Method and apparatus for receiving and transmitting information

Abstract

This disclosure relates to 5G or 6G communication systems for supporting higher data rates than 4G communication systems such as Long Term Evolution (LTE). This disclosure provides a method and apparatus for receiving and transmitting information; specifically, it provides a method performed by a User Equipment (UE) in a wireless communication system, the method comprising: receiving first random access information for random access, the first random access information indicating a PRACH opportunity for transmitting a Physical Random Access Channel (PRACH); receiving first information indicating K1 reference signals for measurement, K1 being an integer greater than or equal to 1; receiving second information indicating K2 reference signals for prediction, K2 being an integer greater than or equal to 1; and transmitting a PRACH on a first PRACH opportunity associated with the first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on measurements of the K1 reference signals, and the first reference signal is a reference signal among the K1 and / or K2 reference signals.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and more specifically, to methods and apparatus for receiving and transmitting information. Background Technology

[0002] Given the successive generations of wireless communication development, these technologies have primarily been developed for human-oriented services such as voice calls, multimedia services, and data services. With the commercialization of 5th-generation (5G) communication systems, the number of connected devices is expected to grow exponentially. These will increasingly connect to communication networks. Examples of the Internet of Things (IoT) can include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machinery, and factory equipment. Mobile devices are expected to evolve in various forms, such as augmented reality glasses, virtual reality headsets, and holographic devices. Efforts are underway to develop improved 6G communication systems to provide a wide range of services by connecting hundreds of billions of devices and things in the sixth-generation (6G) era.

[0003] The 6G communication system, expected to be commercially available around 2030, will significantly improve upon existing 5G communication systems in all aspects. Its peak speed will reach at least 50 Gbit / s, user experience speed will reach at least 300 Mbit / s, air interface latency will be less than 1 ms, and air interface reliability will reach 10^(-5). In addition to these basic communication indicators, the 6G communication system will also possess sensing capabilities, AI-related capabilities, and better security, interoperability, and sustainability.

[0004] To achieve the aforementioned performance indicators for 6G communication systems, more advanced air interface and network technologies are needed. Currently, the evolution of extreme multiple input multiple output (MIMO) is being considered, including the use of very large-scale antenna arrays, the development and evolution of distributed antenna systems, and the design of MIMO air interface algorithms assisted by artificial intelligence (AI). This technology can achieve higher spectral efficiency, greater coverage, and more precise positioning and sensing capabilities. Furthermore, technologies that contribute to improving high-frequency coverage, including metamaterial-based lenses and antennas, novel antenna architectures, and reconfigurable intelligence surfaces (RIS), also require further evolution and development.

[0005] To meet the new functionalities added to 6G communication systems, it is necessary to develop new technologies in areas such as network energy saving, air interface security, and network security, while also studying the feasibility of converged technologies such as integrated communication and sensing.

[0006] In addition, to improve spectrum efficiency and overall network performance, the following technologies have been developed for 6G communication systems: full-duplex technology to enable uplink and downlink transmissions to use the same frequency resources simultaneously; network technologies that utilize satellites, high-altitude platform stations (HAPS), etc., in a comprehensive manner; improved network architecture to support mobile base stations, etc., and to enable network operation optimization and automation; dynamic spectrum sharing technology based on spectrum usage prediction and conflict avoidance; the use of artificial intelligence (AI) in wireless communication to improve overall network operation by utilizing AI from the design phase of 6G development and internalizing end-to-end AI support functions; and next-generation distributed computing technologies that overcome the computing power limitations of user equipment (UE) by leveraging ultra-high-performance communication and computing resources (such as mobile edge computing (MEC), cloud, etc.) achievable on the network. Furthermore, efforts are continuing to enhance connectivity between devices, optimize networks, promote the software-defined networking of network entities, and increase the openness of wireless communications by designing new protocols to be used in 6G communication systems, developing mechanisms for achieving hardware-based secure environments and secure data use, and developing technologies for maintaining privacy.

[0007] The research and development of 6G communication systems, encompassing hyper-connectivity for both person-to-machine (P2M) and machine-to-machine (M2M) interactions, is expected to deliver the next wave of hyper-connected experiences. Specifically, services such as truly immersive extended reality (XR), high-fidelity mobile holograms, and digital replicas are anticipated to be provided through 6G communication systems. Furthermore, services such as remote surgery for enhanced security and reliability, industrial automation, and emergency response will be available via 6G communication systems, enabling the technology to be applied across a wide range of sectors including industry, healthcare, automotive, and home appliances. Summary of the Invention

[0008] Generally, random access procedures are required to improve the efficiency of UE-base station connection establishment in wireless communication systems. However, how to further enhance the performance related to random access is a problem that needs to be solved.

[0009] One aspect of this disclosure provides a method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving first random access information for random access, the first random access information indicating a PRACH opportunity for transmitting a Physical Random Access Channel (PRACH); receiving first information indicating K1 reference signals for measurement, K1 being an integer greater than or equal to 1; receiving second information indicating K2 reference signals for prediction, K2 being an integer greater than or equal to 1; and transmitting a PRACH on a first PRACH opportunity associated with the first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on the measurement of the K1 reference signals, and the first reference signal is a reference signal among the K1 reference signals and / or the K2 reference signals.

[0010] In the example, the K2 reference signals are associated with the PRACH opportunity based on the first random access information; or, the K2-K1 reference signals, excluding the K1 reference signals, are associated with the PRACH opportunity based on the first random access information.

[0011] In the example, when the K2 reference signals are Synchronization Signals / Physical Broadcast Channel Blocks (SSBs), each of the K2 reference signals or the K2-K1 reference signals is associated with X PRACH opportunities, where X is an integer indicated by the first information.

[0012] In the example, each of the X PRACH opportunities is associated with Y preambles, where Y is an integer indicated by the first information.

[0013] In the example, when the K2 reference signals are Channel State Information Reference Signals (CSI-RS), the index of the PRACH opportunity associated with each of the K2 reference signals or the K2-K1 reference signals is indicated by the first random access information.

[0014] In the example, the index of the preamble associated with each of the K2 reference signals or the K2-K1 reference signals is indicated by the first random access information.

[0015] In the example, the method further includes: receiving second random access information for random access, wherein the K1 reference signals are associated with the PRACH opportunity based on the second random access information.

[0016] In the example, when the K1 reference signals are SSBs, each of the K1 reference signals is associated with X1 PRACH opportunities, where X1 is an integer indicated by the second information.

[0017] In the example, each of the X1 PRACH opportunities is associated with Y1 preambles, where Y1 is an integer indicated by the second information.

[0018] In the example, the preamble used by the PRACH is related to the first reference signal.

[0019] In the example, the first reference signal is at least one of N reference signals, or the first reference signal is at least one of K1 reference signals that is the same as at least one of the N reference signals, and wherein the N reference signals are N predicted reference signals among the K2 reference signals, N is an integer greater than or equal to 1, and N is predefined or indicated by the first random access information.

[0020] In the example, the N reference signals include at least one of the following: the N reference signals with the highest predicted reference signal received power (RSRP) among the K2 reference signals; the N reference signals with predicted RSRP higher than a first threshold among the K2 reference signals; and the N strongest reference signals among the K2 reference signals, wherein the first threshold is predefined, indicated by a base station, or indicated by first random access information.

[0021] In the example, the first reference signal includes at least one of the following: the reference signal with the highest predicted RSRP among the N reference signals; the reference signal with a predicted RSRP higher than a second threshold among the N reference signals; the strongest reference signal among the N reference signals; and the X2 strongest reference signal among the N reference signals, where X2 is an integer greater than or equal to a third threshold and / or less than or equal to a fourth threshold, wherein the second threshold, the third threshold, and the fourth threshold are predefined or indicated by the base station.

[0022] In the example, the first reference signal is at least one of the K3 reference signals among the K1 reference signals, wherein the K3 reference signals are the same as the K3 reference signals among the N reference signals, and K3 is an integer greater than or equal to 1.

[0023] In the example, the first reference signal is the second reference signal among the K3 reference signals out of the K1 reference signals, wherein the reference signal among the K2 reference signals that is the same as the second reference signal is at least one of the following: the reference signal with the highest predicted RSRP among the K3 reference signals out of the N reference signals; the reference signal with a predicted RSRP higher than a fifth threshold among the K3 reference signals out of the N reference signals; the strongest reference signal among the K3 reference signals out of the N reference signals, wherein the fifth threshold is predefined or indicated by the base station.

[0024] In the example, the PRACH is sent when the measured RSRP of at least one of the K1 reference signals is higher than a sixth threshold, wherein the sixth threshold is predefined or indicated by the base station.

[0025] Another aspect of this disclosure provides a method performed by a base station in a wireless communication system, the method comprising: transmitting first random access information for random access, the first random access information indicating a PRACH opportunity for transmitting a Physical Random Access Channel (PRACH); transmitting first information indicating K1 reference signals for measurement, K1 being an integer greater than or equal to 1; transmitting second information indicating K2 reference signals for prediction, K2 being an integer greater than or equal to 1; and receiving a PRACH on a first PRACH opportunity associated with a first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on measurements of the K1 reference signals, and the first reference signal is a reference signal among the K1 reference signals and / or the K2 reference signals.

[0026] In the example, the K2 reference signals are associated with the PRACH opportunity based on the first random access information; or, the K2-K1 reference signals, excluding the K1 reference signals, are associated with the PRACH opportunity based on the first random access information.

[0027] In the example, when the K2 reference signals are Synchronization Signals / Physical Broadcast Channel Blocks (SSBs), each of the K2 reference signals or the K2-K1 reference signals is associated with X PRACH opportunities, where X is an integer indicated by the first information.

[0028] In the example, each of the X PRACH opportunities is associated with Y preambles, where Y is an integer indicated by the first information.

[0029] In the example, when the K2 reference signals are Channel State Information Reference Signals (CSI-RS), the index of the PRACH opportunity associated with each of the K2 reference signals or the K2-K1 reference signals is indicated by the first random access information.

[0030] In the example, the index of the preamble associated with each of the K2 reference signals or the K2-K1 reference signals is indicated by the first random access information.

[0031] In the example, the method further includes: sending second random access information for random access, wherein the K1 reference signals are associated with the PRACH opportunity based on the second random access information.

[0032] In the example, when the K1 reference signals are SSBs, each of the K1 reference signals is associated with X1 PRACH opportunities, where X1 is an integer indicated by the second information.

[0033] In the example, each of the X1 PRACH opportunities is associated with Y1 preambles, where Y1 is an integer indicated by the second information.

[0034] In the example, the preamble used by the PRACH is related to the first reference signal.

[0035] In the example, the first reference signal is at least one of N reference signals, or the first reference signal is at least one of K1 reference signals that is the same as at least one of the N reference signals, and wherein the N reference signals are N predicted reference signals among the K2 reference signals, N is an integer greater than or equal to 1, and N is predefined or indicated by the first random access information.

[0036] In the example, the N reference signals include at least one of the following: the N reference signals with the highest predicted reference signal received power (RSRP) among the K2 reference signals; the N reference signals with predicted RSRP higher than a first threshold among the K2 reference signals; and the N strongest reference signals among the K2 reference signals, wherein the first threshold is predefined, indicated by a base station, or indicated by first random access information.

[0037] In the example, the first reference signal includes at least one of the following: the reference signal with the highest predicted RSRP among the N reference signals; the reference signal with a predicted RSRP higher than a second threshold among the N reference signals; the strongest reference signal among the N reference signals; and the X2 strongest reference signal among the N reference signals, where X2 is an integer greater than or equal to a third threshold and / or less than or equal to a fourth threshold, wherein the second threshold, the third threshold, and the fourth threshold are predefined or indicated by the base station.

[0038] In the example, the first reference signal is at least one of the K3 reference signals among the K1 reference signals, wherein the K3 reference signals are the same as the K3 reference signals among the N reference signals, and K3 is an integer greater than or equal to 1.

[0039] In the example, the first reference signal is the second reference signal among the K3 reference signals out of the K1 reference signals, wherein the reference signal among the K2 reference signals that is the same as the second reference signal is at least one of the following: the reference signal with the highest predicted RSRP among the K3 reference signals out of the N reference signals; the reference signal with a predicted RSRP higher than a fifth threshold among the K3 reference signals out of the N reference signals; the strongest reference signal among the K3 reference signals out of the N reference signals, wherein the fifth threshold is predefined or indicated by the base station.

[0040] In the example, the PRACH is sent when the measured RSRP of at least one of the K1 reference signals is higher than a sixth threshold, wherein the sixth threshold is predefined or indicated by the base station.

[0041] Another aspect of this disclosure provides a user equipment including: a transceiver; and a controller coupled to the transceiver, the controller being configured to perform the methods described above that can be performed by the user equipment.

[0042] Another aspect of this disclosure provides a base station, including: a transceiver; and a controller coupled to the transceiver, the controller being configured to perform the methods described above that can be performed by the base station.

[0043] The method proposed in this application improves the performance of random access, thereby increasing the efficiency of the UE in establishing a connection with the base station. Attached Figure Description

[0044] To gain a more complete understanding of this disclosure and its advantages, reference is now made to the following description in conjunction with the accompanying drawings, wherein like reference numerals denote like components:

[0045] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown;

[0046] Figure 2 An example base station according to an embodiment of the present disclosure is shown;

[0047] Figure 3 An example user equipment according to an embodiment of the present disclosure is shown;

[0048] Figure 4 Method 400 performed by a user equipment (UE) according to various embodiments of the present disclosure is illustrated;

[0049] Figure 5 A method 500 performed by a base station according to various embodiments of the present disclosure is shown;

[0050] Figure 6 The structure 600 of a user equipment according to various embodiments of the present disclosure is shown;

[0051] Figure 7 The structure 700 of a base station according to various embodiments of the present disclosure is shown. Detailed Implementation

[0052] Before proceeding with the following detailed description, it may be advantageous to define certain words and phrases used throughout the patent literature. The term “connection” and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether those elements are physically in contact with each other. The terms “transmit,” “receive,” and “transmit,” and their derivatives encompass both direct and indirect communication. The terms “comprise” and “include,” and their derivatives mean inclusion without limitation. The term “or” is concurrent, meaning both and / or. The phrase “associated with,” and its derivatives mean including, being included in, interconnected with, containing, being contained within, connected to or connected with, coupled to or coupled with, able to communicate with, cooperate with, intertwine, juxtapose, proximate, bound to or bound with, having, possessing attributes, having a relationship with, or having a relationship with, etc. The term “controller” means any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or in a combination of hardware and software and / or firmware. The functionality associated with any particular controller, whether local or remote, can be centralized or distributed. The phrase "at least one" when used to list items means that different combinations of one or more of the listed items can be used, and it is possible that only one item in the list is needed. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C; A and B; A and C; B and C; and only A, only B, and only C. Similarly, the term "set" means one or more. Therefore, a set of items can be a single item or a set of two or more items.

[0053] Furthermore, the various functions described below can be implemented or supported by one or more computer programs, each function being formed by computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, associated data, or portions thereof suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium accessible by a computer, such as read-only memory (ROM), random access memory (RAM), hard disk drive, compact disc (CD), digital video disc (DVD), or any other type of storage. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer-readable media includes media in which data can be permanently stored and media such as rewritable optical discs or erasable memory devices in which data can be stored and later rewritten.

[0054] Definitions for certain other words and phrases are provided throughout this patent document. Those skilled in the art will understand that, in many, if not the most, instances, such definitions apply to both prior and future use of the words and phrases defined in this way.

[0055] The figures and various embodiments included herein, used to illustrate the principles of this disclosure, are merely illustrative and should not be construed in any way as limiting the scope of this disclosure. Furthermore, those skilled in the art will understand that the principles of this disclosure can be implemented in any suitably arranged wireless communication system.

[0056] The following Figures 1 to 3 Various embodiments of this disclosure implemented in wireless communication systems are described. Figures 1 to 3 The description does not imply any physical or architectural limitations on the ways in which different embodiments can be implemented. Different embodiments of this disclosure can be implemented in any suitably arranged communication system.

