WO2023210995A1 - 무선 통신 시스템에서 상향링크 송수신을 수행하는 방법 및 장치 - Google Patents
무선 통신 시스템에서 상향링크 송수신을 수행하는 방법 및 장치 Download PDFInfo
- Publication number
- WO2023210995A1 WO2023210995A1 PCT/KR2023/004507 KR2023004507W WO2023210995A1 WO 2023210995 A1 WO2023210995 A1 WO 2023210995A1 KR 2023004507 W KR2023004507 W KR 2023004507W WO 2023210995 A1 WO2023210995 A1 WO 2023210995A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal
- common
- specific
- uplink
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Definitions
- This disclosure relates to a wireless communication system, and more specifically to a method and device for performing uplink transmission and reception in a wireless communication system.
- Mobile communication systems were developed to provide voice services while ensuring user activity.
- the mobile communication system has expanded its scope to include not only voice but also data services.
- the explosive increase in traffic is causing a shortage of resources and users are demanding higher-speed services, so a more advanced mobile communication system is required. there is.
- next-generation mobile communication system The requirements for the next-generation mobile communication system are to support explosive data traffic, a dramatic increase in transmission rate per user, a greatly increased number of connected devices, very low end-to-end latency, and high energy efficiency.
- dual connectivity massive MIMO (Massive Multiple Input Multiple Output), full duplex (In-band Full Duplex), NOMA (Non-Orthogonal Multiple Access), and ultra-wideband (Super)
- massive MIMO Massive Multiple Input Multiple Output
- full duplex In-band Full Duplex
- NOMA Non-Orthogonal Multiple Access
- Super ultra-wideband
- the technical problem of the present disclosure is to provide a method and device for performing uplink transmission and reception in a wireless communication system.
- an additional technical task of the present disclosure is to provide a method and device for fixing a UE-specific TA and/or a common TA for PUSCH DM-RS bundling operation.
- an additional technical problem of the present disclosure is to provide a method and device for updating a terminal-specific TA and/or a common TA at a time corresponding to a specific TA update period, based on a specific TA update period being set/instructed. It is provided.
- an additional technical task of the present disclosure is to provide a method and device for defining an update of a common TA and/or a terminal-specific TA as a new event within the boundary or validity period of the validity duration.
- a method performed by a terminal in a wireless communication system includes first configuration information related to a non-terrestrial network (NTN) and at least one timing advance (TA) Receiving second setting information related to an update period from the base station; updating at least one of a common TA or a terminal-specific TA based on the first configuration information at a time point corresponding to the at least one TA update cycle; And based on at least one of the updated common TA or the terminal-specific TA, performing a first uplink repetitive transmission scheduled to be transmitted after the time of updating at least one of the common TA or the terminal-specific TA. It can be included.
- NTN non-terrestrial network
- TA timing advance
- a method performed by a base station in a wireless communication system includes first configuration information related to a non-terrestrial network (NTN) and at least one timing advance (TA). ) Transmitting second setting information related to the update period to the terminal; Transmitting information for scheduling uplink repetitive transmission to the terminal; And receiving, from the terminal, a first uplink repetitive transmission based on at least one of a common TA or a terminal-specific TA updated at a time point corresponding to the at least one TA update cycle through the first configuration information, and , the first uplink repetitive transmission may be scheduled to be transmitted after at least one of the common TA or the UE-specific TA is updated.
- NTN non-terrestrial network
- TA timing advance
- a method and device for performing uplink transmission and reception in a wireless communication system can be provided.
- a method and apparatus for fixing a UE-specific TA and/or a common TA for a PUSCH DM-RS bundling operation may be provided.
- a method and device for updating a terminal-specific TA and/or a common TA at a time corresponding to a specific TA update period based on a specific TA update period is set/instructed. may be provided.
- a method and apparatus may be provided for defining an update of a common TA and/or a terminal-specific TA as a new event within the boundary or validity period of the validity duration.
- FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.
- FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.
- FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied.
- FIG. 4 illustrates a physical resource block in a wireless communication system to which the present disclosure can be applied.
- FIG. 5 illustrates a slot structure in a wireless communication system to which the present disclosure can be applied.
- Figure 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission and reception method using them.
- Figure 7 shows an example of a wireless communication system supporting an unlicensed band applicable to the present disclosure.
- Figures 8 and 9 are diagrams for explaining NTN supported by a wireless communication system to which the present disclosure can be applied.
- FIG. 10 is a diagram for explaining a format of satellite orbit information according to an embodiment of the present disclosure.
- FIG. 11 is a diagram for explaining an uplink transmission operation of a terminal in a wireless communication system to which the present disclosure can be applied.
- FIG. 12 is a diagram for explaining an uplink reception operation of a base station in a wireless communication system to which the present disclosure can be applied.
- Figure 13 is a diagram for explaining the signaling procedure of the network side and the terminal according to an embodiment of the present disclosure.
- Figure 14 illustrates a block diagram of a wireless communication device according to an embodiment of the present disclosure.
- a component when a component is said to be “connected,” “coupled,” or “connected” to another component, this is not only a direct connection relationship, but also an indirect connection relationship where another component exists between them. It may also be included. Additionally, in this disclosure, the terms “comprise” or “having” specify the presence of a referenced feature, step, operation, element, and/or component, but may also specify the presence of one or more other features, steps, operations, elements, components, and/or components. It does not rule out the existence or addition of these groups.
- first”, second, etc. are used only for the purpose of distinguishing one component from another component and are not used to limit the components, and unless specifically mentioned, the terms There is no limitation on the order or importance between them. Accordingly, within the scope of the present disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and similarly, the second component in one embodiment may be referred to as a first component in another embodiment. It may also be called.
- This disclosure describes a wireless communication network or wireless communication system, and operations performed in the wireless communication network include controlling the network and transmitting or receiving signals at a device (e.g., a base station) in charge of the wireless communication network. It may be done in the process of receiving, or it may be done in the process of transmitting or receiving signals from a terminal connected to the wireless network to or between terminals.
- a device e.g., a base station
- transmitting or receiving a channel includes transmitting or receiving information or signals through the corresponding channel.
- transmitting a control channel means transmitting control information or signals through the control channel.
- transmitting a data channel means transmitting data information or signals through a data channel.
- downlink refers to communication from the base station to the terminal
- uplink refers to communication from the terminal to the base station
- DL downlink
- UL uplink
- the transmitter may be part of the base station and the receiver may be part of the terminal.
- the transmitter may be part of the terminal and the receiver may be part of the base station.
- the base station may be represented as a first communication device
- the terminal may be represented as a second communication device.
- a base station (BS) is a fixed station, Node B, evolved-NodeB (eNB), Next Generation NodeB (gNB), base transceiver system (BTS), access point (AP), and network (5G).
- eNB evolved-NodeB
- gNB Next Generation NodeB
- BTS base transceiver system
- AP access point
- 5G network
- the terminal may be fixed or mobile, and may include UE (User Equipment), MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), and AMS (Advanced Mobile).
- UE User Equipment
- MS Mobile Station
- UT user terminal
- MSS Mobile Subscriber Station
- SS Subscriber Station
- AMS Advanced Mobile
- MTC Machine-Type Communication
- M2M Machine-to-Machine
- D2D Device-to-Device
- vehicle RSU (road side unit)
- robot AI (Artificial Intelligence) module
- UAV Unmanned Aerial Vehicle
- AR Algmented Reality
- VR Virtual Reality
- CDMA can be implemented with wireless technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
- TDMA can be implemented with wireless technologies such as Global System for Mobile communications (GSM)/General Packet Radio Service (GPRS)/Enhanced Data Rates for GSM Evolution (EDGE).
- EDGE Enhanced Data Rates for GSM Evolution
- OFDMA can be implemented with wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA), etc.
- UTRA is part of the Universal Mobile Telecommunications System (UMTS).
- 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA
- LTE-A (Advanced)/LTE-A pro is an evolved version of 3GPP LTE
- 3GPP NR New Radio or New Radio Access Technology
- 3GPP LTE/LTE-A/LTE-A pro is an evolved version of 3GPP LTE/LTE-A/LTE-A pro.
- LTE refers to technology after 3GPP TS (Technical Specification) 36.xxx Release 8.
- LTE technology after 3GPP TS 36.xxx Release 10 is referred to as LTE-A
- LTE technology after 3GPP TS 36.xxx Release 13 is referred to as LTE-A pro
- 3GPP NR refers to technology after TS 38.xxx Release 15.
- LTE/NR may be referred to as a 3GPP system.
- “xxx” refers to the standard document detail number.
- LTE/NR can be collectively referred to as a 3GPP system.
- terms, abbreviations, etc. used in the description of the present disclosure reference may be made to matters described in standard documents published prior to the present disclosure. For example, you can refer to the following document:
- TS 36.211 Physical Channels and Modulation
- TS 36.212 Multiplexing and Channel Coding
- TS 36.213 Physical Layer Procedures
- TS 36.300 General Description
- TS 36.331 Radio Resource Control
- TS 38.211 physical channels and modulation
- TS 38.212 multiplexing and channel coding
- TS 38.213 physical layer procedures for control
- TS 38.214 physical layer procedures for data
- TS 38.300 Overall description of NR and NG-RAN (New Generation-Radio Access Network)
- TS 38.331 Radio Resource Control Protocol Specification
- channel state information - reference signal resource indicator channel state information - reference signal resource indicator
- Synchronization signal block (including primary synchronization signal (PSS: primary synchronization signal), secondary synchronization signal (SSS: secondary synchronization signal), and physical broadcast channel (PBCH: physical broadcast channel))
- PSS primary synchronization signal
- SSS secondary synchronization signal
- PBCH physical broadcast channel
- NR is an expression representing an example of 5G RAT.
- the new RAT system including NR uses OFDM transmission method or similar transmission method.
- the new RAT system may follow OFDM parameters that are different from those of LTE.
- the new RAT system follows the numerology of existing LTE/LTE-A but can support a larger system bandwidth (for example, 100 MHz).
- one cell may support multiple numerologies. In other words, terminals operating with different numerologies can coexist within one cell.
- Numerology corresponds to one subcarrier spacing in the frequency domain.
- different numerologies can be defined.
- FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure can be applied.
- NG-RAN is NG-RA (NG-Radio Access) user plane (i.e., new access stratum (AS) sublayer/packet data convergence protocol (PDCP)/radio link control (RLC)/MAC/ It consists of gNBs that provide PHY) and control plane (RRC) protocol termination for the UE.
- the gNBs are interconnected through the Xn interface.
- the gNB is also connected to NGC (New Generation Core) through the NG interface. More specifically, the gNB is connected to the Access and Mobility Management Function (AMF) through the N2 interface and to the User Plane Function (UPF) through the N3 interface.
- AMF Access and Mobility Management Function
- UPF User Plane Function
- FIG. 2 illustrates a frame structure in a wireless communication system to which the present disclosure can be applied.
- numerology can be defined by subcarrier spacing and cyclic prefix (CP) overhead.
- CP cyclic prefix
- multiple subcarrier spacing can be derived by scaling the basic (reference) subcarrier spacing by an integer N (or ⁇ ).
- N or ⁇
- the numerology used can be selected independently of the frequency band.
- various frame structures according to multiple numerologies can be supported.
- OFDM numerology and frame structures that can be considered in the NR system.
- Multiple OFDM numerologies supported in the NR system can be defined as Table 1 below.
- NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, if SCS is 15kHz, it covers a wide area in traditional cellular bands. Supports dense-urban, lower latency and wider carrier bandwidth when SCS is 30kHz/60kHz and phase when SCS is 60kHz or higher It supports a bandwidth greater than 24.25 GHz to overcome phase noise.
- the NR frequency band is defined as two types of frequency ranges (FR1 and FR2).
- FR1 and FR2 are as follows. It may be configured as shown in Table 2. Additionally, FR2 may mean millimeter wave (mmW).
