Method and apparatus for monitoring based on wake-up signal in a wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. According to an embodiment of the present disclosure, a method performed by a user equipment, UE, in a wireless communication system, comprises, receiving, from a base station, BS, configuration information on wake-up signal, WUS, monitoring occasions, MOs, in a radio resource control, RRC, connected state, receiving, from the BS, a WUS on a primary cell based on a period and a first time offset included in the configuration information, identifying to monitor a physical downlink control channel, PDCCH, based on the WUS, and starting a timer for the PDCCH monitoring.

Description

METHOD AND APPARATUS FOR MONITORING BASED ON WAKE-UP SIGNAL IN A WIRELESS COMMUNICATION SYSTEM

[0001] The present disclosure relates to the field of wireless communication technology. More specifically, the present disclosure relates to method and apparatus for monitoring based on wake-up signal (WUS) in a wireless communication system.

[0002] 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6GHz” bands such as 3.5GHz, but also in “Above 6GHz” bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz (THz) bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G mobile communication technologies.

[0003] At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.

[0004] Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning.

[0005] Moreover, there has been ongoing standardization in air interface architecture / protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture / service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions.

[0006] As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 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 for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing 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 technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

[0008] The present disclosure relates to the field of wireless communication technology. More specifically, the present disclosure relates to method and apparatus for monitoring based on wake-up signal (WUS) in a wireless communication system.

[0009] According to an aspect of an exemplary embodiment, there is provided a communication method in a wireless communication system.

[0010] Aspects of the present disclosure provide efficient communication methods in a wireless communication system.

[0011] To more clearly explain the technical solutions in the embodiments of the present disclosure, the drawings to be used in the description of the embodiments of the present disclosure will be briefly introduced below.

[0012] FIG. 1 illustrates a schematic diagram of an overall structure of a wireless network according to an embodiment of the present disclosure;

[0013] FIG. 2a illustrates a schematic diagram of a transmit path according to an embodiment of the present disclosure;

[0014] FIG. 2b illustrates a schematic diagram of a receive path according to an embodiment of the present disclosure;

[0015] FIG. 3a illustrates a schematic diagram of a structure of a UE according to an embodiment of the present disclosure;

[0016] FIG. 3b illustrates a schematic diagram of a structure of a base station according to an embodiment of the present disclosure;

[0017] FIG. 4 illustrates a schematic flow diagram of a method performed by a UE according to an embodiment of the present disclosure;

[0018] FIG. 5 illustrates a schematic diagram of monitoring of N wake-up signal MOs according to an embodiment of the present disclosure;

[0019] FIG. 6 illustrates a schematic diagram of monitoring of wake-up signal MOs in a same beam direction according to an embodiment of the present disclosure;

[0020] FIG. 7 illustrates a schematic diagram of monitoring of non-consecutive wake-up signal MOs according to an embodiment of the present disclosure;

[0021] FIG. 8 illustrates a schematic diagram of monitoring of wake-up signals of serving cells according to an embodiment of the present disclosure;

[0022] FIG. 9 illustrates a schematic diagram of monitoring of cross-carrier scheduled wake-up signals according to an embodiment of the present disclosure;

[0023] FIG. 10a illustrates a schematic flow diagram of another method performed by a UE according to an embodiment of the present disclosure;

[0024] FIG. 10b illustrates a schematic flow diagram of yet another method performed by a UE according to an embodiment of the present disclosure;

[0025] FIG. 11 illustrates a schematic diagram of a flow in which a wake-up signal triggers PDCCH monitoring when carrier aggregation is configured, according to an embodiment of the present disclosure; and

[0026] FIG. 12 illustrates a schematic diagram of a structure of an electronic device according to an embodiment of the present disclosure.

[0027] FIG. 13 is a block diagram of a terminal or user equipment (UE) according to an embodiment of the disclosure.

[0028] FIG. 14 is a block diagram of a base station (BS) according to an embodiment of the disclosure.

[0029] FIG. 15 is a block diagram of a network entity according to an embodiment of the disclosure.

[0030] Hereinafter, embodiments of the disclosure will be described in detail with reference to the accompanying drawings.

[0031] In describing the embodiments, descriptions related to technical contents well-known in the art and not associated directly with the disclosure will be omitted. Such an omission of unnecessary descriptions is intended to prevent obscuring of the main idea of the disclosure and more clearly transfer the main idea.

[0032] For the same reason, in the accompanying drawings, some elements may be exaggerated, omitted, or schematically illustrated. Further, the size of each element does not completely reflect the actual size. In the drawings, identical or corresponding elements are provided with identical reference numerals or different reference numerals.

[0033] The advantages and features of the disclosure and ways to achieve them will be apparent by making reference to embodiments as described below in detail in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments set forth below, but may be implemented in various different forms. The following embodiments are provided only to completely disclose the disclosure and inform those skilled in the art of the scope of the disclosure, and the disclosure is defined only by the scope of the appended claims. Throughout the specification, the same or like reference numerals designate the same or like elements. Furthermore, in describing the disclosure, a detailed description of known functions or constitution incorporated herein will be omitted in the case that it is determined that the description may make the subject matter of the disclosure unnecessarily unclear. The terms which will be described below are terms defined in consideration of the functions in the disclosure, and may be different according to users, intentions of the operators, or customs. Therefore, the definitions of the terms should be made based on the contents throughout the specification.

[0034] Herein, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, may be performed based on computer program instructions. These computer program instructions may be loaded collectively onto at least one processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which perform through any one of, or in any combination of, the at least one processor of the computer or other programmable data processing apparatus, create means for performing the functions specified in the flowchart block(s). These computer program instructions may also be stored in a non-transitory computer usable or computer-readable memory that may direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer usable or computer-readable memory produce an article of manufacture including instruction means that perform the function specified in the flowchart block(s). The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable data processing apparatus to produce a computer executed process such that the instructions that perform on the computer or other programmable data processing apparatus provide steps for executing the functions specified in the flowchart block(s).

[0035] Further, each block may represent a module, segment, or portion of code, which includes one or more executable instructions for executing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order. For example, two blocks(or functions) shown in succession may in fact be performed substantially concurrently or the blocks may sometimes be performed in the reverse order, depending upon the functionality involved.

[0036] As used in embodiments of the disclosure, a “~unit” may refer to a software element or a hardware element, such as a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), which performs a predetermined function. However, the term including the word “~unit” does not always have a meaning limited to software or hardware. The “~unit” may be constructed either to be stored in an addressable storage medium or to execute one or more processors. Therefore, the “~unit” includes, for example, software elements, object-oriented software elements, components such as class elements and task elements, processes, functions, properties, procedures, sub-routines, segments of a program code, drivers, firmware, micro-codes, circuits, data, database, data structures, tables, arrays, and parameters. The components and functions provided by the “~unit” may be either combined into a smaller number of components and a “~unit,” or divided into additional components and a “~unit.” Moreover, the components and “~units” may be implemented to reproduce one or more central processing units (CPUs) within a device or a security multimedia card. Further, in the embodiments, the “~unit” may include one or more processors.

[0037] It should be appreciated that the blocks in each flowchart and combinations of the flowcharts may be performed by one or more computer programs which include instructions. The entirety of the one or more computer programs may be stored in a single memory device or the one or more computer programs may be divided with different portions stored in different multiple memory devices.

[0038] Any of the functions or operations described herein can be processed by one processor or a combination of processors. The one processor or the combination of processors is circuitry performing processing and includes circuitry like an application processor (AP, e.g. a CPU), a communication processor (CP, e.g., a modem), a graphics processing unit (GPU), a neural processing unit (NPU) (e.g., an artificial intelligence (AI) chip), a Wi-Fi chip, a Bluetooth® chip, a global positioning system (GPS) chip, a near field communication (NFC) chip, connectivity chips, a sensor controller, a touch controller, a finger-print sensor controller, a display driver integrated circuit (IC), an audio CODEC chip, a universal serial bus (USB) controller, a camera controller, an image processing IC, a microprocessor unit (MPU), a system on chip (SoC), an IC, or the like.

[0039] It will be appreciated that various embodiments of the disclosure according to the claims and description in the specification can be realized in the form of hardware, software or a combination of hardware and software.

[0040] Any such software may be stored in non-transitory computer readable storage media. The non-transitory computer readable storage media store one or more computer programs (software modules), the one or more computer programs include computer-executable instructions that, when executed by one or more processors of an electronic device individually or collectively, cause the electronic device to perform a method of the disclosure.

[0041] Any such software may be stored in the form of volatile or non-volatile storage such as, for example, a storage device like read only memory (ROM), whether erasable or rewritable or not, or in the form of memory such as, for example, random access memory (RAM), memory chips, device or integrated circuits or on an optically or magnetically readable medium such as, for example, a compact disk (CD), digital versatile disc (DVD), magnetic disk or magnetic tape or the like. It will be appreciated that the storage devices and storage media are various embodiments of non-transitory machine-readable storage that are suitable for storing a computer program or computer programs comprising instructions that, when executed, implement various embodiments of the disclosure. Accordingly, various embodiments of the present disclosure may provide a program comprising code for implementing apparatus or a method as claimed in any one of the claims of this specification and a non-transitory machine-readable storage storing such a program.

[0042] Hereinafter, the determination of priority between A and B in the present disclosure may refer to various actions such as selecting the one having a higher priority based on a predefined priority rule and performing an operation corresponding thereto, or omitting or dropping an operation corresponding to the one having a lower priority.

[0043] Hereinafter, "A or B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0044] In addition, "at least one of A, B, and C" as described in the present disclosure may be understood to include A, or B, or C, or any combination of A, B, and C.

[0045] In addition, "at least one of A, B, or C" as described in the present disclosure may be understood to include A, or B, or C, or any combination of A, B, and C.

[0046] Furthermore, "A / B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0047] Furthermore, "A, B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0048] Furthermore, "A and B" as described in the present disclosure may be understood as "A and / or B," which may include A, or B, or both A and B.

[0049] Furthermore, “if condition A and condition B are satisfied,” as described in the present disclosure, may not be limited to a case where both condition A and condition B are satisfied, but may be understood to include a case where either condition A or condition B is individually satisfied, both condition A and condition B are satisfied, or one or more additional conditions are satisfied in combination.

[0050] Furthermore, throughout this disclosure, ordinal terms such as "first," "second," "third," etc., (and similar qualifiers) are used merely to distinguish between different instances, occurrences, configurations, messages, stages, or aspects of elements, operations, or information as described herein. Unless the context clearly dictates otherwise, the use of such ordinal terms does not itself require that the elements, operations, or information distinguished by these terms be structurally different, numerically distinct, or substantively dissimilar. For example, a "first signal" and a "second signal" may refer to instances of the same signal transmitted at different times or containing the same core information despite minor variations, or they may refer to signals with different content or characteristics, depending on the specific context. Similarly, a "first value" and a "second value" may represent the same magnitude but measured or applied in different circumstances, or they may represent different magnitudes. The interpretation should be guided by the specific technical context, function, and relationship described in the relevant portion of the specification and claims.

[0051] Furthermore, the terms “first ~”, “second ~”, etc., as described in the present disclosure with respect to various elements (e.g., information, objects, operation, sequences, or the like), should not limit those elements. These terms may only be intended to distinguish one element from another, and may not be intended to indicate a specific order. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element.

[0052] Furthermore, even if “first ~” and “second ~” are described in the present disclosure, it may be understood that element(s) referred to by “first ~” and “second ~” may be the same or different. For example, in case of element(s) being information, first information and second information may both be same information and, in some cases, are separate and different information.

[0053] In addition, the terms “if ~” and “in case that ~” as used in the disclosure or claims may be interpreted to include the meanings of “when (or upon) ~,” “in response to ~,” “based on ~,” or “according to ~,” and may be used interchangeably with these expressions. In addition, expressions other than those exemplified herein may also be used, as long as they have substantially the same meaning and do not impair the technical features of the present disclosure.

[0054] For example, the physical layer signaling may be referred to as Layer 1 (L1) signaling and may include downlink control information (DCI). In addition, the higher layer signaling may include a medium access control (MAC) control message, a radio resource control (RRC) signaling message, a non-access stratum (NAS) signaling message, or an application layer message. The RRC signaling message may be referred to as L3 (layer 3) signaling. It should be noted, however, that the higher layer signaling is not limited to the aforementioned examples.

[0055] In addition, the term "not perform" as used in the present disclosure or claims may, in context, be understood to mean that the corresponding step is omitted or skipped. Such a term may be replaced with other terms having the same or substantially equivalent meaning.

[0056] In addition, "transmitting a message including A and B" as described in the present disclosure, may be understood as encompassing both (i) transmitting A and B in a single message, and (ii) transmitting A and B separately via multiple messages (e.g., transmitting a first message including A and a second message including B). This interpretation may also apply to messages that include two or more items (e.g., A, B, C), transmitted either together or separately.

[0057] In addition, "transmitting a message including A and transmitting a message including B" may also be interpreted as transmitting a message including A and B in a single message.

[0058] In the specific embodiments of the present disclosure described below, terms or components included in the disclosure may be expressed in singular or plural form depending on the specific embodiments presented. However, such singular or plural expressions are selected appropriately for convenience of description, and the present disclosure is not limited to a singular or plural number of components. A component expressed in the plural form may be implemented as a single component, and a component expressed in the singular form may be implemented as multiple components.

[0059] The drawings or flowcharts described below illustrate exemplary methods that may be implemented according to the principles of the present disclosure, and various modifications may be made to the methods illustrated in the flowcharts of the present disclosure. For example, although illustrated as a series of steps, various steps in each drawing or flowchart may overlap, occur in parallel, occur in a different order, or be repeated. In other examples, any step may be omitted or replaced with another step.

