Method and apparatus for beam management in wireless communication system

Abstract

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The present invention provides a method and device for beam management. In an implementation, there is provided a method using downlink reference signals including multiple signals and / or multiple sequences.

Description

METHOD AND APPARATUS FOR BEAM MANAGEMENT IN WIRELESS COMMUNICATION SYSTEM

[0001] The present invention relates to the field of communication, and more specifically, to a method and device for beam management in wireless communication system.

[0002] Considering the development of wireless communication from generation to generation, the technologies have been developed mainly for services targeting humans, such as voice calls, multimedia services, and data services. Following the commercialization of 5G (5th generation) communication systems, it is expected that the number of connected devices will exponentially grow. Increasingly, these will be connected to communication networks. Examples of connected things may include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machines, and factory equipment. Mobile devices are expected to evolve in various form-factors, such as augmented reality glasses, virtual reality headsets, and hologram devices. In order to provide various services by connecting hundreds of billions of devices and things in the 6G (6th generation) era, there have been ongoing efforts to develop improved 6G communication systems. For these reasons, 6G communication systems are referred to as beyond-5G systems.

[0003] 6G communication systems, which are expected to be commercialized around 2030, will have a peak data rate of tera (1,000 giga)-level bit per second (bps) and a radio latency less than 100μsec, and thus will be 50 times as fast as 5G communication systems and have the 1 / 10 radio latency thereof.

[0004] In order to accomplish such a high data rate and an ultra-low latency, it has been considered to implement 6G communication systems in a terahertz (THz) band (for example, 95 gigahertz (GHz) to 3THz bands). It is expected that, due to severer path loss and atmospheric absorption in the terahertz bands than those in mmWave bands introduced in 5G, technologies capable of securing the signal transmission distance (that is, coverage) will become more crucial. It is necessary to develop, as major technologies for securing the coverage, Radio Frequency (RF) elements, antennas, novel waveforms having a better coverage than Orthogonal Frequency Division Multiplexing (OFDM), beamforming and massive Multiple-input Multiple-Output (MIMO), Full Dimensional MIMO (FD-MIMO), array antennas, and multiantenna transmission technologies such as large-scale antennas. In addition, there has been ongoing discussion on new technologies for improving the coverage of terahertz-band signals, such as metamaterial-based lenses and antennas, Orbital Angular Momentum (OAM), and Reconfigurable Intelligent Surface (RIS).

[0005] Moreover, in order to improve the spectral efficiency and the overall network performances, the following technologies have been developed for 6G communication systems: a full-duplex technology for enabling an uplink transmission and a downlink transmission to simultaneously use the same frequency resource at the same time; a network technology for utilizing satellites, High-Altitude Platform Stations (HAPS), and the like in an integrated manner; an improved network structure for supporting mobile base stations and the like and enabling network operation optimization and automation and the like; a dynamic spectrum sharing technology via collision avoidance based on a prediction of spectrum usage; an use of Artificial Intelligence (AI) in wireless communication for improvement of overall network operation by utilizing AI from a designing phase for developing 6G and internalizing end-to-end AI support functions; and a next-generation distributed computing technology for overcoming the limit of UE computing ability through reachable super-high-performance communication and computing resources (such as Mobile Edge Computing (MEC), clouds, and the like) over the network. In addition, through designing new protocols to be used in 6G communication systems, developing mechanisms for implementing a hardware-based security environment and safe use of data, and developing technologies for maintaining privacy, attempts to strengthen the connectivity between devices, optimize the network, promote softwarization of network entities, and increase the openness of wireless communications are continuing.

[0006] It is expected that research and development of 6G communication systems in hyper-connectivity, including person to machine (P2M) as well as machine to machine (M2M), will allow the next hyper-connected experience. Particularly, it is expected that services such as truly immersive eXtended Reality (XR), high-fidelity mobile hologram, and digital replica could be provided through 6G communication systems. In addition, services such as remote surgery for security and reliability enhancement, industrial automation, and emergency response will be provided through the 6G communication system such that the technologies could be applied in various fields such as industry, medical care, automobiles, and home appliances.

[0007] The present disclosure provides method and apparatus for beam management in wireless communication system.

[0008] According to an aspect of an exemplary embodiment, there is provided method and apparatus for beam management in wireless communication system.

[0009] Aspects of the present disclosure provide efficient communication methods in a wireless communication system.

[0010] FIG.1 illustrates an example wireless network according to various embodiments of the present disclosure;

[0011] FIGs. 2A and 2B illustrate example wireless transmit and receive paths according to the present disclosure;

[0012] FIG. 3A illustrates an example user equipment according to the present disclosure, and FIG. 3B illustrates an example base station according to the present disclosure;

[0013] FIG. 4 illustrates an example diagram of random access procedure;

[0014] FIG. 5 illustrates an example diagram of gDRS signal format 1;

[0015] FIG. 6 illustrates an example diagram of gDRS signal format 2;

[0016] FIG. 7 illustrates an example diagram of gDRS signal format 3;

[0017] FIG. 8 illustrates an example diagram of gDRS signal format 4;

[0018] FIG. 9 illustrates an example structure diagram of a user equipment (UE) according to an embodiment of the present disclosure;

[0019] FIG.10 illustrates an example structural diagram of a base station according to an embodiment of the present disclosure;

[0020] FIG. 11 is a block diagram of a terminal or user equipment (UE) according to an embodiment of the disclosure;

[0021] FIG. 12 is a block diagram of a base station (BS) according to an embodiment of the disclosure; and

[0022] FIG. 13 is a block diagram of a network entity according to an embodiment of the disclosure.

[0023] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called "Beyond 4G networks" or "Post-LTE systems".

[0024] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0025] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0026] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0027] 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.

[0028] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0029] It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces.

[0030] The term “include” or “may include” refers to the existence of a corresponding disclosed function, operation or component which can be used in various embodiments of the present disclosure and does not limit one or more additional functions, operations, or components. The terms such as “include” and / or “have” may be construed to denote a certain characteristic, number, step, operation, constituent element, component or a combination thereof, but may not be construed to exclude the existence of or a possibility of addition of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0031] The term “or” used in various embodiments of the present disclosure includes any or all of combinations of listed words. For example, the expression “A or B” may include A, may include B, or may include both A and B.

[0032] Unless defined differently, all terms used herein, which include technical terminologies or scientific terminologies, have the same meaning as that understood by a person skilled in the art to which the present disclosure belongs. Such terms as those defined in a generally used dictionary are to be interpreted to have the meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted to have ideal or excessively formal meanings unless clearly defined in the present disclosure.

[0033] The various embodiments of the present disclosure can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system Frequency division duplex (FDD) systems, time division duplex (TDD) systems, universal mobile telecommunications systems (UMTS), global interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) systems or new wireless (NR) systems, etc. In addition, the various embodiments of the present disclosure can be applied to future oriented communication technologies.

[0034] 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.

[0035] 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.

[0036] 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).

[0037] gNB 102 provides wireless broadband access to the network 130 for a first multiple User Equipments (UEs) within a coverage area 120 of gNB 102. The first multiple 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 multiple UEs within a coverage area 125 of gNB 103. The second multiple 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.)

[0048] 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.

[0049] 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.

[0050] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmission (TX) processing circuit 315, a microphone 320, and a reception (RX) processing circuit 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface 345, an input device(s) 350, a display 355, and a memory 360. The memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0051] The RF transceiver 310 receives an incoming RF signal transmitted by a gNB of the wireless network 100 from the antenna 305. The RF transceiver 310 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 325, where the RX processing circuit 325 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 325 transmits the processed baseband signal to speaker 330 (such as for voice data) or to processor / controller 340 for further processing (such as for web browsing data).

[0052] The TX processing circuit 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email or interactive video game data) from processor / controller 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 305.

[0053] The processor / controller 340 can include one or more processors or other processing devices and execute an OS 361 stored in the memory 360 in order to control the overall operation of UE 116. For example, the processor / controller 340 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 310, the RX processing circuit 325 and the TX processing circuit 315 according to well-known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0054] The processor / controller 340 is also capable of executing other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. The processor / controller 340 can move data into or out of the memory 360 as required by an execution process. In some embodiments, the processor / controller 340 is configured to execute the application 362 based on the OS 361 or in response to signals received from the gNB or the operator. The processor / controller 340 is also coupled to an I / O interface 345, where the I / O interface 345 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 345 is a communication path between these accessories and the processor / controller 340.

[0055] The processor / controller 340 is also coupled to the input device(s) 350 and the display 355. An operator of UE 116 can input data into UE 116 using the input device(s) 350. The display 355 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 360 is coupled to the processor / controller 340. A part of the memory 360 can include a random access memory (RAM), while another part of the memory 360 can include a flash memory or other read-only memory (ROM).

[0056] 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 processor / controller 340 can be divided into multiple 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.

[0057] 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.

[0058] As shown in FIG. 3B, gNB 102 includes multiple antennas 370a-370n, multiple 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 multiple 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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, multiple instructions, such as the BIS algorithm, are stored in the memory. The multiple 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.

[0065] 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.

[0066] 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).

[0067] The time domain unit (also called time unit) in this application may be: an OFDM symbol, an OFDM symbol group (consisting of multiple OFDM symbols), a slot, a slot group (consisting of multiple slots), a subframe, a subframe group (consisting of multiple subframes), a system frame, a system frame group (composed of multiple system frames); may also be in absolute time units, such as 1 millisecond, 1 second, etc.; the time unit may also be a combination of multiple granularities, such as K1 slots plus K2 OFDM symbols.

[0068] The frequency domain unit (also called frequency unit) in this application may be: a subcarrier, a subcarrier group (composed of multiple subcarriers), a resource block (resource block, RB), which may also be called a physical resource block (physical resource block, PRB), a resource block group (consisting of multiple RBs), a bandwidth part (BWP), a bandwidth part group (consisting of multiple BWPs), a frequency band / carrier, a frequency band group / carrier group; may also be in absolute frequency domain units, such as 1 Hz, 1 kHz, etc.; frequency domain unit may also be a combination of multiple granularities, such as M1 PRBs plus M2 subcarriers.

[0069] The exemplary embodiments of the present disclosure are further described below in conjunction with the accompanying drawings.

