Method and apparatus for performing measurement in a communication system

Abstract

The present disclosure provides a method performed by a UE comprising: receiving a first message comprising an N1 DTX configuration comprising DTX configurations of a serving; receiving a second message comprising a list of CSI configuration of neighbor cells; based on the first message and the second message, performing L1-RSRP measurement of the serving cell in a first time period; reporting a measurement result determined based on the L1-RSRP measurement, wherein the first time period is determined based on a cycle in the DTX configuration of the serving cell or the beams of the serving cell and a time domain location of the at least one of the SSB resources or the CSI-RS resources, and wherein N1 is a natural number less than or equal to a total number of beams supported by the base station.

Description

METHOD AND APPARATUS FOR PERFORMING MEASUREMENT IN A COMMUNICATION SYSTEM

[0001] The present application relates to generally to the field of wireless communication technology, and more specifically to methods and apparatuses for performing measurement(s).

[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 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] This application provides a method for a User Equipment (UE) to perform measurement and a corresponding device. Through the method of the present disclosure, measurements between the network and the UE can be realized using multiple beams transmitted by a base station (such as a satellite).

[0009] According to an aspect of the present disclosure, there is provided a method performed by the UE in a wireless communication system, the method including: receiving, from a base station, a first message comprising an N1 discontinuous reception (DTX) configuration comprising DTX configurations of a serving cell or DTX configurations of beams of the serving cell; receiving, from the base station, a second message comprising a list of channel state information (CSI) configurations of neighbor cells, wherein the CSI configurations comprise at least one of information for at least one neighbor cell and the information for at least one neighbor cell includes at least one of a cell identity of a neighbor cell, a synchronization signal block (SSB) periodicity, a CSI-reference signal (CSI-RS) periodicity, an SSB index, or a CSI-RS index; based on the first message and the second message, performing layer 1 (L1)-reference signal received power (RSRP) measurement of the serving cell in a first time period; and reporting a measurement result determined based on the L1-RSRP measurement, wherein the L1-RSRP measurement is performed based on at least one of SSB resources or CSI-RS resources, wherein the first time period is determined based on a cycle in the DTX configuration of the serving cell or the beams of the serving cell and a time domain location of the at least one of the SSB resources or the CSI-RS resources, wherein the time domain location of the at least one of the SSB resources or the CSI-RS resources is determined based on the list of CSI configurations of the neighboring cell, and wherein N1 is a natural number less than or equal to a total number of beams supported by the base station.

[0010] In one embodiment, the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell or beams of the serving cell; a UE DRX cycle; SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources of the neighbor cells; and time domain locations of the CSI-RS resources of the neighbor cells.

[0011] In one embodiment, the first time period is determined based on at least one of the following: maximum one among cycle in the DTX configuration of the serving cell or the DTX configuration of beams of the serving cell, the UE DRX cycle, the SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources of the neighbor cells; and the time domain locations of the CSI-RS resources of the neighbor cells.

[0012] In one embodiment, the N1 DTX configurations further include information on DTX configurations of the neighbor cells or beams of the neighbor cells, and the DTX configuration of each neighbor cell or beams of the neighbor cell is determined based on at least one of a the cell identity of the serving cell or the neighbor cell and the SSB index or the CSI-RS index in the N1 DTX configurations.

[0013] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell and whether an RS resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in the time domain, wherein the RS resource includes at least one of SSB resources or CSI-RS resources.

[0014] In one embodiment, the method may further include: based on the first message, measuring the serving cell at least once in a sixth time period at every sixth time period; evaluating whether the serving cell fulfills S criteria; and in case that the UE has evaluated that the serving cell does not fulfil the S criteria within a seventh time period, initiating measurement of the neighbor cells; wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell.

[0015] In one embodiment, the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and a UE DRX cycle.

[0016] In one embodiment, the sixth time period or the seventh time period is determined based on the maximum one among the cycle in the DTX configuration of the serving cell or DTX configuration of the beams of the serving cell and the UE DRX cycle.

[0017] In one embodiment, the method further includes: receiving a list of neighbor cells from the base station, wherein the list of neighbor cells comprises a cell identification of at least one neighbor cell, wherein the measurement of neighbor cells comprises at least one of: identifying, by the UE, a newly detectable intra-frequency cell or inter-frequency cell from the list of neighbor cells within an eighth time period or a ninth time period; for the identified cell, measuring, by the UE, SS-RSRP and SS-RSRQ of the cell at every tenth time period or eleventh time period; and for the identified cell, evaluating, by the UE, whether the cell satisfies cell reselection criteria in a twelfth time period or a thirteenth time period, wherein the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period are determined based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells.

[0018] In one embodiment, the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells includes the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle.

[0019] In one embodiment, determination based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle further includes: determination based on the maximum among the DTX cycles of the neighbor cells or the beams of the neighbor cells determined based on the cell identities of the neighbor cells and all SSB indexes within the cells and the UE DRX cycle.

[0020] In one embodiment, the first message is included in a system information block, SIB, wherein receiving the first message from the base station is based on a synchronization raster of cell frequencies, and wherein the synchronization raster is set based on a frequency range and an increased synchronization signal and physical broadcast channel block (or simply synchronization signal block), SSB, period.

[0021] In one embodiment, the method may further include: performing, by the UE, beam failure detection (BFD) measurement of the serving cell in a second time period and reporting the measurement results, and / or performing candidate beam detection (CBD) measurement of the serving cell in a third time period and reporting the measurement results, wherein the second time period or the third time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell.

[0022] In one embodiment, the method may further include: based on the first message, performing, by the UE, radio link detection RLM measurement of the serving cell in a fourth time period or a fifth time period and reporting the measurement results, wherein the fourth time period or the fifth time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0023] According to an aspect of the present disclosure, there is provided a method performed by the UE in a wireless communication system, the method including: receiving a first message from a base station, the first message including N1 DTX configurations including DTX configurations of a serving cell(s) or DTX configurations of beam(s) of the serving cell(s); based on the first message, performing, by the UE, beam failure detection (BFD) measurement of the serving cell in a second time period and reporting the measurement results, and / or performing candidate beam detection (CBD) measurement of the serving cell in a third time period and reporting the measurement results, wherein the second time period or the third time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0024] According to an aspect of the present disclosure, there is provided a method performed by the UE in a wireless communication system, the method including: receiving a first message from a base station, the first message including N1 DTX configurations including DTX configurations of a serving cell(s) or DTX configurations of beam(s) of the serving cell(s); based on the first message, performing, by the UE, Radio Link Detection (RLM) measurement of the serving cell in a fourth time period or a fifth time period and reporting measurement results; wherein the fourth time period or the fifth time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0025] According to an aspect of the present disclosure, there is provided a method performed by the UE in a wireless communication system, the method including: receiving a first message from a base station, the first message including N1 discontinuous transmission, DTX, configurations, the N1 DTX configurations including DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s); based on the first message, measuring, by the UE, the quality of the serving cell at least once in a sixth time period at everysixth time period and evaluating whether the serving cell fulfills the S criteria; if the UE has evaluated that the serving cell does not fulfill the S criteria within the seventh time period, initiating, by the UE, measurement of neighbor cells; wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0026] In one embodiment, the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell includes: the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and the UE DRX cycle.

[0027] In one embodiment, the determination based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and the UE DRX cycle further includes: determination based on the maximum among the cycle(s) in the DTX configuration(s) of the serving cell(s) or the DTX configuration(s) of the beam(s) of the serving cell(s) and the UE DRX cycle.

[0028] In one embodiment, the N1 DTX configurations further include information about DTX configurations of the neighbor cells or beams of neighbor cells. Wherein the method further comprises receiving a list of neighbor cells from a base station, wherein the list of neighbor cells comprises a cell identity of at least one neighbor cell.

[0029] In one embodiment, the measurement of neighbor cells include at least one of: identifying, by the UE, a newly detectable intra-frequency cell or inter-frequency cell from a list of neighbor cells within an eighth time period or a ninth time period; for the identified cell, measuring, by the UE, SS-RSRP and SS-RSRQ of the cell at every tenth time period or an eleventh time period; and for the identified cell, evaluating, by the UE, whether the cell satisfies cell reselection criteria in a twelfth time period or a thirteenth time period, wherein the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period are determined based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells.

[0030] In one embodiment, the DTX configuration of each neighbor cell or beams of the neighbor cell is determined by the cell identity and SSB index of the neighbor cell in the information about the DTX configuration of the neighbor cell or beams of the neighbor cell.

[0031] In one embodiment, the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells includes the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle.

[0032] In one embodiment, determination based on the cycles in the DTX configurations of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle further includes: determination based on the maximum among the DTX cycles of the neighbor cells or the beams of the neighbor cells determined based on the cell identities of the neighbor cells and all SSB indexes within the cell and the UE DRX cycle.

[0033] In one embodiment, the method may further comprise: receiving a second message from the base station, the second message including a list of CSI configurations of neighbor cells, wherein the CSI configurations comprise at least one of the following information of at least one neighbor cell: a cell identity of the neighbor cell, Synchronization Signal Block (SSB) periodicity, and / or Channel State Information Reference Signal (CSI-RS) periodicity and an SSB index and / or a CSI-RS index; based on the first message, performing, by the UE, L1-RSRP measurement of the serving cell in a first time period and reporting the measurement results, wherein the L1-RSRP measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells.

[0034] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on at least one of the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s); UE DRX cycle; SSB resource or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources of the neighbor cells; and time domain locations of the CSI-RS resources of the neighbor cells.

[0035] In one embodiment, the first time period is determined based on at least one of the following: the maximus among cycle(s) in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s), the UE DRX cycle, the SSB resource or CSI-RS resource periodicity of the serving cell(s); the time domain locations of the SSB resources of the neighbor cells; and the time domain locations of the CSI-RS resources of the neighbor cells.

[0036] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and the time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and whether a reference signal (RS) resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in the time domain, wherein the RS resource includes at least one of SSB resources and CSI-RS resources.

[0037] In one embodiment, the first message is included in a system information block, SIB, wherein receiving the first message from the base station is based on a synchronization raster of cell frequencies, and wherein the synchronization raster is set based on a frequency range and an increased synchronization signal / physical broadcast channel block, SSB, period.

[0038] In one embodiment, the method may further include: performing, by the UE, beam failure detection, BFD, measurement of a serving cell in a second time period and reporting the measurement results, and / or performing candidate beam detection, CBD, measurement of the serving cell in a third time period and reporting the measurement results, wherein the BFD measurement and / or the CBD measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the second time period and the third time period are determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells.

[0039] In one embodiment, the method may further include, based on the first message, performing radio link detection, RLM, measurement of a serving cell in a fourth time period or a fifth time period and reporting the measurement results, wherein the RLM measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the fourth time period or the fifth time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells.

