Method and apparatus for discontinuous reception of a set of user equipment

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a base station in a wireless communication system, the method comprising: transmitting configuration information to a user equipment (UE), the configuration information comprising information associated with a discontinuous reception DRX ON duration and a transmission occasion for a physical downlink control channel (PDCCH), and transmitting the configuration information to the UE based on the transmission occasion, in at least one transmission occasion, a PDCCH for a Downlink Control Information (DCI) format is transmitted to the UE, and a second PDCCH is transmitted to the UE from at least one DRX ON duration of consecutive # imgabs0 # DRX ON durations after transmission of the first PDCCH based on an indication in the DCI format, the indication of the DCI format being a bitmap having a size of # imgabs1 #, and the # imgabs2 # bit in the bitmap is respectively associated with the duration time of the DRX ON of the # imgabs3 # bit.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to methods and apparatus for discontinuous reception (DRX) of a group of user equipments (UEs). Background Art

[0002] 5G mobile communication technology defines a wide frequency band, making high transmission rates and new services feasible, and can be implemented not only in "below 6 GHz" frequency bands such as 3.5 GHz, but also in "above 6 GHz" frequency bands (including 28 GHz and 39 GHz) called millimeter waves. In addition, implementation of 6G mobile communication technology in terahertz frequency bands (e.g., 95 GHz to 3 THz bands) (called super 5G systems) has been considered to achieve 50 times the transmission rate of 5G mobile communication technology and one-tenth the ultra-low latency of 5G mobile communication technology.

[0003] At the beginning of the development of 5G mobile communication technology, in order to support services and to meet performance requirements related to enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine type communication (mMTC), standardization has been ongoing on the following items: beamforming and massive MIMO for reducing radio wave path loss and increasing radio wave transmission distance in millimeter waves, parameter sets supporting dynamic operations for efficiently utilizing millimeter wave resources and time slot formats (for example, operating multiple subcarrier spacings), initial access technology for supporting multi-beam transmission and broadband, definition and operation of BWP (bandwidth part), new channel coding methods such as LDPC (low-density parity check) codes for large-volume data transmission and polarization codes for highly reliable transmission of control information, L2 preprocessing, and network slicing for providing dedicated networks dedicated to specific services.

[0004] Currently, in view of the services to be supported by the 5G mobile communication technology, discussions on the improvement and performance enhancement of the initial 5G mobile communication technology are underway, and there is already physical layer standardization on the following technologies: V2X (Vehicle to Everything) for assisting driving decisions and enhancing user convenience by autonomous vehicles based on information about the location and status of the vehicle sent by the vehicle, NR-U (Unlicensed New Radio) aimed at making the operating system compliant with various regulation-related requirements in unlicensed bands, NR UE power saving, non-terrestrial network (NTN) as UE-satellite direct communication for providing coverage and positioning in areas where communication with terrestrial networks is unavailable.

[0005] In addition, standardization in air interface architecture / protocol has been conducted on technologies such as Industrial Internet of Things (IIoT) for supporting new services through interaction and integration with other industries, IAB (Integrated Access and Backhaul) for providing nodes for network service area extension by supporting wireless backhaul links and access links in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access (2-step RACH for NR) for simplifying the random access procedure. Standardization has also been conducted on system architecture / service aspects of the following items: 5G baseline architecture (e.g., service-based architecture or service-based interface) for combining network function virtualization (NFV) and software defined network (SDN) technologies, and mobile edge computing (MEC) for receiving services based on UE location.

[0006] With the commercialization of 5G mobile communication systems, the number of connected devices that have been exponentially increasing will be connected to the communication network, so it can be expected that enhanced functions and performance of 5G mobile communication systems and integrated operations of connected devices will be necessary. For this reason, new research is arranged on extended reality (XR) for efficiently supporting AR (augmented reality), VR (virtual reality), MR (mixed reality), etc., 5G performance improvement and complexity reduction by using artificial intelligence (AI) and machine learning (ML), AI service support, metaverse service support, and drone communication.

[0007] Wireless communication is one of the most successful innovations in modern history. The number of users of wireless communication services recently exceeded 5 billion and continues to grow rapidly. The demand for wireless data traffic is increasing rapidly due to the increasing popularity of smartphones and other mobile data devices such as tablets, "notebook" computers, netbooks, e-book readers and machine-type devices among consumers and enterprises. In order to meet the high growth of mobile data traffic and support new applications and deployments, it is critical to improve the efficiency and coverage of the radio interface. Summary of the invention

[0008] A base station (BS) in a wireless communication system, the BS comprising: a transceiver; and a controller, the controller being coupled to the transceiver and configured to: send configuration information to a user equipment (UE), the configuration information comprising information associated with a discontinuous reception (DRX) on (ON) duration and a transmission opportunity for a physical downlink control channel (PDCCH), send a PDCCH for a downlink control information (DCI) format to the UE at at least one transmission opportunity based on the transmission opportunity, and based on an indication in the DCI format, send a PDCCH for a continuous period after the first PDCCH is sent. The second PDCCH is sent to the UE within at least one DRX ON duration of the DRX ON duration, wherein: the indication in the DCI format is a size of The bitmap, and the bitmap The bits are DRX ON duration is associated with this.

[0009] A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver; and a controller, the controller being coupled to the transceiver and configured to: receive configuration information from a base station, the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH), based on the transmission opportunity, receive a PDCCH for a downlink control information (DCI) format from the base station at at least one transmission opportunity, and based on an indication in the DCI format, transmit a continuous DCI after receiving a first PDCCH from the base station; The second PDCCH is received from the base station within at least one DRX ON duration of the DRX ON duration, wherein: the indication in the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0010] A method performed by a base station in a wireless communication system, the method comprising: sending configuration information to a user equipment (UE), the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH); based on the transmission opportunity, sending a PDCCH for a downlink control information (DCI) format to the UE in at least one transmission opportunity; and based on an indication in the DCI format, sending a PDCCH in a continuous period after sending a first PDCCH The second PDCCH is sent to the UE within at least one DRX ON duration of the DRX ON duration, wherein: the indication in the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0011] A method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving configuration information from a base station, the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH); based on the transmission opportunity, receiving a PDCCH for a downlink control information (DCI) format from the base station in at least one transmission opportunity; and based on an indication in the DCI format, transmitting a PDCCH in a continuous period after receiving a first PDCCH from the base station. The second PDCCH is received from the base station within at least one DRX ON duration of the DRX ON duration, wherein: the indication of the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] For a more complete understanding of the present disclosure and advantages thereof, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts.

[0013] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown.

[0014] Figure 2 An example UE according to an embodiment of the present disclosure is shown.

[0015] Figure 3 An example BS according to an embodiment of the present disclosure is shown.

[0016] Figure 4A and Figure 4B Examples of wireless transmit and receive paths according to embodiments of the present disclosure are shown.

[0017] Figure 5 An example of DRX according to an embodiment of the present disclosure is shown.

[0018] Figure 6 An example of DRX for multiple UEs according to an embodiment of the present disclosure is shown.

[0019] Figure 7 An example of a DRX ON duration set according to an embodiment of the present disclosure is shown.

[0020] Figure 8 An example of a flowchart of a UE process according to an embodiment of the present disclosure is shown.

[0021] Fig. 9 An example WUS for a DRX ON Duration set according to an embodiment of the present disclosure is shown.

[0022] Fig.10 An example of a flowchart of a UE process according to an embodiment of the present disclosure is shown.

[0023] Fig.11 The structure of a UE according to an embodiment of the present disclosure is shown.

