WO2023014010A1 - 무선 통신 시스템에서 제어 정보 송수신 방법 및 장치 - Google Patents
무선 통신 시스템에서 제어 정보 송수신 방법 및 장치 Download PDFInfo
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Definitions
- the present disclosure relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting and receiving uplink control information in a wireless communication system.
- 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 scheduling one or more downlink transmissions and/or one or more uplink transmissions through single downlink control information.
- a technical problem of the present disclosure is to provide a method and apparatus for transmitting and receiving hybrid automatic repeat and request (HARQ)-acknowledgement (ACK) information for one or more scheduled downlink transmissions through single downlink control information.
- HARQ hybrid automatic repeat and request
- ACK acknowledgenowledgement
- a method for transmitting and receiving control information in a wireless communication system includes setting information for a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) from a base station. receiving; Receiving, from the base station, downlink control information (DCI) for activation of the SPS PDSCH; and receiving at least one PDSCH based on the DCI from the base station.
- SPS semi-persistent scheduling
- PDSCH physical downlink shared channel
- DCI downlink control information
- TDRA time domain resource assignment
- SIV single start and length indicator value
- a method for transmitting and receiving control information in a wireless communication system includes setting information for a semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) to a terminal. Transmitting; Transmitting, to the terminal, downlink control information (DCI) for activating the SPS PDSCH; and transmitting at least one PDSCH to the terminal based on the DCI.
- SPS semi-persistent scheduling
- DCI downlink control information
- TDRA time domain resource assignment
- SIV single start and length indicator value
- a method and apparatus for scheduling one or more downlink transmissions and/or one or more uplink transmissions through single downlink control information may be provided.
- a method and apparatus for transmitting and receiving hybrid automatic repeat and request (HARQ)-acknowledgement (ACK) information for one or more downlink transmissions scheduled through a single downlink control information are provided.
- HARQ hybrid automatic repeat and request
- ACK acknowledgenowledgement
- 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 illustrates a HARQ-ACK process for downlink data in a wireless communication system to which the present disclosure can be applied.
- FIG. 8 illustrates a process and structure of a TB in a wireless communication system to which the present disclosure can be applied.
- FIG 9 illustrates a CBG-based HARQ process in a wireless communication system to which the present disclosure can be applied.
- 10 is an example of a method of scheduling multiple PDSCHs according to an embodiment of the present disclosure.
- 11 is an example of a method of scheduling multiple PXSCHs according to an embodiment of the present disclosure.
- 12 is an example of a method of scheduling multiple PDSCHs based on multiple M-DCIs according to an embodiment of the present disclosure.
- DAI downlink assignment indicator
- FIG. 14 is a diagram illustrating a signaling procedure between a base station and a terminal for a method for transmitting and receiving control information according to an embodiment of the present disclosure.
- 15 is a diagram illustrating an operation of a terminal for a method for transmitting and receiving control information according to an embodiment of the present disclosure.
- 16 is a diagram illustrating an operation of a base station for a method for transmitting and receiving control information according to an embodiment of the present disclosure.
- FIG. 17 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 is uniquely identified by an index pair (k, l').
- l' 0,...,2 ⁇ N symb ( ⁇ ) -1 is a symbol in a subframe indicates the location of
- an index pair (k, l) is used.
- l 0,...,N symb ⁇ -1.
- the resource element (k,l') for ⁇ and antenna port p corresponds to a complex value a k,l' (p, ⁇ ) .
- indices p and ⁇ may be dropped, resulting in a complex value of a k,l' (p) or It can be a k,l' .
- Point A serves as a common reference point of the resource block grid and is obtained as follows.
- OffsetToPointA for primary cell (PCell) 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 instruct the UE to schedule one or more PUSCHs in one cell or configured grant (CG: configure grant) downlink feedback information.
- 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.
- FIG. 7 illustrates a HARQ-ACK process for downlink data in a wireless communication system to which the present disclosure can be applied.
- the UE can detect PDCCH in slot #n.
- the PDCCH includes downlink scheduling information (eg, DCI formats 1_0 and 1_1), and the PDCCH indicates a DL assignment-to-PDSCH offset (K0) and a PDSCH-HARQ-ACK reporting offset (K1).
- DCI formats 1_0 and 1_1 may include the following information.
- -Frequency domain resource assignment Indicates RB resources (eg, one or more (dis)continuous RBs) allocated to the PDSCH
- K0 indicating the start position (eg, OFDM symbol index) and length (eg, number of OFDM symbols) of the PDSCH in the slot
- HARQ process ID (Identity) for data (eg, PDSCH, TB)
- - PUCCH resource indicator Indicates a PUCCH resource to be used for UCI transmission among a plurality of PUCCH resources in a PUCCH resource set
- the UE may receive PDSCH in slot #(n+K0) according to the scheduling information of slot #n, and then transmit UCI through PUCCH in slot #(n+K1).
- UCI includes a HARQ-ACK response for PDSCH. If the PDSCH is configured to transmit up to 1 TB, the HARQ-ACK response may consist of 1-bit. When the PDSCH is configured to transmit up to two TBs, the HARQ-ACK response may consist of 2-bits if spatial bundling is not configured and 1-bit if spatial bundling is configured.
- the UCI transmitted in slot #(n+K1) includes HARQ-ACK responses for the plurality of PDSCHs.
- CBG Code Block Group
- a transport block (TB)-based HARQ process is supported in LTE.
- a CBG-based HARQ process is supported along with a TB-based HARQ process.
- FIG. 8 illustrates a process and structure of a TB in a wireless communication system to which the present disclosure can be applied.
- the process of FIG. 8 may be applied to data of a DL-SCH (Shared Channel), PCH (Paging Channel), and MCH (Multicast Channel) transport channel.
- UL TB (or data of a UL transport channel) may be similarly processed.
- the transmitter adds a CRC (eg, 24-bit) (TB CRC) to the TB for error checking.
- TB CRC a CRC (eg, 24-bit)
- the transmitter may divide TB+CRC into a plurality of code blocks by considering the size of the channel encoder. For example, the maximum size of a code block in LTE is 6144-bits. Therefore, if the TB size is less than 6144-bits, no code blocks are formed, and if the TB size is greater than 6144-bits, the TB is divided into 6144-bit units and a plurality of code blocks are formed. Each code block is individually appended with a CRC (eg, 24-bit) (CB CRC) for error checking.
- CRC eg, 24-bit
- each code block undergoes channel coding and rate matching, it is put together to form a codeword.
- data scheduling and the corresponding HARQ process are performed in units of TB, and the CB CRC is used to determine early termination of TB decoding.
- FIG 9 illustrates a CBG-based HARQ process in a wireless communication system to which the present disclosure can be applied.
- data scheduling and the resulting HARQ process may be performed in units of CBG.
- the terminal may receive information about the number M of code block groups per transport block from the base station through a higher layer signal (eg, RRC signal) (S1602). Thereafter, the terminal may receive initial transmission of data from the base station (via PDSCH) (S1604).
- the data includes a transport block
- the transport block includes a plurality of code blocks
- the plurality of code blocks may be divided into one or more code block groups.
- some of the code block groups may include ceiling (K/M) code blocks, and the remaining code blocks may include flooring (K/M) code blocks.
- K represents the number of code blocks in the data.
- the terminal may feed back A/N information based on the code block group for data to the base station (S1606), and the base station may perform data retransmission based on the code block group (S1608).
- A/N information may be transmitted through PUCCH or PUSCH.
- the A/N information includes a plurality of A/N bits for data, and each A/N bit may represent each A/N response generated in units of code block groups for data.
- the payload size of the A/N information may be maintained the same based on M regardless of the number of code block groups constituting data.
- a dynamic HARQ-ACK codebook method and a quasi-static HARQ-ACK codebook method are supported.
- the HARQ-ACK (or A/N) codebook may be replaced with the HARQ-ACK payload.
- PDCCH related to DL scheduling includes counter-DAI (Downlink Assignment Index) and total-DAI.
- the counter-DAI represents a ⁇ CC, slot ⁇ scheduling order value calculated in the CC (Component Carrier) (or cell)-first method, and is used to designate the position of the A/N bit in the A/N codebook.
- total-DAI represents the slot-unit scheduling accumulation value up to the current slot, and is used to determine the size of the A/N codebook.
- the size of the A/N codebook is fixed (to the maximum value) regardless of the number of actually scheduled DL data.
- the (maximum) A / N payload (size) transmitted through one PUCCH in one slot includes all CCs configured for the UE and all DL scheduling slots for which the A / N transmission timing can be indicated ( Alternatively, the number of A/N bits corresponding to a combination of PDSCH transmission slots or PDCCH monitoring slots (hereinafter referred to as a bundling window) may be determined.
- the DL grant DCI includes PDSCH-to-A/N timing information
- the PDSCH-to-A/N timing information may have one of a plurality of values (eg, k).
- k a PDSCH is received in slot #m and PDSCH-to-A/N timing information in a DL grant DCI (PDCCH) scheduling the PDSCH indicates k
- the A/N information for the PDSCH is It can be transmitted in slot #(m+k).
- k ⁇ ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ may be given.
- the A/N information may include the maximum possible A/N based on the bundling window.
- the A/N information of slot #n may include the A/N corresponding to slot #(n-k). For example, if k ⁇ ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ , the A/N information of slot #n is transmitted from slot #(n-8) to slot #n regardless of actual DL data reception. Includes the A/N corresponding to slot #(n-1) (ie, the maximum number of A/Ns).
- the A/N information may be replaced with an A/N codebook and an A/N payload.
- a slot can be understood/replaced as a candidate opportunity for receiving DL data.
- the bundling window is determined based on the PDSCH-to-A/N timing based on the A/N slot, and the PDSCH-to-A/N timing set has a pre-defined value (eg, ⁇ 1, 2, 3, 4, 5, 6, 7, 8 ⁇ ), may be set by higher layer (RRC) signaling.
