WO2023080728A1 - 무선 통신 시스템에서 하이브리드 자동 재송 요구-확인응답 정보의 송신 또는 수신 방법 및 장치 - Google Patents
무선 통신 시스템에서 하이브리드 자동 재송 요구-확인응답 정보의 송신 또는 수신 방법 및 장치 Download PDFInfo
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
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- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
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- 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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
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- 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
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- 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
- H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
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- 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
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0093—Point-to-multipoint
Definitions
- the present disclosure relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting or receiving hybrid automatic repeat request (HARQ)-acknowledgment (ACK) information in a wireless communication system.
- HARQ hybrid automatic repeat request
- ACK acknowledgenowledgment
- Mobile communication systems have been developed to provide voice services while ensuring user activity.
- the mobile communication system has expanded its scope to data services as well as voice.
- the explosive increase in traffic causes a shortage of resources and users demand higher-speed services, so a more advanced mobile communication system is required. there is.
- next-generation mobile communication system The requirements of the next-generation mobile communication system are to support explosive data traffic, drastic increase in transmission rate per user, significantly increased number of connected devices, very low end-to-end latency, and high energy efficiency.
- Dual Connectivity Massive MIMO (Massive Multiple Input Multiple Output), In-band Full Duplex, Non-Orthogonal Multiple Access (NOMA), Super Wideband Wideband) support, various technologies such as device networking (Device Networking) are being studied.
- Massive MIMO Massive Multiple Input Multiple Output
- NOMA Non-Orthogonal Multiple Access
- Super Wideband Wideband various technologies such as device networking (Device Networking) are being studied.
- a technical problem of the present disclosure is to provide a method and apparatus for multiplexing and transmitting or receiving a plurality of HARQ-ACK information in a NACK-only based reporting mode in a wireless communication system.
- An additional technical problem of the present disclosure is a candidate resource mapped to HARQ-ACK information, a drop of some HARQ-ACK information, or another reporting mode for a plurality of HARQ-ACK information in a NACK-only based reporting mode in a wireless communication system.
- a method for transmitting HARQ-ACK information by a terminal in a wireless communication system includes generating N (N>1) HARQ-ACK information bits related to a second HARQ-ACK reporting mode; and in one physical uplink control channel (PUCCH), one PUCCH resource among a set of PUCCH resources based on a first method according to a first HARQ-ACK reporting mode or the value of the N HARQ-ACK information bits. and transmitting HARQ-ACK information to a network by applying one of the selected second methods, and either the first method or the second method may be applied based on settings by the network.
- N N>1
- PUCCH physical uplink control channel
- a method for receiving hybrid automatic repeat request (HARQ)-acknowledgment (ACK) information by a base station includes one or more multicast DCI formats or one or more multicast physical downlink shared channels ( Transmitting one or more of the PDSCH) to the terminal; And for N (N>1) HARQ-ACK information bits related to the second HARQ-ACK reporting mode generated based on one or more of the one or more DCI formats or the one or more PDSCHs, a first HARQ-ACK report HARQ-ACK information to which one of the first method according to the mode or the second method of selecting one PUCCH resource from among the PUCCH resource set based on the value of the N HARQ-ACK information bits is applied, Receiving from the terminal on a link control channel (PUCCH), and either the first method or the second method may be applied based on settings by the base station.
- PUCCH link control channel
- a method and apparatus for multiplexing and transmitting or receiving a plurality of HARQ-ACK information in a NACK-only based reporting mode in a wireless communication system may be provided.
- HARQ-ACK information in NACK-only based reporting mode in a wireless communication system candidate resources mapped to HARQ-ACK information, drops of some HARQ-ACK information, or HARQ-ACK in other reporting modes
- a method and apparatus for transmitting or receiving multiplexed HARQ-ACK information based on one or more of conversion into information may be provided.
- FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure may 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 may be applied.
- FIG. 4 illustrates a physical resource block in a wireless communication system to which the present disclosure may be applied.
- FIG. 5 illustrates a slot structure in a wireless communication system to which the present disclosure may be applied.
- FIG. 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission/reception method using them.
- FIG. 7 exemplarily shows an overlapping situation of HARQ-ACK information in a NACK-only based reporting mode to which the present disclosure can be applied.
- FIG. 8 is a diagram for explaining a HARQ-ACK transmission method of a terminal according to an embodiment of the present disclosure.
- FIG. 9 is a diagram for explaining a HARQ-ACK receiving method of a base station according to an embodiment of the present disclosure.
- FIG. 10 is a diagram for explaining a signaling procedure of a network side and a terminal according to an embodiment of the present disclosure.
- FIG. 11 illustrates a block configuration diagram of a wireless communication device according to an embodiment of the present disclosure.
- first and second are used only for the purpose of distinguishing one component from another component and are not used to limit the components, unless otherwise specified. The order or importance among them is not limited. 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, a second component in one embodiment may be referred to as a first component in another embodiment. can also be called
- the present disclosure describes a wireless communication network or wireless communication system, and operations performed in the wireless communication network control the network and transmit or receive signals in a device (for example, a base station) in charge of the wireless communication network. It can be done in the process of receiving (receive) or in the process of transmitting or receiving signals from a terminal coupled to the wireless network to or between terminals.
- a device for example, a base station
- transmitting or receiving a channel includes the meaning of transmitting or receiving information or a signal through a corresponding channel.
- transmitting a control channel means transmitting control information or a signal through the control channel.
- transmitting a data channel means transmitting data information or a signal through the data channel.
- downlink means communication from a base station to a terminal
- uplink means communication from a terminal to a base station.
- a transmitter may be part of a base station and a receiver may be part of a terminal.
- a transmitter may be a part of a terminal and a receiver may be a part of a base station.
- a base station may be expressed as a first communication device
- a terminal may be expressed as a second communication device.
- a base station includes a fixed station, a Node B, an evolved-NodeB (eNB), a Next Generation NodeB (gNB), a base transceiver system (BTS), an access point (AP), and a network (5G Network), AI (Artificial Intelligence) system/module, RSU (road side unit), robot, drone (UAV: Unmanned Aerial Vehicle), AR (Augmented Reality) device, VR (Virtual Reality) device, etc.
- AI Artificial Intelligence
- RSU road side unit
- robot UAV: Unmanned Aerial Vehicle
- AR Algmented Reality
- VR Virtual Reality
- a terminal may be fixed or mobile, and a user equipment (UE), a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), and an advanced mobile (AMS) Station), WT (Wireless terminal), MTC (Machine-Type Communication) device, M2M (Machine-to-Machine) device, D2D (Device-to-Device) device, vehicle, RSU (road side unit), It can be replaced with terms such as robot, AI (Artificial Intelligence) module, drone (UAV: Unmanned Aerial Vehicle), AR (Augmented Reality) device, VR (Virtual Reality) device, etc.
- AI Artificial Intelligence
- drone UAV: Unmanned Aerial Vehicle
- AR Algmented Reality
- VR Virtual Reality
- CDMA may be implemented with a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000.
- TDMA may be implemented with a radio technology such as Global System for Mobile communications (GSM)/General Packet Radio Service (GPRS)/Enhanced Data Rates for GSM Evolution (EDGE).
- GSM Global System for Mobile communications
- GPRS General Packet Radio Service
- EDGE Enhanced Data Rates for GSM Evolution
- OFDMA may be implemented with radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and Evolved UTRA (E-UTRA).
- UTRA is part of the Universal Mobile Telecommunications System (UMTS).
- 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a 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 Technical Specification (TS) 36.xxx Release 8.
- TS Technical Specification
- 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" means standard document detail number.
- LTE/NR may be collectively referred to as a 3GPP system.
- 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 General description of NR and New Generation-Radio Access Network (NG-RAN)
- TS 38.331 Radio Resource Control Protocol Specification
- channel state information - reference signal resource indicator channel state information - reference signal resource indicator
- channel state information - reference signal channel state information - reference signal
- Layer 1 reference signal received quality Layer 1 reference signal received quality
- orthogonal frequency division multiplexing orthogonal frequency division multiplexing (orthogonal frequency division multiplexing)
- radio resource control radio resource control
- Synchronization signal block including primary synchronization signal (PSS), secondary synchronization signal (SSS) and physical broadcast channel (PBCH)
- NR is an expression showing an example of 5G RAT.
- a new RAT system including NR uses an OFDM transmission scheme or a transmission scheme similar thereto.
- the new RAT system may follow OFDM parameters different from those of LTE.
- the new RAT system follows the numerology of the existing LTE/LTE-A as it is, but may support a larger system bandwidth (eg, 100 MHz).
- one cell may support a plurality of numerologies. That is, terminals operating with different numerologies can coexist in one cell.
- a numerology corresponds to one subcarrier spacing in the frequency domain.
- Different numerologies can be defined by scaling the reference subcarrier spacing by an integer N.
- FIG. 1 illustrates the structure of a wireless communication system to which the present disclosure may be applied.
- the NG-RAN is a NG-RA (NG-Radio Access) user plane (ie, a new AS (access stratum) sublayer / PDCP (Packet Data Convergence Protocol) / RLC (Radio Link Control) / MAC / PHY) and control plane (RRC) protocol termination to the UE.
- the gNBs are interconnected through an Xn interface.
- the gNB is also connected to a New Generation Core (NGC) through an NG interface. More specifically, the gNB is connected to an Access and Mobility Management Function (AMF) through an N2 interface and to a User Plane Function (UPF) through an 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.
- An NR system can support multiple numerologies.
- numerology may be defined by subcarrier spacing and Cyclic Prefix (CP) overhead.
- the 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 a plurality of numerologies may be supported.
- OFDM numerology and frame structure that can be considered in the NR system will be described.
- Multiple OFDM numerologies supported in the NR system can be defined as shown in Table 1 below.
- NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, when the SCS is 15 kHz, it supports a wide area in traditional cellular bands, and when the SCS is 30 kHz/60 kHz, dense-urban, lower latency and a wider carrier bandwidth, and when the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz is supported to overcome phase noise.
- SCS subcarrier spacing
- the NR frequency band is defined as two types of frequency ranges (FR1 and FR2).
- FR1 and FR2 may be configured as shown in Table 2 below.
- FR2 may mean millimeter wave (mmW).
- ⁇ f max 480 10 3 Hz
- N f 4096.
- T TA (N TA +N TA,offset )T c before the start of the corresponding downlink frame in the corresponding terminal.
- 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 is composed 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 simultaneously transmit and receive, 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 radio 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.
- one subframe may include 4 slots.
- a mini-slot may contain 2, 4 or 7 symbols, more or fewer symbols.
- an antenna port a resource grid, a resource element, a resource block, a carrier part, etc. can be considered Hereinafter, the physical resources that can be considered in the NR system will be described in detail.
- the antenna port is defined such that the channel on which a symbol on the antenna port is carried can be inferred from the channel on which other symbols on the same antenna port are carried. If the large-scale properties of the channel on which the symbols on one antenna port are carried can be inferred from the channel on which the symbols on the other antenna port are carried, then the two antenna ports are quasi co-located or QC/QCL (quasi co-located or quasi co-location).
- the wide range characteristic includes 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 may be applied.
- a 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.
- a transmitted signal is described by one or more resource grids consisting of N RB ⁇ N sc RB subcarriers and 2 ⁇ N symb ( ⁇ ) OFDM symbols.
- N RB ⁇ ⁇ N RB max, ⁇ The N RB max, ⁇ represents the maximum transmission bandwidth, which may vary not only between numerologies but also between uplink and downlink.
- one resource grid may 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 the index pair (k, ) is uniquely identified by
- an index pair (k,l) is used.
- l 0,...,N symb ⁇ -1.
- ⁇ and the resource factor for antenna port p (k, ) is a complex value corresponds to If there is no risk of confusion, or if a particular antenna port or numerology is not specified, the indices p and ⁇ can be dropped, resulting in a complex value or This can be.
- Point A serves as a common reference point of the resource block grid and is obtained as follows.