[0060] The methods and apparatuses proposed in the embodiments of the present disclosure are not limited to each embodiment individually, but may also be applied in combination of all or some of the embodiments proposed in the disclosure. Therefore, the embodiments of the present disclosure may be modified and applied without significantly departing from the scope of the present disclosure, as would be understood by those skilled in the art.

[0061] In this case, even if certain wordings are described differently across embodiments, they may be used interchangeably or in substitution or in combination if their underlying concepts are equivalent. For example, for the same or equivalent concept, even if one embodiment uses the expression "A" and another embodiment uses the expression "B", such expressions may be understood interchangeably, in substitution, or in combination.

[0062] The terms used in the following description to refer to access nodes, network entities, messages, interfaces between network entities, various types of identification information, and the like, are provided merely for the convenience of explanation by way of example. Therefore, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may also be used. Such terms may also be interchangeable with terms defined in any 3rd generation partnership project　(3GPP) technical specifications (TS) where appropriate.

[0063] Hereinafter, a base station is an entity that allocates resources to terminals, and may be at least one of a gNode B, an eNode B, a Node B, a base station (BS), a wireless access unit, a BS controller, or a node on a network.

[0064] Furthermore, the base station of the present disclosure may include a split architecture comprising a central unit (CU) and a distributed unit (DU). In this structure, the CU is configured to process the higher layers of the control and user planes, while the DU is configured to process lower-layer radio resource functions. The embodiments of the present disclosure may be equally applicable to 5G base station architectures in which such CU and DU functional splits are implemented.

[0065] A terminal may include a UE, a mobile station (MS), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing communication functions.

[0066] In the disclosure, a downlink (DL) refers to a radio link through which a BS transmits a signal to a UE, and an uplink (UL) refers to a radio link through which a UE transmits a signal to a BS.

[0067] Furthermore, hereinafter, 5th generation (5G) mobile communication technologies (e.g., 5G new radio (NR)), 6th generation (6G) mobile communication technologies may be described by way of example, but the embodiments of the present disclosure may also be applied to other communication systems having similar technical backgrounds or channel types. For example, newly evolved mobile communication systems developed after 5G and 6G may be included. Furthermore, based on determinations by those skilled in the art, the embodiments of the present disclosure may also be applied to other communication systems (e.g., Wi-Fi systems) through some modifications without significantly departing from the scope of the present disclosure

[0068] In the following description, the terms physical channel and signal may be used interchangeably with data or control signal. For example, the term physical downlink shared channel (PDSCH) refers to a physical channel through which data is transmitted, but the term PDSCH may also be used to refer to the data itself. That is, in the present disclosure, the expression "transmit a physical channel" may be interpreted as being equivalent to the expression "transmit data or a signal via a physical channel."

[0069] Hereinafter, in the context of the present disclosure, higher layer signaling may refer to signaling corresponding to at least one or any combination of the following: master information block (MIB), system information block (SIB) or SIB M (M = 1, 2, ...), radio resource control (RRC), or medium access control (MAC) control element (CE), or a non-access stratum (NAS) signaling message, or an application layer message. The RRC signaling message may be referred to as L3 (layer 3) signaling.

[0070] In addition, L1 signaling may refer to signaling corresponding to at least one or any combination of signaling techniques using the at least one or any combination of the following physical layer channels or signaling: physical downlink control channel (PDCCH), downlink control information (DCI), user equipment (UE)-specific DCI, group-common DCI, common DCI, scheduling DCI (e.g., DCI used for scheduling downlink or uplink data), non-scheduling DCI (e.g., DCI not used for scheduling downlink or uplink data) physical uplink control channel (PUCCH), or uplink control information (UCI). The L1 signaling message may be referred to as a physical layer signaling.

[0071] Hereinafter, the expression that information is configured by the BS, as used in the present disclosure or claims, may, in context, be understood to mean that the terminal receives the corresponding information from the BS via a physical layer signaling or a higher layer signaling. Such an expression may be replaced with other terms having the same or substantially equivalent meaning.

[0072] Hereinafter, the operational principle of the present disclosure will be described in detail with reference to the accompanying drawings.

[0073] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0074] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0075] It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.

[0076] The term “include” or “may include” refers to the existence of a corresponding disclosed function, operation or component which can be used in various embodiments of the present disclosure and does not limit one or more additional functions, operations, or components. The terms such as “include” and / or “have” may be construed to denote a certain characteristic, number, step, operation, constituent element, component or a combination thereof, but may not be construed to exclude the existence of or a possibility of addition of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0077] The term “or” used in various embodiments of the present disclosure includes any or all of combinations of listed words. For example, the expression “A or B” may include A, may include B, or may include both A and B.

[0078] Unless defined differently, all terms used herein, which include technical terminologies or scientific terminologies, have the same meaning as that understood by a person skilled in the art to which the present disclosure belongs. Such terms as those defined in a generally used dictionary are to be interpreted to have the meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted to have ideal or excessively formal meanings unless clearly defined in the present disclosure.

[0079] The various embodiments of the present disclosure can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system Frequency division duplex (FDD) systems, time division duplex (TDD) systems, universal mobile telecommunications systems (UMTS), global interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) systems or new wireless (NR) systems, etc. In addition, the various embodiments of the present disclosure can be applied to future oriented communication technologies.

[0080] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called “Beyond 4G networks” or “Post-LTE systems”.

[0081] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0082] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0083] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0084] FIG. 1 illustrates an example wireless network 100 according to various embodiments of the present disclosure. The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0085] The wireless network 100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a private IP network, or other data networks.

[0086] Depending on a type of the network, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And, depending on the type of the network, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal" or "user apparatus" can be used instead of "user equipment" or "UE". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, no matter whether the UE is a mobile device (such as a mobile phone or a smart phone) or a fixed device (such as a desktop computer or a vending machine).

[0087] gNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipments (UEs) within a coverage area 120 of gNB 102. The first plurality of UEs include a UE 111, which may be located in a Small Business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi Hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); a UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. GNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within a coverage area 125 of gNB 103. The second plurality of UEs include a UE 115 and a UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0088] The dashed lines show approximate ranges of the coverage areas 120 and 125, and the ranges are shown as approximate circles merely for illustration and explanation purposes. It should be clearly understood that the coverage areas associated with the gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on configurations of the gNBs and changes in the radio environment associated with natural obstacles and man-made obstacles.

[0089] As will be described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0090] Although FIG. 1 illustrates an example of the wireless network 100, various changes can be made to FIG. 1. The wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 can directly communicate with the network 130 and provide direct wireless broadband access to the network 130 for the UEs. In addition, gNB 101, 102 and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0091] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the present disclosure. In the following description, the transmission path 200 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some embodiments, the reception path 250 is configured to support codebook designs and structures for systems with 2D antenna arrays as described in embodiments of the present disclosure.

[0092] The transmission path 200 includes a channel coding and modulation block 205, a Serial-to-Parallel (S-to-P) block 210, a size N Inverse Fast Fourier Transform (IFFT) block 215, a Parallel-to-Serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a Serial-to-Parallel (S-to-P) block 265, a size N Fast Fourier Transform (FFT) block 270, a Parallel-to-Serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0093] In the transmission path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as Low Density Parity Check (LDPC) coding), and modulates the input bits (such as using Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. The Serial-to-Parallel (S-to-P) block 210 converts (such as demultiplexes) serial modulated symbols into parallel data to generate N parallel symbol streams, where N is a size of the IFFT / FFT used in gNB 102 and UE 116. The size N IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. The Parallel-to-Serial block 220 converts (such as multiplexes) parallel time-domain output symbols from the Size N IFFT block 215 to generate a serial time-domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. The up-converter 230 modulates (such as up-converts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at a baseband before switching to the RF frequency.

[0094] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations in reverse to those at gNB 102 are performed at UE 116. The down-converter 255 down-converts the received signal to a baseband frequency, and the cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. The Serial-to-Parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. The Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The Parallel-to-Serial block 275 converts the parallel frequency-domain signal into a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0095] Each of gNBs 101-103 may implement a transmission path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a reception path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmission path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a reception path 250 for receiving from gNBs 101-103 in the downlink.

[0096] Each of the components in FIGs. 2a and 2b can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGs. 2a and 2b may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 and IFFT block 215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0097] Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the present disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N 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 which is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0098] Although FIGs. 2a and 2b illustrate examples of wireless transmission and reception paths, various changes may be made to FIGs. 2a and 2b. For example, various components in FIGs. 2a and 2b can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGs. 2a and 2b are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0099] FIG. 3a illustrates an example UE 116 according to the present disclosure. The embodiment of UE 116 shown in FIG. 3a is for illustration only, and UEs 111-115 of FIG. 1 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3a does not limit the scope of the present disclosure to any specific implementation of the UE.

[0100] UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a transmission (TX) processing circuitry 303, a microphone 304, and a reception (RX) processing circuitry 305. UE 116 also includes a speaker 306, a controller / processor 307, an input / output (I / O) interface 308, an input device(s) 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0101] The RF transceiver 302 receives an incoming RF signal transmitted by a gNB of the wireless network 100 from the antenna 301. The RF transceiver 302 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is transmitted to the RX processing circuitry 305, where the RX processing circuitry 305 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuitry 305 transmits the processed baseband signal to speaker 306 (such as for voice data) or to controller / processor 307 for further processing (such as for web browsing data).

[0102] The TX processing circuitry 303 receives analog or digital voice data from microphone 304 or other outgoing baseband data (such as network data, email or interactive video game data) from controller / processor 307. The TX processing circuitry 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 302 receives the outgoing processed baseband or IF signal from the TX processing circuitry 303 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 301.

[0103] The controller / processor 307 can include one or more processors or other processing devices and execute an OS 312 stored in the memory 311 in order to control the overall operation of UE 116. For example, the controller / processor 307 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 302, the RX processing circuitry 305 and the TX processing circuitry 303 according to well-known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0104] The controller / processor 307 is also capable of executing other processes and programs residing in the memory 311, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. The controller / processor 307 can move data into or out of the memory 311 as required by an execution process. In some embodiments, the controller / processor 307 is configured to execute the application 313 based on the OS 312 or in response to signals received from the gNB or the operator. The controller / processor 307 is also coupled to an I / O interface 308, where the I / O interface 308 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 308 is a communication path between these accessories and the controller / processor 307.

[0105] The controller / processor 307 is also coupled to the input device(s) 309 and the display 310. An operator of UE 116 can input data into UE 116 using the input device(s) 309. The display 310 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 311 is coupled to the controller / processor 307. A part of the memory 311 can include a random access memory (RAM), while another part of the memory 311 can include a flash memory or other read-only memory (ROM).

[0106] Although FIG. 3a illustrates an example of UE 116, various changes can be made to FIG. 3a. For example, various components in FIG. 3a can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the controller / processor 307 can be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3a illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0107] FIG. 3b illustrates an example gNB 102 according to the present disclosure. The embodiment of gNB 102 shown in FIG. 3b is for illustration only, and other gNBs of FIG. 1 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3b does not limit the scope of the present disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0108] As shown in FIG. 3b, gNB 102 includes a plurality of antennas 370a-370n, a plurality of RF transceivers 372a-372n, a transmission (TX) processing circuitry 374, and a reception (RX) processing circuitry 376. In certain embodiments, one or more of the plurality of antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0109] RF transceivers 372a-372n receive an incoming RF signal from antennas 370a-370n, such as a signal transmitted by UEs or other gNBs. RF transceivers 372a-372n down-convert the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is transmitted to the RX processing circuitry 376, where the RX processing circuitry 376 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. RX processing circuitry 376 transmits the processed baseband signal to controller / processor 378 for further processing.

[0110] The TX processing circuitry 374 receives analog or digital data (such as voice data, network data, email or interactive video game data) from the controller / processor 378. TX processing circuitry 374 encodes, multiplexes and / or digitizes outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from TX processing circuitry 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0111] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuitry 376 and the TX processing circuitry 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as higher-level wireless communication functions. For example, the controller / processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller / processor 378 may support any of a variety of other functions in gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0112] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 can move data into or out of the memory 380 as required by an execution process.

[0113] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 to communicate with a larger network, such as the Internet, through a wired or wireless local area network or through a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.

[0114] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0115] As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374 and / or RX processing circuitry 376) support aggregated communication with FDD cells and TDD cells.

[0116] Although FIG. 3b illustrates an example of gNB 102, various changes may be made to FIG. 3b. For example, gNB 102 can include any number of each component shown in FIG. 3a. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuitry 374 and a single instance of the RX processing circuitry 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0117] A time-domain unit (also referred to as a time unit) in the embodiments of the present disclosure may be an orthogonal frequency division multiplexing (OFDM) symbol, an OFDM symbol group (consisted of multiple OFDM symbols), a slot, a slot group (consisted of multiple slots) , a subframe, a subframe group (consisted of multiple subframes), a system frame, a system frame group (consisted of multiple system frames), or it may also be an absolute time unit, such as 1 millisecond, 1 second, or the like. The time unit may also be a combination of multiple granularities, for example, N1 slots plus N2 OFDM symbols, and the like. It may also be a length of time for an On-Off Keying (OOK) code.

[0118] A frequency-domain unit (also referred to as a frequency unit) in the embodiments of the present disclosure may be a subcarrier, a subcarrier group (consisted of multiple subcarriers), a resource block (RB), which may also be referred to as a physical resource block (PRB), a resource block group (consisted of multiple RBs), a bandwidth part (BWP, which may also be referred to as band width part), a bandwidth part group (consisted of multiple BWPs), a band / carrier, a band / carrier group, or it may also be an absolute frequency-domain unit, such as 1 Hz, 1 kilohertz, or the like. The frequency-domain unit may also be a combination of multiple granularities, for example, M1 PRBs plus M2 subcarriers, and the like.