- RRC higher layer
- the dynamic/semi-static HARQ-ACK codebook configuration defined in the NR standard is as follows. If the UE is configured with the PDSCH HARQ-ACK-Codebook parameter set to semi-static, the UE determines reporting of the Type-1 HARQ-ACK codebook. (i.e. semi-static HARQ-ACK codebook). On the other hand, if the UE is set to the dynamically set PDSCH HARQ-ACK codebook (pdsch-HARQ-ACK-Codebook) (or pdsch-HARQ-ACK-Codebook-r16) parameter, the UE is Type-2 Determines reporting of the HARQ-ACK codebook (ie, dynamic HARQ-ACK codebook).
- pdsch-HARQ-ACK-Codebook or pdsch-HARQ-ACK-Codebook-r16
- radio resource management Radio resource management
- - SLIV Starting and Length Indicator Value (Indicative value for the starting symbol index and number of symbols in the slot of the PDSCH and / or PUSCH. Scheduling the corresponding PDSCH and / or PUSCH It can be set as a component of an entry constituting a TDRA field in a scheduling PDCCH.)
- BandWidth Part may be composed of continuous resource blocks (RBs) on the frequency axis.
- One numerology eg, SCS, CP length, slot / may correspond to mini-slot duration (slot/mini-slot duration, etc.
- multiple BWPs may be set in one carrier (the number of BWPs per carrier may also be limited), but activated ( The number of activated BWPs may be limited to a part (eg, 1) per carrier.)
- control resource set (CONtrol REsourse SET) (means a time-frequency resource area in which PDCCH can be transmitted, and the number of CORESETs per BWP may be limited.)
- -SFI Slot Format Indicator (an indicator indicating a symbol level DL/UL direction within a specific slot(s), transmitted through a group common PDCCH).
- QCL Quasi-Co-Location
- RS reference signals
- RS Reference Signal
- RS Doppler shift
- Doppler spread and average delay obtained from one RS
- average spread delay spread
- spatial reception parameter Spatial Rx parameter
- QCL parameters can also be applied to other RS (or the antenna port (antenna port (s)) of the corresponding RS))
- QCL types are defined as follows: 'typeA': ⁇ Doppler shift, Doppler spread, average delay, delay spread ⁇ , 'typeB': ⁇ Doppler shift, Doppler spread ⁇ , 'typeC ': ⁇ Doppler shift, average delay ⁇ , 'typeD': ⁇ Spatial Rx parameter ⁇ .
- TCI state is one such as DM-RS ports of PDSCH, DM-RS ports of PDCCH, or CSI-RS port(s) of CSI-RS resources
- TCI state index corresponding to each code point constituting the field
- CE control element
- the TCI state for each TCI state index is set through RRC signaling
- the corresponding TCI state is set between DL RS
- configuration between DL RS and UL RS or between UL RS and UL RS may be allowed.
- UL RS include SRS, PUSCH DM-RS, and PUCCH DM-RS.
- SRS resource indicator (SRS resource indicator) (Indicates one of the SRS resource index values set in 'SRS resource indicator' among fields in DCI scheduling PUSCH.
- SRS resource indicator (Indicates one of the SRS resource index values set in 'SRS resource indicator' among fields in DCI scheduling PUSCH.
- the PUSCH can be transmitted using the same spatial domain transmission filter used for reference signal transmission and reception, where the reference RS is transmitted to RRC signaling through the SRS-SpatialRelationInfo parameter for each SRS resource. It is set by, and SS/PBCH block, CSI-RS, or SRS can be set as reference RS.
- a corresponding DCI is referred to as M-DCI
- a DCI scheduling a single PDSCH (or PUSCH) is referred to as S-DCI.
- scheduling for transmission of a plurality of PDSCHs (or PUSCHs) through one DCI may be configured in a UE by higher layer signaling (eg, RRC signaling).
- Scheduling for transmission of a plurality of PDSCHs (or PUSCHs) may be configured through one DCI for each of one or more serving cells configured in the UE. For example, if information for setting scheduling for transmission of a plurality of PDSCHs (or PUSCHs) through one DCI is provided for a corresponding serving cell, transmission of a plurality of PDSCHs (or PUSCHs) through one DCI on the corresponding cell Scheduling for can be set / supported.
- a single PDSCH may be scheduled or multiple PDSCHs may be scheduled according to circumstances.
- only one SLIV is linked (linked) to a certain row index#A, and multiple SLIVs are linked (linked) to row index#B It can be.
- row index#A is indicated in the M-DCI
- the corresponding DCI may mean that only a single PDSCH is scheduled.
- row index#B is indicated in the M-DCI
- the corresponding DCI may mean that multiple PDSCHs are scheduled. there is.
- a single PDSCH case (single -PDSCH case), and a case in which multiple PDSCHs are scheduled through M-DCI is referred to as a multi-PDSCH case.
- a scheduling method for multiple PXSCHs in a Multi-PXSCH case ie, a Multi-PDSCH case and/or a Multi-PUSCH case
- a HARQ-ACK codebook (HCB) configuration method corresponding to M-DCI are proposed.
- a PXSCH representation to cover PDSCH and/or PUSCH may be used.
- a mmWave band (eg, from 7.125 or 24 GHz to 52.6 GHz) is defined as a frequency range 2 (FR2).
- the sub-carrier spacing (SCS) of the SS/PBCH block may be either 120 or 240 kHz, and 60 for other signals/channels (eg, PDCCH, PDSCH, PUSCH, etc.) or 120 kHz.
- FR3 In a high frequency NR system (eg, from more than 52.6 GHz to 71 GHz, named FR3 (or FR2-2) for convenience of explanation), larger SCSs may be introduced. If the scalability of the OFDM symbol duration and CP length defined in the current NR system is maintained, the OFDM symbol duration and CP length for each SCS can be defined with the lengths shown in Table 6 below.
- PDCCH monitoring may be performed in one slot per plurality of slots in consideration of the monitoring capability of the UE. Accordingly, an operation of scheduling a plurality of PDSCHs and/or a plurality of PUSCHs through one DCI may be introduced in consideration of a reduced PDCCH monitoring occasion area.
- the PDSCH and/or PUSCH indicated through such DCI may be indicated to be transmitted not only in FR3 (or FR2-2) but also in other frequency ranges. That is, the M-DCI proposed in the present disclosure is not limited to the NR system operating in FR3 (or FR2-2) and can be applied to other frequency domains as well.
- This embodiment relates to the maximum gap constraint between the first scheduled PXSCH and the last scheduled PXSCH in the Multi-PXSCH case.
- one row index constituting the TDRA table can be indicated through the TDRA field of DCI, and ⁇ SLIV, mapping type) for each row index , a combination of scheduling offsets K0/K2 ⁇ can be set.
- the scheduling offset value may be expressed as K0 in case of PDSCH and as K2 in case of PUSCH.
- a symbol level time domain resource position of a plurality of PXSCHs can be determined.
- the maximum gap (eg, slot level gap) between the first scheduled PXSCH and the last scheduled PXSCH is (allowed) of the scheduling offset value K0 / K2 (here, K0 for PDSCH and K2 for PUSCH) May be constrained to the difference between the maximum value and the (allowed) minimum value.
- the (allowed) maximum value of the DCI-to-PDSCH scheduling offset K0 value is 32 slots and the (allowed) minimum value is 0 slots
- the (allowed) maximum value of the DCI-to-PUSCH scheduling offset K2 is 32 slots and the (allowed) minimum value is 2 slots
- the 'allowed' maximum/minimum values described in this embodiment may mean maximum/minimum values that can be set for a carrier through which PXSCH is transmitted.
- the meaning of the 'allowed' maximum / minimum value described in this embodiment is, if (in addition to the maximum / minimum value that can be set for the carrier through which the PXSCH is transmitted), the maximum value (or minimum value) of K0 and / or K2 value) is set/instructed, it may mean less than the corresponding maximum value (or more than the minimum value).
- This embodiment relates to a method of dropping some PXSCHs scheduled through M-DCI by utilizing a rate matching indicator or an invalid symbol pattern indicator.
- the rate matching indicator may be for PDSCH
- an invalid symbol pattern indicator may be for PUSCH.
- this embodiment proposes a specific drop condition related to the above-described drop scheme.
- a specific resource region may be determined to be unavailable for PDSCH mapping.
- transmission and reception of the corresponding PDSCH(s) may be omitted.
- corresponding base station signaling may include higher layer signaling such as RRC signaling, layer 1 signaling, and the like.
- a specific resource region may be determined to be invalid for PUSCH reception by an indication according to an invalid symbol pattern indicator on DCI.
- transmission and reception of the corresponding PUSCH(s) may be omitted.
- corresponding base station signaling may include higher layer signaling such as RRC signaling, layer 1 signaling, and the like.
- the following three methods (ie, methods 1 to 3) may be considered. At least one of the three methods described below may be defined/defined to be applied, or one of the methods described below may be determined by setting/instruction of the base station.
- Method 1 If the entire resource region of a specific PDSCH among a plurality of scheduled PDSCHs is completely included (or partially overlaps) in 'unavailable resources', transmission and reception of the corresponding PDSCH may be omitted.
- Method 2 Even if the entire resource area of a specific PDSCH is not included in 'unavailable resources', the DMRS resource area of the corresponding PDSCH and the 'unavailable resource' area fully overlap (or partially overlap) overlap)), transmission and reception of the corresponding PDSCH may be omitted.
- the specific threshold value may be a specific fixed value (eg, 0.95), a value defined in advance, or a value set by higher layer signaling.
- the following three methods may be considered. At least one of the three methods described below may be defined/defined to be applied, or one of the methods described below may be determined by setting/instruction of the base station.
- Method A If the entire resource region of a specific PUSCH among a plurality of scheduled PUSCHs is completely included in 'invalid resources' (or partially overlaps), transmission and reception of the corresponding PUSCH may be omitted.
- Method B Even if the entire resource area of a specific PUSCH is not included in the 'invalid resource', the DMRS resource area of the corresponding PUSCH and the 'invalid resource' area fully overlap (or partially overlap) overlap)), transmission and reception of the corresponding PUSCH may be omitted.
- the specific threshold value may be a specific fixed value (eg, 0.95), a value defined in advance, or a value set by higher layer signaling.
- activation of the semi-persistent scheduling (SPS) PDSCH may be performed by the method shown in Table 7 below (eg, refer to TS 38.213 v16.6.0, section 10.2).
