancements including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access (two-step RACH for NR) for simplifying the random access procedure. There is also ongoing standardization of 5G baseline architecture (e.g., service-based architecture or service-based interface) for combining network function virtualization (NFV) and software-defined networking (SDN) technologies, as well as system architecture / services for mobile edge computing (MEC) for receiving services based on UE location.

[0007] With the commercialization of 5G mobile communication systems, the already exponentially growing number of connected devices will be connected to the communication network, and accordingly, it is expected that enhanced functionality and performance of 5G mobile communication systems and the integrated operation of connected devices will become necessary. To this end, new research related to extended reality (XR) is being planned to effectively support AR (augmented reality), VR (virtual reality), MR (mixed reality), etc., improving 5G performance and reducing complexity by utilizing artificial intelligence (AI) and machine learning (ML), AI service support, meta-service support, and drone communications. Summary of the Invention

[0008] Solution to the problem

[0009] A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver; a low power receiver (LR) configured to receive a low power wake-up signal (LP-WUS); and a processor operably coupled to the transceiver and the LR, the processor configured to determine, based on the LP-WUS, an indication as to whether to trigger the transceiver to receive a physical downlink control channel (PDCCH), wherein the transceiver is further configured to receive the PDCCH based on the indication.

[0010] A method for a user equipment (UE) in a wireless communication system, the method comprising: receiving a low power wake-up signal (LP-WUS) using a low power receiver (LR); determining an indication of whether to trigger a transceiver of the UE to receive a physical downlink control channel (PDCCH) based on the LP-WUS; and receiving the PDCCH using the transceiver based on the indication.

[0011] A base station (BS) in a wireless communication system, the BS comprising: a processor operably configured to: determine an indication as to whether a physical downlink control channel (PDCCH) is to be received by a user equipment (UE); and determine to include the indication in a low power wake-up signal (LP-WUS); and a transceiver operably coupled to the processor, the transceiver configured to: transmit the LP-WUS; and transmit the PDCCH when the indication in the LP-WUS indicates that the PDCCH is to be received by the UE.

[0012] A method performed by a base station (BS) in a wireless communication system, the method comprising: determining an indication as to whether a physical downlink control channel (PDCCH) is to be received by a user equipment (UE); determining to include the indication in a low power wake-up signal (LP-WUS); transmitting the LP-WUS; and transmitting the PDCCH when the indication in the LP-WUS indicates that the PDCCH is to be received by the UE. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts:

[0014] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown;

[0015] Figure 2 An example gNodeB (gNB) according to an embodiment of the present disclosure is shown;

[0016] Figure 3 An example UE according to an embodiment of the present disclosure is shown;

[0017] Figure 4A and 4B shows examples of wireless transmit and receive paths according to an embodiment of the present disclosure;

[0018] Figure 5 An example of a transmitter structure for beamforming according to an embodiment of the present disclosure is shown;

[0019] Figure 6 A diagram illustrating an explicit triggering of MR according to an embodiment of the present disclosure is shown;

[0020] Figure 7 a graph illustrating application delay according to an embodiment of the present disclosure; and

[0021] Figure 8 A flow chart illustrating an example UE procedure for triggering a transition from using LR to using MR according to an embodiment of the present disclosure is shown.

[0022] Figure 9 The structure of a UE according to an embodiment of the present disclosure is shown.

[0023] Figure 10 The structure of a base station according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0024] The present disclosure relates to triggered MR.

[0025] In one embodiment, a user equipment (UE) in a wireless communication system is provided. The UE includes a transceiver; a low power receiver (LR) configured to receive a low power wake-up signal (LP-WUS); and a processor operably coupled to the transceiver and the LR. The processor is configured to determine, based on the LP-WUS, an indication as to whether to trigger the transceiver to receive a physical downlink control channel (PDCCH). The transceiver is further configured to receive the PDCCH based on the indication.

[0026] In another embodiment, a method for a UE in a wireless communication system is provided, comprising: receiving a LP-WUS using a LR; determining an indication of whether to trigger a transceiver of the UE to receive a PDCCH based on the LP-WUS; and receiving the PDCCH using the transceiver based on the indication.

[0027] In yet another embodiment, a base station (BS) in a wireless communication system is provided. The BS includes a processor operatively configured to determine an indication of whether a PDCCH is to be received by a UE and to include the indication in a LP-WUS. A transceiver operatively coupled to the processor is configured to transmit the LP-WUS and transmit the PDCCH when the indication in the LP-WUS indicates that the PDCCH is to be received by the UE.

[0028] Before proceeding with the detailed description below, it may be beneficial to set forth the definitions of certain words and phrases used throughout this patent document. The term "coupling" and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether these elements are in physical contact with each other. The terms "send," "receive," and "communicate," and their derivatives, encompass both direct and indirect communication. The terms "include," "comprise," and their derivatives, mean, but are not limited to. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives mean to include, be included within, be interconnected with, include, be contained within, be connected to or be connected with, be coupled to or be coupled with, be able to communicate with, collaborate with, be interlaced, juxtaposed, be close to, be bound to or be bound with, have, have the property of, have a relationship to or with, etc. The term "controller" means any device, system, or part thereof that controls at least one operation. Such a controller can be implemented in hardware or a combination of hardware and software and / or firmware. It should be noted that the functions associated with any particular controller can be centralized or distributed, whether local or remote. The phrase "at least one of" when used with a list of items means that different combinations of one or more of the listed items can be used, and that only one of the items in the list may be required. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A, B, and C.

[0029] Furthermore, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed of computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, related data, or portions thereof, suitable for implementation in suitable computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as read-only memory (ROM), random-access memory (RAM), hard drives, compact disks (CDs), digital video disks (DVDs), or any other type of memory. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that transmit transitory electrical or other signals. Non-transitory computer-readable media includes both media capable of permanently storing data and media capable of storing data and later rewriting it, such as rewritable optical disks or erasable memory devices.

[0030] Definitions for certain other words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

[0031] Discussed below Figures 1 to 8 The various embodiments used to describe the principles of the present disclosure in this patent document are intended to be illustrative only and should not be construed in any way to limit the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure can be implemented in any suitably arranged system or device.

[0032] In order to meet the demand for wireless data services that has increased since the deployment of 4G communication systems, and to realize various vertical applications, 5G / NR communication systems have been developed and are currently being deployed. 5G / NR communication systems are implemented in higher frequency (mmWave) bands (e.g., 28 GHz or 60 GHz bands) to achieve higher data rates, or in lower frequency bands (e.g., 6 GHz) to achieve robust coverage and mobility support. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are discussed in 5G / NR communication systems.

[0033] Furthermore, in 5G / NR communication systems, system network improvements are being developed based on advanced small cells, cloud radio access networks (RANs) ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), and receiver-side interference cancellation.

[0034] The discussion of 5G systems and the frequency bands associated therewith is provided for reference, as certain embodiments of the present disclosure may be implemented in 5G systems. However, the present disclosure is not limited to 5G systems or the frequency bands associated therewith, and embodiments of the present disclosure may be used in conjunction with any frequency band. For example, aspects of the present disclosure may also be applied to the deployment of 5G communication systems, 6G, or even later versions that may utilize terahertz (THz) frequency bands.

[0035] The following documents and standard descriptions are hereby incorporated by reference into this disclosure as if fully set forth herein: [1] 3GPP TS 38.211 v17.1.0, “NR; Physical channels and modulation;” [2] 3GPP TS 38.212 v17.1.0, “NR; Multiplexing and channel coding;” [3] 3GPP TS 38.213 v17.1.0, “NR; Physical layer procedures for control;” [4] 3GPP TS 38.214 v17.1.0, “NR; Physical layer procedures for data;” and [5] 3GPP TS 38.331 v17.1.0, “NR; Radio Resource Control (RRC) protocol specification”

[0036] The following Figure 1-Figure 3 Various embodiments are described that are implemented in a wireless communication system and utilizing Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques. Figure 1-Figure 3 The description is not meant to imply physical or architectural limitations to how different embodiments may be implemented. Different embodiments of the disclosure may be implemented in any suitably arranged communications system.

[0037] Figure 1 An example wireless network 100 is shown in accordance with an embodiment of the present disclosure. Figure 1 The embodiment of the wireless network 100 shown is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0038] like Figure 1 As shown, wireless network 100 includes gNB 101 (e.g., base station, BS), gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0039] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipment (UEs) within gNB 102's coverage area 120. The first plurality of UEs includes UE 111, which may be located in a small business; UE 112, which may be located in an enterprise; UE 113, which may be a WiFi hotspot; UE 114, which may be located in a first residence; UE 115, which may be located in a second residence; and UE 116, which may be a mobile device such as a cellular phone, a wireless laptop, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within gNB 103's coverage area 125. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 may communicate with each other and with UEs 111-116 using 5G / NR, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), WiMAX, WiFi, or other wireless communication technologies.