- OffsetToPointA for primary cell (PCell) downlink represents the frequency offset between point A and the lowest subcarrier of the lowest resource block overlapping the SS/PBCH block used by the UE for initial cell selection. It is expressed in resource block units assuming a 15 kHz subcarrier spacing for FR1 and a 60 kHz 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 ⁇ .
- the center of subcarrier 0 of common resource block 0 for subcarrier spacing setting ⁇ coincides with 'point A'.
- the relationship between the common resource block number n CRB ⁇ and the resource elements (k, l) for the subcarrier spacing ⁇ is given by Equation 1 below.
- Physical resource blocks are numbered from 0 to N BWP,i size, ⁇ -1 within a bandwidth part (BWP), where i is the number of BWP.
- BWP bandwidth part
- Equation 2 The relationship between the physical resource block n PRB and the common resource block n CRB in BWP i is given by Equation 2 below.
- N BWP,i start, ⁇ is a common resource block where 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 may 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 a normal CP, one slot includes 7 symbols, but in the case of an extended CP, one slot includes 6 symbols.
- a carrier includes a plurality of subcarriers in the frequency domain.
- a resource block (RB) is defined as a plurality of (eg, 12) consecutive subcarriers in the frequency domain.
- a bandwidth part (BWP) is defined as a plurality of contiguous (physical) resource blocks in the frequency domain, and may correspond to one numerology (eg, SCS, CP length, etc.).
- a carrier may include up to N (eg, 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 may 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 always operates with radio frequency (RF) chips for the entire CC turned on, battery consumption of the terminal may increase.
- a terminal operating in such a wideband CC always operates with radio frequency (RF) chips for the entire CC turned on, battery consumption of the terminal may increase.
- RF radio frequency
- different numerologies eg subcarrier spacing, etc.
- the capability for the maximum bandwidth may be different for each terminal.
- the base station may instruct the terminal to operate only in a part of the bandwidth rather than the entire bandwidth of the wideband 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 (eg, subcarrier spacing, CP length, slot/mini-slot period).
- the base station may set multiple BWPs even within one CC configured for the terminal. For example, in a PDCCH monitoring slot, a BWP occupying a relatively small frequency domain may be set, and a PDSCH indicated by the PDCCH may be scheduled on a larger BWP. Alternatively, when UEs are concentrated in a specific BWP, some UEs may be set to other BWPs for load balancing. Alternatively, considering frequency domain inter-cell interference cancellation between neighboring cells, some of the spectrum among the entire bandwidth may be excluded and both BWPs may be configured even within the same slot. That is, the base station may configure at least one DL/UL BWP for a terminal associated with a wideband CC.
- the base station may activate at least one DL/UL BWP among the configured DL/UL BWP(s) at a specific time (by L1 signaling or MAC Control Element (CE) or RRC signaling).
- the base station may indicate switching to another configured DL / UL BWP (by L1 signaling or MAC CE or RRC signaling).
- a timer value expires based on a timer, it may be switched to a predetermined DL/UL BWP.
- the activated DL/UL BWP is defined as an active DL/UL BWP.
- the terminal In situations such as when the terminal is performing an initial access process or before an RRC connection is set up, it may not be possible to receive the configuration for DL / UL BWP, so in this situation, the terminal This assumed DL/UL BWP is defined as the first active DL/UL BWP.
- FIG. 6 illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission/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.
- Information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist according to the type/use of the information transmitted and received by the base station and the terminal.
- the terminal When the terminal is turned on or newly enters a cell, the terminal performs an initial cell search operation such as synchronizing with the base station (S601). To this end, the terminal synchronizes with the base station by receiving a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) from the base station, and obtains information such as a cell identifier (ID: Identifier). can Thereafter, the UE may acquire intra-cell broadcast information by receiving a Physical Broadcast Channel (PBCH) from the base station. Meanwhile, the terminal may check the downlink channel state by receiving a downlink reference signal (DL RS) in the initial cell search step.
- PSS primary synchronization signal
- SSS secondary synchronization signal
- ID cell identifier
- the UE may acquire intra-cell broadcast information by receiving a Physical Broadcast Channel (PBCH) from the base station.
- PBCH Physical Broadcast Channel
- the terminal may check the downlink channel state by receiving a downlink reference signal (DL RS) in the initial cell
- the UE After completing the initial cell search, the UE acquires more detailed system information by receiving a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Control Channel (PDSCH) according to information carried on the PDCCH. It can (S602).
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Control 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 to the preamble through a PDCCH and a corresponding PDSCH ( S604 and S606).
- PRACH physical random access channel
- a contention resolution procedure may be additionally performed.
- the UE receives PDCCH/PDSCH as a general uplink/downlink signal transmission procedure (S607) and Physical Uplink Shared Channel (PUSCH)/Physical Uplink Control Channel (PUCCH: Physical Uplink Control Channel) transmission (S608) may be performed.
- the terminal receives downlink control information (DCI) through the PDCCH.
- DCI downlink control information
- the DCI includes control information such as resource allocation information for a terminal, and has different formats depending on its purpose of use.
- the control information that the terminal transmits to the base station through the uplink or the terminal receives from the base station is a downlink / uplink ACK / NACK (Acknowledgement / Non-Acknowledgement) signal, CQI (Channel Quality Indicator), PMI (Precoding Matrix) Indicator), RI (Rank Indicator), etc.
- a terminal may transmit control information such as the above-described CQI/PMI/RI through PUSCH and/or PUCCH.
- Table 5 shows an example of a DCI format in the NR system.
- DCI format uses 0_0 Scheduling of PUSCH in one cell 0_1 Scheduling of one or multiple PUSCHs in one cell, or indication of cell group (CG) downlink feedback information to the UE 0_2 Scheduling of PUSCH in one cell 1_0 Scheduling of PDSCH in one DL cell 1_1 Scheduling of PDSCH in one cell 1_2 Scheduling of PDSCH in one cell
- DCI formats 0_0, 0_1, and 0_2 are resource information related to PUSCH scheduling (eg, UL/SUL (Supplementary UL), frequency resource allocation, time resource allocation, frequency hopping, etc.), transport block ( TB: Transport Block) related information (eg, MCS (Modulation Coding and Scheme), NDI (New Data Indicator), RV (Redundancy Version), etc.), HARQ (Hybrid - Automatic Repeat and request) related information (eg, , process number, downlink assignment index (DAI), PDSCH-HARQ feedback timing, etc.), multi-antenna related information (eg, DMRS sequence initialization information, antenna port, CSI request, etc.), power control information (eg, PUSCH power control, etc.), and control information included in each DCI format may be predefined.
- PUSCH scheduling eg, UL/SUL (Supplementary UL), frequency resource allocation, time resource allocation, frequency hopping, etc.
- DCI format 0_0 is used for PUSCH scheduling in one cell.
- Information included in DCI format 0_0 is a cyclic redundancy check (CRC) by C-RNTI (Cell RNTI: Cell Radio Network Temporary Identifier), CS-RNTI (Configured Scheduling RNTI) or MCS-C-RNTI (Modulation Coding Scheme Cell RNTI) ) is scrambled and transmitted.
- CRC cyclic redundancy check
- C-RNTI Cell RNTI: Cell Radio Network Temporary Identifier
- 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 configured grant (CG) downlink feedback information to the UE.
- Information included in DCI format 0_1 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI (Semi-Persistent CSI RNTI) or MCS-C-RNTI.
- DCI format 0_2 is used for PUSCH scheduling in one cell.
- Information included in DCI format 0_2 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI or MCS-C-RNTI.
- DCI formats 1_0, 1_1, and 1_2 are resource information related to PDSCH scheduling (eg, frequency resource allocation, time resource allocation, VRB (virtual resource block)-PRB (physical resource block) mapping, etc.), transport block (TB) related information (eg, MCS, NDI, RV, etc.), HARQ related information (eg, process number, DAI, PDSCH-HARQ feedback timing, etc.), multi-antenna related information (eg, antenna port , transmission configuration indicator (TCI), sounding reference signal (SRS) request, etc.), PUCCH-related information (eg, PUCCH power control, PUCCH resource indicator, etc.), and the control information included in each DCI format can be predefined.
- PDSCH scheduling eg, frequency resource allocation, time resource allocation, VRB (virtual resource block)-PRB (physical resource block) mapping, etc.
- transport block (TB) related information eg, MCS, NDI, RV, etc.
- HARQ related information
- DCI format 1_0 is used for PDSCH scheduling in one DL cell.
- Information included in DCI format 1_0 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI or MCS-C-RNTI.
- DCI format 1_1 is used for PDSCH scheduling in one cell.
- Information included in DCI format 1_1 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI or MCS-C-RNTI.
- DCI format 1_2 is used for PDSCH scheduling in one cell.
- Information included in DCI format 1_2 is transmitted after being CRC scrambled by C-RNTI, CS-RNTI or MCS-C-RNTI.
- MBMS Multimedia Broadcast Multicast Service
- MBMS is a single frequency network (SFN) method in which a plurality of base stations or cells are synchronized to transmit the same data to a terminal, and a single cell point to multipoint (SC-PTM) method broadcasting within a corresponding cell coverage through a PDCCH / PDSCH channel. ) method may be included.
- SFN single frequency network
- SC-PTM single cell point to multipoint
- the SFN scheme may be used to provide a broadcast service in a wide area (eg, MBMS area) through semi-statically allocated resources.
- MBSFN Multicast Broadcast Single Frequency Network
- MCCH Multicast Control Channel
- MTCH Multicast Traffic Channel
- both MCCH and MTCH are transport channels MCH (Multicast Channel)
- PMCH physical multicast channel
- a plurality of base stations/cells may be synchronized to provide the same data to the terminal through the PMCH.
- One base station/cell may belong to multiple MBSFN areas.
- MBSFN subframe configuration may be required for MBSFN service.
- the SC-PTM scheme may be mainly used to provide a broadcast service only within cell coverage through dynamic resources.
- SC-PTM provides one logical channel SC-MCCH (Single Cell Multicast Control Channel) and one or more logical channels SC-MTCH (Single Cell Multicast Traffic Channel). These logical channels (i.e., SC-MCCH and SC-MTCH) are mapped to the transport channel DL-SCH, and the transport channel DL-SCH is mapped to the physical channel PDSCH.
- a PDSCH transmitting data corresponding to the SC-MCCH or SC-MTCH is scheduled through a PDCCH scrambled by CRC with a Group-Radio Network Temporary Identifier (G-RNTI).
- G-RNTI Group-Radio Network Temporary Identifier
- TMGI Temporal Mobile Group Identity
- TMGI Temporal Mobile Group Identity
- a base station provides multiple MBMS services, multiple G-RNTI values may be allocated for SC-PTM transmission.
- One or a plurality of terminals may perform PDCCH monitoring using a specific G-RNTI to receive a specific MBMS service.
- a discontinuous reception (DRX) on-duration period dedicated to SC-PTM may be configured for a specific MBMS service/specific G-RNTI. In this case, the corresponding terminals can wake up only for a specific on-duration period and perform PDCCH monitoring for the G-RNTI.
- SPS Semi-persistent Scheduling
- the base station may provide a terminal-specific SPS configuration to a specific terminal and allocate one or more downlink SPS transmission resources repeated according to a set period.
- DCI of a UE-specific (or UE-specific) PDCCH may indicate activation of a specific SPS configuration index (SPS activation).
- the UE may perform downlink reception through activated SPS transmission resources. These SPS transmission resources may be used for initial HARQ transmission.
- the base station may allocate retransmission resources of a specific SPS configuration index through the DCI of the terminal-dedicated PDCCH. For example, if the terminal reports HARQ NACK for SPS transmission resources, the base station can allocate retransmission resources with DCI so that the terminal can receive downlink retransmission.
- the DCI of the UE-dedicated PDCCH may indicate release or deactivation of a specific SPS configuration index. In this case, the corresponding terminal does not receive the SPS transmission resource for which release/deactivation is instructed.