- ⁇ f max 480 ⁇ 10 3 Hz
- N f 4096.
- slots are numbered in increasing order of n s ⁇ ⁇ 0,..., N slot subframe, ⁇ -1 ⁇ within a subframe, and within a radio frame. They are numbered in increasing order: n s,f ⁇ ⁇ 0,..., N slot frame, ⁇ -1 ⁇ .
- One slot consists of consecutive OFDM symbols of N symb slots , and N symb slots are determined according to CP.
- the start of slot n s ⁇ in a subframe is temporally aligned with the start of OFDM symbol n s ⁇ N symb slot in the same subframe. Not all terminals can transmit and receive at the same time, which means that not all OFDM symbols in a downlink slot or uplink slot can be used.
- Table 3 shows the number of OFDM symbols per slot (N symb slot ), the number of slots per wireless frame (N slot frame, ⁇ ), and the number of slots per subframe (N slot subframe, ⁇ ) in the general CP.
- Table 4 represents the number of OFDM symbols per slot, the number of slots per radio frame, and the number of slots per subframe in the extended CP.
- 1 subframe may include 4 slots.
- a mini-slot may contain 2, 4, or 7 symbols, or may contain more or fewer symbols.
- the antenna port Antenna port, resource grid, resource element, resource block, carrier part, etc. may be considered.
- the antenna port is defined so that a channel carrying a symbol on the antenna port can be inferred from a channel carrying another symbol on the same antenna port. If the large-scale properties of the channel carrying the symbols on one antenna port can be inferred from the channel carrying the symbols on the other antenna port, the two antenna ports are quasi co-located or QC/QCL. It can be said that they are in a quasi co-location relationship.
- the wide range characteristics include one or more of delay spread, Doppler spread, frequency shift, average received power, and received timing.
- FIG. 3 illustrates a resource grid in a wireless communication system to which the present disclosure can be applied.
- the resource grid is composed of N RB ⁇ N sc RB subcarriers in the frequency domain, and one subframe is composed of 14 ⁇ 2 ⁇ OFDM symbols, but is limited to this. It doesn't work.
- the transmitted signal is described by one or more resource grids consisting of N RB ⁇ N sc RB subcarriers and OFDM symbols of 2 ⁇ N symb ( ⁇ ) .
- N RB ⁇ ⁇ N RB max, ⁇ The N RB max, ⁇ represents the maximum transmission bandwidth, which may vary between uplink and downlink as well as numerologies.
- one resource grid can be set for each ⁇ and antenna port p.
- Each element of the resource grid for ⁇ and antenna port p is referred to as a resource element and is uniquely identified by an index pair (k,l').
- l' 0,...,2 ⁇ N symb ( ⁇ ) -1 is the symbol within the subframe. refers to the location of When referring to a resource element in a slot, the index pair (k,l) is used.
- l 0,...,N symb ⁇ -1.
- the resource element (k,l') for ⁇ and antenna port p corresponds to the complex value a k,l' (p, ⁇ ) .
- indices p and ⁇ may be dropped, resulting in the complex value a k,l' (p) or It can be a k,l' .
- Point A serves as a common reference point of the resource block grid and is obtained as follows.
- - offsetToPointA for primary cell (PCell: Primary Cell) downlink represents the frequency offset between point A and the lowest subcarrier of the lowest resource block overlapping with the SS/PBCH block used by the terminal for initial cell selection. It is expressed in resource block units assuming a 15kHz subcarrier spacing for FR1 and a 60kHz subcarrier spacing for FR2.
- - absoluteFrequencyPointA represents the frequency-position of point A expressed as in ARFCN (absolute radio-frequency channel number).
- Common resource blocks are numbered upward from 0 in the frequency domain for the subcarrier spacing setting ⁇ .
- the center of subcarrier 0 of common resource block 0 for the subcarrier interval setting ⁇ coincides with 'point A'.
- the relationship between the common resource block number n CRB ⁇ and the resource elements (k,l) for the subcarrier interval setting ⁇ is given as Equation 1 below.
- Physical resource blocks are numbered from 0 to N BWP,i size, ⁇ -1 within the bandwidth part (BWP), where i is the number of the BWP.
- BWP bandwidth part
- Equation 2 The relationship between physical resource block n PRB and common resource block n CRB in BWP i is given by Equation 2 below.
- N BWP,i start, ⁇ is the common resource block from which BWP starts relative to common resource block 0.
- Figure 4 illustrates a physical resource block in a wireless communication system to which the present disclosure can be applied.
- Figure 5 illustrates a slot structure in a wireless communication system to which the present disclosure can be applied.
- a slot includes a plurality of symbols in the time domain. For example, in the case of normal CP, one slot includes 7 symbols, but in the case of extended CP, one slot includes 6 symbols.
- a carrier wave includes a plurality of subcarriers in the frequency domain.
- RB Resource Block
- BWP Bandwidth Part
- a carrier wave may include up to N (e.g., 5) BWPs. Data communication is performed through an activated BWP, and only one BWP can be activated for one terminal.
- Each element in the resource grid is referred to as a resource element (RE), and one complex symbol can be mapped.
- RE resource element
- the NR system can support up to 400 MHz per component carrier (CC). If a terminal operating in such a wideband CC (wideband CC) always operates with the radio frequency (RF) chip for the entire CC turned on, terminal battery consumption may increase. Alternatively, when considering multiple use cases operating within one broadband CC (e.g., eMBB, URLLC, Mmtc, V2X, etc.), different numerology (e.g., subcarrier spacing, etc.) is supported for each frequency band within the CC. It can be. Alternatively, the maximum bandwidth capability may be different for each terminal.
- CC component carrier
- the base station can instruct the terminal to operate only in a part of the bandwidth rather than the entire bandwidth of the broadband CC, and the part of the bandwidth is defined as a bandwidth part (BWP) for convenience.
- BWP may be composed of consecutive RBs on the frequency axis and may correspond to one numerology (e.g., subcarrier interval, CP length, slot/mini-slot section).
- the base station can set multiple BWPs even within one CC set for the terminal. For example, in the PDCCH monitoring slot, a BWP that occupies a relatively small frequency domain may be set, and the PDSCH indicated by the PDCCH may be scheduled on a larger BWP. Alternatively, if UEs are concentrated in a specific BWP, some UEs can be set to other BWPs for load balancing. Alternatively, considering frequency domain inter-cell interference cancellation between neighboring cells, etc., a portion of the spectrum in the entire bandwidth can be excluded and both BWPs can be set within the same slot. That is, the base station can set at least one DL/UL BWP to a terminal associated with a broadband CC.
- the base station may activate at least one DL/UL BWP(s) among the DL/UL BWP(s) set at a specific time (by L1 signaling or MAC CE (Control Element) or RRC signaling, etc.). Additionally, the base station may indicate switching to another configured DL/UL BWP (by L1 signaling or MAC CE or RRC signaling, etc.). Alternatively, based on a timer, when the timer value expires, it may be switched to a designated DL/UL BWP. At this time, the activated DL/UL BWP is defined as an active DL/UL BWP.
- the terminal In situations such as when the terminal is performing the initial access process or before the RRC connection is set up, it may not be able to receive settings for the DL/UL BWP, so in these situations, the terminal This assumed DL/UL BWP is defined as the first active DL/UL BWP.
- Figure 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission and reception method using them.
- a terminal receives information from a base station through downlink, and the terminal transmits information to the base station through uplink.
- the information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type/purpose of the information they transmit and receive.
- the terminal When the terminal is turned on or enters a new cell, it performs an initial cell search task such as synchronizing with the base station (S601). To this end, the terminal receives a primary synchronization signal (PSS) and a secondary synchronization signal (PSS) from the base station to synchronize with the base station and obtain information such as a cell identifier (ID). You can. Afterwards, the terminal can receive broadcast information within the cell by receiving a physical broadcast channel (PBCH) from the base station. Meanwhile, the terminal can check the downlink channel status by receiving a downlink reference signal (DL RS) in the initial cell search stage.
- PSS primary synchronization signal
- PSS secondary synchronization signal
- ID cell identifier
- the terminal can receive broadcast information within the cell by receiving a physical broadcast channel (PBCH) from the base station. Meanwhile, the terminal can check the downlink channel status by receiving a downlink reference signal (DL RS) in the initial cell search stage.
- PBCH physical broadcast channel
- DL RS
- the terminal After completing the initial cell search, the terminal acquires more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) according to the information carried in the PDCCH. You can do it (S602).
- PDCCH physical downlink control channel
- PDSCH physical downlink shared channel
- the terminal may perform a random access procedure (RACH) to the base station (steps S603 to S606).
- RACH random access procedure
- the terminal may transmit a specific sequence as a preamble through a physical random access channel (PRACH) (S603 and S605) and receive a response message for the preamble through the PDCCH and the corresponding PDSCH ( S604 and S606).
- PRACH physical random access channel
- an additional contention resolution procedure can be performed.
- the terminal After performing the above-described procedure, the terminal performs PDCCH/PDSCH reception (S607) and physical uplink shared channel (PUSCH)/physical uplink control channel as a general uplink/downlink signal transmission procedure.
- control channel, PUCCH) transmission (S608) can be performed.
- the terminal receives downlink control information (DCI) through PDCCH.
- DCI includes control information such as resource allocation information for the terminal, and has different formats depending on the purpose of use.
- the control information that the terminal transmits to the base station through the uplink or that the terminal receives from the base station includes downlink/uplink ACK/NACK (Acknowledgement/Non-Acknowledgement) signals, CQI (Channel Quality Indicator), and PMI (Precoding Matrix). Indicator), RI (Rank Indicator), etc.
- the terminal can transmit control information such as the above-described CQI/PMI/RI through PUSCH and/or PUCCH.
- Table 5 shows an example of the DCI format in the NR system.
- DCI format uses 0_0 Scheduling of PUSCH within one cell 0_1 Scheduling of one or multiple PUSCHs in one cell, or instruction of cell group (CG: cell group) downlink feedback information to the UE.
- CG cell group
- 0_2 Scheduling of PUSCH within one cell 1_0 Scheduling of PDSCH within one DL cell 1_1 Scheduling of PDSCH within one cell 1_2 Scheduling of PDSCH within one cell
- DCI format 0_0, 0_1, and 0_2 include resource information related to scheduling of PUSCH (e.g., UL/SUL (Supplementary UL), frequency resource allocation, time resource allocation, frequency hopping, etc.), transport block ( transport block, TB) related information (e.g. MCS (Modulation Coding and Scheme), NDI (New Data Indicator), RV (Redundancy Version), etc.), HARQ (Hybrid - Automatic Repeat and request) related information (e.g.
- DCI Downlink Assignment Index
- PDSCH-HARQ feedback timing etc.
- multi-antenna related information e.g., DMRS sequence initialization information, antenna port, CSI request, etc.
- power control information e.g., PUSCH power control, etc.
- control information included in each DCI format may be predefined.
- DCI format 0_0 is used for scheduling PUSCH in one cell.
- the information included in DCI format 0_0 is cyclic redundancy check (CRC) by C-RNTI (cell radio network temporary identifier, Cell RNTI), CS-RNTI (Configured Scheduling RNTI), or MCS-C-RNTI (Modulation Coding Scheme Cell RNTI). ) is scrambled and transmitted.
- C-RNTI cell radio network temporary identifier, Cell RNTI
- CS-RNTI Configured Scheduling RNTI
- MCS-C-RNTI Modulation Coding Scheme Cell RNTI
- DCI format 0_1 is used to indicate scheduling of one or more PUSCHs in one cell or configure grant (CG) downlink feedback information to the UE.
- the information included in DCI format 0_1 is transmitted after CRC scrambling by C-RNTI or CS-RNTI or SP-CSI-RNTI (Semi-Persistent CSI RNTI) or MCS-C-RNTI.
