Method and apparatus for improving uplink data channel repetition by using multiple time slots to send time intervals

Abstract

The present disclosure relates to apparatuses, methods, and computer-readable media for improving uplink data channel repetition by using multiple time slots to send time intervals. An example method for wireless communication at a user equipment (UE) includes: receiving scheduling downlink control information (DCI) that indicates, in a time domain resource allocation (TDRA) field, a scaling parameter for a transport block size (TBS) for a physical uplink shared channel (PUSCH) transmission, the PUSCH transmission being for transmission as a PUSCH repetition over a repetition unit that includes multiple single repetitions. The example method further includes: sending the PUSCH repetition with scaling based on the scaling parameter indicated in the scheduling DCI.

Description

Technical Field

[0001] The present disclosure generally relates to communication systems, and more particularly to coverage enhancement. Background Art

[0002] Wireless communication systems are widely deployed to provide various types of telecommunication services, such as, for example, telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ a multiple access technology that is capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0003] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the city, national, regional, or even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the ongoing evolution of mobile broadband released by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with respect to the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable low latency communication (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the Invention

[0004] A simplified summary of one or more aspects is presented below in order to provide a basic understanding of such aspects. This Summary of the Invention is not an extensive overview of all contemplated aspects, and is neither intended to identify key or critical elements of all aspects nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0005] In aspects of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a user equipment (UE) are provided. An example apparatus receives scheduling downlink control information (DCI) that indicates, in a time-domain resource allocation (TDRA) field, a scaling parameter for a transport block size (TBS) for a physical uplink shared channel (PUSCH) transmission, the PUSCH transmission being for transmission as PUSCH repetitions over a repetition unit including a plurality of single repetitions. The example apparatus also transmits PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI.

[0006] In another aspect of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a UE are provided. An example apparatus determines a TBS for a PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission over a repetition unit including a plurality of single repetitions. The example apparatus also transmits PUSCH repetitions over the repetition unit including the plurality of single repetitions using the determined TBS.

[0007] In another aspect of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a UE are provided. An example apparatus determines a TBS for a PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission over a repetition unit including a plurality of single repetitions. The example apparatus also multiplexes uplink control information (UCI) with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions over a repetition unit including a plurality of single repetitions. Additionally, the example apparatus transmits the PUSCH repetitions and the multiplexed UCI over the multiple repetitions.

[0008] To achieve the foregoing and related purposes, one or more aspects include the features that are fully described and particularly pointed out in the claims below. The following description and the drawings set forth in detail certain illustrative features of one or more aspects. However, these features are merely indicative of the various ways in which the principles of the various aspects may be employed, and this description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0010] Figure 2A is a diagram illustrating an example of a first frame in accordance with various aspects of the present disclosure.

[0011] Figure 2BFIG. is an example showing DL channels within a subframe in accordance with various aspects of the present disclosure.

[0012] Figure 2C FIG. is an example showing a second frame in accordance with various aspects of the present disclosure.

[0013] Figure 2D FIG. is an example showing UL channels within a subframe in accordance with various aspects of the present disclosure.

[0014] Figure 3 FIG. is an example showing a base station and a UE in an access network.

[0015] Figure 4 FIG. is an example representation of a multi-slot PUSCH for uplink transmission by a UE in accordance with the teachings disclosed herein.

[0016] Figure 5 FIG. shows an example timing diagram including a first time slot and a second time slot in accordance with the teachings disclosed herein.

[0017] Figure 6A FIG. shows an example multi-slot PUSCH including PUSCH repetition type A in accordance with the teachings disclosed herein.

[0018] Figure 6B FIG. shows an example multi-slot PUSCH including PUSCH repetition type B in accordance with the teachings disclosed herein.

[0019] Figure 7 FIG. is an example communication flow between a base station and a UE in accordance with the teachings disclosed herein.

[0020] Figures 8 to 10 FIG. is a flowchart of a method for wireless communication at a UE in accordance with the teachings disclosed herein.

[0021] Figure 11 FIG. is an example showing a hardware implementation example for an example apparatus in accordance with the teachings disclosed herein. DETAILED DESCRIPTION

[0022] The detailed description set forth below in connection with the appended drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. For the purpose of providing a thorough understanding of the various concepts, the detailed description includes specific details. It will be apparent, however, to one of ordinary skill in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0023] Aspects of a telecommunications system will now be presented with reference to various apparatuses and methods. These apparatuses and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0024] By way of example, an element or any part of an element or any combination of elements can be implemented as a "processing system" that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system on a chip (SOCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in the processing system can execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executable programs, execution threads, processes, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0025] Thus, in one or more example embodiments, the described functions can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored on a computer-readable medium or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the foregoing types of computer-readable media, or any other media that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0026] The example techniques disclosed herein generally relate to improving the use of uplink data channel repetitions using multi-slot transmission time intervals (TTIs). For example, 5G NR may support the repeated transmission of an uplink data channel (e.g., Physical Uplink Shared Channel (PUSCH)) over consecutive time slots (e.g., via time slot repetition, aggregation, multi-slot PUSCH) to, for example, increase the signal-to-noise ratio (SNR) for transmission reliability. For example, PUSCH repetition may be applied to coverage-limited scenarios. When repeating PUSCH transmissions to enhance coverage, a modulation and coding scheme (MCS) with quadrature phase shift keying (QPSK) may be used as the highest modulation order (e.g., 16-quadrature amplitude modulation (QAM) or 64QAM), where lower radio frequency power efficiency may not be used for coverage-limited scenarios. For example, a UE may reduce its maximum output power due to higher-order modulation, and the maximum power reduction values for 16QAM and 64QAM are greater than that of QPSK. In particular, even for the maximum supported code rate “R” of QPSK, the associated effective code rate (R eff = R / 4) for a 4-slot PUSCH (e.g., R eff = R / 4) or an 8-slot PUSCH (e.g., R eff ) may be very low.

[0027] However, for an uplink coverage-limited scenario where the transmission power of the UE may be the bottleneck, a very low R eff with an increased bandwidth may not improve transmission reliability and may consume more resources. For example, the combined gain of a lower R eff may be offset by the increased noise power due to the higher bandwidth, which may effectively make the additional bandwidth unavailable. Therefore, to improve system capacity, TBS scaling and / or MCS scaling may be implemented for multi-slot PUSCH. In an example, the code rate or TBS may be amplified (e.g., amplified by a factor of 2 or 4) for a four-slot PUSCH.

[0028] In addition, to maintain the low peak-to-average power ratio (PAPR) characteristic, the UE may not simultaneously transmit two uplink channels or signals on the same carrier. If the single-slot PUCCH partially or completely overlaps with the single-slot PUSCH, the UE may multiplex the UCI onto the PUSCH transmission (e.g., when specific conditions such as timeline requirements are met). For example, for a multi-slot PUSCH, if a PUSCH transmission in one slot overlaps with the single-slot PUSCH and the multiplexing conditions are met, the UCI can be multiplexed onto the PUSCH transmission in that slot. For a multi-slot PUSCH transmission with TBS scaling or MSC scaling, the TBS can be scaled up. However, as the scaling ratio increases, the number of UCI resource elements (REs) may decrease, resulting in a potential loss of UCI transmission reliability on the PUSCH.

[0029] Figure 1 FIG. is an example diagram illustrating a wireless communication system and an access network 100 including base station 102, base station 180, and UE 104.

[0030] In some examples, a wireless communication device such as UE 104 may be configured to manage one or more aspects of wireless communication through TBS determination. As an example, in Figure 1 , UE 104 may include a TBS determination component 198 configured to receive a scheduling DCI that indicates, in a TDRA field, a scaling parameter for the TBS of a PUSCH transmission for transmission as a PUSCH repetition on a repetition unit including a plurality of single repetitions. Example TBS determination component 198 may also be configured to transmit the PUSCH repetition with scaling based on the scaling parameter indicated in the scheduling DCI.

[0031] In another aspect of the present disclosure, the TBS determination component 198 may be configured to determine the TBS of the PUSCH transmission at least partially based on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions. Example TBS determination component 198 may also be configured to transmit the PUSCH repetition on the repetition unit including a plurality of single repetitions using the determined TBS.

[0032] In another aspect of the present disclosure, the TBS determination component 198 can be configured to determine the TBS of a PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions. The example TBS determination component 198 can also be configured to multiplex UCI with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions. Additionally, the example TBS determination component 198 can also be configured to send PUSCH repetitions and multiplexed UCI on multiple repetitions.

[0033] Although the following description may focus on 5G NR, the concepts described herein can be applied to other similar fields, e.g., LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0034] A wireless communication system (also referred to as a wireless wide area network (WWAN)) includes base stations 102, base station 180, UE 104, evolved packet core (EPC) 160, and another core network 190 (e.g., 5G core (5GC)). The base station 102 can include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femto cells, pico cells, and micro cells.

[0035] The base station 102 configured for 4G LTE (collectively referred to as evolved universal mobile telecommunications system (UMTS) terrestrial radio access network (E-UTRAN)) can interface with the EPC 160 via a first backhaul link 132 (e.g., S1 interface). The base station 102 configured for 5G NR (collectively referred to as next-generation RAN (NG-RAN)) can interface with the core network 190 via a second backhaul link 184. Among other functions, the base station 102 can perform one or more of the following functions: transmission of user data, encryption and decryption of radio channels, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, radio access network information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 can communicate directly or indirectly with each other (e.g., via the EPC 160 or the core network 190) via a third backhaul link 134 (e.g., X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 can be wired or wireless.

