Method and device for adaptive early transmission using guard period in time division duplex system

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates than 4G communication systems such as LTE. A method for operating a user equipment (UE) in a wireless communication system according to an embodiment of the present disclosure may comprise the steps of: receiving, from a base station, a control message including uplink resource information for adaptive early transmission; receiving, from the base station, an activation message for activating the adaptive early transmission; and transmitting an uplink signal to the base station in a guard period on the basis of the activation message and the uplink resource information for the adaptive early transmission.

Description

Adaptive early transmission method and device using guard interval in time division duplex system

[0001] The present disclosure relates to an electronic device for controlling uplink (UL) signal transmission timing for signal transmission and reception within a guard period in a TDD (time division duplex) system and an operating method thereof.

[0002] Looking back at the evolution of wireless communication over successive generations, technologies have primarily been developed for human-facing services such as voice, multimedia, and data. With the commercialization of 5G (5th-generation) communication systems, an explosive increase in connected devices is expected to be connected to communication networks. Examples of networked objects include vehicles, robots, drones, home appliances, displays, smart sensors installed in various infrastructures, construction equipment, and factory equipment. Mobile devices are expected to evolve into diverse form factors, including augmented reality glasses, virtual reality headsets, and holographic devices. In the 6th-generation (6G) era, efforts are being made to develop improved 6G communication systems to connect hundreds of billions of devices and objects and provide diverse services. For this reason, 6G communication systems are often referred to as "beyond 5G."

[0003] The 6G communication system, expected to be realized around 2030, will have a maximum transmission speed of terabytes per second (i.e., 1,000 gigabits per second) and a wireless latency of 100 microseconds (μsec). In other words, compared to 5G, the transmission speed in a 6G communication system will be 50 times faster, while the wireless latency will be reduced to one-tenth.

[0004] To achieve these high data rates and ultra-low latency, 6G communication systems are being considered for implementation in the terahertz band (e.g., from 95 gigahertz (GHz) to 3 terahertz (THz)). Compared to the millimeter wave (mmWave) band introduced in 5G, the terahertz band is expected to experience more severe path loss and atmospheric absorption, making it more crucial to ensure signal reach, or coverage, in this band. Key technologies to ensure coverage include radio frequency (RF) components, antennas, new waveforms that offer better coverage than OFDM (orthogonal frequency division multiplexing), beamforming, and multiple antenna transmission technologies such as massive multiple-input and multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, and large-scale antennas. In addition, new technologies such as metamaterial-based lenses and antennas, high-dimensional spatial multiplexing using orbital angular momentum (OAM), and reconfigurable intelligent surfaces (RIS) are being discussed to improve the coverage of terahertz band signals.

[0005] In addition, in order to improve frequency efficiency and system network, 6G communication systems are developing full duplex technology that utilizes the same frequency resources at the same time for uplink and downlink; network technology that integrates satellites and high-altitude platform stations (HAPS); network structure innovation technology that supports mobile base stations and enables optimization and automation of network operation; dynamic spectrum sharing technology through collision avoidance based on spectrum usage prediction; AI-based communication technology that utilizes artificial intelligence (AI) from the design stage and internalizes end-to-end AI support functions to realize system optimization; and next-generation distributed computing technology that realizes services with complexity that exceeds the limits of terminal computing capabilities by utilizing ultra-high-performance communication and computing resources (mobile edge computing (MEC), cloud, etc.). In addition, efforts are being made to further strengthen connectivity between devices, further optimize networks, promote softwareization of network entities, and increase the openness of wireless communications through the design of new protocols to be used in 6G communication systems, the implementation of hardware-based security environments, the development of mechanisms for the safe use of data, and the development of technologies for maintaining privacy.

[0006] Research and development of these 6G communication systems are expected to enable a new level of hyper-connected experience through the hyper-connectivity of 6G communication systems, which encompass not only connections between things but also connections between people and things. Specifically, 6G communication systems are expected to enable services such as truly immersive extended reality (Truly Immersive XR), high-fidelity mobile holograms, and digital replicas. Furthermore, services such as remote surgery, industrial automation, and emergency response, which are provided through enhanced security and reliability, will find application in diverse fields such as industry, healthcare, automotive, and home appliances.

[0007] The present disclosure relates to a method for utilizing idle resources within a guard period while taking into account propagation delay between a base station and a terminal.

[0008] A method for operating a user equipment (UE) in a wireless communication system according to one embodiment of the present disclosure may include: receiving a control message including uplink resource information for adaptive early transmission from a base station; receiving an activation message for activating the adaptive early transmission from the base station; and transmitting an uplink signal to the base station in a guard period based on the activation message and the uplink resource information for the adaptive early transmission.

[0009] A method of operating a base station in a wireless communication system according to one embodiment of the present disclosure may include: transmitting a control message including uplink resource information for adaptive early transmission to a user equipment (UE); transmitting an activation message for activating the adaptive early transmission to the UE; and receiving an uplink signal transmitted in a guard period from the UE based on the activation message and the uplink resource information for the adaptive early transmission.

[0010] In a wireless communication system according to one embodiment of the present disclosure, a user equipment (UE) includes a transceiver; and a processor. The processor may receive a control message including uplink resource information for adaptive early transmission from a base station, receive an activation message for activating the adaptive early transmission from the base station, and transmit an uplink signal to the base station in a guard period based on the activation message and the uplink resource information for the adaptive early transmission.

[0011] In a wireless communication system according to one embodiment of the present disclosure, a base station includes a transceiver; and a processor. The processor can transmit a control message including uplink resource information for adaptive early transmission to a user equipment (UE), transmit an activation message for activating the adaptive early transmission to the UE, and receive an uplink signal transmitted in a guard period from the UE based on the activation message and the uplink resource information for the adaptive early transmission.

[0012] An embodiment according to the present disclosure provides a device and method capable of effectively providing a service in a mobile communication system by implementing additional UL signal transmission by effectively utilizing idle resources within a guard period, taking into account propagation delay between a base station and a terminal.

