16-Quadrature Amplitude Modulation (16-QAM) Downlink Configuration

Abstract

A method, apparatus, and computer program product for wireless communication are provided. The apparatus can enable selection of modulation order (Qm) parameters, transport block size (TBS) parameters, number of subframes in a transport block (NSF) parameters, etc. For example, at least in part based on receiving downlink control information or another factor, a user equipment can select a table of, for example, Qm, TBS, and NSF values, and can select a particular set of Qm values, TBS values, and NSF values from the table. In this way, the UE can use higher order modulation and coding schemes in, for example, narrowband Internet of Things deployments.

Description

[0001] Cross - Reference to Related Applications

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 977,104, entitled "16 - QUADRATURE AMPLITUDE MODULATION (16 - QAM) DOWNLINK CONFIGURATION", filed on February 14, 2020, and U.S. Non - Provisional Patent Application No. 17 / 173,683, entitled "16 - QUADRATURE AMPLITUDE MODULATION (16 - QAM) DOWNLINK CONFIGURATION", filed on February 11, 2021, which are hereby incorporated by reference in their entirety. Background Field of Technology

[0004] Aspects of the present disclosure generally relate to wireless communication and relate to techniques and apparatuses for 16 - Quadrature Amplitude Modulation (16 - QAM) downlink configuration. Background Art

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ multiple access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access techniques 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, Time Division Synchronous Code Division Multiple Access (TD - SCDMA) systems, and Long Term Evolution (LTE). LTE / Advanced LTE is an enhanced set of the Universal Mobile Telecommunication System (UMTS) mobile standard promulgated by the 3rd Generation Partnership Project (3GPP).

[0007] A wireless communication network may include several Base Stations (BSs) capable of supporting communication of several User Equipments (UEs). The UE may communicate with the BS via the downlink and the uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, the BS may be referred to as a Node B, gNB, Access Point (AP), Radio Head, Transmission and Reception Point (TRP), 5G BS, 5G Node B, and so on.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless communication devices to communicate at the urban, national, regional, and even global levels. 5G (which may also be referred to as NR) is an enhanced set of the LTE mobile standard promulgated by 3GPP. 5G is designed to better support mobile broadband Internet access by using OFDM with cyclic prefix (CP-OFDM) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation to improve spectral efficiency, reduce costs, improve services, utilize new spectra, and better integrate with other open standards. However, as the demand for mobile broadband access continues to grow, there is a need for further improvement of LTE and 5G technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies.

[0009] Overview

[0010] In some communication systems, different modulation orders may be used for user equipment (UE) and base station (BS) communication. For example, in a narrowband Internet of Things (NB-IoT) deployment, the communication system may support modulation orders up to quadrature phase shift keying (QPSK). However, on the downlink, higher-order modulation may not be supported for NB-IoT deployments. Some aspects described herein provide for the configuration of higher-order modulation on the downlink (such as in an NB-IoT deployment). For example, a UE may receive communication from a BS via a narrowband physical downlink shared channel (NPDSCH) modulated with at least 16-quadrature amplitude modulation (16-QAM). In this case, the communication may be downlink control information (DCI) including information identifying a set of parameters for communicating with the BS.

[0011] Some aspects described herein may identify the association between the information transmitted in the NPDSCH and the configuration used by the UE to interpret the information. Some aspects described herein may specify the scheduling constraints for higher-order modulation and coding schemes. Some aspects described herein may specify joint coding for DCI. Some aspects described herein may enable a UE to select modulation order (Qm) parameters, transport block size (TBS) parameters, the number of subframes in a transport block (NSF) parameter, etc. For example, as described in more detail herein, at least in part based on receiving DCI or another factor, a UE may select a table including, for example, a set of Qm values, a set of TBS values, and a set of NSF values, and may select a particular set of Qm values, TBS values, and NSF values from the table. In this way, a UE may use higher-order modulation and coding schemes in, for example, an NB-IoT deployment.

[0012] In some aspects, a wireless communication method performed by a UE may include: receiving control information identifying a set of parameters associated with a narrowband downlink shared channel modulated with at least 16-QAM; and determining, by the UE, a communication configuration for the narrowband downlink shared channel based at least in part on the control information identifying the set of parameters associated with the narrowband downlink shared channel and at least in part on an overhead associated with time and frequency resources available for narrowband downlink shared channel transmission.

[0013] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: receive control information identifying a set of parameters associated with a narrowband downlink shared channel modulated with at least 16-QAM; and determine, at least in part based on the control information identifying the set of parameters associated with the narrowband downlink shared channel and at least in part based on an overhead associated with time and frequency resources available for narrowband downlink shared channel transmission, a communication configuration for the narrowband downlink shared channel.

[0014] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to perform operations including: receiving control information identifying a set of parameters associated with a narrowband downlink shared channel modulated with at least 16-QAM; and determining, at least in part based on the control information identifying the set of parameters associated with the narrowband downlink shared channel and at least in part based on an overhead associated with time and frequency resources available for narrowband downlink shared channel transmission, a communication configuration for the narrowband downlink shared channel.

[0015] In some aspects, a device for wireless communication may include: means for receiving control information identifying a set of parameters associated with a narrowband downlink shared channel modulated with at least 16-QAM; and means for determining, at least in part based on the control information identifying the set of parameters associated with the narrowband downlink shared channel and at least in part based on an overhead associated with time and frequency resources available for narrowband downlink shared channel transmission, a communication configuration for the narrowband downlink shared channel.

[0016] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems substantially as described with reference to the figures and the description and as illustrated in the figures and the description.

[0017] The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in an effort to enable the following detailed description to be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in terms of both their organization and method of operation, as well as the associated advantages, will be better understood when the following description is considered in conjunction with the accompanying drawings. Each of the drawings is provided for purposes of illustration and description, and is not intended to define a limitation of the claims. Brief Description of the Drawings

[0019] Figure 1 is a diagram illustrating an example of a wireless communication network.

[0020] Figure 2 is a diagram illustrating an example of a base station and a user equipment (UE) in communication in a wireless communication network.

[0021] Figures 3A - 3E is a diagram illustrating an example of a 16 - Quadrature Amplitude Modulation (16 - QAM) downlink configuration.

[0022] Figure 4 is a flowchart of a wireless communication method.

[0023] Figure 5 is a conceptual data flow diagram illustrating the data flow between different components in an example device.

[0024] Figure 6 is a diagram illustrating an example of a hardware implementation of an apparatus employing a processing system.

[0025] Detailed Description

[0026] 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. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled 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.

[0027] Certain aspects of a telecommunications system will now be presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, and the like (collectively referred to as “elements”). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0028] As an example, an element, or any portion of an element, or any combination of elements can be implemented with a processing system that includes one or more processors. Examples of processors include microprocessors, microcontrollers, digital signal processors (DSPs), 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 may execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether described in software, firmware, middleware, microcode, hardware description language, or other terms.

[0029] Accordingly, in one or more example embodiments, the described functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes 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 may include random access memory (RAM), read only memory (ROM), electrically erasable programmable ROM (EEPROM), compact disc ROM (CD-ROM) or other optical disc storage, magnetic disk storage or 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 and that can be accessed by a computer.

[0030] It should be noted that although aspects in this document may be described using terms typically associated with 3G and / or 4G wireless technologies, aspects of the present disclosure may be applied in communication systems based on other generations (such as 5G and later generations, including 5G technology).

[0031] Figure 1FIG. 0 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G network. The wireless network 100 may include several BSs 110 (shown as BS110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UE) and may also be referred to as a base station, 5G BS, B node, gNB, 5G NB, access point, transmission reception point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to the coverage area of a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0032] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., with a radius of several kilometers) and may allow unconstrained access by UEs having a service subscription. A pico cell may cover a relatively small geographic area and may allow unconstrained access by UEs having a service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow constrained access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the Figure 1 example shown in FIG. 5, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "5G BS", "gNB", "TRP", "AP", "B node", "5G NB", and "cell" may be used interchangeably herein.

[0033] In some examples, a cell may not have to be stationary, and the geographic area of a cell may move according to the location of a mobile BS. In some examples, BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network via various types of backhaul interfaces, such as direct physical connections, virtual networks, etc.