[0036] Base station 102 can communicate wirelessly with UE 104. Each of the base stations 102 can provide communication coverage for a corresponding geographical coverage area 110. There can be overlapping geographical coverage areas 110. For example, small cell 102’ can have a coverage area 110’ that overlaps with the coverage area 110 of one or more macro base stations 102. A network including both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network can also include a Home evolved Node B (eNB) (HeNB), which can provide services to a restricted group called a Closed Subscriber Group (CSG). The communication link 120 between the base station 102 and the UE 104 can include an uplink (UL) (also referred to as a reverse link) transmission from the UE 104 to the base station 102 and / or a downlink (DL) (also referred to as a forward link) transmission from the base station 102 to the UE 104. The communication link 120 can use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link can be through one or more carriers. The base station 102 / UE 104 can use a spectrum with a bandwidth of up to Y MHz (e.g., 5 MHz, 10 MHz, 20 MHz, 100 MHz, 400 MHz, etc.) per carrier allocated in carrier aggregation with a total of up to Yx MHz (x component carriers) for transmission in each direction. The carriers can be adjacent or non-adjacent to each other. The allocation of carriers can be asymmetric for DL and UL (e.g., more or fewer carriers can be allocated for DL than for UL). The component carriers can include a primary component carrier and one or more secondary component carriers. The primary component carrier can be referred to as a Primary Cell (PCell), and the secondary component carriers can be referred to as Secondary Cells (SCells).

[0037] Some UEs 104 can communicate with each other using device-to-device (D2D) communication links 158. The D2D communication links 158 can use DL / UL WWAN spectrum. The D2D communication links 158 can use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Discovery Channel (PSDCH), Physical Sidelink Shared Channel (PSSCH), and Physical Sidelink Control Channel (PSCCH). D2D communication can be through various wireless D2D communication systems, such as WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0038] The wireless communication system may also include a Wi-Fi Access Point (AP) 150, which communicates with a Wi-Fi Station (STA) 152 via a communication link 154, for example, in a 5 GHz unlicensed spectrum. When communicating in an unlicensed spectrum, the STA 152 / AP 150 may perform a Clear Channel Assessment (CCA) before communication to determine whether the channel is available.

[0039] The small cell 102’ can operate in licensed and / or unlicensed spectrum. When operating in an unlicensed spectrum, the small cell 102’ can adopt NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as that used by the Wi-Fi AP 150. The small cell 102’ adopting NR in the unlicensed spectrum can improve the coverage of the access network and / or increase the capacity of the access network.

[0040] The electromagnetic spectrum is generally subdivided into different categories, frequency bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating frequency bands have been identified as Frequency Range Designation FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Although a part of FR1 is greater than 6 GHz, in various documents and articles, FR1 is generally referred to as the "sub-6 GHz" band (interchangeably). Similar naming issues sometimes occur with respect to FR2. In documents and articles, FR2 is generally referred to as the "millimeter wave" band (interchangeably), but it is different from the Extremely High Frequency (EHF) band (30 GHz to 300 GHz) identified by the International Telecommunication Union (ITU) as the "millimeter wave" band.

[0041] In view of the above aspects, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" etc. is used herein, it may broadly represent frequencies that may be less than 6 GHz, frequencies that may be within FR1, or frequencies that may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" etc. is used herein, it may broadly represent frequencies that may include mid-band frequencies, frequencies that may be within FR2, or frequencies that may be within the EHF band.

[0042] Base station 102, whether it is a small cell 102' or a large cell (e.g., a macro base station), can include and / or be referred to as an eNB, a gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, can operate in a traditional sub-6 GHz spectrum, millimeter wave frequencies, and / or near millimeter wave frequencies for communicating with UE 104. When gNB 180 operates in millimeter wave or near millimeter wave frequencies, gNB 180 can be referred to as a millimeter wave base station. The millimeter wave base station 180 can utilize beamforming 182 with UE 104 to compensate for path loss and short distances. Each of the base station 180 and UE 104 can include multiple antennas (e.g., antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0043] The base station 180 can transmit a beamformed signal to the UE 104 in one or more transmission directions 182'. The UE 104 can receive the beamformed signal from the base station 180 in one or more reception directions 182". The UE 104 can also transmit a beamformed signal to the base station 180 in one or more transmission directions. The base station 180 can receive the beamformed signal from the UE 104 in one or more reception directions. The base station 180 / UE 104 can perform beam training to determine the optimal reception and transmission directions for each of the base station 180 / UE 104. The transmission and reception directions for the base station 180 can be the same or not the same. The transmission and reception directions for the UE 104 can be the same or not the same.

[0044] The EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172. The MME 162 may communicate with a Home Subscriber Server (HSS) 174. The MME 162 is a control node that processes signaling between the UE 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the Serving Gateway 166, which is itself connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to an IP service 176. The IP service 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 may provide functions for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 168 may be used to distribute MBMS traffic to base stations 102 belonging to a Multicast Broadcast Single Frequency Network (MBSFN) area for a particular broadcast service, and may be responsible for session management (start / stop) and collecting charging information related to eMBMS.

[0045] The core network 190 may include an Access and Mobility Management Function (AMF) 192, other AMFs 193, a Session Management Function (SMF) 194, and a User Plane Function (UPF) 195. The AMF 192 may communicate with a Unified Data Management (UDM) 196. The AMF 192 is a control node that processes signaling between the UE 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to an IP service 197. The IP service 197 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) Streaming (PSS) service, and / or other IP services.

[0046] The base station may include and / or be referred to as a gNB, Node B, eNB, access point, transceiver base station, radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), transmission reception point (TRP), or some other suitable term. The base station 102 provides an access point for the UE 104 to the EPC 160 or the core network 190. Examples of the UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, gaming consoles, tablet computers, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some of the UEs 110 may be referred to as IoT devices (e.g., parking meters, air pumps, toasters, vehicles, heart monitors, etc.). The UEs 110 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, cell phones, user agents, mobile clients, clients, or some other suitable term.

[0047] Figure 2A FIG. 200 is an example showing a first subframe within a 5G NR frame structure. Figure 2B FIG. 230 is an example showing DL channels within a 5G NR subframe. Figure 2C FIG. 250 is an example showing a second subframe within a 5G NR frame structure. Figure 2D FIG. 280 is an example showing UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD), where for a specific set of subcarriers (carrier system bandwidth), the subframes within the set of subcarriers are dedicated to either DL or UL; or it may be time division duplex (TDD), where for a specific set of subcarriers (carrier system bandwidth), the subframes within the set of subcarriers are dedicated to both DL and UL. In Figure 2A 、 Figure 2CIn the provided example, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured to have slot format 28 (mostly DL), where D is DL, U is UL, and F is flexibly used between DL / UL, and subframe 3 is configured to have slot format 1 (all UL). Although subframes 3 and 4 are shown with slot formats 1 and 28 respectively, any particular subframe can be configured to have any one of the various available slot formats 0 - 61. Slot formats 0 and 1 are all DL and all UL respectively. The other slot formats 2 - 61 include a mixture of DL, UL, and flexible symbols. The UE is configured to have a slot format (dynamically via DL control information (DCI) or semi - statically / statically via radio resource control (RRC) signaling) by the received slot format indicator (SFI). Note that the following description also applies to the 5G NR frame structure as TDD.

[0048] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equally - sized subframes (1 ms). Each subframe can include one or more slots. A subframe can also include mini - slots, which can include 7, 4, or 2 symbols. Each slot can include 7 or 14 symbols, depending on the slot configuration. For slot configuration 0, each slot can include 14 symbols; and for slot configuration 1, each slot can include 7 symbols. The symbols on the DL can be cyclic prefix (CP) orthogonal frequency - division multiplexing (OFDM) (CP - OFDM) symbols. The symbols on the UL can be CP - OFDM symbols (for high - throughput scenarios) or discrete Fourier transform (DFT) - spread OFDM (DFT - s - OFDM) symbols (also known as single - carrier frequency - division multiple access (SC - FDMA) symbols) (for power - limited scenarios; limited to single - stream transmission). The number of slots within a subframe is based on the slot configuration and numerology. For slot configuration 0, different numerologies μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe respectively. For slot configuration 1, different numerologies 0 to 2 allow 2, 4, and 8 slots per subframe respectively. Thus, for slot configuration 0 and numerology μ, there are 14 symbols / slot and 2 μ slots / subframe. The sub - carrier spacing and symbol length / duration are functions of the numerology. The sub - carrier spacing can be equal to 2 μ * 15 kHz, where μ is the numerology from 0 to 4. Thus, the sub - carrier spacing for numerology μ = 0 is 15 kHz, and the sub - carrier spacing for numerology μ = 4 is 240 kHz. The symbol length / duration is negatively correlated with the sub - carrier spacing. Figures 2A - 2DAn example of slot configuration 0 (with 14 symbols per slot) and parameter set μ = 2 (with 4 slots per subframe) is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there can be one or more different bandwidth parts (BWPs) that are frequency division multiplexed (see Figure 2B ). Each BWP can have a specific parameter set.

[0049] A resource grid can be used to represent the frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) that spans 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0050] As Figure 2A shown, some of the REs carry reference (pilot) signals (RSs) for the UE. The RSs can include demodulation RSs (DM-RSs) (denoted as R for one particular configuration, but other DM-RS configurations are possible), as well as channel state information reference signals (CSI-RSs) for channel estimation at the UE. The RSs can also include beam measurement RSs (BRSs), beam refinement RSs (BRRSs), and phase tracking RSs (PT-RSs).