[0119] The transmission links of a wireless communication system mainly comprises downlink communication links from a 5G New Radio (NR) gNB to User Equipments (UEs), uplink communication links from the UEs to the network, and sidelink communication links from the UEs to the UEs.

[0120] For example, in the current wireless communication system, in order to reduce energy consumption on the terminal side, the UE may monitor a wake-up signal based on physical downlink control channel (PDCCH) monitoring occasions configured by radio resource control (RRC). For example, if the UE detects a PDCCH carrying a power saving radio network temporary identity (PS-RNTI) at the configured PDCCH monitoring occasions, the UE further reads a DCI message and determines, based on a configuration of the RRC and an indication of the wake-up signal, whether to enable a drx-onDurationTimer in the associated discontinuous reception (DRX) period and monitor the PDCCH.

[0121] In some use cases (e.g., Internet of Things devices and / or wearable devices) with more stringent requirements for low energy consumption of the UE, in order to further extend the battery life of the UE and reduce the energy consumption on the terminal side, an embodiment of the present disclosure proposes a scheme for an enhanced wake-up signal.

[0122] Exemplary embodiments of the present disclosure are further described below in conjunction with the accompanying drawings.

[0123] The description and the accompanying drawings are provided as examples only to assist the reader in understanding the present disclosure. They are not intended for and should not be construed as limiting the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, based on what is disclosed herein, it is apparent to those skilled in the art that changes can be made to the illustrated embodiments and examples, without departing from the scope of the present disclosure.

[0124] FIG. 4 illustrates a schematic flow diagram of a method performed by a UE according to an embodiment of the present disclosure.

[0125] In an embodiment of the present disclosure, there is provided a method performed by a UE in a communication system. As shown in FIG. 4, the method comprises the following steps.

[0126] Step S101: Receive first configuration information related to a wake-up signal, the first configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with the wake-up signal, wherein N is determined based on a number of information bits of the wake-up signal.

[0127] In the embodiment of the present disclosure, the wake-up signal refers to a signal capable of waking up the UE with extremely low power consumption. For example, the wake-up signal includes, but is not limited to, a low power wake up signal (LPWUS), and the wake-up signal may also be referred to by other names. The wake-up signal is exemplarily presented in the embodiment of the present disclosure, and the presented method may be used for configuration and transmission of other signals as well.

[0128] Optionally, a receiver of the UE includes two modules, i.e., a main radio (MR) module for receiving regular signals / channels transmitted by the base station, and a lower power wake up receiver (LPWUR) module for receiving wake-up signals transmitted by the base station. The reasons for receiving the wake-up signals using a dedicated module may be that the LPWUS is further based on amplitude shift keying (ASK)-modulated waveforms on the basis of OFDM waveforms using existing NR systems. OOK modulation is a special case of ASK modulation.

[0129] In the embodiment of the present disclosure, a configuration (e.g., the first configuration information) of the wake-up signal may be determined when the carrier aggregation is configured, such as a time-domain position for LPWUS monitoring, and a method of triggering search space monitoring by the LPWUS, and the like.

[0130] Optionally, the UE may obtain, through an RRC message, configuration information of the carrier aggregation, configuration information of the DRX, and the first configuration information related to the wake-up signal, and the like.

[0131] In the embodiment of the present disclosure, the UE may monitor the wake-up signal in one or N consecutive wake-up signal MO(s) or N non-consecutive wake-up signal MOs. The information bits of N wake-up signals transmitted in the N consecutive wake-up signal MOs or the N non-consecutive wake-up signal MOs may be different.

[0132] Step S102: Receive N wake-up signals transmitted in the N wake-up signal MOs based on the first configuration information.

[0133] In the embodiment of the present disclosure, the UE may monitor the wake-up signals at extremely low power, and once the UE monitored the wake-up signals, it may perform step S103.

[0134] Step S103: Determine whether to monitor a physical downlink control channel (PDCCH) based on first indication information indicated by the N wake-up signals.

[0135] In the embodiment of the present disclosure, the first indication information at least comprises at least one of the following.

[0136] (1) Whether to start a discontinuous reception (DRX) duration timer or not;

[0137] for example, a 1-bit indication information for indicating whether to start the drx-onDurationTimer to perform the PDCCH monitoring. If the value of the indication information is 1, the UE is triggered or starting the drx-onDurationTimer associated with the wake-up signal and monitors the PDCCH within the drx-onDurationTimer. If the value of the indication information is 0, the UE does not start the drx-onDurationTimer associated with the wake-up signal, or the UE does not expect to monitor the PDCCH.

[0138] (2) Activating or deactivating a secondary cell (Scell);

[0139] this may also be referred to as Scell activation / deactivation indication information. The indication information may be a fixed 31-bit bitmap one-to-one corresponding to configured Scell indexes from smallest to largest. For example, the smallest Scell index corresponds to MSB of the bitmap, and the largest Scell index corresponds to LSB of the bitmap. When the value of the bitmap corresponding to the Scell index is 0, it means deactivating the Scell if the Scell is configured by the RRC, otherwise if the Scell is not configured by the RRC, it means that the activation state is not changed or that the Scell is not configured, and when the value of the bitmap corresponding to the Scell index is 1, it means activating the Scell. This approach makes it possible that when the configured Scell is changed, the length of the wake-up signal will not change accordingly.

[0140] Alternatively, the Scell activation / deactivation indication information may one-to-one correspond to RRC-configured Scell indexes from smallest to largest, and the length or number of the Scell activation / deactivation indication information is the same as the number of RRC-configured Scell(s). The smallest Scell index corresponds to MSB of the bitmap, and the largest Scell index corresponds to LSB of the bitmap. When the value of the bitmap corresponding to the Scell index is 0, it means deactivating the Scell, and when the value of the bitmap corresponding to the Scell index is 1, it means activating the Scell. This approach can reduce resource and signaling overhead as well as reception latency. The UE monitors the PDCCH on a primary cell (Pcell) and the activated Scell.

[0141] (3) Whether to trigger a first timer or a PDCCH monitoring duration or not;

[0142] for example, indication information on the Scell triggering / not triggering the first timer or the PDCCH monitoring duration.

[0143] The indication information on the Scell triggering / not triggering the first timer or the PDCCH monitoring duration may be a fixed 31-bit bitmap one-to-one corresponding to configured Scell indexes from smallest to largest. For example, the smallest Scell index corresponds to MSB of the bitmap, and the largest Scell index corresponds to LSB of the bitmap. When the value of the bitmap corresponding to the Scell index is 0, it means that the first timer or the PDCCH monitoring duration of the Scell is not triggered, and when the value of the bitmap corresponding to the Scell index is 1, it means that the first timer or the PDCCH monitoring duration of the Scell is triggered. This approach makes it possible that when the configured Scell is changed, the length of the wake-up signal will not change accordingly.

[0144] Alternatively, the indication information on the Scell triggering / not triggering the first timer or the PDCCH monitoring duration may one-to-one correspond to RRC-configured Scell indexes from smallest to largest, and the length or number of the indication information on the Scell triggering / not triggering the first timer or the PDCCH monitoring duration is the same as the number of RRC-configured Scell(s). The smallest Scell index corresponds to MSB of the bitmap, and the largest Scell index corresponds to LSB of the bitmap. When the value of the bitmap corresponding to the Scell index is 0, it means that the first timer or the PDCCH monitoring duration of the Scell is not triggered, and when the value of the bitmap corresponding to the Scell index is 1, it means that the first timer or the PDCCH monitoring duration of the Scell is triggered. This approach can reduce resource and signaling overhead as well as reception latency. The UE monitors the PDCCH on a Pcell and the activated Scell.

[0145] Another example is a 1-bit indication information for indicating whether to start the first timer or the PDCCH monitoring duration to perform the PDCCH monitoring. If the value of the indication information is 1, the UE is triggered or starting the first timer or the PDCCH monitoring duration associated with the wake-up signal, to monitor the PDCCH within the first timer or the PDCCH monitoring duration. If the value of the indication information is 0, the UE does not trigger the first timer or the PDCCH monitoring duration associated with the wake-up signal, or the UE does not expect to monitor the PDCCH.

[0146] In other words, the wake-up signal may instruct the UE to transition from a dormancy period to an activation period, e.g., triggering the MR to transition from a dormancy period to an activation period. For example, the wake-up signal may instruct the UE to start the drx-onDurationTimer, trigger the PDCCH monitoring at the Pcell, and trigger the PDCCH monitoring of the Scell at the same time. Alternatively, the wake-up signal may indicate activation and deactivation states of the Scell. Alternatively, the wake-up signal may instruct the UE to directly perform the PDCCH monitoring for a period of time, e.g., triggering the first timer or the PDCCH monitoring duration.

[0147] In the method performed by the UE according to the embodiment of the present disclosure, the UE may realize monitoring the wake-up signal and waking up the UE at extremely low power, thereby reducing energy consumption of the UE.

[0148] In the embodiment of the present disclosure, the configuration information related to the wake-up signal MOs associated with the wake-up signal comprises at least one of the following parameters: an offset of wake-up signal occasions and / or the wake-up signal MOs (e.g., a first offset of the wake-up signal MOs relative to the DRX duration timer and / or a second offset of the wake-up signal occasions relative to the DRX duration timer), a first time interval (e.g., a minimum time interval) from the ending position of the received wake-up signals to the starting of the drx-onDurationTimer, an interval between two wake-up signal MOs (e.g., a second time interval), a duration of the wake-up signal occasions and / or the wake-up signal MOs, the number of the wake-up signal MOs, a period of the wake-up signal occasions and / or the wake-up signal MOs, a third time interval (e.g., a minimum time interval) from the ending position of the received wake-up signals to the starting of the first timer or the PDCCH monitoring duration, the starting position of the wake-up signal occasions and / or the wake-up signal MOs, a duration of the first timer, or the PDCCH monitoring duration. The wake-up signal occasions associated with the wake-up signal may include at least one wake-up signal MO.

[0149] In an optional implementation, the first configuration information further comprises a first time interval, wherein the first time interval is a time interval from the ending position of the last one of the received N wake-up signals or the ending position of the N wake-up signal MOs to the starting of the DRX duration timer. For example, the UE may determine, by the configured first time interval and the starting time of the drx-onDurationTimer, the time-domain ending position of the last one of the at least one wake-up signal MO on the Pcell.

[0150] In an optional implementation, the first configuration information further comprises a first time interval, wherein the first time interval is a time interval from the ending position of the wake-up signal occasions to the starting of the DRX duration timer. The UE determines, by the configured first time interval and the starting time of the drx-onDurationTimer, the time-domain ending position of the wake-up signal occasions on the Pcell.

[0151] In the embodiment of the present disclosure, the first time interval includes at least one of wake-up signal processing time, MR transition time, MR time-frequency synchronization time, or time for hybrid automatic repeat request (HARQ) acknowledge character (ACK) feedback of a MR wake-up state.

[0152] In an optional implementation, the first configuration information further comprises a first offset, wherein the first offset is an offset from the starting position of the N wake-up signal MOs or the starting position of the first one of the N wake-up signal MOs to the starting time of the DRX duration timer. For example, the UE may determine, by the configured first offset and the starting time of the drx-onDurationTimer, the time-domain starting position of the first one of the at least one wake-up signal MO on the Pcell.

[0153] In an optional implementation, the first configuration information further comprises a second offset, wherein the second offset is an offset from the starting position of the wake-up signal occasions to the starting time of the drx-onDurationTimer. For example, the UE may determine, by the configured second offset and the starting time of the drx-onDurationTimer, the time-domain starting position of the wake-up signal occasions on the Pcell.

[0154] In an optional implementation, if a plurality of wake-up signal MOs are configured, the first configuration information further comprises a second time interval, wherein the second time interval is a time interval from the ending position of the i-th wake-up signal MO to the starting position of the (i+1)-th wake-up signal MO, and i is an integer ranging from 1 to N-1. In other words, the starting position of each of the wake-up signal MOs starting from the second wake-up signal MO is determined based on the ending position of the previous wake-up signal MO and the second time interval. For example, the starting point of the next wake-up signal MO may be determined by the ending point of the previous wake-up signal MO and the interval between the two wake-up signal MOs.

[0155] In an optional implementation, the period of the wake-up signal MOs and / or the period of the wake-up signal occasions is determined based on a DRX period. For example, the period of the wake-up signal occasions and / or the period of the wake-up signal MOs is equal to the configured DRX period. At this time, the period of the wake-up signal occasions and / or the period of the wake-up signal MOs does not need the configuration as shown.

[0156] In the embodiment of the present disclosure, the first configuration information further comprises a third time interval, wherein the third time interval is a time interval from the ending position of the last one of the received N wake-up signals to the starting position of starting the first timer or the PDCCH monitoring duration. Alternatively, the third time interval is a time interval from the ending position of M wake-up signal MOs for determining the UE's identity information to the starting position of starting the first timer or the PDCCH monitoring duration, wherein M is an integer ranging from 1 to N. Optionally, the third time interval is determined based on inter-carrier transition time and / or inter-serving cell transition time. For example, the third time interval includes at least one of the wake-up signal processing time, the MR transition time, or the MR time-frequency synchronization time. Additionally, the third time interval may also include the inter-carrier transition time, and / or the inter-serving cell transition time, and / or the time for HARQ ACK feedback of the MR wake-up state. For example, when the at least one wake-up signal MO is configured on a Pcell, the third time interval may include a transition time from the Pcell to one or more configured Scells, if the wake-up signal indicates to trigger or start the first timer or the PDCCH monitoring duration on the one or more configured Scells. For another example, when the at least one wake-up signal MO is configured on an Scell, the third time interval shall include a transition time from the Scell receiving the wake-up signal to one or more configured Scells, if the wake-up signal indicate to trigger or start the first timer or the PDCCH monitoring duration on the one or more configured Scells.