- the CRC of DCI/PDCCH for activation/retransmission/deactivation of SPS configuration/resources may be scrambled by configured scheduling-radio network temporary identifier (CS-RNTI).
- CS-RNTI scheduling-radio network temporary identifier
- MMS Multicast Broadcast Service
- the network side eg base station/cell/TRP
- PTM point-to-multipoint
- PTP point-to-point
- a base station may transmit a group common (or group-specific) PDCCH (Group Common PDCCH) and a group common PDSCH (Group Common PDSCH) to a plurality of terminals.
- a plurality of terminals can simultaneously receive the same group common PDCCH and group common PDSCH transmission to decode the same MBS data.
- a base station can transmit a UE-specific (or UE-specific) PDCCH and a UE-specific PDSCH to a specific UE.
- the corresponding one terminal may receive a terminal-dedicated PDCCH and a terminal-dedicated PDSCH.
- the base station may separately transmit the same MBS data to each of the plurality of terminals through different terminal-dedicated PDCCHs and terminal-dedicated PDSCHs.
- the base station may transmit a plurality of group common PDSCHs to the terminals.
- the base station may receive the HARQ-ACK of the terminal for the PDSCH common to the group through the PUCCH resource dedicated to the terminal.
- the UE When the UE successfully decodes a transport block (TB) for a group common PDSCH, the UE may transmit an ACK value as HARQ-ACK information. If the UE does not successfully decode the TB for the unicast PDSCH or the group common PDSCH, the UE may transmit a NACK value as HARQ-ACK information.
- This HARQ-ACK transmission scheme may be referred to as an ACK/NACK based HARQ-ACK scheme.
- ACK/NACK-based HARQ-ACK information may be generally transmitted through UE-dedicated PUCCH resources.
- a NACK-only based HARQ-ACK scheme may be applied/configured for the group common PDSCH.
- the UE does not transmit PUCCH in the case of an ACK value (ie, when decoding of the received PDSCH is successful), and transmits the PUCCH only in the case of a NACK value (ie, in case of failure to decode the received PDSCH).
- NACK only-based HARQ-ACK information may be generally transmitted through a group common PUCCH resource.
- ACK/NACK-based HARQ-ACK can be referred to as HARQ-ACK information based on the first HARQ-ACK reporting mode, and NACK only-based HARQ-ACK can be referred to as HARQ-ACK information based on the second HARQ-ACK reporting mode. -This can be referred to as ACK information.
- a DCI format that is CRC scrambled by G-RNTI or G-CS-RNTI may be referred to as a group common DCI format or a multicast DCI format.
- the group common/multicast DCI format may also be referred to as a group common/multicast PDCCH, and a PDSCH scheduled thereby may be referred to as a group common/multicast PDSCH.
- a terminal may receive unicast traffic through a terminal-dedicated unicast PDSCH and receive multicast traffic such as MBS through a multicast PDSCH common to a group.
- the UE may transmit unicast HARQ-ACK for unicast PDSCH and transmit multicast HARQ-ACK for multicast PDSCH. If PUCCH transmission for unicast HARQ-ACK and PUCCH transmission for multicast HARQ-ACK overlap or must be transmitted in the same slot, how can a UE that cannot simultaneously transmit two PUCCHs transmit unicast HARQ-ACK and multicast HARQ? -There is a problem where it is not clear whether to send an ACK.
- the ACK/NACK-based HARQ-ACK transmission scheme is not limited to HARQ-ACK for unicast PDCCH/PDSCH, and as described above, HARQ-ACK for multicast PDCCH/PDSCH is also ACK/NACK-based HARQ-ACK.
- An ACK transmission method may be applied.
- unicast HARQ-ACK information and multicast HARQ-ACK information collide in the same time unit.
- HARQ-ACK information and multicast HARQ-ACK information collide in the same time unit.
- various examples of transmitting or receiving HARQ-ACK by applying one or more of multiplexing, drop, partial selection, or separation will be described.
- a plurality of HARQ-ACKs are multiplexed into one PUCCH or divided into a plurality of PUCCHs and transmitted It could be.
- a terminal may be configured to transmit HARQ-ACK according to one of the methods described below, or to transmit HARQ-ACK according to a combination of two or more of the methods described below.
- HARQ-ACK For all overlapping unicast HARQ-ACK and multicast HARQ-ACK, a method of dropping HARQ-ACK, which is LP (low priority), and transmitting HARQ-ACK, which is HP (high priority), is applied/configured It could be.
- the following options may be considered for overlapping unicast HARQ-ACK and multicast HARQ-ACK transmission.
- the UE may transmit unicast HARQ-ACK first and drop multicast HARQ-ACK.
- the base station may set/instruct the terminal to transmit and drop preferentially between unicast HARQ-ACK and multicast HARQ-ACK.
- Option 3 Compare the priority indicated by the last DCI received for unicast HARQ-ACK and the priority indicated by the last DCI received for multicast HARQ-ACK, and obtain a unicast HARQ-ACK with a higher priority
- multicast HARQ-ACK may be transmitted and the remaining HARQ-ACK may be dropped.
- Option 4 Among unicast HARQ-ACK and multicast HARQ-ACK, one with a small HARQ-ACK payload may be dropped and one with a large HARQ-ACK payload may be transmitted.
- the UE determines that there is no case of collision with other HARQ-ACK or SR/CSI reporting.
- ACK only-based HARQ-ACK
- the base station may set to the terminal whether to consider whether the NACK only-based HARQ-ACK is actually transmitted or not, or whether it is considered to be virtually transmitted regardless of whether it is actually transmitted or not.
- the fact that some information is defined between the terminal and the base station means that the terminal and the base station know the corresponding information without separate signaling between the terminal and the base station; Being configured between the terminal and the base station means transmitting/receiving corresponding information through higher layer (eg, RRC) signaling between the terminal and the base station; Indicated between the terminal and the base station means that the corresponding information is transmitted/received through lower layer (eg, L1 (eg, DCI/UCI), L2 (eg, MAC-CE)) signaling.
- higher layer eg, RRC
- L1 eg, DCI/UCI
- L2 eg, MAC-CE
- FIG. 7 exemplarily shows an overlapping situation of HARQ-ACK information in a NACK-only based reporting mode to which the present disclosure can be applied.
- DCI (or PDCCH), PDSCH scheduled by it, and HARQ-ACK for this are displayed on the same line. That is, in FIG. 7, 4 sets of associated/corresponding DCI (PDCCH), PDSCH, and HARQ-ACK are shown.
- FIG. 7 shows four HARQ-ACKs for four DCI/PDSCHs, the scope of the present disclosure may also be applied to a plurality of HARQ-ACKs for a plurality of DCI/PDSCHs.
- the horizontal axis is related to time, it is not intended to indicate an absolute or relative time position, and exemplarily indicates a situation in which HARQ-ACKs corresponding to different DCI/PDSCHs overlap (or are transmitted in the same slot).
- multicast DCI may be CRC scrambled with G-RNTI.
- the multicast DCI may indicate high priority (HP) or low priority (LP).
- HP high priority
- LP low priority
- HARQ-ACK for multicast DCI/PDSCH indicates a case of NACK only-based HARQ-ACK.
- a UE may receive a plurality of multicast PDCCHs/PDSCHs scheduled by different G-RNTIs in an FDM or TDM manner.
- transmission of multicast HARQ-ACK information for multicast PDCCH/PDSCH may be configured/determined to be performed in the same slot.
- All multicast HARQ-ACKs can be set to NACK only based HARQ-ACK.
- the UE may transmit one or a plurality of PUCCHs for a plurality of NACK only-based HARQ-ACKs.
- FIG. 8 is a diagram for explaining a HARQ-ACK transmission method of a terminal according to an embodiment of the present disclosure.
- step S810 the UE may generate N HARQ-ACK information bits related to the second HARQ-ACK reporting mode.
- N can be defined as an integer greater than 1. That is, a plurality of HARQ-ACK information bits related to the second HARQ-ACK reporting mode (ie, NACK-only based HARQ-ACK reporting mode) may be generated.
- the N HARQ-ACK information bits may be generated for one or more of one or more multicast DCI formats and/or one or more multicast PDSCHs received from the network.
- the multicast DCI format may be CRC scrambled with a group-radio network temporary identifier (G-RNTI) or configured scheduling (G-CS)-RNTI.
- G-RNTI group-radio network temporary identifier
- G-CS configured scheduling
- step S820 the UE may transmit HARQ-ACK information to the network by applying either the first method or the second method on one PUCCH.
- either the first method or the second method may be applied based on settings by the network (or base station).
- k could be 2, 3, or 4.
- the second scheme is applied to two, three, or four NACK-only based HARQ-ACK information bits
- the first scheme is applied to more than four NACK-only based HARQ-ACK information bits.
- the first method may refer to a method of transmitting HARQ-ACK information according to a first HARQ-ACK reporting mode (ie, an ACK/NACK-based HARQ-ACK reporting mode). That is, the first method may include converting N HARQ-ACK information bits related to the second HARQ-ACK reporting mode into HARQ-ACK information bits of the first HARQ-ACK reporting mode and multiplexing them.
- a first HARQ-ACK reporting mode ie, an ACK/NACK-based HARQ-ACK reporting mode
- the PUCCH resource may be determined based on the PUCCH resource indicator (PRI) field included in the multicast DCI format.
- the corresponding multicast DCI format may be the last (last) DCI format among one or more multicast DCI formats. That is, the (converted) HARQ-ACK information bits of the first HARQ-ACK reporting mode may be transmitted through a PUCCH resource indicated by one or more DCI formats related to the second HARQ-ACK reporting mode.
- the second method may refer to a method of transmitting HARQ-ACK information by selecting one PUCCH resource from a set of PUCCH resources based on values of N HARQ-ACK information bits.
- a set of PUCCH resources may include 2 N -1 PUCCH resource candidates.
- each of the PUCCH resource candidates may correspond to a different combination of values of N HARQ-ACK information bits. If the value of the HARQ-ACK information bit is 0, it corresponds to the case where the terminal did not correctly decode the TB (transport block), and if the value is 1, it corresponds to the case where the terminal correctly decodes the TB.
- FIG. 9 is a diagram for explaining a HARQ-ACK receiving method of a base station according to an embodiment of the present disclosure.
- the base station may transmit one or more of one or more multicast DCIs or one or more multicast PDSCHs to the terminal.
- step S920 the base station applies one of the first scheme and the second scheme to N HARQ-ACK information bits related to the second HARQ-ACK reporting mode generated based on one or more multicast DCI/PDSCH.
- ACK information can be received from the UE on one PUCCH.
- a plurality of HARQ-ACK information bits related to the second HARQ-ACK reporting mode including the above, applicable to the examples of FIGS.
- NACK-only based HARQ-ACK reporting mode including the above, applicable to the examples of FIGS.
- Various examples of transmission in the above will be described later.
- This embodiment relates to a method for a UE to configure resources for NACK only-based HARQ-ACK transmission/reception and to transmit/receive HARQ-ACK information using this resource.
- the resource for HARQ-ACK transmission/reception may correspond to one or more of a PUCCH resource, a PUCCH resource block (RB), or a PUCCH sequence (eg, a cyclic shift (CS) index).
- PUCCH transmission of NACK only-based HARQ-ACK collides with PUCCH transmission of one or more other NACK only-based HARQ-ACKs or must be transmitted in the same slot.
- a UE capable of simultaneously transmitting two PUCCHs can simultaneously transmit at least two NACK only-based HARQ-ACKs on different PUCCHs.
- the following examples can be applied in order for the UE to multiplex and transmit NACK only-based HARQ-ACKs.
- the base station configures 2 N -1 PUCCH resources.
- 2 N -1 PUCCH resources may be set separately as PUCCH resources for NACK only-based HARQ-ACK reporting mode (eg, distinguished from PUCCH resources for ACK/NACK-based HARQ-ACK reporting mode).
- the group common PDSCH may correspond to a group common SPS PDSCH or a group common SPS PDSCH scheduled by DCI.