[0051] Figure 2BShows an example of various DL channels within a subframe of a frame. The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six Resource Element Groups (REGs), and each REG including 12 consecutive Resource Elements (REs) within an OFDM symbol of an RB. The PDCCH within a BWP can be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during a PDCCH monitoring occasion on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can be located at higher and / or lower frequencies across the channel bandwidth. The Primary Synchronization Signal (PSS) can be within symbol 2 of a specific subframe of a frame. The UE 104 uses the PSS to determine subframe / symbol timing and the physical layer identity. The Secondary Synchronization Signal (SSS) can be within symbol 4 of a specific subframe of a frame. The UE uses the SSS to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the above-mentioned DM-RS. The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) can be logically grouped with the PSS and the SSS to form a Synchronization Signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not sent via the PBCH (e.g., System Information Block (SIB)), and paging messages.

[0052] As Figure 2C shown, some of the REs carry DM-RS for channel estimation at the base station (denoted as R for a specific configuration, but other DM-RS configurations are also possible). The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be transmitted in the previous one or two symbols of the PUSCH. The PUCCH DM-RS can be transmitted in different configurations, depending on whether a short or long PUCCH is being transmitted and depending on the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0053] Figure 2D FIG. 1 shows an example of various UL channels within a subframe of a frame. The PUCCH can be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), e.g., a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) information (ACK / negative ACK (NACK)) feedback. The PUSCH carries data and can additionally be used to carry a buffer status report (BSR), a power headroom report, and / or UCI.

[0054] Figure 3 FIG. 2 is a block diagram of a base station 310 communicating with a UE 350 in an access network. In the DL, IP packets from the EPC 160 can be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functions. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a media access control (MAC) layer. The controller / processor 375 provides RCC functions associated with the broadcast of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with the transfer of upper layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and re-ordering of RLC data PDUs; and MAC layer functions associated with the mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0055] The transmit (TX) processor 316 and the receive (RX) processor 370 implement the layer 1 functions associated with various signal processing functions. Layer 1, which includes the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then combined using an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a stream of time-domain OFDM symbols. The OFDM stream is precoded in space to generate multiple spatial streams. Channel estimates from the channel estimator 374 can be used to determine the encoding and modulation schemes, as well as for spatial processing. The channel estimates can be derived based on reference signals transmitted by the UE 350 and / or channel status feedback. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can modulate an RF carrier with the corresponding spatial stream for transmission.

[0056] At the UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement the layer 1 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a fast Fourier transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency-domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, as well as the reference signals, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions can be based on the channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functions.

[0057] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error correction using the ACK and / or NACK protocols to support HARQ operations.

[0058] Similar to the functions described in connection with DL transmissions performed by the base station 310, the controller / processor 359 provides RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with the transfer of upper layer PDUs, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0059] Channel estimates derived by the channel estimator 358 based on reference signals or feedback transmitted by the base station 310 may be used by the TX processor 368 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via a separate transmitter 354TX. Each transmitter 354TX may modulate an RF carrier using a corresponding spatial stream for transmission.

[0060] UL transmissions are processed at the base station 310 in a manner similar to that described in connection with the receiver functions at the UE 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0061] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing, to recover IP packets from the UE 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0062] At least one of TX processor 368, RX processor 356, and controller / processor 359 may be configured to perform aspects of the TBS determination component 198 in connection with Figure 1 .

[0063] Figure 4 is an example representation of a multi-slot PUSCH 400 for uplink transmission by a UE ( Figure 1 example UE 104 and / or Figure 3 UE 350). In some examples, each time slot may include the same or similar time-domain resources. For example, in 5G NR, repeated transmission of PUSCH on consecutive time slots (e.g., via time slot repetition, aggregation, multi-slot PUSCH) may be supported to increase, for example, the SNR for transmission reliability. For example, the MCS and resource allocation may be indicated in the scheduling DCI and may be common across consecutive time slots. Additionally, the number of time slots may be radio resource control (RRC) configured (e.g., 2 time slots, 4 time slots, or 8 time slots) and may be common for each scheduling (e.g., there may be no difference between a new transmission or a retransmission).

[0064] For each time slot of the multi-slot PUSCH 400, the transport block (TB) may be the same, but the coded bits may be different such that the redundancy version (RV) of each time slot is different. For example, the RV of the first time slot may be indicated in the scheduling DCI, while the RV of another time slot (n) may be determined by "n mod 4". In Figure 4 the example shown, example RVs on the time slots for a new transmission of a 4-slot PDSCH may include RV0, RV2, RV3, and RV1. Another example RV on the time slots for a new retransmission of a 4-slot PDSCH may include RV3, RV1, RV0, and RV2. Additionally, PUSCH repetition may be applied to coverage-limited scenarios.

[0065] Example multi-slot PUSCH 400 includes 4-slot PUSCH 410. In Figure 4 the example shown, 4-slot PUSCH 410 is implemented via a single time slot TTI. However, other examples may include, for example, 4-slot TTI or 2-slot TTI. For multi-slot PUSCH with TBS scaled by an integer (e.g., 2 or 4) or MCS scaled by an integer, the transmission performance may be similar to that of a multi-slot TTI (sometimes referred to as a "super time slot").

[0066] In some examples, the transport block size (TBS) may be determined using the PUSCH resources of a single time slot, even for multi-slot PUSCH (e.g., PUSCH repetition). For example, it may be based onFigure 4 to determine the TBS from the first time slot 412. Additionally, the code rate (R) and modulation order (Q m ) indicated by the MCS can be used to determine the TB size for transmission. For example, Equation 1 (below) can be used to determine the TB size for transmission.

[0067] Equation 1: TBS + L CRC ≈ N RE *R*Q m

[0068] In Equation 1, the parameter "TBS" refers to the TB size for transmission, the parameter "L CRC " refers to the number of cyclic redundancy check (CRC) bits, the parameter "N RE " refers to the total number of data REs of the PUSCH in a single time slot (e.g., time slot 412), the parameter "R" refers to the code rate indicated by the MCS associated with time slot 412, and the parameter "Q m " refers to the modulation order indicated by the MCS associated with time slot 412. However, this calculation of the TBS may result in a very low effective code rate (R ef f ,multi-slot ) for the multi-time slot PUSCH. In some examples, Equation 2 (below) can be used to determine the effective code rate for the multi-time slot PUSCH.

[0069] Equation 2: R eff,mult-slot = R / M

[0070] In Equation 2, the term "R eff,multi-slot " refers to the effective code rate for the multi-time slot PUSCH, the term "R" refers to the code rate, and the term "M" refers to the number of time slots.

[0071] However, for the scenario where the uplink coverage is limited, the transmission power of the UE may be the bottleneck reason. Additionally, further reducing the already low effective code rate may be harmful to transmission reliability and may also cost more resources and / or bandwidth. For example, for an uplink transmission with limited power, doubling the bandwidth can be associated with halving the effective code rate (R eff / 2) and reducing the power spectral density (PSD) by 3 decibels (dB). Therefore, the SNR may be reduced by 3 dB. However, although it can be assumed that the combined gain of the halved effective code rate (R eff / 2) is 3 dB, the channel estimation loss caused by the lower SNR may result in a gain of less than 3 dB and may not be able to compensate for the SNR loss. Therefore, it may be beneficial to determine the TB size through the PUSCH resources over multiple time slots (sometimes referred to as "TBS scaling").

[0072] In some examples, the TB size can be determined by first calculating the number of data REs per PRB and per time slot (N′ RE ). For example, Equation 3 (below) can be used to calculate the number of data REs per PRB and per time slot (N′ RE ).

[0073] Equation 3:

[0074] In Equation 3, the parameter refers to the number of symbols, the parameter refers to the number of DMRS REs, and the parameter refers to the semi-static overhead. The semi-static overhead may be caused by, for example, broadcast information. In the example Equation 3, the number of symbols is multiplied by the term "12" because there are 12 REs per PRB.

[0075] After calculating the number of data REs per PRB and per time slot (N′ RE ), Equation 4 (below) can be used to calculate the total number of REs (N RE ).

[0076] Equation 4: N RE = min(156, N′ RE ) * n PRB

[0077] In Equation 4, the parameter "N′ RE " refers to the number of data REs per PRB and per time slot, and the term "n PRB " refers to the total number of PRBs. As shown in Equation 4, the total number of REs (N PRB ) can be calculated by multiplying the total number of PRBs (n RE ) by the minimum of the value "156" and the number of data REs per PRB and per time slot (N′ RE ). Therefore, the total number of REs (N RE ) refers to the total number of REs per time slot.

[0078] The total number of REs (N RE ) can be used to calculate an intermediate value (N info ). For example, Equation 5 (below) can be used to calculate the intermediate value (N info ).

[0079] Equation 5: N info = N RE * R * Q m * v

[0080] In Equation 5, the term "N REThe term “ m ” refers to the total number of REs, the term “R RE ” refers to the code rate associated with the indicated MCS, the term “Q

[0081] ” refers to the modulation order associated with the indicated MCS, and the term “vN info ” refers to the total number of MIMO layers. info ” can be used as the quantization value of the intermediate value (N info ). In some such examples, the TB size may be an integer multiple of the term “8”.