[0057] Figure 1 An example wireless network according to an embodiment of this disclosure is shown. Figure 1 The embodiments of the wireless network shown are for illustrative purposes only. Other embodiments of the wireless network 100 may be used without departing from the scope of this disclosure.

[0058] like Figure 1As shown, the wireless network includes a base station (next generation nodeB, gNB or gNodeB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130 such as the Internet, Internet Protocol (IP) networks, or other data networks.

[0059] gNB 102 provides wireless broadband access to network 130 to multiple first user equipments (UEs) within coverage area 120 of gNB 102. The multiple first UEs include UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R1); UE 115, which may be located in a second residence (R2); and UE 116, which may be a mobile device (M) such as a cellular phone, wireless laptop, or wireless personal digital assistant (PDA). gNB 103 provides wireless broadband access to network 130 to multiple second UEs within coverage area 125 of gNB 103. The multiple second UEs include UE 115 and UE 116, and subscriber stations (SS, such as UEs) 117, 118, and 119. In some embodiments, one or more of gNBs 101 and 103 may communicate with each other and UE 111116 using existing wireless communication technologies, and one or more of UEs 111 and 119 may communicate directly with each other (e.g., UE 117 and 119) using other existing or proposed wireless communication technologies.

[0060] Depending on the network type, the term "base station" or "BS" can refer to any component (or set of components) configured to provide wireless access to a network, such as a transmit point (TP), transmit-receive point (TRP), enhanced (or "evolved") base station (eNodeB or eNB), 5G base station (gNB), macro cell, femtocell, wireless fidelity (WiFi) access point (AP), or other wireless-capable devices. A base station can provide wireless access according to one or more wireless communication protocols, such as 3GPP 5G new radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE A), high-speed packet access (HSPA), WiFi 802.11a / b / g / n / ac, etc. For convenience, various names for base station type devices and functions may be used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Furthermore, depending on the network type, the term "User Equipment" (UE) can refer to any component such as a mobile station (MS), user station (SS), remote terminal, wireless terminal, receiving point, or user device. For convenience, various names for user equipment type devices and functions may be used interchangeably in this patent document to refer to remote wireless devices that wirelessly access the BS regardless of whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered a fixed device (such as a desktop computer or vending machine).

[0061] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which are shown as roughly circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas such as 120 and 125 associated with the gNB can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the wireless environment associated with natural and man-made obstacles.

[0062] As described in more detail below, one or more of UEs 111 and 119 include circuitry, programming, or a combination thereof. In some embodiments, one or more of gNBs 101 and 103 include circuitry, programming, or a combination thereof.

[0063] although Figure 1 An example of a wireless network is shown, but more can be found on... Figure 1Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102 or 103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. Additionally, gNBs 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.

[0064] Figure 2 An example base station according to an embodiment of the present disclosure is shown. Figure 2 The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 gNBs 101 and 103 can have the same or similar configurations. However, gNBs come in a variety of configurations, and Figure 2 This disclosure is not intended to limit the scope to any particular implementation of gNB.

[0065] like Figure 2 As shown, gNB 102 includes multiple antennas 200a 200n, multiple radio frequency (RF) transceivers 201a 201n, transmit (TX) processing circuitry 203, and receive (RX) processing circuitry 204. gNB 102 also includes a controller / processor 205, a memory 206, and a backhaul or network interface 207.

[0066] RF transceivers 201a and 201n receive incoming RF signals, such as signals transmitted by the UE in network 100, from antennas 200a and 200n. RF transceivers 201a and 201n down-convert the incoming RF signals to generate intermediate frequency (IF) or baseband signals. The IF or baseband signal is sent to RX processing circuitry 204, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 204 sends the processed baseband signal to controller / processor 205 for further processing.

[0067] TX processing circuit 203 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from controller / processor 205. TX processing circuit 203 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 201a and 201n receive the processed baseband or IF signal from TX processing circuit 203 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 201a and 201n.

[0068] The controller / processor 205 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 205 may control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 201a 201n, the RX processing circuit 204, and the TX processing circuit 203, according to known principles. The controller / processor 205 may also support additional functions, such as more advanced wireless communication capabilities.

[0069] For example, the controller / processor 205 can support beamforming or directional routing operations, where outgoing signals from multiple antennas 200a 200n are weighted differently to effectively redirect the outgoing signals in the desired direction. Any of a variety of other functions can be supported in the gNB 102 via the controller / processor 205.

[0070] The controller / processor 205 is also capable of executing programs and other processes located in the memory 206, such as the operating system (OS). The controller / processor 205 can move data into or out of the memory 206 as needed by the executing process.

[0071] The controller / processor 205 is also connected to a backhaul or network interface 207. The backhaul or network interface 207 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. Interface 207 can support communication via any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G, LTE, or LTE A), interface 207 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, interface 207 can allow the gNB 102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the Internet). Interface 207 includes any suitable structure that supports communication via wired or wireless connections such as Ethernet or RF transceivers.

[0072] Memory 206 is connected to controller / processor 205. A portion of memory 206 may include random access memory (RAM), and another portion of memory 206 may include flash memory or other read-only memory (ROM).

[0073] although Figure 2 An example of gNB 102 is shown, but it is possible to see more. Figure 2 Various changes can be made. For example, gNB 102 can include any number of Figure 2 Each component is shown in the diagram. As a specific example, an access point may include multiple interfaces 207, and the controller / processor 205 may support routing functionality to route data between different network addresses. As another specific example, although shown as a single instance of TX processing circuitry 203 and a single instance of RX processing circuitry 204, gNB102 may include multiple instances of each (such as one per RF transceiver). For example, Figure 2 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed.

[0074] Figure 3 An example user equipment according to an embodiment of the present disclosure is shown. Figure 3 The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1 UEs 111, 115, 117, and 119 can have the same or similar configurations. However, UEs appear in multiple configurations, and Figure 3 This disclosure is not intended to limit the scope to any particular implementation of the UE.

[0075] like Figure 3 As shown, UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a TX processing circuit 303, a microphone 304, and a receive (RX) processing circuit 305. UE 116 also includes a speaker 306, a controller or processor 307, an input / output (I / O) interface (IF) 308, an input device 309, a touchscreen display 310, and memory 311. Memory 311 includes an OS 312 and one or more applications 313.

[0076] RF transceiver 302 receives incoming RF signals transmitted by gNB of network 100 from antenna 301. RF transceiver 302 down-converts the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 305, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. RX processing circuitry 305 sends the processed baseband signals to speaker 306 (e.g., for voice data) or processor 307 for further processing (e.g., for web browsing data).

[0077] TX processing circuit 303 receives analog or digital voice data from microphone 304 or other outgoing baseband data (such as web data, email, or interactive video game data) from processor 307. TX processing circuit 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceiver 302 receives the processed baseband or IF signal from TX processing circuit 303 and up-converts the baseband or IF signal into an RF signal transmitted via antenna 301.

[0078] Processor 307 may include one or more processors or other processing devices and executes OS 312 stored in memory 311 to control the overall operation of UE 116. For example, processor 307 may control the reception of forward channel signals and the transmission of reverse channel signals by RF transceiver 302, RX processing circuitry 305, and TX processing circuitry 303 according to known principles. In some embodiments, processor 307 includes at least one microprocessor or microcontroller.

[0079] Processor 307 is also capable of executing other processes and programs located in memory 311, such as processes for CSI reporting on the uplink channel. Processor 307 can move data into or out of memory 311 as needed for executing processes. In some embodiments, processor 307 is configured to execute application 313 based on OS 312 or in response to signals received from gNB or operator. Processor 307 is also coupled to I / O interface 308, which provides UE 116 with the ability to connect to other devices such as laptops and laptops. I / O interface 308 is the communication path between these accessories and processor 307.

[0080] The processor 307 is also connected to the touchscreen display 310. The user of the UE 116 can use the touchscreen display 310 to input data into the UE 116. The touchscreen display 310 can be a liquid crystal display, a light-emitting diode display, or other display capable of rendering text and / or at least limited graphics such as those from a website.

[0081] Memory 311 is connected to processor 307. A portion of memory 311 may include RAM, and another portion of memory 311 may include flash memory or other ROM.

[0082] although Figure 3 An example of UE 116 is shown, but it is possible to modify it. Figure 3 Make various changes. For example, Figure 3 The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, processor 307 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Moreover, although... Figure 3 The UE 116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0083] The embodiments of this application are described in detail below with reference to the accompanying drawings.

[0084] In this paper, a parameter set (numerology) can refer to a group of parameters that define the basic time and frequency units in a wireless communication system. These parameters can be used to determine the waveform of a signal, subcarrier spacing, and sampling rate. A parameter set can include at least one of the following: subcarrier spacing, cyclic prefix, symbol period, sampling rate, slot length, and frame structure. Optionally, the subcarrier spacing can be the frequency difference between two adjacent subcarriers, typically measured in Hertz (Hz). The subcarrier spacing determines the system's bandwidth and time resolution. Optionally, the cyclic prefix is ​​a cyclic prefix added to the beginning of an Orthogonal Frequency-Division Multiplexing (OFDM) symbol. The length of the cyclic prefix is ​​related to the subcarrier spacing; the cyclic prefix is ​​added to reduce the effects of multipath propagation. Optionally, the symbol period can be the duration of an OFDM symbol. Optionally, the symbol period can be the reciprocal of the subcarrier spacing. Optionally, the sampling rate can be the sampling frequency used for receiving and transmitting signals. Optionally, the sampling rate is related to the subcarrier spacing. Optionally, the time slot length can be: in a Time Division Duplex (TDD) system, the time period used to distinguish between the uplink and downlink. Optionally, the time slot length is related to the subcarrier spacing and symbol period. Optionally, the frame structure is used to define the organization of time slots within a frame, including the frame length and the number of time slots. In a communication system, various parameter set configurations can be supported to adapt to different frequency bands and application scenarios. For example, low-frequency bands may use larger subcarrier spacing to support wider bandwidth and longer transmission distances, while high-frequency bands may use smaller subcarrier spacing to support higher data rates and lower latency.

[0085] In this paper, time-domain resources may include / correspond to several time-domain units.

[0086] In this paper, the temporal unit can be one of: frame, subframe, time slot, sub-time slot, or symbol. Optionally, a sub-time slot can be a subset of a time slot in the temporal domain. For example, the symbols included in a sub-time slot are a subset of the symbols included in a time slot. Optionally, in this paper, the temporal unit can be one of: second, millisecond, microsecond, nanosecond, or sample point.

[0087] In this article, the term "A before B" can be used interchangeably with the term "A no later than B".

[0088] In this article, the term "A after B" can be used interchangeably with the term "A no earlier than B".

[0089] In this paper, frequency domain resources may include / correspond to several frequency domain units.

[0090] In this paper, a frequency domain unit can be at least one of the following: band, subband, component carrier (CC), bandwidth part (BWP), resource block, resource block group (RBG), subcarrier, carrier, frequency band, frequency range, cell, and serving cell. A resource block can be a physical resource block (PRB) or a common resource block (CRB). A frequency range can be frequency range 1 and frequency range 2 (e.g., frequency range 2-1 and / or frequency range 2-2).

[0091] In this paper, a cell can be a serving cell or a non-serving cell. A cell can be at least one of a primary cell (PCell), a primary secondary cell (PSCell), a secondary cell, or a special cell. A special cell (SpCell) can be either a PCell or a PSCell. In dual-connectivity operations, a special cell refers to the primary cell of the Master Cell Group (MCG) or the primary / secondary cell of the Secondary Cell Group (SCG); otherwise, the special cell refers to the primary cell. The special cell can be the currently active special cell.

[0092] In this document, a cell may include one or more CCs. A cell may include one or more uplink CCs, and / or one or more downlink CCs.

[0093] In this document, a cell may have a Physical Cell ID (PCI). Optionally, the UE can obtain the cell's PCI by receiving a Synchronization Signal / Physical Broadcast Channel Block (SS / PBCH block, SSB). Optionally, this SSB is a cell-defining SSB. Optionally, the UE can obtain the cell's PCI through an indication from the base station. For example, the UE can obtain the PCI of a non-serving cell through an indication from the base station. For example, the UE can obtain the PCI of the SSB of a non-serving cell through an indication from the base station.

[0094] In this document, an SSB may have a PCI. The PCI of an SSB may be determined based on a reference signal in the SSB or based on an indication from the base station. Optionally, the reference signal in the SSB may be: a Primary Synchronization Signal (PSS) and / or a Secondary Synchronization Signal (SSS).

[0095] In this document, an SSB may include: a reference signal for synchronization and / or a PBCH. Optionally, the reference signal for synchronization may be: a reference signal for downlink synchronization.

[0096] In this paper, the time-frequency unit can be either a resource element (RE) or a resource element group (REG). A resource element group can include one or more resource elements. For example, a resource element group can include 6 or 12 resource elements.

[0097] In this paper, the transmission power of the signal can be represented by the capability at each time-frequency unit, for example, Energy Per Resource Element (EPRE).

[0098] In this paper, the starting time-domain position of a channel, signal, or resource is an earlier position in the time domain, and the ending time-domain position of a channel, signal, or resource is a later position in the time domain.

[0099] In this paper, the starting frequency domain position of a channel, signal, or resource is a lower position in the frequency domain, and the ending frequency domain position of a channel, signal, or resource is a higher position in the frequency domain.

[0100] In this paper, time-domain resources and / or frequency-domain resources may be referred to as physical resources.

[0101] In this paper, the UE can perform uplink transmission and / or downlink reception on physical resources.

[0102] In this paper, the UE can receive downlink channels and / or downlink signals on physical resources.

[0103] The channel received over physical resources can be called the downlink physical channel. The signal received over physical resources can be called the downlink physical signal. Downlink channels include: downlink control channels and / or downlink data channels. The downlink control channel can be: Physical Downlink Control Channel (PDCCH). The downlink data channel can be: Physical Downlink Shared Channel (PDSCH).

[0104] Signals received over physical resources can be referred to as downlink physical signals. Downlink signals may include at least one of the following: reference signals for synchronization, reference signals for demodulation, reference signals for acquiring channel state, reference signals for phase tracking, reference signals for mobility, reference signals for positioning, reference signals for channel measurement, and reference signals for interference measurement. Optionally, the reference signal for synchronization may include at least one of the following: a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). Optionally, the reference signal for synchronization may include an SSB.

[0105] In this paper, the reference signal used for demodulation can be referred to as the demodulation reference signal (DM-RS). The reference signal used for phase tracking can be referred to as the phase-tracking reference signal (PT-RS). The reference signal used for positioning can be referred to as the positioning reference signal (PRS). The reference signal used to obtain the channel state can be referred to as the channel-state information reference signal (CSI-RS).

[0106] In this document, the UE may transmit uplink channels and / or uplink signals on physical resources.

[0107] A channel transmitted over physical resources can be referred to as an uplink physical channel. An uplink channel includes at least one of the following: an uplink control channel, an uplink data channel, and a random access channel. An uplink control channel can be a Physical Uplink Control Channel (PUCCH). An uplink data channel can be a Physical Uplink Shared Channel (PUSCH). A random access channel can be a Physical Random Access Channel (PRACH). In this document, the term "PUCCH" may be used interchangeably with the terms "uplink control channel," "control channel for uplink transmission," "control channel for uplink," or "channel for uplink control information." Similarly, the term "PUSCH" may be used interchangeably with the terms "uplink data channel," "channel for uplink data transmission," or "data channel for uplink."

[0108] Signals transmitted over physical resources can be referred to as uplink physical signals. Uplink signals can include at least one of the following: a reference signal for demodulation, a reference signal for phase tracking, and a reference signal for detection. The reference signal for detection can be referred to as a sounding reference signal (SRS).

[0109] Optionally, the reference signal used for demodulation may include at least one of the following: a reference signal for data channel demodulation, and a reference signal for control channel demodulation. Optionally, the reference signal used to acquire channel state may include at least one of the following: a reference signal for tracking, a reference signal for CSI acquisition, and a reference signal for beam management. The reference signal for beam management includes at least one of the following: a reference signal for acquiring Layer 1 Reference Signal Received Power (L1-RSRP), and a reference signal for acquiring Layer 1 Signal to Interference plus Noise Ratio (L1-SINR). Acquiring L1-RSRP may involve calculating L1-RSRP. Acquiring L1-SINR may involve calculating L1-SINR.