[0070] The text and drawings are provided as examples only to aid the reader in understanding the present disclosure. They are not intended, nor should they be construed, to limit the scope of the disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based upon this disclosure, that changes may be made to the embodiments and examples shown without departing from the scope of the disclosure.

[0071] Those skilled in the art will understand that, as used herein, the singular forms "a," "an," "the," and "said" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should be further understood that the term "include" used in the specification of this application refers to the presence of stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It will be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and / or" includes all or any units and all combinations of one or more of the associated listed items.

[0072] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined herein.

[0073] It will be understood by those skilled in the art that "terminal", "terminal device", as used herein, includes both devices that are wireless signal receiver, which are provided with only wireless signal receiver without transmission capability, and devices that are receive and transmit hardware, which are provided with receive and transmit hardware capable of bidirectional communication over a bidirectional communication link. Such devices may include: cellular or other communication devices with single line displays or multi-line displays or cellular or other communication devices without multi-line displays; a PCS (Personal Communications Service), which may combine voice, data processing, facsimile and / or data communications capabilities; a PDA (Personal Digital Assistant) that may include a radio frequency receiver, a pager, Internet / intranet access, a web browser, a notepad, a calendar and / or a GPS (Global Positioning System) receiver; a conventional laptop and / or palmtop computer or other device that has and / or includes a conventional laptop and / or palmtop computer or other device that has a radio frequency receiver. "Terminal", "terminal device", as used herein, may be portable, transportable, installed in a vehicle (aeronautical, marine, and / or land), or adapted and / or configured to operate locally, and / or in a distributed fashion, at any other location in earth and / or space. "Terminal", "terminal device", as used herein, may also be a communication terminal, a web terminal, a music / video playing terminal, and may be, for example, a PDA, a MID (Mobile Internet Device), and / or a mobile phone with music / video playing function, and may also be a smart TV, a set-top box, or the like device.

[0074] The term "send" in the present invention may be used interchangeably with "transmit", "report", "inform", and the like without departing from the scope of the present invention.

[0075] The text and drawings are merely provided by way of example to aid the reader in understanding the present disclosure. They are not intended, nor should they be construed, to limit the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those of skill in the art, based upon the disclosure herein, that changes can be made to the embodiments and examples shown without departing from the scope of the disclosure.

[0076] The transmission links of the wireless communication system mainly comprise downlink communication links by the 5G gNB to the user equipment (UE) and uplink communication links by the UE to the network.

[0077] Nodes for positioning measurements in a wireless communication system, such as current wireless communication systems, include a UE that initiates a positioning request message, a Location Management Function (LMF) for positioning of the UE and transmission of positioning assistance data, a gNB or Transmission-Reception Point (TRP) that broadcasts positioning assistance data and makes uplink positioning measurements, a UE for downlink positioning measurements. Furthermore, the method of the present invention may also be extended to apply in other communication systems, e.g. automotive communication (V2X), e.g. sidelink communication, in such case the transmission reception point or UE may be any device in V2X.

[0078] Transmissions in a wireless communication system include transmissions by a base station (gNB) to a user equipment (UE), referred to as downlink transmissions, corresponding slots referred to as downlink slots, and transmissions by a UE to a base station device, referred to as uplink transmissions, corresponding slots referred to as uplink slots.

[0079] In downlink communication of a wireless communication system, the system transmits synchronization signals and broadcast channels to users over a synchronization signal block (synchronization signal / PBCH block, SSB) with a periodicity, the periodicity is a synchronization signal block periodicity (SSB periodicity), otherwise known as a synchronization signal block burst periodicity (SSB burst periodicity). At the same time, the base station configures a physical random access channel configuration period (PRACH configuration period) in which a certain number of random access transmission occasions (also referred to as PRACH transmission occasions, ROs) are configured, the configured ROs being determined by a certain validity rule to obtain valid ROs; and it is satisfied that within an association period (a certain length of time) all SSBs can be mapped onto the corresponding valid ROs, in an SSB to RO mapping cycle, all SSBs within one SSB periodicity can be exactly mapped onto the required random access resources, there may be one or more mapping cycles within one association period. One SSB-to-RO association pattern period contains one or more association periods, and the SSB-to-RO mapping patterns in each association pattern period are the same.

[0080] In New Radio (NR) communication systems, before radio resource control is established, such as during the random access process, the performance of random access directly affects the user experience. In traditional wireless communication systems, such as LTE and LTE-Advanced, or in 5G or NR systems, the random access process is applied to multiple scenarios such as establishing initial link, cell handover, re-establishing uplink link, RRC connection reestablishment, etc., and is divided into contention-based random access and contention-free random access according to whether the user monopolizes the preamble sequence resources. Since in contention-based random access, each user selects a preamble sequence from the same preamble sequence resource when trying to establish an uplink link, multiple users may select the same preamble sequence and send it to the base station. Therefore, the contention resolution mechanism is an important research direction in random access. How to reduce the probability of collision and how to quickly resolve collision that have occurred are key metric that affect the performance of random access.

[0081] FIG. 4 illustrates a schematic diagram of a 4-step random access procedure. For example, the contention-based random access process is divided into four steps, as shown in FIG.4. In the first step, the user randomly selects a preamble sequence from the preamble sequence (also interchangeably referred to as "preamble" herein) resource pool and transmits it to the base station. The base station performs correlation detection on the received signal, thereby identifying the preamble sequence transmitted by the user; in the second step, the base station transmits to the user a random access response (RAR), including a random access preamble sequence identifier, a timing advance command determined based on the time delay estimation between the user and the base station, and a temporary cell-radio network temporary identifier (C-RNTI), and the time-frequency resources allocated for next uplink transmission of the user; the user shall search for the PDCCH carrying such feedback based on the RA-RNTI associated with the PRACH occasion where the random access preamble sequence is transmitted. The RA-RNTI associated with the PRACH occasion (RO) for transmitting the random access preamble sequence is calculated according to the following formula:

[0082] RA-RNTI = 1 + s_id + 14 × t_id + 14 × 80 × f_id + 14 × 80 × 8 × ul_carrier_id,

[0083] where s_id is the index of the first OFDM symbol of this PRACH occasion (0 < s_id < 14), t_id is the index of the first slot of this PRACH occasion in the system frame (0 < t_id < 80), where the subcarrier spacing used to determine t_id is based on the value of μ specified in TS 38.211, section 5.3. 2, for μ = {0, 1, 2, 3}, for μ = {5, 6}, t_id is the index of the 120 kHz slot containing the PRACH occasion in the system frame (0 < t_id < 80), f_id is the index of the PRACH occasion in frequency domain (0 < f_id < 8), UL_carrier_id is the UL carrier used for random access preamble transmission (0 for normal uplink (NUL) carrier, 1 for SUL carrier).

[0084] In the third step, the user transmits a third message (message 3, Msg3) to the base station based on the information in the RAR. Msg3 contains information such as user terminal identifier and RRC connection request and the like, where the user terminal identifier is unique to the user and is used to resolve contention; in the fourth step, the base station transmits a contention resolution identifier to the user, including the identifier of the user terminal that wins in the contention resolution. After detecting its own identifier, the user upgrades the temporary C-RNTI to C-RNTI, transmits an ACK signal to the base station, completing the random access procedure, and waits for the scheduling of the base station. Otherwise, the user will start a new random access procedure after a delay of time.

[0085] For the contention-free random access procedure, since the base station knows the user identifier, and may allocates a preamble sequence to the user. Therefore, when transmitting the preamble sequence, the user does not need to randomly select a sequence, but uses the allocated preamble sequence. After detecting the allocated preamble sequence, the base station will send a corresponding random access response, including timing advance and uplink resource allocation information. After receiving the random access response, the user considers that the uplink synchronization has been completed and waits for further scheduling of the base station. Therefore, the contention-free random access procedure only includes two steps: step 1 is to send the preamble sequence; step 2 is to send a random access response.

[0086] For example, the random access procedure is applicable to the following scenarios:

[0087] 1. Initial access in RRC_IDLE;

[0088] 2. Re-establish RRC connection;

[0089] 3. Cell handover;

[0090] 4. Downlink data arrives in RRC connected state and requests a random access procedure (when the uplink is asynchronous);

[0091] 5. Uplink data arrives in the RRC connected state and requests a random access procedure (when the uplink is asynchronous or no resources are allocated to the scheduling request in the PUCCH resources);

[0092] 6. Positioning.

[0093] When accessing the 5G wireless communication system, beamforming technology may be used, and the UE needs to find a (transmit and / or receive) beam that is operable to communicate with the base station. In the traditional method, the base station or UE needs to use a separate reference signal (such as CSI-RS or SRS) to send each possible beam, and then the reference signal is measured by the UE or base station to obtain the (transmit and / or receive) beam which is operable; however, the resource overhead and delay of this method are relatively large. Therefore, how to obtain accurate (transmit and / or receive) beams that is operable quickly and / or with less resource overhead is a problem that needs to be solved.

[0094] Aspects and principles of the present disclosure will be described in more detail below, with reference to the accompanying drawings and examples. It is to be understood that the following description is by way of example only, and that the terms or nouns used are by way of example only and are not intended to be limiting. In addition, in the description of the present disclosure, for convenience of description, when describing a general uplink reference signal or downlink reference signal, the number of reference signals, the number of sequences of the reference signal, the number of repetitions of the reference signal, or the number of repetitions of the sequence of the reference signal will be described as N, and N is described 3 as an example, and accordingly the number of associated beams used for transmission or reception is described as 3 as an example, however this is only exemplary. It may be understood that the principles and technical essence of the present disclosure can also be applied to the case where N is other values, and also to the case where the number of associated beams is other values. All of these, are within the scope of the present disclosure.

[0095] In addition, in the description of the present disclosure, "beam" may be replaced by "spatial filter", "quasi-co-located (QCL) antenna port", "QCLed time-frequency resource", "QCL source", "QCL assumption", "TCI state", "resource index", etc., "beam index" may be replaced by other resource indexes, such as "spatial filter coefficient", "quasi-co-located (QCL) antenna port number", " QCLed time-frequency resource index", "QCL source index", "QCL assumption index", "TCI state index", "resource index", etc. For example, a UE receiving a signal using a beam related to a reference signal, may be understood as the UE expecting to receive the signal using the same spatial filter coefficient, quasi-co-located (QCL) antenna port, QCLed time-frequency resources, the same QCL source, the same QCL assumption, the same TCI state, or the same resource index as the reference signal.

