Method of operating a device in a wireless communication system and a device using the said method
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LG ELECTRONICS INC
- Filing Date
- 2024-04-04
- Publication Date
- 2026-05-22
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Figure 00000000_0000_ABST
Abstract
Description
[Technical Field]
[0001] This disclosure relates to a method for operating a device in a wireless communication system and a device using the said method. [Background technology]
[0002] As more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Furthermore, massive machine type communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, are also major issues to consider in next-generation communications. In addition, communication system designs that take into account reliability and latency-sensitive services / terminals are being discussed. Thus, the introduction of next-generation wireless connectivity technologies that consider enhanced mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed, and for convenience, this disclosure refers to these technologies as new RAT or NR.
[0003] NR and later wireless communication systems can perform full duplex (FD) operation. When FD operation is performed, downlink reception and uplink transmission can be performed simultaneously with a given time resource. Half duplex (HD) operation differs from FD operation in that only one of downlink reception or uplink transmission can be performed with a given time resource. For FD operation, i) within the same time resource, some frequency resources can be allocated to the downlink subband and other frequency resources to the uplink subband (this is called subband FD, or SBFD (subband-wise full duplex)), or ii) within the same time resource, frequency resources can be allocated that can be used for both downlink reception and uplink transmission (this is called spectrum-shared FD, or SSFD (spectrum-sharing full duplex)).
[0004] Within a given slot, both SBFD symbols (which operate in SBFD mode) and non-SBFD symbols (which do not operate in SBFD mode) can coexist. In this case, resources can be configured / allocated so that both SBFD and non-SBFD symbols are included as resources for uplink data channel (channel) transmission. However, because there are differences in the frequency resources, transmission power, and transmission beam available for each symbol, problems can occur when a terminal attempts to transmit uplink data channel using both SBFD and non-SBFD symbols. [Overview of the project] [Problems that the invention aims to solve]
[0005] The technical problem that this disclosure aims to solve is to provide a method for operating a device in a wireless communication system and a device using the said method. [Means for solving the problem]
[0006] The present invention provides a method for operating a device in a wireless communication system and a device using the said method. According to the said method, a terminal receives information used when setting parameters for an uplink data channel applicable to a specific frequency band, and performs repeated transmission of the uplink data channel based on the said information. In the repeated transmission, if the time resources set for the transmission of the specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission of the specific uplink data channel is skipped.
[0007] In other respects, the present invention provides a recording medium that can be read by a terminal, device, and computer performing the aforementioned method.
[0008] In other respects, the present invention provides a method for operating a base station and a base station using the method. According to the method for operating the base station, the base station transmits information used to set parameters for an uplink data channel applicable to a specific frequency band to a terminal, and repeatedly receives the uplink data channel based on the information. In the repeated reception, if the time resources for receiving the specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the reception of the specific uplink data channel is skipped. [Effects of the Invention]
[0009] According to the method disclosed herein, by transmitting each PUSCH using only symbols of the same symbol type, it is possible to prevent variations in frequency resources, transmission power, transmission beam, etc., for PUSCH transmission depending on the transmission symbol.
[0010] This can reduce the complexity of push transmissions and increase push transmission efficiency. [Brief explanation of the drawing]
[0011] [Figure 1] Examples of wireless communication systems to which this disclosure may apply are provided below. [Figure 2] This is a block diagram showing the radio protocol architecture relative to the user plane. [Figure 3] This is a block diagram showing the wireless protocol structure for the control plane. [Figure 4] This document illustrates the system structure of a next-generation radio access network (NG-RAN) to which NR (New Radio) is applied. [Figure 5] This illustrates the functional partitioning between NG-RAN and 5GC. [Figure 6] This illustrates a frame structure that can be applied in NR. [Figure 7] An example of the slot structure of an NR frame is shown. [Figure 8] The core set is shown as an example. [Figure 9] This shows an example of a frame structure for a new wireless connectivity technology. [Figure 10] This illustrates the structure of a self-contained slot. [Figure 11] Physical channels and typical signal transmission are illustrated. [Figure 12] This is an example of a PUSCH repeating type A. [Figure 13]This is an example of PUSCH repetition type B. [Figure 14] An example of a method for applying full duplex within a carrier is shown. [Figure 15] An example where both a time resource operating in HD (half duplex) and a time resource operating in FD (full duplex) such as SBFD or SSFD coexist is shown. [Figure 16] Examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource are shown. [Figure 17] Other examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource are shown. [Figure 18] The case where the symbol resources assigned for PUSCH transmission within a slot include both SBFD symbols and non - SBFD symbols is exemplified. [Figure 19] The case where the symbol resources assigned for PUSCH transmission in multiple slots include both SBFD symbols and non - SBFD symbols is exemplified. [Figure 20] An operating method of a terminal in a wireless communication system is exemplified. [Figure 21] When repetitively transmitting PUSCH with PUSCH repetition type B, if different types of symbols (SBFD symbols and non - SBFD symbols) are included in a specific slot, a PUSCH repetitive transmission method is exemplified. [Figure 22] A signaling process and an operating method between a base station and a terminal are exemplified. [Figure 23] Wireless devices applicable to this specification are exemplified. [Figure 24] An example of a signal processing module structure is shown. [Figure 25] Other examples of the signal processing module structure within a transmitting device are shown. [Figure 26] An example of a wireless communication device according to an embodiment of the present disclosure is shown. [Figure 27]An example of Processor 2000 is shown. [Figure 28] An example of processor 3000 is shown. [Figure 29] Other examples of wireless devices are illustrated. [Figure 30] Other examples of wireless equipment to which this specification applies are shown below. [Figure 31] Examples of portable devices to which this specification applies are given below. [Figure 32] An example of a communication system 1 to which this specification applies is provided. [Modes for carrying out the invention]
[0012] In this specification, "A or B" may mean "A only," "B only," or "both A and B." In other words, in this specification, "A or B" may be interpreted as "A and / or B." For example, in this specification, "A, B or C" may mean "A only," "B only," "C only," or "any combination of A, B and C."
[0013] In this specification, slashes ( / ) and commas may mean "and / or". For example, "A / B" may mean "A and / or B". Thus, "A / B" may mean "A only", "B only", or "both A and B". For example, "A, B, C" may mean "A, B or C".
[0014] In this specification, "at least one of A and B" may mean "A only," "B only," or "both A and B." Furthermore, in this specification, the expressions "at least one of A or B" and "at least one of A and / or B" may be interpreted similarly to "at least one of A and B."
[0015] Furthermore, in this specification, "at least one of A, B and C" may mean "A only," "B only," "C only," or "any combination of A, B and C." Also, "at least one of A, B or C" or "at least one of A, B and C" may mean "at least one of A, B and C."
[0016] Furthermore, parentheses used in this specification may mean "for example." Specifically, when "control information (PDCCH)" is indicated, "PDCCH" may be proposed as an example of "control information." In other words, "control information" in this specification is not limited to "PDCCH," and "PDCCH" may be proposed as an example of "control information." Also, when "control information (i.e., PDCCH)" is indicated, "PDCCH" may be proposed as an example of "control information."
[0017] Technical features described individually within a single drawing in this specification may be implemented individually or simultaneously.
[0018] Figure 1 illustrates a wireless communication system to which this disclosure may apply. This is also known as E-UTRAN (Evolved-UMTS Terrestrial Radio Access Network) or LTE (Long Term Evolution) / LTE-A system.
[0019] E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a terminal (User Equipment, UE) 10. The terminal 10 may be fixed or mobile and may be referred to by other terms such as MS (Mobile station), UT (User Terminal), SS (Subscriber Station), MT (mobile terminal), Wireless Device, or terminal. The base station 20 is a fixed station that communicates with the terminal 10 and may be referred to by other terms such as eNB (evolved-NodeB), BTS (Base Transceiver System), or Access Point.
[0020] The base stations 20 can be connected to each other via the X2 interface. The base stations 20 are connected to the EPC (Evolved Packet Core) 30 via the S1 interface, more specifically to the MME (Mobility Management Entity) via S1-MME, and to the S-GW (Serving Gateway) via S1-U.
[0021] EPC30 consists of an MME, S-GW, and P-GW (Packet Data Network-Gateway). The MME holds information about terminal connectivity and terminal capabilities, and this information is primarily used for terminal mobility management. The S-GW is a gateway with E-UTRAN as its termination point, and the P-GW is a gateway with PDN as its termination point.
[0022] The layers of the Radio Interface Protocol (RRC) between a terminal and a network can be divided into L1 (First Layer), L2 (Second Layer), and L3 (Third Layer) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Of these, the physical layer, which belongs to the first layer, provides information transfer services using physical channels, while the RRC (Radio Resource Control) layer, located in the third layer, plays the role of controlling radio resources between the terminal and the network. For this purpose, the RRC layer exchanges RRC messages between the terminal and the base station.
[0023] Figure 2 is a block diagram showing the radio protocol architecture for the user plane. Figure 3 is a block diagram showing the radio protocol architecture for the control plane. The user plane is the protocol stack for transmitting user data, and the control plane is the protocol stack for transmitting control signals.
[0024] Referring to Figures 2 and 3, the physical layer (PHY (physical) layer) provides information transfer services to higher layers using physical channels. The physical layer is connected to the higher layer, the MAC (Medium Access Control) layer, via transport channels. Data moves between the MAC layer and the physical layer via transport channels. Transport channels are classified according to how and with what characteristics data is transmitted via the wireless interface.
[0025] Data travels between different physical layers, specifically between the transmitter and receiver, via a physical channel. This physical channel can be modulated using OFDM (Orthogonal Frequency Division Multiplexing), utilizing time and frequency as wireless resources.
[0026] The MAC hierarchy's functionality includes mapping between logical channels and transport channels, and multiplexing / demultiplexing of MAC SDUs (service data units) belonging to logical channels into transport blocks provided to physical channels on the transport channels. The MAC hierarchy provides services to the RLC (Radio Link Control) hierarchy via logical channels.
[0027] The RLC hierarchy's functions include concatenation, segmentation, and reassembly of RLC SDUs. To ensure the diverse Quality of Service (QoS) requirements of radio bearers (RBs), the RLC hierarchy provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction via ARQ (automatic repeat request).
[0028] The RRC (Radio Resource Control) hierarchy is defined only in the control plane. The RRC hierarchy is responsible for controlling logical channels, transport channels, and physical channels in connection with the configuration, reconfiguration, and release of radio bearers. RB refers to the logical paths provided by the first layer (PHY layer) and the second layer (MAC layer, RLC layer, PDCP layer) for data transmission between the terminal and the network.
[0029] The functions of the PDCP (Packet Data Convergence Protocol) layer on the user plane include the transmission of user data, header compression, and encryption (ciphering). The functions of the PDCP (Packet Data Convergence Protocol) layer on the control plane include the transmission of control plane data and encryption / integrity protection.
[0030] Setting up a Radio Protocol (RB) refers to the process of defining the characteristics of the radio protocol hierarchy and channels in order to provide a specific service, and setting the specific parameters and operating methods for each. RBs are further divided into two types: SRB (Signaling RB) and DRB (Data RB). SRBs are used as channels for transmitting RRC messages in the control plane, while DRBs are used as channels for transmitting user data in the user plane.
[0031] If an RRC connection is established between the terminal's RRC hierarchy and the E-UTRAN's RRC hierarchy, the terminal enters an RRC connected state; otherwise, it enters an RRC idle state.
[0032] Downlink transport channels, which transmit data from the network to terminals, include BCH (Broadcast Channel) for transmitting system information and Downlink SCH (Shared Channel) for transmitting user traffic and control messages. Downlink multicast or broadcast service traffic or control messages can be transmitted via Downlink SCH or via a separate Downlink MCH (Multicast Channel). On the other hand, uplink transport channels, which transmit data from terminals to the network, include RACH (Random Access Channel) for transmitting initial control messages and Uplink SCH (Shared Channel) for transmitting user traffic and control messages.
[0033] Above the transport channel, logical channels mapped to the transport channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic Channel).
[0034] A physical channel consists of multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A subframe consists of multiple OFDM symbols in the time domain. A resource block is a resource allocation unit and consists of multiple OFDM symbols and multiple subcarriers. Each subframe can also use a specific subcarrier of a specific OFDM symbol (e.g., the first OFDM symbol) for the PDCCH (Physical Downlink Control Channel), i.e., the L1 / L2 control channel. The Transmission Time Interval (TTI) is the unit time for subframe transmission.
[0035] The following explains new radio access technology (new RAT, NR).
[0036] As more and more communication devices demand even larger communication capacities, the need for improved mobile broadband communication compared to conventional radio access technology (RAT) is emerging. Massive Machine Type Communications (MTC), which connects numerous devices and things to provide diverse services anytime, anywhere, is also one of the key issues being considered in next-generation communications. Furthermore, communication system designs that take into account reliability and latency-sensitive services / terminals are being discussed. Thus, the introduction of next-generation radio connectivity technologies that consider enhanced mobile broadband communication, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) is being discussed, and for convenience, this disclosure refers to these technologies as new RAT or NR.
[0037] Figure 4 illustrates the system structure of a next-generation radio access network (NG-RAN) to which NR is applied.
[0038] Referring to Figure 4, the NG-RAN can include gNBs and / or eNBs that provide user plane and control plane protocol termination to terminals. Figure 4 illustrates the case where only gNBs are included. The gNBs (eNBs) are connected to each other via Xn interfaces. The gNBs and eNBs are connected to the 5th generation core network (5G Core Network: 5GC) via NG interfaces. More specifically, they are connected to the AMF (access and mobility management function) via the NG-C interface and to the UPF (user plane function) via the NG-U interface.
[0039] Figure 5 illustrates the functional division between NG-RAN and 5GC.