[0034] The wireless network 100 may also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send the transmission of the data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In Figure 1 the example shown in, the relay BS 110d can communicate with the macro BS 110a and the UE 120d to facilitate communication between the BS 110a and the UE 120d. The relay BS may also be referred to as a relay station, a relay base station, a relay, etc.

[0035] The wireless network 100 can be a heterogeneous network that includes different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0036] The network controller 130 may be coupled to the set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. These BSs may also communicate with each other directly or indirectly, e.g., via a wireless or wired backhaul.

[0037] The UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, a superbook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle-mounted component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0038] Some UEs may be considered machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to a network (e.g., a wide area network such as the Internet or a cellular network) or provide connectivity to the network, for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, and / or may be implemented as narrowband IoT (NB-IoT) devices. For example, some UEs may be NB-IoT devices configured to operate at 16 quadrature amplitude modulation (16-QAM) or higher on the downlink. Some UEs may be considered customer premise equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, and so on.

[0039] Generally, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a specific RAT and may operate on one or more frequencies. The RAT may also be referred to as a radio technology, an air interface, etc. The frequency may also be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, a 5G RAT network may be deployed.

[0040] In some examples, access to the air interface may be scheduled, where a scheduling entity (e.g., a base station) allocates resources for communication among some or all of the devices and equipment within the service area or cell of the scheduling entity. Within the present disclosure, as further discussed below, the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for the scheduled communication, the subordinate entities utilize the resources allocated by the scheduling entity.

[0041] A base station is not the only entity that can be used as a scheduling entity. That is, in some examples, a UE may be used as a scheduling entity to schedule resources for one or more subordinate entities (e.g., one or more other UEs). In this example, the UE is acting as a scheduling entity, and the other UEs utilize the resources scheduled by the UE for wireless communication. A UE may be used as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In the mesh network example, the UEs may optionally communicate directly with each other in addition to communicating with the scheduling entity.

[0042] Thus, in a wireless communication network having scheduled access to time-frequency resources and having a cellular configuration, a P2P configuration, and a mesh configuration, a scheduling entity and one or more subordinate entities may utilize the scheduled resources to communicate.

[0043] As indicated above, Figure 1 is provided merely by way of example. Other examples may be different from those Figure 1 described herein.

[0044] Figure 2 illustrates a block diagram 200 of the design of a base station 110 and a UE 120 that may be Figure 1 one of the base stations and one of the UEs in. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where generally T≥1 and R≥1.

[0045] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, may select one or more modulation and coding schemes (MCSs) for a UE at least in part based on a channel quality indicator (CQI) received from each UE, process (e.g., encode and modulate) the data for the UE at least in part based on the MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., CRS) and synchronization signals (e.g., a primary synchronization signal (PSS) and a secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process its respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via the T antennas 234a through 234t, respectively. According to various aspects described in more detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0046] At the UE 120, antennas 252a through 252r may receive downlink signals from the base station 110 and / or other base stations and may provide the received signals to demodulators (DEMOD) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. For example, each demodulator 254 may be configured to demodulate 16-QAM or higher modulation order transmissions from the BS 110. The MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols when applicable, and provide detected symbols. The receive (RX) processor 258 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for the UE 120 to the data sink 260, and provide the decoded control information and system information to the controller / processor 280. The channel processor may determine the RSRP, RSSI, RSRQ, CQI, etc.

[0047] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 when applicable, further processed by the modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, the uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 when applicable, and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0048] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) may perform one or more techniques associated with the 16-QAM downlink configuration, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) may execute or direct the operation of, for example Figure 4 Method 400, and / or other processes as described herein. The memories 242 and 282 may store data and program code for use by the BS 110 and the UE 120, respectively. The scheduler 246 may schedule the UE for data transmission on the downlink and / or uplink.

[0049] As indicated above, Figure 2 is provided merely by way of example. Other examples may be different from the example(s) described with respect to Figure 2 that are described.

[0050] Figures 3A - 3E is a diagram illustrating example 300 of a 16-QAM downlink configuration in accordance with various aspects of the present disclosure. As Figure 3A shown, example 300 may include a BS 110 and a UE 120.

[0051] As Figure 3A shown, at 310, the UE 120 may receive a narrowband downlink control channel, which may include associated control information. For example, the UE 120 may receive a narrowband physical downlink control channel (NPDCCH) associated with a narrowband physical downlink shared channel (NPDSCH), and the NPDCCH may include DCI scheduling the NPDSCH. In one example, the UE 120 may transmit information identifying the UE's 16-QAM reception capability to the BS 110 to indicate that the UE 120 is capable of receiving at 16-QAM or higher modulation transmission. Additionally or alternatively, the 16-QAM or higher capability may be specified for the UE 120.

[0052] In some aspects, UE 120 may receive the NPDSCH using at least 16-QAM based at least in part on specific channel conditions. For example, when there are specific channel conditions, BS 110 may select 16-QAM transmission. In some aspects, when BS 110 selects to use 16-QAM transmission, BS 110 may select a specific resource allocation configuration for 16-QAM transmission (e.g., a specific number of subframes in a transport block or a specific number of repetitions of subframes). In some aspects, 16-QAM may be selected as a subset of resource allocation configurations that can be configured with QPSK. For example, BS 110 may select 16-QAM when the number of repetitions is 1, but BS 110 may select QPSK when the number of repetitions is 1 or other possible numbers. In some aspects, BS 110 and UE 120 may use 16-QAM based at least in part on one or more layer 1 signaling messages (e.g., DCI messages) or higher layer signaling messages (e.g., radio resource control (RRC) messages) being conveyed.

[0053] In some aspects, UE 120 may receive DCI encoded with a specific bit coding scheme. For example, UE 120 may receive DCI where the joint coding of DCI fields is configured differently than DCI associated with other QPSK-based transmission techniques. For example, the DCI may employ joint coding of modulation and coding scheme parameters and several repetition parameters. In this case, when the higher modulation and coding scheme index indicates 16-QAM, the number of bits indicating the repetition count field may be only 0 bits or 1 bit (instead of 4 bits for other QPSK-based transmissions because, as described above, the number of repetitions for 16-QAM may be limited to a smaller value than QPSK). Additionally or alternatively, UE 120 may include additional bits for identifying additional modulation and coding scheme entries associated with additional transport block sizes for 16-QAM (e.g., some bits that may be reduced from the repetition count field). Additionally or alternatively, the DCI may include joint coding of a resource assignment (e.g., number of subframes) field with a modulation and coding scheme field or another set of jointly encoded parameters. Additionally or alternatively, different coding schemes may be used to encode the DCI based at least in part on whether the parameter table described below is RRC-configured or signaled via DCI.

[0054] At 320, the UE 120 may determine the communication configuration of the narrowband downlink shared channel. For example, the UE 120 may determine the communication configuration at least in part based on the DCI that schedules the NPDSCH, where the DCI identifies the parameter set for the NPDSCH. In some aspects, the NPDSCH may have a subset of possible RNTI associations relative to other techniques for narrowband downlink shared channel transmission (e.g., using QPSK modulation), as described below. As an example of a maintainable association, the NPDSCH and the scheduling DCI may be associated with a paging radio network temporary identifier (P-RNTI), and the UE 120 may interpret the DCI at least in part based on the DCI being associated with the P-RNTI. For example, the UE 120 may determine that the DCI is associated with the P-RNTI and may determine that the DCI is DCI format N2 associated with a type 1 common search space (CSS). Additionally or alternatively, the UE 120 may determine that the NPDSCH and the DCI are associated with a random access response RNTI (RA-RNTI) (e.g., a random access response message, such as msg2 of a random access procedure), and may determine that the DCI is DCI format N1 associated with a type 2 CSS. Additionally or alternatively, the UE 120 may determine that the DCI is associated with a cell RNTI (C-RNTI), and may determine that the DCI is DCI format N1 associated with a UE-specific search space (USS). Additionally or alternatively, the UE 120 may determine that the DCI is associated with a temporary C-RNTI or a C-RNTI during random access, and may determine that the DCI is DCI format N1 associated with a type 2 CSS.