[0096] In an embodiment of the present invention, a method and device for beam management will be introduced. In embodiments of the present disclosure, a first beam mode may be used for the transmission and / or reception of the reference signal, and the first beam mode uses multiple beams with association relationship to transmit and / or receive signal, thereby enabling beam management with less latency, lower overhead, or higher / more flexible granularity to obtain narrow beams for communication. In addition, it can also be used to perform the beam failure recovery procedure with lower overhead or faster. In an implementation, the first beam mode transmits multiple reference signals and / or multiple sequences of reference signal using multiple beams having association relationship. The multiple reference signals and / or multiple sequences of reference signal may be received using the same beam or using multiple beams with association relationship. In an implementation, the same beam may be used to transmit multiple reference signals and / or multiple sequences of reference signal, and for the reception of the multiple reference signals and / or multiple sequences of reference signal, multiple beams with association relationship may be used. Through the method provided by the embodiments of the present disclosure, by utilizing the association between multiple beams for transmitting multiple reference signals and / or multiple sequences of reference signal, based on the measurement results of the multiple reference signals and / or multiple sequences of reference signal, beam management may be performed quickly to obtain narrow beams for communication. In addition, in one implementation, the beam failure recovery procedure may also be performed more efficiently.

[0097] In an implementation, the first beam mode relates to differential beamforming (DBF), whereby the first beam mode relates to transmitting and / or receiving signals using a sum beam and at least one differential beam. By applying DBF to the signal transmission at the transmitting end and / or the signal reception at the receiving end, the base station and the UE may quickly determine the transmit direction and / or receive direction of the signal, which is beneficial to quickly determining the appropriate transmit beam and / or or receive beam. By using such method, the efficiency in beam management may be improved, delay overhead and energy consumption overhead may be saved (for example, reducing the number or frequency of operations such as transmitting and measuring, reporting, etc.), and the accuracy of the selected beam may be improved. Differential beamforming is used in the present disclosure to explain the solution, but this is only exemplary and is for the convenience of the inventor to fully describe his technical concepts and technical principles, rather than for the purpose of limiting the principles of the present disclosure only to beam management method using differential beamforming.

[0098] It may be understood that although most of the description of the present disclosure describes the beam management solution using DBF as an example of the first beam mode applied to the transmission and / or reception of signals, the principles disclosed in the present disclosure can equally applied to scenarios using other technical solutions as the first beam mode. For example, for a scenario in which a solution that has optimized beam codebook design as the first beam mode, the method of the present disclosure may also be applicable.

[0099] Two signal types may be used in the beam management of the present invention, the transmission and / or reception of a general downlink reference signal (gDRS), and / or the transmission and / or reception of a general uplink reference signal (gURS). In the present invention, CSI-RS is used as an example of a general downlink reference signal related to beam management for description of the solution, but this is only exemplary, and CSI-RS may also be replaced by other gDRS, such as SSB, PRS, etc. In the present invention, SRS is used as an example of a general uplink reference signal related to beam management to describe the solution, but this is only exemplary, and SRS may also be replaced by other gURS, such as PRACH, PUCCH, etc.

[0100] The method provided by the embodiment of the present disclosure can effectively perform downlink beam management (or, which may also include potential beam failure recovery) operations, for example, including one or a combination of multiple operations of the following:

[0101] -the UE receives a first gDRS transmitted by, for example a network device (such as a base station, etc.), where specific operations include one or more of:

[0102] --the UE receives indication information of whether the first beam mode is enabled, such as indication information of whether DBF (DBF will be described below as a non-limiting example of the first beam mode) is enabled. For example, through this indication, the UE can determine whether the base station has enabled the mode of transmitting gDRS based on DBF, that is, the UE determines whether the measured feedback value corresponding to DBF is to be obtained by receiving gDRS;

[0103] --the UE receives configuration information on the first gDRS, including one or more of:

[0104] ---time-frequency resource configuration information of the first gDRS, including configuration information for time domain (time domain unit starting point of each gDRS occasion, the number of time domain units occupied by each gDRS occasion, etc.) and / or frequency domain (frequency domain unit starting point of each gDRS occasion, the number of frequency domain units occupied by each gDRS occasion, etc.), where a gDRS occasion is represented as a set of the number of time domain units and the number of frequency domain units transmitting a complete signal in a gDRS signal format, such as N0 OFDM symbols and M0 PRBs;

[0105] ---sequence configuration information of the first gDRS, including sequence length information, and / or sequence initial index, and / or sequence type indication required to generate the first gDRS sequence;

[0106] ---transmit power indication information of the first gDRS, which indicates the downlink transmit power value of the first gDRS, including the absolute power dB value, and / or the difference between the downlink transmit power value of the first gDRS and the transmit power of SSB, so that the UE may obtain the downlink transmit power value of the first gDRS based on the transmit power of SSB and the difference; the downlink transmit power value of the first gDRS may help the UE further obtain a downlink path loss measured value for possible subsequent uplink transmit power calculation, etc.;

[0107] ---signal format configuration information of the first gDRS, including one or more of the following signal formats:

[0108] ----signal format 1, in which there are Nd sequences within a gDRS signal in time domain (which may be Nd different sequences, or Nd repetitions of the same sequence), as shown in FIG. 5, it is the diagram of the signal format when Nd = 3; optionally, optionally, a first beam, a second beam, and a third beam are used on the three sequences to transmit the corresponding sequences, respectively, where the first beam, the second beam, and the third beam are associated beams involved in the first beam mode. For example, when the first beam mode involves DBF, the first beam may be a sum beam, and the second and third beams may be differential beams;

[0109] -----in an implementation, the Nd sequences are continuous or adjacent in time domain;

[0110] -----in an implementation, the Nd sequences have a first time gap in time domain, and the first time gap may facilitate beam switching when the network device transmits the Nd sequences;

[0111] ----signal format 2, which consists of Nd gDRS signals, which may be Nd repetitions of a gDRS signal, or Nd different gDRS signals. Optionally, each gDRS signal may have multiple sequences as in FIG. 5. As shown in the example of FIG. 6, it is a schematic diagram of the signal format when Nd = 3; optionally, the first beam, the second beam, and the third beam are used on the three gDRS signals to transmit corresponding sequences;

[0112] -----in an implementation, the Nd gDRS signals are continuous or adjacent in time domain;

[0113] -----in an implementation, the Nd gDRS signals have a first time gap in time domain, and the first time gap may be beneficial to the network device performing beam switching when transmitting the N gDRS signals;

[0114] ----signal format 3, in which there are Nd sequences within a gDRS signal in frequency domain (which may be Nd different sequences, or Nd repetitions of the same sequence), as shown in FIG. 7, it is the schematic diagram of signal format when Nd = 3; optionally, the first beam, the second beam, and the third beam are used on the three sequences respectively to transmit the corresponding sequences;

[0115] -----in an implementation, the Nd sequences are continuous or adjacent in frequency domain, or the Nd sequences may have frequency domain a frequency domain gap in frequency domain;

[0116] ----signal format 4, in which there are N1+M1 sequences within a gDRS signal in time domain (it may be N1+M1 different sequences, or N1+M1 repetitions of the same sequence), as shown in the example of FIG. 8, which is a schematic diagram of the signal format when N1 = 3, M1 = 2; optionally, the first beam is used to transmit on the N1 = 3 sequences, and the second beam and the third beam are to transmit on the M1 = 2 sequences respectively; in an implementation, the N1 sequences transmitted using the first beam are the first N1 sequences among the N1+M1 sequences; wherein, N1 is related to the number of beams used by the UE to receive in the first beam mode, and M1 is related to the number of beams used by the network device to transmit in the first beam mode. For example, if the UE receives gDRS using 3 beams in the first beam mode, N1 = 3, if the network device transmits gDRS using 3 beams in the first beam mode, M1 = 3-1 = 2; in addition, N1 and M1 may also be set to other values related to the number of receive beams of the UE and the number of transmit beams of the network device in the first beam mode;

[0117] -----the N1+M1 sequences may be replaced with the form as signal format 2, such as the case of N1+M1 gDRS signals. The method is similar and will not be described again;

[0118] -----in an implementation, the N1+M1 sequences are continuous or adjacent in time domain;

[0119] -----in an implementation, the N1+M1 sequences have a first time gap in time domain, and the first time gap may facilitate beam switching when the network device transmits the N1+M1 sequences;

[0120] ----The number of sequences or signals or repetitions in the above various signal formats may be the same or different. For example, the representation with Nd is only for convenience of expression, and is not intended to limit the number of sequences, signals, or repetitions involved in various signal formats to the same number;

[0121] ----The N1 and M1 are positive integers, which are predefined or network device configured values;

[0122] ----The first time gap may be:

[0123] -----a predefined or network configured time unit value;

[0124] -----may be obtained by shifting a sequence with a first sample number;

[0125] --In an implementation, the UE receives the first gDRS using the same beam in the occasion of a gDRS;

[0126] --In an implementation, the UE may receive the first gDRS using multiple different beams associated with the first beam mode in a gDRS occasion;

[0127] -the UE obtains a first measured feedback value based on the received first gDRS, and reports the first measured feedback value to the network device, where specific operations include one or more of:

[0128] --The first measured feedback value includes one or more of:

[0129] ---a received signal measured value, which may be a reference signal received power value (RSRP), and / or a reference signal received path power (RSRPP); when RSRPP is the received signal measured value, the path may be the first path in the time domain, the first path with a power amplitude greater than (not less than) a certain threshold in the time domain, or the path with the largest power amplitude in the time domain; the index of the above path in the sampled path set is labeled as the selected path index i;

[0130] ---the received signal ratio including the ratio of the received signal measured value of the received first beam signal (received signal measured value 1) to the received signal measured value of the received second beam signal (received signal measured value 2), i.e., received signal ratio12 = received signal measured value 1 / received signal measured value 2, which may also be extended to the ratio of the received signal measured value of the first beam signal to the received signal measured value of the received third beam signal (received signal 2), that is, signal ratio 13 = received signal measured value 1 / received signal measured value 3;

