Repetition on subcarrier for non-coherent modulation

Abstract

Methods, systems, and devices for wireless communications are described. A transmitting device may encode a set of bits to be transmitted to a receiving device based on a repetition factor. The transmitting device may map the coded set of bits to a subcarrier subset (such as adjacent subcarriers in a set of subcarriers) based on the repetition factor. The transmitting device may generate a signal including the coded set of bits based on the mapping, and transmit the generated signal to the receiving device. A receiving device may receive a modulated signal from the transmitting device, and identify a subcarrier subset including adjacent subcarriers in a set of subcarriers associated with the modulated signal based on the repetition factor. The receiving device may average the subcarrier subsets including the adjacent subcarriers, and demodulate the modulated signal according to the averaged subcarrier subset including the adjacent subcarriers.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. patent application No. 17 / 184,966, entitled “REPETITION ON SUBCARRIERS FOR NONCOHERENT MODULATION,” filed by HORN et al. on February 25, 2021, and U.S. Provisional Patent Application No. 63 / 016,280, entitled “REPETITION ON SUBCARRIERS FOR NONCOHERENT MODULATION,” filed by HORN et al. on April 27, 2020; each of which is assigned to the assignee of this application, and each of which is expressly incorporated herein by reference. Technical Field

[0003] The following relates generally to wireless communications and, more particularly, to repetition on subcarriers for non-coherent modulation.

[0004] background

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems), and fifth generation (5G) systems, which may be referred to as new radio (NR) systems. These systems may use various technologies, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting the communication of multiple communication devices, which may be referred to as user equipment (UE) in addition.

[0006] Overview

[0007] Various aspects of the described technology relate to configuring a communication device to support repetition on subcarriers for non-coherent modulation. By providing repetition on subcarriers for non-coherent modulation, the communication device can reduce the impact of noise associated with various modulation schemes (such as differential phase shift keying (DPSK) modulation). In some examples, the communication device can increase the signal-to-noise ratio (SNR) of the signal by providing repetition of the signal on the subcarrier. The communication device can, for example, be configured to map the signal on multiple adjacent subcarriers according to a repetition factor R. The communication device can be configured with a resource element mapper to apply repetition to the subcarrier to increase the signal margin of the signal (e.g., increase the SNR).

[0008] For example, a communication device may encode a set of bits according to a repetition factor, and may map the coded set of bits to a subset of subcarriers, such as adjacent subcarriers. The communication device may generate a signal including a set of coded bits, and may transmit a signal carrying repeated subcarriers. Additionally or alternatively, the communication device may be configured to receive a signal and identify a subset of adjacent subcarriers (e.g., subcarriers mapped according to a repetition factor R). The communication device may average the signals on adjacent subcarriers, and may demodulate the averaged signal accordingly. As a result, the described techniques may include features for improving wireless communications, and in some examples may improve enhanced efficiency and other benefits for high reliability and low latency wireless communications in 5G systems.

[0009] A method of wireless communication at a transmitting device is described. The method may include encoding a set of bits to be transmitted to a receiving device based at least in part on a repetition factor, mapping the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor, generating a signal including the coded set of bits based at least in part on the mapping, and transmitting the generated signal to the receiving device.

[0010] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to: encode a set of bits to be transmitted to a receiving device based at least in part on a repetition factor; map the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; generate a signal including the coded set of bits based at least in part on the mapping; and transmit the generated signal to the receiving device.

[0011] Another apparatus for wireless communication is described. The apparatus may include: means for encoding a set of bits to be transmitted to a receiving device based at least in part on a repetition factor; means for mapping the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; means for generating a signal including the coded set of bits based at least in part on the mapping; and means for transmitting the generated signal to the receiving device.

[0012] A non-transitory computer-readable medium storing code for wireless communication at a transmitting device is described. The code may include instructions executable by a processor to: encode a set of bits to be transmitted to a receiving device based at least in part on a repetition factor; map the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; generate a signal including the coded set of bits based at least in part on the mapping; and transmit the generated signal to the receiving device.

[0013] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for: identifying a set of data bits associated with a set of coded bits; and recursively mapping the set of data bits to a subset of subcarriers including adjacent subcarriers based at least in part on a repetition factor.

[0014] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media for recursively mapping a set of data bits described herein may further include operations, features, means, or instructions for: mapping a first subset of data bits associated with the set of data bits to a first adjacent subset of subcarriers; and mapping a second subset of data bits associated with the set of data bits to a second adjacent subset of subcarriers based at least in part on the repetition factor.

[0015] Some examples of the methods, devices, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for rate matching the set of coded bits based at least in part on the repetition factor.

[0016] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for: mapping a subset of subcarriers including adjacent subcarriers to a resource block based at least in part on a repetition factor; and generating a signal based at least in part on mapping the subset of subcarriers to the resource block.

[0017] Some examples of methods, devices, and non-transitory computer-readable media for encoding a set of bits described herein may further include operations, features, means, or instructions for increasing a rate of encoding based at least in part on a repetition factor.

[0018] In some examples of the methods, devices, and non-transitory computer-readable media described herein, the encoded rate includes a value less than 1.

[0019] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for identifying a set of bits to be transmitted to a recipient device based at least in part on a repetition factor.

[0020] In some examples of the methods, devices, and non-transitory computer-readable media described herein, the value of the repetition factor is based at least in part on a modulation and coding scheme (MCS) value, a constellation mapping configuration, a frequency allocation parameter, or channel conditions, or any combination thereof.

[0021] In some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein, the mapping includes a non-coherent modulation mapping.

[0022] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a downlink control information (DCI) message including an indication of a repetition factor.

[0023] Some examples of the methods, devices, and non-transitory computer-readable media described herein may further include operations, features, devices, or instructions for the following actions: identifying a repetition factor in a lookup table, wherein encoding a set of bits to be transmitted to a receiving device is based at least in part on identifying the repetition factor in the lookup table.

[0024] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: transmitting a radio resource control (RRC) connection establishment message, the RRC connection establishment message including a parameter set indicating a repetition factor per MCS.