- DCI format 0_2 is used for scheduling PUSCH in one cell.
- Information included in DCI format 0_2 is transmitted after CRC scrambling by C-RNTI or CS-RNTI or SP-CSI-RNTI or MCS-C-RNTI.
- DCI format 1_0, 1_1, and 1_2 are resource information related to scheduling of PDSCH (e.g., frequency resource allocation, time resource allocation, virtual resource block (VRB)-physical resource block (PRB) mapping, etc.), transport block (TB) related information (e.g. MCS, NDI, RV, etc.), HARQ related information (e.g. process number, DAI, PDSCH-HARQ feedback timing, etc.), multi-antenna related information (e.g. antenna port , transmission configuration indicator (TCI), sounding reference signal (SRS) request, etc.), PUCCH-related information (e.g., PUCCH power control, PUCCH resource indicator, etc.), and the control information included in each DCI format is Can be predefined.
- DCI format 1_0 is used for scheduling PDSCH in one DL cell.
- Information included in DCI format 1_0 is transmitted after CRC scrambling by C-RNTI, CS-RNTI, or MCS-C-RNTI.
- DCI format 1_1 is used for scheduling PDSCH in one cell.
- Information included in DCI format 1_1 is transmitted after CRC scrambling by C-RNTI, CS-RNTI, or MCS-C-RNTI.
- DCI format 1_2 is used for scheduling PDSCH in one cell.
- Information included in DCI format 1_2 is transmitted after CRC scrambling by C-RNTI, CS-RNTI, or MCS-C-RNTI.
- Wireless communication system supporting unlicensed band/shared spectrum
- Figure 7 shows an example of a wireless communication system supporting an unlicensed band applicable to the present disclosure.
- Figure 7 illustrates an unlicensed spectrum (NR-U) wireless communication system.
- NR-U unlicensed spectrum
- a cell operating in a licensed band is defined as an LCell, and the carrier of the LCell is defined as a (downlink/uplink) LCC.
- a cell operating in an unlicensed band is defined as UCell, and the carrier of UCell is defined as (downlink/uplink) UCC.
- the carrier/carrier-frequency of a cell may mean the operating frequency (eg, center frequency) of the cell.
- Cell/carrier e.g., component carrier (CC)
- CC component carrier
- the terminal and the base station when the terminal and the base station transmit and receive signals through the LCC and UCC with carrier aggregation (CA), the LCC is set to the primary CC (PCC) and the UCC is set to the SCC ( secondary CC). And, as shown in (b) of FIG. 7, the terminal and the base station can transmit and receive signals through one UCC or multiple carrier merged UCCs. In other words, the terminal and the base station can transmit and receive signals only through UCC(s) without LCC. For standalone operation, PRACH, PUCCH, PUSCH, SRS transmission, etc. may be supported in UCell.
- unlicensed bands may include specific frequency ranges (e.g., greater than 52.6 GHz up to 71 GHz) that are higher than existing frequency ranges (e.g., FR1 and FR2).
- the specific frequency range may be referred to as FR2-2 (in this case, the existing FR2 (i.e., 24250 MHz - 52600 MHz) may be referred to as FR2-1) or FR3.
- FR2-2 the existing FR2 (i.e., 24250 MHz - 52600 MHz) may be referred to as FR2-1) or FR3.
- FR2-1 existing FR2
- FR2-1 existing FR2
- FR3 i.e., 24250 MHz - 52600 MHz
- NTN non-terrestrial network
- NTN refers to a network or segment of a network configured to use radio resources (RF resources) on a satellite or unmanned aircraft system (UAS) platform.
- RF resources radio resources
- UAS unmanned aircraft system
- the NTN service uses base stations not on the ground, but on artificial satellites (e.g., geostationary-orbit, low-orbit, medium-orbit satellites, etc.), airplanes, and unmanned vehicles. This refers to providing wireless communication services to terminals by installing it on airships, drones, etc.
- NTN service may include NR NTN service and/or LTE NTN service.
- Terrestrial network (TN) service refers to providing wireless communication services to terminals by installing a base station on the ground.
- Frequency bands considered for NTN service are mainly the first frequency range (frequency range 1, FR1) (e.g., 410MHz to 7.125GHz), the 2 GHz band (S-band: 2-4 GHz), and the second frequency range. (FR2) (e.g., 24.25 GHz to 52.6 GHz) may be a downlink 20 GHz band and an uplink 30 GHz band (Ka-Band: 26.5 to 40 GHz). Additionally, NTN services may be supported in the frequency band between 7.125 GHz and 24.25 GHz, or in the frequency band above 52.6 GHz.
- FR1 frequency range
- S-band 2-4 GHz
- FR2 the second frequency range.
- FR2 e.g., 24.25 GHz to 52.6 GHz
- Ka-Band 26.5 to 40 GHz
- NTN services may be supported in the frequency band between 7.125 GHz and 24.25 GHz, or in the frequency band above 52.6 GHz.
- FIG. 8 is a diagram illustrating NTN supported by a wireless communication system to which the present disclosure can be applied.
- Figure 8(a) illustrates an NTN scenario based on a transparent payload
- Figure 8(b) illustrates an NTN scenario based on a regenerative payload.
- the NTN scenario based on transparent payload is a scenario in which an artificial satellite receives a payload from a terrestrial base station and transmits the payload to the terminal
- the NTN scenario based on regenerative payload is a scenario in which an artificial satellite receives a payload from a base station on the ground and transmits the payload to the terminal.
- gNB base station
- Geostationary earth orbiting (GEO) satellites are served by one or more satellite-gateways that are deployed in the coverage targeted by the satellite (e.g., regional or continental coverage).
- a terminal within a cell can be assumed to be served by only one satellite-gateway.
- Non-GEO satellites may be served successively by one or more satellite-gateways.
- the wireless communication system ensures service and feeder link continuity between serving satellite-gateways for a period of time sufficient to perform mobility anchoring and handover.
- a satellite capable of implementing either transparent or regenerative (including on-board processing) payloads.
- Satellite (or UAS platform) generated beams typically generate a plurality of beams in a service area bounded by the satellite (or UAS platform) field of view.
- the beam's footprint is generally elliptical.
- the field of view of a satellite (or UAS platform) is determined by its onboard antenna diagram and minimum elevation angle.
- Transparent Payload Radio frequency filtering, frequency conversion and amplification. Accordingly, the waveform signal repeated by the payload does not change.
- Regenerative payload radio frequency filtering, frequency conversion and amplification as well as demodulation/decoding, switching and/or routing, coding/modulation. This is effectively the same as having all or part of the base station functionality (e.g. gNB) on a satellite (or UAS platform).
- base station functionality e.g. gNB
- ISL Inter-satellite links
- the terminal is serviced by a satellite (or UAS platform) within the target service area.
- Table 6 illustrates types of satellites (or UAS platforms).
- GEO satellites and UAS are used to provide continental, regional or local services.
- constellations of low earth orbiting (LEO) and medium earth orbiting (MEO) are used to provide services in both the Northern and Southern Hemispheres.
- the constellation may provide global coverage including polar regions.
- appropriate orbital inclination, sufficient beam generated, and inter-satellite links may be required.
- a Highly Elliptical Orbiting (HEO) satellite system can also be considered.
- Transparent satellite Regenerative satellite GEO-based non-terrestrial access network Scenario A Scenario B LEO-based non-terrestrial access network: steerable beams Scenario C1 Scenario D1 LEO-based non-terrestrial access networks: The beams move with the satellite Scenario C2 Scenario D2
- scenario GEO-based non-terrestrial access networks (Scenarios A and B) LEO-based non-terrestrial access networks (Scenarios C and D) Orbit type A conceptual station that maintains a fixed position in altitude/azimuth relative to a given point on Earth. circle around the earth Altitude 35,786km 600km1,200km spectrum (Service link) At FR1 (e.g. 2 GHz) At FR2 (e.g.
- Reference 1 Each satellite can steer its beam to a fixed point on Earth using beamforming technology. This applies for a time corresponding to the visibility time of the satellite.
- Reference 2 The maximum delay variation within the beam (terminal fixed to the Earth (or ground)) is the minimum up and down for both the gateway and the terminal. Calculated based on angle (min elevation angle).
- Reference 3 The maximum differential delay within the beam is calculated based on the diameter of the maximum beam reception range at the lowest point (at nadir).
- the size of GEO's maximum beam reception range is determined based on the current state of GEO high throughput system technology, assuming a spot beam at the coverage edge (low altitude). do.
- the maximum differential delay at the cell level is calculated by considering the delay at the beam level for the largest beam size. When the beam size is small or medium, a cell may contain more than one beam. However, the cumulative differential delay of all beams within a cell does not exceed the maximum differential delay at the cell level in Table 8.
- the NTN-related description in this disclosure can be applied to NTN GEO scenarios and all NGSO (non-geostationary orbit) scenarios with a circular orbit with an altitude of 600 km or more.
- NGSO non-geostationary orbit
- NR frame structure NR frame structure, NTN, etc.
- NTN NTN
- the PRACH preamble transmitted by the terminal can be transmitted to the base station within the time duration of a specific RO (RACH occasion).
- the TA value for the terminal to transmit an uplink signal/channel may be composed of an initial TA value and a TA offset value.
- the initial TA value and TA offset value may be indicated by the base station as a TA value that can be expressed in the cell coverage range of the base station.
- the terminal can transmit the PRACH preamble to the base station.
- the terminal transmits an uplink signal/channel to the base station using the TA value (i.e., initial TA value) indicated through a response message (random access response (RAR)) to the preamble received from the base station.
- TA value i.e., initial TA value
- RAR random access response
- the terminal determines the location of the terminal through GNSS (global navigation satellite system) and determines the round trip delay (RTD) between the terminal and the satellite (or/ And, the UE-specific TA, which is the round trip time (RTT), can be calculated.
- GNSS global navigation satellite system
- RTD round trip delay
- the UE-specific TA which is the round trip time (RTT)
- scheduling offsets K_offset and k_mac may be defined to effectively operate an NTN system with a very long RTT.
- K_offset may mean the RTT of the uplink time synchronization reference point (RP).
- K_offset may mean the sum of the service link RTT and common TA (if indicated).
- k_mac may mean an offset indicating the RTT between the RP and the base station.
- the UE-specific TA can be set so that when the PRACH preamble is transmitted in the RO selected by the UE, the satellite (or base station (gNB)) can receive the PRACH preamble within the time period of the RO.
- the PRACH preamble may be transmitted to the satellite (or gNB) with a delay compared to the reference time of the RO.
- the initial TA value indicated by the RAR received from the base station may indicate the delayed value.
- common TA may refer to the RTD between a gNB (or reference point) on the ground and a satellite.
- the reference point may mean a place where downlink and uplink frame boundaries coincide.
- the common TA can be defined as something indicated by the base station to the terminal. If the reference point is in a satellite, the common TA may not be indicated, and if the reference point is in a gNB on the ground, the common TA may be used to compensate for the RTD between the gNB and the satellite.
- the TA value before transmitting message (Msg) 1 (e.g., PRACH preamble)/Msg A (e.g., PRACH preamble and PUSCH) can be set to UE-specific TA and common TA (if provided).
- the terminal-specific TA may be the RTD between the terminal and the satellite calculated by the terminal itself, as described above.
- FIG. 8 illustrates a method for calculating a TA value in a wireless communication system supporting NTN.
- Figure 9(a) illustrates a regenerative payload-based NTN scenario.
- the common TA (Tcom) (common to all terminals) is calculated as 2D0 (distance between satellite and reference signal)/c, and the terminal-specific differential TA (TUEx) for the xth terminal (UEx) is 2 ( It can be calculated as D1x-D0)/c.
- Total TA(Tfull) (or TA_total) can be calculated as 'Tcom + TUEx'.
- D1x may mean the distance between the satellite and UEx.