- PDCCH validation for DL SPS and UL grant Type 2 A UE validates, for scheduling activation or scheduling release, a DL SPS assignment PDCCH or a configured UL grant Type 2 PDCCH if - the CRC of a corresponding DCI format is scrambled with a CS-RNTI provided by cs-RNTI , and - the new data indicator field in the DCI format for the enabled transport block is set to '0', and - the DFI flag field, if present, in the DCI format is set to '0', and - if validation is for scheduling activation and if the PDSCH-to-HARQ_feedback timing indicator field in the DCI format is present, the PDSCH-to-HARQ_feedback timing indicator field does not provide an inapplicable value from dl-DataToUL-ACK-r16 .
- a UE is provided a single configuration for UL grant Type 2 PUSCH or for SPS PDSCH, validation of the DCI format is achieved if all fields for the DCI format are set according to Table 10.2-1 or Table 10.2-2.
- Table 10.2-1 "Special fields for single DL SPS or single UL grant Type 2 scheduling activation PDCCH validation when a UE is provided a single SPS PDSCH or UL grant Type 2 configuration in the active DL/UL BWP of the scheduled cell", regarding 'DCI format 1_1', for the enabled transport block, Redundancy version set to all '0's.
- a value of the HARQ process number field in a DCI format indicates an activation for a corresponding UL grant Type 2 PUSCH or for a SPS PDSCH configuration with a same value as provided by ConfiguredGrantConfigIndex or by sps-
- Validation of the DCI format is achieved if the RV field for the DCI format is set as in Table 10.2-3. If a UE is provided more than one configuration for UL grant Type 2 PUSCH or for SPS PDSCH - if the UE is provided ConfiguredGrantConfigType2DeactivationStateList or sps-ConfigDeactivationStateList , a value of the HARQ process number field in a DCI format indicates a corresponding entry for scheduling release of one or more UL grant Type 2 PUSCH or SPS PDSCH configurations - if the UE is not provided ConfiguredGrantConfigType2DeactivationStateList or sps-ConfigDeactivationStateList , a value of the HARQ process number field in a DCI format indicates a release for a corresponding UL grant Type 2 PUSCH or for a SPS PDSCH configuration with a same value as provided by ConfiguredGrantConfigIndex or by sps-ConfigIndex , respectively Valid
- the UE If validation is achieved, the UE considers the information in the DCI format as a valid activation or valid release of DL SPS or configured UL grant Type 2. If validation is not achieved, the UE discards all the information in the DCI format A UE is expected to provide HARQ-ACK information in response to a SPS PDSCH release after N symbols from the last symbol of a PDCCH providing the SPS PDSCH release.
- the resource location within the slot of the activated SPS configuration may be determined by the SLIV value indicated in the TDRA field on the corresponding SPS PDSCH activation DCI.
- SPS PDSCH activation is performed through M-DCI, since multiple SLIVs may be linked to a specific row index indicated through the TDRA field on M-DCI, resource location in the slot of SPS PDSCH Decisions can be ambiguous.
- SPS activation through the corresponding M-DCI can be set/regulated to be allowed.
- the UE when actually activating the SPS through the corresponding M-DCI, the UE can expect the TDRA row index associated with only a single SLIV to be indicated through the corresponding M-DCI.
- the DCI restricts scheduling resources for only one PDSCH, thereby eliminating ambiguity about the SPS PDSCH resource of the terminal and implementing the terminal This has the effect of reducing complexity.
- the terminal may consider only a specific SLIV (eg, the first SLIV, the last SLIV) among a plurality of SLIVs linked to the indicated TDRA row index as valid. In the case of this method, the terminal may determine the time resource position of the SPS PDSCH based on the specific SLIV information, and determine the HARQ-ACK bit position when configuring the HARQ-ACK timing and HARQ-ACK codebook.
- a specific SLIV eg, the first SLIV, the last SLIV
- the terminal when configuring the HARQ-ACK codebook (in particular, when configuring the type-1 HARQ-ACK codebook), the terminal can transmit ACK/NACK information for the SPS PDSCH at the HARQ-ACK bit position corresponding to the corresponding SLIV.
- CG uplink configured grant
- the resource location in the slot of the activated CG configuration can be determined by the SLIV value indicated in the TDRA field on the corresponding CG PUSCH activation DCI.
- CG PUSCH activation is performed through M-DCI, since multiple SLIVs may be interlocked with a specific row index indicated through the TDRA field on M-DCI, resource location in the slot of CG PUSCH Decisions can be ambiguous.
- CG activation through the corresponding M-DCI can be set/regulated so as to be allowed.
- the terminal when actually activating the CG through the corresponding M-DCI, the terminal can expect the TDRA row index associated with only a single SLIV to be indicated through the corresponding M-DCI.
- the DCI restricts scheduling resources for only one PUSCH, thereby eliminating ambiguity about the CG PUSCH resource of the terminal and implementing the terminal This has the effect of reducing complexity.
- the terminal may consider only a specific SLIV (eg, the first SLIV, the last SLIV) among a plurality of SLIVs linked to the indicated TDRA row index as valid.
- the UE may determine the time resource location of the CG PUSCH based on the specific SLIV information.
- a method of considering only the last SLIV among a plurality of SLIVs linked to the TDRA row index indicated through SPS activation M-DCI as valid can be considered.
- a method in which only the first SLIV among multiple SLIVs linked to the TDRA row index indicated through the CG activation M-DCI is considered valid can be considered.
- the condition in Table 7 described above is a condition in which all RV values corresponding to enabled TBs of PDSCHs scheduled through a specific SLIV (eg, first SLIV, last SLIV) value among a plurality of SLIVs must be set to 0 can be replaced with
- the specific SLIV may be set based on invalid SLIV(s) among a plurality of SLIVs.
- the condition in Table 7 described above may be replaced with a condition in which all RV values corresponding to enabled TBs of PDSCHs scheduled through all SLIV values among a plurality of SLIVs must be set to 0.
- all SLIVs may be set based on invalid SLIV(s) among a plurality of SLIVs.
- deactivation or release of the SPS PDSCH may be performed by the method shown in Table 7 described above (eg, refer to TS 38.213 v16.6.0, section 10.2).
- the HARQ-ACK bit position can be determined by the SLIV value indicated in the TDRA field on the corresponding SPS PDSCH deactivation DCI when configuring the HARQ-ACK timing and / or HARQ-ACK codebook.
- the HARQ-ACK timing And / or HARQ-ACK codebook configuration may be ambiguous.
- SPS deactivation through the corresponding M-DCI can be set/regulated to be allowed.
- the UE can expect the TDRA row index associated with only a single SLIV to be indicated through the corresponding M-DCI.
- the DCI restricts scheduling resources for only one PDSCH, thereby eliminating ambiguity about the SPS PDSCH resource of the terminal and implementing the terminal This has the effect of reducing complexity.
- the terminal may consider only a specific SLIV (eg, the first SLIV, the last SLIV) among a plurality of SLIVs linked to the indicated TDRA row index as valid. In the case of this method, the terminal may determine the HARQ-ACK bit position when configuring the HARQ-ACK timing and / or HARQ-ACK codebook based on the specific SLIV information.
- the last SLIV The SPS PDSCH may be deactivated based on ⁇ slot n+2, SLIV#2 ⁇ .
- the HARQ-ACK timing corresponding to the SPS PDSCH can be determined, and when configuring the HARQ-ACK codebook (in particular, when configuring the type-1 HARQ-ACK codebook), the terminal ACK/NACK information for the SPS PDSCH may be transmitted at a corresponding HARQ-ACK bit position.
- a HARQ-ACK codebook is configured by configuring one sub-codebook (sub-CB) corresponding to a single PDSCH case and configuring another sub-CB corresponding to a multi-PDSCH case. / It is about the way to create it.
- Type-2 HCB when configuring the sub-CB corresponding to the multi-PDSCH case, it is set/regulated to generate the HCB based on the maximum number of schedulable PDSCHs regardless of the number of PDSCHs actually scheduled in the M-DCI.
- a sub-CB corresponding to a multi-PDSCH case if the UE receives only one M-DCI, the UE receives HARQ corresponding to the number of actually scheduled PDSCHs, not the maximum number of schedulable PDSCHs. -ACK bit can be set to configure the corresponding sub-CB.
- the UE when constructing a sub-CB corresponding to a multi-PDSCH case, even when a UE receives multiple M-DCIs, the UE has the maximum number of PDSCHs that can be scheduled exceptionally for the last M-DCI received last. Instead, it may be set to configure the corresponding sub-CB with HARQ-ACK bits corresponding to the number of actually scheduled PDSCHs.
- the above-described method may cause ambiguity in a specific situation, such as a situation in which M_DCI is set in a plurality of cells.
- a non-CA case a single DL carrier (or single DL serving cell) operation in which CA (carrier aggregation) is not set
- CA carrier aggregation
- M-DCI case M-DCI case
- a method of configuring three sub-CBs and a method of configuring two sub-CBs may also be considered. At this time, it may be determined according to which of the two methods the Type-2 HCB will be configured by capability information signaling of the UE and/or base station configuration.
- This embodiment relates to a downlink assignment indicator (DAI) counting scheme when multiple DCIs are received in one PDCCH monitoring occasion (MO).
- DCI downlink assignment indicator
- the terminal may inform the base station whether to support type2-HARQ-ACK-Codedbook through terminal capability information signaling.
- the corresponding capability information means that the UE can receive multiple PDSCH scheduling DCIs in the same PDCCH MO, and in this case, a rule of counting the DAI value first from the DCI having the earliest corresponding PDSCH reception timing among the two DCIs has been defined.
- Table 8 is an example of existing DAI counting rules (eg, see TS 38.213 v16.6.0, section 9.1.3.1).
- a UE determines monitoring occasions for PDCCH with DCI format scheduling PDSCH receptions or SPS PDSCH release or indicating SCell dormancy on an active DL BWP of a serving cell c, as described in clause 10.1, and for which the UE transmits HARQ-ACK information in a same PUCCH in slot n based on - PDSCH-to-HARQ_feedback timing indicator field values for PUCCH transmission with HARQ-ACK information in slot n in response to PDSCH receptions, SPS PDSCH release or SCell dormancy indication - slot offsets K 0 [6, TS 38.214] provided by time domain resource assignment field in a DCI format scheduling PDSCH receptions and by pdsch-AggregationFactor, or pdsch-AggregationFactor-r16, or repetitionNumber, when provided.