[0040] Referring to Figure 5, gNB provides functions such as inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control, radio admission control, measurement configuration and provision, and dynamic resource allocation. AMF provides functions such as NAS security and idle state mobility processing. UPF provides functions such as mobility anchoring and PDU processing. SMF (Session Management Function) provides functions such as terminal IP address assignment and PDU session control.
[0041] Figure 6 illustrates a frame structure that can be applied in NR.
[0042] Referring to Figure 6, in NR, radio frames (hereinafter abbreviated as frames) can be used for uplink and downlink transmission. A frame has a length of 10 ms and can be defined as two 5 ms half-frames (HF). A half-frame can be defined as five 1 ms subframes (SF). A subframe can be divided into one or more slots, and the number of slots within a subframe depends on SCS (Subcarrier Spacing). Each slot contains 12 or 14 OFDM(A) symbols by a cyclic prefix (CP). When a normal CP is used, each slot contains 14 symbols. When an extended CP is used, each slot contains 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols) and SC-FDMA symbols (or DFT-s-OFDM symbols).
[0043] Table 1 below shows examples of subcarrier spacing configurations (also called subcarrier spacing settings) μ.
[0044] [Table 1]
[0045] Table 2 below shows the number of slots (N) in a frame, depending on the subcarrier spacing configuration μ. frame,μ slot ), number of slots in the subframe (N subframe,μ slot ), number of symbols in the slot (N slot symb Examples include:
[0046] [Table 2]
[0047] Figure 6 shows examples for μ = 0, 1, 2, and 3.
[0048] Table 2-1 below illustrates how the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS when an extended CP is used.
[0049] [Table 2-1]
[0050] In an NR system, OFDM(A) numerology (e.g., SCS, CP length, etc.) can be configured to differ between multiple cells merged into a single terminal. This allows the (absolute time) intervals of time resources (e.g., SF, slots, or TTI) (commonly referred to as TU (Time Unit) for convenience), which consist of the same number of symbols, to be configured differently between the merged cells.
[0051] Figure 7 illustrates a slot structure.
[0052] A slot can contain multiple symbols in the time domain. For example, in the case of a normal CP, one slot can contain 14 symbols (or 7 symbols), and in the case of an extended CP, one slot can contain 12 symbols (or 6 symbols). A carrier wave can contain multiple subcarriers in the frequency domain. An RB (Resource Block) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) can be defined as multiple consecutive (P)RBs in the frequency domain and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier wave can contain up to N (e.g., 5) BWPs. Data communication is performed via activated BWPs, and only one BWP can be activated per terminal. In a resource grid, each element is called a Resource Element (RE) and can be mapped to a single complex symbol.
[0053] A PDCCH (physical downlink control channel) can be composed of one or more CCEs (control channel elements) as shown in Table 3 below.
[0054] [Table 3]
[0055] In other words, PDCCH is transmitted via a resource consisting of 1, 2, 4, 8, or 16 CCEs. Here, a CCE consists of 6 REGs (resource element groups), and each REG consists of one resource block in the frequency domain and one OFDM (orthogonal frequency division multiplexing) symbol in the time domain.
[0056] Monitoring means decoding each PDCCH candidate according to a DCI (downlink control information) format. The terminal monitors a set of PDCCH candidates in one or more core sets (CORESET, described below) on the activated DL BWP of each activated serving cell for which PDCCH monitoring is configured, according to the corresponding search space set.
[0057] In NR, a new unit called a control resource set (CORESET) can be introduced. The terminal can receive PDCCH in a core set.
[0058] Figure 8 illustrates a core set.
[0059] Referring to Figure 8, a core set is composed of N resource blocks in the frequency domain and can be composed of N ∈ {1, 2, 3} symbols in the time domain. N, N can be provided by the base station via a higher layer signal. As shown in Figure 7, a plurality of CCEs (or REGs) can be included in the core set. CORESET RB 個のリソースブロックで構成され、時間領域でN CORESET symb ∈{1, 2, 3} symbols in the time domain. N, N can be provided by the base station via a higher layer signal. As shown in Figure 7, a plurality of CCEs (or REGs) can be included in the core set. CORESET RB 、N CORESET symb are provided by the base station via a higher layer signal. As shown in Figure 7, a plurality of CCEs (or REGs) can be included in the core set.
[0060] The terminal can attempt to detect PDCCH in units of 1, 2, 4, 8, or 16 CCEs within a core set. One or more CCEs for which PDCCH detection can be attempted can be called a PDCCH candidate.
[0061] The terminal can receive settings of a plurality of core sets.
[0062] In conventional wireless communication systems (e.g., LTE / LTE-A), the control domain was configured across the entire system bandwidth used by the base station. All terminals, with the exception of some terminals supporting only narrow bandwidths (e.g., eMTC / NB-IoT terminals), needed to be able to receive radio signals across the entire system bandwidth of the base station in order to accurately receive / decode the control information transmitted by the base station.
[0063] In contrast, NR introduced the aforementioned core set. A core set can be described as a radio resource for control information that a terminal should receive, and in the frequency domain, it can use only a portion of the system bandwidth instead of the entire system bandwidth. Also, in the time domain, it can use only a portion of the symbols within a slot. A base station can assign a core set to each terminal and transmit control information through the assigned core set. In NR, a terminal can receive base station control information without necessarily receiving the entire system bandwidth.
[0064] The core set includes a terminal-specific core set for transmitting terminal-specific control information and a common core set for transmitting control information common to all terminals.
[0065] On the other hand, in NR, high reliability may be required depending on the application field, and in such situations, the target block error rate (BLER) for DCI (downlink control information) transmitted via a downlink control channel (e.g., physical downlink control channel: PDCCH) can be significantly lower than in conventional technologies. One way to meet this requirement for high reliability is to reduce the amount of content included in the DCI and / or increase the amount of resources used when transmitting the DCI. In this case, the resources may include at least one of the following: resources in the time domain, resources in the frequency domain, resources in the code domain, and resources in the spatial domain.
[0066] The following technologies / features can be applied to NR.
[0067] <Self-contained subframe structure>
[0068] Figure 9 shows an example of a frame structure for a new wireless connectivity technology.
[0069] In NR, to minimize latency, one frame structure is considered in which the control channel and data channel are time-division multiplexed (TDM) within a single TTI, as shown in Figure 8.
[0070] In Figure 9, the shaded area represents the downlink control area, and the black area represents the uplink control area. Areas without a label may be used for downlink data (DL data) transmission or for uplink data (UL data) transmission. A key feature of this structure is that downlink (DL) transmission and uplink (UL) transmission proceed sequentially within a single subframe, allowing DL data to be sent and UL ACK / NACK (Acknowledgement / Not-acknowledgement) to be received within the subframe. As a result, the time required for data retransmission in the event of a data transmission error is reduced, thus minimizing the latency of the final data transmission.
[0071] In such a data and control TDM-enabled subframe structure, a time gap is required for the transition between the base station and the terminal from transmit mode to receive mode, or from receive mode to transmit mode. For this reason, in a self-contained subframe structure, some OFDM symbols at the time of conversion from DL to UL are set in a guard period (GP).
[0072] Figure 10 illustrates the structure of a self-contained slot.
[0073] In an NR system, a single slot can contain a DL control channel, DL or UL data, and a UL control channel. For example, the first N symbols in a slot can be used when transmitting a DL control channel (hereinafter referred to as the DL control area), and the last M symbols in the slot can be used when transmitting a UL control channel (hereinafter referred to as the UL control area). N and M are integers greater than or equal to 0. The resource area (hereinafter referred to as the data area) between the DL control area and the UL control area can be used for transmitting DL data or UL data. As an example, the following configuration can be considered. Each section is listed in chronological order.
[0074] 1.DL only configuration
[0075] 2.UL only configuration
[0076] 3.Mixed UL-DL configuration
[0077] -DL area + GP (Guard Period) + UL control area
[0078] -DL control area + GP + UL area
[0079] DL area: (i) DL data area, (ii) DL control area + DL data area
[0080] UL area: (i) UL data area, (ii) UL data area + UL control area
[0081] In the DL control domain, PDCCH can be transmitted, and in the DL data domain, PDSCH (physical downlink shared channel) can be transmitted. In the UL control domain, PUCCH (physical uplink control channel) can be transmitted, and in the UL data domain, PUSCH (physical uplink shared channel) can be transmitted. PDCCH can transmit DCI (Downlink Control Information), such as DL data scheduling information and UL data scheduling information. PUCCH can transmit UCI (Uplink Control Information), such as ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL data, CSI (Channel State Information) information, and SR (Scheduling Request). GP provides a time gap during the transition between the base station and the terminal from transmit mode to receive mode, or from receive mode to transmit mode. Some symbols at the point of transition from DL to UL within a subframe can be set in GP.
[0082] <Analog beamforming #1>
[0083] In millimeter waves (mmW), the wavelength is shorter, allowing for the placement of multiple antenna elements in the same area. Specifically, in the 30 GHz band, with a wavelength of 1 cm, a total of 100 antenna elements can be installed in a 5x5 cm panel at 0.5 wavelength (lambda) intervals in a two-dimensional array. Therefore, in mmW, the aim is to increase beamforming gain and thus coverage, or to increase throughput, by using a large number of antenna elements.
[0084] In this case, if each antenna element has its own transceiver unit (TXRU) that allows for independent beamforming based on frequency resources, then independent beamforming is possible for each frequency resource. However, installing a TXRU for all 100+ antenna elements presents a cost-ineffective problem. Therefore, a method is being considered in which multiple antenna elements are mapped to a single TXRU and the beam direction is adjusted using an analog phase shifter. Such an analog beamforming method has the disadvantage that it can only form one beam direction across the entire bandwidth and cannot perform frequency-selective beamforming.
[0085] As an intermediate form between digital beamforming (Digital BF) and analog beamforming (analog BF), hybrid beamforming (hybrid BF) can be considered, which has B TXRUs, fewer than Q antenna elements. In this case, although there will be differences depending on the coupling method of the B TXRUs and Q antenna elements, the number of beam directions that can be transmitted simultaneously will be limited to B or less.
[0086] <Analog beamforming #2>
[0087] In NR systems where numerous antennas are used, hybrid beamforming techniques combining digital and analog beamforming are gaining prominence. In this case, analog beamforming (or RF beamforming) has the advantage of performing precoding (or combining) at the RF end, thereby reducing the number of RF chains and D / A (or A / D) converters, while achieving performance close to that of digital beamforming. For convenience, the aforementioned hybrid beamforming structure can be represented by N TXRUs and M physical antennas. In this case, digital beamforming for L data layers transmitted at the transmitting end can be represented by an NbyL matrix, and thereafter, the N digital signals are converted to analog signals via the TXRUs, after which analog beamforming represented by an MbyN matrix is applied.
[0088] NR system information can be transmitted via broadcasting. In this case, analog beams belonging to different antenna panels within a single symbol can be transmitted simultaneously, and a beam reference signal (BRS) is being discussed, which is a reference signal (RS) to which a single analog beam (corresponding to a specific antenna panel) is applied and transmitted to measure different analog beam channels. The BRS can be defined for multiple antenna ports, and each antenna port of the BRS can correspond to a single analog beam. In this case, unlike the BRS, the synchronization signal (xPBCH) can be transmitted using all analog beams within an analog beam group so that any terminal can easily receive it.
[0089] In NR, a synchronization signal block (SSB, or synchronization signal and physical broadcast channel: SS / PBCH) in the time domain can consist of four OFDM symbols numbered in ascending order from 0 to 3 within the synchronization signal block, and the primary synchronization signal (PSS), secondary synchronization signal (SSS), demodulation reference signal (DMRS), and associated PBCH can be mapped to these symbols. As mentioned above, a synchronization signal block can also be represented as an SS / PBCH block.
[0090] In NR, multiple synchronization signal blocks can be transmitted at different times, and SSB can be used to perform initial access (IA), serving cell measurement, etc. Therefore, if transmission times and resources overlap with other signals, it is preferable to transmit SSB preferentially. For this purpose, the network can broadcast or instruct SSB transmission time and resource information via UE-specific RRC signaling.
[0091] NR allows for beam-based transmit and receive operations. If the receiving performance of the current serving beam deteriorates, a process called beam failure recovery (BFR) can be initiated to search for a new beam.
[0092] Since BFR is not a process that declares an error / failure on the link between the network and the terminal, it can be assumed that the connection with the serving cell is currently maintained even when the BFR process is performed. During the BFR process, measurements are performed on different beams configured by the network (beams can be represented by CSI-RS ports or SSB (synchronization signal block) indices, etc.), and the terminal can select the best beam. The terminal can then proceed with the BFR process in a way that performs the RACH process associated with the beam that yielded the best measurement results.
[0093] The following describes the Transmission Configuration Indicator (TCI) state. The TCI state can be set for each core set of the control channel, and the parameters for determining the terminal's receive (Rx) beam can be determined based on the TCI state.
[0094] For each downlink bandwidth portion (DL BWP) of a serving cell, a terminal can be configured with up to three core sets. Furthermore, for each core set, the terminal can receive the following information:
[0095] 1) Core set index p (for example, one of 0 to 11, the BWP of a single serving cell can uniquely determine the index of each core set),
[0096] 2) PDCCH DM-RS scrambling sequence initialization value,
[0097] 3) Intervals in the time domain of the core set (which can be given in units of symbols),
[0098] 4) Resource block set,
[0099] 5) CCE-to-REG mapping parameters,
[0100] 6) Antenna port quasi co-location (QCL) information for DM-RS antenna ports for PDCCH reception, represented by the set of antenna port quasi co-locations (QCL) provided by the higher-level parameter "TCI-State" in each core set,
[0101] 7) Indications such as whether or not there is a transmission configuration indication (TCI) field for a specific DCI format transmitted by PDCCH in the core set.