- c can represent the speed of light.
- Figure 9(b) illustrates a transparent payload-based NTN scenario.
- the common TA (Tcom) (common to all terminals) is calculated as 2(D01+D02)/c, and the terminal-specific differential TA (TUEx) for the xth terminal (UEx) is 2(D1x-D0). )/c can be calculated.
- Total TA(Tfull) can be calculated as 'Tcom + TUEx'.
- D01 may mean the distance between the satellite and the reference point
- D02 may mean the distance between the satellite and the base station located on the ground.
- the terminal may calculate/acquire a terminal-specific TA based on GNSS capabilities and base station indication/setting information (e.g., orbit information, effective area-related information, etc.).
- the terminal can calculate/acquire a common TA based on the common TA parameters indicated/set by the base station.
- the uplink frame number for transmission from the terminal is set before the corresponding downlink frame starts at the terminal. You can start.
- FIG. 10 is a diagram for explaining a format of satellite orbit information applicable to the present disclosure.
- Two orbital formats (e.g., position and velocity state vector ephemeris format and orbital parameter ephemeris format) may be supported in the NTN system.
- the position and velocity state vector trajectory format may consist of 17 bytes or less (e.g., 132 bits).
- the field size for position (x, y, z) (m) may be 78 bits, and the field size for velocity (vx, vy, vz) (m/s) may be 54 bits.
- the orbit parameter orbit format may consist of 21 bytes or less (e.g., 164 bits).
- the components of the orbital parameter orbital format are as follows.
- M0 M(t0) in epoch t0 [JD] (e.g. , 28 bits) [rad]
- the mean anomaly can also be expressed as a true anomaly (“v”).
- the perigee anomaly value represents the angle formed between the orbital periapsis and the orbiting object at any point in time, so it corresponds to the geometric angle. Accordingly, in Figure 12, the true periapsis anomaly is indicated, but the average periapsis anomaly is not indicated.
- the base station may transmit SIB or/and RRC signaling to the terminal to set/instruct what polarization information to use.
- the polarization type that the base station sets for the terminal may include linear, right-hand circular polarization (RHCP), left-hand circular polarization (LHCP), etc.
- Various channel/signal repetitive transmission operations defined to improve UL coverage of a basic wireless communication system can also be applied to the NR NTN system.
- a UL segment activation method and a joint channel estimation method considering a validity window i.e., DMRS bundling operation
- the joint channel estimation method refers to a method of jointly estimating the channel status of a plurality of communication links.
- the UE can perform a joint channel estimation method using DMRS received over a specific time unit (eg, aggregated slot, etc.).
- the present disclosure can be applied in combination with the contents described above (eg, NR frame structure, RACH procedure, U-band system, etc.).
- methods related to configuring PRACH transmission opportunities which will be described later, can be equally applied to the uplink signal transmission and reception method.
- uplink transmission through methods related to PRACH transmission opportunity configuration may be performed in an L-cell and/or U-cell defined in the NR system or U-Band system.
- FIG. 11 is a diagram for explaining an uplink transmission operation of a terminal in a wireless communication system to which the present disclosure can be applied.
- the wireless communication system in FIGS. 11 and 12 may be a non-terrestrial network (NTN) system, but is not limited thereto.
- NTN non-terrestrial network
- the uplink (repetitive) transmission may include at least one of physical random access channel (PRACH) (repetitive) transmission, PUCCH repetitive transmission, or PUSCH repetitive transmission.
- PRACH physical random access channel
- the terminal may receive first configuration information related to a non-terrestrial network (NTN) and second configuration information related to at least one timing advance (TA) update period from the base station. There is (S1110).
- NTN non-terrestrial network
- TA timing advance
- the terminal sends the first configuration information related to the non-terrestrial network (NTN) to higher layer signaling (e.g., SIB (e.g., 'SIB 19') and/or RRC signaling (e.g., 'NTN-Config ') can be received from the base station.
- NTN non-terrestrial network
- SIB e.g., 'SIB 19'
- RRC signaling e.g., 'NTN-Config '
- the first setting information includes orbit information related to a serving satellite, common TA parameters, and information related to the validity duration for at least one of the orbit information or the common TA parameters. It may include at least one of the following.
- the at least one TA update cycle refers to a cycle (or/and a time point corresponding to the cycle) during which the terminal can update at least one of the common TA or the terminal-specific TA.
- At least one TA update cycle may include a common-TA update cycle that can update a common TA and a UE-specific update cycle that can update a UE-specific TA. Additionally or alternatively, the at least one TA update cycle may consist of a single TA update cycle capable of updating the common TA and the UE-specific TA.
- the terminal may update at least one of the common TA or the terminal-specific TA based on the first configuration information at a time point corresponding to at least one TA update cycle (S1120).
- the UE updates the common TA at a time corresponding to the common TA update cycle using common TA parameters, etc., and the UE updates the UE-specific TA at a time corresponding to the UE-specific TA update cycle. You can.
- the UE can update the common TA according to the common TA update cycle and update the UE-specific TA according to the UE-specific TA update cycle.
- the terminal may update the common TA and the terminal-specific TA at a time point corresponding to the single TA update cycle based on the first configuration information.
- the UE can update the common TA and UE-specific TA according to the single TA update cycle.
- the terminal may perform a first uplink repetitive transmission scheduled to be transmitted after updating at least one of the common TA or the terminal-specific TA, based on at least one of the updated common TA or the terminal-specific TA ( S1130).
- the UE schedules/configures/activates the first uplink repetition i) after a time point corresponding to at least one TA update cycle and/or ii) after a time point when at least one of the common TA or the UE-specific TA is updated.
- An updated common TA or/and UE-specific TA may be applied for transmission.
- the first uplink repetitive transmission may be scheduled/set/activated by the base station to be completed before the timer set by information related to the effective period expires.
- At least one of the updated common TA or UE-specific TA may be maintained until performance of the first uplink repetitive transmission is completed.
- the total uplink repeat transmission scheduled/configured/activated by the base station may include a first uplink repeat transmission and a second uplink repeat transmission.
- the terminal drops the second uplink repetitive transmission.
- it may be performed based on at least one of the updated common TA or UE-specific TA.
- the operation of updating at least one of the common TA or the UE-specific TA at the boundary of the effective interval is performed by updating the PUCCH DM (demodulation)-RS (reference signal) ) Bundling (bundling or PUSC) It may be set/defined as a first event (or semi-static event) for performing at least one of DM-RS bundling.
- the operation of updating at least one of the common TA or the UE-specific TA within the effective period is a second event (or dynamic (or dynamic) for performing at least one of PUCCH DM-RS bundling or PUSCH DM-RS bundling. It can be set/defined as a dynamic) event.
- FIG. 12 is a diagram for explaining an uplink reception operation of a base station in a wireless communication system according to an embodiment of the present disclosure.
- the base station may transmit first configuration information related to the NTN and second configuration information related to at least one TA update cycle to the terminal (S1210).
- the base station may transmit information for scheduling (or setting and/or activating) uplink repetitive transmission to the terminal (S1220).
- the base station may transmit information for scheduling/configuring/activating all uplink repetitive transmissions to the terminal through RRC signaling, MAC CE, or/and DCI.
- the base station may receive a first uplink repetitive transmission from the terminal based on at least one of the common TA or the terminal-specific TA updated by the terminal (S1230).
- At least one of the common TA or the UE-specific TA may be performed by the UE at a time point corresponding to at least one TA update cycle.
- the first uplink repetitive transmission may be scheduled/configured/activated to be transmitted after at least one of the common TA or the UE-specific TA is updated.
- Embodiment 1 relates to a method for configuring a UL segment when repetitive transmission is performed in an NTN system.
- repetitive transmission may be defined/set/instructed.
- the common TA and/or UE-specific TA need to be changed/modified while repeated transmissions are performed.
- the UE may be defined/configured/instructed to update an open-loop TA (e.g., common TA and/or UE-specific TA) while performing repeated transmission (depending on UE implementation). You can.
- the UL segment introduced/defined in the IoT NTN may also be introduced/defined in the NR NTN, etc.
- a unit for setting/maintaining the same UL TA value may be defined as a UL (transmission) segment.
- the repetition number (i.e., the number/occasion of performing repeated transmission) may not be large.
- the base station may transmit information for modifying/updating the closed loop TA (i.e., N TA ) to the UE through MAC-CE/RRC signaling, etc. Accordingly, the common TA and/or the terminal-specific TA may not need to be updated while repeated transmission is performed.
- a (conditional) UL segment may be set as in at least one of Examples 1-1 to 1-3.
- Example 1-1 relates to a method of determining whether to apply a UL segment according to the number of repetitions of the UL signal/channel set/instructed by the base station.
- N the number of repetitions of a specific predefined UL signal/channel.
- N the number of repetitions of a specific predefined UL signal/channel.
- the specific value of the predefined number of repetitions for each UL signal/channel can be independently set/indicated.
- the UL segment may be set not to be applied.
- the terminal may be set not to update the terminal-specific TA and/or common TA while performing repeated transmission.
- the UL segment when the number of repetitions set/instructed by the base station is N or more, the UL segment may be set to be applied.
- the UE when performing repeated transmission, does not change the UE-specific TA and/or common TA during the UL segment (based on the UL segment value indicated from the base station), and changes the UE-specific TA and/or common TA before entering the next UL segment. Can be set/directed to update the common TA.
- Example 1-2 relates to a method of determining whether to apply a UL segment according to the UL slot counting type set/instructed by the base station (when transmitting PUSCH).
- the UL segment when a physical slot-based counting type is set/indicated, the UL segment may be set/defined so that it is not applied. At this time, the terminal may be configured not to update the terminal-specific TA and/or common TA while performing repeated transmission.
- a UL segment may be set/defined to be applied.
- the UE when performing repeated transmission, the UE does not change the UE-specific TA and/or common TA during the UL segment (based on the UL segment value indicated from the base station), and changes the UE-specific TA and/or common TA before entering the next UL segment. Can be set/directed to update the common TA.
- whether to set a UL segment may be determined similarly to operations in the available slot-based counting type and physical slot-based counting type.
- the UL segment may be set to apply.
- the UL segment may be set not to apply.
- counting may not be performed based on available slots but may be performed based on physical slots.
- Example 1-3 relates to a case where the base station does not provide higher layer signaling indicating the UL segment value. That is, in Examples 1-3-1 and 1-3-2 below, it is assumed that the terminal does not receive higher layer signaling indicating the UL segment value from the base station.
- the terminal may maintain (i.e., not update) the terminal-specific TA and/or common TA set before the first transmission (during repeated transmission). Additionally, the terminal may perform repeated transmission based on the maintained terminal-specific TA and/or common TA.
- the terminal may update the terminal-specific TA and/or common TA before each repeated transmission, and perform a transmission operation based on the total TA based on the updated terminal-specific TA and/or common TA. .
- a TA update period (update period) for each UE-specific TA and/or common TA (or one integrated TA) may be set/instructed for the UE.
- the terminal may update the terminal-specific TA and/or common TA according to the TA update cycle.
- the terminal may update the terminal-specific TA and/or common TA according to the TA update cycle set/indicated to a specific value. Accordingly, the base station can efficiently determine when the UE updates the UE-specific TA and/or common TA to perform DMRS bundling.
- a specific value e.g., N slots, etc.
- the terminal may apply the updated terminal-specific TA and/or common TA to repeated transmission performed after the update time/TA update period. That is, the terminal may perform repeated transmission after the update time/TA update period based on the updated terminal-specific TA and/or common TA.
- the terminal may calculate an appropriate terminal-specific TA and/or common TA in advance at each repeated transmission time.
- the terminal may calculate the overall TA value based on the terminal-specific TA and/or common TA value calculated in advance immediately before actual repeated transmission, and perform repeated transmission based on the overall TA value.