[0110] In this paper, the UE can obtain downlink control information (DCI) through PDCCH.

[0111] In this document, the term “downlink control information” may be used interchangeably with the terms “DCI format” or “control information for downlink”.

[0112] In this document, the term "PDCCH" may be used interchangeably with the terms "downlink control channel" or "control channel for downlink transmission" or "control channel for downlink".

[0113] In this document, the term “PDCCH” may be used interchangeably with the term “PDCCH candidate”.

[0114] In this document, a PDCCH can consist of one or more Control Channel Elements (CCEs). Optionally, the one or more CCEs associated with / corresponding to a PDCCH can be one or more CCEs that make up the PDCCH. The aggregation level (AL) of a PDCCH can be L, where L can be 1, 2, 4, 8, or 16. If the aggregation level of a PDCCH is L, then the PDCCH consists of L CCEs, or is associated with / corresponds to L CCEs. The terms "aggregation level" and "CCE aggregation level" are used interchangeably.

[0115] In this paper, the UE listens for the PDCCH in the search space associated with the Control Resource Set (CORESET). The PDCCH can be monitored from the search space associated with the Control Resource Set.

[0116] In this document, the term “control resource set” may be used interchangeably with the term “control resource” or “resource for receiving control information” or “resource for listening to PDCCH” or “resource for detecting control information”.

[0117] In this document, the term "search space" may be used interchangeably with the terms "PDCCH search space," "PDCCH search space set," "PDCCH candidate search space," "PDCCH candidate search space set," "search space used for searching PDCCH," "search space used for searching PDCCH candidates," "search space set used for searching PDCCH," or "search space set used for searching PDCCH candidates." Optionally, the search space can be a Common Search Space (CSS) or a UE-specific Search Space (USS). Optionally, the search space can be used for detecting DCI. Optionally, the search space can be used for detecting DCI formats.

[0118] In this paper, the term “PDCCH candidate associated with the search space” can be used interchangeably with the term “PDCCH candidate in the search space”.

[0119] In this paper, the modulation method associated with a PDCCH candidate can be the modulation method used by the corresponding PDCCH candidate. The aggregation level associated with a PDCCH candidate can be the aggregation level of the corresponding PDCCH candidate.

[0120] In this document, the UE can listen to the PDCCH (or listen to PDCCH candidates) during a PDCCH listening opportunity. Optionally, a PDCCH listening opportunity can be one or more (contiguous) time-domain units. Optionally, a PDCCH listening opportunity can be: an opportunity for listening to the PDCCH, or an opportunity for listening to PDCCH candidates.

[0121] In this paper, monitoring PDCCH candidates can be: receiving PDCCH candidates and / or decoding according to the monitored DCI formats.

[0122] In this paper, DCI detection includes receiving and / or decoding DCI.

[0123] In this document, the DCI format can be at least one of: DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 0_3, DCI format 1_0, DCI format 1_1, DCI format 1_2, and DCI format 1_3. In this document, the type of the DCI format can be one of the following: DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 0_3, DCI format 1_0, DCI format 1_1, DCI format 1_2, and DCI format 1_3.

[0124] In this document, the PDCCH may carry a DCI and / or the corresponding Cyclic Redundancy Check (CRC), or the DCI and / or the corresponding CRC may be present in the PDCCH. Optionally, the CRC may be scrambled in a specific manner. For example, the CRC may be scrambled based on a Radio Network Temporary Identifier (RNTI). Two PDCCHs having the same scrambling can be achieved by both PDCCHs being scrambled with the same RNTI. Optionally, the RNTI may be one of the Cell-Radio Network Temporary Identifier (C-RNTI) or the ConfiguredScheduling-Radio Network Temporary Identifier (CS-RNTI).

[0125] In this document, the term "information bits of a DCI" may be used interchangeably with the terms "information bits associated with a DCI," "information bits included in a DCI," or "information bits corresponding to a DCI." Optionally, the information bits associated with a DCI may include: the information bits of the DCI and the check bits (e.g., CRC bits) corresponding to the DCI. Alternatively, the information bits associated with a DCI may include: the information bits of the DCI and bits used to verify the DCI (e.g., CRC bits).

[0126] In this paper, the information bits of the DCI can be: the information bits included in the DCI, or the information bits associated with the DCI, or the payload of the DCI.

[0127] In this document, DCI may include one or more information fields.

[0128] In this document, the term “size of the information field” may be used interchangeably with the terms “bit width of the information field” or “number of information bits in the information field”.

[0129] In this paper, the existence of an information field is defined as a field whose size is greater than 0 bits. The non-existence of an information field is defined as a field whose size is equal to 0 bits.

[0130] In this paper, the value x of an information field can correspond to the (x+1)th code point of that information field, where x ≥ 0. Optionally, the number of code points corresponding to an n-bit information field is 2^n. n For any n-bit information field, the first code point is all 0 bits. The last code point is all 1 bits.

[0131] In this paper, the term "value of an information field" is interchangeable with the term "code point of an information field". The term "value x of an information field" is interchangeable with the term "x+1th code point of an information field", where x ≥ 0.

[0132] In this paper, when a DCI schedules a channel or signal, the cell that receives or transmits that channel or signal can be referred to as the scheduled cell. The cell that the DCI is detected in, or the cell that listens to / receives the DCI, can be referred to as the scheduling cell.

[0133] In this paper, when a DCI schedules a channel or signal, the BWP that receives or transmits that channel or signal can be referred to as the scheduled BWP. The BWP that the DCI detects, or the BWP that listens to / receives the PDCCH associated with the DCI, can be referred to as the scheduling BWP.

[0134] In this paper, the UE can acquire data via the PDSCH. The UE can acquire downlink data by receiving the PDSCH.

[0135] In this document, the term “PDSCH” may be used interchangeably with the terms “downlink data channel” or “data channel for downlink transmission” or “downlink channel for receiving data” or “downlink channel for carrying data”.

[0136] In this paper, a PDSCH can carry one or two transmission blocks (TBs). When a PDSCH corresponds to 4 layers or less, it carries one TB. When a PDSCH corresponds to more than 4 layers, it carries two TBs.

[0137] In this document, the term "PDSCH information bits" may be used interchangeably with the terms "PDSCH associated information bits," "PDSCH-bearing information bits," "PDSCH-included TB information bits," or "PDSCH-bearing TB information bits." Optionally, the information bits associated with the PDSCH-bearing information bits may include: the information bits of the TB carried by the PDSCH and the corresponding check bits (e.g., CRC bits). Optionally, the PDSCH-associated information bits may include: the PDSCH / PUSCH information bits and bits used to check the TB carried by the PDSCH (e.g., CRC bits).

[0138] In this document, the term "Transport Block (TB) is a retransmission" can be used interchangeably with the terms "TB is not a new transmission," "TB is a retransmission TB," "PUSCH is a PUSCH retransmission," "New Data Indicator (NDI) toggles," or "NDI=1." The term "TB is a new transmission" can also be used interchangeably with the terms "TB is not a retransmission," "TB is a new transmission TB," "PUSCH is a PUSCH new / initial transmission," "NDI does not toggle," or "NDI=0." NDI can be: the NDI of the TB, or the NDI of the Hybrid Automatic Repeat Request (HARQ) process, or the NDI in DCI, or the NDI in the DCI format. NDI flipping can be defined as the NDI value in the associated HARQ information being toggled compared to the NDI value in the previous transmission of this TB in this HARQ process. In this document, "NDI = 0" can mean: DCI in PDCCH, where the PDCCH carries a CRC scrambled by CS-RNTI, with NDI = 0. In this document, "NDI = 1" can mean: DCI in PDCCH, where the PDCCH carries a CRC scrambled by CS-RNTI, with NDI = 1. Data transmission can be corrected using the Hybrid Automatic Repeat Request with Incremental Redundancy (IR-HARQ) mechanism. Incremental redundancy HARQ combines Automatic Repeat Request (ARQ) and Forward Error Correction (FEC) techniques. It improves data transmission reliability and efficiency by requesting the sender to retransmit additional redundant data instead of the original data when the receiver detects an error. The IR-HARQ mechanism can be implemented through the design of a Redundancy version (RV).In the IR-HARQ mechanism, the redundant bits generated by the encoder can be divided into several groups, with each RV corresponding to one group of redundant bits. The initial transmission and subsequent HARQ retransmissions use different RVs to gradually accumulate redundant bits and complete the incremental redundancy HARQ operation.

[0139] In this paper, a TB transmission corresponds to a TB RV. The TB carried in the downlink / uplink channel can be indicated by its corresponding RV. Optionally, there are four redundancy versions. These four redundancy versions correspond to numbers 0 to 3, respectively. For example, RV#0, RV#1, RV#2, and RV#3. For transmissions of the same TB, RVs can be alternated in a predefined order. For example, RVs can be polled in the order of RV#0, RV#2, RV#3, and RV#1. For example, if the RV corresponding to the nth transmission of a TB is RV#0, then the RV corresponding to the (n+1)mod4th transmission of that TB is RV#2; the RV corresponding to the (n+2)mod4th transmission of that TB is RV#3; and the RV corresponding to the (n+3)mod4th transmission of that TB is RV#1. Here, mod represents the modulo operation. Amode B represents the remainder when A is divided by B.

[0140] In this paper, a PDSCH can be DCI-scheduled / indicated. A PDSCH scheduled / indicated by DCI can be referred to as a dynamically scheduled PDSCH. For example, a PDSCH can be scheduled via DCI format.

[0141] In this document, PDSCH can refer to a PDSCH used for semi-persistent scheduling (SPS). The term "PDSCH used for semi-persistent scheduling" can be interchanged with "SPS PDSCH," "PDSCH without a corresponding PDCCH," "PDSCH scheduled without a corresponding PDCCH," or "PDSCH with SPS." Here, PDCCH can be a PDCCH transmission. Optionally, PDSCH can be scheduled based on higher-layer configuration information. Optionally, this higher-layer configuration information can be used to configure downlink semi-persistent transmission. This higher-layer configuration information is, for example, SPS-Config. The information used to configure downlink semi-persistent transmission can be referred to as SPS configuration information. Optionally, the SPS PDSCH can be activated by DCI. Optionally, the DCI is scrambled using CS-RNTI or Group Configured Scheduling RNTI (G-CS-RNTI).

[0142] In this paper, the reference signal associated with the downlink channel includes: a reference signal for demodulation, and / or a reference signal for phase tracking. For example, the reference signal associated with the downlink channel includes: a reference signal for demodulating the downlink channel, and / or a reference signal for phase tracking the downlink channel. The reference signal associated with the downlink channel may be referred to as: the reference signal of the downlink channel.

[0143] In this paper, the downlink channel may include: the downlink channel and the reference signal associated with the downlink channel.

[0144] In this paper, the UE can transmit uplink control information (UCI) through the uplink channel.

[0145] In this document, the term "Uplink Control Information (UCI)" may be used interchangeably with the term "control information for uplink".

[0146] In this paper, UCI includes: Hybrid Automatic Repeat Request (HARQ) information, information for scheduling request (SR), information for link recovery request (LRR), and Channel State Information (CSI). Hybrid Automatic Repeat Request information can be Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) information. Information for scheduling requests can be referred to as scheduling requests. Information for link recovery requests can be referred to as link recovery requests.

[0147] In this document, UCI includes UCI information bits. UCI information bits can be: information bits included in UCI, information bits associated with UCI, or the UCI payload.

[0148] In this document, the term "UCI information bit" may be used interchangeably with the terms "UCI-associated information bit," "UCI-included information bit," or "DCI / UCI-corresponding information bit." The UCI-associated information bit may include: the UCI information bit and the corresponding check bit (e.g., CRC bit). The UCI-associated information bit may also include: the UCI information bit and bits used to verify the UCI (e.g., CRC bit).

[0149] In this paper, HARQ-ACK information bits can correspond to one or more HARQ-ACK codebooks.

[0150] In this paper, HARQ-ACK information can correspond to PDSCH. One HARQ-ACK information bit can correspond to one or more PDSCH.

[0151] In this document, a HARQ-ACK information bit corresponds to / indicates either a positive acknowledgement (ACK) or a negative acknowledgement (NACK). For example, a HARQ-ACK information bit with a value of 0 represents a NACK. Conversely, a HARQ-ACK information bit with a value of 1 represents an ACK. For a single HARQ-ACK information bit, if the UE correctly decodes a transport block, the UE generates an ACK. If the UE does not correctly decode a transport block, the UE generates a NACK.

[0152] In this paper, the CSI information bits can be divided into one or two parts. When the CSI information bits correspond to two parts, these two parts are: CSI Part One and CSI Part Two.

[0153] In this document, a UE may transmit one or two PUCCHs within a single time-domain element of a serving cell. These two PUCCHs may be transmitted on different time-domain resources. For example, a UE may transmit two PUCCHs on different symbols within a single time slot.

[0154] In this document, the term "PUCCH" may be used interchangeably with the terms "uplink control channel," "channel for transmitting uplink control information," or "channel for carrying uplink control information."

[0155] In this document, the UE can transmit data and / or UCI via PUSCH. UCI on PUSCH can be referred to as UCI multiplexing; or, UCI and data being transmitted together on PUSCH can be referred to as UCI multiplexing.

[0156] In this paper, PUSCH can be used to carry information bits. The information bits carried by PUSCH can be referred to as PUSCH information bits. PUSCH information bits include TB information bits and / or UCI information bits.

[0157] In this document, the term "PUSCH information bits" may be used interchangeably with the terms "PUSCH associated information bits" or "PUSCH-bearing information bits". Optionally, the PUSCH-bearing information bits may include: PUSCH-bearing information bits and check bits (e.g., CRC bits). Optionally, the PUSCH associated information bits may include: PUSCH information bits and bits used to verify the information carried by the PUSCH (e.g., CRC bits).

[0158] In this paper, a PUSCH can carry one or two TBs. When a PUSCH corresponds to 4 layers or less, it carries one TB. When a PUSCH corresponds to more than 4 layers, it carries two TBs.

[0159] In this paper, the uplink channel-associated reference signal includes: a reference signal for demodulation, and / or, a reference signal for phase tracking. For example, the uplink channel-associated reference signal includes: a reference signal for demodulating the uplink channel, and / or, a reference signal for phase tracking the uplink channel. The uplink channel-associated reference signal may be referred to as: the uplink channel reference signal.

[0160] In this paper, the uplink channel may include the uplink channel and the reference signal associated with the uplink channel.

[0161] In this document, the UE can obtain indication information from the base station. Optionally, the indication information may include at least one of the following: configuration information, activation command, and deactivation command. The indication information from the base station may be carried / indicated by at least one of Radio Resource Control (RRC) information, Media Access Control (MAC)-Control Element (CE) (MAC-CE), and DCI. RRC information may be referred to as configuration information. Configuration information may be indicated by RRC parameters in the RRC information. RRC parameters may be RRC information elements. MAC-CE related indication information may be indicated by MAC-CE parameters in the MAC-CE. MAC-CE parameters may be parameters used for MAC-CE signaling indication / activation / deactivation.

[0162] In this document, the UE can obtain one or more configurations via RRC information and instruct / activate / deactivate a portion of those configurations via MAC-CE. The UE can then operate according to the configuration indicated / activated by MAC-CE.

[0163] In this document, the UE can obtain one or more configurations through RRC information and instruct / activate / deactivate a portion of those configurations via MAC-CE. The UE can operate according to the configuration indicated / activated by MAC-CE. Optionally, the UE can determine one or more configurations within that portion of configurations (e.g., the portion of configurations indicated / activated by MAC-CE) based on DCI indications. The UE can operate according to the configuration indicated by DCI.

[0164] In this paper, the RRC parameter and / or MAC-CE parameter may be referred to as high-level parameters.