[0102] Let's explain QCL. If the characteristics of the channel on which a symbol is transmitted on one antenna port can be inferred from the characteristics of the channel on which a symbol is transmitted on another antenna port, then the two antenna ports can be said to be in a quasi-common location (QCL). For example, if two signals (A and B) are transmitted from the same transmitting antenna array to which the same / similar spatial filters are applied, the two signals can go through the same / similar channel states. From the receiver's perspective, upon receiving one of the two signals, the other signal can be detected using the channel characteristics of the received signal.
[0103] In this sense, A and B being QCLed means that A and B undergo similar channel conditions, and therefore the channel information estimated to detect A is also useful when detecting B. Here, channel conditions can be defined by, for example, Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters, etc.
[0104] The "TCI-State" parameter associates one or two downlink reference signals with the corresponding QCL type (there are QCL types A, B, C, and D; see Table 4).
[0105] [Table 4]
[0106] Each "TCI-State" may include parameters for establishing a quasi-co-location (QCL) relationship between one or two downlink reference signals and the DM-RS ports of a PDSCH (or PDCCH), or the CSI-RS ports of a CSI-RS resource.
[0107] On the other hand, in each DL BWP configured on a terminal within a single serving cell, the terminal can receive up to 10 search space sets. For each search space set, the terminal can receive at least one of the following pieces of information:
[0108] 1) Search space set index s (0 ≤ s < 40), 2) Association between core set P and search space set s, 3) PDCCH monitoring period and PDCCH monitoring offset (per slot), 4) PDCCH monitoring pattern within a slot (e.g., indicating the first symbol of the core set within the slot for PDCCH monitoring), 5) Number of slots in which search space set s exists, 6) Number of PDCCH candidates by CCE aggregation level, 7) Information indicating whether search space set s is CSS or USS, etc.
[0109] In NR, core set #0 can be configured by PBCH (or terminal-specific signaling or PSCell configuration or BWP configuration for handover). The search space (SS) set #0 configured by PBCH can have different monitoring offsets (e.g., slot offset, symbol offset) for each associated SSB. This is necessary to minimize the search space occasions that the terminal needs to monitor. Alternatively, it is necessary to provide a beam sweeping control / data area that allows control / data transmission by each beam, enabling continuous communication with the terminal in situations where the terminal's best beam changes dynamically.
[0110] Figure 11 illustrates a physical channel and typical signal transmission.
[0111] Referring to Figure 11, in a wireless communication system, a terminal receives information from a base station via the downlink (DL) and transmits information to the base station via the uplink (UL). The information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information being transmitted and received.
[0112] When a terminal is turned on again after being turned off, or when a terminal newly enters a cell, it performs initial cell search operations, such as synchronizing with the base station (S11). For this purpose, the terminal receives PSCH (Primary Synchronization Channel) and SSCH (Secondary Synchronization Channel) from the base station to synchronize with the base station and obtain information such as the cell ID (cell identity). The terminal can also receive PBCH (Physical Broadcast Channel) from the base station to obtain broadcast information within the cell. Furthermore, the terminal can receive DL RS (Downlink Reference Signal) during the initial cell search step to check the downlink channel status.
[0113] (Initial) cell discovery can mean the procedure by which a terminal obtains time and frequency synchronization with a cell and detects the cell ID of said cell. Cell discovery can be performed based on the primary and secondary synchronization signals of said cell and the PBCH DMRS.
[0114] Once the terminal has completed the initial cell search, it can receive the PDCCH (Physical Downlink Control Channel) and its corresponding PDSCH (Physical Downlink Control Channel) to obtain more specific system information (S12).
[0115] Thereafter, the terminal can perform a random access procedure to complete the connection to the base station (S13-S16). Specifically, the terminal can transmit a preamble via PRACH (Physical Random Access Channel) (S13) and receive a Random Access Response (RAR) for the preamble via PDCCH and its corresponding PDSCH (S14). Thereafter, the terminal can transmit a PUSCH (Physical Uplink Shared Channel) using scheduling information in the RAR (S15) and perform a contention resolution procedure such as PDCCH and its corresponding PDSCH (this can be described as the process of receiving a contention resolution message) (S16).
[0116] A terminal that has performed the procedures described above can subsequently perform PDCCH / PDSCH reception (S17) and PUSCH / PUCCH (Physical Uplink Control Channel) transmission (S18) as general uplink / downlink signal transmission procedures. The control information that the terminal transmits to the base station is called UCI (Uplink Control Information). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted via PUCCH, but if control information and data should be transmitted simultaneously, it can be transmitted via PUSCH. In addition, at the request / instruction of the network, the terminal can transmit UCI aperiodically via PUSCH.
[0117] When bandwidth adaptation (BA) is configured, to enable reasonable battery consumption, only one uplink bandwidth part (BWP) and one downlink BWP, or one downlink / uplink BWP pair, for each uplink carrier can be activated at one time within the active serving cell, while all other BWPs configured on the terminal are deactivated. With deactivated BWPs, the terminal does not monitor PDCCH and does not transmit over PUCCH, PRACCH, and UL-SCH.
[0118] For the BA, the terminal's receive and transmit bandwidth does not need to be as wide as the cell bandwidth and can be adjusted: the width can be commanded to change (e.g., contract during periods of low activity to save power), the position in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be commanded to change (e.g., to accommodate different services). A subset of the cell's overall bandwidth is called a bandwidth part (BWP), which the BA obtains by setting a BWP(s) for the terminal and informing the terminal which of the set BWPs is currently active. Once the BA is set, it is sufficient for the terminal to monitor the PDCCH on one active BWP; that is, it is not necessary to monitor the PDCCH on the cell's overall downlink frequency. A BWP deactivation timer (independent of the DRX deactivation timer mentioned above) is used when switching the active BWP to the default BWP: the timer is restarted if PDCCH decoding is successful, and switching to the default BWP occurs when the timer expires.
[0119] The following section describes the integrated access and backhaul link (IAB). For convenience of explanation, the proposed scheme is based on the new RAT (NR) system, but the scope of systems to which the proposed scheme applies can be extended to other systems outside of the NR system, such as the 3GPP (registered trademark; hereinafter the same) LTE / LTE-A system.
[0120] One potential technology that aims to enable future cellular network deployment scenarios and applications is one that allows for flexible and highly dense deployment of NR cells without the need to proportionally increase the density of the transport network as support for wireless backhaul and relay links.
[0121] With the expected availability of significantly larger bandwidths in NR compared to LTE, along with massive MIMO or native deployment of multi-beam systems (e.g., mmWave spectrum), opportunities arise for the development and deployment of integrated access and backhaul links. This allows for easier deployment of densely packed networks of self-backhauled NR cells in a more integrated manner by constructing a number of control and data channels / procedures defined to provide connectivity or access to terminals. Such systems are called integrated access and backhaul links (IABs).
[0122] This disclosure defines the following:
[0123] -AC(x): Access link between node(x) and terminal(ra).
[0124] -BH(xy): The backhaul link between node (x) and node (y).
[0125] At this time, the node can mean a donor gNB (DgNB) or a relay node (RN). Here, the DgNB or donor node is a gNB that provides a function to support the backhaul for the IAB node.
[0126] When there are relay node 1 and relay node 2, when relay node 1 is connected to relay node 2 by a backhaul link and relays the data transmitted and received to relay node 2, relay node 1 is called the parent node of relay node 2, and relay node 2 is named the child node of relay node 1.
[0127] In this specification, the technical features individually described in one drawing can be implemented individually or simultaneously.
[0128] The following drawings are created to illustrate a specific example of this specification. Since the names of the specific devices and the names of the specific signals / messages / fields described in the drawings are presented exemplarily, the technical features of this specification are not limited to the specific names used in the following drawings.
[0129] <PUSCH repetitions>
[0130] PUSCH repetition types A and B are introduced in the standard specifications (e.g., NR Rel-15 / 16). Depending on the PUSCH repetition type, transmission is performed as follows.
[0131] 1) PUSCH repetition type A
[0132] Figure 12 is an example of PUSCH repetition type A.
[0133] Referring to Figure 12, PUSCH repetition type A is a slot-based PUSCH repetition transmission, and as shown in Figure 12, the repetition is executed with the same PUSCH transmission start symbol position and PUSCH transmission symbol length for each slot. In this case, if there are invalid symbols among the symbol resources that make up a particular PUSCH repetition that cannot be used for PUSCH transmission, the corresponding PUSCH repetition transmission is dropped and not executed. For example, when a total of four PUSCH repetition transmissions, Rep0, Rep1, Rep2, and Rep3, are executed in slots N, N+1, N+2, and N+3 (one PUSCH repetition is transmitted in each slot), if the symbol resources that make up Rep1 contain invalid symbols, the transmission of Rep1 is dropped, and only the transmissions of Rep0, Rep2, and Rep3 are executed. Therefore, the actual number of repetitions executed is less than the set number of repetitions.
[0134] In the case of PUSCH repeat type A, frequency hopping can be set on the terminal using higher-level parameters. One of two frequency hopping modes can be set.
[0135] i) Frequency hopping within a slot is applicable to single-slot and multi-slot push transmissions.
[0136] ii) Frequency hopping between slots is applicable to multi-slot push transmission.
[0137] 2) PUSCH Repeat Type B
[0138] Figure 13 shows an example of the PUSCH repeating type B.
[0139] Referring to Figure 13, PUSCH repetition type B is executed in units of the symbol length in which the PUSCH is actually transmitted. For example, as shown in Figure 13(a), when a PUSCH is transmitted through 10 symbols, the PUSCH repetition is executed in units of 10 consecutive symbols. In this case, a repetition that determines the PUSCH repetition transmission time resource without considering slot boundaries, invalid symbols, etc., is called a nominal repetition. Figure 13(a) shows an example in which three nominal repetitions (shown as N0, N1, and N2) are set.
[0140] However, in the case of actual push repetitions, a single push cannot be transmitted while including a slot boundary. That is, if a nominal push transmission includes a slot boundary (for example, N0 and N2 in Figure 13(a)), two actual repetitions will be executed with the slot boundary as the boundary, as shown in Figure 13(b). For example, nominal repetition N0 will be executed as two actual repetitions, A0 and A1, with the slot boundary as the boundary.
[0141] Furthermore, a single PUSCH transmission can only be executed through a sequence of symbols. If there are invalid symbols in the time resource to which a PUSCH repetition should be transmitted, the actual repetition is constructed using a sequence of symbols with the invalid symbols as the boundary. For example, if symbols #0 to #9 constitute one nominal repetition and symbols #3 to #5 are invalid symbols, then symbols #0 to #2 and symbols #6 to #9, excluding the invalid symbols, will each constitute one actual repetition.
[0142] Invalid symbols may include the following symbols:
[0143] i) Downlink symbols set by semi-static TDD UL-DL settings,
[0144] ii) Invalid symbol patterns set by RRC (which can be set by an invalid symbol pattern indicator),
[0145] iii) SSB symbols set by SIB1, SSB symbols set by "ServngCellConfigCommon",
[0146] iv) Symbols for PDCCH for SIB1,
[0147] v) Invalid symbols for DL-UL switching configured by RRC.
[0148] If an actual repeat resource contains symbols that cannot be used for PUSCH transmissions (for example, DL symbols indicated by DCI format 2_0), that actual repeat transmission will be dropped and not executed.
[0149] The following explains full-duplex operation.
[0150] 5G is giving rise to new service types such as XR (Extended Reality), AI-based services, and self-driving cars. These services are characterized by dynamic traffic changes in both the downlink (DL) and uplink (UL) directions, and require low latency when traffic (e.g., packets) is transmitted. 5G services will see an explosive increase in traffic to support these diverse new use cases.
[0151] Conventional semi-static or dynamic TDD UL / DL configurations are limited by transmission time delay and operator interference issues. Conventional FDD methods have limitations in terms of efficient frequency resource utilization in the DL / UL direction. Therefore, the introduction of full-duplex operation within a single carrier is being discussed to achieve low delay times and efficient resource utilization in noise reduction (NR).
[0152] Figure 14 shows an example of a method that applies full duplex within the carrier wave.
[0153] Referring to Figure 14, the full-duplex scheme can consider subband-wise full duplex (hereinafter referred to as subband full duplex or SBFD) as shown in Figure 14(a) and spectrum-sharing full duplex (hereinafter referred to as SSFD) as shown in Figure 14(b).
[0154] In the case of SBFD, DL and UL transmission and reception are performed on different frequency resources within the same carrier wave (e.g., carrier wave #0). That is, DL and UL use different frequency resources for the same time resource.
[0155] In the case of SSFD, DL and UL transmission and reception are performed within the same carrier wave (e.g., carrier wave #0) via the same frequency resource or overlapping frequency resources. That is, the same or overlapping frequency resources can be used for DL and UL for the same time resource.
[0156] Such full-duplex (FD) operation can also be used in combination with conventional half-duplex (HD) operation. For example, some of the time resources used for conventional half-duplex-based TDD operation can be used for full-duplex operation. The time resources used to perform full-duplex operation can, for example, perform SBFD or SSFD operation.
[0157] Figure 15 shows an example where time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.
[0158] In Figure 15(a), some time resources operating in SBFD are displayed in SBFD, and time resources operating in half-duplex are displayed in HD. In Figure 15(b), some time resources operating in SSFD are displayed in SSFD, and time resources operating in half-duplex are displayed in HD. The unit of time resources is, for example, slots or symbols.
[0159] In time resources operating under SBFD, some frequency resources are used as DL resources, and other frequency resources are used as UL resources. Between DL and UL frequency resources, there can be a guard subband that is not used as DL or UL. The guard subband can also be referred to by other terms such as guard frequency resources or guard subcarriers.
[0160] In time resources operating with SSFD, the entire frequency resource may be used for both DL and UL. Alternatively, to reduce the effects of interference from other adjacent carriers (referred to as ACI (adjacent carrier interference)), some frequency resources on one or both edges of the carrier may not be used for DL and / or UL. That is, one or both edges of the carrier can be used as a guard band (guard subband) that is not used for both DL and UL. Alternatively, to reduce ACI affecting UL reception, one or both edges of the carrier may be used only for DL transmission.