[0082] For some types of downlink transmissions (e.g., broadcast PDSCH, e.g., paging transmission, Msg2 transmission associated with a 4-step random access procedure, or MsgB transmission associated with a 2-step random access procedure), a scaling factor (S) can be indicated in the scheduling DCI. In some such examples, the scaling factor (S) can be less than 1 (S < 1), and can be used to adjust the TB size. For example, for downlink transmissions, transmission power may not be a concern, and thus, the TBS scaling for downlink transmissions can correspond to shrinking. That is, a lower code rate will correspond to increased transmission reliability. For example, Equation 6 (below) can be used to perform TBS scaling for downlink transmissions.

[0083] Equation 6: N info = S * N RE * R * Q m * v

[0084] In Equation 6, the term “S” refers to the scaling factor for TBS scaling for downlink transmissions, the term “N RE ” refers to the total number of REs, the term “R” refers to the code rate associated with the indicated MCS, the term “Q m ” refers to the modulation order associated with the indicated MCS, and the term “vN in fo ” refers to the total number of MIMO layers. Based on Equation 6, the TB size can be adjusted by scaling the intermediate value (N info ) by the scaling factor (S).

[0085] Table 1 below shows example TBS scaling field values mapped to corresponding scaling factor (S) values. The TBS scaling field values can be indicated via the scheduling DCI.

[0086] TBS Scaling Field Scaling Factor (S) 00 1 01 0.5 10 0.25 11 N / A

[0087] Table 1

[0088] In some examples, the uplink scaling factor (M) can be indicated in the scheduling DCI. In some such examples, the uplink scaling factor (M) can be greater than 1 (M>1), and can be used to adjust the TB size for amplification for the PUSCH. For example, Equation 7 (below) can be used to perform TBS scaling for PUSCH transmission.

[0089] Equation 7: N info = M * N RE * R * Q m * v

[0090] In Equation 7, the term "M" refers to the uplink scaling factor for TBS scaling for PUSCH transmission, the term "N" RE " refers to the total number of REs, the term "R" refers to the code rate associated with the indicated MCS, the term "Q" m " refers to the modulation order associated with the indicated MCS, and the term "v" refers to the total number of MIMO layers. Based on Equation 7, the TB size can be adjusted by scaling up the intermediate value (N) info by the scaling factor (M).

[0091] Table 2 below shows example TBS scaling field values mapped to corresponding uplink scaling factor (M) values. The TBS scaling field values can be indicated via the scheduling DCI.

[0092] TBS Scaling Field Uplink Scaling Factor (M) 00 1 01 2 10 4 11 8

[0093] Table 2

[0094] Although Example Tables 1 and 2 respectively provide certain mappings between TBS scaling field values and scaling factor (S, M) values, the examples are illustrative only. That is, other examples can include additional or alternative mappings between TBS scaling field values and scaling factors.

[0095] As described above, the TB size determination can be based on the number of data REs in a time slot. However, in some examples, the number of DMRSs on a time slot can be different (e.g., non-uniform distribution of DMRSs on a time slot), and thus, different numbers of data REs can be associated with each time slot. Figure 5 An example timing diagram 500 including a first time slot 510 and a second time slot 520 is shown. As Figure 5 shown, the first time slot 510 includes two DMRS REs, and the second time slot 520 includes zero DMRS REs. However, it can be understood that in other examples, the amount of DMRS REs included in the second time slot 520 can be greater than or equal to the amount of DMRS REs included in the first time slot 510.

[0096] Since the number of data REs in each time slot may be different (e.g., the number of data REs in the first time slot 510 is different from the number of data REs in the second time slot 520), it may be inappropriate to perform TBS scaling using the uplink scaling factor (M).

[0097] The example techniques disclosed herein facilitate performing TBS determination for non-uniform DMRS distributions. For example, a UE may determine the number of data REs per PRB and per M single repetitions (N″ RE ) may be associated with a duration longer than 14 symbols. Additionally, in some examples, different overheads may be configured for the UE to apply to determine the TBS for a set of PUSCH repetitions rather than a single repetition. It can be understood that the term "single repetition" may apply to repetition type A and / or repetition type B. When referring to repetition type A, the UE may use consecutive available time slots to send PUSCH transmissions in one or more repetitions using back-to-back (e.g., consecutive) symbols (e.g., M symbols). When referring to repetition type B, the UE may use back-to-back (e.g., consecutive) symbols across time slots (e.g., M nominal repetitions) to send PUSCH transmissions.

[0098] Figure 6A An example multi-time slot PUSCH 600 including PUSCH repetition type A is shown. In Figure 6A the example shown, the first repetition (Rep#0) is configured for the last four symbols of the first time slot n, and the second repetition (Rep#1) is configured for the last four symbols of the second time slot n+1. As Figure 6A shown, a large time gap may occur between the repetitions (e.g., due to the symbols between the end of the first repetition (Rep#0) and the start of the second repetition (Rep#1)).

[0099] Figure 6B An example multi-time slot PUSCH 650 including PUSCH repetition type B is shown. In Figure 6B the example shown, the first repetition (Rep#0) is configured for the last four symbols of the first time slot n, and the second repetition (Rep#1) is configured for the first four symbols of the second time slot n+1. As Figure 6B shown, the repetitions are configured to eliminate the time gap between the repetitions and ensure the configured number of repetitions within the time constraint, since the repetitions are performed in consecutive mini-slots and one time slot may contain more than one repetition of the transport block. Figure 6BThe number of nominal repetitions (K) (e.g., K = 2) in the example can be indicated using DCI. Additionally, the time-domain resource allocation (TDRA) of the first nominal repetition can be indicated in the DCI as the starting symbol (S) and the symbol length (L) (e.g., S = 10 and L = 4). The nominal repetition can be segmented into multiple actual repetitions based on conditions such as around the slot boundary, around the semi-statically configured downlink (D), or invalid symbols. The redundancy value (RV) of the nth actual repetition can be determined by "n mod 4". In some examples, the TBS can be determined by the first nominal transmission based on the nominal symbol length (L).

[0100] As described above, after the UE calculates the number of data REs per PRB and per single repetition (N″ RE ), the UE can calculate the total number of REs (N RE ). For example, the UE can use Equation 8 (below) to calculate the number of REs (N RE ) allocated to the PUSCH.

[0101] Equation 8: N RE = min(156 * M, N″ RE ) * n PRB

[0102] In Equation 8, the parameter "M" refers to the nominal repetition for PUSCH repetition type B or the slot for PUSCH repetition type A, the parameter "N″ RE " refers to the number of data REs per PRB and per M single repetitions (e.g., per M nominal repetitions for PUSCH repetition type B or per M slots for PUSCH repetition type A), and the term "n PRB " refers to the total number of PRBs. As shown in Equation 8, the total number of REs (N PRB ) can be calculated by multiplying the total number of PRBs (n RE ) by the minimum of the value "156 * M" and the number of REs per PRB and per M single repetitions (N″ RE ). Therefore, the total number of REs (N RE ) refers to the total number of REs per slot. In Example Equations 4 and 8 (above), the value "156" refers to the maximum average number of REs per slot and per PRB. However, other examples may include alternative values. Regarding Equations 4 and 8 (above), Equation 4 applies to a single slot, and Equation 8 applies to multiple slots.

[0103] Accordingly, the UE can determine the transport block size (TBS) for PUSCH transmission at least partially based on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission over a repetition unit including a plurality of single repetitions (e.g., a plurality of time slots when applying PUSCH repetition type A or a plurality of nominal repetitions when applying PUSCH repetition type B). The TBS can be based on different numbers of data resource elements (REs) in different time slots among the plurality of time slots or nominal repetitions. In some examples, the UE can use the determined TBS to send PUSCH repetitions over a repetition unit including a plurality of single repetitions. In some examples, the UE applies different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH repetition. In some examples, the UE can determine the total number of resource elements (N RE ) based on which the TBS is determined, and the total number of resource elements (N RE ) is based on the maximum average number of REs per time slot. In some examples, the UE can determine the total number of REs (N RE ) based on the minimum of the following: the maximum average number of REs per time slot multiplied by the number of single repetitions, and the number of REs per physical resource block (PRB) over the plurality of single repetitions (N″ RE ). In some examples, the number of REs per PRB can be greater than 14 symbols. In some examples, the PUSCH repetitions using the determined TBS can be based on at least one of the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, and / or the maximum modulation order (e.g., QPSK).

[0104] In some examples, the uplink scaling factor (M) can be dynamically indicated by the base station, for example. The example techniques disclosed herein facilitate DCI indication for TBS scaling for multi-time-slot PUSCH via the TDRA field of the scheduling DCI. For example, the TDRA field can include a PUSCH list for a plurality of PUSCH transmissions. In some examples, the PUSCH list can include a tuple that includes one or more of the PDCCH-to-PUSCH time slot offset (k2), mapping type, starting symbol (S), symbol length (L), and / or the number of single repetitions (e.g., M time slots for PUSCH repetition type A or M nominal repetitions for PUSCH repetition type B).

[0105] Thus, the UE can implement dynamic indication of M by receiving scheduling DCI that indicates, in the TDRA field, the scaling parameter (M) for the TBS of a PUSCH transmission that is to be transmitted as a PUSCH repetition over a repetition unit that includes multiple single repetitions (e.g., M time slots for PUSCH repetition type A or M nominal repetitions for PUSCH repetition type B). The UE can also send the PUSCH repetition with scaling based on the scaling parameter indicated in the scheduling DCI. In some examples, the TDRA field includes a PUSCH list for multiple PUSCH transmissions. In some examples, the PUSCH list can include the number of time slots determined for the TBS of each PUSCH transmission of the multiple PUSCH transmissions. In some examples, the PUSCH list can further include one or more of the PDCCH to PUSCH time slot offset (k2), mapping type, starting symbol, symbol length, and / or the number of nominal repetitions for the repetition. In some examples, the starting symbol and symbol length can be provided via different (e.g., separate) parameters in the PUSCH list. In some examples, when the TDRA field is applied to PUSCH repetition type A, the PUSCH list can include the number of time slots. In some examples, when the TDRA field is applied to PUSCH repetition type B, the PUSCH list can include the number of time slots (N) for the repetition or the number of time slots (M) determined for the TBS.