- the set of PDCCH monitoring occasions for a DCI format scheduling PDSCH receptions or SPS PDSCH release or indicating SCell dormancy is defined as the union of PDCCH monitoring occasions across active DL BWPs of configured serving cells. PDCCH monitoring occasions are indexed in an ascending order of their start times. The cardinality of the set of PDCCH monitoring occasions defines a total number M of PDCCH monitoring occasions.
- the DAI value can be counted based on the reception timing of a certain PDSCH. may become ambiguous.
- a rule is defined to count the DAI value based on the PDSCH reception timing corresponding to a specific SLIV (eg, the first SLIV, the last SLIV) among a plurality of SLIVs linked to the TDRA row index indicated on the M-DCI. it can be done
- the method or semi-static UL configuration (eg, configuration through tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) in the above-described embodiment 2 and Transmission and reception of a PDSCH corresponding to a specific SLIV may be canceled/dropped/skipped due to a collision or the like.
- a rule may be determined to count the DAI value based on the PDSCH reception timing corresponding to a specific SLIV among a plurality of SLIVs linked to the TDRA row index indicated on M_DCI.
- the corresponding specific SLIV may be the first 'transmission' SLIV or the last 'transmission' SLIV.
- Tables 9 to 11 are examples of DAI counting rules according to the method proposed in this embodiment.
- the DAI value may be counted based on the first PDSCH reception start point.
- the DAI value may be counted based on the first scheduled PDSCH reception start point.
- the DAI value may be counted based on the first transmitted PDSCH reception start point.
- This embodiment relates to an out-of-order (OoO) handling scheme in a multi-PXSCH case.
- OoO out-of-order
- out-of-order related items for the PDSCH are defined. Specifically, when the 1st PDSCH and the 2nd PDSCH are distinguished according to the time axis precedence relationship of scheduled resources, the HARQ-ACK slot j corresponding to the 1st PDSCH is set, and the HARQ-ACK slot corresponding to the 2nd PDSCH When i is set, a situation where i ⁇ j can be defined as ouf-of-order, and the terminal may not expect such an out-of-order situation (e.g., TS 38.213 v15.13.0, section 5.1 reference). This is because the complexity of UE implementation may increase if the PDSCH order and the HARQ-ACK transmission order are reversed from the UE side.
- 10 is an example of a method of scheduling multiple PDSCHs according to an embodiment of the present disclosure.
- a first M-DCI (ie, M-DCI#1) includes a plurality of PDSCHs (ie, PDSCH#1, PDSCH#2, and PDSCH#3) in non-contiguous slots. ), and the second M-DCI (ie, M-DCI #2) may schedule multiple PDSCHs (ie, PDSCH # 4 and PDSCH # 5) on slots N + 4 and slot N + 5 .
- the HARQ-ACK timing indicated through the first M-DCI is slot N+10 and the HARQ-ACK timing indicated through the second M-DCI is slot N+11, PDSCH#1 and PDSCH#4/ No out-of-order situation occurs between PDSCH#5. However, in this case, an out-of-order situation may occur between PDSCH#2/PDSCH#3 and PDSCH#4/PDSCH#5. Therefore, when the HARQ-ACK timing corresponding to each DCI (or M-DCI) is different during scheduling as shown in FIG. 10, an out-of-order situation may occur between some PDSCHs.
- the UE considers that scheduling for PDSCH(s) not related to the out-of-order situation is valid and scheduling for PDSCH(s) related to the out-of-order situation is invalid. Can be set/prescribed. In this case, when the UE feeds back the HARQ-ACK information, the HARQ-ACK bit(s) corresponding to the PDSCH(s) deemed invalid are padded with NACK, or the corresponding PDSCH(s) Corresponding HARQ-ACK bit(s) may be omitted.
- PDSCH#1/PDSCH#4/PDSCH#5 not related to the out-of-order situation are valid, and PDSCH#2/PDSCH related to the out-of-order situation are valid. #3 can be considered invalid.
- the HARQ-ACK bit(s) corresponding to PDSCH#2/PDSCH#3 are padded with NACK or PDSCH#2/PDSCH#3 HARQ-ACK bit(s) corresponding to may be omitted.
- the UE determines that PDSCH#1 not related to the out-of-order situation is valid and PDSCH#2/PDSCH#3/PDSCH#4/PDSCH#5 related to the out-of-order situation are not valid.
- the UE feeds back HARQ-ACK information through slot N+10, the HARQ-ACK bit(s) corresponding to PDSCH#2/PDSCH#3 are padded with NACK or PDSCH#2/PDSCH#3 HARQ-ACK bit(s) corresponding to may be omitted.
- the HARQ-ACK bit(s) corresponding to PDSCH#4/PDSCH#5 are padded with NACK, or PDSCH#4/PDSCH#5 Corresponding HARQ-ACK bit(s) may be omitted.
- the UE may ignore/discard the DCI corresponding to the PDSCH(s) related to the out-of-order situation.
- the HARQ-ACK bit(s) corresponding to the PDSCH(s) scheduled through the corresponding DCI are padded with NACK, or the HARQ-ACK corresponding to the corresponding PDSCH(s) ACK bit(s) may be omitted.
- the UE may consider that the first DCI (ie, M-DCI#1) corresponding to PDSCH#2/PDSCH#3 related to the out-of-order situation is invalid. there is.
- the UE feeds back HARQ-ACK information through slot N+10
- HARQ-ACK bit(s) may be padded with NACK
- HARQ-ACK bit(s) corresponding to PDSCH#1/PDSCH#2/PDSCH#3 may be omitted
- HARQ-ACK information feedback itself may be omitted.
- the UE may select some DCIs (eg, a DCI received first or a DCI received later) among a plurality of DCIs (including M-DCI). can be ignored/discarded.
- some DCIs eg, a DCI received first or a DCI received later
- M-DCI M-DCI
- the UE feeds back HARQ-ACK information the HARQ-ACK bit(s) corresponding to the PDSCH(s) scheduled through the corresponding DCI are padded with NACK, or the HARQ-ACK corresponding to the corresponding PDSCH(s) ACK bit(s) may be omitted.
- the terminal since an out-of-order situation has occurred, the terminal receives the first DCI (ie, M-DCI#1) and the second DCI (ie, M-DCI#2).
- the first DCI may be considered invalid.
- HARQ-ACK bit(s) may be padded with NACK
- HARQ-ACK bit(s) corresponding to PDSCH#1/PDSCH#2/PDSCH#3 may be omitted
- HARQ-ACK information feedback itself may be omitted.
- the UE describes that an out-of-order situation will occur between any two PDSCHs for a plurality of PDSCHs scheduled by different DCIs (each scheduling one or more PDSCHs) It may be stipulated not to do so.
- a plurality of PDSCH opportunities scheduled by one DCI are configured as one transport block (TB), individual (individual)
- Different methods may be applied depending on whether the TB is configured. For example, when configured with individual TBs, the UE can perform HARQ-ACK feedback by determining the effectiveness of individual PDSCHs. On the other hand, when configured with one TB, the UE can perform HARQ-ACK feedback by determining the validity of each DCI.
- This embodiment sets/guarantees a gap for performing beam switching and/or Listen Before Talk (LBT) when a reception (or transmission) beam is changed in the middle during continuous PDSCH reception (or PUSCH transmission). It's about how to do it.
- LBT Listen Before Talk
- 11 is an example of a method of scheduling multiple PXSCHs according to an embodiment of the present disclosure.
- PXSCH#1, PXSCH#2, PXSCH#3, and PXSCH#4 are scheduled through one M-DCI.
- the preceding two PXSCHs ie, PXSCH#1 and PXSCH#2
- the remaining two PXSCHs ie, PXSCH#3 and PXSCH#4
- may be configured to be transmitted and received eg, PUSCH transmission, PDSCH reception
- the terminal may perform PXSCH transmission and reception by changing the beam after transmission and reception of PXSCH # 2.
- the beam change time hereinafter, beam switching gap, BSG
- BSG beam switching gap
- a gap (referred to as LBT gap) considering the channel access procedure (Channel Access Procedure, CAP) of the unlicensed band may be required.
- CAP Channel Access Procedure
- Different beams (direction or index) in the present disclosure may mean that there is no QCL relationship, or that the QCL sources constituting the TCI state corresponding to the corresponding PXSCH are different, or It may mean that spatial relation information corresponding to the corresponding PXSCH is different.
- a beam (direction or index) in the present disclosure may mean a TCI state corresponding to a corresponding PXSCH or spatial relationship information corresponding to the corresponding PXSCH.
- PXSCH in the present disclosure may mean a (valid) PXSCH that is not dropped/skipped due to collision with a DL/UL symbol set by a semi-static RRC parameter.
- PXSCH in the present disclosure may refer to a PXSCH scheduled through DCI (regardless of collision with a DL/UL symbol configured by a semi-static RRC parameter).
- the value corresponding to the LBT gap and / or BSG may be defined in advance or set / instructed through higher layer signaling (eg, RRC signaling, MAC-CE, etc.) and / or DCI.
- higher layer signaling eg, RRC signaling, MAC-CE, etc.
- the base station may be configured/defined to drop/skip transmission of PDSCH#3 (or PDSCH#2). In this case, the terminal may not expect reception of the corresponding PDSCH#3 (or PDSCH#2).
- the base station may be set/regulated not to transmit some symbols of PDSCH#3 (or PDSCH#2) (eg, the first N symbols for PDSCH#3 and the last M symbols for PDSCH#2). can In this case, when the terminal receives PDSCH#3 (or PDSCH#2) excluding N symbols of PDSCH#3 (or M symbols of PDSCH#2), the corresponding N symbols (or M symbols) are rate-matching ) or punctured.
- Example 3 When the above-described value of N (or M) is equal to or less than the specific value K, the above-described Example 1 or Example 2 may be applied.