[0024] Fig.12 The structure of a base station according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0025] Before proceeding to the following detailed description, it may be beneficial to set forth the definitions of certain words and phrases used in this patent document. The term "coupled" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not the elements are in physical contact with each other. The terms "send," "receive," and "communicate," and their derivatives include direct and indirect communication. The terms "include," "comprise," and their derivatives mean including but not limited to. The word "or" is inclusive, meaning and / or. The term "associated" and its derivatives mean including, contained therein, interconnected with, contained, contained within, connected or connected with, coupled or coupled with, communicable, cooperative, interwoven, juxtaposed, close to, bound or bound with, possessing, possessing its characteristics, having a relationship with, or having an association with, etc. The term "controller" refers to any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and / or firmware. The functions associated with any particular controller may be centralized or distributed, whether local or remote. When used with a list of items, the phrase "at least one" means that different combinations of one or more of the listed items may be used, and only one item 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.

[0026] In addition, the various functions described below may be implemented or supported by one or more computer programs, each of which is formed by a 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, processes, functions, objects, classes, instances, related data, or parts thereof suitable for implementation in a 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 a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disk (CD), a digital video disk (DVD), or any other type of memory. "Non-transient" computer-readable media excludes wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transient computer-readable media include media that can permanently store data and media that can store data and then overwrite it, such as rewritable optical disks or erasable storage devices.

[0027] 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 also apply to prior and future uses of such defined words and phrases.

[0028] The present disclosure relates to DRX for a group of UEs.

[0029] In an embodiment, a base station (BS) in a wireless communication system is provided. The BS includes a transceiver configured to send a higher layer parameter and a processor operably coupled to the transceiver. The processor is configured to determine a DRX ON duration based on the higher layer parameter and determine a transmission opportunity for a physical downlink control channel (PDCCH) based on the higher layer parameter. A first PDCCH from the PDCCH provides a downlink control information (DCI) format. The transceiver is also configured to send the first PDCCH in at least one of the transmission opportunities. The processor is also configured to determine, based on an indication in the DCI format, whether to instruct the transceiver to transmit the first PDCCH in consecutive transmission opportunities after the first PDCCH is sent. The second PDCCH is sent during at least one of the DRX ON durations. The indication in the DCI format is of size The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0030] In another embodiment, a UE in a wireless communication system is provided. The UE includes a transceiver configured to receive a higher layer parameter and a processor operably coupled to the transceiver. The processor is configured to determine a discontinuous reception (DRX) ON duration based on the higher layer parameter, and determine a reception timing for a physical downlink control channel (PDCCH) based on the higher layer parameter. A first PDCCH from the PDCCH provides a downlink control information (DCI) format. The transceiver is also configured to receive the first PDCCH at at least one of the reception timings. The processor is also configured to determine, based on an indication in the DCI format, whether to indicate that the transceiver should receive a continuous reception after receiving the first PDCCH. The second PDCCH is received during at least one DRX ON duration of the DRX ON duration. The indication in the DCI format is of size The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0031] In another embodiment, a method for a UE in a wireless communication system is provided. The method includes receiving a higher layer parameter, and determining a DRX ON duration based on the higher layer parameter, and determining a reception timing for a physical downlink control channel (PDCCH) based on the higher layer parameter. A first PDCCH from the PDCCH provides a downlink control information (DCI) format. The method also includes receiving the first PDCCH in at least one of the reception timings, and determining whether to receive the first PDCCH in consecutive reception timings after receiving the first PDCCH based on an indication in the DCI format. The second PDCCH is received during at least one DRX ON duration of the DRX ON duration. The indication in the DCI format is of size The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0032] Other technical features may be easily understood by those skilled in the art through the following drawings, descriptions and claims.

[0033] Discussed below Figures 1 to 10 The various non-limiting embodiments used to describe the principles of the present disclosure in this patent document are only for illustration and should not be interpreted in any way as limiting the scope of the present disclosure. Those skilled in the art will appreciate that the principles of the present disclosure can be implemented in any appropriately arranged system or device.

[0034] In order to meet the increased demand for wireless data traffic since the deployment of 4G communication systems and to realize various vertical applications, 5G / NR communication systems have been developed and are 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 support robust coverage and mobility. 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 large antenna technologies are discussed in 5G / NR communication systems.

[0035] In addition, in the 5G / NR communication system, system network improvements are being developed based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communications, coordinated multi-point (CoMP), receiving-end interference cancellation, etc.

[0036] The discussion of 5G systems and their associated frequency bands is for reference only, as certain embodiments of the present disclosure may be implemented in 5G systems. However, the present disclosure is not limited to 5G systems or frequency bands associated with 5G systems, and embodiments of the present disclosure may be used in conjunction with any frequency bands. For example, aspects of the present disclosure may also be applied to the deployment of 5G communication systems, 6G, and possibly subsequent versions that use terahertz (THz) frequency bands.

[0037] The following documents and standard descriptions are incorporated by reference into the present disclosure as if fully set forth herein: [1] 3GPP TS 38.211 v16.1.0, “NR; Physical channels and modulation;” [2] 3GPP TS 38.212 v16.1.0, “NR; Multiplexing and Channel coding;” [3] 3GPP TS 38.213 v16.1.0, “NR; Physical Layer Procedures for Control;” [4] 3GPP TS 38.214 v16.1.0, “NR; Physical Layer Procedures for Data;” and [5] 3GPP TS 38.331 v16.1.0, “NR; Radio Resource Control (RRC) Protocol Specification.” The following Figures 1 to 3Various embodiments are described that are implemented in a wireless communication system and using Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques. Figures 1 to 3 The description is not meant to imply physical or architectural limitations to how different embodiments may be implemented. Different embodiments of the present disclosure may be implemented in any suitably arranged communications system.

[0038] 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.

[0039] 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.

[0040] gNB 102 provides wireless broadband access to network 130 for a first plurality of user equipment (UE) within coverage area 120 of gNB 102. 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 (e.g., a cell phone, a wireless laptop, a wireless PDA, etc.). gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. 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.

[0041] Depending on the network type, the term "base station" or "BS" may refer to any component (or set 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-enabled devices. A base station may provide wireless access according to one or more wireless communication protocols, such as 5G / NR Third Generation Partnership Project (3GPP) NR, Long Term Evolution (LTE), Advanced LTE (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 network infrastructure components that provide wireless access to remote terminals. In addition, depending on the network type, the term "user equipment" or "UE" may refer to any component such as a "mobile station", "user 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 a device that is generally considered to be a fixed device (such as a desktop computer or a vending machine).

[0042] The dashed lines show the approximate extents of coverage areas 120 and 125, which are shown as generally circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with gNBs, 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 wireless environment associated with natural and man-made obstacles.

[0043] As described in more detail below, one or more of UEs 111-116 include circuitry, programming, or a combination thereof for utilizing DRX for a group of UEs.In certain embodiments, one or more of BSs 101-103 include circuitry, programming, or a combination thereof to support DRX for a group of UEs.

[0044] although Figure 1 An example of a wireless network is shown, but Figure 1Various changes may be made. For example, wireless network 100 may include any number of gNBs and any number of UEs in any suitable arrangement. In addition, gNB 101 may communicate directly with any number of UEs and provide wireless broadband access to network 130 for these UEs. Similarly, each gNB 102-103 may communicate directly with network 130 and provide direct wireless broadband access to network 130 to the UEs. In addition, 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.

[0045] Figure 2 An example gNB 102 is shown according to an embodiment of the present disclosure. Figure 2 The embodiment of the gNB 102 shown in FIG. is for illustration only, and Figure 1 gNBs 101 and 103 in the example may have the same or similar configurations. However, gNBs have various configurations, and Figure 2 The scope of this disclosure is not limited to any particular implementation of a gNB.