[0157] The inter-carrier transition time and / or the inter-serving cell transition time is determined based on a sub-carrier spacing (SCS) of the PDCCH being configured on at least one serving cell, for example, related to the SCS of PDCCH signals configured on the one or more configured Scells.

[0158] Optionally, the inter-carrier transition time and / or the inter-serving cell transition time is determined based on the smallest sub-carrier spacing (SCS) for PDCCH monitoring on more than one serving cells, or based on the smallest SCS for PDCCH monitoring on serving cells except the serving cell transmitting the wake-up signal, e.g, may be determined based on the smallest of the PDCCH signals on a plurality of configured Scells. For another example, when the at least one wake-up signal MO is configured on a Pcell, the smallest SCS may be the smallest of the SCSs excluding the same SCS as that of the Pcell. For still another example, when the at least one wake-up signal MO is configured on an Scell, the smallest SCS may be the smallest of the SCSs excluding the same SCS as that of the Scell.

[0159] Optionally, the granularity of the third time interval may be a slot or a subframe.

[0160] In the embodiment of the present disclosure, within the third time interval, the UE does not expect to receive any downlink signal other than a SSB (Synchronization Signal Block) and / or the wake-up signal and / or to transmit any uplink signal other than a HARQ ACK feedback indication of the MR wake-up state.

[0161] In the embodiment of the present disclosure, an optional implementation is provided for transmission of the wake-up signals. Specifically, the N wake-up signals may also be referred to as N wake-up signal information bit blocks (which may also be referred to as signal blocks), and the UE receives the wake-up signal information bit blocks transmitted in the plurality of wake-up signal MOs to form an entire wake-up signal information bit block.

[0162] In one example, a function of the wake-up signal is used for triggering and enabling the drx-onDurationTimer for all aggregated carriers and / or for activation or deactivation of the configured secondary cells (Scells). The UE expects to monitor the PDCCH on the activated Scells and within the triggered drx-onDurationTimer. Due to the limited number of bits of the wake-up signal, a plurality of wake-up signal sequences may be used to carry information bits of a complete wake-up signal, in order to ensure that the wake-up signal is able to fulfill that function.

[0163] For example, a plurality of LPWUS MOs configured on the Pcell may be used to transmit different LPWUS signal blocks of an LPWUS, and to start the drx-onDurationTimer to perform cross-carrier PDCCH monitoring.

[0164] In an optional implementation, the N wake-up signal MOs may be used to transmit complete information bits of the wake-up signal. The UE monitors the N wake-up signal MOs to obtain the complete information bits of the wake-up signal, wherein each wake-up signal MO transmits a part of information bit blocks of the wake-up signal. The UE monitors each of the N wake-up signal MOs to obtain the part of information bit blocks of the wake-up signal, and the UE obtains complete bit information of the wake-up signal by receiving part of information bit blocks of N different wake-up signals transmitted in the N wake-up signal MOs.

[0165] FIG. 5 is a schematic diagram of monitoring of N wake-up signal MOs according to an embodiment of the present disclosure.

[0166] Exemplarily, as shown in FIG. 5, the complete bit information of one wake-up signal is obtained by the information bit blocks of the wake-up signals transmitted in the N wake-up signal MOs, and the DRX duration timer is started based on the bit information of the wake-up signal after the first time interval of the ending position of the last wake-up signal MO, to enable the Pcell and Scell-2 to monitor the PDCCH. The PDCCH monitored on the Pcell may schedule physical downlink shared channels (PDSCHs) of the Pcell and Scell-1, and the PDCCH monitored on the Scell-2 may schedule the PDSCH of the Scell-2.

[0167] In an optional implementation, the plurality of wake-up signal MOs comprise a plurality of consecutive wake-up signal MOs in the same beam direction. For example, the N wake-up signal MOs may be N consecutive wake-up signal MOs, and the UE monitors the N consecutive wake-up signal MOs in the same beam direction, to receive N part of information bit blocks of the same wake-up signal. Optionally, the UE or the group of UEs expects to monitor the N wake-up signal MOs associated in the same beam direction to obtain all information bits of the wake-up signal.

[0168] FIG. 6 is a schematic diagram of monitoring of wake-up signal MOs in a same beam direction according to an embodiment of the present disclosure.

[0169] Exemplarily, as shown in FIG. 6, the UE monitors the information bit blocks of the wake-up signals transmitted in the N consecutive wake-up signal MOs associated with beam direction #1, obtains the complete bit information of the wake-up signal, and starts the DRX duration timer based on the bit information of the wake-up signal.

[0170] Optionally, none of partial information bit blocks of wake-up signals transmitted in different wake-up signal MOs are the same.

[0171] In the embodiment of the present disclosure, the same beam direction may be determined based on beams receiving the SSB, and a quasi co-located (QCL) relationship between the configured SSB and the wake-up signal. This scheme is applicable to a case where the wake-up signal and the SSB have the QCL relationship. In this case, the UE may determine a downlink receive beam to be used by the UE by means of the QCL relationship, and the UE may use the determined downlink receive beam to receive the wake-up signal on the configured N consecutive wake-up signal MOs, without beam scanning of all the beams. If the QCL relationship between the SSB and the wake-up signal is such that beam direction of one SSB has a QCL relationship with beam directions of the plurality of wake-up signals, the same beam direction may be any one of the beam directions of the plurality of wake-up signals.

[0172] In another optional implementation, the N wake-up signal MOs may be N non-consecutive wake-up signal MOs, and the UE receives N part of information bit blocks of the same wake-up signal in the same beam direction. Optionally, the UE or the group of UEs expects to monitor the N wake-up signal MOs associated in the same beam direction to obtain all the information bits of the wake-up signal.

[0173] FIG. 7 is a schematic diagram of monitoring of non-consecutive wake-up signal MOs according to an embodiment of the present disclosure.

[0174] Exemplarily, as shown in FIG. 7, the UE monitors the information bit blocks of the wake-up signals transmitted in the N non-consecutive wake-up signal MOs associated in the same beam direction among K beams with beam directions #1 to #K, obtains complete wake-up signal bit information, and starts the DRX duration timer based on the wake-up signal bit information.

[0175] Optionally, the part of information bit blocks of the wake-up signal transmitted in each of the N non-consecutive wake-up signal MOs is different.

[0176] In the embodiment of the present disclosure, the plurality of wake-up signal MOs are determined from the wake-up signal MOs corresponding to the plurality of beams based on an association relationship between beam indexes and the wake-up signal MOs. For example, the N wake-up signal MOs associated in the same beam direction may be determined by the association relationship between the beam indexes and the wake-up signal MOs. Assuming that the UE is configured with K beams, the association relationship may be that beam index 1 is associated to {1st MO, (N+1)-th MO, ..., (N*(K-1)+1)-th MO}, beam index 2 is associated to {2nd MO, (N+2)-th MO, ..., (N*(K-1)+2)-th MO}, and so on. This scheme is applicable to a case where the wake-up signal and the SSB are not configured with the QCL relationship, in which case the UE determines the beam direction for receiving the wake-up signal by means of beam scanning.

[0177] In the embodiment of the present disclosure, when the first indication information comprises whether to start a Scell DRX duration timer or not, the N wake-up signals may further include a second indication information, wherein the second indication information includes the UE's identity information, such as index information that may uniquely identify the UE. Optionally, the UE's identity information may be a cell radio network temporary identification C-RNTI (Cell-RNTI). The UE may determine the identity information by an information bit indication of the wake-up signal, or may also implicitly determine the identity information by obtaining an overlaid OFDM generation sequence scrambled with the identity information.

[0178] Optionally, when the UE's identity information included in the second indication information is the same as the identity information of UE, a Pcell DRX duration timer is started. Optionally, if the identity information received by the UE and the local identity information are the same, the UE is triggered or starting the drx-onDurationTimer associated with the wake-up signal and monitors the PDCCH within the drx-onDurationTimer, or the UE is triggered or starting the first timer or the PDCCH monitoring duration associated with the wake-up signal, and monitors the PDCCH within the first timer or the PDCCH monitoring duration.

[0179] In the embodiment of the present disclosure, the wake-up signal includes a wake-up signal information bit block index. The information bit block index is used to distinguish which information bits the information bit blocks received by the UE are among the complete wake-up signal information bits, and the UE may merge the information bit blocks into the complete wake-up signal information bits based on the order of the information bit block indexes from smallest to largest. Each wake-up signal information bit block index is associated to a wake-up signal MO, and the number of wake-up signal information bit block indexes is equal to the number N of wake-up signal MOs associated with the wake-up signal information bits. This can be indicated using ) bits, where the sup means taking an upper bound. If bit information corresponding to certain information bit block index is not successfully decoded, or the UE does not monitor an information bit corresponding to the certain information bit block index, the UE may determine the first indication information based on other information bits received or decoded, such as whether to trigger the drx-onDurationTimer, or the indication information on the Scell triggering / not triggering the first timer or the PDCCH monitoring duration, or the like. Optionally, the UE monitors the PDCCH on Scells indicating activation, does not monitor the PDCCH on Scells corresponding to the missing information bits and / or determines that the Scells corresponding to the missing information bits are in the deactivation state.

[0180] In the embodiment of the present disclosure, a method of determining a number of information bits of a wake-up signal (which may not be determined by a configuration) is provided. Specifically, the UE may receive second configuration information, wherein the second configuration information includes the number of Scells, and the number of information bits of the wake-up signal is determined based on the number of Scells. Alternatively, the number of information bits of the wake-up signal is determined by a length of wake-up signal information bit block indexes and the number of configured Scells. Alternatively, the number of information bits of the wake-up signal and / or the length of wake-up signal information bit block indexes may be determined by, but is not limited to, at least one of the following information: a length of the UE's identity information, a length of the first indication information, the length of wake-up signal information bit block indexes, or the like.

[0181] In the embodiment of the present disclosure, a method of determining a number N of wake-up signal MOs is provided. Specifically, the number N of wake-up signal MOs associated with the wake-up signal is determined based on the number of information bits of the wake-up signal and a maximum number of bits that one wake-up signal MO can carry (which may also be construed as an upper bound of the maximum number of wake-up signal information bits that one wake-up signal MO can carry).

[0182] Optionally, the number N of wake-up signal MOs used to transmit the wake-up signal information bits may be determined by dividing the number of wake-up signal information bits by the upper bound of the maximum number of bits. The maximum number of bits may be a predefined or pre-configured value.

[0183] Exemplarily, the number N of wake-up signal MOs used to transmit the wake-up signal information bits needs to satisfy the following equation:

[0184]

[0185] where the Q denotes the number of configured Scells, and Max denotes the maximum number of bits that one wake-up signal MO can carry. This scheme is applicable to a case where the wake-up signal information bits transmitted in each MO include a part of wake-up signal information bit block index.

[0186] In the embodiment of the present disclosure, an association relationship between the Scells and the wake-up signal MOs may be determined based on the first indication information corresponding to the Scells and the number of wake-up signal MOs associated with the wake-up signal. For example, in a wake-up signal information bit block, low order bits may be the wake-up signal information bit block index, and high order (Max - ) bits are the first indication information corresponding to the Scells.

[0187] In the embodiment of the present disclosure, if cross-carrier scheduling is configured, the UE may also receive third configuration information, wherein the third configuration information comprises serving cells supporting cross-carrier scheduling, and the number of informational bits of the wake-up signal is determined based on the number of serving cells supporting cross-carrier scheduling. Alternatively, the number of information bits of the wake-up signal is determined based on the number of Scells indicating activation that do not support cross-carrier scheduling and the number of serving cells in which cross-carrier scheduling is configured. The number of activated Scells that do not support cross-carrier scheduling may also be the number of activated Scell cell(s) (e.g., Scell-2 in FIG. 5) in which cross-carrier scheduling is not configured and the number of serving cells in which cross-carrier scheduling is configured may be the number of serving cell(s) (e.g., Pcell in FIG. 5) in which cross-carrier scheduling is configured and a cif-presence parameter is set to true. For example, the wake-up signal may be a bitmap indicating the associated first indication information (e.g., the Scell triggering / not triggering the first timer or the PDCCH monitoring duration, etc.), wherein each bit of the wake-up signal corresponds to one and / or more cells, and MSB to LSB of the bitmap correspond to the first to last Scells in accordance with identity documents (IDs) of the activated Scell cells in order from low to high. If the Scell cell is cross-carrier scheduled (e.g., Scell-1 in FIG. 5), the Scell cell's ID is not included in the above mapping relationship. Optionally, if the serving cell for which the cif-presence is set to true is a Pcell, the wake-up signal may not trigger the PDCCH monitoring on the Pcell by a 1-bit information indication in the bitmap, and the UE automatically triggers the PDCCH monitoring on the Pcell after receiving the wake-up signal.

[0188] In the embodiment of the present disclosure, for a scheme in which multiple LPWUS MOs configured on a Pcell can be used to transmit different LPWUS signal blocks of an LPWUS for starting a first timer or a PDCCH monitoring duration to perform the PDCCH monitoring of each cell, a method in which a plurality of wake-up signal MOs trigger to start the first timer and / or the PDCCH monitoring duration on the Pcell and on an Scell is provided. Specifically, the UE determines time-domain positions of wake-up signal occasions and / or one or more wake-up signal MOs on the Pcell by at least one of the following information: a period of the configured wake-up signal occasions and / or wake-up signal MOs, the starting position of the wake-up signal occasions and / or the wake-up signal MOs, a duration of the wake-up signal occasions and / or the wake-up signal MOs, and an interval between two wake-up signal MOs, or the like. Optionally, the first starting position of the first timer or the PDCCH monitoring duration on the Pcell is determined based on at least one of the following.

