Wireless communication method and user equipment for performing repetition-based uplink transmissions

Abstract

Provided are a wireless communication method and a user equipment (UE) for performing repetition-based uplink (UL) transmission, the wireless communication method including: receiving, from a base station (BS), a radio resource control (RRC) message including first information indicating a repetition type, second information indicating a plurality of transmission configuration indicator (TCI) states, and third information including a plurality of items, each configuring a physical uplink shared channel (PUSCH) resource allocation; receiving downlink control information (DCI) indicating one of the plurality of items; determining a set of nominal PUSCH repetitions; and transmitting at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions, wherein each nominal PUSCH repetition in the set of nominal PUSCH repetitions maps to one of a plurality of TCI states.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application was filed on July 27, 2020. Ta," U.S. Provisional Patent Application No. 63 / 057,229 entitled "METHOD AND APPARATUS FOR NON-SLOT BASED MULTIPLE TRP OPERATION" No. Claiming benefit and priority , the national phase of International Patent Application No. PCT / CN2021 / 108641, filed on July 27, 2021. It is something The above application of All Content is for all purposes this By reference As a result, Fully incorporated.

[0002] [Field] The present disclosure relates generally to wireless communications, and more particularly to a wireless communication method and user equipment (UE) for performing repetition-based uplink (UL) transmissions. [Background technology]

[0003] With the significant increase in the number of connected devices and the rapid increase in user / network traffic volume, various efforts have been made to improve various aspects of wireless communication systems for next generation wireless communication systems, such as Fifth Generation (5G) New Radio (NR), by improving data speeds, latency, reliability, and mobility.

[0004] The 5G NR system is designed to provide flexibility and configurability to optimize network services and types for a variety of use cases, such as enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Summary of the Invention [Problem to be solved by the invention]

[0005] However, as the demand for wireless access continues to increase, further improvements in wireless communications are needed for next generation wireless communication systems. [Means for solving the problem]

[0006] The present disclosure is directed to a wireless communication method and UE for performing repetition-based UL transmission.

[0007] According to a first aspect of the present disclosure, a wireless communication method performed by a UE is provided. The wireless communication method includes receiving a radio resource control (RRC) message from a base station (BS). The RRC message includes first information indicating a repetition type supporting two or more repeated transmissions in a slot, second information indicating a plurality of transmission configuration indicator (TCI) states configured for the UE, and third information including a plurality of items, each of which configures a physical uplink shared channel (PUSCH) resource allocation. The wireless communication method includes receiving downlink control information (DCI) indicating one of the plurality of items; determining a set of nominal PUSCH repetitions according to the one of the plurality of items, wherein a number of nominal PUSCH repetitions in the set of nominal PUSCH repetitions is indicated by a first parameter included in the one of the plurality of items; and transmitting at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions, wherein each nominal PUSCH repetition in the set of nominal PUSCH repetitions maps to one of a plurality of TCI states.

[0008] In some embodiments of the first aspect of the present disclosure, one of the plurality of items further includes a second parameter indicating a mapping type between the set of nominal PUSCH repetitions and the plurality of TCI states.

[0009] In some embodiments of the first aspect of the present disclosure, the mapping type is a cyclic mapping type or a continuous mapping type.

[0010] In some embodiments of the first aspect of the present disclosure, the wireless communication method further includes determining at least one actual PUSCH repetition by partitioning a set of nominal PUSCH repetitions across at least one slot boundary or across at least one symbol that is deemed invalid for uplink (UL) transmission, wherein the at least one actual PUSCH repetition includes a first actual PUSCH repetition and a second actual PUSCH repetition, the first actual PUSCH repetition and the second actual PUSCH repetition being partitioned from a same nominal PUSCH repetition in the set of nominal PUSCH repetitions, and the first actual PUSCH repetition and the second actual PUSCH repetition mapping to a same TCI state of the plurality of TCI states.

[0011] In some embodiments of the first aspect of the present disclosure, the third information corresponds to a time domain resource allocation (TDRA) list.

[0012] In some embodiments of the first aspect of the present disclosure, the UE is further configured from fourth information indicating a time-domain offset between two adjacent nominal PUSCH repetitions within the set of nominal PUSCH repetitions.

[0013] In some embodiments of the first aspect of the present disclosure, the time domain offset is configured by the BS on a per nominal PUSCH repetition basis.

[0014] In some embodiments of the first aspect of the present disclosure, every two adjacent nominal PUSCH repetitions in the set of nominal PUSCH repetitions have the same time-domain offset.

[0015] of the present disclosure Second According to an aspect, a UE is provided. The UE includes: At least one processor; and at least one memory coupled to the at least one processor. Including At least one memory The UE is configured to receive an RRC message from a BS, the RRC message including first information indicating a repetition type supporting two or more repeat transmissions in a slot, second information indicating a plurality of TCI states configured for the UE, and third information including a plurality of items, each of the plurality of items configuring a PUSCH resource allocation. The processing circuit receives a DCI indicating one of the plurality of items, determines a set of nominal PUSCH repetitions according to the one of the plurality of items, transmits at least one actual PUSCH repetition, a number of nominal PUSCH repetitions within the set of nominal PUSCH repetitions being indicated by a first parameter included in the one of the plurality of items and determined based on the set of nominal PUSCH repetitions, and each nominal PUSCH repetition within the set of nominal PUSCH repetitions maps to one of the plurality of TCI states. storing computer-executable instructions that, when executed by at least one processor, cause the UE to execute the It is further set as follows.

[0016] In some embodiments of the second aspect of the present disclosure, one of the plurality of items further includes a second parameter indicating a mapping type between the set of nominal PUSCH repetitions and the plurality of TCI states.

[0017] In some embodiments of the second aspect of the present disclosure, the mapping type is a cyclic mapping type or a continuous mapping type.

[0018] In some embodiments of the second aspect of the present disclosure, the computer-executable instructions are further configured to cause the UE to determine at least one actual PUSCH repetition by splitting the set of nominal PUSCH repetitions across at least one slot boundary or across at least one symbol that is deemed invalid for uplink (UL) transmission, the at least one actual PUSCH repetition including a first actual PUSCH repetition and a second actual PUSCH repetition, the first actual PUSCH repetition and the second actual PUSCH repetition being split from a same nominal PUSCH repetition in the set of nominal PUSCH repetitions, and the first actual PUSCH repetition and the second actual PUSCH repetition mapping to a same TCI state of the plurality of TCI states.

[0019] In some embodiments of the second aspect of the present disclosure, the third information corresponds to a time domain resource allocation (TDRA) list.

[0020] In some embodiments of the second aspect of the present disclosure, the UE is further configured from fourth information indicating a time-domain offset between two adjacent nominal PUSCH repetitions within the set of nominal PUSCH repetitions.

[0021] In some embodiments of the second aspect of the present disclosure, the time domain offset is configured by the BS on a per nominal PUSCH repetition basis.

[0022] In some embodiments of the second aspect of the present disclosure, every two adjacent nominal PUSCH repetitions in the set of nominal PUSCH repetitions have the same time-domain offset.

[0023] According to a third aspect of the present disclosure, a base station (BS) is provided, the BS including at least one processor and at least one memory coupled to the at least one processor, wherein the at least one memory is configured to transmit a radio resource control (RRC) message to a user equipment (UE), the RRC message including first information indicating a repetition type supporting two or more repeated transmissions in a slot, second information indicating a plurality of transmission configuration indicator (TCI) states configured for the UE, and third information including a plurality of items, each of the plurality of items configuring a physical uplink shared channel (PUSCH) resource allocation, the BS transmits downlink control information (DCI) indicating one of the plurality of items, the UE determines a set of nominal PUSCH repetitions according to one of the plurality of items, and a number of nominal PUSCH repetitions in the set of nominal PUSCH repetitions is indicated by a first parameter included in the one of the plurality of items, and receives from the UE at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions, and each nominal PUSCH repetition in the set of nominal PUSCH repetitions is indicated by a first parameter included in the one of the plurality of items. The method stores computer-executable instructions that, when executed by at least one processor, cause the BS to map PUSCH repetitions to one of a plurality of TCI states.

[0024] In some embodiments of the third aspect of the present disclosure, one of the plurality of items further includes a second parameter indicating a mapping type between the set of nominal PUSCH repetitions and the plurality of TCI states.

[0025] In some embodiments of the third aspect of the present disclosure, the mapping type is a cyclic mapping type or a continuous mapping type.

[0026] In some embodiments of the third aspect of the present disclosure, the at least one actual PUSCH repetition includes a first actual PUSCH repetition and a second actual PUSCH repetition, where the first actual PUSCH repetition and the second actual PUSCH repetition are split from a same nominal PUSCH repetition in a set of nominal PUSCH repetitions, and the first actual PUSCH repetition and the second actual PUSCH repetition map to a same TCI state of the plurality of TCI states.

[0027] In some embodiments of the third aspect of the present disclosure, the third information corresponds to a time domain resource allocation (TDRA) list.

[0028] In some embodiments of the third aspect of the present disclosure, the computer-executable instructions, when executed by the at least one processor, further cause the BS to configure the UE with fourth information indicating a time-domain offset between two adjacent nominal PUSCH repetitions within the set of nominal PUSCH repetitions.

[0029] In some embodiments of the third aspect of the present disclosure, the computer-executable instructions, when executed by the at least one processor, further cause the BS to configure the UE with a time-domain offset on a per nominal PUSCH repetition basis.