[0161] In this disclosure, slot resources operating in half-duplex mode are referred to as HD slots, and slot resources operating in SBFD mode and SSFD mode are referred to as SBFD slots (SBFD slots) and SSFD slots (SSFD slots), respectively. Furthermore, SSFD slots and SSFD slots are collectively referred to as FD slots.
[0162] In this disclosure, within the time resources operating in FD mode, the frequency resources operating in DL mode can be conveniently referred to as the DL subband, and the frequency resources operating in UL mode can be referred to as the UL subband.
[0163] In full-duplex operation, both the base station and the terminal can perform full-duplex operation. That is, both the base station and the terminal can simultaneously transmit and receive DL and UL using the same or different frequency resources within the same time resources.
[0164] Alternatively, only the base station can perform full-duplex operation, while the terminals can perform half-duplex operation. The base station can simultaneously transmit and receive DL and UL using the same or different frequency resources within the same time resources, while the terminals can perform only DL reception or UL transmission within a given time resource. In this case, the base station performs full-duplex operation by performing DL transmission and UL reception with different terminals at the same time.
[0165] This disclosure is written assuming that the base station performs / supports full-duplex operation and the terminal performs / supports half-duplex operation. However, this disclosure may also apply when both the base station and the terminal perform / support full-duplex operation.
[0166] Based on these discussions, this disclosure proposes a terminal push transmission method for cases where a single push transmission contains both SBFD and non-SBFD symbols during intra-carrier full duplex operation within a carrier.
[0167] Hereafter, "network" can be interpreted as gNB or CU / DU. Similarly, "terminal (UE)" can be interpreted as IAB node MT (mobile terminal, mobile termination) or NCR-MT (network-controlled repeater MT).
[0168] A. Characteristics of DL / UL time / frequency resources for SBFD and SSFD operation
[0169] A cell (base station) can perform both DL transmission and UL reception using the same time resources in an FD scheme such as SBFD or SSFD. For example, a base station can perform HD operation in the first time resource and FD operation in the second time resource (which is the remaining time resource after the first time resource is deducted).
[0170] In the first time resource performing HD operations, DL operations or UL operations are performed across the entire frequency resource that constitutes the system bandwidth. Within the first time resource performing HD operations, the network performs DL operations via the 1-1 time resource and UL operations via the 1-2 time resource. In this case, the 1-1 time resource and the 1-2 time resource do not overlap with each other.
[0171] In the second time resource performing the FD operation, the network performs the DL operation through all or part of the frequency resources (first frequency resources) that make up the cell's system bandwidth, and performs the UL operation through all or part of the frequency resources (second frequency resources).
[0172] Figure 16 shows examples of the first time resource, the second time resource, the first frequency resource, and the second frequency resource.
[0173] Referring to Figure 16(a), in the first time resource (indicated as A), the device operates in half-duplex mode. In the second time resource (indicated as B), the device can operate, for example, in SBFD mode. In the first time resource, the resource indicated as DL corresponds to the 1-1 time resource described above, and the resource indicated as UL corresponds to the 1-2 time resource described above.
[0174] Referring to Figure 16(b), in the second time resource, the frequency resource operating in DL corresponds to the first frequency resource mentioned above, and the frequency resource operating in UL corresponds to the second frequency resource mentioned above.
[0175] Figure 17 shows the first time resource, the second time resource, the first frequency resource, and other examples of the second frequency resource.
[0176] Referring to Figure 17(a), in the first time resource (indicated as A), the device operates in half-duplex mode. In the second time resource (indicated as B), it can operate, for example, in SSFD mode. In the first time resource, the resource indicated as DL corresponds to the 1-1 time resource described above, and the resource indicated as UL corresponds to the 1-2 time resource described above.
[0177] Referring to Figure 17(b), in the second time resource, the frequency resources operating in DL and DL+UL correspond to the first frequency resource mentioned above, and the frequency resources operating in DL+UL correspond to the second frequency resource mentioned above.
[0178] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics:
[0179] 1) When performing SBFD operation, the first and second frequency resources do not overlap. This is to ensure that DL and UL operations are performed via different frequency resources. In this case, there may be frequency resources that do not fall under the first and second frequency resources, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources are necessary to reduce interference between DL transmission and UL reception. Guard frequency resources can be located between the first and second frequency resources.
[0180] 2) When SSFD operation is performed, the first frequency resource and the second frequency resource may overlap. In this case, there may be frequency resources that do not fall under the first or second frequency resources, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources are necessary to reduce interference between DL transmission on adjacent carriers and / or UL reception on adjacent carriers.
[0181] 3) When SBFD operation is performed, the second frequency resource can consist of continuous frequency resources, and the first frequency resource can consist of discontinuous frequency resources. In this case, the first frequency resource can consist of a discontinuous set of multiple (e.g., 2) frequencies, and each of these frequencies can consist of continuous frequency resources. This is to position the second frequency resource used for UL at the center of the frequency resources that make up the cell, thereby reducing interference from DL transmission on adjacent carriers to the UL resource. Conversely, the first frequency resource can consist of continuous frequency resources, and the second frequency resource can consist of discontinuous frequency resources. In this case, the second frequency resource can consist of a discontinuous set of multiple (e.g., 2) frequencies, and each of these frequencies can consist of continuous frequency resources. This is to position the second frequency resource used for DL at the center of the frequency resources that make up the cell, thereby reducing interference from DL transmission on adjacent carriers to the UL resource.
[0182] 4) When SSFD operation is performed, the second frequency resource can be composed of a portion of the first frequency resource. In this case, the second frequency resource can be made smaller than the first frequency resource by about X PRBs (physical resource blocks) per edge of one or both sides of the carrier wave. This is to reduce interference between DL transmission on adjacent carrier waves and UL reception.
[0183] The network can determine / judge the aforementioned "first time resource" and "second time resource," as well as the "first frequency resource" and "second frequency resource," and provide all or part of the relevant information to the terminal.
[0184] The terminal can determine information about time resources operating in SBFD (and / or SSFD) mode (hereinafter referred to as SBFD symbols) for the cell's FD (SBFD and / or SSFD) operation. For this purpose, information about SBFD symbols can be set on the terminal from the network.
[0185] When a specific time resource is set to be a time resource that operates in SBFD mode (SBFD symbol), both DL and UL resources can exist within that time resource. In this case, if there are no UL signals for the base station to receive within that time resource, the base station can perform only DL transmissions. Within an SBFD resource, DL transmissions are performed only within the DL subband. Therefore, even if there are no UL signals to be transmitted in the UL subband, DL transmissions can be performed only within the DL subband.
[0186] In this case, even if a specific time resource is determined to be an SBFD symbol, if there are no UL transmissions received by the base station, it may be considered to perform DL transmissions not only in the DL subband but also outside the DL subband in order to improve DL throughput. In other words, it may be considered to perform DL transmissions across the entire bandwidth.
[0187] In other words, for resources identified as SBFD symbols, a fallback to TDD operation, which performs DL or UL operation across the entire bandwidth instead of SBFD operation via the DL / UL subband, can be considered.
[0188] For resources that are not identified as SBFD symbols, the terminal can perform TDD operation (half-duplex operation) like a conventional terminal. That is, it can perform only DL or UL operation using the entire frequency resource of the cell.
[0189] The terminal can receive SBFD symbol information from the network. This allows it to determine whether a specific symbol is an SBFD symbol or a non-SBFD symbol.
[0190] i) If the terminal determines that a particular symbol is a non-SBFD symbol, it may perform legacy operation with that symbol (or decides to perform legacy operation).
[0191] ii) If the terminal determines that a particular symbol is an SBFD symbol, it determines that the symbol is capable of performing SBFD operations from a cell perspective.
[0192] There are cases where the terminal does not receive configuration information for SBFD symbols from the network. In this case, i) the terminal can determine that all symbols are non-SBFD symbols. Therefore, the terminal can operate like a legacy TDD with all symbols.
[0193] Alternatively, ii) if the terminal does not receive configuration information for SBFD symbols from the network, the terminal may determine that all symbols are SBFD symbols.
[0194] If a terminal determines that a particular symbol is an SBFD symbol, then i) generally, the terminal may perform DL reception in the DL subband and UL transmission in the UL subband during the time resources in which the cell determines that it is operating in SBFD mode. ii) Additionally, during the time resources in which the cell determines that it is operating in SBFD mode, the base station may choose to perform only DL transmission or UL reception, or, if necessary, perform DL transmission or UL reception across the entire band (and be subject to DL or UL scheduling).
[0195] The device can determine whether to use the UL subband or DL subband based on its network settings.
[0196] i) The terminal receives information about the UL subband and DL subband from the network, which allows it to determine the frequency resources that make up the UL subband and DL subband.
[0197] ii) Alternatively, the terminal may receive only information for the UL subband from the network, thereby enabling it to determine the frequency resources that constitute the UL subband. In this case, the remaining frequency resources within the system bandwidth (system BW), excluding those set / determined as the UL subband, can be determined to be the DL subband. Additionally, if the terminal receives information for the frequency resources that constitute the guard subband, the remaining frequency resources within the system bandwidth, excluding those set / determined as the UL subband and guard subband, can be determined to be the DL subband.
[0198] iii) Alternatively, the terminal may receive only information for the DL subband from the network, thereby enabling it to determine the frequency resources constituting the UL subband. In this case, the remaining frequency resources within the system bandwidth, excluding those set / determined as the DL subband, can be determined to be the UL subband. Additionally, if the terminal receives information for the frequency resources constituting the guard subband, the remaining frequency resources within the system bandwidth, excluding those set / determined as the DL subband and guard subband, can be determined to be the UL subband.
[0199] In this disclosure, a time resource operating in SBFD or an SBFD symbol may mean the "second time resource" described above. Also, in this disclosure, a time resource operating in TDD, a time resource operating in HD, a TDD symbol, or an HD symbol may mean the "first time resource" described above.
[0200] The DL subband referred to in this disclosure may mean the "first frequency resource" described above. The UL subband referred to in this disclosure may mean the "second frequency resource" described above.
[0201] Based on the above, this disclosure describes a terminal push transmission method when a single push transmission includes both SBFD symbols and non-SBFD symbols during intra-carrier full duplex operation within a carrier wave.
[0202] The contents of this disclosure are described assuming the transmission of PUSCH (including TBoMS), but can also be applied to the reception of PDSCH and the transmission of PUCCH.
[0203] This disclosure describes a SBFD operation in which cells perform DL and UL simultaneously using different frequency resources (subbands) within the same time resource. However, the contents of this disclosure can also apply when cells perform SSFD operation.
[0204] Figure 18 illustrates a case where the symbol resources allocated for PUSCH transmission within a slot include both SBFD symbols and non-SBFD symbols.
[0205] Referring to Figure 18, in the case of PUSCH repeat type A and / or TBoMS transmission, a PUSCH / TBoMS transmission within a slot consists of a continuous set of symbol resources within the slot.
[0206] If a slot can contain both non-SBFD and SBFD symbols, then, as shown in Figure 18, the symbol resources allocated for PUSCH (including TBoMS) transmission within the slot can contain both SBFD and non-SBFD symbols.
[0207] In the case of PUSCH repeat type B, a nominal repeat consists of consecutive symbol resources within a slot or within 12 adjacent slots. If a nominal repeat includes a slot boundary, the actual repeat is divided along the slot boundary. Therefore, an actual repeat consists of consecutive symbol resources within a slot.
[0208] Figure 19 illustrates a case where symbol resources allocated for PUSCH transmission in multiple slots include both SBFD symbols and non-SBFD symbols.
[0209] Referring to Figure 19, slot #N contains both SBFD and non-SBFD symbols. Slot #N+1 contains only SBFD symbols.
[0210] In such cases, the symbol resources allocated / configured for PUSCH transmission may include both SBFD symbols and non-SBFD symbols.
[0211] Push transmissions using SBFD symbols and push transmissions using non-SBFD symbols are not identical in various respects.
[0212] If, under an SBFD symbol, the PRB resources allocated for push transmission are not all contained within the UL subband, the number of PRBs used for push transmission under an SBFD symbol and push transmission under a non-SBFD symbol can differ from each other.
[0213] If the number of PRBs used in a push transmission with an SBFD symbol and a push transmission with a non-SBFD symbol are different (or for other reasons other than a difference in the number of PRBs), the terminal's UL transmit power (Tx power) can differ between the SBFD and non-SBFD symbols.
[0214] From the perspective of the base station, since the configurations such as antennas / panels / RFs for UL reception are not the same for SBFD symbols and non-SBFD symbols, channels, UL reception beams (Rx beams), etc. in the two resources can be different.
[0215] When performing PUSCH transmission using both non-SBFD symbols and SBFD symbols in the same transmission occasion, the terminal must apply different PUSCH transmission methods depending on the symbol type (i.e., whether it is an SBFD symbol or a non-SBFD symbol). And / or, the base station must apply different PUSCH reception methods depending on the symbol type (SBFD / non-SBFD symbols).
[0216] Therefore, various problems can occur when the terminal performs one PUSCH transmission using both non-SBFD symbols and SBFD symbols within a slot.
[0217] In view of such problems, the present disclosure proposes a PUSCH transmission method for a terminal when one PUSCH transmission is set to include both SBFD symbols and non-SBFD symbols.
[0218] The content of the present disclosure describes a transmission method based on the transmission symbol configuration of one PUSCH transmission (transmission occasion), but it can also be applied when PUSCH is transmitted repeatedly K times.
[0219] The content of the present disclosure is described assuming the transmission of PUSCH (including TBoMS), but the content of the present disclosure can also be applied to the reception of PDSCH and the transmission of PUCCH.