[0189] (1) The ending position of the first one of the at least one wake-up signal MO and the third time interval;

[0190] for example, if the identity information received by the UE on the determined first one of the at least one wake-up signal MO is the same as the local identity information, the UE determines the starting point of triggering or starting the first timer or the PDCCH monitoring duration associated with the wake-up signal on the Pcell based on the ending position of the first one of the at least one wake-up signal MO and the third time interval, and monitors the PDCCH within the first timer or the PDCCH monitoring duration. This scheme may reduce waiting latency for PDCCH monitoring on the Pcell and / or the Scell.

[0191] (2) The ending position of the last one of the at least one wake-up signal MO and the third time interval;

[0192] for example, the UE determines the starting point of triggering or starting the first timer or the PDCCH monitoring duration associated with the wake-up signal on the Pcell based on the ending position of the last one of the at least one wake-up signal MO and the above-described third time interval, and monitors the PDCCH within the first timer or the PDCCH monitoring duration. This scheme avoids a collision between the PDCCH monitoring and the monitoring of the subsequent wake-up signal MOs on the Pcell.

[0193] (3) Determine the ending position of the last wake-up signal MO of the UE's identity information and the third time interval.

[0194] For example, if the identity information is determined by the UE through the information bits of the wake-up signal, when the identity information received by the UE on one of the determined wake-up signal MOs is the same as the local identity information, or when the identity information consisted of a plurality of identity information bit blocks received on a plurality of wake-up signal MOs is the same as the local identity information, the UE determines the starting point of triggering or starting the first timer or the PDCCH monitoring duration associated with the wake-up signal on the Pcell on the basis of determination of the ending position of the last wake-up signal MO of the identity information and the above-described third time interval, and monitors the PDCCH within the first timer or the PDCCH monitoring duration. This scheme may reduce waiting latency for PDCCH monitoring on the Pcell and / or the Scell.

[0195] In the embodiment of the present disclosure, the UE determines the starting position of the first timer or the PDCCH monitoring duration on each activated Scell by an association relationship between the Scell and the wake-up signal MO, the above-described third time interval, and / or a fourth time interval (e.g., a minimum time interval). More specifically, the first configuration information further comprises the fourth time interval, wherein the fourth time interval is a time interval from the ending position of a wake-up signal MO where the first indication information is located to the starting position of starting the first timer or the PDCCH monitoring duration.

[0196] The wake-up signal MO where the first indication information is located is determined based on an association relationship between a secondary base station and the wake-up signal MO, and a position of information bit(s) where the first indication information is located. For example, the UE determines the wake-up signal MO where the first indication information (e.g., the Scell triggering / not triggering the first timer or the PDCCH monitoring duration) of the configured secondary base station is located, by the position of the wake-up signal information bit where the first indication information is located, and the association relationship between the Scell and the wake-up signal MO.

[0197] Optionally, if the first timer or the PDCCH monitoring duration on the Pcell is triggered by the UE, and the starting position (second starting position) of the first timer or the PDCCH monitoring duration on one or more associated Scells, determined by the UE based on the ending position of the wake-up signal MO where the indication information is located and the fourth time interval, is earlier than the starting position (first starting position) of the first timer or the PDCCH monitoring duration on the Pcell, the UE determines that the starting position of the first timer or the PDCCH monitoring duration on the one or more associated Scells is the same as the starting position of the first timer or the PDCCH monitoring duration on the Pcell. That is, when the second starting position is earlier than the first starting position, the first starting position is used as the second starting position. This scheme ensures that the MR can be waked up to perform the PDCCH monitoring on the Pcell and the Scell.

[0198] Alternatively, if the starting position of the first timer or the PDCCH monitoring duration on the one or more associated Scells, determined by the UE based on the ending position of the wake-up signal MO where the indication information wake-up signal is located and the fourth time interval, is later than the starting position of the first timer or the PDCCH monitoring duration on the Pcell, the starting position of the first timer or the PDCCH monitoring duration on the one or more associated Scells is determined based on the ending position of the wake-up signal MO where the indication information is located and the fourth time interval. This approach is because the MR has been woken up by means of the first timer or the PDCCH monitoring duration triggered by the Pcell, when the first timer or the PDCCH monitoring duration on the Scell is triggered, there is no need to wake up the MR, and it is sufficient to retune the radio frequency (RF).

[0199] FIG. 8 is a schematic diagram of monitoring of wake-up signals of serving cells according to an embodiment of the present disclosure.

[0200] Exemplarily, as shown in FIG. 8, the UE is triggered by the first wake-up signal MO to start the first timer or the PDCCH monitoring duration on the Pcell, and the starting position of the first timer or the PDCCH monitoring duration on Scell-1 is determined based on the ending position of the last wake-up signal MO where the indication information wake-up signal is located and the fourth time interval (which may be referred to as an offset). The PDCCH monitored on the Scell-1 may schedule the PDSCH of Scell-2.

[0201] If the UE does not trigger the first timer or the PDCCH monitoring duration on the Pcell, the third starting position of the first timer or the PDCCH monitoring duration for the first one of a plurality of Scells is determined based on the ending position of the wake-up signal MO where the information related to the triggering or non-triggering of the PDCCH monitoring by the first Scell is located and the third time interval, and the UE determines the starting position of the first timer or the PDCCH monitoring duration on the indicated Scell, based on the ending position of the wake-up signal MO where information bits through which the first Scell triggers the first timer or the PDCCH monitoring duration in the indication information are located, and the above-described third time interval.

[0202] Optionally, if the second starting position corresponding to at least one of the plurality of Scells starting from the second Scell is earlier than the third starting position, the third starting position is used as the second starting position corresponding to the at least one Scell. For example, if the starting position of the first timer or the PDCCH monitoring duration on other Scells (the second starting position corresponding to the other Scells), determined by the UE based on the ending position of the wake-up signal MO where information bits (e.g., information bits by which the Scell triggers the first timer or the PDCCH monitoring duration) other than the information bits related to the first Scell in the indication information are located and the fourth time interval, is earlier than a starting position (the third starting position) where the first Scell triggered, the UE determines that the starting position of the first timer or the PDCCH monitoring duration on the other Scells is the same as the starting position where the first Scell triggered.

[0203] Alternatively, if the starting position of the first timer or the PDCCH monitoring duration on the other Scells (the second starting position corresponding to the other Scells), determined by the UE based on the ending position of the wake-up signal MO where information bits (e.g., information bits by which the Scell triggers the first timer or the PDCCH monitoring duration) other than the information bits related to the first Scell in the indication information are located and the fourth time interval, is later than the starting position (the third starting position) where the first Scell triggered, the starting position of the first timer or the PDCCH monitoring duration on the other Scells is determined based on the ending position of the wake-up signal MO where information bits other than the information bits related to the first Scell in the indication information are located and the fourth time interval. This scheme may reduce waiting latency for PDCCH monitoring.

[0204] Optionally, the fourth time interval may include at least one of the wake-up signal processing time, the inter-carrier transition time, or the inter-serving cell transition time.

[0205] Optionally, the granularity of the fourth time interval may be an OFDM symbol.

[0206] In the embodiment of the present disclosure, the first configuration information comprises fourth configuration information related to the wake-up signal of the Pcell, and / or fifth configuration information related to the wake-up signal of the Scell. For example, the UE obtains configuration information of wake-up signal occasions or wake-up signal MOs on the Pcell through an RRC configuration, and the UE obtains configuration information of Scell wake-up signal occasions or wake-up signal MOs through sCellConfigCommon (a common Scell configuration parameter). This scheme may enable the base station to schedule downlink data transmitted on each aggregated carrier more flexibly.

[0207] In the embodiment of the present disclosure, an optional implementation is provided for step S102. Specifically, it may comprise: monitoring the wake-up signal on a serving cell in which cross-carrier scheduling is configured, and monitoring the wake-up signal on a serving cell that does not support cross-carrier scheduling.

[0208] FIG. 9 is a schematic diagram of monitoring of cross-carrier scheduled wake-up signals according to an embodiment of the present disclosure.

[0209] Exemplarily, as shown in FIG. 9, the UE monitors the wake-up signal occasions or the wake-up signal MOs on the serving cell in which cross-carrier scheduling is configured and cif-presence is set to true, such as the corresponding wake-up signal MOs of the Pcell in FIG. 9, and monitors the wake-up signal occasions or the wake-up signal MOs configured on the serving cell in which cross-carrier scheduling is not configured, such as the corresponding wake-up signal MOs of the Scell-2 in FIG. 9. If the UE receives a wake-up signal at the configured wake-up signal occasions or wake-up signal MOs, the wake-up signal triggers PDCCH monitoring on the corresponding serving cell. When the PDCCH monitoring on the Pcell is triggered, the PDCCH monitored on the Pcell can schedule the PDSCH of the Pcell and the Scell-1, and when the PDCCH monitoring on the Scell-2 is triggered, the monitored PDCCH can schedule the PDSCH of the Scell-2.

[0210] Optionally, a method of triggering the PDCCH monitoring by the wake-up signal may be at least one of: triggering or starting a drx-onDurationTimer applied to the current cell, or triggering or starting a first timer or a PDCCH monitoring duration.

[0211] In the embodiment of the present disclosure, for a case where the SCell dormancy indication field in DCIs 0_1 and 1_1 does not exist and the UE is configured with a wake-up signal but not configured with DCI 2-6, in order to ensure proper implementation of the SCell dormancy indication function, a method of using the wake-up signal to indicate SCell dormancy is also provided.

[0212] In an optional implementation, the UE may further: receive an RRC message, the RRC message comprising firstOutsideActiveTime BWP , a dormancy BWP, and cross-carrier scheduling related configuration information, wherein the cross-carrier scheduling related configuration information comprises Scell index when it configures cross-carrier scheduling; and determine that a downlink BWP of the Scell is either the dormancy BWP or the firstOutsideActiveTime BWP when cross-carrier scheduling is configured, based on first indication information indicated by N wake-up signals and Scell index when it configures cross-carrier scheduling, wherein the first configuration information further comprises configuration information related to N wake-up signal MOs associated with serving cell dormancy indication information.

[0213] Optionally, the serving cell dormancy indication information (e.g., SCell dormancy indication information) has a bitmap length of an integer greater than 1.

[0214] Optionally, if dormancyGroupOutsideActiveTime is not configured, the SCell dormancy indication information is 0 bit, otherwise, whether the downlink BWP is the dormancy BWP is determined based on the configured Scell index when cross-carrier scheduling is configured (e.g., SCell dormancy group index). Each bit of the SCell dormancy indication information corresponds to a set of SCell dormancy group indexes, where MSB to LSB of the bitmap correspond to the first to last configured SCell dormancy groups in ascending order of the SCell dormancy group indexes. The SCell dormancy indication information is used to indicate that the downlink BWP used by the corresponding SCell dormancy group index is a BWP indicated by firstOutsideActiveTime BWP (the firstOutsideActiveTime BWP) or the dormancy BWP. If the value of the SCell dormancy indication bit corresponding to the SCell dormancy group index is 0, it means that the downlink BWP is the dormancy BWP, and if the value of the SCell dormancy indication bit corresponding to the SCell dormancy group index is 1, it means that the downlink BWP is an active BWP indicated by firstOutsideActiveTime BWP.

[0215] Optionally, the number of information bits of the dormancy indication information is determined based at least on a number of serving cell dormancy groups. Then, the number of wake-up signal information bits may be determined by at least one of: a length of identity information that can identify one or more UEs, or the number of SCell dormancy groups.

[0216] FIG. 10a is a schematic flow diagram of another method performed by a UE according to an embodiment of the present disclosure.

[0217] In an embodiment of the present disclosure, there is also provided a method performed by a user equipment (UE) in a communication system. As shown in FIG. 10a, the method comprises the following steps.

[0218] Step S201: Receive a radio resource control (RRC) message, the RRC message comprising firstOutsideActiveTime bandwidth part (BWP), a dormancy BWP, and cross-carrier scheduling related configuration information, wherein the cross-carrier scheduling related configuration information comprises an Scell index when it configures cross-carrier scheduling;

[0219] Step S202: Receive fourth configuration information related to a wake-up signal, the fourth configuration information comprising configuration information related to N wake-up signal MOs associated with serving cell dormancy indication information, wherein N is determined based on a number of information bits of one wake-up signal;

[0220] Step S203: Receive N wake-up signals transmitted in the N wake-up signal MOs based on the fourth configuration information; and

[0221] Step S204: Determine, based on the serving cell dormancy indication information indicated by the N wake-up signals and Scell index when it configures cross-carrier scheduling, that a downlink BWP of the Scell is either the dormancy BWP or the firstOutsideActiveTime BWP when cross-carrier scheduling is configured.

[0222] Optionally, the RRC message further comprises a number of serving cell dormancy groups, and the number of information bits of the serving cell dormancy indication information is determined based on the number of the serving cell dormancy groups.

[0223] For the embodiment of the disclosure, the implementation of each step may refer to the description above and will not be repeated herein.

[0224] FIG. 10b is a schematic flow diagram of yet another method performed by a UE according to an embodiment of the present disclosure.

[0225] In the embodiment of the disclosure, for a case where the SCell dormancy indication field in DCIs 0_1 and 1_1 does not exist and the UE is configured with a wake-up signal but not configured with DCI 2-6, in order to ensure proper implementation of the SCell dormancy indication function, there is provided a method performed by a user equipment (UE) in a communication system. As shown in FIG. 10b, the method comprises the following steps.