[0030] In some embodiments of the third aspect of the present disclosure, two adjacent nominal PUSCH repetitions in a set of nominal PUSCH repetitions have the same time-domain offset. [Brief explanation of the drawings]

[0031] Aspects of the present embodiment will be best understood from the following detailed description when read in conjunction with the accompanying drawings, in which: Various features are not drawn to scale, and dimensions of various features may be arbitrarily increased or decreased for clarity of discussion. [Figure 1] FIG. 1 is a diagram illustrating different offset values ​​set for different repetition schemes according to an example embodiment of the present disclosure. [Figure 2] FIG. 2 is a diagram illustrating various offset values ​​configured for a non-slot-based repetition scheme, according to an example embodiment of the present disclosure. [Figure 3] FIG. 3 is a diagram illustrating a non-slot-based repetition scheme in which a fixed offset value is applied, according to an example embodiment of the present disclosure. [Figure 4] FIG. 4 is a diagram illustrating that various iteration schemes share a common parameter indicating the number of iterations, according to an example embodiment of the present disclosure. [Figure 5] FIG. 5 is a diagram illustrating that various iteration schemes apply distinct parameters, each indicating a corresponding number of iterations, according to an example embodiment of the present disclosure. [Figure 6] FIG. 6 is a diagram illustrating multiple repetitions mapped to TCI states based on different types of TCI state mapping orders according to an example embodiment of the present disclosure. [Figure 7] FIG. 7 is a diagram illustrating multiple repetitions mapped to TCI states based on a TCI state mapping order, regardless of the repetition scheme, according to an example embodiment of the present disclosure. [Figure 8] FIG. 8 is a diagram illustrating multiple nominal iterations, each mapped to a TCI state, according to an example embodiment of the present disclosure. [Figure 9] FIG. 9 is a diagram illustrating multiple actual repetitions, each mapped to a TCI state, according to an example embodiment of the present disclosure. [Figure 10] FIG. 10 illustrates a process for changing the mapping criteria of TCI states from a nominal repetition criteria to an actual repetition criteria according to an example embodiment of the present disclosure. [Figure 11] FIG. 11 is a diagram illustrating a TCI mapping order for multiple consecutive iterations according to an example embodiment of the present disclosure. [Figure 12] FIG. 12 is a diagram illustrating a TCI mapping order for multiple consecutive iterations according to another example embodiment of the present disclosure. [Figure 13] FIG. 13 is a diagram illustrating a time domain offset distribution pattern among multiple iterations according to an example embodiment of the present disclosure. [Figure 14] FIG. 14 is a diagram illustrating a time domain offset distribution pattern among multiple iterations according to an example embodiment of the present disclosure. [Figure 15] FIG. 15 is a flowchart illustrating a wireless communication method performed by a UE to perform repetition-based UL transmissions, according to one embodiment of the present disclosure. [Figure 16] FIG. 16 is a block diagram illustrating a node for wireless communication according to one embodiment of the disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0032] The following contains specific information related to embodiments of the present disclosure. The drawings and their accompanying detailed description are directed to embodiments only. However, the present disclosure is not limited to these embodiments. Other variations and embodiments of the present disclosure will be apparent to those skilled in the art.

[0033] Unless otherwise noted, like or corresponding elements between the drawings may be indicated by like or corresponding reference numerals. Further, the drawings and illustrations in this disclosure are generally not to scale and are not intended to correspond to actual relative dimensions.

[0034] Consistency gender For ease of illustration and understanding, similar features may be identified by the same numbers in the figures (in some instances not shown). However, features in different embodiments may differ in other respects and are not intended to be narrowly limited to those shown in the figures.

[0035] 「 The phrase "in some embodiments" ,same "A" may refer to one or more of the same or different embodiments. The term "coupled" is defined as directly or indirectly connected through intervening components, and is not necessarily limited to a physical connection. The term "comprising" means "including" and indicates an open-ended inclusion or membership in a disclosed combination, series, group, or equivalent, but is not necessarily limited to such. The phrase "at least one of A, B, and C" or "at least one of: A, B, and C" means "A only, or B only, or C only, or any combination of A, B, and C."

[0036] The terms "system" and "network" may be used interchangeably. The term "and / or" is only an association relationship to disclose associated objects and indicates that a three-way relationship may exist, such as A and / or B may indicate that A exists alone, that A and B exist simultaneously, or that B exists alone. "A and / or B and / or C" may indicate that at least one of A, B, and C is present. The character " / " generally indicates that associated objects are in an "or" relationship.

[0037] For purposes of explanation and not limitation, specific details of functional entities, techniques, protocols, standards, etc. are set forth to provide an understanding of the disclosed technology. In other instances, detailed descriptions of well-known methods, techniques, systems, architectures, etc. are omitted so as not to obscure the present disclosure with unnecessary detail.

[0038] Those skilled in the art will readily recognize that any disclosed network function or algorithm may be implemented by hardware, software, or a combination of software and hardware. The disclosed functions may correspond to modules that may be software, hardware, firmware, or any combination thereof.

[0039] Software embodiments may include computer-executable instructions stored on a computer-readable medium, such as a memory or other type of storage device. One or more microprocessors or general-purpose computers having communications processing capabilities can be programmed with the corresponding computer-executable instructions to perform the disclosed network functions or algorithms.

[0040] A microprocessor or general-purpose computer may include the use of an application-specific integrated circuit (ASIC), a programmable logic array, and / or one or more digital signal processors (DSPs). Some of the disclosed embodiments are directed to software installed and executed on computer hardware, but may also be implemented as firmware. , Ha Alternate embodiments implemented as hardware or a combination of hardware and software are well within the scope of this disclosure. The computer-readable medium may include, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, compact disc read-only memory (CD-ROM), magnetic cassette, magnetic tape, magnetic disk storage, or any other equivalent medium capable of storing computer-readable instructions.

[0041] A wireless communication network architecture, such as a Long Term Evolution (LTE) system, an LTE-Advanced (LTE-A) system, an LTE-Advanced Pro system, or a 5G NR Radio Access Network (RAN), may generally include at least one base station (BS), at least one UE, and one or more optional network elements that provide connectivity within the network. The UE may communicate with a network, such as a Core Network (CN), an Evolved Packet Core (EPC) network, an Evolved Universal Terrestrial RAN (E-UTRAN), Next Generation Core (NGC), 5G Core (5GC), or the Internet, via the RAN established by one or more BSs.

[0042] A UE may include, but is not limited to, a mobile station, a mobile terminal or device, or a user communication wireless terminal. A UE may be a mobile wireless device, including, but not limited to, a mobile phone, a tablet, a wearable device, a sensor, a vehicle, or a personal digital assistant (PDA) with wireless communication capabilities. A UE may be configured to receive and transmit signals over the air interface to one or more cells in the RAN.

[0043] The BS may be configured to provide communication services according to at least one radio access technology (RAT), such as Worldwide Interoperability for Microwave Access (WiMAX), Global System for Mobile Communications (GSM), often referred to as 2G, GSM Enhanced Data Rates for GSM Evolution (EDGE) RAN (GERAN), General Packet Radio Service (GPRS), Universal Mobile Telecommunications System (UMTS), often referred to as 3G based on basic wideband code division multiple access (W-CDMA), High Speed ​​Packet Access (HSPA), LTE, LTE-A, evolved / enhanced LTE (eLTE) connected to 5GC, NR (often referred to as 5G), and / or LTE-A Pro. However, the scope of this disclosure is not limited to these protocols.

[0044] A BS may include, but is not limited to, a Node B (NB) in UMTS, an evolved Node B (eNB) in LTE or LTE-A, a Radio Network Controller (RNC) in UMTS, a BS Controller (BSC) in GSM / GERAN, a Next Generation eNB (ng-eNB) in an evolved universal terrestrial radio access (E-UTRA) BS associated with 5GC, a Next Generation Node B (gNB) in a 5G-RAN (or in a 5G access network (5G-AN)), or any other device capable of controlling radio communications and managing radio resources within a cell. A BS may serve one or more UEs over an air interface.

[0045] A BS may provide radio coverage for a particular geographic area using multiple cells included in the RAN. The BS may support the operation of cells. Each cell may be operable to serve at least one UE within its radio coverage.

[0046] Each cell (often referred to as a serving cell) may provide services to one or more UEs within its radio coverage, such that each cell schedules downlink (DL) and optionally uplink (UL) resources to at least one UE within its radio coverage for DL ​​and optionally UL packet transmissions. A BS may communicate with one or more UEs in a wireless communication system via multiple cells.

[0047] A cell can allocate sidelink (SL) resources to support proximity services (ProSe), LTE SL services, and / or LTE / NR Vehicle-to-Everything (V2X) services. Each cell may have a coverage area that overlaps with other cells.

[0048] It should be noted that although the mechanisms described above and below are mostly described with respect to PUSCH transmission, the described mechanisms may be applicable to other types of channels, such as Physical Downlink Shared Channel (PDSCH) scheduling. On the other hand, the TCI state may refer to information about the UL beam / panel.

[0049] NR supports DL transmission of the same (NR-)PDSCH data stream from multiple transmit / receive points (TRPs) with at least ideal backhaul, and different NR-PDSCH data streams from multiple TRPs with ideal and non-ideal backhaul. Ideal The backhaul allows for scheduling data transmissions from multiple TRPs using a single physical downlink control channel (PDCCH) from one TRP, but not from other TRPs. IdealThe backhaul may require multiple PDCCHs, with each TRP having one PDCCH, to schedule corresponding data transmissions. In the 3GPP NR specification Release 15 (Rel-15), a scalable and flexible multiple-input multiple-output (MIMO) framework is used. For example, beam management operations and flexible channel state information (CSI) acquisition are supported. In the NR Rel-16 work item, to achieve the goals of increased robustness, lower overhead, and lower latency, ideal and Non-ideal Enhancements on multi-user MIMO (MU-MIMO) support including improved reliability and robustness with both backhaul, multi-TRP / panel transmission, and multi-beam operation primarily targeting Frequency Range 2 (FR2) operation will be implemented.

