Method and device for performing communication in wireless communication system

Abstract

A method by which a device performs wireless communication, and a device for supporting same are provided. The method may comprise the steps of: acquiring information related to a cell including information related to one or more satellite beams; acquiring location information of a device; and determining a satellite beam related to the device from among the one or more satellite beams on the basis of reference location information of the one or more satellite beams and the location information of the device.

Description

Method and device for performing communication in a wireless communication system

[0001] The present disclosure relates to a wireless communication system.

[0002] 5G NR, the successor to LTE (long-term evolution), is a new clean-slate mobile communications system characterized by high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from 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] The 6G (wireless communication) system aims to achieve (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) low energy consumption for battery-free Internet of Things (IoT) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision of the 6G system can be divided into four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can satisfy the requirements as shown in Table 1 below. For example, Table 1 can represent an example of the requirements of a 6G system.

[0004] Maximum data rate per device: 1 Tbps, E2E latency: 1 ms, Maximum spectral efficiency: 100 bps / Hz, Mobility support: Up to 1000 km / hr, Satellite integration: Fully AI, Fully autonomous driving, Fully XR, Fully haptic communication

[0005] The present disclosure provides a device and method for effectively providing services in a wireless communication system. In particular, the present disclosure provides a method and device for communication.

[0006] According to one embodiment of the present disclosure, a method may be provided. For example, the method may include: obtaining information related to a cell, the information including information related to at least one satellite beam; obtaining location information of a device; and determining a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0007] According to one embodiment of the present disclosure, a device may be provided. For example, the device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, when executed by the at least one processor, may cause the device to: obtain information related to a cell including information related to at least one satellite beam; obtain location information of the device; and determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0008] According to one embodiment of the present disclosure, a processing device configured to control a device may be provided. For example, the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, when executed by the at least one processor, may cause the device to: obtain information related to a cell including information related to at least one satellite beam; obtain location information of the device; and determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0009] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a device to: obtain information related to a cell including information related to at least one satellite beam; obtain location information of the device; and determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0010] According to one embodiment of the present disclosure, a method may be provided. For example, the method may include the step of transmitting, to a device, information related to a cell, the information including information related to at least one satellite beam. For example, location information of the device may be obtained. For example, based on reference location information of the at least one satellite beam and the location information of the device, a satellite beam related to the device may be determined among the at least one satellite beam.

[0011] According to one embodiment of the present disclosure, a base station may be provided. For example, the base station may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the base station to: transmit, to a device, information related to a cell, the information including information related to at least one satellite beam. For example, location information of the device may be obtained. For example, based on reference location information of the at least one satellite beam and location information of the device, a satellite beam related to the device may be determined among the at least one satellite beam.

[0012] According to one embodiment of the present disclosure, a processing device configured to control a base station may be provided. For example, the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the base station to: transmit information related to a common search space; and transmit system information change information during a change time interval. For example, based on the information related to the common search space being provided to the device and based on the fact that downlink reception related to the system information change information conflicts with uplink transmission during the change time interval, monitoring for the downlink reception may be prioritized during the change time interval.

[0013] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a base station to: transmit information related to a common search space; and transmit system information change information during a change time interval. For example, based on the information related to the common search space being provided to the device and based on the fact that downlink reception related to the system information change information conflicts with uplink transmission during the change time interval, monitoring for the downlink reception may be prioritized during the change time interval.

[0014] The present disclosure can provide a device and method for effectively providing services in a wireless communication system. For example, communication can be performed efficiently through the embodiments proposed in the present disclosure.

[0015] Figure 1 illustrates a device-to-device communication procedure according to one embodiment of the present disclosure.

[0016] FIG. 2 illustrates a radio protocol architecture according to one embodiment of the present disclosure.

[0017] FIG. 3 illustrates the structure of a wireless frame according to one embodiment of the present disclosure.

[0018] FIG. 4 illustrates a slot structure of a frame according to one embodiment of the present disclosure.

[0019] FIG. 5 illustrates an example of a BWP according to one embodiment of the present disclosure.

[0020] FIG. 6 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.

[0021] FIG. 7 illustrates an example of a communication scenario based on a 6G system according to one embodiment of the present disclosure.

[0022] FIG. 8 illustrates a procedure for downlink transmission and reception according to one embodiment of the present disclosure.

[0023] FIG. 9 illustrates a procedure for uplink transmission and reception according to one embodiment of the present disclosure.

[0024] FIG. 10 illustrates an example of an NTN according to one embodiment of the present disclosure.

[0025] FIG. 11 illustrates an example of a typical scenario of an NTN based on a transparent payload, according to one embodiment of the present disclosure.

[0026] FIG. 12 illustrates an example of a typical scenario of an NTN based on a regenerative payload, according to one embodiment of the present disclosure.

[0027] FIG. 13 illustrates a method by which a device performs wireless communication according to one embodiment of the present disclosure.

[0028] FIG. 14 illustrates a method for a base station to perform wireless communication according to one embodiment of the present disclosure.

[0029] FIG. 15 illustrates a communication system (1) according to one embodiment of the present disclosure.

[0030] FIG. 16 illustrates a wireless device according to one embodiment of the present disclosure.

[0031] FIG. 17 illustrates a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0032] FIG. 18 illustrates a wireless device according to one embodiment of the present disclosure.

[0033] FIG. 19 illustrates a mobile device according to an embodiment of the present disclosure.

[0034] FIG. 20 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure.

[0035] In this disclosure, "A or B" can mean "only A," "only B," or "both A and B." In other words, "A or B" in this disclosure can be interpreted as "A and / or B." For example, "A, B or C" in this disclosure can mean "only A," "only B," "only C," or "any combination of A, B and C."

[0036] As used herein, a slash ( / ) or a comma may mean "and / or." For example, "A / B" may mean "A and / or B." Accordingly, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B, or C."

[0037] In the present disclosure, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Additionally, in the present disclosure, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted identically to “at least one of A and B.”

[0038] Additionally, in the present disclosure, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0039] Additionally, parentheses used in the present disclosure may mean "for example." Specifically, when indicated as "control information (PDCCH)", "PDCCH" may be proposed as an example of "control information." In other words, "control information" in the present disclosure is not limited to "PDCCH," and "PDCCH" may be proposed as an example of "control information." Furthermore, even when indicated as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information."

[0040] In the following explanation, ‘when, if, in case of’ can be replaced with ‘based on’.

[0041] Technical features individually described in one drawing in this disclosure may be implemented individually or simultaneously.

[0042] In the present disclosure, higher layer parameters may be parameters set for the terminal, preset, or predefined. For example, a base station or network may transmit higher layer parameters to the terminal. For example, the higher layer parameters may be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0043] In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device through predefined signaling (e.g., SIB, MAC, RRC, DCI (downlink control information), etc.) from a base station or a network. In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device through predefined signaling (e.g., MAC, RRC, SCI (sidelink control information), device-to-device signaling control information, etc.) from another device. In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device.

[0044] In the present disclosure, a user equipment (UE) may refer to a device, a portable device, a wireless device, etc. In the present disclosure, a base station (BS) may refer to a radio access network (RAN) node, a non-terrestrial network (NTN) cell / node, a transmission reception point (TRP), a network, an integrated access and backhaul (IAB) node, a device, a portable device, a wireless device, etc.

[0045] The technology proposed in the present disclosure can be used in various wireless communication systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.

[0046] The technology proposed in this disclosure can be implemented with 6G wireless technology and applied to various 6G systems. For example, 6G systems can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (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.

[0047] FIG. 1 illustrates a device-to-device communication procedure according to one embodiment of the present disclosure. The embodiment of FIG. 1 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0048] Referring to FIG. 1, in step S101, a first device and a second device can perform synchronization. For example, the first device can be a terminal and / or at least one of the devices proposed in the present disclosure. For example, the second device can be a base station, a network, a RAN node, an NTN node / cell, a TRP, a terminal and / or at least one of the devices proposed in the present 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 by the second device according to a predefined rule. Here, for example, the synchronization signal can include a plurality of synchronization signals classified according to a structure or purpose (e.g., a primary synchronization signal, a secondary synchronization signal, etc.). Through this, the first device can identify the boundaries of the frame, subframe, time unit, slot, and / or symbol of the second device, and the first device can obtain information about the second device (e.g., a cell identifier).

[0049] In step S103, the first device can obtain system information transmitted by the second device. For example, the system information may include information related to the properties, characteristics, and / or capabilities of the second device required to connect to the second device and use the service. For example, the system information may be classified according to content (e.g., whether it is essential for connection), transmission structure (e.g., the channel used, whether it is provided on-demand), etc. For example, the system information may be classified into a master information block (MIB) and a system information block (SIB). For example, if necessary, the first device may transmit a signal requesting system information before receiving the system information. For example, the request and provision of system information may be performed after a random access procedure described below.