- the HARQ-ACK information bit may be generated for a DCI indicating activation/deactivation of SPS transmission and/or a multicast PDSCH scheduled by the multicast DCI.
- This DCI may include PUCCH resource indicator (PRI).
- PRI PUCCH resource indicator
- N -1 eg, up to 3
- PUCCH resources can be defined/configured.
- PUCCH resources indicated by the PRI and predetermined PUCCH resources may be combined to define/configure up to 2 N -1 PUCCH resources.
- the predetermined PUCCH resource may be a PUCCH resource corresponding to a value of PRI+1, or a PUCCH resource defined/configured for an adjacent RB (or PRB) of an RB (or PRB) configured for the PUCCH resource indicated by the PRI It could be.
- 2 N -1 PUCCH resources may be distinguished based on different time-frequency resources, and different PUCCH sequences or values of different cyclic shifts applied to the PUCCH sequences (eg, 0, 3, 6 ) may be distinguished based on.
- PUCCH-config ie, a set of higher layer parameters
- NACK-only HARQ-ACK may be configured.
- HARQ-ACK information may be transmitted through one PUCCH according to a combination of values of three HARQ-ACK information bits (ie, HARQ-ACK status).
- the PUCCH resource index indicated by the PRI of the last received DCI eg, the DCI received last among group common (or multicast) DCIs is 4.
- N 3
- A ACK or 1.
- adjacent 2 N -1 PRIs may be selected.
- one of 2 N -1 HARQ-ACK states may be selected.
- HARQ-ACK multiplexed with PUCCH resources according to a PRI corresponding to a HARQ-ACK state selected from among 2 N -1 PRIs may be transmitted.
- the value of the HARQ-ACK information bit for the 1st PDSCH is 1 (or ACK), the value of the HARQ-ACK information bit for the 1st PDSCH is 0 (or NACK), HARQ-ACK information bit for the 1st PDSCH Assume that the value of is 0 (or NACK).
- this corresponds to HARQ-ACK status index 2
- HARQ-ACK information transmitted/received through the selected PUCCH resource may indicate whether decoding of each PDSCH (or corresponding TB) corresponding to HARQ-ACK status index 2 is successful.
- PRIs indicated by DCI may not exist.
- the PUCCH resource of the group common PDSCH corresponding to the lowest SPS configuration index (SPS Config index) the highest SPS configuration index, or a higher priority among the N PDSCHs PRI may be determined as a reference resource.
- PUCCH resources corresponding to a total of 2 N -1 PRIs including a PRI corresponding to the reference resource and subsequent PRIs may be selected as the PUCCH resource set.
- a one-to-one mapping relationship may be defined/configured between 2 N -1 PUCCH resources (or PRIs) included in one PUCCH resource set and 2 N -1 HARQ-ACK states.
- N 2, 3, or 4
- a mapping relationship between a combination of HARQ-ACK information bits (ie, HARQ-ACK state) and PUCCH resources may be predefined/configured as shown in the table below.
- the transmission resource set corresponds to the sets of PUCCH resources (or PRI) of the above-described examples, or is defined by one or more combinations of PUCCH resources, PUCCH RBs, PUCH sequences, or CS indexes of examples described below / Can be set/determined.
- Embodiment 1-2 Based on the RB corresponding to the PUCCH resource indicated by the PRI of the last received group common DCI, adjacent 2 N -1 RBs may be selected. According to the decoding result of the N group common PDSCHs, one of 2 N -1 HARQ-ACK states may be selected. HARQ-ACK multiplexed with a PUCCH resource according to an RB corresponding to an HARQ-ACK state selected from among 2 N -1 RBs may be transmitted.
- the required number of RBs may be additionally selected sequentially from the lowest RB of the corresponding UL BWP.
- the value of the HARQ-ACK information bit for the 1st PDSCH is 1 (or ACK), the value of the HARQ-ACK information bit for the 1st PDSCH is 0 (or NACK), HARQ-ACK information bit for the 1st PDSCH Assume that the value of is 0 (or NACK).
- N group common PDSCHs are SPS PDSCHs
- PRIs indicated by DCI may not exist.
- the PUCCH resource of the group common PDSCH corresponding to the lowest SPS configuration index (SPS Config index) the highest SPS configuration index, or a higher priority among the N PDSCHs
- a corresponding RB may be determined as a reference resource.
- PUCCH resources corresponding to a total of 2 N -1 RBs including an RB corresponding to the reference resource and subsequent RBs may be selected as the PUCCH resource set.
- adjacent 2 N -1 PUCCH sequences may be selected.
- adjacent PUCCH sequences may be based on PRI.
- one of 2 N -1 HARQ-ACK states may be selected.
- HARQ-ACK multiplexed with PUCCH resources according to a PUCCH sequence corresponding to a HARQ-ACK state selected from among 2 N -1 PUCCH sequences may be transmitted.
- a PUCCH sequence based on the CS index can be selected. This corresponds to a case where a PUCCH resource set can be configured with PUCCH sequences applicable to one PUCCH resource.
- the transmission resource set may include 7 PUCCH sequences.
- four CS indices may be selected in the order of 0, 6, 3, and 9.
- the value of the HARQ-ACK information bit for the 1st PDSCH is 1 (or ACK), the value of the HARQ-ACK information bit for the 1st PDSCH is 0 (or NACK), HARQ-ACK information bit for the 1st PDSCH Assume that the value of is 0 (or NACK).
- This may correspond to HARQ-ACK status index 2 in the example of Table 6.
- HARQ-ACK information transmitted/received through PUCCH resources based on the selected PUCCH sequence may indicate whether decoding of each PDSCH (or corresponding TB) corresponding to HARQ-ACK status index 2 is successful.
- N group common PDSCHs are SPS PDSCHs
- PRIs indicated by DCI may not exist.
- the PUCCH resource of the group common PDSCH corresponding to the lowest SPS configuration index (SPS Config index) the highest SPS configuration index, or a higher priority among the N PDSCHs
- a corresponding PUCCH sequence may be determined as a reference resource.
- PUCCH resources corresponding to a total of 2 N -1 PUCCH sequences including the PUCCH sequence (ie, CS resource index) corresponding to the reference resource and subsequent PUCCH sequences (or CS resource indexes) based on the PRI basis PUCCH resource set can be selected as
- adjacent 2 N -1 PUCCH sequences may be selected.
- adjacent PUCCH sequences may be based on RBs.
- one of 2 N -1 HARQ-ACK states may be selected.
- HARQ-ACK multiplexed with PUCCH resources according to a PUCCH sequence corresponding to a HARQ-ACK state selected from among 2 N -1 PUCCH sequences may be transmitted.
- a PUCCH resource set including adjacent PUCCH sequences may be configured in the same manner as in Example 1-3. .
- 7 CS indices cannot be selected for one PUCCH resource and only up to 4 CS indices You can choose.
- the transmission resource set may include 7 PUCCH sequences.
- four CS indices may be selected in the order of 0, 6, 3, and 9.
- the value of the HARQ-ACK information bit for the 1st PDSCH is 1 (or ACK), the value of the HARQ-ACK information bit for the 1st PDSCH is 0 (or NACK), HARQ-ACK information bit for the 1st PDSCH Assume that the value of is 0 (or NACK).
- This may correspond to HARQ-ACK status index 2 in the example of Table 6.
- HARQ-ACK information transmitted/received through PUCCH resources based on the selected PUCCH sequence may indicate whether decoding of each PDSCH (or corresponding TB) corresponding to HARQ-ACK status index 2 is successful.
- PUCCH resource of the group common PDSCH corresponding to the lowest SPS configuration index (SPS Config index) the highest SPS configuration index, or a higher priority among the N PDSCHs
- a corresponding PUCCH sequence may be determined as a reference resource.
- PUCCH resources corresponding to a total of 2 N -1 PUCCH sequences including the PUCCH sequence (ie, CS resource index) corresponding to the reference resource and subsequent PUCCH sequences (or CS resource index) based on the RB are PUCCH resource sets can be selected as
- sps-PUCCH which is PUCCH resource configuration information for HARQ-ACK for SPS transmission
- the reference resource may be determined based on -AN and sps-PUCCH-AN-List corresponding to the list thereof. For example, a PUCCH resource listed first or last in sps-PUCCH-AN-List or a PUCCH resource corresponding to the lowest or highest RB may be determined as a reference resource. Accordingly, adjacent PUCCH resources including the PUCCH resource corresponding to the reference resource may be included in the PUCCH resource set.
- the UE applies the above-described method (ie, embodiment 1 or its detailed examples) according to the setting of the base station, or the method described later (ie, Example 2 or detailed examples thereof) may be applied.
- the setting of the base station may be related to a predetermined threshold.
- the predetermined threshold may be related to the aforementioned N value (ie, the number of HARQ-ACK information bits based on the NACK only HARQ-ACK reporting mode to be multiplexed).
- N value ie, the number of HARQ-ACK information bits based on the NACK only HARQ-ACK reporting mode to be multiplexed.
- Example 1 may be applied when the value of N is less than or equal to k (ie, the threshold value)
- Example 2 may be applied when the value of N is greater than k.
- k may be 2, 3, or 4.
- the method of Embodiment 1 for selecting one PUCCH resource from a set of PUCCH resources based on the value of N HARQ-ACK information bits can be applied If the N value is greater than 4, as will be described later, some of the NACK only-based HARQ-ACK information bits are dropped, or ACK/NACK-based HARQ-ACK information bits are transformed to transmit multiplexed HARQ-ACK information
- the method of Example 2 may be applied.
- This threshold value k may be set by the base station to the terminal or may be predefined as a fixed value between the base station and the terminal. That is, if the setting of the base station is provided, even if the terminal is not separately set/instructed what the k value is, the first embodiment can be applied to N values less than or equal to a fixed k.
- the base station may set the threshold for each G-RNTI, each PUCCH-config, each common frequency resource (CFR), each UL BWP, or each service cell.
- the HARQ-ACK information bit(s) exceeding the k threshold (or more than k) are dropped, and the HARQ information bits less than k (or less than k) of the threshold are dropped.
- -ACK information bit(s) may be multiplexed.
- HARQ-ACK information bits with a low priority may be dropped prior to HARQ-ACK information bits with a high priority. That is, only the number of HARQ-ACK information bits corresponding to a threshold number of high priority may be multiplexed.
- HARQ-ACK information bit(s) for a recently received PDSCH may be dropped prior to HARQ-ACK information bit(s) for a PDSCH received in the past. That is, only the HARQ-ACK information bits for group common PDSCHs received in the past as many as the threshold number can be multiplexed.
- HARQ-ACK information bit(s) with a large remaining PDB Packet Data Budget
- HARQ-ACK information bit(s) with a small remaining PDB may be dropped in preference to HARQ-ACK information bit(s) with a small remaining PDB. That is, only HARQ-ACKs for TBs with a small remaining PDB may be multiplexed.
- SPS PDSCHs not scheduled with DCI may be preferentially dropped.
- the SPS PDSCH for a higher SPS-config index may be dropped first. Therefore, the SPS PDSCH for a lower SPS-config index can be preferentially multiplexed.
- a group common PDSCH scheduled by DCI may be preferentially dropped. Thereafter, among the SPS PDSCHs, the SPS PDSCH for a higher SPS-config index may be preferentially dropped. Therefore, the SPS PDSCH for a lower SPS-config index can be preferentially multiplexed.
- N exceeds (or exceeds) the threshold value k
- all NACK only-based HARQ-ACK information bits are transformed into ACK/NACK-based HARQ-ACK information bits, and one PUCCH resource is selected to multiplex HARQ-ACK information bits.
- the PUCCH resource selected for transmission of the (converted) HARQ-ACK information bits may correspond to a PUCCH resource/transmission indicated by the PRI of the last received DCI.
- 2 N Transmission resources may be selected.
- one transmission resource eg, PUCCH resource/RB/sequence
- N transmission resources e.g, N>k (ie, selected for transmission of (converted) HARQ-ACK information bits) Can be defined/configured as PUCCH resource/transmission.