[0050] The UE may be configured with up to M (e.g., 64 or 128) TCI state configurations, each of which may include one or two downlink reference signals, a DM-RS port for the PDSCH, a DM-RS port for the PDCCH, and a TCI state for the PDCCH. Demodulation reference signal ( DM-RS ) port, or CSI reference signal ( CSI-RS ) It includes parameters for configuring at least one Quasi-Collocation (QCL) relationship between the CSI-RS ports of the resource. The QCL type corresponding to each DL RS can be given by the higher layer parameter qcl-Type in the parameter QCL-Info. There are four QCL types: 'QCL-TypeA': {Doppler shift, Doppler spread, mean delay, delay spread}, 'QCL-TypeB': {Doppler shift, Doppler spread}, 'QCL-TypeC':{Doppler shift, average delay}, 'QCL-TypeD':{Spatial Rx parameters}.

[0051] When signals transmitted from different antenna ports experience wireless channels with common characteristics, the transmitted signals are considered to be quasi-collocated (QCLed) with each other. For example, if two signals / channels are quasi-collocated with each other via QCL-Type A, it means that the two signals / channels pass through similar wireless channels that share similar characteristics in terms of Doppler shift, Doppler spread, average delay, and delay spread. If two signals / channels are quasi-collocated with each other via QCL-Type B, the two signals / channels experience similar characteristics in terms of Doppler shift, Doppler spread, average delay, and delay spread. and This means that two signals / channels experience similar wireless channels that share similar characteristics in terms of Doppler spread. When two signals / channels are quasi-colocated with each other via QCL-TypeC, this means that the two signals / channels experience similar wireless channels that share similar characteristics in terms of Doppler shift and average delay. When two signals / channels are quasi-colocated with each other via QCL-TypeD, this means that the two signals / channels experience similar wireless channels that share similar characteristics in terms of spatial receive (Rx) parameters. The QCL concept is used to help UEs perform channel estimation, frequency offset error estimation, and synchronization procedures.

[0052] In NR Rel-16, multi-TRP deployment for URLLC scenarios shows how multiple TRPs improve reliability by duplicating transmissions. One reason for the improved reliability is that if one TRP is blocked, the UE can still receive signals from another TRP. Furthermore, up to two panels / TRPs can be used for simultaneous multi-panel / TRP reception. Some multi-TRP-related schemes that can be scheduled by a single DCI for URLLC are described below.

[0053] Scheme 1 (Spatial Division Multiplexing (SDM)): n TCI states are applied within a single timeslot, with overlapping time and frequency resource allocations for PDSCH transmission, where n is a positive integer.

[0054] Scheme 2a (Frequency Division Multiplexing (FDM)): n TCI states are applied within a single time slot and have non-overlapping frequency resource allocations for PDSCH transmission. In Scheme 2a, each non-overlapping frequency resource allocation may be associated with one TCI state. The same single / multiple DMRS ports may be associated with all non-overlapping frequency resource allocations. A single codeword with one redundancy version (RV) may be used across all resource allocations. From the UE's perspective, a common resource block (RB) mapping may be applied across all resource allocations.

[0055] Scheme 2b (FDM): n TCI states are applied within a single slot and have non-overlapping frequency resource allocations. Each non-overlapping frequency resource allocation may be associated with one TCI state. The same single / multiple DMRS ports may be associated with all non-overlapping frequency resource allocations. A single codeword with one RV may be used for each non-overlapping frequency resource allocation. The RVs corresponding to each non-overlapping frequency resource allocation may be the same or different.

[0056] Scheme 3 (TDM Scheme A): n TCI states are applied within a single slot and have non-overlapping time resource allocations. Each transmission opportunity in a transport block (TB) may have one TCI and one RV with a time granularity of minislot. All transmission opportunities within a slot may use a common modulation and coding scheme (MCS) with the same single or multiple DMRS ports. The RV / TCI states may be the same or different between transmission opportunities.

[0057] Scheme 4 (TDM Scheme B): n TCI states applied to K (n≦K) different slots. Each transmission opportunity in TB has one TCI and one RV. All transmission opportunities across the K slots may use a common MCS with the same single or multiple DMRS ports. The RV / TCI states may be the same or different between transmission opportunities.

[0058] The slot-based repetition scheme refers to a scheme in which each repetition is performed according to the slot structure, while the non-slot-based repetition scheme can refer to a scheme in which repetition is performed regardless of the slot structure. In other words, the non-slot-based repetition scheme refers to a scheme in which two or more repetitions are performed within a single time slot. Possible It allows for a repetition scheme based on slots, but does not implement it.

[0059] A non-slot-based repetition scheme may also be referred to as "repetition type B." For repetition type B, the nominal repetitions are consecutive in that each subsequent nominal repetition begins at the first symbol or offset value after the last symbol of the previous nominal repetition. Based on repetition type B, it is possible that the nominal repetitions may cross slot boundaries. The number of nominal repetitions may be given by RRC signaling, and the actual number of repetitions may be determined by the RRC signaling and the number of slot boundaries or / and UL / DL switches within a slot. Thus, in some cases, the actual number of repetitions may be greater than the number of nominal repetitions.

[0060] Note that a "nominal repetition" is a repetition for which the UE receives an UL grant, while an "actual repetition" is a segment of the nominal repetition that is actually transmitted by the UE. For example, in the case of a nominal repetition that spans a slot boundary, the nominal repetition may be divided into two actual repetitions by the slot boundary from the UE's perspective. For example, in the case of a nominal repetition that spans an invalid symbol for transmission (e.g., a DL symbol, where the nominal repetition is a UL repetition such as a PUSCH repetition), the nominal repetition may also be divided into two actual repetitions by the invalid symbol from the UE's perspective. A nominal / actual repetition may refer to a nominal / actual PUSCH repetition. In this disclosure, a repetition may refer to either a "nominal repetition" or an "actual repetition" unless otherwise specified. Furthermore, a repetition may be an UL-based repetition or a DL-based repetition. For example, a repetition may be a PUSCH repetition. In this disclosure, a repetition may refer to a transmission opportunity for a nominal repetition or an actual repetition.

[0061] The mechanism of PUSCH repetition in a multi-TRP scenario may be implemented based on a dedicated configuration (e.g., RepetitionSchemeConfig) or may follow the PUSCH configuration for a non-slot-based repetition scheme. In some embodiments, the configuration / signal that applies to the mechanism of PDSCH repetition may also be applicable to the mechanism of PUSCH repetition for multi-TRP operation.

[0062] When the TCI state mapping methodology applied to multi-TRP-based PDSCH repetition is applied to multi-TRP-based PUSCH repetition, it is necessary to map each transmission opportunity of the UL TB (e.g., TCI cycle) to a TCI state because the number of actual repetitions may differ from the number of nominal repetitions (depending on whether the nominal repetition spans a slot boundary or spans an invalid symbol). In the case of Scheme 3 for PDSCH repetition described previously, the UE may not be expected to receive repetitions that span a slot boundary. Therefore, when a nominal repetition splits into two actual repetitions, it is necessary to determine a mapping pattern of TCI states indicated by TCI codepoints for PUSCH repetitions. The mapping pattern may refer to a mapping order of TCI states, which may be implemented by mapping one or more TCI states to PUSCH repetition transmissions.

[0063] On the other hand, for multi-TRP PDSCH repetition operation, the parameter startingsymboloffsetK may be used to set the starting symbol of the second transmission opportunity to be K symbols after the last symbol of the first transmission opportunity in the slot. In other words, the parameter startingsymboloffsetK determines the offset (e.g., K symbols) between the last symbol of the first transmission opportunity and the starting symbol of the second transmission opportunity in the slot. However, for PUSCH repetition, the offset between any two adjacent repetitions may not be the same. Therefore, a mechanism suitable for transmitting PUSCH repetitions under conditions of uneven offset distribution may be needed.

[0064] Furthermore, in an NR system, simultaneous configuration of scheme 3 (e.g., TDM scheme A) and scheme 4 (TDM scheme B) in multi-TRP PDSCH repetition operation may not be permitted. However, to enable more flexible and reliable PUSCH transmission, it is required to allow a UE to be configured from non-slot-based repetition schemes and slot-based repetition schemes at the same time.

[0065] As mentioned above, the present disclosure provides a mechanism for UL-based repetition (e.g., PUSCH repetition) that is more flexible and better suits the requirements of specific 5G scenarios (e.g., multi-TRP).

[0066] [Special setting for multi-TRP PUSCH repetition] In some embodiments, the UE may be provided with a dedicated configuration for PUSCH repetition, including parameters for configuring a slot-based repetition scheme (or "slot-based parameters" for short) and parameters for configuring a non-slot-based repetition scheme (or "non-slot-based parameters" for short). In other words, when the UE receives the dedicated configuration, the UE is configured from two different repetition schemes: the slot-based repetition scheme and the non-slot-based repetition scheme. In some embodiments, the slot-based parameters and / or the non-slot-based parameters may be implemented as information elements (IEs).

[0067] The dedicated configuration including slot-based and non-slot-based parameters may be considered as an explicit indication from the network to configure the UE with slot-based and non-slot-based repetition schemes. In some embodiments, the slot-based parameters may include parameters RepTypeA or SlotBased, while the non-slot-based parameters may include parameters RepTypeB or NonslotBased.

[0068] In some other embodiments, one or more particular parameters may be used as an implicit indication to configure the UE with a corresponding repetition scheme. The parameters may correspond to different repetition schemes. For example, a first set of parameters may correspond to a slot-based repetition scheme and a second set of parameters may correspond to a non-slot-based repetition scheme.

[0069] In some other embodiments, different repetition schemes may have different numbers of nominal repetitions, for example, a UE may be configured with a parameter RepNumTypeA indicating the number of nominal repetitions for a slot-based repetition scheme and / or a parameter RepNumTypeB indicating the number of nominal repetitions for a non-slot-based repetition scheme.

[0070] In some implementations, different repetition schemes may have different TCI state mapping orders. For example, a UE may be configured with a parameter TCImappingTypeA indicating a TCI state mapping order for a slot-based repetition scheme and / or a parameter TCImappingTypeB indicating a TCI state mapping order for a non-slot-based repetition scheme.