[0226] Step S301: On a secondary cell (Scell) configured to be scheduled by cross-carrier scheduling, if a physical downlink shared channel (PDSCH) is received which is scheduled by a primary cell (Pcell) or other Scells, start a dormancy timer after a fifth time interval of the ending position of the PDSCH; and

[0227] Step S302: In the case of expiration of the dormancy timer, switch an active downlink BWP to the dormancy BWP.

[0228] Optionally, if a next scheduled PDSCH is received during the operation of the dormancy timer, the dormancy timer is restarted.

[0229] The fifth time interval is a predefined or pre-configured value, and the value of the fifth time interval may also be 0.

[0230] For example, on an Scell configured to be scheduled by cross-carrier scheduling, the UE may start an Scell dormancy timer at a position spaced from when it receives the PDSCH scheduled by the PCell or other SCells by the fifth time interval, and restart the Scell dormancy timer if it receives the next scheduled PDSCH during the operation of the Scell dormancy timer. When the Scell dormancy timer expired, for example, when the Scell dormancy timer decreases to 0, the UE switches the downlink BWP activated for PDSCH reception to the dormancy BWP. This scheme is applicable to a case where the SCell dormancy indication and / or the SCell activation / deactivation function is not configured. Refraining the UE from monitoring the active BWP all the time on carriers or cells where there is no signal and / or data transmission or measuring on the active BWP can reduce the power consumption of the UE monitoring the active BWP.

[0231] In the embodiment of the present disclosure, serving cells in a serving cell dormancy group have an association relationship of activation or dormancy. For example, the association relationship between the SCell dormancy group indexes and the activated SCells may be configured based on the RRC or may be predefined. For example, a cell where cif-presence is set to true and a cell cross-carrier scheduled therethrough may be classified into an Scell dormancy group. The wake-up signal may be a bitmap to indicate whether the PDCCH monitoring is triggered on each associated SCell dormancy group. The methods of triggering the PDCCH monitoring may be at least one of: triggering and starting a drx-onDurationTimer applied to the current cell, or triggering or starting a first timer or a PDCCH monitoring duration. Optionally, if the cell where cif-presence is set to true is a PCell, the wake-up signal does not need to trigger the PDCCH monitoring on the PCell by means of the 1-bit information indication in the bitmap, and the UE automatically triggers the PDCCH monitoring on the PCell after receiving the wake-up signal.

[0232] FIG. 11 is a schematic diagram of a flow in which a wake-up signal triggers PDCCH monitoring when carrier aggregation is configured, according to an embodiment of the present disclosure.

[0233] Based on at least one of the above embodiments, as shown in FIG. 11, an embodiment of the present disclosure provides a flow in which a wake-up signal triggers PDCCH monitoring when carrier aggregation is configured. Specifically, it may comprise: receiving an RRC configuration parameter, and obtaining configuration information of wake-up signal occasions and / or wake-up signal MOs; based on the RRC configuration parameter, monitoring, by the UE, the configured wake-up signal occasions and / or one or more wake-up signal MOs on a main carrier when carrier aggregation is configured, and if the UE receives a wake-up signal, starting, by the UE, a drx-onDurationTimer or a first timer or a PDCCH monitoring duration based on an indication of the wake-up signal, and monitoring a PDCCH on a Pcell and / or the activated Scell or an active BWP within the Scell; or based on the RRC configuration parameter, monitoring, by the UE, the configured wake-up signal occasions and / or wake-up signal MOs on a cell where cif-presence is set to true when carrier aggregation is configure, and if the UE receives a wake-up signal, and / or based on an indication of the wake-up signal, determining whether to start a drx-onDurationTimer or a first timer or a PDCCH monitoring duration on the associated cell, and / or whether to switch an active BWP on the scheduled Scell to the dormancy BWP.

[0234] The method performed by the UE according to the embodiment of the present disclosure can reduce energy consumption of the UE, and further extend the battery life of the UE, while realizing accurate wake-up of the Scell.

[0235] In an embodiment of the present disclosure, there is also provided a method performed by a base station in a communication system, the method comprises the following steps.

[0236] Step S401: Transmit first configuration information related to a wake-up signal, the first configuration information comprising configuration information related to N wake-up signal MOs associated with the wake-up signal, wherein N is determined based on a number of information bits of the wake-up signal; and

[0237] Step S402: Transmit the j-th wake-up signal in the j-th wake-up signal MO based on the first configuration information, wherein j is an integer ranging from 1 to N.

[0238] The first indication information at least comprises at least one of:

[0239] whether to start a discontinuous reception (DRX) duration timer or not;

[0240] activating or deactivating a secondary cell (Scell); or

[0241] whether to trigger a first timer or a PDCCH monitoring duration or not.

[0242] Optionally, the first configuration information further comprises a first time interval, wherein the first time interval is a time interval from the ending position of the last one of the received N wake-up signals or the ending position of the N wake-up signal MOs or the ending position of wake-up signal occasions to the starting of the DRX duration timer.

[0243] Optionally, the first configuration information further comprises a first offset, wherein the first offset is an offset from the starting position of the N wake-up signal MOs or the starting position of the first one of the N wake-up signal MOs to the starting time of the DRX duration timer.

[0244] Optionally, the first configuration information further comprises a second time interval, wherein the second time interval is a time interval from the ending position of the i-th wake-up signal MO to the starting position of the (i+1)-th wake-up signal MO, and i is an integer ranging from 1 to N-1.

[0245] Optionally, the method further comprises: transmitting second configuration information, wherein the second configuration information comprises a number of Scells, and the number of information bits of the wake-up signal is determined based on the number of the Scells.

[0246] Optionally, when the first indication information comprises whether to start a Scell DRX duration timer or not, the N wake-up signals further comprise second indication information, wherein the second indication information comprises UE's identity information;

[0247] When the UE's identity information included in the second indication information is the same as the identity information of the UE, a Pcell DRX duration timer is started.

[0248] Optionally, the first configuration information further comprises a third time interval, wherein the third time interval is a time interval from the ending position of the last one of the received N wake-up signals to the starting position of starting the first timer or the PDCCH monitoring duration.

[0249] Or,

[0250] the third time interval is a time interval from the ending position of M wake-up signal MOs for determining the UE's identity information to the starting position of starting the first timer or the PDCCH monitoring duration, wherein M is an integer ranging from 1 to N.

[0251] Optionally, the third time interval is determined based on inter-carrier transition time and / or inter-serving cell transition time.

[0252] Optionally, the inter-carrier transition time and / or the inter-serving cell transition time is determined based on a smallest sub-carrier spacing (SCS) for PDCCH monitoring on more than one serving cells, or based on a smallest SCS for PDCCH monitoring on serving cells except the serving cell transmitting the wake-up signal.

[0253] Optionally, the first configuration information further comprises a fourth time interval, wherein the fourth time interval is a time interval from the ending position of a wake-up signal MO where the first indication information is located to the starting position of starting the first timer or the PDCCH monitoring duration.

[0254] Optionally, the wake-up signal MO where the first indication information is located is determined based on an association relationship between the Scell and the wake-up signal MO, and a position of information bit(s) where the first indication information is located.

[0255] Optionally, the wake-up signal comprises a wake-up signal information bit block index.

[0256] Optionally, the number of information bits of one wake-up signal is determined by a number of bits occupied by the wake-up signal information bit block index and the number of the Scells.

[0257] Optionally, the method further comprises:

[0258] transmitting third configuration information, wherein the third configuration information comprises serving cells that can be scheduled by cross-carrier scheduling, and the number of information bits of the wake-up signal is determined based on the number of serving cells that support cross-carrier scheduling.

[0259] Optionally, the wake-up signal includes dormancy indication information, and the dormancy indication information is used to indicate whether a downlink BWP of the Scell when cross-carrier scheduling is configured is a dormancy BWP.

[0260] Optionally, the number of information bits of the dormancy indication information is determined based at least on the number of serving cell dormancy groups.

[0261] An embodiment of the present disclosure also provides a method performed by a base station in a communication system, the method comprises:

[0262] Step S501: Transmit an RRC message, the RRC message comprising firstOutsideActiveTime BWP, a dormancy BWP, and cross-carrier scheduling related configuration information, wherein the cross-carrier scheduling related configuration information comprises an Scell index when it configures cross-carrier scheduling;

[0263] Step S502: Transmit fourth configuration information related to a wake-up signal, the fourth configuration information comprising configuration information related to N wake-up signal monitoring occasions associated with serving cell dormancy indication information, wherein N is determined based on the number of information bits of one wake-up signal; and

[0264] Step S503: Transmit the j-th wake-up signal in the j-th wake-up signal MO based on the fourth configuration information, wherein j is an integer ranging from 1 to N.

[0265] The serving cell dormancy indication information indicated by the N wake-up signals and Scell index when it configures cross-carrier scheduling are used for the determination of the downlink BWP of the Scell when cross-carrier scheduling is configured.

[0266] Optionally, the RRC message further comprises a number of serving cell dormancy groups, and the number of information bits of the serving cell dormancy indication information is determined based on the number of serving cell dormancy groups.

[0267] The method performed by the base station according to the embodiment of the present disclosure correspond to the steps of the method performed by the UE, and is similar in implementation principles and have corresponding technical effects. For detailed functional description of the method performed by the base station, the description of the method performed by the UE shown above can be referred to and will not be repeated herein.

[0268] An embodiment of the present disclosure provides an electronic device comprising a processor, and optionally further comprising a transceiver and / or a memory coupled to the processor, wherein the processor is configured to perform steps of the method according to any optional embodiment of the present disclosure. Optionally, the electronic device may refer to a UE, then the processor is configured to realize the steps of respective method embodiments performed by the UE, the detailed functional description thereof and the resulting beneficial effects may specifically refer to the description of the respective method embodiments performed by the UE hereinabove, and will not be repeated herein. Optionally, the electronic device may refer to a base station, then the processor is configured to implement steps of respective method embodiments performed by the base station, and the detailed functional description thereof and the resulting beneficial effects may specifically refer to in the description of the respective method embodiments performed by the base station hereinabove, and will not be repeated herein. In practical applications, the UE or the base station may be understood as different network nodes.

[0269] An embodiment of the present disclosure further provides an electronic device, including at least one controller / processor, and optionally at least one transceiver coupled to the at least one controller / processor. The processor is configured to implement the method provided in any one of optional embodiments of the present disclosure.

[0270] FIG. 12 is a schematic diagram of a structure of an electronic device according to an embodiment of the present disclosure.

[0271] FIG. 12 shows a schematic structure diagram of an electronic device to which the solution of the embodiment of the present disclosure is applied. As shown in FIG. 12, the electronic device 4000 shown in FIG. 12 may include a processor 4001 and a memory 4003. The processor 4001 is connected to the memory 4003, for example, through a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004 that can be used for data exchange, for example, transmission and reception of data, between the electronic device and other electronic device. It should be noted that, in practical applications, the number of transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute any limitations to the embodiments of the present disclosure. Optionally, the electronic device may be gNB, UE or other entities or node in communication networks.

[0272] The processor 4001 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules and circuits described in connection with the present disclosure. The processor 4001 may also be a combination for realizing computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0273] The bus 4002 may include a path to transfer information between the components described above. The bus 4002 may be a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. The bus 4002 may be an address bus, a data bus, a control bus, etc. For ease of presentation, the bus is represented by only one thick line in FIG. 12. However, it does not mean that there is only one bus or one type of buses.

[0274] The memory 4003 may be, but not limited to, read only memories (ROMs) or other types of static storage devices that can store static information and instructions, random access memories (RAMs) or other types of dynamic storage devices that can store information and instructions, may be electrically erasable programmable read only memories (EEPROMs), compact disc read only memories (CD-ROMs) or other optical disk storages, optical disc storages (including compact discs, laser discs, discs, digital versatile discs, blue-ray discs, etc.), magnetic storage media or other magnetic storage devices, or any other media that can carry or store desired program codes in the form of instructions or data structures and that can be accessed by computers.

[0275] The memory 4003 is used to store computer program for executing the solutions of the present disclosure, and is controlled by the processor 4001. The processor 4001 is used to execute the computer program stored in the memory 4003 to implement the solution provided in any method embodiment described above.

[0276] Embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, the computer program, when executed by a processor, implements the steps and corresponding contents of the foregoing method embodiments.

[0277] Embodiments of the present disclosure also provide a computer program product including a computer program, the computer program when executed by a processor realizing the steps and corresponding contents of the preceding method embodiments.

[0278] FIG. 13 is a block diagram of a terminal or user equipment (UE) 1300 according to an embodiment of the disclosure.

[0279] The terminal is an electronic device capable of wireless communication, may include a User Equipment (UE), a portable phone, a smartphone, a tablet, an Internet of things (IoT) device, etc., having various form factors, and may perform wireless communication with a base station (BS) through a wireless channel.

[0280] Referring to FIG. 13, the UE 1300 may include at least one transceiver (hereinafter, referred to as simply “transceiver”) 1301, at least one processor (hereinafter, referred to as simply “processor”) 1302, and at least one memory (hereinafter, referred to as simply “memory”) 1303. According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the transceiver 1301, the processor 1302, and the memory 1303 of the UE 1300 may operate. However, components of the UE 1300 are not limited to the exemplary components illustrated in FIG. 13. In another embodiment, the UE 1300 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in some embodiments, any combination of the transceiver 1301, the processor 1302, or the memory 1303 may be integrated in the form of one component. Furthermore, the UE of FIG. 13 corresponds to the UE of FIG. 1, FIG. 3a, and the electronic device of FIG. 12.

