Method and apparatus for network parameter adaptation

Abstract

A method and apparatus for network parameter adaptation in a wireless communication system are provided. The method includes receiving first information related to operating states on a cell, where a first one of the operating states includes a first parameter associated with transmission of a channel or signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain, and a second one of the operating states includes a second parameter associated with transmission of the channel or signal on the cell in one or more of the power domain, the spatial domain, the time domain, and the frequency domain. Second information related to a search space set for receiving a physical downlink control channel (PDCCH), in which the PDCCH of the PDCCH provides a downlink control information (DCI) format indicating one or more of the operating states, and the PDCCH; determining a parameter in one or more of a power domain, a spatial domain, a time domain, and a frequency domain based on the one or more operating states indicated by the DCI format; and receiving the channel or signal on the cell based on the parameter.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems, and more particularly, to network parameter adaptation in wireless communication systems. Background Art

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

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

[0004] Currently, in view of the services that 5G mobile communication technology is to support, discussions are underway on improvements and performance enhancements of initial 5G mobile communication technology, and there is already physical layer standardization on various technologies such as: V2X (Vehicle to Everything) for assisting driving determination of autonomous vehicles based on information about the location and status of the vehicle sent by the vehicle and for enhancing user convenience, NR-U (New Radio Unlicensed) for system operation intended to comply with various regulatory-related requirements in unlicensed bands, NR UE power saving, Non-Terrestrial Network (NTN) as UE-satellite direct communication for providing coverage in areas where communication with terrestrial networks is unavailable, and positioning.

[0005] In addition, in terms of air interface architecture / protocol, standardization is being conducted on various technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and integration with other industries, IAB (Integrated Access and Backhaul) for providing nodes for network service area expansion by supporting wireless backhaul links and access links in an integrated manner, mobility 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. In terms of system architecture / service, standardization is also being conducted on various technologies such as 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] As 5G mobile communication systems are commercialized, the number of connected devices, which has been growing exponentially, will be connected to the communication network, and it is therefore expected that enhanced functions and performance of the 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research related to the following technologies is planned: extended reality (XR) for effective support of AR (augmented reality), VR (virtual reality), MR (mixed reality), etc., 5G performance improvement and complexity reduction by utilizing artificial intelligence (AI) and machine learning (ML), AI service support, metaverse service support, and drone communication.

[0007] Furthermore, such development of 5G mobile communication systems will serve as a basis not only for the development of new waveforms for providing coverage in the terahertz band for 6G mobile communication technology, multi-antenna transmission technologies (such as full-dimensional MIMO (FD-MIMO), array antennas, and massive antennas), metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional spatial multiplexing technologies using OAM (orbital angular momentum), and RIS (Reconfigurable Smart Surfaces), but also for the development of full-duplex technologies for improving frequency efficiency and improving system networks for 6G mobile communication technology, AI-based communication technologies for achieving system optimization by utilizing satellites and AI (artificial intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technologies for achieving services with a complexity level that exceeds the limits of UE operating capabilities by utilizing ultra-high performance communication and computing resources.

[0008] 5th Generation (5G) or New Radio (NR) mobile communications are gathering more and more momentum recently with all the global technical activities from industry and academia on various candidate technologies. Candidate enablers for 5G / NR mobile communications include massive antenna technologies from traditional cellular frequency bands to high frequencies to provide beamforming gain and support increased capacity, new waveforms (e.g., new radio access technologies (RATs)) to flexibly adapt to various services / applications with different requirements, new multiple access schemes to support massive connections, and so on. Summary of the invention

[0009] Technical issues

[0010] The present disclosure proposes a method and apparatus for network parameter adaptation in a wireless communication system.

[0011] The technical subject matter pursued in the present disclosure may not be limited to the above-mentioned technical subject matter, and other technical subject matter not mentioned may be clearly understood by those skilled in the art to which the present disclosure belongs through the following description.

[0012] Solution to the problem

[0013] In one embodiment, a method for a user equipment (UE) is provided. The method includes receiving: first information related to an operating state on a cell and second information related to a search space set for receiving a physical downlink control channel (PDCCH). A first operating state in an operating state includes a first parameter associated with transmission of a channel or signal on a cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain. A PDCCH in a PDCCH provides a downlink control information (DCI) format indicating one or more operating states in an operating state. The method also includes: receiving the PDCCH; determining parameters in one or more of a power domain, a spatial domain, a time domain, and a frequency domain based on one or more operating states indicated by the DCI format; and receiving a channel or signal on a cell based on the parameters.

[0014] In another embodiment, a UE is provided. The UE includes a transceiver configured to receive first information related to an operating state on a cell, second information related to a search space set for receiving a physical downlink control channel (PDCCH), and a PDCCH in the PDCCH. The PDCCH provides a downlink control information (DCI) format indicating one or more operating states in the operating state. The first operating state in the operating state includes a first parameter associated with the transmission of a channel or signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain. The UE also includes a processor operably coupled to the transceiver. The processor is configured to determine parameters in one or more of a power domain, a spatial domain, a time domain, and a frequency domain based on one or more operating states indicated by the DCI format. The transceiver is also configured to receive a channel or signal on the cell based on the parameters.

[0015] In yet another embodiment, a base station is provided. The base station includes a transceiver configured to send first information related to an operating state on a cell and second information related to a search space set for sending a physical downlink control channel (PDCCH). The first operating state in the operating state includes a first parameter associated with the transmission of a channel or signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain. The PDCCH in the PDCCH provides a DCI format indicating one or more operating states in the operating state. The base station also includes a processor operably coupled to the transceiver. The processor is configured to determine parameters in one or more of a power domain, a spatial domain, a time domain, and a frequency domain. The transceiver is also configured to send a PDCCH and a channel or signal having a DCI format indicating one or more operating states on the cell based on the parameters.

[0016] Other technical features may be clear to those skilled in the art from the following drawings, descriptions and claims.

[0017] Before carrying out the following specific implementation, it may be beneficial to set forth the definitions of certain words and phrases used throughout this patent document. The term "coupling" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not these elements are in physical contact with each other. The terms "send", "receive" and "communication" and their derivatives include both direct and indirect communication. The terms "include" and "comprise" and their derivatives mean unlimited inclusion. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives refer to including, being included in, interconnected with, being included in, being connected to or connected with, being coupled to or coupled with, being communicable with, cooperating with, interweaving, juxtaposing, approaching, being combined with or combined with, having, having... attributes, having a relationship with or having a relationship with, etc. The term "controller" means any device, system or part thereof that controls at least one operation. Such a controller can be implemented in hardware or a combination of hardware and software and / or firmware. The functions associated with any particular controller can be centralized or distributed, whether locally or remotely. When used with a list of items, the phrase "at least one of..." means that different combinations of one or more of the listed items can be used, and only one of the items in the list may be required. For example, "at least one of A, B, and C" includes any combination of A, B, C, A and B, A and C, B and C, and A, B, and C.

[0018] In addition, the various functions described below can 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-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that transmit temporary electrical or other signals. Non-transitory computer-readable media include media in which data can be permanently stored and media in which data can be stored and overwritten later, such as rewritable optical disks or erasable storage devices.

[0019] Definitions for certain other words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most, instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

[0020] Advantageous Effects of the Invention

[0021] The present disclosure provides an effective and efficient method for network parameter adaptation in a wireless communication system.