[0071] In some embodiments, different repetition schemes may correspond to different time domain resource allocation (TDRA) lists. For example, a UE may be configured with a first TDRA list for a slot-based repetition scheme and a second TDRA list for a non-slot-based repetition scheme. A TDRA list may include several items (or "entries" or "rows"), each of which indicates a set of resource allocation-related parameters including at least one of an item index, a mapping type, a slot offset (K1 and / or K2), a starting symbol (S), an allocation length (L), and a nominal number of repetitions.

[0072] In some embodiments, the UE may send a capability message to the network. The capability message may indicate the UE's ability to support switching between different repetition schemes.

[0073] [Offset value between each repetition] In some aspects of the present disclosure, the UE may be configured with several parameters that indicate an offset value between every two adjacent repetitions, a mapping order of TCI states, and the number of nominal repetitions.

[0074] In some embodiments, different offset values ​​indicated by the parameters may be in different time units, for example, one time unit of the offset value may be in symbols, while another time unit of the offset value may be in slots or subslots.

[0075] FIG. 1 illustrates different offset values ​​set for different repetition schemes according to an example embodiment of the present disclosure. Figure is.

[0076] In this embodiment, the UE applies a non-slot-based repetition scheme and a slot-based repetition scheme in different time slots. As shown in FIG. 1, the non-slot-based repetition scheme is applied in slots #1 and #4, and the slot-based repetition scheme is applied in slots #2 and #3. In slot #1, repetitions 102 and 104 are consecutive (or contiguous) in that the last symbol of repetition 102 is followed by the first symbol of repetition 104. In other words, the offset value OV1 between two adjacent repetitions 102 and 104 is "0." Following repetition 104, repetitions 106 and 108 are transmitted in slots #2 and #3 based on the slot-based repetition scheme. The offset value between two adjacent repetitions under different repetition schemes is OV2, which is set to "7" symbols in the exemplary embodiment.

[0077] Then, as previously explained, different repetition schemes may apply different offset values ​​to two adjacent repetitions. As shown in FIG. 1, in slots #2 and #3, the repetition scheme switches from "non-slot-based" to "slot-based," so a new offset value OV3 (e.g., 7 symbols) is applied. During the transition from slot #3 to slot #4, the repetition scheme reverts to non-slot-based repetition, and therefore the offset value between repetitions 108 and 110 is OV2, which is "7" symbols in the example embodiment. In slot #4, repetitions 110 and 112 are consecutive in that the first symbol of repetition 112 is immediately after the last symbol of repetition 110. That is, the offset value between repetitions 110 and 112 is OV1, which is "0" symbols in the example embodiment.

[0078] In some embodiments, the UE may set a parameter (e.g., startingSymbolOffsetK1) indicating an offset value between two adjacent repeats (e.g., OV1 in FIG. 1) for a non-slot-based repetition scheme, a parameter (e.g., startingSymbolOffsetK2) indicating an offset value between two adjacent repeats (e.g., OV2 in FIG. 1) for a different repetition scheme, and / or a parameter (e.g., startingSymbolOffsetK3) indicating an offset value between two adjacent repeats (e.g., OV3 in FIG. 1) for a slot-based repetition scheme. Using It can be set.

[0079] In some embodiments, the offset value between each two adjacent repeats for a slot-based repeating scheme may be a "fixed value." That is, the offset value set for a slot-based repeating scheme may be the same. In some other embodiments, the offset value between each two adjacent repeats for a non-slot-based repeating scheme may be a "variable value."

[0080] FIG. 2 illustrates various offset values ​​configured for a non-slot-based repetition scheme according to an example embodiment of the present disclosure. Figure 2, the offset value OV4 between repetition 202 and repetition 204 in slot #1 is '2' symbols. In slot #2, the offset value OV5 between repetitions 206 and 208 changes to '0' symbols. The same pattern of offset distribution as applied to slots #1 and #2 may also be applied to the next two slots #3 and #4. For example, in slot #3, an offset value OV4 may be applied between repetition 210 and repetition 212. In slot #4, an offset value OV5 may be applied between repetitions 214 and 216. In other words, in some embodiments, the offset value between each two adjacent repetitions for a non-slot-based repetition scheme may differ on a slot-by-slot basis.

[0081] FIG. 3 illustrates a non-slot-based repetition scheme in which a fixed offset value is applied, according to an example embodiment of the present disclosure. Figure 3, the offset value OV6 between two adjacent repetitions in a slot (e.g., repetitions 302 and 304 in slot #1, repetitions 306 and 308 in slot #2, repetitions 310 and 312 in slot #3, or repetitions 314 and 316 in slot #4) is fixed (e.g., '2' symbols).

[0082] It should be noted that the values ​​of OV1, OV2, OV3, OV4, OV5, and OV6 described above, as well as other offset values ​​described in this disclosure, are for illustrative purposes only and do not limit the scope of this disclosure. The offset value may be arbitrary depending on the network configuration or the UE embodiment. In some embodiments, the offset value may be a fixed value when a particular repetition scheme (e.g., a non-slot-based repetition scheme or a slot-based repetition scheme) is applied. In some embodiments, the offset value may be changed when a particular repetition scheme (e.g., a non-slot-based repetition scheme or a slot-based repetition scheme) is applied. The offset value may be set by radio resource control (RRC), downlink control information (DCI), and / or medium access control (MAC) control element (CE) signaling.

[0083] [Number of repetitions] In some aspects of the present disclosure, various methods for configuring a UE with the number of repetitions for different repetition schemes are provided, the details of which are described with reference to FIGS.

[0084] FIG. 4 illustrates that various iteration schemes share a common parameter indicating the number of iterations, according to an example embodiment of the present disclosure. Figure In this embodiment, the parameter RepNum is common to both the slot-based repetition scheme and the non-slot-based repetition scheme. For example, if RepNum=2, the repetition number of the slot-based repetition scheme and the repetition number of the non-slot-based repetition scheme may be the same value "2". In this case, the UE can know that there should be two repetitions in one slot (represented by a rectangle with a diagonal line), and such a slot-based repetition pattern should be implemented in two consecutive slots (e.g., slots #1 and #2). The parameter RepNum may be indicated / set by RRC, MAC-CE, and / or DCI signaling.

[0085] FIG. 5 illustrates that various iteration schemes apply distinct parameters, each indicating a corresponding number of iterations, according to an example embodiment of the present disclosure. Figure In this embodiment, the number of repetitions in the slot-based repetition scheme is determined by the parameter RepNumTypeA, and the number of repetitions in the non-slot-based repetition scheme is determined by the parameter RepNumTypeB. If RepNumTypeA=4 and RepNumTypeB=2, the UE can know that there should be two repetitions in one slot (represented by a rectangle with a diagonal line, respectively), and such a slot-based repetition pattern should be implemented in four consecutive slots (e.g., slots #1, #2, #3, and #4). Each of the parameters RepNumTypeA and RepNumTypeB can be indicated / set by RRC, MAC-CE, and / or DCI signaling. For example, the parameters RepNumTypeA and RepNumTypeB can be implemented in two separate RRC parameters, two separate MAC-CE, or two separate DCI fields.

[0086] In some other embodiments, the number of repetitions may be determined by (1) the number of TCI states configured for TB and (2) the above-mentioned parameters RepNumTypeA and / or RepNumTypeB. For example, if the number of TCI states configured for TB is 2 (e.g., TCI State #1 and TCI State #2) and the indicator (e.g., RepNumTypeA or RepNumTypeB) is equal to 4, then the total number of repetitions is equal to 8 and may be determined by multiplying 2 by 4.

[0087] [TCI state mapping order] In some aspects of the present disclosure, a UE may be configured with a parameter indicating a mapping order of repeating TCI states for a particular repetition scheme. For example, a UE may be configured with parameter #1 for a slot-based repetition scheme and parameter #2 for a non-slot-based repetition scheme. When the slot-based repetition scheme is applied, the UE may apply the mapping order of the TCI states indicated by parameter #1. When the non-slot-based repetition scheme is applied, the UE may apply the mapping order of the TCI states indicated by parameter #2.

[0088] There are many types of TCI state mapping orders, including a continuous mapping type and a cyclic mapping type. The continuous mapping type can refer to a TCI state mapping order in which a specific set of consecutive repetitions can apply the same TCI state, a TCI state mapping order in which the next set of consecutive repetitions can apply a different TCI state, etc. In other words, for a continuous mapping type, a specific number of consecutive repetitions can apply the same TCI state. The cyclic mapping type can refer to a TCI state mapping order in which a specific TCI state mapping pattern of repetitions occurs within a cycle. Note that if the offset value between two consecutive / adjacent repetitions is "0," these two consecutive repetitions are considered "continuous" in the time domain.

[0089] FIG. 6 illustrates multiple repetitions mapped to TCI states based on a mapping order of different types of TCI states according to an example embodiment of the present disclosure. FigureIn this embodiment, the mapping order of the TCI states for the slot-based repetition scheme is a sequential mapping type, and the mapping order of the TCI states for the non-slot-based repetition scheme is a cyclic mapping type. As shown in FIG. 6, the non-slot-based repetition scheme is applied in slot #1, and the slot-based repetition scheme is applied in slots #2, #3, and #4. In slot #1, the TCI state mapping pattern for repetitions 602 and 604 is {TCI state #1, TCI state #2}. In slots #2, #3, and #4, the mapping order of the TCI states is switched to a sequential mapping type, in which the same TCI state can be applied every certain number of consecutive repetitions. For example, if the specific number of consecutive repetitions in which the same TCI state should be applied is "2," the mapping order of the TCI states can follow a sequential set of TCI states: {TCI state #1, TCI state #1, TCI state #2, TCI state #2}. In such a case, repetitions 606, 608, and 610 for the slot-based repetition scheme may be mapped to the first three TCI states of a consecutive set, i.e., repetitions 606, 608, and 610 may map to TCI state #1, TCI state #1, and TCI state #2, respectively, as shown in Figure 6. In some other embodiments, the slot-based repetition scheme and the non-slot-based repetition scheme may have the same TCI state mapping order (e.g., with a consecutive mapping type or a cyclic mapping type).