[0281] The transceiver 1301 may be a communication circuit or communication circuitry that enables the UE 1300 to perform wireless communication with a node or an entity of a network. For example, the transceiver 1301 may enable the UE 1300 to transmit or receive a signal to or from a BS through cellular communication, or to transmit or receive a signal to or from another UE through cellular communication. For example, the transceiver 1301 may support at least one of various cellular communication technologies including 3rd generation (3G), 4th generation (4G), long term evolution (LTE), 5th generation (5G) NR, 6th generation (6G), and various cellular wireless communication technologies supported by the transceiver (1301) may include all subsequent generations of evolved wireless communications.

[0282] According to an embodiment, the UE 1300 may include a plurality of transceivers. For example, in the case of supporting evolved-universal terrestrial radio access-new radio (E-UTRA-NR) sual connectivity (EN-DC), the UE 1300 may include a first transceiver supporting the 4G LTE wireless communication and a second transceiver supporting the 5G NR wireless communication. According to another embodiment, in the case of supporting NR-dual connectivity (NR-DC), the UE 1300 may include a plurality of transceivers supporting the 5G NR wireless communication. According to still another embodiment, in the case of supporting near field wireless communication, the UE 1300 may separately include a transceiver supporting at least one standard in the group of wireless communication protocol standards as defined in the protocol standards for Bluetooth®, wireless local area network (WLAN) network (including institute of electrical and electronics engineers (IEEE) 802.11-2016 standard or its amendments, e.g., 802.11ah, 802.11ad, 802.11ay, 802.11ax, 802.11az, 802.11ba, and 802.11be, without being limited thereto).

[0283] According to an embodiment, the transceiver 1301 may include various circuit structures used to transmit or receive signals to or from a BS through a wireless channel. The signals may include control information and data. For example, the transceiver 1301 may include a radio frequency (RF) transmitter for up-converting and amplifying the frequency of a transmitted signal and an RF receiver for low-noise-amplifying a received signal and down-converting the frequency thereof. The transceiver 1301 may output a signal received through a wireless channel to the processor 1302 and may transmit, through a wireless channel, a signal output from the processor 1302.

[0284] The processor 1302 may control general operations of the UE 1300 according to embodiments of the disclosure. The processor 1302 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 1302 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 1303, individually, collectively or in any combination thereof. Further, the processor 1302 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme.

[0285] The processor 1302 may be electrically, operatively, or communicatively coupled to the transceiver 1301 to control the transceiver 1301.

[0286] The processor 1302 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. For example, the processor 1302 may include a communication processor (CP) configured to control communication operations and an application processor (AP) configured to control execution of an upper layer (for example, an application layer) . In a specific embodiment, at least a part of the processor 1302 may be included in one chip and the other part of the processor 1302 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the transceiver 1301 or the memory 1303.

[0287] The processor 1302 may perform or control or cause an operation of the UE 1300 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 1302 may control operations of the UE 1300 for processing a downlink signal received from a BS or generating and transmitting an uplink signal to a BS. To this end, the processor 1302 may execute a computer program, codes, or instructions stored in the memory 1303, so as to control other components of the UE 1300 to enable execution of various operations.

[0288] The memory 1303 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 1303 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0289] The memory 1303 may be electrically, operatively, or communicatively coupled to the processor 1302 and may be accessed by the processor 1302.

[0290] The memory 1303 may store a computer program, codes, or instructions executable by the processor 1302. According to an embodiment, a computer program, codes, or instructions executable by the processor 1302 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 1303, the processor 1302 may perform various functions according to an embodiment of the disclosure.

[0291] According to an embodiment of the disclosure, operations of the UE 1300 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 1303 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0292] FIG. 14 is a block diagram of a base station (BS) 1400 according to an embodiment of the disclosure.

[0293] The BS 1400 may perform wireless communication with at least one user equipment (UE) located within the area of the BS 1400 through a wireless channel.

[0294] Referring to FIG. 14, the BS 1400 may include at least one transceiver (hereinafter, referred to as simply “transceiver”) 1401, at least one processor (hereinafter, referred to as simply “processor”) 1402, and at least one memory (hereinafter, referred to as simply “memory”) 1403. According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the transceiver 1401, the processor 1402, and the memory 1403 of the BS 1400 may operate. However, components of the BS 1400 are not limited to the exemplary components illustrated in FIG. 14. In another embodiment, the BS 1400 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in some embodiments, any combination of the transceiver 1401, the processor 1402, or the memory 1403 may be integrated in the form of one component. Furthermore, the BS of FIG. 14 corresponds to the BS of FIG. 1, FIG. 3b, and the electronic device of FIG. 12.

[0295] The transceiver 1401 may be a communication circuit or communication circuitry that enables the BS 1400 to perform wireless communication with a node or an entity of a network. For example, the transceiver 1401 may enable the BS 1400 to transmit or receive a signal to or from the UE X00 through cellular communication, or to transmit or receive a signal to or from another network entity through wireless communication. For example, the transceiver 1401 may support various cellular communication technologies including 3rd generation (3G), 4th generation (4G), long term evolution (LTE), 5th generation (5G) NR, 6th generation (6G), and various cellular wireless communication technologies supported by the transceiver (1401) may include all subsequent generations of evolved wireless communications.. According to an embodiment, the transceiver 1401 may include various circuit structures used to transmit or receive signals to or from a UE through a wireless channel. The signals may include control information and data. For example, the transceiver 1401 may include a radio frequency (RF) transmitter for up-converting and amplifying the frequency of a transmitted signal and an RF receiver for low-noise-amplifying a received signal and down-converting the frequency thereof. The transceiver 1401 may output a signal received through a wireless channel to the processor 1402 and may transmit, through a wireless channel, a signal output from the processor 1402.

[0296] Meanwhile, according to an embodiment of the present disclosure, the BS 1400 may perform communication with a node or an entity of a network through wired or wireless communication. For example, the BS 1400 may perform wired or wireless communication with an adjacent BS, or a node or an entity of a core network through a backhaul network. Although not illustrated in FIG. 14, when the BS 1400 performs wired communication, the BS 1400 may further include a separate network interface for wired communication in addition to the transceiver 1401. The network interface may be referred to as network interface circuitry or communication interface circuitry.

[0297] The processor 1402 may control general operations of the BS 1400 according to embodiments of the disclosure. The processor 1402 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 1402 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 1403, individually, collectively or in any combination thereof. Further, the processor 1402 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme.

[0298] The processor 1402 may be electrically, operatively, or communicatively coupled to the transceiver 1401 to control the transceiver 1401.

[0299] The processor 1402 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. In a specific embodiment, at least a part of the processor 1402 may be included in one chip and the other part of the processor 1402 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the transceiver 1401 or the memory 1403.

[0300] The processor 1402 may perform or control or cause an operation of the BS 1400 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 1402 may control operations of the BS 1400 for generating and transmitting a downlink signal to a UE or processing an uplink signal received from a UE. Otherwise, the BS 1400 may transmit or receive a signal to or from a neighboring BS, transfer a signal received from a UE to an upper node of the network, or transmit a signal transferred from an upper node of the network to a UE. To this end, the processor 1402 may execute a computer program, codes, or instructions stored in the memory 1403, so as to control other components of the BS 1400 to enable execution of various operations.

[0301] The memory 1403 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 1403 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0302] The memory 1403 may be electrically, operatively, or communicatively coupled to the processor 1402 and may be accessed by the processor 1402.

[0303] The memory 1403 may store a computer program, codes, or instructions executable by the processor 1402. According to an embodiment, a computer program, codes, or instructions executable by the processor 1402 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 1403, the processor 1402 may perform various functions according to an embodiment of the disclosure.

[0304] According to an embodiment of the disclosure, operations of the BS 1400 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 1403 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0305] The UE or the base station may perform various communication procedures related to the control plane or the user plane by cooperating with one or more network entities based on wireless communication. For example, the UE may communicate with network entity such as an Access and Mobility Management Function (AMF) or a Session Management Function (SMF) via the base station, or the base station may perform at least one communication procedure by directly transmitting and receiving signals to / from, or relaying signals between, the network entities.

[0306] The structure of the above-described network entity will be described in more detail with reference to the drawings.

[0307] FIG. 15 is a block diagram of a network entity 1500 according to an embodiment of the disclosure.

[0308] The network entity 1500 may include an entity (apparatus, device, or server, etc.) that performs one or more network functions (NFs) or a part of a network function constituting a core network (e.g., a 5th generation (5G) core (5GC)) in a communication system. In this case, multiple NFs may be implemented within a single network entity, or a single NF may be distributed and implemented across a plurality of network entities. In addition, when an NF is implemented within the network entity, the NF may be implemented in the form of software, and in such a case, a program for operating the NF may be stored in memory of the network entity 1500.

[0309] A single NF may be implemented by one or more instances, which may be deployed on the same network entity or distributed across multiple network entities to operate. The instance may be a software unit that logically executes a specific network function, and may be implemented in a form that is decoupled from physical hardware resources. Further, one or more NFs may be implemented in the form of one network slice to operate to satisfy specifications required by a particular service.

[0310] The NF may include at least one of an access and mobility management function (AMF), a session management function (SMF), a local session management function (L-SMF), a user plane function (UPF), a local user plane function (L-UPF), a policy control function (PCF), a unified data management (UDM), a unified data repository (UDR), a network exposure function (NEF), a network repository function (NRF), an application function (AF), a network slice selection function (NSSF), a network data analytics function (NWDAF), a network slice admission control function (NSACF), an authentication server function (AUSF), or a data network (DN).

[0311] Referring to FIG. 15, the network entity 1500 may include at least one network interface 1501, at least one processor 1502 (hereinafter, “processor”), and at least one memory 1503 (hereinafter, “memory”). As described above, a NF may be implemented in the form of a physical device such as the network entity 1500, or may be virtualized and executed in the form of an instance. When implemented as an instance, the NF need not necessarily include physical components as illustrated in FIG. 15. In such a case, the instance may be logically represented as comprising one or more logical functional elements. Furthermore, the NE of FIG. 15 corresponds to an NE in the network of FIG. 1.

[0312] According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the network interface 1501, the processor 1502, and the memory 1503 of the network entity 1500 may operate. However, components of the network entity 1500 are not limited to the exemplary components illustrated in FIG. 15. In another embodiment, the network entity 1500 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in an embodiment, the network interface 1501, the processor 1502, or the memory 1503 may be integrated in the form of one component.

[0313] The network interface 1501 is a collective term for a transmitter part of the network entity 1500 and a receiver part of the network entity 1500, and may be a communication circuit for transmitting or receiving a signal to or from a user equipment (UE), a base station (BS), or another network entity. Here, the communication circuit may include both a communication circuit for wireless communication and a communication circuit for a wired communication. For example, the network interface 1501 may include a circuit, logic, hardware, etc., configured to exchange a control plane message or a user plane message with a UE, a BS, or other core network entities through wireless communication or wired communication. The network interface 1501 may operate using various protocols (e.g., non-access stratum (NAS) protocol). The network interface 1501 may also be referred to, for convenience of description or depending on implementation, as communication circuitry, network interface circuitry, or a communication interface circuitry.

[0314] The processor 1502 may control general operations of the network entity 1500 according to embodiments of the disclosure. The processor 1502 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 1502 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 1503, individually, collectively or in any combination thereof. Further, the processor 1502 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme. Further, it should be noted that, according to another embodiment, in a case where NF is implemented in the form of an instance, the network function may be not necessarily configured by physical hardware.

[0315] According to an embodiment, the processor 1502 may be electrically, operatively, or communicatively coupled to the network interface 1501 to control the network interface 1501.

[0316] The processor 1502 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. In a specific embodiment, at least a part of the processor 1502 may be included in one chip and the other part of the processor 1502 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the network interface 1501 or the memory 1503.

[0317] The processor 1502 may perform or control or cause an operation of the network entity 1500 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 1502 may control operations of the network entity 1500 for exchanging a control plane message or a user plane message with a UE, a BS, or other core network entities through wireless or wired communication, using various protocols (e.g., NAS protocol). To this end, the processor 1502 may execute a computer program, codes, or instructions stored in the memory 1503, so as to control other components of the network entity 1500 to enable execution of various operations.

[0318] The memory 1503 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 1503 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0319] The memory 1503 may be electrically, operatively, or communicatively coupled to the processor 1502 and may be accessed by the processor 1502.

[0320] The memory 1503 may store a computer program, codes, or instructions executable by the processor 1502. According to an embodiment, a computer program, codes, or instructions executable by the processor 1502 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 1503, the processor 1502 may perform various functions according to an embodiment of the disclosure.

[0321] According to an embodiment of the disclosure, operations of the network entity 1500 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 1503 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0322] It is an object of embodiments of the present disclosure to be able to address the technical problem of how to reduce energy consumption of the UE.

[0323] Embodiments of the present disclosure provide a communication method, a user equipment, and a base station. The method comprises: receiving first configuration information related to a wake-up signal, the first configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with the wake-up signal, wherein N is determined based on a number of information bits of one wake-up signal; receiving N wake-up signals transmitted in the N wake-up signal MOs based on the first configuration information; determining whether to monitor a physical downlink control channel (PDCCH) based on first indication information indicated by the N wake-up signals, wherein the first indication information at least comprises at least one of: whether to start a discontinuous reception (DRX) duration timeror not; activating or deactivating a secondary cell (Scell); or whether to trigger a first timer or a PDCCH monitoring duration or not, whereby the UE may realize monitoring the wake-up signal and waking up the UE at extremely low power, thereby reducing energy consumption of the UE and further extending the battery life of the UE.