[0046] like Figure 2 As shown, the gNB 102 includes multiple antennas 205a-205n, multiple transceivers 210a-210n, a controller / processor 225, a memory 230, and a backhaul or network interface 235.

[0047] 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 circuits in the transceivers 210a-210n and / or the controller / processor 225, which generate processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The controller / processor 225 may also process the baseband signals.

[0048] Transmit (TX) processing circuitry in the transceivers 210a-210n and / or the controller / processor 225 receives analog or digital data (e.g., voice data, network data, email, or interactive video game data) from the controller / processor 225. The TX processing circuitry encodes, multiplexes, and / or digitizes the output baseband data to generate processed baseband or IF signals. The transceivers 210a-210n up-convert the baseband or IF signals to RF signals that are transmitted via the antennas 205a-205n.

[0049] 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 in accordance with 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 output / input signals from / to multiple antennas 205a-205n are weighted differently to effectively direct the output signals in a desired direction. As another example, the controller / processor 225 may support methods for supporting DRX for a group of UEs. The controller / processor 225 may support any of a variety of other functions in the gNB 102.

[0050] The controller / processor 225 is also capable of executing programs and other processes, such as a DRX process for a group of UEs, that reside in the memory 230. The controller / processor 225 may move data into or out of the memory 230 as required by the executed process.

[0051] 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 over a backhaul connection or 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 (e.g., a system supporting 5G / NR, LTE, or LTE-A), the interface 235 can enable the gNB 102 to communicate with other gNBs over a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 235 can enable the gNB 102 to communicate over a wired or wireless local area network or over a wired or wireless connection to a larger network (such as the Internet). The interface 235 includes any suitable structure that supports communication over a wired or wireless connection, such as Ethernet or a transceiver.

[0052] 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.

[0053] although Figure 2 An example of a gNB 102 is shown, but the Figure 2 For example, gNB 102 may include Figure 2 Any number of each component shown in Figure 2 The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs.

[0054] Figure 3 An example UE 116 is shown according to an embodiment of the disclosure. Figure 3 The embodiment of UE 116 shown in FIG. 1 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 the present disclosure is not limited to any particular implementation of a UE.

[0055] 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.

[0056] The transceiver 310 receives an incoming RF signal from the antenna 305 transmitted by the gNB of the wireless network 100. The transceiver 310 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is processed by the RX processing circuit in the transceiver 310 and / or the processor 340, which generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit sends the processed baseband signal to the speaker 330 (e.g., for voice data) or is processed by the processor 340 (e.g., for web browsing data).

[0057] The TX processing circuit in the transceiver 310 and / or the processor 340 receives analog or digital voice data from the microphone 320, or receives other output baseband data (such as network data, email, or interactive video game data) from the processor 340. The TX processing circuit encodes, multiplexes, and / or digitizes the output baseband data to generate a processed baseband or IF signal. The transceiver 310 up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.

[0058] The processor 340 may 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 may control the reception of DL channel signals and the transmission of UL channel signals by the transceiver 310 according to well-known principles. In some embodiments, the processor 340 includes at least one microprocessor or microcontroller.

[0059] The processor 340 is also capable of executing other processes and programs resident in the memory 360. For example, the processor 340 can execute the process for using DRX for a group of UEs as described in the embodiments of the present disclosure. The processor 340 can move data into or out of the memory 360 as required by the execution process. In some embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to a signal received from the gNB or operator. The processor 340 is also coupled to the I / O interface 345, which provides the UE 116 with the ability to connect to other devices such as laptops and handheld computers. The I / O interface 345 is the communication path between these accessories and the processor 340.

[0060] Processor 340 is also coupled to input 350 including, for example, a touch screen, keyboard, etc., and display 355. An operator of UE 116 may enter data into UE 116 using input 350. Display 355 may be a liquid crystal display, a light emitting diode display, or other display capable of presenting text and / or at least limited graphics (e.g., from a website).

[0061] 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).

[0062] although Figure 3 An example of UE 116 is shown, but the Figure 3 Make various changes. For example, Figure 3 The various components in can be combined, further subdivided, or omitted, and other components can be added as required. 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 for use as other types of mobile or stationary devices.

[0063] Figure 4A and Figure 4BExamples of wireless transmit path 400 and receive path 450 according to embodiments of the present disclosure are shown, respectively. For example, transmit path 400 may be described as being implemented in a gNB (such as gNB 102), and 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 support DRX for a group of UEs as described in embodiments of the present disclosure.

[0064] like Figure 4A As shown, the 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) block of size N 415, a parallel-to-serial (P-to-S) block 420, an add cyclic prefix block 425, and an upconverter (UC) 430. The 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) block of size N 470, a parallel-to-serial (P-to-S) block 475, and a channel decoding and demodulation block 480.

[0065] In the transmit path 400, the channel coding and modulation block 405 receives a set of information bits, applies coding (e.g., low-density parity check (LDPC) coding), and modulates the input bits (e.g., using quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols. The 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 the gNB 102 and the UE 116. The size-N IFFT block 415 performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. The parallel-to-serial block 420 converts (e.g., multiplexes) the parallel time-domain output symbols from the size-N IFFT block 415 to generate a serial time-domain signal. The add cyclic prefix block 425 inserts a cyclic prefix into the time-domain signal. The up-converter 430 modulates (such as up-converts) the output of the add cyclic prefix block 425 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband prior to conversion to RF frequency.

[0066] like Figure 4BAs shown, the down converter 455 down-converts the received signal to the baseband frequency, and the cyclic prefix removal block 460 removes the cyclic prefix to generate a serial time domain baseband signal. The serial to parallel block 465 converts the time domain baseband signal into a parallel time domain signal. The size N FFT block 470 performs an FFT algorithm to generate N parallel frequency domain signals. The parallel to serial block 475 converts the parallel frequency domain signals into a sequence of modulated data symbols. The channel decoding and demodulation block 480 demodulates and decodes the modulation symbols to recover the original input data stream.

[0067] Each of gNBs 101-103 may implement a transmit path 400 similar to that for transmitting in the downlink to UEs 111-116 and may implement a receive path 450 similar to that for receiving in the uplink from UEs 111-116. Similarly, each of UEs 111-116 may implement a transmit path 400 for transmitting in the uplink to gNBs 101-103 and may implement a receive path 450 for receiving in the downlink from gNBs 101-103.

[0068] Figure 4A and Figure 4B Each component in may be implemented using hardware only 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.

[0069] In addition, although described as using FFT and IFFT, this is only an example 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 variable N can be any integer (e.g., 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N can be any integer that is a power of 2 (e.g., 1, 2, 4, 8, 16, etc.).

[0070] although Figure 4A and Figure 4B Examples of wireless transmission path 400 and reception path 450 are shown separately, but the Figure 4A and Figure 4B Make various changes. For example, Figure 4A and Figure 4B The various components in may be combined, further subdivided, or omitted, and additional components may be added as required. Figure 4A and Figure 4B It is intended to illustrate examples of the types of transmit paths 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.