- the PUCCH resource selected for transmission of (converted) HARQ-ACK information bits may be selected according to PUCCH-config for unicast or PUCCH-config for ACK/NACK-based HARQ-ACK for multicast. may be If PUCCH-config for multicast is not configured, PUCCH resources may be selected according to PUCCH-config for unicast.
- the PUCCH resource of the group common PDSCH corresponding to the lowest SPS configuration index (SPS Config index), the highest SPS configuration index, or a higher priority among the N PDSCHs may be selected for transmission of (transformed) HARQ-ACK information bits.
- the base station may set the aforementioned N value or k value to a specific value.
- the N or k value may be set to be adjusted according to (or in consideration of) the RSRP measurement value of the serving cell measured by the UE.
- FIG. 10 is a diagram for explaining a signaling procedure of a network side and a terminal according to an embodiment of the present disclosure.
- FIG. 10 is a diagram showing an interface between a network side and a terminal (UE) in a situation to which the above-described examples of the present disclosure (eg, embodiments 1 and 2, or a combination of one or more of the detailed examples) may be applied. Indicates an example of signaling.
- the UE/network side is exemplary and can be applied to various devices as described with reference to FIG. 11 . 10 is for convenience of description and does not limit the scope of the present disclosure. In addition, some step(s) shown in FIG. 10 may be omitted depending on circumstances and/or settings. In addition, in the operation of the network side/UE of FIG. 10, the above-described uplink transmission/reception operation may be referred to or used.
- the network side may be one base station including a plurality of TRPs, or may be one cell including a plurality of TRPs.
- the network side may include a plurality of remote radio heads (RRHs)/remote radio units (RRUs).
- RRHs remote radio heads
- RRUs remote radio units
- an ideal/non-ideal backhaul may be established between TRP 1 and TRP 2 constituting the network side.
- RRHs remote radio heads
- RRUs remote radio units
- TRP refers to a panel, an antenna array, and a cell (eg, macro cell/small cell/ It may be replaced with expressions such as a pico cell, etc.), a transmission point (TP), a base station (base station, gNB, etc.) and may be applied.
- TRPs may be classified according to information (eg, CORESET index, ID) on the CORESET group (or CORESET pool).
- CORESET groups or CORESET pools
- Configuration of such a CORESET group may be performed through higher layer signaling (eg, RRC signaling, etc.).
- a base station may mean a generic term for an object that transmits and receives data with a terminal.
- the base station may be a concept including one or more transmission points (TPs), one or more transmission and reception points (TRPs), and the like.
- the TP and/or the TRP may include a panel of a base station, a transmission and reception unit, and the like.
- the terminal may enter the RRC_CONNECTED mode and report a message indicating one or more interested MBS services to the network side (S105).
- the terminal may transmit the message to the network side through at least one of UCI, MAC Control Element (CE), and RRC message.
- the MBS service of interest in the message may mean one of TMGI or G-RNTI listed in the DL message received from the network side.
- the DL message may be a service availability message listing TMGI #1, TMGI #3, TMGI #5, and TMGI #10. If the terminal is interested in TMGI #5, the terminal may indicate the order of TMGI #5 in the message. That is, the terminal may report '3' to the network side.
- the DL message may be a service availability message listing G-RNTI #1, G-RNTI #3, G-RNTI #5, and G-RNTI #10. If the UE is interested in G-RNTI #10, the UE may indicate the order of G-RNTI #10 in the message. That is, the terminal may report '4' to the network side.
- the operation of transmitting the message from the UE (100 or 200 in FIG. 11) to the network side (200 or 100 in FIG. 11) in step S105 described above can be implemented by the device of FIG. 11 to be described below.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the message, and the one or more transceivers 106 may transmit the message to the network side.
- the one or more transceivers 106 may transmit the message to the network side.
- the network side may transmit configuration information to the terminal through an RRC message (S110).
- the configuration information includes CFR (common frequency resource) configuration information, one or more group common PDSCH configuration information including TCI status for one or more G-RNTI values, and TCI status for one or more G-RNTI values.
- Search space setting information may be included.
- the RRC message may be a group common message transmitted through a PTM Multicast Control Channel (MCCH) or a UE-specific message transmitted through a UE-specific Dedicated Control Channel (DCCH).
- MCCH PTM Multicast Control Channel
- DCCH UE-specific Dedicated Control Channel
- CFR may include DL CFR and UL CFR.
- one DL CFR may provide a group common PDCCH and a group common PDSCH transmission resource for MBS transmission and reception.
- One UL CFR may provide HARQ-ACK PUCCH resources for group common PDSCH reception.
- One CFR may be one MBS-specific BWP or one UE-specific BWP. Additionally or alternatively, one or multiple CFRs may be configured within one UE-specific BWP.
- One CFR may have a connection relationship with one UE-specific BWP.
- the UE may be set to at least a G-RNTI value for each MBS CFR or each serving cell.
- GC-CS-RNTI may be set/used for activation, retransmission or release of one or more group common SPS configurations.
- the UE uses the CS-RNTI to activate, retransmit, or release one or more group common SPS configurations.
- RNTI can be used.
- the network side may associate a TMGI list or a G-RNTI list with one GC-CS-RNTI value. At this time, the network side may provide a TMGI list or a G-RNTI list associated with the GC-CS-RNTI value.
- configuration information (eg, 'PDSCH-config') of each PDSCH may be configured as shown in Table 8 with minimum information elements for multicast and/or broadcast.
- PDSCH-Config :: SEQUENCE ⁇ dataScramblingIdentityPDSCH INTEGER (0..1023) OPTIONAL, -- Need S dmrs-DownlinkForPDSCH-MappingTypeA SetupRelease ⁇ DMRS-DownlinkConfig ⁇ OPTIONAL, -- Need M dmrs-DownlinkForPDSCH-MappingTypeB SetupRelease ⁇ DMRS-DownlinkConfig ⁇ OPTIONAL, -- Need M tci-StatesToAddModList SEQUENCE (SIZE(1..maxNrofTCI-States)) OF TCI-State OPTIONAL, -- Need N tci-StatesToReleaseList SEQUENCE (SIZE(1..maxNrofTCI-States)) OF TCI-StateId OPTIONAL, -- Need N vrb-ToPRB-Interleaver ENUMERATED ⁇ n2, n4 ⁇ OPTIONAL, -- Need S resourceAl
- the base station may provide the UE with an RRC information element (IE) for the specific PUCCH resource formed in the following manner.
- IE RRC information element
- Method 1A-1 For each PUCCH resource, indication information indicating whether to configure NACK only-based HARQ-ACK may be included.
- a PUCCH resource that is an RRC IE for a specific PUCCH resource may include one or more of an IE for a PUCCH resource ID or an indication IE for NACK only.
- An RRC IE for a PUCCH resource set including a specific PUCCH resource is a PUCCH resource IE for NACK only (eg, 4 to 7 PUCCH resources are set to NACK only-based HARQ-ACK), and a PUCCH resource IE for ACK/NACK (eg, 0 to 3 PUCCH resources are set to HARQ-ACK based on ACK/NACK). All of these IEs may be mapped to the same PUCCH resource set ID. In this case, within the same PUCCH resource set, based on different PUCCH resource IDs, separate PUCCH resources may be configured for ACK/NACK and NACK only.
- Method 1B NACK only and ACK/NACK can be distinguished based on a separate indicator in DCI.
- Method 1B-1 In RRC configuration, both ACK/NACK and NACK only may be configured for the same PUCCH resource ID. A separate indicator may be defined and included in the DCI, indicating whether to apply the ACK/NACK setting or the NACK only setting. Therefore, in the RRC configuration, it is not necessary to configure whether NACK only is supported for each PUCCH resource.
- the UE may assume that all PUCCH resources in PUCCH-config or in a PUCCH resource set can also support NACK only.
- Method 1B-2 Different PUCCH resource sets in PUCCH-config may be set to ACK/NACK-based HARQ-ACK or NACK only-based HARQ-ACK.
- the PUCCH-config RRC IE is a PUCCH resource set IE for NACK only (eg, PRIs 0 to 7 are all set to NACK only-based HARQ-ACK), and a PUCCH resource set IE for ACK/NACK (eg, PRIs 0 to 7 are all set to ACK/NACK-based HARQ-ACK).
- Different PUCCH-configs in the PUCCH-configurationList can be set to HARQ-ACK based on ACK/NACK or HARQ-ACK based on NACK only.
- the PUCCH-configurationList RRC IE is a PUCCH-config IE for NACK only (eg, all PUCCH resources corresponding to PRIs 0 to 7 for the PUCCH resource set of PUCCH-config are all NACK only-based HARQ-ACK set to), and PUCCH-config IE for ACK/NACK (eg, all PUCCH resources corresponding to PRIs 0 to 7 for the PUCCH resource set of PUCCH-config are all set to ACK/NACK-based HARQ-ACK ) may be included.
- the UE may determine a PUCCH resource set for NACK only-based HARQ-ACK in the following manner. That is, a method of determining a PUCCH resource set for NACK only-based HARQ-ACK from a plurality of PUCCH resource sets configured by the base station is as follows.
- PUCCH-config for multicast is configured to enable only NACK-only based HARQ-ACK, or NACK only-based HARQ-ACK and ACK/NACK-based HARQ -ACK can be set to all possible.
- Method 1-2 The base station may configure whether the first or specific PUCCH resource set in the list of up to 4 PUCCH resource sets in PUCCH-config is used for NACK-only based HARQ-ACK.
- Method 1-2A Whether the first or specific PUCCH resource set in PUCCH-config or in the PUCCH resource set of PUCCH-config is used for NACK only-based HARQ-ACK may be indicated.
- Method 1-2B Whether the first PUCCH resource set is used for NACK only based HARQ-ACK may be indicated through DCI. For example, when NACK only based HARQ-ACK is indicated through a certain DCI, the UE uses the first or specific PUCCH resource set of PUCCH-config as NACK only based HARQ-ACK, and the PUCCH indicated by the PRI of the corresponding DCI The resource may be determined to be a PUCCH resource in a first or specific PUCCH resource set.
- Method 1-3 When DCI indicates NACK-only based HARQ-ACK, the UE always selects a PUCCH resource indicated by PRI of DCI from the first PUCCH resource set and transmits NACK only based HARQ-ACK.
- NACK only-based HARQ-ACK may be transmitted by selecting a resource.
- an operation in which the UE ( 100 or 200 in FIG. 11 ) receives the setting information from the network side ( 200 or 100 in FIG. 11 ) in step S110 may be implemented by the device of FIG. 11 to be described below.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the configuration information, and the one or more transceivers 106 may receive the configuration information from the network side.
- the one or more transceivers 106 may receive the configuration information from the network side.
- the terminal may receive control information from the network side (S115). For example, the terminal may receive downlink control information (DCI) for scheduling/activating/releasing uplink/downlink from the network side.
- DCI downlink control information
- the terminal monitors the PDCCH in the SS (search space) set in the set CFR, thereby CRC-scrambled DCI with G-RNTI or G (group)-CS (configured scheduling)-RNTI.
- G-RNTI G (group)-CS (configured scheduling)-RNTI.
- an operation in which the UE (100 or 200 in FIG. 11 ) in step S115 receives the control information from the network side (200 or 100 in FIG. 11 ) may be implemented by the device of FIG. 11 to be described below.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the control information, and the one or more transceivers 106 may receive the control information from the network side.
- the terminal may receive TB from the network side (S120).
- the network side is associated with the MTCH of the MRB for the MBS service, or associated with the TMGI of the MBS service, or a short A data unit for the SPS PDSCH case associated with the ID may be included, or a TB associated with the G-RNTI mapped to the MBS service may be configured and transmitted to the UE according to service-to-resource mapping.
- MBS radio bearer MBS radio bearer
- the network side may transmit DCI to the UE through the PDCCH.
- the corresponding DCI may be CRC scrambled by G-RNTI, G-CS-RNTI, or CS-RNTI.