[0131] ----optionally, when the RSRPP of a path is selected for ratio, the received signals of path obtained by receiving each beam signal are all the same selected path index described above; the selected path index may be obtained by receiving the signal of the first beam, and then based on the selected path, the RSRPP value of path with the corresponding path index of receiving the signal of the second beam and / or the third beam is obtained, and the ratio is calculated, that is, received signal ratio 12= RSRPPi 1 / RSRPPi 2 or received signal ratio 13 = RSRPPi 1 / RSRPPi 3;

[0132] ---an angle deviation value (or an angle adjustment value) including an angle deviation value from a reference direction, where the reference direction is the boresight direction of the first beam, which may also be a specific direction indicated by the base station;

[0133] ---a desired beam index; the UE feeds back the desired beam index inferred based on the measurement results, which may include: based on the obtained angle deviation value, the boresight direction corresponding to the current beam index and the boresight direction corresponding to other beam indexes, the UE may infer that the boresight direction of another beam index is closer to the signal reception by the UE. For example, the boresight direction of the current beam index (expressed as beam index 1) is 30 degree, and the boresight directions of the other two beam indexes (beam index 0 and beam index 2) are 24 degree and 36 degree respectively, and the angle deviation value obtained by measurement is +5 degree, that is, 35 degree is the best beam direction for transmitting to the UE, at this time, beam index 2 is the desired beam index;

[0134] --the UE obtains configuration information for transmitting, feeding back, or reporting the first measured feedback value, the configuration information including at least one of:

[0135] ---mapping relationship between sequence resources and measured feedback values; for example, when feedback is based on sequence-based transmission, taking PRACH as an example, PRACH resources (including PRACH time-frequency resources, PRACH occasions, or PRACH sequences) may be grouped, and each group corresponds to one or a group of measured feedback values. The UE determines the corresponding PRACH resource group based on the obtained measured feedback value, and selects or determines PRACH resource from the obtained PRACH resource group for PRACH transmission;

[0136] ---uplink resource information for transmitting the measured feedback value; for example, when feedback is based on data transmission, such as PUCCH and / or PUSCH, the UE transmits the obtained measured feedback value to the network device using the corresponding PUCCH and / or PUSCH resources; wherein,

[0137] ----the corresponding PUCCH and / or PUSCH resources (including time-frequency resources, and / or DMRS resources) may be pre-configured, or obtained by the UE through the configuration information of the network device;

[0138] ----in an implementation, it may be transmitted through UCI on PUSCH;

[0139] ----in an implementation, it may be carried through MAC CE;

[0140] ---corresponding timing configuration information (for example, reporting will not occur until time N3+X1), for example, setting a reference time as the timing of N3 time unit, and feedback will not occur until X1 time units after such timing N3, including selecting the first available PUSCH and PUCCH resource after the timing N3+X1, or the UE does not expect to receive the PUCCH or PUSCH resources configured by the base station within X1 time units after the timing of N3 time unit; wherein the reference time may be one or more of:

[0141] ----ending time unit of the last gDRS occasion measured

[0142] ----ending time unit in a measurement gap (or measurement period, measurement window);

[0143] ----ending time unit of the last gDRS occasion in measurement gap (or measurement period, measurement window)

[0144] ----ending time unit for receiving PDCCH scheduling and configuring PUCCH resource or PUSCH resource

[0145] -the UE receives the second gDRS transmitted by such as the network device (for example, obtained by the base station, etc., based on the first measured feedback value), where the specific operation includes receiving configuration information related to the second gDRS, and the configuration information includes one or more of:

[0146] --time-frequency resource configuration information of the second gDRS, including configuration information in time domain (the time domain unit starting point of each gDRS occasion, the number of time domain units occupied by each gDRS occasion, etc.) and / or frequency domain (the frequency domain unit starting point of each gDRS occasion, the number of frequency domain units occupied by each gDRS occasion, etc.), where a gDRS occasion is represented as a set of the number of time domain units and the number of frequency domain units transmitting a complete signal in a gDRS signal format, such as N OFDM symbols and M PRBs;

[0147] --sequence configuration information of the second gDRS, including sequence length information, and / or sequence initial index, and / or sequence type indication required to generate the second gDRS sequence; in an implementation, the sequence configuration information of the second gDRS reuses the sequence configuration information of the aforementioned first gDRS. For example, the sequence configuration information of the second gDRS is the same as the sequence configuration information of the aforementioned first gDRS, and the same sequence is used;

[0148] --transmit power configuration information of the second gDRS, which indicates the downlink transmit power value of the second gDRS, including one or more of:

[0149] ---an absolute power dB value,

[0150] ---difference between the downlink transmit power value of the second gDRS and the transmit power of SSB, so that the UE may obtain the downlink transmit power value of the second gDRS based on the transmit power of SSB and the difference; the SSB is the SSB configured through the system information, or the SSB selected by the UE from the SSBs configured in the system information, or the SSB selected by the UE during the random access procedure;

[0151] ---difference between the downlink transmit power value of the second gDRS and the transmit power of the first gDRS, so that the UE may obtain the downlink transmit power value of the second gDRS based on the transmit power of the first gDRS and the difference;

[0152] ---information indicating that the downlink transmit power value of the second gDRS reuses the downlink transmit power value of the first gDRS, for example, indicating that the downlink transmit power value of the second gDRS is the same as the downlink transmit power value of the first gDRS, the same downlink transmit power value is used;

[0153] ---the downlink transmit power value of the second gDRS can help the UE further obtain a downlink path loss measured value for possible subsequent uplink transmit power calculations, etc.;

[0154] --signal format configuration information of the second gDRS, including one or more of:

[0155] ---configurable signal formats include the aforementioned possible signal formats of the first gDRS;

[0156] ---optionally, the configured signal format of the second gDRS reuses the signal format of the aforementioned first gDRS. For example, the signal format configuration information includes information indicating that the signal format of the second gDRS reuses the signal format of the aforementioned first gDRS, that is, the signal format of the second gDRS is the same as the signal format of the aforementioned first gDRS, and the same signal format is used;

[0157] ---optionally, the UE may initiate a request to the network device to enable reception of signals in DBF. Optionally, if the UE initiates a request to the network device to enable reception of signals in DBF, the UE expects to receive a gDRS in format 4;

[0158] -the UE obtains a second measured feedback value based on the received second gDRS, and reports the second measured feedback value to the network device, including one or more of:

[0159] --the second measured feedback value includes one or more of the following (e.g., may additionally include CQI or other types of channel quality related information), including one or more of:

[0160] ---all possible types of the first measured feedback value described above;

[0161] ---channel state information (CSI), including CQI, PMI, RI, etc.;

[0162] ---optionally, the second measured feedback value may also include a path loss value, which may not be reported to the network device, but used for uplink transmit power calculation for communications with the network device;

[0163] --the UE obtains configuration information for transmitting, feeding back, or reporting the second measured feedback value, the configuration information comprising at least one of:

[0164] ---mapping relationship between sequence resources and measured feedback values; for example, when the second measured feedback value is feedback based on sequence-based transmission, taking PRACH as an example, PRACH resources (including PRACH time-frequency resources, PRACH occasions, or PRACH sequences) may be grouped, and each group corresponds to one or a group of measured feedback values. The UE determines the corresponding PRACH resource group based on the obtained measured feedback value, and selects or determines PRACH resource from the obtained PRACH resource group for PRACH transmission;

[0165] ---uplink resource information for transmitting the measured feedback value; for example, when the second measured feedback value is feedback based on data transmission, such as PUCCH and / or PUSCH, the UE transmits the obtained measured feedback value to the network device using the corresponding PUCCH and / or PUSCH resources; wherein,

[0166] ----the corresponding PUCCH and / or PUSCH resources (including time-frequency resources, and / or DMRS resources) may be pre-configured, or obtained by the UE through the configuration information of the network device;

[0167] ----in an implementation, it may be transmitted through UCI on PUSCH;

[0168] ----in an implementation, it may be carried through MAC CE;

[0169] ---corresponding timing configuration information (for example, resources for feeding back the second measured feedback value are not available until the time N4+X2), for example, setting a reference time as the timing of N4 time unit, and feedback will not occur until X2 time units after such timing N4, including selecting the first available PUSCH and PUCCH resource after the timing N4+X2, or the UE does not expect to receive the PUCCH or PUSCH resources configured by the base station within X2 time units after the timing of N4 time unit; wherein the reference time may be one or more of:

[0170] ----ending time unit of the last gDRS occasion measured

[0171] ----ending time unit in a measurement gap (or measurement period, measurement window);

[0172] ----ending time unit of the last gDRS occasion in measurement gap (or measurement period, measurement window)

[0173] ----ending time unit for receiving PDCCH scheduling and configuring PUCCH resource or PUSCH resource

[0174] -Optionally, the UE obtains a third measured value based on the received second gDRS or a signal related to the second gDRS, and performs a beam failure recovery operation based on the obtained third measured value,which includes one or more of:

[0175] --The signal related to the second gDRS may include the second gDRS, or may also include a downlink reference signal transmitted using the same beam as the second gDRS; wherein the signal is transmitted using a same beam as the second gDRS may include at least one of: the signal is quasi co-located (QCL) with antenna port(s) of the second gDRS, the signal is QCLed with time-frequency resource of the second gDRS, the signal has the same QCL source, the same QCL assumption, or the same TCI state, the same resource index, the same spatial filter as the second gDRS;

[0176] --The UE performs a beam failure recovery operation when the obtained third measured value satisfies one or more of the following conditions, including:

[0177] ---when the third measured value is not greater than (or less than) a threshold value

[0178] ---when the number of times where the third measured value is not greater than (or less than) the threshold is greater than or equal to a threshold number of times

[0179] ---when the number of consecutive times where the third measured value is not greater than (or less than) the threshold is greater than or equal to a threshold number of times

[0180] --The beam failure recovery operation comprises one or more of:

[0181] ---The UE determines beam failure and / or activates beam failure recovery procedure;

[0182] ---Optionally, the UE measures a third gDRS and reports the obtained fourth measured feedback value to the base station, where

[0183] ----the third gDRS includes: gDRS configured specifically for beam failure recovery, and / or SSB signals configured in system information (e.g., SSB of initial access, or SSB indicated by SIB1),

[0184] ----optionally, when the DBF mode is enabled for the gDRS specifically configured for beam failure recovery and / or the SSB signal configured in the system information, for example, the gDRS or SSB is transmitted using DBF at the network side, the UE reports the third measured feedback value, the UE may know whether DBF is enabled for the transmission of the gDRS or SSB through system information or informed by the network device otherwise, or the UE may know whether DBF is enabled for the transmission of the gDRS or SSB according to the signal format of the gDRS or SSB, where