- the specific value K may be defined in advance (eg, 2), set/instructed through higher layer signaling (eg, RRC signaling, MAC_CE), or DCI.
- the N (or M) value may be the (minimum) number of symbols required to make a gap over the LBT gap and / or BSG.
- the above-described "gap between PDSCH # 2 and PDSCH # 3" may always be defined to be scheduled with a value greater than or equal to the LBT gap and / or BSG, and the terminal can expect to be scheduled in this way. If, through a specific M-DCI, the aforementioned "gap between PDSCH # 2 and PDSCH # 3" is scheduled smaller than the LBT gap and / or BSG, the UE can operate to discard the corresponding M-DCI there is.
- the UE may be configured/defined to drop/skip PUSCH#3 (or PUSCH#2) transmission. In this case, the base station may not expect reception of the corresponding PUSCH#3 (or PUSCH#2).
- the UE may be configured/regulated not to transmit some symbols of PUSCH#3 (or PUSCH#2) (eg, the first N symbols for PUSCH#3 and the last M symbols for PUSCH#2). can That is, the UE may perform rate matching or puncturing on corresponding N symbols (or M symbols).
- the base station receives PUSCH#3 (or PUSCH#2) excluding N symbols of PUSCH#3 (or M symbols of PUSCH#2), the corresponding N symbols (or M symbols) are rate matching or punctured can be assumed
- Example C When the above-described value of N (or M) is less than or equal to a specific value K, the above-described example A or example B may be applied.
- the specific value K may be defined in advance (eg, 2), set/instructed through higher layer signaling (eg, RRC signaling, MAC_CE), or DCI.
- the N (or M) value may be the (minimum) number of symbols required to make a gap over the LBT gap and / or BSG.
- the above-described "gap between PUSCH#2 and PUSCH#3" may always be defined to be scheduled with a value greater than or equal to the LBT gap and/or BSG, and the UE may expect to be scheduled in this way. If, through a specific M-DCI, the above-described "gap between PUSCH # 2 and PUSCH # 3" is scheduled smaller than the LBT gap and / or BSG, the UE can operate to discard the corresponding M-DCI there is.
- scheduling through M-DCI is taken as an example, but the method proposed in this embodiment also schedules PXSCH#2 and PXSCH#3 through multiple DCIs and/or multiple M-DCIs, respectively.
- PXSCH#1 and PXSCH#2 are scheduled through a first DCI (ie, M-DCI#1)
- PXSCH#3 and PXSCH#4 are scheduled through a second DCI (ie, M-DCI#2). You can also schedule.
- beam information corresponding to PXSCH #2 and PXSCH #3 may be directly indicated in the corresponding DCI, or part of the beam information may be directly indicated through the DCI and the rest may be determined by a preset rule, etc. Alternatively, all of the beam information may be determined by a pre-set rule or the like. For example, if the offset between DCI and PDSCH#2 is less than timeDurationForQCL, beam information set to the lowest index CORESET in the PDCCH monitoring slot closest to PDSCH#2 (or PDSCH#1) may be applied to corresponding PDSCH#2. . If the offset between DCI and PDSCH#3 is equal to or greater than timeDurationForQCL, beam information indicated through DCI may be applied to PDSCH#3.
- the timeDurationForQCL information may mean a threshold value set/prescribed to distinguish a beam application method through comparison with a time offset between a DCI and a PDSCH scheduled by the corresponding DCI (e.g., TS 38.214 section 5.1. 5).
- This embodiment relates to a method of handling out-of-order scheduling issues when scheduling through M-DCI.
- the existing out-of- An order rule (or a newly introduced out-of-order rule) is applied, and the UE may not expect out-of-order scheduling for all PDSCHs.
- the corresponding PDSCH may be a PDSCH based on SLIV set in a row index (hereinafter, option 1), or higher layer signaling (eg, tdd-UL-DL-ConfigurationCommon or tdd-DL-UL- ConfigurationDedicated) may mean only PDSCHs that do not overlap with UL symbol(s) set (hereinafter, option 2).
- 12 is an example of a method of scheduling multiple PDSCHs based on multiple M-DCIs according to an embodiment of the present disclosure.
- a rule for dropping some PDSCH(s) may be set/regulated in consideration of UE implementation complexity.
- 'span 1' and M-DCI# It may mean a case where 'span 2' from the first PDSCH to which reception is instructed from 2 to the last PDSCH overlaps.
- the corresponding PDSCH may be a PDSCH based on SLIV set in a row index (hereinafter, option A), or higher layer signaling (eg, tdd-UL-DL-ConfigurationCommon or tdd-DL-UL- ConfigurationDedicated) may mean only PDSCHs that do not overlap with UL symbol(s) set (hereinafter, option B). That is, even if interlace PDSCH scheduling is based on the set SLVI, if it is not interlaced PDSCH scheduling based on an effective SLIV to which option B is applied, it is not considered as out-of-order scheduling, and the PDSCH may not be dropped.
- option A SLIV set in a row index
- option B higher layer signaling
- At least one of the following out-of-order rules may be applied.
- the DCI (eg, M-DCI#1 in FIG. 12) scheduling the fastest PDSCH (eg, PDSCH1 in FIG. 12) is faster than the scheduled PDSCH(s) and other DCIs (eg, M-DCI#2 in FIG. 12) ), a rule may be set/prescribed to drop PDSCH (eg, PDSCHa, PDSCHb in FIG. 12) transmission.
- the DCI (eg, M-DCI#2 in FIG. 12) that scheduled the latest PDSCH (eg, PDSCHc in FIG. 12) is slower than the scheduled PDSCH(s) and other DCIs (eg, M-DCI#1 in FIG. 12) ), a rule may be set/prescribed to drop transmission of PDSCHs (eg, PDSCH3 and PDSCH4 in FIG. 12) scheduled for.
- This embodiment relates to a method for configuring a type-2 HARQ-ACK codebook (HCB) according to whether HARQ operation is enabled/disabled.
- HLB HARQ-ACK codebook
- the type-2 HCB may include an enhanced type-2 HCB.
- type-2 HCB in the case where the number of HPNs enabled for HARQ operation is 1 (or 0) and the number of disabled HPNs is K-1 (or K) Suggest how to configure
- a single codebook may be configured for a single-PDSCH case and a multi-PDSCH case corresponding to a cell.
- configuring a single CB may mean a structure in which C-DAI/T-DAI values are counted and signaled by considering both the single-PDSCH case and the multi-PDSCH case. That is, in configuring a single CB, the order and/or the total of scheduled DCI/PDSCHs may be determined/signaled without distinction for each case.
- single-PDSCH DCI is set within the corresponding PUCCH cell group.
- a single CB can be configured by (commonly) counting the DAI values for the PDSCH case and the multi-PDSCH case together. At this time, it can be done in parallel without independently counting the DAI for the single-PDSCH case and the multi-PDSCH case and not configuring individual sub-CBs.
- individual DAI fields / information are not configured / indicated for single-PDSCH case and multi-PDSCH case through UL grant DCI, and only one common DAI field / information may be configured / indicated.
- type- 2 Suggests how to configure HCB.
- the number of HPNs for which HARQ operation is enabled is N (N>1) and the HPNs are disabled.
- one sub-CB (hereinafter referred to as a first sub-CB) corresponding to a single-PDSCH case is configured, and another sub-CB corresponding to a multi-PDSCH case. (hereinafter, a second sub-CB) may be configured.
- configuring individual sub-CBs may mean a structure in which C-DAI/T-DAI values are independently determined and signaled for each sub-CB. That is, the order and/or total sum of DCI/PDSCHs scheduled for each sub-CB may be independently determined/signaled.
- the UE when the number of HPNs enabled is 1 or less among HPNs scheduled through M-DCI (or S-DCI), the UE transmits the HARQ-ACK bit(s) corresponding to the corresponding DCI to the 1st sub -Can be mapped to CB.
- the UE maps the HARQ-ACK bit(s) corresponding to the corresponding DCI to the second sub-CB. can do.
- the number of HARQ-ACK bits corresponding to one DAI value may be calculated based on max_XY or min(max_HPN, max_XY) values.
- the max_HPN value may mean the maximum value among the numbers of enabled HPNs set in each of a plurality of cells in which multi-PDSCH DCI is set in the same PUCCH cell group. For example, when cell#1 and cell#2 belong to the same PUCCH cell group and multi-PDSCH scheduling DCI is configured for both cells, the number of HPNs for which HARQ operation is enabled for cell#1 is 3, If the number of HPNs for which HARQ operation is enabled for cell#2 is 4, the max_HPN may be 4. As another example, when 2 TB is configured for cell#1, spatial bundling is not configured, and 2 TB is not configured for cell#2, max_HPN may be 6.
- max_HPN is 6 means that 6, the maximum value of 6 bits for cell#1 and 4 bits for cell#2, is set as max_HPN, considering 2 bits for each PDSCH for cell#1.
- the max_XY value may be defined as the maximum X*Y value of any cell (in one cell group) when M-DCI is set for a plurality of cells.
- Y is the maximum number of PDSCHs that can be scheduled by M-DCI
- X can be calculated as 1 for a cell in which 2 TB is configured but spatial bundling is configured or 1 TB is configured.
- Z min (max_HPN, max_XY) is determined for each cell, and based on the maximum value of the Z values of each cell, corresponding to one DAI value
- the number of HARQ-ACK bits may be calculated.
- the HPN enabled in the HARQ-ACK payload corresponding to one DAI value A method of mapping the HARQ-ACK bit(s) corresponding to the lowest (or highest) bit index(s) may be applied.
- a bit with a lower HARQ ID is mapped to a lower (or higher) bit index, or a bit with an earlier corresponding PDSCH reception time is mapped to a lower (or higher) bit index.
- a method of mapping to a high) bit index may be applied.
- one HPN value is indicated through M-DCI, and the indicated HPN value may be increased by 1 from the first PDSCH and mapped to each PDSCH.
- a modulo operation may be applied in relation to PDSCH mapping, if necessary.
- the corresponding PDSCH may be limited to a valid PDSCH, and the valid PDSCH is a UL symbol (s) configured by higher layer signaling (eg, tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) It may mean a PDSCH that does not overlap with.