[0025] A method for wireless communication at a receiving device is described. The method may include: receiving a modulated signal from a transmitting device; identifying a subcarrier subset including adjacent subcarriers in a set of subcarriers associated with the modulated signal based at least in part on a repetition factor; averaging the subcarrier subsets including the adjacent subcarriers; and demodulating the modulated signal based on the averaged subcarrier subset including the adjacent subcarriers.

[0026] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to: receive a modulated signal from a transmitting device; identify a subcarrier subset including adjacent subcarriers in a set of subcarriers associated with the modulated signal based at least in part on a repetition factor; average the subcarrier subset including the adjacent subcarriers; and demodulate the modulated signal according to the averaged subcarrier subset including the adjacent subcarriers.

[0027] Another apparatus for wireless communication is described. The apparatus may include: means for receiving a modulated signal from a transmitting device; means for identifying a subcarrier subset including adjacent subcarriers in a set of subcarriers associated with the modulated signal based at least in part on a repetition factor; means for averaging the subcarrier subset including the adjacent subcarriers; and means for demodulating the modulated signal based on the averaged subcarrier subset including the adjacent subcarriers.

[0028] A non-transitory computer-readable medium storing code for wireless communication at a receiving device is described. The code may include instructions executable by a processor to: receive a modulated signal from a transmitting device; identify a subcarrier subset including adjacent subcarriers in a set of subcarriers associated with the modulated signal based at least in part on a repetition factor; average the subcarrier subset including the adjacent subcarriers; and demodulate the modulated signal according to the averaged subcarrier subset including the adjacent subcarriers.

[0029] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for averaging data samples of a subset of subcarriers including adjacent subcarriers, wherein demodulating the modulated signal is based at least in part on averaging data samples of the subset of subcarriers including adjacent subcarriers.

[0030] Some examples of methods, devices (apparatus), and non-transitory computer-readable media for averaging data samples for subsets of subcarriers described herein may further include operations, features, means, or instructions for averaging the data samples based at least in part on a coherent combination of data samples for subsets of subcarriers including adjacent subcarriers.

[0031] Some examples of methods, devices (apparatus), and non-transitory computer-readable media for demodulating a modulated signal described herein may further include operations, features, means, or instructions for demapping an averaged subset of subcarriers including adjacent subcarriers based at least in part on a repetition factor.

[0032] Some examples of the methods, devices, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for decoding an averaged subset of subcarriers including adjacent subcarriers into a set of modulated data bits based at least in part on a repetition factor.

[0033] In some examples of the methods, devices, and non-transitory computer-readable media described herein, the subset of subcarriers includes repeated data based at least in part on a repetition factor.

[0034] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a DCI message including an indication of a repetition factor.

[0035] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for identifying a repetition factor in a lookup table.

[0036] Some examples of the methods, devices (apparatus), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: receiving an RRC connection establishment message, the RRC connection establishment message including a parameter set indicating a repetition factor per MCS. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 and 2

[0013] An example of a wireless communication system supporting repetition on subcarriers for non-coherent modulation in accordance with aspects of the present disclosure is illustrated.

[0039] Figure 3A and 3B

[0013] An example of a resource block configuration supporting repetition on subcarriers for non-coherent modulation in accordance with aspects of the present disclosure is illustrated.

[0040] Figure 4 and 5 An example of a method of supporting repetition on subcarriers for non-coherent modulation in accordance with aspects of the present disclosure is illustrated.

[0041] Figure 6 and 7A block diagram of an apparatus supporting repetition on subcarriers for non-coherent modulation is shown in accordance with aspects of the present disclosure.

[0042] Figure 8 A block diagram of a communication manager supporting repetition on subcarriers for non-coherent modulation is shown in accordance with aspects of the present disclosure.

[0043] Fig. 9 A diagram of a system including a device supporting repetition on subcarriers for non-coherent modulation is shown in accordance with aspects of the present disclosure.

[0044] Figures 10 to 16 A flow chart illustrating a method of supporting repetition on subcarriers for non-coherent modulation in accordance with aspects of the present disclosure is shown.

[0045] Detailed Description

[0046] Some wireless communication systems may include communication devices, such as user equipment (UE) and base stations (e.g., evolved Node B (eNB), next generation Node B, or Gigabit Node B (any of which may be referred to as gNB)) that may support multiple radio access technologies. Examples of radio access technologies include 4G systems (such as long term evolution (LTE) systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). Communication devices may support various modulation schemes (such as non-coherent differential phase shift keying (DPSK) modulation), which may be used to improve efficiency for wireless communications. For example, non-coherent DPSK modulation may be used for high reliability and low latency wireless communications (such as in ultra-reliable low latency communications (URLLC)). As part of DPSK modulation, the communication device may be configured to multiply a subcarrier with a conjugate adjacent subcarrier in the time domain. However, multiplying a subcarrier with a conjugate adjacent subcarrier may adversely affect the signal. For example, multiplying a subcarrier with a conjugate adjacent subcarrier during modulation may also multiply or amplify the noise associated with the adjacent subcarrier. In some situations, such as low signal-to-noise ratio (SNR), the multiplied noise may negatively impact the signaling performance of the communication device.To reduce the impact of the amplified noise, the communication device may increase the signal-to-noise ratio of the signal.

[0047] The communication device may be configured to increase the SNR and gain of the signal by conveying the signal using a number of repetitions that can be configured by a repetition factor R. The communication device may identify a number of information bits and perform channel decoding and rate matching on these information bits according to the repetition factor. The communication device may be configured to determine the repetition based on the repetition factor, and map the rate-matched decoded bits to one or more subcarriers of the resource block via a resource element mapper according to the repetition factor. The communication device generates a signal based on the mapping, wherein the signal includes repeated subcarriers on the resource block. Additionally or alternatively, the communication device may be configured to receive the signal and average information (e.g., data samples) according to the repetition factor R. For example, the communication device may be configured to average the repeated bits (e.g., data samples) received in the signal. The communication device may identify the adjacent subcarriers carrying the repeated bits according to the repetition factor, and may average the values ​​of the adjacent subcarriers based on the repetition. The communication device may demodulate the codeword and estimate the bit according to the mapping.