[0185] -----the types that may be included for the third measured feedback value are the same as the available types for the first measured feedback value described above, and will not be described again;

[0186] -----the type of third measured feedback value that the UE needs to report may be predefined or obtained by receiving configuration from base station; for example, the actual reported third measured feedback value may not be of the same type as the actual reported first measured feedback value;

[0187] ----Optionally, when the DBF mode is not enabled for the gDRS specifically configured for beam failure recovery and / or the SSB signal configured in the system information, the third measured feedback value fed back and reported by the UE may include one or more gDRS index values and / or SSB index values selected by the UE; in addition, the UE also performs the following operations:

[0188] -----the UE receives the fourth gDRS transmitted by the network device, this operation is similar to the aspects involved in the aforementioned "the UE receives a first gDRS transmitted by, for example a network device (such as a base station, etc.)". For example, the fourth gDRS may be transmitted in DBF, for details, please refer to the previous description and will not be repeated here; optionally, the fourth gDRS is derived from one or more gDRS index values (e.g., SSB index values) selected by the UE that are fed back by the UE, that is, the UE expects the beam (or antenna port) of the fourth gDRS to be quasi-co-located (QCL) with at least one gDRSs of the one or more gDRS index values fed back by the UE through the third measured feedback value, for example, the UE expects the beam or antenna port of the fourth gDRS to be quasi-co-located with at least one of the gDRSs corresponding to the index values of the third gDRS fed back by the UE through the third measured feedback value;

[0189] -----the UE obtains a fifth measured feedback value based on the received fourth gDRS, and reports the fifth measured feedback value to the network device. This operation is the same as all aspects involved in the aforementioned "the UE obtains a first measured feedback value based on the received first gDRS, and reports the first measured feedback value to the network device", and will not be described again.

[0190] -----the UE receives the fifth gDRS transmitted by such as the network device (for example, obtained based on the fifth measured feedback value by the base station etc.); this operation is the same as the aspects involved in the aforementioned " the UE receives the second gDRS transmitted by such as the network device (for example, obtained by the base station, etc., based on the first measured feedback value)" and will not be described again;

[0191] -----the UE obtains the sixth measured feedback value based on the received fifth gDRS, and reports the sixth measured feedback value to the network device; this operation is the same as the aspects involved in the aforementioned " the UE obtains a second measured feedback value based on the received second gDRS, and reports the second measured feedback value to the network device", and will not be described again;

[0192] ----optionally, the UE also feeds back and reports the beam failure recovery request to the network device.

[0193] FIG. 9 shows a schematic structural diagram of a user equipment 900 according to at least one embodiment of the present disclosure. Referring to FIG. 9, the user equipment 900 includes a transceiver 901 and a controller 902. The transceiver 901 is configured to transmit data or signals and to receive data or signals. The controller 902 is coupled with the transceiver 901 and configured to perform control such that the user equipment 900 performs a method according to an embodiment of the present disclosure. In an implementation, the user equipment 900 may also include a memory (not shown) on which computer-executable instructions are stored. When the instructions are executed by the controller 902, the user equipment 900 may perform at least one method corresponding to the above-mentioned embodiments of the present disclosure.

[0194] FIG. 10 shows a schematic structural diagram of a base station 1000 according to at least one embodiment of the present disclosure. Referring to FIG. 10, the base station 1000 includes a transceiver 1001 and a controller 1002. The transceiver 1001 is configured to transmit data or signals and to receive data or signals. The controller 1002 is coupled with the transceiver 1001 and configured to perform control such that the base station 1000 performs a method according to an embodiment of the present disclosure. In an implementation, the base station 1000 may also include a memory (not shown), on which computer-executable instructions are stored. When the instructions are executed by the controller 1002, the base station 1000 may perform at least one method corresponding to the above embodiments of the present disclosure.

[0195] FIG. 11 is a block diagram of a terminal or user equipment (UE) 1100 according to an embodiment of the disclosure.

[0196] The terminal is an electronic device capable of wireless communication, may include a User Equipment (UE), a portable phone, a smartphone, a tablet, an Internet of things (IoT) device, etc., having various form factors, and may perform wireless communication with a base station (BS) through a wireless channel.

[0197] Referring to FIG. 11, the UE 1100 may include at least one transceiver (hereinafter, referred to as simply “transceiver”) 1101, at least one processor (hereinafter, referred to as simply “processor”) 1102, and at least one memory (hereinafter, referred to as simply “memory”) 1103. According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the transceiver 1101, the processor 1102, and the memory 1103 of the UE 1100 may operate. However, components of the UE 1100 are not limited to the exemplary components illustrated in FIG. 11. In another embodiment, the UE 1100 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in some embodiments, any combination of the transceiver 1101, the processor 1102, or the memory 1103 may be integrated in the form of one component.

[0198] The transceiver 1101 may be a communication circuit or communication circuitry that enables the UE 1100 to perform wireless communication with a node or an entity of a network. For example, the transceiver 1101 may enable the UE 1100 to transmit or receive a signal to or from a BS through cellular communication, or to transmit or receive a signal to or from another UE through cellular communication. For example, the transceiver 1101 may support at least one of various cellular communication technologies including 3rd generation (3G), 4th generation (4G), long term evolution (LTE), 5th generation (5G) NR, 6th generation (6G), and various cellular wireless communication technologies supported by the transceiver (1101) may include all subsequent generations of evolved wireless communications.

[0199] According to an embodiment, the UE 1100 may include a plurality of transceivers. For example, in the case of supporting evolved-universal terrestrial radio access-new radio (E-UTRA-NR) sual connectivity (EN-DC), the UE 1100 may include a first transceiver supporting the 4G LTE wireless communication and a second transceiver supporting the 5G NR wireless communication. According to another embodiment, in the case of supporting NR-dual connectivity (NR-DC), the UE 1100 may include a plurality of transceivers supporting the 5G NR wireless communication. According to still another embodiment, in the case of supporting near field wireless communication, the UE 1100 may separately include a transceiver supporting at least one standard in the group of wireless communication protocol standards as defined in the protocol standards for Bluetooth®, wireless local area network (WLAN) network (including institute of electrical and electronics engineers (IEEE) 802.11-2016 standard or its amendments, e.g., 802.11ah, 802.11ad, 802.11ay, 802.11ax, 802.11az, 802.11ba, and 802.11be, without being limited thereto).

[0200] According to an embodiment, the transceiver 1101 may include various circuit structures used to transmit or receive signals to or from a BS through a wireless channel. The signals may include control information and data. For example, the transceiver 1101 may include a radio frequency (RF) transmitter for up-converting and amplifying the frequency of a transmitted signal and an RF receiver for low-noise-amplifying a received signal and down-converting the frequency thereof. The transceiver 1101 may output a signal received through a wireless channel to the processor 1102 and may transmit, through a wireless channel, a signal output from the processor 1102.

[0201] The processor 1102 may control general operations of the UE 1100 according to embodiments of the disclosure. The processor 1102 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 1102 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 1103, individually, collectively or in any combination thereof. Further, the processor 1102 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme.

[0202] The processor 1102 may be electrically, operatively, or communicatively coupled to the transceiver 1101 to control the transceiver 1101.

[0203] The processor 1102 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. For example, the processor 1102 may include a communication processor (CP) configured to control communication operations and an application processor (AP) configured to control execution of an upper layer (for example, an application layer) . In a specific embodiment, at least a part of the processor 1102 may be included in one chip and the other part of the processor 1102 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the transceiver 1101 or the memory 1103.

[0204] The processor 1102 may perform or control or cause an operation of the UE 1100 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 1102 may control operations of the UE 1100 for processing a downlink signal received from a BS or generating and transmitting an uplink signal to a BS. To this end, the processor 1102 may execute a computer program, codes, or instructions stored in the memory 1103, so as to control other components of the UE 1100 to enable execution of various operations.

[0205] The memory 1103 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 1103 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0206] The memory 1103 may be electrically, operatively, or communicatively coupled to the processor 1102 and may be accessed by the processor 1102.

[0207] The memory 1103 may store a computer program, codes, or instructions executable by the processor 1102. According to an embodiment, a computer program, codes, or instructions executable by the processor 1102 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 1103, the processor 1102 may perform various functions according to an embodiment of the disclosure.

[0208] According to an embodiment of the disclosure, operations of the UE 1100 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 1103 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0209] FIG. 12 is a block diagram of a base station (BS) 1200 according to an embodiment of the disclosure.

[0210] The BS 1200 may perform wireless communication with at least one user equipment (UE) located within the area of the BS 1200 through a wireless channel.

[0211] Referring to FIG. 12, the BS 1200 may include at least one transceiver (hereinafter, referred to as simply “transceiver”) 1201, at least one processor (hereinafter, referred to as simply “processor”) 1202, and at least one memory (hereinafter, referred to as simply “memory”) 1203. According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the transceiver 1201, the processor 1202, and the memory 1203 of the BS 1200 may operate. However, components of the BS 1200 are not limited to the exemplary components illustrated in FIG. 12. In another embodiment, the BS 1200 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in some embodiments, any combination of the transceiver 1201, the processor 1202, or the memory 1203 may be integrated in the form of one component.

[0212] The transceiver 1201 may be a communication circuit or communication circuitry that enables the BS 1200 to perform wireless communication with a node or an entity of a network. For example, the transceiver 1201 may enable the BS 1200 to transmit or receive a signal to or from the UE X00 through cellular communication, or to transmit or receive a signal to or from another network entity through wireless communication. For example, the transceiver 1201 may support various cellular communication technologies including 3rd generation (3G), 4th generation (4G), long term evolution (LTE), 5th generation (5G) NR, 6th generation (6G), and various cellular wireless communication technologies supported by the transceiver (1201) may include all subsequent generations of evolved wireless communications.. According to an embodiment, the transceiver 1201 may include various circuit structures used to transmit or receive signals to or from a UE through a wireless channel. The signals may include control information and data. For example, the transceiver 1201 may include a radio frequency (RF) transmitter for up-converting and amplifying the frequency of a transmitted signal and an RF receiver for low-noise-amplifying a received signal and down-converting the frequency thereof. The transceiver 1201 may output a signal received through a wireless channel to the processor 1202 and may transmit, through a wireless channel, a signal output from the processor 1202.