[0040] Depending on the network type, the term "base station" or "BS" can refer to any component (or collection of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission-reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G / NR base station (gNB), a macro cell, a femto cell, a WiFi access point (AP), or other wireless enabling devices. A base station can provide wireless access according to one or more wireless communication protocols (e.g., 5G / NR Third Generation Partnership Project (3GPP) NR, Long Term Evolution (LTE), LTE Advanced (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc.). For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to a network infrastructure component that provides wireless access to a remote terminal. In addition, depending on the network type, the term "user equipment" or "UE" can refer to any component, such as a "mobile station," "subscriber station," "remote terminal," "wireless terminal," "reception point," or "user equipment." For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or what is generally considered a stationary device (such as a desktop computer or vending machine).

[0041] Dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as approximately circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with a gNB, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0042] As described in more detail below, one or more of the UEs 111-116 include circuitry, programming, or a combination thereof for triggering MR.In certain embodiments, one or more of the BSs 101-103 include circuitry, programming, or a combination thereof to support triggering MR.

[0043] although Figure 1 An example of a wireless network is shown, but Figure 1 Various changes may be made. For example, wireless network 100 may include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 may communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Furthermore, gNBs 101, 102, and / or 103 may provide access to other or additional external networks, such as an external telephone network or other type of data network.

[0044] Figure 2 An example gNB 102 is shown in accordance with an embodiment of the present disclosure. Figure 2 The embodiment of the gNB 102 shown in FIGURE 1 is for illustration only, and Figure 1 gNBs 101 and 103 may have the same or similar configurations. However, gNBs have a variety of configurations, and Figure 2 The scope of this disclosure is not limited to any particular implementation of the gNB.

[0045] like Figure 2 As shown, gNB 102 includes multiple antennas 205a-205n, multiple transceivers 210a-210n, a controller / processor 225, memory 230, and a backhaul or network interface 235.

[0046] The transceivers 210a-210n receive incoming radio frequency (RF) signals from the antennas 205a-205n, such as signals transmitted by UEs in the wireless network 100. The transceivers 210a-210n downconvert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are processed by receive (RX) processing circuitry in the transceivers 210a-210n and / or the controller / processor 225, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The controller / processor 225 may further process the baseband signals.

[0047] Transmit (TX) processing circuitry in the transceivers 210a-210n and / or the controller / processor 225 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from the controller / processor 225. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The transceivers 210a-210n upconvert the baseband or IF signals into RF signals that are transmitted via the antennas 205a-205n.

[0048] The controller / processor 225 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 225 may control the reception of uplink (UL) channel signals and the transmission of downlink (DL) channel signals by the transceivers 210a-210n according to well-known principles. The controller / processor 225 may also support additional functionality, such as more advanced wireless communication functionality. For example, the controller / processor 225 may support beamforming or directional routing operations, in which outgoing / incoming signals from / to the multiple antennas 205a-205n are weighted differently to effectively steer the outgoing signals in a desired direction. As another example, the controller / processor 225 may support methods for triggering MR. The controller / processor 225 may support any of a variety of other functions within the gNB 102.

[0049] The controller / processor 225 can also execute programs and other processes, such as the process that triggers MR, that reside in the memory 230. The controller / processor 225 can move data into or out of the memory 230 as needed by the executing process.

[0050] The controller / processor 225 is also coupled to a backhaul or network interface 235. The backhaul or network interface 235 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. The interface 235 can support communication over any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G / NR, LTE, or LTE-A), the interface 235 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 235 can allow the gNB 102 to communicate over a wired or wireless local area network or with a larger network (such as the Internet) via a wired or wireless connection. The interface 235 includes any suitable structure that supports communication over a wired or wireless connection, such as Ethernet or a transceiver.

[0051] Memory 230 is coupled to controller / processor 225. A portion of memory 230 may include RAM, and another portion of memory 230 may include flash memory or other ROM.

[0052] although Figure 2 An example of a gNB 102 is shown, but the Figure 2 For example, gNB 102 may include any number of Figure 2 Each component shown in . In addition, Figure 2 The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs.

[0053] Figure 3 An example UE 116 is shown according to an embodiment of the present disclosure. Figure 3 The embodiment of UE 116 shown is for illustration only, and Figure 1 UEs 111-115 may have the same or similar configurations. However, UEs have a variety of configurations, and Figure 3 The scope of this disclosure is not limited to any particular implementation of the UE.

[0054] like Figure 3 As shown, UE 116 includes antenna 305, transceiver 310, and microphone 320. UE 116 also includes speaker 330, processor 340, input / output (I / O) interface (IF) 345, input 350, display 355, and memory 360. Memory 360 includes operating system (OS) 361 and one or more applications 362.

[0055] Transceiver 310 receives incoming RF signals from antenna 305, transmitted by a gNB in ​​wireless network 100. Transceiver 310 downconverts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is processed by RX processing circuitry within transceiver 310 and / or processor 340, which filters, decodes, and / or digitizes the baseband or IF signal to generate a processed baseband signal. The RX processing circuitry transmits the processed baseband signal to speaker 330 (e.g., for voice data) or to processor 340 for processing (e.g., for web browsing data).

[0056] The TX processing circuitry in the transceiver 310 and / or processor 340 receives analog or digital voice data from the microphone 320, or receives other outgoing baseband data (such as web data, email, or interactive video game data) from the processor 340. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The transceiver 310 up-converts the baseband or IF signal into an RF signal that is transmitted via the antenna 305.

[0057] The processor 340 can include one or more processors or other processing devices and execute the OS 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the processor 340 can control the transceiver 310 to receive DL channel signals and transmit UL channel signals according to well-known principles. In some embodiments, the processor 340 includes at least one microprocessor or microcontroller.

[0058] Processor 340 is also capable of executing other processes and programs residing in memory 360. For example, processor 340 can execute the processes for triggering MR as described in embodiments of the present disclosure. Processor 340 can move data into or out of memory 360 as needed to execute the processes. In some embodiments, processor 340 is configured to execute application 362 based on OS 361 or in response to signals received from a gNB or operator. Processor 340 is also coupled to I / O interface 345, which provides UE 116 with the ability to connect to other devices such as laptops and handheld computers. I / O interface 345 is the communication path between these accessories and processor 340.

[0059] The processor 340 is also coupled to an input 350 including, for example, a touch screen, a keyboard, etc., and a display 355. An operator of the UE 116 can use the input 350 to enter data into the UE 116. The display 355 can be a liquid crystal display, a light emitting diode display, or other display capable of presenting text and / or at least limited graphics, such as from a website.

[0060] Memory 360 is coupled to processor 340. A portion of memory 360 may include random access memory (RAM), and another portion of memory 360 may include flash memory or other read-only memory (ROM).

[0061] In various embodiments, transceiver 310 includes or is at least one LR 312 and at least one MR 314. For example, as discussed in more detail below, LR 312 can be configured or used to receive low-power signals (e.g., LP-WUS), for example, when UE 116 is in a sleep state (e.g., an ultra-deep sleep state, such as discussed in more detail below) and MR 314 is powered off or in a low-power state. For example, in some embodiments, LR 312 can be a component of transceiver 310 that is used or turned on when the UE is in the sleep state, while MR 314 is a transceiver that is used when the UE is not in the sleep state. In another example, in other embodiments, LR 312 can be a separate or distinct receiver from transceiver 310, with transceiver 310 being MR 314 used for normal receive operations when UE 116 is not in the sleep state.

[0062] Similarly, in such embodiments, processor 340 includes or is at least one of a low-power processor (LP) 342 and a main processor (MP) 344. For example, in some embodiments, LR 312 and MR 314 can be connected to and / or controlled by LP 342 and MP 344, respectively, which are separate and / or independent processors. In these embodiments, LP 342 can operate in a lower power state than MP 344, such that when the UE is in a sleep state, MP 344 can be powered off or in a low-power state while LP 342 can process any signals received by LR 312 (e.g., such as LP-WUS). In these embodiments, the operation of LP 342 can consume less power than the normal operation of MP 344, thereby conserving power while UE 116 is in the sleep state while maintaining the ability of UE 116 to receive and process signals. In other embodiments, the LP 342 and the MP 344 may be components of the processor 340, wherein the LR 312 and the MR 314 may be connected to and / or controlled by the LP 342 and the MP 344, respectively. In these embodiments, when the UE 116 is in the sleep state, the MP 344 component of the processor 340 is powered off or in a low-power state, and the LP 342 component operates to process signals (e.g., such as LP-WUS) received by the LR 312. In these embodiments, the operation of the LP 342 component of the processor 340 may consume less power than the normal operation of the processor 340 (including the operation of the MP 344 component), thereby conserving power for the UE 116 in the sleep state while maintaining the ability of the UE 116 to receive and process signals.

[0063] although Figure 3 An example of a UE 116 is shown, but the Figure 3 Make various changes. For example, Figure 3 Various components in can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, processor 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). In another example, transceiver 310 can include any number of transceivers and signal processing chains and can be connected to any number of antennas. In addition, although Figure 3 The UE 116 is shown configured as a mobile phone or smartphone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0064] Figure 4A and Figure 4BExamples of wireless transmit and receive paths 400 and 450, respectively, according to embodiments of the present disclosure are shown. For example, transmit path 400 may be described as being implemented in a gNB (such as gNB 102), while receive path 450 may be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 450 may be implemented in a gNB and transmit path 400 may be implemented in a UE. In some embodiments, receive path 450 is configured to trigger MR, as described in embodiments of the present disclosure.