- the timer of the effective window is (re)started as additional information (e.g., ephemeris information or/and common TA parameters) is transmitted during repeated transmission, at that point (i.e., additional information
- additional information e.g., ephemeris information or/and common TA parameters
- the updated UE-specific TA and/or common TA can be applied to all TAs from the UL signal/channel to be transmitted after is received (or/and when the timer of the effective window (re)starts).
- the UE may perform repeated transmission based on the updated UE-specific TA and/or common TA.
- the terminal may determine that only repeated transmissions indicated within an existing effective window (i.e., a preset effective window) are valid. In addition, the terminal only performs repetitive transmission of the UL signal/channel set/indicated within the existing effective window, and repeatedly transmits the remaining UL signal/channel (i.e., UL signal/channel set/instructed after the existing effective window) can be dropped.
- an existing effective window i.e., a preset effective window
- the terminal only performs repetitive transmission of the UL signal/channel set/indicated within the existing effective window, and repeatedly transmits the remaining UL signal/channel (i.e., UL signal/channel set/instructed after the existing effective window) can be dropped.
- the method according to at least one of the above-described embodiments can be applied to all UL signals/channels. And, methods according to at least one of the above-described embodiments can be applied to each independent UL signal/channel.
- Embodiment 2 relates to a terminal operation method according to UL segment and effective window settings.
- the UL segment and effective window can be set independently of each other. Accordingly, the boundary of the UL segment and the boundary of the effective window may coincide or may be different from each other.
- Example 2-1 In Example 2-1, Example 2-2, and Example 2-3, operations for the terminal and base station according to the relationship between the boundary of the UL segment and the boundary of the effective window are described.
- the base station can set/instruct the terminal so that the boundary of the UL segment matches the boundary of the effective window.
- the terminal can expect that the UL segment boundary and the effective window boundary are always set/instructed to match.
- the boundary of the effective window can be set to the point at which the effective timer (re)starts as additional information is set/instructed by the base station. That is, the point at which the effective timer (re)starts can be set to the epoch time of the additional information.
- the subsequent UL segment may exist within the validity window corresponding to the (re)started validity timer.
- the terminal updates the terminal-specific TA and/or common TA based on the newly received additional information, and obtains the overall TA based on the updated terminal-specific TA and/or common TA (i.e., the updated terminal-specific TA and/or A common TA can be applied to all TAs.
- the terminal can apply the entire TA starting from the subsequent UL segment.
- the boundary of the UL segment is located in the middle of the effective window (eg, the UL segment ends within the middle of the effective window).
- the updated UE-specific TA and/or common TA based on previously set parameters i.e., common TA parameters and/or orbit information
- the entire TA can be set to apply to the subsequent UL segment. That is, the UE can perform repeated transmission by applying the entire TA in the subsequent UL segment.
- the boundary of the effective window is located in the middle of the UL segment (for example, the effective window ends within the middle of the UL segment).
- the expiration of the effective timer corresponding to the existing effective window is the day after all repeated transmissions in the corresponding UL segment are completed.
- the UE may not update the UE-specific TA and/or common TA until repeated UL signal/channel transmission within the corresponding UL segment is completed. That is, the UE may perform repeated transmission based on a UE-specific TA and/or a common TA that has not been updated.
- a valid timer corresponding to an existing valid window expires within the corresponding UL segment (regardless of whether the valid timer is restarted according to the epoch time by receiving additional information)
- at least one of the following options is used: The following operations may be performed by the terminal.
- the terminal may transmit UL signals/channels that can be transmitted before the expiration of the existing valid timer within the corresponding UL segment and drop the remaining UL signals/channels.
- the UE may drop UL signals/channels that can be transmitted before the expiration of the existing valid timer within the corresponding UL segment and update the UE-specific TA and/or common TA based on newly received additional information.
- the UE may transmit by applying the updated UE-specific TA and/or common TA to all TAs and applying all TAs to the remaining UL signals/channels.
- Option 3 The terminal compares the number of UL signals/channels that can be transmitted before the existing valid timer expires within the corresponding UL segment and the number of UL signals/channels that can be transmitted after the existing valid timer expires, and based on the comparison result So it can operate as either option 1 or option 2.
- the terminal identifies the larger of the number of UL signals/channels that can be transmitted before the existing valid timer expires within the corresponding UL segment and the number of UL signals/channels that can be transmitted after the existing valid timer expires, and identifies An operation can be performed according to the option associated with the UL signal/channel corresponding to the given value.
- the terminal operates according to option 1. can be performed.
- the UE may update the UE-specific TA and/or common TA based on additional information newly received from the subsequent UL segment, and apply the updated UE-specific TA and/or common TA to all TAs.
- the method according to at least one of the above-described embodiments can be applied to all UL signals/channels. And, methods according to at least one of the above-described embodiments can be applied to each independent UL signal/channel.
- the PRACH preamble and/or Msg. UL signals/channels such as 3 PUSCH can be defined/configured to be transmitted as option 1.
- UL signals/channels such as (normal) PUSCH and/or PUCCH can be defined/configured to operate like option 2.
- Embodiment 3 relates to a joint channel estimation method based on an effective window.
- a joint channel estimation method through DMRS bundling has been defined for NR CE (coverage enhancement).
- the UE may not change the UL TA while performing PUSCH repeated transmission.
- the UE is allowed to perform PUSCH repetitive transmission without changing the overall TA value (including common TA and/or UE-specific TA). Can be set/instructed/defined.
- an NTN-specific effective window can be defined in NR NTN.
- the UE may update the common TA and/or UE-specific TA based on the newly received additional information (i.e., common TA parameters and/or orbit information). .
- Example 3-1 Example 3-2, and Example 3-3, the operation of the terminal/base station for performing joint channel estimation based on the effective window will be described.
- Embodiment 3-1 relates to a method for setting an effective window and a time domain window (TDW) (e.g., set TDW, actual TDW).
- TDW time domain window
- the actual TDW may mean the time period in which the DMRS is actually transmitted
- the nominal TDW may mean the time period in which the DMRS is expected to be transmitted (based on configuration information received from the base station).
- the way the terminal/base station performs may differ depending on how the effective window and actual (or set) TDW are set.
- Method 1 The size (or boundary) of the effective window and the actual (or set) TDW may be set to have a specific relationship (predefined or/and set/instructed by the base station).
- the boundary of the effective window may be set to match the boundary of the actual (or set) TDW.
- the actual (or set) size of TDW may be set to be smaller than or equal to the effective window.
- the actual (or set) TDW size may be set as a divisor of the effective window size.
- the effective window size may be set as a multiple of the actual (or set) TDW size.
- Method 2 The effective window can be set independently regardless of the actual (or set) TDW. At this time, the terminal and base station may operate according to at least one of the options described later.
- Option 1 If the boundary of the effective window exists in the middle of the TDW set by the base station, the established TDW (regardless of terminal capability) can be divided into a plurality of actual TDWs based on the boundary of the effective window. .
- the set TDW can be divided into two actual TDWs.
- the updated common TA and/or UE-specific TA may be applied to the UL signal/channel to be transmitted in the second actual TDW restarted after the first configured TDW is terminated.
- Option 2 If the UE implementation configures/defines an open-loop TA (e.g., common TA, UE-specific TA) to be freely updateable while repetitive transmission is performed, the UE can update the corresponding TA within the actual (or configured) TDW. Can be set/defined not to update for open loop TA.
- an open-loop TA e.g., common TA, UE-specific TA
- the base station may be configured not to instruct the terminal to perform closed-loop TA updates. As another example, even if the base station instructs the terminal to update the closed loop TA, the terminal may ignore this.
- Embodiment 3-2 relates to the operation of the base station and the terminal when the UL segment is defined in the NR NTN.
- the embodiments related to the effective window described above can also be applied to the UL segment. That is, in embodiments or/and options related to the effective window, the effective window may be replaced with a UL segment.
- the UL segment is added based on the time when the set (or actual) TDW ends and (re)starts. It can be defined as: Additionally or alternatively, the DMRS bundling operation may be configured to be supported only within PUSCHs to be repeatedly transmitted within a specific UL segment.
- the terminal when the base station does not explicitly indicate the configured TDW to the terminal, the terminal may be set/defined to use min (number of repetitions, maximum duration) as the default value. Accordingly, in the NR NTN, the UL segment size value may be set to be used as the maximum time interval value, or a value smaller than the UL segment size may be set to be used as the maximum time interval value.
- the UE when the UE updates the common TA and/or the UE-specific TA, the UE may be configured to stop the configured (or actual) TDW and report it to the base station.
- the operation of the UE updating and reporting the common TA and/or UE-specific TA may be set/defined to be performed in a time period corresponding to the UL segment boundary.
- whether to apply the UL segment may be determined according to DMRS bundling configuration information set/instructed by the base station.
- the base station when configured to perform DMRS bundling, it may be configured/defined not to apply the UL segment, and the terminal may be configured not to update the terminal-specific and/or common TA during repeated transmission.
- the base station when configured not to perform DMRS bundling, it may be configured/defined to apply the UL segment.
- the UE when performing repeated transmission, the UE does not change the UE-specific TA and/or common TA during the UL segment (based on the UL segment value indicated from the base station), and changes the UE-specific TA and/or common TA before entering the next UL segment. Can be set/directed to update the common TA.
- inter-slot bundling frequency hopping and UL segments may have a specific relationship. That is, the hopping size set/indicated by the base station may have a specific relationship with the UL segment size (or effective section size) and a preset (or indicated by the base station).
- the size of inter-slot bundling frequency hopping may be set/defined to be smaller than or equal to the UL segment size (or effective section size). At this time, the size of inter-slot bundling frequency hopping may be set/defined as a divisor of the UL segment size (or effective section size). As another example, the UL segment size (or effective section size) may be set/defined as a multiple of the inter-slot bundling frequency hopping size.
- TA update operations performed by the terminal at different times can be defined as different types of events.
- a common TA and/or a UE-specific TA update operation performed by the UE at the boundary of the effective period may be defined as one event.
- the event can be defined/set as a semi-static event.
- a common TA and/or a UE-specific TA update operation performed by the UE within the effective period rather than the boundary of the effective period may be defined/set as one event.
- the event since the base station cannot know when the terminal will update the common TA and/or the terminal-specific TA, the event may be set as a dynamic event.
- the method according to at least one of the above-described embodiments can be applied to all UL signals/channels. And, methods according to at least one of the above-described embodiments can be applied to each independent UL signal/channel.
- the above-described embodiments can also be set/applied to other UL signals/channels such as PUSCH/PUCCH. Additionally, the above-described embodiments may also be included as one of the implementation methods of the present disclosure. Additionally, the above-described embodiments may be implemented independently, but may also be implemented in the form of a combination (or merge) of some embodiments. Information on whether the above-described embodiments are applicable (or information on the rules of the above-described embodiments) is defined so that the base station informs the terminal through a predefined signal (e.g., a physical layer signal or a higher layer signal). It can be. Upper layers may include one or more of the following functional layers, for example, MAC, RLC, PDCP, RRC, and SDAP.
- Figure 13 is a diagram for explaining the signaling procedure of the network side and the terminal according to an embodiment of the present disclosure.
- Example 13 shows examples of the present disclosure described above (e.g., Example 1, Example 1-1, Example 1-2, Example 1-3, Example 1-3-1, Example 1-3) -2, Example 2, Example 2-1, Example 2-2, Example 2-3, Example 3, Example 3-1, Example 3-2, Example 3-3 or detailed examples thereof Shows an example of signaling between the network side and the terminal (UE) in an M-TRP situation where a combination of one or more of the following can be applied.
- the UE/network side is an example and can be replaced with various devices as described with reference to FIG. 14.
- FIG. 13 is for convenience of explanation and does not limit the scope of the present disclosure. Additionally, some step(s) shown in FIG. 13 may be omitted depending on the situation and/or settings. Additionally, in the operation of the network side/UE in FIG. 13, the above-described uplink transmission/reception operation, M-TRP-related operation, etc. may be referenced or used.