[0090] In some embodiments, the mapping order of different types of TCI states may be configured for the UE by RRC signaling, and the network may then indicate to the UE which type of TCI state mapping order should be applied by sending DCI or MAC-CE signaling.

[0091] In some embodiments, the TCI state mapping order parameter may be an index that can be set to one of several possible values, each corresponding to a mapping order for a particular type of TCI state. For example, the index may be set to "index 0" for a cyclic mapping type, "index 1" for a continuous mapping type, or "index 2" for a predefined mapping type. Once the parameter is set, the value of such index to be applied may be indicated by the network via DCI and / or MAC-CE signaling.

[0092] In some embodiments, the above-mentioned predefined mapping types may refer to a mapping order of TCI states other than the sequential and cyclic mapping types. Such a mapping order of TCI states may have a regular or irregular order. For example, the mapping order of TCI states may follow a predefined sequential set of TCI states such as {TCI state #1, TCI state #2, TCI state #2, TCI state #1}.

[0093] In some embodiments, when parameters for different repetition schemes (e.g., parameters #1 and #2 described above) are configured, a dynamic indication (e.g., carried by DCI or MAC-CE signaling) may be used to indicate which mapping order (e.g., mapping order for slot-based scheme and mapping order for non-slot-based scheme) the UE applies to scheduling of repetition-based transmissions (e.g., PUSCH repetitions). In some embodiments, scheduling may refer to scheduling for repetition operation.

[0094] FIG. 7 illustrates multiple repetitions mapped to TCI states based on the mapping order of the TCI states, regardless of the repetition scheme, according to an example embodiment of the present disclosure. FigureAs shown in Figure 7, even if slots #1 and #2 apply a non-slot-based repetition scheme and slots #3 and #4 apply a slot-based repetition scheme, repetitions 702, 704, 706, 708, 710, and 712 within these slots apply the same TCI state mapping order (e.g., using a cyclic TCI state mapping pattern of {TCI state #1, TCI state #2}) regardless of which repetition scheme is applied within the slot. In other words, the indicated TCI state mapping order may be applied to scheduling of repetition operations. A UE may include different repetition schemes (e.g., a non-slot-based repetition scheme and a slot-based repetition scheme) but may not apply different TCI state mapping patterns to the different repetition schemes.

[0095] In some embodiments, the UE may perform multi-TRP based PUSCH repetition based on a given indicator corresponding to Type A PUSCH repetition (or slot-based repetition scheme) and Type B PUSCH repetition (or non-slot-based repetition scheme).

[0096] In some embodiments, the mapping order of the TCI states may be set / indicated / activated on a per nominal iteration basis, in other words, each nominal iteration may be mapped to a TCI state.

[0097] FIG. 8 illustrates multiple nominal repeats according to an example embodiment of the present disclosure. Figure As shown in FIG. 8, nominal iterations 802, 804, 806, and 808 are TCI state #1, TCI state #2, TCI state #1, and and In other words, the type of the mapping order of the TCI states of the nominal repetitions 802, 804, 806, and 808 is a cyclic mapping type in this embodiment, where the cyclic TCI state mapping pattern is {TCI state #1, TCI state #2}.

[0098] Furthermore, because a TCI state is set for each nominal repetition, all actual repetitions of a nominal repetition can be mapped to the same TCI state, even if a nominal repetition or invalid symbol that crosses a slot boundary is split into more than one actual repetition. As shown in Figure 8, nominal repetition 806 maps to only one TCI state #1, even though it crosses a slot boundary and is considered to have two actual repetitions from the UE's perspective.

[0099] 8 is for illustrative purposes only. In some other embodiments, the type of mapping order of the TCI states may also be a sequential mapping type or any other predefined mapping type.

[0100] In some embodiments, the mapping order of the TCI states may be configured by the RRC (e.g., by an RRC parameter or an item in a TDRA list / table). In some embodiments, the mapping order of the TCI states may be indicated by a DCI (e.g., a new DCI field or an existing field indicating a new entry / item configured by the RRC). In some embodiments, the mapping order of the TCI states may be activated by the MAC-CE. For example, the MAC-CE may activate the mapping order of a particular TCI state by a field or a bitmap.

[0101] In some embodiments, the mapping order of the TCI states may be set / indicated / activated on a per actual repetition basis, in other words, each actual repetition may be mapped to a TCI state.

[0102] FIG. 9 illustrates several actual iterations according to an example embodiment of the present disclosure. Figure9, actual iterations 902, 904, 906, 908, and 910 are mapped to TCI state #1, TCI state #2, TCI state #1, TCI state #2, and TCI state #1, respectively, and actual iterations 906 and 908 are split from the same nominal iteration because that nominal iteration crosses the slot boundary between slots #1 and #2.

[0103] The type of mapping order of the TCIs may be any type, such as a sequential mapping type, a cycling mapping type, or any other predefined mapping type. For example, in some other embodiments, the mapping order of the TCIs in the actual iterations 902, 904, 906, 908, and 910 may follow a sequential set of TCI states: {TCI state #1, TCI state #1, TCI state #2, TCI state #2, TCI state #1}. In other words, the actual iterations 902, 904, 906, 908, and 910 may map to TCI state #1, TCI state #1, TCI state #2, TCI state #2, and TCI state #1, respectively. In some other embodiments, the mapping order of the TCIs in the actual iterations 902, 904, 906, 908, and 910 may follow a sequential set of TCI states: {TCI state #1, TCI state #1, TCI state #2, TCI state #2}. In some embodiments, the predefined mapping type may refer to at least one of a half-half mapping order, a slot-based mapping order, or a subslot-based mapping order. In one embodiment, the half-half mapping order may apply a first TCI state to a first half-repetition number and a second TCI state to a second half-repetition number. In one embodiment, the slot-based mapping order may apply a first TCI state to a first slot (e.g., at the start of a repetition) and a second TCI state to a second slot, etc. In one embodiment, the subslot-based mapping order may apply a first TCI state to a first subslot (e.g., at the start of a repetition) and a second TCI state to a second subslot, etc.

[0104] In some embodiments, the mapping order of the TCI states may be configured by the RRC (e.g., by an RRC parameter or an item in a TDRA list / table). In some embodiments, the mapping order of the TCI states may be indicated by a DCI (e.g., a new DCI field or an existing field indicating a new entry / item configured by the RRC). In some embodiments, the mapping order of the TCI states may be activated by the MAC-CE. For example, the MAC-CE may activate the mapping order of a particular TCI state by a field or a bitmap.

[0105] In some embodiments, the mapping order of TCI states is initially set / indicated / activated on a per nominal repeat basis, but may then be changed on a per actual repeat basis. In such cases, whether to map to nominal repeat as a basis or to map to actual repeat as a basis may be set / switched dynamically.

[0106] FIG. 10 illustrates a process for changing the mapping criteria of a TCI state from a nominal repetition criteria to an actual repetition criteria according to an example embodiment of the present disclosure. Figure As shown in Figure 10, nominal repetitions 1002, 1004, 1006, and 1008 map to TCI state #1, TCI state #2, TCI state #1, and TCI state #2, respectively. The nominal repetition 1006 is split into two actual repetitions by a slot boundary, and the network may change the TCI state mapping order based on the actual repetition (e.g., by specific indication), so that a portion of the nominal repetition 1006 ( for example , one of the actual iterations split from the nominal iteration 1006, shaded by the diagonal line in FIG. 10), may be mapped to another TCI state (e.g., TCI state #2).

[0107] In some embodiments, a specific indication may be carried by the DCI and / or MAC-CE signaling. In some embodiments, the specific indication may be used to switch the TCI mapping order between "semi-static" and "dynamic." For example, if the RRC configures a continuous mapping type, a specific indication bit value (e.g., "0" means not to change the configured mapping type, and "1" means to use a cyclic or predefined mapping type) may be used to switch the TCI state mapping order for scheduling. In some embodiments, the specific indication may be used to indicate a specific TCI state that the UE should apply when segmentation of a nominal repetition occurs (e.g., a nominal repetition is divided into two or more actual repetitions). In some embodiments, the UE may report a UE capability message to inform the network whether the UE supports switching the TCI state mapping order.

[0108] In some embodiments, if the number of transmission opportunities for the repetition is sufficiently large (e.g., larger than a configured value), the TCI state mapping order for the repetition may be a combination of a sequential mapping type and a cyclical mapping type. In some embodiments, if the number of transmission opportunities for the repetition is larger than a configured value, the UE may apply a cyclical mapping type to X repetitions and a sequential mapping type to Y repetitions, where X and Y are natural numbers. For example, if the number of repetitions is "8" ( for example, the number of transmission opportunities for repetition is "8") and "X=Y=4", four consecutive repetitions can be configured from a cyclic mapping type (e.g., by mapping to a consecutive set of TCI states: {TCI state #1, TCI state #2, TCI state #1, TCI state #2}), and the other four consecutive repetitions can be configured from a consecutive mapping type (e.g., by mapping to a consecutive set of TCI states: {TCI state #1, TCI state #1, TCI state #2, TCI state #2}).

[0109] FIG. 11 illustrates a TCI mapping order for multiple consecutive iterations according to an example embodiment of the present disclosure. Figure As shown in Figure 11, two or more consecutive (nominal) repetitions under the non-slot-based repetition scheme can be mapped to one TCI state. For example, consecutive repetitions 1102 and 1104 are mapped to TCI state #1, and consecutive repetitions 1106 and 1108 are mapped to TCI state #2.