[0213] Meanwhile, according to an embodiment of the present disclosure, the BS 1200 may perform communication with a node or an entity of a network through wired or wireless communication. For example, the BS 1200 may perform wired or wireless communication with an adjacent BS, or a node or an entity of a core network through a backhaul network. Although not illustrated in FIG. 12, when the BS 1200 performs wired communication, the BS 1200 may further include a separate network interface for wired communication in addition to the transceiver 1201. The network interface may be referred to as network interface circuitry or communication interface circuitry.

[0214] The processor 1202 may control general operations of the BS 1200 according to embodiments of the disclosure. The processor 1202 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 1202 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 1203, individually, collectively or in any combination thereof. Further, the processor 1202 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme.

[0215] The processor 1202 may be electrically, operatively, or communicatively coupled to the transceiver 1201 to control the transceiver 1201.

[0216] The processor 1202 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. In a specific embodiment, at least a part of the processor 1202 may be included in one chip and the other part of the processor 1202 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the transceiver 1201 or the memory 1203.

[0217] The processor 1202 may perform or control or cause an operation of the BS 1200 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 1202 may control operations of the BS 1200 for generating and transmitting a downlink signal to a UE or processing an uplink signal received from a UE. Otherwise, the BS 1200 may transmit or receive a signal to or from a neighboring BS, transfer a signal received from a UE to an upper node of the network, or transmit a signal transferred from an upper node of the network to a UE. To this end, the processor 1202 may execute a computer program, codes, or instructions stored in the memory 1203, so as to control other components of the BS 1200 to enable execution of various operations.

[0218] The memory 1203 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 1203 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0219] The memory 1203 may be electrically, operatively, or communicatively coupled to the processor 1202 and may be accessed by the processor 1202.

[0220] The memory 1203 may store a computer program, codes, or instructions executable by the processor 1202. According to an embodiment, a computer program, codes, or instructions executable by the processor 1202 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 1203, the processor 1202 may perform various functions according to an embodiment of the disclosure.

[0221] According to an embodiment of the disclosure, operations of the BS 1200 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 1203 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0222] The UE or the base station may perform various communication procedures related to the control plane or the user plane by cooperating with one or more network entities based on wireless communication. For example, the UE may communicate with network entity such as an Access and Mobility Management Function (AMF) or a Session Management Function (SMF) via the base station, or the base station may perform at least one communication procedure by directly transmitting and receiving signals to / from, or relaying signals between, the network entities.

[0223] The structure of the above-described network entity will be described in more detail with reference to the drawings.

[0224] FIG. 13 is a block diagram of a network entity 1300 according to an embodiment of the disclosure.

[0225] The network entity 1300 may include an entity (apparatus, device, or server, etc.) that performs one or more network functions (NFs) or a part of a network function constituting a core network (e.g., a 5th generation (5G) core (5GC)) in a communication system. In this case, multiple NFs may be implemented within a single network entity, or a single NF may be distributed and implemented across a plurality of network entities. In addition, when an NF is implemented within the network entity, the NF may be implemented in the form of software, and in such a case, a program for operating the NF may be stored in memory of the network entity 1300.

[0226] A single NF may be implemented by one or more instances, which may be deployed on the same network entity or distributed across multiple network entities to operate. The instance may be a software unit that logically executes a specific network function, and may be implemented in a form that is decoupled from physical hardware resources. Further, one or more NFs may be implemented in the form of one network slice to operate to satisfy specifications required by a particular service.

[0227] The NF may include at least one of an access and mobility management function (AMF), a session management function (SMF), a local session management function (L-SMF), a user plane function (UPF), a local user plane function (L-UPF), a policy control function (PCF), a unified data management (UDM), a unified data repository (UDR), a network exposure function (NEF), a network repository function (NRF), an application function (AF), a network slice selection function (NSSF), a network data analytics function (NWDAF), a network slice admission control function (NSACF), an authentication server function (AUSF), or a data network (DN).

[0228] Referring to FIG. 13, the network entity 1300 may include at least one network interface 1301, at least one processor 1302 (hereinafter, “processor”), and at least one memory 1303 (hereinafter, “memory”). As described above, a NF may be implemented in the form of a physical device such as the network entity 1300, or may be virtualized and executed in the form of an instance. When implemented as an instance, the NF need not necessarily include physical components as illustrated in FIG. 13. In such a case, the instance may be logically represented as comprising one or more logical functional elements.

[0229] According to at least one or a combination of methods corresponding to the embodiments described in the present disclosure, the network interface 1301, the processor 1302, and the memory 1303 of the network entity 1300 may operate. However, components of the network entity 1300 are not limited to the exemplary components illustrated in FIG. 13. In another embodiment, the network entity 1300 may further include additional components in addition to the above-mentioned components, or some components may be omitted. Further, in an embodiment, the network interface 1301, the processor 1302, or the memory 1303 may be integrated in the form of one component.

[0230] The network interface 1301 is a collective term for a transmitter part of the network entity 1300 and a receiver part of the network entity 1300, and may be a communication circuit for transmitting or receiving a signal to or from a user equipment (UE), a base station (BS), or another network entity. Here, the communication circuit may include both a communication circuit for wireless communication and a communication circuit for a wired communication. For example, the network interface 1301 may include a circuit, logic, hardware, etc., configured to exchange a control plane message or a user plane message with a UE, a BS, or other core network entities through wireless communication or wired communication. The network interface 1301 may operate using various protocols (e.g., non-access stratum (NAS) protocol). The network interface 1301 may also be referred to, for convenience of description or depending on implementation, as communication circuitry, network interface circuitry, or a communication interface circuitry.

[0231] The processor 1302 may control general operations of the network entity 1300 according to embodiments of the disclosure. The processor 1302 may be implemented by one or more integrated circuit (or circuitry) (IC) chips and may execute various data processings. The processor 1302 may include at least one electric circuit, and may execute instructions (or a program, codes, data, etc.) stored in the memory 1303, individually, collectively or in any combination thereof. Further, the processor 1302 may include a single-core processor or multi-core processor, and may include a processor assembly including a plurality of processing circuits (circuitry) according to a specific implementation scheme. Further, it should be noted that, according to another embodiment, in a case where NF is implemented in the form of an instance, the network function may be not necessarily configured by physical hardware.

[0232] According to an embodiment, the processor 1302 may be electrically, operatively, or communicatively coupled to the network interface 1301 to control the network interface 1301.

[0233] The processor 1302 may include at least one processor (or processing circuitry), and the at least one processor may perform the following operations individually, collectively or in any combination thereof. In a specific embodiment, at least a part of the processor 1302 may be included in one chip and the other part of the processor 1302 may be included in another chip. Otherwise, at least one processor may be included in another component, for example, the network interface 1301 or the memory 1303.

[0234] The processor 1302 may perform or control or cause an operation of the network entity 1300 for executing at least one or a combination of methods according to embodiments of the disclosure. For example, the processor 1302 may control operations of the network entity 1300 for exchanging a control plane message or a user plane message with a UE, a BS, or other core network entities through wireless or wired communication, using various protocols (e.g., NAS protocol). To this end, the processor 1302 may execute a computer program, codes, or instructions stored in the memory 1303, so as to control other components of the network entity 1300 to enable execution of various operations.

[0235] The memory 1303 corresponds to a hardware storage device capable of temporarily or permanently storing information and may include one or more storage media. For example, the memory 1303 may include a memory assembly including one or more storage media. For example, the one or more storage media may include permanent memory, such as a hard drive, flash memory, or read-only memory (ROM), semipermanent memory, such as random access memory (RAM), cache memory, or a combination thereof.

[0236] The memory 1303 may be electrically, operatively, or communicatively coupled to the processor 1302 and may be accessed by the processor 1302.

[0237] The memory 1303 may store a computer program, codes, or instructions executable by the processor 1302. According to an embodiment, a computer program, codes, or instructions executable by the processor 1302 may be either stored in a single memory device or separated and distributedly stored in two or more memory devices. By executing the instructions stored in the memory 1303, the processor 1302 may perform various functions according to an embodiment of the disclosure.

[0238] According to an embodiment of the disclosure, operations of the network entity 1300 may be caused to be performed based on execution of instructions (or a computer program or codes) stored in the memory 1303 by at least one processor (or processing circuitry) configured to execute the same individually, collectively, or in any combination thereof, based on processing circuitry that is not configured to execute instructions, and / or based on components of processing circuitry that is not configured to execute instructions.

[0239] According to an embodiment of the present disclosure, there is provided a method performed by a user equipment (UE) in a communication system, comprising: receiving first configuration information from a network device, the first configuration information including configuration information related to a first downlink reference signal, wherein the first downlink reference signal includes multiple signals and / or multiple sequences, and the configuration information related to the first downlink reference signal includes first format configuration information associated with a format of the first downlink reference signal, based on a measurement result on the multiple signals and / or the multiple sequences, transmitting first information to the network device, wherein the first information corresponds to the multiple signals and / or multiple sequences; receiving second configuration information from the network device, the second configuration information including configuration information related to a second downlink reference signal; transmitting second information to the network device based on a measurement result of the second downlink reference signal, wherein the second information includes channel state information (CSI) associated with the second downlink reference signal; performing communication with the network device based on related information of a beam corresponding to the second downlink reference signal.

[0240] In an implementation, the related information of a beam corresponding to the second downlink reference signal includes at least one of: spatial filter, quasi-co-located (QCL) antenna port, QCL time-frequency resource, QCL source, QCL assumption, TCI state, resource index.

[0241] In an implementation, the method further comprises: the UE receiving information indicating whether the network device enables a first beam mode from the network device, or the UE determining whether the network device enables the first beam mode based on the first format configuration information, wherein the first information corresponds to the multiple signals and / or multiple sequences, in case that the first beam mode is enabled.

[0242] In an implementation, the first format configuration information includes configuration information related to at least one of the following formats: a first format, in which a reference signal includes N1 sequences or N1 repetitions of a sequence in time domain; a second format, in which a reference signal includes N1 signals or N1 repetitions of a signal in time domain; a third format, in which a reference signal includes N1 sequences or N1 repetitions of a sequence in frequency domain; a fourth format, in which a reference signal includes N1+M1 signals / sequences or N1+M1 repetitions of a signal / sequence in time domain, and the first N1 signals / sequences or repetitions are related to a number of signals received by the UE and the remaining M1 signals / sequences or repetitions are related to a number of transmit beams of the network device, wherein, N1 and M1 are positive integers.