[0040] According to one aspect of the present disclosure, a UE is provided, which includes:

[0041] At least one transceiver configured to receive and transmit signals;

[0042] At least one processor coupled with the at least one transceiver and configured to perform a method as described above.

[0043] In accordance with an aspect of the present disclosure, there is provided a base station including at least one transceiver configured to receive and transmit signals; at least one processor coupled with the at least one transceiver and configured to transmit a first message to the UE, the first message including N1 DTX configurations including DTX configurations of a serving cell(s) or DTX configurations of beam(s) of the serving cell(s); transmitting a second message to the UE, the second message including a list of CSI configurations of neighbor cells, wherein the CSI configurations comprise at least one of the following information for at least one neighbor cell: a cell identity of the neighbor cell, Synchronization Signal Block (SSB) periodicity, and / or Channel State Information Reference Signal (CSI-RS) periodicity, and an SSB index and / or a CSI-RS index; and receiving, from the UE, its measurement results based on the first message and the second message, wherein N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0044] According to embodiments of the present disclosure, the UE performs measurements and communication with the base station based on cell or beam based discontinuous reception and / or discontinuous transmission configuration information configured for it by the base station so that time division communication of different beams supported by the base station (e.g., a satellite) can be supported.

[0045] FIGURE 1 illustrates an example wireless network according to various embodiments of the present disclosure;

[0046] FIGURE 2a illustrates example wireless transmit and receive paths according to the present disclosure;

[0047] FIGURE 2b illustrates example wireless transmit and receive paths according to the present disclosure;

[0048] Figure 3a illustrates an example user equipment, UE, according to the present disclosure;

[0049] Figure 3b illustrates an example base station according to the present disclosure;

[0050] Figure 4 illustrates method flow one according to an embodiment of the present disclosure;

[0051] Figure 5 illustrates a method flow two according to an embodiment of the present disclosure;

[0052] FIG. 6 illustrates a block diagram of a UE in a communication system according to the present disclosure; and

[0053] FIG. 7 illustrates a block diagram of a base station in a communication system according to the present disclosure.

[0054] 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.

[0055] Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," as well as derivatives thereof, encompass both direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with," as well as derivatives thereof, means to include, be included within, connect to, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. The term "controller" means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware, or in a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase "at least one of," when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed. For example, "at least one of: A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C. For example, "at least one of: A, B, or C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C.

[0056] Moreover, various functions described below can be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium. The terms "application" and "program" refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code. The phrase "computer readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer readable medium" includes any type of medium capable of being accessed by a computer, such as Read-Only Memory (ROM), Random Access Memory (RAM), a hard disk drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory. A "non-transitory" computer readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals. A non-transitory computer readable medium includes media where data can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

[0057] The terminology used herein to describe embodiments of the disclosure is not intended to limit and / or define the scope of the disclosure. For example, unless otherwise defined, technical terms or scientific terms used in this disclosure shall have their ordinary meanings understood by those of ordinary skill in the art to which this application belongs.

[0058] It should be understood that "first," "second," and similar words used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish between different components. Unless the context clearly indicates otherwise, the singular forms "a," "an," "the," and similar words do not denote a limitation of quantity, but rather denote the presence of at least one.

[0059] As used herein any reference to "one example" or "an example," "one embodiment," or "an embodiment" means that a particular element, feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrases "in one embodiment" or "in an example" in various places in the specification are not necessarily all referring to the same embodiment.

[0060] As used herein, "a portion of something means" at least some of that thing, and thus may mean less than all of that thing or all of that thing. Thus, "a portion of a thing includes the entire thing as a special case, i.e., the entire thing is an example of a portion of the thing.

[0061] It will be further understood that the terms "include" or "include" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, but do not exclude other elements or items. Words such as "connect" or "connect" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to express relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0062] The various embodiments discussed below to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged wireless communication system. For example, although the following detailed description of embodiments of the present disclosure will be directed to LTE and 5G communication systems, those skilled in the art may understand that the main points of the present disclosure may also be slightly modified without substantially departing from the scope of the present disclosure. Can be applied to other communication systems having similar technical backgrounds and channel formats. The technical solutions of the embodiments of this application can be applied to various communication systems. For example, the communication systems can include global system for mobile communications (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) System, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) System, LTE time division duplex (TDD), universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, 5th generation (5th generation, 5G) system or new radio (new radio, NR), etc. In addition, the technical solutions of the embodiments of this application can be applied to future-oriented communication technologies. In addition, the technical solutions of the embodiments of this application can be applied to future-oriented communication technologies.

[0063] 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. This description includes various specific details to assist in that understanding but are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications can be made to the various embodiments described herein 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.

[0064] The terms and phrases used in the following description and claims are not limited to their dictionary 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.

[0065] It is to be understood that the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0066] The terms "include" or "may include" refer to the presence of corresponding disclosed functions, operations, or components that may be used in various embodiments of the present disclosure, and do not limit the presence of one or more additional functions, operations, or features. Furthermore, the terms "include" or "have" may be construed to indicate certain characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof, but should not be construed to exclude one or more other characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0067] The term "or" as used in various embodiments of the present disclosure includes any of the listed terms and all combinations thereof. For example, "A or B" may include A, may include B, or may include both A and B.

[0068] Unless defined differently, all terms (including technical terms or scientific terms) used in this disclosure have the same meaning as understood by those skilled in the art to which this disclosure belongs. Common terms as defined in dictionaries are interpreted to have meanings consistent with the context in the relevant technical field, and should not be interpreted ideally or overly formally unless expressly so defined in this disclosure.

[0069] FIGURES 1 through 6, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.

[0070] 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.

[0071] 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.

[0072] 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).

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.).

[0084] 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.

[0085] 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.

[0086] UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a transmission (TX) processing circuit 303, a microphone 304, and a reception (RX) processing circuit 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.

[0087] 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 circuit 305, where the RX processing circuit 305 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 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).

[0088] The TX processing circuit 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 circuit 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 circuit 303 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 301.

[0089] 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 circuit 305 and the TX processing circuit 303 according to well-known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0090] 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.

[0091] 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).

[0092] 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.

[0093] 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.

[0094] 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 circuit 374, and a reception (RX) processing circuit 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.

[0095] 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 circuit 376, where the RX processing circuit 376 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. RX processing circuit 376 transmits the processed baseband signal to controller / processor 378 for further processing.

[0096] The TX processing circuit 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 circuit 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 circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0097] 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 circuit 376 and the TX processing circuit 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuit 374 and / or RX processing circuit 376) support aggregated communication with FDD cells and TDD cells.

[0102] 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 circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0103] The exemplary embodiments of the present disclosure are further described below in conjunction with the accompanying drawings.

[0104] The text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be interpreted as limiting the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, based on the content disclosed herein, it is obvious to those skilled in the art that modifications to the illustrated embodiments and examples can be made without departing from the scope of the present disclosure.

[0105] With the development of 5G systems and the needs of 6G systems, in order to provide users with better communication services, such as services anywhere at any time, especially in scenarios such as mountains, oceans, deserts and other coverage areas, support for satellite communication is introduced into 5G communication systems due to the advantages of longer communication distance and larger coverage area of the satellite communication. According to the type and orbit altitude of satellites, satellite communication systems can be divided into Geostationary Earth orbit (GEO) satellite systems and Non-Geostationary Satellites (Non-Geostationary Satellites) satellite systems. According to the satellite orbit altitude, non-synchronous orbit satellite system can be divided into Medium Earth Orbit (MEO) satellite system and Low Earth Orbit (LEO) satellite system.

[0106] With the development of satellite communication systems, in order to improve communication efficiency and reduce the cost of satellite networks, a smaller number of satellites are used to cover a wider ground area, that is, the ground coverage area of a single satellite is increased to improve the efficiency of the overall satellite network. In such satellite network deployments, the coverage of a single satellite increases to hundreds or even thousands of satellite beams. How to support communication and measurement between the network and User Equipment (User Equipment, UE) of hundreds or even thousands of beams transmitted by a single satellite is a problem to be solved in the industry.

[0107] According to an embodiment of the present disclosure, the present disclosure proposes a measurement method in a communication system, in which the base station configures beam-based time measurement pattern configuration information for the user equipment UE, for example, information regarding beam-based Discontinuous Transmission (Discontinuous Transmission, DTX) configuration and / or beam-based Discontinuous Reception (Discontinuous Reception, DRX) configuration, and the UE performs measurements and communication with the base station according to the beam-based Discontinuous Transmission (DTX) configuration and / or Discontinuous Reception (DRX) configuration such that time division communication over different beams supported by the base station (e.g., satellite) can be supported. When the number of beams supported by a single satellite is determined, the beam-based DTX configuration and / or the beam-based DRX configuration increases the ground coverage area of a single satellite given that each beam has a certain ground coverage. Therefore, embodiments of the present disclosure can at least support measurement and communication between the network and User Equipment (UE) by more beams transmitted by a single satellite.

[0108] In a satellite communication system, a base station in an embodiment according to the present disclosure may be implemented as a satellite.

[0109] According to one embodiment of the present disclosure, in the communication system, the UE receives a first message sent by the base station in a System Information Block (SystemInformationBlock, SIB) and / or a first message sent in a Radio Resource Control (RRC) message. The first message can be periodic, such as sent in a periodic system information block, or aperiodic, such as sent in an RRC message. The first message may include information about a Discontinuous Transmission (DTX) configuration and / or a Discontinuous Reception (DRX) configuration of a beam(s), where the beam(s) may be one or more. The DTX configuration of each beam may include at least one of: DTX cycle, length in time of a DTX on period, length in time of a DTX off period, and a starting position of a DTX on period. The DRX configuration for each beam may include at least one of DRX cycle, length in time of DRX on period, length in time of DRX off period, and a starting position of DRX on period. During the DTX off period of the beam, the base station does not send downlink signals. During the DRX off period of the beam, the base station does not receive uplink signals. In this way, if a single satellite needs to support Number1 beams throughout the satellite's coverage area, it can only support Number2 beams at the same time or within the same time period, and Number2 is less than or equal to Number1. Since only Number2 beams are sent at the same time or within the same time period, there is no need to send all beam downlink signals or receive all beam uplink signals, thereby achieving the effect of energy saving and power saving of the base station. Through beam-based DRX and / or DTX, a larger number of beams can be supported within the total time period. In the case where each beam has a certain ground coverage, supporting a larger number of beams means an increase in the ground coverage within the total time period, thereby increasing the overall communication efficiency of the cell.

[0110] In another embodiment, when the DTX and / or DRX configurations of all beams of the serving cell are the same, then the DTX and / or DRX configuration of the beam may also be referred to as the DTX and / or DRX configuration of the serving cell. In this case, the beam DTX-related configuration and the beam DRX-related configuration regarding the serving cell described below may also refer to the DTX-related configurations of the serving cell and the DRX-related configuration of the serving cell, and are therefore used interchangeably. When the DTX and / or DRX configurations of all beams of a neighbor cell are the same, then the DTX and / or DRX configurations of the beam may also be referred to as DTX and / or DRX configurations of the neighbor cell, in which case the beam DTX-related configuration and the beam DRX-related configuration regarding to the neighbor cell described below may also refer to the DTX-related configuration and the DRX-related configuration of the neighbor cell, and thus may be used interchangeably.