- the PDCCH may be implemented as a group common PDCCH or a UE-specific PDCCH.
- the DCI is an identifier for a DCI format, a carrier indicator, a bandwidth part indicator, a frequency domain resource assignment, a time domain resource assignment, a VRB-to-PRB mapping, and a PRB bundling size.
- indicator, rate matching indicator, ZP CSI-RS trigger, MCS, NDI, RV, HARQ process number, downlink allocation index, scheduled TPC command for PUCCH, PUCCH resource indicator, PDSCH-to-HARQ_feedback timing indicator It may include at least one of an antenna port, transmission configuration instruction, SRS request, DMRS sequence initialization, and priority indicator.
- the network side can send one or more information to the MBS service identified by TMGI or G-RNTI or GC-CS-RNTI.
- Service-resource mapping may be provided to the terminal.
- the data of the MBS service can be carried over the multicast traffic logical channel, that is, the MBS radio bearer (MRB) of the MTCH associated with the MBS service.
- the RRC message may be a group common message transmitted through a PTM Multicast Control Channel (MCCH) or a UE-specific message transmitted through a UE-specific Dedicated Control Channel (DCCH).
- the DCI scheduling PDSCH carrying MBS service data may also indicate one or more of a short ID, MTCH ID, MRB ID, G-RNTI value and TMGI value for MBS service.
- the UE When the UE receives the DCI scrambled by the G-RNTI to be received, the UE bases the mapping between the MBS service indicated in the DCI and the HPN and/or the mapping between the MBS service indicated in the DCI and the short ID(s). Thus, it is possible to determine the MBS service(s) associated with one or more of the short ID, MTCH ID, MRB ID, G-RNTI value, and TMGI value for each PDSCH opportunity.
- the UE can receive PDSCH transmission scheduled by DCI. If the UE is not interested in the determined MBS service(s), the UE may not receive PDSCH transmission scheduled by DCI.
- the operation in which the UE (100 or 200 in FIG. 11) in step S120 receives the TB from the network side (200 or 100 in FIG. 11) can be implemented by the device of FIG. 11 to be described below.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the TB, and the one or more transceivers 106 may receive the TB from the network side. can do.
- the UE may transmit the HARQ-ACK through the PUCCH after receiving the PDSCH scheduled by the DCI (S125). That is, according to the decoding state of the PDSCH transmission, the terminal may transmit HARQ feedback to the network side.
- the group common DCI may indicate a single PUCCH resource indicator and a single PDSCH-to-HARQ_feedback timing indicator for at least ACK/NACK-based HARQ-ACK.
- UE-specific PUCCH resource allocation for HARQ-ACK based on ACK/NACK for group common DCI other UEs in the corresponding group (unless 'PUCCH-config' for multicast is configured) use multicast or At least different values of 'PUCCH-resource' and 'dl-DataToUL-ACK' may be set in 'PUCCH-config' dedicated to a UE for unicast.
- Different PUCCH resources may be allocated to different UEs by the same PUCCH resource indicator and the same PDSCH-to-HARQ_feedback timing indicator of the group common DCI.
- the PUCCH resource indicator and PDSCH-to-HARQ_feedback timing indicator in the UE-specific DCI can be interpreted based on 'PUCCH-config' for unicast regardless of whether 'PUCCH-config' for multicast is set.
- the PUCCH resource indicator may be indicated by a group common DCI as will be described later.
- a UE-specific PRI list may be included in DCI (option 1A-1).
- Each PRI in the list indicates an entry corresponding to the candidate 'pucch-resourceId' value of 'PUCCH-config' for allocation of the same PUCCH resource or different PUCCH resources to different terminals of the group receiving the same DCI. can do.
- Different PRIs of DCI may indicate different entries of 'PUCCH-config'.
- the candidate 'pucch-resourceId' value may be set by RRC, and at least in multicast 'PUCCH-config', another 'pucch-resourceId' value may be set for other terminals of the same group.
- a group common PRI may be included in the DCI (option 1A-2).
- a single group common PRI may indicate a specific entry for a candidate 'pucch-resourceId' value in the terminal-specific 'PUCCH-config' for the same or different PUCCH resource allocation for all terminals in the group.
- the candidate 'pucch-resourceId' value may be set by RRC. At least in 'PUCCH-config' for multicast, different 'pucch-resourceId' values may be set for different terminals of the same group.
- the UE determines that the PRI of the group common DCI is a candidate of 'PUCCH-config' for multicast. It can be assumed to indicate an entry corresponding to the pucch-resourceId' value.
- the UE sets the PRI of the group common DCI to 'PUCCH-config' for unicast. It can be assumed to point to the corresponding entry for the candidate 'pucch-resourceId' value.
- K1 (PDSCH-to-HARQ_feedback timing indicator) may be indicated by a group common DCI as will be described later.
- a list of UE-specific K1 values may be included in DCI (option 1B-1).
- Each K1 in the list may indicate the same UL slot or a different UL (sub)slot for other terminals in the group.
- K1 values may be assigned to different terminals. That is, a value K1 may be assigned to device 1, a value K2 may be assigned to device 2, and a value K3 may be assigned to device 3.
- a value of K1 may be shared by several terminals.
- device 1 and device 2 may share a value of K1
- device 3 and device 4 may share a value of K2.
- one K1 value may be a reference, and another K1 value may be assigned based on the reference.
- ⁇ K1_ref, list of K1_offset ⁇ may be indicated in DCI.
- device 1 may use K1_ref
- device 2 may use K1_ref + K1_offest
- device 3 may use K1_ref + K1_offest2.
- a group common K1 value may be included in DCI (option 1B-2).
- a single K1 value may indicate a corresponding entry for a candidate 'dl-DataToUL-ACK' value in the terminal-specific 'PUCCH-config' for the same or different PUCCH resource allocation for all terminals in a group receiving DCI. there is. This may be applied when the DCI format is set in the UE-specific 'PUCCH-config' for the K1 value.
- the candidate 'dl-DataToUL-ACK' value is set by RRC, and may be set differently for different terminals of the same group, at least in 'PUCCH-config' for multicast.
- the UE determines that the K1 value of the group common DCI is 'PUCCH for multicast'. It can be assumed that -config' indicates the corresponding entry for the candidate 'dl-DataToUL-ACK' value.
- 'PUCCH-config' for multicast when 'PUCCH-config' for multicast is not configured for HARQ-ACK for grouping a common PDSCH scheduled by a group common DCI, the UE determines that the K1 value of the group common DCI is for unicast. It can be assumed that 'PUCCH-config' indicates an entry corresponding to the candidate 'dl-DataToUL-ACK' value.
- the UE when receiving a group common DCI scrambled by G-RNTI and/or a UE-specific DCI scrambled by CRC-RNTI, 'PUCCH-config' for multicast and/or 'PUCCH-config' for unicast
- the UE configures Time Domain Resource Allocation (TDRA) to provide a common PDSCH scheduled by a group common DCI and/or a UE-specific PDSCH scheduled by a UE-specific DCI
- TDRA Time Domain Resource Allocation
- the UE can periodically receive SPS transmission opportunities on the downlink assignment configured for the SPS configuration according to the above equation.
- the UE may consider NDI toggled for each reception of SPS PDSCH opportunities.
- the UE may switch between the MBS service and the SPS configuration as indicated by the activation DCI or retransmission DCI and/or as configured by the RRC message.
- mapping between MBS service and HARQ Process Number (HPN) for SPS configuration, and/or mapping between MBS service and short ID, if available, corresponding SPS PDSCH transmission opportunities are MTCH, MRB, TMGI, G-RNTI and / or it can be considered as related to the short ID of the MBS service.
- the UE may select SPS PDSCH(s) based on the ascending order of SPS configuration indices from the lowest SPS configuration index for both group common SPS PDSCH(s) and unicast SPS PDSCH(s). The UE may not receive all unselected SPS PDSCH(s).
- the base station may configure different SPS configuration indexes for group common SPS PDSCH(s) and unicast SPS PDSCH(s).
- Option B If the terminal can receive all unicast SPS PDSCH(s), the terminal selects all unicast SPS PDSCH(s), then the lowest SPS configuration index for the group common SPS PDSCH(s) From thereon, group common SPS PDSCH(s) may be selected based on the ascending order of SPS configuration indices. The UE may not receive all unselected SPS PDSCH(s).
- the UE selects the unicast SPS PDSCH(s) based on the ascending order of the SPS configuration index from the lowest SPS configuration index for the unicast SPS PDSCH(s). You can choose. The UE may not receive all non-selected SPS PDSCH(s) including all group common SPS PDSCH(s).
- the UE may select unicast SPS PDSCH(s) having a higher priority based on ascending order of SPS configuration indices from the lowest SPS configuration index for unicast SPS PDSCH(s). Thereafter, the UE may select group common SPS PDSCH(s) having a high priority based on the ascending order of the SPS configuration index from the lowest SPS configuration index for the group common SPS PDSCH(s). After that, the terminal may select unicast SPS PDSCH(s) having a lower priority based on an ascending order of SPS configuration indices from the lowest SPS configuration index for the unicast SPS PDSCH(s).
- the UE may select group common SPS PDSCH(s) having a lower priority based on an ascending order of SPS configuration indices from the lowest SPS configuration index for the group common SPS PDSCH(s).
- the UE may not receive all unselected SPS PDSCH(s).
- the UE may determine PUCCH resources only for HARQ-ACK for the selected SPS PDSCH(s). In addition, the UE may generate HARQ-ACK information bits only for HARQ-ACK(s) for the selected SPS PDSCH(s).
- the UE when the UE selects the group common SPS PDSCH(s), the UE, regardless of the SPS configuration index for the multicast/broadcast SPS PDSCH(s), broadcast SPS PDSCH(s) Compared to the multicast SPS PDSCH (s) can be given priority (prioritize).
- the UE may transmit HARQ NACK to the base station through PUCCH resources in the configured UL CFR.
- the UE can transmit HARQ-ACK on other PDSCH transmissions such as unicast SPS PDSCH, dynamic unicast PDSCH, PTP retransmission and/or dynamic group common PDSCH.
- PDSCH transmissions such as unicast SPS PDSCH, dynamic unicast PDSCH, PTP retransmission and/or dynamic group common PDSCH.
- the terminal may configure a codebook based on one or more of the above options.
- the UE may use NACK-only based HARQ-ACK based NACK based on the measured RSRP of the serving cell. If the measured RSRP is higher than the threshold value, NACK-only based HARQ-ACK may be transmitted through the group common PUCCH resource indicated by the PRI of DCI. If the measured RSRP is lower than the threshold, NACK-only based HARQ-ACK may be changed to ACK/NACK based HARQ-ACK on UE-specific PUCCH resources indicated by PRI of DCI.
- each 'pdsch-AggregationFactor' It may be repeated for the Nth HARQ transmission of TB within each symbol allocation between consecutive slots or between each 'repeat_number' consecutive slots.
- PUCCH resources for multiplexing of unicast (ie, UE-specific data transmission) and/or multicast (ie, group common data transmission) may be determined as follows.
- PUCCH-config for multicast when PUCCH-config for multicast is set for NACK only, the UE receives sps-PUCCH-AN- of PUCCH-config for multicast.
- PUCCH resources can be selected based on the list.
- PUCCH-config for multicast is not set, PUCCH-config for unicast is used and NACK only HARQ-ACK can be converted to ACK/NACK-based HARQ-ACK.
- the UE is PUCCH resources may be selected based on sps-PUCCH-AN-List of PUCCH-config.
- the UE may select a PUCCH resource based on sps-PUCCH-AN-List of PUCCH-config for multicast.
- the UE may select PUCCH resources based on sps-PUCCH-AN-List of PUCCH-config for unicast.
- the UE may select a PUCCH resource based on sps-PUCCH-AN-List of PUCCH-config for multicast.