- the network side may be one base station including multiple TRPs, or may be one cell including multiple TRPs.
- the network side may include a plurality of remote radio heads (RRH)/remote radio units (RRU).
- RRH remote radio heads
- RRU remote radio units
- ideal/non-ideal backhaul may be set between TRP 1 and TRP 2, which constitute the network side.
- the following description is based on multiple TRPs, but it can be equally extended and applied to transmission through multiple panels/cells, and can also be extended and applied to transmission through multiple RRHs/RRUs, etc.
- TRP refers to a panel, an antenna array, a cell (e.g., a macro cell/small cell/ It can be applied instead of expressions such as (pico cell, etc.), TP (transmission point), base station (base station, gNB, etc.).
- TRPs may be classified according to information about the CORESET group (or CORESET pool) (e.g., CORESET index, ID).
- one terminal is configured to transmit and receive with multiple TRPs (or cells)
- this may mean that multiple CORESET groups (or CORESET pools) are configured for one terminal.
- Configuration of such a CORESET group (or CORESET pool) may be performed through higher layer signaling (e.g., RRC signaling, etc.).
- a base station may refer to a general term for objects that transmit and receive data with a terminal.
- the base station may be a concept that includes one or more Transmission Points (TPs), one or more Transmission and Reception Points (TRPs), etc.
- TPs Transmission Points
- TRPs Transmission and Reception Points
- the TP and/or TRP may include a base station panel, a transmission and reception unit, etc.
- the terminal can receive configuration information from the base station (S105).
- the configuration information may be NTN-related configuration information (e.g., NTN-config)/configuration for uplink transmission and reception described in the above-described embodiments (e.g., each embodiment or a combination of one or more of its detailed examples). It may include information (e.g., PUCCH-config, PUSCH-config, and/or PRACH-related configuration information, etc.).
- the configuration information includes information related to at least one TA update cycle (e.g., information for configuring a single TA update cycle, information for configuring each of the common TA and UE-specific TA update cycles, etc.) It can be included.
- the configuration information may be transmitted through higher layer (eg, SIB, RRC signaling, or/and MAC CE) signaling.
- higher layer eg, SIB, RRC signaling, or/and MAC CE
- the operation of the terminal (100 or 200 in FIG. 14) in step S105 described above to receive the configuration information from the base station (200 or 100 in FIG. 14) can be implemented by the device in FIG. 14, which will be described below. there is.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104, etc. to receive the configuration information, and one or more transceivers 106 may receive the configuration information from the network side. can receive.
- the terminal may update the terminal-specific TA and/or common TA based on the configuration information (S110).
- the UE may update the UE-specific TA and/or common TA at a time point corresponding to at least one TA update cycle.
- At least one TA update cycle for updating the UE-specific TA and/or common TA may be at the boundary of the effective interval or within the effective interval.
- step S110 the operation of the UE (100 or 200 in FIG. 14) in step S110 described above to update the UE-specific TA and/or common TA may be implemented by the device of FIG. 14 below.
- one or more processors 102 may control one or more memories 104, etc. to update a terminal-specific TA and/or a common TA.
- the terminal can perform uplink repetitive transmission (S115). Specifically, the base station may transmit information for scheduling/configuring/activating uplink repetitive transmission to the terminal. The terminal can perform uplink repetitive transmission based on the information received from the base station.
- the terminal may perform uplink repetitive transmission based on the updated terminal-specific TA and/or common TA.
- the UE may send an updated UE-specific TA and/or common TA for uplink transmission scheduled to be transmitted after a point corresponding to the TA update cycle or/and after a UE-specific TA and/or common TA update point. It can be applied.
- the operation in which the terminal (100 or 200 in FIG. 14) performs uplink repetitive transmission in step S115 described above can be implemented by the device in FIG. 14 below.
- one or more processors 102 may control one or more memories 104, etc. to transmit the uplink data/channel.
- signaling and embodiments of the above-described base station/terminal may be implemented by the device to be described with reference to FIG. 14.
- the base station may correspond to the first device 100
- the terminal may correspond to the second device 200, and vice versa may be considered in some cases.
- the signaling and operation of the base station/terminal described above may be processed by one or more processors (e.g., 102, 202) of FIG. 14.
- the signaling and operation of the above-described base station/terminal include instructions/for driving at least one processor (e.g., 102, 202) of FIG. 14. It may be stored in a memory (e.g., one or more memories (e.g., 104, 204) of FIG. 14) in the form of a program (e.g., instruction, executable code).
- Figure 14 illustrates a block diagram of a wireless communication device according to an embodiment of the present disclosure.
- the first device 100 and the second device 200 may transmit and receive wireless signals through various wireless access technologies (eg, LTE, NR).
- various wireless access technologies eg, LTE, NR.
- the first device 100 includes one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and/or one or more antennas 108.
- Processor 102 controls memory 104 and/or transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure.
- 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 through the transceiver 106. Additionally, the processor 102 may receive a wireless signal including the second information/signal through 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, memory 104 may perform some or all of the processes controlled by processor 102 or instructions for performing the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure. Software code containing them can be stored.
- the processor 102 and memory 104 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
- Transceiver 106 may be coupled to processor 102 and may transmit and/or receive wireless signals via one or more antennas 108. Transceiver 106 may include a transmitter and/or receiver. The transceiver 106 can be used interchangeably with an RF (Radio Frequency) unit.
- a device may mean a communication modem/circuit/chip.
- the second device 200 includes one or more processors 202, one or more memories 204, and may additionally include one or more transceivers 206 and/or one or more antennas 208.
- Processor 202 controls memory 204 and/or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure.
- the processor 202 may process the information in the memory 204 to generate third information/signal and then transmit a wireless signal including the third information/signal through the transceiver 206.
- the processor 202 may receive a wireless signal including the fourth information/signal through the transceiver 206 and then store information obtained from signal processing of the fourth information/signal 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, memory 204 may perform some or all of the processes controlled by processor 202 or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure. Software code containing them can be stored.
- the processor 202 and memory 204 may be part of a communication modem/circuit/chip designed to implement wireless communication technology (eg, LTE, NR).
- Transceiver 206 may be coupled to processor 202 and may transmit and/or receive wireless signals via one or more antennas 208. Transceiver 206 may include a transmitter and/or receiver. Transceiver 206 may be used interchangeably with an RF unit.
- a device may mean a communication modem/circuit/chip.
- one or more protocol layers may be implemented by one or more processors 102, 202.
- 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, suggestions, methods, and/or operational flowcharts disclosed in this disclosure. can be created.
- PDUs Protocol Data Units
- SDUs Service Data Units
- One or more processors 102, 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure.
- One or more processors 102, 202 may process signals (e.g., baseband signals) containing PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and/or methods disclosed in this disclosure. It can be generated and provided to one or more transceivers (106, 206).
- One or more processors 102, 202 may receive signals (e.g., baseband signals) from one or more transceivers 106, 206 and may use the descriptions, functions, procedures, suggestions, methods, and/or methods disclosed in this disclosure.
- PDU, SDU, message, control information, data or information can be obtained according to the operation flow charts.
- One or more processors 102, 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer.
- One or more processors 102, 202 may be implemented by hardware, firmware, software, or a combination thereof.
- ASICs Application Specific Integrated Circuits
- DSPs Digital Signal Processors
- DSPDs Digital Signal Processing Devices
- PLDs Programmable Logic Devices
- FPGAs Field Programmable Gate Arrays
- the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in this disclosure may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc.
- Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure may be included in one or more processors (102, 202) or stored in one or more memories (104, 204). It may be driven by the above processors 102 and 202.
- the descriptions, functions, procedures, suggestions, methods, and/or operational flowcharts disclosed in this disclosure may be implemented using firmware or software in the form of codes, instructions, and/or sets of instructions.
- One or more memories 104, 204 may be connected to one or more processors 102, 202 and may store various types of data, signals, messages, information, programs, codes, instructions, and/or instructions.
- One or more memories 104, 204 may consist of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media, and/or combinations thereof.
- One or more memories 104, 204 may be located internal to and/or external to one or more processors 102, 202. Additionally, one or more memories 104, 204 may be connected to one or more processors 102, 202 through various technologies, such as wired or wireless connections.
- One or more transceivers 106 and 206 may transmit user data, control information, wireless signals/channels, etc. mentioned in the methods and/or operation flowcharts of the present disclosure to one or more other devices.
- One or more transceivers 106, 206 may receive user data, control information, wireless signals/channels, etc. referred to in the descriptions, functions, procedures, suggestions, methods and/or operational flow charts, etc. disclosed in this disclosure from one or more other devices. there is.
- one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and may transmit and receive wireless signals.
- one or more processors 102, 202 may 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. In addition, one or more transceivers (106, 206) may be connected to one or more antennas (108, 208), and one or more transceivers (106, 206) may be connected to the one or more antennas (108, 208) according to the description and functions disclosed in the present disclosure. , may be set to transmit and receive user data, control information, wireless signals/channels, etc.
- the one or more antennas may be a plurality of physical antennas or a plurality of logical antennas (eg, antenna ports).
- One or more transceivers (106, 206) process the received user data, control information, wireless signals/channels, etc. using one or more processors (102, 202), and convert the received wireless signals/channels, etc. from the RF band signal. It can be converted to a baseband signal.
- One or more transceivers (106, 206) may convert user data, control information, wireless signals/channels, etc. processed using one or more processors (102, 202) from baseband signals to RF band signals.
- one or more transceivers 106, 206 may comprise (analog) oscillators and/or filters.
- the scope of the present disclosure is software or machine-executable instructions (e.g., operating system, application, firmware, program, etc.) that cause operations according to the methods of various embodiments to be executed on a device or computer, and such software or It includes non-transitory computer-readable medium in which instructions, etc. are stored and can be executed on a device or computer. Instructions that may be used to program a processing system to perform the features described in this disclosure may be stored on/in a storage medium or computer-readable storage medium and may be viewed using a computer program product including such storage medium. Features described in the disclosure may be implemented.
- Storage media may include, but are not limited to, high-speed random access memory such as DRAM, SRAM, DDR RAM, or other random access solid state memory devices, one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or It may include non-volatile memory, such as other non-volatile solid state storage devices.
- Memory optionally includes one or more storage devices located remotely from the processor(s).
- the memory, or alternatively the non-volatile memory device(s) within the memory includes a non-transitory computer-readable storage medium.
- Features described in this disclosure may be stored on any one of a machine-readable medium to control the hardware of a processing system and to enable the processing system to interact with other mechanisms utilizing results according to embodiments of the present disclosure. May be integrated into software and/or firmware.
- Such software or firmware may include, but is not limited to, application code, device drivers, operating systems, and execution environments/containers.
- the wireless communication technology implemented in the devices 100 and 200 of the present disclosure may include Narrowband Internet of Things for low-power communication as well as LTE, NR, and 6G.
- NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented in standards such as LTE Cat NB1 and/or LTE Cat NB2, and is limited to the above-mentioned names. no.
- the wireless communication technology implemented in the devices 100 and 200 of the present disclosure may perform communication based on LTE-M technology.
- LTE-M technology may be an example of LPWAN technology, and may be called various names such as enhanced Machine Type Communication (eMTC).
- eMTC enhanced Machine Type Communication
- LTE-M technologies include 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. It can be implemented in at least one of various standards such as Type Communication, and/or 7) LTE M, and is not limited to the above-mentioned names.
- the wireless communication technology implemented in the devices 100 and 200 of the present disclosure may include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication. It may include one, and is not limited to the above-mentioned names.
- ZigBee technology can create personal area networks (PAN) related to small/low-power digital communications based on various standards such as IEEE 802.15.4, and can be called by various names.
