Method and apparatus for performing communication in a wireless communication system

Abstract

A method of performing wireless communication by a device and a device supporting the method are provided. The method can include the steps of acquiring information related to a common search space, and monitoring system information change information in a change time period. For example, based on the information related to the common search space being provided to the device, and based on downlink reception related to the system information change information colliding with uplink transmission in the change time period, monitoring of the downlink reception can be prioritized in the change time period.

Description

Technical Field

[0001] This disclosure relates to wireless communication systems. Background Technology

[0002] 5G NR is the successor to LTE and a new, zero-based mobile communication system with features such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, including low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0003] 6G (wireless communication) systems have objectives such as (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced energy consumption of battery-free Internet of Things (IoT) devices, (vi) ultra-reliable connectivity, and (vii) networked intelligence with machine learning capabilities. The vision for 6G systems can include four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and 6G systems can meet the requirements shown in Table 1 below. For example, Table 1 shows the requirements for 6G systems.

[0004] [Table 1] Summary of the Invention

[0005] Technical issues

[0006] This disclosure provides methods and apparatus for efficiently providing services in wireless communication systems. Specifically, this disclosure provides methods and apparatus for communication.

[0007] Technical solution

[0008] Based on embodiments of this disclosure, a method can be provided. For example, the method may include: obtaining information related to a public search space; and monitoring system information change indications during a modification period. For instance, based on providing the device with information related to the public search space, and based on downlink reception conflicting with uplink transmissions related to system information change indications during the modification period, downlink reception can be prioritized for monitoring during the modification period.

[0009] Based on embodiments of this disclosure, an apparatus can be provided. For example, the apparatus may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the apparatus to perform operations including: obtaining information related to a common search space; and monitoring system information change indications during a modification period. For example, based on providing the apparatus with information related to the common search space, and based on downlink reception conflicting with uplink transmissions related to system information change indications during a modification period, downlink reception monitoring can be prioritized during the modification period.

[0010] Based on embodiments of this disclosure, a processing apparatus suitable for a control device can be provided. For example, the processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the device to perform operations including: obtaining information related to a common search space; and monitoring system information change indications during a modification period. For example, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmissions related to system information change indications during a modification period, downlink reception monitoring can be prioritized during the modification period.

[0011] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium for storing instructions can be provided. For example, when executed, the instructions can cause the device to perform operations including: obtaining information related to a common search space; and monitoring system information change indications during a modification period. For example, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmissions during a modification period related to system information change indications, downlink reception monitoring can be prioritized during the modification period.

[0012] Based on embodiments of this disclosure, a method can be provided. For example, the method may include: sending information related to a public search space; and sending a system information change indication during a modification period. For instance, based on providing the device with information related to the public search space, and based on the conflict between downlink reception and uplink transmission related to the system information change indication during the modification period, downlink reception can be prioritized during the modification period.

[0013] Based on embodiments of this disclosure, a base station can be provided. For example, the base station may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the base station to perform operations including: transmitting information related to a common search space; and transmitting a system information change indication during a modification period. For example, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmission during the modification period related to the system information change indication, downlink reception can be prioritized during the modification period.

[0014] Based on embodiments of this disclosure, a processing apparatus suitable for controlling a base station can be provided. For example, the processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the base station to perform operations including: transmitting information related to a common search space; and transmitting a system information change indication during a modification period. For example, based on providing the apparatus with information related to the common search space, and based on downlink reception conflicting with uplink transmission during the modification period related to the system information change indication, downlink reception monitoring can be prioritized during the modification period.

[0015] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium for storing instructions can be provided. For example, when executed, the instructions can cause a base station to perform operations including: transmitting information related to a common search space; and transmitting a system information change indication during a modification period. For example, based on providing the device with information related to the common search space, and based on the conflict between downlink reception and uplink transmission related to the system information change indication during the modification period, downlink reception can be prioritized during the modification period.

[0016] Beneficial effects

[0017] This disclosure provides methods and apparatus for efficiently providing services in wireless communication systems. For example, communication can be performed efficiently through the embodiments proposed in this disclosure. Attached Figure Description

[0018] Figure 1 The communication process between devices based on embodiments of the present disclosure is illustrated.

[0019] Figure 2 A radio protocol architecture based on an embodiment of this disclosure is shown.

[0020] Figure 3 The structure of a radio frame based on an embodiment of this disclosure is shown.

[0021] Figure 4 The time slot structure of a frame based on an embodiment of this disclosure is shown.

[0022] Figure 5 An example of a BWP based on an embodiment of this disclosure is shown.

[0023] Figure 6 This illustrates a communication structure that can be provided in a 6G system based on an embodiment of this disclosure.

[0024] Figure 7 An example of a communication scenario based on a 6G system, based on an embodiment of the present disclosure, is shown.

[0025] Figure 8 The process of downlink transmission and reception based on an embodiment of this disclosure is illustrated.

[0026] Figure 9 The process of uplink transmission and reception based on an embodiment of this disclosure is illustrated.

[0027] Figure 10 An example of an NTN according to an embodiment of this disclosure is shown.

[0028] Figure 11 Examples of K_offset and K_mac based on embodiments of this disclosure are shown.

[0029] Figure 12 Examples of UE-specific TAs and public TAs based on embodiments of this disclosure are shown.

[0030] Figure 13 An example of an uplink-downlink timing relationship based on an embodiment of this disclosure is shown.

[0031] Figure 14 An example of beam / cell TA mismatch based on an embodiment of this disclosure is shown.

[0032] Figure 15 An HD conflict in an NTN based on an embodiment of this disclosure is shown.

[0033] Figure 16 Examples of priority rules related to implementations based on this disclosure are shown.

[0034] Figure 17 A method for performing wireless communication by a device based on an embodiment of the present disclosure is shown.

[0035] Figure 18 A method for performing wireless communication by a base station based on an embodiment of the present disclosure is shown.

[0036] Figure 19 A communication system 1 based on an embodiment of the present disclosure is shown.

[0037] Figure 20 A wireless device based on an embodiment of the present disclosure is shown.

[0038] Figure 21 A signal processing circuit for transmitting signals based on an embodiment of the present disclosure is shown.

[0039] Figure 22 A wireless device based on an embodiment of the present disclosure is shown.

[0040] Figure 23 A handheld device based on an embodiment of the present disclosure is shown.

[0041] Figure 24 The vehicle or autonomous vehicle shown is based on an embodiment of this disclosure. Detailed Implementation

[0042] In this disclosure, "A or B" may mean "A only", "B only", or "both A and B". In other words, in this disclosure, "A or B" can be interpreted as "A and / or B". For example, in this disclosure, "A, B or C" may mean "A only", "B only", "C only", or "any combination of A, B and C".

[0043] The forward slash ( / ) or comma used in this disclosure can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B, or C".

[0044] In this disclosure, "at least one of A and B" may mean "only A", "only B" or "both A and B". Furthermore, in this disclosure, the expression "at least one of A or B" or "at least one of A and / or B" may be interpreted as "at least one of A and B".

[0045] Additionally, in this disclosure, "at least one of A, B, and C" may mean "A only", "B only", "C only" or "any combination of A, B, and C". Furthermore, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C".

[0046] Additionally, the brackets used in this disclosure may mean "for example". Specifically, when indicated as "Control Message (PDCCH)", this may mean that "PDCCH" is cited as an example of "Control Message". In other words, "Control Message" in this disclosure is not limited to "PDCCH", and "PDCCH" may be cited as an example of "Control Message". Furthermore, when indicated as "Control Message (i.e., PDCCH)", this may also mean that "PDCCH" is cited as an example of "Control Message".

[0047] In the following description, "when, if, or in the case of" can be replaced with "based on".

[0048] The technical features described in one of the accompanying drawings of this disclosure may be implemented individually or simultaneously.

[0049] In this disclosure, higher-layer parameters can be parameters configured, pre-configured, or predefined for the UE. For example, a base station or network can send higher-layer parameters to the UE. For example, higher-layer parameters can be sent via Radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling.

[0050] In this disclosure, the term "configured or defined" can be interpreted as pre-configuring or configuring a device via predefined signaling (e.g., SIB, MAC, RRC, downlink control information (DCI), etc.) from a base station or network. In this disclosure, the term "configured or defined" can also be interpreted as pre-configuring or configuring a device via predefined signaling (e.g., MAC, RRC, sidelink control information (SCI), control information signaled between devices, etc.) from another device. In this disclosure, the term "configured or defined" can be interpreted as pre-configuring a device.

[0051] In this disclosure, User Equipment (UE) may refer to a device, a portable device, a wireless device, etc. In this disclosure, Base Station (BS) may refer to a Radio Access Network (RAN) node, a Non-Terrestrial Network (NTN) cell / node, a Transmit / Receive Point (TRP), a network, an Integrated Access and Backhaul (IAB) node, a device, a portable device, a wireless device, etc.

[0052] The techniques proposed in this disclosure can be used in various wireless communication systems such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier Frequency Division Multiple Access (SC-FDMA). CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rate GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA), Long Term Evolution (LTE), and 5G NR.

[0053] The technologies proposed in this disclosure can be implemented as 6G wireless technologies and can be applied to various 6G systems. For example, 6G systems can have key features such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0054] Figure 1 The communication process between devices based on embodiments of the present disclosure is illustrated. Figure 1 The implementation methods can be combined with various implementation methods of this disclosure.

[0055] Reference Figure 1 In step S101, the first device and the second device can perform synchronization. For example, the first device can be at least one of the UE and / or the devices proposed in this disclosure. For example, the second device can be at least one of the base station, network, RAN node, NTN node / cell, TRP, UE and / or the devices proposed in this disclosure. For example, the first device can perform an initial cell search operation. For example, the first device can detect at least one synchronization signal transmitted based on rules predefined by the second device. Here, for example, the synchronization signal can include multiple synchronization signals based on structure or purpose classification (e.g., primary synchronization signal, secondary synchronization signal, etc.). In this way, the first device can check the boundaries of the frames, subframes, time units, time slots and / or symbols of the second device, and the first device can obtain information for the second device (e.g., cell identifier).

[0056] In step S103, the first device may obtain system information sent by the second device. For example, the system information may include information related to the attributes, characteristics, and / or capabilities of the second device required to access the second device and use the service. For example, the system information may be categorized based on content (e.g., whether it is inherently necessary for access), transmission structure (e.g., the channel used, whether it is based on on-demand provision), etc. For example, the system information may be categorized into Main Information Blocks (MIBs) and System Information Blocks (SIBs). For example, the first device may send a signal requesting system information before receiving it, as needed. For example, the request and provision of system information may be performed after the random access procedure described later.

[0057] In step S105, the first device and the second device can perform a random access procedure. For example, the first device can send and / or receive at least one message (e.g., random access preamble, random access response message, etc.) for the random access procedure based on information related to the random access channel of the second device obtained through system information (e.g., channel location, channel structure, supported preamble structure, etc.). For example, the first device can send a preamble (e.g., Msg1) through the random access channel, and the first device can receive a random access response message (e.g., Msg2), and the first device can send a message (e.g., Msg3) including information related to the first device (e.g., identification information) to the second device using scheduling information included in the random access response message, and the first device can receive a message (e.g., Msg4) for contention resolution and / or connection establishment. For example, Msg1 and Msg3 can be sent and received as a single message (e.g., MsgA), and / or Msg2 and Msg4 can be sent and received as a single message (e.g., MsgB).

[0058] In step S107, the first and second devices can execute signaling for control information. Here, for example, the control information can be defined in various layers, such as layers controlling connections (e.g., Radio Resource Control (RRC) layer), layers handling the mapping between logical channels and transport channels (e.g., Medium Access Control (MAC) layer), layers handling physical channels (e.g., Physical (PHY) layer), etc. For example, the first and second devices can execute at least one of signaling for establishing a connection, signaling for determining communication-related configurations, and / or signaling for indicating allocated resources. For example, the control information can be signaled / sent via a control channel. For example, the control information and / or the control channel can be used to schedule data, data channels (e.g., shared channels), and / or control information on data channels.

[0059] In step S109, the first and second devices can transmit and / or receive data. For example, the first and second devices can process data based on signaling of control information and transmit and / or receive data. For example, when transmitting data, the first or second device can perform at least one of channel coding, rate matching, scrambling, constellation mapping, layer mapping, waveform modulation, antenna mapping, and / or resource mapping on the information bits. For example, when receiving data, the first or second device can perform at least one of signal extraction from resources, waveform demodulation per antenna, signal arrangement considering layer mapping, constellation demapping, descrambling, and / or channel decoding.

[0060] For example, the layers of the radio interface protocol between the first device and the second device can be classified as Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3), etc. For instance, the physical layer, belonging to Layer 1, can provide information transmission services using physical channels, and the Radio Resource Control (RRC) layer, located in Layer 3, can perform the function of controlling radio resources between the first and second devices. For this purpose, for example, the RRC layer can exchange RRC messages between the first and second devices.

[0061] Figure 2 A radio protocol architecture based on an embodiment of this disclosure is shown. Figure 2 The implementation methods can be combined with various implementation methods of this disclosure. For example, Figure 2 (a) may show the radio protocol stack for the user plane used for uplink or downlink communication, and Figure 2 (b) may show the radio protocol stack for the control plane used for uplink or downlink communication. For example, Figure 2 (c) can illustrate the radio protocol stack for the user plane used for inter-device communication, and Figure 2 (d) can show the radio protocol stack of the control plane used for inter-device communication.

[0062] For example, the physical layer can use physical channels to provide information transmission services to higher layers. For example, the physical layer can connect to the Media Access Control (MAC) layer, which is a higher layer, via a transport channel. For example, data can be transmitted between the MAC layer and the physical layer via a transport channel. For example, transport channels can be classified based on how and what characteristics are used to transmit data through the radio interface. For example, data can be transmitted between different physical layers (i.e., between the physical layers of a first device and a second device) via a physical channel. For example, the physical channel can be modulated using an orthogonal frequency division multiplexing (OFDM) scheme, and time and frequency can be used as radio resources.

[0063] For example, the MAC layer can provide services to the higher-level Radio Link Control (RLC) layer via logical channels. For example, the MAC layer can provide mapping functionality from multiple logical channels to multiple transport channels. For example, the MAC layer can provide logical channel multiplexing functionality by mapping multiple logical channels to a single transport channel. For example, the MAC sublayer can provide data transmission services over logical channels.

[0064] For example, the RLC layer can perform concatenation, segmentation, and reassembly of RLC Service Data Units (SDUs). For example, to guarantee the various Quality of Service (QoS) requirements of the Radio Bearer (RB), the RLC layer can provide three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). For example, AM RLC can provide error correction through Automatic Repeat Request (ARQ).

[0065] For example, the Radio Resource Control (RRC) layer can be defined only in the control plane. The RRC layer can be used to control logical, transport, and physical channels related to the configuration, reconfiguration, and release of radio bearers. For example, RB can refer to a logical path provided by first (e.g., the physical layer) and second layers (e.g., the MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP) layer, Serving Data Adaptation Protocol (SDAP) layer, etc.) for data delivery between a first device and a second device.

[0066] For example, the PDCP layer in the user plane may include the delivery of user data, header compression, and encryption. Similarly, the PDCP layer in the control plane may include the delivery of control plane data and encryption / integrity protection.

[0067] For example, RB configuration can refer to the process of specifying radio protocol layers and channel attributes to provide a specific service and configuring each specific parameter and operating method. For instance, RBs can be divided into two types: Signaling Radio Bearers (SRBs) and Data Radio Bearers (DRBs). For example, an SRB can be used as a path for transmitting RRC messages in the control plane, and a DRB can be used as a path for transmitting user data in the user plane.

[0068] For example, when an RRC connection is established between the UE's RRC layer and the base station's RRC layer, the UE can be in the RRC_CONNECTED state; otherwise, it can be in the RRC_IDLE state. For example, in NR, the RRC_INACTIVE state is also defined, and a UE in the RRC_INACTIVE state can release its connection with the base station while maintaining its connection with the core network.

[0069] For example, the downlink transport channel may include at least one of a broadcast channel (BCH) for transmitting system information and / or a downlink shared channel (SCH) for transmitting user traffic or other control messages. For example, in the case of traffic or control messages in downlink multicast or broadcast services, they may be transmitted via the downlink SCH, or they may be transmitted via a separate downlink multicast channel (MCH). Meanwhile, the uplink transport channel may include at least one of a random access channel (RACH) for transmitting initial control messages and / or an uplink shared channel (SCH) for transmitting user traffic or other control messages. For example, the logical channel located above the transport channel and mapped to the transport channel may include at least one of a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), and / or a multicast traffic channel (MTCH).

[0070] Figure 3 The structure of a radio frame based on an embodiment of this disclosure is shown. Figure 3 The implementation methods can be combined with various implementation methods of this disclosure.

[0071] Reference Figure 3 For example, radio frames can be used for uplink transmission, downlink reception, and / or inter-device transmission. For example, a radio frame can be 10 ms long and can be defined as two 5 ms half-frames (HF). For example, a half-frame can include five 1 ms subframes (SF). For example, a subframe can be divided into one or more time slots, and the number of time slots within a subframe can be determined based on the subcarrier spacing (SCS). For example, based on the cyclic prefix (CP), each time slot can include 12 or 14 OFDM (A) symbols.

[0072] For example, in the case of using normal CP, each time slot may include 14 symbols. For example, in the case of using extended CP, each time slot may include 12 symbols. Here, for example, the symbols may include OFDM symbols (or CP-OFDM symbols) and / or single-carrier-FDMA (SC-FDMA) symbols (or discrete Fourier transform spread spectrum-OFDM (DFT-s-OFDM) symbols).

[0073] Table 2 below shows the number of symbols per slot based on SCS configuration (u) when using normal CP or extended CP. Number of time slots per frame ( ) and the number of time slots per subframe ( Examples of ).

[0074] [Table 2]

[0075] For example, OFDM(A) parameter sets (e.g., SCS, CP length, etc.) can be configured differently across multiple cells aggregated to a single UE. Correspondingly, the (absolute time) duration of time resources (e.g., subframes, time slots, or transmission time intervals (TTIs)) configured with the same number of symbols can be configured differently across the aggregated cells. For example, in this disclosure, time resources such as subframes, time slots, TTIs, etc., can be referred to as time units.

[0076] For example, multiple parameter sets or SCSs can be supported to support various services. For instance, with an SCS of 15kHz, wide-area coverage in conventional cellular bands can be supported, while with an SCS of 30kHz / 60kHz, dense urban areas, lower latency, and wider carrier bandwidth can be supported. For instance, with an SCS of 60kHz or higher, bandwidths greater than 24.25GHz can be supported to overcome phase noise.

[0077] Figure 4 The time slot structure of a frame based on an embodiment of this disclosure is shown. Figure 4 The implementation methods can be combined with various implementation methods of this disclosure.

[0078] Reference Figure 4 For example, a time slot can include multiple symbols in the time domain. For example, a carrier can include multiple subcarriers in the frequency domain. For example, a resource block (RB) can be defined as multiple consecutive subcarriers in the frequency domain. For example, a bandwidth portion (BWP) can be defined as multiple consecutive (physical) resource blocks ((P)RBs) in the frequency domain and can correspond to a set of parameters (e.g., SCS, CP length, etc.). For example, a carrier can include up to N BWPs (where N is a positive integer). For example, data communication can be performed through active BWPs. For example, each element in a resource grid can be called a resource element (RE), and a complex symbol can be mapped to each element.

[0079] For example, a BWP can be a set of consecutive PRBs in a given parameter set. For example, a PRB can be selected from a subset of consecutive common resource blocks (CRBs) in a given parameter set on a given carrier.

[0080] For example, a BWP can be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, a UE may not monitor downlink radio link quality in a DL BWP other than the active DL BWP on the primary cell (PCell). For example, a UE may not receive the Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), or Channel State Information Reference Signal (CSI-RS) (except for Radio Resource Management (RRM)) other than the active DL BWP. For example, a UE may not trigger Channel State Information (CSI) reporting for an inactive DL BWP. For example, a UE may not transmit the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) other than the active UL BWP. For example, in the downlink case, the initial BWP can be given as a set of contiguous resource blocks (RBs) for the Residual Minimal System Information (RMSI) Control Resource Set (CORESET) (configured by the Physical Broadcast Channel (PBCH)). For example, in the uplink case, the initial BWP can be given by a System Information Block (SIB) for the random access procedure. For example, the default BWP can be configured by higher layers. For example, the initial value of the default BWP can be the initial DL BWP. To save energy, if the UE does not detect downlink control information (DCI) for a certain period of time, the UE can switch its active BWP to the default BWP.