[0022] Advantageous effects obtainable according to the present disclosure may not be limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present disclosure belongs through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts:

[0024] Figure 1 An example of a wireless network according to an embodiment of the present disclosure is shown;

[0025] Figure 2 An example of a gNB according to an embodiment of the present disclosure is shown;

[0026] Figure 3 An example of a UE according to an embodiment of the present disclosure is shown;

[0027] Figure 4 and Figure 5 shows examples of wireless transmit and receive paths according to the present disclosure;

[0028] Figure 6 An example of a timing diagram showing NW operation state transitions according to the present disclosure is shown;

[0029] Figure 7 A flow chart showing a method for NW indicating and activating NW operating status according to an embodiment of the present disclosure is shown;

[0030] Figure 8 A flowchart of a method for UE to receive and activate NW operation state according to an embodiment of the present disclosure is shown;

[0031] Fig. 9 An example of a timing diagram showing NW operation state transitions according to the present disclosure is shown;

[0032] Fig.10 A flowchart of a UE method for NW operation state switching via DCI indicating a NW operation state index according to an embodiment of the present disclosure is shown;

[0033] Fig.11 An example of a timing diagram showing a series of NW operating state transitions according to the present disclosure;

[0034] Fig.12 A flowchart showing a method for indicating a DCI format of a series of NW operation states according to an embodiment of the present disclosure is shown;

[0035] Fig.13 An example of a timing diagram showing NW operation state transitions according to the present disclosure is shown;

[0036] Fig.14 A flow chart showing a method for timer-based NW operation state transition according to an embodiment of the present disclosure is shown;

[0037] Fig.15 An example of a timing diagram showing NW operating state transitions and next PDCCH monitoring opportunity indications according to an indication received in an indicated next PDCCH monitoring opportunity according to the present disclosure; and

[0038] Fig.16 A flowchart of a method for indicating a NW operation state and a next PDCCH monitoring opportunity for the DCI format through a DCI format according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0039] Network parameter adaptation in a wireless communication system. A method for a user equipment (UE) includes: receiving first information related to an operating state on a cell and second information related to a search space set for receiving a physical downlink control channel (PDCCH). A first operating state in the operating state includes a first parameter associated with transmission of a channel or signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain. The PDCCH in the PDCCH provides a downlink control information (DCI) format indicating one or more operating states in the operating state. The method also includes: receiving the PDCCH; determining parameters in one or more of the power domain, the spatial domain, the time domain, and the frequency domain based on the one or more operating states indicated by the DCI format; and receiving the channel or signal on the cell based on the parameters.

[0040] Discussed below Figures 1 to 16 The various embodiments used to describe the principles of the present disclosure in this patent document are for illustration only 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.

[0041] The following documents are incorporated by reference into the present disclosure as if fully set forth herein: 3GPP TS 38.211 v17.2.0, “NR; Physical channels and modulation”; 3GPP TS 38.212 v17.2.0, “NR; Multiplexing and Channel coding”; 3GPP TS 38.213 v17.2.0, “NR; Physical Layer Procedures for Control”; 3GPP TS 38.214 v17.2.0, “NR; Physical Layer Procedures for Data”; 3GPP TS 38.321 v17.1.0, “NR; Medium Access Control (MAC) protocol specification” and 3GPP TS 38.331 v17.1.0, “NR; Radio Resource Control (RRC) Protocol Specification”.

[0042] 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 currently being deployed. 5G / NR communication systems are considered to be implemented in high-frequency (mmWave) bands (e.g., 28 GHz or 60 GHz bands) to achieve high data rates, or in low-frequency bands (such as 6 GHz) to achieve robust coverage and mobility support. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are discussed in 5G / NR communication systems.

[0043] 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-side interference cancellation, etc.

[0044] The discussion of 5G systems and frequency bands associated therewith is for reference, as certain embodiments of the present disclosure may be implemented in 5G systems. However, the present disclosure is not limited to 5G systems or frequency bands associated therewith, and embodiments of the present disclosure may be used in conjunction with any frequency band. For example, aspects of the present disclosure may also be applied to the deployment of 5G communication systems, 6G, or even later versions that may use terahertz (THz) frequency bands.

[0045] The following Figure 1-Figure 3 Various 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. Figure 1-Figure 3 The description is not meant to imply physical or architectural limitations to the manner in which different embodiments may be implemented. Different embodiments of the present disclosure may be implemented in any suitably arranged communications system.

[0046] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown. Figure 1 The embodiment of the wireless network shown is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0047] like Figure 1 As shown, the wireless network 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).

[0048] 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 such as a cellular phone, a wireless laptop, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within 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.

[0049] Depending on the network type, the term "base station" or "BS" may refer to any component (or collection of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission-reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G / NR base station (gNB), a macro cell, a femto cell, a WiFi access point (AP), or other wireless enabling devices. The base station may provide wireless access according to one or more wireless communication protocols (e.g., 5G / NR Third Generation Partnership Project (3GPP) NR, Long Term Evolution (LTE), LTE Advanced (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11 a / b / g / n / ac, etc.). For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to a network infrastructure component that provides wireless access to a remote terminal. In addition, depending on the network type, the term "user equipment" or "UE" may refer to any component, such as a "mobile station", "subscriber station", "remote terminal", "wireless terminal", "reception point", or "user equipment". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered a fixed device (such as a desktop computer or vending machine).

[0050] The dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as approximately circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with 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 radio environment associated with natural and man-made obstacles.

[0051] As described in more detail below, one or more of the UEs 111-116 include circuitry, programming, or a combination thereof for identifying and / or utilizing network parameter adaptation for transmission or reception on one or more cells in the wireless communication system. In certain embodiments, one or more of the gNBs 101-103 include circuitry, programming, or a combination thereof for providing and / or supporting network parameter adaptation on one or more cells in the wireless communication system.

[0052] although Figure 1 An example of a wireless network is shown, but Figure 1Various changes may be made. For example, the wireless network 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 to 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.

[0053] 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 may have the same or similar configurations. However, gNBs have a variety of configurations, and Figure 2 The scope of this disclosure is not limited to any particular implementation of gNB.

[0054] 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.

[0055] The transceivers 210a-210n receive incoming RF signals from the antennas 205a-205n, such as signals transmitted by UEs in the 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 the controller / processor 225 and / or receive (RX) processing circuits in the transceivers 210a-210n, which generate processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The controller / processor 225 may further process the baseband signals.

[0056] The controller / processor 225 and / or transmit (TX) processing circuitry in the transceivers 210a-210n receive analog or digital data (such as 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 outgoing baseband data to generate a processed baseband or IF signal. The transceivers 210a-210n up-convert the baseband or IF signal to an RF signal that is transmitted via the antennas 205a-205n.

[0057] 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 UL channel signals and the transmission of 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 outgoing / incoming signals from / to multiple antennas 205a-205n are weighted differently to effectively direct the outgoing signals in a desired direction. The controller / processor 225 may support any of a variety of other functions in the gNB 102.

[0058] The controller / processor 225 is also capable of executing programs and other processes resident in the memory 230, such as processes for network parameter adaptation in a wireless communication system. The controller / processor 225 may move data into or out of the memory 230 as required by the executing process.

[0059] 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 over a network. The interface 235 may support communication over any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a system supporting 5G / NR, LTE, or LTE-A), the interface 235 may allow 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 may allow 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.

[0060] 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.

[0061] 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.

[0062] Figure 3An example UE 116 is shown in accordance with an embodiment of the present 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.

[0063] 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.

[0064] Transceiver 310 receives incoming RF signals from antenna 305 transmitted by a gNB of network 100. Transceiver 310 downconverts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is processed by processor 340 and / or RX processing circuitry in transceiver 310, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry transmits the processed baseband signal to speaker 330 (such as for voice data) or is processed by processor 340 (such as for web browsing data).

[0065] The processor 340 and / or the TX processing circuit in the transceiver 310 receives analog or digital voice data from the microphone 320, or receives other outgoing 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 outgoing 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.

[0066] 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 transceiver 310 to receive DL channel signals and send UL channel signals according to well-known principles. In some embodiments, the processor 340 includes at least one microprocessor or microcontroller.

[0067] Processor 340 may also be capable of executing other processes and programs resident in memory 360, such as processes for identifying and / or utilizing network parameter adaptation in a wireless communication system.