- PAN personal area networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
| μ | Δf=2μ·15 [kHz] | CP |
| 0 | 15 | 일반(Normal) |
| 1 | 30 | 일반 |
| 2 | 60 | 일반, 확장(Extended) |
| 3 | 120 | 일반 |
| 4 | 240 | 일반 |
| 주파수 범위 지정(Frequency Range designation) | 해당 주파수 범위(Corresponding frequency range) | 서브캐리어 간격(Subcarrier Spacing) |
| FR1 | 410MHz - 7125MHz | 15, 30, 60kHz |
| FR2 | 24250MHz - 52600MHz | 60, 120, 240kHz |
| μ | Nsymb slot | Nslot frame,μ | Nslot subframe,μ |
| 0 | 14 | 10 | 1 |
| 1 | 14 | 20 | 2 |
| 2 | 14 | 40 | 4 |
| 3 | 14 | 80 | 8 |
| 4 | 14 | 160 | 16 |
| μ | Nsymb slot | Nslot frame,μ | Nslot subframe,μ |
| 2 | 12 | 40 | 4 |
| DCI 포맷 | 활용 |
| 0_0 | 하나의 셀 내 PUSCH의 스케줄링 |
| 0_1 | 하나의 셀 내 하나 또는 다중 PUSCH의 스케줄링, 또는 UE에게 셀 그룹(CG: cell group) 하향링크 피드백 정보의 지시 |
| 0_2 | 하나의 셀 내 PUSCH의 스케줄링 |
| 1_0 | 하나의 DL 셀 내 PDSCH의 스케줄링 |
| 1_1 | 하나의 셀 내 PDSCH의 스케줄링 |
| 1_2 | 하나의 셀 내 PDSCH의 스케줄링 |
| 플랫폼 | 고도 범위 | 궤도(Orbit) | 일반적인 빔 풋프린트 크기 |
| 저-지구 궤도 위성 | 300-1500km | 지구 주위로 원형(Circular around the earth) | 100 - 1000 km |
| 중-지구 궤도 위성 | 7000-25000 km | 100 - 1000 km | |
| 정지 지구 궤도 위성 | 35,786km | 주어진 지구 지점에 대한 고도/방위각으로 고정된 위치를 유지하는 개념적 스테이션(notional station) | 200 - 3500 km |
| UAS 플랫폼 (HAPS 포함) | 8-50km (20 km for HAPS) | 5 - 200 km | |
| 고(high) 타원형 궤도 위성 | 400-50000 km | 지구 주위로 타원형(Elliptical around the earth) | 200 - 3500 km |
| 트랜스패런트 위성 |
리제너레이티브 위성 |
|
| GEO 기반 비-지상 액세스 네트워크 | 시나리오 A | 시나리오 B |
| LEO 기반 비-지상 액세스 네트워크:조정가능한(steerable) 빔들 | 시나리오 C1 | 시나리오 D1 |
| LEO 기반 비-지상 액세스 네트워크: 해당 빔들은 위성과 함께 움직임 |
시나리오 C2 | 시나리오 D2 |
| 시나리오 | GEO 기반 비-지상 액세스 네트워크 (시나리오 A 및 B) | LEO 기반 비-지상 액세스 네트워크 (시나리오 C 및 D) |
| 궤도 타입 | 주어진 지구 지점에 대한 고도/방위각으로 고정된 위치를 유지하는 개념적 스테이션 | 지구 주위로 원형 |
| 고도 | 35,786km | 600km1,200km |
| 스펙트럼 (서비스 링크) |
FR1에서 (예로, 2 GHz) FR2에서 (예로, DL 20 GHz, UL 30 GHz) |
|
| 최대 채널 대역폭 능력 (서비스 링크) | FR1에서 30 MHz FR2에서 1 GHz |
|
| 페이로드 | 시나리오 A : 트랜스패런트(무선 주파수 기능만 포함) 시나리오 B: 리제너레이티브(RAN 기능의 전부 또는 일부를 포함) |
시나리오 C: 트랜스패런트(무선 주파수 기능만 포함) 시나리오 D: 리제너레이티브(RAN 기능의 전부 또는 일부를 포함) |
| 위성 간 링크(Inter-Satellite link) | No | 시나리오 C: No시나리오 D: Yes/No (두 케이스 모두 가능.) |
| 지구-고정 빔(Earth-fixed beams) | Yes | 시나리오 C1: Yes (조정가능한 빔들)(참조 1),시나리오 C2: No (해당 빔들은 위성과 같이 움직임) 시나리오 D1: Yes (조정가능한 빔들)(참조 1), 시나리오 D2: No (해당 빔들은 위성과 같이 움직임) |
| 상하각(elevation angle)과 관계없는 최대 빔 풋 프린트 사이즈(edge-to-edge) | 3500km (참조 5) | 1000km |
| 위성 게이트웨이 및 단말 모두에 대한 최소 상하각 | 서비스 링크에 대한 10° 피더 링크에 대한 10° |
서비스 링크에 대한 10° 피더 링크에 대한 10° |
| 최소 상하각에서 위성과 단말 사이의 최대 거리 | 40,581 km | 1,932 km (600km 고도) 3,131 km (1,200km 고도) |
| 최대 라운드 트립 지연(전파 지연(propagation delay)만) | 시나리오 A: 541.46 ms (서비스 및 피더 링크)시나리오 B: 270.73 ms (서비스 링크만) | 시나리오 C: (트랜스패런트 페이로드: 서비스 및 피더 링크) - 25.77 ms (600km) - 41.77 ms (1200km) 시나리오 D: (리제너레이티브 페이로드: 서비스 링크만) - 12.89 ms (600km) - 20.89 ms (1200km) |
| 셀 내 최대 차동(differential) 지연(참조 6) | 10.3ms | 600km 및 1200km 각각의 경우, 3.12 ms 및 3.18 ms |
| 최대 도플러 천이(Max Doppler shift) (지구 고정 단말) | 0.93ppm | 24 ppm (600km)21 ppm (1200km) |
| 최대 도플러 천이 변화(variation)(지구 고정 단말) | 0.000 045ppm/s | 0.27ppm/s (600km)0.13ppm/s (1200km) |
| 지구 상에서 단말의 움직임 | 1200km/h (예로, 항공기) | 500km/h (예로, 고속 열차),가능한 1200km/h (예로, 항공기) |
| 단말 안테나 유형 | 무지향성 안테나(선형 편파), 0dBi로 가정 지향성 안테나(원 편파(circular polarization)에서 최대 60cm 상당 조리개 직경) |
|
| 단말 전송(Tx) 전력 | 무지향성 안테나: 최대 200mW의 UE 전력 클래스 3지향성 안테나: 최대 20W | |
| 단말 노이즈 수치 | 무지향성 안테나: 7dB지향성 안테나: 1.2dB | |
| 서비스 링크 | 3GPP에서 정의된 링크 | |
| 피더 링크 | 3GPP 또는 비-3GPP에서 정의된 무선 인터페이스 | 3GPP 또는 비-3GPP에서 정의된 무선 인터페이스 |
Claims (16)
- 무선 통신 시스템에서 단말에 의해 수행하는 방법에 있어서, 상기 방법은:비-지상 네트워크(non-terrestrial network, NTN)와 관련된 제1 설정 정보 및 적어도 하나의 타이밍 어드밴스(timing advance, TA) 업데이트 주기(update period)와 관련된 제2 설정 정보를 기지국으로부터 수신하는 단계;상기 제1 설정 정보에 기초하여 공통(common) TA 또는 단말-특정(specific) TA 중의 적어도 하나를 상기 적어도 하나의 TA 업데이트 주기에 대응되는 시점에서 업데이트하는 단계; 및상기 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초하여, 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나를 업데이트한 시점 이후에 전송되도록 스케줄링된 제1 상향링크 반복 전송을 수행하는 단계를 포함하는, 방법.
- 제1항에 있어서,상기 적어도 하나의 TA 업데이트 주기는, 공통 TA 업데이트 주기 및 단말-특정 TA 업데이트 주기를 포함하고,상기 제1 설정 정보에 기초하여:상기 공통 TA는 상기 공통 TA 업데이트 주기에 대응되는 시점에서 업데이트되고,상기 단말-특정 TA는 상기 단말-특정 TA 주기에 대응되는 시점에서 업데이트되는, 방법.
- 제1항에 있어서,단일 TA 업데이트 주기에 대응되는 시점에서 상기 제1 설정 정보에 기초하여 상기 공통 TA 및 단말-특정 TA가 업데이트되는, 방법.
- 제1항에 있어서,상기 제1 설정 정보는, i) 서빙 위성(serving satellite)과 관련된 궤도 정보(Ephemeris information), ii) 공통 TA 파라미터, 및 iii) 상기 궤도 정보 또는 상기 공통 TA 파라미터 중의 적어도 하나에 대한 유효 구간(validity duration)과 관련된 정보를 포함하는, 방법.
- 제4항에 있어서,상기 제1 상향링크 반복 전송은, 상기 유효 구간과 관련된 정보에 의해 설정된 타이머가 만료되기 전에 완료되도록 상기 기지국에 의해 스케줄링되는, 방법.
- 제4항에 있어서,상기 기지국에 의해 스케줄링된 전체 상향링크 반복 전송은, 상기 제1 상향링크 반복 전송 및 제2 상향링크 반복 전송을 포함하고,상기 제2 상향링크 반복 전송이 상기 유효 구간과 관련된 정보에 의해 설정된 타이머가 만료된 후에 수행되도록 상기 기지국에 의해 스케줄링됨에 기반하여, 상기 제2 상향링크 반복 전송은 드롭(drop)되거나, 상기 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초하여 수행되는, 방법.
- 제4항에 있어서,상기 유효 구간의 경계에서 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나가 업데이트되는 동작은, 물리 상향링크 제어 채널(physical uplink control channel, PUCCH) DM(demodulation)-RS(reference signal) 번들링(bundling) 또는 물리 상향링크 공유 채널(physical uplink shared channel, PUSCH) DM-RS 번들링 중의 적어도 하나를 수행하기 위한 제1 이벤트로 설정되는, 방법.
- 제4항에 있어서,상기 유효 구간 내에서 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나가 업데이트되는 동작은, PUCCH DM-RS 번들링 또는 PUSCH DM-RS 번들링 중의 적어도 하나를 수행하기 위한 제2 이벤트로 설정되는, 방법.
- 제1항에 있어서,상기 제1 상향링크 반복 전송의 수행이 완료될 때까지 상기 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나가 유지되는, 방법.
- 제1항에 있어서,상기 상향링크 반복 전송은, 물리 랜덤 액세스 채널(physical random access channel, PRACH) 반복 전송, PUCCH 반복 전송, 또는 PUSCH 반복 전송 중의 적어도 하나를 포함하는, 방법.
- 제1항에 있어서,상기 무선 통신 시스템은, 비-지상 네트워크(non-terrestrial network, NTN) 시스템인, 방법.
- 무선 통신 시스템에서 동작하는 단말에 있어서, 상기 단말은:하나 이상의 송수신기(transceiver); 및상기 하나 이상의 송수신기와 연결된 하나 이상의 프로세서를 포함하고,상기 하나 이상의 프로세서는:비-지상 네트워크(non-terrestrial network, NTN)와 관련된 제1 설정 정보 및 적어도 하나의 타이밍 어드밴스(timing advance, TA) 업데이트 주기(update period)와 관련된 제2 설정 정보를 기지국으로부터 상기 하나 이상의 송수신기를 통해 수신하고;상기 제1 설정 정보에 기초하여 공통(common) TA 또는 단말-특정(specific) TA 중의 적어도 하나를 상기 적어도 하나의 TA 업데이트 주기에 대응되는 시점에서 업데이트하고; 및상기 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초하여, 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나를 업데이트한 시점 이후에 전송되도록 스케줄링된 제1 상향링크 반복 전송을 수행하도록 설정되는, 단말.