[0081] Figure 5 An example of a BWP based on an embodiment of this disclosure is shown. Figure 5 The implementation methods can be combined with various implementation methods of this disclosure. Figure 5 In this implementation, it is assumed that there are three BWPs.

[0082] Reference Figure 5 For example, a common resource block (CRB) can be a carrier resource block numbered from one end of a carrier frequency band to the other, and a PRB can be a resource block numbered within each BWP. For example, point A can indicate a common reference point of the resource block grid.

[0083] For example, a BWP can be configured by point A, an offset NstartBWP from point A, and a bandwidth NsizeBWP. For example, point A can be an external reference point of the PRB of a carrier, where all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) are 0-aligned with subcarriers. For example, the offset can be the PRB spacing between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0084] Figure 6 This illustrates a communication structure that can be provided in a 6G system based on an embodiment of this disclosure. Figure 6 The implementation methods can be combined with various implementation methods of this disclosure.

[0085] As core implementation technologies for 6G systems, technologies such as artificial intelligence (AI), terahertz (THz) communication, optical wireless technology, free-space light (FSO) backhaul networks, massive MIMO technology, blockchain, 3D networking, quantum communication, unmanned aerial vehicles, non-cellular communication, wireless information and power transfer (WIET), integrated sensing and communication, integrated access and backhaul networks, holographic beamforming, big data analytics, and large-scale intelligent surfaces (LIS) can be adopted.

[0086] - Artificial Intelligence (AI): When AI is introduced into communication, real-time data transmission can be simplified and improved. AI can use numerous analyses to determine methods for performing complex target tasks. For example, AI can increase efficiency and reduce processing latency. Time-consuming operations such as handover, network selection, and resource scheduling can be performed instantly by AI. AI can also play an important role in M2M, machine-to-human, and human-to-machine interactions. Additionally, AI can enable instant communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, smart structures, smart networks, smart devices, intelligent cognitive radios, self-maintaining wireless networks, and machine learning.

[0087] - Terahertz (THz) Communication: Data rates can be increased by increasing bandwidth. This can be achieved by using sub-THz communication with wide bandwidth and applying advanced massive MIMO technology. THz waves are referred to as submillimeter radiation, typically indicating a frequency band between 0.1THz and 10THz with corresponding wavelengths ranging from 0.03mm to 3mm. The 100GHz to 300GHz band (sub-THz band) is considered the main part of the THz band used for cellular communication. 6G cellular communication capacity increases when the sub-THz band is added to the millimeter-wave band. The defined THz band of 300GHz to 3THz is in the far-infrared (IR) band. The 300GHz to 3THz band is part of the optical band, but it lies at the boundary of the optical band and immediately follows the RF band. Therefore, the 300GHz to 3THz band is similar to RF. The main characteristics of THz communication include (i) a wide bandwidth that can be used to support very high data rates and (ii) high path loss at high frequencies (highly directional antennas are essential). The narrow beamwidth generated in highly directional antennas reduces interference. The short wavelength of THz signals allows for the integration of a greater number of antenna elements with devices and base stations operating in this band. Therefore, advanced adaptive placement techniques capable of overcoming range limitations can be used.

[0088] - Massive MIMO technology (MMIMO)

[0089] - Holographic Beamforming (HBF)

[0090] - Optical wireless technology

[0091] - Free Space Light (FSO) Backhaul Network

[0092] - Quantum communication

[0093] - Cellular communication

[0094] - Integration of wireless information and power transmission

[0095] - Integration of wireless communication and sensing

[0096] - Integrated access and backhaul networks

[0097] Big Data Analytics

[0098] - Reconfigurable smart surfaces

[0099] - Metaverse

[0100] - Blockchain

[0101] - Advanced Air Mobility (AAM): AAM can be a broad concept encompassing Urban Air Mobility (UAM), Regional Air Mobility (RAM), and Unmanned Aircraft Systems (UAS). For example, AAM can include UAM, RAM, UAS, and Unmanned Aircraft (UAV).

[0102] - Autonomous driving (self-driving): Vehicle-to-everything (V2X), a core element in establishing autonomous driving infrastructure, can be a technology that enables vehicles to communicate and share information with various elements on the road for autonomous driving, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I).

[0103] - Non-terrestrial Network (NTN): NTN can refer to a network or network segment that uses radio frequency (RF) resources installed on a satellite (or UAS platform). NTN services can be considered to ensure wider coverage or to provide wireless communication services to areas where installing wireless communication base stations is difficult.

[0104] - Integrated Sensing and Communication (ISAC): Wireless sensing is a technology enabler that acquires information about the characteristics of the environment and / or objects within the environment. It uses radio frequency to determine the distance (range), angle, or instantaneous linear velocity of objects.

[0105] - Reconfigurable Smart Surfaces (RIS): RIS can be used to manipulate and enhance signal propagation in wireless communication environments. For example, an RIS can consist of a metasurface or many small antennas arranged on a surface, and each small antenna can actively adjust the phase, amplitude, polarization, etc., of the reflected signal. For example, an RIS can improve signal reception by adjusting the path, phase, and / or intensity of the propagating signal. For example, in the case of an RIS, power consumption can be very low because power is consumed only for adjusting the phase and amplitude of the small antennas. For example, because an RIS can be reconfigured according to various environments, it can meet various communication requirements and can operate effectively in dynamic network environments.

[0106] Figure 7 An example of a communication scenario based on a 6G system, based on an embodiment of the present disclosure, is shown. Figure 7 The implementation methods can be combined with various implementation methods of this disclosure.

[0107] Reference Figure 7 NTN communication can be performed based on satellite networks, High Altitude Platform Stations (HAPS) (HIBS) serving as International Mobile Telecommunications (IMT) base stations (BS), and UEs capable of over-the-air communication (e.g., AAM). For example, for purposes such as coverage enhancement, devices such as satellite networks, HIBS, and UEs capable of over-the-air communication (e.g., AAM) can act as relays. For example, an AAM can communicate with base stations, satellite networks, etc., and / or an AAM can communicate directly with a UE, another AAM, etc.

[0108] Figure 8 The process of downlink transmission and reception according to an embodiment of the present disclosure is illustrated. Figure 8 The implementation methods can be combined with various implementation methods of this disclosure.

[0109] Reference Figure 8 For example, in step S801, the base station can schedule downlink transmissions, such as frequency / time resources, transmission layer, downlink precoder, MCS, etc. For example, the base station can determine the beam for PDSCH transmission to the UE through the above operations.

[0110] For example, in step S802, the UE can receive downlink control information (DCI) for downlink scheduling (e.g., scheduling information including PDSCH) from the base station on the PDCCH.

[0111] For example, DCI format 1_0 or 1_1 can be used for downlink scheduling, and specifically, DCI format 1_1 can include the following information: DCI format identifier, bandwidth portion indicator, frequency domain resource allocation, time domain resource allocation, PRB bundle size indicator, rate matching indicator, ZP CSI-RS trigger, antenna port, transmit configuration indicator (TCI), SRS request, and demodulation reference signal (DMRS) sequence initialization.

[0112] For example, the number of DMRS ports can be scheduled based on each state indicated in the antenna port field, and single-user (SU) / multi-user (MU) transmission scheduling can also be performed.

[0113] For example, the TCI field consists of 3 bits, and the QCL for DMRS can be dynamically indicated by indicating up to 8 TCI states based on the TCI field value.

[0114] For example, in step S803, the UE can receive downlink data from the base station on the PDSCH.

[0115] For example, if the UE detects a PDSCH containing DCI format 1_0 or 1_1, the UE can decode the PDSCH according to the corresponding DCI indication.

[0116] For example, when a UE receives a PDSCH scheduled by DCI format 1, the UE can configure a DMRS configuration type through the higher-layer parameter "dmrs-Type", and this DMRS type can be used to receive the PDSCH. For example, the UE can configure the maximum number of preceding DMRS symbols for the PDSCH through the higher-layer parameter "maxLength".

[0117] For example, in the case of DMRS configuration type 1, if the UE is scheduled with a single codeword and is assigned an antenna port mapped to index {2, 9, 10, 11 or 30}, or if the UE is scheduled with two codewords, the UE can assume that all remaining orthogonal antenna ports are unrelated to PDSCH transmission to another UE.

[0118] For example, in the case of DMRS configuration type 2, if the UE is scheduled with a single codeword and is assigned an antenna port mapped to index {2, 10 or 23}, or if the UE is scheduled with two codewords, the UE can assume that all remaining orthogonal antenna ports are unrelated to PDSCH transmission to another UE.

[0119] For example, when a UE receives a PDSCH, the precoding granularity P' can be assumed to be a contiguous resource block in the frequency domain. For example, P' can correspond to a value in {2, 4, wideband}.

[0120] For example, if P' is determined to be wideband, the UE may not expect to be scheduled with discontinuous PRBs, and the UE may assume that the same precoding is applied to the allocated resources.

[0121] For example, if P' is determined to be any one of {2, 4}, then a precoded resource block group (PRG) can be divided into P' consecutive PRBs. For example, the actual number of consecutive PRBs within each PRG can be one or more. For example, the UE can assume that the same precoding is applied to consecutive downlink PRBs within the PRG.

[0122] For example, to enable the UE to determine the modulation order, target code rate, and transport block size within the PDSCH, the UE can first read the 5-bit MCS field in the DCI and determine the modulation order and target code rate. Additionally, the UE can read the redundancy version field in the DCI and determine the redundancy version. Furthermore, the UE can determine the transport block size by using the number of layers prior to rate matching and the total number of allocated PRBs.

[0123] Figure 9 The process of uplink transmission and reception based on an embodiment of this disclosure is illustrated. Figure 9 The implementation methods can be combined with various implementation methods of this disclosure.

[0124] Reference Figure 9 For example, in step S901, the base station can schedule uplink transmissions, such as frequency / time resources, transmission layer, uplink precoder, MCS, etc. For example, the base station can determine the beam for PUSCH transmission for the UE through the above operations.

[0125] For example, in step S902, the UE can receive DCI for uplink scheduling (e.g., scheduling information for PUSCH) from the base station on the PDCCH.

[0126] For example, DCI format 0_0 or 0_1 can be used for uplink scheduling, and specifically, DCI format 0_1 ​​can include the following information: DCI format identifier, UL / SUL (Supplementary Uplink) indicator, bandwidth portion indicator, frequency domain resource allocation, time domain resource allocation, frequency hopping flag, modulation and coding scheme (MCS), SRS resource indicator (SRI), precoding information and layer number, antenna port, SRS request, DMRS sequence initialization, and UL-SCH indicator.

[0127] For example, SRS resources configured within an SRS resource set associated with the high-level parameter "usage" can be indicated by the SRS resource indicator field. For instance, "spatialRelationInfo" can be configured for each SRS resource, and its value can be one of {CRI, SSB, SRI}.

[0128] For example, in step S903, the UE can send uplink data to the base station on the PUSCH.

[0129] For example, when the UE detects a PDCCH containing DCI format 0_0 or 0_1, the UE can send the corresponding PUSCH according to the indication of the corresponding DCI.

[0130] For example, two transmission schemes can be supported (e.g., codebook-based transmission for PUSCH transmission and non-codebook-based transmission for PUSCH transmission): i) For example, when the higher-layer parameter "txConfig" is set to "codebook", the UE can be configured for codebook-based transmission. For example, when the higher-layer parameter "txConfig" is set to "nonCodebook", the UE can be configured for non-codebook-based transmission. For example, when the higher-layer parameter "txConfig" is not configured, the UE may not expect to be scheduled by DCI format 0_1. For example, when PUSCH is scheduled by DCI format 0_0, PUSCH transmission can be based on a single antenna port.

[0131] For example, in the case of codebook-based transmission, the PUSCH can be scheduled by DCI format 0_0, DCI format 0_1, or semi-static scheduling. For example, when the PUSCH is scheduled by DCI format 0_1, the UE can determine the PUSCH transmission precoder based on the SRI, TPMI (Transmit Precoding Matrix Indicator), and transmission rank from the DCI, as given by the SRS Resource Indicator field and the precoding information and layer digital field. For example, the TPMI can be used to indicate the precoder to be applied across antenna ports, and when multiple SRS resources are configured, the TPMI can correspond to the SRS resource selected by the SRI. For example, when a single SRS resource is configured, the TPMI can be used to indicate the precoder to be applied across antenna ports and can correspond to that single SRS resource. For example, the transmission precoder can be selected from an uplink codebook with the same number of antenna ports as the higher-layer parameter "nrofSRS-Ports". For example, when the UE is configured with the higher-layer parameter "txConfig" set to "codebook", at least one SRS resource can be configured. For example, the SRI indicated in slot n is associated with the most recent transmission of the SRS resource identified by the SRI, where the SRS resource may be transmitted before the PDCCH carrying the SRI (e.g., in slot n).

[0132] ii) For example, in the case of non-codebook-based transmission, the PUSCH can be scheduled by DCI format 0_0, DCI format 0_1, or semi-static scheduling. For example, when multiple SRS resources are configured, the UE can determine the PUSCH precoder and transmission rank based on the wideband SRI, where the SRI can be given by the SRS resource indicator in the DCI or by the higher-layer parameter "srs-ResourceIndicator". For example, the UE can use one or more SRS resources for SRS transmission, where the number of SRS resources for simultaneous transmission within the same RB is configured based on the UE's capabilities. For example, only one SRS port can be configured for each SRS resource. For example, only one SRS resource can be configured with the higher-layer parameter "usage" set to "nonCodebook". For example, the maximum number of SRS resources that can be configured for non-codebook-based uplink transmission can be 4. For example, the SRI indicated in slot n is associated with the most recent transmission of the SRS resource identified by the SRI, where the SRS transmission can occur before the PDCCH carrying the SRI (e.g., in slot n).

[0133] Figure 10 An example of an NTN based on an embodiment of this disclosure is shown. Figure 10 The implementation methods can be combined with various implementation methods of this disclosure.

[0134] Reference Figure 10Examples can be shown based on the NTN platform type. For example, examples based on the NTN platform type could be High Altitude Platform Station (HAPS), Low Earth Orbit (LEO), Medium Earth Orbit (MEO), or Geostationary Orbit (GEO).

[0135] For example, parameters related to a High Altitude Platform Station (HAPS) can be as follows. For example, the altitude of the HAPS can be 20 km. For example, the beam coverage area of ​​the HAPS can be 5-200 km.

[0136] For example, parameters related to Low Earth Orbit (LEO) can be as follows: For example, the altitude of LEO can be 300-1500 km. For example, the beam coverage area of ​​LEO can be 100-1000 km. For example, the satellite velocity of LEO can be 7.56 km / s (for LEO-600). For example, the maximum propagation delay of LEO can be 25.77 ms (for LEO-600).

[0137] For example, parameters related to Medium Earth Orbit (MEO) can be as follows. For example, the altitude of MEO can be 7000-25000 km. For example, the beam coverage area of ​​MEO can be 100-1500 km. For example, the maximum propagation delay of MEO can be 95.19 ms (for MEO-10000).

[0138] For example, the parameters associated with geostationary orbit (GEO) can be as follows: For example, the altitude of geostationary orbit (GEO) can be 35,786 km. For example, the beam coverage area of ​​geostationary orbit (GEO) can be 200-3,500 km. For example, the satellite velocity of geostationary orbit (GEO) can be 3.1 km / s (negligible). For example, the maximum propagation delay of geostationary orbit (GEO) can be 541.46 ms.

[0139] For example, in order to efficiently operate an NTN with a very long RTT, K_offset and K_mac can be introduced as scheduling offsets.

[0140] Figure 11 Examples of K_offset and K_mac based on embodiments of this disclosure are shown. Figure 11 The implementation methods can be combined with various implementation methods of this disclosure.

[0141] Reference Figure 11For example, examples of K_offset and K_mac can be shown. For example, the serving link RTT can be the RTT between the UE and the satellite. For example, the feeder link RTT can be the RTT between the satellite and the base station. For example, the common TA can be the TA between the satellite and the RP. For example, K_offset can be the offset of the RTT relative to the uplink time synchronization reference point (RP). For example, K_offset can refer to the sum of the serving link RTT and the common TA (if indicated). For example, K_mac can be the offset of the RTT relative to the RP and the gNB. For example, the feeder link RTT can refer to the sum of the common TA (if indicated) and K_mac.

[0142] Figure 12 Examples of UE-specific TAs and public TAs based on embodiments of this disclosure are shown. Figure 12 The implementation methods can be combined with various implementation methods of this disclosure.

[0143] Reference Figure 12 For example, in Rel-17 NTN, based on the UE's GNSS capabilities and information indicated by the base station (e.g., ephemeris information), the UE itself can calculate the TA, and this can be referred to as the UE-specific TA. For instance, the TA calculated based on common TA parameters indicated by the base station can be referred to as the common TA, and the final TA based on this can be based on... Figure 13 and with Figure 13 Related descriptions.

[0144] Figure 13 An example of an uplink-downlink timing relationship based on an embodiment of this disclosure is shown. Figure 13 The implementation methods can be combined with various implementation methods of this disclosure, and some descriptions, functions, processes, proposals and methods.

[0145] Reference Figure 13 The uplink frame number i used to send from the UE can be before the start of the corresponding downlink frame at the UE. In the beginning, among them

[0146] - and This can be given by Clause 4.2 of TS 38.213, except for msgA sent on PUSCH (where msgA should be used). = 0); - From high-level parameters TACommon , TACommonDrift and TACommonDriftVariation Derivation (if configured), otherwise ; - It can be calculated by the UE based on higher-level parameters related to the UE's location and serving satellite ephemeris (if configured); otherwise... .

[0147] For example, a TA mismatch can be made public.

[0148] For example, in NR NTN, TA mismatch may occur if the gNB does not receive any TA reports, or if existing TA reports are outdated, or if the TA report granularity is not fine enough. For instance, if the UE does not perform TA reporting at all, the gNB cannot set some key scheduling variables (e.g., K_(cell,offset), K_(UE,offset)), so this scenario (e.g., no TA report) may not be considered feasible. Therefore, assuming the UE performs TA reporting, it may be necessary to investigate the amount of TA mismatch due to TA report aging and / or TA report granularity. For example, when the UE performs TA reporting in NR NTN, TA mismatch may occur primarily due to outdated TA reports and / or coarse TA report granularity. For example, for HD-FDD(e) RedCap UE support, it may be necessary to address the quantitative level of TA mismatch between the gNB and the UE.

[0149] Meanwhile, the differences caused by outdated TA reports may occur when the UE location changes, and may occur proportionally to the RTT difference based on the UE location within the cell (e.g., the difference between the minimum TA and the maximum TA).

[0150] Figure 14 An example of beam / cell TA mismatch based on an embodiment of this disclosure is shown. Figure 14 The implementation methods can be combined with various implementation methods of this disclosure.

[0151] Reference Figure 14 For example, assuming an LEO of 600km, a beam size of 50km, and a target elevation angle of 30 degrees, the difference between the shortest RTT (minimum TA) and the longest RTT (maximum TA) can be within about 300μs, which can correspond to about 4 to 5 OFDM symbols with a 15kHz SCS.

[0152] For example, assuming an LEO of 600km, a beam size of 50km, and a target elevation angle of 30 degrees, the difference between the shortest RTT (minimum TA) and the longest RTT (maximum TA) can be within approximately 300μs, which corresponds to about 4-5 OFDM symbols with a 15kHz SCS. For example, considering a TA reporting granularity of 1ms in the NTN (e.g., 14 OFDM symbols with a 15kHz SCS), for the LEO example, the primary cause of TA mismatch could be TA reporting granularity rather than outdated TA reporting. For example, for an LEO of 600km, a beam size of 50km, and a target elevation angle of 30 degrees, the difference between the minimum TA and the maximum TA can be smaller than the TA reporting granularity (e.g., 1ms). For example, for HD-FDD(e)RedCap UE support, it may be necessary to address the issue of enhanced TA reporting mechanisms, particularly the issue of TA reporting granularity.