[0165] In this document, UE obtaining configuration information can refer to: UE receiving / being configured with configuration information. In this document, "obtaining configuration information" can be used interchangeably with the terms "receiving configuration information" or "being configured with configuration information."

[0166] In this document, the UE may send indication information to the base station. The indication information sent to the base station may be carried / indicated by at least one of the following: Radio Resource Control (RRC) information, Media Access Control (MAC)-Control Element (CE) (MAC-CE), and UCI.

[0167] In this document, the UE can send information to the base station to indicate / report UE capabilities. UE capabilities include: UE radio access capability.

[0168] In this document, the term "UE capability" may be used interchangeably with the terms "UE feature", "UE feature group", "UE capability parameter", "reported UE capability", "UE capability signaling", or "reported UE capability parameter".

[0169] In this document, the UE can receive / obtain CSI reporting configuration. The CSI reporting configuration can be indicated / configured by the higher-layer parameter CSI-ReportConfig.

[0170] In this document, the term “CSI” may be used interchangeably with the terms “CSI parameter” or “CSI quantity”.

[0171] In this document, the CSI may include at least one of the following: CSI-RS Resource Indicator (CRI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Layer Indicator (LI), Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) Block Resource Indicator (SSBRI), Layer 1-Reference Signal Received Power (L1-RSRP), Layer 1-Single to Interference Noise Ratio (L1-SINR), Capability Index, and Time-domain Channel Properties (TDCP). The content included in the CSI may be indicated by the base station. For example, the content included in the CSI may be configured by higher-layer parameters (e.g., reportQuantity). For example, high-level parameters (such as reportQuantity) are indicated by the CSI reporting configuration.

[0172] In this document, the time and / or frequency resources used by the UE to report CSI can be controlled by the base station. The UE can report CSI via uplink channels / uplink signals. The UE can transmit uplink channels associated with CSI reporting. CSI can be carried / indicated via uplink channels / uplink signals. In this document, CSI reporting can be at least one of the following: periodic, semi-persistent, or aperiodic. Alternatively, the time-domain behavior of CSI reporting can be at least one of the following: periodic, semi-persistent on PUCCH, semi-persistent on PUSCH, or aperiodic. Periodic CSI reporting can be carried by PUCCH. Semi-persistent CSI reporting can be carried by either PUCCH or PUSCH. Aperiodic CSI reporting can be carried by PUSCH. The time-domain behavior of CSI reporting can be indicated / configured by higher-level parameters (e.g., reporting configuration type (reportConfigType)). For example, a higher-level parameter (e.g., reportConfigType) is indicated by the CSI reporting configuration. The time-domain behavior of CSI reporting can be: the time-domain behavior of CSI reporting corresponding to the CSI reporting configuration. When reportConfigType is set to 'aperiodic', the corresponding CSI reporting is aperiodic CSI reporting. When reportConfigType is set to 'semiPersistentOnPUCCH', the corresponding CSI reporting is semi-persistent CSI reporting carried by PUCCH. When reportConfigType is set to 'semiPersistentOnPUSCH', the corresponding CSI reporting is semi-persistent CSI reporting carried by PUSCH. When reportConfigType is set to 'periodic', the corresponding CSI reporting is periodic CSI reporting.

[0173] In this document, periodic CSI reporting can be triggered / indicated by RRC signaling. For example, when the UE receives a CSI reporting configuration that triggers / indicates periodic CSI reporting and the configuration information is applied (or, after it is applied), the UE performs the corresponding CSI reporting. In this document, semi-persistent CSI reporting can be triggered / indicated by MAC-CE or DCI. For example, semi-persistent CSI reporting sent on PUCCH is triggered / indicated by MAC-CE. For example, semi-persistent CSI reporting sent on PUSCH is triggered / indicated by DCI. In this document, non-periodic CSI reporting can be triggered / indicated by DCI. For example, when the UE receives a DCI used to trigger / indicate CSI reporting, the UE sends the corresponding CSI report.

[0174] In this disclosure, the term "uplink channel associated with CSI report" may be used interchangeably with the terms "uplink channel corresponding to CSI report" or "uplink channel carrying CSI report".

[0175] In this article, CSI can be either a single report or a CSI reported by the UE within a single report instance.

[0176] In this document, the generation and / or reporting of CSIs are based on CSI reporting configuration. For example, the UE receives a CSI reporting configuration from the base station and generates and / or reports CSIs based on that configuration.

[0177] In this document, the term “CSI reporting configuration” may be used interchangeably with the terms “CSI reporting configuration information” or “information for CSI reporting configuration” or “information for configuring CSI reporting” or “CSI reporting settings”.

[0178] In this document, the CSI reporting band can be as indicated by the CSI reporting configuration. The frequency domain granularity associated with / corresponding to CSI can be wideband and / or subband. For example, PMI / CQI reporting can be wideband and / or subband.

[0179] In this document, PMI (or, the value of PMI) may correspond to a codebook (or, the codebook index). The codebook corresponding to PMI may be indicated by the base station. For example, the codebook corresponding to PMI may be indicated by a parameter in the CSI reporting configuration (e.g., CodebookConfig). In this document, the term "codebook" may be used interchangeably with the terms "CSI codebook," "codebook configuration parameter," "codebook configuration information," or "information used to configure the codebook." Optionally, the codebook can be at least one of the following: Type-I codebook, Type II codebook, Enhanced Type II codebook, Further Enhanced Type II Port Selection, Enhanced Type II for coherent joint transmission (CJT), Further Enhanced Type II Port Selection for CJT, Enhanced Type II for predicted PMI, and Further Enhanced Type II Port Selection for predicted PMI. Configuration information associated with the codebook may include / indicate codebook subset restriction.

[0180] In this paper, the UE can calculate CSI parameters based on the assumption of dependencies between CSI parameters. The assumption of dependencies between CSI parameters includes at least one of the following: LI is calculated conditioned on the reported CQI, PMI, RI and CRI; CQI is calculated conditioned on the reported PMI, RI and CRI; PMI is calculated conditioned on the reported RI and CRI; RI is calculated conditioned on the reported CRI.

[0181] In this document, the UE can acquire / determine / generate CSI by measuring CSI resources. The time and / or frequency resources of the CSI resources can be controlled by the base station. CSI resources may include reference signals and / or downlink channels. CSI resources can be configured through CSI resource configuration. A CSI resource configuration can indicate one or more sets of CSI resources. Optionally, each set of CSI resources may include / indicate one or more reference signals. Optionally, a CSI reporting configuration can be associated with one or more CSI resource configurations. For example, the UE can acquire / determine / generate the CSI corresponding to a CSI reporting configuration by measuring the CSI resources corresponding to that CSI resource configuration associated with it.

[0182] In this document, the term “CSI resource configuration” may be used interchangeably with the terms “CSI resource configuration information” or “information for CSI resource configuration” or “information for configuring CSI resources” or “CSI resource setting”.

[0183] In this document, the UE can determine the measurements used to calculate the CSI based on CSI resources (or, the opportunities of CSI resources). For example, the UE can determine channel measurements and / or interference measurements used to calculate the CSI based on CSI resources (or, the opportunities of CSI resources). For example, the UE can determine channel measurements used to calculate the CSI based on CSI resources used for channel measurements (or, the opportunities of CSI resources). For example, the UE can determine interference measurements used to calculate the CSI based on CSI resources used for interference measurements (or, the opportunities of CSI resources).

[0184] In this document, the term “CSI resource transmission opportunity” may be used interchangeably with the terms “CSI resource opportunity” or “CSI resource reception opportunity” or “CSI resource transmission opportunity”.

[0185] In this document, the term “opportunity to transmit a reference signal resource” may be used interchangeably with the terms “opportunity to receive a reference signal resource” or “opportunity to transmit a reference signal” or “opportunity to receive a reference signal” or “opportunity to transmit a reference signal” or “opportunity to receive a reference signal”.

[0186] In this article, “determining a measurement” can mean: determining the result of a measurement, or acquiring the result of a measurement, or acquiring a measurement based on a reference signal, or acquiring a measurement based on measurement resources, or acquiring a measurement used to determine the CSI.

[0187] In this article, "determining channel measurements" can mean: determining the result of channel measurements, or obtaining the result of channel measurements, or obtaining channel measurements based on reference signals, or obtaining channel measurements based on measurement resources, or obtaining channel measurements used to determine CSI.

[0188] In this article, "determining interference measurement" can mean: determining the result of interference measurement, or obtaining the result of interference measurement, or obtaining interference measurement based on a reference signal, or obtaining interference measurement based on measurement resources, or obtaining interference measurement used to determine CSI.

[0189] In this document, CSI resource measurements may or may not have measurement restrictions. Measurement restrictions can be time-domain restrictions. Time-domain measurement restrictions include time-domain restrictions for channel measurements and / or time-domain restrictions for interference measurements. Measurement restrictions can be enabled or disabled through CSI reporting configuration. For example, parameters in the CSI reporting configuration (e.g., `timeRestrictionForChannelMeasurements`) can be used to enable time-domain restrictions for channel measurements. Similarly, parameters in the CSI reporting configuration (e.g., `timeRestrictionForInterferenceMeasurements`) can be used to enable time-domain restrictions for interference measurements.

[0190] In this document, the term "reference signal" may be used interchangeably with the term "reference signal resource".

[0191] In this document, the reference signal may include at least one of the following: a reference signal for synchronization, a reference signal for demodulation, a reference signal for acquiring channel state, a reference signal for phase tracking, a reference signal for mobility, a reference signal for positioning, a reference signal for channel measurement, a reference signal for interference measurement, and a reference signal for detection. Optionally, the reference signal for synchronization includes at least one of the following: a primary synchronization signal and a secondary synchronization signal. Optionally, the reference signal for synchronization may include: a synchronization signal / physical broadcast channel block. Optionally, the reference signal for demodulation may include at least one of the following: a reference signal for data channel demodulation and a reference signal for control channel demodulation. Optionally, the data channel may include at least one of the following: a physical downlink shared channel and a physical uplink shared channel. Optionally, the control channel may include at least one of the following: a physical downlink control channel and a physical uplink control channel. Optionally, the reference signal for acquiring channel state may include at least one of the following: a reference signal for tracking, a reference signal for CSI acquisition, and a reference signal for beam management. Optionally, the reference signal for beam management includes at least one of the following: a reference signal for obtaining L1-RSRP, and a reference signal for obtaining L1-SINR. Optionally, obtaining L1-RSRP can be done by calculating L1-RSRP. Optionally, obtaining L1-SINR can be done by calculating L1-SINR.

[0192] In this paper, the types of reference signals (or, CSI-RS types) include: reference signals for tracking, reference signals for beam management, and reference signals for CSI acquisition.

[0193] Optionally, the reference signal used for tracking can be a reference signal having tracking reference signal information parameters (e.g., trs-Info). Optionally, having tracking reference signal information parameters means that the configuration information of the resource set used to configure the reference signal is configured with tracking reference signal information parameters. Optionally, the tracking reference signal information parameters indicate that the antenna port for all resources in the resource set is the same. Optionally, the resources in the resource set are NZPCSI-RS resources. Optionally, all resources in the resource set are NZP CSI-RS resources.

[0194] Optionally, the reference signal used for beam management can be a reference signal with a repetition parameter (e.g., repetition). Optionally, the reference signal information parameter with a repetition parameter refers to the configuration information of the resource set used to configure the reference signal being configured with the repetition parameter. Optionally, the repetition parameter indicates whether repetition is on / off. If the UE is configured with a non-zero power CSI-RS resource set (e.g., a resource set configured via the NZP-CSI-RS-ResourceSet parameter) and repetition is set to 'on', the UE may assume that the resources within the resource set are transmitted with the same downlink spatial domain transmission filter, where the resources in the resource set are transmitted in different OFDM symbols. If repetition is set to 'off', the UE does not assume that the resources within the resource set are transmitted with the same downlink spatial domain transmission filter. Optionally, the resources in the resource set are NZP CSI-RS resources.

[0195] Optionally, the reference signal used for CSI acquisition can be a reference signal that does not have a tracking reference signal information parameter and does not have a repeat parameter.

[0196] In this document, the term "beam" may include at least one of the following: "quasi-co-location (QCL) parameter", "transmission configuration indication (TCI) status", "spatial filter", "antenna port", "transmission and reception point (TRP)", "reference signal", "beam information", and "beam index". Optionally, one beam being identical to another can mean that one beam and another beam are quasi-co-located.

[0197] In this paper, an antenna port can be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.

[0198] In this paper, two antenna ports are considered quasi-co-located if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. Optionally, the large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0199] In this document, the term "QCL parameter" may be used interchangeably with the terms "QCL information," "QCL assumption," "QCL configuration," "QCL configuration and / or QCL type." Optionally, a QCL parameter may include / represent at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameter. A spatial reception parameter can be a parameter used for spatial reception. Optionally, a QCL parameter may include a combination of different types of parameters. For example, a QCL parameter may include: Doppler shift, Doppler spread, average delay, and delay spread; this type of QCL parameter may be referred to as QCL parameter type A. For example, a QCL parameter may include: Doppler shift and Doppler spread; this type of QCL parameter may be referred to as QCL parameter type B. For example, a QCL parameter may include: Doppler shift and average delay; this type of QCL parameter may be referred to as QCL parameter type C. For example, QCL parameters may include spatial reception parameters, which may be referred to as QCL parameter type D. For instance, if the large-scale properties of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on the other antenna port, then the two antenna ports can be considered quasi-co-located. Optionally, large-scale properties include delay spread, Doppler spread, Doppler shift, average gain, average delay, and one or more of the spatial reception parameters. For instance, if the spatial reception parameters of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on the other antenna port, then the two antenna ports are considered quasi-co-located according to QCL parameter type D.

[0200] In this document, the term "spatial domain filter" may be used interchangeably with the terms "spatial filter," "uplink transmission spatial domain filter," "spatial domain filter for uplink transmission," or "spatial domain filter for downlink reception."

[0201] In this document, the term "TCI state" may be used interchangeably with the terms "TCI state configuration," "TCI state configuration information," "information for configuring the TCI state," or "information for indicating the TCI state." Optionally, the TCI state can be a unified TCI state. Optionally, the TCI state can be at least one of an uplink TCI state (UL TCI state), a downlink TCI state (DL TCI state), or a joint TCI state. Optionally, the unified TCI state can be an uplink TCI state (UL TCI state) and a downlink TCI state (DL TCI state), or a joint TCI state.

[0202] In this document, a TCI state may include parameters configuring a quasi-co-location relationship. These parameters configure the relationship between a reference signal (e.g., one or two reference signals, or one or two downlink reference signals) and at least one of the following: the demodulation reference signal (DM-RS) port of the PDSCH, the DM-RS port of the PDCCH, and the CSI-RS port of the CSI-RS resource. Optionally, the quasi-co-location relationship is configured by a higher-layer parameter (e.g., qcl-Type1) for the first downlink reference signal. Optionally, the quasi-co-location relationship is configured by a higher-layer parameter (e.g., qcl-Type2) for the second downlink reference signal. For the case of two downlink reference signals, the QCL types should not be the same, regardless of whether the references are to the same DL RS or different DL RSs. In this document, the UE may receive / acquire a CSI reporting configuration. The CSI reporting configuration may be indicated / configured by the higher-layer parameter CSI-ReportConfig.

[0203] In this document, the term “CSI” may be used interchangeably with the terms “CSI parameter” or “CSI quantity”.

[0204] In this document, the CSI may include at least one of the following: CSI-RS Resource Indicator (CRI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Layer Indicator (LI), Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) Block Resource Indicator (SSBRI), Layer 1-Reference Signal Received Power (L1-RSRP), Layer 1-Single to Interference Noise Ratio (L1-SINR), Capability Index, and Time-domain Channel Properties (TDCP). The content included in the CSI may be indicated by the base station. For example, the content included in the CSI may be configured by higher-layer parameters (e.g., reportQuantity). For example, high-level parameters (such as reportQuantity) are indicated by the CSI reporting configuration.