[0220] <A. PUSCH / TBoMS Transmission within a Slot>
[0221] This section proposes a method for terminal PUSCH transmissions when a single PUSCH transmission within a slot contains both SBFD and non-SBFD symbols. A single PUSCH transmission within a slot may include a TBoMS transmission within the same slot. This section can be applied to PUSCH repetition transmissions of PUSCH repetition type A.
[0222] If a single PUSCH transmission contains both SBFD and non-SBFD symbols (or is configured to contain both), the terminal may apply one of the following methods for the PUSCH transmission. Alternatively, the terminal may apply different methods depending on the instructions / conditions.
[0223] Method 1. If L (where L is a natural number greater than or equal to 2) symbols allocated for PUSCH transmission in a specific slot contain both non-SBFD symbols and SBFD symbols, the terminal will not perform a PUSCH transmission in that slot.
[0224] Method 2. If the L symbols allocated in the time domain for a PUSCH transmission within a specific slot include both non-SBFD and SBFD symbols, and all of the PRBs (physical resource blocks) allocated for the PUSCH transmission in the frequency domain are included in the PRB resources that make up the UL subband, the terminal will perform a PUSCH transmission using the L symbols in that slot. Otherwise, the terminal will not perform a PUSCH transmission in that slot.
[0225] Method 3. If the L symbols allocated in the time domain for PUSCH transmission within a specific slot include both non-SBFD and SBFD symbols, the PRB (or RBG) resources included in the UL subband from the PRB (or RBG) resources allocated for PUSCH transmission in the frequency domain are used to perform PUSCH transmission using the L symbols in that slot. In other words, the PRB (or RBG) resources included in the UL subband are used to perform PUSCH transmission using the L symbols in that slot, not only for SBFD symbols but also for non-SBFD symbols.
[0226] Method 4. If the L symbols allocated in the time domain for PUSCH transmission within a specific slot include both non-SBFD symbols and SBFD symbols, the terminal assumes (or determines) that all L symbols are SBFD symbols and, based on this, performs a PUSCH transmission of those L symbols in the slot.
[0227] Method 5. The terminal can only perform a PUSCH transmission using a symbol resource that has a specific symbol type, as shown below.
[0228] Operation 5-1: If a particular slot contains at least one non-SBFD symbol, the terminal will not perform a PUSCH transmission in that slot. In this case, if all symbols in the slot consist of SBFD symbols, the terminal will perform a PUSCH transmission in that slot.
[0229] Alternatively, if the symbol resources allocated for PUSCH transmission within a particular slot contain at least one non-SBFD symbol, the terminal will not perform a PUSCH transmission in that slot. In this case, if all the symbol resources allocated for PUSCH transmission within a particular slot consist of SBFD symbols, the terminal will perform a PUSCH transmission in that slot.
[0230] Operation 5-2: If a particular slot contains at least one SBFD symbol, the terminal will not perform a PUSCH transmission in that slot. In this case, if the entire set of symbols in the slot consists of non-SBFD symbols, the terminal will perform a PUSCH transmission in that slot.
[0231] Alternatively, if the symbol resources allocated for PUSCH transmission within a particular slot include at least one SBFD symbol, the terminal will not perform a PUSCH transmission in that slot. In this case, if all the symbol resources allocated for PUSCH transmission within a particular slot consist of non-SBFD symbols, the terminal will perform a PUSCH transmission in that slot.
[0232] In this case, the terminal can perform operation 5-1 or operation 5-2 according to the following criteria / conditions / instructions.
[0233] Option 1. If all symbols in the first slot instructed to transmit PUSCH consist of SBFD symbols, or if all symbols allocated for transmitting PUSCH in the first slot instructed to transmit PUSCH consist of SBFD symbols, the terminal applies operation 5-1. Otherwise, the terminal applies operation 5-2.
[0234] Option 2. If all symbols in the first slot instructed to transmit PUSCH consist of non-SBFD symbols, or if all symbols allocated for transmitting PUSCH in the first slot instructed to transmit PUSCH consist of non-SBFD symbols, the terminal applies operation 5-1. Otherwise, the terminal applies operation 5-2.
[0235] Option 3. The terminal applies operation 5-1 or operation 5-2 via network instructions. To this end, the terminal can receive instructions from the network, such as via RRC, MAC-CE, DCI signaling, etc., regarding the symbol type (SBFD symbol or non-SBFD symbol) used for PUSCH transmission. For example, this can be instructed via DCI, which schedules PUSCH.
[0236] At this time, the applicability of methods 2 / 3 / 4 may vary depending on the implementation method of the base station or the transmission method of the terminal. Taking this into consideration, different methods may be applied by instruction from the base station. For example, method 3 or method 1 may be applied by instruction from the base station. Such instructions may be given to the terminal, for example, via RRC signaling.
[0237] If a PUSCH transmission is not performed in a specific slot due to the aforementioned operation, the terminal does not include the slot constituting that PUSCH transmission in its available slots. In other words, when a PUSCH is transmitted K times, slots in which a PUSCH is not transmitted for the aforementioned reasons are not included in the K available slots in which a PUSCH transmission is set.
[0238] In this case, if a PUSCH is not transmitted in a particular slot due to SBFD symbols and / or non-SBFD symbols determined semi-statically by RRC and / or MAC-CE, that slot is not included in the available slots that constitute a PUSCH transmission. On the other hand, if a PUSCH is not transmitted in a particular slot due to SBFD symbols and / or non-SBFD symbols determined via DCI or DCI that does not schedule a PUSCH, the PUSCH transmission is not performed, but the slot can still be included in the available slots that constitute a PUSCH transmission.
[0239] <Nominal / Actual Repeated Transmission of B-Type PUSCH Repetition>
[0240] For the transmission of B-type PUSCH repetition, a symbol resource for one nominal repetition or actual repeated transmission is proposed for the PUSCH transmission method of the terminal when it includes both SBFD symbols and non-SBFD symbols.
[0241] The terminal can apply at least one of the following methods for nominal repetition or actual repeated transmission. Or, the terminal can apply methods that are different from each other according to instructions / conditions.
[0242] Method 1. When both non-SBFD symbols and SBFD symbols are included in L (L is a natural number greater than or equal to 2, the same hereinafter) symbols that constitute a specific nominal repetition, the terminal does not perform the transmission of the corresponding nominal repetition.
[0243] Or, when both non-SBFD symbols and SBFD symbols are included in L' (L' is a natural number smaller than L, that is, L' <= L, the same hereinafter) symbols that constitute a specific actual repetition, the terminal does not perform the transmission of the corresponding actual repetition.
[0244] Method 2. When both non-SBFD symbols and SBFD symbols are included in L symbols that constitute a specific nominal repetition, if all the PRBs allocated for PUSCH transmission are included in the PRB resources that constitute the UL subband, the terminal performs the nominal repetition transmission using the corresponding L symbols. Otherwise, the terminal does not perform the transmission of the corresponding nominal repetition.
[0245] Alternatively, if L' (<=L) symbols constituting a particular actual repetition include both non-SBFD and SBFD symbols, and all PRBs assigned to the PUSCH transmission are included in the PRB resources that make up the UL subband, the terminal will use those L' symbols to transmit the actual repetition. Otherwise, the terminal will not transmit the actual repetition.
[0246] Method 3. If the L symbols constituting a specific nominal repeat include both non-SBFD and SBFD symbols, the PRB (or RBG) resources included in the UL subband from the PRB (or RBG) resources allocated for PUSCH transmission are used to transmit the nominal repeat using the corresponding L symbols. In other words, the PRB (or RBG) resources included in the UL subband are used to transmit the nominal repeat using the corresponding L symbols, not only for SBFD symbols but also for non-SBFD symbols.
[0247] Alternatively, if the L' (<=L) symbols constituting a particular actual repetition include both non-SBFD and SBFD symbols, the PRB (or RBG) resources included in the UL subband from the PRB (or RBG) resources allocated for the PUSCH transmission are used to perform the transmission of the actual repetition using the corresponding L' symbols. In other words, the PRB (or RBG) resources included in the UL subband are used to perform the transmission of the actual repetition using the corresponding L' symbols, not only for SBFD symbols but also for non-SBFD symbols.
[0248] Method 4. If the L symbols constituting a particular nominal repeat include both non-SBFD symbols and SBFD symbols, the terminal assumes (or determines) that all L symbols are SBFD symbols and, based on this, uses those L symbols to transmit the nominal repeat.
[0249] Alternatively, if the L' (<=L) symbols constituting a particular actual repetition include both non-SBFD and SBFD symbols, the terminal assumes (or determines) that all L' symbols are SBFD symbols and uses those L' symbols to transmit the actual repetition.
[0250] Method 5. Include SBFD symbols or non-SBFD symbols in the invalid symbols used to determine the symbol resources that constitute the actual repetition. Therefore, such symbols are not included in the symbols that perform the actual repetition.
[0251] At this time, it can be determined which of the SBFD symbols or non-SBFD symbols are included in the invalid symbols as follows:
[0252] Alt1. The terminal receives instructions from the base station regarding which symbols, either SBFD symbols or non-SBFD symbols, are included in the invalid symbols. Such instructions may be given via RRC, MAC-CE, and / or DCI signaling.
[0253] Alt2.PUSCH includes symbols that are not identical to the specified type as invalid symbols, depending on the instruction for the type of symbol being sent. For example, a terminal can receive instructions regarding the symbol type (SBFD symbol / non-SBFD symbol) of the symbol resource executing the PUSCH transmission via DCI, which schedules the PUSCH transmission from the network. That is, it can receive instructions on whether to execute the PUSCH transmission assuming an SBFD symbol or a non-SBFD symbol. For example, if a terminal receives instructions to execute the PUSCH transmission assuming an SBFD symbol, it will determine that non-SBFD symbols are invalid symbols. Conversely, if a terminal receives instructions to execute the PUSCH transmission assuming a non-SBFD symbol, it will determine that SBFD symbols are invalid symbols.
[0254] Alt3. If the first symbol in a nominal repeat is a non-SBFD symbol, the SBFD symbol is included in the invalid symbols. Additionally, if the first symbol in a nominal repeat is an SBFD symbol, the non-SBFD symbol is included in the invalid symbols.
[0255] When the number of repetitions of Alt4.PUSCH repeat type B is K, if the first symbol in the first nominal repeat is a non-SBFD symbol, then the SBFD symbol is included in the invalid symbols. Additionally, if the first symbol in the first nominal repeat is an SBFD symbol, then the non-SBFD symbol is included in the invalid symbols.
[0256] Additionally, this method can be applied to perform a PUSCH transmission if, for a particular nominal repetition, not all PRBs allocated for PUSCH transmission are included in the PRB resources that make up the UL subband.
[0257] Method 6. When both non-SBFD symbols and SBFD symbols are included in the L symbols that constitute a specific nominal repetition, the actual repetition is divided based on the boundary between the SBFD symbol resource and the non-SBFD symbol resource.
[0258] For example, in FIG. 19, among the four symbols that constitute Nominal Repetition 2, the first and second symbols are SBFD symbols, and the third and fourth symbols are non-SBFD symbols. In this case, based on the boundary between the SBFD symbol resource and the non-SBFD symbol resource, the first and second symbols constitute one actual repetition, and the third and fourth symbols constitute another actual repetition. This will be described in detail with reference to FIG. 21.
[0259] Additionally, for a specific nominal repetition, when all the PRBs allocated for PUSCH transmission are not included in the PRB resources that constitute the UL subbands, such a method can be applied to perform PUSCH transmission.
[0260] At this time, depending on the implementation method of the base station or the transmission method of the terminal, the applicability of the above method can change. Considering this, different methods can be applied according to the instructions of the base station. For example, according to the instructions of the base station, Method 3 or Method 1 can be applied. Such instructions can be instructed to the terminal via, for example, RRC signaling.
[0261] FIG. 20 illustrates an operation method of a terminal in a wireless communication system.
[0262] Referring to FIG. 20, the terminal receives information used when setting parameters of an uplink data channel applicable to a specific frequency band (S201).
[0263] The information is, for example, a PUSCH-Config which is an information element used when setting terminal-specific PUSCH parameters applicable to a specific BWP.
[0264] The terminal executes repeated transmission of the uplink data channel based on the information. In the repeated transmission, when both a full duplex (FD) time resource and a half duplex (HD) time resource are included in the time resource set for transmission of a specific uplink data channel, the terminal skips / drops the transmission of the specific uplink data channel (S202). That is, the terminal drops the transmission of the specific uplink data channel or does not execute the transmission of the specific uplink data channel.
[0265] According to an embodiment, the terminal can further receive a repetition type indicator for informing the type of repeated transmission of the uplink data channel.
[0266] For example, the terminal can receive the provision of an indicator (e.g., "pusch-RepTypeIndicatorDCI-0-1", "pusch-RepTypeIndicatorDCI-0-2") for indicating the type of PUSCH repeated transmission via an RRC message / information element ("PUSCH-Config") used when setting terminal-specific PUSCH parameters applicable to a specific BWP (bandwidth part).
[0267] For example, "pusch-RepTypeIndicatorDCI-0-1" and "pusch-RepTypeIndicatorDCI-0-2" respectively indicate whether a terminal should follow PUSCH repeat type A operation or PUSCH repeat type B operation in response to a configured grant (CG) transmission linked to a PUSCH and / or activating DCI format 0_1 / 0_2 scheduled according to DCI format 0_1 and DCI format 0_2. "pusch-RepTypeIndicatorDCI-0-1" and "pusch-RepTypeIndicatorDCI-0-2" activate PUSCH repeat type A or PUSCH repeat type B, respectively. "pusch-RepTypeIndicatorDCI-0-1" is applied to DCI format 0_1, and "pusch-RepTypeIndicatorDCI-0-2" is applied to DCI format 0_2.