[0153] For example, DL / UL conflicts may exist under TA mismatch.

[0154] Comparing the timing advance of NTN and TN, the timing advance of the service link between the satellite and the UE can be estimated by the UE itself due to satellite movement. For example, although the gNB can obtain the TA value through TA reports, because the granularity of the current TA reports is 1ms, the gNB cannot obtain the accurate TA used by the UE, and does not know when and which transmissions will conflict on the UE side. For example, since the conflict between DL reception and UL transmission is intended to be avoided through gNB scheduling, this may be difficult for the gNB in ​​NTN, as the gNB may not be able to determine whether the UE is in an uplink or downlink time slot.

[0155] Figure 15 An HD conflict in an NTN based on an embodiment of this disclosure is shown. Figure 15 The implementation methods can be combined with various implementation methods of this disclosure.

[0156] Reference Figure 15 For example, the reported TA value could be 4ms. The actual TA value could be 3ms. The actual TA value could be 5ms.

[0157] For example, when the UE reports a TA value of 4ms and the gNB performs scheduling based on the reported value, where, assuming an SCS of 15kHz, the UE-specific K_offset is configured for four time slots, the UE can operate normally. For example, the actual TA value could be 4ms. However, as the satellite moves, the distance between the satellite and the UE continuously changes, which may cause the actual TA value used by the UE to increase or decrease. For example, the actual TA value could be 3ms. For example, the actual TA value could be 5ms. For example, when the gNB continues scheduling based on outdated reported values, conflicts may occur on the UE side, such as... Figure 15 The black-filled portion is shown in the image, while the blank portion can indicate that no scheduling was performed.

[0158] Despite Figure 15 The actual TA is shown as 3ms, 4ms, and 5ms, but this disclosure is not limited thereto. Although in Figure 15 The TA reported in the report is shown as 4ms, but this disclosure is not limited thereto.

[0159] For example, according to embodiments of this disclosure, half-duplex operation may include the following.

[0160] For example, an HD-UE may not expect to detect both the DCI format of a reception scheduled on a set of symbols and the DCI format of a transmission scheduled on any symbol in that set of symbols.

[0161] For example, if the UE's PDCCH reception includes two PDCCH candidates, the end of the later-ending PDCCH candidate can be the end of the PDCCH reception.

[0162] For example, an HD-UE may not expect the detection of dedicated higher-layer parameters for reception configured on a set of symbols and the DCI format for transmission scheduled on any of the symbols in that set.

[0163] For example, reception of PDCCH, PDSCH, CSI-RS, and DL PRS in the group of symbols configured by the higher layer can be performed (higher layer configured reception) when no DCI format indicating the transmission of PUSCH, PUCCH, PRACH, or SRS for at least one symbol in the group of symbols is detected.

[0164] For example, in the case of a high-level configuration of PUCCH or PUSCH relative to (vs) a CSI-RS or PDSCH indicated by a DCI format (CSI-RS indicated by a DCI format), - For example, if the first symbol sent by UL precedes the last symbol received by PDCCH for DCI format. If the UE does not cancel the UL transmission, then the UE may choose not to cancel the UL transmission. For example, otherwise, the UE may cancel the UL transmission.

[0165] For example, in the case of SRS configured at a higher level relative to (vs) CSI-RS or PDSCH indicated by DCI format (CSI-RS, PDSCH indicated by DCI format), For example, starting with the last symbol in the PDCCH reception for DCI format. SRS transmissions within a given symbol may not be cancelled, while SRS transmissions in other remaining symbols may be cancelled.

[0166] For example, This could be the PUSCH preparation time for UE processing capability 1 [refer to TS 38.214], assuming... Furthermore, μ can correspond to the minimum SCS configuration between the SCS configuration of the PDCCH carrying the DCI format and the SCS configuration of the SRS, PUCCH, and PUSCH.

[0167] For example, it is not desirable to simultaneously receive the Type-0 / 0A / 1 / 2-PDCCH CSS set configuration and the dedicated high-level parameters for transmission in that set of symbols within the same set of symbols.

[0168] For example, in the case where the PUSCH or PUCCH configured at a higher level is relative to (vs) the presence of an SSB within the DLBWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB (the presence of an SSB within the DLBWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB), - For example, if the TX-RX switching period is not guaranteed before the next earliest SSB, then PUSCH or PUCCH may not be sent.

[0169] - For example, if the RX-TX switching period is not guaranteed after the previous latest SSB, then PUSCH or PUCCH may not be sent.

[0170] For example, in the case where the SRS configured at the higher level is relative to (vs) the presence of an SSB within the DLBWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB (the presence of an SSB within the DLBWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB), - For example, SRS may not be sent in symbols that are not located at least during the TX-RX switching period before the next earliest SSB.

[0171] - For example, SRS may not be sent in symbols that are not located at least during the RX-TX switching period after the previous latest SSB.

[0172] For example, in the case of a PRACH, PUSCH, or PUCCH based on a PDCCH command relative to (vs) the presence of an SSB within a DLBWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB (the presence of an SSB within a DLBWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB), - For example, if the UL transmission overlaps with any symbol in the SSB's symbol duration, the UL transmission may not be performed.

[0173] For example, in the case of the presence of an SSB within a DLBWP relative to (vs) ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or ssb-PositionInBurst in ServingCellConfigCommon or ssb-PositionInBurst in ServingCellConfigCommon or ssb-PositionInBurst in ServingCellConfigCommon, ...), - For example, SRS may not be sent during the symbol duration of the SSB.

[0174] For example, in the case of a higher-layer triggered PRACH or MsgA PUSCH reception relative to (vs) PDCCH, PDSCH, CSI-RS, or DLPRS, and the presence of an SSB within the DL BWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB (reception of PDCCH, PDSCH, CSI-RS, DL PRS, or the presence of an SSB within the DL BWP indicated by ssb-PositionInBurst in SIB1 or ServingCellConfigCommon or by NonCellDefiningSSB), - For example, if symbol durations overlap, the operation may depend on the UE implementation.

[0175] - For example, if the TX-RX or RX-TX handover period is not guaranteed, this operation may depend on the UE implementation.

[0176] For example, in recent communications, the introduction of non-terrestrial networks (NTNs) using satellites as network nodes has been actively discussed. For example, satellites supporting NTNs can be classified according to their flight orbits and characteristics (such as GEO, MEO, and LEO), and can typically be at very high altitudes. For example, NTNs can serve UEs with reduced capability (RedCap) and / or enhanced reduced capability (eRedCap) supporting half-duplex frequency division duplex (HD-FDD) transmission schemes. For example, UEs supporting half-duplex transmission schemes may not be able to simultaneously perform DL reception and UL transmission; therefore, it may be necessary to define operating rules for the base station (or network) and / or UE when DL reception and UL transmission times overlap and / or conflict in the time domain (hereinafter referred to as DL / UL conflict handling rules). For example, it may be necessary to consider the information that needs to be prioritized in the NTN and / or the TA mismatch between the base station and the UE caused by the application of UE autonomous timing advance (TA) in the NTN to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode in the NTN. In this disclosure, a transmission method and device for a UE operating in half-duplex transmission mode in an NTN are proposed from the perspective of DL / UL conflict handling rules.

[0177] For example, the proposed solution #01 can be put forward.

[0178] For example, according to the proposed scheme #01, when the base station (or network) provides the UE with system information including information related to the aircraft / satellite (including the aircraft and / or satellite's travel path / orbit information (e.g., ephemeris)), a scheme can be proposed in which the half-duplex UE applies different DL / UL conflict handling rules for receiving the system information according to a specific timer value and / or a specific time period.

[0179] For example, a half-duplex UE can apply different DL / UL conflict handling rules for receiving system information based on specific timer values ​​and / or specific time periods.

[0180] (1) For example, when the remaining time of a specific timer is greater than / greater than or equal to a specific reference value (or the current time is within a specific time period).

[0181] A. For example, the reception of system information can be regarded as a general downlink reception that is dynamically and / or semi-statically indicated and / or configured, and DL / UL conflict handling rules (hereinafter referred to as the first DL / UL conflict handling rule) can be applied for the corresponding case.

[0182] (2) For example, when the remaining time of a specific timer is less than / less than or equal to a specific reference value (or the current time is outside a specific time period), (2) A. For example, the reception of system information can be regarded as a special downlink reception and a second DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied.

[0183] (2) B. For example, the UE may prioritize receiving system information instead of dynamically and / or semi-statically indicating and / or configuring (all and / or some) uplink transmissions. For example, an uplink transmission with higher priority than system information when following the first DL / UL conflict handling rule may be changed to have lower priority than system information when applying the second DL / UL conflict handling rule. For example, in the proposed scheme #01 or this disclosure, the UE may cancel and / or omit DL reception and / or UL transmission with lower priority.

[0184] For example, in the proposed solution #01 or this disclosure, the system information may include system information block 19 (SIB19) and / or system information block 22 (SIB22).

[0185] For example, in the proposed solution #01 or this disclosure, the system information may include information (or an SIB containing such information) related to satellites and / or AAMs and / or unmanned aerial vehicles and / or high-altitude platform stations (HAPS).

[0186] For example, in the proposed scheme #01 or this disclosure, the specific timer may refer to a timer related to the effectiveness of uplink synchronization and / or T430 and / or a timer separate from T430.

[0187] For example, in the proposed scheme #01 or this disclosure, the specific time period can be a time period starting from the epoch time where the specific timer (e.g., T430) is greater than or equal to the specific reference value.

[0188] For example, in the proposed scheme #01 or this disclosure, the half-duplex UE may have DL / UL conflict handling rules for DL / UL conflicts.

[0189] For example, in the proposed scheme #01 or this disclosure, the general uplink and / or downlink may refer to an uplink and / or downlink whose priority is not different from that of another uplink and / or downlink.

[0190] For example, in the proposed scheme #01 or this disclosure, the specific reference value may be a value configured / indicated to the UE by the base station (or network). For example, in the proposed scheme #01 or this disclosure, when the UE does not receive the configuration / instruction of the specific reference value, the UE may apply a second DL / UL conflict handling rule.

[0191] For example, in the proposed scheme #01 or this disclosure, the base station (or network) can directly configure / indicate to the UE which of the first DL / UL conflict handling rules and the second DL / UL conflict handling rules will be applied to the system information. For example, when the base station (or network) configures / indicates that the second DL / UL conflict handling rule will be applied to the system information, the second DL / UL conflict handling rule can always be applied, regardless of the specific timer value and / or the specific time period.

[0192] For example, in the proposed scheme #01 or this disclosure, DL / UL conflict handling rules can be applied based on potential time periods (e.g., SI windows) during which system information can be transmitted. For example, prioritizing the reception of system information by the base station and / or UE can have the same meaning as prioritizing the SI window period for system information.

[0193] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #01 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition according to the UE implementation.

[0194] For example, in proposed solution #01 or this disclosure, the base station (or network) may provide the UE with orbital information of aircraft and / or satellites included in a non-terrestrial network as system information. For example, this system information may be transmitted in SIB19 and / or SIB22. For example, in proposed solution #01 or this disclosure, the UE may perform time-domain and / or frequency-domain pre-compensation during uplink transmission using path and / or orbital information (e.g., ephemeris) of the aircraft and / or satellites. For example, therefore, the process by which the UE obtains system information related to the aircraft and / or satellites may precede important processes supporting uplink communication based on a non-terrestrial network. For example, therefore, it may be necessary to receive system information related to the aircraft and / or satellites with a higher priority than another general downlink reception. For example, when the UE is a half-duplex UE, the base station and / or the half-duplex UE may pre-agree / pre-define / pre-configure DL / UL conflict handling rules for prioritizing the reception of system information related to the aircraft and / or satellites.

[0195] For example, in the proposed solution #01 or this disclosure, DL / UL conflict handling rules for the corresponding system information can be applied differently based on the validity time limit of the corresponding system information. For example, for system information related to aircraft and / or satellites, there can be a timer indicating the validity of the information, and this timer can be started each time the corresponding system information is received. For example, in the proposed solution #01 or this disclosure, after a half-duplex UE receives system information related to aircraft and / or satellites, it has already obtained valid system information. Therefore, the system information can be regarded as a general downlink reception, and the DL / UL conflict handling rule for the corresponding case (hereinafter referred to as the first DL / UL conflict handling rule) can be applied. For example, conversely, when there is little time remaining on the timer, the validity of the system information related to aircraft and / or satellites may expire soon. Therefore, unlike the first DL / UL conflict handling rule, it may be desirable to prioritize the reception of this system information rather than another (all and / or some) uplink transmission.

[0196] For example, this disclosure can therefore propose a scheme in which, when a base station (or network) provides a UE with system information including information related to an aircraft / satellite (including the aircraft and / or satellite's path / orbit information (e.g., ephemeris)), the half-duplex UE applies different DL / UL conflict handling rules for receiving this system information based on specific timer values ​​and / or specific time periods. For example, the half-duplex UE may apply different DL / UL conflict handling rules for receiving this system information based on specific timer values ​​and / or specific time periods as follows.

[0197] (1) For example, when the remaining time of a specific timer is greater than / greater than or equal to a specific reference value (or the current time is within a specific time period), (1) A. For example, the reception of system information can be regarded as a general downlink reception that is dynamically and / or semi-statically indicated and / or configured, and DL / UL conflict handling rules (hereinafter referred to as the first DL / UL conflict handling rule) can be applied for the corresponding case.

[0198] (2) For example, when the remaining time of a specific timer is less than / less than or equal to a specific reference value (or the current time is outside a specific time period), (2) A. For example, the reception of system information can be regarded as a special downlink reception and a second DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied.

[0199] (2) B. For example, the UE may prioritize receiving system information instead of dynamically and / or semi-statically indicating and / or configuring (all and / or some) uplink transmissions. For example, an uplink transmission with higher priority than system information when following the first DL / UL conflict handling rule may be changed to have lower priority than system information when applying the second DL / UL conflict handling rule. For example, in the proposed scheme #01 or this disclosure, the UE may cancel and / or omit DL reception and / or UL transmission with lower priority.

[0200] For example, according to this disclosure (e.g., the proposed solution #01), the base station (or network) has the advantage that it can control priorities based on the remaining effective time of system information related to the aircraft and / or satellite, thereby operating the resources of the half-duplex UE more efficiently.

[0201] For example, the proposed solution #01 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0202] For example, the proposed solution #02 can be put forward.

[0203] For example, according to the proposed scheme #02, when the base station (or network) provides the UE with system information including information related to the aircraft / satellite (including the aircraft and / or satellite's travel path / orbit information (e.g., ephemeris)), a scheme can be proposed in which the half-duplex UE applies different DL / UL conflict handling rules for receiving the system information based on the scheduling type (for the system information).

[0204] For example, a half-duplex UE can apply different DL / UL conflict handling rules for receiving system information based on the scheduling type (for system information).

[0205] (1) In the case of unicast scheme (or in the case of non-periodic transmission), (1) A. The reception of system information can be regarded as a general downlink reception that is dynamically and / or semi-statically indicated and / or configured, and DL / UL conflict handling rules (hereinafter referred to as the first DL / UL conflict handling rule) can be applied for the corresponding case.

[0206] (2) In the case of a broadcast scheme (or in the case of periodic transmission), (2) A. The reception of system information can be regarded as a special downlink reception and a second DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied.

[0207] (2) B. For example, the UE may prioritize receiving system information instead of dynamically and / or semi-statically indicating and / or configuring (all and / or some) uplink transmissions. For example, an uplink transmission with higher priority than system information when following the first DL / UL conflict handling rule may be changed to have lower priority than system information when applying the second DL / UL conflict handling rule. For example, in the proposed scheme #02 or this disclosure, the UE may cancel and / or omit DL reception and / or UL transmission with lower priority.

[0208] For example, in the proposed solution #02 or this disclosure, the system information may include system information block 19 (SIB19) and / or system information block 22 (SIB22).

[0209] For example, in the proposed scheme #02 or this disclosure, the system information may include information (or an SIB that includes such information) related to satellites and / or AAMs and / or unmanned aerial vehicles and / or high-altitude platform stations (HAPS).

[0210] For example, in the proposed scheme #02 or this disclosure, the scheduling type may include unicast and / or broadcast and / or periodic transmission and / or aperiodic transmission. For example, a broadcast scheme may refer to a scheme in which transmission is performed through resources configured / indicated periodically.

[0211] For example, in the proposed scheme #02 or this disclosure, the scheduling type may include (scheduling) DCI type (e.g., whether the DCI is a fallback DCI and / or a non-fallback DCI), (scheduling) search space / CORESET type, whether DGPUSCH skipping is enabled, whether CG PUSCH skipping is enabled, and / or whether actual PUSCH is sent.

[0212] For example, in the proposed scheme #02 or this disclosure, the half-duplex UE may have DL / UL conflict handling rules for DL / UL conflicts.

[0213] For example, in the proposed scheme #02 or this disclosure, the general uplink and / or downlink may refer to an uplink and / or downlink whose priority is not different from that of another uplink and / or downlink.

[0214] For example, in the proposed scheme #02 or this disclosure, the base station (or network) can directly configure / indicate to the UE which of the first DL / UL conflict handling rules and the second DL / UL conflict handling rules will be applied to the system information. For example, when the base station (or network) configures / indicates that the second DL / UL conflict handling rule will be applied to the system information, the second DL / UL conflict handling rule can always be applied, regardless of a specific timer value and / or a specific time period.

[0215] For example, in proposed scheme #02 or this disclosure, DL / UL conflict handling rules can be applied based on a potential time period (e.g., SI window) during which system information can be transmitted. For example, prioritizing the reception of system information by the base station and / or UE can have the same meaning as prioritizing the SI window period for system information. For example, in proposed scheme #02 or this disclosure, the SI window period can be a resource period related to the synchronization signal block (SSB) observed when the UE obtains the master information block (MIB).

[0216] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #02 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition according to the UE implementation.

[0217] For example, in proposed solution #02 or this disclosure, the base station (or network) can provide the UE with orbital information of aircraft and / or satellites included in a non-terrestrial network as system information. For example, this system information can be transmitted in SIB19 and / or SIB22. For example, in proposed solution #02 or this disclosure, the UE can perform time-domain and / or frequency-domain pre-compensation during uplink transmission using the path and / or orbital information (e.g., ephemeris) of the aircraft and / or satellites. For example, therefore, the process by which the UE obtains system information related to the aircraft and / or satellites may precede important processes supporting uplink communication based on a non-terrestrial network. For example, therefore, it may be necessary to receive system information related to the aircraft and / or satellites with a higher priority than another general downlink reception. For example, when the UE is a half-duplex UE, the base station and / or the half-duplex UE can pre-agree / predefine / pre-configure DL / UL conflict handling rules for prioritizing the reception of system information related to the aircraft and / or satellites.

[0218] For example, in the proposed scheme #02 or this disclosure, DL / UL conflict handling rules for the corresponding system information can be applied differently depending on the scheduling type of the system information. For example, when the system information is transmitted in a UE-specific unicast scheme, the system information can be treated as general downlink reception, and a DL / UL conflict handling rule for the corresponding case (hereinafter referred to as the first DL / UL conflict handling rule) can be applied. When the system information is transmitted in a broadcast scheme within a periodically provided SI window, a DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied to receive the system information in priority over another (all and / or some) uplink transmission (hereinafter referred to as the second DL / UL conflict handling rule). For example, this disclosure can therefore propose a scheme in which, when the base station (or network) provides the UE with system information including information related to the aircraft / satellite (including the aircraft and / or satellite's path / orbit information (e.g., ephemeris)), the half-duplex UE applies different DL / UL conflict handling rules for receiving the system information according to the scheduling type (for the system information). For example, a half-duplex UE can apply different DL / UL conflict handling rules for receiving system information based on the scheduling type (for system information).