[0013] FIG. 1 illustrates an example of performing additional UL signal transmission using idle resources of a guard period according to one embodiment of the present disclosure.

[0014] FIG. 2 illustrates an example of applying an adaptive early transmission method according to one embodiment of the present disclosure to periodic / semi-persistent SRS.

[0015] FIG. 3 illustrates an example of applying an adaptive early transmission method according to one embodiment of the present disclosure to a periodic / semi-persistent CSI report.

[0016] FIG. 4 is a diagram illustrating a process for setting up adaptive early transmission according to one embodiment of the present disclosure.

[0017] FIG. 5 is a diagram for explaining SRS resource setting for adaptive early transmission according to one embodiment of the present disclosure.

[0018] FIG. 6 is a diagram for explaining CSI report settings for adaptive early transmission according to one embodiment of the present disclosure.

[0019] FIG. 7 is a diagram illustrating a method for a UE and a network to apply adaptive early transmission to an SRS resource configuration according to one embodiment of the present disclosure.

[0020] FIG. 8 is a diagram illustrating a method for a UE and a network to apply adaptive early transmission to a CSI report configuration according to one embodiment of the present disclosure.

[0021] FIG. 9 is a diagram showing the configuration of a UE according to an embodiment of the present disclosure.

[0022] FIG. 10 is a diagram showing the configuration of a base station according to an embodiment of the present disclosure.

[0023] FIG. 11 is a diagram for explaining the operation of a UE according to an embodiment of the present disclosure.

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. It should be noted that, where possible, identical components are represented by identical reference numerals throughout the attached drawings. Furthermore, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted.

[0025] In describing the embodiments herein, descriptions of technical details that are well known in the technical field to which the present disclosure pertains and are not directly related to the present invention will be omitted. This is to avoid obscuring the gist of the present disclosure by omitting unnecessary explanations and to convey the gist more clearly.

[0026] For the same reason, some components in the attached drawings are exaggerated, omitted, or schematically depicted. Furthermore, the dimensions of each component do not entirely reflect its actual size. Identical or corresponding components in each drawing are assigned the same reference numbers.

[0027] The advantages and features of the present disclosure, and methods for achieving them, will become clearer with reference to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present disclosure is complete and to fully inform those skilled in the art of the scope of the disclosure, and the present disclosure is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

[0028] At this time, it will be understood that each block of the processing flowchart drawings and combinations of the flowchart drawings can be performed by computer program instructions. These computer program instructions can be installed in a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, so that the instructions executed by the processor of the computer or other programmable data processing equipment create a means for performing the functions described in the flowchart block(s). These computer program instructions can also be stored in a computer-available or computer-readable memory that can direct a computer or other programmable data processing equipment to implement the functions in a specific manner, so that the instructions stored in the computer-available or computer-readable memory can also produce a manufactured item that includes an instruction means for performing the functions described in the flowchart block(s). Since the computer program instructions may be installed on a computer or other programmable data processing device, a series of operational steps may be performed on the computer or other programmable data processing device to create a computer-executable process, and the instructions that cause the computer or other programmable data processing device to perform the steps for performing the functions described in the flowchart block(s) may also provide steps for performing the functions described in the flowchart block(s).

[0029] Additionally, each block may represent a module, segment, or portion of code that contains one or more executable instructions for performing a specific logical function(s). It should also be noted that in some alternative implementation examples, the functions described in the blocks may occur out of order. For example, two blocks depicted in succession may actually be executed substantially concurrently, or the blocks may sometimes be executed in reverse order, depending on their respective functions.

[0030] Here, the term '~ unit' used in the present embodiment means a software or hardware component such as an FPGA or ASIC, and the '~ unit' performs certain roles. However, the '~ unit' is not limited to software or hardware. The '~ unit' may be configured to be on an addressable storage medium and may be configured to play one or more processors. Accordingly, as an example, the '~ unit' includes components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided within the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. Additionally, components and '~parts' may be implemented to regenerate one or more CPUs within a device or secure multimedia card.

[0031] Hereinafter, a terminal may include a UE (User Equipment), an NG UE (NextGeneration UE), an MS (Mobile Station), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing a communication function. In addition, although the embodiments of the present disclosure are described below using a 5G system as an example, the embodiments of the present disclosure may be applied to other communication systems with similar technical backgrounds. In addition, the embodiments of the present disclosure may be applied to other communication systems with some modifications within a scope that does not significantly deviate from the scope of the present disclosure, as determined by a person having skilled technical knowledge.

[0032] Hereinafter, the base station is an entity that performs resource allocation of a terminal, and may be at least one of a Node B, a BS (Base Station), an eNB (eNode B), a gNB (gNode B), a wireless access unit, a base station controller, or a node on a network. The terminal may include a UE (User Equipment), an MS (Mobile Station), a cellular phone, a smartphone, a computer, or a multimedia system capable of performing a communication function. In addition, the embodiments of the present disclosure may be applied to other communication systems having a similar technical background or channel type to the embodiments of the present disclosure described below. In addition, the embodiments of the present disclosure may be applied to other communication systems through some modifications without significantly departing from the scope of the present disclosure at the discretion of a person having skilled technical knowledge.

[0033] In the following description, terms used to identify connection nodes, terms referring to network entities or network functions (NFs), terms referring to messages, terms referring to interfaces between network objects, terms referring to various identification information, etc. are provided as examples for convenience of explanation. Therefore, the present disclosure is not limited to the terms described below, and other terms referring to objects having equivalent technical meanings may be used.

[0034] For convenience of explanation, some terms and names defined in the 3rd generation partnership project long-term evolution (3GPP) standards may be used. However, the present disclosure is not limited to these terms and names, and can be equally applied to systems conforming to other standards.