- the UE For multiplexing of NACK only HARQ-ACK for group common SPS PDSCHs and ACK/NACK-based HARQ-ACK for group common SPS PDSCHs, the UE sets sps-PUCCH-AN-List of PUCCH-config for multicast Based on this, PUCCH resources can be selected.
- the UE may select a PUCCH resource based on sps-PUCCH-AN-List of PUCCH-config for unicast.
- the UE uses sps-PUCCH-AN- of PUCCH-config for unicast PUCCH resources can be selected based on the list.
- the UE may not receive the multicast PDSCH on the serving cell.
- the UE may determine a set of M A,c opportunities for the type 1 HARQ-ACK codebook according to one of the following options.
- Option A Regardless of whether the CFR is associated with the DL BWP provided by the firstActiveDownlinkBWP-Id parameter, assuming that the UE is not configured to monitor the PDCCH for the multicast DCI format for serving cell c, M A,c A set of opportunities can be determined
- Option B If CFR is associated with the DL BWP provided by the firstActiveDownlinkBWP-Id parameter, assuming that the UE is configured to monitor the PDCCH for the multicast DCI format for serving cell c, M set of A,c opportunities can decide
- Option B-1 If no CFR is associated with the DL BWP provided by the firstActiveDownlinkBWP-Id parameter, assuming that the UE is not configured to monitor the PDCCH for the multicast DCI format for serving cell c, M A, c can determine the set of opportunities
- Option B-2 If no CFR is associated with the DL BWP provided by the firstActiveDownlinkBWP-Id parameter, but the CFR is associated with the DL BWP of the serving cell, the UE transmits the PDCCH for the multicast DCI format for serving cell c Assuming it is configured to monitor, the DL BWP can be used to determine a set of M A,c opportunities for candidate PDSCH reception.
- the DL BWP may be indicated by the base station or selected based on the lowest (or highest) BWP index.
- the UE assumes that it is not configured to monitor the PDCCH for the multicast DCI format for the serving cell c, and determines a set of M A,c opportunities.
- an operation in which the UE (100 or 200 in FIG. 11) transmits the HARQ-ACK from the network side (200 or 100 in FIG. 11) in step S125 described above is implemented by the device of FIG. 11 to be described below. It can be.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to transmit the HARQ-ACK, and the one or more transceivers 106 may transmit the HARQ-ACK from the network side.
- -ACK can be sent.
- the network side receiving the HARQ NACK in the TCI state may retransmit the PDCCH and the PDSCH using the TCI state in the DL CFR configured for TB retransmission (S130).
- the UE may monitor the group common and/or UE specific PDCCH using the TCI state for the search space configured in the DL CFR to receive the TB retransmission.
- the network side may retransmit the TB to one of the terminals in the group by means of a terminal-specific PDCCH. However, since the other terminal successfully received the TB, it may not receive the retransmission of the TB.
- the UE may receive the PDSCH scheduled by the DCI of the PDCCH. If the UE successfully decodes the TB in the PDSCH, the UE decodes the TB based on the mapping between the MBS service indicated by the DCI and the HARQ process number (HPN) and/or the mapping between the MBS service indicated by the DCI and the short ID (s) may be considered to be associated with a short ID of MTCH, MRB, TMGI, G-RNTI and/or MBS service.
- HPN HARQ process number
- s short ID
- the UE may transmit HARQ ACK to the network side through PUCCH resources in the UL CFR configured according to the above-described procedure.
- the UE can transmit HARQ-ACK on other PDSCH transmissions such as unicast SPS PDSCH, dynamic unicast PDSCH, PTP retransmission and/or dynamic group common PDSCH.
- the terminal may configure a codebook based on one or more of the above-described options/embodiments.
- an operation in which the UE (100 or 200 in FIG. 11 ) in step S130 receives TB retransmission from the network side (200 or 100 in FIG. 11 ) can be implemented by the device of FIG. 11 to be described below.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the TB retransmission, and the one or more transceivers 106 may transmit the TB retransmission from the network side.
- the UE 100 or 200 in FIG. 11
- step S130 receives TB retransmission from the network side (200 or 100 in FIG. 11 )
- the device of FIG. 11 to be described below.
- one or more processors 102 may control one or more transceivers 106 and/or one or more memories 104 to receive the TB retransmission, and the one or more transceivers 106 may transmit the TB retransmission from the network side.
- FIG. 11 is a diagram illustrating a block configuration of a wireless communication device according to an embodiment of the present disclosure.
- the first wireless device 100 and the second wireless device 200 may transmit and receive radio signals through various radio access technologies (eg, LTE and NR).
- various radio access technologies eg, LTE and NR.
- the first wireless 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 flow diagrams contained in this disclosure.
- the processor 102 may process information in the memory 104 to generate first information/signal, and transmit a radio signal including the first information/signal through the transceiver 106.
- the processor 102 may receive a radio 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 .
- memory 104 may be used to perform some or all of the processes controlled by processor 102 or to perform the descriptions, functions, procedures, suggestions, methods, and/or flowcharts of operations contained in this disclosure. It may store software code including instructions.
- the processor 102 and memory 104 may be part of a communication modem/circuit/chip designed to implement a wireless communication technology (eg, LTE, NR).
- the transceiver 106 may be coupled to the processor 102 and may transmit and/or receive wireless signals via one or more antennas 108 .
- the transceiver 106 may include a transmitter and/or a receiver.
- the transceiver 106 may be used interchangeably with a radio frequency (RF) unit.
- a wireless device may mean a communication modem/circuit/chip.
- the second wireless device 200 includes one or more processors 202, one or more memories 204, and may further include one or more transceivers 206 and/or one or more antennas 208.
- Processor 202 controls memory 204 and/or transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams contained in this disclosure.
- the processor 202 may process information in the memory 204 to generate third information/signal, and transmit a radio signal including the third information/signal through the transceiver 206.
- the processor 202 may receive a radio signal including the fourth information/signal through the transceiver 206 and 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 .
- memory 204 may be used to perform some or all of the processes controlled by processor 202 or to perform the descriptions, functions, procedures, suggestions, methods, and/or flowcharts of operations contained in this disclosure. It may store software code including instructions.
- the processor 202 and memory 204 may be part of a communication modem/circuit/chip designed to implement a wireless communication technology (eg, LTE, NR).
- the transceiver 206 may be coupled to the processor 202 and may transmit and/or receive wireless signals via one or more antennas 208 .
- the transceiver 206 may include a transmitter and/or a receiver.
- the transceiver 206 may be used interchangeably with an RF unit.
- a wireless 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 (eg, functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
- One or more processors ( 102 , 202 ) may implement one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) in accordance with the descriptions, functions, procedures, proposals, methods and/or operational flow charts contained in this disclosure.
- PDUs Protocol Data Units
- SDUs Service Data Units
- processors 102, 202 may generate messages, control information, data or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams contained in this disclosure.
- One or more processors 102, 202 may process PDUs, SDUs, messages, control information, data or signals containing information (e.g., baseband signals) according to the functions, procedures, proposals and/or methods disclosed herein. generated and provided to one or more transceivers (106, 206).
- One or more processors 102, 202 may receive signals (eg, baseband signals) from one or more transceivers 106, 206, and the descriptions, functions, procedures, suggestions, methods, and/or Alternatively, PDUs, SDUs, messages, control information, data or information may be obtained according to operation flowcharts.
- signals eg, baseband signals
- PDUs, SDUs, messages, control information, data or information may be obtained according to operation flowcharts.
- 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
- Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams contained 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 one or more processors 102, 202.
- the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams contained 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 coupled with 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 be comprised 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 internally and/or external to one or more processors 102, 202. Additionally, one or more memories 104, 204 may be coupled to one or more processors 102, 202 through various technologies, such as wired or wireless connections.
- One or more transceivers 106, 206 may transmit user data, control information, radio signals/channels, etc., as referred to in the methods and/or operational flow charts of this disclosure, to one or more other devices.
- One or more transceivers 106, 206 may receive from one or more other devices user data, control information, radio signals/channels, etc. referred to in descriptions, functions, procedures, proposals, methods and/or operational flow charts, etc. contained in this disclosure.
- one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and 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 radio 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 radio signals from one or more other devices. In addition, one or more transceivers (106, 206) can be coupled with one or more antennas (108, 208), one or more transceivers (106, 206) via one or more antennas (108, 208), as described herein, It can be set to transmit and receive user data, control information, radio signals/channels, etc. mentioned in functions, procedures, proposals, methods and/or operational flowcharts.
- 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) convert the received radio signals/channels from RF band signals in order to process the received user data, control information, radio signals/channels, etc. using one or more processors (102, 202). It can be converted into a baseband signal.
- One or more transceivers 106 and 206 may convert user data, control information, and radio signals/channels processed by one or more processors 102 and 202 from baseband signals to RF band signals.
- one or more of the transceivers 106, 206 may include (analog) oscillators and/or filters.
- the scope of the present disclosure is software or machine-executable instructions (eg, operating systems, applications, firmware, programs, etc.) that cause operations in accordance with the methods of various embodiments to be executed on a device or computer, and such software or It includes a non-transitory computer-readable medium in which instructions and the like are stored and executable on a device or computer. Instructions that may be used to program a processing system that performs 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 that includes such storage medium. Features described in the disclosure may be implemented.
- the storage medium may include, but is 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.
- the 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 non-transitory computer readable storage media.
- Features described in this disclosure may be stored on any one of the machine readable media to control hardware of a processing system and to allow the processing system to interact with other mechanisms that utilize results according to embodiments of the present disclosure. It 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 wireless devices 100 and 200 of the present specification 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. no.
- the wireless communication technology implemented in the wireless devices 100 and 200 of the present specification 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 eMTC (enhanced machine type communication).
- LTE-M technologies are 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and/or 7) It may be implemented with at least one of various standards such as LTE M, and is not limited to the above-mentioned names.
- the wireless communication technology implemented in the wireless devices 100 and 200 of the present specification includes at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low power communication. It may include any one, and is not limited to the above-mentioned names.
- ZigBee technology can generate personal area networks (PANs) related to small/low-power digital communication based on various standards such as IEEE 802.15.4, and can be called various names.
- PANs personal area networks
- the method proposed in the present disclosure has been described focusing on examples applied to 3GPP LTE/LTE-A and 5G systems, but can be applied to various wireless communication systems other than 3GPP LTE/LTE-A and 5G systems.