[0071] Figure 5 An example architecture 500 of DRX according to an embodiment of the present disclosure is shown. For example, the architecture 500 may be composed of Figure 1 This example is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0072] Embodiments of the present disclosure identify NR supporting DRX of UE, wherein the UE 116 may be configured with a periodically displayed DRX cycle associated with an ON duration timer (e.g., onDurationTimer) and an inactivity timer (e.g., InactivityTimer). The UE 116 may also be configured with a wake-up signal (WUS), the WUS being in a downlink control information (DCI) format, and if the WUS instructs the UE 116 to monitor physical downlink control information for a duration of onDurationTimer, the UE 116 monitors the PDCCH for a duration of onDurationTimer from the start of the DRX cycle. If the UE 116 receives any PDCCH within the duration of onDurationTimer, the UE 116 immediately starts the duration of InactivityTimer and continues to monitor the PDCCH for the duration of InactivityTimer. An illustration of DRX is shown in FIG. Figure 5 shown.

[0073] Figure 6 An example architecture 600 for DRX of multiple UEs according to an embodiment of the present disclosure is shown. For example, the architecture 600 may be composed of Figure 1 This example is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0074] When multiple UEs are configured with DRX, the ON duration of the DRX cycle may not be aligned for the multiple UEs, and from the perspective of the gNB 102, when traffic arrives before the corresponding ON duration, transmission may occur within the corresponding ON duration, such that the transmission may be discontinuous.

[0075] While DRX helps UE energy saving, it does not help gNB energy saving. Furthermore, gNB cannot completely rely on scheduling to align DRX ON duration because traffic from UE is unpredictable. Furthermore, using UE specific indications (e.g., WUS) consumes additional energy for gNB. Therefore, it is beneficial and necessary to support DRX mechanism for a group of UEs so that both UE and gNB can achieve energy saving. The present disclosure focuses on aspects related to energy saving including configuration and indication.

[0076] From the perspective of the gNB 102, discontinuous transmission bursts may not save the gNB's energy, and scheduling cannot be fully relied upon to try to align the DRX ON duration because the traffic from the UE is unpredictable. In addition, the use of UE-specific indications (e.g., WUS) will also consume additional energy of the gNB. For this reason, it is beneficial and necessary to support a DRX mechanism for a group of UEs, and the present disclosure focuses on the relevant aspects including configuration and indication.

[0077] Embodiments of the present disclosure provide DRX for a group of UEs and include the following aspects: DRX configuration for a group of UEs; UE procedures for a DRX ON duration set; WUS for the group of UEs; and UE procedures for receiving WUS.

[0078] Figure 7 An example architecture 700 for a DRX ON duration set according to an embodiment of the present disclosure is shown. For example, the architecture 700 may be composed of Figure 1 This example is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0079] In one embodiment, a group of UEs may be configured with a DRX ON duration set. For example, the start time instance of each DRX ON duration in the DRX ON duration set may be expressed as: , and the duration of each DRX ON duration in the DRX ON duration set can be expressed as ,in is the index of each DRX ON duration in a DRX ON duration set, and is the number of DRX ON durations in the DRX ON duration set.

[0080] In one example, the number of DRX ON durations in the DRX ON duration set (eg, ) may be provided by, for example, higher layer parameters associated with the configuration for the DRX ON duration set.

[0081] In one example, the DRX ON duration set has, for example, the same value as the ON duration associated with the configuration for the DRX ON duration set. It is common to all DRX ON durations and its value may be provided by a common higher layer parameter.

[0082] In another example, each DRX ON duration in the DRX ON duration set may have a separate value of ON duration, for example, associated with the configuration of each DRX ON duration in the DRX ON duration set. is configured individually for each DRX ON duration (e.g., via higher layer parameters) and is identical to the configuration associated with it.

[0083] In one example, the DRX ON duration sets do not overlap. .

[0084] In one example, the DRX ON duration sets do not overlap and occupy a consecutive number of symbols or time slots or frames in the time domain. For this example, the duration of the DRX ON Duration may be equal to the interval between the start time instances of two adjacent DRX ON Durations.

[0085] In one example, the start instances of the DRX ON duration sets have a common interval. is the same as For another example, this interval may be configured by a higher layer parameter to determine the start instance of the DRX ON duration set, e.g. ,in, is the common offset of the DRX ON duration set, It is the interval between adjacent DRX ON durations.

[0086] In one example, the DRX ON Duration Sets have the same DRX cycle, for example, associated with a configuration for the DRX ON Duration Set, and the value of the DRX cycle may be provided by a common higher layer parameter.

[0087] In another example, each DRX ON duration in the DRX ON duration set may have a separate DRX cycle (eg, provided by higher layer parameters), eg, associated with the configuration of each DRX ON duration in the DRX ON duration set.

[0088] In one example, the DRX ON Duration sets have the same offset to determine the first DRX ON Duration within the DRX ON Duration set, eg, associated with a configuration for the DRX ON Duration set, and its value may be provided by a common higher layer parameter.

[0089] In another example, each DRX ON Duration in the DRX ON Duration Set may have a separate offset to determine, for example, a start time instance of the DRX ON Duration associated with the configuration of each DRX ON Duration in the DRX ON Duration Set (eg, provided by a higher layer parameter).

[0090] In one example, the DRX ON Duration Set has the same inactivity timer associated with the DRX ON Duration Set (eg, associated with the configuration of the DRX ON Duration Set), and its value may be provided by a common higher layer parameter.

[0091] In another example, each DRX ON duration in the DRX ON duration set may be associated with an inactivity timer (eg, provided by a higher layer parameter), eg, associated with a configuration of each DRX ON duration in the DRX ON duration set.

[0092] In one embodiment, there may be an association between a DRX ON Duration set and a group of UEs. From a UE perspective, a UE 116 may determine an association with a DRX ON Duration within a DRX ON Duration set.

[0093] In one example, an association between a DRX ON duration set and a group of UEs may be configured by the gNB 102. For example, the gNB 102 may configure a group of UEs for each DRX ON duration within the DRX ON duration set.

[0094] In another example, the association between the DRX ON duration set and a group of UEs may be determined based on UE identity (ID). For example, if the UE IDs in a group of UEs satisfy ,in is the number of a group of UEs, then a group of UEs with index For another example, if the UE IDs in a group of UEs satisfy ,in is the number of a group of UEs, then a group of UEs with index For a sub-instance of the above example For another sub-instance of the above example, May be provided by higher layer parameters.

[0095] In another example, such as according to examples in the present disclosure, an association between a DRX ON duration set and a group of UEs may be determined based on an indication in a DCI format.

[0096] In another example, the UE 116 desires to monitor the PDCCH only in one of the DRX ON durations within a set of DRX ON durations in the DRX cycle.

[0097] In one example, a group of UEs may be all UEs served by gNB 102.

[0098] In another example, a group of UEs may be all UEs in RRC_CONNECTED state and served by gNB 102.

[0099] In another example, a group of UEs may be determined by gNB 102, e.g., by a configuration from gNB 102.

[0100] Figure 8 An example of a flowchart of a method 800 of a UE process according to an embodiment of the present disclosure is shown. For example, the method 800 may be Figure 1 The method 800 is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0101] In one instance, the example UE process applies when a wake-up signal (WUS) for a DRX ON duration set is not configured. The DRX ON duration set may be provided to the UE via a higher layer parameter (801). For example, according to an example in the present disclosure, the UE 116 determines an association with at least one DRX ON duration within the DRX ON duration set (802). The UE 116 determines a parameter for the associated DRX ON duration, including at least one of a DRX cycle, a start time instance of the DRX ON duration, an ON duration timer, or an inactivity timer (803). The UE 116 monitors the PDCCH for the associated DRX ON duration, which duration is provided by the ON duration timer (804). If the UE 116 monitors the PDCCH before the ON duration timer expires, the UE 116 starts the inactivity timer and continues to monitor the PDCCH for the duration provided by the inactivity timer (805); otherwise, the UE 116 stops monitoring the PDCCH in the DRX cycle and starts monitoring the PDCCH in the associated ON duration of the next DRX cycle.