- This embodiment relates to a PUCCH power control scheme when a Type-2 HARQ-ACK codebook (HCB) is configured. Specifically, when Type-2 HCB is configured, a method of determining n HARQ-ACK values is proposed during PUCCH power control when the UCI payload size is 11 bits or less.
- HCB Type-2 HARQ-ACK codebook
- the UE may calculate n HARQ-ACK values for determining PUCCH transmit power as in the following example (eg, refer to TS 38.213 v17.1.0, section 9.1.3.1).
- the terminal in relation to receiving unicast data, the terminal If the number of DCIs is not received, the UE cannot know the actual number of TBs scheduled by the base station, and thus conservatively calculates the number of TBs equal to N TB,max DL .
- the UE for the PDSCH received through the actually received DCI, the UE based on the N m,c received parameter, n HARQ-ACK value based on the number of actually received TBs, PDSCHs, or bundling groups Can be calculated. .
- n HARQ-ACK in the case of the existing formula (e.g., refer to TS 38.213 v17.1.0, section 9.1.3.1), the counter DAI value received in the last DCI and the number of detected DCIs difference (i.e. ), by taking a modulo operation using T D , the case where the terminal does not receive more DCIs than T D is not considered.
- DAI downlink assignment indicator
- the UE performs HARQ-ACK feedback in slot N+5.
- the base station side transmits nine DCIs, but the terminal side cannot receive five DCIs and can only receive four DCIs.
- the UE Based on, the UE considers only the number of TBs for one DL data, not the number of TBs for five unreceived DL data, when calculating n HARQ-ACK , so the power applied by the UE when transmitting the corresponding PUCCH is relatively can be written as
- one DL data is according to ⁇ 1-4 ⁇ mod(4), and in the above formula, the V DAI,m_last DL value has only a value in the range of 1 to 4 when the DAI field is 2 bits, so it is 1 instead of 9 is replaced by That is, according to the current nHARQ-ACK calculation formula, since the base station can receive less power than expected PUCCH power, PUCCH reception performance may deteriorate.
- Equation 3 a method of calculating n HARQ-ACK by removing a modulo operation may be considered.
- U total means the total number of scheduled DCIs (for unicast) determined by the UE
- U total,g is the number of scheduled DCIs (for multicast) determined by the UE. It may mean the total number of DCIs.
- U total /U total,g may depend on the total number of scheduled DCIs determined based on the T-DAI value and/or the C-TAI value last received by the terminal.
- U total or U total,g may be replaced with a 4*j+V temp2 value meaning the HARQ-ACK payload (ie, O ACK ) on the pseudo code of the type-2 HCB described above.
- the HARQ-ACK payload may be a single TB, specifically, a HARQ-ACK payload when 2 TB is not configured or spatial bundling (ie, bundling in the spatial domain) is configured.
- the value j may mean the number of groups when DAI values are grouped by four, as in the pseudo code for deriving the HARQ-ACK payload of type-2 HCB
- the value of V temp2 is the number of remaining DAIs less than 4.
- the UE can consider all the number of TBs corresponding to the 5 DL data not received when calculating n HARQ-ACK . In this case, from the point of view of reception of the base station, there is an advantage in that it can be received with power equal to or higher than expected PUCCH power.
- n HARQ-ACK, CBG values when CBG (Code Block Group) is set to configure two sub-CBs. That is, in relation to the CBG-based HARQ-ACK codebook, n HARQ-ACK,CBG values may be calculated based on Equation 4.
- n HARQ-ACK,TBG values when multi-PDSCH scheduling DCI and/or time domain bundling are configured to configure two sub-CBs. That is, in relation to a transport block group (TBG)-based HARQ-ACK codebook, n HARQ-ACK,TBG values may be calculated based on Equation 5.
- TBG transport block group
- FIG. 14 is a diagram illustrating a signaling procedure between a base station and a terminal for a method for transmitting and receiving control information according to an embodiment of the present disclosure.
- a user equipment (UE) and a base station (BS) based on the previously proposed method eg, any one of embodiments 1 to 10 and detailed embodiments thereof or a combination of one or more (specific) embodiments
- UE user equipment
- BS base station
- FIG. 14 exemplifies signaling procedures between base stations.
- the example of FIG. 14 is for convenience of description and does not limit the scope of the present disclosure. Some step(s) illustrated in FIG. 14 may be omitted depending on circumstances and/or settings.
- the base station and the terminal in FIG. 14 are only examples, and may be implemented as the device illustrated in FIG. 17 below.
- the processor 102/202 of FIG. 17 may control transmission and reception of channels/signals/data/information using the transceiver 106/206, and may transmit or receive channels/signals/information. It can also be controlled to store data/information or the like in the memory 104/204.
- a base station may mean a generic term for an object that transmits/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.
- TRP refers to a panel, an antenna array, a cell (eg, macro cell / small cell / pico cell, etc.), It may be replaced with expressions such as TP (transmission point), base station (base station, gNB, etc.) and applied.
- TRPs may be classified according to information (eg, index, ID) on the CORESET group (or CORESET pool). For example, when one UE is configured to transmit/receive with multiple TRPs (or cells), this may mean that multiple CORESET groups (or CORESET pools) are configured for one UE. Configuration of such a CORESET group (or CORESET pool) may be performed through higher layer signaling (eg, RRC signaling, etc.).
- a base station may be interpreted as one TRP.
- the base station may include a plurality of TRPs, or may be one cell including a plurality of TRPs.
- the terminal may receive configuration information for a semi-persistent scheduling (SPS) PDSCH from the base station.
- the configuration information may include scheduling configuration information related to SPS PDSCH (eg, SPS PDSCH configuration) and may include one or more SPS PDCSH configurations.
- Corresponding configuration information may be delivered through higher layer signaling (eg, RRC signaling, etc.).
- the terminal may receive DCI for activation of the SPS PDSCH from the base station.
- the corresponding SPS PDSCH may mean one or more SPS PDSCH configurations based on the aforementioned configuration information.
- the corresponding SPS PDSCH may be set/prescribed to be activated immediately or after a certain period of time.
- the corresponding DCI may be a single DCI (eg, the above-described M-DCI) for scheduling multiple PDSCHs.
- the corresponding DCI may include a TDRA field for resource allocation in the time domain, and a row index indicated by the corresponding TDRA field may be associated with a single SLIV. That is, as in the above-described embodiments (particularly, embodiment 3), when M-DCI-based SPS PDSCH activation is performed, the TDRA row index associated with only a single SLIV may be set/defined so as to be indicated.
- row index candidates related to the TDRA field may be preset/prescribed as a first row index candidate group and a second row index candidate group.
- the first row index candidate group may include at least one row index candidate associated with a single SLIV
- the second row index candidate group may include at least one row index candidate associated with multiple SLIVs. .
- the UE can always receive at least one PDSCH based on DCI from the base station.
- at least one PDSCH may be an SPS PDSCH based on the aforementioned SPS PDSCH configuration information.
- a resource location in a slot of at least one PDSCH may be determined based on a single SLVI associated with a row index indicated by the DCI there is.
- the UE may receive another DCI for deactivation of the SPS PDSCH from the base station. may be
- the terminal may transmit HARQ-ACK information for the received at least one PDSCH (eg, at least one PDSCH in step S1430) to the base station.
- the row index indicated by the TDRA field of the other DCI may be associated with a single SLIV.
- the HARQ-ACK information includes a HARQ-ACK codebook for at least one PDSCH received by the UE, and a bit position corresponding to at least one PDSCH in the corresponding HARQ-ACK codebook is in the TDRA field of the other DCI.
- a bit position corresponding to at least one PDSCH in the corresponding HARQ-ACK codebook is in the TDRA field of the other DCI.
- transmission timing of corresponding HARQ-ACK information may be determined based on a single SLIV associated with a row index indicated by a TDRA field of the other DCI.
- 15 is a diagram illustrating an operation of a terminal for a method for transmitting and receiving control information according to an embodiment of the present disclosure.
- FIG. 15 illustrates an operation of a terminal based on the previously proposed method (eg, any one of embodiments 1 to 10 and detailed embodiments thereof or a combination of one or more (specific) embodiments).
- the example of FIG. 15 is for convenience of description and does not limit the scope of the present disclosure. Some step(s) illustrated in FIG. 15 may be omitted depending on circumstances and/or settings.
- the terminal in FIG. 15 is only one example, and may be implemented as a device illustrated in FIG. 17 below.
- the processor 102/202 of FIG. 17 uses the transceiver 106/206 to perform channel/signal/data/information, etc. (eg, RRC signaling, MAC CE, UL/DL scheduling).
- DCI, SRS, PDCCH, PDSCH, PUSCH, PUCCH, PHICH, etc. can be controlled to be transmitted and received, and transmitted or received channels/signals/data/information, etc. can be controlled to be stored in the memory 104/204. .
- the terminal may receive configuration information for the SPS PDSCH.
- a terminal may receive one or more SPS PDCSH configurations related to an SPS PDSCH by a base station.
- the terminal may receive configuration information including scheduling information and/or resource allocation information for the SPS PDSCH.
- step S1510 Since the content of setting information reception in step S1510 is the same as/similar to the description of step S1410 of FIG. 14 , a detailed description of the overlapping content will be omitted.
- the UE may receive DCI for activating the SPS PDSCH.
- the corresponding DCI may be an M-DCI for scheduling a plurality of PDSCHs.
- the UE may receive M-DCI for SPS PDSCH activation.
- step S1520 Since DCI reception in step S1520 is the same as/similar to the description of step S1420 of FIG. 14 , detailed descriptions of overlapping contents are omitted.
- the UE may receive at least one PDSCH.
- at least one PDSCH may be a PDSCH transmitted based on configuration information in step S1510 and DCI in step S1520 (in particular, SPS PDSCH).
- the terminal may receive one or more PDSCHs transmitted based on SPS PDSCH activation.
- step S1530 Since the contents of PDSCH reception in step S1530 are the same as/similar to the description of step S1530 of FIG. 14, detailed descriptions of the overlapping contents are omitted.