[0219] (1) For example, in the case of a unicast scheme (or in the case of non-periodic transmission). (1) A. For example, the reception of system information can be regarded as a general downlink reception that is dynamically and / or semi-statically indicated and / or configured, and DL / UL conflict handling rules (hereinafter referred to as the first DL / UL conflict handling rule) can be applied for the corresponding case.

[0220] (2) For example, in the case of a broadcast scheme (or in the case of periodic transmission). (2) A. For example, the reception of system information can be regarded as a special downlink reception and a second DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied.

[0221] (2) B. For example, the UE may prioritize receiving system information instead of dynamically and / or semi-statically indicating and / or configuring (all and / or some) uplink transmissions. For example, an uplink transmission with higher priority than system information when following the first DL / UL conflict handling rule may be changed to have lower priority than system information when applying the second DL / UL conflict handling rule. For example, in the proposed scheme #02 or this disclosure, the UE may cancel and / or omit DL reception and / or UL transmission with lower priority.

[0222] For example, according to this disclosure (e.g., the proposed solution #02), the base station (or network) can control priorities based on the scheduling type of system information related to the aircraft and / or satellite, thereby operating the resources of the half-duplex UE more efficiently.

[0223] For example, the proposed solution #02 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0224] For example, the proposed solution #03 can be put forward.

[0225] For example, according to the proposed scheme #03, when a base station (or network) in a non-terrestrial network can indicate / configure to the UE whether to support a scheduling request (SR) triggered by a TA report (e.g., an SR triggered by a TA report), a scheme can be proposed in which DL / UL conflict handling rules for SR transmission channels and / or SR transmissions are applied differently depending on whether an SR triggered by a TA report is indicated / configured.

[0226] For example, a half-duplex UE may apply different DL / UL conflict handling rules for the SR transmission channel and / or SR transmission depending on whether an SR triggered by a TA report is indicated / configured.

[0227] (1) For example, when no SR is indicated / configured by a TA report, (1) A. For example, the SR transmission channel and / or the SR transmission can be regarded as a general uplink transmission that is dynamically and / or semi-statically indicated and / or configured, and DL / UL conflict handling rules (hereinafter referred to as the first DL / UL conflict handling rule) can be applied for the corresponding case.

[0228] (2) For example, when an SR triggered by a TA report is indicated / configured, (2) A. For example, the SR transmission channel and / or the SR transmission can be regarded as a special uplink transmission and a second DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied.

[0229] (2) B. For example, the UE may prioritize the SR transmission channel and / or the SR transmission, rather than dynamically and / or semi-statically indicating and / or configuring (all and / or some) downlink reception. For example, a downlink reception with a higher priority than the SR transmission channel and / or SR transmission when following the first DL / UL conflict handling rule may be changed to have a lower priority than the SR transmission channel and / or SR transmission when applying the second DL / UL conflict handling rule. For example, in the proposed scheme #03 or this disclosure, the UE may cancel and / or omit DL reception and / or UL transmission with lower priority.

[0230] For example, in the proposed scheme #03 or this disclosure, the system information may refer to system information block 19 (SIB19).

[0231] For example, in the proposed scheme #03 or this disclosure, the scheduling type may include unicast and / or broadcast.

[0232] For example, in the proposed scheme #03 or this disclosure, the half-duplex UE may have DL / UL conflict handling rules for DL / UL conflicts.

[0233] For example, in the proposed scheme #03 or this disclosure, the general uplink and / or downlink may refer to an uplink and / or downlink whose priority is not different from that of another uplink and / or downlink.

[0234] For example, in the proposed scheme #03 or this disclosure, the base station (or network) can directly configure / indicate to the UE which of the first DL / UL conflict handling rules and the second DL / UL conflict handling rules will be applied to the SR transmission channel and / or the SR transmission. For example, when the base station (or network) configures / indicates that the second DL / UL conflict handling rule will be applied to the SR transmission channel and / or the SR transmission, the second DL / UL conflict handling rule can always be applied, regardless of whether an SR triggered by a TA report is indicated / configured.

[0235] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #03 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition according to the UE implementation.

[0236] For example, in the proposed scheme #03 or this disclosure, in an NTN system, the UE can report a TA to the base station (or network), and the base station (or network) can allow the UE to trigger a scheduling request (SR) for the TA report. For example, when the UE needs a TA report but has not been given UL permission, the UE can trigger an SR to request uplink resource allocation. For example, in the proposed scheme #03 or this disclosure, since the SR transmission based on the TA report is important information for uplink synchronization in satellite communications, this SR transmission may need to take precedence over another transmission. For example, when the UE is a half-duplex UE, the base station and / or the half-duplex UE can pre-agree / pre-define / pre-configure DL / UL conflict handling rules for prioritizing the transmission of SR transmissions based on TA reports and / or the SR transmission channel.

[0237] For example, in the proposed scheme #03 or this disclosure, the DL / UL conflict handling rules for SR transmission and / or SR transmission channels can be applied differently depending on whether an SR triggered by a TA report is indicated / configured. For example, when an SR triggered by a TA report is not indicated / configured, the SR transmission and / or the SR transmission channel can be treated as a general uplink transmission, and a DL / UL conflict handling rule for the corresponding case (hereinafter referred to as the first DL / UL conflict handling rule) can be applied. Conversely, when an SR triggered by a TA report is indicated / configured, another DL / UL conflict handling rule, different from the first DL / UL conflict handling rule, can be applied to prioritize SR transmission and / or the SR transmission channel over another (all and / or some) downlink reception (hereinafter referred to as the second DL / UL conflict handling rule). For example, this disclosure can therefore propose a scheme in which, when a base station (or network) in a non-terrestrial network can indicate / configure to the UE whether to support a scheduling request (SR) triggered by a TA report (e.g., an SR triggered by a TA report), DL / UL conflict handling rules for the SR transmission channel and / or SR transmission are applied differently depending on whether an SR triggered by a TA report is indicated / configured. For example, a half-duplex UE can apply DL / UL conflict handling rules for the SR transmission channel and / or SR transmission differently depending on whether an SR triggered by a TA report is indicated / configured, as follows.

[0238] (1) For example, when no SR is indicated / configured by a TA report, (1) A. For example, the SR transmission channel and / or the SR transmission can be regarded as a general uplink transmission that is dynamically and / or semi-statically indicated and / or configured, and DL / UL conflict handling rules (hereinafter referred to as the first DL / UL conflict handling rule) can be applied for the corresponding case.

[0239] (2) For example, when an SR triggered by a TA report is indicated / configured, (2) A. For example, the SR transmission channel and / or the SR transmission can be regarded as a special uplink transmission and a second DL / UL conflict handling rule different from the first DL / UL conflict handling rule can be applied.

[0240] (2) B. For example, the UE may prioritize the SR transmission channel and / or the SR transmission, rather than dynamically and / or semi-statically indicating and / or configuring (all and / or some) downlink reception. For example, a downlink reception with a higher priority than the SR transmission channel and / or SR transmission when following the first DL / UL conflict handling rule may be changed to have a lower priority than the SR transmission channel and / or SR transmission when applying the second DL / UL conflict handling rule. For example, in the proposed scheme #03 or this disclosure, the UE may cancel and / or omit DL reception and / or UL transmission with lower priority.

[0241] For example, according to this disclosure (e.g., the proposed scheme #03), the base station (or network) can control the half-duplex UE to prioritize SR transmission and / or SR transmission channel for TA reporting instead of another downlink reception, thereby ensuring uplink stability of the half-duplex UE in non-terrestrial networks.

[0242] For example, the proposed solution #03 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0243] For example, the proposed solution #04 can be put forward.

[0244] For example, according to the proposed scheme #04, when the base station (or network) and / or UE execute DL / UL conflict handling rules in a non-terrestrial network according to the half-duplex transmission mode and / or the determination / counting of valid UL symbols / slots, a scheme can be proposed in which the base station (or network) and / or UE use one of the following methods to interpret UL transmission periods that overlap with a specific DL reception period (hereinafter referred to as the first period).

[0245] (1) For example, Method 1

[0246] (1) A. For example, start time point: UL transmission time point with the same time index as the start time point of the DL reception period + common TA - first offset

[0247] (1) B. For example, end time point: UL transmission time point with the same time index as the end time point of the DL reception period + common TA + second offset

[0248] (2) For example, method 2

[0249] (2) A. For example, start time point: UL transmission time point with the same time index as the start time point of the DL reception period + (latest) reported TA - third offset

[0250] (2) B. For example, end time point: UL transmission time point with the same time index as the end time point of the DL reception period + (latest) reported TA + fourth offset

[0251] (3) For example, method 3

[0252] (3) A. For example, the starting time point: the UL transmission time point with the same time index as the starting time point of the DL reception period - fifth offset.

[0253] (3) B. For example, end time point: UL transmission time point with the same time index as the end time point of the DL reception period + sixth offset.

[0254] For example, in the proposed scheme #04 or this disclosure, the UE may refer to a half-duplex UE.

[0255] For example, in the proposed scheme #04 or this disclosure, the DL reception may refer to SSB reception, and in this case, the DL reception period may include TX-RX switching time and / or RX-TX switching time.

[0256] For example, in the proposed scheme #04 or this disclosure, the first offset and / or the second offset may be values ​​(pre)agreed and / or (pre)configured between the base station (or network) and the UE.

[0257] For example, in proposed scheme #04 or this disclosure, the third offset and / or fourth offset may be values ​​(pre)agreed and / or (pre)configured between the base station (or network) and the UE. For example, in proposed scheme #04 or this disclosure, the third offset and / or fourth offset may be a threshold (or a value modified thereto) for TA reports.

[0258] For example, in proposed scheme #04 or this disclosure, the fifth offset and / or the sixth offset may be values ​​(pre)agreed and / or (pre)configured between the base station (or network) and the UE. For example, in proposed scheme #04 or this disclosure, the fifth offset and / or the sixth offset may correspond to the minimum TA and / or maximum TA values ​​determined according to the beam radius.

[0259] For example, in the proposed scheme #04 or this disclosure, the TA report may refer to the TA report during the initial access process and / or the TA report in the connection mode.

[0260] For example, in the proposed scheme #04 or this disclosure, the base station (or network) and / or UE can perform DL / UL conflict handling rules and / or determine / count valid UL symbols / time slots based on the overlapping UL transmission periods.

[0261] For example, in the proposed scheme #04 or this disclosure, the overlapping UL transmission periods can be used for time calculations to determine whether to cancel UL transmission and / or to determine the UL transmission periods to be canceled.

[0262] For example, in proposed scheme #04 or this disclosure, the base station (or network) can configure / indicate to the UE which of these methods will be applied.

[0263] For example, in the proposed scheme #04 or this disclosure, the common TA may refer to the timing advance (TA) value based on the reference point (RP) of the NTN. The base station (or network) may send parameters related to the common TA to the UE, and the UE may calculate the common TA based on the parameters.

[0264] For example, in proposed scheme #04 or this disclosure, the UE may follow the method of the proposed scheme to determine / count valid UL symbols / time slots. However, when the UL transmission period (hereinafter referred to as the second period) that overlaps with a specific DL reception period when reflecting the actual TA is different from the first period, the UE may omit UL transmission within the second period outside the first period. For example, the determination / counting of valid UL symbols / time slots may be based on the first period, but whether UL transmission is actually performed may be determined with reference to the second period.

[0265] For example, in the proposed scheme #04 or this disclosure, the first offset and / or the second offset and / or the third offset and / or the fourth offset and / or the fifth offset and / or the sixth offset can be determined / configured based on the minimum / maximum TA value for each satellite coverage area and / or beam coverage area.

[0266] For example, in the proposed scheme #04 or this disclosure, some and / or all (time) parameters used to calculate the UL transmission period can be applied after quantization in units of symbols and / or symbol groups and / or time slots.

[0267] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #04 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition.

[0268] For example, in proposed scheme #04 or this disclosure, the base station (or network) and / or half-duplex UE may prioritize specific DL reception and may agree not to perform UL transmissions overlapping with such DL reception. For example, the DL reception may be a Synchronization Signal Block (SSB). For example, in proposed scheme #04 or this disclosure, the UE may determine that UL transmission is invalid throughout the entire time period, including the SSB period and the TX-RX gap and / or RX-TX gap before and after that period. For example, in proposed scheme #04 or this disclosure, in the case of an NTN system, the UE may apply a common TA based on the NTN reference point (RP) and / or a UE-specific TA (hereinafter referred to as UE TA) applied autonomously by the UE. For example, in proposed scheme #04 or this disclosure, the UE TA may correspond to several time slots in an NTN environment with a large RTT, but may have characteristics unknown to the base station (or network). For example, a discrepancy may arise between the TA value assumed by the base station for the UE and the TA value actually used by the UE, and the base station may be unable to determine how the UE will interpret UL transmission periods overlapping with SSBs. For example, in the proposed scheme #04 or this disclosure, this problem may affect not only the DL / UL conflict handling rules, but also the determination / counting performed by the UE for valid UL symbols / slots.

[0269] For example, this disclosure may therefore propose a scheme in which, when a base station (or network) and / or UE execute DL / UL conflict handling rules in a non-terrestrial network according to the determination / counting of a half-duplex transmission mode and / or valid UL symbols / time slots, the base station (or network) and / or UE use one of the following methods to interpret UL transmission periods that overlap with a specific DL reception period (hereinafter referred to as the first period).

[0270] (1) For example, Method 1

[0271] (1) A. For example, start time point: UL transmission time point with the same time index as the start time point of the DL reception period + common TA - first offset

[0272] (1) B. For example, end time point: UL transmission time point with the same time index as the end time point of the DL reception period + common TA + second offset

[0273] (2) For example, method 2

[0274] (2) A. For example, start time point: UL transmission time point with the same time index as the start time point of the DL reception period + (latest) reported TA - third offset

[0275] (2) B. For example, end time point: UL transmission time point with the same time index as the end time point of the DL reception period + (latest) reported TA + fourth offset

[0276] (3) For example, method 3

[0277] (3) A. For example, the starting time point: the UL transmission time point with the same time index as the starting time point of the DL reception period - fifth offset.

[0278] (3) B. For example, end time point: UL transmission time point with the same time index as the end time point of the DL reception period + sixth offset.

[0279] For example, according to this disclosure (e.g., proposed solution #04), overlapping UL transmission periods are derived for a specific DL reception period by applying pre-agreed / pre-configured offsets based on reference points known to both the base station (or network) and the UE (e.g., public TA and / or (latest) reported TA). This has the advantage that the base station (or network) and the UE can have the same understanding / interpretation of DL / UL conflict handling rules and / or the determination / counting of valid UL symbols / slots. For example, the base station (or network) and / or the UE can consider canceled / omitted transmission resources to support efficient resource management.

[0280] For example, the proposed solution #04 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0281] For example, the proposed solution #05 can be put forward.

[0282] For example, according to the proposed scheme #05, when the base station (or network) and / or UE execute DL / UL conflict handling rules in a non-terrestrial network according to the half-duplex transmission mode and / or the determination / counting of valid UL symbols / time slots, a scheme can be proposed in which the base station (or network) and / or UE use one of the following methods to interpret DL reception periods that overlap with a specific UL transmission period.

[0283] (1) For example, Method 1

[0284] (1) A. For example, start time point: DL receive time point with the same time index as the start time point of the UL transmission period - common TA - first offset

[0285] (1) B. For example, end time point: DL receive time point with the same time index as the end time point of the UL transmission period - common TA + second offset

[0286] (2) For example, method 2

[0287] (2) A. For example, start time point: DL receive time point with the same time index as the start time point of the UL transmission period - (latest) reported TA - third offset

[0288] (2) B. For example, end time point: DL reception time point with the same time index as the end time point of the UL transmission period - (latest) reported TA + fourth offset

[0289] (3) For example, method 3

[0290] (3) A. For example, the starting time point: the DL receiving time point with the same time index as the starting time point of the UL transmission period - fifth offset.

[0291] (3) B. For example, end time point: DL receive time point with the same time index as the end time point of the UL transmission period + sixth offset.

[0292] For example, in the proposed scheme #05 or this disclosure, the UE may refer to a half-duplex UE.

[0293] For example, in the proposed scheme #05 or this disclosure, the DL reception may refer to SSB reception, and in this case, the DL reception period may include TX-RX switching time and / or RX-TX switching time.

[0294] For example, in the proposed scheme #05 or this disclosure, the first offset and / or the second offset may be values ​​(pre)agreed and / or (pre)configured between the base station (or network) and the UE.

[0295] For example, in proposed solution #05 or this disclosure, the third offset and / or fourth offset may be values ​​(pre)agreed and / or (pre)configured between the base station (or network) and the UE. For example, in proposed solution #05 or this disclosure, the third offset and / or fourth offset may be a threshold (or a value modified thereto) for TA reports.

[0296] For example, in the proposed scheme #05 or this disclosure, the fifth offset and / or the sixth offset may be values ​​pre-agreed and / or pre-configured between the base station (or network) and the UE. For example, in the proposed scheme #05 or this disclosure, the fifth offset and / or the sixth offset may correspond to the minimum TA and / or maximum TA values ​​determined according to the beam radius.

[0297] For example, in the proposed scheme #05 or this disclosure, the TA report may refer to the TA report during the initial access process and / or the TA report in the connection mode.

[0298] For example, in the proposed scheme #05 or this disclosure, the base station (or network) and / or UE can perform DL / UL conflict handling rules and / or determination / counting of valid UL symbols / slots based on the overlapping UL transmission periods.

[0299] For example, in the proposed scheme #05 or this disclosure, the base station (or network) and / or UE can perform DL / UL conflict handling rules and / or determination / counting of valid UL symbols / time slots based on the overlapping DL reception periods.

[0300] For example, in the proposed scheme #05 or this disclosure, the overlapping DL reception periods can be used for time calculations to determine whether to cancel UL transmission and / or to determine the UL transmission period to be canceled.

[0301] For example, in proposed scheme #05 or this disclosure, the base station (or network) can configure / indicate to the UE which of these methods will be applied.

[0302] For example, in the proposed scheme #05 or this disclosure, the common TA may refer to the timing advance (TA) value based on the reference point (RP) of the NTN. The base station (or network) may send parameters related to the common TA to the UE, and the UE may calculate the common TA based on the parameters.

[0303] For example, in the proposed scheme #05 or this disclosure, the first offset and / or the second offset and / or the third offset and / or the fourth offset and / or the fifth offset and / or the sixth offset can be determined / configured based on the minimum / maximum TA value for each satellite coverage area and / or beam coverage area.

[0304] For example, in the proposed scheme #05 or this disclosure, some and / or all (time) parameters used to calculate the DL reception period can be applied after quantization in units of symbols and / or symbol groups and / or time slots.

[0305] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #05 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition according to the UE implementation.

[0306] For example, in proposed scheme #05 or this disclosure, the base station (or network) and / or half-duplex UE may prioritize specific UL transmissions and may agree not to perform some DL receptions that overlap with those UL transmissions. For example, the UL transmission may be a dynamically scheduled PUSCH, and the DL reception may be a semi-statically configured PDSCH. For example, in proposed scheme #05 or this disclosure, the UE may determine that DL receptions are invalid during the UL transmission period. For example, in proposed scheme #05 or this disclosure, in the case of an NTN system, the UE may apply a common TA based on the NTN reference point (RP) and / or a UE-specific TA (hereinafter referred to as UE TA) applied autonomously by the UE. For example, in proposed scheme #05 or this disclosure, the UE TA may correspond to several time slots in an NTN environment with a large RTT, but may have characteristics unknown to the base station (or network). For example, therefore, a difference may arise between the TA value assumed by the base station for the UE and the TA value actually applied by the UE, and the base station may be unable to determine how the UE will interpret DL reception periods that overlap with UL transmission periods. For example, in the proposed scheme #05 or this disclosure, the problem may affect not only the DL / UL conflict handling rules, but also the determination / counting performed by the UE for valid UL symbols / slots.

[0307] For example, this disclosure may therefore propose a scheme in which, when a base station (or network) and / or UE execute DL / UL conflict handling rules in a non-terrestrial network according to the determination / counting of a half-duplex transmission mode and / or valid UL symbols / time slots, the base station (or network) and / or UE use one of the following methods to interpret DL reception periods that overlap with a specific UL transmission period.