- 무선 통신 시스템에서 기지국이 상향링크 수신을 수행하는 방법에 있어서, 상기 방법은:비-지상 네트워크(non-terrestrial network, NTN)와 관련된 제1 설정 정보 및 적어도 하나의 타이밍 어드밴스(timing advance, TA) 업데이트 주기(update period)와 관련된 제2 설정 정보를 단말로 전송하는 단계;상향링크 반복 전송을 스케줄링하기 위한 정보를 상기 단말로 전송하는 단계; 및상기 제1 설정 정보를 통해 상기 적어도 하나의 TA 업데이트 주기에 대응되는 시점에서 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초한 제1 상향링크 반복 전송을 상기 단말로부터 수신하는 단계를 포함하고,상기 제1 상향링크 반복 전송은 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나를 업데이트한 시점 이후에 전송되도록 스케줄링되는, 방법.
- 무선 통신 시스템에서 동작하는 기지국에 있어서, 상기 기지국은:하나 이상의 송수신기(transceiver); 및상기 하나 이상의 송수신기와 연결된 하나 이상의 프로세서를 포함하고,상기 하나 이상의 프로세서는:비-지상 네트워크(non-terrestrial network, NTN)와 관련된 제1 설정 정보 및 적어도 하나의 타이밍 어드밴스(timing advance, TA) 업데이트 주기(update period)와 관련된 제2 설정 정보를 단말로 상기 하나 이상의 송수신기를 통해 전송하고;상향링크 반복 전송을 스케줄링하기 위한 정보를 상기 단말로 상기 하나 이상의 송수신기를 통해 전송하고; 및상기 제1 설정 정보를 통해 상기 적어도 하나의 TA 업데이트 주기에 대응되는 시점에서 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초한 제1 상향링크 반복 전송을 상기 단말로부터 상기 하나 이상의 송수신기를 통해 수신하도록 설정되고,상기 제1 상향링크 반복 전송은 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나를 업데이트한 시점 이후에 전송되도록 스케줄링되는, 기지국.
- 무선 통신 시스템에서 상향링크 전송을 수행하기 위해 단말을 제어하도록 설정되는 프로세싱 장치에 있어서, 상기 프로세싱 장치는:하나 이상의 프로세서; 및상기 하나 이상의 프로세서에 동작 가능하게 연결되고, 상기 하나 이상의 프로세서에 의해 실행됨에 기반하여, 동작들을 수행하는 명령(instruction)들을 저장하는 하나 이상의 컴퓨터 메모리를 포함하며,상기 동작들은:비-지상 네트워크(non-terrestrial network, NTN)와 관련된 제1 설정 정보 및 적어도 하나의 타이밍 어드밴스(timing advance, TA) 업데이트 주기(update period)와 관련된 제2 설정 정보를 기지국으로부터 수신하는 동작;상기 제1 설정 정보에 기초하여 공통(common) TA 또는 단말-특정(specific) TA 중의 적어도 하나를 상기 적어도 하나의 TA 업데이트 주기에 대응되는 시점에서 업데이트하는 동작; 및상기 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초하여, 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나를 업데이트한 시점 이후에 전송되도록 스케줄링된 제1 상향링크 반복 전송을 수행하는 동작을 포함하는, 프로세싱 장치.
- 하나 이상의 명령을 저장하는 하나 이상의 비-일시적(non-transitory) 컴퓨터 판독가능 매체로서,상기 하나 이상의 명령은 하나 이상의 프로세서에 의해서 실행되어, 무선 통신 시스템에서 동작하는 장치가:비-지상 네트워크(non-terrestrial network, NTN)와 관련된 제1 설정 정보 및 적어도 하나의 타이밍 어드밴스(timing advance, TA) 업데이트 주기(update period)와 관련된 제2 설정 정보를 기지국으로부터 수신하고;상기 제1 설정 정보에 기초하여 공통(common) TA 또는 단말-특정(specific) TA 중의 적어도 하나를 상기 적어도 하나의 TA 업데이트 주기에 대응되는 시점에서 업데이트하고; 및상기 업데이트된 공통 TA 또는 단말-특정 TA 중의 적어도 하나에 기초하여, 상기 공통 TA 또는 단말-특정 TA 중의 적어도 하나를 업데이트한 시점 이후에 전송되도록 스케줄링된 제1 상향링크 반복 전송을 수행하도록 제어되는, 컴퓨터 판독가능 매체.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23796644.5A EP4518459A4 (en) | 2022-04-27 | 2023-04-04 | METHOD AND DEVICE FOR TRANSMITTING AND RECEPTING UPLINK IN A WIRELESS COMMUNICATION SYSTEM |
| CN202380036637.3A CN119213831A (zh) | 2022-04-27 | 2023-04-04 | 用于无线通信系统中的上行链路发送和接收的方法和装置 |
| US18/859,086 US20250280412A1 (en) | 2022-04-27 | 2023-04-04 | Method and device for uplink transmission and reception in wireless communication system |
| KR1020247038659A KR20250003914A (ko) | 2022-04-27 | 2023-04-04 | 무선 통신 시스템에서 상향링크 송수신을 수행하는 방법 및 장치 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220052399 | 2022-04-27 | ||
| KR10-2022-0052399 | 2022-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023210995A1 true WO2023210995A1 (ko) | 2023-11-02 |
Family
ID=88519278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/004507 Ceased WO2023210995A1 (ko) | 2022-04-27 | 2023-04-04 | 무선 통신 시스템에서 상향링크 송수신을 수행하는 방법 및 장치 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250280412A1 (ko) |
| EP (1) | EP4518459A4 (ko) |
| KR (1) | KR20250003914A (ko) |
| CN (1) | CN119213831A (ko) |
| WO (1) | WO2023210995A1 (ko) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210126669A (ko) * | 2019-02-14 | 2021-10-20 | 다탕 모바일 커뮤니케이션즈 이큅먼트 코포레이션 리미티드 | 타이밍 어드밴스를 결정하기 위한 방법 및 장치 |
| US20210360556A1 (en) * | 2019-02-01 | 2021-11-18 | Huawei Technologies Co., Ltd. | Timing Advance Update Method and Device |
| US20210392597A1 (en) * | 2019-02-23 | 2021-12-16 | Huawei Technologies Co., Ltd. | Timing advance update method, terminal, and base station |
| CN114007184A (zh) * | 2020-07-13 | 2022-02-01 | 北京三星通信技术研究有限公司 | 定时信息的确认方法和设备 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022086216A1 (en) * | 2020-10-21 | 2022-04-28 | Samsung Electronics Co., Ltd. | User equipment and base station in wireless communication system, and methods performed by the same |
-
2023
- 2023-04-04 KR KR1020247038659A patent/KR20250003914A/ko active Pending
- 2023-04-04 EP EP23796644.5A patent/EP4518459A4/en active Pending
- 2023-04-04 WO PCT/KR2023/004507 patent/WO2023210995A1/ko not_active Ceased
- 2023-04-04 US US18/859,086 patent/US20250280412A1/en active Pending
- 2023-04-04 CN CN202380036637.3A patent/CN119213831A/zh active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210360556A1 (en) * | 2019-02-01 | 2021-11-18 | Huawei Technologies Co., Ltd. | Timing Advance Update Method and Device |
| KR20210126669A (ko) * | 2019-02-14 | 2021-10-20 | 다탕 모바일 커뮤니케이션즈 이큅먼트 코포레이션 리미티드 | 타이밍 어드밴스를 결정하기 위한 방법 및 장치 |
| US20210392597A1 (en) * | 2019-02-23 | 2021-12-16 | Huawei Technologies Co., Ltd. | Timing advance update method, terminal, and base station |
| CN114007184A (zh) * | 2020-07-13 | 2022-02-01 | 北京三星通信技术研究有限公司 | 定时信息的确认方法和设备 |
Non-Patent Citations (2)
| Title |
|---|
| ERICSSON: "[Pre117-e][NTN][101] RRC open issues", 3GPP DRAFT; R2-2203154, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Electronic; 20220201, 16 February 2022 (2022-02-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052118257 * |
| See also references of EP4518459A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4518459A1 (en) | 2025-03-05 |
| EP4518459A4 (en) | 2026-04-22 |
| US20250280412A1 (en) | 2025-09-04 |
| KR20250003914A (ko) | 2025-01-07 |
| CN119213831A (zh) | 2024-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022215901A1 (ko) | 무선 통신 시스템에서 통신을 수행하는 방법 및 장치 | |
| WO2022154456A1 (ko) | 무선 통신 시스템에서 상향링크 송수신 방법 및 장치 | |
| WO2022005263A1 (ko) | 무선 통신 시스템에서 단말이 다운링크 신호를 수신하는 방법 및 이를 위한 장치 | |
| WO2022154559A1 (ko) | 무선 통신 시스템에서 단말이 업링크 신호를 전송하는 방법 및 이를 위한 장치 | |
| WO2022031004A1 (ko) | 무선 통신 시스템에서 단말이 편파 정보에 기반하여 rach를 전송하는 방법 및 이를 위한 장치 | |
| WO2022060014A1 (ko) | 무선 통신 시스템에서 빔 보고 방법 및 장치 | |
| WO2022025590A1 (ko) | 무선 통신 시스템에서 상향링크 송수신 방법 및 장치 | |
| WO2022211577A1 (ko) | 무선 통신 시스템에서 하향링크-상향링크 송수신 방법 및 장치 | |
| WO2022005109A1 (ko) | 무선 통신 시스템에서 상향링크 송수신 방법 및 장치 | |
| WO2022031103A1 (ko) | 무선 통신 시스템에서 무선 신호 송수신 방법 및 장치 | |
| WO2022092893A1 (ko) | 통신 시스템에서 동기화 신호 송수신 방법 및 장치 | |
| WO2022231403A1 (en) | Method and apparatus for accessing base station in satellite communication system | |
| WO2022031012A1 (ko) | 무선 통신 시스템에서 ntn이 편파 정보에 기반하여 다운링크 신호를 전송하는 방법 및 이를 위한 장치 | |
| WO2022154624A1 (ko) | 무선 통신 시스템에서 단말이 피드백 신호를 전송하는 방법 및 이를 위한 장치 | |
| WO2022005114A1 (ko) | 무선 통신 시스템에서 상향링크 채널 송수신 방법 및 장치 | |
| WO2022260364A1 (ko) | 무선 통신 시스템에서 상향링크 송수신 방법 및 장치 | |
| WO2022164297A1 (ko) | 무선 통신 시스템에서 상향링크 송수신 방법 및 장치 | |
| WO2022031112A1 (ko) | 무선 통신 시스템에서 단말이 업링크 신호의 전송 전력을 결정 방법 및 이를 위한 장치 | |
| WO2022154615A2 (ko) | 무선 통신 시스템에서 단말이 harq 프로세스의 유효성을 평가하는 방법 및 이를 위한 장치 | |
| WO2023177167A1 (ko) | 무선 통신 시스템에서 상향링크 송수신을 수행하는 방법 및 장치 | |
| WO2022030978A1 (ko) | 무선 통신 시스템에서 무선 신호 송수신 방법 및 장치 | |
| WO2021210889A1 (ko) | 무선 통신 시스템에서 pdsch 송수신 방법 및 장치 | |
| WO2021201586A1 (ko) | 무선 통신 시스템에서 신호를 송수신하는 방법 및 장치 | |
| WO2021172903A1 (ko) | 무선 통신 시스템에서 채널 상태 정보 송수신 방법 및 장치 | |
| WO2021206389A1 (ko) | 무선 통신 시스템에서 빔 연계 상태 기반 상향링크/하향링크 송수신 방법 및 장치 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23796644 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18859086 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380036637.3 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 20247038659 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023796644 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023796644 Country of ref document: EP Effective date: 20241127 |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380036637.3 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 18859086 Country of ref document: US |