[0055] In some aspects, the UE 120 may determine that the DCI is associated with a system information RNTI (SI-RNTI), and may determine that the NPDSCH corresponds to a system information block (SIB). Additionally or alternatively, the UE 120 may determine that the NPDSCH is associated with single cell point-to-multipoint (SC-PTM) control information (e.g., a single cell RNTI (SC-RNTI)), and may determine that the DCI is associated with DCI format N2 and a type 1A CSS. Additionally or alternatively, the UE 120 may determine that the NPDSCH is associated with an SC-PTM transmission (e.g., a group RNTI (G-RNTI)), and may determine that the DCI is associated with DCI format N1 and a type 2A CSS. Additionally or alternatively, the UE 120 may determine that the NPDSCH is associated with a response to a transmission on a preconfigured uplink resource (PUR) having a cell RNTI (PUR C-RNTI), and may determine that the DCI is associated with DCI format N1 and USS.

[0056] In some aspects, the UE 120 may use higher layer signaling to determine the communication configuration. For example, the UE 120 may receive higher layer signaling indicating that the NPDSCH and the associated RNTI are transmitted using 16-QAM. In other words, the UE 120 may receive signaling that indicates that when the UE 120 receives the NPDSCH with the associated RNTI, the UE 120 interprets the NPDSCH as having been transmitted using at least 16-QAM modulation.

[0057] In some aspects, when determining the communication configuration, the UE 120 may determine a parameter set for the NPDSCH (e.g., modulation order (Qm), transport block size (TBS), number of subframes in the transport block (NSF), etc.). For example, the UE 120 may determine the parameter set at least in part based on one or more of a plurality of factors (e.g., select a table including the parameter set or select a specific row from a table), as described below. As an example, the UE 120 may determine the parameter set at least in part based on the deployment type. For example, the UE 120 may determine the parameter set at least in part based on whether the deployment type is an in-band deployment type, a guard band deployment type, or a stand-alone deployment type, etc. (e.g., a table from which the UE 150 may select the parameter set). In this case, as an example, an in-band deployment may have cell-specific reference signals (CRS) associated with a full-bandwidth cell, which may result in different levels of signaling overhead relative to another type of deployment.

[0058] For example, different NB IoT deployments may have different reference signal overheads. "Overhead" may refer to the number or ratio of resources (e.g., resource elements) occupied by the reference signal compared to all available resources (or all resources excluding the reference signal). Since different NB-IoT deployments are associated with different resource allocations and different reference signal configurations, different NB-IoT deployments may have different reference information overheads. For example, compared to an in-band NB-IoT deployment (e.g., an in-band LTE deployment) or a guard band NB-IoT deployment type, a stand-alone NB-IoT deployment may have more resource elements (REs) available. For example, a stand-alone deployment type may have all resource blocks included in a dedicated NB-IoT band available for NB-IoT communication, while in an in-band deployment or a guard band deployment, not all RBs within the NB-IoT band may be available for NB-IoT communication (e.g., to reduce interference to other communications).

[0059] Additionally or alternatively, the UE 120 may determine the parameter set at least in part based on the start time index within a subframe or time slot of the first orthogonal frequency division multiplexing (OFDM) symbol of the NPDSCH in an NB-IoT downlink subframe (e.g., in an in-band deployment). In this case, the UE 120 may identify a larger resource overhead for a pointer indicating a larger value (e.g., relative to a smaller value) of the time index of the first OFDM symbol, and may select the parameter set (e.g., table) at least in part based on this larger resource overhead. For example, as described below, some tables of parameter sets may be configured such that they have parameter values for a relatively large amount of resource overhead, while other tables of parameter sets may be configured such that they have parameter values for a relatively small amount of resource overhead. Additionally or alternatively, the UE 120 may determine the parameter set at least in part based on the number of reference signal ports. For example, when there is a specific number of narrowband reference signal ports, cell-specific reference signal ports, etc., the UE 120 may select a specific parameter set from which to select one or more parameters.

[0060] Additionally or alternatively, the UE 120 may determine the parameter set at least in part based on a capability metric. For example, the UE 120 may determine the energy per resource element (EPRE) of a narrowband reference signal or a cell-specific reference signal in the cell in which the UE 120 is receiving the NPDSCH. In this case, when the UE 120 determines that, for example, a cell-specific reference signal is power-boosted relative to a baseline value in a particular symbol set, the UE 120 may determine that the amount of available power for NPDSCH communication is relatively low in the particular symbol set, which may result in a particular selection of the parameter set. In other words, the UE 120 may select a table configured with parameter values suitable for a situation where there is a relatively low amount of power available for NPDSCH communication. Additionally or alternatively, the UE 120 may determine that there is a narrowband positioning reference signal in the downlink subframe, and may determine the parameter set at least in part based on the presence of the narrowband positioning reference signal (NPRS). In some aspects, when the narrowband positioning reference signal is present and conflicts with NPDSCH resource elements, the BS 110 may puncture the NPDSCH source elements. In this case, the UE 120 may be configured to use a non-16-QAM parameter set at least in part based on the non-support of 16-QAM transmission in at least some portions of the NPDSCH transmission conflicting with the NPRS, or may treat the narrowband positioning reference signal as overhead to determine a parameter set for enabling 16-QAM transmission. In some aspects, the UE 120 may select the parameter set at least in part based on two or more types of resource overhead, as described above.

[0061] In some aspects, the UE 120 may select a parameter set from a plurality of configured parameter sets (e.g., each parameter set includes modulation and coding scheme parameters, Qm parameters, TBS parameters, NSF parameters, combinations thereof, etc.). For example, at least partially based on the specific time index of the first OFDM symbol in a subframe or time slot of an NPDSCH transmission, a specific maximum supported modulation order, etc., the UE 120 may select a table of configured parameter sets, as described below. In this case, the UE 120 may select a parameter set from the selected configured parameter table. Additionally or alternatively, the UE 120 may select a table at least partially based on a deployment scenario or another type of factor described herein. In some aspects, the UE 120 may select a table at least partially based on a higher layer parameter. For example, the UE 120 may be configured with a higher layer parameter that configures 16-QAM NPDSCH, and may select a table for selecting a parameter set at least partially based on the higher layer parameter. In this case, if the parameter is set to disabled, the UE 120 may select a table corresponding only to QPSK-based transmission. Alternatively, if the parameter is set to enabled, the UE 120 may select a table that allows 16-QAM-based NPDSCH configuration. Alternatively, the UE 120 may derive a table or a predefined set of configurations at least partially based on bits of the DCI.

[0062] In some aspects, the UE 120 may receive a higher layer indicator that explicitly identifies the configuration of a parameter set. In this case, the UE 120 may receive a higher layer parameter that configures a specific table. For example, the UE 120 may receive a higher layer parameter that configures one of a plurality of parameter sets (e.g., one of a plurality of table sets), and the UE 120 determines a specific value (e.g., modulation and coding scheme, transport block size, etc.) of the parameters in the selected parameter set at least partially based on bits in the DCI that identify which parameters to select from the selected parameter set. In other words, the UE 120 may receive higher layer signaling (e.g., RRC signaling) that selects a specific table from a plurality of predefined tables. Further, the UE 120 may select a specific row from the selected table at least partially based on the received DCI that includes information identifying an index, such as a specific row. In some aspects, as described above, when using a higher layer parameter to explicitly indicate which table to select, the BS 110 may account for resource overhead.

[0063] In some aspects, the UE 120 may implicitly determine which table to select at least partially based on the DCI (e.g., instead of receiving higher layer signaling). For example, the UE 120 may parse the bits of the DCI to determine which table to select, and may then use the DCI to select a specific row from the selected table.

[0064] Figures 3B - 3EAn example of Table 350 - 353 of parameter sets that can be selected for decoding NPDSCH is provided. For example, UE 120 may have Table 350 - 353 configured as described above, and may select one of Table 350 - 353 based at least in part on at least one of DCI or a higher layer indication, as described above. Although some aspects are described herein in the form of a table, other set descriptions or data structures different from those described herein are also contemplated. However, although Table 350 - 353 is described herein, other tables may also be used, and Table 350 - 353 may have additional values not shown.

[0065] As Figure 3B shown, UE 120 may use the first Table 350 to map modulation and coding schemes to the TBS parameter of NPDSCH. For example, UE 120 determines the entry in the table corresponding to Q m = 4 based at least in part on the indication in DCI to select the parameters for decoding a 16QAM - based NPDSCH transmission. In this case, the entries for Q m = 4 may each have, for example, corresponding modulation and coding scheme (MCS) parameters, TBS parameters, etc. In this case, based at least in part on selecting a specific row from Table 350 (e.g., MCS index = 6, Q m = 4, TBS index = 6), UE 120 may use the parameter values of the specific row to decode PDSCH.