[0106] In some examples, the scaling parameter can be applied to PUSCH repetition type A that has time slots for PUSCH repetition. In some examples, the scaling parameter can be applied to PUSCH repetition type B that has consecutive symbols for PUSCH repetition. In some examples, the TBS of the PUSCH transmission can be based on at least one of the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, and / or the maximum modulation order (e.g., QPSK).

[0107] It can be understood that TBS amplification can increase the use of processing resources at the base station (e.g., for receiving the PUSCH transmission) and at the UE (e.g., for sending the PUSCH transmission). Thus, the example techniques disclosed herein provide limitations on when TBS scaling can be applied to a multi-time slot PUSCH. For example, the disclosed techniques can determine the TBS of the PUSCH transmission based on one of the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, and / or the maximum modulation order (e.g., QPSK).

[0108] In some examples, when the PUSCH and PUCCH are partially overlapped, UCI multiplexing on the PUSCH can be achieved. Other examples include directly scheduling an aperiodic CSI report on the PUSCH, where the UCI may not be associated with the PUCCH. That is, the aperiodic CSI report can be triggered on a multi-slot PUSCH, where the UCI can be multiplexed on the transmission of the first slot of the multi-slot PUSCH. Therefore, in some examples, the aperiodic CSI can be multiplexed on the first slot of the PUSCH. In some examples, the aperiodic CSI can be repeated over N slots, where the parameter "N" refers to the number of repetitions.

[0109] However, when TBS amplification for PUSCH transmission is performed on M single repetitions and the number of single repetitions (M) is less than or equal to the number of repetitions (N) (e.g., N>M), the example techniques can send the aperiodic CSI on the first M single repetitions. In some examples, the aperiodic CSI can be extended on the first M single repetitions among the N repetitions. In some examples, the aperiodic CSI can be repeated M times on the first M single repetitions among the N repetitions.

[0110] Therefore, the UE can determine the TBS of the PUSCH transmission at least partially based on a set of PUSCH resources, where the set of PUSCH resources corresponds to a set of PUSCH repetitions for transmission on a repetition unit including multiple single repetitions (e.g., multiple slots when the UE applies PUSCH repetition type A, or multiple nominal repetitions when the UE applies PUSCH repetition type B). The UE can also multiplex the UCI with multiple repetitions of the PUSCH transmission to transmit as PUSCH repetitions on a repetition unit including multiple single repetitions (M). Additionally, the UE can send PUSCH repetitions and multiplexed UCI on multiple repetitions.

[0111] In some examples, the UCI can include an aperiodic CSI. In some examples, the UE can extend the UCI over multiple single repetitions (M) that start from the first repetition among the multiple repetitions (N). In some examples, the UE can repeat the UCI in each of the multiple single repetitions (M) that start from the first repetition among the multiple repetitions (N).

[0112] Figure 7 An example communication flow 700 between the base station 702 and the UE 704 as presented herein is shown. In the example shown, the communication flow 700 facilitates the UE 704 to use multiple time intervals of slots to improve uplink data channel (PUSCH) repetitions. Aspects of the base station 702 can be performed by Figure 1 the base station 102 / 180 of Figure 3 the base station 310 ofFigure 4 The base station 402 and / or Figure 5 The base station 502 is implemented. Aspects of the UE 704 may be implemented by Figure 1 The UE 104 of Figure 3 The UE 350 of Figure 4 The UE 404 of Figure 5 The UE 504 and / or the UE 604 of FIG. 6. Although not shown in the Figure 7 Illustrated example shown, it can be understood that in additional or alternative examples, the base station 702 may communicate with one or more other base stations or UEs, and / or the UE 704 may communicate with one or more other base stations or UEs.

[0113] In the illustrated example, the base station 702 transmits scheduling DCI 710 that may be received by the UE 704.

[0114] At 720, the UE 704 may determine the TBS for PUSCH transmission. In some examples, at 720, the UE 704 may determine the TBS for PUSCH transmission based on at least one of the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, and / or the maximum modulation order (e.g., QPSK).

[0115] The UE 704 transmits PUSCH repetition 740 that may be received by the base station 702.

[0116] In some examples, the scheduling DCI 710 may indicate a scaling parameter for the TBS of a PUSCH transmission that is to be transmitted as a PUSCH repetition 740 over a repetition unit that includes multiple single repetitions (e.g., M time slots when PUSCH repetition type A is applied or M nominal repetitions when PUSCH repetition type B is applied). The scheduling DCI 710 may use the TDRA field 712 to indicate the scaling parameter (M). In some examples, the TDRA field 712 may include a PUSCH list for multiple PUSCH transmissions. In some examples, the PUSCH list may include the number of time slots used for TBS determination for each PUSCH transmission of the multiple PUSCH transmissions. In some examples, the PUSCH list may further include one or more of the PDCCH-to-PUSCH time slot offset (k2), mapping type, starting symbol, symbol length, and / or the number of nominal repetitions for the repetition. In some examples, the starting symbol and symbol length may be provided via different (e.g., separate) parameters in the PUSCH list. In some examples, when the TDRA field 712 is applied to PUSCH repetition type A, the PUSCH list may include the number of time slots. In some examples, when the TDRA field 712 is applied to PUSCH repetition type B, the PUSCH list may include the number of time slots for the repetition or the number of time slots used for TBS determination.

[0117] In some examples, the scaling parameter (M) may be applied to PUSCH repetition type A that has time slots for PUSCH repetition. In some examples, the scaling parameter (M) may be applied to PUSCH repetition type B that has consecutive symbols for PUSCH repetition.

[0118] In some examples, at 720, the UE 704 may determine the TBS based on the scaling parameter (M) (e.g., received via the scheduling DCI 710). The PUSCH repetition 740 may include a scaling based on the scaling parameter (M) indicated in the scheduling DCI 710.

[0119] In some examples, at 720, the UE 704 may determine the TBS at least in part based on a set of PUSCH resources that corresponds to a set of PUSCH repetitions for transmission over a repetition unit that includes multiple repetitions. For example, the TBS may be based on different numbers of data REs in different time slots of multiple single repetitions (e.g., multiple time slots or multiple nominal repetitions). In some examples, the UE 704 may apply different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH repetition. In some examples, the UE 704 may be based on the total number of resource elements (N RE) to determine the TBS, the total number of resource elements (N RE ) is based on the maximum average number of REs per time slot. In some examples, UE 704 may determine the total number of REs (N RE ) based on the minimum of: the maximum average number of REs per time slot multiplied by the number of multiple single repetitions, and the number of REs per PRB (N″ RE ) over the multiple single repetitions. In some examples, the number of REs per PRB may be greater than 14 symbols. In some examples, UE 704 may use the determined TBS to transmit PUSCH repetitions 740 over a repetition unit including multiple single repetitions.

[0120] In some examples, at 730, UE 704 may multiplex UCI with multiple repetitions of PUSCH transmission. For example, UE 704 may multiplex UCI with multiple repetitions of PUSCH transmission to transmit as PUSCH repetitions over a repetition unit including multiple single repetitions (M). Additionally, UE 704 may transmit PUSCH repetitions 740 and multiplexed UCI over multiple repetitions (N).

[0121] In some examples, the UCI may include aperiodic CSI. In some examples, UE 704 may spread the UCI over multiple single repetitions (M) that start from the first repetition among multiple repetitions (N). In some examples, UE 704 may repeat the UCI in each of the multiple single repetitions (M) that start from the first repetition among multiple repetitions (N).

[0122] Figures 8 to 10 is a flowchart of a method for wireless communication. Figures 8 to 10 The method may be performed by a UE (e.g., UE104; apparatus 1102). Optional aspects are shown with dashed lines. Figures 8 to 10 The method may facilitate the use of multi-time slot TTIs to improve the use of uplink data channel (PUSCH) repetitions.

[0123] Figure 8 is a flowchart 800 of a method for wireless communication employing dynamic indication of multiple time slots (M).

[0124] At 802, the UE receives scheduling DCI that indicates a scaling parameter for the TBS for PUSCH transmission for transmission as PUSCH repetitions over a repetition unit including multiple single repetitions, as described in conjunction with Figure 7 scheduling DCI 710. For example, it may be by Figure 11The scheduling DCI component 1140 of the apparatus 1102 performs reception of the scheduling DCI. When PUSCH repetition type A is applied, a single repetition may correspond to multiple time slots (e.g., M time slots), or when PUSCH repetition type B is applied, a single repetition may correspond to multiple nominal repetitions (e.g., M nominal repetitions).

[0125] The scheduling DCI may indicate a scaling parameter in the TDRA field, as described in connection with Figure 7 the TDRA field 712. In some examples, the TDRA field may include a PUSCH list for multiple PUSCH transmissions. In some examples, the PUSCH list may include the number of time slots for TBS determination for each PUSCH transmission among multiple PUSCH transmissions. The PUSCH list may also include one or more of the PDCCH to PUSCH time slot offset (k2), mapping type, starting symbol, symbol length, and / or the number of single repetitions for repetition (e.g., the number of time slots or the number of nominal repetitions).