[0102] Fig. 9 An example wake-up signal (WUS) 900 for a DRX ON duration set according to an embodiment of the present disclosure is shown. For example, WUS 900 may be sent by gNB 102 to Figure 1 The WUS 900 is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0103] In one embodiment, for a group of UEs, there may be a wake-up signal (WUS) supported for a DRX ON duration set.

[0104] In one example, a WUS opportunity (WUS-O) for a group of UEs may be a set of PDCCH monitoring opportunities (MO). For example, WUS-O includes In one example, the UE only needs to monitor the PDCCH in one MO within the PDCCH MO set, for example, based on an indication from a higher layer parameter, or based on the UE ID. In another example, the UE needs to monitor the PDCCH in multiple MOs within the PDCCH MO set, where, for example, assuming multiple (e.g., ) The RS of the PDCCH in MO is QCL, and is for example based on an indication from a higher layer parameter, or based on the UE ID.

[0105] In a sub-example , WUS-O includes a single PDCCH MO. For this sub-example, WUS-O can be the same PDCCH MO.

[0106] In another sub-example, It can be the number of beams used for beam scanning. For an example, , for example, MOs corresponding to the same beam index may be associated with the same DRX ON duration in the DRX ON duration set. For another example, Can be provided by higher-level parameters. For another example, It can be the number of synchronization signal / physical broadcast channel (SS / PBCH) blocks transmitted. For another example, ,in is the number of multiple groups of UEs as described in the present disclosure. For this example, UE ID and MO# There can be a relationship between ,and For a sub-instance, if the UE IDs in a group of UEs satisfy , then the group of UE and MO# ). For another sub-instance, if the UE IDs in a group of UEs satisfy , then a group of UE and MO# ) are associated.

[0107] In another sub-example, For one example, UE 116 may assume Number of MOs to be repeated For example, it can be assumed that The reference signal (RS) associated with the PDCCH candidate in MO# The RS quasi co-location (QCL) associated with the PDCCH candidate is ,and For another example, , and does not support duplication. For another instance, It may be provided by a higher layer parameter. For another example, if no higher layer parameter is provided, UE 116 assumes .

[0108] In another sub-example, we can assume that the same ) in the PDCCH candidate associated with the reference signal (RS) in the DRX ON duration # The RS associated with the PDCCH candidate in is quasi co-located (QCL), where ,and .

[0109] In another example, the temporal position of the WUS-O may be determined based on a temporal reference point and a temporal offset compared to the temporal reference point (eg, before the temporal reference point).

[0110] In one example, the time reference point may be the start of a DRX cycle.

[0111] In another case, the time reference point may be the start of the DRX ON duration of the first DRX ON duration in the DRX cycle.

[0112] In one example, the time offset may be provided by a higher layer parameter.

[0113] In one example, after applying the time offset, UE 116 can determine the first PDCCH MO for WUS-0.

[0114] In yet another example, an indication of a DCI format may be provided to UE 116 to monitor PDCCH candidates. For one example, the DCI format may be DCI format 2_0. For another example, the DCI format may be DCI format 2_6. For yet another example, the DCI format may be DCI format 2_7. For yet another example, the DCI format may be a new DCI format.

[0115] In yet another example, the DCI format may include an indication of whether to monitor the PDCCH and / or start the DRX ON duration timer.

[0116] In one example, the indication may be of length and each bit is associated with a group of UEs (e.g., the first Bit and Group# UE, where the association may be configured by a higher layer parameter or determined based on the UE's ID), or with a DRX ON duration in a DRX ON duration set (e.g., DRX ON duration # ) are associated.

[0117] For example, a bit in the bitmap that takes on a value of 1 (for example, bits) indicates a group of UEs (e.g., group # ) during the corresponding DRX ON duration (e.g. DRX ON duration # ) and / or start a corresponding DRX ON duration timer in the DRX cycle (e.g., for DRX ON duration # ); For another example, a bit in the bitmap that takes a value of 0 (e.g., the first bit in the bitmap) bits) indicates a group of UEs (e.g., group # ) Do not monitor PDCCH and / or do not start the DRX ON duration timer in the DRX cycle.

[0118] In another example, the indication may be of length and each bit is associated with a group of UEs (e.g., the first Bit and Group# associated with the UE, where the association may be configured by a higher layer parameter or determined based on the UE ID), or with the DRX ON duration in the DRX ON duration set (e.g., DRX ON duration # ) are associated.

[0119] For example, a bit in a bitmap that takes on a value of 1 (e.g., bits) indicates a group of UEs (e.g., group # UE) during the corresponding DRX ON duration (e.g., DRX ON duration # ) and / or start a corresponding DRX ON duration timer in the DRX cycle (e.g., for DRX ON duration # ),in (For example, in the bitmap Before and including The number of 1 bits, and is the bit in the bitmap ); For another example, a bit in the bitmap that takes a value of 0 (e.g., the first bit in the bitmap) bits) indicates a group of UEs (e.g., group # ) Do not monitor PDCCH and / or do not start the DRX ON duration timer in the DRX cycle.

[0120] In yet another example, the indication may be of length A bitmap, where is the number of subgroups in a group of UEs (e.g. provided by higher layer parameters), and each bit is associated with a subgroup of UEs (e.g. the first bit in the bitmap). Bitwise and Subgroups# associated with the DRX ON duration in the DRX ON duration set (e.g., DRX ON duration # ) are associated.

[0121] For example, a bit in the bitmap that takes on a value of 1 (for example, bits) indicates a group of UEs (e.g., group # ) during the corresponding DRX ON duration (e.g., DRX ON duration # ) and / or start a corresponding DRX ON duration timer in the DRX cycle (e.g., for DRX ON duration # ).

[0122] For another example, a bit in the bitmap that takes a value of 0 (e.g., the first bit in the bitmap) bits) indicates a group of UEs (e.g., group # ) Do not monitor PDCCH and / or do not start the DRXON duration timer in the DRX cycle.

[0123] In yet another example, the indication may be of length and each bit is associated with a group of UEs (e.g., the first Bitwise and Groups# associated with the UE, where the association may be configured by a higher layer parameter or determined based on the UE ID), or with the DRX ON duration in the DRX ON duration set (e.g., DRX ON duration # ) are associated with.

[0124] For example, a bit in the bitmap that takes on a value of 1 (for example, the first bits) indicates a group of UEs (e.g., group # ) during the corresponding DRX ON duration (e.g., DRX ON duration # ) and / or start a corresponding DRX ON duration timer in the DRX cycle (e.g., for DRX ON duration # ),in, And if If any of is 1, then ;otherwise (For example, is the bit in the bitmap value).

[0125] For another example, a bit in the bitmap that takes a value of 0 (e.g., the first bit in the bitmap) bits) indicates a group of UEs (e.g., group # ) Do not monitor PDCCH and / or do not start the DRXON duration timer in the DRX cycle.

[0126] In another example, if UE 116 does not detect WUS information from WUS-O, UE 116 may follow conventional procedures according to examples of the present disclosure (e.g., Figure 8 ).

[0127] In one embodiment, UE 116 monitors PDCCH in WUS-0 according to one or more examples described herein.

[0128] In one example, the PDCCH MO for the WUS may be determined according to a common search space set. In one example, the common search space (CSS) set may be a Type3-PDCCH CSS set. In another example, the CSS set may be a new type of CSS set.

[0129] In another example, the UE 116 monitors one WUS-O per DRX cycle.

[0130] In yet another example, WUS-O may be supported at least in the RRC_CONNECTED state.