[0111] In one embodiment, the first message may include N1 DTX configurations, the N1 DTX configurations including DTX configurations of a serving cell(s) or DTX configurations of beam(s) of the serving cell(s); and / or DTX configuration of neighbor cells or beams of neighbor cells. Wherein the DTX configuration of the serving cell or the beams of the serving cell may include the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and the DTX configuration of the neighbor cells or the beams of the neighbor cells may include the cell identity of the neighbor cells and all SSB indexes of the neighbor cells. In one embodiment, the DTX configuration of each neighbor cell or beams of the neighbor cell is determined by the cell identity of the serving cell and / or neighbor cell in N1 DTX configurations and the SSB index and / or CSI-RS index

[0112] The first message may include but is not limited to, at least one of, the following formats:

[0113] 1. The first message includes at least one of N1 Cell identities (Cell IDs), a Cell DTX configuration and / or a Cell DRX configuration corresponding to each cell (at this time, multiple cells share one beam), and wherein each Cell DTX configuration has a Cell DTX cycle, and each Cell DRX configuration has a Cell DRX cycle (Cell DRX cycle).

[0114] 2. The first message includes at least one of N2 beam identities (Beam IDs), a Beam DTX (Beam DTX) configuration and / or a Beam DRX (Beam DRX) configuration corresponding to each beam, and wherein each Beam DTX configuration has a Beam DTX cycle (Beam DTX cycle) and each Beam DRX configuration has a beam DRX cycle (Beam DTX cycle).

[0115] 3. In the case where the satellite configures a total of N5 beam DTX configurations and / or N6 beam DRX configurations for the UE, each beam DTX configuration having a corresponding Beam DTX ID, and each beam DRX configuration having a corresponding Beam DRX ID, the first message includes at least one of: N3 cell identities (Cell IDs), N4 beam identities (Beam IDs) corresponding to each cell, and Beam DTX ID (Beam DTX ID) for each beam and Beam DRX ID (Beam DRX ID) for each beam. At this time, the N5 beam DTX configurations and / or the N6 beam DRX configurations configured by the satellite can be preset in the UE, or can be sent through the first message.

[0116] 4. In the case where the satellite configures a total of N5 beam DTX configurations and / or N6 beam DRX configurations for the UE, each beam DTX is configured with a corresponding Beam DTX ID, and each beam DRX is configured with a corresponding Beam DRX ID, the first message includes at least one of the following: N7 cell identifiers (Cell IDs), and downlink pilot indices, where the downlink pilot indices include at least one of the following: Synchronization Information Block Index (Synchronization Signal Block index, SSB index); and Channel State Information-Reference Signal index (CSI-RS index). Among them, the mapping relationship among the N5 beam DTX configuration sand / or the N6 beam DRX configurations and the above-mentioned downlink pilot indices are preset in the UE, that is, it is known in advance by the UE.

[0117] 5. In the case where the satellite configures a total of N5 beam DTX configurations and / or N6 DRX configurations for the UE, each beam DTX configuration has a corresponding Beam DTX ID (Beam DTX ID), and each beam DRX configuration has a corresponding Beam DRX ID (Beam DRX ID). ID), the first message includes at least one of the following: N8 frequency information (Frequency Info), Beam DTX ID and Beam DRX ID, and downlink pilot indices, where the downlink pilot indices include at least one of the following: Synchronization Signal Block Index (Synchronization Signal Block index, SSB index); Channel-State Information-Reference Signal index (CSI-RS index), the frequency information may include the intra-frequency information and inter- frequency information, wherein the mapping relationships among the above downlink pilot indices and the beam DTX configuration and / or the beam DRX configuration are preset in the UE, that is, it is known in advance by the UE.

[0118] In the embodiment of the present disclosure, the first message can be a SIB or RRC message, which can be multiplexed with an existing message, or can be a new message. In addition, the first message can also add a field(s) to the existing message.

[0119] In addition to the first message, the UE may also receive a second message from the base station, the second message including a list of Channel State Information (CSI) configurations (CSI config) of neighbor cells, wherein the CSI configuration includes at least one of the following information of at least one neighbor cell: a cell identity of the neighbor cell, Synchronization Signal Block (SSB) periodicity, or Channel State Information Reference Signal (CSI-RS) periodicity, and an SSB index or CSI-RS index.

[0120] Furthermore, the above-mentioned beam-based or cell-based DTX configuration information and / or DRX configuration information may be preset in the UE and therefore need not be included in the first message. At this time, the mapping relationships among the indices sent in the first message and the DTX configuration information and / or DRX configuration information needs to be preset in the UE accordingly. Sending the first message in this way can save signaling overhead between the UE and the base station.

[0121] Measurements are divided into measurements in an idle state (RRC_IDLE) or inactive state (RRC_INACTIVE) and measurements in a connected state. "Performing measurement(s)" mentioned in this disclosure may be at least one of the UE performing measurement in the idle state (RRC_IDLE) or inactive state (RRC_INACTIVE) and the UE performing measurement in the connected state.

[0122] In the communication system, when a UE is in the connected state, channel conditions are constantly changing due to the movement of the UE or the movement of network coverage. In order to support mobility management of the UE, the UE shall perform measurement in the connected state. In the present disclosure, the measurement performed by the UE based on the first message in the connected state includes at least one of the following:

[0123] Layer 1 Reference Signal Received Power (L1-RSRP) measurement;

[0124] Beam Failure Detection (BFD) measurement;

[0125] Candidate Beam Detection (CBD) measurement; and

[0126] Radio Link Monitoring (RLM) measurement.

[0127] L1-RSRP measurement is applied so that the UE measures and reports the L1-RSRP quality of the serving cell and / or neighboring cells in the corresponding time window. The base station receives the results of the L1-RSRP measurement and thus the base station is assisted in performing better network scheduling and beam management. Especially when the relative movement between the satellite and the UE is fast, the mobility management of the UE is enhanced. Measurement in the corresponding time window improves the accuracy of the measurement results.

[0128] CBD measurement is applied so that the UE evaluates the beam quality of the serving cell and / or neighboring cells in the corresponding time window and reports the status. The base station receives the report from the UE and the base station is assisted in performing better network scheduling and beam management. Especially when the relative movement between the satellite and the UE is fast, the mobility management of the UE is enhanced. Evaluating in the corresponding time window improves the accuracy of the measurement results.

[0129] RLM / BFD measurement is applied so that the UE monitors / evaluates the beam quality of the serving cell in the corresponding time window and reports the status, assists the base station to perform better network scheduling and beam management, especially when the relative movement between the satellite and the UE is fast, and enhances the mobility management of the UE. Measurement in the corresponding time window improves the accuracy of the measurement results.

[0130] According to an embodiment of the present disclosure, when the UE is configured with the first message by the network or when the UE receives the first message from the base station or satellite, the UE shall be able to configure perform L1-RSRP measurements on the RS resources (including SSB resources or CSI-RS resources or SSB resources and CSI-RS resources). This measurement shall be performed on the serving cell.

[0131] The measurement shall include L1-RSRP measurements on all configured measurement resources (including SSB resources, or CSI-RS resources, or SSB resources and CSI-RS resources). If the measurement resources belong to the serving cell, the measurement is for a certain beam of the serving cell. If the base station configures the third message for the UE, the third message may indicate that the UE can perform paired beam reporting. If the base station does not configure the third message for the UE, the absence of the third message may indicate that the UE cannot perform paired beam reporting.

[0132] For example, in a certain embodiment, when the UE is not configured with the third message, but is configured with the first message, and the measurement resource configuration is a beam which is identified as SSB index and / or CSI-RS index by the serving cell, the UE shall be able to perform L1-RSRP measurement based on the configured SSB resources and / or CSI-RS resources for L1-RSRP computation, and the UE shall report the measurement result R of L1-RSRP over the measurement time TL1-RSRP_Measurement_Period_RS, which may be referred to herein as the first time period. When the UE configures the third message and configures the first message, and the measurement resource configuration is a beam which is identified as a pair of SSB resource sets by the serving cell, the UE shall be able to perform the L1-RSRP measurement based on the configured SSB resource pair for L1-RSRPcomputation. Moreover, the UE shall report the L1-RSRP measurement result R' over the measurement time TL1-RSRP_Measurement_Period_RS.

[0133] TL1-RSRP_Measurement_Period_RSmay be determined by at least one of: UE DRX cycle; the cell DTX cycle; the cell DRX cycle; the beam DTX cycle; the SSB resource and / or CSI-RS resource periodicity; and the beam DRX cycle. For example, the value of TL1-RSRP_Measurement_Period_RScan be as shown in Table 1 below:

[0134] Table 1

[0135]

[0136] The operator in Table 1 can be a function that takes a maximum value or a function that takes a minimum value or a function that takes one of them.

[0137] TDTXin Table 1 may be the DTX cycle of the serving cell or beam DTX cycle of the serving cell. TDRXmay be the UE DRX cycle.

[0138] TReportis the configured reporting period.

[0139] T_RS is the period of the configured downlink pilot, which may specifically be the SSB periodicity of the serving cell or the CSI-RS periodicity of the serving cell.

[0140] M can take different preset values according to the network signaling configurationtimeRestrictionForChannelMeasurement.

[0141] In Table 1, for the scaling factor N in the above evaluation time, when performing L1-RSRP on the satellite cell, for a UE that requires mechanical steering and / or uses a narrow beam in frequency range 1, its scaling factor N during the above evaluation period can be set to 1. For UE types that use, for example, electronically steering phased array antennas, their scaling factor N during the above evaluation period can be taken as follows: N = 8 when the frequency range is FR2-1; and N = 12 when the frequency range is FR2-2.

[0142] Among them, K1 and K20 can be preset values, which can be the same or different, and are not limited here. When RS represents different types of reference signals or TDTXrepresents different types of cycles in the DTX configurations, the corresponding K1 and K20 values can be the same or different, and are not limited here.

[0143] Under this configuration, the UE can perform measurement in the corresponding time window according to the first message configured by the base station to improve the accuracy of the measurement results, thereby assisting the base station in performing better network scheduling and beam management. The mobility management of the UE is enhanced especially when the relative movement between the satellite and the UE is fast.