[0243] In an implementation, the N1 sequences or N1 repetitions of a sequence, N1 signals or N1 repetitions of a signal, or N1+M1 sequences or N1+M1 repetitions of a sequence are consecutive or adjacent in time domain or frequency domain, or there is a gap between two adjacent sequences, signals, or repetitions among the N1 sequences or N1 repetitions of a sequence, the N1 signals or N1 repetitions of a signal, or the N1+M1 sequences or N1+M1 repetitions of a sequence in time domain or frequency domain.

[0244] In an implementation, the second configuration information includes second format configuration information of the second downlink reference signal, the second format configuration information indicates that a format of the second reference signal is the same as a format of the first reference signal, or the second format configuration information includes configuration information of at least one format among the first format, the second format, the third format, and the fourth format.

[0245] In an implementation, the method further comprises: the UE requesting the network device for enabling to receive the second downlink reference signal in the first beam mode.

[0246] In an implementation, the first configuration information further includes information related to transmit power of the first reference signal, wherein the information related to transmit power of the first reference signal includes at least one of: transmit power information of the first reference signal, difference between transmit power of the first reference signal and transmit power of SSB selected by the UE.

[0247] In an implementation, the second configuration information further includes information related to transmit power of the second reference signal, wherein the information related to transmit power of the second reference signal includes at least one of: transmit power information of the second reference signal, difference between transmit power of the second reference signal and transmit power of SSB associated with the UE, difference between transmit power of the second reference signal and transmit power of the first reference signal, and information indicating that transmit power of the second reference signal is the same as transmit power of the first reference signal.

[0248] In an implementation, the first information includes at least one of: a measured value of the first downlink reference signal, ratio of measured values of multiple signals and / or multiple sequences included in the first downlink reference signal, an angle deviation value, and information related to a desired beam.

[0249] In an implementation, the first configuration information further includes first resource configuration information for transmitting the first information, and / or the second configuration information further includes second resource configuration information for transmitting the second information.

[0250] In an implementation, the first resource configuration information includes at least one of: information for determining PRACH resource corresponding to the first information, uplink resource information, and timing configuration information, the second resource configuration information includes at least one of: information for determining PRACH resource corresponding to the second information, uplink resource information, and timing configuration information.

[0251] In an implementation, the timing configuration information indicates that there is a resource for transmitting the first information or the second information after X time units after a reference time unit, where X is a positive integer, the reference time unit includes at least one of: an ending time unit of an occasion of the first downlink reference signal or the second downlink reference signal; an ending time unit of a measurement gap, a measurement period, or a measurement window; an ending time unit of a last occasion of the first downlink reference signal or the second downlink reference signal in a measurement gap, a measurement period, or a measurement window; an ending time unit of a PDCCH scheduling the uplink resource.

[0252] In an implementation, transmitting the first information or transmitting the second information comprises: transmitting the first information or the second information through PRACH resource corresponding to the first information or the second information respectively; transmitting the first information or the second information through predefined uplink resource; or transmitting the first information or the second information through uplink resource based on the first resource configuration information or the second resource configuration information.

[0253] In an implementation, transmitting the first information or the second information through the uplink resource comprises: transmitting the first information or the second information through UCI on the uplink resource or through MAC CE.

[0254] In an implementation, the method further comprises: obtaining a third measured value based on a signal related to the second downlink reference signal; performing an operation related to beam failure recovery based on the third measured value and a first condition, wherein the signal related to the second downlink reference signal includes the second downlink reference signal or a downlink reference signal transmitted using a same beam as the second downlink reference signal.

[0255] In an implementation, the first condition includes at least one of: the third measured value is not greater than a first threshold; a number of times where the third measured value is not greater than the first threshold is not less than a second threshold; a number of consecutive times where the third measured value is not greater than the first threshold value is not less than a third threshold value.

[0256] In an implementation, the performing an operation related to beam failure recovery based on the third measured value and a first condition comprises: determining a beam failure based on the first condition being satisfied; measuring a third downlink reference signal to obtain fourth information related to a measurement result of the third downlink reference signal, wherein, if the first beam mode is enabled for transmission of the third downlink reference signal, the fourth information corresponds to multiple signals and / or multiple sequences included in the third downlink reference signal.

[0257] In an implementation, if the first beam mode is not enabled for transmission of the third downlink reference signal, the fourth information includes at least one third downlink reference signal index selected by the UE, and the performing an operation related to beam failure recovery further comprises performing a beam management procedure based on the first beam mode.

[0258] In an implementation, the beam management procedure based on the first beam mode comprises: receiving a fourth downlink reference signal including multiple signals and / or multiple sequences from the network device; transmitting fifth information to the network device based on a measurement result of the multiple signals and / or multiple sequences, wherein the fifth information corresponds to the multiple signals and / or multiple sequences, and wherein the UE expects the fourth downlink reference signal to be quasi co-located with the at least one third downlink reference signal; based on a measurement result of a fifth downlink reference signal received from the network device, transmitting sixth information to the network device, the sixth information including channel state information (CSI) associated with the fifth downlink reference signal; performing communication with the network device based on related information of a beam corresponding to the fifth downlink reference signal.

[0259] According to an embodiment of the present disclosure, there is provided a method performed by a network device in a communication system, comprising: transmitting first configuration information to a user equipment (UE), the first configuration information including configuration information related to a first downlink reference signal, wherein the first downlink reference signal includes multiple signals and / or multiple sequences, and the configuration information related to the first downlink reference signal includes first format configuration information associated with a format of the first downlink reference signal; transmitting the multiple signals and / or multiple sequences included in the first downlink reference signal to the UE; receiving first information from the UE, the first information corresponding to the multiple signals and / or multiple sequences; transmitting second configuration information to the UE, the second configuration information including configuration information related to a second downlink reference signal; transmitting the second downlink reference signal to the UE; receiving second information from the UE, the second information including channel state information (CSI) associated with the second downlink reference signal; performing communication with the UE based on related information of a beam corresponding to the second reference signal.

[0260] In an implementation, the related information of a beam corresponding to the second downlink reference signal includes at least one of: spatial filter, quasi-co-located (QCL) antenna port, QCLed time-frequency resource, QCL source, QCL assumption, TCI state, resource index.

[0261] In an implementation, the method further comprises: transmitting, to the UE, information indicating whether the network device enables a first beam mode, wherein the first information corresponds to the multiple signals and / or multiple sequences in case that the first beam mode is enabled.

[0262] In an implementation, the first format configuration information includes configuration information related to at least one of the following formats: a first format, in which a reference signal includes N1 sequences or N1 repetitions of a sequence in time domain; a second format, in which a reference signal includes N1 signals or N1 repetitions of a signal in time domain; a third format, in which a reference signal includes N1 sequences or N1 repetitions of a sequence in frequency domain; a fourth format, in which a reference signal includes N1+M1 signals / sequences or N1+M1 repetitions of a signal / sequence in time domain, and the first N1 signals / sequences or repetitions are related to a number of signals received by the UE and the remaining M1 signals / sequences or repetitions are related to a number of transmit beams of the network device, wherein, N1 and M1 are positive integers.

[0263] In an implementation, the N1 sequences or N1 repetitions of a sequence, N1 signals or N1 repetitions of a signal, or N1+M1 sequences or N1+M1 repetitions of a sequence are consecutive or adjacent in time domain or frequency domain, or there is a gap between two adjacent sequences, signals, or repetitions among the N1 sequences or N1 repetitions of a sequence, the N1 signals or N1 repetitions of a signal, or the N1+M1 sequences or N1+M1 repetitions of a sequence in time domain or frequency domain.

[0264] In an implementation, the second configuration information includes second format configuration information of the second downlink reference signal, the second format configuration information indicates that a format of the second reference signal is the same as a format of the first reference signal, or the second format configuration information includes configuration information of at least one format among the first format, the second format, the third format, and the fourth format.

[0265] In an implementation, the method further comprises: receiving information from the UE requesting to enable to receive the second downlink reference signal in the first beam mode.

[0266] In an implementation, the first configuration information further includes information related to transmit power of the first reference signal, wherein the information related to transmit power of the first reference signal includes: transmit power information of the first reference signal, or difference between transmit power of the first reference signal and transmit power of SSB selected by the UE.

[0267] In an implementation, the second configuration information further includes information related to transmit power of the second reference signal, wherein the information related to transmit power of the second reference signal includes at least one of: transmit power information of the second reference signal, difference between transmit power of the second reference signal and transmit power of SSB associated with the UE, difference between transmit power of the second reference signal and transmit power of the first reference signal, and information indicating that transmit power of the second reference signal is the same as transmit power of the first reference signal.

[0268] In an implementation, the first information includes at least one of: a measured value of the first downlink reference signal, ratio of measured values of multiple signals and / or multiple sequences included in the first downlink reference signal, an angle deviation value, and information related to a desired beam.

[0269] In an implementation, the first configuration information further includes first resource configuration information for transmitting the first information, and the first information is transmitted using resource based on the first resource configuration information, and / or the second configuration information further includes second resource configuration information for transmitting the second information, and the second information is transmitted using resource based on the second resource configuration information.

[0270] In an implementation, the first resource configuration information includes at least one of: information for determining PRACH resource corresponding to the first information, uplink resource information, and timing configuration information, the second resource configuration information includes at least one of: information for determining PRACH resource corresponding to the second information, uplink resource information, and timing configuration information.

[0271] In an implementation, the timing configuration information indicates that there is resource for transmitting the first information or the second information after X time units after a reference time unit, where X is a positive integer, the reference time unit includes at least one of: an ending time unit of an occasion of the first downlink reference signal or the second downlink reference signal; an ending time unit of a measurement gap, a measurement period, or a measurement window; an ending time unit of a last occasion of the first downlink reference signal or the second downlink reference signal in a measurement gap, a measurement period, or a measurement window; an ending time unit of a PDCCH scheduling the uplink resource.

[0272] In an implementation, receiving the first information or receiving the second information comprises: receiving the first information or the second information through PRACH resource corresponding to the first information or the second information respectively; receiving the first information or the second information through predefined uplink resource; or receiving the first information or the second information through uplink resource based on the first resource configuration information or the second resource configuration information.