[0035] The terms used in this disclosure are used only to describe specific embodiments and may not be intended to limit the scope of other embodiments. The singular expression may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by those of ordinary skill in the art described in this disclosure. Terms defined in general dictionaries among the terms used in this disclosure may be interpreted as having the same or similar meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in this disclosure. In some cases, even if a term is defined in this disclosure, it cannot be interpreted to exclude embodiments of the present disclosure.

[0036] The various embodiments of the present disclosure described below illustrate a hardware-based approach as an example. However, since the various embodiments of the present disclosure include techniques utilizing both hardware and software, the various embodiments of the present disclosure do not exclude a software-based approach.

[0037] FIG. 1 illustrates an example of performing additional UL signal transmission using idle resources of a guard period according to one embodiment of the present disclosure.

[0038] Referring to FIG. 1, BS (100) can transmit and receive downlink signals and / or uplink signals with UE1 (110) and UE2 (120) based on TDD configuration. Based on the TDD configuration, time resources allocated to downlink signals are indicated by "D", time resources allocated to uplink signals are indicated by "U", and a guard period can be set for time resources between the time resources allocated to downlink signals and the time resources allocated to uplink signals.

[0039] The distance between BS (100) and UE1 (110) may be shorter than the distance between BS (100) and UE2 (120), and the first propagation delay between BS (100) and UE1 (110) ) is the second propagation delay between BS (100) and UE2 (120). ) may be smaller.

[0040] The T0 period represents the idle time from when the downlink signal reception of UE1 (110) is completed until the uplink signal transmission is performed. The T1 period represents the time that UE1 (110) must wait at T0 until the downlink signal reception of UE2 (120) is completed. The T2 period (= T0-T1) represents the time from when the downlink signal reception of UE2 (120) is completed until the uplink signal transmission of UE1 (110).

[0041] Additional uplink signal transmission within idle resources within the guard period may be possible after reception of the downlink signal of the UE furthest from the BS (100) is completed in order to avoid interference (UL-to-DL). When UE1 (110) transmits an uplink signal in the T1 period, the uplink signal transmitted by UE1 (110) may act as interference (UL-to-DL) for the downlink signal received by UE2 (120) from the BS (100).

[0042] First propagation delay ( ) is the second propagation delay ( ) is smaller than that of UE1 (110), the waiting time for uplink signal transmission after receiving a downlink signal may be relatively longer than that of UE2 (120). In the case of UE1 (110) which is close to BS (100), uplink signal transmission may be possible within a guard period after reception of a downlink signal of UE2 (120) which is far from BS (100) is completed (i.e., T2 period). According to one embodiment, the uplink signal that can be transmitted within the guard period may include at least one of a sounding reference signal (SRS), a physical uplink shared channel (PUSCH) signal, and a physical uplink control channel (PUCCH) signal.

[0043] In one embodiment, as the number of UE antenna ports increases in a 6G communication environment, it is expected that more SRS resources will be required, and 6G multi-layer transmission can be supported while minimizing additional uplink resource consumption by utilizing idle resources within a guard period.

[0044] In one embodiment, the extent to which idle resources can be utilized within a guard period varies depending on the locations of UEs, making it difficult to fixally allocate idle resources within a guard period as uplink (UL) resources, and flexible operation that takes into account the locations of UEs may be possible.

[0045] As an example of an adaptive early transmission operation, for periodic / semi-persistent uplink signal transmission (SRS, PUCCH, PUSCH) in idle resources of a guard period, BS (100) may transmit control information to UE1 (110), and UE1 (110) may perform adaptive early transmission based on the control information. According to one embodiment, BS (100) may transmit separate control information other than the control information to UE1 (110) for deactivation of adaptive early transmission.

[0046] According to one embodiment, BS (100) may transmit control information for adaptive early transmission to UE1 (110) via MAC (medium access control) CE (control element). According to one embodiment, the control information for adaptive early transmission may include at least one of uplink resource information to which adaptive early transmission is to be applied, a TA (timing advance) value that determines how much earlier uplink signal transmission is to be performed than a periodic / semi-persistent uplink signal transmission time that the UE already knows, an adaptive early transmission start time, and an adaptive early transmission duration.

[0047] According to one embodiment, uplink resource information to which adaptive early transmission is to be applied may include at least one of a resource ID, a resource set ID, and a channel state information (CSI) report configuration ID.

[0048] According to one embodiment, the TA value for adaptive early transmission is in sampling time units (N TC ; T c = sampling time), symbol units (M symbols), and absolute time values ​​(T sec). In one embodiment, the TA value for adaptive early transmission may be determined based on the propagation delay of the corresponding UE.

[0049] In one embodiment, when a slot to which an uplink (UL) resource belongs changes due to adaptive early transmission, control information for adaptive early transmission may include information about the changed slot.

[0050] In one embodiment, the adaptive early transmission start time is a slot offset (K from the time the control signal is received). S It may include at least one of the following: SFN (system frame number), subframe number, slot number, and symbol position (applied from after slot).

[0051] According to one embodiment, the adaptive early transmission duration may include at least one of time information, the number of uplink (UL) signal transmissions from a start time of the adaptive early transmission, and the duration information for which the adaptive early transmission lasts.

[0052] According to one embodiment, BS (100) may transmit control information for deactivation of adaptive early transmission to UE1 (110) via MAC CE and / or downlink control information (DCI).

[0053] According to one embodiment, the control information for deactivation of the adaptive early transmission may include at least one of an indicator indicating termination of the adaptive early transmission, uplink (UL) resource information for terminating the adaptive early transmission, and a time point of stopping the adaptive early transmission. The uplink resource information may include at least one of a resource ID, a resource set ID, and a CSI report configuration ID. According to one embodiment, the control information for deactivation of the adaptive early transmission may include a slot offset (K from the time point of receiving the control signal) to indicate a time point of stopping the adaptive early transmission. E It may include at least one of the following: SFN (system frame number), subframe number, slot number, and symbol position (applied from after slot).

[0054] FIG. 2 illustrates an example of applying an adaptive early transmission method according to one embodiment of the present disclosure to periodic / semi-persistent SRS.