[0110] In some embodiments, the number of consecutive repetitions mapped to one TCI state may be configured / indicated by RRC, DCI, or / and MAC-CE signaling. In some embodiments, the number of consecutive repetitions may be configured by the parameter RepNumTypeB. In some embodiments, if a parameter indicating the TCI state mapping order for a non-slot-based repetition scheme is not configured, the number of consecutive repetitions may be configured by the parameter RepNumTypeB. In some embodiments, the number of consecutive repetitions may be indicated by a parameter indicating the number of repetitions included in a row / item / entry of the TDRA list. The network may indicate a certain number of consecutive repetitions to the UE by indicating a row / item / entry of the TDRA list in the scheduling DCI. In some embodiments, the number of consecutive repetitions may be dynamically changed by the network. In some embodiments, whether the number of consecutive repetitions can be an arbitrary number may be reported to the network by a UE capability message from the UE. In some embodiments, the number of consecutive repetitions may refer to the number of transmission opportunities for nominal repetitions or actual repetitions. More specifically, the UE may decide to apply the same TCI state to a specific number of consecutive nominal repetitions or actual repetitions. In some embodiments, the number of consecutive repeats may be the number of nominal repeats or the actual repeats in the slot.

[0111] FIG. 12 illustrates a TCI mapping order for multiple consecutive iterations according to another example embodiment of the present disclosure. FigureAs shown in Figure 12, the number of repetitions corresponding to one TCI state may be variable. For example, there may be X (e.g., "X=3" in Figure 12) repetitions (e.g., repetitions 1202, 1204, and 1206) mapped to a first TCI state (e.g., TCI state #1) and Y (e.g., "Y=1" in Figure 12) repetitions (e.g., repetition 1208) mapped to a second TCI state (e.g., TCI state #2). The parameters X and Y may be set, predefined, or indicated by the network.

[0112] In some embodiments, the non-uniform TCI state mapping order for the repetitions may be dynamically scheduled by the network. The non-uniform TCI state mapping order may refer to a TCI state mapping order in that the repetitions mapped to the same TCI state are not equally distributed among adjacent repetitions. In other words, the number of repetitions corresponding to a particular TCI state may vary. In some embodiments, the UE may transmit a UE capability message to inform the network of the supported values ​​(or value ranges) of parameters X and / or Y. In some embodiments, the non-uniform mapping may be performed when certain conditions are met. The conditions may be associated with the number of control resource sets (CORESETs), the configuration of the multi-TRP scheme, the channel quality (e.g., channel state information (CSI) reports), and / or the UE implementation.

[0113] Time Domain Offset Distribution Among Multiple Iterations In some aspects of the present disclosure, there may be a time domain offset between two adjacent iterations (nominal or actual). The value of the time domain offset may be fixed or variable depending on the network configuration. For example, the time domain offset may be configured / indicated / activated by RRC, DCI, or MAC-CE signaling.

[0114] FIG. 13 illustrates a time domain offset distribution pattern during multiple repetitions according to an example embodiment of the present disclosure. Figure As shown in Figure 13, between every two adjacent iterations (e.g., between iterations 1302 and 1304, between iterations 1304 and 1306, and between iterations 1306 and 1308), there is a time-domain offset (e.g., OV7).

[0115] It should be noted that the terms "offset(value)" and "time-domain offset(value)" may be used interchangeably in this disclosure unless otherwise specified.

[0116] In some other embodiments, more than one offset value may be configured. In other words, the offset between every two adjacent repetitions may be configured separately and may not have the same value. The offset may be configured / indicated / activated by RRC, DCI, or MAC-CE signaling.

[0117] In some other embodiments, the offset may be determined by the number of transmission opportunities omitted for the nominal repeat. In some other embodiments, the offset may be determined by the number of transmission opportunities omitted for the actual repeat. In some embodiments, the offset may be determined by omitting an actual repeat in a slot before a nominal repeat that crosses a slot boundary. In some other embodiments, the offset may be determined by omitting an actual repeat in a slot after a nominal repeat that crosses a slot boundary. Taking FIG. 9 as an example, actual repeat 906 is the actual repeat in the slot before the nominal repeat that crosses a slot boundary (i.e., slot #1), and actual repeat 908 is the actual repeat in the slot after the nominal repeat that crosses a slot boundary (i.e., slot #2).

[0118] In some embodiments, the UE may perform the actions shown in Table 1.

[0119] [Table 1]

[0120] FIG. 14 illustrates a time domain offset distribution pattern during multiple repetitions according to an example embodiment of the present disclosure. Figure As shown in FIG. 14, a non-zero offset value (e.g., OV8) occurs between iterations 1404 and 1406, and a zero offset value ( for example , with an offset value of "0") is between iterations 1402 and 1404 and between iterations 1406 and 1408. In other words, iterations 1402 and 1404 are two consecutive iterations, and iterations 1406 and 1408 are also consecutive iterations.

[0121] In some embodiments, the offset may be dynamically scheduled by the network. In some embodiments, the network may send an indication to the UE of whether scheduling of transmission opportunities for recurrences involves any offset. The scheduling may refer to recurring transmissions scheduled by a DCI, which may include an offset indication.

[0122] In some embodiments, the supported offset values ​​may be reported by the UE capabilities. In some embodiments, whether to apply the offset may be dynamically indicated by the network. In some embodiments, once the offset is configured, the network may activate or deactivate the use of the offset using DCI or MAC-CE signaling. Once the offset is activated, the UE may apply the offset. Once the offset is deactivated, the UE may not apply the offset even if it is configured.

[0123] In some embodiments, whether to apply an offset may be reported by a UE capability message from the UE. In some embodiments, the time unit of the offset (value) between two repetitions may be a symbol, a subslot, or a slot. In some embodiments, the offset may be applied when a specific condition is met. For example, the condition may be determined based on whether the repetition crosses an invalid symbol or slot boundary. For example, the condition may be determined based on whether the number of configured CORESETs is equal to or greater than a threshold. For example, the condition may be indicated from the configuration for a multi-TRP scheme. For example, the condition may be determined based on whether the channel quality (e.g., CSI report) meets a predetermined level.

[0124] In some embodiments, an offset may be applied between two adjacent repeats that map to different TCI states. In some other embodiments, an offset may be applied between two adjacent repeats that map to the same TCI state.

[0125] In some embodiments, no offset may be applied between two adjacent repetitions that map to a TCI state that is not configured from "QCL-TypeD." In other words, if a repetition is not configured from QCL-TypeD, the duration between two transmission opportunities of adjacent repetitions may be determined based on the configured repetition scheme (e.g., Type A repetition or Type B repetition) instead of the indicated offset. In some embodiments, the ... Sounding reference signal ( SRS ) The offset may not be applied between two adjacent repetitions that map to the TCI state / UL beam information associated with a resource set. In other words, if the repetitions are associated with the same SRS resource set, the duration between two adjacent transmission opportunities of the repetitions may be determined based on the configured repetition scheme (e.g., Type A repetition or Type B repetition) instead of the indicated offset.

[0126] In some embodiments, the UE may be configured with multiple offsets, including a first offset and a second offset. The first offset may be applied between two adjacent repeating transmit opportunities that map to TCI state / UL beam information associated with the same SRS resource set, and the second offset may be applied between two adjacent repeating transmit opportunities that map to TCI state / UL beam information associated with different SRS resource sets. In some other embodiments, the first offset may be applied between two neighboring transmit opportunities that map to TCI state / UL beam information associated with the same UE antenna panel, and the second offset may be applied between two neighboring transmit opportunities that map to TCI state / UL beam information associated with different UE antenna panels. Information regarding the UE panel (or "UE panel information") may be derived from BS signaling. In some embodiments, the UE panel information may be derived from TCI state / UL beam indication information. In some other embodiments, the UE panel information for the TCI state / UL beam may be explicitly indicated by BS signaling. The first offset may be less than or equal to the second offset. In some embodiments, the first offset value may be zero.

[0127] Actual PUSCH repetitions for repetition type B As mentioned above, a nominal repetition may be split into more than one actual repetition when crossing a slot boundary or an invalid symbol. In some embodiments, the symbol used as the offset mentioned above may be considered an invalid symbol. In such cases, two adjacent transmission opportunities of a repetition separated by the offset are actual repetitions. In some embodiments, if the nominal repetition separated by an invalid symbol is a PUSCH repetition, the invalid symbol is a DL symbol. The invalid symbol may be located immediately before the first symbol of the nominal repetition and / or immediately after the last symbol of the nominal repetition.

[0128] In some embodiments, if a given offset is greater than or equal to a predetermined value, the unfinished iteration may be dropped.

[0129] FIG. 15 illustrates a wireless communication method 1500 performed by a UE to perform repetition-based UL transmissions in accordance with one embodiment of the present disclosure. Draw flowchart is Actions 1502, 1504, 1506, and 150 8 is Although shown as separate actions represented as separate blocks in FIG. 15, these separately shown actions should not be construed as necessarily order dependent. The order in which the actions are performed in FIG. 15 is not intended to be construed as limiting, and any number of the disclosed blocks may be combined in any order to implement this method, or alternative methods. Furthermore, actions 1502, 1504, 1506, and 150 of 8 Each may be performed independently of the other actions and may be omitted in some embodiments of the present disclosure.

[0130] In action 1502, the UE may receive an RRC message from the BS. The RRC message may include first information, second information, and third information. The first information may indicate a repetition type that supports more than one repeated transmission within a slot. For example, the repetition type may be the slot-based repetition scheme (or "repetition type A") described above. For example, the repetition type may be the non-slot-based repetition scheme or "repetition type B" described above. The second information may indicate multiple TCI states configured for the UE. The third information may include multiple items, each of which configures a PUSCH resource allocation. In some embodiments, the third information may be represented as (or correspond to) a TDRA list. An item of the TDRA list may refer to a row or entry of the TDRA list. Each item of the TDRA list may include one or more parameters for configuring a PUSCH resource allocation. For example, an item in the TDRA list may include at least one of an item index that identifies the item in the TDRA list, a slot offset (K1 and / or K2) that defines the time domain location of the PUSCH transmission opportunity, a starting symbol (S) of the PUSCH transmission opportunity, an allocation length (L) of the PUSCH transmission opportunity, and a certain number of PUSCH repetitions (e.g., RepNum or RepNumTypeB).