[0050] In step S105, the first device and the second device can perform a random access procedure. For example, the first device can transmit and / or receive at least one message (e.g., a random access preamble, a random access response message, etc.) for the random access procedure based on information related to a random access channel of the second device obtained through system information (e.g., channel location, channel structure, structure of supported preamble, etc.). For example, the first device can transmit a preamble (e.g., Msg1) through the random access channel, the first device can receive a random access response message (e.g., Msg2), the first device can transmit 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 one message (e.g., MsgA), and / or Msg2 and Msg4 can be sent and received as one message (e.g., MsgB).

[0051] In step S107, the first device and the second device may perform signaling of control information. Here, for example, the control information may be defined in various layers, such as a layer that controls a connection (e.g., a radio resource control (RRC) layer), a layer that handles mapping between logical channels and transport channels (e.g., a media access control (MAC) layer), a layer that handles physical channels (e.g., a physical (PHY) layer), etc. For example, the first device and the second device may perform at least one of signaling for establishing a connection, signaling for determining settings related to communication, and / or signaling for indicating allocated resources. For example, the control information may be signaled / transmitted via a control channel. For example, the control information and / or the control channel may be used to schedule at least one of data, a data channel (e.g., a shared channel), and / or control information on the data channel.

[0052] In step S109, the first device and the second device may transmit and / or receive data. For example, the first device and the second device may process, transmit, and / or receive data based on signaling of control information. For example, when transmitting data, the first device or the second device may perform at least one of channel encoding, 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 device or the second device may perform at least one of signal extraction from resources, waveform demodulation for each antenna, signal arrangement considering layer mapping, constellation demapping, descrambling, and / or channel decoding.

[0053] For example, the layers of a radio interface protocol between a first device and a second device can be divided into L1 (layer 1), L2 (layer 2), L3 (layer 3), etc. For example, a physical layer belonging to the first layer can provide an information transfer service using a physical channel, and an RRC (radio resource control) layer located in the third layer can play a role in controlling radio resources between the first device and the second device. For this purpose, for example, the RRC layer can exchange RRC messages between the first device and the second device.

[0054] FIG. 2 illustrates a radio protocol architecture according to an embodiment of the present disclosure. The embodiment of FIG. 2 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted. For example, (a) of FIG. 2 may illustrate a radio protocol stack of a user plane for uplink communication or downlink communication, and (b) of FIG. 2 may illustrate a radio protocol stack of a control plane for uplink communication or downlink communication. For example, (c) of FIG. 2 may illustrate a radio protocol stack of a user plane for device-to-device communication, and (d) of FIG. 2 may illustrate a radio protocol stack of a control plane for device-to-device communication.

[0055] For example, the physical layer can provide information transmission services to upper layers using physical channels. For example, the physical layer can be connected to the upper layer, the medium access control (MAC) layer, through a transport channel. For example, data can be transmitted between the MAC layer and the physical layer through the transport channel. For example, transport channels can be classified according to how and with what characteristics data is transmitted over the wireless interface. For example, data can be transmitted between different physical layers, for example, between the physical layers of a first device and a second device, through 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 utilized as radio resources.

[0056] For example, the MAC layer can provide services to the upper layer, the radio link control (RLC) layer, through logical channels. For example, the MAC layer can provide a mapping function from multiple logical channels to multiple transport channels. For example, the MAC layer can provide a logical channel multiplexing function by mapping multiple logical channels to a single transport channel. For example, the MAC sublayer can provide data transmission services on logical channels.

[0057] 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) required by radio bearers (RBs), 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).

[0058] For example, the RRC (radio resource control) layer can be defined only in the control plane. For example, the RRC layer can be responsible for controlling logical channels, transport channels, and physical channels in relation to the configuration, re-configuration, and release of radio bearers. For example, an RB can mean a logical path provided by a first layer (e.g., a physical layer) and a second layer (e.g., a MAC layer, an RLC layer, a PDCP (packet data convergence protocol) layer, a SDAP (service data adaptation protocol) layer, etc.) for data transmission between a first device and a second device.

[0059] For example, the functions of the PDCP layer in the user plane may include forwarding of user data, header compression, and ciphering. For example, the functions of the PDCP layer in the control plane may include forwarding of control plane data and ciphering / integrity protection.

[0060] For example, establishing an RB can refer to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. For example, RBs can be divided into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). For example, SRBs can be used as a channel to transmit RRC messages in the control plane, while DRBs can be used as a channel to transmit user data in the user plane.

[0061] For example, if an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal will be in the RRC_CONNECTED state, and if not, it may be in the RRC_IDLE state. For example, in the case of NR, the RRC_INACTIVE state is additionally defined, and a terminal in the RRC_INACTIVE state can release the connection with the base station while maintaining the connection with the core network.

[0062] For example, a downlink transmission 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 control messages. For example, traffic or control messages of a downlink multicast or broadcast service may be transmitted through the downlink SCH, or may be transmitted through a separate downlink multicast channel (MCH). Meanwhile, an uplink transmission 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 control messages. For example, a logical channel located above a transmission channel and mapped to the transmission 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).

[0063] FIG. 3 illustrates the structure of a wireless frame according to an embodiment of the present disclosure. The embodiment of FIG. 3 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0064] Referring to FIG. 3, for example, a radio frame may be used in uplink transmission, downlink transmission, and / or device-to-device transmission. For example, a radio frame may have a length of 10 ms and may be defined as two 5 ms half-frames (HF). For example, a half-frame may include five 1 ms subframes (SF). For example, a subframe may be divided into one or more slots, and the number of slots within a subframe may be determined according to a subcarrier spacing (SCS). For example, each slot may include 12 or 14 OFDM (A) symbols, depending on a cyclic prefix (CP).

[0065] For example, when normal CP is used, each slot can contain 14 symbols. For example, when extended CP is used, each slot can contain 12 symbols. Here, for example, the symbols can contain OFDM symbols (or CP-OFDM symbols), SC-FDMA (single carrier-FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0066] Table 2 below shows the number of symbols per slot (N) depending on the SCS setting (u) when normal CP or extended CP is used. slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot ) is an example.

[0067] CP type SCS (15*2 u )N slot symb N frame,u slot N subframe,u slotNormal CP15kHz (u=0)1410130kHz (u=1)1420260kHz (u=2)14404120kHz (u=3)14808240kHz (u=4)1416016Extended CP60kHz (u=2)12404

[0068] For example, OFDM(A) numerology (e.g., SCS, CP length, etc.) may be set differently between multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of time resources (e.g., subframes, slots, or transmit time intervals (TTIs)) composed of the same number of symbols may be set differently between the merged cells. For example, in the present disclosure, time resources such as subframes, slots, TTIs, etc. may be referred to as time units.

[0069] For example, multiple numerologies, or SCSs, may be supported to support various services. For example, a 15 kHz SCS may support wide areas in traditional cellular bands, while a 30 kHz / 60 kHz SCS may support dense urban areas, lower latency, and wider carrier bandwidth. For example, a 60 kHz or higher SCS may support bandwidths greater than 24.25 GHz to overcome phase noise.

[0070] FIG. 4 illustrates a slot structure of a frame according to an embodiment of the present disclosure. The embodiment of FIG. 4 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0071] Referring to FIG. 4, for example, a slot may include multiple symbols in the time domain. For example, a carrier may include multiple subcarriers in the frequency domain. For example, a resource block (RB) may be defined as multiple consecutive subcarriers in the frequency domain. For example, a bandwidth part (BWP) may be defined as multiple consecutive (P)RBs ((physical) resource blocks) in the frequency domain, and may correspond to one numerology (e.g., SCS, CP length, etc.). For example, a carrier may include at most N BWPs (where N is a positive integer). For example, data communication may be performed through an activated BWP. For example, each element may be referred to as a resource element (RE) in the resource grid, and one complex symbol may be mapped to it.

[0072] For example, a BWP may be a contiguous set of PRBs in a given numerology. For example, a PRB may be selected from a contiguous subset of common resource blocks (CRBs) for a given numerology on a given carrier.