[0205] In this document, the time and / or frequency resources used by the UE to report CSI can be controlled by the base station. The UE can report CSI via uplink channels / uplink signals. The UE can transmit uplink channels associated with CSI reporting. CSI can be carried / indicated via uplink channels / uplink signals. In this document, CSI reporting can be at least one of the following: periodic, semi-persistent, or aperiodic. Alternatively, the time-domain behavior of CSI reporting can be at least one of the following: periodic, semi-persistent on PUCCH, semi-persistent on PUSCH, or aperiodic. Periodic CSI reporting can be carried by PUCCH. Semi-persistent CSI reporting can be carried by either PUCCH or PUSCH. Aperiodic CSI reporting can be carried by PUSCH. The time-domain behavior of CSI reporting can be indicated / configured by higher-level parameters (e.g., reporting configuration type (reportConfigType)). For example, a higher-level parameter (e.g., reportConfigType) is indicated by the CSI reporting configuration. The time-domain behavior of CSI reporting can be: the time-domain behavior of CSI reporting corresponding to the CSI reporting configuration. When reportConfigType is set to 'aperiodic', the corresponding CSI reporting is aperiodic CSI reporting. When reportConfigType is set to 'semiPersistentOnPUCCH', the corresponding CSI reporting is semi-persistent CSI reporting carried by PUCCH. When reportConfigType is set to 'semiPersistentOnPUSCH', the corresponding CSI reporting is semi-persistent CSI reporting carried by PUSCH. When reportConfigType is set to 'periodic', the corresponding CSI reporting is periodic CSI reporting.

[0206] In this document, periodic CSI reporting can be triggered / indicated by RRC signaling. For example, when the UE receives a CSI reporting configuration that triggers / indicates periodic CSI reporting and the configuration information is applied (or, after it is applied), the UE performs the corresponding CSI reporting. In this document, semi-persistent CSI reporting can be triggered / indicated by MAC-CE or DCI. For example, semi-persistent CSI reporting sent on PUCCH is triggered / indicated by MAC-CE. For example, semi-persistent CSI reporting sent on PUSCH is triggered / indicated by DCI. In this document, non-periodic CSI reporting can be triggered / indicated by DCI. For example, when the UE receives a DCI used to trigger / indicate CSI reporting, the UE sends the corresponding CSI report.

[0207] In this disclosure, the term "uplink channel associated with CSI report" may be used interchangeably with the terms "uplink channel corresponding to CSI report" or "uplink channel carrying CSI report".

[0208] In this article, CSI can be either a single report or a CSI reported by the UE within a single report instance.

[0209] In this document, the generation and / or reporting of CSIs are based on CSI reporting configuration. For example, the UE receives a CSI reporting configuration from the base station and generates and / or reports CSIs based on that configuration.

[0210] In this document, the term “CSI reporting configuration” may be used interchangeably with the terms “CSI reporting configuration information” or “information for CSI reporting configuration” or “information for configuring CSI reporting” or “CSI reporting settings”.

[0211] In this document, the CSI reporting band can be as indicated by the CSI reporting configuration. The frequency domain granularity associated with / corresponding to CSI can be wideband and / or subband. For example, PMI / CQI reporting can be wideband and / or subband.

[0212] In this document, PMI (or, the value of PMI) may correspond to a codebook (or, the codebook index). The codebook corresponding to PMI may be indicated by the base station. For example, the codebook corresponding to PMI may be indicated by a parameter in the CSI reporting configuration (e.g., CodebookConfig). In this document, the term "codebook" may be used interchangeably with the terms "CSI codebook," "codebook configuration parameter," "codebook configuration information," or "information used to configure the codebook." Optionally, the codebook can be at least one of the following: Type-I codebook, Type II codebook, Enhanced Type II codebook, Further Enhanced Type II Port Selection, Enhanced Type II for coherent joint transmission (CJT), Further Enhanced Type II Port Selection for CJT, Enhanced Type II for predicted PMI, and Further Enhanced Type II Port Selection for predicted PMI. Configuration information associated with the codebook may include / indicate codebook subset restriction.

[0213] In this paper, the UE can calculate CSI parameters based on the assumption of dependencies between CSI parameters. The assumption of dependencies between CSI parameters includes at least one of the following: LI is calculated conditioned on the reported CQI, PMI, RI and CRI; CQI is calculated conditioned on the reported PMI, RI and CRI; PMI is calculated conditioned on the reported RI and CRI; RI is calculated conditioned on the reported CRI.

[0214] In this document, the UE can acquire / determine / generate CSI by measuring CSI resources. The time and / or frequency resources of the CSI resources can be controlled by the base station. CSI resources may include reference signals and / or downlink channels. CSI resources can be configured through CSI resource configuration. A CSI resource configuration can indicate one or more sets of CSI resources. Optionally, each set of CSI resources may include / indicate one or more reference signals. Optionally, a CSI reporting configuration can be associated with one or more CSI resource configurations. For example, the UE can acquire / determine / generate the CSI corresponding to a CSI reporting configuration by measuring the CSI resources corresponding to that CSI resource configuration associated with it.

[0215] In this document, the term “CSI resource configuration” may be used interchangeably with the terms “CSI resource configuration information” or “information for CSI resource configuration” or “information for configuring CSI resources” or “CSI resource setting”.

[0216] In this document, the UE can determine the measurements used to calculate the CSI based on CSI resources (or, the opportunities of CSI resources). For example, the UE can determine channel measurements and / or interference measurements used to calculate the CSI based on CSI resources (or, the opportunities of CSI resources). For example, the UE can determine channel measurements used to calculate the CSI based on CSI resources used for channel measurements (or, the opportunities of CSI resources). For example, the UE can determine interference measurements used to calculate the CSI based on CSI resources used for interference measurements (or, the opportunities of CSI resources).

[0217] In this document, the term “CSI resource transmission opportunity” may be used interchangeably with the terms “CSI resource opportunity” or “CSI resource reception opportunity” or “CSI resource transmission opportunity”.

[0218] In this document, the term “transmission opportunity of reference signal resource” may be used interchangeably with the terms “opportunity of reference signal resource” or “reception opportunity of reference signal resource” or “transmission opportunity of reference signal” or “opportunity of reference signal” or “reception opportunity of reference signal”.

[0219] In this article, “determining a measurement” can mean: determining the result of a measurement, or acquiring the result of a measurement, or acquiring a measurement based on a reference signal, or acquiring a measurement based on measurement resources, or acquiring a measurement used to determine the CSI.

[0220] In this article, "determining channel measurements" can mean: determining the result of channel measurements, or obtaining the result of channel measurements, or obtaining channel measurements based on reference signals, or obtaining channel measurements based on measurement resources, or obtaining channel measurements used to determine CSI.

[0221] In this article, "determining interference measurement" can mean: determining the result of interference measurement, or obtaining the result of interference measurement, or obtaining interference measurement based on a reference signal, or obtaining interference measurement based on measurement resources, or obtaining interference measurement used to determine CSI.

[0222] In this document, CSI resource measurements may or may not have measurement restrictions. Measurement restrictions can be time-domain restrictions. Time-domain measurement restrictions include time-domain restrictions for channel measurements and / or time-domain restrictions for interference measurements. Measurement restrictions can be enabled or disabled through CSI reporting configuration. For example, parameters in the CSI reporting configuration (e.g., `timeRestrictionForChannelMeasurements`) can be used to enable time-domain restrictions for channel measurements. Similarly, parameters in the CSI reporting configuration (e.g., `timeRestrictionForInterferenceMeasurements`) can be used to enable time-domain restrictions for interference measurements.

[0223] In this document, the term "reference signal" may be used interchangeably with the term "reference signal resource".

[0224] In this document, the reference signal may include at least one of the following: a reference signal for synchronization, a reference signal for demodulation, a reference signal for acquiring channel state, a reference signal for phase tracking, a reference signal for mobility, a reference signal for positioning, a reference signal for channel measurement, a reference signal for interference measurement, and a reference signal for detection. Optionally, the reference signal for synchronization includes at least one of the following: a primary synchronization signal and a secondary synchronization signal. Optionally, the reference signal for synchronization may include: a synchronization signal / physical broadcast channel block. Optionally, the reference signal for demodulation may include at least one of the following: a reference signal for data channel demodulation and a reference signal for control channel demodulation. Optionally, the data channel may include at least one of the following: a physical downlink shared channel and a physical uplink shared channel. Optionally, the control channel may include at least one of the following: a physical downlink control channel and a physical uplink control channel. Optionally, the reference signal for acquiring channel state may include at least one of the following: a reference signal for tracking, a reference signal for CSI acquisition, and a reference signal for beam management. Optionally, the reference signal for beam management includes at least one of the following: a reference signal for obtaining L1-RSRP, and a reference signal for obtaining L1-SINR. Optionally, obtaining L1-RSRP can be done by calculating L1-RSRP. Optionally, obtaining L1-SINR can be done by calculating L1-SINR.

[0225] In this paper, the types of reference signals (or, CSI-RS types) include: reference signals for tracking, reference signals for beam management, and reference signals for CSI acquisition.

[0226] Optionally, the reference signal used for tracking can be a reference signal having tracking reference signal information parameters (e.g., trs-Info). Optionally, having tracking reference signal information parameters means that the configuration information of the resource set used to configure the reference signal is configured with tracking reference signal information parameters. Optionally, the tracking reference signal information parameters indicate that the antenna port for all resources in the resource set is the same. Optionally, the resources in the resource set are NZPCSI-RS resources. Optionally, all resources in the resource set are NZP CSI-RS resources.

[0227] Optionally, the reference signal used for beam management can be a reference signal with a repetition parameter (e.g., repetition). Optionally, the reference signal information parameter with a repetition parameter refers to the configuration information of the resource set used to configure the reference signal being configured with the repetition parameter. Optionally, the repetition parameter indicates whether repetition is on / off. If the UE is configured with a non-zero power CSI-RS resource set (e.g., a resource set configured via the NZP-CSI-RS-ResourceSet parameter) and repetition is set to 'on', the UE may assume that the resources within the resource set are transmitted with the same downlink spatial domain transmission filter, where the resources in the resource set are transmitted in different OFDM symbols. If repetition is set to 'off', the UE does not assume that the resources within the resource set are transmitted with the same downlink spatial domain transmission filter. Optionally, the resources in the resource set are NZP CSI-RS resources.

[0228] Optionally, the reference signal used for CSI acquisition can be a reference signal that does not have a tracking reference signal information parameter and does not have a repeat parameter.

[0229] In this document, the term "beam" may include at least one of the following: "quasi-co-location (QCL) parameter", "transmission configuration indication (TCI) status", "spatial filter", "antenna port", "transmission and reception point (TRP)", "reference signal", "beam information", and "beam index". Optionally, one beam being identical to another can mean that one beam and another beam are quasi-co-located.

[0230] In this paper, an antenna port can be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.

[0231] In this paper, two antenna ports are considered quasi-co-located if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. Optionally, the large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0232] In this document, the term "QCL parameter" may be used interchangeably with the terms "QCL information," "QCL assumption," "QCL configuration," "QCL configuration and / or QCL type." Optionally, a QCL parameter may include / represent at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameter. A spatial reception parameter can be a parameter used for spatial reception. Optionally, a QCL parameter may include a combination of different types of parameters. For example, a QCL parameter may include: Doppler shift, Doppler spread, average delay, and delay spread; this type of QCL parameter may be referred to as QCL parameter type A. For example, a QCL parameter may include: Doppler shift and Doppler spread; this type of QCL parameter may be referred to as QCL parameter type B. For example, a QCL parameter may include: Doppler shift and average delay; this type of QCL parameter may be referred to as QCL parameter type C. For example, QCL parameters may include spatial reception parameters, which may be referred to as QCL parameter type D. For instance, if the large-scale properties of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on the other antenna port, then the two antenna ports can be considered quasi-co-located. Optionally, large-scale properties include delay spread, Doppler spread, Doppler shift, average gain, average delay, and one or more of the spatial reception parameters. For instance, if the spatial reception parameters of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on the other antenna port, then the two antenna ports are considered quasi-co-located according to QCL parameter type D.

[0233] In this document, the term "spatial domain filter" may be used interchangeably with the terms "spatial filter," "uplink transmission spatial domain filter," "spatial domain filter for uplink transmission," or "spatial domain filter for downlink reception."

[0234] In this document, the term "TCI state" may be used interchangeably with the terms "TCI state configuration," "TCI state configuration information," "information for configuring the TCI state," or "information for indicating the TCI state." Optionally, the TCI state can be a unified TCI state. Optionally, the TCI state can be at least one of an uplink TCI state (UL TCI state), a downlink TCI state (DL TCI state), or a joint TCI state. Optionally, the unified TCI state can be an uplink TCI state (UL TCI state) and a downlink TCI state (DL TCI state), or a joint TCI state.

[0235] In this document, a TCI state may include parameters configuring a quasi-co-location relationship. These parameters configure the relationship between a reference signal (e.g., one or two reference signals, or one or two downlink reference signals) and at least one of the following: the demodulation reference signal (DM-RS) port of the PDSCH, the DM-RS port of the PDCCH, or the CSI-RS port of the CSI-RS resource. Optionally, the quasi-co-location relationship is configured by higher-layer parameters (e.g., qcl-Type1) for the first downlink reference signal. Optionally, the quasi-co-location relationship is configured by higher-layer parameters (e.g., qcl-Type2) for the second downlink reference signal. In the case of two downlink reference signals, the QCL types should not be the same, regardless of whether the references are to the same DL RS or different DL RSs.

[0236] In this document, the TCI state can be a reference signal for thequasi co-location for DM-RS of PDSCH and DM-RS of PDCCH in a BWP / CC, for CSI-RS, and to provide a reference, if applicable, for determining the UL TX spatial filter. Optionally, the uplink spatial filter can be for dynamically-granted and configured-grant based PUSCH and PUCCH resources and SRS.

[0237] In this document, the UE can obtain the indicated TCI state for receiving downlink channels / downlink signals, and / or for transmitting uplink channels / uplink signals. The indicated TCI state can be obtained through the following methods.

[0238] The UE can receive / apply an indication of the TCI state. For example, the TCI state indication can originate from a base station. Optionally, the UE can obtain the indicated TCI state by receiving the TCI state indication. The TCI state can be indicated via at least one of the following signaling: RRC, MAC-CE, DCI. Optionally, the indicated TCI state can be obtained via at least one of the following: RRC, MAC-CE, DCI. Optionally, the UE can obtain the configured TCI state by receiving RRC signaling associated with the TCI state. Optionally, the UE can obtain the activated TCI state by receiving MAC-CE signaling. Optionally, the activated TCI state originates from a configured TCI state, or the activated TCI state is at least one of the configured TCI states, or the activated TCI state is a subset of the configured TCI states. Optionally, the UE can obtain the indicated TCI state by receiving DCI. Optionally, the indicated TCI state is derived from an activated TCI state, or the indicated TCI state is at least one of the activated TCI states.

[0239] Optionally, the UE may receive an RRC, wherein the RRC may indicate / include configuration information for configuring TCI states. Optionally, the UE may receive configuration information for configuring TCI states. For example, the configuration information for configuring TCI states may be dl-OrJointTCI-StateList. Optionally, the configuration information for configuring TCI states may be in higher-level parameters (e.g., PDSCH-Config) used to configure UE-specific PDSCH parameters. Optionally, the configuration information for configuring TCI states indicates / configures M TCI states. Optionally, M ≥ 1 and / or M ≤ 128. When M = 1, the indicated TCI state refers to the TCI state configured by the higher-level parameters associated with the TCI state. Optionally, the UE applies the indicated TCI after receiving the configuration information for configuring TCI states.

[0240] Optionally, the UE can receive PDCCH configuration information for configuring the PDCCH. Optionally, this PDCCH configuration information can be used to monitor the DCI, where the DCI may include a field indicating the TCI state. This field may be called the TCI field. The size of the TCI field can be predefined or indicated by the base station. For example, the size of the TCI field can be 1 bit, 2 bits, or 3 bits. The TCI field can correspond to several code points, which may be called TCI code points. Optionally, the indicated TCI state can be indicated through the TCI field. For example, the UE can obtain the code point corresponding to the value of the TCI field in the DCI by detecting the DCI. The UE can determine the indicated TCI state based on the TCI state corresponding to the code point.