[0068] Processor 340 can move data into or out of memory 360 as needed by the executing process. In some embodiments, processor 340 is configured to execute application 362 based on OS 361 or in response to signals received from a gNB or operator. Processor 340 is also coupled to I / O interface 345, which provides UE 116 with the ability to connect to other devices such as laptops and handheld computers. I / O interface 345 is the communication path between these accessories and processor 340.

[0069] The processor 340 is also coupled to an input 350 and a display 355m, which may include, for example, a touch screen, a keyboard, etc. An operator of the UE 116 may enter data into the UE 116 using the input 350. The display 355 may be a liquid crystal display, a light emitting diode display, or other display capable of presenting text (such as from a website) and / or at least limited graphics.

[0070] 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).

[0071] 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 may be combined, further subdivided, or omitted, and additional components may be added as required. As a specific example, processor 340 may 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 may include any number of transceivers and signal processing chains, and may be connected to any number of antennas. In addition, although Figure 3 The UE 116 is shown configured as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0072] Figure 4 and Figure 5 Example wireless transmit and receive paths according to the present disclosure are shown. In the following description, transmit path 400 may be described as being implemented in a gNB (such as gNB 102) and receive path 500 may be described as being implemented in a UE (such as UE 116). However, it is understood that receive path 500 may be implemented in a gNB and transmit path 400 may be implemented in a UE. In some embodiments, receive path 500 is configured to support network parameter adaptation in a wireless communication system.

[0073] like Figure 4The transmit path 400 shown includes a channel coding and modulation block 405, a serial to parallel (S to P) block 410, a size N inverse fast Fourier transform (IFFT) block 415, a parallel to serial (P to S) block 420, an add cyclic prefix block 425, and an upconverter (UC) 430. Figure 5 The illustrated receive path 500 includes a downconverter (DC) 555 , a remove cyclic prefix block 560 , a serial to parallel (S to P) block 565 , a size-N fast Fourier transform (FFT) block 570 , a parallel to serial (P to S) block 575 , and a channel decoding and demodulation block 580 .

[0074] like Figure 4 As shown, channel coding and modulation block 405 receives a set of information bits, applies coding (such as low-density parity check (LDPC) coding), and modulates the input bits (such as with quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols.

[0075] The serial to parallel block 410 converts (such as demultiplexes) the serial modulated 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 (such as 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 before conversion to RF frequency.

[0076] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and operations opposite to those at gNB 102 are performed at UE 116.

[0077] like Figure 5 As shown, down converter 555 down-converts the received signal to baseband frequency, and removes cyclic prefix block 560 removes the cyclic prefix to generate a serial time domain baseband signal. Serial to parallel block 565 converts the time domain baseband signal into a parallel time domain signal. FFT block 570 of size N performs an FFT algorithm to generate N parallel frequency domain signals. Parallel to serial block 575 converts the parallel frequency domain signals into a modulated data symbol sequence. Channel decoding and demodulation block 580 demodulates and decodes the modulated symbols to recover the original input data stream.

[0078] Each of gNBs 101-103 may implement Figure 4The transmission path 400 shown is similar to the transmission to UE 111-116 in the downlink, and can be implemented as follows Figure 5 Receive path 500 is shown, which is similar to receiving from UE 111-116 in the uplink. Similarly, each of UE 111-116 can implement transmit path 400 for transmitting to gNB 101-103 in the uplink, and can implement receive path 500 for receiving from gNB 101-103 in the downlink.

[0079] Figure 4 and Figure 5 Each of the components in may be implemented using hardware alone or a combination of hardware and software / firmware. As a specific example, Figure 4 and Figure 5 At least some of the 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 570 and IFFT block 415 can be implemented as configurable software algorithms, where the value of size N can be modified according to the implementation.

[0080] In addition, although described as using FFT and IFFT, this is illustrative only and should not be construed as limiting the scope of the present disclosure. Other types of transforms may be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It will be appreciated that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer (such as 1, 2, 4, 8, 16, etc.) that is a power of 2.

[0081] although Figure 4 and Figure 5 An example of a wireless transmit and receive path is shown, but the Figure 4 and Figure 5 Make various changes. For example, Figure 4 and Figure 5 The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs. Figure 4 and Figure 5 It is intended to illustrate examples of the types of transmit and receive paths that may be used in a wireless network.Any other suitable architecture may be used to support wireless communications in a wireless network.

[0082] For each DL bandwidth part (BWP) indicated to the UE in the serving cell, the UE may be provided with Control Resource Sets (CORESETs). For each CORESET, the UE is provided with a CORESET index , , DM-RS scrambling sequence initialization value, precoder granularity in the frequency domain for multiple resource element groups (REGs) that the UE can assume to use the same DM-RS precoder, the number of consecutive symbols of the CORESET, the set of resource blocks (RBs) of the CORESET, control channel element (CCE) to REG (CCE-to-REG) mapping parameters, antenna port quasi-co-location in a set of antenna port quasi-co-locations, which indicates quasi-co-location information of DM-RS antenna ports for PDCCH reception in the corresponding CORESET, and information on the quasi-co-location of the DM-RS antenna ports used by the CORESET An indication of the presence or absence of the transmission configuration indication (TCI) field of DCI format 1_1 sent on the PDCCH in the DCI format 1_1.

[0083] For each DL BWP configured for a UE in a serving cell, the UE is provided by higher layers with A set of search spaces. For each search space set in the search space set, the UE is provided with a search space set index , , search space set With CORESET The relationship between s The PDCCH monitoring period of the time slot is s The PDCCH monitoring offset of each time slot, the PDCCH monitoring mode within the time slot, which indicates the first symbol of the CORESET used for PDCCH monitoring within the time slot, T s <K s The duration of time slots indicates the search space set The number of time slots that exist, the number of PDCCH candidates per CCE aggregation level L , and the search space set is an indication of whether the search space is set to CSS or USS. When the CSS is set, the UE monitors the PDCCH for detecting DCI format 2_x, where x ranges from 0 to 7, as described in TS 38.212, or for DCI formats associated with scheduling broadcast / multicast Physical Downlink Shared Channel (PDSCH) reception, and possibly for DCI format 0_0 and DCI format 1_0.

[0084] The UE determines the PDCCH monitoring timing on the active DLBWP based on the PDCCH monitoring period, PDCCH monitoring offset and PDCCH monitoring pattern in the time slot. ,if , the UE determines that the PDCCH monitoring opportunity exists in The frames in the From the time slot Initially, UE is in T s The monitoring search space set in consecutive time slots PDCCH candidates and do not monitor the search space set in the next Ks-Ts consecutive time slots The UE determines the CCE used to monitor the PDCCH according to a search space set based on the search space equation, as described in TS 38.213.

[0085] The UE is expected to monitor up to 4 sizes of PDCCH candidates of DCI formats per serving cell, including up to 3 sizes of DCI formats with CRC scrambled by C-RNTI. The UE counts the number of sizes of DCI formats per serving cell / scheduled cell based on the number of PDCCH candidates in each search space set of the corresponding active DL BWP. In the present disclosure, the constraint on the number of DCI format sizes will be referred to as DCI size limit. When the DCI size limit may be exceeded for the UE based on the configuration of the DCI formats for which the UE monitors the PDCCH, the UE will align the sizes of some DCI formats, as described in TS38.212, so that the DCI size limit may not be exceeded.

[0086] For each scheduled cell, the UE does not need to be configured in the SCS with the scheduled cell. Active DL BWP is monitored more than min per time slot ( , ) PDCCH candidates or more than min ( , ) non-overlapping CCEs, where and are respectively the maximum number of PDCCH candidates and non-overlapping CCEs of the scheduled cell, and and are the total number of PDCCH candidates and non-overlapping CCEs of the scheduled cell, respectively, as described in TS 38.213.