[0131] In yet another example, in multi-beam operation, the UE 116 assumes that the same WUS information for a group of UEs is repeated in all transmitted beams. In addition, for example, at least in the case where the UE 116 is not provided with a beam configuration for receiving the WUS information, the selection of the beam for receiving the WUS information may depend on the implementation of the UE 116. For example, the UE may be instructed to monitor the PDCCH in a first control resource set (CORESET) associated with a first transmission configuration indication (TCI) state and to monitor the PDCCH in a second CORESET associated with a second TCI state. Prior to the same DRX cycle, the UE may receive a first PDCCH in a first CORESET providing a first DCI format with an indication of whether the UE should monitor the PDCCH for the ON duration of a subsequent consecutive DRX cycle, and receive a second PDCCH in a second CORESET providing a second DCI format with the same indication as the first DCI format.

[0132] In yet another example, PDCCH MOs for WUS that do not overlap with UL symbols (eg, provided by a time division duplex (TDD) UL / DL configuration) may be sequentially numbered starting from zero, starting from the first PDCCH monitoring opportunity for WUS in WUS-O.

[0133] In yet another example, upon detecting WUS information within a WUS-O, the UE 116 does not need to monitor subsequent monitoring occasions associated with the same WUS-O.

[0134] In yet another example, if UE 116 monitors PDCCH MO for WUS information according to a CSS set and UE 116 is instructed to skip PDCCH monitoring, UE 116 may continue to monitor PDCCH MO for information of WUS (eg, ignoring the indication to skip PDCCH monitoring for WUS).

[0135] Fig.10 An example of a flowchart of a method 1000 for a UE process according to an embodiment of the present disclosure is shown. For example, Fig.10 The method 1000 may be composed of Figure 1 Any one of UEs 111-116 (e.g., Figure 3 UE 116) and the corresponding method may be performed by Figure 1 Any of BS 101-103 (e.g. Figure 2The method 1000 is for illustration only, and other embodiments may be used without departing from the scope of the present disclosure.

[0136] The DRX ON duration set may be provided to the UE via a higher layer parameter (1001). The UE 116 may also be provided with a configuration for the WUS-O (1002). The UE 116 monitors the PDCCH in the MO included in the WUS-O (1003). If the UE 116 detects the PDCCH, the UE 116 may determine the DCI format carried by the PDCCH (1004). According to one or more examples of the present disclosure, the UE 116 may also determine whether to monitor the PDCCH and / or start the DRX ON duration timer in the DRX ON duration set based on an indication in the DCI format (1005).

[0137] Although the drawings show different examples of user equipment, various changes may be made to the drawings. For example, the user equipment may include any number of each component in any suitable arrangement. In general, the drawings do not limit the scope of the present disclosure to any particular configuration. In addition, although the drawings show operating environments in which various user equipment features disclosed in this patent document may be used, these features may be used in any other suitable system.

[0138] Any of the above-mentioned variant embodiments may be used independently or in combination with at least one other variant embodiment.

[0139] The above flow charts illustrate example methods that can be implemented according to the principles of the present disclosure, and various changes can be made to the methods shown in the flow charts herein. For example, although shown as a series of steps, the individual steps in each figure can overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, steps can be omitted or replaced with other steps.

[0140] Although the present disclosure has been described by exemplary embodiments, various changes and modifications may be suggested by those skilled in the art. The present disclosure is intended to include such changes and modifications that fall within the scope of the appended claims. Any description in this application should not be interpreted as implying that any particular element, step or function is an essential element that must be included in the scope of the claims. The scope of the patent subject matter is defined by the claims.

[0141] A base station (BS) in a wireless communication system, the BS comprising: a transceiver; and a controller coupled to the transceiver, the controller being configured to: send configuration information to a user equipment (UE), the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH), send a PDCCH for a downlink control information (DCI) format to the UE in at least one transmission opportunity based on the transmission opportunity, and based on an indication in the DCI format, send a PDCCH for a continuous period after sending a first PDCCH in the ... The second PDCCH is sent to the UE within at least one DRX ON duration of the DRX ON durations, and the indication in the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0142] The DRX ON durations do not overlap in the time domain, and the controller is further configured to: send an offset of the DRX ON duration and an interval between consecutive DRX ON durations to the UE via higher layer signaling, and determine the DRX ON duration based on the offset and the interval, the DRX ON durations have a common DRX cycle, and the higher layer parameters include the common DRX cycle.

[0143] The controller is also configured to: determine the time domain position of the transmission opportunity based on the time offset of the DRX ON duration, send information indicating the time offset to the UE via higher layer signaling, send information indicating at least one of the transmission opportunities for PDCCH to the UE via higher layer signaling, and send an indication of the position of the bitmap in the DCI format to the UE via higher layer signaling.

[0144] The transmission opportunities for PDCCH include transmission opportunity, higher-level parameters include and , and with ) transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS and the first reference signal RS associated with the PDCCH transmission in the first transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, wherein, ,and .

[0145] A user equipment (UE) in a wireless communication system, the UE comprising: a transceiver and a controller coupled to the transceiver, the controller being configured to: receive configuration information from a base station, the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH), receive a PDCCH for a downlink control information (DCI) format from the base station in at least one transmission opportunity based on the transmission opportunity, and transmit a continuous DCI format after receiving a first PDCCH from the base station based on an indication in the DCI format. During at least one DRX ON duration of the DRX ON durations, a second PDCCH is received from the base station, and the indication in the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0146] The DRX ON durations do not overlap in the time domain, and the controller is further configured to: receive an offset of the DRX ON duration and an interval between consecutive DRX ON durations from a base station via higher layer signaling, and determine the DRX ON duration based on the offset and the interval, wherein the DRX ON durations have a common DRX cycle, and the higher layer parameters include the common DRX cycle.

[0147] The processor is also configured to: determine the time domain position of the transmission opportunity based on the time offset of the DRX ON duration, receive information indicating the time offset from the base station via higher layer signaling, receive information indicating at least one of the transmission opportunities for PDCCH from the base station via higher layer signaling, and receive an indication of the position of the bitmap in the DCI format from the base station via higher layer signaling.

[0148] PDCCH transmission opportunities include: transmission opportunity, higher-level parameters include and , and with ) transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS and the first reference signal RS associated with the PDCCH transmission in the first transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, ,and .

[0149] A method performed by a base station in a wireless communication system, the method comprising: sending configuration information to a user equipment (UE), the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH), sending a PDCCH for downlink control information (DCI) format to the UE in at least one transmission opportunity based on the transmission opportunity; and sending a PDCCH for downlink control information (DCI) format to the UE in consecutive transmission opportunities after sending a first PDCCH based on an indication in the DCI format. The second PDCCH is sent to the UE during at least one DRX ON duration of the DRX ON durations, and the indication in the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0150] The DRX ON durations do not overlap in the time domain, and the method further includes: sending an offset of the DRX ON duration and an interval between consecutive DRX ON durations to the UE via higher layer signaling; and determining the DRX ON duration based on the offset and the interval, the DRX ON durations having a common DRX cycle, and the higher layer parameters including the common DRX cycle.

[0151] The method also includes: determining the time domain position of the transmission opportunity based on the time offset of the DRX ON duration; sending information indicating the time offset to the UE via higher layer signaling; sending information indicating at least one transmission opportunity among the transmission opportunities for PDCCH to the UE via higher layer signaling; and sending an indication of the position of the bitmap in the DCI format to the UE via higher layer signaling.

[0152] The transmission opportunities for PDCCH include Transmission timing, higher layer parameters include and , and with ) transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS and the first reference signal RS associated with the PDCCH transmission in the first transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, ,and .