[0144] As the UE moves and / or the ground coverage of the satellite changes, the UE may respectively perform the above-mentioned L1-RSRP measurements according to the first message configured by the base station to assist the base station in performing subsequent beam mobility management. For example, when the UE reports the current beam quality and / or N other non-current beam qualities configured by the system. When one of the following conditions is met, the base station can change configuration of the beam Transmission Configuration Indication-state (TCI-State) through RRC or Medium Access Control-Control Element (MAC-CE) or Downlink Control Information (DCI):

[0145] -The quality of the current beam is smaller than the first threshold, and / or

[0146] -at least one configured non-current beam quality is greater than a second threshold, and / or

[0147] -The quality of the current beam is smaller than the quality of at least one configured non-current beam.

[0148] As a result, beam scheduling between the base station and the UE can be better supported, allowing the UE to switch to a more suitable beam faster.

[0149] According to another embodiment of the present disclosure, when the UE is configured with the first message by the network or when the UE receives the first message from the base station or satellite, the UE shall be able to perform L1-RSRP measurement on configured RS resources (including SSB resources or CSI-RS resources or SSB resources and CSI-RS resources). This measurement shall be performed on the serving cell and / or on neighbor cells. The UE may also receive a second message from the base station, the second message including a list of Channel State Information configurations of neighbor cells, wherein the CSI configurations comprise at least one of the following information for at least one neighbor cell:

[0150] - Cell ID of the neighbor cell

[0151] - Synchronization Signal Block SSB periodicity

[0152] - Synchronization Signal Block SSB Index

[0153] - of CSI-RS periodicity

[0154] - CSI-RS Index

[0155] The measurement shall include L1-RSRP measurement on all configured measurement resources (including SSB resources, or CSI-RS resources, or SSB resources and CSI-RS resources). If the measurement resource belongs to a list of neighbor cells of the satellite indicated by the system information, the measurement is for a certain beam of the neighbor cell. If the measurement resource belongs to the serving cell, the measurement is for a certain beam of the serving cell. If the base station configures the third message for the UE, the third message may indicate that the UE can perform paired beam reporting. If the base station does not configure the third message for the UE, the absence of the third message may indicate that the UE cannot perform paired beam reporting.

[0156] For example, in a certain embodiment, when the UE is not configured with the third message, but is configured with the first message and / or the second message, and the measurement resource configuration is a beam which is identified as SSB index and / or CSI-RS index by the serving cell, the UE shall be able to perform L1-RSRP measurement based on the configured SSB resources and / or CSI-RS resources for L1-RSRP computation, and the UE shall report the measurement result R of L1-RSRP over the measurement time TL1-RSRP_Measurement_Period_RS, which may be referred to herein as the first time period. The first time period is determined based at least on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells. In one embodiment, the first time period is determined based at least on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and the time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s); the UE DRX cycle; SSB resource or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources of the neighbor cells; and the time domain locations of the CSI-RS resources of the neighbor cells. In one embodiment, the first time period is determined based on at least one of the following: themaximum among the cycle(s) in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s), the UE DRX cycle, the SSB resource or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources of the neighbor cells; and the time domain locations of the CSI-RS resources of the neighbor cells.

[0157] When the UE configures the third message and configures the first message and / or the second message, and the measurement resource configuration is a beam which is identified as a pair of SSB resource sets by the serving cell, the UE shall be able to perform L1-RSRP measurement based on the configured SSB resource pair for L1-RSRP computation, and the UE shall report the L1-RSRP measurement result R' over the measurement time TL1-RSRP_Measurement_Period_RS. In one embodiment, the above L1-RSRP measurement may also be performed based on the first message alone.

[0158] TL1-RSRP_Measurement_Period_RSmay be determined by at least one of: the UE DRX cycle; the cell DTX cycle; the SSB resource and / or CSI-RS resource periodicity; and the cell DRX cycle. For example, the value of TL1-RSRP_Measurement_Period_RScan be as shown in Table 2 below:

[0159] Table 2

[0160]

[0161] The operator in Table 2 can be a function that takes a maximum value or a function that takes a minimum value or a function that takes one of them.

[0162] TDTXin Table 2 may be DTX cycle of a serving cell or beam DTX cycle of the serving cell or DTX cycle or beamDTX cycle of neighbor cells. TDRXmay be the UE DRX cycle. T_RSis the period of the downlink pilot, which may specifically be the SSB periodicity of the neighboring cells or the CSI-RS periodicity of the neighboring cells. The SSB periodicity of the neighboring cells or the CSI-RS periodicity of the neighboring cells may be obtained through the second message.

[0163] TReportis the configured reporting period.

[0164] M can take different preset values according to the network signaling configurationtimeRestrictionForChannelMeasurement.

[0165] In Table 2, for the scaling factor N in the above evaluation time, when performing L1-RSRP measurement of the satellite cell, for a UE that requires mechanical steering and / or uses a narrow beam in frequency range 1, its scaling factor N during the above evaluation period can be set to 1. For UE types that use, for example, electronically steering phased array antennas, their scaling factor N during the above evaluation period can be taken as follows: N = 8 when the frequency range is FR2-1; and N = 12 when the frequency range is FR2-2.

[0166] S' can take values as following rules:

[0167] If any time domain OFDM symbol of the Reference Signal (Reference Signal, RS) of the serving cell and the RS of the neighboring cells (RS can be SSB or CSI-RS) overlap or are adjacent in the time domain, S'= 2; otherwise, S'= 1. The value of S' can be obtained by the UE based on the second message. Specifically, the time domain location of the SSB resource or CSI-RS resource of the neighboring cell is determined based on the list of CSI configurations of the neighboring cell in the second message.

[0168] Among them, K18 and K19 can be preset values, which can be the same or different, and are not limited here. When RS represents different types of reference signals or TDTXrepresents different types of cycles in the DTX configuration, the corresponding K18 and K19 values may be the same or different, and are not limited here.

[0169] In this configuration, the UE can measure the beam quality of the serving cell and neighboring cells in the corresponding time window according to the first message and / or the second message configured by the base station, especially when the UE is at the edge of the serving cell, to improve the accuracy of the measurement results, thereby assisting the base station in performing better network scheduling and beam management. The mobility management of the UE is enhanced especially when the relative movement between the satellite and the UE is fast.

[0170] As the UE moves and / or the ground coverage of the satellite changes, the UE may perform the above-mentioned L1-RSRP measurement according to the first message and / or the second message configured by the base station to assist the base station in performing subsequent beam mobility management. For example, when the UE reports the current beam quality and / or N other non-current beam qualities configured by the system, when one of the following conditions is met, the base station can change configuration of the beam Transmission Configuration Indication-state (TCI-State) through RRC or MAC-CE (Medium Access Control-Control Element) or DCI (Downlink Control Information):

[0171] - The quality of the current beam is smaller than the first threshold, and / or

[0172] - At least one configured non-current beam quality (the beam may belong to the serving cell or neighbor cell) is greater than a second threshold, and / or

[0173] - The quality of the current located beam is smaller than the quality of at least one configured non-current beam (the beam may belong to the serving cell or neighbor cell).

[0174] As a result, beam scheduling between the base station and the UE can be better supported, allowing the UE to switch to a more suitable beam faster.

[0175] According to an embodiment of the present disclosure, when the UE receives the first message, the UE shall simultaneously perform Beam failure detection (BFD for short) and candidate beam detection (CBD for short) on multiple configured beams.

[0176] The UE shall assess the downlink radio link quality of the serving cell based on the reference signals in the specified set to detect beam failure. The RS resource configuration in the set may be periodic CSI-RS resources and / or SSBs. On each RS resource configuration in the set , the UE shall be able to evaluate the radio link quality and compare it with a threshold Qout_LRin order to monitor the downlink radio link quality of the serving cell beam.

[0177] The threshold Qout_LRis defined as a level of downlink radio link quality at which a given resource configuration cannot be reliably received, and should correspond to the case assuming Block Error Rate (BLER) BLERout= 10% for PDCCH transmission.

[0178] According to the request, the UE shall send the result to the higher layer according to the configuration index in the set and the comparison result of the corresponding Layer 1 Reference Signal Received Power (L1-RSRP) measurement, provided that the measured L1-RSRP is equal to or better than the threshold Qin_LR, where Qin_LRis configured by higher layer parameters.

[0179] According to one embodiment of the present disclosure, for Beam failure detection (BFD) based on RS resources, the UE shall be able to evaluate whether the downlink radio link quality on the RS resources configured in the set estimated over the last period of TEvaluate_BFD_RSmillisecond becomes worse than the threshold Qout_LR_RSwithin the TEvaluate_BFD_ RSmillisecond period. Among them, Qout_LR_RSis the Qout_LRwhen beam failure detection is performed based on RS resources. TEvaluate_BFD_ RSmay be referred to herein as a second time period.

[0180] The RS resource(s) can be SSB, or Channel-State Information Reference Signal (CSI-RS for short), or a combination of SSB and CSI-RS.

[0181] After receiving the first message, the above evaluation time period TEvaluate_BFD_ RSmay be determined based on at least one of: the UE DRX cycle; the cell DTX cycle; the SSB resource and / or CSI-RS resource periodicity; and the beam DTX cycle. For example, the value of TEvaluate_ BFD_RScan be as shown in Table 3 below:

[0182] Table 3

[0183]

[0184] The operator in Table 3 can be the function max () taking the maximum value or the function min () taking the minimum value or a function taking one of them. P in Table 3 can have the same physical meaning as in the prior art.

[0185] TDTXin Table 3 may be DTX cycle of the serving cell or beam DTX cycle of the serving cell, and TDRXmay be the UE DRX cycle.

[0186] T_ RSis the period of the configured downlink pilot, which may be the SSB periodicity or the CSI-RS periodicity of the serving cell.

[0187] In Table 3, for the scaling factor N in the above evaluation time, when performing BFD on the satellite cell, for a UE that requires mechanical steering and / or uses narrow beams in frequency range 1, its scaling factor N during the above evaluation period can be set to 1. For UE types using, for example, electronically steering phased array antennas, their scaling factor N during the above evaluation period can be taken as follows: N = 8 when the frequency range is FR2-1; and N = 12 when the frequency range is FR2-2.

[0188] Among them, K13, K14, and K15 are preset values, which can be the same or different, and are not limited here. When RS represents different types of reference signals or TDTX represents different types of DTX configuration cycles, the corresponding K13, K14, and K15 values can be the same or different, and are not limited here.

[0189] According to one embodiment of the present disclosure, for candidate beam detection (CBD) based on RS, the UE shall be able to evaluate whether the L1-RSRP measured on the RS resources configured in the set estimated over the last period of TEvaluate _ CBD _ RSmillisecond becomes better than the threshold Qin _ LRwithin the most recent period of TEvaluate _ CBD _ RSmillisecond in response to the request. The RS resource can be SSB, or Channel-State Information Reference Signal (CSI-RS for short), or a combination of SSB and CSI-RS. TEvaluate_CBD_RSmay be referred to herein as a third time period.