[0131] At action 1504, the UE may receive a DCI indicating one of the plurality of items. For example, the DCI may include an item / row / entry index of the TDRA list represented by the third information.

[0132] At action 1506, the UE may determine a nominal PUSCH repetition set according to one of the plurality of items, and a number of nominal PUSCH repetitions in the nominal PUSCH repetition set may be indicated by a first parameter included in the one of the plurality of items.

[0133] In some embodiments, the first parameter may be the previously described parameter RepNum or RepNumTypeB, which is used to indicate the nominal PUSCH repetition number. For example, if RepNumTypeB=2, the nominal PUSCH repetition number is "2". In such a case, the nominal PUSCH repetition set is two PUSCH repetitions. Includes , the PUSCH resource allocation for each of the PUSCH repetitions may be determined by parameters in the indicated item of the TDRA list (e.g., parameters K1, K2, S, and / or L). In some embodiments, one of the items indicated by the DCI may further include a second parameter indicating a (TCI state) mapping type between the set of nominal PUSCH repetitions and a plurality of TCI states. The (TCI state) mapping type may be a cyclic mapping type or a continuous mapping type.

[0134] At action 1508, the UE may transmit at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions. Each nominal PUSCH repetition in the set of nominal PUSCH repetitions may map to one of a plurality of TCI states.

[0135] As mentioned above, the UE may determine at least one actual PUSCH repetition by dividing a set of nominal PUSCH repetitions across at least one slot boundary or across at least one symbol that is considered invalid for UL transmission. For example, the at least one actual PUSCH repetition includes a first actual PUSCH repetition and a second actual PUSCH repetition. The first actual PUSCH repetition and the second actual PUSCH repetition may be divided from the same nominal PUSCH repetition in the set. In some embodiments, the first actual PUSCH repetition and the second actual PUSCH repetition may be mapped to the same TCI state.

[0136] In some embodiments, the UE may be configured from the fourth information indicating a time-domain offset between two adjacent nominal PUSCH repetitions in a nominal PUSCH repetition set. In some embodiments, the time-domain offset may be configured by the BS on a per nominal PUSCH repetition basis. In some embodiments, every two adjacent nominal PUSCH repetitions in a set of nominal PUSCH repetitions may have a time-domain offset.

[0137] Method 1500 may be advantageous for a UE to transmit data more reliably by enabling the UE to perform one or more PUSCH repetitions, each PUSCH repetition corresponding to a particular beam (e.g., TCI state). The mapping between PUSCH repetitions and beams may be performed based on configuration received from the network. Thus, method 1500 is more flexible and better adapted to the requirements of different 5G scenarios (e.g., multi-TRP scenarios).

[0138] The following may be used to further disclose terms, examples, embodiments, embodiments, actions, and / or behaviors.

[0139] Antenna Panel: A conceptual term for UE antenna implementations. A panel can be considered as an operating unit for controlling the transmit spatial filter (beam). A panel typically contains multiple antenna elements. Contains In some embodiments, beams may be formed by panels, and two panels are required to form two beams simultaneously. Such simultaneous beamforming from multiple panels depends on UE capabilities. A similar definition of "panel" may be possible by applying spatial receive filtering characteristics.

[0140] [HARQ (Hybrid Automatic Repeat Request)]: Function is implemented in Layer 1 ( for exampleThe HARQ entity ensures delivery between peer entities at the DL and UL (physical layer). A single HARQ process supports one transport block (TB) when the physical layer is not configured for downlink / uplink spatial multiplexing, and supports one or more TBs when the physical layer is configured for downlink / uplink spatial multiplexing. There is one HARQ entity per serving cell. Each HARQ entity supports several parallel DL and UL HARQ processes.

[0141] Timer: The MAC entity can set one or more timers for individual purposes, for example to trigger some uplink signal retransmissions or to limit some uplink signal retransmission periods. Once started, a timer runs until it is stopped or expires; otherwise, it does not run. A timer can be started if it is not running, or restarted if it is running. A timer is always started or restarted from its initial value. .first time The initial value may be set by the gNB via downlink RRC signaling, but is not limited to this.

[0142] [BWP (Bandwidth Fraction)]: A subset of the total cell bandwidth of a cell is called a BWP, and beamwidth fraction adaptation is achieved by configuring the UE with a BWP and informing the UE which of the configured BWPs is currently active. To enable bandwidth adaptation (BA) on a PCell, the gNB configures the UE with UL and DL BWPs. In the case of CA, to enable BA on an SCell, the gNB configures the UE with at least a DL BWP (i.e., it may not be present in the UL). For a PCell, the initial BWP is the BWP used for initial access. For an SCell, the initial BWP is the BWP that the UE is initially configured to operate on upon SCell activation. The UE can be configured from the first active uplink BWP via the firstActiveUplinkBWP IE. If the first active uplink BWP is configured for an SpCell, the firstActiveUplinkBWP IE field contains the ID of the UL BWP to be activated when performing RRC (re)configuration. If the field is not present, RRC (re)configuration does not impose a BWP switch. If the first active uplink BWP is configured for the SCell, the firstActiveUplinkBWP IE field contains the ID of the uplink bandwidth portion to be used during MAC activation of the SCell.

[0143] [Quasi-Co-Location (QCL)]: Two antenna ports are said to be quasi-colocated if the characteristics of the channel through which symbols on one antenna port are carried can be inferred from the channel through which symbols on the other antenna port are carried. The "channel characteristics" mentioned above may include Doppler shift, Doppler spread, mean delay, delay spread, and spatial RX parameters. These properties are classified into different QCL types in the NR specifications. For example, QCL-Type D refers to spatial RX parameters. QCL-Type D is also referred to as a "beam" in this specification.

[0144] [TCI State]: The TCI state includes parameters for setting the QCL relationship between one or two reference signals and a target reference signal set. For example, the target reference signal set includes PDSCH, PDCCH, Physical uplink control channel ( PUCCH ) or a DM-RS port of a PUSCH. The one or two reference signals may be UL or DL ​​reference signals. In NR Rel-15 / 16, the TCI state is used for DL ​​QCL indication, whereas the spatial relationship information is used to provide UL spatial transmit filter information for UL signals or UL channels. Here, the TCI state may refer to information provided as well as spatial relationship information that can be used for UL transmission. In other words, from the UL perspective, the TCI state is used to indicate the UL transmission and the DL or UL reference signals (e.g., CSI-RS, Synchronization signal block ( SSB ) , SRS, Phase tracking reference signal ( PTRS ) ) provides UL beam information that can provide information for the relationship between

[0145] [Panel]: UE panel information can be derived from TCI status / UL beam indication information or network signaling.

[0146] Beam: The term "beam" can be replaced here by spatial filter. For example, when a UE reports a preferred gNB TX beam, the UE is essentially selecting the spatial filter to be used by the gNB. The term "beam information" is used to provide information about which beam / spatial filter is being used / selected.

[0147] Figure 16 is a block diagram illustrating a node 1600 for wireless communication according to one embodiment of the present disclosure. As shown in Figure 16, the node 1600 may include a transceiver 1620, a processor 1628, a memory 1634, one or more presentation components 1638, and at least one antenna 1636. The node 1600 may also include a radio frequency (RF) spectrum band module, a BS communication module, a network communication module, a system communication management module, input / output (I / O) ports, I / O components, and a power supply (not shown in Figure 16).

[0148] Each of the components may communicate directly or indirectly with each other via one or more buses 1640. Node 1600 may be a UE or a BS that performs the various functions disclosed with reference to FIGS.

[0149] The transceiver 1620 has a transmitter 1622 (e.g., transmit / transmit circuitry) and a receiver 1624 (e.g., receive / receive circuitry) and may be configured to transmit and / or receive time and / or frequency resource partitioning information. The transceiver 1620 may be configured to transmit in different types of subframes and slots, including, but not limited to, usable, unavailable, and flexibly usable subframe and slot formats. The transceiver 1620 may be configured to receive data channels and control channels.

[0150] Node 1600 may include a variety of computer-readable media, which may be any available media that can be accessed by node 1600, including volatile (and / or nonvolatile memory) media and removable (and / or non-removable) media.

[0151] Computer-readable media may include computer storage media and communication media. Computer storage media may include both volatile (and / or nonvolatile) and removable (and / or non-removable) media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules, or data.

[0152] Computer storage media may include RAM, ROM, EPROM, EEPROM, flash memory (or other memory technology), CD-ROM, digital versatile disks (DVD) (or other optical disk storage), magnetic cassettes, magnetic tape, magnetic disk storage (or other magnetic storage), etc. Computer storage media need not include propagated data signals. Communication media may typically embodi computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism and include any information delivery media.

[0153] The term "modulated data signal" may mean a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. Communication media may include wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, RF, infrared and other wireless media. Combinations of any of the above should also be included within the scope of computer-readable media.

[0154] Memory 1634 may include computer storage media in the form of volatile and / or nonvolatile memory. Memory 1634 may be removable, non-removable, or a combination thereof. Example memory may include solid-state memory, a hard drive, an optical disk drive, etc. As shown in FIG. 16, memory 1634 may store computer-readable and / or computer-executable programs 1632 (e.g., software code or sets of instructions) that, when executed, are configured to cause processor 1628 to perform various functions disclosed herein, for example, with respect to FIGS. 1-15. Alternatively, programs 1632 may not be directly executable by processor 1628, but may be configured (e.g., when compiled and executed) to cause node 1600 to perform various functions disclosed herein.