[0153] A method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving configuration information from a base station, the configuration information comprising information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH); based on the transmission opportunity, receiving a PDCCH for a downlink control information (DCI) format from the base station in at least one transmission opportunity; and based on an indication in the DCI format, transmitting a PDCCH in a continuous period after receiving a first PDCCH from the base station. During at least one DRX ON duration of the DRX ON durations, a second PDCCH is received from the base station, and the indication in the DCI format is of size The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0154] The DRX ON durations do not overlap in the time domain, and the method further includes: receiving an offset of the DRX ON duration and an interval between consecutive DRX ON durations from a base station via higher layer signaling, and determining the DRX ON duration based on the offset and the interval, the DRX ON durations having a common DRX cycle, and the higher layer parameters including the common DRX cycle.

[0155] The method also includes: determining the time domain position of the transmission opportunity based on the time offset of the DRX ON duration; receiving information indicating the time offset from the base station via higher layer signaling; receiving information indicating at least one transmission opportunity among the transmission opportunities for PDCCH from the base station via higher layer signaling; and receiving an indication of the position of the bitmap in the DCI format from the base station via higher layer signaling.

[0156] A base station (BS) in a wireless communication system, the BS comprising: a transceiver, the transceiver being configured to send a higher layer parameter; and a processor, the processor being operably coupled to the transceiver, the processor being configured to determine a discontinuous reception (DRX) ON duration based on the higher layer parameter, and to determine a transmission opportunity for a physical downlink control channel (PDCCH) based on the higher layer parameter, wherein a first PDCCH from among the PDCCHs provides a downlink control information (DCI) format, wherein the transceiver is further configured to send the first PDCCH in at least one of the transmission opportunities, and the processor is further configured to determine, based on an indication in the DCI format, whether to indicate that the transceiver should continuously transmit the first PDCCH after the first PDCCH is sent. The second PDCCH is sent within at least one DRX ON duration starting from the DRX ON duration, and the indication of the DCI format is a size of The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0157] In addition, the DRX ON durations do not overlap in the time domain, the transceiver is further configured to send an offset of the DRX ON duration and an interval between consecutive DRX ON durations through higher layer signaling, and the processor is further configured to determine the DRX ON duration based on the offset and the interval.

[0158] Furthermore, the DRX ON duration has a common DRX cycle and higher layer parameters include the common DRX cycle.

[0159] In addition, the processor is further configured to determine a time domain position of a transmission opportunity based on a time offset to the DRX ON duration, and the transceiver is further configured to send information indicating the time offset through higher layer signaling.

[0160] Furthermore, the transceiver is further configured to transmit, through higher layer signaling, information indicating at least one of the transmission opportunities for the PDCCH.

[0161] Furthermore, the transceiver is further configured to send an indication of a location of the bitmap of the DCI format to a user equipment (UE) through higher layer signaling.

[0162] In addition, the transmission opportunities for PDCCH include transmission opportunity, higher-level parameters include and , and with ) transmission opportunity and the first reference signal (RS) associated with the PDCCH transmission in the first The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, wherein ,and .

[0163] In addition, a user equipment (UE) in a wireless communication system, the UE comprising: a transceiver, the transceiver configured to receive a higher layer parameter; and a processor, the processor being operably coupled to the transceiver, the processor being configured to determine a discontinuous reception (DRX) ON duration based on the higher layer parameter, and to determine a reception timing for a physical downlink control channel (PDCCH) based on the higher layer parameter, wherein a first PDCCH from among the PDCCHs provides a downlink control information (DCI) format, wherein the transceiver is further configured to receive the first PDCCH in at least one reception timing from among the reception timings, wherein the processor is further configured to determine, based on an indication in the DCI format, whether to indicate that the transceiver should continuously receive the DRX after receiving the first PDCCH The second PDCCH is received in at least one DRX ON duration within the DRX ON duration, and the indication in the DCI format is of size The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0164] In addition, a user equipment (UE) in a wireless communication system, the method includes: receiving a higher layer parameter; determining a discontinuous reception (DRX) ON duration based on the higher layer parameter, and determining a reception timing for a physical downlink control channel (PDCCH) based on the higher layer parameter, wherein a first PDCCH from among the PDCCHs provides a downlink control information (DCI) format; receiving the first PDCCH in at least one of the reception timings; and determining whether to receive the DCI in a continuous period after receiving the first PDCCH based on an indication in the DCI format. The second PDCCH is received within at least one DRX ON duration of the DRX ON durations, wherein: The indication in the DCI format is of size The bitmap, and the bitmap The bits are The DRX ON duration is associated with the DRX ON duration.

[0165] In addition, it also includes: determining that the DRX ON duration does not overlap in the time domain; receiving an offset of the DRX ON duration and an interval between consecutive DRX ON durations via higher layer signaling; determining the DRX ON duration based on the offset and the interval; and determining a reception timing for the PDCCH including receive opportunities, higher-level parameters include and , and ) reception opportunity and the first reference signal (RS) associated with the PDCCH reception in the first reception opportunity The second RS quasi-co-location associated with the PDCCH reception in the reception opportunity, wherein ,and .

[0166] Furthermore, the DRX ON duration has a common DRX cycle and higher layer parameters include the common DRX cycle.

[0167] In addition, the method further includes: receiving information indicating a time offset for the DRX ON duration via higher layer signaling; and determining a time domain position of a reception opportunity for the PDCCH based on the time offset for the DRX ON duration.

[0168] Furthermore, receiving information indicating at least one transmission opportunity within a reception opportunity for the PDCCH via higher layer signaling is also included.

[0169] Also included is receiving an indication of a location for a bitmap in a DCI format via higher layer signaling.

[0170] Fig.11 The structure of a UE according to an embodiment of the present disclosure is shown.

[0171] like Fig.11 As shown, the UE according to the embodiment may include a transceiver 1110, a memory 1120, and a processor 1130. The transceiver 1110, the memory 1120, and the processor 1130 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 1130, the transceiver 1110, and the memory 1120 may be implemented as a single chip. In addition, the processor 1130 may include at least one processor. In addition, Fig.11 The UEs correspond to Figure 1 UE 101.

[0172] The transceiver 1110 is collectively referred to as a UE receiver and a UE transmitter, and can send / receive signals to / from a base station or a network entity. The signals sent to or received from a base station or a network entity may include control information and data. The transceiver 1110 may include an RF transmitter for up-converting and amplifying the frequency of a transmitted signal, and an RF receiver for amplifying low noise and down-converting the frequency of a received signal. However, this is only an example of the transceiver 1110, and the components of the transceiver 1110 are not limited to the RF transmitter and the RF receiver.

[0173] In addition, the transceiver 1110 may receive a signal through a wireless channel and output it to the processor 1130 , and transmit a signal output from the processor 1130 through a wireless channel.

[0174] The memory 1120 may store programs and data required for the operation of the UE. In addition, the memory 1120 may store control information or data included in a signal obtained by the UE. The memory 1120 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.

[0175] The processor 1130 may control a series of processes so that the UE operates as described above. For example, the transceiver 1110 may receive a data signal including a control signal sent by a base station or a network entity, and the processor 1130 may determine a result of receiving the control signal and the data signal sent by the base station or the network entity.

[0176] Fig.12 The structure of a base station according to an embodiment of the present disclosure is shown.

[0177] like Fig.12 As shown, the base station according to the embodiment may include a transceiver 1210, a memory 1220, and a processor 1230. The transceiver 1210, the memory 1220, and the processor 1230 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 1230, the transceiver 1210, and the memory 1220 may be implemented as a single chip. In addition, the processor 1230 may include at least one processor. In addition, Fig.12 The base station corresponds to a base station (eg, Figure 2 NG-RAN 202 or Figure 1 E-UTRAN 102).