[0190] When the UE is configured to perform candidate beam detection of neighbor cells, the UE shall be able to evaluate whether the L1-RSRP measured on the RS resources configured in the set estimated over the last TEvaluate_CBD_RS2ms period became better than the threshold Qin_LR2within the most recent period of TEvaluate _CBD_RS2ms. The RS resources can be SSB resources, or Channel-State Information Reference Signal (CSI-RS for short) resources, or a combination of SSB resources and CSI-RS resources.

[0191] After receiving the first message, the above evaluation time period of TEvaluate CBD RScan be determined by at least one of: the UE DRX cycle; the cell DTX cycle; the SSB resource and / or CSI-RS resource periodicity; and the cell DRX cycle. For example, the value of the time period TEvalue _CBD_RScan be as shown in Table 4 below:

[0192] Table 4

[0193]

[0194] The operator in Table 4 can be a function that takes a maximum value or a function that takes a minimum value or a function that takes one of them.

[0195] TDTXin Table 4 may be the DTX cycle of the serving cell or beam DTX cycle of the serving cell or DTX cycle or beam DTX cycle of a neighbor cell(s). TDTXmay be the UE DRX cycle.

[0196] T_RSis the period of the configured downlink pilot, which may be the SSB periodicity or the CSI-RS periodicity of the serving cell and / or neighboring cells.

[0197] In Table 4, for the scaling factor N in the above evaluation time, when performing CBD on the satellite cell, for UEs that require mechanical steering and / or use narrow beams in frequency range 1, their scaling factor N during the above evaluation period Can be set to 1. For UE types using, for example, electronically steering phased array antennas, their scaling factor N during the above evaluation period can be taken as follows: N = 8 when the frequency range is FR2-1; and N = 12 when the frequency range is FR2-2.

[0198] The value of S in Table 4 is as follows: if any time domain OFDM symbols of the RS of the serving cell and the RS of the neighboring cells (the RS can be SSB or CSI-RS) overlap or are adjacent in the time domain, S = 2; otherwise, S = 1. The value of S' can be obtained by the UE based on the second message.

[0199] In Table 3, K16 and K17 are preset values, which can be the same or different, and are not limited here. When RS represents different types of reference signals or TDTXrepresents different types of DTX configuration cycles, the corresponding K16 and K17 values can be the same or different, and are not limited here.

[0200] According to an embodiment of the present disclosure, the UE may monitor the downlink radio link quality based on a reference signal configured as a reference signal for RLM (RLM-RS) resources in order to detect the downlink Radio link quality of the current serving cell. The configured RLM-RS resources can be all SSB resources, or all Channel-State Information Reference Signal (CSI-RS for short) resources, or a combination of SSB resources and CSI-RS resources. The UE does not need to perform RLM outside the activated Downlink bandwidth part (DL BWP).

[0201] On each RLM-RS resource, the UE shall be able to evaluate the downlink radio link quality and compare it with the thresholds Qoutand Qinto monitor the downlink radio link quality of the cell. The threshold Qoutis defined as the level at which the downlink radio link cannot be reliably received, and the threshold Qinis defined as the level at which the downlink radio link quality can be received with significantly higher reliability than at Qout.

[0202] According to one embodiment of the present disclosure, for radio link monitoring, RLM, based on RS, which may be SSB, CSI-RS or a combination of SSB and CSI-RS, the UE shall be able to evaluate whether the downlink radio link quality on the configured RLM-RS resources estimated over the last TEvaluate_out_RSmillisecond period becomes worse than the threshold Qout_RSwithin the period of TEvaluate_out_RSmillisecond. TEvaluate_out_RSmay be referred to herein as a fourth time period.

[0203] The UE shall be able to evaluate whether the downlink radio link quality on the configured RLM-RS resources estimated over the last TEvaluate_in_RSmillisecond period became better than the threshold Qin_RSwithin the period of TEvaluate_in_RSmillisecond. TEvaluate_in_RSmay be referred to herein as a fifth time period.

[0204] Among them, Qout_RSand Qin_RSare Qoutand Qinrespectively when performing radio link monitoring based on RS, and their values are determined by at least one of the following: the UE DRX cycle; the cell DTX cycle; and the beam DTX cycle. Qout_CSI-RSand Qin_CSI-RSare Qoutand Qinrespectively when performing radio link monitoring based on CSI-RS, and their values are determined by at least one of the following: the UE DRX cycle; the cell DTX cycle; the beam DTX cycle; and the SSB resource and / or CSI-RS resource periodicity.

[0205] After receiving the first message, the above evaluation times (which may also be referred to herein as evaluation periods) TEvaluate_out_RSand TEvaluate_in_RSare defined as shown in Table 5 below.

[0206] Table 5

[0207]

[0208] The operator in Table 5 can be a function max () that takes the maximum value or a function min () that takes the minimum value or a function that takes one of them.

[0209] TDTXin Table 5 may be the DTX cycle of the serving cell or beam DTX cycle of the serving cell, and TDRXmay be the UE DRX cycle.

[0210] T_ RSis the period of the configured downlink pilot, which may be the SSB periodicity or the CSI-RS periodicity of the serving cell.

[0211] In Table 5, for the scaling factor N in the above evaluation time, when performing RLM on a satellite cell, for a UE that requires mechanical steering and / or uses a narrow beam in frequency range 1, its scaling factor N during the above evaluation period may be set to 1. For UE types using, for example, electronically steering phased array antennas, their scaling factor N during the above evaluation period can be taken as follows: N = 8 when the frequency range is FR2-1; and N = 12 when the frequency range is FR2-2.

[0212] K8, K9, K10, K11, and K12 in Table 5 are preset values, which can be the same or different, and are not limited here. When RS represents different types of reference signals or TDTX represents different types of DTX configuration cycles, the corresponding K8, K9, K10, K11, and K12 values can be the same or different, and are not limited here.

[0213] Enhanced CBD measurements are applied so that the UE evaluates the beam quality of the serving cell and / or neighboring cells in the corresponding time window and reports the status. The base station receives the report from the UE and assists the base station in performing better network scheduling and beam management. Especially when the relative movement between the satellite and the UE is fast, the mobility management of the UE is enhanced. Evaluating in the corresponding time window improves the accuracy of the measurement results.

[0214] Enhanced RLM / BFD measurements are applied so that the UE monitors / evaluates the beam quality of the serving cell in the corresponding time window and reports the status, assists the base station in performing better network scheduling and beam management. Especially when the relative movement between the satellite and the UE is fast, the mobility management of the UE is enhanced. Measurement in the corresponding time window improves the accuracy of the measurement results.

[0215] According to an embodiment of the present disclosure, when the UE is in the idle state (RRC _ IDLE) or inactive state (RRC _ INACTIVE), it can reselect the cell through the cell reselection process and camp on a more suitable cell.

[0216] The specific process is as follows:

[0217] When the UE camps in the current cell and receives the first message sent by the base station as mentioned above, the UE shall measure Synchronization Signal-Reference Signal Received Power (SS-RSRP) and Synchronization Signal-Reference Signal Received Power (SS-RSRQ) of the serving cell at least once within the sixth time period and evaluate whether the serving cell fulfills the S criteria.

[0218] The sixth time period is represented by the following formula: M1 * N1 first periods. The first period can be one of the following: the Cell DTX cycle; the Beam DTX cycle; max (Cell DTX cycle, UE DRX cycle); max (Beam DTX cycle, UE DRX cycle). Wherein the UE DRX cycle is the DRX cycle configured by the base station for a single UE, and wherein the value of M1 is related to at least one of the following: synchronization signal / physical broadcast channel block measurement timing configuration (SS / PBCH block measurement timing configuration, SMTC); the UE DRX cycle; the Cell DTX cycle; the Beam DTX cycle; and the number of SMTCs configured. The value of N1 is related to the user power classification. The Cell DTX cycle and Beam DTX cycle here may be cycle in the DTX configuration of the serving cell and the beams of the serving cell.

[0219] If the UE has evaluated that the serving cell does not fulfill the S criteria within the seventh time period, the UE shall initiate measurement of neighbor cells without considering the measurement rules that currently limit the UE. Measurement of the neighboring cells include intra-frequency measurement and inter-frequency measurement. The seventh time period may be expressed by one of the following formulas: M1 * N1 * N2 * Cell DTX cycle; M1 * N1 * N2 * Beam DTX cycle, M1 * N1 * N2 * max (Cell DTX cycle, UE DRX cycle); and M1 * N1 * N2 * max (Beam DTX cycle, UE DRX cycle). Wherein the value of M1 is related to at least one of the following: the synchronization signal / physical broadcast channel block measurement timing configuration (SS / PBCH block measurement timing configuration, SMTC); the UE DRX cycle; the Cell DTX cycle; and the Beam DTX cycle. The Cell DTX cycle and Beam DTX cycle here may be cycle in the DTX configuration of the serving cell and the beams of the serving cell. The value of N1 is related to the user power classification. N2 is a preset value. In addition, if the UE is configured with a cell out-of-service time, the UE shall start neighbor measurement before the cell out-of-service time configured by the serving cell. If the UE is configured with the first distance and the first reference location information, the UE shall start measurement of neighbor cells when the distance between the UE and the first reference location information of the serving cell is greater than the first distance. The first reference position information can be a fixed position or mobile position information with time information.

[0220] The UE receives periodic information (which may be a system information block) sent by the base station before the first time T1, and the periodic information includes periodic information of traditional technology and the above-mentioned first message. The UE shall be able to identify several new intra-frequency or inter-frequency cells based on the first message and perform SS-RSRP and SS-RSRQ measurements on the identified cells.

[0221] If the UE does not support enhanced fast measurements, the UE shall be able to identify a newly detectable intra / inter-frequency cell within an eighth time period. If the UE supports enhanced fast measurements, the UE shall be able to identify a newly detectable intra / inter-frequency cell within a ninth time period.

[0222] The eighth time period is determined by Kmulti_SMTC* Tdetect, NR1. Tdetect, NR1can be expressed as conventional detection time of the intra-frequency cell or inter-frequency cell.

[0223] The ninth time period is determined by Kmulti_SMTC* Tdetect, NR2. Tdetect, NR2can be expressed as the fast detection time of intra-frequency cells or inter-frequency cells.

[0224] If the UE does not support enhanced fast measurement, the UE shall be able to measure SS-RSRP and SS-RSRQ on the cell at every tenth time period. If the UE supports enhanced fast measurement, the UE shall be able to measure SS-RSRP and SS-RSRQ on the cell at every eleventh time period.

[0225] The tenth time period is determined by Kmulti _SMTC* Tmeasure, NR1. Tmeasure, NR1can be expressed as the conventional measurement time of the intra-frequency cell or inter-frequency cell.

[0226] The eleventh time period is determined by Kmulti _SMTC* Tmeasure, NR2. Tmeasure, NR2can be expressed as the fast measurement time of the intra-frequency cell or inter-frequency cell.

[0227] For the identified cell, if the UE does not support enhanced fast measurements, the UE shall be able to evaluate whether the cell fulfills the cell reselection criteria within a twelfth time period. If the UE supports enhanced fast measurements, the UE shall be able to evaluate whether the identified cell fulfills the cell reselection criteria within the thirteenth time period.