[0268] Based on the repeat type indicator, the terminal can determine that the repeat transmission type of the uplink data channel is one of the first repeat type and the second repeat type.
[0269] For example, the first repeat type is a physical uplink shared channel (PUSCH) repeat type A, which has the same transmit start symbol and transmit symbol length in each slot and is configured to perform repeated transmissions of the uplink data channel. A PUSCH repeat type A can contain only one PUSCH repeat in a single slot.
[0270] The second repetition type is PUSCH repetition type B, which is configured to perform repeated transmissions of the uplink data channel in units of the transmit symbol length. In PUSCH repetition type B, multiple PUSCH repetitions can be included in a single slot. When repeatedly transmitting a PUSCH with PUSCH repetition type B, if the symbols of the transmit symbol length include a slot boundary or an invalid symbol, two actual repetition transmissions are performed with the slot boundary or the invalid symbol as the boundary.
[0271] PUSCH repeater type A and PUSCH repeater type B have already been described in detail with reference to Figures 12 and 13.
[0272] The terminal can perform repeated transmissions on the uplink data channel based on the determined repeat type.
[0273] In this case, if the slot contains both full-duplex (FD) time resources and half-duplex (HD) time resources for transmitting the uplink data channel, the uplink data channel transmission operation can be performed differently from each other depending on the determined repetition type.
[0274] For example, the FD time resource is an SBFD symbol that enables the terminal to operate in SBFD (subband-wise full duplex), and the HD time resource is a non-SBFD symbol.
[0275] More specifically, when repeatedly transmitting the uplink data channel (PUSCH) in the first repeating type (PUSCH repeating type A), if both the FD time resource and the HD time resource are included in a specific slot for transmitting the uplink data channel, the transmission of the uplink data channel will not be performed in that specific slot.
[0276] In other words, as shown in Figure 18, it is possible for both non-SBFD symbols and SBFD symbols to exist within a specific slot, and for the symbol resources allocated / configured for repeated PUSCH (including TBoMS) transmissions to include both SBFD symbols and non-SBFD symbols.
[0277] When PUSCH repetition type A is set, PUSCH transmission can be dropped / skipped in the specified slot. With this method, when PUSCH repetition type A is executed, only symbols of the same type will exist in each slot where PUSCH repetition is actually performed. Therefore, the complexity of executing PUSCH repetition type A can be reduced, and situations where the transmit power / transmit / receive beam, etc., need to be changed as the symbol type of each symbol changes within each slot can be prevented.
[0278] On the other hand, when repeatedly transmitting an uplink data channel (PUSCH) using the second repeating type (PUSCH repeating type B), if both the FD time resource and the HD time resource are included in a specific slot for transmitting the uplink data channel, the uplink data channel can also be repeatedly transmitted via different actual transmission resources based on the boundary between the FD time resource and the HD time resource.
[0279] This method allows each PUSCH to be transmitted using only symbols of the same symbol type, thus preventing variations in frequency resources, transmission power, and transmission beam for PUSCH transmission depending on the transmitted symbol. As a result, the complexity of PUSCH transmission can be reduced, and the efficiency of PUSCH transmission can be increased.
[0280] In the embodiment, if the time resources constituting a PUSCH transmission include both SBFD symbols and non-SBFD symbols, the PUSCH transmission may or may not be performed using the frequency resources allocated for the PUSCH transmission. In other words, if the time resources constituting a PUSCH transmission include both SBFD symbols and non-SBFD symbols, whether or not to transmit the PUSCH is dependent on the frequency resources allocated for the PUSCH transmission.
[0281] For example, if the time resources constituting a PUSCH transmission include both SBFD symbols and non-SBFD symbols, then for a terminal to transmit the PUSCH, the frequency resources allocated for the PUSCH transmission (e.g., PRB) must not include resources outside the UL subband.
[0282] In other words, if the time resources constituting a PUSCH transmission include both SBFD symbols and non-SBFD symbols, i) if the PRB resources allocated for the PUSCH transmission include resources outside the UL subband, the terminal will not transmit the PUSCH; and ii) if all the PRB resources allocated for the PUSCH transmission are within the UL subband, the terminal may transmit the PUSCH.
[0283] Figure 21 illustrates how to repeatedly transmit a PUSCH signal using PUSCH Repeat Type B when a specific slot contains symbols of different types (SBFD symbols and non-SBFD symbols).
[0284] As shown in FIG. 21, slot #N includes both SBFD symbols and non-SBFD symbols, slot #N+1 includes only SBFD symbols, and it may occur that the symbol resources allocated / set for PUSCH transmission include both SBFD symbols and non-SBFD symbols.
[0285] In FIG. 21, among the four symbols constituting Nominal Repetition 2, the first and second symbols are SBFD symbols, and the third and fourth symbols are non-SBFD symbols. In this case, based on the boundary between the SBFD symbol resources and the non-SBFD symbol resources, the first and second symbols constitute one actual repetition, and the third and fourth symbols constitute another actual repetition. That is, using the boundary between the FD time resources (SBFD symbols) and the HD time resources (non-SBFD symbols) in the four symbols constituting Nominal Repetition 2, the uplink data channel is repeatedly transmitted via different actual transmission resources.
[0286] Then, two actual repetitions of transmission are performed based on the slot boundary.
[0287] Therefore, when PUSCH repetition type B is set, the four nominal repetitions (nominal repetitions 0 to nominal repetition 3) in FIG. 21 can be executed with a total of five actual repetitions in slot #N and one actual repetition in slot #N+1.
[0288] This method ensures that all symbols on which each actual repetition is performed have the same symbol type. That is, all symbols on which each actual repetition is performed are either all SBFD symbols or all non-SBFD symbols. Therefore, there is the advantage that in a single actual repetition transmission, situations arise where it is necessary to use different transmit power or transmit / receive beams for each symbol.
[0289] Figure 22 illustrates the signaling process and operation method between a base station and a terminal.
[0290] Referring to Figure 22, the base station provides TDD configuration information to the terminal (S221).
[0291] The TDD configuration information is an example of the information used to configure the HD time resources and HD frequency resources mentioned above.
[0292] The base station provides FD resource information to the terminal (S222). FD resource information is information that informs the terminal of FD time resources and / or FD frequency resources.
[0293] The base station provides the terminal with a repeating type indicator (S223).
[0294] For example, a base station can provide indicators (e.g., "pusch-RepTypeIndicatorDCI-0-1", "pusch-RepTypeIndicatorDCI-0-2") that specify the type of PUSCH repetition transmission via an RRC message / information element ("PUSCH-Config") used when setting terminal-specific PUSCH parameters applicable to a particular BWP (bandwidth part).
[0295] The terminal determines the repeat type (S224). For example, based on the repeat type indicator, the terminal can determine the type of PUSCH repeat transmission as either PUSCH repeat type A or PUSCH repeat type B.
[0296] If the slot contains both FD time resources and HD time resources for transmitting the uplink data channel, the terminal performs the uplink data channel transmission operation in a manner that differs from one another depending on the determined repetition type (and / or whether all the frequency resources set for transmitting the uplink data channel are included in the UL subband) (S225). The frequency resources set for transmitting the uplink data channel can be dynamically set by DCI.
[0297] The specific operation has been explained in detail with reference to Figures 18 to 21.
[0298] Figure 23 illustrates wireless devices to which this specification may be applied.
[0299] Referring to Figure 23, the first wireless device 100 and the second wireless device 200 can transmit and receive wireless signals via various wireless connectivity technologies (e.g., LTE, NR).
[0300] The first wireless device 100 includes at least one processor 102 and at least one memory 104, and may further include at least one transceiver 106 and / or at least one antenna 108. At least one processor (hereinafter simply referred to as processor) 102 may control at least one memory (hereinafter simply referred to as memory) 104 and / or at least one transceiver (hereinafter simply referred to as transceiver or transceiver) 106 and be configured to embody the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. For example, the processor 102 processes information in memory 104 to generate first information / signal, and then transmits a wireless signal containing the first information / signal via transceiver 106. Alternatively, after the processor 102 receives a wireless signal containing second information / signal by transceiver 106, it stores the information obtained from signal processing of the second information / signal in memory 104. Memory 104 is connected to processor 102 and stores various information relating to the operation of processor 102. For example, memory 104 stores software code containing instructions for performing some or all of the processes controlled by processor 102, or for performing the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed herein. Here, processor 102 and memory 104 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). Transceiver 106 is connected to processor 102 and transmits and / or receives wireless signals via one or more antennas 108. Transceiver 106 includes a transmitter and / or receiver. Transceiver 106 may be mixed with an RF (Radio Frequency) unit. In this disclosure, wireless equipment may also mean a communication modem / circuit / chip. Processor 102 is,
[0301] The system receives information used to set the parameters of an uplink data channel applicable to a specific frequency band, and performs repeated transmission of the uplink data channel based on the information. In the repeated transmission, if the time resources set for the transmission of the specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission of the specific uplink data channel is skipped / dropped, or the transmission of the specific uplink data channel is skipped / dropped dependently on the frequency resources set for the transmission of the specific uplink data channel. The specific operation has been explained with reference to Figures 18 to 21.
[0302] 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 is configured to control the memories 204 and / or transceivers 206 and to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. For example, the processor 202 processes information in the memory 204 to generate third information / signals and then transmits a wireless signal containing the third information / signals via the transceiver 206. The processor 202 also receives a wireless signal containing fourth information / signals via the transceiver 206 and then stores the information obtained from signal processing of the fourth information / signals in the memory 204. The memory 204 is connected to the processor 202 and stores various information relating to the operation of the processor 202. For example, memory 204 stores software code containing instructions for performing some or all of the processes controlled by processor 202, or for performing the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. Here, processor 202 and memory 204 may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). Transceiver 206 is connected to processor 202 and transmits and / or receives radio signals via one or more antennas 208. Transceiver 206 includes a transmitter and / or receiver. Transceiver 206 may be mixed with an RF unit. In this disclosure, radio equipment may also mean a communication modem / circuit / chip. Processor 202 transmits information used when setting parameters for an uplink data channel applicable to a particular frequency band to a terminal and repeatedly receives the uplink data channel based on said information.In the repeated reception described above, if the time resources for receiving a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, reception of the specific uplink data channel is skipped / dropped, or reception of the specific uplink data channel is skipped / dropped dependently to the frequency resources set for receiving the specific uplink data channel. The specific operation has been explained with reference to Figures 18 to 21.
[0303] The hardware elements of wireless devices 100 and 200 are described in more detail below. While not limited to these, one or more protocol layers can be implemented by one or more processors 102 and 202. For example, one or more processors 102 and 202 can implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 generate one or more PDUs (Protocol Data Units) and / or one or more SDUs (Service Data Units) according to the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this document. One or more processors 102, 202 generate signals (e.g., baseband signals) containing PDUs, SDUs, messages, control information, data, or information in accordance with the functions, procedures, suggestions, and / or methods disclosed in this document and provide them to one or more transceivers 106, 206. One or more processors 102, 202 receive signals (e.g., baseband signals) from one or more transceivers 106, 206 and acquire PDUs, SDUs, messages, control information, data, or information in accordance with the descriptions, functions, procedures, suggestions, methods, and / or operation flowcharts disclosed in this document.
[0304] One or more processors 102, 202 may be called controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102, 202 can be implemented by hardware, firmware, software, or a combination thereof. For example, one or more ASICs (Application Specific Integrated Circuits), one or more DSPs (Digital Signal Processors), one or more DSPDs (Digital Signal Processing Devices), one or more PLDs (Programmable Logic Devices), or one or more FPGAs (Field Programmable Gate Arrays) may be included in one or more processors 102, 202. One or more processors 102, 202 can also be implemented by a computer-readable medium (CRM) containing instructions that are based on execution by at least one processor.
[0305] In other words, a computer-readable medium (CRM) containing instructions based on execution by at least one processor performs the steps of: receiving information used to set parameters for an uplink data channel applicable to a specific frequency band; and repeatedly transmitting the uplink data channel based on the information. In the repeated transmission, if the time resources set for the transmission of the specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission of the specific uplink data channel is skipped / dropped, or the transmission of the specific uplink data channel is skipped / dropped dependently on the frequency resources set for the transmission of the specific uplink data channel. The specific operation has been explained with reference to Figures 18 to 21.
[0306] The descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed herein can be implemented using firmware or software, and the firmware or software can be implemented to include modules, procedures, functions, etc. Firmware or software configured to execute the descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed herein may be contained in one or more processors 102, 202 or stored in one or more memories 104, 204 and driven by one or more processors 102, 202. The descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed herein can be implemented using firmware or software in the form of code, instructions, and / or sets of instructions.
[0307] One or more memory units 104, 204 are connected to one or more processors 102, 202 and store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memory units 104, 204 consist of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer read / store media, and / or combinations thereof. One or more memory units 104, 204 are located inside and / or outside one or more processors 102, 202. Furthermore, one or more memory units 104, 204 are connected to one or more processors 102, 202 by various technologies such as wired or wireless connections.
[0308] One or more transceivers 106, 206 transmit user data, control information, radio signals / channels, etc., as referred to in the methods and / or operation flowcharts of this document to one or more other devices. One or more transceivers 106, 206 receive user data, control information, radio signals / channels, etc., as referred to in the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document from one or more other devices. For example, one or more transceivers 106, 206 are connected to one or more processors 102, 202 to transmit and receive radio signals. For example, one or more processors 102, 202 control one or more transceivers 106, 206 to transmit user data, control information or radio signals to one or more other devices. Also, one or more processors 102, 202 control one or more transceivers 106, 206 to receive user data, control information or radio signals from one or more other devices. Furthermore, one or more transceivers 106, 206 are connected to one or more antennas 108, 208, and are configured to transmit and receive user data, control information, radio signals / channels, etc., as described in the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document, via one or more antennas 108, 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106, 206 convert the received user data, control information, radio signals / channels, etc., from RF band signals to baseband signals for processing by one or more processors 102, 202. One or more transceivers 106, 206 convert the user data, control information, radio signals / channels, etc., processed by one or more processors 102, 202, from baseband signals to RF band signals. For this purpose, one or more transceivers 106, 206 include (analog) oscillators and / or filters.