[0055] Referring to FIG. 2, a base station may transmit (or set) control information for adaptive early transmission to a UE in slot 0. According to an embodiment, symbols included in slot 0 may be allocated as time resources for downlink (DL) signal transmission and reception. According to an embodiment, the control information for the adaptive early transmission includes an SRS resource ID (e.g., SRS resource ID = V), symbol information to which adaptive early transmission will be applied (e.g., ahead of 4 symbols), and slot offset information to which adaptive early transmission will be applied (e.g., slot offset = K). A ) may include at least one of the following: According to one embodiment, the base station may transmit (or set) control information for the adaptive early transmission to the UE via MAC CE and / or DCI.

[0056] The UE may transmit an SRS based on a preset SRS resource ID (e.g., SRS resource ID = V) in slot 1. According to one embodiment, symbols included in slot 1 may be allocated as time resources for downlink (DL) signal transmission and reception, a guard period, and time resources for uplink (UL) signal transmission and reception.

[0057] The UE selects slot K based on the control information for adaptive early transmission. A Adaptive early transmission can be initiated in slot K. AIn the UE, the SRS can be transmitted in a symbol that is set to be a symbol (e.g., 4 symbols) ahead of a preset SRS resource ID (e.g., SRS resource ID = V). According to one embodiment, in slot K A The symbols included in can be allocated as time resources for downlink (DL) signal transmission and reception, a guard period, and time resources for uplink (UL) signal transmission and reception.

[0058] The base station may transmit control information for deactivation of adaptive early transmission in slot J to the UE. According to one embodiment, symbols included in slot J may be allocated as time resources for downlink (DL) signal transmission and reception. According to one embodiment, the control information for deactivation of the adaptive early transmission includes a deactivation indicator, an SRS resource ID (e.g., SRS resource ID = V), and a slot offset (e.g., slot offset = K) at which deactivation of the adaptive early transmission starts. D ) may include at least one of the following: According to one embodiment, the base station may transmit (or set) control information for deactivation of the adaptive early transmission to the UE via MAC CE and / or DCI.

[0059] UE is slot J+K DIn the adaptive early transmission, the adaptive early transmission may be stopped based on the control information for deactivation of the adaptive early transmission, and the SRS may be transmitted based on the previously set SRS resource ID (e.g., SRS resource ID = V). According to one embodiment, slot J+K D The symbols included in can be allocated as time resources for downlink (DL) signal transmission and reception, a guard period, and time resources for uplink (UL) signal transmission and reception.

[0060] FIG. 3 illustrates an example of applying an adaptive early transmission method according to one embodiment of the present disclosure to a periodic / semi-persistent CSI report.

[0061] Referring to (a) of FIG. 3, symbols included in slot 0 may be allocated as time resources for downlink (DL) signal transmission and reception. According to one embodiment, the base station may transmit a downlink signal to the UE in slot 0.

[0062] The symbols included in slot K0-1 can be allocated as time resources for downlink (DL) signal transmission and reception, a guard period, and time resources for uplink (UL) signal transmission and reception.

[0063] The UE may transmit a periodic / semi-persistent CSI report to the base station via a physical uplink control channel (PUCCH) and / or a physical uplink shared channel (PUSCH) in slot K0. In one embodiment, the periodic / semi-persistent CSI report transmitted in slot K0 may be a report related to a downlink signal received by the UE in slot 0. In one embodiment, a CSI report configuration ID (e.g., CSI report configuration ID = R) may be set for a PUCCH / PUSCH resource on which the periodic / semi-persistent CSI report is transmitted.

[0064] Referring to (b) of FIG. 3, symbols included in slot 0 may be allocated as time resources for downlink (DL) signal transmission and reception. According to one embodiment, the base station may transmit a downlink signal to the UE in slot 0.

[0065] The UE may perform adaptive early transmission in slot K0-1 based on the control information for adaptive early transmission received from the base station. The UE may transmit a preset periodic / semi-persistent CSI report in slot K0-1 (e.g., within slot K0). A periodic / semi-persistent CSI report may be transmitted a predetermined number of symbols (e.g., 7 symbols) ahead of a plurality of symbols. According to one embodiment, the control information for the adaptive early transmission may include at least one of a CSI report configuration ID (e.g., CSI report configuration ID = R) for a PUCCH / PUSCH resource on which the periodic / semi-persistent CSI report is transmitted and symbol information (or symbol offset) for the adaptive early transmission.

[0066] FIG. 4 is a diagram illustrating a process for setting up adaptive early transmission according to one embodiment of the present disclosure.

[0067] To reduce the signaling overhead of the adaptive early transmission operation, the base station may configure information for adaptive early transmission to the UE through RRC signaling. In one embodiment, the base station may configure the activation and / or deactivation of adaptive early transmission to the UE through MAC CE or DCI.

[0068] Referring to (1) of FIG. 4, the base station can set a total of M (e.g., M=64) adaptive early transmission states through RRC signaling. In the present disclosure, the total of M adaptive early transmission states may also be referred to as a full set configuration.

[0069] Referring to (1) of Fig. 4, the full set configuration can be indexed differently based on the slot offset indicating the start time of the adaptive early transmission and the symbol information (Ahead of # symbols) indicating how early the adaptive early transmission starts.

[0070] For example, if the slot offset is 1 and the symbol information (Ahead of # symbols) is 1, the full state index can be set to 0. For example, if the slot offset is 1 and the symbol information (Ahead of # symbols) is 2, the full state index can be set to 1. For example, if the slot offset is 16 and the symbol information (Ahead of # symbols) is 4, the full state index can be set to 63.

[0071] According to one embodiment, an adaptive early transmission state may be indexed (or set) based on a parameter set including at least one of an adaptive early transmission start time, a TA value for the adaptive early transmission, and configuration information for the adaptive early transmission.