[0228] The twelfth time period is determined by Kmulti_SMTC* Tevaluate, NR1. Tevaluate, NR1can be expressed as conventional evaluation time of the intra-frequency cell or inter-frequency cell.

[0229] The thirteenth time period is determined by Kmulti_SMTC* Tevaiuate, NR2. Tvaluate, NR2can be expressed as fast evaluation time of the intra-frequency cell or inter-frequency cell.

[0230] The values of the above Tdetect, NR1, Tdetect, NR2, Tmeasure, NR1, Tmeasure, NR2, Tvaluate, NR1, Tvaluate, NR2are determined by at least one of the UE DRX cycle, the cell DTX cycle, and the beam DTX cycle. A set of specific embodiments is given below, but it should be noted that the following embodiments are only examples and not limitations.

[0231] Kmulti_SMTCindicates that the number of SMTCs that can be measured simultaneously is supported. For example:

[0232] If SMTCs do not overlap,

[0233] If the base station is GEO, Kmulti_SMTC= 1;

[0234] If the base station is LEO, Kmulti_SMTC= , i.e., the number of LEOs divided by the number of satellites that can be measured simultaneously within one SMTC.

[0235] If SMTCs partial overlap,

[0236] If the base station is GEO, Kmulti_SMTC= the number of overlapping SMTCs;

[0237] If the base station is LEO, Kmulti _SMTC= .

[0238] Tdetect, NR1= K2 * N1 * M2 * operator (UE DRX cycle, Cell DTX cycle), or Tdetect, NR1= K2 * N1 * M2 * operator (UE DRX cycle, beam DTX cycle).

[0239] Tdetect, NR2= K3 * N1 * M2 * operator (UE DRX cycle, Cell DTX cycle), or Tdetect, NR2= K3 * N1 * M2 * operator (UE DRX cycle, beam DTX cycle).

[0240] Tmeasure, NR1= K4 * N1 * M2 * operator (UE DRX cycle, Cell DTX cycle), or Tmeasure, NR1= K4 * N1 * M2 * operator (UE DRX cycle, beam DTX cycle).

[0241] Tmeasure, NR2= K5 * N1 * M2 * operator (UE DRX cycle, Cell DTX cycle), or Tmeasure, NR2= K5 * N1 * M2 * operator (UE DRX cycle, beam DTX cycle).

[0242] Tevaluate, NR1= K6 * N1 * M2 * operator (UE DRX cycle, Cell DTX cycle), or Tevaluate, NR1= K6 * N1 * M2 * operator (UE DRX cycle, beam DTX cycle).

[0243] Tevaluate, NR2= K7 * N1 * M2 * operator (UE DRX cycle, Cell DTX cycle), or Tevaluate, NR2= K7 * N1 * M2 * operator (UE DRX cycle, beam DTX cycle).

[0244] Among them, K2, K3, K4, K5, K6, and K7 are preset values, which can be the same or different, and are not limited here. The above-mentioned operator can be a function max () that takes the maximum value or a function min () that takes the minimum value or a function that takes one of them. The above-mentioned Cell DTX cycle and beam DTX cycle may be cycles in the DTX configurations of the neighboring cells and the beams of the neighboring cells. Wherein the DTX configuration of each neighbor cell or beams of the neighbor cell is determined by the cell identity and SSB index of the neighbor cell in the information about the DTX configuration of the neighbor cell or beams of the neighbor cell. The DTX configuration of the neighbor cell or the beams of the neighbor cell may be included in the first message.

[0245] An example of when Operator is the function that takes the maximum value is given below.

[0246] In Embodiment 1, the base station configures the UE with the UE DRX configuration (including the UE DRX cycle) and the cell DTX configuration (including the cell DTX cycle). For each value of min (UE DRX cycle, cell DTX cycle), that is, for the smaller time period of the UE DRX cycle and the cell DTX cycle, the values of Tdetect, NR1, Tdetect, NR2, Tmeasure, NR1, Tmeasure, NR2, Tvaluate, NR1, Tvaluate, NR2can be as follows:

[0247] Tdetect, NR1= K2 * N1 * M2 * max (UE DRX cycle, Cell DTX cycle).

[0248] Tdetect, NR2= K3 * N1 * M2 * max (UE DRX cycle, Cell DTX cycle).

[0249] Tmeasure, NR1= K4 * N1 * M2 * max (UE DRX cycle, Cell DTX cycle).

[0250] Tmeasure, NR2= K5 * N1 * M2 * max (UE DRX cycle, Cell DTX cycle).

[0251] Tevaluate, NR1= K6 * N1 * M2 * max (UE DRX cycle, Cell DTX cycle).

[0252] Tevaluate, NR2= K7 * N1 * M2 * max (UE DRX cycle, Cell DTX cycle).

[0253] In Embodiment 2, the base station configures the UE with the UE DRX configuration (which includes the UE DRX cycle) and the beam DTX configuration at each frequency (which includes the Beam DTX cycle, and is also marked as the Beam DTX cycle in this disclosure).

[0254] At this time, for each value of min (UE DRX cycle, Beam DTX cycle), that is, for the time period of the smaller one of the UE DRX cycle and the Beam DTX cycle, Tdetect, NR1, Tdetect, NR2, Tmeasure, NR1, Tmeasure, NR2, Tvaluate, NR1, Tvaluate, NR2can be as follows:

[0255] Tdetect, NR1= K2 * N1 * M2 * max (UE DRX cycle, Beam DTX cycle).

[0256] Tdetect, NR2= K3 * N1 * M2 * max (UE DRX cycle, Beam DTX cycle).

[0257] Tmeasure, NR1= K4 * N1 * M2 * max (UE DRX cycle, Beam DTX cycle).

[0258] Tmeasure, NR2= K5 * N1 * M2 * max (UE DRX cycle, Beam DTX cycle).

[0259] Tevaluate, NR1= K6 * N1 * M2 * max (UE DRX cycle, Beam DTX cycle).

[0260] Tevaluate, NR2= K7 * N1 * M2 * max (UE DRX cycle, Beam DTX cycle).

[0261] Among them, K2, K3, K4, K5, K6, and K7 are preset values, which can be the same or different, and are not limited here.

[0262] M2 is a value based on the SMTC period. In some embodiments, when the SMTC period is greater than the preset value, M2 = 1.5 or 2; otherwise, it is 1. In another embodiment, M2 = 1.5 or 2 when the SMTC period is greater than the maximum among all cells; otherwise, it is 1.

[0263] According to an embodiment of the present disclosure, in order to increase the number of coverage beams of a single satellite, optionally, the SSB (Synchronization Signal / physical broadcast channel block) periodicity can also be increased. The SSB periodicity can be increased up to 320ms or 640ms. Since the complexity of initial timing synchronization is related to the search time window, a longer length of the search time window will increase the complexity of the initial timing synchronization of the UE. After the UE is turned on, the UE performs cell search according to the Synchronization Raster of the cell frequency, and then adjusts to a specific frequency based on the search results. The synchronization raster indicates the frequency location where synchronization blocks may appear in the frequency domain. Based on this information, the UE obtains system information and confirms whether the synchronization signal block SSB exists. The synchronization raster may be determined by the frequency band and the SSB period. For example:

[0264] In the frequency band 0 ~ 3GHz, when the SSB periodicity is less than or equal to 160ms, the SSB frequency domain position is N * 1200kHz + M * 50 kHz, N is a positive integer, whose value range is 1 to 1: 2499, M∈{1, 3, 5}

[0265] In the frequency band 0 ~ 3GHz, when the SSB periodicity is greater than 160ms, the SSB frequency domain position is K * N * 1200kHz + M * 50 kHz, N is a positive integer, whose value range is 1 to 1: 2499, M∈{1, 3, 5}, K is a preset value greater than 1.

[0266] When the SSB periodicity becomes larger, K is introduced to reduce the complexity of the UE's initial access to achieve the effect of energy saving and power saving of the UE.

[0267] Figure 4 shows a method flow according to an embodiment of the present disclosure.

[0268] In FIG. 4, in step S410, the UE 100 receives the first message from the base station 200, wherein the first message includes N1 DTX configurations, and the N1 DTX configurations include DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s).

[0269] In step S420, the UE 100 receives the second message from the base station 200, the second message including a list of CSI configurations of neighbor cells, wherein the CSI configuration includes at least one of the following information of at least one neighbor cell: the cell identity of the neighbor cell, the Synchronization Signal Block (SSB) periodicity, and / or Channel State Information Reference Signal (CSI-RS) periodicity, and the SSB index and / or CSI-RS index.

[0270] In step S430, based on the first message and / or the second message, the UE 100 performs L1-RSRP measurement of the serving cell within the first time period and reports the measurement results. Wherein the L1-RSRP measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the first time period is based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s); and / or the time domain locations of the SSB resources or CSI-RS resources of the neighboring cell are determined based on the list of CSI configurations of the neighboring cells, N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0271] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s); the UE DRX cycle; the SSB resource periodicity or CSI-RS resource periodicity of the serving cell;; time domain locations of the SSB resources of the neighbor cells; and time domain locations of the CSI-RS resources of the neighbor cells.

[0272] In one embodiment, the first time period is determined based on at least one of the following: the maximum among the cycle(s) in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s), the UE DRX cycle, the SSB resource or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources of the neighbor cells; and the time domain locations of the CSI-RS resources of the neighbor cells.

[0273] In one embodiment, the N1 DTX configurations further include information about DTX configurations of the neighbor cells or beams of neighbor cells, and the DTX configuration of each neighbor cell or beams of the neighbor cell is determined by the cell identity of the serving cell and / or neighbor cell and the SSB index and / or CSI-RS index in the N1 DTX configurations.

[0274] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and whether a reference signal (RS) resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in the time domain, wherein the RS resource includes at least one of SSB resources and CSI-RS resources.

[0275] In one embodiment, the method further includes: based on the first message, measuring, by the UE, the quality of the serving cell at least once in a sixth time period at every sixth time period and evaluating whether the serving cell fulfills the S criteria; if the UE evaluates that the serving cell does not fulfill the S criteria within the seventh time period, initiating, by the UE, measurement of neighbor cells; wherein the sixth time period or a seventh time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s).

[0276] In one embodiment, the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell includes the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and the UE DRX cycle.

[0277] In one embodiment, determination based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and the UE DRX cycle further includes:

[0278] Determination based on the maximum among the UE DRX cycle and the cycle(s) in the DTX configurations of the serving cell(s) or the DTX configurations of beams of the serving cell(s).