[0073] For example, the BWP may be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, the UE may not monitor the downlink radio link quality in a DL BWP other than the active DL BWP on the PCell (primary cell). For example, the UE may not receive a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), or a channel state information-reference signal (CSI-RS) (except for radio resource management (RRM)) outside of the active DL BWP. For example, the UE may not trigger channel state information (CSI) reporting for an inactive DL BWP. For example, the UE may not transmit a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) outside of the active UL BWP. For example, for downlink, the initial BWP can be given as a set of consecutive resource blocks (RBs) for the remaining minimum system information (RMSI) CORESET (control resource set) (set by the physical broadcast channel (PBCH)). For uplink, for example, the initial BWP can be given by the system information block (SIB) for the random access procedure. For example, the default BWP can be set by a higher layer. For example, the initial value of the default BWP can be the initial DL BWP.For energy saving, if a terminal does not detect DCI (downlink control information) for a certain period of time, the terminal may switch its active BWP to a default BWP.

[0074] FIG. 5 illustrates an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 5 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted. In the embodiment of FIG. 5, it is assumed that there are three BWPs.

[0075] Referring to FIG. 5, for example, a common resource block (CRB) may be a carrier resource block numbered from one end of a carrier band to the other, and a PRB may be a numbered resource block within each BWP. For example, point A may indicate a common reference point for a resource block grid.

[0076] For example, the BWP can be set by Point A, an offset from Point A (NstartBWP), and a bandwidth (NsizeBWP). For example, Point A can be an outer reference point of a PRB of a carrier where subcarrier 0 of all numerologies (e.g., all numerologies supported by the network on that carrier) aligns. For example, the offset can be the PRB spacing between the lowest subcarrier in a given numerology and Point A. For example, the bandwidth can be the number of PRBs in a given numerology.

[0077] FIG. 6 illustrates a communication structure that can be provided in a 6G system according to an embodiment of the present disclosure. The embodiment of FIG. 6 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0078] As core implementation technologies of the 6G system, technologies such as artificial intelligence (AI), THz (terahertz) communication, optical wireless technology, free-space optical transmission (FSO) backhaul networks, massive MIMO (multiple input multiple output) technology, blockchain, 3D networking, quantum communication, unmanned aerial vehicles, cell-free communication, wireless information and energy transfer (WIET), integration of sensing and communication, integration of access backhaul networks, holographic beamforming, big data analysis, and large intelligent surface (LIS) can be adopted.

[0079] - Artificial Intelligence: Incorporating AI into communications can streamline and improve real-time data transmission. AI can use numerous analytics to determine how complex target tasks should be performed. For example, AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a key role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. AI can also facilitate rapid communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0080] - THz communication (terahertz communication): Data rates can be increased by increasing the bandwidth. This can be achieved by using sub-THz communication with wide bandwidths and applying advanced massive MIMO technology. THz waves, also known as sub-millimeter waves, typically refer to the frequency range between 0.1 THz and 10 THz, with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz to 300 GHz band (sub-THz band) is considered a key part of the THz spectrum for cellular communications. Adding the sub-THz band to the mmWave band will increase the capacity of 6G cellular communications. Among the defined THz bands, 300 GHz to 3 THz lies in the far infrared (IR) frequency band. While part of the optical band, the 300 GHz to 3 THz band lies at the boundary of the optical band, immediately following the RF band. Therefore, this 300 GHz to 3 THz band exhibits similarities to RF. Key characteristics of THz communications include (i) the widely available bandwidth to support very high data rates and (ii) the high path loss that occurs at high frequencies (requiring highly directional antennas). The narrow beamwidths generated by highly directional antennas reduce interference. The small wavelength of THz signals allows for a significantly larger number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array technologies to overcome range limitations.

[0081] - Large-scale MIMO technology

[0082] - Hologram beamforming (HBF)

[0083] - Optical wireless technology

[0084] - Free-space optical transmission backhaul network (FSO backhaul network)

[0085] - Quantum communication

[0086] - Cell-free communication

[0087] - Integration of wireless information and power transmission

[0088] - Integration of wireless communication and sensing

[0089] - Integrated access and backhaul network

[0090] - Big data analysis

[0091] - Reconfigurable intelligent surface

[0092] - metaverse

[0093] - Block chain

[0094] Advanced Air Mobility (AAM): AAM can be a broad concept encompassing urban air mobility (UAM), regional air mobility (RAM), and uncrewed aerial systems (UAS). For example, AAM can include UAM, RAM, UAS, and uncrewed aerial vehicles (UAVs).

[0095] - Autonomous driving (self-driving): V2X (vehicle to everything), a key element in building autonomous driving infrastructure, can be a technology that allows cars to communicate and share with various elements on the road for autonomous driving, such as vehicle to vehicle (V2V) wireless communication and vehicle to infrastructure (V2I) wireless communication.

[0096] Non-terrestrial network (NTN): NTN can refer to a network or network segment that utilizes radio frequency (RF) resources mounted on satellites (or UAS platforms). NTN services may be considered to secure wider coverage or provide wireless communication services in locations where the installation of wireless communication base stations is difficult.

[0097] - Integrated sensing and communication (ISAC): Wireless sensing is a technology that uses radio frequencies to determine the instantaneous linear velocity, angle, distance (range), etc. of an object, thereby obtaining information about the characteristics of the environment and / or objects within the environment.

[0098] - Reconfigurable intelligent surface (RIS): RIS can be used to manipulate and enhance signal propagation in wireless communication environments. For example, a RIS can be composed of many small antennas, or metasurfaces, arranged on a surface, each of which can actively control the phase, amplitude, polarization, etc. of the reflected signal. For example, a RIS can improve signal reception by controlling the path, phase, and / or intensity of the propagating signal. For example, in the case of a RIS, power consumption can be very low because power is consumed only for controlling the phase and amplitude of the small antennas. For example, because a RIS can be reconfigured to suit different environments, it can meet diverse communication requirements and operate effectively in dynamic network environments.

[0099] FIG. 7 illustrates an example of a communication scenario based on a 6G system, according to an embodiment of the present disclosure. The embodiment of FIG. 7 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0100] Referring to FIG. 7, NTN communication can be performed based on satellite networks, high-altitude platform stations (HAPS) as international mobile telecommunications (IMT) base stations (BS), and terminals capable of aerial communication (e.g., AAMs). For example, to improve coverage, etc., devices such as satellite networks, HIBS, and terminals capable of aerial communication (e.g., AAMs) can act as relays. For example, an AAM can communicate with a base station, a satellite network, etc., and / or an AAM can communicate directly with a terminal, another AAM, etc.

[0101] FIG. 8 illustrates a procedure for downlink transmission and reception according to an embodiment of the present disclosure. The embodiment of FIG. 8 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0102] Referring to FIG. 8, for example, in step S801, the base station can schedule downlink transmissions such as frequency / time resources, transmission layers, downlink precoder, MCS, etc. For example, the base station can determine a beam for PDSCH transmission of the terminal through the operations described above.

[0103] For example, in step S802, the terminal can receive downlink control information (DCI) for downlink scheduling (e.g., including scheduling information of PDSCH) from the base station on the PDCCH.

[0104] For example, DCI format 1_0 or 1_1 may be used for downlink scheduling, and in particular, DCI format 1_1 may include the following information: Identifier for DCI formats, Bandwidth part indicator, Frequency domain resource assignment, Time domain resource assignment, PRB bundling size indicator, Rate matching indicator, ZP CSI-RS trigger, Antenna port(s), Transmission configuration indication (TCI), SRS request, DMRS (Demodulation Reference Signal) sequence initialization.

[0105] For example, depending on each state indicated in the Antenna port(s) field, a number of DMRS ports can be scheduled, and also single-user (SU) / multi-user (MU) transmission scheduling can be possible.

[0106] For example, the TCI field consists of 3 bits, and QCL for DMRS can be dynamically indicated by indicating up to 8 TCI states depending on the TCI field value.

[0107] For example, in step S803, the terminal can receive downlink data from the base station on the PDSCH.

[0108] For example, if a terminal detects a PDCCH including DCI format 1_0 or 1_1, it can decode the PDSCH according to instructions by the corresponding DCI.

[0109] For example, when a terminal receives a PDSCH scheduled by DCI format 1, the terminal may set a DMRS configuration type by a higher layer parameter 'dmrs-Type', and the DMRS type may be used to receive the PDSCH. For example, the terminal may set a maximum number of DMRA symbols to be front-loaded for the PDSCH by a higher layer parameter 'maxLength'.

[0110] For example, for DMRS configuration type 1, if a terminal is scheduled with a single codeword and is assigned an antenna port mapped with an index of {2, 9, 10, 11, or 30}, or if a terminal is scheduled with two codewords, the terminal can assume that all remaining orthogonal antenna ports are not associated with a PDSCH transmission to another terminal.

[0111] For example, for DMRS configuration type 2, if a terminal is scheduled with a single codeword and is assigned an antenna port mapped with an index of {2, 10, or 23}, or if a terminal is scheduled with two codewords, the terminal can assume that all remaining orthogonal antenna ports are not associated with a PDSCH transmission to another terminal.