[0048] Various aspects of the subject matter described in the present disclosure may be implemented to achieve one or more of the following potential advantages, among others. These techniques employed by a communication device may provide benefits and enhancements to the operation of the communication device. For example, the operations performed by the communication device may provide improvements to wireless communications. In some examples, configuring the communication device to provide repetition on subcarriers for non-coherent modulation may support improvements to power consumption, spectral efficiency, and in some examples may promote enhanced efficiency and other benefits for wireless communication operations.

[0049] Various aspects of the present disclosure are initially described in the context of a wireless communication system. For example, various aspects of the present disclosure are described with respect to communications between a transmitter device and a receiver device of a wireless communication system. Various aspects of the present disclosure are further illustrated and described by and with reference to apparatus diagrams, system diagrams, and flow diagrams including process flow diagrams related to repetition on subcarriers for non-coherent modulation from the perspective of both the transmitter device and the receiver device.

[0050] Figure 1 An example of a wireless communication system 100 supporting repetition on subcarriers for non-coherent modulation according to various aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be an LTE network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or an NR network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0051] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may be different forms of devices or devices with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0052] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be different forms of devices or devices with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), such as Figure 1 as shown in .

[0053] Each base station 105 may communicate with the core network 130, or communicate with each other, or both. For example, the base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3 or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105), or indirectly (e.g., via the core network 130), or directly and indirectly on the backhaul link 120 (e.g., via X2, Xn or other interfaces). In some examples, the backhaul link 120 may be or include one or more wireless links. One or more of the base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a B node, an evolved B node (eNB), a next generation B node or a gigabit B node (any of which may be referred to as a gNB), a home B node, a home evolved B node, or other suitable terms.

[0054] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc. The UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as base stations 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc., such as Figure 1 as shown in .

[0055] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support the use of carrier aggregation or multi-carrier operation to communicate with the UE 115. The UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0056] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by UE 115. A carrier may operate in a standalone mode in which initial acquisition and connection may be made by UE 115 via the carrier, or a carrier may operate in a non-standalone mode in which a connection is anchored using a different carrier (e.g., a different carrier of the same or different radio access technology).

[0057] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0058] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) of a carrier of a particular radio access technology. A device (e.g., a base station 105, a UE 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communications on a particular carrier bandwidth, or may be configurable to support communications on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communications via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0059] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system using MCM technology, a resource element may include a code element period (e.g., the duration of a modulation code element) and a subcarrier, where the code element period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the code rate of the modulation scheme, or both). Thus, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 can be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further improve the data rate or data integrity of communication with UE 115.

[0060] One or more parameter designs for a carrier may be supported, where the parameter designs may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs with the same or different parameter designs. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications for a UE 115 may be limited to the one or more active BWPs. The time interval of a base station 105 or a UE 115 may be expressed in multiples of a basic time unit, which may refer to, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of the communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0061] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of code element periods (e.g., depending on the length of the cyclic prefix added before each code element period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini-time slots containing one or more code elements. Excluding the cyclic prefix, each code element period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0062] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0063] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a number of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0064] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with a base station 105 (e.g., on a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) used to distinguish adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. The range of such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area depending on various factors (such as the capabilities of the base station 105). For example, a cell may be or include a building, a subset of a building, or an external space between or overlapping a geographic coverage area 110, as well as other examples.

[0065] A macro cell covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have service subscriptions with a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 (compared to a macro cell), and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A base station 105 may support one or more cells and may also support communications on one or more cells using one or more component carriers.

[0066] In some examples, base stations 105 may be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0067] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and transmissions from different base stations 105 may not be aligned in time in some examples. The techniques described herein may be used for synchronous or asynchronous operation.

[0068] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, field survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0069] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed with a reduced peak rate. Other power saving techniques for UEs 115 include entering a power saving deep sleep mode when not engaged in active communications, operating over a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a subcarrier or resource block set) within a carrier, within a guard band of a carrier, or outside a carrier.

[0070] The wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support URLLC or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private communication or group communication, and may be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo) or mission-critical data (MCData)). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low latency, critical mission and ultra-reliable low latency may be used interchangeably herein.

[0071] In some examples, UE 115 may also be able to communicate directly with other UE 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105, or may not be able to receive transmissions from the base station 105 for other reasons. In some examples, each group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between each UE 115 without involving the base station 105.

[0072] The D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these communications. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units), or with the network, or both via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communications.

[0073] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), and the EPC or 5GC may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a base station 105 associated with the core network 130. User IP packets may be delivered via a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. Operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0074] Some network devices (such as base stations 105) may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or merged into a single network device (e.g., base station 105).

[0075] The wireless communication system 100 may operate using one or more frequency bands in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). The 300 MHz to 3 GHz region is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from about 1 decimeter to 1 meter long. UHF waves may be blocked or redirected by buildings and environmental features, but these waves may penetrate various structures sufficiently for macro cells to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0076] The wireless communication system 100 may also operate in a super high frequency (SHF) zone using a frequency band from 3 GHz to 30 GHz (also known as a centimeter band) or in an extremely high frequency (EHF) zone of a spectrum (e.g., from 30 GHz to 300 GHz) (also known as a millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between UE 115 and base station 105, and the EHF antenna of the corresponding device may be smaller and more closely spaced than the UHF antenna. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted across transmissions using one or more different frequency zones, and the use of frequency bands specified across these frequency zones may vary by country or regulatory agency.

[0077] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) may employ carrier sensing for conflict detection and avoidance. In some examples, operations in an unlicensed band may be based on a carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in a licensed band. Operations in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0078] The base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that can support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having antenna ports of several rows and columns that the base station 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0079] The base station 105 or UE 115 can use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such technology may be referred to as spatial multiplexing. For example, the transmitting device may transmit multiple signals via different antennas or different antenna combinations. Similarly, the receiving device may receive multiple signals via different antennas or different antenna combinations. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0080] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each antenna element may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0081] The base station 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions. For example, the base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as the base station 105) or a receiving device (such as the UE 115)) to identify a beam direction used by the base station 105 for later transmission or reception.