[0087] Except for the CSS set for multicast PDSCH scheduling, it may not be expected that the UE is configured with a CSS set that causes the corresponding total number of monitored PDCCH candidates and non-overlapping CCEs per time slot on the primary cell or the number per scheduled cell to exceed the corresponding maximum number per time slot. For USS sets or CSS sets associated with multicast PDSCH scheduling, when the number of PDCCH candidates or non-overlapping CCEs in a time slot may exceed the aforementioned limit / maximum value per time slot for scheduling on the primary cell, the UE selects USS sets or CSS sets in ascending order of the corresponding search space set indexes to monitor the corresponding PDCCH until the index of the search space set for which PDCCH monitoring may result in exceeding the maximum number of PDCCH candidates or non-overlapping CCEs per time slot for scheduling on the PCell is reached, as described in TS 38.213.

[0088] For the same cell scheduling or for the scheduling cell and the scheduled cell having the same SCS configuration For cross-carrier scheduling of DL BWP, the UE does not expect the number of PDCCH candidates and the corresponding number of non-overlapping CCEs per slot on the secondary cell to be greater than the corresponding number that the UE can monitor per slot on the secondary cell. For cross-carrier scheduling, the number of PDCCH candidates and the number of non-overlapping CCEs for monitoring per slot are counted separately for each scheduled cell.

[0089] The UE may be configured to operate with carrier aggregation (CA) for PDSCH reception on multiple cells (DL CA) or carrier aggregation (CA) for PUSCH transmission on multiple cells (UL CA). The UE may also be configured with multiple transmission-reception points (TRPs) per cell via an indication (or absence of indication) of the coresetPoolIndex of the CORESET from which the UE receives PDCCH / PDSCH from the corresponding TRP, as described in TS 38.213 and TS 38.214.

[0090] Current networks have limited capabilities to adapt to operating states in one or more of the time / frequency / spatial / power domains. For example, in NR, there are transmissions or receptions of serving gNBs that the UE always expects, such as the transmission of synchronization signal / physical broadcast channel (SS / PBCH) blocks or system information or channel state information reference signal (CSI-RS) indicated by higher layers, or the reception of physical random access channel (PRACH) or sounding reference signal (SRS) indicated by higher layers. Reconfiguration of the NW operating state involves higher layer signaling through system information blocks (SIBs) or through UE-specific RRC. This is a slow process and requires a lot of signaling overhead, especially for UE-specific RRC signaling.

[0091] For example, currently it is not practical or possible for a network in a typical deployment to enter a power saving state where the network is not transmitting or receiving due to low traffic, because in order to obtain substantial power savings, the network needs to suspend transmission or reception for tens of milliseconds, and preferably for even longer periods of time. Similar inability exists for suspending transmission or reception for shorter periods of time, because the serving gNB may need to send SS / PBCH blocks every 5 milliseconds, and in a time division duplex (TDD) system with a UL-DL configuration with few UL symbols in a period, the serving gNB may need to receive PRACH or SRS in most UL symbols in the period.

[0092] Due to the above reasons, adaptation of the NW operating state is typically performed over long periods of time (such as for off-peak hours when the service traffic is small and for peak hours when the service traffic is large). Therefore, the gNB's ability to improve service through fast adaptation of the NW operating state to traffic type and load, or to save energy by switching to a state that requires less energy consumption when the impact on service quality may be limited or no, is currently limited because there is no process for the serving gNB to perform fast adaptation of the NW operating state with little signaling overhead while notifying all UEs.

[0093] It is also beneficial to support a gradual transition of the NW operating state between a maximum state, where the NW operates at its maximum capabilities in one or more of the time / frequency / space / power domains, and a minimum state, where the NW operates at its minimum capabilities, or the NW enters a sleep mode. This may allow continued service while the NW transitions from a state with greater utilization of time / frequency / space / power resources to a state with lower utilization of these resources, or vice versa, as the UE may obtain time / frequency synchronization and AGC alignment, perform measurements and provide CSI reports or send SRS before scheduling PDSCH reception or PUSCH transmission.

[0094] Fast information exchange between the serving gNB and the UE can be achieved through physical layer signaling, and when a group of UEs or all UEs need to be notified, the physical layer signaling can be provided by control information received by the UEs in common. Therefore, the serving gNB can utilize PDCCH transmission to provide a DCI format with adaptive information about the NW operating state.

[0095] For example, in current deployments, such DCI formats are DCI format 2_0 with information adapted to TDD UL-DL configuration, as described in TS 38.213, or DCI formats 2_1, 2_2, 2_3, 2_4, 2_6, and 2_7 with information adapted to UE transmission or reception, as described in TS 38.213. Since a UE may be configured to operate on multiple cells, such as with carrier aggregation or dual connectivity, it is beneficial for the DCI format to indicate the NW operation status of multiple cells.

[0096] The NW may not always be able to send a PDCCH providing a DCI format indicating the NW operating state according to the corresponding search space set, for example, when the NW is in a sleep state or transitions to a sleep state. In order to support such operations, it is beneficial for the DCI format to also indicate to the UE the next monitoring opportunity of the PDCCH providing a DCI format indicating the NW operating state.

[0097] There may also be situations where the UE cannot monitor the PDCCH for detecting the DCI format indicating the NW operating status, especially when the period of such PDCCH monitoring is long, and then it may be beneficial for the NW to also indicate the NW operating status by the UE monitoring the DCI format of the corresponding PDCCH according to the USS set.

[0098] Therefore, there is a need to define functions and procedures for adaptation of the NW operating state.

[0099] It is also necessary to define fields of the DCI format that support functions and procedures for adaptation of NW operating states.

[0100] A DCI format is also needed to indicate multiple NW operating states and transitions among multiple NW operating states.

[0101] It is also necessary that the DCI format indicating the NW operation status further indicates the next monitoring opportunity of the PDCCH providing the DCI format.

[0102] There is also a need to enable the UE to receive a PDCCH providing an adaptive DCI format indicating the NW operating status.

[0103] In the present disclosure, some embodiments are provided for enabling a serving gNB to inform a UE of adaptation of NW operating states, such as, for example, for supporting network energy saving, which embodiments are summarized below and further fully described below. The NW operating state includes one or more operating states on corresponding one or more groups of cells of the NW. The group of cells includes one or more cells.

[0104] In one embodiment, indication and activation of one or more NW operating states is provided.

[0105] In one embodiment, notification of transitions among NW operating states via physical layer signaling, such as through a DCI provided by a PDCCH indicating one or more NW operating state indexes, is provided.

[0106] In one embodiment, a time duration of the indicated NW operating state is provided which is notified via physical layer signaling, such as by DCI provided by PDCCH.

[0107] In one embodiment, notification of the next monitoring opportunity of a PDCCH providing a DCI format indicating the NW operating status is provided.

[0108] In the present disclosure, the DCI format that provides an indication of the NW operation status is referred to as DCI format 2_8 in an embodiment of the present disclosure.

[0109] The general principle of adaptation of the NW operation state through physical layer signaling includes: the serving gNB indicates a set of NW operation states to the UE through higher layer signaling (such as through SIB or UE-specific RRC signaling), and sends a PDCCH providing a DCI format (DCI format 2_8) indicating an index to the set of NW operation states for the UE to determine the update of the NW operation state.

[0110] Figure 6 An example of a timing diagram of a NW operating state transition 600 according to the present disclosure is shown. Figure 6 The embodiment of the timing diagram of NW operating state transitions 600 shown in FIG. 6 is for illustration only.

[0111] Figure 6 An example process of NW operation state transition among different NW operation states according to the present disclosure is shown.

[0112] The NW transitions from a first NW operating state denoted as state k to a second NW operating state denoted as state l. For example, each NW operating state may represent a light / medium / heavy NW energy saving (ES) mode in which the NW uses different energy saving (ES) methods and parameter configurations. The serving gNB may provide the UE with parameters for each index of the NW operating state and the values ​​of the corresponding parameters in the SIB or via UE-specific higher layer signaling. The UE may then identify the NW operating state based on the value of the indicated NW operating state index.