[0066] Similarly, as Figure 3C and 3D shown, UE 120 may be configured to use Table 351 for decoding low - resource - overhead NPDSCH transmissions, or Table 352 for decoding high - resource - overhead NPDSCH transmissions, as described above. In this case, as shown, Table 351 and Table 352 may have different switching points for switching from QPSK (e.g., Q m = 2) to 16 - QAM (e.g., Q m = 4) and different associated modulation and coding schemes and TBS values.

[0067] Similarly, as Figure 3E shown, UE 120 may be configured to use Table 353 to map modulation and coding schemes to TBS parameters for decoding NPDSCH transmissions. In this case, as shown, some TBS values are mapped to multiple different modulation orders. In this way, UE 120 may be configured to have a table that enables selection of parameters targeting different resource - overhead configurations for the NPDSCH transmission within a single table.

[0068] As indicated above, Figures 3A - 3E is provided as an example. Other examples may be different from those regarding Figures 3A - 3EThe example described.

[0069] Figure 4 is a flowchart of a wireless communication method 400. The method may be performed by a UE (e.g., UE 120, the apparatus 502 / 502' described below, etc.).

[0070] At 410, in some aspects, method 400 may include transmitting an indicator of 16-QAM reception capability. For example, a UE (e.g., using the receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may transmit an indicator of 16-QAM capability, as described above. Additionally or alternatively, 16-QAM reception may be specified for the UE.

[0071] At 420, method 400 may include receiving control information identifying a set of parameters associated with a narrowband downlink shared channel. For example, a UE (e.g., using the receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may receive control information in a narrowband downlink control channel, the control information identifying a set of parameters associated with a narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM) and corresponding to the narrowband downlink control channel, as described above. Additionally or alternatively, the UE may use different (e.g., other than NPDSCH or DCI) signaling to receive the control information, such as higher layer signaling, etc.

[0072] At 430, method 400 may include determining a communication configuration for the narrowband downlink shared channel. For example, a UE (e.g., using the receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may determine a communication configuration for the narrowband downlink shared channel based at least in part on the control information identifying the set of parameters associated with the narrowband downlink shared channel, as described above. Additionally or alternatively, method 400 may include determining the communication configuration based at least in part on the overhead associated with the time and frequency resources available for narrowband downlink shared channel transmission.

[0073] Method 400 may include additional aspects, such as any single aspect or any combination of the following aspects, and / or in combination with one or more other processes described elsewhere herein.

[0074] In a first aspect, method 400 includes transmitting an indicator of 16-QAM reception capability; and receiving control information in response to the transmitted indicator of 16-QAM reception capability. In a second aspect, either alone or in combination with the first aspect, the control information is downlink control information (DCI), and the UE is configured to parse bits of the DCI at least in part based on a configuration of the control information, each configuration being determined from a subset of candidate configurations of the DCI for a narrowband downlink shared channel modulated with at least quadrature phase shift keying (QPSK). In a third aspect, either alone or in combination with one or more of the first and second aspects, the candidate configurations include an association with at least one of the following: a paging radio network temporary identifier (RNTI), a random access RNTI, a cell RNTI, a temporary cell RNTI, a system information RNTI, a single cell point-to-multipoint (SC-PTM) control information RNTI, a group RNTI (G-RNTI), or a preconfigured uplink resource (PUR) cell RNTI (PUR C-RNTI).

[0075] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the candidate configurations include an association with at least one of a DCI format or a search space type. In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, determining a communication configuration includes determining at least one of the following: a modulation order, a transport block size, or a number of subframes in a transport block. In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, determining a communication configuration includes determining the communication configuration at least in part based on a deployment type.

[0076] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the deployment type includes at least one of an in-band deployment type, a guard band deployment type, or a stand-alone deployment type. In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, determining a communication configuration includes determining the communication configuration at least in part based on a starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of the narrowband downlink shared channel. In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, determining a communication configuration includes determining the communication configuration at least in part based on a number of configured reference signal ports in a cell in which the UE is communicating.

[0077] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the number of configured reference signal ports includes at least one of narrowband reference signal ports or cell-specific reference signal ports. In an eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, determining a communication configuration includes: determining the communication configuration at least in part based on an energy metric associated with a configured reference signal in a cell in which the UE is receiving a narrowband downlink shared channel. In a twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, determining a communication configuration includes: determining the communication configuration at least in part based on whether a narrowband cell and the underlying full-bandwidth cell of the narrowband cell have the same or different primary cell identifiers (PCIs).

[0078] In a thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, determining a communication configuration includes: determining the communication configuration at least in part based on the presence of a narrowband positioning reference signal. In a fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, determining a communication configuration includes: determining the communication configuration at least in part based on an overhead metric associated with time and frequency resources available for narrowband downlink shared channel transmission. In a fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, determining a communication configuration includes: determining the communication configuration at least in part based on a group of predefined parameter sets, where the predefined parameter sets in the group of predefined parameter sets include at least one of a modulation and coding scheme parameter set, a transport block size parameter set, or a parameter set identifying the number of subframes.

[0079] In a sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the UE is configured to select a predefined parameter set from the group of predefined parameter sets based at least in part on at least one of the following: deployment type, the value of the starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of the narrowband downlink shared channel, or the maximum modulation order. In a seventeenth aspect, either alone or in combination with one or more of the first to sixteenth aspects, the UE is configured to select one or more parameters from a predefined parameter set based at least in part on at least one of the deployment type, the value of the starting OFDM symbol index in a subframe of the narrowband downlink shared channel, or the maximum modulation order. In an eighteenth aspect, either alone or in combination with one or more of the first to seventeenth aspects, determining a communication configuration includes: determining the communication configuration at least in part based on higher layer parameters that configure the UE to receive a narrowband downlink shared channel.

[0080] In a nineteenth aspect, either alone or in combination with one or more of the first to eighteenth aspects, the UE is configured to be disabled to select quadrature phase shift keying (QPSK) modulation and a related subset of parameters, at least in part based on a higher layer parameter. In a twentieth aspect, either alone or in combination with one or more of the first to nineteenth aspects, the UE is configured to be enabled to select at least 16-QAM modulation, at least in part based on a higher layer parameter. In a twenty-first aspect, either alone or in combination with one or more of the first to twentieth aspects, the UE is configured to select a subset of parameters for a parameter set, at least in part based on selecting at least 16-QAM modulation.

[0081] In a twenty-second aspect, either alone or in combination with one or more of the first to twenty-first aspects, determining a communication configuration includes: determining the communication configuration at least in part based on an indication in control information that identifies a set of fields corresponding to at least one of a modulation and coding scheme, a transport block size, or a number of subframes. In a twenty-third aspect, either alone or in combination with one or more of the first to twenty-second aspects, determining a communication configuration includes: determining a resource allocation configuration. In a twenty-fourth aspect, either alone or in combination with one or more of the first to twenty-third aspects, the resource allocation configuration is selected from a subset of available resource allocation configurations that can be configured for a narrowband downlink shared channel modulated with a modulation order of at least 2. In some aspects, the resource allocation configuration indicates that 16-QAM is to be used for a first number of repetitions, while a different modulation and coding scheme is to be used for a second number of repetitions.

[0082] In a twenty-fifth aspect, either alone or in combination with one or more of the first to twenty-fourth aspects, the resource allocation configuration includes an indicator of at least one of a number of subframes in a transport block or a number of repetitions of a subframe. In a twenty-sixth aspect, either alone or in combination with one or more of the first to twenty-fifth aspects, the control information includes physical layer downlink control information (DCI), and determining the communication configuration includes: interpreting bits of the DCI at least in part based on receiving other control information that configures the UE to receive a narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM). In a twenty-seventh aspect, either alone or in combination with one or more of the first to twenty-sixth aspects, in the DCI, a modulation and coding scheme field and a number of repetitions field are jointly encoded. In some aspects, the resource allocation configuration indicates that 16-QAM is to be used for a first number of repetitions, while a different modulation and coding scheme is to be used for a second number of repetitions.