[0082] Some signals, such as data signals associated with a particular recipient device, may be transmitted by base station 105 in a single beam direction, e.g., a direction associated with a recipient device, such as UE 115. In some examples, a beam direction associated with transmissions along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0083] In some examples, transmission by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may transmit a reference signal that may be precoded or unprecoded (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)). The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0084] A receiving device (e.g., UE 115) may try multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a base station 105. For example, the receiving device may try multiple reception directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). The single reception configuration may be aligned on a beam direction determined based on listening according to different reception configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0085] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer can be based on IP. The radio link control (RLC) layer can perform packet segmentation and reorganization to communicate on the logical channel. The media access control (MAC) layer can perform priority handling and multiplex the logical channel into the transport channel. The MAC layer can also use error detection technology, error correction technology, or both to support the retransmission of the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection of the radio bearer that supports the user plane data between the UE 115 and the base station 105 or the core network 130. In the physical layer, the transport channel can be mapped to the physical channel.

[0086] UE 115 and base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood that data is correctly received on communication link 125. HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve the throughput of the MAC layer in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support simultaneous slot HARQ feedback, wherein the device may provide HARQ feedback in a specific time slot for data received in a previous symbol in the time slot. In other cases, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0087] The wireless communication system 100 can support increasing the SNR associated with downlink and uplink communications (also referred to as downlink and uplink signals) by providing repetition of downlink and uplink communications. In some examples, the base station 105 can be referred to as a transmitting device, and the UE 115 can be referred to as a receiving device. In some other examples, the base station 105 can be referred to as a receiving device, and the UE 115 can be referred to as a transmitting device. The base station 105 or the UE 115 or both can map information bits (e.g., control bits, data bits) associated with the signal based on the repetition factor R. The base station 105 or the UE 115 or both can be configured to use a resource element mapper to map the signal to one or more subcarriers associated with a resource grid including one or more resource blocks having a plurality of resource elements.

[0088] The base station 105 or the UE 115 or both may be configured to use a resource element mapper to map a signal to one or more subcarriers in a resource grid according to a repetition factor to increase the SNR and gain of the signal. Additionally or alternatively, the base station 105 or the UE 115 or both may be configured to average received information bits (e.g., control bits, data bits) according to the repetition factor R. For example, the base station 105 or the UE 115 or both may be configured to average repeated information bits (e.g., samples) received in the signal before demodulating the averaged samples. As a result, the wireless communication system 100 may include features for improving wireless communication between the base station 105 and the UE 115, and in some examples may enhance enhanced efficiency and other benefits for high reliability and low latency wireless communication in 5G systems.

[0089] Figure 2 An example of a wireless communication system 200 that supports repetition on subcarriers for non-coherent modulation according to various aspects of the present disclosure is illustrated. The wireless communication system 200 may implement various aspects of the wireless communication system 100 or be implemented by various aspects of the wireless communication system 100, or may implement various aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be examples of the base station 105 and the UE 115 described herein. The wireless communication system 200 may support a variety of radio access technologies, including a 4G system (such as an LTE system, an LTE-A system, or an LTE-APro system), and a 5G system (which may be referred to as an NR system).

[0090] The wireless communication system 200 can support various modulation and demodulation schemes, such as non-coherent DPSK modulation. The base station 105-a or the UE 115-a or both can use non-coherent DPSK modulation to improve efficiency in the wireless communication system 200. For example, non-coherent DPSK modulation can provide high reliability and low latency wireless communication (such as in PDCCH URLLC). In non-coherent DPSK modulation, the base station 105-a or the UE 115-a or both can bypass coherent channel estimation and channel equalization, which can reduce the latency for wireless communication in the wireless communication system 200.

[0091] exist Figure 2In an example of , the base station 105-a may be referred to as a transmitting device, and the UE 115-a may be referred to as a receiving device. In some examples, the base station 105-a may be referred to as a receiving device, and the UE 115-a may be referred to as a transmitting device. The base station 105-a may select one or more subcarriers for a signal 205 carrying information (e.g., control, data) to be transmitted to the UE 115-a. As part of DPSK demodulation, the base station 105-a may combine information (e.g., data bits) of one or more conjugated subcarriers adjacent to one or more selected subcarriers for the signal 205 in the time domain. For example, the base station 105-a may multiply the information (e.g., data) of one or more conjugated subcarriers adjacent in time for each of the one or more selected subcarriers for the signal 205. In some examples, as part of DPSK modulation, portions of the signal 205 may be used as a reference, thereby eliminating the need for additional reference signals. As a result, the UE 115-a may use fewer resources to process the signal 205, and therefore experience power savings.

[0092] Base station 105-a may increase the reliability of DPSK modulation by providing repetition (e.g., symbol period repetition) for signal 205. Signal 205 may be transmitted by subcarrier y k Conjugate with adjacent subcarrier Multiplication gives z k , to define:

[0093] x k =x k-1 s k , k ≥ 0

[0094] x -1 =1

[0095]

[0096]

[0097] where x k represents the modulated signal, s k Indicates data symbol, h k represents the channel, and v k represents noise. The channel values ​​for adjacent subcarriers may be approximately equal (e.g., h k ≈h k-1 ). In DPSK modulation, the data symbol s k Multiply the adjacent subcarrier x R·k-1 (e.g., subcarriers that are adjacent in time). In some examples, since the data is k The phase of is related, so a simple demodulator can be given by:

[0098]

[0099]

[0100] Multiplying adjacent subcarriers during modulation can also make the noise v associated with adjacent subcarriers k To multiply or enlarge (e.g. squared noise), and thereby affects the processing of signal 205.

[0101] To reduce the adverse effects of amplified noise, the base station 105-a may be configured to increase the SNR or gain or both of the signal 205, for example, by transmitting the signal 205 a number of times configured by a repetition factor R. The base station 105-a may process the information bits, such as performing channel decoding and rate matching on the information bits. The base station 105-a may map the rate-matched decoded bits via a resource element mapper based on the repetition factor R. For example, the base station 105-a may map the rate-matched decoded bits to one or more subcarriers of the resource block 210 based on the repetition factor. In some examples, the rate at which the information bits are rate matched may be scaled based on the repetition factor.