[0279] In one embodiment, the method further includes receiving a list of neighbor cells from a base station, wherein the list of neighbor cells includes a cell identification of at least one neighbor cell. Wherein the measurement of neighbor cells include at least one of: identifying, by the UE, a newly detectable intra-frequency cell or inter-frequency cell from a list of neighbor cells within an eighth time period or a ninth time period; for the identified cell, measuring, by the UE, SS-RSRP and SS-RSRQ of the cell at every tenth time period or eleventh time period; and for the identified cell, evaluating, by the UE, whether the cell satisfies cell reselection criteria in a twelfth time period or a thirteenth time period, wherein the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period are determined based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells.

[0280] In one embodiment, the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells includes determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle.

[0281] In one embodiment, determination based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle further includes:

[0282] Determination based on the maximum among the DTX cycles of the neighbor cells or the DTX cycles of the beams of the neighbor cells determined based on the cell identity of the neighbor cell and all SSB indexes within the cell and the UE DRX cycle.

[0283] In one embodiment, the first message is included in a system information block, SIB, wherein receiving the first message from the base station is based on a synchronization raster of cell frequencies, and wherein the synchronization raster is set based on a frequency range and an increased synchronization signal / physical broadcast channel block, SSB, period.

[0284] In one embodiment, the method further comprises performing, by the UE, beam failure detection, BFD, measurement of a serving cell in a second time period and reporting the measurement results, and / or performing candidate beam detection, CBD, measurement of the serving cell in a third time period and reporting the measurement results, wherein the BFD measurement and / or the CBD measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the second time period and the third time period are determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells.

[0285] In one embodiment, the method further includes: based on the first message, performing, by the UE 100, radio link detection, RLM, measurement of the serving cell in a fourth time period or a fifth time period and reporting the measurement results, wherein the RLM measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the fourth time period or the fifth time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells.

[0286] Figure 5 shows a method flow two according to an embodiment of the present disclosure.

[0287] In step 510, the UE 100 receives a first message from the base station 200, the first message including N1 discontinuous transmission, DTX, configurations, the N1 DTX configurations including DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s).

[0288] In step 520, based on the first message, the UE measures, quality of the serving cell at least once within the sixth time period at every sixth time period and evaluates whether the serving cell fulfillss the S criteria; if the UE has evaluated that the serving cell does not fulfill the S criteria within the seventh time period, the UE initiates measurement of neighbor cells.

[0289] Wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is a natural number less than or equal to the total number of beams supported by the base station. Wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell includes: the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and UE Discontinuous Reception, DRX, cycle.

[0290] In one embodiment, determination based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and the UE DRX cycle further includes:

[0291] Determination based on the maximum among the cycle(s) in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and the UE DRX cycle.

[0292] In one embodiment, the N1 DTX configurations further comprise information about DTX configurations of the neighbor cells or beams of the neighbor cells,

[0293] In one embodiment, the method further includes receiving a list of neighbor cells from a base station, wherein the list of neighbor cells includes a cell identification of at least one neighbor cell. Wherein the measurement of neighbor cells include at least one of: identifying, by the UE, a newly detectable intra-frequency cell or inter-frequency cell from a list of neighbor cells within an eighth time period or a ninth time period; for the identified cell, measuring, by the UE, SS-RSRP and SS-RSRQ of the cell at every tenth time period or eleventh time period; and for the identified cell, evaluating, by the UE, whether the cell satisfies cell reselection criteria in a twelfth time period or a thirteenth time period, wherein the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period are determined based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells.

[0294] In one embodiment, the DTX configuration of each neighbor cell or beams of the neighbor cell is determined by the cell identity and SSB index of the neighbor cell in the information about the DTX configuration of the neighbor cell or beams of the neighbor cell.

[0295] In one embodiment, the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells includes the determination of the eighth time period, the ninth time period, the tenth time period, the eleventh time period, the twelfth time period and the thirteenth time period based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle.

[0296] In one embodiment, determination based on the cycles in the DTX configuration of the neighbor cells or the beams of the neighbor cells and the UE DRX cycle further includes:

[0297] Determination based on the maximum among the DTX cycles of the neighbor cells or the DTX cycles of the beams of the neighbor cells determined based on the cell identities of the neighbor cells and all SSB indexes within the cell and the UE DRX cycle.

[0298] In one embodiment, the method further includes: receiving a second message from the base station, the second message including a list of CSI configurations of neighbor cells, wherein the CSI configurations comprise at least one of the following information of at least one neighbor cell: a cell identity of the neighbor cell, Synchronization Signal Block (SSB) periodicity, and / or Channel State Information Reference Signal (CSI-RS) periodicity, and an SSB index and / or a CSI-RS index; based on the first message, performing, by the UE, L1-RSRP measurement of the serving cell in a first time period and reporting the measurement results, wherein the L1-RSRP measurement is based on at least one of SSB resources and CSI-RS resources, and wherein the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells determined based on the list of CSI configurations of the neighbor cells.

[0299] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on at least one of: cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s); UE DRX cycle; SSB resource or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources of the neighbor cells; and time domain locations of the CSI-RS resources of the neighbor cells.

[0300] In one embodiment, the first time period is determined based on at least one of the following: the maximum among the cycle(s) in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s), the UE DRX cycle, the SSB resource or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources of the neighbor cells; and the time domain locations of the CSI-RS resources of the neighbor cells.

[0301] In one embodiment, the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and time domain locations of SSB resources or CSI-RS resources of neighbor cells includes: the first time period is determined based on the cycle in the DTX configurations of the serving cell(s) or the DTX configurations of beam(s) of the serving cell(s) and whether a reference signal (RS) resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in the time domain, wherein the RS resource includes at least one of SSB resources and CSI-RS resources.

[0302] In one embodiment, the first message is included in a system information block, SIB, wherein receiving the first message from the base station is based on a synchronization raster of cell frequencies, and wherein the synchronization raster is set based on a frequency range and an increased synchronization signal / physical broadcast channel block, SSB, period.

[0303] In yet another embodiment, the method further includes: performing, by the UE, beam failure detection BFD measurement of the serving cell in a second time period and reporting the measurement results, and / or performing candidate beam detection CBD measurement of the serving cell in a third time period and reporting the measurement results, wherein the second time period or the third time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is less than or equal to the total number of beams supported by the base station natural number.

[0304] In yet another embodiment, the method further includes: based on the first message, performing, by the UE, radio link detection RLM measurement of the serving cell in a fourth time period or a fifth time period and reporting the measurement results, wherein the fourth time period or the fifth time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell, and N1 is a natural number less than or equal to the total number of beams supported by the base station.

[0305] FIG. 6 is a block diagram of a user equipment, UE, according to an embodiment of the present disclosure.

[0306] Referring to FIG. 6, a UE according to an embodiment of the present disclosure includes a transceiver 610 and a processor 620 coupled with the transceiver 610 and configured to perform methods as described in various embodiments of the present disclosure or combinations thereof. Optionally, the UE may also include a memory 630 on which a computer program is stored. The transceiver 610, the processor 620, and the memory 630 are configured to perform the operations of the methods and / or embodiments of various embodiments of the present disclosure or combinations thereof. Although the transceiver 610, the processor 620 and the memory 630 are shown as separate entities, they may be implemented as a single entity, such as a single chip. The transceiver 610, the processor 620, and the memory 630 may be electrically connected or coupled to each other. Transceiver 610 may transmit signals to and receive signals from UEs. Processor 620 may include one or more processing units, and may control the transceiver and / or memory to perform operations and / or functions according to one of the above embodiments. The memory 630 may store instructions or computer programs for implementing the operations and / or functions of one of the above-described embodiments. The instructions or computer programs, when executed by a processor, may cause the processor to perform the methods and / or operations and / or functions of various embodiments of the present disclosure or combinations thereof.

[0307] FIG. 7 is a block diagram of a base station in a communication system according to the present disclosure.

[0308] A base station according to an embodiment of the present disclosure may be implemented as a satellite in a satellite communication system. Referring to FIG. 7, a base station according to an embodiment of the present disclosure includes a transceiver 710 and a processor 720 coupled with the transceiver 710 and configured to perform methods as described in various embodiments of the present disclosure or combinations thereof. Optionally, the base station may also include a memory 730 on which a computer program is stored. The transceiver 710, the processor 720, and the memory 730 are configured to perform the operations of the methods and / or embodiments of various embodiments of the present disclosure or combinations thereof. Although the transceiver 710, the processor 720 and the memory 730 are shown as separate entities, they may be implemented as a single entity, such as a single chip. The transceiver 710, the processor 720, and the memory 730 may be electrically connected or coupled to each other. Transceiver 710 may transmit signals to and receive signals from UEs. Processor 720 may include one or more processing units, and may control the transceiver and / or memory to perform operations and / or functions according to one of the above embodiments. The memory 730 may store instructions or computer programs for implementing the operations and / or functions of one of the above-described embodiments. The instructions or computer programs, when executed by a processor, may cause the processor to perform the methods and / or operations and / or functions of various embodiments of the present disclosure or combinations thereof.

[0309] In one embodiment, the base station may send a first message to a user equipment (UE), the first message including N1 DTX configurations, the N1 DTX configurations including DTX configurations of a serving cell(s) or DTX configurations of beam(s) of the serving cell(s); transmitting a second message to the UE, the second message including a list of CSI configurations of neighbor cells, wherein the CSI configurations comprise at least one of the following information for at least one neighbor cell: a cell identity of the neighbor cell, Synchronization Signal Block (SSB) periodicity, and / or Channel State Information Reference Signal (CSI-RS) periodicity, and an SSB index and / or a CSI-RS index; and receiving, from the UE, its measurement results based on the first message and the second message, wherein N1 is a natural number less than or equal to the total number of beams supported by the base station. The first message may also include neighbor cells or beam DTX configurations of neighbor cells.

[0310] According to an embodiment of the present disclosure, a computer-readable storage medium storing instructions may also be provided, wherein when the instructions are executed by at least one processor, the at least one processor is caused to execute an exemplary embodiment according to the present disclosure. Any of the above methods. Examples of computer readable storage media herein include: read-only memory (ROM), random access programmable read-only memory (PROM), electrically erasable programmable read-only memory (EEPROM), random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), flash memory, non-volatile memory, CD-ROM, CD-R, CD + R, CD-RW, CD + RW, DVD-ROM, DVD-R, DVD + R, DVD-RW, DVD + RW, DVD-RAM, BD-ROM, BD-R, BD-R LTH, BD-RE, Blu-ray or optical disc memory, hard disk drive (HDD), solid state disk (SSD), card memory such as, a Multimedia Card, a Secure Digital (SD) card or an Extreme Digital (XD) card, a magnetic tape, a floppy disk, a magneto-optical data storage device, an optical data storage device, a hard disk, a solid-state disk and any other device that is configured to store and provide a computer program and any associated data, data files and data structures in a non-transitory fashion to a processor or computer so that the processor or computer can execute the computer program. The instructions or computer program in the computer readable storage medium described above may run in an environment deployed in computer equipment such as a client, host, proxy device, server, etc. Further, in one example, the computer program and any associated data, data files, and data structures are distributed across networked computer systems so that the computer program and any associated data, data files, and data structures are stored, accessed, and executed in a distributed fashion by one or more processors or computers.