[0083] In a twenty-eighth aspect, either alone or in combination with one or more of the first to twenty-seventh aspects, in DCI, a modulation and coding scheme field and a resource allocation field are jointly encoded. In a twenty-ninth aspect, either alone or in combination with one or more of the first to twenty-eighth aspects, the control information is downlink control information (DCI), and determining a communication configuration includes: determining the communication configuration based at least in part on the number of transport blocks scheduled by the DCI. In a thirtieth aspect, either alone or in combination with one or more of the first to twenty-ninth aspects, the control information is downlink control information (DCI), and determining a communication configuration includes: interpreting bits of the DCI based at least in part on the number of transport blocks scheduled by the DCI.

[0084] In a thirty-first aspect, either alone or in combination with one or more of the first to thirtieth aspects, the UE is configured to select a predefined parameter set from a group of predefined parameter sets based at least in part on an indication from a higher layer. In a thirty-second aspect, either alone or in combination with one or more of the first to thirty-first aspects, the control information is downlink control information (DCI), wherein the UE is configured to select a predefined parameter set from a group of predefined parameter sets based at least in part on a set of bits in the DCI.

[0085] In a thirty-third aspect, either alone or in combination with one or more of the first to thirty-second aspects, the overhead is determined based at least in part on at least one of a deployment type, a value of a starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of a narrowband downlink shared channel, or a maximum modulation order. In some aspects, the deployment type includes at least one of an in-band deployment type, a guard band deployment type, or a stand-alone deployment type.

[0086] In a thirty-fourth aspect, either alone or in combination with one or more of the first to thirty-third aspects, the control information indicates a first modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with lower resource overhead, and indicates a second modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with higher resource overhead.

[0087] Although Figure 4 illustrates example blocks of method 400, in some aspects, method 400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in Figure 4 . Additionally or alternatively, two or more blocks of method 400 may be executed in parallel.

[0088] Figure 5FIG. 500 is a conceptual data flow diagram illustrating the data flow between different components in an illustrative example device 502. The device 502 may be a UE (e.g., UE 120). In some aspects, the device 502 includes a receiving component 504, a determining component 506, and / or a transmitting component 508.

[0089] The receiving component 504 may receive data on a downlink from the BS 550, such as DCI including information related to 16-QAM or higher communications. The determining component 506 may determine a communication configuration at least in part based on signaling received from the BS 550, as described above. For example, the determining component 506 may parse the received NPDCCH to identify a table from which to select a modulation and coding scheme, a transport block size, a number of subframes in a transport block, and / or an analog for receiving the NPDSCH, as described above. In some aspects, the transmitting component 508 may transmit UE capability information indicating that the device 502 is capable of using 16-QAM or higher modulation.

[0090] The device may include additional components that perform each block of the algorithms in the foregoing Figure 4 method 400, and / or analogs thereof may be performed by components, and the device may include one or more of those components. These components may be one or more hardware components specifically configured to perform the processes / algorithms, implemented by a processor configured to perform the processes / algorithms, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0091] Figure 5 The number and arrangement of the components shown in Figure 5 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components compared to those shown in Figure 5 In addition, Figure 5 two or more components shown in Figure 5 may be implemented in a single component, or Figure 5 a single component shown in

[0092] Figure 6 FIG. 600 is a diagram illustrating an example of a hardware implementation of a device 502' employing a processing system 602. The device 502' may be a UE (e.g., UE 120).

[0093] The processing system 602 can be implemented to have a bus architecture generally represented by a bus 604. Depending on the specific application and overall design constraints of the processing system 602, the bus 604 can include any number of interconnecting buses and bridges. The bus 604 links together various circuits, including one or more processors and / or hardware components (represented by the processor 606, components 504, 506, and / or 508, and the computer-readable medium / memory 608). The bus 604 can also link various other circuits, such as a timing source, peripherals, voltage regulators, and power management circuits, which are well known in the art and thus will not be described further.

[0094] The processing system 602 can be coupled to a transceiver 610. The transceiver 610 is coupled to one or more antennas 612. The transceiver 610 provides means for communicating with various other devices via a transmission medium. The transceiver 610 receives signals from the one or more antennas 612, extracts information from the received signals, and provides the extracted information to the processing system 602 (specifically, the receiving component 504). Additionally, the transceiver 610 receives information from the processing system 602 (specifically, the transmitting component 508) and generates signals to be applied to the one or more antennas 612 based at least in part on the received information. The processing system 602 includes a processor 606 coupled to the computer-readable medium / memory 608. The processor 606 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory 608. The software, when executed by the processor 606, causes the processing system 602 to perform the various functions described herein for any particular device. The computer-readable medium / memory 608 can also be used to store data manipulated by the processor 606 when executing the software. The processing system further includes at least one of the components 504, 506, and / or 508. The components can be software modules running in the processor 606, software modules resident / stored in the computer-readable medium / memory 608, one or more hardware modules coupled to the processor 606, or some combination thereof. The processing system 602 can be a component of the UE 120 and can include the memory 282 and / or at least one of the following: the TX MIMO processor 266, the RX processor 258, and / or the controller / processor 280.

[0095] In some aspects, a device 502 / 502' for wireless communication includes: means for receiving control information that identifies a set of parameters associated with a narrowband downlink shared channel modulated with at least 16-QAM; means for determining a communication configuration for the narrowband downlink shared channel based at least in part on the control information that identifies the set of parameters associated with the narrowband downlink shared channel, and so on. In some aspects, the means for determining the communication configuration includes: means for determining the communication configuration based at least in part on overhead associated with time and frequency resources available for narrowband downlink shared channel transmission. The foregoing means may be one or more of the foregoing components of device 502 and / or processing system 602 of device 602' configured to perform the functions recited by the foregoing means. As described elsewhere herein, processing system 602 may include TX MIMO processor 266, RX processor 258, and / or controller / processor 280. In one configuration, the foregoing means may be TX MIMO processor 266, RX processor 258, and / or controller / processor 280 configured to perform the functions and / or operations described herein.

[0096] Figure 6 are provided as examples. Other examples may be different from the examples described in connection with Figure 6 those described.

[0097] A general overview of some aspects of the present disclosure is provided below:

[0098] Aspect 1: A wireless communication method includes: receiving, by a user equipment (UE), control information that identifies a set of parameters associated with a narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM); and determining, by the UE, a communication configuration for the narrowband downlink shared channel based at least in part on the control information that identifies the set of parameters associated with the narrowband downlink shared channel.

[0099] Aspect 2: The method of aspect 1, further comprising: transmitting an indicator of 16-QAM reception capability; and wherein receiving the control information includes: receiving the control information as a response to the transmission of the indicator of 16-QAM reception capability, wherein receiving the control information includes: receiving the control information as a response to the transmission of the indicator of 16-QAM reception capability.

[0100] Aspect 3: The method of any one of aspects 1 to 2, wherein the control information is downlink control information (DCI), and the UE is configured to parse bits of the DCI based at least in part on a configuration of the control information, wherein each configuration is determined from a subset of candidate configurations of the DCI for a narrowband downlink shared channel modulated with at least quadrature phase shift keying (QPSK).

[0101] Aspect 4: The method of Aspect 3, wherein the candidate configuration includes an association with at least one of the following: a paging radio network temporary identifier (RNTI), a random access RNTI, a cell RNTI, a temporary cell RNTI, a system information RNTI, a single cell point-to-multipoint (SC-PTM) control information RNTI, a group RNTI (G-RNTI), or a preconfigured uplink resource (PUR) cell RNTI (PUR C-RNTI).

[0102] Aspect 5: The method of Aspect 3, wherein the candidate configuration includes an association with at least one of a DCI format or a search space type.

[0103] Aspect 6: The method of any one of Aspects 1 to 5, wherein determining the communication configuration includes determining at least one of the following: a modulation order, a transport block size, or a number of subframes in a transport block.

[0104] Aspect 7: The method of any one of Aspects 1 to 6, wherein determining the communication configuration includes determining the communication configuration at least in part based on a deployment type.

[0105] Aspect 8: The method of Aspect 7, wherein the deployment type includes at least one of an in-band deployment type, a guard band deployment type, or a stand-alone deployment type.

[0106] Aspect 9: The method of any one of Aspects 1 to 8, wherein determining the communication configuration includes determining the communication configuration at least in part based on a starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of a narrowband downlink shared channel.

[0107] Aspect 10: The method of any one of Aspects 1 to 9, wherein determining the communication configuration includes determining the communication configuration at least in part based on a number of configured reference signal ports in a cell in which the UE is communicating.