[0102] For example, for a repetition factor R=2, the resource element mapper output may be given by:

[0103] x 2k =x 2k-1 s 2k , 2k≥0

[0104] x 2k+1 =x 2k s 2k

[0105] x -1 =1

[0106] where s 2k represents the data symbol, and x 2k represents the modulated signal associated with a given repetition factor. Data symbol s k Multiply the adjacent subcarrier x R·k-1(e.g., subcarriers that are adjacent in time). In some cases, applying repetition can scale the coding rate by a repetition factor. Applying repetition can also reduce the number of subcarriers used to transmit signal 205. In some examples, after applying repetition, the size of resource block 210 may not change, but the data may be repeated based on the repetition factor and mapping. Base station 105-a can transmit the same number of bits to UE 115-a, but in some cases, repetition can increase the code rate. Therefore, base station 105-a can generate a signal (e.g., an orthogonal frequency division multiplexing (OFDM) signal) based on the repetition factor, where signal 205 includes repeated subcarriers on resource block 210.

[0107] The repetition factor R can be configured based on various factors. The repetition factor can be an integer value (e.g., in a case where the corresponding code rate is less than 1). The repetition factor can be predefined or configured based on various aspects in the lookup table. In some examples, the repetition factor can be configured based on a modulation and coding scheme (MCS) value (e.g., where each MCS may have an associated repetition factor). In some other cases, the repetition factor can be configured based on a constellation (e.g., BPK, QPSK, DPSK, etc.) used to map the data bits, or configured for a given frequency allocation of the signal 205. In addition, the repetition factor can be configured based on certain channel conditions (e.g., delay spread, Doppler spread, time offset, etc.) or other factors.

[0108] The base station 105-a may also be configured to communicate repetition factor information to the UE 115-a in a control message, such as in a downlink control information (DCI) message. Alternatively or additionally, the UE 115-a may be configured with a lookup table that the UE 115-a may use to identify the repetition factor. In some examples, the base station 105-a may be configured to transmit an RRC connection establishment message that includes a parameter set indicating a repetition factor per MCS. The UE 115-a may receive an RRC connection establishment message that includes a parameter set indicating a repetition factor per MCS. This may reduce DCI overhead at the expense of lower flexibility. That is, in some cases, the default configuration desired repetition may be changed during a time period based on a delay spread or a Doppler spread. In this way, the base station 105-a may transmit and the UE 115-a may receive a DCI including a repetition factor. In some situations where the channel does not change rapidly, the base station 105-a may transmit a vector of repetition factors per MCS, which may be changed via RRC or MCA-CE messages.

[0109] UE 115-a may receive signal 205 from base station 105-a. In some examples, UE 115-a may be configured to average received data based on a repetition factor R. For example, UE 115-a may be configured to average repeated samples received in signal 205 from base station 105-a. In some examples, UE 115-a may identify adjacent subcarriers containing repeated data based on the repetition factor, and may average the values ​​of the adjacent subcarriers. UE 115-a may input the averaged value to a demodulator, which may demodulate the codewords and estimate the transmitted data bits based on the mapping. UE 115-a may also implement various error checking schemes, or may utilize iterative decoding to increase the reliability of received data.

[0110] As a result, the base station 105-a and the UE 115-a may include features for improving wireless communications between the base station 105-a and the UE 115-a, and in some examples may promote enhanced efficiency for high reliability and low latency wireless communications in 5G systems and other benefits. Although various aspects of transmitting the signal 205 are described from the perspective of the base station 105-a, the UE 115-a may be configured to perform the same or similar operations (or be configured with the same or similar components) for transmitting the signal 205. Similarly, although various aspects of receiving the signal 205 are described from the perspective of the UE 115-a, the base station 105-a may be configured to perform the same or similar operations (or be configured with the same or similar components) for receiving the signal 205.

[0111] Figure 3A An example of a resource block configuration 300-a supporting repetition on subcarriers for non-coherent modulation according to various aspects of the present disclosure is illustrated. The resource block configuration 300-a may implement or be implemented by various aspects of the wireless communication systems 100 and 200, or may implement as described in reference to Figure 1 and 2 Aspects of the described wireless communication systems 100 and 200. For example, the resource block configuration 300-a can be based on a configuration provided by the base station 105 and implemented by the base station 105 or the UE 115 or both. The base station 105 or the UE 115 or both can support wireless communication using the resource block configuration 300-a. For example, the base station 105 or the UE 115 or both maps information (e.g., control, data) for wireless communication according to the resource block configuration 300-a.

[0112] exist Figure 3A In the example of FIG. 3 , the resource block configuration 300 - a may correspond to a coherent modulation resource block mapped according to a reference signal. The base station 105 or the UE 115 or both may allocate subcarriers s according to coherent modulation. 00 、s01 、s 10 、s 11 and 30 305, 310, and 315 mapped to the resource block. Each antenna port (e.g., antenna port 1 and antenna port 2) can be associated with a unique reference signal that is specific to the cell. The resource elements of the resource block can be arranged based on the reference signal that is specific to the cell and based on the antenna port arrangement. To mitigate the impact of amplified noise on the signal, the base station 105 or the UE 115 or both can be arranged on the subcarriers s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15, s16, s17, s18, s19, s20, s21, s22, s23, s24, s25, s26, s30, s31, s32, s33, s34, s35, s40, s50, s61, s76 01 、s 10 、s 11 and 30 Repetitions to various locations 305, 310 and 315 of the resource blocks for non-coherent modulation are provided above.

[0113] Figure 3B An example of a resource block configuration 300-b supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is illustrated. The resource block configuration 300-b may implement aspects of wireless communication systems 100 and 200, or may implement as described with reference to FIGS. Figure 1 and 2 Various aspects of the wireless communication systems 100 and 200 described herein may be referred to as Figure 1 and 2 Aspects of the described wireless communication systems 100 and 200 are implemented. For example, the resource block configuration 300-b can be based on a configuration provided by the base station 105 and implemented by the base station 105 or the UE 115 or both. The base station 105 or the UE 115 or both can support wireless communication using the resource block configuration 300-b. For example, the base station 105 or the UE 115 or both map information (e.g., control, data) for wireless communication according to the resource block configuration 300-b.