[0178] The transceiver 1210 is collectively referred to as a base station receiver and a base station transmitter, and can send / receive signals to / from a terminal (UE) or a network entity. The signals sent to or received from the terminal or the network entity may include control information and data. The transceiver 1210 may include an RF transmitter for up-converting and amplifying the frequency of the transmitted signal, and an RF receiver for amplifying low noise and down-converting the frequency of the received signal. However, this is only an example of the transceiver 1210, and the components of the transceiver 1210 are not limited to the RF transmitter and the RF receiver.

[0179] In addition, the transceiver 1210 may receive a signal through a wireless channel and output it to the processor 1230 , and transmit a signal output from the processor 1230 through a wireless channel.

[0180] The memory 1220 may store programs and data required for the base station to operate. In addition, the memory 1220 may store control information or data included in a signal obtained by the base station. The memory 1220 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.

[0181] The processor 1230 may control a series of processes so that the base station operates as described above. For example, the transceiver 1210 may receive a data signal including a control signal transmitted by a terminal, and the processor 1230 may determine a result of receiving the control signal and the data signal transmitted by the terminal.

Claims

1. A base station BS in a wireless communication system, the BS comprising: Transceiver; as well as a controller coupled to the transceiver and configured to: Sending configuration information to a user equipment UE, the configuration information including information associated with a discontinuous reception DRX ON duration and a transmission opportunity for a physical downlink control channel PDCCH, Based on the transmission opportunity, sending a PDCCH in a downlink control information (DCI) format to the UE in at least one transmission opportunity, and Based on the indication in the DCI format, the continuous sending a second PDCCH to the UE during at least one DRX ON duration of the DRX ON durations, in: The indication in the DCI format is of size bitmap, and The bitmap The bits are respectively The DRX ON duration is associated with the DRX ON duration.

2. The BS according to claim 1, wherein: The DRX ON durations do not overlap in the time domain, The controller is also configured to: sending the DRX ON duration offset and the interval between consecutive DRX ON durations to the UE via higher layer signaling, and determining the DRX ON duration based on the offset and the interval, The DRX ON duration has a common DRX cycle, and Higher layer parameters include the common DRX cycle.

3. The BS according to claim 1, wherein: The controller is also configured to: determining a time domain position of the transmission opportunity based on a time offset of the DRX ON duration, sending information indicating the time offset to the UE via higher layer signaling, sending information indicating at least one of the transmission opportunities for the PDCCH to the UE via higher layer signaling, and An indication of a location of a bitmap in the DCI format is sent to the UE via higher layer signaling.

4. The BS according to claim 1, wherein: The transmission opportunities for the PDCCH include Transmission time, Higher level parameters include and ,and With ) transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS and the first reference signal RS associated with the PDCCH transmission in the first transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, wherein, ,and .

5. A user equipment UE in a wireless communication system, the UE comprising: Transceiver; as well as a controller coupled to the transceiver and configured to: receiving configuration information from a base station, the configuration information including information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH), Based on the transmission opportunity, receiving a PDCCH for downlink control information (DCI) format from the base station in at least one transmission opportunity, and Based on the indication in the DCI format, the continuous receiving a second PDCCH from the base station within at least one DRX ON duration of the DRX ON durations, in: The indication in the DCI format is of size bitmap, and The bitmap The bits are respectively The DRX ON duration is associated with the DRX ON duration.

6. The UE according to claim 5, wherein: The DRX ON durations do not overlap in the time domain, The controller is also configured to: receiving an offset of the DRX ON duration and an interval between consecutive DRX ON durations from the base station via higher layer signaling, and determining the DRX ON duration based on the offset and the interval, The DRX ON duration has a common DRX cycle, and Higher layer parameters include the common DRX cycle.

7. The UE according to claim 5, wherein: The processor is further configured to: determining a time domain position of the transmission opportunity based on a time offset of the DRX ON duration, receiving information indicating the time offset from the base station via higher layer signaling, receiving information indicating at least one of the transmission opportunities for the PDCCH from the base station via higher layer signaling, and An indication of a location for a bitmap in the DCI format is received from the base station via higher layer signaling.

8. The UE according to claim 5, wherein: The transmission opportunities for the PDCCH include Transmission time, Higher level parameters include and ,and With ) transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS and the first reference signal RS associated with the PDCCH transmission in the first transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, wherein, ,and .

9. A method performed by a base station in a wireless communication system, the method comprising: Sending configuration information to a user equipment UE, the configuration information including information associated with a discontinuous reception DRX ON duration and a transmission opportunity for a physical downlink control channel PDCCH, Based on the transmission opportunity, sending a PDCCH for downlink control information (DCI) format to the UE in at least one transmission opportunity; and Based on the indication in the DCI format, the continuous sending a second PDCCH to the UE during at least one DRX ON duration of the DRX ON durations, in: The indication in the DCI format is of size bitmap, and The bitmap The bits are respectively The DRX ON duration is associated with the DRX ON duration.

10. The method according to claim 9, wherein: The DRX ON durations do not overlap in the time domain, The method further comprises: sending the offset of the DRX ON duration and an interval between consecutive DRX ON durations to the UE via higher layer signaling; and determining the DRX ON duration based on the offset and the interval, in: The DRX ON duration has a common DRX cycle, and Higher layer parameters include the common DRX cycle.

11. The method according to claim 9, further comprising: Determining a time domain position of a transmission opportunity based on a time offset of the DRX ON duration; sending information indicating the time offset to the UE via higher layer signaling; sending, via higher layer signaling, information indicating at least one of the transmission opportunities for the PDCCH to the UE; as well as An indication of a location of a bitmap in the DCI format is sent to the UE via higher layer signaling.

12. The method according to claim 9, wherein: The transmission opportunities for the PDCCH include Transmission time, Higher level parameters include and ,and With ) transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS and the first reference signal RS associated with the PDCCH transmission in the first transmission opportunity in which the PDCCH transmission is associated with the first reference signal RS The second RS associated with the PDCCH transmission in the transmission opportunity is quasi co-located, wherein, ,and .

13. A method performed by a user equipment UE in a wireless communication system, the method comprising: receiving configuration information from a base station, the configuration information including information associated with a discontinuous reception (DRX) ON duration and a transmission opportunity for a physical downlink control channel (PDCCH), Based on the transmission opportunity, receiving a PDCCH for downlink control information (DCI) format from the base station in at least one transmission opportunity; and Based on the indication in the DCI format, the continuous receiving a second PDCCH from the base station within at least one DRX ON duration of the DRX ON durations, in: The indication in the DCI format is of size bitmap, and The bitmap The bits are respectively The DRX ON duration is associated with the DRX ON duration.

14. The method according to claim 13, wherein: The DRX ON durations do not overlap in the time domain, The method further comprises: receiving an offset of the DRX ON duration and an interval between consecutive DRX ON durations from the base station via higher layer signaling, and determining the DRX ON duration based on the offset and the interval, in: The DRX ON duration has a common DRX cycle, and Higher layer parameters include the common DRX cycle.

15. The method according to claim 13, further comprising: determining a time domain position of the transmission opportunity based on a time offset of the DRX ON duration; receiving information indicating the time offset from the base station via higher layer signaling; receiving, from the base station via higher layer signaling, information indicating at least one of the transmission opportunities for the PDCCH; as well as An indication of a location for a bitmap in the DCI format is received from the base station via higher layer signaling.

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