[0112] For example, when a terminal receives a PDSCH, a precoding granularity P' can be assumed to be a consecutive resource block in the frequency domain. For example, P' can correspond to one of the values ​​{2, 4, wideband}.

[0113] For example, if P' is determined to be wideband, the terminal does not expect to be scheduled with non-contiguous PRBs, and the terminal can assume that the same precoding is applied to the allocated resources.

[0114] For example, if P' is determined to be one of {2, 4}, a precoding 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, a UE can assume that the same precoding is applied to consecutive downlink PRBs within a PRG.

[0115] For example, in order for a terminal to determine the modulation order, target code rate, and transport block size within a PDSCH, the terminal may first read a 5-bit MCD field within the DCI to determine the modulation order and target code rate. Then, the terminal may read a redundancy version field within the DCI to determine the redundancy version. Then, the terminal may determine the transport block size using the number of layers and the total number of allocated PRBs before rate matching.

[0116] FIG. 9 illustrates a procedure for uplink transmission and reception according to an embodiment of the present disclosure. The embodiment of FIG. 9 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0117] Referring to FIG. 9, for example, in step S901, the base station may schedule uplink transmissions such as frequency / time resources, transmission layers, uplink precoder, MCS, etc. For example, the base station may determine a beam for PUSCH transmission of the terminal through the operations described above.

[0118] For example, in step S902, the terminal may receive DCI for uplink scheduling (e.g., including scheduling information of PUSCH) from the base station on the PDCCH.

[0119] For example, DCI format 0_0 or 0_1 may be used for uplink scheduling, and in particular, DCI format 0_1 ​​may include the following information: DCI format identifier, UL / SUL (Supplementary uplink) indicator, UL / SUL indicator, bandwidth part indicator, frequency domain resource assignment, time domain resource assignment, frequency hopping flag, modulation and coding scheme (MCS), SRS resource indicator (SRI), precoding information and number of layers, antenna port(s), SRS request, DMRS sequence initialization, UL-SCH (Uplink Shared Channel) indicator.

[0120] For example, SRS resources configured within a set of SRS resources associated with the upper layer parameter 'usage' can be indicated by the SRS resource indicator field. For example, 'spatialRelationInfo' can be configured for each SRS resource, and its value can be one of {CRI, SSB, SRI}.

[0121] For example, in step S903, the terminal may transmit uplink data to the base station on PUSCH.

[0122] For example, if a terminal detects a PDCCH including DCI format 0_0 or 0_1, it can transmit the corresponding PUSCH according to the instructions of the corresponding DCI.

[0123] For example, two transmission schemes (e.g., codebook-based transmission for PUSCH transmission and non-codebook-based transmission for PUSCH transmission) may be supported:

[0124] i) For example, when the upper layer parameter 'txConfig' is set to 'codebook', the terminal may be configured for codebook-based transmission. For example, when the upper layer parameter 'txConfig' is set to 'nonCodebook', the terminal may be configured for non-codebook-based transmission. For example, if the upper layer parameter 'txConfig' is not set, the terminal may not expect to be scheduled by DCI format 0_1. For example, when PUSCH is scheduled by DCI format 0_0, PUSCH transmission may be based on a single antenna port.

[0125] For example, in case of codebook-based transmission, PUSCH can be scheduled in DCI format 0_0, DCI format 0_1, or semi-statically. For example, if this PUSCH is scheduled by DCI format 0_1, the UE can determine the PUSCH transmission precoder based on the SRI, the transmit precoding matrix indicator (TPMI), and the transmission rank from the DCI, as given by the SRS resource indicator field and the precoding information and number of layers field. For example, the TPMI is used to indicate the precoder to be applied across antenna ports, and may correspond to the SRS resource selected by the SRI when multiple SRS resources are configured. For example, if a single SRS resource is configured, the TPMI is used to indicate the precoder to be applied across antenna ports, and may correspond to the single SRS resource. For example, a transmit precoder may be selected from an uplink codebook having the same number of antenna ports as the upper layer parameter 'nrofSRS-Ports'. For example, when a terminal sets an upper layer with 'codebook' as the parameter 'txConfig', the terminal may be configured with at least one SRS resource. For example, an SRI indicated in slot n is associated with the most recent transmission of the SRS resource identified by the SRI, wherein the SRS resource may precede the PDCCH carrying the SRI (e.g., slot n).

[0126] ii) For example, in case of non-codebook based transmission, PUSCH can be scheduled in DCI format 0_0, DCI format 0_1, or semi-statically. 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 uses one or multiple SRS resources for SRS transmission, where the number of SRS resources can be configured for simultaneous transmission within the same RB based on the UE capability. 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 may 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 may precede the PDCCH carrying the SRI (e.g., slot n).

[0127] FIG. 10 illustrates an example of an NTN according to an embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0128] Referring to Fig. 10, examples according to NTN platform types can be shown. For example, examples according to NTN platform types can be HAPS (High-Altitude Platform Station), LEO (Low Earth orbit), MEO (Medium Earth orbit), or GEO (Geo-stationary Earth orbit).

[0129] For example, parameters related to a High-Altitude Platform Station (HAPS) may be as follows: For example, the altitude of the High-Altitude Platform Station (HAPS) may be 20 km. For example, the beam footprint size of the High-Altitude Platform Station (HAPS) may be 5-200 km.

[0130] For example, parameters related to LEO (Low Earth orbit) can be as follows. For example, the altitude of LEO (Low Earth orbit) can be 300-1500 km. For example, the beam footprint size of LEO (Low Earth orbit) can be 100-1000 km. For example, the satellite speed in LEO (Low Earth orbit) can be 7.56 km / sec (for LEO-600). For example, the maximum propagation delay in LEO (Low Earth orbit) can be 25.77 msec (for LEO-600).

[0131] For example, parameters related to MEO (Medium Earth orbit) can be as follows. For example, the altitude of MEO (Medium Earth orbit) can be 7000-25000 km. For example, the beam footprint size of MEO (Medium Earth orbit) can be 100-1500 km. For example, the maximum propagation delay of MEO (Medium Earth orbit) can be 95.19 msec (for MEO-10000).

[0132] For example, the parameters related to Geo-stationary Earth orbit (GEO) can be as follows. For example, the altitude of Geo-stationary Earth orbit (GEO) can be 35786 km. For example, the beam footprint size of Geo-stationary Earth orbit (GEO) can be 200-3500 km. For example, the satellite speed of Geo-stationary Earth orbit (GEO) can be 3.1 km / sec (negligible). For example, the maximum propagation delay of Geo-stationary Earth orbit (GEO) can be 541.46 msec.

[0133] For example, in future NTN systems, the effective isotropic radiated power (EIRP) and / or BW for DL ​​transmission may be limited, and coverage enhancement for DL ​​channel transmission may be required in the above situation.

[0134] For example, within an NTN footprint or cell or beam, there may be a mix of terminals that support DL coverage enhancement operations and terminals that do not support DL coverage enhancement operations, and therefore, DL coverage enhancement operations may need to minimize the impact on existing legacy terminals.

[0135] For example, in an NTN system, the number or ratio of (beam) footprints that a single satellite or HAPS (high altitude platform station) can have active simultaneously may be limited, either by increasing the EIRP for the activated (beam) footprints or by using a generic value. For example, the way in which (beam) footprints are activated and / or deactivated over time may take the form of time periods during which all or part of the DL reception operations (e.g., PDCCH monitoring and / or reference signal reception and / or CSI / RRM / RLM measurements and / or SSB reception, etc.) are required / allowed and / or not allowed at the terminal end.

[0136] For example, the base station may provide cell DTX and / or DRX configuration information to the terminal, and the cell DTX configuration information may include cell DTX ON duration information (start offset and / or duration length). For example, a terminal that has received the cell DTX configuration information may perform PDCCH monitoring in a serving cell corresponding to the cell DTX configuration during a time period in which celldtxdrx-onDurationTimer operates and / or a time period in which drx-RetransmissionTimerDL or drx-RetransmissionTimerUL or drx-RetransmissionTimerSL operates and / or a time period in which SR on PUCCH is pending and / or a time period in which a PDCCH indicating a new transmission for a C-RNTI has not yet been detected after successfully receiving an RAR for a PRACH that is not selected by a MAC entity and / or a time period in which ra-ResponseWindow is operating in a SPCell, if the cell DTX configuration information is activated (via RRC and / or group-common DCI). The union of the above time periods can be named the cell DTX active time period. For example, in the case of terminal operation by the retransmission timer of the C-DRX, it could be extended to PDCCH monitoring for serving cells belonging to the DRX group.For example, a terminal provided with the above cell DTX configuration information may, in a time domain other than the cell DTX Active time period for the various factors mentioned above, skip PDCCH monitoring in the serving cell and / or not instruct DL-SCH reception operation according to SPS PDSCH in the physical layer, and / or not instruct the existence of a configured DL assignment, and / or not transmit stored HARQ information therefor, and / or not set the HARQ process ID to the HARQ process ID associated with the PDSCH duration of the configured DL assignment, and / or not consider that the NDI is toggled for the HARQ process ID associated with the PDSCH duration of the configured DL assignment. For example, the applicability and method for various embodiments of the present disclosure may be applied differently for fallback DCI formats and non-fallback DCI formats and / or for each DCI format.