[0113] In one embodiment, the NW indicates to the UE a set of multiple NW operating states that may include a default state. The NW operating state may include parameters associated with transmission / reception of the network in one or more of the power domain, the spatial domain, the time domain, and the frequency domain, and corresponding IEs.

[0114] For example, in the power domain, a first NW operating state may be associated with a first value of a parameter ss-PBCH-BlockPower that provides an average per-resource-element energy (Energy Per Resource Element, EPRE) of a secondary synchronization signal (SSS) in dBm, and a second NW operating state may be associated with a second value of the parameter ss-PBCH-BlockPower. For example, the first NW operating state and the second NW operating state may be associated with a first value and a second value of a parameter powerControlOffsetSS, respectively, that provides a power offset (in dB) of a non-zero power (NZP) CSI-RS RE to a SSS RE. For example, the first NW operating state and the second NW operating state may be associated with a first value and a second value of a parameter powerControlOffset, respectively, that provides a power offset (in dB) of a PDSCH RE to a NZP CSI-RS RE.

[0115] For example, in the frequency domain, the first NW operation state and the second NW operation state may be associated with a first value and a second value of a parameter locationAndBandwidth, respectively, which indicates a frequency domain location and a bandwidth (e.g., a frequency range) for reception or transmission of the UE. For example, the first NW operation state and the second NW operation state may be associated with a first value and a second value of a list of serving cells for active transmission and reception, respectively.

[0116] For example, in the spatial domain, the first NW operating state and the second NW operating state can be associated with a first value and a second value of a parameter maxMIMO-Layers, respectively, which parameter maxMIMO-Layers indicates the maximum number of MIMO layers to be used for PDSCH reception by the UE in the associated active DL BWP, or associated with a first value and a second value of a parameter nrOfAntennaPorts, respectively, which parameter nrOfAntennaPorts indicates the number of antenna ports determined by the codebook to be used for PDSCH reception, or associated with a first value and a second value of a parameter activeCoresetPoolIndex, respectively, where the coresetPoolIndex value is used for PDCCH transmission in the corresponding CORESET, and the UE can skip PDCCH reception in a CORESET having a coresetPoolIndex value not indicated by activeCoresetPoolIndex. For example, a first NW operating state and a second NW operating state may be associated with a first value and a second value, respectively, of an antenna port subset indicating a list of active antenna ports for CSI calculation, and other associated parameters such as codebook subset restriction, rank restriction, a two-dimensional logical antenna size, the number of antenna ports, and a list of CSI-RS resources.

[0117] For example, in the time domain, the first NW operation state and the second NW operation state may be associated with a first value and a second value of a parameter ssb-PeriodicityServingCell, respectively, indicating a transmission period of the SS / PBCH block in milliseconds, or associated with a first value and a second value of a parameter ssb-PositionsInBurst, respectively, indicating a time domain position of the SS / PBCH block in a SS / PBCH block transmission burst, or associated with a first value and a second value of a parameter groupPresence, respectively, indicating a group of SS / PBCH blocks being transmitted, such as a group of four SS / PBCH blocks with consecutive indices. For example, the first NW operation state and the second NW operation state may be associated with a first value and a second value of a time mode (e.g., in terms of period, on-duration, start offset, etc.), respectively, indicating a cell discontinuous transmission (DTX) or a cell discontinuous reception (DRX).

[0118] The serving gNB may provide the UE with one or more search space sets to monitor the PDCCH for detecting DCI format 2_8 indicating the NW operation state, as described in subsequent embodiments of the present disclosure. These search space sets may be independent of other search space sets provided by the serving gNB to the UE, or some or all search space sets may be common, and the UE may monitor the PDCCH for detecting both DCI format 2_8 indicating the NW operation state and other DCI formats providing information for scheduling PDSCH reception or PUSCH transmission or SRS transmission or providing other control information for the UE to adjust parameters related to transmission or reception.

[0119] The search space set may be a CSS set or a USS set. When the search space set is a CSS set, the serving gNB may indicate the search space set associated with DCI format 2_8 through higher layer signaling in the SIB or through UE-specific RRC signaling. The UE may monitor the PDCCH for detecting DCI format 2_8 in both the RRC_CONNECTED state and the RRC_INACTIVE state according to the corresponding search space set, and DRX operation may not be applicable to PDCCH reception providing DCI format 2_8.

[0120] The UE may receive the PDCCH providing DCI format 2_8 in the active DL BWP. Alternatively, the UE may receive the PDCCH providing DCI format 2_8 in the initial DL BWP used by all UEs to perform initial access and establish an RRC connection with the serving gNB. The latter option enables a single PDCCH transmission with DCI format 2_8 from the serving gNB to all UEs because the initial DL BWP is common to all UEs, while the former option avoids BWP switching delays because the UE receives the PDCCH providing DCI format 2_8 in the active DL BWP. The serving gNB may also indicate the DL BWP (e.g., frequency range) for PDCCH reception providing DCI format 2_8 through higher layer signaling (e.g., in the SIB).

[0121] Figure 7 1 shows a flow chart of a method 700 for NW indicating and activating NW operation status according to an embodiment of the present disclosure. The method 700 may be performed by a base station (e.g., Figure 1 101-103) as shown. Figure 7 The embodiment of method 700 shown in FIG. 7 is for illustration only. Figure 7 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described.

[0122] Figure 7 An example process for a serving gNB to indicate NW operation status to a UE according to the present disclosure is shown.

[0123] The serving gNB provides a set of NW operating states to the UE via high-layer signaling, wherein each state includes a list of NW operating parameters related to transmission or reception on the serving cell, for example in one or more of the time domain, frequency domain, spatial domain, and power domain 710. The high-layer signaling may be provided via a SIB and, for example, by ServingCellConfigCommonSIB, or may be UE-specific RRC signaling and, for example, by ServingCellConfigCommon. The serving gNB sends one or more PDCCHs including corresponding DCI formats 2_8, which indicate to the UE one or more indices of elements in the set of NW operating states 720. The indicated NW operating state may be valid after a time from the end of the one or more PDCCHs, which may be predefined in the specification of the system operation or may be indicated by the DCI format 2_8 730.

[0124] The serving gNB may also provide a set of one or more timer values ​​to the UE through higher layer signaling. The timer value may be an absolute time (such as milliseconds), or a number of symbols, time slots, or subframes based on a parameter set / SCS of an active DL BWP or a reference DL BWP (such as an initial DL BWP) on the primary cell, or based on a reference parameter set / SCS. If the set includes more than one timer value, DCI format 2_8 may also indicate the timer value. After the timer expires before the serving gNB sends another PDCCH with DCI format 2_8 to indicate another NW operation state, the NW operation state becomes a default NW operation state that may be provided by higher layer signaling, or becomes a predetermined state in a set of NW operation states, such as the first state or the last state.

[0125] In various embodiments, the determined network operating parameters for transmission or reception on one or more cells may be applied after an application delay time from the end of the reception time of the PDCCH providing the DCI format, wherein the application delay time is predefined or indicated by the DCI format.

[0126] Figure 8 800 is a flowchart of a method 800 for a UE to receive and activate a NW operation state according to an embodiment of the present disclosure. The method 800 may be performed by a UE (e.g., Figure 1 111-116) as shown. Figure 8 The embodiment of method 800 shown in FIG. 8 is for illustration only. Figure 8One or more of the components shown in the may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described.

[0127] Figure 8 An example process for a UE to obtain an indication of NW operating status from a DCI format according to the present disclosure is shown.