[0324] According to an aspect of the embodiments of the present disclosure, there is provided a method performed by a UE in a communication system, the method comprises:

[0325] receiving first configuration information related to a wake-up signal, the first configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with the wake-up signal, wherein N is determined based on a number of information bits of one wake-up signal;

[0326] receiving N wake-up signals transmitted in the N wake-up signal MOs based on the first configuration information; and

[0327] determining whether to monitor a physical downlink control channel (PDCCH) based on first indication information indicated by the N wake-up signals,

[0328] wherein the first indication information at least comprises at least one of:

[0329] whether to start a discontinuous reception (DRX) duration timer or not;

[0330] activating or deactivating a secondary cell (Scell); or

[0331] whether to trigger a first timer or a PDCCH monitoring duration or not.

[0332] Optionally, the first configuration information further comprises a first time interval, wherein the first time interval is a time interval from the ending position of the last one of the received N wake-up signals or the ending position of the N wake-up signal MOs or the ending position of wake-up signal occasions to the starting of the DRX duration timer.

[0333] Optionally, the first configuration information further comprises a first offset, wherein the first offset is an offset from the starting position of the N wake-up signal MOs or the starting position of the first one of the N wake-up signal MOs to the starting time of the DRX duration timer.

[0334] Optionally, the first configuration information further comprises a second time interval, wherein the second time interval is a time interval from the ending position of the i-th wake-up signal MO to the starting position of the (i+1)-th wake-up signal MO, and i is an integer ranging from 1 to N-1.

[0335] Optionally, the method further comprises: receiving second configuration information, wherein the second configuration information comprises a number of Scells, and the number of information bits of the wake-up signal is determined based on the number of the Scells.

[0336] Optionally, when the first indication information comprises whether to start an Scell DRX duration timer or not, the N wake-up signals further comprise a second indication information, wherein the second indication information comprises UE's identity information;

[0337] when the UE's identity information included in the second indication information is the same as identity information of the UE, a primary cell DRX duration timer is started.

[0338] Optionally, the first configuration information further comprises a third time interval, wherein the third time interval is a time interval from the ending position of the last one of the received N wake-up signals to the starting position of starting the first timer or the PDCCH monitoring duration;

[0339] or,

[0340] the third time interval is a time interval from the ending position of M wake-up signal MOs for determining the UE's identity information to the starting position of starting the first timer or the PDCCH monitoring duration, wherein M is an integer ranging from 1 to N.

[0341] Optionally, the third time interval is determined based on inter-carrier transition time and / or inter-serving cell transition time.

[0342] Optionally, the inter-carrier transition time and / or the inter-serving cell transition time is determined based on a smallest sub-carrier spacing (SCS) for PDCCH monitoring on more than one serving cells, or based on a smallest SCS for PDCCH monitoring on serving cells except the serving cell transmitting the wake-up signal.

[0343] Optionally, the first configuration information further comprises a fourth time interval, wherein the fourth time interval is a time interval from the ending position of a wake-up signal MO where the first indication information is located to the starting position of starting the first timer or the PDCCH monitoring duration.

[0344] Optionally, the wake-up signal MO where the first indication information is located is determined based on an association relationship between the Scell and the wake-up signal MO, and a position of information bit(s) where the first indication information is located.

[0345] Optionally, the wake-up signal comprises a wake-up signal information bit block index.

[0346] Optionally, the number of information bits of one wake-up signal is determined by a number of bits occupied by the wake-up signal information bit block index and the number of the Scells.

[0347] Optionally, the method further comprises:

[0348] receiving third configuration information, wherein the third configuration information comprises serving cells that can be scheduled by cross-carrier scheduling, and the number of information bits of the wake-up signal is determined based on the number of serving cells that support cross-carrier scheduling.

[0349] Optionally, the method further comprises:

[0350] receiving a radio resource control (RRC) message, the RRC message comprising firstOutsideActiveTime bandwidth part (BWP), dormancy BWP, and cross-carrier scheduling related configuration information, wherein the cross-carrier scheduling related configuration information comprises an Scell index when it configures cross-carrier scheduling; and

[0351] determining, based on the first indication information indicated by the N wake-up signals and Scell index when it configures cross-carrier scheduling, that a downlink BWP of the Scell is either the dormancy BWP or the firstOutsideActiveTime BWP when cross-carrier scheduling is configured,

[0352] wherein the first configuration information further comprises configuration information related to N wake-up signal MOs associated with serving cell dormancy indication information.

[0353] According to another aspect of the embodiments of the present disclosure, there is also provided a method performed by a UE in a communication system, the method comprises:

[0354] receiving a radio resource control (RRC) message, the RRC message comprising firstOutsideActiveTime bandwidth part (BWP), a dormancy BWP, and cross-carrier scheduling related configuration information, wherein the cross-carrier scheduling related configuration information comprises a secondary cell (Scell) index when it configures cross-carrier scheduling;

[0355] receiving fourth configuration information related to a wake-up signal, the fourth configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with serving cell dormancy indication information, wherein N is determined based on a number of information bits of one wake-up signal;

[0356] receiving N wake-up signals transmitted in the N wake-up signal MOs based on the fourth configuration information; and

[0357] determining, based on the serving cell dormancy indication information indicated by the N wake-up signals and Scell index when it configures cross-carrier scheduling, that a downlink BWP of the Scell is either the dormancy BWP or the firstOutsideActiveTime BWP when cross-carrier scheduling is configured.

[0358] Optionally, the RRC message further comprises a number of serving cell dormancy groups, and the number of information bits of the serving cell dormancy indication information is determined based on the number of serving cell dormancy groups.

[0359] According to another aspect of the embodiments of the present disclosure, there is also provided a method performed by a UE in a communication system, the method comprises:

[0360] on a secondary cell (Scell) configured to be scheduled by cross-carrier scheduling, if a physical downlink shared channel (PDSCH) is received which is scheduled by a primary cell (Pcell) or other Scells, a dormancy timer is started after a fifth time interval of the ending position of the PDSCH.

[0361] In the case of expiration of the dormancy timer, an active downlink BWP is switched to the dormancy BWP.

[0362] Optionally, the method further comprises:

[0363] restarting the dormancy timer if a next scheduled PDSCH is received during the operation of the dormancy timer.

[0364] According to another aspect of the embodiments of the present disclosure, there is provided a method performed by a base station in a communication system, the method comprises:

[0365] transmitting first configuration information related to a wake-up signal, the first configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with the wake-up signal, wherein N is determined based on a number of information bits of one wake-up signal; and

[0366] transmitting a j-th wake-up signal in a j-th wake-up signal MO based on the first configuration information, wherein j is an integer ranging from 1 to N,

[0367] wherein the first indication information at least comprises at least one of:

[0368] whether to start a discontinuous reception (DRX) duration timer or not;

[0369] activating or deactivating a secondary cell (Scell); or

[0370] whether to trigger a first timer or a physical downlink control channel (PDCCH) monitoring duration or not.

[0371] According to a further aspect of the embodiments of the present disclosure, there is also provided a method performed by a base station in a communication system, the method comprises:

[0372] transmitting a radio resource control (RRC) message, the RRC message comprising firstOutsideActiveTime bandwidth part (BWP), a dormancy BWP, and cross-carrier scheduling related configuration information, wherein the cross-carrier scheduling related configuration information comprises a secondary cell (Scell) index when it configures cross-carrier scheduling;

[0373] transmitting fourth configuration information related to a wake-up signal, the fourth configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with serving cell dormancy indication information, wherein N is determined based on a number of information bits of one wake-up signal; and

[0374] transmitting a j-th wake-up signal in a j-th wake-up signal MO based on the fourth configuration information, wherein j is an integer ranging from 1 to N,

[0375] wherein the serving cell dormancy indication information indicated by the N wake-up signals and Scell index when it configures cross-carrier scheduling are used in the determination of a downlink BWP of the Scell when cross-carrier scheduling is configured.

[0376] According to yet another aspect of the embodiments of the present disclosure, there is provided a user equipment (UE) comprising:

[0377] a transceiver; and

[0378] a processor coupled to the transceiver and configured to perform the method performed by the UE in the communication system according to the embodiments of the present disclosure.

[0379] According to still another aspect of the embodiments of the present disclosure, there is provided a base station comprising:

[0380] a transceiver; and

[0381] a processor coupled to the transceiver and configured to perform the method performed by the base station in the communication system according to the embodiments of the present disclosure.

[0382] According to a still further aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having a computer program stored thereon, that when the computer program is executed by a processor, implements the method performed by the UE or the base station in the communication system according to the embodiments of the present disclosure.

[0383] According to a still further aspect of the embodiments of the present disclosure, there is provided a computer program product comprising a computer program, that when executed by a processor, implements the method performed by the UE or the base station in the communication system according to the embodiments of the present disclosure.

[0384] In the communication method, the user equipment, and the base station according to the embodiments of the present disclosure, the UE realizes monitoring the wake-up signal and waking up the UE at extremely low power, thereby reducing energy consumption of the UE and further extending the battery life of the UE, by: receiving first configuration information related to a wake-up signal, the first configuration information comprising configuration information related to N wake-up signal monitoring occasions (MOs) associated with the wake-up signal, wherein N is determined based on a number of information bits of one wake-up signal; receiving N wake-up signals transmitted in the N wake-up signal MOs based on the first configuration information; determining whether to monitor a physical downlink control channel (PDCCH) based on first indication information indicated by the N wake-up signals, wherein the first indication information at least comprises at least one of: whether to start a discontinuous reception (DRX) duration timer or not; activating or deactivating a secondary cell (Scell); whether to trigger a first timer or a PDCCH monitoring duration or not.

[0385] The terms "first", "second", "third", "fourth", "1", "2", etc. (if present) in the specification and claims of this application and the accompanying drawings above are used to distinguish similar objects and need not be used to describe a particular order or sequence. It should be understood that the data so used is interchangeable where appropriate so that embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described in the text.

[0386] It should be understood that while the flow diagrams of embodiments of the present disclosure indicate the individual operational steps by arrows, the order in which these steps are performed is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of embodiments of the present disclosure, the implementation steps in the respective flowcharts may be performed in other orders as desired. In addition, some, or all of the steps in each flowchart may include multiple sub-steps or multiple phases based on the actual implementation scenario. Some or all of these sub-steps or stages can be executed at the same moment, and each of these sub-steps or stages can also be executed at different moments separately. The order of execution of these sub-steps or stages can be flexibly configured according to requirements in different scenarios of execution time, and the embodiments of the present disclosure are not limited thereto.

[0387] The above-mentioned description and the drawings are provided merely as examples to help readers to understand the present disclosure, and they should not be interpreted or aim to limit the scope of the present disclosure in any way. Although some embodiments are provided, it is apparent for those skilled in the art to adopt other similar implementation means based on the technical idea of the present disclosure without departing from the technical concept of the solution of the present disclosure.

[0388] Meanwhile, although specific embodiments of the present disclosure have been described in detail, various modifications may be made without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be defined by the claims and equivalents thereof.

Claims

1.A method performed by a user equipment, UE, in a wireless communication system, the method comprising:receiving, from a base station, BS, configuration information on wake-up signal, WUS, monitoring occasions, MOs, in a radio resource control, RRC, connected state;receiving, from the BS, a WUS on a primary cell based on a period and a first time offset included in the configuration information;identifying to monitor a physical downlink control channel, PDCCH, based on the WUS; andstarting a timer for the PDCCH monitoring.2.The method of Claim 1, further comprising:monitoring the PDCCH on the primary cell and at least one secondary cell.3.The method of Claim 1,wherein the timer is a discontinuous reception, DRX, on-duration timer.4.The method of Claim 3, wherein the receiving the WUS further comprises:monitoring the WUS starting from a first WUS MO which is prior to a starting of the DRX on-duration timer by a second time offset.5.The method of Claim 1, wherein the timer is a timer for the PDCCH monitoring related to the WUS.6.The method of Claim 5, wherein the starting the timer further comprises:starting the timer after a time interval with respect to a first WUS MO .7.The method of Claim 6, further comprising:wherein the configuration information further comprises information on the number of the WUS MOs.8.A method performed by a base station, BS, in a wireless communication system, the method comprising:transmitting, to a user equipment, UE, configuration information on wake-up signal, WUS, monitoring occasions, MOs;transmitting, to the UE, a WUS on a primary cell based on a period and a first time offset included in the configuration information; andtransmitting, to the UE, a physical downlink control channel, PDCCH, based on the WUS, wherein a timer related with the WUS is started for the PDCCH.9.A user equipment, UE, comprising:at least one transceiver;at least one processor communicatively coupled to the at least one transceiver; andat least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the UE to:receive, from a base station, BS, configuration information on wake-up signal, WUS, monitoring occasions, MOs, in a radio resource control, RRC, connected state;receive, from the BS, a WUS on a primary cell based on a period and a first time offset included in the configuration information;identify to monitor a physical downlink control channel, PDCCH, based on the WUS; andstart a timer for the PDCCH monitoring.10.The UE of Claim 9, wherein the instructions further cause the UE to:monitor the PDCCH on the primary cell and at least one secondary cell.11.The UE of Claim 9,wherein the timer is a discontinuous reception, DRX, on-duration timer.12.The UE of Claim 11, wherein the instructions further cause the UE to:monitor the WUS starting from a first WUS MO which is prior to a starting of the DRX on-duration timer by a second time offset.13.The UE of Claim 9, wherein the timer is a timer for the PDCCH monitoring related to the WUS.14.The UE of Claim 13, wherein the instructions further cause the UE to:start the timer after a time interval with respect to a first WUS MO .15.The UE of Claim 14, wherein the configuration information further comprises information on the number of the WUS MOs.

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