[0126] In some examples, the scaling parameter (M) may be applied to PUSCH repetition type A having time slots for PUSCH repetition, as described in connection with Figure 6A In some examples, the scaling parameter (M) may be applied to PUSCH repetition type B having consecutive symbols for PUSCH repetition, as described in connection with Figure 6B In some examples, the scaling parameter (M) may be applied to PUSCH repetition type B having consecutive symbols for PUSCH repetition, as described in connection with

[0127] At 804, the UE transmits PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI, as described in connection with Figure 7 the PUSCH repetition 740. For example, the apparatus 1102's scaling parameter transmission component 1142 may perform transmitting PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI. In some examples, the TBS of the PUSCH transmission may be based on at least one of the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, or the maximum modulation order. Figure 11 the PUSCH repetition 740. For example, the apparatus 1102's scaling parameter transmission component 1142 may perform transmitting PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI. In some examples, the TBS of the PUSCH transmission may be based on at least one of the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

[0128] Figure 9 is a flowchart 900 of a method of wireless communication employing TBS determination for non-uniform DMRS, as described in connection with Figure 5 In some examples, the scaling parameter (M) may be applied to PUSCH repetition type B having consecutive symbols for PUSCH repetition, as described in connection with

[0129] At 902, the UE determines the TBS of the PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including multiple single repetitions, as described in connection with Figure 7 the 720. For example, it may be performed byFigure 11 The TBS determination component 1144 of the apparatus 1102 performs determining a TBS for a PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit comprising a plurality of single repetitions.

[0130] In some examples, the UE may determine the TBS based on different amounts of data REs associated with different time slots, e.g., in combination with Figure 5 In some examples, the UE may apply different overhead configurations To determine the TBS for a set of PUSCH repetitions rather than for a single PUSCH transmission. In some examples, the UE may determine the TBS based on the total number of REs (N RE ) to determine TBS, the total number of REs (N RE ) is based on the maximum average number of REs per time slot. In some examples, the UE may determine the total number of REs (N) based on the minimum of the following: RE ): (1) the maximum average number of REs per time slot multiplied by the number of multiple single repetitions, and (2) the number of REs per PRB over the multiple single repetitions (N″) RE ). In some examples, the number of REs per PRB can be greater than 14 symbols.

[0131] At 904, the UE uses the determined TBS to send a PUSCH repetition on a repetition unit including multiple single repetitions, such as in combination with Figure 7 The PUSCH is repeated as described in 740. For example, Figure 11 The overhead symbol transmission component 1146 of the device 1102 performs sending PUSCH repetitions on a repetition unit including multiple single repetitions using the determined TBS. In some examples, the PUSCH transmission using the determined TBS can be based on at least one of a maximum number of PRBs, a maximum number of time slots, a maximum number of symbols, or a maximum modulation order.

[0132] Figure 10 is a flow chart 1000 of a method of wireless communication employing multiplexing of UCI.

[0133] At 1002, the UE determines a TBS for a PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions, as combined with Figure 7 As described in 720. For example, Figure 11The TBS determination component 1144 of the apparatus 1102 determines the TBS of the PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions.

[0134] At 1004, the UE multiplexes the UCI with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions, as described in conjunction with Figure 7 730. For example, multiplexing of the UCI with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions can be performed by Figure 11 the UCI multiplexing component 1148 of the apparatus 1102.

[0135] In some examples, the UCI can include aperiodic CSI. In some examples, the UE can spread the UCI over a plurality of single repetitions (M) starting from the first repetition in a plurality of repetitions (N). In some examples, the UE can repeat the UCI in each of the plurality of single repetitions (M) starting from the first repetition in a plurality of repetitions (N).

[0136] At 1006, the UE transmits PUSCH repetitions and multiplexed UCI over multiple repetitions, as described in conjunction with Figure 7 the PUSCH repetition 740. For example, transmitting PUSCH repetitions and multiplexed UCI over multiple repetitions can be performed by Figure 11 the multiplexed transmission component 1150 of the apparatus 1102. In some examples, the PUSCH transmission using the determined TBS can be based on at least one of a maximum number of PRBs, a maximum number of time slots, a maximum number of symbols, or a maximum modulation order.

[0137] Figure 11FIG. 1100 is an example showing a hardware implementation for apparatus 1102. Apparatus 1102 is a UE and includes a cellular baseband processor 1104 (also referred to as a modem) coupled to a cellular RF transceiver 1122 and one or more subscriber identity module (SIM) cards 1120, an application processor 1106 coupled to a secure digital (SD) card 1108 and a screen 1110, a Bluetooth module 1112, a wireless local area network (WLAN) module 1114, a global positioning system (GPS) module 1116, and a power supply 1118. The cellular baseband processor 1104 communicates with UE 104 and / or base station 102 / 180 via the cellular RF transceiver 1122. The cellular baseband processor 1104 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 1104 is responsible for general processing, including executing software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1104, causes the cellular baseband processor 1104 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1104 when executing the software. The cellular baseband processor 1104 further includes a receiving component 1130, a communication manager 1132, and a transmitting component 1134. The communication manager 1132 includes one or more of the illustrated components. The components within the communication manager 1132 may be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1104. The cellular baseband processor 1104 may be a component of UE 350 and may include at least one of a memory 360 and / or a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, apparatus 1102 may be a modem chip and include only the baseband processor 1104; and in another configuration, apparatus 1102 may be an entire UE (e.g., see Figure 3 UE 350) of FIG. and include the foregoing additional modules of apparatus 1102.

[0138] The communication manager 1132 includes a scheduling DCI component 1140 configured to receive scheduling DCI, e.g., as described in conjunction with Figure 8 802 of FIG. The communication manager 1132 further includes a scaling parameter transmission component 1142 configured to transmit PUSCH repetitions using scaling based on the scaling parameter indicated in the scheduling DCI, e.g., as described in conjunction with Figure 8 804 of FIG. The communication manager 1132 further includes a TBS determination component 1144 configured to determine the TBS of a PUSCH transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions, e.g., as described in conjunction withFigure 9 of 902 and / or Figure 10 as described by 1002 of. The communication manager 1132 also includes an overhead symbol transmission component 1146, which is configured to use the determined TBS to send PUSCH repetitions on a repetition unit including a plurality of single repetitions, for example, as combined with Figure 9 of 904. The communication manager 1132 also includes a UCI multiplexing component 1148, which is configured to multiplex UCI with multiple repetitions of PUSCH transmission to be transmitted as PUSCH repetitions on a repetition unit including a plurality of single repetitions, for example, as combined with Figure 10 of 1004. The communication manager 1132 also includes a multiplexed transmission component 1150, which is configured to send PUSCH repetitions and multiplexed UCI on multiple repetitions, for example, as combined with Figure 10 of 1006.

[0139] The apparatus may include additional components that execute each block in the algorithm of the above flowchart of Figures 8 to 10 . Thus, Figures 8 to 10 each block in the above flowchart of can be executed by a component, and the apparatus may include one or more of these components. These components may be one or more hardware components, which are specifically configured to execute the described process / algorithm, implemented by a processor configured to execute the described process / algorithm, stored in a computer-readable medium for processor implementation, or some combination thereof.

[0140] In one configuration, the apparatus 1102 (and particularly the cellular baseband processor 1104) includes a unit for receiving scheduling downlink control information (DCI), which indicates a scaling parameter of the transport block size (TBS) for a physical uplink shared channel (PUSCH) transmission in a time domain resource allocation (TDRA) field, and the PUSCH transmission is for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions. The exemplary apparatus 1102 also includes a unit for sending PUSCH repetitions using scaling based on the scaling parameter indicated in the scheduling DCI.

[0141] In another configuration, the exemplary apparatus 1102 includes a unit for determining the transport block size (TBS) of a PUSCH transmission at least partially based on a set of physical uplink shared channel (PUSCH) resources, and the set of PUSCH resources corresponds to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions. The exemplary apparatus 1102 also includes a unit for sending PUSCH repetitions on a repetition unit including a plurality of single repetitions using the determined TBS.

[0142] In another configuration, example apparatus 1102 includes units for determining a transport block size (TBS) of a PUSCH transmission based at least in part on a set of physical uplink shared channel (PUSCH) resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions. Example apparatus 1102 further includes a unit for multiplexing uplink control information (UCI) with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions. Example apparatus 1102 further includes a unit for transmitting the PUSCH repetitions and the multiplexed UCI over multiple repetitions.

[0143] The foregoing units may be one or more of the foregoing components of apparatus 1102 configured to perform the functions described by the foregoing units. As described above, apparatus 1102 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the foregoing units may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions described by the foregoing units.

[0144] The following examples are illustrative only and may be combined with other embodiments or aspects of the teachings described herein without limitation.

[0145] Example 1 is a method for wireless communication of a UE, including: receiving scheduling DCI that indicates, in a TDRA field, a scaling parameter for a TBS of a PUSCH transmission, the PUSCH transmission for transmission as a PUSCH repetition on a repetition unit including a plurality of single repetitions; and transmitting the PUSCH repetition with scaling based on the scaling parameter indicated in the scheduling DCI.

[0146] In Example 2, the method of Example 1 further includes: the TDRA field includes a PUSCH list for a plurality of PUSCH transmissions, the PUSCH list including the number of time slots for TBS determination for each of the plurality of PUSCH transmissions.