[0128] The UE is provided with a set of NW operating states from the serving gNB through high-layer signaling, wherein each state includes a list of NW operating parameters related to transmission or reception on the serving cell or TRP, for example in one or more of the time domain, frequency domain, spatial domain or power domain 810. The high-layer signaling may be a SIB and provided, for example, by ServingCellConfigCommonSIB, or may be UE-specific RRC signaling and provided, for example, by ServingCellConfigCommon. The UE receives one or more PDCCHs including corresponding DCI formats 2_8, which indicate the index of the element of the set of NW operating states 820. The UE operates according to the first of the indicated NW operating states after a time from the end of the one or more PDCCHs, which time may be predefined in the specification of the system operation or may also be indicated 830 by the DCI format 2_8.

[0129] The UE may also be provided with a set of one or more timer values ​​by higher layer signaling from the serving gNB, the timer value may be an absolute time (such as milliseconds), or a number of symbols, slots or subframes based on a parameter set / SCS of an active DL BWP or a reference DL BWP (such as an initial DL BWP) on the primary cell or based on a reference parameter set / SCS (such as 15kHz). If the set of timer values ​​includes more than one timer value, the DCI format 2_8 may also indicate the timer value. If the UE does not receive another PDCCH with a DCI format 2_8 indicating another NW operating state and the timer expires, the UE may assume operation according to a NW operating state which may be a default state provided by higher layer signaling or may be a predetermined state in a set of NW operating states (such as a first state or a last state).

[0130] Fig. 9 An example of a timing diagram of NW operating state transitions 900 according to the present disclosure is shown. Fig. 9 The embodiment of the timing diagram of NW operating state transitions 900 shown in FIG. 1 is for illustration only.

[0131] Fig.101 is a flow chart of a UE method 1000 for NW operation state switching via DCI indicating a NW operation state index according to an embodiment of the present disclosure. The method 1000 may be performed by a UE (e.g., Figure 1 111-116) as shown. Fig.10 The embodiment of method 1000 shown in FIG. 1 is for illustration only. Fig.10 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described.

[0132] Fig. 9 and Fig.10 An example diagram showing NW operation state switching via DCI indicating a NW operation state index is shown. Fig.10 Example procedures for a NW to provide, and for a UE to obtain, an indication of NW operating status according to the present disclosure are shown.

[0133] The UE is indicated by the serving gNB via higher layer signaling a set of N NW operation states 1010. Each NW operation state includes a list of parameters for NW operation in one or more of the aforementioned fields. The UE receives a PDCCH from the serving gNB providing DCI format 2_8, where DCI format 2_8 uses ceil(log 2 A (N)) bit field is used to indicate an index of the NW operation state 1020. The UE communicates 1030 with the serving gNB based on the indicated NW operation state.

[0134] In one example, when the UE does not correctly receive DCI format 2_8, the UE continues to communicate with the serving gNB according to the current NW operation state. In another example, the UE communicates with the serving gNB according to a default NW operation state, which may be defined in the specification of the system operation, or may be provided separately by a higher layer, or may be designated as the first state or the last state in a set of NW operation states.

[0135] In another example, each state is associated with a timer value. The timer value may be predetermined in the specification for system operation, or the serving gNB may indicate a set of one or more timer values ​​to the UE via higher layer signaling. When the set includes more than one timer value, the DCI format may include a second field having a value indicating an index in the set of timer values ​​for the UE to use the timer value associated with the index. When the timer expires before the UE receives another DCI format 2_8 indicating a new NW operating state, the UE is expected to communicate with the serving gNB according to a default NW operating state, as described in the previous paragraph. When the UE correctly decodes the DCI format 2_8 indicating the NW operating state, the UE resets the timer value.

[0136] A PDCCH providing DCI format 2_8 indicating the NW operating state typically needs to be received by all UEs with the same serving gNB, as all these UEs may need to communicate with the serving gNB based on the indicated NW operating state. Therefore, a UE may be provided with one or more CSS sets to monitor PDCCH candidates associated with DCI format 2_8.

[0137] It is not desirable for the set of NW operation states to include a large number of states, for example, it is not desirable for the size of the set to be greater than 8 or 16, because the NW has limited domains to accommodate its operation, and multiple domains may also be combined in one state. Therefore, it is not desirable that the corresponding field in DCI format 2_8 indicating the NW operation state by an index in the set indicating the NW operation state requires a large number of bits, for example, the field may not require more than 3 or 4 bits. Considering that the number of CRC bits of the DCI format is 24, the polar code requires a minimum payload greater than 4 bits (such as 12 bits), the coding gain from polar coding increases with increasing payload, and the DCI format 2_8 may need to have the same size as other DCI formats for which the UE monitors the associated PDCCH candidates for the corresponding search space set, the number of bits of the DCI format 2_8 may need to be tens of bits, such as 30 or more bits, excluding the CRC bits. Therefore, it is possible and beneficial to provide an indication of more than one NW operation state through the same DCI format 2_8.

[0138] In the present disclosure, a DCI format 2_8 providing a series of NW operating states is provided, for example to support a gradual transition using intermediate states from a maximum operating state in which the serving gNB uses all / most time / frequency / space / power resources to communicate with the UE to a minimum state in which the gNB uses minimal time / frequency / space / power resources or no time / frequency / space / power resources to communicate with the UE, or conversely, where the serving gNB transitions from the minimum state to the maximum state using steps of intermediate states.

[0139] For example, the serving gNB may first reduce time or space resources and then proceed to reduce power or frequency resources, or the serving gNB may first increase time or power resources and then proceed to increase frequency or space resources. To avoid PDCCH transmission with DCI format 2_8 every time NW operation transitions from one state to another, to avoid limitations associated with the gNB managing PDCCH monitoring for detecting DCI format 2_8 for UEs simultaneously while having different DRX for the UEs, and also to avoid increased UE power consumption due to UEs that have no data to send or receive having to exit a sleep state to monitor PDCCH for detecting DCI format 2_8, DCI format 2_8 may indicate a range of NW operation states.

[0140] Before transitioning to the next NW operating state, each NW operating state may be associated with a timer for its validity. As previously described, the timer for the NW operating state may be provided by a higher layer and may be additionally indicated by DCI format 2_8, and in this case, DCI format 2_8 also includes a field indicating a series of timers for a corresponding series of NW operating states. The field for the timer may be located near the field indicating the NW operating state, or the field for the timer may be located after the field for the NW operating state and have the same order in DCI format 2_8 to determine the corresponding mapping.

[0141] Fig.11 An example of a timing diagram of a series of NW operating state transitions 1100 according to the present disclosure is shown. Fig.11 The embodiment of the timing diagram of NW operating state transitions 1100 shown in FIG. 1 is for illustration only.

[0142] Fig.12 1 is a flow chart showing a method 1200 for indicating a DCI format for a range of NW operating states according to an embodiment of the present disclosure. The method 1200 may be performed by a UE (e.g., Figure 1 111-116) and a base station (e.g., as shown Figure 1 101-103) as shown. Fig.12 The embodiment of method 1200 shown in FIG. 1 is for illustration only. Fig.12 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described.

[0143] Fig.11 and Fig.12 An example diagram showing a series of NW operating state transitions via a DCI indicating a series of NW operating state indexes is shown.

[0144] Fig.12 An example process for a NW to provide via a DCI format and a UE to obtain via a DCI format an indication of a series of NW operating states according to the present disclosure is shown.

[0145] The serving gNB provides N NW operating states to the UE via higher layer signaling as described above, and DCI format 2_8 uses a field with M*ceil(log2(N)) bits or equivalently M ceil(log 2 The log (N)) bit field may indicate a series of M indices 1210. The value of M may be provided by higher layer signaling. In an alternative, a field in DCI format 2_8 may indicate the value of M, and the UE may interpret the remaining bits in DCI format 2_8 based on the indicated value of M. In this case, to avoid ambiguity in the interpretation of DCI format 2_8, the log (N)) bit field may indicate a series of M indices 1210. The value of M may be provided by higher layer signaling. In an alternative, a field in DCI format 2_8 may indicate the value of M, and the UE may interpret the remaining bits in DCI format 2_8 based on the indicated value of M. 2 (M max ) bits may be located in a total of M*ceil(log 2 The NW may be preceded by one or more fields of (N)) bits or by a field indicating a corresponding series of timers for the indicated NW operating state. max is the maximum number of states indicated, and M max The value of may be indicated by higher layers or defined in the specification of the system operation.