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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 |
| HARQ-ACK 상태 인덱스 | 제 1 PDSCH에 대한 HARQ-ACK | 제 2 PDSCH에 대한 HARQ-ACK | 제 3 PDSCH에 대한 HARQ-ACK |
| 1 | N | N | N |
| 2 | A | N | N |
| 3 | N | A | N |
| 4 | N | N | A |
| 5 | A | A | N |
| 6 | N | A | A |
| 7 | A | N | A |
| HARQ-ACK 상태(HARQ-ACK 정보 비트의 조합)의 인덱스 | N=2 | N=3 | N=4 | 송신 자원 세트 내의 자원 인덱스 |
| 1 | N, N | N, N, N | N, N, N, N | 제 1 자원 |
| 2 | A, N | A, N, N | A, N, N, N | 제 2 자원 |
| 3 | N, A | N, A, N | N, A, N, N | 제 3 자원 |
| 4 | A, A, N | A, A, N, N | 제 4 자원 | |
| 5 | N, N, A | N, N, A, N | 제 5 자원 | |
| 6 | A, N, A | A, N, A, N | 제 6 자원 | |
| 7 | N, A, A | N, A, A, N | 제 7 자원 | |
| 8 | A, A, A, N | 제 8 자원 | ||
| 9 | N, N, N, A | 제 9 자원 | ||
| 10 | A, N, N, A | 제 10 자원 | ||
| 11 | N, A, N, A | 제 11 자원 | ||
| 12 | A, A, N, A | 제 12 자원 | ||
| 13 | N, N, A, A | 제 13 자원 | ||
| 14 | A, N, A, A | 제 14 자원 | ||
| 15 | N, A, A, A | 제 15 자원 |
| PDSCH-Config ::= SEQUENCE { dataScramblingIdentityPDSCH INTEGER (0..1023) OPTIONAL, -- Need S dmrs-DownlinkForPDSCH-MappingTypeA SetupRelease { DMRS-DownlinkConfig } OPTIONAL, -- Need M dmrs-DownlinkForPDSCH-MappingTypeB SetupRelease { DMRS-DownlinkConfig } OPTIONAL, -- Need M tci-StatesToAddModList SEQUENCE (SIZE(1..maxNrofTCI-States)) OF TCI-State OPTIONAL, -- Need N tci-StatesToReleaseList SEQUENCE (SIZE(1..maxNrofTCI-States)) OF TCI-StateId OPTIONAL, -- Need N vrb-ToPRB-Interleaver ENUMERATED {n2, n4} OPTIONAL, -- Need S resourceAllocation ENUMERATED { resourceAllocationType0, resourceAllocationType1, dynamicSwitch}, pdsch-TimeDomainAllocationList SetupRelease { PDSCH-TimeDomainResourceAllocationList } OPTIONAL, -- Need M pdsch-AggregationFactor ENUMERATED { n2, n4, n8 } OPTIONAL, -- Need S rateMatchPatternToAddModList SEQUENCE (SIZE (1..maxNrofRateMatchPatterns)) OF RateMatchPattern OPTIONAL, -- Need N rateMatchPatternToReleaseList SEQUENCE (SIZE (1..maxNrofRateMatchPatterns)) OF RateMatchPatternId OPTIONAL, -- Need N rateMatchPatternGroup1 RateMatchPatternGroup OPTIONAL, -- Need R rateMatchPatternGroup2 RateMatchPatternGroup OPTIONAL, -- Need R rbg-Size ENUMERATED {config1, config2}, mcs-Table ENUMERATED {qam256, qam64LowSE} OPTIONAL, -- Need S maxNrofCodeWordsScheduledByDCI ENUMERATED {n1, n2} ... } |
Claims (17)
- 무선 통신 시스템에서 단말에 의해서 하이브리드 자동 재송 요구(HARQ)-확인응답(ACK) 정보를 송신하는 방법에 있어서, 상기 방법은:제 2 HARQ-ACK 보고 모드와 관련되는 N(N>1) 개의 HARQ-ACK 정보 비트를 생성하는 단계; 및하나의 물리상향링크제어채널(PUCCH)에서, 제 1 HARQ-ACK 보고 모드에 따르는 제 1 방식, 또는 상기 N 개의 HARQ-ACK 정보 비트의 값에 기초하여 PUCCH 자원의 세트 중에서 하나의 PUCCH 자원을 선택하는 제 2 방식 중의 하나를 적용하여, HARQ-ACK 정보를 네트워크로 송신하는 단계를 포함하고,상기 제 1 방식 또는 상기 제 2 방식 중의 하나는 상기 네트워크에 의한 설정에 기초하여 적용되는, 방법.
- 제 1 항에 있어서,상기 제 2 방식에 대해서, 상기 PUCCH 자원의 세트는 2N-1 개의 PUCCH 자원 후보를 포함하는, 방법.
- 제 2 항에 있어서,상기 PUCCH 자원 후보의 각각은, 상기 N 개의 HARQ-ACK 정보 비트의 값의 상이한 조합에 대응하는, 방법.
- 제 1 항에 있어서,상기 제 1 방식은 상기 제 2 HARQ-ACK 보고 모드의 상기 N 개의 HARQ-ACK 정보 비트를 제 1 HARQ-ACK 보고 모드의 HARQ-ACK 정보 비트로 변환하여 다중화하는 것을 포함하는, 방법.
- 제 4 항에 있어서,상기 제 1 방식에 따라서 상기 제 2 HARQ-ACK 보고 모드의 상기 N 개의 HARQ-ACK 정보 비트에 대해서 상기 제 1 HARQ-ACK 보고 모드의 HARQ-ACK 정보 비트가 제공됨에 기초하여, 멀티캐스트 하향링크 제어 정보(DCI) 포맷에 포함되는 PUCCH 자원 지시자 필드에 기초하여 PUCCH 자원이 결정되는, 방법.
- 제 5 항에 있어서,상기 멀티캐스트 DCI 포맷은 하나 이상의 멀티캐스트 DCI 포맷 중에서 마지막(last) DCI 포맷인, 방법.
- 제 5 항에 있어서,상기 멀티캐스트 DCI 포맷은 G-RNTI(group-radio network temporary identifier) 또는 G-CS(configured 스케줄링)-RNTI로 CRC(cyclic redundancy check) 스크램블링되는, 방법.
- 제 1 항에 있어서,상기 N 개의 HARQ-ACK 정보 비트는, 상기 네트워크로부터 수신되는 하나 이상의 멀티캐스트 DCI 포맷 또는 하나 이상의 멀티캐스트 물리하향링크공유채널(PDSCH) 중의 하나 이상에 대해서 생성되는, 방법.
- 제 1 항에 있어서,상기 기지국의 설정에 따라서 N=k에 대해서 상기 제 2 방식이 적용되고, N>k에 대해서 상기 제 1 방식이 적용되는, 방법.
- 제 1 항에 있어서,상기 k는 2, 3, 또는 4인, 방법.
- 제 1 항에 있어서,상기 제 1 HARQ-ACK 보고 모드는, 전송 블록의 성공적 디코딩 여부에 기반한 ACK 값 또는 NACK(non-acknowledgement) 값이 HARQ-ACK 정보로서 생성되는 것을 포함하는, 방법.
- 제 1 항에 있어서,상기 제 2 HARQ-ACK 보고 모드는, ACK 값만을 포함하는 HARQ-ACK 정보는 전송되지 않고, NACK 값을 포함하는 HARQ-ACK 정보는 전송되는 것을 포함하는, 방법.
- 무선 통신 시스템에서 하이브리드 자동 재송 요구(HARQ)-확인응답(ACK) 정보를 송신하는 단말에 있어서, 상기 단말은:하나 이상의 송수신기(transceiver); 및상기 하나 이상의 송수신기와 연결된 하나 이상의 프로세서를 포함하고,상기 하나 이상의 프로세서는:제 2 HARQ-ACK 보고 모드와 관련되는 N(N>1) 개의 HARQ-ACK 정보 비트를 생성하고; 및하나의 물리상향링크제어채널(PUCCH)에서, 제 1 HARQ-ACK 보고 모드에 따르는 제 1 방식, 또는 상기 N 개의 HARQ-ACK 정보 비트의 값에 기초하여 PUCCH 자원의 세트 중에서 하나의 PUCCH 자원을 선택하는 제 2 방식 중의 하나를 적용하여, HARQ-ACK 정보를 네트워크로 상기 하나 이상의 송수신기를 통하여 송신하도록 설정되고,상기 제 1 방식 또는 상기 제 2 방식 중의 하나는 상기 네트워크에 의한 설정에 기초하여 적용되는, 단말.
- 무선 통신 시스템에서 기지국이 하이브리드 자동 재송 요구(HARQ)-확인응답(ACK) 정보를 수신하는 방법에 있어서, 상기 방법은:하나 이상의 멀티캐스트 DCI 포맷 또는 하나 이상의 멀티캐스트 물리하향링크공유채널(PDSCH) 중의 하나 이상을 단말에게 송신하는 단계; 및상기 하나 이상의 DCI 포맷 또는 상기 하나 이상의 PDSCH 중의 하나 이상에 기초하여 생성되는 제 2 HARQ-ACK 보고 모드와 관련되는 N(N>1) 개의 HARQ-ACK 정보 비트에 대해서, 제 1 HARQ-ACK 보고 모드에 따르는 제 1 방식, 또는 상기 N 개의 HARQ-ACK 정보 비트의 값에 기초하여 PUCCH 자원의 세트 중에서 하나의 PUCCH 자원을 선택하는 제 2 방식 중의 하나가 적용된 HARQ-ACK 정보를, 하나의 물리상향링크제어채널(PUCCH)에서 상기 단말로부터 수신하는 단계를 포함하고,상기 제 1 방식 또는 상기 제 2 방식 중의 하나는 상기 기지국에 의한 설정에 기초하여 적용되는, 방법.
- 무선 통신 시스템에서 하이브리드 자동 재송 요구(HARQ)-확인응답(ACK) 정보를 수신하는 기지국에 있어서, 상기 기지국은:하나 이상의 송수신기; 및상기 하나 이상의 송수신기와 연결된 하나 이상의 프로세서를 포함하고,상기 하나 이상의 프로세서는:하나 이상의 멀티캐스트 DCI 포맷 또는 하나 이상의 멀티캐스트 물리하향링크공유채널(PDSCH) 중의 하나 이상을 단말에게 하나 이상의 송수신기를 통하여 송신하고; 및상기 하나 이상의 DCI 포맷 또는 상기 하나 이상의 PDSCH 중의 하나 이상에 기초하여 생성되는 제 2 HARQ-ACK 보고 모드와 관련되는 N(N>1) 개의 HARQ-ACK 정보 비트에 대해서, 제 1 HARQ-ACK 보고 모드에 따르는 제 1 방식, 또는 상기 N 개의 HARQ-ACK 정보 비트의 값에 기초하여 PUCCH 자원의 세트 중에서 하나의 PUCCH 자원을 선택하는 제 2 방식 중의 하나가 적용된 HARQ-ACK 정보를, 하나의 물리상향링크제어채널(PUCCH)에서 상기 단말로부터 하나 이상의 송수신기를 통하여 수신하도록 설정되고,상기 제 1 방식 또는 상기 제 2 방식 중의 하나는 상기 기지국에 의한 설정에 기초하여 적용되는, 기지국.
- 무선 통신 시스템에서 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, 제 1 항 내지 제 12 항 중 어느 한 항에 따른 방법을 수행하기 위한 명령들을 저장하는 하나 이상의 컴퓨터 메모리를 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 장치가, 제 1 항 내지 제 12 항 중 어느 한 항에 따른 방법을 수행하도록 제어하는, 컴퓨터 판독가능 매체.
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| EP22890459.5A EP4429142A4 (en) | 2021-11-04 | 2022-11-04 | METHOD AND DEVICE FOR TRANSMITTING OR RECEIVING HYBRID AUTOMATIC REPEAT REQUEST ACKNOWLEDGMENT INFORMATION IN A WIRELESS COMMUNICATION SYSTEM |
| JP2024525444A JP7802927B2 (ja) | 2021-11-04 | 2022-11-04 | 無線通信システムにおいてハイブリッド自動再送要求-確認応答情報の送信又は受信方法及び装置 |
| CN202280073601.8A CN118202595A (zh) | 2021-11-04 | 2022-11-04 | 在无线通信系统中发送或接收混合自动重传请求确认信息的方法和装置 |
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Non-Patent Citations (5)
| Title |
|---|
| ERICSSON: "Discussion on reliability mechanisms for NR MBS", 3GPP DRAFT; R1-2110356, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20211011 - 20211019, 1 October 2021 (2021-10-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052059289 * |
| LG ELECTRONICS INC.: "Mechanisms to improve Reliability of Broadcast/Multicast service", 3GPP DRAFT; R1-2109984, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Online; 20211011 - 20211019, 2 October 2021 (2021-10-02), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052058920 * |
| NTT DOCOMO, INC.: "Discussion on mechanisms to improve reliability for multicast for RRC_CONNECTED UEs", 3GPP DRAFT; R1-2109702, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20211011 - 20211019, 1 October 2021 (2021-10-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052058641 * |
| See also references of EP4429142A4 * |
| ZTE: "Discussion on mechanisms to Improve Reliability for RRC_CONNECTED UEs", 3GPP DRAFT; R1-2108852, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20211011 - 20211019, 30 September 2021 (2021-09-30), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052057734 * |
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| KR20240099162A (ko) | 2024-06-28 |
| EP4429142A1 (en) | 2024-09-11 |
| CN118202595A (zh) | 2024-06-14 |
| JP2024541999A (ja) | 2024-11-13 |
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