[0147] In Example 3, the method of any one of Example 1 or Example 2 further includes: the PUSCH list further includes one or more of the following: a PDCCH to PUSCH time slot offset, a mapping type, a start symbol, a symbol length, or the number of single repetitions for a repetition.

[0148] In Example 4, the method of any one of Examples 1 to 3 further includes: the scaling parameter is applied to a PUSCH repetition type having a time slot for the PUSCH repetition.

[0149] In Example 5, the method of any one of Examples 1 to 4 further includes: applying the scaling parameter to a PUSCH repetition type having consecutive symbols for the PUSCH repetition.

[0150] In Example 6, the method of any one of Examples 1 to 5 further includes: the TBS of the PUSCH transmission is based on at least one of the following: the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

[0151] Example 7 is a device, including one or more processors and one or more memories in electronic communication with the one or more processors, the memories storing instructions executable by the one or more processors to enable a system or apparatus to implement the method of any one of Examples 1 to 6.

[0152] Embodiment 8 is a system or apparatus, including units for implementing the method of any one of Examples 1 to 6 or implementing the apparatus of any one of Examples 1 to 6.

[0153] Example 9 is a non-transitory computer-readable medium, which stores instructions executable by one or more processors to enable the one or more processors to implement the method of any one of Examples 1 to 6.

[0154] Example 10 is a method for wireless communication at a UE, including: determining the TBS of a PUSCH transmission at least partially based on a set of PUSCH resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions; and transmitting the PUSCH repetitions on the repetition unit including the plurality of single repetitions by using the determined TBS.

[0155] In Example 11, the method of Example 10 further includes: the UE applies different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH transmission.

[0156] In Example 12, the method of any one of Example 10 or Example 11 further includes: the UE determines the TBS based on the total number of resource elements (N RE ), the total number of resource elements (N RE ) being based on the maximum average number of REs per time slot.

[0157] In Example 13, the method of any one of Examples 10 to 12 further includes: the UE determines N based on the minimum of the following items RE: The maximum average number of REs per time slot multiplied by the number of said multiple single repetitions, and the number of REs per PRB over said multiple single repetitions (N″ RE ).

[0158] In Example 14, the method of any one of Examples 10 to 13 further includes: the number of REs per PRB is greater than 14 symbols.

[0159] In Example 15, the method of any one of Examples 10 to 14 further includes: the PUSCH repetition performed using the determined TBS is based on at least one of the following: the maximum number of PRBs, the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

[0160] Example 16 is an apparatus, including one or more processors and one or more memories in electronic communication with the one or more processors, the memories storing instructions executable by the one or more processors to cause a system or device to implement the method of any one of Examples 10 to 15.

[0161] Embodiment 17 is a system or device, including units for implementing the method of any one of Examples 10 to 15 or implementing the apparatus of any one of Examples 10 to 15.

[0162] Example 18 is a non - transitory computer - readable medium, which stores instructions executable by one or more processors to cause the one or more processors to implement the method of any one of Examples 10 to 15.

[0163] Example 19 is a method for wireless communication at a UE, including: determining a transport block size (TBS) for a PUSCH transmission at least partially based on a set of PUSCH resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission over a repetition unit including a plurality of single repetitions; multiplexing UCI with the multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions over the repetition unit including the plurality of single repetitions; and transmitting the PUSCH repetitions and the multiplexed UCI over the multiple repetitions.

[0164] In Example 20, the method of Example 19 further includes: the UCI includes aperiodic CSI.

[0165] In Example 21, the method of any one of Example 19 or Example 20 further includes: the UE spreads the UCI over the plurality of single repetitions, the plurality of single repetitions starting from the first repetition among the multiple repetitions.

[0166] In Example 22, the method of any one of Examples 19 to 21 further includes: the UE repeating the UCI in each of the plurality of single repetitions, the plurality of single repetitions starting from the first repetition of the plurality of repetitions.

[0167] Example 23 is an apparatus including one or more processors and one or more memories in electronic communication with the one or more processors, the memories storing instructions executable by the one or more processors to cause a system or device to implement the method of any one of Examples 19 to 22.

[0168] Example 23 is a system or device including units for implementing the method of any one of Examples 19 to 22 or implementing the apparatus of any one of Examples 19 to 22.

[0169] Example 23 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement the method of any one of Examples 19 to 22.

[0170] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is illustrative of example methods. Based on design preferences, it is understood that the specific order or hierarchy of the blocks in the process / flowchart can be rearranged. Additionally, some blocks can be combined or omitted. The appended method claims present the elements of the various blocks in an example order and are not meant to be limited to the specific order or hierarchy presented.

[0171] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but rather should be accorded the full scope consistent with the language of the claims, where the singular forms of elements are not intended to mean "one and only one" but rather "one or more" unless specifically stated otherwise. Terms such as "if," "when," and "while" should be interpreted to mean "under the condition that" rather than implying an immediate temporal relationship or reaction. That is, these phrases (e.g., "when") do not imply an immediate action in response to the occurrence of an action or during the occurrence of an action, but rather only imply that the action will occur if the condition is met, without requiring a specific or immediate time limit for the occurrence of the action. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects. Unless otherwise expressly stated, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "any combination of A, B, C, or thereof" include any combination of A, B, and / or C and may include multiple A's, multiple B's, or multiple C's. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "any combination of A, B, C, or thereof" can be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination can include one or more members of A, B, or C. All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are known or later become known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public, whether or not such disclosure is expressly recited in the claims. The words "module," "mechanism," "element," "device," etc. are not intended to be substitutes for the word "unit." Thus, claim elements are not to be construed as module plus function unless the element is expressly recited using the phrase "means for."

Claims

1. A method for wireless communication of a user equipment (UE), comprising: Receiving scheduling downlink control information (DCI), the scheduling DCI indicating a scaling parameter for a transport block size (TBS) for physical uplink shared channel (PUSCH) transmission in a time domain resource allocation (TDRA) field, the PUSCH transmission being for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions; and Transmitting the PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI, wherein the TDRA field includes a PUSCH list for a plurality of PUSCH transmissions, the PUSCH list including the number of time slots determined for TBS determination for each of the plurality of PUSCH transmissions, and wherein the PUSCH list further includes one or more of the following: Physical downlink control channel (PDCCH) to PUSCH time slot offset, Mapping type, Start symbol, Symbol length, or Number of single repetitions for repetition.

2. The method according to claim 1, wherein The scaling parameter is applied to a PUSCH repetition type having time slots for the PUSCH repetitions.

3. The method according to claim 1, wherein The scaling parameter is applied to a PUSCH repetition type having consecutive symbols for the PUSCH repetitions.

4. The method according to claim 1, wherein The TBS of the PUSCH transmission is based on at least one of the following: maximum number of physical resource blocks (PRBs), maximum number of time slots, maximum number of symbols, or maximum modulation order.

5. An apparatus for wireless communication of a user equipment (UE), comprising: A unit for receiving scheduling downlink control information (DCI), the scheduling DCI indicating a scaling parameter for a transport block size (TBS) for physical uplink shared channel (PUSCH) transmission in a time domain resource allocation (TDRA) field, the PUSCH transmission being for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions; and A unit for transmitting the PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI, wherein the TDRA field includes a PUSCH list for a plurality of PUSCH transmissions, the PUSCH list including the number of time slots determined for TBS determination for each of the plurality of PUSCH transmissions, and wherein the PUSCH list further includes one or more of the following: Physical downlink control channel (PDCCH) to PUSCH time slot offset, Mapping type, Start symbol, Symbol length, or Number of single repetitions for repetition.

6. The device according to claim 5, wherein, The scaling parameter is applied to a PUSCH repetition type having time slots for the PUSCH repetitions.

7. The apparatus according to claim 5, wherein, The scaling parameter is applied to a PUSCH repetition type having consecutive symbols for the PUSCH repetitions.

8. The apparatus according to claim 5, wherein The transport block size (TBS) of the PUSCH transmission is based on at least one of the following: the maximum number of physical resource blocks (PRBs), the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

9. An apparatus for wireless communication of a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to perform the following operations: receive scheduling downlink control information (DCI), the scheduling DCI indicating in a time domain resource allocation (TDRA) field a scaling parameter for a transport block size (TBS) of a physical uplink shared channel (PUSCH) transmission, the PUSCH transmission being for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions; and send the PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI, wherein the TDRA field includes a PUSCH list for a plurality of PUSCH transmissions, the PUSCH list including the number of time slots determined for the TBS for each of the plurality of PUSCH transmissions, and wherein the PUSCH list further includes one or more of the following: a physical downlink control channel (PDCCH) to PUSCH time slot offset, a mapping type, a start symbol, a symbol length, or the number of single repetitions for the repetition.

10. The device according to claim 9, wherein, The scaling parameter is applied to a PUSCH repetition type having time slots for the PUSCH repetitions.

11. The apparatus according to claim 9, wherein, The scaling parameter is applied to a PUSCH repetition type having consecutive symbols for the PUSCH repetitions.