[0065] like Figure 4A As shown, transmit path 400 includes a channel coding and modulation block 405, a serial-to-parallel (S-to-P) block 410, an inverse fast Fourier transform (IFFT) of size N, a parallel-to-serial (P-to-S) block 420, an add cyclic prefix block 425, and an upconverter (UC) 430. Receive path 450 includes a downconverter (DC) 455, a remove cyclic prefix block 460, an S-to-P block 465, a fast Fourier transform (FFT) of size N, a parallel-to-serial (P-to-S) block 475, and a channel decoding and demodulation block 480.

[0066] In transmit path 400, channel coding and modulation block 405 receives a set of information bits, applies coding (such as low-density parity check (LDPC) coding), and modulates the input bits (such as using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols. Serial-to-parallel block 410 converts (e.g., demultiplexes) the serial modulation symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in gNB 102 and UE 116. Size-N IFFT block 415 performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 420 converts (e.g., multiplexes) the parallel time-domain output symbols from Size-N IFFT block 415 to generate a serial time-domain signal. Add cyclic prefix block 425 inserts a cyclic prefix into the time-domain signal. Upconverter 430 modulates (e.g., upconverts) the output of Add cyclic prefix block 425 to RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before conversion to RF frequency.

[0067] like Figure 4BAs shown, downconverter 455 downconverts the received signal to baseband frequency, and remove cyclic prefix block 460 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 465 converts the time-domain baseband signal into parallel time-domain signals. Size-N FFT block 470 performs an FFT algorithm to generate N parallel frequency-domain signals. (P to S) block 475 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 480 demodulates and decodes the modulated symbols to recover the original input data stream.

[0068] Each of gNBs 101-103 may implement a transmit path similar to 400 for transmitting in the downlink to UEs 111-116 and may implement a receive path similar to 450 for receiving in the uplink from UEs 111-116. Similarly, each of UEs 111-116 may implement a transmit path similar to 400 for transmitting in the uplink to gNB 101-103 and may implement a receive path similar to 450 for receiving in the downlink from gNB 101-103.

[0069] Figure 4A and Figure 4B Each component in may be implemented using hardware alone or a combination of hardware and software / firmware. As a specific example, Figure 4A and Figure 4B At least some components in can be implemented in software, while other components can be implemented by configurable hardware or a mixture of software and configurable hardware. For example, FFT block 470 and IFFT block 415 can be implemented as configurable software algorithms, where the value of size N can be modified according to the implementation.

[0070] In addition, although described as using FFT and IFFT, this is by way of illustration only and should not be construed as limiting the scope of the present disclosure. Other types of transforms may be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of the variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of the variable N may be any integer that is a power of two (such as 1, 2, 4, 8, 16, etc.).

[0071] although Figure 4A and Figure 4B Examples of wireless transmit and receive paths 400 and 450 are shown, respectively, but may be Figure 4A and Figure 4B Make various changes. For example, you can combine, further subdivide or omit Figure 4A and Figure 4B Various components in the , and additional components can be added according to specific needs. In addition, Figure 4Aand Figure 4B It is intended to illustrate examples of the types of transmit and receive paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communications in a wireless network.

[0072] Figure 5 An example of a transmitter structure 500 for beamforming according to an embodiment of the present disclosure is shown. In certain embodiments, one or more of gNB 102 or UE 116 includes transmitter structure 500. For example, one or more of antenna 205 and its associated system or antenna 305 and its associated system may be included in transmitter structure 500. This example is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0073] Thus, embodiments of the present disclosure recognize that Rel-14 LTE and Rel-15 NR support up to 32 channel state information reference signal (CSI-RS) antenna ports, which enables an eNB or gNB to be equipped with a large number of antenna elements (such as 64 or 128). Multiple antenna elements can then be mapped onto one CSI-RS port. For mmWave bands, although the number of antenna elements can be larger for a given form factor, the number of CSI-RS ports (which can correspond to the number of digital precoding ports) can be limited due to hardware constraints (such as the feasibility of installing a large number of analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) at mmWave frequencies, as shown in FIG. Figure 5 As shown. One CSI-RS port can then be mapped to a large number of antenna elements that can be controlled by a set of analog phase shifters 501. One CSI-RS port can then correspond to a subarray that produces a narrow analog beam through analog beamforming 505. The analog beam can be configured to scan a wider range of angles 520 by changing the phase shifter group across symbols or time slots / subframes. The number of subarrays (equal to the number of RF chains) is the same as the number of CSI-RS ports NCSI-PORT. The digital beamforming unit 510 performs linear combinations across NCSI-PORT analog beams to further increase the precoding gain. Although the analog beam is broadband (and therefore not frequency selective), the digital precoding can vary across frequency subbands or resource blocks. Receiver operation can be similarly envisioned.

[0074] because Figure 5The transmitter structure 500 utilizes multiple simulated beams for transmission and reception (wherein one or a small number of simulated beams are selected from a large number of simulated beams, for example, after a training duration that is performed occasionally or periodically). The term "multi-beam operation" is used to refer to the entire system aspect. For the purposes of this description, this includes indicating an assigned DL or UL TX beam (also referred to as "beam indication"), measuring at least one reference signal for calculating and performing beam reporting (also referred to as "beam measurement" and "beam reporting," respectively), and receiving DL or UL transmissions via selection of the corresponding RX beam. Figure 5 The system is also applicable to higher frequency bands, such as >52.6 GHz (also known as Frequency Range 4 or FR4). In this case, the system can use only analog beams. Due to O2 absorption losses near 60 GHz (~10 dB additional loss per 100 m of distance), more and narrower analog beams (and therefore more radiators in the array) are required to compensate for the additional path loss.

[0075] NR supports discontinuous reception (DRX) for UEs in RRC_IDLE / RRC_INACTIVE mode or RRC_CONNECTED mode, so that the UE can stop receiving signals or channels during the INACTIVE period within the DRX cycle and save power consumption. In Rel-16, enhancements to DRX in RRC_CONNECTED mode (e.g., C-DRX) were introduced, in which a new downlink control information (DCI) format was used to help the UE skip the ON duration within the C-DRX cycle, so that further power saving gains can be achieved. In Rel-17, enhancements to DRX in RRC_IDLE / RRC_INACTIVE mode (e.g., I-DRX) were introduced, in which Paging Early Indication (PEI) was used for the UE to skip monitoring paging occasions, so that additional power saving gains can be achieved.

[0076] However, the UE still needs to wake up frequently to monitor new DCI formats or PEIs, so that the UE's radio cannot be completely turned off for long durations. Embodiments of the present disclosure recognize that in order to avoid this and obtain further power savings, additional receiver radios are evaluated, wherein the additional receiver radios can be used to monitor a specific set of signals with very low power consumption, and the MR radio can be turned off or operated at very low power for long durations.

[0077] The present disclosure focuses on a mechanism to trigger a transition from using an additional receiver with low power to using an MR.The present disclosure may focus on a UE in RRC_IDLE and / or RRC_INACTIVE and / or RRC_CONNECTED mode.

[0078] The present disclosure focuses on a triggering mechanism for a receiver to receive a low-power signal. More specifically, the following aspects are included in the present disclosure:

[0079] Trigger mechanism

[0080] oExplicit triggering using signals or channels

[0081] oImplicit triggering without using explicit signals or channels

[0082] Application delay

[0083] oMR application delay

[0084] oLR application delay

[0085] oRadio Resource Management (RRM) measurement relaxation based on application delay

[0086] oExtension of application delay

[0087] Example UE procedure for triggering MR

[0088] Figure 6 FIG600 is a diagram for explicitly triggering MR according to an embodiment of the present disclosure. For example, FIG600 can be used to explicitly trigger MR. Figure 3 This example is for illustration only, and other embodiments may be used without departing from the scope of this disclosure.

[0089] In one embodiment, an explicit signal or channel can trigger a transition from using the LR (e.g., such as LR312) to using the MR (e.g., such as MR314), or trigger the use / wake-up of the MR to receive signals / channels that can only be received by the MR (e.g., PDCCH), or trigger the LR to operate in a state with low power (e.g., not receive signals / channels with low power, such as LP-WUS and / or LP-SS).

[0090] In one example, the explicit signal or channel may be received by the LR. For example, the explicit signal or channel may be received by the UE at low power.

[0091] In one example, if UE 116 is in RRC_IDLE mode, UE 116 may transition to RRC_CONNECTED mode after receiving an explicit signal or channel.

[0092] In another example, if the UE 116 is in the RRC_INACTIVE mode, the UE 116 may transition to the RRC_CONNECTED mode after receiving an explicit signal or channel.

[0093] In one example, after receiving an explicit signal or channel, based on information included in the signal or channel (e.g., whether to receive MIB and / or SIBx and / or paging and / or PEI), the UE can turn on MR and attempt to receive MIB and / or SIBx (e.g., x=1 and / or x>1) and / or paging (e.g., PDCCH and / or PDSCH for paging) and / or PEI. For example, the UE may be in RRC_IDLE mode and / or RRC_INACTIVE mode.