[0309] Figure 24 shows an example of a signal processing module structure. Here, signal processing can also be performed by processors 102 and 202 in Figure 23.
[0310] Referring to Figure 24, a transmitting device within a terminal or base station (e.g., a processor, a processor and memory, or a processor and transceiver) may include a scrambler 301, a modulator 302, a layer mapper 303, an antenna port mapper 304, a resource block mapper 305, and a signal generator 306.
[0311] The transmitting device can transmit one or more codewords. Each coded bit within each codeword is scrambled by the scrambler 301 and transmitted over the physical channel. A codeword is also called a data sequence and is equivalent to a transport block, which is a data block provided by the MAC hierarchy.
[0312] The scrambled bits are modulated into complex-valued modulation symbols by modulator 302. Modulator 302 can modulate the scrambled bits according to the modulation scheme and place them in complex-valued modulation symbols that represent positions on a signal constellation. There are no restrictions on the modulation scheme, and m-PSK (m-Phase Shift Keying) or m-QAM (m-Quadrature Amplitude Modulation), among others, can be used to modulate the encoded data. The modulator is also called a modulation mapper.
[0313] The complex modulation symbols can be mapped on one or more transmission layers by the layer mapper 303. The complex modulation symbols on each layer can be mapped on the antenna port mapper 304 for transmission on the antenna port.
[0314] The resource block mapper 305 can map complex modulation symbols for each antenna port to the appropriate resource element within a virtual resource block allocated for transmission. The resource block mapper can map the virtual resource block to a physical resource block using an appropriate mapping scheme. The resource block mapper 305 can assign the complex modulation symbols for each antenna port to the appropriate subcarrier, which can then be multiplexed by the user.
[0315] The signal generator 306 can modulate complex modulation symbols for each antenna port, i.e., antenna-specific symbols, using a specific modulation scheme, such as OFDM (Orthogonal Frequency Division Multiplexing), to generate complex-valued time domain OFDM symbol signals. The signal generator can perform an IFFT (Inverse Fast Fourier Transform) on the antenna-specific symbols, and a CP (Cyclic Prefix) can be inserted into the time domain symbols after the IFFT has been performed. The OFDM symbols are transmitted to the receiving device via each transmitting antenna after undergoing digital-to-analog conversion, frequency uplink conversion, etc. The signal generator may include an IFFT module, a CP inserter, a DAC (Digital-to-Analog Converter), a frequency uplink converter, etc.
[0316] Figure 25 shows another example of a signal processing module structure within a transmitting device. Here, signal processing can be performed by the terminal / base station processors, such as processors 102, 202, etc., in Figure 23.
[0317] Referring to Figure 25, a transmitting device within a terminal or base station (e.g., a processor, a processor and memory, or a processor and transceiver) may include a scrambler 401, a modulator 402, a layer mapper 403, a precoder 404, a resource block mapper 405, and a signal generator 406.
[0318] The transmitting device can transmit a codeword via a physical channel after scrambling the coded bits within the codeword using the scrambler 401.
[0319] The scrambled bits are modulated into complex modulation symbols by modulator 402. The modulator can modulate the scrambled bits using a predetermined modulation scheme to place them into complex modulation symbols that represent positions on a signal constellation. There are no restrictions on the modulation scheme, and pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data.
[0320] The complex modulation symbols can be mapped to one or more transmission layers by the layer mapper 403.
[0321] The complex modulation symbols on each layer can be precoded by the precoder 404 for transmission on the antenna port. Here, the precoder can perform transform precoding on the complex modulation symbols before performing precoding. Alternatively, the precoder can perform precoding without performing transform precoding. The precoder 404 processes the complex modulation symbols in a MIMO manner using multiplexed transmitting antennas to output antenna-specific symbols, and can distribute these antenna-specific symbols to the corresponding resource block mapper 405. The output z of the precoder 404 can be obtained by multiplying the output y of the layer mapper 403 by the precoding matrix W of NXM, where N is the number of antenna ports and M is the number of layers.
[0322] The resource block mapper 405 maps the demodulated modulation symbols for each antenna port to the appropriate resource elements within the virtual resource block allocated for transmission.
[0323] The resource block mapper 405 assigns complex modulation symbols to appropriate subcarriers, which can then be multiplexed by the user.
[0324] The signal generator 406 can generate complex-valued-time-domain OFDM (Orthogonal Frequency Division Multiplexing) symbol signals by modulating complex modulation symbols to a specific modulation scheme, such as OFDM. The signal generator 406 can perform an IFFT (Inverse Fast Fourier Transform) on antenna-specific symbols, and a CP (Cyclic Prefix) can be inserted into the time-domain symbols after the IFFT has been performed. The OFDM symbols are transmitted to the receiving device via each transmitting antenna after undergoing digital-to-analog conversion, frequency uplink conversion, etc. The signal generator 406 may include an IFFT module, a CP inserter, a DAC (Digital-to-Analog Converter), a frequency uplink converter, etc.
[0325] The signal processing process of the receiving device can be configured in reverse of the signal processing process of the transmitter. Specifically, the processor of the receiving device performs decoding and demodulation of radio signals received externally via the antenna ports of the transceiver. The receiving device may include multiple receiving antennas, and each signal received via the receiving antennas is restored to a baseband signal, then multiplexed and MIMO demodulated to be restored to the data sequence that the transmitter originally intended to transmit. The receiving device 1820 may include a signal restorer for restoring the received signal to a baseband signal, a multiplexer for combining and multiplexing the processed received signals, and a channel demodulator for demodulating the multiplexed signal sequence to the corresponding codeword. The signal restorer, multiplexer, and channel demodulator may be configured as a single integrated module performing these functions or as separate independent modules. More specifically, the signal restorer may include an ADC (analog-to-digital converter) that converts an analog signal to a digital signal, a CP remover that removes CP from the digital signal, an FFT module that applies an FFT (fast Fourier transform) to the signal from which CP has been removed to output a frequency domain symbol, and a resource element demapper / equalizer that restores the frequency domain symbol to an antenna-specific symbol. The antenna-specific symbol is restored to the transmission layer by a multiplexer, and the transmission layer is restored to the codeword that the transmitting device intended to transmit by a channel demodulator.
[0326] Figure 26 shows an example of a wireless communication device relating to an embodiment of the present disclosure.
[0327] Referring to Figure 26, a wireless communication device, such as a terminal, may include at least one of the following: a processor 2310 such as a digital signal processor (DSP) or microprocessor, a transceiver 2335, a power management module 2305, an antenna 2340, a battery 2355, a display 2315, a keypad 2320, a GPS (Global Positioning System) chip 2360, a sensor 2365, a memory 2330, a SIM (Subscriber Identification Module) card 2325, a speaker 2345, and a microphone 2350. There may be multiple antennas and processors.
[0328] Processor 2310 can embody the functions, procedures, and methods described herein. Processor 2310 in Figure 26 is the same as processors 102 and 202 in Figure 23.
[0329] Memory 2330 is connected to processor 2310 and stores information related to the operation of the processor. Memory can be located inside or outside the processor and can be connected to the processor via various technologies such as wired or wireless connections. Memory 2330 in Figure 26 is the same as memories 104 and 204 in Figure 23.
[0330] The user can input various types of information, such as phone numbers, using various techniques, such as pressing buttons on the keypad 2320 or activating voice using the microphone 2350. The processor 2310 receives and processes the user's information and can perform appropriate functions, such as making a call to the entered phone number. In some scenarios, data can be retrieved from the SIM card 2325 or memory 2330 to perform appropriate functions. In some scenarios, the processor 2310 can display various types of information and data on the display 2315 for the user's convenience.
[0331] The transceiver 2335 is connected to the processor 2310 and transmits and / or receives radio signals such as RF (Radio Frequency) signals. The processor can control the transceiver to initiate communication or transmit radio signals containing various types of information or data, such as voice communication data. The transceiver includes a transmitter and a receiver for transmitting and receiving radio signals. The antenna 2340 facilitates the transmission and reception of radio signals. In some embodiments, upon receiving a radio signal, the transceiver can forward and convert the signal to a baseband frequency for processing by the processor. The processed signal can be processed by various techniques, such as being converted into audible or readable information to be output via the speaker 2345. The transceiver in Figure 26 is the transceiver 106, 206 in Figure 29.
[0332] Although not shown in Figure 26, various additional components such as a camera and a USB (Universal Serial Bus) port can be included in the terminal. For example, the camera can be connected to the processor 2310.
[0333] Figure 26 is merely one example of a terminal, and is not limited to this example. A terminal does not necessarily have to include all the elements in Figure 26. That is, some components, such as the keypad 2320, GPS (Global Positioning System) chip 2360, sensor 2365, and SIM card 2325, may not be essential and may not be included in the terminal.
[0334] Figure 27 shows an example of processor 2000.
[0335] Referring to Figure 27, the processor 2000 may include a control channel transceiver 2010 and a data channel transceiver 2020. The processor 2000 can, for example, execute the methods described in Figures 18 to 22 from a terminal perspective. The processor 2000 is an example of the processors 102 and 202 in Figure 23.
[0336] Figure 28 shows an example of processor 3000.
[0337] Referring to Figure 28, the processor 3000 may include a control information / data generation module 3010 and a transmit / receive module 3020. The processor 3000 can perform the methods described in Figures 18 to 22, for example, from the perspective of a base station or network. The processor 3000 is an example of the processors 102 and 202 in Figure 23.
[0338] Figure 29 illustrates another example of a wireless device.
[0339] According to Figure 29, the wireless device may include at least one processor 102, 202, at least one memory 104, 204, at least one transceiver 106, 206, and one or more antennas 108, 208.
[0340] The difference between the wireless device example described in Figure 23 and the wireless device example in Figure 29 is that in Figure 23, the processors 102 and 202 and the memory 104 and 204 are separate, while in the example in Figure 29, the memory 104 and 204 are included in the processors 102 and 202. In other words, the processor and memory can also constitute a single chipset.
[0341] Figure 30 shows another example of wireless equipment to which this specification applies. Wireless equipment can be embodied in a variety of forms depending on the use-example / service.
[0342] Referring to Figure 30, the wireless devices 100 and 200 can correspond to the wireless devices in Figure 23 and can be composed of various elements, components, units, and / or modules. For example, the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional element 140. The communication unit may include a communication circuit 112 and transceivers (etc.) 114. For example, the communication circuit 112 may include one or more processors 102, 202 and / or one or more memories 104, 204. For example, the transceivers (etc.) 114 may include one or more transceivers 106, 206 and / or one or more antennas 108, 208 in Figure 23. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140 to control various operations of the wireless device. For example, the control unit 120 can control the electrical / mechanical operation of wireless equipment based on programs / codes / instructions / information stored in the memory unit 130. The control unit 120 can also transmit information stored in the memory unit 130 to an external source (e.g., another communication device) via a wireless / wired interface through the communication unit 110, or store information received from an external source (e.g., another communication device) via a wireless / wired interface through the communication unit 110 in the memory unit 130.
[0343] The additional element 140 can be configured in various ways depending on the type of wireless device. For example, the additional element 140 may include at least one of the following: a power unit / battery, an input / output unit (I / O unit), a drive unit, and a computing unit. However, wireless devices can be embodied in forms such as robots (100a in Figure 34), vehicles (100b-1 and 100b-2 in Figure 34), XR devices (100c in Figure 34), mobile devices (100d in Figure 34), home appliances (100e in Figure 34), IoT devices (100f in Figure 34), digital broadcasting terminals, hologram devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices (400 in Figure 34), base stations (200 in Figure 34), and network nodes. Depending on the use-example / service, wireless devices may be mobile or used in a fixed location.
[0344] In Figure 30, the various elements, components, units / parts, and / or modules within the wireless devices 100 and 200 can be interconnected as a whole via a wired interface, or at least some of them can be connected wirelessly via the communication unit 110. For example, within the wireless devices 100 and 200, the control unit 120 and the communication unit 110 can be connected via a wired interface, and the control unit 120 and the first units (e.g., 130, 140) can be connected wirelessly via the communication unit 110. Furthermore, each element, component, unit / part, and / or module within the wireless devices 100 and 200 may further include one or more elements. For example, the control unit 120 may consist of one or more processor sets. For example, the control unit 120 may consist of a set of communication control processors, application processors, ECUs (Electronic Control Units), graphics processing processors, memory control processors, etc. As another example, the memory unit 130 may consist of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.
[0345] Figure 31 illustrates a portable device to which this specification applies. Portable devices may include smartphones, smartpads, wearable devices (e.g., smartwatches, smart glasses), and portable computers (e.g., laptops, etc.). Portable devices may be referred to as MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile Station), or WT (Wireless terminal).
[0346] Referring to Figure 31, the portable device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input / output unit 140c. The antenna unit 108 may be composed of a part of the communication unit 110. Blocks 110-130 / 140a-140c correspond to blocks 110-130 / 140 in Figure 30, respectively.
[0347] The communication unit 110 can send and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit 120 can perform various operations by controlling the components of the portable device 100. The control unit 120 may include an AP (Application Processor). The memory unit 130 can store data / parameters / programs / code / instructions necessary for driving the portable device 100. The memory unit 130 can also store input / output data / information, etc. The power supply unit 140a supplies power to the portable device 100 and may include wired / wireless charging circuits, batteries, etc. The interface unit 140b can support the connection of the portable device 100 with other external devices. The interface unit 140b may include various ports for connection with external devices (e.g., audio input / output ports, video input / output ports). The input / output unit 140c can receive and output video information / signals, audio information / signals, data, and / or information input from the user. The input / output section 140c may include a camera, microphone, user input section, display section 140d, speaker and / or haptic module, etc.