[0241] The mapping relationship between TCI code points and one or more configured TCI states (e.g., M TCI states) can be indicated by MAC-CE. Optionally, the UE can receive MAC-CE from the base station. Optionally, MAC-CE can activate / indicate one or more TCI states, or MAC-CE can activate / indicate one or more pairs of TCI states. Optionally, MAC-CE can be used to map one or more TCI code points to TCI states. The TCI state indicated / activated by MAC-CE can be referred to as the activated TCI state. Optionally, the activated TCI state is at least one of the M configured TCI states. If MAC-CE maps only a TCI state to a TCI code point, the UE applies the TCI state corresponding to that code point. If MAC-CE maps only a TCI state to a TCI code point, the TCI state corresponding to that code point is the indicated TCI state.

[0242] Optionally, a code point can be mapped to a TCI state. For example, a code point can be mapped to a joint TCI state. Optionally, the joint TCI state can be for both downlink channel / downlink signal (DLTCI state for DL ​​channel / signal) and uplink channel / uplink signal (UL TCI state for UL channel / signal). Optionally, a code point can be mapped to a TCI state pair. A TCI state pair can include a downlink TCI state and an uplink TCI state. Optionally, the downlink TCI state is for the downlink channel / downlink signal (DL TCI state for DL ​​channel / signal). Optionally, the uplink TCI state is for the uplink channel / uplink signal (UL TCI state for UL channel / signal).

[0243] The UE can obtain the indicated TCI state through the above method. The UE can obtain an indicated TCI state. The UE can use / apply the indicated TCI state to receive downlink channels / downlink signals, and / or transmit uplink channels / uplink signals. The UE can use / apply the indicated first TCI state and / or the indicated second TCI state to receive downlink channels / downlink signals, and / or transmit uplink channels / uplink signals.

[0244] In this document, the UE applies the indicated TCI state carried by the DCI when at least one of the following conditions is met: 1) The UE is configured with the dl-OrJointTCI-StateList parameter; 2) The UE will transmit HARQ-ACK information corresponding to the DCI; optionally, the HARQ-ACK information is HARQ-ACK; optionally, the HARQ-ACK information is carried by PUSCH or PUCCH; optionally, the DCI is without DL assignment, or the DCI schedules one or more PDSCHs; 3) The indicated TCI state is different from the previously indicated one. Optionally, the indicated TCI state is applied after the DCI. Optionally, the indicated TCI state is applied starting from the first time slot after beamAppTime symbols following the last symbol of the uplink channel carrying the HARQ-ACK information. The first slot (that is at least beamAppTime symbols after the last symbol of the UL channel carrying the HARQ-ACK information). Here, beamAppTime is a parameter that defines the minimum delay, in symbols, from the end of a PUCCH or PUSCH transmission to the application of a new TCI state. This parameter ensures sufficient time to process and prepare for a new transmission before applying a new TCI state. Optionally, beamAppTime can be predefined or indicated by the base station. The value of beamAppTime can be one of 1, 2, 3, 4, 14, 28, 42, 56, 70, 84, 98, 112, 224, or 336.

[0245] In this document, the indicated TCI state can be applied to one or more serving cells. The indicated TCI state can be applied to one or more BWPs within a serving cell.

[0246] In this paper, the activated TCI state can be applied to one or more serving cells. The activated TCI state can be applied to one or more BWPs in a serving cell.

[0247] In this document, the CSI reporting configuration and / or the CSI reporting associated with / corresponding to the CSI reporting configuration can be based on Artificial Intelligent / Machine Learning (AI / ML). In this document, the term "AI / ML" can be used interchangeably with the term "AI / ML model" or simply "model". Optionally, the CSI reporting configuration and / or the CSI reporting associated with / corresponding to the CSI reporting configuration can be used for inference. Optionally, the CSI reporting configuration and / or the CSI reporting associated with / corresponding to the CSI reporting configuration can be used for reporting inference results. In this document, inference can be based on an AI / ML model. Optionally, the CSI reporting configuration and / or the CSI reporting associated with / corresponding to the CSI reporting configuration can be used for model monitoring. In this document, model monitoring can be the monitoring of an AI / ML model. Optionally, the CSI reporting configuration and / or the CSI reporting associated with / corresponding to the CSI reporting configuration can be used for training. In this document, training can be the training of an AI / ML model. Optionally, the CSI reporting configuration and / or the CSI reporting associated with / corresponding to the CSI reporting configuration can be used for data collection. In this paper, data collection can be data collection for AI / ML models.

[0248] In this document, CSI reporting configuration and / or CSI reporting associated with / corresponding to CSI reporting configuration can be applied to the UE-side model. For example, when the UE-side model is deployed / used, CSI reporting configuration and / or CSI reporting-related operations associated with / corresponding to CSI reporting configuration can be used.

[0249] In this document, the UE state may include at least one of the following: 1) RRC idle state; 2) RRC inactive state; 3) RRC connected state. Optionally, RRC idle state means that no RRC connection is established. Optionally, when an RRC connection is established, the UE is in the RRC inactive state, or the UE is in the RRC connected state.

[0250] In this document, the UE can perform a random access procedure. Optionally, the UE can receive configuration information for the random access procedure. Optionally, the UE performs the random access procedure based on the configuration information for the random access procedure.

[0251] Optionally, the random access procedure may be triggered. Optionally, the random access procedure may be triggered by at least one of the following: 1) initial access from RRC idle state; 2) RRC connection re-establishment procedure; 3) handover; 4) scheduling request failure; 5) beamfailure recovery; 6) request for system information. Here, system information may be: other system information. Other system information may be system information not used for initial access.

[0252] In this document, the term "random access procedure" may be used interchangeably with the term "physical random access procedure." Optionally, a physical random access procedure may be triggered by a request for PRACH transmission from a higher layer. Optionally, a physical random access procedure may be triggered by a PDCCH order.

[0253] Optionally, the random access procedure (or the type of random access procedure) may include at least one of the following: 1) a first type of random access procedure; 2) a second type of random access procedure. In this document, for example, a first type of random access procedure may refer to a four-step random access procedure. A second type of random access procedure may refer to a two-step random access procedure.

[0254] Optionally, the random access procedure may include at least one of the following: 1) contention-based random access; 2) contention-free random access.

[0255] In this document, the terms “random access procedure” and “random access” are used interchangeably.

[0256] Optionally, the UE can determine / select the random access type. Optionally, the UE can determine / select the type of random access atinitiation of the random access procedure. Optionally, the UE can determine / select the random access type based on the base station's configuration information.

[0257] In this document, the first type of random access procedure includes at least one of the following: 1) sending message 1 (Msg1); 2) receiving message 2 (Msg2); 3) sending message 3 (Msg3); 4) receiving message 4 (Msg4).

[0258] For example, the UE sends Msg1. After sending Msg1, the UE receives Msg2 (or, the UE listens for the PDCCH associated with Msg2 within a configured window). After receiving Msg2, the UE sends Msg3, which is scheduled by the uplink permission in Msg2. After sending Msg3, the UE receives Msg4 (or, the UE listens for the PDCCH associated with Msg4).

[0259] In this document, Msg1 includes at least one of the following: 1) a random access preamble; 2) a PRACH. Optionally, the UE may transmit the random access preamble via PRACH.

[0260] In this document, Msg2 includes at least one of the following: 1) random access response (RAR); 2) random access response information; 3) random access response information on a downlink channel (RAR message with a DL channel); 4) uplink scheduling permission. The random access response information on the downlink channel can be: random access response information carried on the downlink channel. Optionally, Msg2 can be a response to Msg1. Optionally, Msg2 can be a response from the base station to Msg1. Optionally, Msg2 can be used for scheduling uplink data. Optionally, Msg2 can be an uplink permission. Optionally, Msg2 can include an uplink scheduling permission. Optionally, the random access response information can be carried by a PDSCH scheduled by the PDCCH. The UE can listen to the PDCCH used to schedule the PDSCH carrying Msg2. The UE can listen to the PDCCH used to carry Msg2.

[0261] In this document, Msg3 includes at least one of the following: 1) an uplink channel indicated / scheduled by Msg2; 2) an uplink channel scheduled by RAR; 3) an uplink channel scheduled by a RAR uplink grant (UL channel scheduled by a RAR UL grant).

[0262] In this document, Msg4 includes at least one of the following: 1) information for contention resolution; 2) a downlink channel (DL channel) for contention resolution; and 3) feedback for Msg3. Optionally, Msg4 may be feedback for Msg3 from the base station. Optionally, the information for contention resolution is carried by the PDSCH scheduled by the PDCCH. The UE may listen to this PDCCH.

[0263] In this document, the second type of random access procedure includes at least one of the following: 1) sending message A (Message A, MsgA); 2) receiving message B (Message B, MsgB); 3) sending message 3 (Message 3, Msg3); 4) receiving message 4 (Message 4, Msg4).

[0264] For example, the UE sends MsgA. After sending MsgA, the UE receives MsgB (or, the UE listens for the PDCCH associated with MsgB within a configured window). Optionally, after receiving MsgB, the UE sends Msg3, which is scheduled by the uplink permission in Msg2. After sending Msg3, the UE receives Msg4 (or, the UE listens for the PDCCH associated with Msg4).

[0265] In this document, MsgA includes at least one of the following: 1) a random access preamble; 2) an uplink channel. For example, MsgA includes PRACH and PUSCH. PUSCH may be a configuration-granted PUSCH. Optionally, PUSCH may be a PUSCH associated with PRACH.

[0266] For example, a UE can send a random access preamble via PRACH. After sending the PRACH, the UE can send a PUSCH associated with that PRACH. The resources used for sending the PRACH and the resources used for sending the associated PUSCH are indicated by the base station (e.g., through the base station's configuration information).

[0267] In this document, MsgB includes at least one of the following: 1) random access response (RAR); 2) random access response information; 3) random access response information on a downlink channel (RAR message with a DL channel); 4) uplink scheduling permission. The random access response information on the downlink channel can be: random access response information carried on the downlink channel. Optionally, MsgB can be a response to MsgA. Optionally, MsgB can be a response from the base station to MsgA. Optionally, MsgB can be used for scheduling uplink data. Optionally, MsgB can be an uplink permission. Optionally, MsgB can include an uplink scheduling permission. Optionally, the random access response information can be carried by a PDSCH scheduled by the PDCCH. The UE can listen to the PDCCH used to schedule the PDSCH carrying MsgB. The UE can listen to the PDCCH used to schedule the PMSCH carrying MsgB.

[0268] In this document, the resources (e.g., time-frequency resources) used to transmit Msg1 or MsgA may be referred to as a PRACH occasion. Optionally, the time-frequency resource may include one or more time-frequency units. In this document, the terms "PRACH occasion" and "PRACH transmission opportunity," "RACH resource," or "random access resource" may be used interchangeably.

[0269] In this paper, one PRACH opportunity can correspond to one PRACH opportunity index.

[0270] In this paper, in a PRACH opportunity, N preamble A random access preamble is defined. Optionally, N preamble This can be indicated by the base station. Optionally, N preamble It can be predefined. Optionally, N preambleIt can be an integer greater than or equal to 0. For example, N preamble The value can be one of 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024. In this paper, the random access preamble can be a preamble used for random access.

[0271] In this paper, a random access preamble can correspond to a sequence. Optionally, a random access preamble can correspond to an index of a sequence. Optionally, the sequence can be a root sequence. Optionally, the sequence can be a logical sequence. Optionally, a random access preamble can correspond to a cyclic shift of a sequence. Optionally, a random access preamble can correspond to the value of a cyclic shift of a sequence. Optionally, N preamble Each random access leader can correspond to the same or different sequences. Optionally, N preamble Each random access leader can correspond to the same or different sequence indices. Optionally, N preamble Each random access leader can correspond to the same or different cyclic shifts of the same sequence.

[0272] In this paper, in a PRACH transmission opportunity, N subset A random access preamble can be used for PRACH transmission. Optionally, N subset ≤N preamble Optionally, N subset It is an integer greater than or equal to 1. Optionally, N subset The random access preamble can be predefined or indicated by the base station. Optionally, N subset It can be predefined or indicated by the base station.

[0273] In this paper, the frequency domain resources occupied by a PRACH opportunity association can be determined based on the PRACH format and / or sequence length of the PRACH opportunity association. The number of frequency domain units occupied by a PRACH opportunity association can be determined based on the PRACH format and / or sequence length of the PRACH opportunity association.

[0274] Figure 4A method 400 performed by a user equipment (UE) according to various embodiments of the present disclosure is illustrated. Method 400 includes: at 410, receiving first random access information for random access, the first random access information indicating a PRACH opportunity for transmitting a Physical Random Access Channel (PRACH); at 420, receiving first reference signal information indicating K1 reference signals for measurement, K1 being an integer greater than or equal to 1; at 430, receiving second reference signal information indicating K2 reference signals for prediction, K2 being an integer greater than or equal to 1; and at 440, transmitting a PRACH on a first PRACH opportunity associated with the first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on measurements of the K1 reference signals, and the first reference signal is a reference signal among the K1 reference signals and / or K2 reference signals. In this document, "first reference signal information" and "first information" are used interchangeably, and "second reference signal information" and "second information" are used interchangeably; this application does not limit the names "first reference signal information" and "second reference signal information".

[0275] In some cases, the UE can receive / acquire first random access information. Optionally, the first random access information may be indicated by the base station. Optionally, the first random access information may be indicated / configured via system information. Optionally, the first random access information may be used for random access. Optionally, the first random access information may be used to configure / indicate random access parameters. Optionally, the first random access information may be cell-specific configuration information. Optionally, the first random access information may be UE-specific configuration information. Optionally, the first random access information may be specific to a single cell. Optionally, the UE may transmit PRACH based on the first random access information within that cell. In this document, "first random access information" can be used interchangeably with "first configuration information for random access," and "second random access information" can be used interchangeably with "second configuration information for random access." This application does not limit the names of "first random access information" and "second random access information." In this document, "first random access information" refers to configuration information used to configure the association between a reference signal used for prediction and PRACH opportunities, and "second random access information" refers to configuration information used to configure the association between a reference signal used for measurement and PRACH opportunities. A description of "first random access information" and "second random access information" is given below.

[0276] Optionally, the first random access information may indicate the number (or total number) of preambles used for random access. Optionally, the first random access information may indicate the number (or total number) of preambles used for random access in the random access resources. Optionally, the UE may generate / determine preambles based on the number of preambles used for random access. Optionally, N subset The value is equal to the number of preambles used for random access.

[0277] Optionally, the first random access information may indicate sequence-related parameters corresponding to the preamble used for random access. For example, the sequence-related parameters include at least one of the following: a root sequence index, and parameters indicating the cyclic shift of the root sequence. For example, the UE may transmit the preamble using the corresponding sequence and / or cyclic shift based on the sequence-related parameters corresponding to the preamble used for random access.

[0278] Optionally, the first random access information may indicate resources (e.g., time-frequency resources) used for random access. Optionally, the first random access information may indicate resources used for PRACH transmission. Optionally, the first random access information may indicate a PRACH opportunity. Optionally, the UE may determine a PRACH opportunity based on the first random access information.

[0279] Optionally, the first random access information may indicate the frequency domain resources used for PRACH transmission. Optionally, the first random access information may indicate the starting point of the frequency domain resources used for PRACH transmission. Optionally, the starting point of the frequency domain resources may include: a frequency domain cell associated with PRACH opportunity. For example, the starting point of the frequency domain resources may include: the lowest frequency domain cell associated with PRACH opportunity. Optionally, the first random access information may indicate the offset between a predefined frequency domain cell and the frequency domain cell associated with the starting point of the frequency domain resources. Optionally, the predefined frequency domain cell may be PRB 0. Optionally, the predefined frequency domain cell may be determined based on the SSB. Optionally, the predefined frequency domain cell may be determined based on the frequency domain location of the cell-associated / corresponding SSB.