[0094] In another example, after receiving an explicit signal or channel, the UE may turn on the MR and attempt to receive the PDCCH based on information included in the signal or channel (e.g., whether the PDCCH is received). For example, the UE may be in RRC_CONNECTED mode. For another instance, the PDCCH may be based on a specific search space (SS) set. For one sub-instance, the SS set may be a common SS set, for example, a CSS set for monitoring a PDCCH with a DCI format 2_6. For another sub-instance, the SS set may be a USS set for monitoring the PDCCH. For yet another instance, the PDCCH may be based on any search space set that has been configured for the UE to monitor. For yet another instance, the PDCCH may be based on any search space set that has been configured for the UE to monitor and is within the ON duration (e.g., active duration) of the C-DRX.

[0095] In one example, an explicit signal or channel can be sent by gNB 102.

[0096] In one example, the explicit signal or channel can be cell-specific.

[0097] In another example, the explicit signal or channel can be UE group specific.

[0098] In yet another example, the explicit signal or channel can be UE-specific.

[0099] In one example, the explicit signal or channel can be a low power wake-up signal (LP-WUS), where the LP-WUS may or may not be coupled with a synchronization signal received by the LR.

[0100] In one example, the explicit signal or channel may include information about whether the MR is triggered to wake up (eg, for PDCCH monitoring). In another example, the UE assumes that successful reception of the explicit signal or channel indicates that the MR is triggered to wake up (eg, for PDCCH monitoring).

[0101] In another example, the explicit signal or channel may also include information about a duration associated with the use of the MR (e.g., for PDCCH monitoring). For one example, the unit of the duration can be a symbol, slot, ms, frame, or DRX cycle. For one sub-example, the DRX cycle can be a paging DRX cycle for RRC_IDLE or RRC_INACTIVE mode. For another sub-example, the DRX cycle can be a UEC-DRX cycle for RRC_CONNECTED mode. For another example, the reference timing for the start of the duration can be the symbol or slot in which the UE receives a signal or channel (e.g., an explicit trigger). For another example, the reference timing for the start of the duration can be a delay after the symbol or slot in which the UE receives a signal or channel (e.g., an explicit trigger), where the delay can be provided by a higher-layer parameter, or fixed in the specification (e.g., as a default value if no higher-layer parameter is provided), or determined based on UE capabilities. For another example, the reference timing for the start of the duration can be explicitly provided by a signal or channel (e.g., an explicit trigger).

[0102] In another example, the explicit signal or channel may also include information about the time instance at which the use of MR (e.g., for PDCCH monitoring) is started. For one example, the unit of duration can be a symbol, a time slot, ms, a frame, or a DRX cycle. For one sub-example, the DRX cycle can be a paging DRX cycle for RRC_IDLE or RRC_INACTIVE mode. For another sub-example, the DRX cycle can be a UEC-DRX cycle for RRC_CONNECTED mode. In yet another example, the explicit signal or channel may also include information about one or more RRC states in which the UE can operate using MR (e.g., for PDCCH monitoring). For one example, the RRC state can be the RRC_IDLE state. For another example, the RRC state can be the RRC_INACTIVE state. For yet another example, the RRC state can be the RRC_CONNECTED state.

[0103] In another example, the explicit signal or channel may also include information about the reason for triggering the MR or UE process after triggering the MR. For one instance, the information can be the reception of system information (e.g., SIB1 or SIBx). For another instance, the information can be the reception of SS / PBCH blocks. For yet another instance, the information can be the reception of paging (e.g., PDCCH and / or PDSCH for paging). For yet another instance, the information can be the reception of a paging short message. For yet another instance, the information can be the reception of a paging early indication (PEI). For yet another instance, the information can be an update of system information. For yet another instance, the information can be the performance of RRM measurements. For yet another instance, the information can be the reception of user data. For yet another instance, the information can be a measurement report.

[0104] In another example, the explicit signal or channel may also include information about the type of search space set and / or PDCCH to be monitored after the MR is triggered (e.g., for PDCCH monitoring). For one instance, the search space set can be a CSS set. For another instance, the search space set can be a USS set. For one instance, the PDCCH can be a Type0-PDCCH. For another instance, the PDCCH can be a Type0A-PDCCH. For yet another instance, the PDCCH can be a Type1-PDCCH. For yet another instance, the PDCCH can be a Type1A-PDCCH. For yet another instance, the PDCCH can be a Type2-PDCCH. For yet another instance, the PDCCH can be a Type2A-PDCCH. For yet another instance, the PDCCH can be a Type3-PDCCH.

[0105] In yet another example, the explicit signal or channel may also include an indication of whether the cell is exposed / allowed to be accessed. In yet another example, the explicit signal or channel may also include information about an identifier (ID) to guide the corresponding (one or more) UEs to wake up the MR (e.g., for PDCCH monitoring). For a further consideration, the UE receiving the explicit signal or channel may compare the identifier with its own information about the identifier: if the identifier matches, the UE decides to wake up the MR (e.g., for PDCCH monitoring). For one instance, the ID can be a cell ID. For another instance, the ID is a UE group ID. For yet another instance, the ID can be a UE ID. For a sub-instance, the UE ID can be an ID within a UE group.

[0106] In yet another example, the explicit signal or channel may further include timing information. For one example, the timing information may be an SS / PBCH block index. For another example, the timing information may be an OFDM symbol index within a slot. For another example, the timing information may be a slot index, e.g., within a frame. For another example, the timing information may be a half-frame index. For another example, the timing information may be a frame index. For another example, the timing information may be an SFN or k LSBs of the SFN.

[0107] In yet another example, the explicit signal or channel may further include a configuration of DRX or an update of the configuration of DRX. For one example, the explicit signal or channel may include an index to a DRX configuration set, where, for example, one or more sets of DRX configurations may be provided to the UE before using LR. For another example, the explicit signal or channel may include at least one parameter in the DRX configuration set, such as a period, offset, or duration, and the UE applies the at least one parameter to DRX (e.g., for PDCCH monitoring) after waking up the MR. For one example, the DRX may be paging DRX and / or extended paging DRX in RRC_IDLE and / or RRC_INACTIVE mode. For another example, the DRX may be C-DRX in RRC_CONNECTED mode.

[0108] In yet another example, the explicit signal or channel may further include information about system information updates. In one example, if the UE does not receive an explicit signal or channel in one of the reception opportunities, or receives an explicit signal or channel instructing the UE not to wake up the MR (e.g., for PDCCH monitoring), the UE may continue to use the LR (e.g., continue to monitor low-power signals that can be received by the LR, such as LP-WUS).

[0109] In another example, if the UE receives an explicit signal or channel in one of the reception opportunities, the UE may continue to use the LR and ignore the explicit signal or channel (e.g., continue to monitor low-power signals that can be received by the LR, such as LP-WUS). For one sub-example, this applies to RRC_IDLE and / or RRC_INACTIVE modes. For another sub-example, this applies to RRC_CONNECTED mode. For one sub-example, this is subject to UE capabilities. For another sub-example, this is subject to instructions in UE assistance information. For yet another sub-example, this is subject to network instructions (e.g., configured by higher layer parameters).

[0110] In another example, if the UE does not receive an explicit signal or channel in K reception opportunities and / or receives an explicit signal or channel instructing the UE not to wake up the MR (e.g., for PDCCH monitoring) K times and / or a combination of these two scenarios up to K times (e.g., K is a positive integer), then the UE may wake up the MR (e.g., for PDCCH monitoring). For example, the K reception opportunities may be consecutive reception opportunities. For another example, K may be an integer fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another example, K may be provided by a higher-layer parameter. For another example, K may be provided by a higher-layer parameter, and if not provided, K may be an integer fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For one sub-example, this applies to RRC_IDLE and / or RRC_INACTIVE mode. For another sub-example, this applies to RRC_CONNECTED mode. For one sub-example, this is subject to UE capabilities. For another sub-example, this is subject to instructions in UE assistance information. For another sub-example, this is subject to network instructions (e.g., configured by higher-layer parameters).

[0111] In another example, the gNB may send an explicit signal or channel on one or more occasions to trigger the use of an MR (e.g., for PDCCH monitoring). For example, when the gNB receives an UL transmission from the UE, the gNB may assume that the UE successfully received the explicit signal or channel. For one sub-example, the UL transmission may be a Msg1 (e.g., PRACH) transmission in a 4-step RACH. For another sub-example, the UL transmission may be a Msg3 transmission in a 4-step RACH. For yet another sub-example, the UL transmission may be a MsgA transmission in a 2-step RACH. For yet another sub-example, the UL transmission may be a PUCCH. For yet another sub-example, the UL transmission may be a PUSCH. For yet another sub-example, the UL transmission may be a UL RS (e.g., SRS). For yet another sub-example, the UL transmission may be any UL signal or channel. For yet another sub-example, the UE transmission may be a dedicated UL transmission used to confirm reception of the explicit signal or channel. For one sub-example, this applies to RRC_IDLE and / or RRC_INACTIVE modes. For another sub-example, this applies to RRC_CONNECTED mode. For one sub-example, this is subject to UE capabilities. For another sub-example, this is subject to instructions in UE assistance information. For yet another sub-example, this is subject to network instructions (e.g., configured by higher layer parameters).