[0348] For example, in the case of data communication, the input / output unit 140c acquires information / signals (e.g., touch, text, voice, image, video) input from the user, and the acquired information / signals can be stored in the memory unit 130. The communication unit 110 converts the information / signals stored in memory into a radio signal and can transmit the converted radio signal directly to other radio devices or to a base station. Furthermore, after receiving a radio signal from another radio device or base station, the communication unit 110 can restore the received radio signal to its original information / signal. The restored information / signal is stored in the memory unit 130 and can then be output via the input / output unit 140c in various forms (e.g., text, voice, image, video, haptic).
[0349] Figure 32 illustrates a communication system 1 to which this specification applies.
[0350] Referring to Figure 32, the communication system 1 to which this specification applies includes wireless equipment, base stations, and a network. Here, wireless equipment means equipment that performs communication using wireless connectivity technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)), and is also called communication / wireless / 5G equipment. Although not limited to these, wireless equipment may include robots 100a, vehicles 100b-1, 100b-2, XR (eXtended Reality) equipment 100c, handheld devices 100d, home appliances 100e, IoT (Internet of Things) equipment 100f, and AI equipment / servers 400. For example, vehicles may include vehicles equipped with wireless communication capabilities, autonomous vehicles, and vehicles capable of performing vehicle-to-vehicle communication. Here, vehicles may include UAVs (Unmanned Aerial Vehicles) (e.g., drones). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices and can be embodied in forms such as HMDs (Head-Mounted Devices), HUDs (Head-Up Displays) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, and robots. Portable devices can include smartphones, smart pads, wearable devices (e.g., smartwatches, smart glasses), and computers (e.g., notebooks). Home appliances can include TVs, refrigerators, and washing machines. IoT devices can include sensors, smart meters, and so on. For example, base stations and networks can also be embodied in wireless devices, and specific wireless devices 200a can also operate as base stations / network nodes for other wireless devices.
[0351] Wireless devices 100a to 100f can be connected to network 300 via base station 200. Artificial Intelligence (AI) technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to AI server 400 via network 300. Network 300 can be configured using a 3G network, 4G (e.g., LTE) network, or 5G (e.g., NR) network, etc. Wireless devices 100a to 100f can communicate with each other via base station 200 / network 300, but they can also communicate directly without going through base station / network (e.g., sidelink communication). For example, vehicles 100b-1 and 100b-2 can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Furthermore, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices 100a-100f.
[0352] Wireless communication / connection 150a, 150b, and 150c can be performed between wireless devices 100a-100f / base station 200 and between base stations 200 / base station 200. Here, wireless communication / connection can be performed via uplink / downlink communication 150a and sidelink communication 150b (or D2D communication), and communication between base stations 150c (e.g., relay, IAB (Integrated Access Backhaul), or via various wireless connectivity technologies (e.g., 5G NR)). Through wireless communication / connection 150a, 150b, and 150c, wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection 150a, 150b, and 150c can transmit / receive signals via various physical channels. To this end, at least some of the following can be performed based on the various proposals herein: various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), resource allocation processes, etc.
[0353] On the other hand, NR supports a number of numerologies (or subcarrier spacings (SCS)) to support a variety of 5G services. For example, an SCS of 15kHz supports wide area in the traditional cellular band; an SCS of 30kHz / 60kHz supports dense-urban, lower latency, and wider carrier bandwidth; and an SCS of 60kHz or higher supports bandwidths greater than 24.25GHz to overcome phase noise.
[0354] NR frequency bands can be defined as two types of frequency ranges (FR1 and FR2). The numerical values of the frequency ranges can be changed; for example, the two types of frequency ranges (FR1 and FR2) are shown in Table 5 below. For the sake of explanation, among the frequency ranges used in NR systems, FR1 can mean the "sub 6GHz range," and FR2 can mean the "above 6GHz range," and these can be called millimeter waves (mmW).
[0355] [Table 5]
[0356] As mentioned above, the numerical values of the frequency range of the NR system can be changed. For example, FR1 can include a bandwidth of 410 MHz to 7125 MHz, as shown in Table 6 below. That is, FR1 can include frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included within FR1 can include unlicensed bands. Unlicensed bands can be used for a variety of applications, for example, for vehicle communications (e.g., autonomous driving).
[0357] [Table 6]
[0358] The claims described herein can be combined in various ways. For example, the technical features of the method claims herein can be combined and implemented in an apparatus, and the technical features of the apparatus claims herein can be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the apparatus claims herein can be combined and implemented in an apparatus, and the technical features of the method claims and the technical features of the apparatus claims herein can be combined and implemented as a method.
[0359] [Claims when filing an international application] [Claim 1] A method for operating a terminal in a wireless communication system, It receives information used when setting the parameters of an uplink data channel that can be applied to a specific frequency band. Based on the above information, the repeated transmission of data through the uplink data channel is performed. A method characterized in that, in the repeated transmission described above, if the time resources set for the transmission of a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission of the specific uplink data channel is skipped. [Claim 2] Upon receiving a repetition type indicator that indicates the type of repeated transmission, Based on the aforementioned repeat type indicator, it is determined that it is one of the first repeat type and the second repeat type, and The method according to claim 1, characterized in that it performs repeated transmission of the uplink data channel based on the determined repeat type. [Claim 3] The first repeat type is a physical uplink shared channel (PUSCH) repeat type A, which has the same transmit start symbol and transmit symbol length in each slot and is configured to perform repeated transmission of the uplink data channel. The method according to claim 2, characterized in that the second repetition type is a PUSCH repetition type B configured to perform repeated transmissions of the uplink data channel in units of transmit symbol length. [Claim 4] The method according to claim 3, characterized in that, when repeatedly transmitting the uplink data channel in the second repeating type, if a slot boundary or an invalid symbol is included in the symbols of the transmitted symbol length, two actual repetition transmissions are performed with the slot boundary or the invalid symbol as the boundary. [Claim 5] The method according to claim 2, characterized in that, when repeatedly transmitting the uplink data channel in the first repeating type, if either the FD time resource or the HD time resource is included in a specific slot for transmitting the uplink data channel, the transmission of the uplink data channel is not performed in the specific slot. [Claim 6] The method according to claim 2, characterized in that, when repeatedly transmitting the uplink data channel in the second repeating type, the uplink data channel is repeatedly transmitted via different actual transmission resources based on the boundary between the FD time resource and the HD time resource. [Claim 7] The aforementioned FD time resource includes an SBFD symbol that enables the terminal to operate in SBFD (subband-wise full duplex), The method according to claim 1, characterized in that the HD time resource includes non-SBFD symbols. [Claim 8] The method according to claim 7, characterized in that the terminal can simultaneously perform downlink receiving and uplink transmitting operations on different frequency resources using the SBFD symbol. [Claim 9] The method according to claim 7, characterized in that the terminal can perform a downlink reception operation or an uplink transmission operation with the non-SBFD symbol. [Claim 10] The method according to claim 1, characterized in that the frequency resources set for the transmission of the specific uplink data channel include resources outside the uplink subband. [Claim 11] It is a terminal, At least one transceiver; At least one memory; and, The system comprises at least one memory and at least one processor operably coupled with the at least one transceiver; The at least one processor is It receives information used when setting the parameters of an uplink data channel that can be applied to a specific frequency band. Based on the above information, the repeated transmission of data through the uplink data channel is performed. A terminal characterized in that, in the repeated transmission described above, if the time resources set for the transmission of a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission of the specific uplink data channel is skipped. [Claim 12] It is a device, At least one memory; and, The system comprises at least one processor operably coupled to at least one memory; The at least one processor is It receives information used when setting the parameters of an uplink data channel that can be applied to a specific frequency band. Based on the above information, the repeated transmission of data through the uplink data channel is performed. The apparatus is characterized in that, in the repeated transmission described above, if the time resources set for the transmission of a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission of the specific uplink data channel is skipped. [Claim 13] A computer-readable medium (CRM) that can be read by at least one computer, It comprises instructions that are based on being executed by at least one processor, A step of receiving information used when setting parameters for an uplink data channel that can be applied to a specific frequency band; and, Based on the information, the step of repeatedly transmitting through the uplink data channel is performed; A CRM characterized in that, in the repeated transmission described above, if the time resources set for transmission on a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the transmission on the specific uplink data channel is skipped. [Claim 14] A method for operating a base station in a wireless communication system, The terminal receives information used to set the parameters of the uplink data channel that can be applied to a specific frequency band. Based on the aforementioned information, the uplink data channel is repeatedly received, A method characterized in that, in the repeated reception described above, if the time resources for receiving a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, reception of the specific uplink data channel is skipped. [Claim 15] It is a base station, At least one transceiver; At least one memory; and, The system comprises at least one memory and at least one processor operably coupled with the at least one transceiver; The at least one processor is The terminal receives information used to set the parameters of the uplink data channel that can be applied to a specific frequency band. Based on the aforementioned information, the uplink data channel is repeatedly received, A base station characterized in that, in the repeated reception described above, if the time resources for receiving a specific uplink data channel include both full-duplex (FD) time resources and half-duplex (HD) time resources, the reception of the specific uplink data channel is skipped.
Claims
1. It is a method, The step of receiving information related to the configuration of a physical uplink shared channel (PUSCH) parameter specific to the user equipment (UE); The UE then performs a repetitive PUSCH transmission based on the information; If the aforementioned UE is set with a subband full duplex (SBFD) symbol and scheduled for a PUSCH transmission occasion mapped to the aforementioned SBFD and non-SBFD symbols within the slot, A method characterized in that, based on the fact that the PUSCH transmission opportunity is a nominal repeat for PUSCH repeat type B, the nominal repeat is divided within the actual repeat near the boundary between the SBFD symbol and the non-SBFD symbol.
2. The method according to claim 1, wherein, based on the fact that the PUSCH transmission opportunity is scheduled for PUSCH repetition type A, the slot is not counted among the slots available for the PUSCH transmission with repetition.
3. The method according to claim 1, wherein, based on the first repetition of the repetitive PUSCH transmission being either an SBFD symbol or a non-SBFD symbol, the remaining repetitions are also either SBFD symbols or non-SBFD symbols.
4. The method according to claim 1, wherein, as indicated by the information above, all of each transmission of the repeated PUSCH transmission consists of either only SBFD symbols or only non-SBFD symbols.
5. If the UE is set with an SBFD symbol and scheduled for a specific PUSCH transmission opportunity mapped to the SBFD symbol and non-SBFD symbols in the slot, The method according to claim 1, wherein the UE does not perform a PUSCH transmission at the specific PUSCH transmission opportunity.
6. UE (user equipment), At least one transceiver, At least one memory, and The system comprises at least one transceiver and at least one processor operably coupled to at least one memory, The at least one memory stores instructions that cause the at least one processor to perform an action when executed by the at least one processor. The aforementioned operation is, Steps include receiving information related to the configuration of a UE-specific physical uplink shared channel (PUSCH) parameter; The step of performing a repeated PUSCH transmission based on the aforementioned information; If the aforementioned UE is set with a subband full duplex (SBFD) symbol and scheduled for a PUSCH transmission occasion mapped to the aforementioned SBFD and non-SBFD symbols within the slot, Based on the fact that the PUSCH transmission opportunity is a nominal repeat for PUSCH repeat type B, the nominal repeat is characterized in that it is divided within the actual repeat near the boundary between the SBFD symbol and the non-SBFD symbol.
7. The UE according to claim 6, wherein, based on the fact that the PUSCH transmission opportunity is scheduled for PUSCH repetition type A, the slot is not counted among the slots available for the PUSCH transmission with repetition.
8. The UE according to claim 6, wherein, based on the first repetition of the repetitive PUSCH transmission being either an SBFD symbol or a non-SBFD symbol, the remaining repetitions are also either SBFD symbols or non-SBFD symbols.
9. The UE according to claim 6, wherein each transmission of the repeated PUSCH transmission is either SBFD symbols only or non-SBFD symbols only, as indicated by the information above.
10. If the UE is set with an SBFD symbol and scheduled for a specific PUSCH transmission opportunity mapped to the SBFD symbol and non-SBFD symbols in the slot, The UE according to claim 6, wherein the UE does not perform a PUSCH transmission in the particular PUSCH transmission opportunity.
11. It is a method, The base station (BS) transmits information related to the configuration of the UE-specific physical uplink shared channel (PUSCH) parameters to the user equipment (UE); The BS includes the step of receiving a repetitive PUSCH transmission from the UE based on the information; If a PUSCH transmission opportunity is scheduled for the UE mapped to the SBFD and non-SBFD symbols in the slot, A method characterized in that, based on the fact that the PUSCH transmission opportunity is a nominal repeat for PUSCH repeat type B, the nominal repeat is divided within the actual repeat near the boundary between the SBFD symbol and the non-SBFD symbol.
12. The method according to claim 11, wherein, based on the fact that the PUSCH transmission opportunity is scheduled for PUSCH repetition type A, the slot is not counted among the slots available for the PUSCH transmission with repetition.
13. The method according to claim 11, wherein, based on the first repetition of the repetitive PUSCH transmission being either an SBFD symbol or a non-SBFD symbol, the remaining repetitions are also either SBFD symbols or non-SBFD symbols.
14. The method according to claim 11, wherein, as indicated by the information above, all of each transmission of the repeated PUSCH transmission consists of either only SBFD symbols or only non-SBFD symbols.
15. If the UE is set with the SBFD symbol and scheduled for a specific PUSCH transmission opportunity mapped to the SBFD symbol and non-SBFD symbols in the slot, The method according to claim 11, wherein the UE does not perform a PUSCH transmission in the particular PUSCH transmission opportunity.