[0280] Optionally, the first random access information may indicate the number of PRACH opportunities in the frequency division multiplexing (FDM) domain.

[0281] Optionally, the first random access information may indicate at least one of the following: 1) the format of the preamble; 2) the time-domain resources / time-domain location associated with the PRACH opportunity. Optionally, the first random access information may indicate a PRACH configuration. Optionally, the first random access information may indicate a PRACH configuration index. Optionally, a PRACH configuration (or a PRACH configuration index) may include / associate at least one of the following: 1) the format of the preamble; 2) the time-domain resources / time-domain location associated with the PRACH opportunity. Optionally, the time-domain resources associated with the PRACH opportunity include: the time-domain cell where the PRACH opportunity is located. For example, the PRACH configuration may indicate the index of the subframe where the PRACH opportunity is located / associated with it, the index of the time slot where it is located / associated with it, the start symbol where it is located / associated with it, and the number of PRACH time slots where it is located / associated with it. The UE can determine the time-domain cell where the PRACH opportunity is located based on the PRACH configuration.

[0282] The UE can receive first reference signal information. Optionally, the first reference signal information may be indicated / configured by the base station. Optionally, the first reference signal information may be indicated by the base station. Optionally, the first reference signal information may be indicated / configured via system information. Optionally, the first reference signal information indicates a reference signal. Optionally, the first reference signal information may indicate the time-domain location of the reference signal. Optionally, the first reference signal information indicates K1 reference signals. Optionally, K1 ≥ 1. Optionally, the first reference signal information may include a bitmap, wherein a bit with a first value (e.g., 1) indicates that the corresponding reference signal has been transmitted / indicated, and / or, a bit with a second value (e.g., 0) indicates that the corresponding reference signal has not been transmitted / indicated. Optionally, one bit / each bit in the bitmap corresponds to the time-domain location of a reference signal. Optionally, the K1 reference signals may include: the reference signal corresponding to the bit with the first value. Optionally, the reference signal may be used for measurement. Optionally, the reference signal may be used for channel measurement and / or interference measurement. Optionally, the reference signal may be an SSB. Optionally, the reference signal may be CSI-RS. Optionally, the reference signal may be SSB and / or CSI-RS.

[0283] Optionally, the K1 reference signals can be used for link recovery. Optionally, the K1 reference signals can be used for beam failure recovery. Optionally, the K1 reference signals can be used for L1 / L2 triggered mobility (LTM). Optionally, the K1 reference signals can be used for handover (e.g., cell handover).

[0284] The UE can receive second reference signal information. Optionally, the second reference signal information can be indicated / configured by the base station. Optionally, the second reference signal information can be indicated by the base station. Optionally, the second reference signal information can be indicated / configured through system information. Optionally, the first reference signal information and the second reference signal information can be indicated by the same parameters. Optionally, the second reference signal information indicates a reference signal. Optionally, the second reference signal information can indicate the time-domain position of the reference signal. Optionally, the second reference signal information indicates K2 reference signals. Optionally, K2 ≥ 1. Optionally, the second reference signal information can include a bitmap, wherein a bit with a first value (e.g., 1) indicates that the corresponding reference signal has been transmitted / indicated, and / or, a bit with a second value (e.g., 0) indicates that the corresponding reference signal has not been transmitted / indicated. Optionally, one bit / each bit in the bitmap corresponds to the time-domain position of a reference signal. Optionally, the K2 reference signals can include: the reference signal corresponding to each bit in the bitmap. Optionally, the K2 reference signals may include: reference signals corresponding to the bits of (all) second values ​​in the bitmap. Optionally, the K2 reference signals may be a subset of the reference signals corresponding to each bit in the bitmap. Optionally, K2 may be less than or equal to the number of bits in the bitmap. Optionally, the reference signals may be used for prediction. Optionally, the reference signals may be used for inference. Optionally, the reference signals may be used for model inference. Optionally, the reference signals may be SSB. Optionally, the reference signals may be CSI-RS. Optionally, the reference signals may be SSB and / or CSI-RS. Optionally, the type of reference signal indicated by the second reference signal information may be the same as or different from the type of reference signal indicated by the first reference signal information. Optionally, the type of reference signal may include: SSB, CSI-RS.

[0285] Optionally, the K2 reference signals can be used for link recovery. Optionally, the K2 reference signals can be used for beam failure recovery. Optionally, the K2 reference signals can be used for LTM (Low-Temperature Management). Optionally, the K2 reference signals can be used for handover (e.g., cell handover).

[0286] Optionally, at least one of the K2 reference signals is associated with a PRACH opportunity. Optionally, at least one of the K2 reference signals is associated with a PRACH opportunity based on first random access information.

[0287] Optionally, K2 reference signals are associated with PRACH opportunities. Optionally, each of the K2 reference signals is associated with a PRACH opportunity. Optionally, at least one of the K2 reference signals (or each reference signal) is associated with one or more PRACH opportunities. Optionally, at least one of the K2 reference signals (or each reference signal) is associated with X PRACH opportunities. Optionally, X can be an integer greater than or equal to 1. Optionally, X can be predefined. Optionally, X can be indicated by the base station. Optionally, X PRACH opportunities can be predefined. Optionally, X PRACH opportunities can be indicated by the base station. The value of X can be one of 1, 2, 3, 4, 5, 6, 7, or 8. Optionally, the base station indication can be indicated via first random access information. Optionally, this method can be applied to the case where the reference signal is an SSB.

[0288] Optionally, at least one of the K2 reference signals (or each reference signal) is associated with Y preambles in each PRACH opportunity. Optionally, at least one of the K2 reference signals (or each reference signal) is associated with Y preambles in each of the X PRACH opportunities. Optionally, the Y preambles can be predefined. Optionally, the Y preambles can be indicated by the base station. Optionally, Y can be predefined. Optionally, Y can be indicated by the base station. The value of Y can be an integer between 1 and 64. Optionally, the base station indication can be indicated via first random access information. Optionally, this method can be applied to the case where the reference signal is an SSB.

[0289] Optionally, K2 reference signals are associated with PRACH opportunities. Optionally, each of the K2 reference signals is associated with a PRACH opportunity. Optionally, at least one of the K2 reference signals (or each reference signal) is associated with one or more PRACH opportunities. Optionally, the one or more PRACH opportunities can be predefined or indicated by the base station. Optionally, the one or more PRACH opportunities can be indicated by an index of PRACH opportunities. Optionally, one or more PRACH opportunities associated with one / each reference signal can be predefined or indicated by the base station. Optionally, one or more PRACH opportunities associated with one / each reference signal can be indicated by an index of PRACH opportunities. Optionally, the base station indication can be indicated by first random access information. Optionally, this method can be applied to cases where the reference signal is CSI-RS.

[0290] Optionally, at least one of the K2 reference signals (or each reference signal) is associated with one or more preambles in one or more PRACH opportunities. Optionally, at least one of the K2 reference signals (or each reference signal) is associated with one or more preambles in each of the one or more PRACH opportunities. Optionally, the one or more preambles can be predefined or indicated by the base station. Optionally, the one or more preambles associated with one / each reference signal can be predefined or indicated by the base station. Optionally, the one or more preambles associated with one / each reference signal can be indicated by an index of the preamble. Optionally, the base station indication can be indicated by first random access information. Optionally, this method can be applied to cases where the reference signal is CSI-RS.

[0291] The above defines the mapping method between K2 reference signals and PRACH opportunities, allowing the UE to select reference signals from the K2 reference signals used for prediction and transmit on the associated PRACH resources. This enables the base station to obtain the reference signal resources associated with the UE's random access, facilitating scheduling in the direction corresponding to those resources and improving the reliability of the communication system. Furthermore, this method allows the number of measured reference signals to be less than the number of predicted reference signals, reducing the overhead of reference signal measurement.

[0292] Optionally, the above description of K2 reference signals also applies to the description of K2-K1 reference signals. Optionally, for the description of the mapping between reference signals and PRACH opportunities, the term "K2 reference signals" can be replaced with "K2-K1 reference signals".

[0293] Optionally, K2-K1 reference signals refer to the reference signals other than the K1 reference signals among the K2 reference signals. Optionally, K2-K1 reference signals refer to the reference signals among the K2 reference signals that are not among the K1 reference signals. Optionally, K2-K1 reference signals refer to the reference signals among the K2 reference signals whose IDs are different from the IDs of the K1 reference signals. Optionally, K2-K1 reference signals refer to the reference signals corresponding to the bits of the second value in the corresponding bitmap. Optionally, K2-K1 reference signals refer to a subset of the reference signals corresponding to the bits of the second value in the corresponding bitmap.

[0294] Optionally, the fact that reference signal A and reference signal B are the same means at least one of the following: 1) the ID value of reference signal A is the same as the ID value of reference signal B; 2) reference signal A and reference signal B are quasi-co-located; 3) reference signal A and reference signal B are mapped. Optionally, the mapping relationship between at least one of the K2 reference signals and at least one of the K1 reference signals is indicated by the base station or predefined.

[0295] Optionally, the K2 reference signals are different from the K1 reference signals. Optionally, at least one of the K2 reference signals is different from at least one of the K1 reference signals. Optionally, at least one of the K2 reference signals is different from any one of the K1 reference signals. Optionally, the K2 reference signals are different from any one of the K1 reference signals. Optionally, the K1 reference signals are different from any one of the K2 reference signals.

[0296] Optionally, reference signal A differs from reference signal B in at least one of the following ways: 1) the ID value of reference signal A is different from the ID value of reference signal B; 2) reference signal A and reference signal B are not quasi-co-located; 3) reference signal A and reference signal B are not mapped. Optionally, the mapping relationship between at least one of the K2 reference signals and at least one of the K1 reference signals is indicated by the base station or predefined.

[0297] The following section discusses the method of associating K1 reference signals with PRACH opportunities.

[0298] Optionally, the UE can receive / acquire second random access information. Optionally, the second random access information can be indicated by the base station. Optionally, the second random access information can be indicated / configured via system information. Optionally, the second random access information can be used for random access. Optionally, the second random access information can be used to configure / indicate random access parameters. Optionally, the second random access information can be cell-specific configuration information. Optionally, the second random access information can be UE-specific configuration information. Optionally, the second random access information can be specific to a single cell. Optionally, the UE can send PRACH based on the second random access information in that cell. Optionally, the first random access information and the second random access information can be specific to the same cell. This method allows PRACH transmissions for both the first and second random access information to occur within the same cell, enabling the base station to obtain uplink timing for the same cell through PRACH transmissions for the first and second random access information respectively, thus improving the flexibility of obtaining uplink synchronization for the cell.

[0299] Optionally, at least one of the K1 reference signals is associated with a PRACH opportunity. Optionally, at least one of the K1 reference signals is associated with a PRACH opportunity based on second random access information.

[0300] Optionally, K1 reference signals are associated with PRACH opportunities. Optionally, each of the K1 reference signals is associated with a PRACH opportunity. Optionally, at least one of the K1 reference signals (or each reference signal) is associated with one or more PRACH opportunities. Optionally, at least one of the K1 reference signals (or each reference signal) is associated with X1 PRACH opportunities. Optionally, X1 can be an integer greater than or equal to 1. Optionally, X1 can be predefined. Optionally, X1 can be indicated by the base station. Optionally, X1 PRACH opportunities can be predefined. Optionally, X1 PRACH opportunities can be indicated by the base station. The value of X1 can be one of 1, 2, 3, 4, 5, 6, 7, or 8. Optionally, X1 = X. Optionally, the base station indication can be indicated via second random access information. Optionally, this method can be applied to the case where the reference signal is an SSB.

[0301] Optionally, at least one of the K1 reference signals (or each reference signal) is associated with Y1 preambles in the PRACH opportunity. Optionally, at least one of the K1 reference signals (or each reference signal) is associated with Y1 preambles in each of the X1 PRACH opportunities. Optionally, the Y1 preambles can be predefined. Optionally, the Y1 preambles can be indicated by the base station. Optionally, Y1 can be predefined. Optionally, Y1 can be indicated by the base station. The value of Y1 can be an integer between 1 and 64. Optionally, Y1 = Y. Optionally, the base station indication can be indicated via second random access information. Optionally, this method can be applied to the case where the reference signal is an SSB.

[0302] Optionally, K1 reference signals are associated with PRACH opportunities. Optionally, each of the K1 reference signals is associated with a PRACH opportunity. Optionally, at least one of the K1 reference signals (or each reference signal) is associated with one or more PRACH opportunities. Optionally, the one or more PRACH opportunities can be predefined or indicated by the base station. Optionally, the one or more PRACH opportunities can be indicated by an index of PRACH opportunities. Optionally, the one or more PRACH opportunities associated with one / each reference signal can be predefined or indicated by the base station. Optionally, the one or more PRACH opportunities associated with one / each reference signal can be indicated by an index of PRACH opportunities. Optionally, the base station indication can be indicated by second random access information. Optionally, this method can be applied to cases where the reference signal is CSI-RS.

[0303] Optionally, at least one of the K1 reference signals (or each reference signal) is associated with one or more preambles in one or more PRACH opportunities. Optionally, at least one of the K1 reference signals (or each reference signal) is associated with one or more preambles in each of the one or more PRACH opportunities. Optionally, the one or more preambles can be predefined or indicated by the base station. Optionally, the one or more preambles associated with one / each reference signal can be predefined or indicated by the base station. Optionally, the one or more preambles associated with one / each reference signal can be indicated by an index of the preamble. Optionally, the base station indication can be indicated by second random access information. Optionally, this method can be applied to cases where the reference signal is CSI-RS.

[0304] In this paper, a PRACH opportunity can be a valid PRACH occasion. Optionally, a valid PRACH opportunity is determined based on the spectrum type. Optionally, the spectrum type includes: unpaired spectrum, paired spectrum, and supplementary uplink band. In this paper, the unpaired spectrum can be used for TDD. In this paper, the paired spectrum can be used for FDD.

[0305] Optionally, for paired spectrum or supplementary uplink bands, PRACH opportunities (e.g., all PRACH opportunities) are valid. For unpaired spectrum, PRACH opportunities may be valid or invalid. Optionally, valid PRACH opportunities may be determined based on the type of time-domain unit. The type of time-domain unit may include at least one of the following: uplink time-domain unit; downlink time-domain unit; flexible time-domain unit. If a PRACH opportunity is in an uplink time-domain unit, then that PRACH opportunity is valid. If a PRACH opportunity is not in an uplink time-domain unit, then that PRACH opportunity is invalid.

[0306] Optionally, the type of time-domain unit can be indicated by TDD information. Optionally, the TDD information can be used to indicate / configure TDD configuration. Optionally, the TDD information can be used to indicate / configure TDD uplink / downlink configuration (TDD UL / DL configuration). Optionally, the TDD information can be cell-specific information. Optionally, the TDD information can be UE-specific information.

[0307] The following section discusses the UE's PRACH transmission method.

[0308] Optionally, the UE may transmit PRACH on a PRACH opportunity associated with a reference signal (e.g., one or more first reference signals). In this document, "PRACH opportunity associated with the first reference signal" can be used interchangeably with "first PRACH opportunity". Optionally, the UE may transmit PRACH using a preamble associated with a reference signal (e.g., the first reference signal). Optionally, the UE may transmit PRACH using an associated preamble on a PRACH opportunity associated with a reference signal (e.g., the first reference signal).

[0309] Optionally, the UE can select / determine / predict a first reference signal. Optionally, the UE can select / determine / predict a first reference signal from K1 reference signals and / or K2 reference signals. Optionally, the UE's selection / determination / prediction of the first reference signal from K1 reference signals and / or K2 reference signals may include: the UE selecting / determining / predicting the first reference signal from K2 reference signals based on measurements of K1 reference signals.

[0310] The method for determining the first reference signal will be discussed below.

[0311] Optionally, the first reference signal is determined / predicted based on K1 reference signals (from K2 reference signals). Optionally, the first reference signal is determined / predicted based on measurements of K1 reference signals (from K2 reference signals). Optionally, the first reference signal is determined based on inference. Optionally, the first reference signal is determined based on the result of inference. Optionally, the first reference signal is determined based on inference from an AI / ML model. Optionally, the first reference signal is determined based on the result of inference from an AI / ML model. Optionally, the UE can predict using an AI / ML model. Optionally, the UE can predict using inference from an AI / ML model.