[0112] In yet another example, the UE may autonomously wake up the MR (e.g., for PDCCH monitoring), e.g., regardless of the reception of explicit signals or channels. For one sub-example, this applies to RRC_IDLE and / or RRC_INACTIVE modes. For another sub-example, this applies to RRC_CONNECTED mode. For one sub-example, this is subject to UE capabilities. For another sub-example, this is subject to instructions in UE assistance information. For yet another sub-example, this is subject to network instructions (e.g., configured by higher-layer parameters).

[0113] For one example of information included in an explicit signal or channel, assuming that the explicit signal or channel is based on a message, the information can be carried or partially carried by the message before encoding the explicit signal or channel. For another example of information included in an explicit signal or channel, assuming that the explicit signal or channel is based on a message, the information can be carried or partially carried by the RNTI of the message.

[0114] For another example of information included in an explicit signal or channel, assuming that the explicit signal or channel is message-based, the information can be carried or partially carried by the scrambling sequence of the message. For one example of information included in an explicit signal or channel, assuming that the explicit signal or channel is sequence-based, the information can be carried or partially carried by the initial conditions of the sequence mapped to the explicit signal or channel.

[0115] For another example of information included in an explicit signal or channel, assuming that the explicit signal or channel is sequence-based, the information can be carried or partially carried by a cyclic shift or a combination of cyclic shifts of the sequence mapped to the explicit signal or channel. For another example of information included in an explicit signal or channel, assuming that the explicit signal or channel is sequence-based, the information can be carried or partially carried by a phase rotation value of the sequence mapped to the explicit signal or channel.

[0116] For one example of information included in an explicit signal or channel, the information can be carried or partially carried by a DMRS sequence of the explicit signal or channel. For another example of information included in an explicit signal or channel, the information can be carried or partially carried by a time domain and / or frequency domain opportunity of the explicit signal or channel within multiple candidate opportunities (for example, represented by a relative opportunity index within the multiple candidate opportunities).

[0117] As one example of information included in an explicit signal or channel, the information can be carried or partially carried by overlapping sequences of explicit signals or channels.

[0118] In one embodiment, the transition from using the LR to using the MR, or initiating the use / wake-up of the MR to receive signals / channels that can only be received by the MR (e.g., PDCCH), or enabling the LR to operate in a state with low power (e.g., not receiving signals / channels with low power, such as LP-WUS and / or LP-SS), can be triggered implicitly, for example, by an implicit trigger.

[0119] In one example, if the UE is in RRC_IDLE mode, the UE can transition to RRC_CONNECTED mode after applying an implicit trigger.

[0120] In another example, if the UE is in RRC_INACTIVE mode, the UE can transition to RRC_CONNECTED mode after applying an implicit trigger.

[0121] In one example, after applying an implicit trigger, based on information included in a signal or channel (e.g., whether to receive MIB and / or SIBx and / or paging and / or PEI), the UE can turn on MR and attempt to receive MIB and / or SIBx (e.g., x=1 and / or x>1) and / or paging (e.g., PDCCH and / or PDSCH for paging) and / or PEI. For example, the UE can be in RRC_IDLE mode and / or RRC_INACTIVE mode.

[0122] In another example, after applying an implicit trigger, the UE can turn on the MR and attempt to receive the PDCCH based on information included in the signal or channel (e.g., whether the PDCCH is received). For one instance, the UE can be in RRC_CONNECTED mode. For another instance, the PDCCH can be based on a specific search space (SS) set. For one sub-instance, the SS set can be a common SS set, for example, a CSS set for monitoring PDCCH with DCI format 2_6. For another sub-instance, the SS set can be a USS set for monitoring PDCCH. For yet another instance, the PDCCH can be based on any search space set that has been configured for UE monitoring. For yet another instance, the PDCCH can be based on any search space set that has been configured for UE monitoring and is within the on-duration (e.g., active duration) of C-DRX.

[0123] In one example, the implicit trigger can be based on timing. When a specific timing instance arrives, it can trigger a switch from using the LR to using the MR, or initiate the use / wake-up of the MR to receive signals / channels that can only be received by the MR (e.g., PDCCH), or enable the LR to operate in a state with low power.

[0124] • For a sub-example, the timing can be an OFDM symbol boundary.

[0125] • For another sub-example, the timing can be a slot boundary.

[0126] • For yet another sub-example, the timing can be a frame boundary.

[0127] • For yet another sub-example, the timing can be a DRX cycle boundary or an ON duration start boundary within a DRX cycle. For one sub-example, the DRX cycle can be a paging DRX cycle for RRC_IDLE or RRC_INACTIVE mode. For another sub-example, the DRX cycle can be a UEC-DRX cycle for RRC_CONNECTED mode.

[0128] In another example, the implicit trigger can be based on a timer. When the timer expires, it can trigger a switch from using the LR to using the MR, or initiate the use / wake-up of the MR to receive signals / channels that can only be received by the MR (e.g., PDCCH), or enable the LR to operate in a state with low power.

[0129] In another example, implicit triggering can be based on DRX cycle configuration in RRC_IDLE and / or RRC_INACTIVE mode.

[0130] • For a sub-example, implicit triggering can be aligned with paging occasions.

[0131] • For another sub-example, implicit triggering can be aligned with the monitoring timing of PEI.

[0132] In yet another example, implicit triggering can be based on DRX cycle configuration in RRC_CONNECTED mode.

[0133] • For a sub-example, the implicit trigger can be aligned with the on-duration in the DRX cycle.

[0134] • For another sub-example, the implicit trigger can be aligned with the boundaries of the periods of the DRX cycle.

[0135] In yet another example, implicit triggering can be based on the reception condition of the LR.

[0136] •For one sub-example, if a UE (e.g., using LR) misses reception of a DL signal or channel K times in a row, the UE can assume a transition from using LR to using MR, or initiate use / wake-up of MR to receive a signal / channel (e.g., PDCCH) that can only be received by MR, or enable LR to operate in a state with low power. In this sub-example, the DL signal or channel can be at least one of LP-SS, LP-WUS, or part of LP-WUS. In this sub-example, K can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-layer parameter, or provided by a higher-layer parameter, and if not provided, K can be an integer fixed in the specification (e.g., potentially determined based on the subcarrier spacing).

[0137] •For another sub-example, the UE (e.g., using LR) does not receive a DL signal or channel for a period of time, and the UE can assume a transition from using LR to using MR, or initiate use / wake-up of MR to receive a signal / channel that can only be received by MR (e.g., PDCCH), or enable LR to operate in a state with low power. In this sub-example, the DL signal or channel can be at least one of LP-SS, LP-WUS, or part of LP-WUS. In this sub-example, the duration can be fixed in the specification (e.g., possibly determined based on the subcarrier spacing), or provided by a higher-layer parameter, or provided by a higher-layer parameter, and if not provided, the duration can be an integer fixed in the specification (e.g., potentially determined based on the subcarrier spacing).

[0138] In yet another example, implicit triggering can be based on RRM measurements performed by the UE (eg, using LR).

[0139] •For one sub-example, if a UE (e.g., using LR) measures an RS with poor RRM measurement results (e.g., a measurement metric below a threshold) multiple times (e.g., K times) in a row, the UE can assume a transition from using LR to using MR, or initiate use / wake-up of MR to receive signals / channels that can only be received by MR (e.g., PDCCH), or enable LR to operate in a state with low power. For one instance in this sub-example, K can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-layer parameter, or provided by a higher-layer parameter, and if not provided, K can be an integer fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another instance in this sub-example, a threshold value for the ratio can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-layer parameter, or provided by a higher-layer parameter, and if not provided, the threshold value can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing).

[0140] •For another sub-example, if the UE (e.g., using LR) measures RS based on K measurement instances, and the ratio of bad RRM measurement results (e.g., measurement metrics below a first threshold) exceeds a second threshold, the UE can assume a transition from using LR to using MR, or initiate use / wake-up of MR to receive signals / channels that can only be received by MR (e.g., PDCCH), or enable LR to operate in a state with low power. For one instance in this sub-example, K can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-level parameter, or provided by a higher-level parameter, and if not provided, K can be an integer fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another instance in this sub-example, the first threshold can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-level parameter, or provided by a higher-level parameter, and if not provided, the first threshold can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another instance in this sub-example, the second threshold can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-level parameter, or provided by a higher-level parameter, and if not provided, the second threshold can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing).

[0141] • For yet another sub-example, if a UE (e.g., using LR) measures RS with poor RRM measurement results (e.g., measurement metrics below a threshold) multiple times consecutively within a duration, the UE can assume a transition from using LR to using MR, or initiate use / wake-up of MR to receive signals / channels that can only be received by MR (e.g., PDCCH), or enable LR to operate in a state with low power. For one instance in this sub-example, the duration can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-layer parameter, or provided by a higher-layer parameter, and if not provided, the duration can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing).

[0142] •For another sub-example, if the UE (e.g., using LR) measures RS for a duration and the ratio of bad RRM measurement results (e.g., the measurement metric is below a first threshold) exceeds a second threshold, the UE can assume a transition from using LR to using MR, or initiate the use of MR, or enable LR to operate in a state with low power. For one instance in this sub-example, the duration can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-level parameter, or provided by a higher-level parameter, and if not provided, the duration can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another instance in this sub-example, the first threshold can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-level parameter, or provided by a higher-level parameter, and if not provided, the first threshold can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another instance in this sub-example, the second threshold can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing), or provided by a higher-level parameter, or provided by a higher-level parameter, and if not provided, the second threshold can be a value fixed in the specification (e.g., potentially determined based on the subcarrier spacing).