[0137] The application and method to various embodiments of the present disclosure may be applied differently for each CSS (all or part of CSS (Type-0 and / or Type-0A and / or Type-1 and / or Type-2 and / or Type-3)) and each USS and / or each CORESET#0 and each non-zero CORESET and / or each search space and / or each CORESET.

[0138] Whether and how to apply the various embodiments of the present disclosure may be applied differently depending on the RNTI for the PDCCH and / or depending on the purpose of the PDCCH (whether it is SIB1 scheduling and / or whether it is direct message transmission).

[0139] The various combinations of embodiments of the present disclosure may be applied differently depending on the payload type of the satellite (e.g., regenerative or transparent payload).

[0140] The various combinations of embodiments of the present disclosure may be applied differently depending on the type of non-terrestrial network node (e.g., GEO, NGEO, LEO, MEO, HASP, drone) or altitude or fixed beam footprint or cell-moving beam footprint, etc.

[0141] For example, in a situation where the number or ratio of beam footprints that can be activated simultaneously is limited, SSB transmission between different cells and / or between different beam footprints can be configured to be TDMed as much as possible. For example, the TDM may be TDMed on a slot basis between different cells or beam footprints, and / or TDMed on a symbol basis, and / or TDMed on a number of ms or microseconds. For example, the time period during which an SIB (e.g., SIB1) can be transmitted after an SSB transmission may need to be limited, and in particular, in a situation where the frequency domain is also limited, the amount of resources for the PDSCH may not be sufficient to transmit the SIB.

[0142] For example, a specific single SIB may be transmitted through multiple PDSCH resources. For example, the TBs transmitted through the multiple PDSCHs may all be the same, and / or the coding rate for the TBs transmitted through each PDSCH may be above a certain level. For example, the TBs transmitted through the multiple PDSCHs may be in the form of segmented SIBs, and / or the coding rate for the TBs transmitted through each PDSCH may be below a certain level. For example, the multiple PDSCHs may be scheduled through a single DCI, and / or the allocation status and / or information for the next PDSCH may be indicated / provided through information in the previous PDSCH.

[0143] For example, in a situation where the number or ratio of beam footprints that can be activated simultaneously is limited, SSB transmission between different cells and / or between different beam footprints may use a different SCS (e.g., 30 kHz SCS) than the SCS for data and / or CORESET0 (e.g., 15 kHz SCS). For example, the rationale for this may be to reduce the time interval occupied by the SSB in the time axis. For example, reducing the size of the BW may be considered as a method to reduce the aggregated EIRP at the satellite end, and in the above situation, the frequency size of CORESET0 indicated by SSB may not achieve the BW. For example, therefore, a method to reduce the BW for CORESET0 may be required at least for NTN cells.

[0144] For example, the number of PRBs of CORESET0 indicated in PBCH may be used to support 12 and / or 24 PRBs based on 15kHz SCS and / or 6 and / or 12 PRBs based on 30kHz SCS by using the reserved state of the field indicating the number of PRBs. For example, the BW may be indicated using the MIB (spare bit field and / or reserved state). For example, a table supporting the BW may be created limited to a carrier and / or band corresponding to an NTN operation, and a specific state of the table may be indicated in the PBCH.

[0145] For example, non-interleaved CCE-to-REG mapping can be enabled through an instruction using PBCH and / or MIB (spare bit field and / or reserved state). In the above case, the terminal can ensure that a specific PDCCH candidate is confined within the target BW even if the BW of CORESET0 is above a certain level.

[0146] For example, at the terminal end, there may be a situation where the PCID for the cell is maintained, but the serving satellite changes (while the serving gNB is maintained).

[0147] For example, the terminal may deactivate cell DTX and / or DRX configurations for the source serving cell or satellite after the t-service. For example, the terminal may assume / determine cell DTX and / or DRX configurations configured for the target serving satellite after the t-service and / or after t-serviceStart for the target serving satellite. For example, the cell DTX and / or DRX configurations may include valid serving satellite information. For example, the basis for this may be that after the t-service, the changed cell DTX and / or DRX configurations are followed as the serving satellite is changed.

[0148] For example, the validity time duration for cell DTX and / or DRX configuration may be determined through a separate timer other than t-service.

[0149] For example, the cell DTX and / or DRX configuration for a first satellite may be valid when the distance between the terminal and the reference location for the first satellite is within a distance threshold set / instructed by the base station, and / or the cell DTX and / or DRX configuration may be deactivated in other areas.

[0150] For example, the terminal may use / follow parameter(s) (e.g., cell DTX and / or DRX configuration) for the associated satellite based on the reference location and distance threshold.

[0151] For example, cell DTX and / or DRX configuration may be configured and / or instructed by the base station to the terminal based on associated beam footprint information and / or SSB index information and / or CSI-RS information and / or cell information (e.g., cell ID) and / or satellite information (e.g., reference location and / or distance threshold).

[0152] For example, the base station may instruct / configure cell DTX and / or DRX configuration changes to suit the beam footprint associated with the terminal.

[0153] For example, upon re-synchronization due to satellite switching, beam management related measurements / reports / parameters from the original source serving satellite may no longer be valid.

[0154] For example, the terminal may determine TX and / or RX spatial settings by referencing the terminal's position and the satellite's position based on ephemeris information. For example, when the ephemeris information changes and / or after an epoch time for the change, the terminal may change the TX and / or RX spatial settings.

[0155] For example, the terminal may initialize beam management related parameters and / or operations (e.g., beam failure detection, beam failure recovery) when the ephemeris information changes and / or after an epoch time for the previous ephemeris information is valid.

[0156] For example, a handover may occur to another cell within the same serving satellite and / or a handover may occur to another cell on a different serving satellite. For example, in the above situation, the other cells may all be associated with the same serving gNB. For example, it may be assumed that the base station may transmit cell DTX and / or DRX configuration for the target cell to the UE, and / or that the UE activates the cell DTX and / or DRX operation after the HO.

[0157] For example, in the above situation, the other cell may be associated with a different serving gNB. For example, the base station may also provide information related to active satellite beams (such as beam activity and / or target time interval information) to a terminal performing neighboring cell measurement, and / or the terminal may report the information back to the serving cell. For example, the serving cell may determine the HO target and timing based on the information.

[0158] For example, the base station may derive the active PCID based on the PCID acquired from the SSB detected by the terminal. For example, the PCIDs that can be active at the same time may be grouped, or the active cell may be derived based on the modulo value of the PCID. For example, the relevant information may be provided to the terminal from the serving cell. For example, the relevant information may be exchanged through communication between base stations and / or communication between the base station and the serving satellite.

[0159] For example, in NTN communication scheme, the cell radius may be relatively large, while the appropriate RRC settings or beams may differ depending on the beam footprint. In particular, when switching between wide beams and narrow beams, if the base station is slow in recognizing the appropriate narrow beam, it may be inefficient in terms of latency and reliability.

[0160] For example, in a satellite communication system, the coverage area (cell) provided by a satellite may consist of multiple satellite beam footprints. As a terminal moves within a satellite-provided cell, movement may occur between different beam footprints within the same cell. In such situations, the base station and / or terminal must accurately recognize and identify the specific beam footprint to which the terminal belongs. Therefore, a method for efficiently acquiring and reporting beam footprint information based on the terminal's location information is required, thereby enabling stable and effective communication.