[0311] Those skilled in the art will appreciate that the above illustrative embodiments are described herein and are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein may be combined in any combination. Additionally, other embodiments may be utilized, and other changes may be made, without departing from the spirit and scope of the subject matter presented herein. It will be readily understood that the aspects of the invention of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are contemplated herein.

[0312] Those of skill in the art will appreciate that the various illustrative logical blocks, modules, circuits, and steps described herein may be implemented as hardware, software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such design decisions should not be interpreted as causing a departure from the scope of the present application.

[0313] The various illustrative logical blocks, modules, and circuits described herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0314] The steps of a method or algorithm described herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.

[0315] In one or more exemplary designs, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer.

[0316] The above descriptions are only exemplary embodiments of the present application and are not intended to limit the scope of protection of the present application, which is determined by the appended claims.

Claims

1.A method performed by a user equipment (UE) in a wireless communication system, the method comprising:receiving, from a base station, a first message comprising an N1 discontinuous reception (DTX) configuration comprising DTX configurations of a serving cell or DTX configurations of beams of the serving cell;receiving, from the base station, a second message comprising a list of channel state information (CSI) configurations of neighbor cells, wherein the CSI configurations comprise at least one of information for at least one neighbor cell and the information for at least one neighbor cell includes at least one of a cell identity of a neighbor cell, a synchronization signal block (SSB) periodicity, a CSI-reference signal (CSI-RS) periodicity, an SSB index, or a CSI-RS index;based on the first message and the second message, performing layer 1 (L1)-reference signal received power (RSRP) measurement of the serving cell in a first time period; andreporting a measurement result determined based on the L1-RSRP measurement,wherein the L1-RSRP measurement is performed based on at least one of SSB resources or CSI-RS resources,wherein the first time period is determined based on a cycle in the DTX configuration of the serving cell or the beams of the serving cell and a time domain location of the at least one of the SSB resources or the CSI-RS resources,wherein the time domain location of the at least one of the SSB resources or the CSI-RS resources is determined based on the list of CSI configurations of the neighboring cell, andwherein N1 is a natural number less than or equal to a total number of beams supported by the base station.2.The method of claim 1, wherein the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell; a UE DRX cycle; SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources; and time domain locations of the CSI-RS resources,wherein the first time period is determined based on at least one of: maximum among the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, the UE DRX cycle, the SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources; and the time domain locations of the CSI-RS resources,wherein the N1 DTX configurations further comprise information on DTX configurations of the neighbor cells or beams of the neighbor cells, and the DTX configuration of each neighbor cell or beams of the neighbor cell is determined based on at least one of a cell identity of the serving cell or the neighbor cell in the N1 DTX configurations and the SSB index or the CSI-RS index, wherein the first time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell and whether an RS resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in a time domain, andwherein the RS resource includes at least one of SSB resources or CSI-RS resources.3.The method of claim 1, further comprising:based on the first message, measuring the serving cell at least once in a sixth time period at every sixth time period;evaluating whether the serving cell fulfills S criteria; andin case that the UE has evaluated that the serving cell does not fulfill the S criteria within a seventh time period, initiating measurement of the neighbor cells;wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, andwherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and a UE DRX cycle.4.The method of claim 3, wherein the sixth time period or the seventh time period is determined based on the maximum among the UE DRX cycle and the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell.5.A method performed by a base station in a wireless communication system, the method comprising:transmitting, to a user equipment (UE), a first message comprising an N1 discontinuous reception (DTX) configuration comprising DTX configurations of a serving cell or DTX configurations of beams of the serving cell;transmitting, to the UE, a second message comprising a list of channel state information (CSI) configurations of neighbor cells, wherein the CSI configurations comprise at least one of information for at least one neighbor cell and the information for at least one neighbor cell includes at least one of a cell identity of a neighbor cell, a synchronization signal block (SSB) periodicity, a CSI-reference signal (CSI-RS) periodicity, an SSB index, or a CSI-RS index; andreceiving, from the UE, a measurement result based on a layer 1 (L1)-reference signal received power (RSRP) measurement of the serving cell in a first time period,wherein the L1-RSRP measurement is performed based on at least one of SSB resources or CSI-RS resources,wherein the first time period is determined based on a cycle in the DTX configuration of the serving cell or the beams of the serving cell and a time domain location of the at least one of the SSB resources or the CSI-RS resources,wherein the time domain location of the at least one of the SSB resources or the CSI-RS resources is determined based on the list of CSI configurations of the neighboring cell, andwherein N1 is a natural number less than or equal to a total number of beams supported by the base station.6.The method of claim 5, wherein the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell; a UE DRX cycle; SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources; and time domain locations of the CSI-RS resources,wherein the first time period is determined based on at least one of: maximum among the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, the UE DRX cycle, the SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources; and the time domain locations of the CSI-RS resources,wherein the N1 DTX configurations further comprise information on DTX configurations of the neighbor cells or beams of the neighbor cells, and the DTX configuration of each neighbor cell or beams of the neighbor cell is determined based on at least one of a cell identity of the serving cell or the neighbor cell in the N1 DTX configurations and the SSB index or the CSI-RS index, wherein the first time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell and whether an RS resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in a time domain, andwherein the RS resource includes at least one of SSB resources or CSI-RS resources.7.The method of claim 5, wherein the serving cell is measured at least once in a sixth time period at every sixth time period, andin case that the serving cell does not fulfill the S criteria within a seventh time period, a measurement of the neighbor cells is initiated,wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, andwherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and a UE DRX cycle.8.The method of claim 7, wherein the sixth time period or the seventh time period is determined based on the maximum among the UE DRX cycle and the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell.9.A user equipment (UE) in a wireless communication system, the 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, a first message comprising an N1 discontinuous reception (DTX) configuration comprising DTX configurations of a serving cell or DTX configurations of beams of the serving cell,receive, from the base station, a second message comprising a list of channel state information (CSI) configurations of neighbor cells, wherein the CSI configurations comprise at least one of information for at least one neighbor cell and the information for at least one neighbor cell includes at least one of a cell identity of a neighbor cell, a synchronization signal block (SSB) periodicity, a CSI-reference signal (CSI-RS) periodicity, an SSB index, or a CSI-RS index,based on the first message and the second message, perform layer 1 (L1)-reference signal received power (RSRP) measurement of the serving cell in a first time period, andreport a measurement result determined based on the L1-RSRP measurement,wherein the L1-RSRP measurement is performed based on at least one of SSB resources or CSI-RS resources,wherein the first time period is determined based on a cycle in the DTX configuration of the serving cell or the beams of the serving cell and a time domain location of the at least one of the SSB resources or the CSI-RS resources,wherein the time domain location of the at least one of the SSB resources or the CSI-RS resources is determined based on the list of CSI configurations of the neighboring cell, andwherein N1 is a natural number less than or equal to a total number of beams supported by the base station.10.The UE of claim 9, wherein the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell; a UE DRX cycle; SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources; and time domain locations of the CSI-RS resources,wherein the first time period is determined based on at least one of: maximum among the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, the UE DRX cycle, the SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources; and the time domain locations of the CSI-RS resources,wherein the N1 DTX configurations further comprise information on DTX configurations of the neighbor cells or beams of the neighbor cells, and the DTX configuration of each neighbor cell or beams of the neighbor cell is determined based on at least one of a cell identity of the serving cell or the neighbor cell in the N1 DTX configurations and the SSB index or the CSI-RS index, wherein the first time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell and whether an RS resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in a time domain, andwherein the RS resource includes at least one of SSB resources or CSI-RS resources.11.The UE of claim 9, wherein the instructions executable by the at least one processor individually or in any combination further cause the terminal to:based on the first message, measure the serving cell at least once in a sixth time period at every sixth time period,evaluate whether the serving cell fulfills S criteria, andin case that the UE has evaluated that the serving cell does not fulfill the S criteria within a seventh time period, initiate measurement of the neighbor cells,wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, andwherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and a UE DRX cycle.12.The UE of claim 11,wherein the sixth time period or the seventh time period is determined based on the maximum among the UE DRX cycle and the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell.13.A base station in a wireless communication system, the base station 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 base station to:transmit, to a user equipment (UE), a first message comprising an N1 discontinuous reception (DTX) configuration comprising DTX configurations of a serving cell or DTX configurations of beams of the serving cell;transmit, to the UE, a second message comprising a list of channel state information (CSI) configurations of neighbor cells, wherein the CSI configurations comprise at least one of information for at least one neighbor cell and the information for at least one neighbor cell includes at least one of a cell identity of a neighbor cell, a synchronization signal block (SSB) periodicity, a CSI-reference signal (CSI-RS) periodicity, an SSB index, or a CSI-RS index; andreceive, from the UE, a measurement result based on a layer 1 (L1)-reference signal received power (RSRP) measurement of the serving cell in a first time period,wherein the L1-RSRP measurement is performed based on at least one of SSB resources or CSI-RS resources,wherein the first time period is determined based on a cycle in the DTX configuration of the serving cell or the beams of the serving cell and a time domain location of the at least one of the SSB resources or the CSI-RS resources,wherein the time domain location of the at least one of the SSB resources or the CSI-RS resources is determined based on the list of CSI configurations of the neighboring cell, andwherein N1 is a natural number less than or equal to a total number of beams supported by the base station.14.The base station of claim 13, wherein the first time period is determined based on at least one of: the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell; a UE DRX cycle; SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; time domain locations of the SSB resources; and time domain locations of the CSI-RS resources,wherein the first time period is determined based on at least one of: maximum among the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, the UE DRX cycle, the SSB resource periodicity of the serving cell or CSI-RS resource periodicity of the serving cell; the time domain locations of the SSB resources; and the time domain locations of the CSI-RS resources,wherein the N1 DTX configurations further comprise information on DTX configurations of the neighbor cells or beams of the neighbor cells, and the DTX configuration of each neighbor cell or beams of the neighbor cell is determined based on at least one of a cell identity of the serving cell or the neighbor cell in the N1 DTX configurations and the SSB index or the CSI-RS index, wherein the first time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell and whether an RS resource of the serving cell and an RS resource of the neighbor cells overlap or are adjacent in a time domain, andwherein the RS resource includes at least one of SSB resources or CSI-RS resources.15.The base station of claim 13, wherein the serving cell is measured at least once in a sixth time period at every sixth time period, andin case that the serving cell does not fulfill the S criteria within a seventh time period, a measurement of the neighbor cells is initiated,wherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configurations of the serving cell or the DTX configurations of beams of the serving cell, andwherein the sixth time period or the seventh time period is determined based on the cycle in the DTX configuration of the serving cell or the beams of the serving cell and a UE DRX cycle.

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