[0143] • In a further consideration of the sub-example, the RS used for RRM measurements can be at least one of a LP-SS or a LP-WUS or a portion of a LP-WUS.

[0144] • In another further consideration of the sub-example, the RRM measurement metric can be at least one of RSRP or RSRQ or SINR or Reference Signal Antenna Relative Phase (RSARP).

[0145] For one example, when the gNB receives an UL transmission from a UE, the gNB may assume that MR is enabled (e.g., by implicit triggering) (e.g., for PDCCH monitoring).

[0146] • For one sub-example, the UL transmission can be a Msg1 (e.g., PRACH) transmission in a 4-step RACH. For another sub-example, the UL transmission can be a Msg3 transmission in a 4-step RACH. For yet another sub-example, the UL transmission can be a MsgA transmission in a 2-step RACH. For yet another sub-example, the UL transmission can be a PUCCH. For yet another sub-example, the UL transmission can be a PUSCH. For yet another sub-example, the UL transmission can be a UL RS (e.g., SRS).

[0147] • For yet another sub-example, the UL transmission can be any UL signal or channel.

[0148] • For a child instance, this applies to RRC_IDLE and / or RRC_INACTIVE modes.

[0149] • For another sub-instance, this applies to RRC_CONNECTED mode.

[0150] • For a sub-instance, this is subject to UE capabilities.

[0151] • For another sub-example, this is subject to the indication in the UE assistance information.

[0152] • For yet another sub-instance, this is subject to network instructions (eg, configured by higher layer parameters).

[0153] In another example, the UE may autonomously wake up the MR (eg, for PDCCH monitoring), eg, regardless of an implicit trigger.

[0154] • For a child instance, this applies to RRC_IDLE and / or RRC_INACTIVE modes.

[0155] • For another sub-instance, this applies to RRC_CONNECTED mode.

[0156] • For a sub-instance, this is subject to UE capabilities.

[0157] • For another sub-example, this is subject to the indication in the UE assistance information.

[0158] • For yet another sub-instance, this is subject to network instructions (eg, configured by higher layer parameters).

[0159] For example, the UE may be able to support both explicit triggering (eg, explicit triggering) and implicit triggering.

[0160] • For a sub-example, if the UE is not provided with explicit triggering or configuration of explicit triggering, the UE defaults to implicit.

[0161] • For another sub-example, if the UE does not receive an explicit trigger one or more times, the UE defaults to using an implicit trigger. For example, the number of times can be fixed in the specification (e.g., potentially determined based on the subcarrier spacing). For another example, the number of times can be provided by a higher-layer parameter. For yet another example, the number of times can be provided by a higher-layer parameter, and if not provided, the number of times can default to a fixed value in the specification (e.g., potentially determined based on the subcarrier spacing).

[0162] Figure 7 Graph 700 illustrates application delay according to an embodiment of the present disclosure. For example, Figure 1Any of the UEs 111-116 can utilize the graph 700 for application delay. This example is for illustration only and can be used without departing from the scope of the present disclosure.

[0163] In one embodiment, there can be an application delay for a MR (e.g., such as MR 314) to switch from using a LR (e.g., such as LR 312) to using a MR, or to trigger the use / wake-up of a MR to receive a signal / channel (e.g., PDCCH) that can only be received by a MR.

[0164] In one example, the application delay of the MR can be zero.

[0165] In one example, the application delay is determined using a reference timing as receipt of an explicit trigger (eg, a start or end instance of an explicit signal or channel).

[0166] In another example, the application delay is determined using a reference timing as an implicit trigger.

[0167] In one example, a delay can be applied for the UE to prepare to wake up the MR and prepare to transmit and / or receive (eg, transmit and / or receive a PDCCH), such as a preparation time.

[0168] In one example, the maximum value of the applied delay or the minimum value of the applied delay or the value of the applied delay can be determined by a specification, eg, potentially based on the subcarrier spacing.

[0169] In another example, the maximum value of the application delay or the minimum value of the application delay or the value of the application delay can be determined based on UE capabilities.

[0170] In yet another example, the maximum value of the applied delay or the minimum value of the applied delay or the value of the applied delay can be provided by a higher layer parameter. For a further consideration, if no higher layer parameter is provided, the UE can assume a default value determined by the specification, for example, potentially based on the subcarrier spacing.

[0171] In one example, within the maximum value of the applied delay or the minimum value of the applied delay or the value of the applied delay, it is not expected that the UE uses the MR to receive and / or send signals and / or channels (e.g., PDCCH reception using the MR). For one sub-example, the signal and / or channel can be an SS / PBCH block. For another sub-example, the signal and / or channel can be a PDCCH. For example, the PDCCH can have a specific type, such as Type0-PDCCH, Type0A-PDCCH, Type1-PDCCH, or Type2-PDCCH. For another example, the PDCCH can be any PDCCH monitored in the CSS. For another example, the PDCCH can be any PDCCH monitored in the USS. For another example, the PDCCH can be any PDCCH. For another sub-example, the signal and / or channel can be a PDSCH. For example, the PDSCH can be scheduled by a specific type of PDCCH (e.g., Type0-PDCCH, Type0A-PDCCH, Type1-PDCCH, or Type2-PDCCH). For another example, the PDSCH can be scheduled by any PDCCH monitored in the CSS. For yet another example, the PDSCH can be scheduled by any PDCCH monitored in the USS. For yet another example, the PDSCH can be scheduled by any PDCCH. For yet another sub-example, the signal and / or channel can be a DL RS. For example, the DL RS can be a TRS. For yet another example, the DL RS can be a CSI-RS. For yet another sub-example, the signal and / or channel can be a PUCCH. For yet another sub-example, the signal and / or channel can be a PUSCH. For yet another sub-example, the signal and / or channel can be a PRACH. For yet another sub-example, the signal and / or channel can be a UL RS.

[0172] In another example, after the maximum value of the application delay or the minimum value of the application delay or the value of the application delay (e.g., and before the next triggering of the LR or before the activation of the low power signal or before the associated timer), the UE is expected to use the MR to receive and / or transmit signals and / or channels (e.g., PDCCH reception using the MR).

[0173] • For a sub-example, the signal and / or channel can be a SS / PBCH block.

[0174] • For another sub-example, the signal and / or channel can be a PDCCH. For example, the PDCCH can have a specific type, such as Type 0-PDCCH, Type 0A-PDCCH, Type 1-PDCCH, or Type 2-PDCCH. For another example, the PDCCH can be any PDCCH monitored in the CSS. For yet another example, the PDCCH can be any PDCCH monitored in the USS. For yet another example, the PDCCH can be any PDCCH.

[0175] • For yet another sub-example, the signal and / or channel can be a PDSCH. For example, the PDSCH can be scheduled by a specific type of PDCCH (e.g., Type0-PDCCH, Type0A-PDCCH, Type1-PDCCH, or Type2-PDCCH). For another example, the PDSCH can be scheduled by any PDCCH monitored in the CSS. For yet another example, the PDSCH can be scheduled by any PDCCH monitored in the USS. For yet another example, the PDSCH can be scheduled by any PDCCH.

[0176] • For yet another sub-example, the signal and / or channel can be a DL RS. For example, the DL RS can be a TRS. For another instance, the DL RS can be a CSI-RS.

[0177] • For yet another sub-example, the signal and / or channel can be a PUCCH.

[0178] • For yet another sub-example, the signal and / or channel can be a PUSCH.

[0179] • For yet another sub-example, the signal and / or channel can be a PRACH.

[0180] • For yet another sub-example, the signal and / or channel can be a UL RS.

[0181] In one embodiment, there can be an application delay for the LR to switch from using the LR to using the MR, or trigger the LR to operate in a state with low power (e.g., not receiving signals / channels with low power, such as LP-WUS and / or LP-SS). Figure 7 , the application delay of LR is denoted as D2_LR.

[0182] In one example, the application delay of LR can be zero.

[0183] In another example, the application delay of MR (eg, D2_MR) can be the same as the application delay of LR (eg, D2_LR).

[0184] In yet another example, the end instance of the application delay of the MR can be aligned with the end instance of the application delay of the LR.

[0185] In yet another example, the end instance of the application delay of the MR can be no earlier than (or later than) the end instance of the application delay of the LR.

[0186] In yet another example, the end instance of the application delay of the MR can be no later than (or earlier than) the end instance of the application delay of the LR.

[0187] In one example, the application delay is determined using a reference timing as receipt of an explicit trigger (eg, a start or end instance of an explicit signal or channel).

[0188] In another example, the application delay is determined using a reference timing as an implicit trigger.

[0189] In yet another example, the application delay is determined using the reference timing as a transmission of an acknowledgment of successful receipt of a trigger (eg, an explicit signal or channel).

[0190] In one example, a delay can be applied for the UE to prepare the LR to be in a low power state (eg, stop receiving low power signals such as LP-WUS and / or LP-SS), such as a preparation time.