- the terminal may receive another DCI for deactivation of the SPS PDSCH, and HARQ-ACK information (eg, HARQ-ACK codebook, etc.) for the received PDSCH based on the corresponding DCI can be transmitted to the base station. Since the contents related to this are the same as/similar to the SPS PDSCH deactivation procedure and the HARQ-ACK information transmission procedure described in FIG. 14, a detailed description of the overlapping contents is omitted.
- HARQ-ACK information eg, HARQ-ACK codebook, etc.
- 16 is a diagram illustrating an operation of a base station for a method for transmitting and receiving control information according to an embodiment of the present disclosure.
- FIG. 16 illustrates an operation of a terminal based on the previously proposed method (eg, any one of embodiments 1 to 10 and detailed embodiments thereof or a combination of one or more (specific) embodiments).
- the example of FIG. 16 is for convenience of description and does not limit the scope of the present disclosure. Some step(s) illustrated in FIG. 16 may be omitted depending on circumstances and/or settings.
- the terminal in FIG. 16 is only one example, and may be implemented as a device illustrated in FIG. 17 below.
- the processor 102/202 of FIG. 17 uses the transceiver 106/206 to perform channel/signal/data/information, etc. (eg, RRC signaling, MAC CE, UL/DL scheduling).
- DCI, SRS, PDCCH, PDSCH, PUSCH, PUCCH, PHICH, etc. can be controlled to be transmitted and received, and transmitted or received channels/signals/data/information, etc. can be controlled to be stored in the memory 104/204. .
- the base station may transmit configuration information for the SPS PDSCH.
- the base station may configure one or more SPS PDCSH configurations related to the SPS PDSCH to the terminal.
- the base station may transmit configuration information including scheduling information and/or resource allocation information for the SPS PDSCH.
- step S1610 Since the content of setting information transmission in step S1610 is the same as/similar to the description of step S1410 of FIG. 14, a detailed description of the overlapping content will be omitted.
- the base station may transmit DCI for activating the SPS PDSCH.
- the corresponding DCI may be an M-DCI for scheduling a plurality of PDSCHs.
- the base station may transmit M-DCI for SPS PDSCH activation.
- step S1620 Since DCI transmission in step S1620 is the same as/similar to the description of step S1420 of FIG. 14 , a detailed description of the overlapping content will be omitted.
- the base station may transmit at least one PDSCH.
- at least one PDSCH may be a PDSCH (in particular, an SPS PDSCH) transmitted based on configuration information in step S1610 and DCI in step S1620.
- the base station may transmit one or more PDSCHs according to activation of the SPS PDSCH.
- step S1630 Since the contents of PDSCH transmission in step S1630 are the same as/similar to the description of step S1530 of FIG. 14, detailed descriptions of overlapping contents are omitted.
- the base station may transmit another DCI for deactivation of the SPS PDSCH, and HARQ-ACK information (eg, HARQ-ACK codebook, etc.) for the transmitted PDSCH based on the corresponding DCI is transmitted to the terminal.
- HARQ-ACK information eg, HARQ-ACK codebook, etc.
- FIG. 17 illustrates a block configuration diagram 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.
- the processor 102 controls the memory 104 and/or the transceiver 106 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or flowcharts of operations set forth 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 perform some or all of the processes controlled by processor 102, or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or flowcharts of operations disclosed in this disclosure. It may store software codes including them.
- 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.
- the processor 202 controls the memory 204 and/or the transceiver 206 and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or flowcharts of operations set forth 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 perform some or all of the processes controlled by processor 202, or instructions for performing the descriptions, functions, procedures, suggestions, methods, and/or flowcharts of operations disclosed in this disclosure. It may store software codes including them.
- 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 generate 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 disclosed herein.
- PDUs Protocol Data Units
- SDUs Service Data Units
- processors 102, 202 may generate messages, control information, data or information in accordance with the descriptions, functions, procedures, proposals, methods and/or operational flow diagrams set forth 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 (e.g., baseband signals) from one or more transceivers 106, 206, the descriptions, functions, procedures, suggestions, methods and/or described in this disclosure.
- PDUs, SDUs, messages, control information, data or information may be acquired according to the operational 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
- the descriptions, functions, procedures, proposals, methods and/or operational flow charts disclosed in this disclosure may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, and the like.
- Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed in this disclosure may be included in one or more processors (102, 202) or stored in one or more memories (104, 204). It can be driven by the above processors 102 and 202.
- the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed in this disclosure may be implemented using firmware or software in the form of codes, instructions and/or sets of instructions.
- One or more memories 104, 204 may be 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.
- the one or more transceivers 106, 206 may receive user data, control information, radio signals/channels, etc. referred to in the descriptions, functions, procedures, proposals, methods and/or operational flow charts, etc. disclosed in this disclosure from one or more other devices. there is.
- one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and 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 may be coupled with one or more antennas 108, 208, and one or more transceivers 106, 206 may be connected to one or more antennas 108, 208, as described herein. , procedures, proposals, methods and / or operation flowcharts, etc. can be set to transmit and receive user data, control information, radio signals / channels, etc.
- 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 disclosure may include Narrowband Internet of Things for low power communication as well as LTE, NR, and 6G.
- NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented in standards such as LTE Cat NB1 and / or LTE Cat NB2. no.
- the wireless communication technology implemented in the wireless device (XXX, YYY) of the present disclosure may perform communication based on LTE-M technology.
- LTE-M technology may be an example of LPWAN technology, and may be called various names such as 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 in 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 device (XXX, YYY) of the present disclosure 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 |
SCS [kHz] | 120 | 240 | 480 | 960 |
심볼 구간 | 8.33 μs | 4.17 μs | 2.08 μs | 1.04 μs |
CP 길이 | 586 ns | 293 ns | 146 ns | 73 ns |
10.2 PDCCH validation for DL SPS and UL grant Type 2 A UE validates, for scheduling activation or scheduling release, a DL SPS assignment PDCCH or a configured UL grant Type 2 PDCCH if - the CRC of a corresponding DCI format is scrambled with a CS-RNTI provided by cs-RNTI, and - the new data indicator field in the DCI format for the enabled transport block is set to '0', and - the DFI flag field, if present, in the DCI format is set to '0', and - if validation is for scheduling activation and if the PDSCH-to-HARQ_feedback timing indicator field in the DCI format is present, the PDSCH-to-HARQ_feedback timing indicator field does not provide an inapplicable value from dl-DataToUL-ACK-r16. If a UE is provided a single configuration for UL grant Type 2 PUSCH or for SPS PDSCH, validation of the DCI format is achieved if all fields for the DCI format are set according to Table 10.2-1 or Table 10.2-2. (e.g., in Table 10.2-1, "Special fields for single DL SPS or single UL grant Type 2 scheduling activation PDCCH validation when a UE is provided a single SPS PDSCH or UL grant Type 2 configuration in the active DL/UL BWP of the scheduled cell", regarding 'DCI format 1_1', for the enabled transport block, Redundancy version set to all '0's.) If a UE is provided more than one configurations for UL grant Type 2 PUSCH or for SPS PDSCH, a value of the HARQ process number field in a DCI format indicates an activation for a corresponding UL grant Type 2 PUSCH or for a SPS PDSCH configuration with a same value as provided by ConfiguredGrantConfigIndex or by sps-ConfigIndex, respectively. Validation of the DCI format is achieved if the RV field for the DCI format is set as in Table 10.2-3. If a UE is provided more than one configuration for UL grant Type 2 PUSCH or for SPS PDSCH - if the UE is provided ConfiguredGrantConfigType2DeactivationStateList or sps-ConfigDeactivationStateList, a value of the HARQ process number field in a DCI format indicates a corresponding entry for scheduling release of one or more UL grant Type 2 PUSCH or SPS PDSCH configurations - if the UE is not provided ConfiguredGrantConfigType2DeactivationStateList or sps-ConfigDeactivationStateList, a value of the HARQ process number field in a DCI format indicates a release for a corresponding UL grant Type 2 PUSCH or for a SPS PDSCH configuration with a same value as provided by ConfiguredGrantConfigIndex or by sps-ConfigIndex, respectively Validation of the DCI format is achieved if all fields for the DCI format are set according to Table 10.2-4. If validation is achieved, the UE considers the information in the DCI format as a valid activation or valid release of DL SPS or configured UL grant Type 2. If validation is not achieved, the UE discards all the information in the DCI format A UE is expected to provide HARQ-ACK information in response to a SPS PDSCH release after N symbols from the last symbol of a PDCCH providing the SPS PDSCH release. If processingType2Enabled of PDSCH-ServingCellConfig is set to enable for the serving cell with the PDCCH providing the SPS PDSCH release, N=5 for u=0, N=5.5 for u=1, and N=11 for u=2, otherwise, N=10 for u=0, N=12 for u=1, N=22 for u=2, and N=25 for u=3, wherein u corresponds to the smallest SCS configuration between the SCS configuration of the PDCCH providing the SPS PDSCH release and the SCS configuration of a PUCCH carrying the HARQ-ACK information in response to a SPS PDSCH release. |