[0308] (1) For example, Method 1

[0309] (1) A. For example, start time point: DL receive time point with the same time index as the start time point of the UL transmission period - common TA - first offset

[0310] (1) B. For example, end time point: DL receive time point with the same time index as the end time point of the UL transmission period - common TA + second offset

[0311] (2) For example, method 2

[0312] (2) A. For example, start time point: DL receive time point with the same time index as the start time point of the UL transmission period - (latest) reported TA - third offset

[0313] (2) B. For example, end time point: DL reception time point with the same time index as the end time point of the UL transmission period - (latest) reported TA + fourth offset

[0314] (3) For example, method 3

[0315] (3) A. For example, the starting time point: the DL receiving time point with the same time index as the starting time point of the UL transmission period - fifth offset.

[0316] (3) B. For example, end time point: DL receive time point with the same time index as the end time point of the UL transmission period + sixth offset.

[0317] For example, according to this disclosure (e.g., proposed solution #05), overlapping DL reception periods are derived for a specific UL transmission period by applying pre-agreed / pre-configured offsets based on reference points known to both the base station (or network) and the UE (e.g., public TA and / or (latest) reported TA). This has the advantage that the base station (or network) and / or UE can have the same understanding / interpretation of DL / UL conflict handling rules and / or the determination / counting of valid UL symbols / slots. For example, the base station (or network) and / or UE can consider canceled / omitted transmission resources to support efficient resource management.

[0318] For example, the proposed solution #05 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0319] For example, the proposed solution #06 can be put forward.

[0320] For example, according to the proposed scheme #06, when the base station (or network) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station and / or UE prioritize UL transmission for advance timing (TA) reporting instead of another (specific) DL reception.

[0321] For example, in proposed scheme #06 or this disclosure, the TA report may include one or more of the following.

[0322] (1) For example, TA reports during the RRC establishment / restoration / reconstruction process.

[0323] (1) A. For example, the UE may send a TA report to the base station via MAC CE in MSG3 (e.g., UL scheduling transmission based on random access response (RAR)) during the initial access process.

[0324] (2) For example, the TA report during the handover process.

[0325] (2) A. For example, the UE can send a TA report to the base station via the MAC CE in the RRC configuration completion message during the handover process.

[0326] (3) For example, TA reports triggered by events.

[0327] (3) A. For example, when a TA report is triggered by a (specific) event, the UE can send the TA report to the base station via MAC CE.

[0328] For example, in the proposed scheme #06 or this disclosure, the half-duplex UE may have DL / UL conflict handling rules for DL / UL conflicts.

[0329] For example, in the proposed scheme #06 or this disclosure, the (specific) DL reception may refer to PDSCH reception and / or PDCCH reception. For example, the (specific) DL reception may refer to PDSCH reception and / or PDCCH reception used for data scheduling.

[0330] For example, in proposed scheme #06 or this disclosure, the base station can configure / instruct / agree with the UE on information relating to time resources and / or time periods in which UL transmission for TA reporting takes precedence over another (specific) DL reception, and the UE can prioritize UL transmission for TA reporting over the other (specific) DL reception within those time resources and / or time periods. For example, the base station can configure / instruct / agree with the UE on (dedicated) UL transmission resources for TA reporting, and the UE can prioritize UL transmission over (specific) DL reception within those (dedicated) UL transmission resources for TA reporting. For example, the base station can configure / instruct / agree with the UE on timers and / or time periods for TA reporting, and the UE can prioritize UL transmission over (specific) DL reception before and / or during the time period when the timer for TA reporting expires.

[0331] For example, in the proposed scheme #06 or this disclosure, the base station (or network) can configure / instruct the UE on DL / UL conflict handling rules for TA reports. For example, the base station (or network) can configure the UE to apply a DL / UL conflict handling rule in which the UE prioritizes TA reporting over receiving another specific DL (first DL / UL conflict handling rule), or it can configure the UE to apply a DL / UL conflict handling rule for the case where the TA report is assumed to be a general UL transmission (second DL / UL conflict handling rule).

[0332] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #06 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition.

[0333] For example, in proposed scheme #06 or this disclosure, a UE operating in a non-terrestrial network can report a UE TA value that the UE can pre-compensate for itself to the base station (or network). For example, the UE can send a TA report to the base station (or network) via MAC CE. For example, in proposed scheme #06 or this disclosure, the TA report can be important information used by the base station to estimate the RTT (hereinafter referred to as K_offset) between the reference point (RP) and the UE, and the K_offset can be reflected in various scheduling timings. For example, the UE can increase the uplink transmission timing by adding the K_offset to the regular transmission timing. For example, in proposed scheme #06 or this disclosure, when the K_offset is not applied long enough, the transmission time point corresponding to the UL scheduling may precede the time point when the UE receives the UL scheduling instruction from the base station (or network), and in this case, UL transmission may not be possible. For example, therefore, in a non-terrestrial network, the TA report may need to be considered important information, and when applying DL / UL conflict handling rules for half-duplex UEs, it may be necessary to ensure that the TA report is sent with high priority. For example, this disclosure may therefore propose a scheme in which, when a base station (or network) and / or a UE execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, the UE prioritizes a UL transmission for advance timing (TA) reporting rather than another (specific) DL reception. For example, the (specific) DL reception may refer to a general DL reception.

[0334] For example, according to this disclosure (e.g., the proposed solution #06), it has the following advantages: it can alleviate the omission of TA reports for half-duplex UEs in non-terrestrial networks, and can support correct RTT calculation and scheduling timing configuration by supporting the sending of TA reports to the base station (or network) as much as possible.

[0335] For example, the proposed solution #06 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0336] For example, the proposed solution #07 can be put forward.

[0337] For example, according to the proposed scheme #07, when the base station (or network) and / or UE can execute the DL / UL conflict handling rule in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station and / or UE apply the DL / UL conflict handling rule differently according to the HARQ feedback enable / disable configuration for DL ​​reception and / or the HARQ mode A / mode B configuration for UL transmission.

[0338] For example, a half-duplex UE can apply the DL / UL conflict handling rules differently based on the HARQ feedback received for DL ​​and / or the HARQ mode A / mode B configuration sent for UL, as shown below.

[0339] (1) For example, Method 1: Preferring (HARQ feedback disabled) DL reception and / or (HARQ mode B) UL transmission over (HARQ feedback enabled) DL reception and / or (HARQ mode A) UL transmission.

[0340] (2) For example, method 2: prioritizing DL reception (HARQ feedback enabled) and / or UL transmission (HARQ mode A) instead of DL reception (HARQ feedback disabled) and / or UL transmission (HARQ mode B).

[0341] For example, in the proposed scheme #07 or this disclosure, the half-duplex UE may have DL / UL conflict handling rules for DL / UL conflicts.

[0342] For example, in the proposed scheme #07 or this disclosure, the DL reception and / or the UL transmission can be dynamically scheduled and / or semi-statically configured DL reception and / or UL transmission.

[0343] For example, in the proposed scheme #07 or this disclosure, HARQ feedback and / or DL ​​retransmission can be performed when HARQ feedback is enabled, and HARQ feedback and / or DL ​​retransmission can be not performed when HARQ feedback is disabled.

[0344] For example, in the proposed scheme #07 or this disclosure, when the HARQ mode is mode A, UL retransmission can be performed, and when the HARQ mode is mode B, UL retransmission can be omitted.

[0345] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #07 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition according to the UE implementation.

[0346] For example, in proposed solution #07 or this disclosure, in non-terrestrial networks, due to high round-trip time (RTT) delays caused by high altitude, a large number of hybrid ARQ (HARQ) processes may need to be operated. For example, in proposed solution #07 or this disclosure, when the number of HARQ processes increases significantly, the base station and / or UE may struggle to support all HARQ processes; therefore, HARQ feedback disabled and / or HARQ mode B can be configured for some HARQ processes. For example, in proposed solution #07 or this disclosure, for HARQ processes configured with HARQ feedback disabled and / or HARQ mode B as described above, the impact of some transmissions being dropped and / or omitted may be greater than the case where HARQ feedback enabled and / or HARQ mode A is configured. For example, therefore, when the UE applies DL / UL conflict handling rules according to half-duplex mode, it may be desirable to prioritize DL reception and / or UL transmission configured with HARQ feedback disabled and / or HARQ mode B. For example, this disclosure may propose a scheme in which, when a base station (or network) and / or a UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, the base station and / or the UE apply the DL / UL conflict handling rules differently based on the HARQ feedback enabled / disabled configuration for DL ​​reception and / or the HARQ mode A / mode B configuration for UL transmission. For example, a half-duplex UE may apply the DL / UL conflict handling rules differently based on the HARQ feedback enabled / disabled configuration for DL ​​reception and / or the HARQ mode A / mode B configuration for UL transmission, as follows.

[0347] (1) For example, Method 1: Preferring (HARQ feedback disabled) DL reception and / or (HARQ mode B) UL transmission over (HARQ feedback enabled) DL reception and / or (HARQ mode A) UL transmission.

[0348] (2) For example, method 2: prioritizing DL reception (HARQ feedback enabled) and / or UL transmission (HARQ mode A) instead of DL reception (HARQ feedback disabled) and / or UL transmission (HARQ mode B).

[0349] For example, according to this disclosure (e.g., the proposed scheme #07), there is an advantage that when the DL / UL conflict handling rules of a half-duplex UE are applied, the degradation of system performance caused by the omission of DL and / or UL transmissions can be mitigated by first protecting the HARQ process, which is relatively susceptible to transmission omissions.

[0350] For example, the proposed solution #07 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0351] For example, the proposed solution #08 can be put forward.

[0352] For example, according to the proposed scheme #08, when the base station (or network) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station and / or UE assume a virtual UL transmission period (hereinafter referred to as the second transmission period) for a (specific) UL transmission period (hereinafter referred to as the first transmission period) with a start time point when the first TA is applied and an end time point when the second TA is applied, and execute DL / UL conflict handling rules based on the second transmission period.

[0353] For example, in the proposed scheme #08 or this disclosure, the first TA and / or the second TA may consist of (common) TA and / or time offset.

[0354] For example, in the proposed scheme #08 or this disclosure, the first TA and / or the second TA can be identified as the same value by the base station and the UE.

[0355] For example, in the proposed scheme #08 or this disclosure, the time offset can be configured / indicated to the UE by the base station (or network).

[0356] For example, in the proposed scheme #08 or this disclosure, when the actual TA (of the UE) is applied to a (specific) UL transmission period, the UE may omit some and / or all UL transmissions outside the second transmission period.

[0357] For example, in the proposed scheme #08 or this disclosure, the second transmission period can be used for time calculations to determine whether to cancel UL transmission and / or to determine the UL transmission period to be canceled.

[0358] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #08 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station, or the UE can determine the conflict as an error condition.

[0359] For example, in the proposed scheme #08 or this disclosure, in the case of an NTN system, the UE can apply a common TA based on the NTN reference point (RP) and / or a UE-specific TA (hereinafter referred to as UE TA) applied autonomously by the UE. For example, in the proposed scheme #08 or this disclosure, the UE TA may correspond to several time slots in an NTN environment with a large RTT, but may have characteristics unknown to the base station (or network). For example, therefore, a difference may arise between the TA value assumed by the base station for the UE and the TA value actually applied by the UE, and the problem of how DL reception periods overlapping with UL transmission periods will be interpreted may arise. For example, in the proposed scheme #08 or this disclosure, this problem may affect not only the DL / UL conflict handling rules, but also the determination / counting performed by the UE for valid UL symbols / time slots. For example, this disclosure may propose a scheme in which, when a base station (or network) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, the base station and / or UE assume a virtual UL transmission period (hereinafter referred to as a second transmission period) for a (specific) UL transmission period (hereinafter referred to as a first transmission period) with a start time point when a first TA is applied and an end time point when a second TA is applied, and execute DL / UL conflict handling rules based on the second transmission period.

[0360] For example, according to this disclosure (e.g., the proposed scheme #08), since the DL / UL conflict handling rules can be executed based on a first TA and / or a second TA with the same understanding between the base station and the UE, it can have the advantage that the mutual understanding of DL / UL conflicts can be consistent and the transmission / reception operations can be clarified.

[0361] For example, in the proposed scheme #08 or this disclosure, when the actual TA (of the UE) is applied to a (specific) UL transmission period, the UE may omit some and / or all UL transmissions outside the second transmission period.

[0362] For example, the proposed solution #08 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0363] For example, the proposed solution #09 can be put forward.

[0364] For example, according to the proposed scheme #09, a scheme can be proposed in which the UE in the non-terrestrial network reports TA information to the base station (or network) in a predictable form and triggers the TA report using the actual TA value and / or (based on the TA report) the previous TA value and / or (based on the TA report) the predicted TA value.

[0365] For example, a UE (in a non-terrestrial network) can report one or more of the following as TA information to the base station (or network), and

[0366] (1) For example, the TA value (at the reference time point) (hereinafter referred to as the first information)

[0367] (2) For example, information used to predict TA (at a future point in time) (e.g., TA drift rate) (hereinafter referred to as second information)

[0368] For example, one or more of the following conditions can be used to trigger a TA report.

[0369] (1) For example, when the difference between the (actual) TA value (at the current time point) and the (TA value based on the first information) at a previous time point is greater than or equal to the first threshold, (2) For example, when the difference between the (actual) TA value (at the current time point) and the (predicted) TA value (at the current time point) (based on the first and / or second information) is greater than or equal to the second threshold, For example, in proposed scheme #09 or this disclosure, the reference time point could be the TA report time point.

[0370] For example, in the proposed scheme #09 or this disclosure, the TA information may include UE-specific TA (e.g., UE-specific TA) information and / or (public) TA information configured / indicated by the base station (or network).

[0371] For example, in the proposed scheme #09 or this disclosure, the validity period of the information used for TA prediction may be limited. For example, the UE may also report a timer value used to guarantee the validity of the information used for TA prediction, and the UE and / or base station (or network) may interpret this as the information used for TA prediction no longer being valid when the timer expires.

[0372] For example, in the proposed scheme #09 or this disclosure, the base station (or network) can configure the UE to apply which of the above schemes to TA information reporting and / or TA reporting triggering conditions.

[0373] For example, in the proposed scheme #09 or this disclosure, the (actual) TA may refer to the TA expected / calculated by the UE.

[0374] For example, in the proposed scheme #09 or this disclosure, the predicted TA value can be calculated based on first information and / or second information and / or (pre-agreed and / or pre-configured) formulas (between the base station and the UE).

[0375] For example, in the proposed scheme #09 or this disclosure, the base station (or network) may configure the first threshold and the second threshold to the same parameters and / or may configure the first threshold and the second threshold independently of each other.

[0376] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #09 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0377] For example, in proposed solution #09 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed solution #09 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed solution #09 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0378] For example, in proposed solution #09 or this disclosure, the function of a UE reporting (UE) TA to a base station (or network) can be supported in a non-terrestrial network. For example, in proposed solution #09 or this disclosure, the (UE) TA reported by the UE can change from its value at the reporting time point based on the relative movement of the UE and / or the satellite. For example, therefore, a scheme can be considered where, when the UE reports TA information, the UE reports the TA value (at a reference time point) and information for predicting the TA (at a future time point) (e.g., TA offset information).

[0379] For example, this disclosure could therefore propose a scheme in which the UE uses TA information to trigger a TA report when the UE reports TA information in a form predictable at a future point in time. For example, the UE could report one or more of the following as TA information to the base station, and

[0380] (1) For example, the TA value (at the reference time point) (hereinafter referred to as the first information)

[0381] (2) For example, information used to predict TA (at a future point in time) (e.g., TA drift rate) (hereinafter referred to as second information)

[0382] For example, the UE may then use one or more of the following conditions to trigger a TA report.

[0383] (1) For example, when the difference between the (actual) TA value (at the current time point) and the (TA value based on the first information) at a previous time point is greater than or equal to the first threshold.

[0384] (2) For example, when the difference between the (actual) TA value (at the current time point) and the (predicted) TA value (at the current time point) (based on the first and / or second information) is greater than or equal to the second threshold.

[0385] For example, when the UE has already reported the second information, the UE can trigger a TA report based on the second condition. For example, conventionally, since the UE executes a TA report when the difference between the TA value reported at a past time point and the current TA is greater than or equal to a certain level, frequent TA reports and signaling loads may occur when the threshold for TA reporting is configured low. For example, conversely, according to the proposed scheme of this disclosure, since a TA report is executed when the difference between the predicted TA value for a future time point and the current TA is greater than or equal to a certain level, the TA reports and signaling load may not be relatively large even when the threshold for TA reporting is configured low. For example, it has the advantage of reducing TA reports and signaling load while improving the accuracy of TA reports.

[0386] For example, according to this disclosure (e.g., the proposed solution #09), there is the advantage of reducing TA reporting and signaling load while improving the accuracy of TA reports.

[0387] For example, the proposed solution #09 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0388] For example, the proposed solution #10 can be put forward.

[0389] For example, according to the proposed scheme #10, a scheme can be proposed in which the UE in the non-terrestrial network reports TA information to the base station (or network) in a predictable form, and uses the actual TA value and / or (based on the TA report) the previous TA value and / or (based on the TA report) the predicted TA value to determine the DL / UL conflicting resources.

[0390] For example, a UE (in a non-terrestrial network) can report one or more of the following as TA information to the base station (or network), and

[0391] (1) For example, the TA value (at the reference time point) (hereinafter referred to as the first information)

[0392] (2) For example, information used to predict TA (at a future point in time) (e.g., TA drift rate) (hereinafter referred to as second information)

[0393] For example, a scheme can be proposed in which the UE uses one or more of the following schemes to determine DL / UL conflicting resources.

[0394] (1) For example, a scheme may be proposed in which overlapping DL / UL resources (in the time domain) (within a specific time interval) are identified as DL / UL conflicting resources when the TA value (at the current time point) is applied.

[0395] (2) For example, a scheme may be proposed in which overlapping DL / UL resources (in the time domain) (within a specific time interval) are identified as DL / UL conflicting resources when the TA value (based on the first information) (at a previous time point) is applied.

[0396] (3) For example, a scheme may be proposed in which, when the predicted TA value is applied (at the current time point) (based on the first information and / or the second information), overlapping DL / UL resources (in the time domain) (within a specific time interval) are identified as DL / UL conflicting resources.

[0397] For example, in proposed scheme #10 or this disclosure, the reference time point could be the TA report time point.

[0398] For example, in the proposed scheme #10 or this disclosure, the TA information may include UE-specific TA (e.g., UE-specific TA) information and / or (public) TA information configured / indicated by the base station (or network).

[0399] For example, in proposed scheme #10 or this disclosure, the validity period of the information used for TA prediction may be limited. For example, the UE may also report a timer value used to guarantee the validity of the information used for TA prediction, and the UE and / or base station (or network) may interpret this as meaning that the information used for TA prediction is no longer valid when the timer expires.

[0400] For example, in the proposed scheme #10 or this disclosure, the base station (or network) can be configured to use which of the above schemes for TA information reporting and / or DL / UL conflict resource determination for the UE.

[0401] For example, in proposed scheme #10 or this disclosure, the DL / UL conflict resource can be used for effective timeslot / symbol counting and / or DM-RS bundled time periods (e.g., TDW) and / or (based on DL / UL conflict) omission of DL reception and / or UL transmission.

[0402] For example, in the proposed scheme #10 or this disclosure, the time gap may be information (pre)agreed and / or (pre)configured between the base station (or network) and the UE.

[0403] For example, in the proposed scheme #10 or this disclosure, the DM-RS bundle may refer to the operation of performing channel estimation using DM-RS resources for repeated transmissions across UL.

[0404] For example, in the proposed scheme #10 or this disclosure, the TDW can refer to a (time) period during which the UE guarantees the phase continuity and / or power consistency of the signal during UL transmission. For example, the base station (or network) and / or UE can configure / agree (nominal) TDW periods for a specific UL transmission, and can interpret the (actual) TDW period based on the time point of an event occurring within that UL transmission. For example, the period from the start time of UL transmission to before the event occurs can be interpreted as the (actual) TDW period, and thereafter, the (actual) TDW period can be (re)started according to the configuration within the remaining (nominal) TDW period.