[0191] In another example, application delay can be used for the UE to process signals and / or channels in order to be in a low power state (eg, stop receiving low power signals such as LP-WUS and / or LP-SS), eg, processing time.

[0192] In one example, the maximum value of the applied delay or the minimum value of the applied delay or the value of the applied delay can be determined by a specification, eg, potentially based on the subcarrier spacing.

[0193] In another example, the maximum value of the application delay or the minimum value of the application delay or the value of the application delay can be determined based on UE capabilities.

[0194] In yet another example, the maximum value of the application delay or the minimum value of the application delay or the value of the application delay can be provided by a higher-layer parameter. For further consideration, if no higher-layer parameter is provided, the maximum value of the application delay or the minimum value of the application delay or the value of the application delay can be determined by the specification, for example, potentially based on the subcarrier spacing.

[0195] In one example, after the maximum value of the applied delay or the minimum value of the applied delay or the value of the applied delay (e.g., and before the next triggering of the LR or before activation of the low power signal or before an associated timer), the UE is not expected to use the LR to receive and / or transmit signals and / or channels.

[0196] • For one sub-example, the signal and / or channel can be a low power wake-up signal (LP-WUS) or a portion of a LP-WUS.

[0197] •For another sub-example, the signal and / or channel can be a synchronization signal received by the LR, for example, to achieve synchronization between gNB102 and the LR.

[0198] In another example, within a maximum value of the applied delay or a minimum value of the applied delay or a value of the applied delay, the UE 116 is expected to receive and / or transmit a signal and / or channel using the LR.

[0199] • For one sub-example, the signal and / or channel can be a low power wake-up signal (LP-WUS) or a portion of a LP-WUS.

[0200] •For another sub-example, the signal and / or channel can be a synchronization signal received by the LR, for example, to achieve synchronization between gNB102 and the LR.

[0201] In one embodiment, the measurement process can be determined based on one or more application delays, including at least one of RRM, RLM, BM, and BFR.

[0202] In one example, the measurement procedure is applicable to RRC_IDLE and / or RRC_INACTIVE states.

[0203] In another example, the measurement procedure is applicable to the RRC_CONNECTED state.

[0204] In one example, within a maximum value of the applied delay or a minimum value of the applied delay or a value of the applied delay of the MR, the UE is not expected to perform measurements based on signals other than the low power signal (eg, using the MR).

[0205] • For a sub-example, the measurement can be based on SS / PBCH blocks.

[0206] • For another sub-example, the measurement can be based on CSI-RS.

[0207] In another example, after a maximum value of the application delay or a minimum value of the application delay or a value of the application delay of the MR (e.g., and before the next triggering of the LR or before activation of the (one or more) low power signals or before an associated timer), the UE is expected to perform measurements based on signals other than the (one or more) low power signals (e.g., using the MR).

[0208] • For a sub-example, the measurement can be based on SS / PBCH blocks.

[0209] • For another sub - example, the measurement can be based on CSI - RS.

[0210] In yet another example, within the maximum value of the application delay for LR or the minimum value of the application delay or the value of the application delay, it is desired that the UE perform measurements based on a low - power signal (e.g., using LR).

[0211] • For one sub - example, the measurement can be based on LP - WUS or a part of LP - WUS.

[0212] • For another sub - example, the measurement can be based on the synchronization signal received by LR (LP - SS), e.g., to achieve synchronization between the gNB and LR.

[0213] In yet another example, after the maximum value of the application delay for LR or the minimum value of the application delay or the value of the application delay, it is not desired that the UE perform measurements based on a low - power signal (e.g., using LR).

[0214] • For one sub - example, the measurement can be based on LP - WUS or a part of LP - WUS.

[0215] • For another sub - example, the measurement can be based on the synchronization signal received by LR (LP - SS), e.g., to achieve synchronization between the gNB and LR.

[0216] In one example, if the duration is included in the application delay for MR and not included in the application delay for LR (e.g., when D2_LR < D2_MR), then the UE is not desired to perform measurements based on the RS located in that duration. For example, the measurement requirements can be relaxed based on the duration.

[0217] In another example, if the duration is included in the application delay for LR and not included in the application delay for MR (e.g., when D2_LR > D2_MR), then the UE can perform measurements based on at least one RS from MR or one RS from LR.

[0218] • For one sub - example, the measurement can be performed using either RS from MR (e.g., SS / PBCH block and / or CSI - RS) or RS from LR (e.g., LP - WUS or LP - SS), e.g., any instance of the measurement can be used to calculate L1 RSRP or L3 RSRP.

[0219] •For another sub-example, measurements can be performed using both RS from MR (e.g., SS / PBCH blocks and / or CSI-RS) and RS from LR (e.g., LP-WUS or LP-SS), e.g., both instances from the measurement can be used to calculate L1 RSRP or L3 RSRP.

[0220] In one embodiment, application delay can be extended based on the UE's reception of the signal and / or channel.

[0221] For one example, if the UE 116 receives the signal, the application delay of the MR and / or the application delay of the LR can be extended.

[0222] • For a sub-example, the signal can be a LP-WUS or a part of a LP-WUS.

[0223] •For another sub-example, the signal can be a synchronization signal received by the LR (e.g., LP-SS), for example, to achieve synchronization between the gNB 102 and the LR.

[0224] • For a sub-example, the ability to recount / reset the applied delay at the timing of the received signal.

[0225] • For another sub-example, the extended duration may be provided by a higher layer parameter. For a further consideration, if no higher layer parameter is provided, the extended duration can be determined as a default value in the specification, for example, potentially based on the subcarrier spacing.

[0226] Figure 8 800 illustrates an example UE process for triggering a transition from using LR to using MR according to an embodiment of the present disclosure. For example, the flowchart 800 of the example UE process for triggering a transition from using LR (e.g., such as LR 312) to using MR (e.g., such as MR 314) can be performed by Figure 1 This example is for illustration only and can be used without departing from the scope of the present disclosure.

[0227] The process begins at 810 when the UE receives an explicit signal / channel as a trigger. At 820, the UE 116 determines the timing for performing the transition. At 830, the UE 116 terminates the use of LR after a first application delay after receiving the trigger. At 840, the UE 116 enables the use of MR after a second application delay after receiving the trigger.

[0228] In one embodiment, reference Figure 8Example UE procedures are shown for triggering a transition from using the LR to using the MR, or triggering use of the MR, or triggering the LR to operate in a state with low power.

[0229] In an embodiment of the present disclosure, a user equipment (UE) in a wireless communication system includes: a transceiver; a low power receiver (LR) configured to receive a low power wake-up signal (LP-WUS); and a processor operably coupled to the transceiver and the LR, the processor configured to determine an indication regarding whether to trigger the transceiver to receive a physical downlink control channel (PDCCH) based on the LP-WUS, wherein the transceiver is further configured to receive the PDCCH based on the indication.

[0230] In an embodiment of the present disclosure, when the UE is in RRC_IDLE or RRC_INACTIVE state, the PDCCH is associated with paging.

[0231] In an embodiment of the present disclosure, when the UE is in the RRC_CONNECTED state, the PDCCH is monitored in an active period of a discontinuous reception (DRX) cycle.

[0232] In an embodiment of the present disclosure, the processor is further configured to determine: an application delay relative to reception of the LP-WUS, and reception of the PDCCH is after the application delay.

[0233] In an embodiment of the present disclosure, the processor is further configured to determine a signal set for radio resource management (RRM) before applying the delay, and the signal set is not measured by the UE.

[0234] In an embodiment of the present disclosure, the processor is further configured to determine an indication of an identity (ID) based on the LP-WUS, and when the ID of the UE matches the ID in the indication, the transceiver is triggered to receive the PDCCH.

[0235] In an embodiment of the present disclosure, the processor is further configured to: trigger the transceiver to receive the PDCCH when the LR fails to receive the LP-WUS for K consecutive times, where K is a positive integer provided by a higher layer parameter.

[0236] In an embodiment of the present disclosure, a method for a user equipment (UE) in a wireless communication system includes: receiving a low-power wake-up signal (LP-WUS) using a low-power receiver (LR); determining an indication of whether to trigger a transceiver of the UE to receive a physical downlink control channel (PDCCH) based on the LP-WUS; and receiving the PDCCH using the transceiver based on the indication.

[0237] In an embodiment of the present disclosure, when the UE is in RRC_IDLE or RRC_INACTIVE state, the PDCCH is associated with paging.

[0238] In an embodiment of the present disclosure, when the UE is in the RRC_CONNECTED state, the PDCCH is monitored in an active period of a discontinuous reception (DRX) cycle.

[0239] In an embodiment of the present disclosure, the method further includes: determining an application delay relative to reception of the LP-WUS, and determining that reception of the PDCCH is after the application delay.

[0240] In an embodiment of the present disclosure, the method further includes: determining a signal set for radio resource management (RRM) before applying the delay; and determining that the signal set is not measured by the UE.

[0241] In an embodiment of the present disclosure, the method further includes determining an indication of an identity (ID) based on the LP-WUS, and receiving the PDCCH when the ID of the UE matches the ID in the indication.

[0242] In an embodiment of the present disclosure, the method further includes: triggering the transceiver to receive the PDCCH when the LR fails to receive the LP-WUS for K consecutive times, where K is a positive integer provided by a higher layer parameter.