[0072] In one embodiment, after transmitting a full set configuration, the base station may set N (e.g., N=8) states (i.e., a subset configuration) from among M (e.g., M=64) states to the UE using MAC CE to reduce signaling overhead. N (i.e., set size) of the subset configuration and the subset configuration configuration (i.e., N states) may be updated.

[0073] Referring to (2) of FIG. 4, the subset configuration can be indexed differently based on a full state index, a slot offset indicating the start time of adaptive early transmission, and symbol information (Ahead of # symbols) indicating how early the adaptive early transmission starts.

[0074] For example, if the full state index is 0, the slot offset is 1, and the symbol information (Ahead of # symbols) is 1, the subset state index can be set to 0. For example, if the full state index is 1, the slot offset is 1, and the symbol information (Ahead of # symbols) is 2, the subset state index can be set to 1. For example, if the full state index is 13, the slot offset is 4, and the symbol information (Ahead of # symbols) is 2, the subset state index can be set to 7.

[0075] In one embodiment, when M is small, the subset configuration illustrated in (2) of FIG. 4 may be omitted.

[0076] Referring to (3) of FIG. 4, the base station may set uplink (UL) resource information to which adaptive early transmission is to be applied through MAC CE or DCI based on the full set configuration and / or the subset configuration, and activate at least one state among N states. According to one embodiment, the activation information transmitted from the base station to the UE through MAC CE or DCI may include an SRS resource ID (e.g., SRS resource ID = 1) and a subset state index (e.g., subset state index = 3).

[0077] For example, when N=8, the subset state index can be set to 3 bits. For example, when the subset configuration is not set and M=64, the subset state index can be set to 6 bits to indicate an index for the full set configuration.

[0078] Referring to (4) of FIG. 4, the base station may deactivate adaptive early transmission by indicating uplink (UL) resource information and a stop point for adaptive early transmission through MAC CE or DCI based on the full set configuration and / or the subset configuration. According to one embodiment, the deactivation information transmitted from the base station to the UE through MAC CE or DCI may include at least one of a deactivation indicator, an SRS resource ID (e.g., SRS resource ID = 1), and a deactivation slot offset (e.g., deactivation slot offset = 3).

[0079] In one embodiment, if the base station needs to apply an adaptive early transmission different from the one indicated, the base station may transmit activation signaling for the adaptive early transmission to the UE without deactivating the adaptive early transmission.

[0080] FIG. 5 is a diagram for explaining SRS resource setting for adaptive early transmission according to one embodiment of the present disclosure.

[0081] Referring to (1) of FIG. 5, the base station can set a total of M (e.g., M=64) adaptive early transmission states through RRC signaling. In the present disclosure, the total of M adaptive early transmission states may also be referred to as a full set configuration.

[0082] Referring to (1) of FIG. 5, the full set configuration can be indexed differently based on the slot offset indicating the start time of the adaptive early transmission and the symbol information (Ahead of # symbols) indicating how early the adaptive early transmission starts.

[0083] According to one embodiment, an adaptive early transmission state may be indexed (or set) based on a parameter set including at least one of an adaptive early transmission start time, a TA value for the adaptive early transmission, and configuration information for the adaptive early transmission.

[0084] In one embodiment, the base station may set N (e.g., N=4) states (i.e., a subset configuration) out of M (e.g., M=64) states to the UE as MAC CE after transmitting the full set configuration to reduce signaling overhead.

[0085] Referring to (2) of FIG. 5, the base station can transmit (or set) an uplink (UL) resource configuration including a subset configuration to the UE. According to one embodiment, the UL resource configuration can be an SRS resource configuration IE (information element) transmitted via RRC signaling. N (i.e., set size) of the subset configuration and the subset configuration configuration (i.e., N states) can be updated through reconfiguration of the UL resource configuration.

[0086] In one embodiment, the SRS resource configuration IE may include at least one of an SRS resource ID, a transmission comb, a resource mapping, and adaptive early transmission information. In one embodiment, the adaptive early transmission information may include at least one of the full state indices set in the full set configuration as a candidate state set (e.g., {0,1,4,5}).

[0087] Referring to (3) of FIG. 5, the base station may set uplink (UL) resource information to which adaptive early transmission is to be applied through MAC CE or DCI based on a subset configuration included in the UL resource configuration, and activate at least one state among N states. According to one embodiment, the activation information transmitted from the base station to the UE through MAC CE or DCI may include an SRS resource ID (e.g., SRS resource ID = 1) and a candidate state index (e.g., candidate state index = 3).

[0088] Referring to (4) of FIG. 5, the base station can deactivate adaptive early transmission by indicating uplink (UL) resource information and a stop point for adaptive early transmission via MAC CE or DCI. According to one embodiment, the deactivation information transmitted from the base station to the UE via MAC CE or DCI can include at least one of a deactivation indicator, an SRS resource ID (e.g., SRS resource ID = 1), and a deactivation slot offset (e.g., deactivation slot offset = 3).

[0089] FIG. 6 is a diagram for explaining CSI report settings for adaptive early transmission according to one embodiment of the present disclosure.

[0090] Referring to (1) of FIG. 6, the base station can set a total of M (e.g., M=64) adaptive early transmission states through RRC signaling. In the present disclosure, the total of M adaptive early transmission states may also be referred to as a full set configuration.

[0091] Referring to (1) of Fig. 6, the full set configuration can be indexed differently based on the slot offset indicating the start time of the adaptive early transmission and the symbol information (Ahead of # symbols) indicating how early the adaptive early transmission starts.

[0092] According to one embodiment, an adaptive early transmission state may be indexed (or set) based on a parameter set including at least one of an adaptive early transmission start time, a TA value for the adaptive early transmission, and configuration information for the adaptive early transmission.

[0093] In one embodiment, the base station may set N (e.g., N=4) states (i.e., a subset configuration) out of M (e.g., M=64) states to the UE as MAC CE after transmitting the full set configuration to reduce signaling overhead.