[0146] In this way, although the content of DCI format 2_8 is variable and based on log 2 (M max ) bits of the field value is determined, but the log 2 (M max The position and size of the field of ) bits is fixed at the beginning of DCI format 2_8. In addition, the size of DCI format 2_8 can remain fixed because, depending on the value of M, padding bits of zero value or additional fields providing other functions can be included to utilize the remaining (M). max -M)*ceil(log 2 (N)) bits. Based on the indicated series of M indices of the NW operation state, the UE can communicate 1220 with the serving gNB in ​​the time slot according to the NW operation state in the time slot.

[0147] The indicated state may be valid for a duration indicated by a higher layer, or a set of durations may be indicated by a higher layer for each NW operating state, or indicated commonly for all NW operating states, and one or more fields in DCI format 2_8 may indicate the duration of each NW operating state in a series of M states. For example, for a set of NW operating states with a duration of size L, there may be a total of M*ceil(log 2 One or more fields of (L)) bits indicate the duration of each state in a series of M states.

[0148] In one example, if the UE reaches the last state indicated in a series of M states, then after a specified or indicated duration has passed without the UE receiving another DCI format 2_8 indicating another series of NW operating states, the UE transitions to a default NW operating state that can be determined as described above. The UE determines a series of NW operating states based on the corresponding indication of the last DCI format 2_8 received by the UE. The last DCI format 2_8 is provided by a PDCCH reception providing a DCI format 2_8 and ends after other PDCCH receptions providing a DCI format 2_8.

[0149] The serving gNB may not send a PDCCH providing DCI format 2_8, for example to reduce signaling overhead or because it may be beneficial for the serving gNB to transition to a dormant state before a PDCCH monitoring opportunity for DCI format 2_8 so that energy saving may be beneficial, for example when there are no UEs with traffic to communicate with the serving gNB. Furthermore, when the serving gNB sends the associated PDCCH, it may not be ensured that all UEs associated with the serving gNB can receive DCI format 2_8, for example because it may not be ensured that all UEs correctly receive DCI format 2_8. For such cases, a default UE operation needs to be defined.

[0150] Fig.13 An example of a timing diagram of NW operating state transitions 1300 according to the present disclosure is shown. Fig.13 The embodiment of the timing diagram of NW operating state transitions 1300 shown in FIG. 1 is for illustration only.

[0151] Fig.14 1400 is a flowchart of a UE method 1400 for timer-based NW operation state transition according to an embodiment of the present disclosure. The method 1400 may be performed by a UE (e.g., Figure 1 111-116) as shown. Fig.14 The embodiment of method 1400 shown in FIG. 1 is for illustration only. Fig.14One or more of the components shown in the may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described.

[0152] Fig.13 and Fig.14 The timer-based NW operation state transition is shown.

[0153] Fig.14 A timer-based NW operation state transition according to the present disclosure is shown.

[0154] The UE receives a PDCCH from the serving gNB that provides a DCI format 2_8 indicating the NW operation state and may also include a corresponding timer value (NW operation state valid duration) 1410. A set of one or more timer values ​​may be predefined or provided to the UE by the serving gNB through higher layer signaling. For a set of L timer values ​​and a set of NW operation states of N states, DCI format 2_8 may use ceil(log 2 (N)) + ceil(log 2 (Y)) bits are used to indicate the index of the timer value in the set of timer values ​​and the index of the NW operation state in the set of NW operation states. When the UE correctly receives DCI format 2_8, the UE resets the timer value. When the timer expires, the UE communicates 1420 with the serving gNB according to the predetermined NW operation state. The predetermined NW operation state may be defined in the specification of the system operation, or indicated separately by the higher layer, or indicated by DCI format 2_8. For example, the UE may communicate with the serving gNB according to a default state, such as the first or last NW operation state in the set of states. If the set of timer values ​​includes a single value, the DCI format 2_8 does not include a field indicating the timer value of the indicated NW operation state.

[0155] The PDCCH monitoring timing for detecting the DCI format is determined according to a search space set that includes the DCI format as one of the parameters of the search space set. This enables a common understanding of the PDCCH monitoring timing between the UE and the serving gNB, so that the serving gNB knows that when the serving gNB sends the PDCCH, the UE can receive the PDCCH and decode the DCI format provided by the PDCCH. For the purpose of adaptation of the NW operating state, the predictability of the PDCCH transmission providing DCI format 2_8 to the serving gNB may not always exist, such as when the NW operating state changes to a low energy state in the absence of transmissions from the gNB for a period of time longer than the period of PDCCH monitoring for detecting DCI format 2_8 according to the search space set. In this case, in order to avoid unnecessary UE power consumption associated with receiving the PDCCH and decoding to detect DCI format 2_8, the DCI format 2_8 may include a field indicating when the next PDCCH reception providing DCI format 2_8 can be.

[0156] For example, the indication may be an integer multiple of the least common multiple of the periods associated with the search space set, so that when the UE fails to detect DCI format 2_8 indicating when the next PDCCH reception providing DCI format 2_8 may be, the penalty may be some unnecessary PDCCH reception, while at the same time ensuring in this way that the UE receives the next PDCCH with DCI format 2_8 that may be sent by the serving gNB.

[0157] Based on a separate indication by a higher layer as part of the information indicating the field of DCI format 2_8, a field in DCI format 2_8 indicating the next PDCCH monitoring opportunity for detecting DCI format 2_8 may be included in DCI format 2_8. The minimum value may correspond to the minimum period among the search space set associated with DCI format 2_8, or may be indicated by a higher layer. Other values ​​may be indicated by a higher layer via the SIB or via UE-specific RRC signaling. A second method for indicating the next PDCCH monitoring opportunity for detecting DCI format 2_8 is for the serving gNB to notify the UE of the association of the indicated NW operating state with the next PDCCH monitoring opportunity for detecting DCI format 2_8.

[0158] Then, when the UE determines the NW operation state, the UE may also determine the next PDCCH monitoring occasion. If the UE fails to correctly decode DCI format 2_8, the UE may still receive the next PDCCH providing DCI format 2_8, as previously described (in this case, the UE may unnecessarily receive some PDCCHs according to the search space set associated with DCI format 2_8 before the next PDCCH of DCI format 2_8 is actually provided). The trade-off between the two approaches is that the overhead in DCI format 2_8 is reduced with the second approach, at the expense of reduced flexibility for the serving gNB to indicate the preferred time of the next PDCCH monitoring occasion. The duration for PDCCH monitoring at the next PDCCH monitoring occasion may be as determined according to the corresponding search space set, or may also be indicated by DCI format 2_8. The indicated time for the next PDCCH monitoring occasion for DCI format 2_8 may be in units of slots of the BWP of PDCCH reception, or in units of slots of a reference parameter set / SCS (such as a 15kHz SCS), or an absolute time (such as milliseconds).

[0159] Fig.15 An example of a timing diagram 1500 of NW operational state transitions and next PDCCH monitoring occasion indications according to an indication received in the indicated next PDCCH monitoring occasion according to the present disclosure is shown. Fig.15 The embodiment of the timing diagram 1500 of NW operating state transitions shown in FIG. 1 is for illustration only.