[0108] Aspect 11: The method of Aspect 10, wherein the number of configured reference signal ports includes at least one of a narrowband reference signal port or a cell-specific reference signal port.

[0109] Aspect 12: The method of any one of Aspects 1 to 11, wherein determining the communication configuration includes determining the communication configuration at least in part based on an energy metric associated with a configured reference signal in a cell in which the UE is receiving a narrowband downlink shared channel.

[0110] Aspect 13: The method of any one of Aspects 1 to 12, wherein determining the communication configuration includes determining the communication configuration at least in part based on whether a narrowband cell and an underlying full-bandwidth cell of the narrowband cell have the same or different primary cell identifiers (PCIs).

[0111] Aspect 14: A method as in any one of Aspects 1 to 13, wherein determining the communication configuration includes: determining the communication configuration at least in part based on the presence of a narrowband positioning reference signal.

[0112] Aspect 15: A method as in any one of Aspects 1 to 14, wherein determining the communication configuration includes: determining the communication configuration at least in part based on an overhead metric associated with time and frequency resources available for narrowband downlink shared channel transmission.

[0113] Aspect 16: A method as in any one of Aspects 1 to 15, wherein determining the communication configuration includes: determining the communication configuration at least in part based on a group of predefined parameter sets, wherein the predefined parameter sets in the group of predefined parameter sets include at least one of a modulation and coding scheme parameter set, a transport block size parameter set, or a parameter set identifying the number of subframes.

[0114] Aspect 17: A method as in any one of Aspects 1 to 16, wherein the UE is configured to select a predefined parameter set from the group of predefined parameter sets at least in part based on at least one of the following: deployment type, the value of the starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of the narrowband downlink shared channel, or the maximum modulation order.

[0115] Aspect 18: A method as in Aspect 17, wherein the UE is configured to select one or more parameters from the predefined parameter set at least in part based on at least one of the deployment type, the value of the starting OFDM symbol index in a subframe of the narrowband downlink shared channel, or the maximum modulation order.

[0116] Aspect 19: A method as in Aspect 16, wherein the UE is configured to select a predefined parameter set from the group of predefined parameter sets at least in part based on an indication from a higher layer.

[0117] Aspect 20: A method as in Aspect 16, wherein the control information is downlink control information (DCI), and wherein the UE is configured to select a predefined parameter set from the group of predefined parameter sets at least in part based on a set of bits in the DCI.

[0118] Aspect 21: A method as in any one of Aspects 1 to 20, wherein determining the communication configuration includes: determining the communication configuration at least in part based on higher layer parameters that configure the UE to receive the narrowband downlink shared channel.

[0119] Aspect 22: A method as in Aspect 21, wherein the UE is configured to select quadrature phase shift keying (QPSK) modulation and an associated subset of parameters at least in part based on the higher layer parameters being disabled.

[0120] Aspect 23: The method of Aspect 21, wherein the UE is configured to be enabled to select at least 16-QAM modulation at least in part based on a higher layer parameter.

[0121] Aspect 24: The method of Aspect 23, wherein the UE is configured to select a subset of parameters for a parameter set at least in part based on selecting at least 16-QAM modulation.

[0122] Aspect 25: The method of any one of Aspects 1 to 24, wherein determining the communication configuration includes: determining the communication configuration at least in part based on an indication in the control information that identifies a set of fields corresponding to at least one of a modulation and coding scheme, a transport block size, or a number of subframes.

[0123] Aspect 26: The method of any one of Aspects 1 to 25, wherein determining the communication configuration includes: determining a resource allocation configuration.

[0124] Aspect 27: The method of Aspect 26, wherein the resource allocation configuration is selected from a subset of available resource allocation configurations configurable for a narrowband downlink shared channel modulated with a modulation order of at least 2.

[0125] Aspect 28: The method of Aspect 26, wherein the resource allocation configuration includes an indicator of at least one of a number of subframes in a transport block or a number of repetitions of a subframe.

[0126] Aspect 29: The method of any one of Aspects 1 to 28, wherein the control information includes physical layer downlink control information (DCI), and determining the communication configuration includes: interpreting bits of the DCI at least in part based on receiving other control information that configures the UE to receive a narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM).

[0127] Aspect 30: The method of Aspect 29, wherein in the DCI, a modulation and coding scheme field and a number of repetitions field are jointly encoded.

[0128] Aspect 31: The method of Aspect 29, wherein in the DCI, a modulation and coding scheme field and a resource assignment field are jointly encoded.

[0129] Aspect 32: The method of any one of Aspects 1 to 31, wherein the control information is downlink control information (DCI), and wherein determining the communication configuration includes: determining the communication configuration at least in part based on the number of transport blocks scheduled by the DCI.

[0130] Aspect 33: The method of any one of Aspects 1 to 32, wherein the control information is downlink control information (DCI), and wherein determining the communication configuration includes: interpreting bits of the DCI at least in part based on the number of transport blocks scheduled by the DCI.

[0131] Aspect 34: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform the method of one or more of Aspects 1 to 33.

[0132] Aspect 35: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more of Aspects 1 to 33.

[0133] Aspect 36: A device for wireless communication, comprising at least one means for performing the method of one or more of Aspects 1 to 33.

[0134] Aspect 37: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1 to 33.

[0135] Aspect 38: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1 to 33.

[0136] Aspect 39: A wireless communication method, comprising: receiving, by a user equipment (UE), control information identifying a set of parameters associated with a narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM); and determining, by the UE, a communication configuration for the narrowband downlink shared channel at least partially based on the control information identifying the set of parameters associated with the narrowband downlink shared channel and at least partially based on an overhead associated with time and frequency resources available for narrowband downlink shared channel transmission.

[0137] Aspect 40: The method of Aspect 39, wherein the overhead is determined at least in part based on at least one of a deployment type, a value of a starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of the narrowband downlink shared channel, or a maximum modulation order.

[0138] Aspect 41: The method of Aspect 40, wherein the deployment type includes at least one of an in-band deployment type, a guard band deployment type, or a stand-alone deployment type.

[0139] Aspect 42: A method as in any one of Aspects 39 to 41, wherein the control information indicates a first modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with lower resource overhead, and a second modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with higher resource overhead.

[0140] Aspect 43: A method as in any one of Aspects 39 to 42, wherein determining the communication configuration includes determining a resource allocation configuration.

[0141] Aspect 44: The method as in Aspect 43, wherein the resource allocation configuration is selected from a subset of available resource allocation configurations for narrowband downlink shared channels that can be modulated using a modulation order of at least 2.

[0142] Aspect 45: A method as in any one of Aspects 43 to 44, wherein the resource allocation configuration includes an indicator of at least one of the number of subframes in a transport block or the number of repetitions of a subframe.

[0143] Aspect 46: A method as in any one of Aspects 43 to 45, wherein the resource allocation configuration indicates that 16-QAM is to be used for a first number of repetitions, and a different modulation and coding scheme is to be used for a second number of repetitions.

[0144] Aspect 47: A method as in any one of Aspects 39 to 46, wherein determining the communication configuration includes determining the communication configuration at least in part based on a group of predefined parameter sets, wherein the predefined parameter sets in the group of predefined parameter sets include at least one of a modulation and coding scheme parameter set, a transport block size parameter set, or a parameter identifying the number of subframes.

[0145] Aspect 48: The method as in Aspect 47, wherein the UE is configured to select a predefined parameter set from the group of predefined parameter sets at least in part based on at least one of the following: deployment type, the value of the starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of the narrowband downlink shared channel, or the maximum modulation order.

[0146] Aspect 49: A method as in any one of Aspects 47 to 48, wherein the UE is configured to select one or more parameters from a predefined parameter set at least in part based on at least one of the deployment type, the value of the starting OFDM symbol index in a subframe of the narrowband downlink shared channel, or the maximum modulation order.

[0147] Aspect 50: A method as in any one of Aspects 47 to 49, wherein the UE is configured to select a predefined parameter set from the group of predefined parameter sets at least in part based on an indication from a higher layer.

[0148] Aspect 51: A method as in any one of Aspects 47 to 50, wherein the control information is downlink control information (DCI), and wherein the UE is configured to select a predefined parameter set from a group of predefined parameter sets at least in part based on a set of bits in the DCI.

[0149] Aspect 52: A method as in any one of Aspects 39 to 51, wherein determining the communication configuration includes determining at least one of the following: modulation order, transport block size, or number of subframes in the transport block.