[0243] In an embodiment of the present disclosure, a base station (BS) in a wireless communication system includes: a processor, operably configured to: determine an indication as to whether a physical downlink control channel (PDCCH) will be received by a user equipment (UE); and determine to include the indication in a low-power wake-up signal (LP-WUS); and a transceiver operably coupled to the processor, the transceiver configured to: send the LP-WUS; and when the indication in the LP-WUS indicates that the PDCCH will be received by the UE, send the PDCCH.

[0244] In an embodiment of the present disclosure, when the UE is in RRC_IDLE or RRC_INACTIVE state, the PDCCH is associated with paging.

[0245] In an embodiment of the present disclosure, when the UE is in the RRC_CONNECTED state, the PDCCH will be received in an active period of a discontinuous reception (DRX) cycle.

[0246] In an embodiment of the present disclosure, the processor is further configured to determine: an application delay relative to transmission of the LP-WUS, and the transmission of the PDCCH is after the application delay.

[0247] In an embodiment of the present disclosure, the processor is further configured to determine a signal set for radio resource management (RRM) before applying the delay, and the signal set is not measured by the UE.

[0248] In an embodiment of the present disclosure, the processor is further configured to: determine an indication of an identification (ID); and determine to include the indication in the LP-WUS; and the transceiver is configured to send the PDCCH when the ID of the UE matches the ID in the indication.

[0249] Figure 9 The structure of a UE according to an embodiment of the present disclosure is shown.

[0250] like Figure 9 As shown, the UE according to the embodiment may include a transceiver 910, a memory 920, and a processor 930. The transceiver 910, the memory 920, and the processor 930 of the UE may operate according to the communication method of the above-mentioned UE. However, the components of the UE are not limited thereto. For example, the UE may include more or fewer components than the above-mentioned components. In addition, the processor 930, the transceiver 910, and the memory 920 may be implemented as a single chip. In addition, the processor 930 may include at least one processor. In addition, Figure 9 UEs are respectively Figure 1 Corresponding to UE 111, 112, 113, 114, 115, and 116.

[0251] The transceiver 910 is collectively referred to as a UE receiver and a UE transmitter, and can transmit and receive signals to and from a base station or a network entity. The signals transmitted to and received from the base station or network entity may include control information and data. The transceiver 910 may include an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for amplifying the low noise and down-converting the frequency of the received signal. However, this is merely an example of the transceiver 910, and the components of the transceiver 910 are not limited to the RF transmitter and the RF receiver.

[0252] In addition, the transceiver 910 may receive a signal through a wireless channel and output it to the processor 930 , and transmit a signal output from the processor 930 through a wireless channel.

[0253] The memory 920 may store programs and data required for the operation of the UE. In addition, the memory 920 may store control information or data included in a signal obtained by the UE. The memory 920 may be a storage medium such as a read-only memory (ROM), a random access memory (RAM), a hard disk, a CD-ROM, and a DVD, or a combination of storage media.

[0254] The processor 930 may control a series of processes so that the UE operates as described above. For example, the transceiver 910 may receive a data signal including a control signal transmitted by a base station or a network entity, and the processor 930 may determine a result of receiving the control signal and the data signal transmitted by the base station or the network entity.

[0255] Figure 10 The structure of a base station according to an embodiment of the present disclosure is shown.

[0256] like Figure 10 As shown, the base station according to the embodiment may include a transceiver 1010, a memory 1020, and a processor 1030. The transceiver 1010, the memory 1020, and the processor 1030 of the base station may operate according to the communication method of the above-mentioned base station. However, the components of the base station are not limited thereto. For example, the base station may include more or fewer components than the above-mentioned components. In addition, the processor 1030, the transceiver 1010, and the memory 1020 may be implemented as a single chip. In addition, the processor 1030 may include at least one processor. In addition, Figure 10 The base station and the base station (for example, Figure 1 Corresponding to BS 101, 102, 103).

[0257] The transceiver 1010 is collectively referred to as a base station receiver and a base station transmitter, and can transmit and receive signals to and from a terminal (UE) or a network entity. The signals transmitted to and received from the terminal or network entity may include control information and data. The transceiver 1010 may include an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for amplifying the low noise and down-converting the frequency of the received signal. However, this is merely an example of the transceiver 1010, and the components of the transceiver 1010 are not limited to the RF transmitter and the RF receiver.

[0258] In addition, the transceiver 1010 may receive a signal through a wireless channel and output the signal to the processor 1030 , and transmit a signal output from the processor 1030 through a wireless channel.

[0259] The memory 1020 may store programs and data required for the operation of the base station. In addition, the memory 1020 may store control information or data included in the signal obtained by the base station. The memory 1020 may be a storage medium such as a read-only memory (ROM), a random access memory (RAM), a hard disk, a CD-ROM, and a DVD, or a combination of storage media.

[0260] The processor 1030 may control a series of processes so that the base station operates as described above. For example, the transceiver 1010 may receive a data signal including a control signal transmitted by a terminal, and the processor 1030 may determine a result of receiving the control signal and the data signal transmitted by the terminal.

[0261] Any of the above variant embodiments may be used independently or in combination with at least one other variant embodiment. The above flowcharts illustrate example methods that can be implemented according to the principles of the present disclosure, and various changes may be made to the methods illustrated in the flowcharts herein. For example, although shown as a series of steps, the various steps in each figure may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, a step may be omitted or replaced by another step.

[0262] Although the present disclosure has been described using exemplary embodiments, various changes and modifications may be suggested to those skilled in the art. The present disclosure is intended to encompass such changes and modifications as fall within the scope of the appended claims. Nothing in this application should be construed as implying that any particular element, step, or function is essential to the scope of the claims. The scope of a patented subject matter is defined by the claims.

Claims

1. A user equipment (UE) in a wireless communication system, the UE comprising: transceiver; a low power receiver (LR), configured to receive a low power wake-up signal (LP-WUS); as well as a processor operatively coupled to the transceiver and the LR, the processor configured to determine an indication regarding whether to trigger the transceiver to receive a physical downlink control channel (PDCCH) based on the LP-WUS, The transceiver is further configured to receive the PDCCH based on the indication.

2. The UE according to claim 1, wherein: When the UE is in RRC_IDLE or RRC_INACTIVE state, the PDCCH is associated with paging.

3. The UE according to claim 1, wherein: When the UE is in the RRC_CONNECTED state, the PDCCH is monitored in the active period of a discontinuous reception (DRX) cycle.

4. The UE according to claim 1, wherein: The processor is further configured to determine: the application delay relative to the reception of the LP-WUS, and The reception of the PDCCH is after applying a delay.

5. The UE according to claim 4, wherein: The processor is further configured to determine a signal set for radio resource management (RRM) before applying the delay, and The signal set is not measured by the UE.

6. The UE according to claim 1, wherein: The processor is further configured to determine an indication of an identification (ID) based on the LP-WUS, and When the UE's ID matches the ID in the indication, the transceiver is triggered to receive the PDCCH.

7. The UE according to claim 1, wherein: The processor is further configured to: trigger the transceiver to receive the PDCCH when the LR fails to receive the LP-WUS for K consecutive times, where K is a positive integer provided by a higher layer parameter.

8. A method for a user equipment (UE) in a wireless communication system, the method comprising: Receive a low-power wake-up signal (LP-WUS) using a low-power receiver (LR); determining an indication as to whether to trigger a transceiver of the UE to receive a physical downlink control channel (PDCCH) based on the LP-WUS; as well as Using a transceiver, a PDCCH is received based on the indication.

9. A base station (BS) in a wireless communication system, the BS comprising: A processor operatively configured to: determining an indication as to whether a physical downlink control channel (PDCCH) is to be received by a user equipment (UE); and determining to include the indication in a low power wake-up signal (LP-WUS); and A transceiver operatively coupled to the processor, the transceiver configured to: Send LP-WUS; and When the indication in the LP-WUS indicates that the PDCCH is to be received by the UE, the PDCCH is sent.

10. The BS according to claim 9, wherein: When the UE is in RRC_IDLE or RRC_INACTIVE state, the PDCCH is associated with paging.

11. The BS according to claim 9, wherein: When the UE is in the RRC_CONNECTED state, the PDCCH shall be received during the active period of the discontinuous reception (DRX) cycle.

12. The BS according to claim 9, wherein: The processor is further configured to determine: the application delay relative to the transmission of the LP-WUS, and The PDCCH is sent after applying a delay.

13. The BS according to claim 12, wherein: The processor is further configured to determine a signal set for radio resource management (RRM) before applying the delay, and The signal set is not measured by the UE.

14. The BS according to claim 9, wherein: The processor is also configured to: an indication of the identification (ID); and determining to include the indication in the LP-WUS; and The transceiver is configured to transmit the PDCCH when the ID of the UE matches the ID in the indication.

15. A method performed by a base station (BS) in a wireless communication system, the method comprising: determining an indication as to whether a physical downlink control channel (PDCCH) is to be received by a user equipment (UE); determining to include the indication in a low power wake-up signal (LP-WUS); Send LP-WUS; as well as When the indication in the LP-WUS indicates that the PDCCH is to be received by the UE, the PDCCH is sent.

Images