[0160] Fig.16 1 shows a flow chart of a UE method 1600 for indicating a NW operation state and a next PDCCH monitoring opportunity for the DCI format through a DCI format according to an embodiment of the present disclosure. The method 1600 may be performed by a UE (e.g., Figure 1 111-116) as shown. Fig.16 The embodiment of method 1600 shown in FIG. 1 is for illustration only. Fig.16 One or more of the components shown in the may be implemented in dedicated circuits configured to perform the functions described, or one or more of the components may be implemented by one or more processors executing instructions to perform the functions described.

[0161] Fig.15 and Fig.16 It is shown that the NW operation state is indicated by the DCI format and the next PDCCH monitoring opportunity for the DCI format.

[0162] Fig.15 A method for serving gNB indication and for UE to determine the next PDCCH monitoring opportunity according to the present disclosure is shown.

[0163] The UE receives a PDCCH 1510 providing a DCI format 2_8. The UE determines the next PDCCH monitoring opportunity 1520 for detecting DCI format 2_8 based on an indication of a field in the DCI format 2_8 or based on the NW operating state indicated by the DCI format 2_8. When the next PDCCH monitoring opportunity is based on the field, the serving gNB also notifies the UE in advance through higher layer signaling of a mapping of the value of the field to the value of the time period until the next PDCCH monitoring opportunity. The granularity of the time period can be the minimum or maximum period value among the search space set associated with the DCI format 2_8, or can also be indicated by the higher layer in the number of time slots of the reference parameter set / SCS or in absolute time (such as milliseconds).

[0164] When the next PDCCH monitoring opportunity is based on an association with the indicated NW operating state, the serving gNB also informs the UE of the association, for example, through the SIB or through UE-specific RRC signaling, and the granularity may be the same as when the next PDCCH monitoring opportunity is indicated by a field in DCI format 2_8. The UE may then receive the next PDCCH 1530 for detecting DCI format 2_8 based on the indicated next PDCCH monitoring opportunity.

[0165] 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 various steps in each figure can overlap, occur in parallel, occur in different orders, or occur multiple times. In another example, a step can be omitted or replaced by another step.

[0166] Although the present disclosure has been described with exemplary embodiments, various changes and modifications may be suggested to those skilled in the art. The present disclosure is intended to cover these changes and modifications that fall within the scope of the appended claims. The 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.

Claims

1. A method for a user equipment UE, the method comprising: take over: first information related to an operating state on a cell, wherein a first one of the operating states comprises a first parameter associated with transmission of a channel or a signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain, second information related to a search space set for receiving a physical downlink control channel (PDCCH), wherein the PDCCH in the PDCCH provides a downlink control information (DCI) format indicating one or more of the operating states, and PDCCH; determining parameters in one or more of a power domain, a spatial domain, a time domain, and a frequency domain based on the one or more operating states indicated by the DCI format; and The channel or signal is received on the cell based on the parameter.

2. The method according to claim 1, further comprising: take over: third information related to the first bandwidth part BWP, and Fourth information related to the second BWP, wherein: The reception of PDCCH is within the first BWP, and The reception prior to the reception of the PDCCH is within the second BWP.

3. The method according to claim 1, wherein: The determined parameters are applied after an application delay time from the end of a reception time of a PDCCH providing the DCI format, The application delay time is predefined or indicated by the DCI format, The DCI format provides a series of M operating states and corresponding M timer values, An operating state in the series of M operating states is applicable for a duration indicated by a corresponding timer value, and The parameter is continuously determined based on the series of M operating states and the corresponding M timer values, The parameters include at least one of power, number of antenna ports, frequency range and duration.

4. The method according to claim 1, further comprising: take over: third information related to one or more timer values, and fourth information related to the second operating state, wherein the DCI format indicates a third operating state and a timer value associated with the third operating state, Wherein, determining the parameter further comprises determining the parameter based on the following contents: a second operating state before expiration of said timer value, and A third operating state after expiration of the timer value.

5. The method according to claim 1, further comprising: determining an opportunity for subsequent PDCCH reception based on an indication of the DCI format, wherein the indication is for a subset of opportunities for PDCCH reception associated with a search space set over a duration; and The subsequent PDCCH is received at the determined timing.

6. A user equipment UE, comprising: A transceiver configured to receive: first information related to an operating state on a cell, wherein a first one of the operating states comprises a first parameter associated with transmission of a channel or a signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain, second information related to a search space set for receiving a physical downlink control channel (PDCCH), wherein the PDCCH in the PDCCH provides a downlink control information (DCI) format indicating one or more of the operating states, and PDCCH; and a processor operatively coupled to the transceiver, the processor configured to determine parameters of the one or more operating states indicated by the DCI format, The transceiver is further configured to receive the channel or signal on the cell based on the parameter.

7. The UE according to claim 6, wherein: The transceiver is also configured to receive: third information related to the first bandwidth part BWP, and The fourth information related to the second BWP, The reception of PDCCH is within the first BWP, and The reception prior to the reception of the PDCCH is within the second BWP.

8. The UE according to claim 6, wherein: The determined parameters are applied after an application delay time from the end of a reception time of a PDCCH providing the DCI format, The application delay time is predefined or indicated by the DCI format, The DCI format provides a series of M operating states and corresponding M timer values, An operating state in the series of M operating states is applicable for a duration indicated by a corresponding timer value, and The parameter is continuously determined based on the series of M operating states and the corresponding M timer values, The parameters include at least one of power, number of antenna ports, frequency range and duration.

9. The UE according to claim 6, wherein: The transceiver is also configured to receive: third information related to one or more timer values, and fourth information related to the second operating state, the DCI format indicating a third operating state and a timer value associated with the third operating state, The processor is further configured to determine the parameter based on: a second operating state before expiration of said timer value, and A third operating state after expiration of the timer value.

10. The UE according to claim 6, wherein: The processor is further configured to determine a timing for subsequent PDCCH reception based on the indication of the DCI format, The indication is for a subset of opportunities over a duration for PDCCH reception associated with a search space set, and The transceiver is further configured to receive the subsequent PDCCH in the determined opportunity.

11. A base station, comprising: The transceiver is configured to send: first information related to an operating state on a cell, wherein a first one of the operating states comprises a first parameter associated with transmission of a channel or a signal on the cell in one or more of a power domain, a spatial domain, a time domain, and a frequency domain, second information related to a search space set for receiving a physical downlink control channel (PDCCH), wherein the PDCCH in the PDCCH provides a downlink control information (DCI) format indicating one or more of the operating states, and PDCCH; and a processor operatively coupled to the transceiver, the processor configured to determine parameters of the one or more of the operating states, Wherein, the transceiver is further configured as: The channel or signal is transmitted over the cell based on parameters of the one or more operating states.

12. The base station according to claim 11, wherein: The parameters include at least one of power, number of antenna ports, frequency range and duration, The DCI format provides a series of M operating states and corresponding M timer values, An operating state in the series of M network operating states is applicable for a duration indicated by a corresponding timer value, and The transceiver is further configured to transmit the channel or signal over the cell using the parameters based on the series of M operating states and the corresponding M timer values.

13. The base station according to claim 11, wherein: The transceiver is also configured to transmit: third information related to the first bandwidth part BWP, and The fourth information related to the second BWP, The transmission of PDCCH is within the first BWP, and The transmission prior to the transmission of the PDCCH is within the second BWP.

14. The base station according to claim 11, wherein: The transceiver is also configured to transmit: third information related to one or more timer values, and fourth information related to the second operating state; the DCI format indicating a third operating state and a timer value associated with the third operating state, The channel or signal is associated with the second operating state prior to expiration of the timer value, and The channel or signal is associated with a third operating state after expiration of the timer value.

15. The base station according to claim 11, wherein: The DCI format also indicates: the application delay time of the parameter from the end of the reception time of the PDCCH providing the DCI format, and Opportunities for subsequent PDCCH transmissions, wherein the indicated application delay time is for a subset of the opportunities for PDCCH transmissions associated with the search space set in duration.

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