[0161] FIG. 11 illustrates an example of a typical NTN scenario based on a transparent payload according to an embodiment of the present disclosure. FIG. 12 illustrates an example of a typical NTN scenario based on a regenerative payload according to an embodiment of the present disclosure. The embodiment of FIG. 11 or FIG. 12 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted. Referring to FIG. 11, a satellite (or UAS platform) may create a service link with a UE. The satellite (or UAS platform) may be connected to a gateway via a feeder link. The satellite may be connected to a data network via the gateway. A beam footprint may refer to an area where a signal transmitted by the satellite can be received. Referring to FIG. 12, a satellite (or UAS platform) may create a service link with a UE. A satellite (or UAS platform) connected to a UE can be connected to other satellites (or UAS platforms) via inter-satellite links (ISLs). Other satellites (or UAS platforms) can be connected to a gateway via feeder links. Based on the replay payload, a satellite can be connected to a data network through other satellites and gateways. If an ISL does not exist between a satellite and another satellite, a feeder link between the satellite and the gateway may be required. Figures 11 and 12 are merely examples of NTN scenarios, and NTN can be implemented based on various scenarios.For example, a satellite (or UAS platform) may implement a transparent or regenerative (with onboard processing) payload. For example, a satellite (or UAS platform) may generate multiple beams over a designated service area depending on the field of view of the satellite (or UAS platform). For example, the field of view of the satellite (or UAS platform) may vary depending on the onboard antenna diagram and minimum elevation angle. For example, a transparent payload may include radio frequency filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by the payload may not be altered. For example, a regenerative payload may include radio frequency filtering, frequency conversion and amplification, demodulation / decoding, switching and / or routing, and coding / modulation. For example, a regenerative payload may be substantially equivalent to equipping the satellite (or UAS platform) with all or part of the base station functionality.

[0162] For example, a terminal may move to a different beam footprint within the same cell (within the same serving satellite). For example, in the above situation, when a cell is composed of multiple beam footprints, the base station and / or the terminal may need to determine how to recognize, report, and transmit beam footprint information.

[0163] For example, the terminal can measure quantities (e.g., RSRP, RSSI, RSRQ, SINR) for SSBs of different indices. For example, the terminal may obtain the MIB through the first SSB, and if the quantity value for the first SSB is smaller than the quantity value for the second SSB (than a threshold offset set / indicated by the base station), and / or if the quantity value for the first SSB is smaller than the threshold value set / indicated by the base station, and / or if the quantity value for the second SSB is larger than the threshold value set / indicated by the base station, the terminal may assume / determine that it is associated with the beam footprint for the second SSB instead of the beam footprint for the first SSB, and may report to the base station whether the event occurred and / or information about the determined associated beam footprint and / or information about the SSB.

[0164] For example, the terminal may assume / use parameter(s) set for the beam footprint based on the associated beam footprint.

[0165] For example, the terminal can set / receive information about the SSB index to be measured for determining the associated beam footprint from the base station.

[0166] For example, the terminal may report to the base station a quantity value for the measured SSB(s) to determine the associated beam footprint.

[0167] For example, a terminal may set / receive reference location information for each beam footprint (within a cell) from a base station. For example, the terminal may determine an associated beam footprint based on the terminal's location and the reference location information for the beam footprint.

[0168] For example, the terminal may determine that the terminal is associated with the beam footprint based on the distance between the terminal's location and a reference location for the beam footprint and the terminal's location being within a distance threshold set / instructed by the base station.

[0169] For example, the terminal may determine the closest beam footprint based on the distance between a reference location for the beam footprint and the location of the terminal, and may determine that the terminal is associated with the beam footprint.

[0170] For example, when a terminal reports information related to a beam footprint to a base station, it may also provide information about DL and / or UL traffic requirements and characteristics.

[0171] For example, the terminal may report to the base station information about the associated beam footprint and / or whether the distance between the reference location for the beam footprint and the location of the terminal is within a distance threshold set / instructed by the base station and / or beam footprint information corresponding thereto.

[0172] It can efficiently perform switching between wide beams and narrow beams. The base station can efficiently select / use a narrow beam using beam footprint information reported from the terminal.

[0173] For example, the method according to the present disclosure can improve the reliability and efficiency of communication by accurately determining the appropriate satellite beam footprint associated with a terminal in a satellite communication system. By effectively utilizing satellite beam reference position information and terminal position information, signal ambiguity and handover delay that may occur when moving between beam footprints within the same cell are reduced. Consequently, system performance is enhanced, and the quality of service (QoS) experienced by users is significantly improved.

[0174] In an embodiment of the present disclosure, a terminal may perform a DL reception operation with an RX spatial setting associated with a TX beam for the beam footprint or for an SSB corresponding to the beam footprint according to a change in the associated beam footprint.

[0175] For example, a terminal may have multiple cell DTX and / or DRX configurations and switch the configurations to be activated between them.

[0176] For example, cell DTX / DRX settings may be set per BWP, and / or active cell DTX / DRX configurations may be different depending on active BWP changes.

[0177] For example, cell DTX settings may be different for each DL BWP and / or each UL BWP and / or each DL-UL BWP pair.

[0178] For example, cell DRX configuration may be different per UL BWP and / or per DL BWP and / or per UL-DL BWP pair.

[0179] For example, when changing the active BWP from the first BWP to the second BWP, and / or when the cell DTX and / or DRX operation is activated in the first BWP, the terminal may perform the cell DTX and / or DRX operation activation operation for the second BWP from the time when the second BWP becomes the active BWP.

[0180] For example, when changing the active BWP from the first BWP to the second BWP, the terminal may deactivate the cell DTX and / or DRX operation from the time period of changing from the first BWP to the second BWP and / or from the time period of starting the activation of the second BWP.

[0181] For example, embodiments of the present disclosure may differ depending on the presence / absence of a group-common DCI setting for activation / deactivation of cell DTX and / or DRX operations. For example, in the absence of the group-common DCI, cell DTX and / or DRX operations for the active BWP may be automatically activated when the active BWP is changed.

[0182] For example, DCI format 2_9 may enable or disable a specific cell DTX and / or DRX configuration among multiple cell DTX and / or DRX configurations for a specific serving cell and / or beam footprint and / or beam group.

[0183] For example, in DCI format 2_9, indicators for the first (cell) DTX and / or DRX configuration, the second (cell) DTX and / or DRX configuration, ..., the Nth (cell) DTX and / or DRX configuration for the first cell or beam footprint or beam group may be multiplexed, and for the same cell or beam footprint or beam group, only one indicator for one configuration may be 1 (activation indication) and the rest may be 0 (deactivation indication).

[0184] For example, in DCI format 2_9, indicators for a first (cell) DTX and / or DRX configuration, a second (cell) DTX and / or DRX configuration, ..., Nth (cell) DTX and / or DRX configuration for a first cell or beam footprint or beam group may be multiplexed, and a final (cell) DTX and / or DRX active time period pattern may be determined / derived as a union or intersection of active time periods by activated configurations.

[0185] For example, SIB19 or satellite-related information may be fundamentally necessary for performing NTN operations, and it is necessary to ensure reception of the information even when the cell DTX and / or DRX operations are activated.

[0186] For example, if a terminal is configured for cell DTX operation and / or there is an SI window (associated with SIB19) in a non-active time period, the terminal may perform DL reception operation and / or PDCCH monitoring for all or part of the PDCCH monitoring opportunities within the SI window.

[0187] For example, the terminal may expect SIB19 to be transmitted within an active time period or for a related SI-window to overlap in whole or in part. For example, overlapping a part of the SI-window with an active time period may include that the entire SI-window of a specific SI-window period exists within the active time period or that a part of the time domain of the SI-window of a specific or entire SI-window period exists within the active time period.

[0188] For example, neighboring cell information may include PCID, Q-offset, DL polarization, UL polarization, epoch time, and ephemeris information. For example, if the number or ratio of active beam footprints for a serving satellite is limited, information related to this may be included in the neighboring cell information or may affect neighboring cell measurements.

[0189] For example, when a base station provides neighboring cell information to a terminal, the information may include cell on / off information or may be notified in the form of MAC CE. For example, when a cell is off, the terminal may omit measurement and / or measurement reporting for the neighboring cell. For example, when a cell is off, the terminal may be instructed by the base station to set / receive a reference cell (which is on) for it and replace the measurement result.

[0190] For example, a situation may arise where a cell in the ON state changes to the OFF state from the terminal's perspective. For example, the cell's scheduled OFF state and / or the related timeline can be indicated / configured to the terminal through a paging message and / or a DCI format scrambled with P-RNTI and / or SI-RNTI. For example, a response message (such as a group-common PRACH) can be sent accordingly. For example, if the terminal does not acquire SSB and / or SIB1 and / or SIB19 and / or (other) SIB from the target satellite for a certain period of time prior to a time period in which the source serving satellite and the target satellite are simultaneously recognized and / or a time period instructed / set in t-service or t-serviceStart, the terminal may transmit a message requesting the on state of the target satellite to the source serving satellite.

[0191] In an embodiment of the present disclosure, a cell being in an Off state may mean that it does not perform SSB and / or SIB1 and / or SIB19 and / or (other) SIB and / or paging and / or random access related operations or has a relatively long cycle.