[0405] For example, in the proposed scheme #10 or this disclosure, the predicted TA value can be calculated based on first information and / or second information and / or (pre-agreed and / or pre-configured) formulas (between the base station and the UE).

[0406] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #10 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0407] For example, in proposed solution #10 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed solution #10 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed solution #10 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0408] For example, in the proposed scheme #10 or this disclosure, due to reasons such as application (UE) TA, there may be situations where the base station (or network) and the UE have different mutual identification of conflicting DL / UL resources in non-terrestrial networks. For example, when determining a UL resource / time slot that conflicts with a specific DL resource / time slot, there may be situations where the location of the UL resource / time slot determined to conflict with the corresponding DL resource / time slot differs from that of the base station (or network) and the UE by several time slots.

[0409] For example, in proposed solution #10 or this disclosure, the function of the UE reporting (UE)TA to the base station (or network) can be supported in a non-terrestrial network. For example, in proposed solution #10 or this disclosure, the (UE)TA reported by the UE can change from its value at the reporting time point based on the relative movement of the UE and / or the satellite. For example, thus, a scheme can be considered in which, when the UE reports TA information, the UE reports the TA value (at a reference time point) and information for predicting the TA (at a future time point) (e.g., TA offset information).

[0410] For example, this disclosure could therefore propose a scheme in which the UE uses TA information to determine DL / UL conflicts when the UE reports TA information in a form predictable at a future point in time. For example, the UE could report one or more of the following as TA information to the base station, and

[0411] (1) For example, the TA value (at the reference time point) (hereinafter referred to as the first information)

[0412] (2) For example, information used to predict TA (at a future point in time) (e.g., TA drift rate) (hereinafter referred to as second information)

[0413] For example, the UE may then use one or more of the following schemes to determine DL / UL conflicting resources.

[0414] (1) For example, a scheme may be proposed in which overlapping DL / UL resources (in the time domain) (within a specific time interval) are identified as DL / UL conflicting resources when the TA value (at the current time point) is applied.

[0415] (2) For example, a scheme may be proposed in which overlapping DL / UL resources (in the time domain) (within a specific time interval) are identified as DL / UL conflicting resources when the TA value (based on the first information) (at a previous time point) is applied.

[0416] (3) For example, a scheme may be proposed in which, when the predicted TA value is applied (at the current time point) (based on the first information and / or the second information), overlapping DL / UL resources (in the time domain) (within a specific time interval) are identified as DL / UL conflicting resources.

[0417] For example, the UE can first determine the resources that overlap in the time domain based on the current TA as DL / UL conflicting resources (hereinafter referred to as the first DL / UL conflicting resources). For example, when the UE has reported second information, the UE can determine the resources that overlap in the time domain when applying the TA as additional DL / UL conflicting resources (hereinafter referred to as the second DL / UL conflicting resources) based on the second information. For example, in the proposed scheme #10 or this disclosure, the UE can use the first and / or second DL / UL conflicting resources for the determination of effective time slot / symbol counting and / or DM-RS bundled time period (e.g., TDW) and / or (based on DL / UL conflict) omitting of DL reception and / or omitting of UL transmission. For example, in the proposed scheme #10 or this disclosure, when the base station and the UE have the same identification, for example, for the determination of effective time slot / symbol counting and / or TDW, the second DL / UL conflicting resource can be used. For example, this has the advantage of supporting correct transmission / reception operations between the base station and the UE.

[0418] For example, according to this disclosure (e.g., the proposed solution #10), it has the advantage of supporting correct transmission / reception operations between the base station and the UE.

[0419] For example, the proposed solution #10 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0420] For example, the proposed solution #11 can be put forward.

[0421] For example, according to the proposed scheme #11, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station (or network node) and / or UE apply different priorities of timing advance (TA) reports based on the trigger type.

[0422] For example, in proposed solution #11 or this disclosure, the DL / UL conflict handling rule may include a priority rule between DL and UL.

[0423] For example, in the proposed scheme #11 or this disclosure, the UE may prioritize UL transmission based on a TA report triggered by a DL / UL conflict event, rather than receiving another (specific) DL.

[0424] For example, in the proposed scheme #11 or this disclosure, the UE may prioritize UL transmission of a TA report triggered by an indication from the base station (or network node) rather than receiving another (specific) DL.

[0425] For example, in the proposed scheme #11 or this disclosure, the base station (or network node) can configure / instruct the UE on DL / UL priority rules for TA reporting according to each trigger type.

[0426] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #11 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0427] For example, in proposed solution #11 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed solution #11 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed solution #11 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0428] For example, in non-terrestrial networks, DL / UL conflict situations (hereinafter referred to as error situations) that are conventionally expected to be avoided by the base station (or network) may occur relatively frequently (e.g., conflicts between dynamically scheduled DL receive resources and dynamically scheduled UL transmit resources and / or conflicts between semi-statically configured DL receive resources and semi-statically configured UL transmit resources), and it may be necessary to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode for such situations.

[0429] For example, in proposed solution #11 or this disclosure, to help the base station identify DL / UL conflict situations at the UE, the UE can trigger a TA report based on a DL / UL conflict event. For example, in proposed solution #11 or this disclosure, a TA report triggered by a DL / UL conflict event can be more important than a regular TA report triggered based on a TA threshold. For example, in proposed solution #11 or this disclosure, for a TA report triggered by a DL / UL conflict event, it may be necessary to apply a higher priority rule than a regular TA report and / or separate DL / UL conflict handling rules. For example, conflict-based TA report transmission can always take precedence over DL reception. For example, therefore, this disclosure can propose a scheme in which, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, the base station (or network node) and / or UE apply different priorities for timing advance (TA) reports based on the trigger type. For example, in proposed solution #11 or this disclosure, the UE can prioritize UL transmission of a TA report triggered by a DL / UL conflict event over another (specific) DL reception. For example, in proposed scheme #11 or this disclosure, the UE may prioritize UL transmission of TA reports triggered by an indication from the base station (or network node) over reception of another (specific) DL. For example, in proposed scheme #11 or this disclosure, the base station (or network node) may configure / instruct the UE on DL / UL priority rules for TA reports per trigger type.

[0430] For example, according to this disclosure (e.g., proposed scheme #11), the base station (or network node) can control the UE to prioritize UE reports related to DL / UL conflict situations rather than other downlink receptions, thereby supporting the base station (or network node) to quickly detect and respond to DL / UL conflict situations.

[0431] For example, the proposed solution #11 can be combined with other proposed solutions within the scope that the operations of this disclosure do not conflict with each other.

[0432] For example, the proposed solution #12 can be put forward.

[0433] For example, according to the proposed scheme #12, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station (or network node) and / or UE prioritize UL transmission for timing advance (TA) reporting and / or DL / UL conflict event reporting based on DL / UL conflict events, rather than another (specific) DL reception.

[0434] For example, in proposed solution #12 or this disclosure, the DL / UL conflict handling rule may include a priority rule between DL and UL.

[0435] For example, in the proposed scheme #12 or this disclosure, the base station (or network node) can configure / instruct the UE on DL / UL priority rules to be applied to timing advance (TA) reporting and / or DL / UL conflict event reporting based on DL / UL conflict events.

[0436] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #12 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0437] For example, in proposed scheme #12 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed scheme #12 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed scheme #12 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0438] For example, in non-terrestrial networks, DL / UL conflict situations (hereinafter referred to as error situations) that are conventionally expected to be avoided by the base station (or network) may occur relatively frequently (e.g., conflicts between dynamically scheduled DL receive resources and dynamically scheduled UL transmit resources and / or conflicts between semi-statically configured DL receive resources and semi-statically configured UL transmit resources), and it may be necessary to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode for such situations.

[0439] For example, in proposed solution #12 or this disclosure, to help the base station identify DL / UL conflict situations at the UE, the UE can perform TA reporting and / or conflict reporting based on DL / UL conflict events. For example, in proposed solution #12 or this disclosure, UE reports related to DL / UL conflicts can have a higher priority than another downlink reception. For example, the transmission of UE reports related to DL / UL conflicts can always take precedence over DL reception. For example, therefore, this disclosure can propose a scheme in which, when the base station (or network node) and / or UE can perform DL / UL conflict handling rules in a non-terrestrial network according to a half-duplex transmission mode, the base station (or network node) and / or UE prioritize UL transmissions for timing advance (TA) reporting and / or DL / UL conflict event reporting based on DL / UL conflict events, rather than another (specific) DL reception. For example, in proposed solution #12 or this disclosure, the base station (or network node) can configure / instruct the UE on DL / UL priority rules to be applied to timing advance (TA) reporting and / or DL / UL conflict event reporting based on DL / UL conflict events.

[0440] For example, according to this disclosure (e.g., proposed solution #12), the base station (or network node) can control the UE to prioritize UE reporting related to DL / UL conflict situations instead of receiving another downlink, thereby supporting the base station (or network node) to quickly detect and respond to DL / UL conflict situations.

[0441] For example, proposed solution #12 can be combined with other proposed solutions to the extent that the operations of this disclosure do not conflict with each other.

[0442] For example, the proposed solution #13 can be put forward.

[0443] For example, according to the proposed scheme #13, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, and the base station (or network node) and / or UE can perform transmission omission for conflicted DL / UL resources, a scheme can be proposed in which the base station (or network node) configures / indicates resource element information for the transmission omission.

[0444] For example, in proposed solution #13 or this disclosure, the DL / UL conflict handling rule may include a priority rule between DL and UL.

[0445] For example, in the proposed scheme #13 or this disclosure, when DL reception and / or UL transmission are omitted due to DL / UL conflict, the base station (or network node) may configure the unit used for the transmission omission as a repeat transmission unit and / or a time slot unit and / or a symbol unit.

[0446] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #13 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0447] For example, in proposed scheme #13 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed scheme #13 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed scheme #13 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0448] For example, in non-terrestrial networks, DL / UL conflict situations (hereinafter referred to as error situations) that are conventionally expected to be avoided by the base station (or network) may occur relatively frequently (e.g., conflicts between dynamically scheduled DL receive resources and dynamically scheduled UL transmit resources and / or conflicts between semi-statically configured DL receive resources and semi-statically configured UL transmit resources), and it may be necessary to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode for such situations.

[0449] For example, in proposed solution #13 or this disclosure, the DL / UL conflict handling rule can be a rule for prioritizing DL or UL transmissions, and can result in the omission of some or all of the DL or UL transmissions. For example, in proposed solution #13 or this disclosure, the base station (or network node) can configure / indicate resource element information for the transmission omission to the UE. For example, when symbol-level TA control and fine-grained DL / UL conflict management are supported in a non-terrestrial network, the base station (or network node) can allow the UE to omit transmissions on a symbol-by-symbol basis. For example, conversely, when only slot-level TA control is possible in a non-terrestrial network, the base station (or network node) may not allow the UE to omit transmissions on a symbol-by-symbol basis, and can be configured to perform transmission omissions on a slot-by-slot basis or on an entire repeat transmission basis.

[0450] For example, according to this disclosure (e.g., the proposed scheme #13), the base station (or network node) can control the UE to execute the transmission of omitted resource elements when a DL / UL conflict occurs, thereby improving the resource utilization efficiency when a DL / UL conflict occurs.

[0451] For example, proposed solution #13 can be combined with other proposed solutions to the extent that the operations of this disclosure do not conflict with each other.

[0452] For example, recently, in the field of mobile communications, non-terrestrial networks (hereinafter referred to as NTNs) using satellites as network nodes have been actively discussed. For example, satellites used in NTN environments can be classified into geostationary orbit (GEO) satellites, medium Earth orbit (MEO) satellites, low Earth orbit (LEO) satellites, etc., according to their orbital altitude and characteristics, and can have characteristics of very high altitude and long propagation delay time compared to terrestrial networks.

[0453] For example, in such an NTN environment, when the UE supports a half-duplex transmission scheme, the UE may not be able to simultaneously perform downlink (DL) reception and uplink (UL) transmission. Therefore, conflicts may occur when the DL reception time and the UL transmission time overlap. For instance, if UL transmission is scheduled at a time when the UE needs to receive important system information (e.g., system information change details) or control signals via DL, problems may arise where system information cannot be received correctly or UL transmission is delayed due to the conflict.

[0454] For example, conventionally, a scheme has been proposed where such DL / UL conflict situations are resolved arbitrarily by the UE or the network, or DL ​​or UL is selectively executed according to some priority rules. However, when NTN-specific limitations (such as high satellite altitude and long propagation delay, and UE-application autonomous timing advance (TA)) are not fully considered, system performance and link reliability may be degraded. Therefore, a technical solution is needed for UEs supporting half-duplex transmission schemes in NTN environments to effectively handle DL / UL conflicts, thereby efficiently performing UL transmission while stably receiving important system information.

[0455] For example, the proposed solution #14 can be put forward.

[0456] For example, according to the proposed scheme #14, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the DL / UL conflict handling rules are applied differently depending on whether system information has been obtained and / or whether the UE is in the time period (or a specific sub-period of the corresponding time period) when the system information is indicated / announced.

[0457] For example, in proposed solution #14 or this disclosure, the DL / UL conflict handling rule may include a priority rule between DL and UL.

[0458] For example, in proposed scheme #14 or this disclosure, the time period for indicating / notifying system information changes can refer to the modification period for indicating SI changes (modifications).

[0459] For example, in proposed solution #14 or this disclosure, (specific) DL reception may take precedence over (specific) UL transmission before system information is obtained. For example, the (specific) DL reception may include a Type0 / 0A-PDCCH Common Search Space (CSS) type.

[0460] For example, in proposed solution #14 or this disclosure, during the period when system information changes are indicated / notified, (specific) DL reception may take precedence over (specific) UL transmission. For example, the (specific) DL reception may include a Type 0 / 0A-PDCCH Common Search Space (CSS) type.

[0461] For example, in proposed solution #14 or this disclosure, outside of the time period for instructing / notifying system information changes, (specific) DL reception may not take precedence over (specific) UL transmission. For example, the (specific) DL reception may include a Type 0 / 0A-PDCCH Common Search Space (CSS) type.

[0462] For example, in proposed scheme #14 or this disclosure, the base station (or network node) may (in advance) agree / configure / indicate to the UE information about a specific sub-period of time regarding the time period for indicative / notifying changes in system information.

[0463] For example, in proposed scheme #14 or this disclosure, the UE can be in the RRC_CONNECTED state. For example, in proposed scheme #14 or this disclosure, when an RRC connection is established between the UE's RRC layer and the base station's RRC layer, the UE can be in the RRC_CONNECTED state; otherwise, it can be in the RRC_IDLE state. For example, in NR, the RRC_INACTIVE state is also defined, and a UE in the RRC_INACTIVE state can release its connection with the base station while maintaining its connection with the core network.

[0464] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #14 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to the DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0465] For example, in proposed solution #14 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed solution #14 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed solution #14 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0466] For example, in non-terrestrial networks, DL / UL conflict situations (hereinafter referred to as error situations) that are conventionally expected to be avoided by the base station (or network) may occur relatively frequently (e.g., conflicts between dynamically scheduled DL receive resources and dynamically scheduled UL transmit resources and / or conflicts between semi-statically configured DL receive resources and semi-statically configured UL transmit resources), and it may be necessary to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode for such situations.

[0467] For example, in proposed scheme #14 or this disclosure, for a specific type of DL reception, the expected time point and / or time period for receiving the corresponding DL reception can be predicted. For example, in the case of system information reception, the UE can prioritize DL reception until the UE acquires the system information at least once. For example, in proposed scheme #14 or this disclosure, after the UE acquires the system information, the UE can only attempt to receive the system information when the system information changes. For example, the UE can attempt to receive the system information during the time period indicated / announced by the base station (or network node) regarding the system information change. For example, therefore, this disclosure can propose a scheme in which, when the base station (or network node) and / or the UE can execute DL / UL conflict handling rules in a non-terrestrial network according to a half-duplex transmission mode, the DL / UL conflict handling rules are applied differently depending on whether system information has been acquired and / or whether the UE is within the time period indicated / announced for the system information change (or a specific sub-time period of the corresponding time period). For example, during the modification period (or its sub-resources) of the expected SI change (modification), reception for Type 0 / 0A-PDCCH CSS can take precedence over UL transmission. For example, a UE may always prioritize receiving all or some of the resources for Type 2-PDCCH CSS over UL. For instance, in this case, the UE can reliably receive SI change (modification) information from the Type 2-PDCCH CSS resources and can maintain a higher priority for Type 0 / 0A-PDCCH CSS than for UL transmission only during the modification period (or its sub-resources) when the SI change (modification) is expected. For instance, outside the modification period (or its sub-resources) when the SI change (modification) is expected, the priority for Type 0 / 0A-PDCCH CSS may be lower (e.g., in the case of a UE that has already acquired system information).

[0468] For example, in proposed scheme #14 or this disclosure, the UE can be in the RRC_CONNECTED state. For example, in proposed scheme #14 or this disclosure, when an RRC connection is established between the UE's RRC layer and the base station's RRC layer, the UE can be in the RRC_CONNECTED state; otherwise, it can be in the RRC_IDLE state. For example, in NR, the RRC_INACTIVE state is also defined, and a UE in the RRC_INACTIVE state can release its connection with the base station while maintaining its connection with the core network.

[0469] For example, there may be a conflict between (semi-statically configured) DL reception and (semi-statically configured) UL transmission.

[0470] For example, in the case of a Rel-19 HD-FDD(e)Redcap UE in RRC-connected mode, when there is a conflict between (semi-static) DL reception and (semi-static) UL transmission, whether to prioritize UL or DL ​​when handling conflicts with Type-0 / 0A / 1 / 2-PDCCH CSS in RRC-connected mode may depend on the UE implementation, but is subject to the constraints in the following notes (e.g., Case 1).

[0471] For example, note: the UE should follow the following existing procedures: For example, if a common search space including pagingSearchSpace, searchSpaceSIB1, and searchSpaceOtherSystemInformation is provided to the RRC-connected UE, the RRC-connected UE should monitor the SI change indication at least once during each modification period at any paging time to monitor paging on the active BWP.

[0472] For example, in the case of a Rel-19 HD-FDD(e)Redcap UE in RRC connection mode, in the case of a conflict between (semi-static) DL reception and (semi-static) UL transmission, for cases different from the first case (e.g., case 2), the default priority rule for the conflict between (semi-static) DL reception and (semi-static) UL transmission in RRC connection mode can be DL priority.

[0473] For example, the network can indicate that for case 2, UL takes precedence over DL.

[0474] For example, this can be signaled via RRC configuration.

[0475] Figure 16 Examples of priority rules related to implementations based on this disclosure are shown. Figure 16 The implementation methods can be combined with various implementation methods of this disclosure.

[0476] For example, priority rules can vary depending on whether or not information related to the public search space is provided to the device. For instance, if no information related to the public search space is provided to the device, a second priority rule can be applied.

[0477] For example, a second priority rule could be to prioritize DL reception over UL transmission. Alternatively, a second priority rule could prioritize DL. Under a second priority rule, the network could indicate that UL takes precedence over DL. This could be signaled via RRC configuration. The second priority rule could differ from the first priority rule. For example, a second priority rule could be a priority rule related to a conflict between (semi-statically configured) DL reception and (semi-statically configured) UL transmission.

[0478] For example, if information related to a public search space is provided to the device, it may be necessary to determine whether the device is in a modified time period. For example, a modified time period may include at least one sub-time period. For example, the at least one sub-time period may be at least one paging opportunity.

[0479] For example, if information related to a public search space is provided to the device, the priority rule can vary depending on whether the device is in a modification period. For example, a modification period may include at least one sub-period. For example, the at least one sub-period may be at least one paging opportunity. For example, if the device is not in a modification period, a second priority rule can be applied.

[0480] For example, a second priority rule could be to prioritize DL reception over UL transmission. Alternatively, a second priority rule could prioritize DL. Under a second priority rule, the network could indicate that UL takes precedence over DL. This could be signaled via RRC configuration. The second priority rule could differ from the first priority rule. For example, a second priority rule could be a priority rule related to a conflict between (semi-statically configured) DL reception and (semi-statically configured) UL transmission.