[0273] In an implementation, the method further comprises: transmitting a third downlink reference signal to the UE; receiving fourth information related to measurement of the third downlink reference signal from the UE.

[0274] In an implementation, if the first beam mode is enabled for transmission of the third downlink reference signal, the fourth information corresponds to multiple signals and / or multiple sequences included in the third downlink reference signal, if the first beam mode is not enabled for transmission of the third downlink reference signal, the fourth information includes at least one third downlink reference signal index selected by the UE, and the method further comprises the network device performing a beam management procedure based on the first beam mode according to the at least one third downlink reference signal index.

[0275] In an implementation, the beam management procedure based on the first beam mode comprises: transmitting a fourth downlink reference signal including multiple signals and / or multiple sequences to the UE in the first beam mode, the fourth downlink reference signal being quasi co-located with the at least one third downlink reference signal; receiving fifth information from the UE, the fifth information corresponding to the multiple signals and / or multiple sequences; transmitting a fifth downlink reference signal to the UE; receiving sixth information from the UE, the sixth information including channel state information (CSI) associated with the fifth downlink reference signal; performing communication with the UE based on related information of a beam corresponding to the fifth downlink reference signal.

[0276] According to an embodiment of the present disclosure, there is provided a user equipment UE, comprising: a transceiver configured to transmit and / or receive signals; a controller configured to control the UE to perform a method according to an embodiment of the present disclosure.

[0277] According to an embodiment of the present disclosure, there is provided a network device, comprising: a transceiver configured to transmit and / or receive signals; a controller configured to control the network device to perform a method according to an embodiment of the present disclosure.

[0278] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0279] Those skilled in the art will appreciate that the present invention includes reference to devices for performing one or more of the operations described herein. These devices may be specially designed and manufactured for the required purposes, or they may comprise known devices found in general purpose computers. These devices have computer programs stored therein that are selectively activated or reconfigured. Such a computer program may be stored in a device (e.g., computer) readable medium including, but not limited to, any type of disk including floppy disks, hard disks, optical disks, CD-ROMs, and magnetic-optical disks, ROM (Read-Only Memory, Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or optical card. That is, a readable medium includes any medium that stores or transmits information in a form readable by a device (e.g., a computer).

[0280] It will be understood by those skilled in the art that each block of the structural diagrams and / or block diagrams and / or flow diagrams, and combinations of blocks in the structural diagrams and / or block diagrams and / or flow diagrams, may be implemented by computer program instructions. Those skilled in the art can understand that these computer program instructions may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing method for implementation, so that the scheme specified in the structural diagrams and / or block diagrams and / or flow diagrams disclosed in the present invention may be executed by the processor of the computer or other programmable data processing method.

[0281] Those skilled in the art can understand that the steps, measures, and solutions in the various operations, methods, and processes that have been discussed in the present invention may be alternated, changed, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes that have been discussed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted. Furthermore, the steps, measures, and solutions in the various operations, methods, and processes disclosed in the present invention in the prior art can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0282] The above are only some embodiments of the present invention. It should be noted that those of ordinary skill in the art can also make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications are also It should be regarded as the protection scope of the present invention.

[0283] Meanwhile, although specific embodiments of the present disclosure have been described in detail, various modifications may be made without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be defined by the claims and equivalents thereof.

Claims

1.A method performed by a user equipment (UE) in a communication system, comprising:receiving first configuration information from a network device, the first configuration information including configuration information related to a first downlink reference signal, wherein the first downlink reference signal includes multiple signals and / or multiple sequences, and the configuration information related to the first downlink reference signal includes first format configuration information associated with a format of the first downlink reference signal,based on a measurement result of the multiple signals and / or the multiple sequences, transmitting first information to the network device, wherein the first information corresponds to the multiple signals and / or multiple sequences;receiving second configuration information from the network device, the second configuration information including configuration information related to a second downlink reference signal;transmitting second information to the network device based on a measurement result of the second downlink reference signal, wherein the second information includes channel state information (CSI) associated with the second downlink reference signal;performing communication with the network device based on related information of a beam corresponding to the second downlink reference signal.2.The method of claim 1, wherein the related information of a beam corresponding to the second downlink reference signal includes at least one of: spatial filter, quasi-co-located (QCL) antenna port, QCLed time-frequency resource, QCL source, QCL assumption, TCI state, resource index.3.The method of claim 1, further comprising:the UE receiving information indicating whether the network device enables a first beam mode from the network device, or the UE determining whether the network device enables the first beam mode based on the first format configuration information, wherein the first information corresponds to the multiple signals and / or multiple sequences, in case that the first beam mode is enabled.4.The method of claim 1, wherein the first format configuration information includes configuration information related to at least one of the following formats:a first format, in which a reference signal includes N1 sequences or N1 repetitions of a sequence in time domain;a second format, in which a reference signal includes N1 signals or N1 repetitions of a signal in time domain;a third format, in which a reference signal includes N1 sequences or N1 repetitions of a sequence in frequency domain;a fourth format, in which a reference signal includes N1+M1 signals / sequences or N1+M1 repetitions of a signal / sequence in time domain, and the first N1 signals / sequences or repetitions are related to a number of signals received by the UE and the remaining M1 signals / sequences or repetitions are related to a number of transmit beams of the network device,wherein, N1 and M1 are positive integers.5.The method of claim 4, wherein the second configuration information includes second format configuration information of the second downlink reference signal,the second format configuration information indicates that a format of the second reference signal is the same as a format of the first reference signal, orthe second format configuration information includes configuration information of at least one format among the first format, the second format, the third format, and the fourth format.6.The method of claim 1, wherein the first configuration information further includes information related to transmit power of the first reference signal,wherein the information related to transmit power of the first reference signal includes at least one of: transmit power information of the first reference signal, difference between transmit power of the first reference signal and transmit power of SSB selected by the UE.7.The method of claim 6, wherein the second configuration information further includes information related to transmit power of the second reference signal,wherein the information related to transmit power of the second reference signal includes at least one of: transmit power information of the second reference signal, difference between transmit power of the second reference signal and transmit power of SSB associated with the UE, difference between transmit power of the second reference signal and transmit power of the first reference signal, and information indicating that transmit power of the second reference signal is the same as transmit power of the first reference signal.8.The method of claim 1, wherein the first information includes at least one of: a measured value of the first downlink reference signal, ratio of measured values of multiple signals and / or multiple sequences included in the first downlink reference signal, an angle deviation value, and information related to a desired beam.9.The method of claim 1, wherein the first configuration information further includes first resource configuration information for transmitting the first information, and / orthe second configuration information further includes second resource configuration information for transmitting the second information,wherein the first resource configuration information includes at least one of: information for determining PRACH resource corresponding to the first information, uplink resource information, and timing configuration information,the second resource configuration information includes at least one of: information for determining PRACH resource corresponding to the second information, uplink resource information, and timing configuration information.10.The method of claims 1, further comprising:obtaining a third measured value based on a signal related to the second downlink reference signal;performing an operation related to beam failure recovery based on the third measured value and a first condition,wherein the signal related to the second downlink reference signal includes the second downlink reference signal or a downlink reference signal transmitted using a same beam as the second downlink reference signal.11.The method of claim 10, wherein the first condition includes at least one of:the third measured value is not greater than a first threshold;a number of times where the third measured value is not greater than the first threshold is not less than a second threshold;a number of consecutive times where the third measured value is not greater than the first threshold value is not less than a third threshold value.12.The method of claim 10, wherein the performing an operation related to beam failure recovery based on the third measured value and a first condition comprises:determining a beam failure based on the first condition being satisfied;measuring a third downlink reference signal to obtain fourth information related to a measurement result of the third downlink reference signal,wherein, if the first beam mode is enabled for transmission of the third downlink reference signal, the fourth information corresponds to multiple signals and / or multiple sequences included in the third downlink reference signal.13.A method performed by a network device in a communication system, comprising:transmitting first configuration information to a user equipment (UE), the first configuration information including configuration information related to a first downlink reference signal, wherein the first downlink reference signal includes multiple signals and / or multiple sequences, and the configuration information related to the first downlink reference signal includes first format configuration information associated with a format of the first downlink reference signal;transmitting the multiple signals and / or multiple sequences included in the first downlink reference signal to the UE;receiving first information from the UE, the first information corresponding to the multiple signals and / or multiple sequences;transmitting second configuration information to the UE, the second configuration information including configuration information related to a second downlink reference signal;transmitting the second downlink reference signal to the UE;receiving second information from the UE, the second information including channel state information (CSI) associated with the second downlink reference signal;performing communication with the UE based on related information of a beam corresponding to the second reference signal.14.A user equipment (UE) comprising:a transceiver configured to transmit and / or receive signals;a controller configured to:receive first configuration information from a network device, the first configuration information including configuration information related to a first downlink reference signal, wherein the first downlink reference signal includes multiple signals and / or multiple sequences, and the configuration information related to the first downlink reference signal includes first format configuration information associated with a format of the first downlink reference signal,based on a measurement result of the multiple signals and / or the multiple sequences, transmit first information to the network device, wherein the first information corresponds to the multiple signals and / or multiple sequences;receive second configuration information from the network device, the second configuration information including configuration information related to a second downlink reference signal;transmit second information to the network device based on a measurement result of the second downlink reference signal, wherein the second information includes channel state information (CSI) associated with the second downlink reference signal;perform communication with the network device based on related information of a beam corresponding to the second downlink reference signal.15.A network device, comprising:a transceiver configured to transmit and / or receive signals;a controller configured to:transmit first configuration information to a user equipment (UE), the first configuration information including configuration information related to a first downlink reference signal, wherein the first downlink reference signal includes multiple signals and / or multiple sequences, and the configuration information related to the first downlink reference signal includes first format configuration information associated with a format of the first downlink reference signal;transmit the multiple signals and / or multiple sequences included in the first downlink reference signal to the UE;receive first information from the UE, the first information corresponding to the multiple signals and / or multiple sequences;transmit second configuration information to the UE, the second configuration information including configuration information related to a second downlink reference signal;transmit the second downlink reference signal to the UE;receive second information from the UE, the second information including channel state information (CSI) associated with the second downlink reference signal;perform communication with the UE based on related information of a beam corresponding to the second reference signal.

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