[0192] In an embodiment of the present disclosure, a cell being on may mean that it is capable of performing SSB and / or SIB1 and / or SIB19 and / or (other) SIB and / or paging and / or random access related operations or has a relatively short cycle.

[0193] FIG. 13 illustrates a method by which a device performs wireless communication, according to an embodiment of the present disclosure. The embodiment of FIG. 13 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0194] Referring to FIG. 13, for example, in step S1310, the device may obtain information related to a cell including information related to at least one satellite beam. For example, in step S1320, the device may obtain location information of the device. For example, in step S1330, the device may determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and location information of the device.

[0195] For example, the device may report information related to the satellite beam associated with the device.

[0196] For example, the information related to the satellite beam associated with the device may be reported to the base station.

[0197] For example, the information relating to the cell, including the information relating to the at least one satellite beam, may be received from a base station.

[0198] For example, at least one satellite beam may be associated with at least one beam footprint.

[0199] For example, the at least one satellite beam may be associated with a plurality of satellite beams.

[0200] For example, the device may obtain information related to a distance threshold associated with a satellite beam associated with the device among the at least one satellite beam. For example, the satellite beam associated with the device among the at least one satellite beam may be determined based on a reference position of the at least one satellite beam and a position of the device being within a threshold.

[0201] For example, the information relating to the distance threshold associated with the satellite beam associated with the device among the at least one satellite beam may be received by the base station.

[0202] For example, the device can obtain orbital information. For example, the device can determine at least one of a TX space setting or an RX space setting based on the orbital information.

[0203] For example, the device may receive one system information block. For example, the one system information block may be received over multiple physical downlink shared channels.

[0204] For example, the subcarrier spacing associated with the synchronization signal block associated with at least one satellite beam may be set differently from the subcarrier spacing associated with the synchronization signal block associated with coreset 0.

[0205] For example, the device may move from a previous satellite beam to the determined satellite beam based on the satellite beam associated with the determined device.

[0206] For example, the device may obtain a configuration including information related to cell discontinuous transmission or information related to cell discontinuous reception. For example, cell discontinuous transmission or cell discontinuous reception may be independently configured for each of the at least one satellite beam.

[0207] The above proposed method can be applied to devices according to various embodiments of the present disclosure. For example, first, the processor (102) of the device (100) can obtain information related to a cell including information related to at least one satellite beam. For example, and the processor (102) of the device (100) can obtain location information of the device. For example, and the processor (102) of the device (100) can determine a satellite beam related to the device among the at least one satellite beam based on the reference location information of the at least one satellite beam and the location information of the device.

[0208] According to one embodiment of the present disclosure, a device may be provided. For example, the device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, when executed by the at least one processor, may cause the device to: obtain information related to a cell including information related to at least one satellite beam; obtain location information of the device; and determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0209] According to one embodiment of the present disclosure, a processing device configured to control a device may be provided. For example, the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, when executed by the at least one processor, may cause the device to: obtain information related to a cell including information related to at least one satellite beam; obtain location information of the device; and determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0210] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a device to: obtain information related to a cell including information related to at least one satellite beam; obtain location information of the device; and determine a satellite beam related to the device among the at least one satellite beam based on reference location information of the at least one satellite beam and the location information of the device.

[0211] FIG. 14 illustrates a method for a base station to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 14 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0212] Referring to FIG. 14, for example, in step S1410, the base station may transmit cell-related information, including information related to at least one satellite beam, to the device. For example, location information of the device may be obtained. For example, based on reference location information of the at least one satellite beam and location information of the device, a satellite beam related to the device may be determined among the at least one satellite beam.

[0213] For example, the base station may receive information related to the satellite beam associated with the device.

[0214] For example, at least one satellite beam may be associated with at least one beam footprint.

[0215] For example, the at least one satellite beam may be associated with a plurality of satellite beams.

[0216] For example, the base station may transmit information relating to a distance threshold associated with a satellite beam associated with the device among the at least one satellite beam. For example, the satellite beam associated with the device among the at least one satellite beam may be determined based on a reference position of the at least one satellite beam and a position of the device being within a threshold.

[0217] For example, the information relating to the distance threshold associated with the satellite beam associated with the device among the at least one satellite beam may be received by the base station.

[0218] For example, the base station may transmit orbital information. For example, at least one of a TX space setting or an RX space setting may be determined based on the orbital information.

[0219] For example, the base station may transmit one system information block. For example, the one system information block may be received over multiple physical downlink shared channels.

[0220] For example, the subcarrier spacing associated with the synchronization signal block associated with at least one satellite beam may be set differently from the subcarrier spacing associated with the synchronization signal block associated with coreset 0.

[0221] For example, based on the satellite beam associated with the determined device, it may be moved from a previous satellite beam to the determined satellite beam.

[0222] For example, the base station may receive a configuration including information related to cell discontinuous transmission or information related to cell discontinuous reception. For example, cell discontinuous transmission or cell discontinuous reception may be independently configured for each of the at least one satellite beam.

[0223] The proposed method can be applied to devices according to various embodiments of the present disclosure. For example, first, the processor (202) of the base station (200) can control the transceiver (206) to transmit cell-related information including information related to at least one satellite beam to the device. For example, location information of the device can be obtained. For example, based on reference location information of the at least one satellite beam and the location information of the device, a satellite beam related to the device can be determined among the at least one satellite beam.

[0224] According to one embodiment of the present disclosure, a base station may be provided. For example, the base station may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the base station to: transmit, to a device, information related to a cell, the information including information related to at least one satellite beam. For example, location information of the device may be obtained. For example, based on reference location information of the at least one satellite beam and location information of the device, a satellite beam related to the device may be determined among the at least one satellite beam.

[0225] According to one embodiment of the present disclosure, a processing device configured to control a base station may be provided. For example, the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the base station to: transmit, to a device, information related to a cell, the information including information related to at least one satellite beam. For example, location information of the device may be obtained. For example, based on reference location information of the at least one satellite beam and location information of the device, a satellite beam related to the device may be determined among the at least one satellite beam.

[0226] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a base station to: transmit, to a device, information related to a cell, including information related to at least one satellite beam. For example, location information of the device may be obtained. For example, based on reference location information of the at least one satellite beam and the location information of the device, a satellite beam related to the device may be determined among the at least one satellite beam.

[0227] The various embodiments of the present disclosure may be combined with each other, and some descriptions, functions, procedures, proposals, methods and / or operations of the various embodiments may be omitted.

[0228] The above proposed method can be applied to the device described below. First, the processor (202) of the receiving terminal can set at least one partial bandwidth (e.g., BWP; bandwidth part). Then, the processor (202) of the receiving terminal can control the transceiver (206) of the receiving terminal to receive a physical channel related to terminal-to-terminal communication (e.g., SL communication) and / or a reference signal related to terminal-to-terminal communication (e.g., SL communication) from the transmitting terminal on at least one partial bandwidth (e.g., BWP).

[0229] Below, a description is given of devices to which various embodiments of the present disclosure can be applied.

[0230] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document may be applied to various fields requiring wireless communication / connectivity (e.g., 5G) between devices.

[0231] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0232] FIG. 15 illustrates a communication system (1) according to one embodiment of the present disclosure. The embodiment of FIG. 15 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0233] Referring to FIG. 15, a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone) and / or an Aerial Vehicle (AV) (e.g., an Advanced Air Mobility (AAM)). The XR device may include an Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) device, and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, etc. The portable device may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc. The home appliance may include a TV, a refrigerator, a washing machine, etc. The IoT device may include a sensor, a smart meter, etc. For example, a base station and a network may also be implemented as a wireless device, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0234] Here, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0235] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0236] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present disclosure.

[0237] FIG. 16 illustrates a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 16 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0238] Referring to FIG. 16, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 15.

[0239] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). Furthermore, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0240] A second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0241] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0242] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 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, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0243] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0244] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 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, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0245] Fig. 17 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of Fig. 17 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0246] Referring to FIG. 17, the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). Although not limited thereto, the operations / functions of FIG. 17 may be performed in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 16. The hardware elements of FIG. 17 may be implemented in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 16. For example, blocks 1010 to 1060 may be implemented in the processor (102, 202) of FIG. 16. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 16, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 16.

[0247] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 17. Here, the codeword is an encoded bit sequence of an information block. The information block can include a transport block (e.g., an UL-SCH transport block, a DL-SCH transport block). The wireless signal can be transmitted through various physical channels (e.g., a PUSCH or a PDSCH).