12. The device according to claim 9, wherein, The transport block size (TBS) of the PUSCH transmission is based on at least one of the following: the maximum number of physical resource blocks (PRBs), the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

13. A computer-readable medium storing computer-executable code for wireless communication of a user equipment (UE), the code, when executed by a processor, causing the processor to perform the following operations: receive scheduling downlink control information (DCI), the scheduling DCI indicating in a time domain resource allocation (TDRA) field a scaling parameter for a transport block size (TBS) of a physical uplink shared channel (PUSCH) transmission, the PUSCH transmission being for transmission as PUSCH repetitions on a repetition unit including a plurality of single repetitions; and send the PUSCH repetitions with scaling based on the scaling parameter indicated in the scheduling DCI, Among them, the TDRA field includes a PUSCH list for a plurality of PUSCH transmissions, the PUSCH list including the number of time slots determined for the TBS for each of the plurality of PUSCH transmissions, and wherein the PUSCH list further includes one or more of the following: a physical downlink control channel (PDCCH) to PUSCH time slot offset, a mapping type, a start symbol, a symbol length, or The number of single repetitions for repetition.

14. The computer-readable medium according to claim 13, wherein, The scaling parameter is applied to a PUSCH repetition type having time slots for the PUSCH repetition.

15. The computer-readable medium according to claim 13, wherein, The scaling parameter is applied to a PUSCH repetition type having consecutive symbols for the PUSCH repetition.

16. The computer-readable medium according to claim 13, wherein, The transport block size (TBS) of the PUSCH transmission is based on at least one of the following: the maximum number of physical resource blocks (PRBs), the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

17. A method for wireless communication at a user equipment (UE), comprising: Determining a transport block size (TBS) of a PUSCH transmission based at least in part on a set of physical uplink shared channel (PUSCH) resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions, wherein the TBS is based on different numbers of overhead symbols in different time slots of the plurality of single repetitions; and Transmitting the PUSCH repetitions with scaling based on the different numbers of overhead symbols in the different time slots.

18. The method according to claim 17, wherein, The UE applies different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH transmission.

19. The method according to claim 17, wherein, The UE determines the TBS based on the total number (N RE ) of resource elements, and the total number N RE of resource elements is based on the maximum average number of resource elements (REs) per time slot.

20. The method according to claim 19, wherein, The UE determines the N based on the minimum of the following items RE : The maximum average number of REs per time slot multiplied by the number of the plurality of single repetitions, and The number (N″) of REs per physical resource block (PRB) over said plurality of single repetitions RE ) 21. The method according to claim 20, wherein, The number of REs per PRB is greater than 14 symbols.

22. The method according to claim 17, wherein The PUSCH repetitions performed with the determined TBS are based on at least one of the following: the maximum number of physical resource blocks (PRBs), the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

23. An apparatus for wireless communication of a user equipment (UE), comprising: A unit for determining a transport block size (TBS) of a PUSCH transmission based at least in part on a set of physical uplink shared channel (PUSCH) resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions, wherein the TBS is based on different numbers of overhead symbols in different time slots of the plurality of single repetitions; and A unit for transmitting the PUSCH repetitions with scaling based on the different numbers of overhead symbols in the different time slots.

24. The apparatus according to claim 23, further comprising: A unit for applying different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH transmission.

25. The apparatus according to claim 23, further comprising: for determining the TBS based on the total number (N RE ) of resource elements, the total number N RE of resource elements is based on the maximum average number of resource elements (RE) per time slot.

26. The apparatus according to claim 25, further comprising: Unit for determining said N based on the minimum term among the following items RE thereof The maximum average number of REs per time slot multiplied by the number of the plurality of single repetitions, and The number (N″) of REs per physical resource block (PRB) over the plurality of single repetitions RE ) 27. The apparatus according to claim 26, wherein, The number of REs per PRB is greater than 14 symbols.

28. The apparatus according to claim 23, wherein, The PUSCH repetitions performed with the determined TBS are based on at least one of the following: the maximum number of physical resource blocks (PRBs), the maximum number of time slots, the maximum number of symbols, or the maximum modulation order.

29. An apparatus for wireless communication of a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to perform the following operations: determine a transport block size (TBS) of a physical uplink shared channel (PUSCH) transmission based at least in part on a set of PUSCH resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions, wherein the TBS is based on different numbers of overhead symbols in different time slots of the plurality of single repetitions; and send the PUSCH repetitions using scaling based on the different numbers of overhead symbols in the different time slots.

30. The apparatus according to claim 29, wherein, The at least one processor is further configured to apply different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH transmission.

31. The device according to claim 29, wherein The at least one processor is further configured to determine the TBS based on a total number (N RE ) of resource elements, the total number N RE of resource elements being based on a maximum average number of resource elements (REs) per time slot.

32. The apparatus according to claim 31, wherein, The at least one processor is further configured to: Determine the N based on the minimum term among the following items RE : multiply a maximum average number of resource elements (REs) per time slot by the number of the plurality of single repetitions, and The number (N″) of REs per physical resource block (PRB) over said plurality of single repetitions RE ) 33. The apparatus according to claim 32, wherein, the number of REs per physical resource block (PRB) is greater than 14 symbols.

34. The apparatus according to claim 29, wherein, The PUSCH repetitions performed using the determined TBS are based on at least one of: a maximum number of physical resource blocks (PRBs), a maximum number of time slots, a maximum number of symbols, or a maximum modulation order.

35. A computer-readable medium storing computer-executable code for wireless communication of a user equipment (UE), the code, when executed by a processor, causing the processor to perform the following operations: Determine a transport block size (TBS) for a physical uplink shared channel (PUSCH) transmission based at least in part on a set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission over a repetition unit including a plurality of single repetitions, wherein the TBS is based on different numbers of overhead symbols in different time slots of the plurality of single repetitions; and send the PUSCH repetitions using scaling based on the different numbers of overhead symbols in the different time slots.

36. The computer-readable medium according to claim 35, wherein, The code, when executed by a processor, further causes the processor to apply different overhead configurations to determine the TBS for the set of PUSCH repetitions rather than for a single PUSCH transmission.

37. The computer-readable medium according to claim 35, wherein, When executed by a processor, the code further causes the processor to determine the TBS based on the total number of resource elements (N RE ), where the total number of resource elements N RE is based on the maximum average number of resource elements (REs) per time slot.

38. The computer-readable medium according to claim 37, wherein When executed by a processor, the code also causes the processor to determine the N based on the minimum of the following RE : multiply a maximum average number of REs per time slot by the number of the plurality of single repetitions, and The number (N″) of REs per physical resource block (PRB) over the plurality of single repetitions RE ) 39. The computer-readable medium according to claim 38, wherein, the number of REs per PRB is greater than 14 symbols.

40. The computer-readable medium according to claim 35, wherein, The PUSCH repetitions performed using the determined TBS are based on at least one of: a maximum number of PRBs, a maximum number of time slots, a maximum number of symbols, or a maximum modulation order.

41. A method for wireless communication at a user equipment (UE), comprising: determine a transport block size (TBS) of a physical uplink shared channel (PUSCH) transmission based at least in part on a set of PUSCH resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including a plurality of single repetitions; multiplex uplink control information (UCI) with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions on the repetition unit including the plurality of single repetitions; and Transmit the PUSCH repetition and the UCI multiplexed on the multiple repetitions, wherein the UE spreads the UCI on the multiple single repetitions or the UE repeats the UCI in each of the multiple single repetitions, and the multiple single repetitions start from the first repetition of the multiple repetitions.

42. The method according to claim 41, wherein The UCI includes aperiodic channel state information (CSI).

43. An apparatus for wireless communication of a user equipment (UE), comprising: a unit for determining a transport block size (TBS) of a PUSCH transmission at least partially based on a set of physical uplink shared channel (PUSCH) resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including multiple single repetitions; a unit for multiplexing uplink control information (UCI) with multiple repetitions of the PUSCH transmission for transmission as a PUSCH repetition on a repetition unit including multiple single repetitions; a unit for transmitting the PUSCH repetition and the UCI multiplexed on the multiple repetitions; and a unit for spreading the UCI on the multiple single repetitions or for repeating the UCI in each of the multiple single repetitions, the multiple single repetitions starting from the first repetition of the multiple repetitions.

44. The apparatus according to claim 43, wherein, The UCI includes aperiodic channel state information (CSI).

45. An apparatus for wireless communication of a user equipment (UE), comprising: a memory; and at least one processor coupled to the memory and configured to perform the following operations: determine a transport block size (TBS) of a PUSCH transmission at least partially based on a set of physical uplink shared channel (PUSCH) resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including multiple single repetitions; multiplex uplink control information (UCI) with multiple repetitions of the PUSCH transmission for transmission as a PUSCH repetition on the repetition unit including the multiple single repetitions; transmit the PUSCH repetition and the UCI multiplexed on the multiple repetitions; and spread the UCI on the multiple single repetitions or repeat the UCI in each of the multiple single repetitions, the multiple single repetitions starting from the first repetition of the multiple repetitions.

46. The apparatus according to claim 45, wherein, The UCI includes aperiodic channel state information (CSI).

47. A computer-readable medium storing computer-executable code for wireless communication of a user equipment (UE), the code, when executed by a processor, causes the processor to perform the following operations: determine a transport block size (TBS) of a PUSCH transmission at least partially based on a set of physical uplink shared channel (PUSCH) resources, the set of PUSCH resources corresponding to a set of PUSCH repetitions for transmission on a repetition unit including multiple single repetitions; Multiplex the uplink control information (UCI) with multiple repetitions of the PUSCH transmission for transmission as PUSCH repetitions on the repetition unit including the multiple single repetitions; Transmit the PUSCH repetitions and the UCI multiplexed on the multiple repetitions; and Extend the UCI on the multiple single repetitions or repeat the UCI in each of the multiple single repetitions, where the multiple single repetitions start from the first repetition among the multiple repetitions.

48. The computer-readable medium according to claim 47, wherein, The UCI includes aperiodic channel state information (CSI).

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