[0094] Referring to (2) of FIG. 6, the base station can transmit (or configure) an uplink (UL) report configuration including a subset configuration to the UE. According to one embodiment, the UL report configuration can be a CSI report configuration IE (information element) transmitted via RRC signaling. N (i.e., set size) of the subset configuration and the subset configuration configuration (i.e., N states) can be updated through reconfiguration of the UL report configuration.

[0095] According to one embodiment, the CSI report configuration IE may include at least one of a CSI report configuration ID, a resource for channel measurement, a report quantity, and adaptive early transmission information. According to one embodiment, the adaptive early transmission information may include at least one of the full state indices set in the full set configuration as a candidate state set (e.g., {0,1,4,5}).

[0096] Referring to (3) of FIG. 6, the base station may set uplink (UL) resource information to which adaptive early transmission is to be applied through MAC CE or DCI based on a subset configuration included in the UL report configuration, and activate at least one state among N states. According to one embodiment, the activation information transmitted from the base station to the UE through MAC CE or DCI may include a CSI report configuration ID (e.g., CSI report configuration ID = 1) and a candidate state index (e.g., candidate state index = 3).

[0097] Referring to (4) of FIG. 6, the base station can deactivate adaptive early transmission by indicating uplink (UL) resource information and a stop point for adaptive early transmission via MAC CE or DCI. According to one embodiment, the deactivation information transmitted from the base station to the UE via MAC CE or DCI can include at least one of a deactivation indicator, a CSI report configuration ID (e.g., CSI report configuration ID = 1), and a deactivation slot offset (e.g., deactivation slot offset = 3).

[0098] FIG. 7 is a diagram illustrating a method for a UE and a network to apply adaptive early transmission to an SRS resource configuration according to one embodiment of the present disclosure.

[0099] Referring to FIG. 7, in operation 701, the UE may receive an SRS resource configuration including information regarding adaptive early transmission from the network (or base station). In one embodiment, the SRS resource configuration may be transmitted via RRC signaling. The information regarding the adaptive early transmission may be updated through reconfiguration of the SRS resource configuration.

[0100] According to one embodiment, the adaptive early transmission information may include at least one of a TA value and a slot offset for adaptive early transmission.

[0101] In operation 703, the UE may transmit at least one SRS to the network (or base station) based on the SRS resource configuration.

[0102] In operation 705, the network (or base station) may transmit a message (adaptive early transmission activation) to the UE to activate adaptive early transmission. In one embodiment, the message (adaptive early transmission activation) may be transmitted from the base station to the UE via MAC CE or DCI. In one embodiment, the message (adaptive early transmission activation) may include an activation indicator, an SRS resource ID, and an activation slot offset.

[0103] In operation 707, the UE may perform at least one adaptive early SRS transmission based on the above message (adaptive early transmission activation).

[0104] In operation 709, the network (or base station) may transmit a message (adaptive early transmission deactivation) to the UE to deactivate adaptive early transmission. In one embodiment, the message (adaptive early transmission deactivation) may be transmitted from the base station to the UE via MAC CE or DCI. In one embodiment, the message (adaptive early transmission deactivation) may include a deactivation indicator, an SRS resource ID, and a deactivation slot offset.

[0105] In operation 711, the UE may transmit at least one SRS to the network (or base station) based on the SRS resource configuration.

[0106] FIG. 8 is a diagram illustrating a method for a UE and a network to apply adaptive early transmission to a CSI report configuration according to one embodiment of the present disclosure.

[0107] Referring to FIG. 8, in operation 801, a UE may receive a CSI report configuration including adaptive early transmission information from a network (or a base station). In one embodiment, the CSI report configuration may be transmitted via RRC signaling. The information regarding the adaptive early transmission may be updated through reconfiguration of the CSI report configuration.

[0108] According to one embodiment, the adaptive early transmission information may include at least one of a TA value and a slot offset for adaptive early transmission.

[0109] In operation 803, the UE may transmit at least one CSI report to the network (or base station) on the PUCCH and / or PUSCH based on the CSI report configuration.

[0110] In operation 805, the network (or base station) may transmit a message (adaptive early transmission activation) to the UE to activate adaptive early transmission. In one embodiment, the message (adaptive early transmission activation) may be transmitted from the base station to the UE via MAC CE or DCI. In one embodiment, the message (adaptive early transmission activation) may include an activation indicator, a CSI report configuration ID, and an activation slot offset.

[0111] In operation 807, the UE may perform at least one adaptive early CSI report transmission on PUCCH and / or PUSCH based on the above message (adaptive early transmission activation).

[0112] In operation 809, the network (or base station) may transmit a message (adaptive early transmission deactivation) to the UE to deactivate adaptive early transmission. In one embodiment, the message (adaptive early transmission deactivation) may be transmitted from the base station to the UE via MAC CE or DCI. In one embodiment, the message (adaptive early transmission deactivation) may include a deactivation indicator, a CSI report configuration ID, and a deactivation slot offset.

[0113] In operation 811, the UE may transmit at least one CSI report to the network (or base station) on the PUCCH and / or PUSCH based on the CSI report configuration.

[0114] FIG. 9 is a diagram showing the configuration of a UE according to an embodiment of the present disclosure.

[0115] A UE according to one embodiment of the present disclosure may include a processor (920) that controls the overall operation of the UE, a transceiver (900) including a transmitter and a receiver, and a memory (910). Of course, the present invention is not limited to the above example, and the UE may include more or fewer components than those illustrated in FIG. 9.

[0116] According to one embodiment of the present disclosure, the transceiver (900) can transmit and receive signals with a base station or a network entity. The signals transmitted and received with the base station may include control information and data. In addition, the transceiver (900) can receive signals via a wireless channel, output them to the processor (920), and transmit the signals output from the processor (920) via the wireless channel.