[0248] Specifically, the codeword can be converted into a bit sequence scrambled by a scrambler (1010). The scramble sequence used for scrambling is generated based on an initialization value, and the initialization value may include ID information of the wireless device, etc. The scrambled bit sequence can be modulated into a modulation symbol sequence by a modulator (1020). The modulation method may include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulation symbol sequence can be mapped to one or more transmission layers by a layer mapper (1030). The modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by a precoder (1040) (precoding). The output z of the precoder (1040) can be obtained by multiplying the output y of the layer mapper (1030) by a precoding matrix W of N*M. Here, N is the number of antenna ports, and M is the number of transmission layers. Here, the precoder (1040) can perform precoding after performing transform precoding (e.g., DFT transform) on complex modulation symbols. In addition, the precoder (1040) can perform precoding without performing transform precoding.

[0249] The resource mapper (1050) can map modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. The signal generator (1060) generates a wireless signal from the mapped modulation symbols, and the generated wireless signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) can include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0250] The signal processing process for receiving signals in a wireless device can be configured in reverse order of the signal processing process (1010 to 1060) of FIG. 17. For example, a wireless device (e.g., 100, 200 of FIG. 16) can receive wireless signals from the outside through an antenna port / transceiver. The received wireless signals can be converted into baseband signals through a signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Thereafter, the baseband signal can be restored to a codeword through a resource demapper process, a postcoding process, a demodulation process, and a descrambling process. The codewords can be restored to the original information blocks through decoding. Accordingly, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource de-mapper, a postcoder, a demodulator, a de-scrambler, and a decoder.

[0251] Figure 18 illustrates a wireless device according to an embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use case / service (see Figure 15). The embodiment of Figure 18 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0252] Referring to FIG. 18, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 16 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and additional elements (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 16. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 16. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (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 the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0253] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 15, 100a), a vehicle (Fig. 15, 100b-1, 100b-2), an XR device (Fig. 15, 100c), a portable device (Fig. 15, 100d), a home appliance (Fig. 15, 100e), an IoT device (Fig. 15, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 15, 400), a base station (Fig. 15, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0254] In FIG. 18, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be interconnected entirely via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and the first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0255] Below, the implementation example of Fig. 18 is described in more detail with reference to the drawings.

[0256] FIG. 19 illustrates a mobile device according to an embodiment of the present disclosure. The mobile device may include a smartphone, a smart pad, a wearable device (e.g., a smartwatch, smartglasses), or a portable computer (e.g., a laptop, etc.). The mobile device may be referred to as a Mobile Station (MS), a User Terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT). The embodiment of FIG. 19 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0257] Referring to FIG. 19, the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130 / 140 of FIG. 18, respectively.

[0258] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit (120) can control components of the mobile device (100) to perform various operations. The control unit (120) can include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / codes / commands required for operating the mobile device (100). In addition, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the mobile device (100) and can include a wired / wireless charging circuit, a battery, etc. The interface unit (140b) can support connection between the mobile device (100) and other external devices. The interface unit (140b) can include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can input or output video information / signals, audio information / signals, data, and / or information input from a user. The input / output unit (140c) may include a camera, a microphone, a user input unit, a display unit (140d), a speaker, and / or a haptic module.

[0259] For example, in the case of data communication, the input / output unit (140c) obtains information / signals (e.g., touch, text, voice, image, video) input by the user, and the obtained information / signals can be stored in the memory unit (130). The communication unit (110) converts the information / signals stored in the memory into wireless signals, and can directly transmit the converted wireless signals to other wireless devices or to a base station. In addition, the communication unit (110) can receive wireless signals from other wireless devices or base stations, and then restore the received wireless signals to the original information / signals. The restored information / signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, haptic) through the input / output unit (140c).

[0260] FIG. 20 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure. The vehicle or autonomous vehicle may be implemented as a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc. The embodiment of FIG. 20 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0261] Referring to FIG. 20, a vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving 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 a part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 of FIG. 18, respectively.

[0262] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), and servers. The control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations. The control unit (120) can include an ECU (Electronic Control Unit). The drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired / wireless charging circuit, a battery, etc. The sensor unit (140c) can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit (140c) may include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an incline sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit (140d) may implement a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.

[0263] For example, the communication unit (110) can receive map data, traffic information data, etc. from an external server. The autonomous driving unit (140d) can generate an autonomous driving route and driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can irregularly / periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles. In addition, during autonomous driving, the sensor unit (140c) can acquire vehicle status and surrounding environment information. The autonomous driving unit (140d) can update the autonomous driving route and driving plan based on newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving route, driving plan, etc. to the external server. External servers can predict traffic information data in advance using AI technology or other technologies based on information collected from vehicles or autonomous vehicles, and provide the predicted traffic information data to the vehicles or autonomous vehicles.

[0264] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In the method, A step of obtaining information related to a cell including information related to at least one satellite beam; A step of obtaining location information of the device; and A method comprising: determining a satellite beam associated with the device among the at least one satellite beam based on reference location information of the at least one satellite beam and location information of the device.

2. In paragraph 1, A method further comprising: reporting information related to the satellite beam associated with the device; 3. In paragraph 2, A method wherein the information related to the satellite beam associated with the device is reported to the base station.

4. In paragraph 1, A method wherein the information relating to the cell, including the information relating to at least one satellite beam, is received from a base station.

5. In paragraph 1, A method wherein at least one satellite beam is associated with at least one beam footprint.

6. In paragraph 1, A method wherein at least one satellite beam is associated with a plurality of satellite beams.

7. In paragraph 1, Further comprising: a step of obtaining information related to a distance threshold associated with the satellite beam associated with the device among the at least one satellite beam; A method wherein the satellite beam associated with the device among the at least one satellite beam is determined based on whether the reference position of the at least one satellite beam and the position of the device are within a threshold value.

8. In paragraph 7, A method wherein the information relating to the distance threshold associated with the satellite beam associated with the device among the at least one satellite beam is received by the base station.

9. In paragraph 1, Step of acquiring orbital information; and A method further comprising: a step of determining at least one of a TX space setting and an RX space setting based on the above orbital information.

10. In paragraph 1, further comprising the step of receiving one system information block; A method wherein the above one system information block is received through multiple physical downlink shared channels.

11. In paragraph 1, A method wherein the subcarrier spacing associated with the synchronization signal block associated with at least one satellite beam is set differently from the subcarrier spacing associated with the synchronization signal block associated with coreset 0.

12. In paragraph 1, A method further comprising: a step of moving from a previous satellite beam to the determined satellite beam based on the satellite beam associated with the determined device; 13. In paragraph 1, A step of obtaining a setting including information related to cell discontinuous transmission or information related to cell discontinuous reception; further comprising: A method wherein cell discontinuous transmission or cell discontinuous reception is independently established for each of said at least one satellite beam.

14. In the device, At least one transmitter / receiver; at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said device causes: Obtain information relating to a cell containing information relating to at least one satellite beam; Obtain location information of the device; and A device that determines a satellite beam associated with the device among the at least one satellite beam based on reference location information of the at least one satellite beam and location information of the device.

15. In a processing device set to control a device, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said device causes: Obtain information relating to a cell containing information relating to at least one satellite beam; Obtain location information of the device; and A processing device that determines a satellite beam associated with the device among the at least one satellite beam based on reference position information of the at least one satellite beam and position information of the device.

16. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the device to: Obtain information relating to a cell containing information relating to at least one satellite beam; Obtain location information of the device; and A non-transitory computer-readable storage medium for determining a satellite beam associated with the device among the at least one satellite beam based on reference position information of the at least one satellite beam and position information of the device.

17. In the method, comprising the step of transmitting to the device information relating to a cell including information relating to at least one satellite beam; The location information of the above device is obtained, A method wherein a satellite beam associated with the device is determined among the at least one satellite beam based on reference location information of the at least one satellite beam and location information of the device.

18. At the base station, At least one transmitter / receiver; at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said base station: Cause the device to transmit information relating to a cell containing information relating to at least one satellite beam; The location information of the above device is obtained, A base station, wherein a satellite beam associated with the device is determined among the at least one satellite beam based on reference location information of the at least one satellite beam and location information of the device.

19. In a processing device set to control a base station, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said base station: Cause the device to transmit information relating to a cell containing information relating to at least one satellite beam; The location information of the above device is obtained, A processing device, wherein a satellite beam related to the device is determined among the at least one satellite beam based on reference position information of the at least one satellite beam and position information of the device.

20. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the base station to: Cause the device to transmit information relating to a cell containing information relating to at least one satellite beam; The location information of the above device is obtained, A non-transitory computer-readable storage medium, wherein a satellite beam associated with the device is determined among the at least one satellite beam based on reference location information of the at least one satellite beam and location information of the device.

Images