[0481] For example, if the device is provided with information related to the public search space and the device is in a modification period, the first priority rule can be applied.

[0482] For example, a first priority rule could be that when providing information related to the common search space to the UE, the UE should monitor the SI change indication at least once per modification period at any paging time to monitor paging. For example, a first priority rule could be that if a common search space including pagingSearchSpace, searchSpaceSIB1, and searchSpaceOtherSystemInformation is provided to an RRC-connected UE, the RRC-connected UE should monitor the SI change indication at least once per modification period at any paging time to monitor paging on an active BWP. For example, a first priority rule could be a priority rule related to a conflict between (semi-statically configured) DL reception and (semi-statically configured) UL transmission.

[0483] For example, according to this disclosure (e.g., the proposed scheme #14), the base station (or network node) and / or UE may allow the application of DL / UL priority rules that prioritize the reception of specific types of DL during the expected / predicted transmission period, thereby achieving the effect of reducing the impact on UL transmission while ensuring the reception of important DL reception.

[0484] For example, by prioritizing downlink reception for system information changes during modification periods instead of scheduled uplink transmissions, UEs operating in non-terrestrial network (NTN) environments supporting half-duplex transmission schemes can reliably acquire important system information changes without interruption. For example, this means that even when downlink reception conflicts with uplink transmission, the UE's ability to track and respond to system information changes may not be compromised. For example, as a result, even in NTN environments where there is a high risk of missing necessary system information changes due to satellite altitude, propagation delay, half-duplex constraints, etc., communication continuity and overall link reliability can be improved. For example, through such conflict handling mechanisms, UEs can further improve efficiency and user experience by minimizing additional signaling overhead or the need for retransmissions while maintaining accurate network parameters.

[0485] For example, proposed solution #14 can be combined with other proposed solutions to the extent that the operations of this disclosure do not conflict with each other.

[0486] For example, the proposed solution #15 can be put forward.

[0487] For example, according to the proposed scheme #15, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station (or network node) and / or UE apply DL / UL conflict handling rules differently for (specific DL reception and / or specific UL transmission) based on a specific timer (remaining) value and / or whether the current time is within a specific time period.

[0488] For example, in proposed solution #15 or this disclosure, the DL / UL conflict handling rule may include a priority rule between DL and UL.

[0489] For example, in proposed solution #15 or this disclosure, the start point of the particular timer can be determined based on the time of reception of specific (system) information and / or the indication / configuration value of the base station (or network node). For example, the base station (or network node) can indicate / configure the (start) reference point of the particular timer to the UE.

[0490] For example, in the proposed scheme #15 or this disclosure, the specific timer may refer to a timer related to the effectiveness of uplink synchronization and / or T430 and / or a timer separate from T430.

[0491] For example, in proposed scheme #15 or this disclosure, the specific timer may refer to a timer associated with DRX and / or DTX operations applied by the base station (or network node) and / or UE.

[0492] For example, in proposed solution #15 or this disclosure, the specific time period may include a RAR window and / or contention resolution window applied by the base station (or network node) and / or the UE. For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in proposed solution #15 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to simultaneously perform DL reception and UL transmission, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0493] For example, in proposed solution #15 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed solution #15 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed solution #15 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0494] For example, in non-terrestrial networks, DL / UL conflict situations (hereinafter referred to as error situations) that are conventionally expected to be avoided by the base station (or network) may occur relatively frequently (e.g., conflicts between dynamically scheduled DL receive resources and dynamically scheduled UL transmit resources and / or conflicts between semi-statically configured DL receive resources and semi-statically configured UL transmit resources), and it may be necessary to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode for such situations.

[0495] For example, in proposed scheme #15 or this disclosure, for a specific type of DL reception, the expected reception time point and / or time period corresponding to the DL reception can be predicted. For example, in the case of RAR (Msg2) and contention resolution information (Msg4), reception can be expected in the RAR window and contention resolution window, respectively. For example, thus, the UE can prioritize (specific) DL reception (e.g., Type 1-PDCCH CSS) related to Msg2 instead of UL transmission within the RAR window, and can prioritize (specific) DL reception related to Msg4 instead of UL transmission within the contention resolution window. For example, in the case of SIB19, the UE's reception of SIB19 can be expected based on the value of the uplink synchronization validity timer (hereinafter referred to as T430). For example, when the length of T430 is less than or equal to a certain reference value, the UE can be expected to attempt SIB19 reception, and when the length is greater than or equal to that reference value, the UE can not be expected to attempt SIB19 reception. For example, when the length of T430 is less than or equal to a certain reference value, the UE may prioritize receiving (specific) DL related to SIB19 instead of transmitting UL, and when the length is greater than or equal to the certain reference value, the UE may not prioritize receiving (specific) DL related to SIB19 instead of transmitting UL. For example, in proposed scheme #15 or this disclosure, the reference value may be a value configured to the UE by the base station (or network node). For example, in proposed scheme #15 or this disclosure, T430 is typically activated when the UE receives SIB19, but the base station and the UE may need to have the same identification of the timer value for DL / UL priority determination. For example, when the T430 timer value is used for DL / UL priority determination, the DL / UL priority rule may be applied based on the remaining timer value relative to the (starting) reference point of the timer indicated / configured by the base station (or network node) to the UE. For example, this disclosure may therefore propose a scheme in which, when a base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, the base station (or network node) and / or UE apply DL / UL conflict handling rules differently for (specific DL reception and / or specific UL transmission) based on a specific timer (remaining) value and / or whether the current time is within a specific time period.

[0496] For example, according to this disclosure (e.g., the proposed scheme #15), the base station (or network node) and / or UE may allow the application of DL / UL priority rules that prioritize the reception of specific types of DL during the expected / predicted transmission period, thereby achieving the effect of reducing the impact on UL transmission while ensuring the reception of important DL transmission.

[0497] For example, it has the advantage of ensuring the reception of urgent / important information such as system information and / or PWS even in cases where DL / UL conflicts may occur.

[0498] For example, proposed solution #15 can be combined with other proposed solutions to the extent that the operations of this disclosure do not conflict with each other.

[0499] For example, the proposed solution #16 can be put forward.

[0500] For example, according to the proposed scheme #16, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, a scheme can be proposed in which the base station (or network node) and / or UE prioritize receiving all and / or some Type2-PDCCH CSS resources instead of UL transmission.

[0501] For example, in the proposed scheme #16 or this disclosure, the base station (or network node) can configure / instruct the UE to apply the high-priority (some) Type 2-PDCCH CSS resource information.

[0502] For example, in a non-terrestrial network according to an embodiment of this disclosure, it can be assumed that the base station (or network) serves a UE operating in half-duplex transmission mode based on the non-terrestrial network. For example, in the proposed scheme #16 or this disclosure, when the UE operates in half-duplex transmission mode, the UE may not be able to perform DL reception and UL transmission simultaneously, and when the DL reception time point and the UL transmission time point conflict, the UE can prioritize performing DL reception and / or UL transmission according to DL / UL conflict handling rules pre-agreed / pre-configured with the base station.

[0503] For example, in proposed solution #16 or this disclosure, in the uplink of a non-terrestrial network, the UE can apply a (common) timing advance (TA) to compensate for the time delay between the feeder-link and the satellite, and a (UE) TA to compensate for the time delay between the UE and the satellite. For example, in proposed solution #16 or this disclosure, the (common) TA is a value mutually identified by parameters and formulas shared between the base station (or network) and the UE, and the (UE) TA can be a value autonomously adjusted by the UE and unknown to the base station (or network). For example, in proposed solution #16 or this disclosure, the TA expected / predicted by the base station (or network) for the UE (first TA) and the TA actually applied by the UE (second TA) can have different values.

[0504] For example, in non-terrestrial networks, DL / UL conflict situations (hereinafter referred to as error situations) that are conventionally expected to be avoided by the base station (or network) may occur relatively frequently (e.g., conflicts between dynamically scheduled DL receive resources and dynamically scheduled UL transmit resources and / or conflicts between semi-statically configured DL receive resources and semi-statically configured UL transmit resources), and it may be necessary to define DL / UL conflict handling rules for UEs operating in half-duplex transmission mode for such situations.

[0505] For example, in proposed solution #16 or this disclosure, Type 2-PDCCH CSS can be a resource for delivering information on whether system information has changed and / or urgent and important information such as Public Warning Systems (PWS). Therefore, this disclosure can propose a scheme in which, when the base station (or network node) and / or UE can execute DL / UL conflict handling rules in a half-duplex transmission mode in a non-terrestrial network, the base station (or network node) and / or UE prioritize receiving all and / or some of the Type 2-PDCCH CSS resources instead of transmitting UL. For example, in proposed solution #16 or this disclosure, the base station (or network node) can configure / instruct the UE to apply this high-priority (some) Type 2-PDCCH CSS resource information.

[0506] For example, according to this disclosure (e.g., proposed solution #16), there is an advantage that the base station (or network node) and / or UE can guarantee the reception of urgent / important information such as system information and / or PWS, even in the event of a possible DL / UL conflict.

[0507] For example, proposed solution #16 can be combined with other proposed solutions to the extent that the operations of this disclosure do not conflict with each other.

[0508] Figure 17 A method for performing wireless communication by a device based on an embodiment of the present disclosure is shown. Figure 17 The implementation methods can be combined with various implementation methods of this disclosure.

[0509] Reference Figure 17 In step S1710, the device can obtain information related to the common search space. In step S1720, the device can monitor system information change indications during the modification period. For example, based on providing the device with information related to the common search space, and based on the conflict between downlink reception and uplink transmission related to system information change indications during the modification period, downlink reception can be monitored preferentially during the modification period.

[0510] For example, based on providing the device with information related to the public search space, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be prioritized during the modification period.

[0511] For example, the device can obtain information related to at least one paging opportunity associated with the modification period. For example, based on providing the device with information related to the common search space, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception during at least one paging opportunity can be prioritized during the modification period.

[0512] For example, the device can establish a radio resource control connection with a base station. For example, based on the device being in a radio resource control connection state related to the establishment of a radio resource control connection, based on providing the device with information related to the common search space, and based on the downlink reception related to system information change indication conflicting with uplink transmission during the modification period, downlink reception can be monitored preferentially during the modification period.

[0513] For example, the priority rules for conflicts between downlink reception and uplink transmission during the modification period related to system information change indications can be different from the priority rules for conflicts between downlink reception and uplink transmission outside the modification period.

[0514] For example, based on providing the device with information related to the public search space, and based on the conflict between downlink reception and uplink transmission during the modification period related to the system information change indication, downlink reception can be monitored at least once during the modification period with priority.

[0515] For example, a conflict between downlink reception and uplink transmission could be a conflict between a semi-statically configured downlink reception and a semi-statically configured uplink transmission.

[0516] For example, the device can be a half-duplex device for non-terrestrial networks. For example, based on the fact that the device is a half-duplex device for non-terrestrial networks, and based on providing the device with information related to the public search space, downlink reception monitoring can be prioritized during the modification period.

[0517] For example, based on providing the device with information related to the common search space of the Type 0-physical downlink control channel, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be monitored preferentially during the modification period.

[0518] For example, based on providing the device with information related to the common search space of the Type 0A-Physical Downlink Control Channel, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be monitored with priority during the modification period.

[0519] For example, based on providing the device with information related to the common search space of the Type 2-Physical Downlink Control Channel, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be monitored preferentially during the modification period.

[0520] For example, if an uplink transmission conflict occurs based on at least one of a downlink reception outside the modification period and a report regarding information related to timing advance, or a scheduling request for such a report, the uplink transmission may be prioritized. For example, the report regarding timing advance may include at least one of a report related to radio resource control, a report related to handover, or a report related to timing advance triggered by a conflict. For example, a report regarding timing advance related to radio resource control may include a report related to at least one of radio resource control establishment, radio resource control recovery, or radio resource control reconstruction. For example, a report related to timing advance triggered by a conflict may include a report of timing advance triggered by a conflict between the downlink and uplink.

[0521] For example, the device can report at least one of information related to a first timing advance or information used to predict a second timing advance. For example, based on a third timing advance related to an actual timing advance and at least one of the first timing advance or information used to predict a second timing advance, the device can trigger a report of a third timing advance. For example, based on a third timing advance related to an actual timing advance and at least one of the first timing advance or information used to predict a second timing advance, the device can determine a conflict between a downlink and an uplink.

[0522] The proposed method can be applied to an apparatus based on various embodiments of this disclosure. First, the processor 102 of apparatus 100 can obtain information related to the common search space. For example, the processor 102 of apparatus 100 can also monitor system information change indications during modification periods. For instance, based on providing the apparatus with information related to the common search space, and based on downlink reception conflicting with uplink transmissions during modification periods related to system information change indications, downlink reception monitoring can be prioritized during modification periods.

[0523] Based on embodiments of this disclosure, an apparatus can be provided. For example, the apparatus may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the apparatus to perform operations including: obtaining information related to a common search space; and monitoring system information change indications during a modification period. For example, based on providing the apparatus with information related to the common search space, and based on downlink reception conflicting with uplink transmissions related to system information change indications during a modification period, downlink reception monitoring can be prioritized during the modification period.

[0524] Based on embodiments of this disclosure, a processing apparatus suitable for a control device can be provided. For example, the processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the device to perform operations including: obtaining information related to a common search space; and monitoring system information change indications during a modification period. For example, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmissions related to system information change indications during a modification period, downlink reception monitoring can be prioritized during the modification period.

[0525] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium for storing instructions can be provided. For example, when executed, the instructions can cause the device to perform operations including: obtaining information related to a common search space; and monitoring system information change indications during a modification period. For example, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmissions during a modification period related to system information change indications, downlink reception monitoring can be prioritized during the modification period.

[0526] Figure 18 A method for performing wireless communication by a base station based on an embodiment of the present disclosure is shown. Figure 18 The implementation methods can be combined with various implementation methods of this disclosure.

[0527] Reference Figure 18 In step S1810, the base station may transmit information related to the common search space. In step S1820, the base station may transmit a system information change indication during the modification period. For example, based on providing the device with information related to the common search space, and based on the conflict between downlink reception and uplink transmission related to the system information change indication during the modification period, downlink reception monitoring may be prioritized during the modification period.

[0528] For example, based on providing the device with information related to the public search space, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be prioritized during the modification period.

[0529] For example, a base station may transmit information related to at least one paging timing associated with a modified time period. For example, based on providing the device with information related to the common search space, and based on the conflict between downlink reception and uplink transmission related to system information change indication during the modified time period, downlink reception during at least one paging timing may be prioritized during the modified time period.

[0530] For example, a base station can establish a radio resource control connection with a device. For example, based on the device being in a radio resource control connection state related to the establishment of a radio resource control connection, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmission during the modification period related to system information change indication, downlink reception can be monitored preferentially during the modification period.

[0531] For example, the priority rules for conflicts between downlink reception and uplink transmission during the modification period related to system information change indications can be different from the priority rules for conflicts between downlink reception and uplink transmission outside the modification period.

[0532] For example, based on providing the device with information related to the public search space, and based on the conflict between downlink reception and uplink transmission during the modification period related to the system information change indication, downlink reception can be monitored at least once during the modification period with priority.

[0533] For example, a conflict between downlink reception and uplink transmission could be a conflict between a semi-statically configured downlink reception and a semi-statically configured uplink transmission.

[0534] For example, the device can be a half-duplex device for non-terrestrial networks. For example, based on the fact that the device is a half-duplex device for non-terrestrial networks, and based on providing the device with information related to the public search space, downlink reception monitoring can be prioritized during the modification period.

[0535] For example, based on providing the device with information related to the common search space of the Type 0-physical downlink control channel, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be monitored preferentially during the modification period.

[0536] For example, based on providing the device with information related to the common search space of the Type 0A-Physical Downlink Control Channel, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be monitored with priority during the modification period.

[0537] For example, based on providing the device with information related to the common search space of the Type 2-Physical Downlink Control Channel, and based on the conflict between downlink reception and uplink transmission during the modification period related to system information change indication, downlink reception can be monitored preferentially during the modification period.

[0538] For example, if an uplink transmission conflict occurs based on at least one of a downlink reception outside the modification period and a report regarding information related to timing advance, or a scheduling request for such a report, the uplink transmission may be prioritized. For example, the report regarding timing advance may include at least one of a report related to radio resource control, a report related to handover, or a report related to timing advance triggered by a conflict. For example, a report regarding timing advance related to radio resource control may include a report related to at least one of radio resource control establishment, radio resource control recovery, or radio resource control reconstruction. For example, a report related to timing advance triggered by a conflict may include a report of timing advance triggered by a conflict between the downlink and uplink.

[0539] For example, the base station can receive at least one of information related to a first timing advance or information used to predict a second timing advance. For example, a report of a third timing advance can be triggered based on at least one of a third timing advance related to the actual timing advance and the first timing advance or information used to predict the second timing advance. For example, a conflict between the downlink and uplink can be determined based on at least one of a third timing advance related to the actual timing advance and the first timing advance or information used to predict the second timing advance.

[0540] The proposed method can be applied to an apparatus based on various embodiments of this disclosure. First, the processor 202 of the base station 200 can control the transceiver 206 to transmit information related to the common search space. For example, the processor 202 of the base station 200 can also control the transceiver 206 to transmit a system information change indication during a modification period. For example, based on providing the apparatus with information related to the common search space, and based on the conflict between downlink reception and uplink transmission related to the system information change indication during the modification period, downlink reception can be prioritized during the modification period.

[0541] Based on embodiments of this disclosure, a base station can be provided. For example, the base station may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the base station to perform operations including: transmitting information related to a common search space; and transmitting a system information change indication during a modification period. For example, based on providing the device with information related to the common search space, and based on downlink reception conflicting with uplink transmission during the modification period related to the system information change indication, downlink reception can be prioritized during the modification period.

[0542] Based on embodiments of this disclosure, a processing apparatus suitable for controlling a base station can be provided. For example, the processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, instructions, based on execution by the at least one processor, can cause the base station to perform operations including: transmitting information related to a common search space; and transmitting a system information change indication during a modification period. For example, based on providing the apparatus with information related to the common search space, and based on downlink reception conflicting with uplink transmission during the modification period related to the system information change indication, downlink reception monitoring can be prioritized during the modification period.

[0543] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium for storing instructions can be provided. For example, when executed, the instructions can cause a base station to perform operations including: transmitting information related to a common search space; and transmitting a system information change indication during a modification period. For example, based on providing the device with information related to the common search space, and based on the conflict between downlink reception and uplink transmission related to the system information change indication during the modification period, downlink reception can be prioritized during the modification period.

[0544] The various embodiments disclosed herein can be combined with each other.

[0545] The proposed method can be applied to the apparatus described below. First, the processor 202 of the receiving UE can be configured with at least one bandwidth portion (BWP). Then, the processor 202 of the receiving UE can control the transceiver 206 of the receiving UE to receive, on the at least one BWP, the physical channel associated with inter-UE communication (e.g., SL communication) and / or the reference signal associated with inter-UE communication (e.g., SL communication) from the transmitting UE.

[0546] The following will describe devices to which various embodiments of the present disclosure may be applied.

[0547] The various descriptions, functions, processes, proposals, methods and / or operating procedures described in this document can be applied to, but are not limited to, various fields requiring wireless communication / connectivity between devices (e.g., 5G).

[0548] The following description will be given in more detail with reference to the accompanying drawings. In the following drawings / description, unless otherwise described, the same reference numerals may denote the same or corresponding hardware blocks, software blocks, or functional blocks.

[0549] Figure 19 A communication system 1 based on an embodiment of the present disclosure is shown. Figure 19 The implementation methods can be combined with various implementation methods of this disclosure.