[0117] According to one embodiment of the present disclosure, the processor (920) can control the UE to perform any one of the operations described above. Meanwhile, the processor (920), the memory (910), and the transceiver (900) do not necessarily have to be implemented as separate modules, and of course, they can be implemented as a single component in the form of a single chip. In addition, the processor (920) and the transceiver (900) can be electrically connected. In addition, the processor (920) can be an Application Processor (AP), a Communication Processor (CP), a circuit, an application-specific circuit, or at least one processor.

[0118] According to one embodiment of the present disclosure, the memory (910) can store data such as basic programs, application programs, and setting information for the operation of the UE. In particular, the memory (910) provides the stored data upon request of the processor (920). The memory (910) can be configured as a storage medium or a combination of storage media such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD. In addition, there can be a plurality of memories (910). In addition, the processor (920) can perform the above-described embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory (910).

[0119] FIG. 10 is a diagram showing the configuration of a base station according to an embodiment of the present disclosure.

[0120] A base station (or network) according to one embodiment of the present disclosure may include a processor (1020) that controls the overall operation of the base station (or network), a transceiver (1000) including a transmitter and a receiver, and a memory (1010). Of course, the present invention is not limited to the above example, and the base station (or network) may include more or fewer components than the configuration illustrated in FIG. 10.

[0121] According to one embodiment of the present disclosure, the transceiver (1000) can transmit and receive signals with at least one terminal. The signals transmitted and received with at least one terminal may include control information and data.

[0122] According to one embodiment of the present disclosure, the processor (1020) can control the base station (or network) to perform any one of the operations described above. Meanwhile, the processor (1020), memory (1010), and transceiver (1000) do not necessarily have to be implemented as separate modules, and may of course be implemented as a single component in the form of a single chip. Furthermore, the processor (1020) and the transceiver (600) may be electrically connected. Furthermore, the processor (1020) may be at least one processor.

[0123] According to one embodiment of the present disclosure, the memory (1010) can store data such as basic programs, application programs, and setting information for the operation of the base station (or network). In particular, the memory (1010) provides the stored data upon request of the processor (1020). The memory (1010) can be configured as a storage medium or a combination of storage media such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD. In addition, there can be a plurality of memories (1010). In addition, the processor (1020) can perform the above-described embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory (1010).

[0124] FIG. 11 is a diagram for explaining the operation of a UE according to an embodiment of the present disclosure.

[0125] Referring to FIG. 11, in operation 1110, a user equipment (UE) may receive a control message including uplink resource information for adaptive early transmission from a base station. According to one embodiment, the control message may be received via a medium access control (MAC) control element (CE). According to one embodiment, the control message may include at least one of uplink resource information to which the adaptive early transmission is to be applied, a timing advance (TA) value for transmission timing of the uplink signal in the adaptive early transmission, a start time of the adaptive early transmission, and a duration of the adaptive early transmission.

[0126] In operation 1120, the UE may receive an activation message from the base station to activate the adaptive early transmission. In one embodiment, the activation message may be received via MAC CE or downlink control information (DCI).

[0127] In operation 1130, the UE may transmit an uplink signal to the base station in a guard period based on the activation message and the uplink resource information for the adaptive early transmission. According to one embodiment, the uplink signal transmitted in the guard period may include at least one of a periodic sounding reference signal (SRS), a semi-persistent SRS, a periodic channel state information (CSI) report, and a semi-persistent CSI report.

[0128] In one embodiment, the UE may receive a deactivation message from the base station for deactivating the adaptive early transmission. In one embodiment, the deactivation message may be received via MAC CE or downlink control information (DCI).

[0129] In one embodiment, the UE may receive full set configuration information including a plurality of adaptive early transmission states from the base station via radio resource control (RRC) signaling. In one embodiment, each of the plurality of adaptive early transmission states may be indexed based on a slot offset and symbol information regarding a transmission time of the uplink signal.

[0130] In one embodiment, the UE may receive, from the base station, subset configuration information including at least one adaptive early transmission state among the plurality of adaptive early transmission states via MAC CE. In one embodiment, the at least one adaptive early transmission state may be indexed based on an index of the full set configuration information, the slot offset, and the symbol information.

[0131] It should be noted that the aforementioned configuration diagrams, examples of control / data signal transmission methods, examples of operational procedures, and configuration diagrams are not intended to limit the scope of the present disclosure. That is, not all components, entities, or operational steps described in the embodiments of the present disclosure should be construed as essential components for implementing the disclosure, and implementations may be made within a scope that does not detract from the essence of the disclosure even if only some components are included. Furthermore, each embodiment may be combined and operated as needed. For example, parts of the methods proposed in the present disclosure may be combined to operate network entities and terminals.

[0132] The operations of the network, base station, or terminal described above can be realized by providing a memory device storing the corresponding program code in any component within the network entity, base station, or terminal device. That is, the control unit of the network entity, base station, or terminal device can execute the operations described above by reading and executing the program code stored in the memory device using a processor or CPU (Central Processing Unit).

[0133] The various components and modules of the network, base station, or terminal device described in this specification may be operated using hardware circuits, such as logic circuits based on complementary metal oxide semiconductors, firmware, software, and / or hardware and firmware and / or software embedded in a machine-readable medium. For example, various electrical structures and methods may be implemented using electrical circuits such as transistors, logic gates, and application-specific semiconductors.

[0134] When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. The one or more programs stored in the computer-readable storage medium are configured for execution by one or more processors within an electronic device. The one or more programs include instructions that cause the electronic device to execute methods according to the embodiments described in the claims or specification of the present disclosure.

[0135] These programs (software modules, software) may be stored in random access memory, non-volatile memory including flash memory, read only memory (ROM), electrically erasable programmable read only memory (EEPROM), magnetic disc storage device, compact disc ROM (CD-ROM), digital versatile discs (DVDs) or other forms of optical storage device, magnetic cassette. Or, they may be stored in a memory configured as a combination of some or all of these. In addition, each configuration memory may be included in multiple numbers.