9.1.3.1 Type-2 HARQ-ACK codebook in physical uplink control channel A UE determines monitoring occasions for PDCCH with DCI format scheduling PDSCH receptions or SPS PDSCH release or indicating SCell dormancy on an active DL BWP of a serving cell c, as described in clause 10.1, and for which the UE transmits HARQ-ACK information in a same PUCCH in slot n based on - PDSCH-to-HARQ_feedback timing indicator field values for PUCCH transmission with HARQ-ACK information in slot n in response to PDSCH receptions, SPS PDSCH release or SCell dormancy indication - slot offsets K0 [6, TS 38.214] provided by time domain resource assignment field in a DCI format scheduling PDSCH receptions and by pdsch-AggregationFactor, or pdsch-AggregationFactor-r16, or repetitionNumber, when provided. The set of PDCCH monitoring occasions for a DCI format scheduling PDSCH receptions or SPS PDSCH release or indicating SCell dormancy is defined as the union of PDCCH monitoring occasions across active DL BWPs of configured serving cells. PDCCH monitoring occasions are indexed in an ascending order of their start times. The cardinality of the set of PDCCH monitoring occasions defines a total number M of PDCCH monitoring occasions. A value of the counter downlink assignment indicator (DAI) field in DCI formats denotes the accumulative number of {serving cell, PDCCH monitoring occasion}-pair(s) in which PDSCH reception(s), SPS PDSCH release or SCell dormancy indication associated with the DCI formats is present up to the current serving cell and current PDCCH monitoring occasion, - first, if the UE indicates by type2-HARQ-ACK-Codebook support for more than one PDSCH reception on a serving cell that are scheduled from a same PDCCH monitoring occasion, in increasing order of the PDSCH reception starting time for the same {serving cell, PDCCH monitoring occasion} pair, - second in ascending order of serving cell index, and - third in ascending order of PDCCH monitoring occasion index m, where 0<= m <M. |
A value of the counter downlink assignment indicator (DAI) field in DCI formats denotes the accumulative number of {serving cell, PDCCH monitoring occasion}-pair(s) in which PDSCH reception(s), SPS PDSCH release or SCell dormancy indication associated with the DCI formats is present up to the current serving cell and current PDCCH monitoring occasion, - first, if the UE indicates by type2-HARQ-ACK-Codebook support for more than one PDSCH reception on a serving cell that are scheduled from a same PDCCH monitoring occasion, in increasing order of the first PDSCH reception starting time for the same {serving cell, PDCCH monitoring occasion} pair, - second in ascending order of serving cell index, and - third in ascending order of PDCCH monitoring occasion index m, where 0<= m <M. |
A value of the counter downlink assignment indicator (DAI) field in DCI formats denotes the accumulative number of {serving cell, PDCCH monitoring occasion}-pair(s) in which PDSCH reception(s), SPS PDSCH release or SCell dormancy indication associated with the DCI formats is present up to the current serving cell and current PDCCH monitoring occasion, - first, if the UE indicates by type2-HARQ-ACK-Codebook support for more than one PDSCH reception on a serving cell that are scheduled from a same PDCCH monitoring occasion, in increasing order of the first scheduled PDSCH reception starting time for the same {serving cell, PDCCH monitoring occasion} pair, - second in ascending order of serving cell index, and - third in ascending order of PDCCH monitoring occasion index m, where 0<= m <M. |
A value of the counter downlink assignment indicator (DAI) field in DCI formats denotes the accumulative number of {serving cell, PDCCH monitoring occasion}-pair(s) in which PDSCH reception(s), SPS PDSCH release or SCell dormancy indication associated with the DCI formats is present up to the current serving cell and current PDCCH monitoring occasion, - first, if the UE indicates by type2-HARQ-ACK-Codebook support for more than one PDSCH reception on a serving cell that are scheduled from a same PDCCH monitoring occasion, in increasing order of the first transmitted PDSCH reception starting time for the same {serving cell, PDCCH monitoring occasion} pair, - second in ascending order of serving cell index, and - third in ascending order of PDCCH monitoring occasion index m, where 0<= m <M. |
Claims (12)
- 무선 통신 시스템에서 제어 정보(control information)를 송수신하는 방법에 있어서, 단말에 의해 수행되는 상기 방법은:기지국으로부터, 반-지속적 스케줄링(semi-persistent scheduling, SPS) PDSCH(physical downlink shared channel)을 위한 설정 정보를 수신하는 단계;상기 기지국으로부터, 상기 SPS PDSCH의 활성화를 위한 하향링크 제어 정보(downlink control information, DCI)를 수신하는 단계; 및상기 기지국으로부터, 상기 DCI에 기반하여 적어도 하나의 PDSCH를 수신하는 단계를 포함하되,상기 DCI의 시간 영역 자원 할당(time domain resource assignment, TDRA) 필드에 의해 지시되는 행 인덱스(row index)는 단일 SLIV(start and length indicator value)에 연관되는, 방법.
- 제 1항에 있어서,상기 DCI는 다수의 PDSCH들을 스케줄링하기 위한 단일(single) DCI인, 방법.
- 제 1항에 있어서,상기 TDRA 필드와 관련된 제1 행 인덱스 후보 그룹 및 제2 행 인덱스 후보 그룹이 미리 설정되며,상기 제1 행 인덱스 후보 그룹은 단일 SLIV와 연관되는 적어도 하나의 행 인덱스 후보를 포함하고,상기 제2 행 인덱스 후보 그룹은 다수의 SLIV들과 연관되는 적어도 하나의 행 인덱스 후보를 포함하는, 방법.
- 제 1항에 있어서,상기 적어도 하나의 PDSCH의 슬롯 내 자원 위치는 상기 단일 SLIV에 기반하여 결정되는, 방법.
- 제 1항에 있어서,상기 기지국으로부터, 상기 SPS PDSCH의 비활성화를 위한 다른 DCI를 수신하는 단계; 및상기 기지국으로, 상기 적어도 하나의 PDSCH에 대한 HARQ-ACK 정보를 전송하는 단계를 포함하며,상기 다른 DCI의 TDRA 필드에 의해 지시되는 행 인덱스는 단일 SLIV에 연관되는, 방법.
- 제 5항에 있어서,상기 HARQ-ACK 정보는 상기 적어도 하나의 PDSCH에 대한 HARQ-ACK 코드북을 포함하며,상기 HARQ-ACK 코드북 내 상기 적어도 하나의 PDSCH에 해당하는 비트 위치는, 상기 다른 DCI의 TDRA 필드에 의해 지시되는 행 인덱스와 연관된 단일 SLIV에 기반하여 결정되는, 방법.
- 제 5항에 있어서,상기 HARQ-ACK 정보의 전송 타이밍은, 상기 다른 DCI의 TDRA 필드에 의해 지시되는 행 인덱스와 연관된 단일 SLIV에 기반하여 결정되는, 방법.
- 무선 통신 시스템에서 제어 정보(control information)를 송수신하는 단말에 있어서, 상기 단말은:하나 이상의 송수신기; 및상기 하나 이상의 송수신기와 연결된 하나 이상의 프로세서를 포함하고,상기 하나 이상의 프로세서는:기지국으로부터, 반-지속적 스케줄링(semi-persistent scheduling, SPS) PDSCH(physical downlink shared channel)을 위한 설정 정보를 수신하고;상기 기지국으로부터, 상기 SPS PDSCH의 활성화를 위한 하향링크 제어 정보(downlink control information, DCI)를 수신하고; 및상기 기지국으로부터, 상기 DCI에 기반하여 적어도 하나의 PDSCH를 수신하도록 설정하되,상기 DCI의 시간 영역 자원 할당(time domain resource assignment, TDRA) 필드에 의해 지시되는 행 인덱스(row index)는 단일 SLIV(start and length indicator value)에 연관되는, 단말.
- 무선 통신 시스템에서 제어 정보(control information)를 송수신하는 방법에 있어서, 기지국에 의해 수행되는 상기 방법은:단말로, 반-지속적 스케줄링(semi-persistent scheduling, SPS) PDSCH(physical downlink shared channel)을 위한 설정 정보를 전송하는 단계;상기 단말로, 상기 SPS PDSCH의 활성화를 위한 하향링크 제어 정보(downlink control information, DCI)를 전송하는 단계; 및상기 단말로, 상기 DCI에 기반하여 적어도 하나의 PDSCH를 전송하는 단계를 포함하되,상기 DCI의 시간 영역 자원 할당(time domain resource assignment, TDRA) 필드에 의해 지시되는 행 인덱스(row index)는 단일 SLIV(start and length indicator value)에 연관되는, 방법.
- 무선 통신 시스템에서 제어 정보(control information)를 송수신하는 기지국에 있어서, 상기 기지국은:하나 이상의 송수신기; 및상기 하나 이상의 송수신기와 연결된 하나 이상의 프로세서를 포함하고,상기 하나 이상의 프로세서는:단말로, 반-지속적 스케줄링(semi-persistent scheduling, SPS) PDSCH(physical downlink shared channel)을 위한 설정 정보를 전송하고;상기 단말로, 상기 SPS PDSCH의 활성화를 위한 하향링크 제어 정보(downlink control information, DCI)를 전송하고; 및상기 단말로, 상기 DCI에 기반하여 적어도 하나의 PDSCH를 전송하도록 설정하되,상기 DCI의 시간 영역 자원 할당(time domain resource assignment, TDRA) 필드에 의해 지시되는 행 인덱스(row index)는 단일 SLIV(start and length indicator value)에 연관되는, 기지국.
- 무선 통신 시스템에서 제어 정보(control information)를 송수신하기 위해 단말을 제어하도록 설정되는 프로세싱 장치에 있어서, 상기 프로세싱 장치는:하나 이상의 프로세서; 및상기 하나 이상의 프로세서에 동작 가능하게 연결되고, 상기 하나 이상의 프로세서에 의해 실행됨에 기반하여, 동작들을 수행하는 명령들을 저장하는 하나 이상의 컴퓨터 메모리를 포함하며,상기 동작들은:기지국으로부터, 반-지속적 스케줄링(semi-persistent scheduling, SPS) PDSCH(physical downlink shared channel)을 위한 설정 정보를 수신하는 동작;상기 기지국으로부터, 상기 SPS PDSCH의 활성화를 위한 하향링크 제어 정보(downlink control information, DCI)를 수신하는 동작; 및상기 기지국으로부터, 상기 DCI에 기반하여 적어도 하나의 PDSCH를 수신하는 동작을 포함하되,상기 DCI의 시간 영역 자원 할당(time domain resource assignment, TDRA) 필드에 의해 지시되는 행 인덱스(row index)는 단일 SLIV(start and length indicator value)에 연관되는, 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 제어 정보(control information)를 송수신하는 장치가:기지국으로부터, 반-지속적 스케줄링(semi-persistent scheduling, SPS) PDSCH(physical downlink shared channel)을 위한 설정 정보를 수신하고;상기 기지국으로부터, 상기 SPS PDSCH의 활성화를 위한 하향링크 제어 정보(downlink control information, DCI)를 수신하고; 및상기 기지국으로부터, 상기 DCI에 기반하여 적어도 하나의 PDSCH를 수신하도록 제어하되,상기 DCI의 시간 영역 자원 할당(time domain resource assignment, TDRA) 필드에 의해 지시되는 행 인덱스(row index)는 단일 SLIV(start and length indicator value)에 연관되는, 컴퓨터 판독가능 매체.
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