[0550] Reference Figure 19The communication system 1, which applies various embodiments of this disclosure, includes wireless devices, base stations (BS), and networks. Herein, a wireless device refers to a device that performs communication using radio access technology (RAT) (e.g., 5G New Radio (NR) or Long Term Evolution (LTE)) and may be referred to as a communication / radio / 5G device. Wireless devices may include, but are not limited to, robots 100a, vehicles 100b-1 and 100b-2, extended reality (XR) devices 100c, handheld devices 100d, home appliances 100e, Internet of Things (IoT) devices 100f, and artificial intelligence (AI) devices / servers 400. For example, a vehicle may include a vehicle with wireless communication capabilities, an autonomous vehicle, and a vehicle capable of performing vehicle-to-vehicle communication. Herein, a vehicle may include unmanned aerial vehicles (UAVs) (e.g., drones) and / or aircraft (AVs) (e.g., advanced air traffic (AAM)). XR devices can include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices, and can take the form of head-up displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Handheld devices can include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses) and computers (e.g., laptops). Home appliances can include TVs, refrigerators, and washing machines. IoT devices can include sensors and smart meters. For example, the BS and network can be implemented as wireless devices, and a particular wireless device 200a can operate as a BS / network node relative to other wireless devices.

[0551] Here, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may include narrowband Internet of Things (IoT) for low-power communication, in addition to LTE, NR, and 6G. In this case, for example, NB-IoT technology may be an example of low-power wide-area network (LPWAN) technology and may be implemented as a standard such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the aforementioned names. Additionally or alternatively, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN and may be referred to by various names including enhanced machine-type communication (eMTC). For example, LTE-M technology may be implemented as at least one of various standards such as 1) LTE Cat 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine-type communication, and / or 7) LTE M, and is not limited to the aforementioned names. Additionally or alternatively, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may include at least one of Bluetooth, Low Power Wide Area Network (LPWAN), and ZigBee, which takes into account low power communication, and are not limited to the aforementioned names. As an example, ZigBee technology may generate personal area networks (PANs) related to small / low power digital communication based on various standards including IEEE 802.15.4, and may be referred to by various names.

[0552] Wireless devices 100a to 100f can connect to network 300 via BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to AI server 400 via network 300. Network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via BS 200 / network 300, wireless devices 100a to 100f can perform direct communication with each other (e.g., sidelink communication) without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0553] Wireless communication / connections 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS 200, or between BS 200 / BS 200. In this document, wireless communication / connections can be established via various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication 150c (e.g., relay, access backhaul integration (IAB)). Wireless devices and BS / wireless devices can transmit / receive radio signals to / from each other via wireless communication / connections 150a, 150b, and 150c. For example, wireless communication / connections 150a and 150b can transmit / receive signals via various physical channels. For this purpose, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this disclosure.

[0554] Figure 20 A wireless device based on an embodiment of the present disclosure is shown. Figure 20 The implementation methods can be combined with various implementation methods of this disclosure.

[0555] Reference Figure 20 The first wireless device 100 and the second wireless device 200 can transmit and receive radio signals via various RATs (e.g., LTE and NR). In this document, {first wireless device 100 and second wireless device 200} can correspond to... Figure 19 The {Wireless Device 100x and BS 200} and / or {Wireless Device 100x and Wireless Device 100x}.

[0556] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and / or one or more antennas 108. The processors 102 may control the memories 104 and / or the transceivers 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed herein. For example, the processors 102 may process information in the memories 104 to generate a first information / signal, and then transmit a radio signal including the first information / signal via the transceivers 106. The processors 102 may receive a radio signal including a second information / signal via the transceivers 106, and then store the information obtained by processing the second information / signal in the memories 104. One or more memories 104 may be connected to one or more processors 102 and may store various information related to the operation of one or more processors 102. For example, one or more memories 104 may store software code including instructions for performing part or all of the processing controlled by one or more processors 102 or for performing the descriptions, functions, processes, proposals, methods and / or operation flowcharts disclosed herein. In this document, one or more processors 102 and one or more memories 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). One or more transceivers 106 may be connected to one or more processors 102 and transmit and / or receive radio signals via one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. One or more transceivers 106 may be used interchangeably with radio frequency (RF) units. In this disclosure, a wireless device may represent a communication modem / circuit / chip.

[0557] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally include one or more transceivers 206 and / or one or more antennas 208. The processors 202 may control the memories 204 and / or the transceivers 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processors 202 may process information in the memories 204 to generate a third message / signal, and then transmit a radio signal including the third message / signal via the transceivers 206. The processors 202 may receive a radio signal including a fourth message / signal via the transceivers 206, and then store the information obtained by processing the fourth message / signal in the memories 204. One or more memories 204 may be connected to one or more processors 202 and may store various information related to the operation of one or more processors 202. For example, one or more memories 204 may store software code including instructions for performing part or all of the processing controlled by one or more processors 202 or for performing the descriptions, functions, processes, proposals, methods and / or operation flowcharts disclosed in this document. In this document, one or more processors 202 and one or more memories 204 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). One or more transceivers 206 may be connected to one or more processors 202 and transmit and / or receive radio signals via one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. One or more transceivers 206 may be used interchangeably with RF units. In this disclosure, a wireless device may represent a communication modem / circuit / chip.

[0558] The hardware elements of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information, according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206, and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document.

[0559] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field-programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and such firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be included in one or more processors 102 and 202, or stored in one or more memories 104 and 204 to be driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document can be implemented in firmware or software in the form of code, commands, and / or command sets.

[0560] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 may be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, registers, cache memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 may be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0561] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels disclosed in the methods and / or operation flowcharts of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels disclosed in the descriptions, functions, processes, proposals, methods, and / or operation flowcharts of this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and transmit and receive radio signals. For example, one or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels disclosed in the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc., from RF band signals to baseband signals for processing by one or more processors 102 and 202. One or more transceivers 106 and 206 may convert the processed user data, control information, radio signals / channels, etc., from baseband signals to RF band signals using one or more processors 102 and 202. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0562] Figure 21 A signal processing circuit for transmitting signals based on an embodiment of the present disclosure is shown. Figure 21 The implementation methods can be combined with various implementation methods of this disclosure.

[0563] Reference Figure 21 The signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a pre-encoder 1040, a resource mapper 1050, and a signal generator 1060. It can perform... Figure 21 Operations / functions, but not limited to Figure 20Processors 102 and 202 and / or transceivers 106 and 206. Figure 21 The hardware components can be used Figure 20 The processors 102 and 202 and / or transceivers 106 and 206 are used for implementation. For example, boxes 1010 to 1060 can be implemented using... Figure 20 Processors 102 and 202 are used for implementation. Alternatively, blocks 1010 to 1050 can be implemented using... Figure 20 The processors 102 and 202 are used to implement this, and the box 1060 can be implemented through... Figure 20 This is achieved using transceivers 106 and 206.

[0564] Typing can be done through Figure 21 The signal processing circuit 1000 converts the signal into a radio signal. In this document, a codeword is a sequence of encoded bits for an information block. An information block may include a transport block (e.g., a UL-SCH transport block, a DL-SCH transport block). Radio signals can be transmitted through various physical channels (e.g., PUSCH and PDSCH).

[0565] Specifically, the codeword can be converted into a scrambled bit sequence by scrambler 1010. The scrambling sequence used for scrambling can be generated based on an initialization value, which may include the ID information of the wireless device. The scrambling bit sequence can be modulated into a modulation symbol sequence by modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by layer mapper 1030. The modulation symbols of each transmission layer can be mapped (pre-encoded) to the corresponding antenna port by pre-encoder 1040. The output z of pre-encoder 1040 can be obtained by combining the output y of layer mapper 1030 with N. The M precoding matrix W is obtained by multiplying the M precoding matrix. In this paper, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) on the complex modulation symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0566] Resource mapper 1050 maps modulation symbols for each antenna port to time-frequency resources. Time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. Signal generator 1060 can generate radio signals from the mapped modulation symbols, and the generated radio signals can be transmitted to other devices via each antenna. For this purpose, signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and a frequency up-converter.

[0567] The signal processing procedure used for signals received in a wireless device can be compared with... Figure 21 The signal processing procedures 1010 to 1060 are configured in the reverse manner. For example, wireless devices (e.g., Figure 20 The receiver (100 and 200) can receive radio signals from the outside via the antenna port / transceiver. The received radio signals can be converted into baseband signals by a signal restorer. For this purpose, the signal restorer may include a frequency down-converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Next, the baseband signal can be recovered into codewords through a resource demapping process, a post-encoding process, a demodulation process, and a descrambling process. The codewords can be recovered into the original information blocks through decoding. Therefore, the signal processing circuitry (not illustrated) for receiving signals may include a signal restorer, a resource demapping unit, a post-encoder, a demodulator, a descrambler, and a decoder.

[0568] Figure 22 A wireless device based on an embodiment of this disclosure is shown. The wireless device can be implemented in various forms depending on the use case / service (see reference). Figure 19 ). Figure 22 The implementation methods can be combined with various implementation methods of this disclosure.

[0569] Reference Figure 22 Wireless devices 100 and 200 can correspond to Figure 20 The wireless devices 100 and 200 can be configured using various elements, components, units / parts, and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a storage unit 130, and an additional component 140. The communication unit may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include... Figure 20 One or more processors 102 and 202 and / or one or more memories 104 and 204. For example, transceiver 114 may include Figure 20 The device comprises one or more transceivers 106 and 206 and / or one or more antennas 108 and 208. The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the add-on components 140, and controls the overall operation of the wireless device. For example, the control unit 120 may control the electrical / mechanical operation of the wireless device based on programs / code / commands / information stored in the memory unit 130. The control unit 120 may transmit information stored in the memory unit 130 to an external source (e.g., another communication device) via the communication unit 110 through a wireless / wired interface, or store information received from an external source (e.g., another communication device) via the communication unit 110 through a wireless / wired interface in the memory unit 130.

[0570] The add-on component 140 can be configured differently depending on the type of wireless device. For example, the add-on component 140 may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in, but is not limited to, the following forms: robot ( Figure 19 100a), vehicles ( Figure 19 100b-1 and 100b-2), XR device ( Figure 19 100c), handheld device ( Figure 19 100d), home appliances ( Figure 19 100e), IoT devices ( Figure 19 100f), digital broadcasting terminals, holographic devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices ( Figure 19 400), BS ( Figure 19 (e.g., 200), network nodes, etc. Depending on the use case / service, wireless devices can be used in mobile or fixed locations.

[0571] exist Figure 22 In both wireless devices 100 and 200, all elements, components, units / parts, and / or modules can be connected to each other via wired interfaces, or at least a portion thereof can be wirelessly connected via communication unit 110. For example, in each of wireless devices 100 and 200, control unit 120 and communication unit 110 can be wired connected, and control unit 120 and first units (e.g., 130 and 140) can be wirelessly connected via communication unit 110. Each element, component, unit / part, and / or module within wireless devices 100 and 200 may also include one or more elements. For example, control unit 120 may be configured by a collection of one or more processors. As an example, control unit 120 may be configured by a collection of communication control processors, application processors, electronic control units (ECUs), graphics processing units, and memory control processors. As another example, memory 130 may be configured by random access memory (RAM), dynamic RAM (DRAM), read-only memory (ROM), flash memory, volatile memory, non-volatile memory, and / or combinations thereof.

[0572] The implementation will be described in detail below with reference to the accompanying drawings. Figure 22 Examples.

[0573] Figure 23A handheld device based on an embodiment of the present disclosure is illustrated. The handheld device may include a smartphone, smart tablet, wearable device (e.g., a smartwatch or smart glasses), or portable computer (e.g., a laptop). The handheld device may be referred to as a mobile station (MS), user terminal (UT), mobile subscriber station (MSS), subscriber station (SS), advanced mobile station (AMS), or wireless terminal (WT). Figure 23 The implementation methods can be combined with various implementation methods of this disclosure.

[0574] Reference Figure 23 The handheld device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a storage unit 130, a power supply unit 140a, an interface unit 140b, and an I / O unit 140c. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 to 130 / 140a to 140c respectively correspond to... Figure 22 The frame is 110 to 130 / 140.

[0575] Communication unit 110 can send and receive signals (e.g., data and control signals) to and from other wireless devices or BSs. Control unit 120 can perform various operations by controlling the components of handheld device 100. Control unit 120 may include an application processor (AP). Storage unit 130 can store data / parameters / programs / codes / commands required to drive handheld device 100. Storage unit 130 can store input / output data / information. Power supply unit 140a can supply power to handheld device 100 and includes wired / wireless charging circuitry, battery, etc. Interface unit 140b can support connection of handheld device 100 to other external devices. Interface unit 140b may include various ports for connection to external devices (e.g., audio I / O ports and video I / O ports). I / O unit 140c can input or output video information / signals, audio information / signals, data and / or user-input information. I / O unit 140c may include a camera, microphone, user input unit, display unit 140d, speaker and / or haptic module.

[0576] As an example, in the case of data communication, I / O unit 140c can acquire user input information / signals (e.g., touch, text, voice, image, or video), and the acquired information / signals can be stored in storage unit 130. Communication unit 110 can convert the information / signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. Communication unit 110 can receive radio signals from other wireless devices or the BS, and then recover the received radio signals into the original information / signals. The recovered information / signals can be stored in storage unit 130 and can be output in various types (e.g., text, voice, image, video, or haptic) through I / O unit 140c.

[0577] Figure 24 The illustration shows a vehicle or autonomous vehicle based on an embodiment of this disclosure. The vehicle or autonomous vehicle can be implemented as a mobile robot, automobile, train, manned / unmanned aerial vehicle (AV), ship, etc. Figure 24 The implementation methods can be combined with various implementation methods of this disclosure.

[0578] Reference Figure 24 The vehicle or autonomous vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to... Figure 22 The frame size is 110 / 130 / 140.

[0579] Communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. Control unit 120 can perform various operations by controlling the components of the vehicle or autonomous vehicle 100. Control unit 120 may include an electronic control unit (ECU). Drive unit 140a enables the vehicle or autonomous vehicle 100 to move on the road. Drive unit 140a may include an engine, motor, powertrain, wheels, brakes, steering system, etc. Power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuitry, battery, etc. Sensor unit 140c can acquire vehicle status, surrounding environment information, user information, etc. Sensor unit 140c may include inertial measurement unit (IMU) sensors, collision sensors, wheel sensors, speed sensors, slope sensors, weight sensors, heading sensors, position modules, vehicle forward / reverse sensors, battery sensors, fuel sensors, tire sensors, steering sensors, temperature sensors, humidity sensors, ultrasonic sensors, lighting sensors, pedal position sensors, etc. Autonomous driving unit 140d can implement technologies for maintaining the vehicle's lane, technologies for automatically adjusting speed (e.g., adaptive cruise control), technologies for autonomous driving along a defined path, and technologies for driving by automatically setting a route when a destination is set, etc.

[0580] For example, communication unit 110 can receive map data, traffic information data, etc., from an external server. Autonomous driving unit 140d can generate autonomous driving paths and driving plans from the acquired data. Control unit 120 can control drive unit 140a, enabling the vehicle or autonomous vehicle 100 to move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, communication unit 110 can periodically or non-periodically acquire the latest traffic information data from an external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, sensor unit 140c can acquire vehicle status and / or surrounding environment information. Autonomous driving unit 140d can update the autonomous driving path and driving plan based on newly acquired data / information. Communication unit 110 can transmit information about vehicle location, autonomous driving path, and / or driving plan to an external server. The external server can use AI technology, etc., to predict traffic information data based on information collected from the vehicle or autonomous vehicle and provide the predicted traffic information data to the vehicle or autonomous vehicle.

[0581] The claims in this specification can be combined in various ways. For example, technical features in the method claims can be combined to implement or perform in a device, and technical features in the device claims can be combined to implement or perform in a method. Additionally, technical features in one or more method claims and one or more device claims can be combined to implement or perform in a device.

Claims

1. A method comprising the following steps: Obtain information related to the public search space; as well as Monitor system information changes during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

2. The method according to claim 1, in, Based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period in relation to the system information change indication, the downlink reception is given priority during the modification period.

3. The method according to claim 1, wherein, The steps for monitoring the system information change indication during the modification period include the following steps: Obtain information regarding at least one paging timing related to the modified time period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception related to the system information change indication conflicting with the uplink transmission during the modification period, the downlink reception during the at least one paging opportunity is given priority during the modification period.

4. The method according to claim 1, further comprising the following steps: Establish a radio resource control connection with the base station. Specifically, based on the device being in the radio resource control connection state related to the establishment of the radio resource control connection, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission in the modified period related to the system information change indication, the monitoring of the downlink reception is given priority in the modified period.

5. The method according to claim 1, in, The priority rules for conflicts between downlink reception and uplink transmission during the modification period related to the system information change indication are different from the priority rules for conflicts between downlink reception and uplink transmission outside the modification period.

6. The method according to claim 1, in, Based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period in relation to the system information change indication, the monitoring of the downlink reception is prioritized at least once during the modification period.

7. The method according to claim 1, in, The conflict between the downlink reception and the uplink transmission is a conflict between a semi-statically configured downlink reception and a semi-statically configured uplink transmission.

8. The method according to claim 1, in, The device is a half-duplex device for non-terrestrial networks, and Wherein, based on the fact that the device is a half-duplex device for the non-terrestrial network, based on providing the device with the information related to the public search space, the monitoring of the downlink reception is prioritized during the modification period.

9. The method according to claim 1, in, Based on providing the device with information about the common search space related to the Type 0-physical downlink control channel common search space, and based on the downlink reception conflicting with the uplink transmission during the modification period in relation to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

10. The method according to claim 1, in, Based on providing the device with information about the common search space related to the Type 0A-Physical Downlink Control Channel common search space, and based on the downlink reception conflicting with the uplink transmission during the modification period in relation to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

11. The method according to claim 1, in, Based on providing the device with information about the common search space related to the Type 2-Physical Downlink Control Channel common search space, and based on the downlink reception conflicting with the uplink transmission during the modification period in relation to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

12. The method according to claim 5, in, If an uplink transmission conflict occurs between a downlink reception outside the modified time period and an uplink transmission conflict between a report about information related to timing advance or a scheduling request for a report about information related to timing advance, the uplink transmission shall be prioritized. The report relating to the timing advance includes at least one of the following: a report on timing advance related to radio resource control, a report on timing advance related to handover, or a report on timing advance due to triggering. The report regarding the timing advance information related to the radio resource control includes a report regarding timing advance information related to at least one of radio resource control establishment, radio resource control restoration, or radio resource control reconstruction; and The report relating to the information caused by the timing advance includes a report relating to the timing advance caused by the timing advance based on the conflict between the downlink and uplink.

13. The method according to claim 1, further comprising the following steps: The report shall include at least one of information relating to the first timing advance or information used to predict the second timing advance; as well as The report of the third timing advance is triggered based on at least one of the third timing advance related to the actual timing advance and the first timing advance or the information used to predict the second timing advance; or A conflict between the downlink and uplink is determined based on at least one of the third timing advance related to the actual timing advance and the first timing advance or the information used to predict the second timing advance.

14. An apparatus comprising: At least one transceiver; At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, based on execution by the at least one processor, cause the device to perform operations, the operations including: Obtain information related to the public search space; and Monitor system information changes during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

15. A processing apparatus suitable for a control device, the processing apparatus comprising: At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, based on execution by the at least one processor, cause the device to perform operations, the operations including: Obtain information related to the public search space; and Monitor system information changes during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

16. A non-transitory computer-readable storage medium storing instructions that, upon execution, cause a device to perform operations, the operations including: Obtain information related to the public search space; as well as Monitor system information changes during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

17. A method comprising the steps of: Send information related to the public search space; as well as Send system information change instructions during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

18. A base station, the base station comprising: At least one transceiver; At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, based on execution by the at least one processor, cause the base station to perform operations, the operations including: Send information related to the public search space; and Send system information change instructions during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

19. A processing apparatus suitable for controlling a base station, the processing apparatus comprising: At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, based on execution by the at least one processor, cause the base station to perform operations, the operations including: Send information related to the public search space; and Send system information change instructions during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

20. A non-transitory computer-readable storage medium storing instructions that, upon execution, cause a base station to perform an operation, the operation comprising: Send information related to the public search space; as well as Send system information change instructions during the modification period. Specifically, based on providing the device with the information related to the public search space, and based on the downlink reception conflicting with the uplink transmission during the modification period related to the system information change indication, the monitoring of the downlink reception is prioritized during the modification period.

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