[0150] Aspect 53: A method as in any one of Aspects 39 to 52, further comprising: transmitting an indicator of 16-QAM reception capability; and wherein receiving the control information includes: receiving the control information as a response to the transmitted indicator of 16-QAM reception capability, wherein receiving the control information includes: receiving the control information as a response to the transmitted indicator of 16-QAM reception capability.

[0151] Aspect 54: A method as in any one of Aspects 39 to 53, wherein the control information is downlink control information (DCI), and the UE is configured to parse the bits of the DCI at least in part based on the configuration of the control information, where each configuration is determined from a subset of candidate configurations of the DCI for a narrowband downlink shared channel modulated with at least quadrature phase shift keying (QPSK).

[0152] Aspect 55: A method as in Aspect 54, wherein the candidate configurations include an association with at least one of the following: paging radio network temporary identifier (RNTI), random access RNTI, cell RNTI, temporary cell RNTI, system information RNTI, single cell point-to-multipoint (SC-PTM) control information RNTI, group RNTI (G-RNTI), or preconfigured uplink resource (PUR) cell RNTI (PUR C-RNTI).

[0153] Aspect 56: A method as in any one of Aspects 54 to 55, wherein the candidate configurations include an association with at least one of DCI format or search space type.

[0154] Aspect 57: A method as in any of Aspects 39 to 56, wherein determining the communication configuration includes determining the communication configuration based at least in part on at least one of the following: the starting orthogonal frequency division multiplexing (OFDM) symbol index in a subframe of a narrowband downlink shared channel; the number of configured reference signal ports in the cell in which the UE is communicating; an energy metric associated with a configured reference signal in the cell in which the UE is receiving the narrowband downlink shared channel; whether the narrowband cell and the underlying full-bandwidth cell of the narrowband cell have the same or different primary cell identifiers (PCIs); the presence of a narrowband positioning reference signal; higher layer parameters that configure the UE to receive the narrowband downlink shared channel; or an indication in control information that identifies a set of fields corresponding to at least one of a modulation and coding scheme, a transport block size, or a number of subframes.

[0155] Aspect 58: A method as in Aspect 57, wherein the number of configured reference signal ports includes at least one of a narrowband reference signal port or a cell-specific reference signal port.

[0156] Aspect 59: A method as in any of Aspects 57 to 58, wherein the UE is configured to select quadrature phase shift keying (QPSK) modulation and an associated subset of parameters based at least in part on being disabled by higher layer parameters, or wherein the UE is configured to select at least 16-QAM modulation based at least in part on being enabled by higher layer parameters.

[0157] Aspect 60: A method as in any of Aspects 39 to 59, wherein the control information includes physical layer downlink control information (DCI), and determining the communication configuration includes: interpreting bits of the DCI based at least in part on receiving other control information that configures the UE to receive a narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM), wherein at least two fields in the DCI are jointly encoded.

[0158] Aspect 61: A method as in any of Aspects 39 to 60, wherein the control information is downlink control information (DCI), and wherein determining the communication configuration includes: determining the communication configuration based at least in part on the number of transport blocks scheduled by the DCI, or interpreting bits of the DCI based at least in part on the number of transport blocks scheduled by the DCI.

[0159] Aspect 62: An apparatus for wireless communication at a device, including: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform a method as in one or more of Aspects 39 to 60.

[0160] Aspect 63: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more of aspects 39 to 60.

[0161] Aspect 64: A device for wireless communication, comprising at least one means for performing the method of one or more of aspects 39 to 60.

[0162] Aspect 65: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the method of one or more of aspects 39 to 60.

[0163] Aspect 66: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of aspects 39 to 60.

[0164] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is an illustration of an example approach. It should be understood that, based on design preferences, the specific order or hierarchy of the individual blocks in these process / flowcharts can be rearranged. Additionally, some blocks may be combined or omitted. The appended method claims present the elements of the various blocks in an exemplary order and are not meant to be limited to the specific order or hierarchy presented.

[0165] 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 readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but are to be accorded the full scope consistent with the language of the claims, wherein the recitation of a singular element is not intended to mean "one and only one" unless specifically stated otherwise, but rather "one or more." 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 superior to other aspects. Unless specifically stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "at least one 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 As, multiple Bs, or multiple Cs. Specifically, combinations such as "at least one of A, B, or C," "at least one of A, B, and C," and "any combination of A, B, C, or thereof" can be A only, B only, C only, 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. Elements of the various aspects described throughout this disclosure that are presently known or later come to be known to those of ordinary skill in the art as structural and functional equivalents 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. No claim element is to be construed as a means-plus-function unless the element is expressly recited using the phrase "means for."

Claims

1. A wireless communication method, comprising: receiving, by a user equipment (UE), control information identifying a set of parameters associated with a first narrowband downlink shared channel modulated with at least 16 - quadrature amplitude modulation (16 - QAM); and determining, by the UE, a resource allocation configuration for the first narrowband downlink shared channel based at least in part on the control information and at least in part on an overhead associated with resources available for 16 - QAM transmission on the first narrowband downlink shared channel, wherein the resource allocation configuration indicates: the number of one or more sub - frames for the first narrowband downlink shared channel, and the repetition number of sub - frames for the 16 - QAM transmission in the one or more sub - frames, and wherein the overhead is at least in part based on a value of a starting orthogonal frequency - division multiplexing (OFDM) symbol index in the sub - frame.

2. The method according to claim 1, wherein the overhead is further at least in part based on at least one of a deployment type or a maximum modulation order.

3. The method according to claim 2, wherein the deployment type includes at least one of an in - band deployment type, a guard - band deployment type, or a stand - alone deployment type.

4. The method according to claim 1, wherein the control information indicates a first modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with lower resource overhead, and a second modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with higher resource overhead.

5. The method according to claim 1, wherein determining the resource allocation configuration comprises: selecting the resource allocation configuration from an available subset of resource allocation configurations including the resource allocation configuration and a second resource allocation configuration, and wherein the second resource allocation configuration may be configured for a second narrowband downlink shared channel modulated with a modulation order of at least 2.

6. The method according to claim 1, wherein the resource allocation configuration indicates that a second modulation and coding scheme is to be used for a second repetition number.

7. The method according to claim 1, wherein determining the resource allocation configuration is further at least in part based on a group of predefined parameter sets, wherein the predefined parameter sets in the group of predefined parameter sets include at least one of a modulation and coding scheme parameter set, a transport block size parameter set, or a parameter set identifying the number of the one or more sub - frames.

8. The method according to claim 7, further comprising: selecting the predefined parameter set from the group of predefined parameter sets based at least in part on at least one of the following: a deployment type, a value of the starting OFDM symbol index in the sub - frame, or a maximum modulation order.

9. The method according to claim 7, further comprising: selecting one or more parameters from the predefined parameter sets based at least in part on at least one of a deployment type, a value of the starting OFDM symbol index in the sub - frame, or a maximum modulation order.

10. The method according to claim 7, further comprising: Select the predefined parameter set from a group of the predefined parameter sets based at least in part on an indication from a higher layer.

11. The method according to claim 7, wherein the control information is downlink control information (DCI), and the method further comprises: Select the predefined parameter set from a group of the predefined parameter sets based at least in part on a set of bits in the DCI.

12. The method according to claim 1, wherein determining the resource allocation configuration is further based at least in part on at least one of the following: Modulation order, Transport block size, or Number of subframes in a transport block.

13. The method according to claim 1, further comprises: Transmit an indicator of 16-QAM reception capability; and wherein receiving the control information is based at least in part on a response to transmitting the indicator of 16-QAM reception capability.

14. The method according to claim 1, wherein the control information is downlink control information (DCI), and the method further comprises: Parse the bits of the DCI based at least in part on a control information configuration of the DCI, wherein the control information configuration is from a subset of candidate control information configurations for a narrowband downlink shared channel including the first narrowband downlink shared channel and a second narrowband downlink shared channel, wherein the second narrowband downlink shared channel is modulated with at least quadrature phase shift keying (QPSK).

15. The method according to claim 14, wherein the subset of candidate control information configurations includes an association with at least one of the following: Paging radio network temporary identifier (RNTI), Random access RNTI, Cell RNTI, Temporary cell RNTI, System information RNTI, Single cell point-to-multipoint (SC-PTM) control information RNTI, Group RNTI (G-RNTI), or Preconfigured uplink resource (PUR) cell RNTI (PUR C-RNTI).