[0155] The processor 1628 (e.g., having processing circuitry) may include intelligent hardware devices such as a central processing unit (CPU), microcontroller, ASIC, etc. The processor 1628 may include memory. The processor 1628 receives and transmits data 1630 and programs 1632 from memory 1634 via the transceiver 1620, the baseband communication module, and / or the network communication module. The processor 1628 may also process information for transmission to the transceiver 1620 for transmission to the network communication module via the antenna 1636 for transmission to the CN.

[0156] One or more presentation components 1638 can present a data indication to a person or another device. Examples of presentation components 1638 can include a display device, a speaker, a printing component, a vibrating component, etc.

[0157] In view of the present disclosure, it is apparent that various techniques may be used to implement the disclosed concepts without departing from the scope of those concepts. Moreover, while the concepts have been disclosed with specific reference to certain embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the scope of those concepts. The disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive. It should also be understood that the disclosure is not limited to the particular embodiments disclosed. Moreover, many rearrangements, modifications, and substitutions are possible without departing from the scope of the disclosure.

Claims

1. 1. A wireless communication method performed by a user equipment (UE) for performing repetition-based uplink (UL) transmissions, comprising: receiving a radio resource control (RRC) message from a base station (BS), the RRC message comprising: First information indicating a slot-based repetition type or a non-slot-based repetition type; second information indicating a plurality of transmission configuration indicator (TCI) states configured for the UE; third information including a plurality of items, each of the plurality of items configuring a physical uplink shared channel (PUSCH) resource allocation; and Fourth information indicating a time domain offset between two adjacent PUSCH repetitions in a set of PUSCH repetitions. a process comprising: receiving downlink control information (DCI) indicating one of the plurality of items; If the first information indicates a non-slot-based repetition type, determining a set of nominal PUSCH repetitions and a number of nominal PUSCH repetitions in the set of nominal PUSCH repetitions according to the one of the plurality of items; determining at least one actual PUSCH repetition by dividing the set of nominal PUSCH repetitions over at least one symbol that is considered invalid for uplink (UL) transmission; and transmitting the at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions; each nominal PUSCH repetition in the set of nominal PUSCH repetitions maps to one of the plurality of TCI states; the at least one actual PUSCH repetition includes a first actual PUSCH repetition and a second actual PUSCH repetition; the first actual PUSCH repetition and the second actual PUSCH repetition are split from the same nominal PUSCH repetition within the set of nominal PUSCH repetitions; and the first actual PUSCH repetition and the second actual PUSCH repetition map to the same TCI state among the plurality of TCI states; When the first information indicates a slot-based repetition type and when the first information indicates a non-slot-based repetition type, a parameter of a repetition number of a slot-based repetition scheme and a parameter of a repetition number of a non-slot-based repetition scheme are configured in two different RRC parameters, respectively, and a parameter of the fourth information for slot-based repetition and a parameter of the fourth information for non-slot-based repetition are configured in two different RRC parameters; a slot-based repetition of an UL transmission is performed using a parameter of a repetition number of the slot-based repetition scheme and a parameter of the fourth information regarding slot-based repetition, and a non-slot-based repetition of an UL transmission is performed using a parameter of a repetition number of the non-slot-based repetition scheme and a parameter of the fourth information regarding non-slot-based repetition; Wireless communication method.

2. The wireless communication method of claim 1 , wherein the one of the plurality of items further includes a second parameter indicating a mapping type between the set of nominal PUSCH repetitions and the plurality of TCI states.

3. The wireless communication method according to claim 2 , wherein the mapping type is a cyclic mapping type or a continuous mapping type.

4. The wireless communication method of claim 1 , wherein the third information corresponds to a time domain resource allocation (TDRA) list.

5. The wireless communication method of claim 1 , wherein the time domain offset is configured by the BS on a per nominal PUSCH repetition basis.

6. The wireless communication method of claim 1 , wherein every two adjacent nominal PUSCH repetitions in the set of nominal PUSCH repetitions have the same time-domain offset.

7. 1. A user equipment (UE) for repetition-based uplink (UL) transmission, the UE comprising: at least one processor; and at least one memory coupled to the at least one processor, the at least one memory comprising: receiving a radio resource control (RRC) message from a base station (BS), the RRC message comprising: First information indicating a slot-based repetition type or a non-slot-based repetition type; second information indicating a plurality of transmission configuration indicator (TCI) states configured for the UE; third information including a plurality of items, each of the plurality of items including: the third information configuring a physical uplink shared channel (PUSCH) resource allocation; and fourth information indicating a time domain offset between two adjacent PUSCH repetitions in a set of PUSCH repetitions; receiving downlink control information (DCI) indicating one of the plurality of items; If the first information indicates a non-slot-based repetition type, determining a set of nominal PUSCH repetitions and a number of nominal PUSCH repetitions in the set of nominal PUSCH repetitions according to the one of the plurality of items; determining at least one actual PUSCH repetition by dividing the set of nominal PUSCH repetitions over at least one symbol that is deemed invalid for uplink (UL) transmission; transmitting the at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions. storing computer-executable instructions that, when executed by the at least one processor, cause the UE to: each nominal PUSCH repetition in the set of nominal PUSCH repetitions maps to one of the plurality of TCI states; the at least one actual PUSCH repetition includes a first actual PUSCH repetition and a second actual PUSCH repetition; The first actual PUSCH repetition and the second actual PUSCH repetition are split from the same nominal PUSCH repetition within the set of nominal PUSCH repetitions; and the first actual PUSCH repetition and the second actual PUSCH repetition map to the same TCI state among the plurality of TCI states; When the first information indicates a slot-based repetition type and when the first information indicates a non-slot-based repetition type, a parameter of a repetition number of a slot-based repetition scheme and a parameter of a repetition number of a non-slot-based repetition scheme are configured in two different RRC parameters, respectively, and a parameter of the fourth information for slot-based repetition and a parameter of the fourth information for non-slot-based repetition are configured in two different RRC parameters; a slot-based repetition of an UL transmission is performed using a parameter of a repetition number of the slot-based repetition scheme and a parameter of the fourth information regarding slot-based repetition, and a non-slot-based repetition of an UL transmission is performed using a parameter of a repetition number of the non-slot-based repetition scheme and a parameter of the fourth information regarding non-slot-based repetition; UE.

8. The UE of claim 7 , wherein the one of the plurality of items further includes a second parameter indicating a mapping type between the set of nominal PUSCH repetitions and the plurality of TCI states.

9. The UE of claim 8 , wherein the mapping type is a cyclic mapping type or a continuous mapping type.

10. The UE of claim 7 , wherein the third information corresponds to a time domain resource allocation (TDRA) list.

11. The UE of claim 7 , wherein the time domain offset is configured by the BS on a per nominal PUSCH repetition basis.

12. The UE of claim 7 , wherein every two adjacent nominal PUSCH repetitions in the set of nominal PUSCH repetitions have the same time-domain offset.

13. 1. A base station (BS) for performing repetition-based uplink (UL) transmission, the BS comprising: at least one processor; and at least one memory coupled to the at least one processor, the at least one memory comprising: sending a radio resource control (RRC) message to a user equipment (UE), the RRC message comprising: First information indicating a slot-based repetition type or a non-slot-based repetition type; second information indicating a plurality of transmission configuration indicator (TCI) states configured for the UE; third information including a plurality of items, each of the plurality of items including the third information configuring a physical uplink shared channel (PUSCH) resource allocation; and fourth information indicating a time domain offset between two adjacent PUSCH repetitions in the set of PUSCH repetitions; transmits downlink control information (DCI) indicating one of the plurality of items, and if the first information indicates a non-slot-based repetition type, the UE determines a set of nominal PUSCH repetitions and a number of nominal PUSCH repetitions in the set of nominal PUSCH repetitions according to the one of the plurality of items; and the UE determines at least one actual PUSCH repetition by dividing the set of nominal PUSCH repetitions over at least one symbol that is deemed invalid for uplink (UL) transmission; receiving, from the UE, at least one actual PUSCH repetition determined based on the set of nominal PUSCH repetitions; storing computer-executable instructions that, when executed by the at least one processor, cause the BS to perform: each nominal PUSCH repetition in the set of nominal PUSCH repetitions maps to one of the plurality of TCI states; the at least one actual PUSCH repetition includes a first actual PUSCH repetition and a second actual PUSCH repetition; The first actual PUSCH repetition and the second actual PUSCH repetition are split from the same nominal PUSCH repetition within the set of nominal PUSCH repetitions; and the first actual PUSCH repetition and the second actual PUSCH repetition map to the same TCI state among the plurality of TCI states; When the first information indicates a slot-based repetition type and when the first information indicates a non-slot-based repetition type, a parameter of a repetition number of a slot-based repetition scheme and a parameter of a repetition number of a non-slot-based repetition scheme are configured in two different RRC parameters, respectively, and a parameter of the fourth information for slot-based repetition and a parameter of the fourth information for non-slot-based repetition are configured in two different RRC parameters; a slot-based repetition of an UL transmission is performed using a parameter of a repetition number of the slot-based repetition scheme and a parameter of the fourth information regarding slot-based repetition, and a non-slot-based repetition of an UL transmission is performed using a parameter of a repetition number of the non-slot-based repetition scheme and a parameter of the fourth information regarding non-slot-based repetition; B.S.

14. The BS of claim 13 , wherein the one of the plurality of items further comprises a second parameter indicating a mapping type between the set of nominal PUSCH repetitions and the plurality of TCI states.

15. The BS according to claim 14, wherein the mapping type is a cyclic mapping type or a continuous mapping type.

16. The BS of claim 13 , wherein the third information corresponds to a time domain resource allocation (TDRA) list.

17. The computer-executable instructions, when executed by the at least one processor, configuring the UE with the time domain offset on a per nominal PUSCH repetition basis; The BS of claim 13 , further comprising:

18. The BS of claim 13 , wherein two adjacent nominal PUSCH repetitions in the set of nominal PUSCH repetitions have the same time-domain offset.

Images