[0312] Optionally, the first reference signal is a reference signal associated with K2 reference signals. Optionally, the first reference signal is at least one of the K2 reference signals.

[0313] Optionally, the first reference signal may be a reference signal among K1 reference signals. Optionally, the first reference signal is at least one reference signal among K1 reference signals that is identical to at least one reference signal among K2 reference signals. Optionally, the UE determines the first reference signal based on a reference signal predicted from K2 reference signals. Optionally, the UE determines the first reference signal based on whether the reference signal predicted from K2 reference signals is identical to at least one reference signal among K1 reference signals. Optionally, the first reference signal is at least one reference signal among K1 reference signals that is identical to at least one reference signal predicted from K2 reference signals.

[0314] Optionally, N reference signals out of the K2 reference signals can be predicted / determined for selecting / determining / predicting the first reference signal. Optionally, the UE can select / determine / predict N reference signals out of the K2 reference signals. Optionally, N can be indicated by the base station or predefined. Optionally, N ≥ 1. Optionally, the value of N can be one of 1, 2, 3, 4, 5, 6, 7, and 8. Optionally, N can be indicated by the first random access information and / or the second random access information. Optionally, the N reference signals can be indicated by the first random access information and / or the second random access information.

[0315] Optionally, the N reference signals can be at least one of the following: 1) the N reference signals with the highest / lowest predicted RSRP among the K2 reference signals; 2) the N reference signals with predicted RSRP higher / lower than a first threshold among the K2 reference signals; 3) the N strongest / weakest reference signals among the K2 reference signals. Optionally, the first threshold can be predefined or indicated by the base station. Optionally, the first threshold can be indicated by the first random access information.

[0316] Optionally, the strongest reference signal can be the reference signal with the highest predicted probability. Optionally, the weakest reference signal can be the reference signal with the lowest predicted probability. Optionally, the strongest reference signal can be the best reference signal (top reference signal). Optionally, the weakest reference signal can be the worst reference signal (bottom reference signal). Optionally, the strongest reference signal can be the reference signal with the highest rank. Optionally, the weakest reference signal can be the reference signal with the lowest rank. The reference signal with the highest rank can be called the first-rank reference signal. The reference signal with the lowest rank can be called the last-rank reference signal.

[0317] In this document, RSRP can be either L1-RSRP or L3-RSRP. The term "RSRP" may be used interchangeably with "L1-RSRP", "L3-RSRP", "SINR", "L1-SINR", "CQI", or "RSRP".

[0318] Optionally, the first reference signal is at least one of the N reference signals. Optionally, the first reference signal can be at least one of the following: 1) the reference signal with the highest predicted RSRP among the N reference signals; 2) the reference signal with a predicted RSRP higher than / lower than a second threshold among the N reference signals; 3) the strongest reference signal among the N reference signals; 4) the X2-th strongest reference signal among the N reference signals. Optionally, X2 is an integer greater than or equal to 1. Optionally, X2 can be predefined or indicated by the base station. Optionally, the value of X2 can be one of 1, 2, 3, 4, 5, 6, 7, and 8. Optionally, X2 is greater than or equal to a third threshold, and / or, X2 is less than or equal to a fourth threshold. Optionally, the second threshold can be predefined or indicated by the base station. Optionally, the value of the second threshold can be Z dBm. Optionally, Z can be an integer. Optionally, the third threshold can be predefined or indicated by the base station. Optionally, the value of the third threshold can be an integer greater than or equal to 1. Optionally, the fourth threshold can be predefined or indicated by the base station. Optionally, the value of the fourth threshold can be an integer greater than or equal to 1.

[0319] Optionally, the first reference signal is at least one of K1 reference signals that is identical to at least one of the N reference signals. Optionally, the first reference signal is at least one of K3 reference signals among the K1 reference signals, wherein the K3 reference signals are (respectively) identical to K3 reference signals among the N reference signals. Optionally, K3 ≥ 1. Optionally, K3 ≤ N. Optionally, K3 ≤ K1. Optionally, K3 ≤ K2. Optionally, K3 can be predefined or indicated by the base station.

[0320] Optionally, the first reference signal is the second reference signal among the K3 reference signals out of the K1 reference signals, wherein the reference signal among the K2 reference signals identical to the second reference signal is at least one of the following: 1) the reference signal with the highest / lowest predicted RSRP among the K3 reference signals out of the N reference signals; 2) the reference signal with the corresponding predicted RSRP higher / lower than the fifth threshold among the K3 reference signals out of the N reference signals; 3) the strongest / weakest reference signal among the K3 reference signals out of the N reference signals. Optionally, the fifth threshold can be predefined or indicated by the base station. Optionally, the value of the fifth threshold can be Z5 dBm. Optionally, Z5 can be an integer.

[0321] The above describes a method for the UE to determine / select a first reference signal, which allows the UE to select from a relatively large number of predicted reference signals with fewer reference signal measurements, thereby reducing the UE's measurement overhead.

[0322] The following describes the conditions under which PRACH is sent and / or the conditions under which the first reference signal is selected / determined / predicted.

[0323] Optionally, the transmission of PRACH is determined based on a comparison of the measurements of K1 reference signals with a sixth threshold. Alternatively, whether or not PRACH is transmitted is determined based on a comparison of the measurements of K1 reference signals with a sixth threshold. For example, PRACH is transmitted when the RSRP of at least one of the K1 reference signals is higher than the sixth threshold. For example, PRACH is not transmitted when the RSRP of all the K1 reference signals is lower than the sixth threshold. For example, PRACH is transmitted when the RSRP of all the K1 reference signals is higher than the sixth threshold. For example, PRACH is not transmitted when the RSRP of at least one of the K1 reference signals is lower than the sixth threshold. Here, RSRP can be the measured RSRP.

[0324] Optionally, the determination / selection / prediction of the first reference signal is based on a comparison of the measurements of K1 reference signals with a sixth threshold. Optionally, whether the first reference signal is determined / selected / predicted is determined based on a comparison of the measurements of K1 reference signals with a sixth threshold. For example, when the RSRP of at least one of the K1 reference signals is higher than the sixth threshold, the UE determines / selects / predicts the first reference signal. For example, when the RSRP of all the reference signals in the K1 reference signals is lower than the sixth threshold, the UE is uncertain / does not select / predict the first reference signal. For example, when the RSRP of all the reference signals in the K1 reference signals is higher than the sixth threshold, the UE determines / selects / predicts the first reference signal. For example, when the RSRP of at least one of the K1 reference signals is lower than the sixth threshold, the UE is uncertain / does not select / predict the first reference signal. Here, RSRP can be a measured RSRP.

[0325] Optionally, the sixth threshold can be predefined or indicated by the base station. Optionally, the value of the sixth threshold can be an integer greater than or equal to 1. Optionally, the value of the sixth threshold can be Z6 dBm. Optionally, Z6 can be an integer.

[0326] The above method enables the UE to enable PRACH transmission or select the first reference signal when the measured value of the reference signal is higher than a certain threshold, ensuring the accuracy of the prediction result of the reference signal used for prediction, thereby improving the reliability of the communication system.

[0327] Figure 5A method 500 performed by a base station according to various embodiments of the present disclosure is illustrated. Method 500 includes: at 510, transmitting first random access information for random access, the first random access information indicating a PRACH opportunity for transmitting a Physical Random Access Channel (PRACH); at 520, transmitting first reference signal information indicating K1 reference signals for measurement, K1 being an integer greater than or equal to 1; at 530, transmitting second reference signal information indicating K2 reference signals for prediction, K2 being an integer greater than or equal to 1; and at 540, receiving a PRACH on a first PRACH opportunity associated with the first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on measurements of the K1 reference signals, and the first reference signal is a reference signal among the K1 reference signals and / or the K2 reference signals.

[0328] Figure 6 The structure 600 of a user equipment according to various embodiments of the present disclosure is shown. For example... Figure 6 As shown, user equipment 600 includes a controller 610 and a transceiver 620, wherein the controller 610 is configured to perform the various methods disclosed herein performed by the user equipment, and the transceiver 620 is configured to transmit and receive channels or signals.

[0329] Figure 7 The structure 700 of a base station according to various embodiments of the present disclosure is shown. For example... Figure 7 As shown, network device 700 includes a controller 710 and a transceiver 720, wherein the controller 710 is configured to perform various methods performed by network devices as disclosed herein, and the transceiver 720 is configured to transmit and receive channels or signals.

[0330] Furthermore, “at least one / at least one” as described in this disclosure includes any and / or all possible combinations of the listed items, the various embodiments described in this disclosure and the various examples in the embodiments can be changed and combined in any suitable form, and “ / ” as described in this disclosure means “or”.

[0331] The various illustrative logic blocks, modules, and circuits described in this disclosure may be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternative embodiments, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0332] The steps of the methods or algorithms described in this disclosure may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information to / from the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and storage medium may reside as discrete components in the user terminal.

[0333] In one or more exemplary designs, the functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, the latter including any medium that facilitates the transfer of a computer program from one location to another. Storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0334] The description set forth herein, taken in conjunction with the accompanying drawings, describes exemplary configurations, methods, and apparatuses, and does not represent all examples that can be implemented or that fall within the scope of the claims. As used herein, the term "example" means "serving as an example, instance, or illustration," and not "preferred" or "superior to other examples." The detailed description includes specific details intended to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0335] Although this specification contains details of various specific implementations, these should not be construed as limiting any invention or the scope of the claims, but rather as descriptions of specific features of particular embodiments of a particular invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually in multiple embodiments or in any suitable sub-combination. Furthermore, although features may be described above as functioning in certain combinations, and even initially claimed as such, in some cases one or more features from a claimed combination may be removed from that combination, and the claimed combination may be for sub-combinations or variations thereof.

[0336] It should be understood that the specific order or hierarchy of steps in the methods of this disclosure is an illustration of an exemplary process. Based on design preferences, it is understood that the specific order or hierarchy of steps in the method can be rearranged to achieve the functions and effects disclosed in this disclosure. The appended method claims present the elements of various steps in an exemplary order and are not intended to limit one to the specific order or hierarchy presented, unless otherwise specifically stated. Furthermore, although elements may be described or claimed in the singular, the plural is also contemplated unless a limitation on the singular is expressly stated. Therefore, this disclosure is not limited to the examples shown, and any means for performing the functions described herein are included in various aspects of this disclosure.

[0337] The text and accompanying drawings are provided by way of example only to aid the reader in understanding this disclosure. They are not intended and should not be construed as limiting the scope of this disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based on the content disclosed herein, that changes may be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

Claims

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising: Receive first random access information for random access, the first random access information indicating a PRACH opportunity for transmitting the Physical Random Access Channel (PRACH); Receive first information indicating K1 reference signals for measurement, where K1 is an integer greater than or equal to 1; Receive second information indicating K2 reference signals for prediction, where K2 is an integer greater than or equal to 1; A PRACH is transmitted on a first PRACH opportunity associated with a first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on measurements of the K1 reference signals, and the first reference signal is a reference signal among the K1 reference signals and / or the K2 reference signals.

2. The method according to claim 1, wherein, The K2 reference signals are associated with the PRACH opportunity based on the first random access information; or... Of the K2 reference signals, the K2-K1 reference signals, excluding the K1 reference signals, are associated with the PRACH opportunity based on the first random access information.

3. The method according to claim 2, wherein, When the K2 reference signals are synchronization signals / physical broadcast channel blocks (SSBs), each of the K2 reference signals or the K2-K1 reference signals is associated with X PRACH opportunities, where X is an integer indicated by the first information.

4. The method according to claim 3, wherein, Each of the X PRACH opportunities is associated with Y preambles, where Y is an integer indicated by the first information.

5. The method according to claim 2, wherein, When the K2 reference signals are Channel State Information Reference Signals (CSI-RS), the index of the PRACH opportunity associated with each of the K2 reference signals or the K2-K1 reference signals is indicated by the first random access information.

6. The method according to claim 5, wherein, The index of the preamble associated with each of the K2 reference signals or each of the K2-K1 reference signals is indicated by the first random access information.

7. The method according to any one of claims 1-6, further comprising: Receive the second random access information for random access. The K1 reference signals are associated with the PRACH opportunity based on the second random access information.

8. The method according to claim 7, wherein, When the K1 reference signals are SSBs, each of the K1 reference signals is associated with X1 PRACH opportunities, where X1 is an integer indicated by the second information.

9. The method according to claim 8, wherein, Each of the X1 PRACH opportunities is associated with Y1 preambles, where Y1 is an integer indicated by the second information.

10. The method according to any one of claims 1-9, wherein, The preamble used by PRACH is related to the first reference signal.

11. The method according to any one of claims 1-10, wherein, The first reference signal is at least one of the N reference signals, or the first reference signal is at least one of the K1 reference signals that is the same as at least one of the N reference signals. Wherein, the N reference signals are N predicted reference signals among the K2 reference signals, N is an integer greater than or equal to 1, and N is predefined or indicated by the first random access information.

12. The method according to claim 11, wherein, The N reference signals include at least one of the following: The N reference signals with the highest predicted reference signal received power (RSRP) among the K2 reference signals; Among the K2 reference signals, there are N reference signals whose predicted RSRP is higher than the first threshold; The N strongest reference signals among the K2 reference signals, The first threshold is either predefined, indicated by the base station, or indicated by the first random access information.

13. The method according to claim 11 or 12, wherein, The first reference signal includes at least one of the following: The reference signal with the highest predicted RSRP among the N reference signals; The reference signal whose predicted RSRP is higher than the second threshold among the N reference signals; The strongest reference signal among the N reference signals; The X2-th strongest reference signal among the N reference signals, where X2 is an integer greater than or equal to the third threshold and / or less than or equal to the fourth threshold. The second threshold, the third threshold, and the fourth threshold are either predefined or indicated by the base station.

14. The method according to claim 11, wherein, The first reference signal is at least one of the K3 reference signals among the K1 reference signals, wherein the K3 reference signals are the same as the K3 reference signals among the N reference signals, and K3 is an integer greater than or equal to 1.

15. The method according to claim 14, wherein, The first reference signal is the second reference signal among the K3 reference signals out of the K1 reference signals, wherein the reference signal among the K2 reference signals that is identical to the second reference signal is at least one of the following: The reference signal with the highest predicted RSRP among the K3 reference signals out of the N reference signals; The reference signal whose predicted RSRP is higher than the fifth threshold among the K3 reference signals out of the N reference signals; The strongest reference signal among the K3 reference signals out of the N reference signals. The fifth threshold is either predefined or indicated by the base station.

16. The method according to any one of claims 1-15, wherein, The PRACH is sent when the measured RSRP of at least one of the K1 reference signals is higher than the sixth threshold. The sixth threshold is either predefined or indicated by the base station.

17. A method performed by a base station in a wireless communication system, the method comprising: Send first random access information for random access, the first random access information indicating a PRACH opportunity for sending the Physical Random Access Channel (PRACH); Send the first information indicating K1 reference signals for measurement, where K1 is an integer greater than or equal to 1; Send second information indicating K2 reference signals for prediction, where K2 is an integer greater than or equal to 1; A PRACH is received on a first PRACH opportunity associated with a first reference signal in the PRACH opportunity, wherein the first reference signal is determined based on measurements of the K1 reference signals, and the first reference signal is a reference signal among the K1 reference signals and / or the K2 reference signals.

18. The method according to claim 1, wherein, The K2 reference signals are associated with the PRACH opportunity based on the first random access information; or... Of the K2 reference signals, the K2-K1 reference signals, excluding the K1 reference signals, are associated with the PRACH opportunity based on the first random access information.

19. A user equipment, comprising: transceiver; as well as A controller, coupled to the transceiver, is configured to perform the method according to any one of claims 1-16.

20. A base station, comprising: transceiver; as well as A controller, coupled to the transceiver, is configured to perform the method according to claim 17 or 18.

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