[0136] Additionally, the program may be stored in an attachable storage device that is accessible via a communication network such as the Internet, an intranet, a local area network (LAN), a wide local area network (WLAN), a storage area network (SAN), or a combination thereof. Such a storage device may be connected to a device performing an embodiment of the present disclosure via an external port. Additionally, a separate storage device on the communication network may be connected to a device performing an embodiment of the present disclosure.

[0137] In the specific embodiments of the present disclosure described above, components included in the disclosure are expressed in the singular or plural form, depending on the specific embodiment presented. However, the singular or plural expressions are selected to suit the presented situation for convenience of explanation, and the present disclosure is not limited to singular or plural components. Components expressed in the plural form may be composed of singular elements, or components expressed in the singular form may be composed of plural elements.

[0138] Meanwhile, although the detailed description of the present disclosure has described specific embodiments, it is obvious that various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be determined not only by the scope of the following claims but also by equivalents of the scope of the claims. In other words, it will be apparent to those skilled in the art that other modifications based on the technical idea of ​​the present disclosure are possible. In addition, each of the above embodiments can be combined and operated with each other as needed. For example, parts of the methods proposed in the present disclosure can be combined with each other to operate a base station and a terminal. In addition, although the above embodiments have been presented based on a 5G, NR system, other modifications based on the technical idea of ​​the above embodiments can be implemented with other systems such as LTE, LTE-A, and LTE-A-Pro systems.

[0139] While the detailed description of this disclosure has described specific embodiments, it should be understood that various modifications are possible without departing from the scope of this disclosure. Therefore, the scope of this disclosure should not be limited to the described embodiments, but should be defined not only by the scope of the claims described below, but also by equivalents thereof.

Claims

1. In a method of operating a UE (user equipment) in a wireless communication system, An operation of receiving a control message including uplink resource information for adaptive early transmission from a base station; An operation of receiving an activation message from the base station for activating the adaptive early transmission; and A method characterized by comprising an operation of transmitting an uplink signal to the base station in a guard period based on the activation message and the uplink resource information for the adaptive early transmission.

2. In paragraph 1, A method further comprising the action of receiving a deactivation message from the base station for deactivating the adaptive early transmission.

3. In the first paragraph, the uplink signal transmitted in the protection section, A method characterized by including at least one of a periodic sounding reference signal (SRS), a semi-persistent SRS, a periodic channel state information (CSI) report, and a semi-persistent CSI report.

4. In paragraph 1, A method characterized in that the above control message is received via a MAC (medium access control) CE (control element).

5. In paragraph 2, The above activation message is received via MAC CE or DCI (downlink control information), A method characterized in that the above deactivation message is received via MAC CE or DCI (downlink control information).

6. In paragraph 1, the control message is, A method characterized by including at least one of uplink resource information to which the adaptive early transmission is to be applied, a TA (timing advance) value for transmission timing of the uplink signal at the time of the adaptive early transmission, a start time of the adaptive early transmission, and a duration of the adaptive early transmission.

7. In paragraph 1, Further comprising an operation of receiving full set configuration information including multiple adaptive early transmission states via RRC (radio resource control) signaling, A method characterized in that each of said plurality of adaptive early transmission states is indexed based on slot offset and symbol information regarding a transmission time of said uplink signal.

8. In paragraph 7, Further comprising an operation of receiving, via MAC CE, subset configuration information including at least one adaptive early transmission state among the plurality of adaptive early transmission states, A method characterized in that said at least one adaptive early transmission state is indexed based on an index of said full set configuration information, said slot offset, and said symbol information.

9. In a method of operating a base station in a wireless communication system, An operation of transmitting a control message including uplink resource information for adaptive early transmission to a user equipment (UE); An operation of transmitting an activation message to the UE for activating the adaptive early transmission; and A method characterized by comprising an action of receiving, from the UE, an uplink signal transmitted in a guard period based on the activation message and the uplink resource information for the adaptive early transmission.

10. In paragraph 9, Further comprising the action of transmitting a deactivation message to the UE for deactivating the adaptive early transmission; The above activation message is transmitted via MAC CE or DCI (downlink control information), A method characterized in that the above deactivation message is transmitted via MAC CE or DCI (downlink control information).

11. In paragraph 9, the uplink signal transmitted in the protection section, A method characterized by including at least one of a periodic sounding reference signal (SRS), a semi-persistent SRS, a periodic channel state information (CSI) report, and a semi-persistent CSI report.

12. In paragraph 9, the control message is, A method characterized by including at least one of uplink resource information to which the adaptive early transmission is to be applied, a TA (timing advance) value for transmission timing of the uplink signal at the time of the adaptive early transmission, a start time of the adaptive early transmission, and a duration of the adaptive early transmission.

13. In paragraph 9, An operation of transmitting full set configuration information including multiple adaptive early transmission states via RRC (radio resource control) signaling; and Further comprising an operation of transmitting, via MAC CE, subset configuration information including at least one adaptive early transmission state among the plurality of adaptive early transmission states, Each of the above plurality of adaptive early transmission states is indexed based on slot offset and symbol information regarding the transmission time of the uplink signal, A method characterized in that said at least one adaptive early transmission state is indexed based on an index of said full set configuration information, said slot offset, and said symbol information.

14. In a wireless communication system, in the UE (user equipment), Transmitter and receiver; and comprising a processor, said processor comprising: Receive a control message including uplink resource information for adaptive early transmission from a base station, Receive an activation message for activating the above adaptive early transmission from the base station, A UE characterized in that it transmits an uplink signal to the base station in a guard period based on the activation message and the uplink resource information for the adaptive early transmission.

15. In a base station in a wireless communication system, Transmitter and receiver; and comprising a processor, said processor comprising: Transmitting a control message including uplink resource information for adaptive early transmission to a UE (user equipment), Transmitting an activation message to the UE to activate the above adaptive early transmission, A base station characterized in that it receives an uplink signal transmitted in a guard period from the UE based on the activation message and the uplink resource information for the adaptive early transmission.

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