[0114] exist Figure 3B In the example of , resource block configuration 300-b can correspond to non-coherent modulation. Base station 105 or UE 115 or both can map one or more subcarriers to resource elements in a resource block. For example, according to resource block configuration 300-b, a first position 305 (e.g., a row in a resource block) can include known data (e.g., 1). A second position 310 can include subcarriers s mapped according to the mapping. 10 and 11 The third position 315 may include mapped data subcarriers, where adjacent subcarriers are multiplied according to the mapping configuration (eg, s 10 *s 11 and 11 *s 21The fourth position 320 may include additional mapped data subcarriers, where adjacent subcarriers are multiplied according to the mapping configuration (eg, s 10 *s 20 *s 30 and 11 *s 21 *s 31 ). In some examples, the base station 105 or the UE 115 or both may map data to resource elements in a resource block, and each operation may be repeated according to a repetition rate. For example, the base station 105 or the UE 115 or both may map data to a resource block according to a repetition factor R=2, where each row is repeated twice.

[0115] For example, the first row may include known data (eg, 1) and may be repeated according to the first repetition. The second row may include a first mapped subcarrier and a second mapped subcarrier (s 10 and 11 ), and may be repeated according to the second repetition. The third row may include two multiplied adjacent subcarriers, and may be repeated according to the third repetition (s 10 *s 20 Additional repetitions may include further products of adjacent subcarriers (s 10 *s 20 *s 30 ). Therefore, the base station 105 or the UE 115 or both can be configured to use adjacent subcarriers in the resource block for wireless communication of the signal, and the adjacent subcarriers can use the same communication channel. In order to mitigate the impact of amplified noise on the signal, the base station 105 or the UE 115 or both can provide subcarriers s of the resource block for non-coherent modulation. 00 、s 01 、s 10 、s 11 and 30 repetition on .

[0116] Figure 4 An example of a method 400 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is illustrated. The method 400 may implement aspects of or be implemented by aspects of the wireless communication systems 100 and 200, or may be implemented as described with reference to Figure 1 and 2 The methods 400 and 400 of the present invention may be implemented by a transmitting device (e.g., base station 105, UE 115) or a component thereof as described herein. Figures 6 to 9In some examples, the transmitting device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the transmitting device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0117] The transmitting device may support increasing the SNR or gain or both for signal repetition. The transmitting device may be configured with a resource element mapper that may map information bits (e.g., data bits) associated with one or more subcarriers to adjacent conjugated subcarriers based on a repetition factor R. The resource element mapper may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the resource element mapper may be performed by a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0118] The repetition factor may be predefined. The resource element mapper may map information bits (e.g., data bits) to one or more subcarriers of a resource block to increase signal gain. The transmitting device may also scale the rate at which information bits (e.g., data bits) are rate matched based on the repetition factor. For example, for R=2, the transmitting device may use half of the original subcarriers to transmit information bits (e.g., data bits). In such examples, the size of the resource block may not change, and the total number of information bits (e.g., data bits) may be the same, which may increase the rate according to the repetition factor used (e.g., the rate may be twice the rate before repetition).

[0119] At 405, the transmitting device may decode the information bits c0, c1, ..., c N-1 In some examples, the transmitting device may encode the information bits based on the repetition factor R to generate encoded bits d0, d1, ..., d 3N-1 The channel decoding component may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the channel decoding component may be performed by a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0120] At 410, the transmitting device may rate-match the encoded bits d0, d1, . . . , d3N-1 Perform rate matching. The rate matching component can be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the rate matching component can be performed by a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. In some examples, the channel decoding component can perform 1 / 3 rate encoding. For example, for each single information bit, the channel decoding component can generate three encoded bits. During rate matching, according to the code rate E r The bits are rate matched and the code rate can be scaled by the repetition factor R. For example, the code rate for the input bits can be E r / R-1. After rate matching, bits can be marked as At 415, a repetition factor may be applied to the rate matched bits, and the rate matched bits (denoted as f0, f1, ..., f G-1 , where G is the total number of decoded bits) can be input to the resource element mapper.

[0121] At 415, the transmitting device may map bits to subcarriers via a resource mapper based on a repetition factor R. The resource mapper may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the resource mapper may be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. As an example, for a repetition factor of R=2, the resource element mapper may map two repetitions of data to subcarriers in resource block 425. For example, a first row may include known data (e.g., 1) and may be repeated based on the first repetition. A second row may include a first mapped subcarrier and a second mapped subcarrier (s 10 and 11 ), and may be repeated according to the second repetition. The third row may include two multiplied adjacent subcarriers, and may be repeated according to the third repetition (s 10 *s 20 Additional repetitions may include further products of adjacent subcarriers (s 10 *s 20 *s 30 ). As described herein, the subcarrier may be mapped to resource blocks 425. At 420, the transmitting device may generate an OFDM signal based on the mapping, wherein the OFDM signal carries data repeated according to a repetition factor.

[0122] Figure 5 An example of a method 500 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is illustrated. The method 500 may implement aspects of or be implemented by aspects of the wireless communication systems 100 and 200, or may be implemented as described with reference to Figure 1 and 2 Aspects of the wireless communication systems 100 and 200 described herein. For example, the operations of the method 500 may be implemented by a receiving device (e.g., base station 105, UE 115) or a component thereof as described herein. For example, the operations of the method 500 may be implemented by reference to Figures 6 to 9 In some examples, the receiving device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the receiving device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0123] The receiving device may be configured to average the received data symbols based on the repetition factor R. For example, the receiving device may receive information 505 (e.g., input symbols) from the transmitting device based on the repetition factor. For example, the receiving device may receive a first repetition including samples y1=h1*1+n1 and y0=h0*1+n0, and may average these samples based on the repetition factor at 510 to obtain an average value. The receiving device may further receive a second repetition including samples y3=h3*s0+n3 and y2=h2*s0+n3, and may average these samples according to the repetition factor to obtain an average value The receiving device may average the samples according to the repetition factor (eg, if the repetition factor is R=n, the receiving device may determine the average of n received samples).