16. The method according to claim 14, wherein the subset of candidate control information configurations includes an association with at least one of a DCI format or a search space type.

17. The method according to claim 1, wherein determining the resource allocation configuration is further based at least in part on at least one of the following: Higher layer parameters that configure the UE to receive the 16-QAM transmission; or An indication in the control information that identifies a set of fields corresponding to the number of the one or more subframes or the repetition number.

18. The method according to claim 1, further comprises: Receive higher layer parameters that configure the UE to receive the 16-QAM transmission, wherein determining the resource allocation configuration comprises: selecting QAM modulation based at least in part on the higher layer parameters being enabled.

19. The method according to claim 1, wherein the control information includes physical layer downlink control information (DCI), and determining the resource allocation configuration comprises: Interpret the bits of the DCI at least in part based on receiving other control information that configures the UE to receive the 16-QAM transmission, where at least two fields in the DCI are jointly encoded.

20. The method according to claim 1, wherein the control information is downlink control information (DCI), and wherein determining the resource allocation configuration comprises: determining the resource allocation configuration at least in part based on the number of transport blocks scheduled by the DCI, or interpreting the bits of the DCI at least in part based on the number of transport blocks scheduled by the DCI.

21. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the one or more processors being configured to: receive control information identifying a set of parameters associated with a first narrowband downlink shared channel modulated with at least 16 quadrature amplitude modulation (16-QAM); and determine a resource allocation configuration for the first narrowband downlink shared channel at least in part based on the control information and at least in part based on the overhead associated with resources available for 16-QAM transmission on the first narrowband downlink shared channel, wherein the resource allocation configuration indicates: the number of one or more subframes in the first narrowband downlink shared channel, and the repetition number of subframes in the one or more subframes for the 16-QAM transmission, and wherein the overhead is at least in part based on the value of the starting orthogonal frequency division multiplexing (OFDM) symbol index in the subframe.

22. The UE according to claim 21, wherein the overhead is at least in part based on at least one of a deployment type or a maximum modulation order.

23. The UE according to claim 22, wherein the deployment type includes at least one of an in-band deployment type, a guard band deployment type, or a stand-alone deployment type.

24. The UE according to claim 21, wherein the control information indicates a first modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with lower resource overhead, and a second modulation and coding scheme table to be used for decoding narrowband downlink shared channel communications with higher resource overhead.

25. The UE according to claim 21, wherein, to determine the resource allocation configuration, the one or more processors are configured to: select the resource allocation configuration from an available subset of resource allocation configurations including the resource allocation configuration and a second resource allocation configuration, and wherein the second resource allocation configuration may be configured for a second narrowband downlink shared channel modulated with a modulation order of at least 2.

26. The UE according to claim 21, wherein the resource allocation configuration indicates that a second modulation and coding scheme is to be used for a second repetition number.

27. The UE according to claim 21, wherein, to determine the resource allocation configuration, the one or more processors are configured to: determine the resource allocation configuration at least in part based on a group of predefined parameter sets, The predefined parameter set in the group of predefined parameter sets includes at least one of a modulation and coding scheme parameter set, a transport block size parameter set, or a parameter set identifying the number of the one or more subframes.

28. The UE according to claim 27, wherein the one or more processors are further configured to: Select the predefined parameter set from the group of predefined parameter sets based at least in part on at least one of: a deployment type, a value of the starting OFDM symbol index in the subframe, or a maximum modulation order.

29. The UE according to claim 27, wherein the one or more processors are further configured to: Select one or more parameters from the predefined parameter set based at least in part on at least one of a deployment type, a value of the starting OFDM symbol index in the subframe, or a maximum modulation order.

30. The UE according to claim 27, wherein the one or more processors are further configured to: Select the predefined parameter set from the group of predefined parameter sets based at least in part on an indication from a higher layer.

31. The UE according to claim 27, wherein the control information is downlink control information (DCI), and the one or more processors are further configured to: select the predefined parameter set from the group of predefined parameter sets based at least in part on a set of bits in the DCI.

32. The UE according to claim 21, wherein the one or more processors are configured to further determine the resource allocation configuration based at least in part on at least one of the following: Modulation order, Transport block size, or Number of subframes in the transport block.

33. The UE according to claim 21, wherein the one or more processors are further configured to: Transmit an indicator of 16-QAM reception capability; and Wherein the one or more processors being configured to receive the control information includes the one or more processors being configured to receive the control information in response to transmitting the indicator of 16-QAM reception capability.

34. The UE according to claim 21, wherein the control information is downlink control information (DCI), and the one or more processors are further configured to: Parse the bits of the DCI based at least in part on a control information configuration of the DCI, Wherein the control information configuration is from a subset of candidate control information configurations for a narrowband downlink shared channel including the first narrowband downlink shared channel and the second narrowband downlink shared channel, Wherein the second narrowband downlink shared channel is modulated with at least quadrature phase shift keying (QPSK).

35. The UE according to claim 34, wherein the subset of candidate control information configurations includes an association with at least one of the following: Paging radio network temporary identifier (RNTI), Random access RNTI, Cell RNTI, Temporary cell RNTI, System information RNTI, Single cell point-to-multipoint (SC-PTM) control information RNTI, Group Radio Network Temporary Identifier (G-RNTI), or Preconfigured Uplink Resource (PUR) Cell Radio Network Temporary Identifier (PUR C-RNTI).

36. The UE according to claim 34, wherein the candidate configuration subset of the control information includes an association with at least one of a DCI format or a search space type.

37. The UE according to claim 21, wherein the one or more processors are configured to further determine the resource allocation configuration based at least in part on at least one of the following: Receiving higher layer parameters that configure the UE to receive the 16-QAM transmission; or An indication in the control information that identifies a set of fields corresponding to the number of the one or more subframes or the repetition number.

38. The UE according to claim 21, wherein the one or more processors are configured to: Receive higher layer parameters that configure the UE to receive the 16-QAM transmission, wherein determining the resource allocation configuration includes: Selecting a QAM modulation based at least in part on the higher layer parameters being enabled.

39. The UE according to claim 21, wherein the control information includes Physical Downlink Control Information (DCI), and the one or more processors are configured to determine the resource allocation configuration includes: The one or more processors are configured to interpret bits of the DCI based at least in part on receiving other control information that configures the UE to receive the 16-QAM transmission, wherein at least two fields in the DCI are jointly encoded.

40. The UE according to claim 21, wherein the control information is Downlink Control Information (DCI), and wherein the one or more processors are configured to determine the resource allocation configuration including the one or more processors being configured to: Determine the resource allocation configuration based at least in part on the number of transport blocks scheduled by the DCI, or Interpret bits of the DCI based at least in part on the number of transport blocks scheduled by the DCI.

41. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions includes: One or more instructions that, when executed by one or more processors of a User Equipment (UE), cause the UE to perform the following operations: Receive control information identifying a set of parameters associated with a first narrowband downlink shared channel modulated with at least 16 Quadrature Amplitude Modulation (16-QAM); and Determine a resource allocation configuration for the first narrowband downlink shared channel based at least in part on the control information and at least in part on an overhead associated with resources available for 16-QAM transmission on the first narrowband downlink shared channel, wherein the resource allocation configuration indicates: The number of one or more subframes in the first narrowband downlink shared channel, and The repetition number of subframes for the 16-QAM transmission in the one or more subframes, and wherein the overhead is at least in part based on a value of a starting Orthogonal Frequency Division Multiplexing (OFDM) symbol index in the subframe.

42. A device for wireless communication, Comprising: means for receiving control information identifying a set of parameters associated with a first narrowband downlink shared channel modulated with at least 16-Quadrature Amplitude Modulation (16-QAM); and means for determining a resource allocation configuration for the first narrowband downlink shared channel, at least in part based on the control information and at least in part based on an overhead associated with resources available for 16-QAM transmission on the first narrowband downlink shared channel, wherein the resource allocation configuration indicates: the number of one or more subframes in the first narrowband downlink shared channel, and the repetition number of subframes for the 16-QAM transmission in the one or more subframes, and wherein the overhead is at least in part based on a value of a starting Orthogonal Frequency Division Multiplexing (OFDM) symbol index in the subframe.

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