[0124] At 515, the receiving device may convert the symbols (identified by averaging) via a demodulator Demodulated to include data subcarrier A subset of . In some cases, the demodulator may multiply adjacent subcarriers and may output an estimate of the signal. The demodulator may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the demodulator may be performed by a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0125] At 520, the receiving device may decode the demodulated data subcarrier via a decoder, which may estimate the received data bits at 525. The decoder may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the decoder may be performed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. In some cases, the receiving device may implement an iterative decoding process based on an error checking process (e.g., a cyclic redundancy check procedure).

[0126] Figure 6 A block diagram 600 of a device 605 supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of a device as described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 620. The device 605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0127] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to repetition on subcarriers for non-coherent modulation, etc.). The information may be passed to other components of the device 605. The receiver 610 may be a reference Fig. 9 Examples of aspects of the described transceiver 920. The receiver 610 may utilize a single antenna or a collection of antennas.

[0128] The communication manager 615 may encode a set of bits to be transmitted to a receiving device based on a repetition factor. The communication manager 615 may map the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based on the repetition factor. The communication manager 615 may generate a signal including the coded set of bits based on the mapping, and transmit the generated signal to the receiving device.

[0129] The communication manager 615 may receive a modulated signal from a transmitting device. The communication manager 615 may identify a subcarrier subset including adjacent subcarriers in a set of subcarriers associated with the modulated signal based on a repetition factor. The communication manager 615 may average the subcarrier subset including the adjacent subcarriers. The communication manager 615 may demodulate the modulated signal according to the averaged subcarrier subset including the adjacent subcarriers. The communication manager 615 may be an example of aspects of the communication manager 910 described herein.

[0130] The communication manager 615 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 615 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), an FPGA or other programmable logic device designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0131] The communication manager 615 or its subcomponents may be physically located at various locations, including being distributed such that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0132] The transmitter 620 can transmit signals generated by other components of the device 605. In some examples, the transmitter 620 can be co-located with the receiver 610 in a transceiver component. For example, the transmitter 620 can be a reference Fig. 9 Examples of aspects of the described transceiver 920. The transmitter 620 may utilize a single antenna or a collection of antennas.

[0133] The communication manager 615 may be implemented as an integrated circuit or chipset for a mobile device modem, and the receiver 610 and the transmitter 620 may be implemented as analog components (e.g., amplifiers, filters, antennas, etc.) coupled to the mobile device modem to achieve wireless transmission and reception. The communication manager 615 as described herein may be implemented to achieve one or more potential advantages. Various implementations may enable increased SNR to be achieved through signal repetition. At least one implementation may enable the communication manager 615 to efficiently implement repetition to several mapped subcarriers of the transmitted signal, and include several silent subcarriers to maintain the total energy of the transmitted signal. At least one implementation may enable the communication manager 615 to map repeated data to resource blocks to increase signal gain. Based on implementing the signal repetition technology as described herein, one or more processors of the device 605 (e.g., processors controlling one or more of the receiver 610, the communication manager 615, and the transmitter 620 or in combination therewith) may increase the SNR and gain of the transmitted signal.

[0134] Figure 7A block diagram 700 of a device 705 supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of the device 605 or device 115 as described herein. The device 705 may include a receiver 710, a communication manager 715, and a transmitter 745. The device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0135] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to repetition on subcarriers for non-coherent modulation, etc.). The information may be passed to other components of the device 705. The receiver 710 may be a reference Fig. 9 Examples of aspects of the described transceiver 920. The receiver 710 may utilize a single antenna or a collection of antennas.

[0136] The communication manager 715 may be an example of aspects of the communication manager 615 as described herein. The communication manager 715 may include an encoder component 720, a mapper component 725, a signal component 730, a carrier component 735, and a demodulation component 740. The communication manager 715 may be an example of aspects of the communication manager 910 described herein.

[0137] The encoder component 720 may encode a set of bits to be transmitted to a receiving device based on a repetition factor. The mapper component 725 may map the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based on the repetition factor. The signal component 730 may generate a signal including the coded set of bits based on the mapping, and transmit the generated signal to the receiving device.

[0138] The signal component 730 may receive a modulated signal from a transmitting device. The carrier component 735 may identify a subcarrier subset including adjacent subcarriers in a subcarrier set associated with the modulated signal based on a repetition factor, and average the subcarrier subset including the adjacent subcarriers. The demodulation component 740 may demodulate the modulated signal according to the averaged subcarrier subset including the adjacent subcarriers.

[0139] The transmitter 745 can transmit signals generated by other components of the device 705. In some examples, the transmitter 745 can be co-located with the receiver 710 in a transceiver component. For example, the transmitter 745 can be a reference Fig. 9 Examples of aspects of the described transceiver 920. The transmitter 745 may utilize a single antenna or a collection of antennas.

[0140] Figure 8A block diagram 800 of a communication manager 805 supporting repetition on subcarriers for non-coherent modulation is shown in accordance with aspects of the present disclosure. The communication manager 805 may be an example of aspects of the communication manager 615, the communication manager 715, or the communication manager 910 described herein. The communication manager 805 may include an encoder component 810, a mapper component 815, a signal component 820, a rate component 825, a bit component 830, a control component 835, a database component 840, a carrier component 845, a demodulation component 850, a demapper component 855, and a decoder component 860. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0141] The encoder component 810 may encode a set of bits to be transmitted to a receiving device based on a repetition factor. In some cases, the value of the repetition factor is based on an MCS value, a constellation mapping configuration, a frequency allocation parameter, or a channel condition, or any combination thereof. The mapper component 815 may map the coded bit set to a subcarrier subset including adjacent subcarriers in a subcarrier set based on the repetition factor. In some examples, the mapper component 815 may identify a set of data bits associated with the coded bit set. In some examples, the mapper component 815 may recursively map the data bit set to a subcarrier subset including adjacent subcarriers based on the repetition factor. The encoder component 810 may transmit an RRC connection establishment message including a parameter set indicating a repetition factor per MCS.

[0142] In some examples, the mapper component 815 may map a first subset of data bits associated with a set of data bits to a first adjacent subset of subcarriers. In some examples, the mapper component 815 may map a second subset of data bits associated with a set of data bits to a second adjacent subset of subcarriers based on a repetition factor. In some examples, the mapper component 815 may map a subset of subcarriers including adjacent subcarriers to a resource block based on a repetition factor. In some examples, the mapper component 815 may generate a signal based on mapping the subset of subcarriers to the resource block. In some cases, the mapping includes non-coherent modulation mapping.

[0143] The signal component 820 may generate a signal including a set of encoded bits based on the mapping. In some examples, the signal component 820 may transmit the generated signal to a receiving device. In some examples, the signal component 820 may receive a modulated signal from a transmitting device. The carrier component 845 may identify a subcarrier subset including adjacent subcarriers associated with the modulated signal in the subcarrier set based on a repetition factor. In some examples, the carrier component 845 may average the subcarrier subset including adjacent subcarriers. In some examples, the carrier component 845 may average data samples of the subcarrier subset including adjacent subcarriers, wherein the demodulated modulated signal is based on averaging data samples of the subcarrier subset including adjacent subcarriers. In some examples, the carrier component 845 may average these data samples based on coherent combinations of data samples of the subcarrier subset including adjacent subcarriers. In some cases, the subcarrier subset includes repeated data based on the repetition factor.

[0144] The demodulation component 850 can demodulate the modulated signal according to the averaged subcarrier subset including adjacent subcarriers. The rate component 825 can rate match the encoded bit set based on the repetition factor. In some examples, the rate component 825 can increase the rate of the encoding based on the repetition factor. In some cases, the encoded rate includes a value less than 1. The bit component 830 can identify the bit set to be transmitted to the receiving device based on the repetition factor. The control component 835 can transmit a DCI message including an indication of the repetition factor. In some examples, the control component 835 can receive a DCI message including an indication of the repetition factor.

[0145] The database component 840 may identify a repetition factor in a lookup table, wherein encoding a set of bits to be transmitted to a recipient device is based on identifying the repetition factor in the lookup table. In some examples, the database component 840 may identify the repetition factor in the lookup table. The demapper component 855 may demap an averaged subset of subcarriers including adjacent subcarriers based on the repetition factor. The decoder component 860 may decode the averaged subset of subcarriers including adjacent subcarriers into a set of modulated data bits based on the repetition factor. The decoder component 860 may receive an RRC connection establishment message including a parameter set indicating a repetition factor per MCS.

[0146] Fig. 9A diagram of a system 900 including a device 905 supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The device 905 may be an example of or include components of the device 605, device 705, or a device as described herein. The device 905 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, a processor 940, and a decoding manager 950. These components may be in electronic communication via one or more buses (e.g., bus 945).

[0147] The communication manager 910 may encode a set of bits to be transmitted to a receiving device based on a repetition factor. The communication manager 910 may map the coded bit set to a subcarrier subset including adjacent subcarriers in a subcarrier set based on the repetition factor. The communication manager 910 may generate a signal including the coded bit set based on the mapping, and transmit the generated signal to the receiving device. Additionally or alternatively, the communication manager 910 may receive a modulated signal from a transmitting device. The communication manager 910 may identify a subcarrier subset including adjacent subcarriers in a subcarrier set associated with the modulated signal based on the repetition factor. The communication manager 910 may average the subcarrier subset including adjacent subcarriers, and demodulate the modulated signal according to the averaged subcarrier subset including adjacent subcarriers. By including or configuring the communication manager 910 according to the example described herein, the device 905 may support technologies for improved communication reliability and reduced latency and other benefits. For example, the device 905 may perform wireless communication with increased reliability based on the use of repetition on subcarriers for non-coherent modulation.

[0148] I / O controller 915 can manage input and output signals of device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can utilize an operating system, such as iOS. ANDROID , MS-DOS 、MS-WINDOWS , OS / 2 ,UNIX 、LINUX , or another known operating system. In other cases, I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0149] The transceiver 920 may communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 920 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 920 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from the antenna. In some cases, the device 905 may include a single antenna 925. However, in some cases, the device 905 may have more than one antenna 925, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0150] The memory 930 may include RAM and ROM. The memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 930 may include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0151] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 935 may not be directly executed by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0152] The processor 940 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks that support repetition on a subcarrier for non-coherent modulation).

[0153] Fig.101 is a flow chart illustrating a method 1000 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure. The operations of the method 1000 may be implemented by a transmitting device (e.g., a base station 105, a UE 115) or a component thereof as described herein. For example, the operations of the method 1000 may be implemented by a transmitting device (e.g., a base station 105, a UE 115) or a component thereof as described herein. Figures 6 to 9 In some examples, the transmitting device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the transmitting device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0154] At 1005, the transmitting device may encode a set of bits to be transmitted to the receiving device based on the repetition factor. The operations of 1005 may be performed according to the methods described herein. In some examples, aspects of the operations of 1005 may be performed as described with reference to Figures 6 to 9 The described encoder component is implemented.

[0155] At 1010, the transmitting device may map the coded bit set to a subcarrier subset including adjacent subcarriers in the subcarrier set based on the repetition factor. The operation of 1010 may be performed according to the method described herein. In some examples, various aspects of the operation of 1010 may be performed as described with reference to Figures 6 to 9 The described mapper component is executed.

[0156] At 1015, the transmitting device may generate a signal including the encoded bit set based on the mapping. The operation of 1015 may be performed according to the method described herein. In some examples, various aspects of the operation of 1015 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0157] At block 1020, the transmitting device may transmit the generated signal to the receiving device. The operations of 1020 may be performed according to the methods described herein. In some examples, aspects of the operations of 1020 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0158] Fig.11 1 is a flow chart illustrating a method 1100 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure. The operations of the method 1100 may be implemented by a transmitting device (e.g., a base station 105, a UE 115) or a component thereof as described herein. For example, the operations of the method 1100 may be implemented by a transmitting device (e.g., a base station 105, a UE 115) or a component thereof as described herein. Figures 6 to 9In some examples, the transmitting device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the transmitting device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0159] At 1105, the transmitting device may encode a set of bits to be transmitted to the receiving device based on the repetition factor. The operations of 1105 may be performed according to the methods described herein. In some examples, aspects of the operations of 1105 may be performed as described with reference to Figures 6 to 9 The described encoder component is implemented.

[0160] At 1110, the transmitting device may identify a set of data bits associated with the set of coded bits. The operations of 1110 may be performed according to the methods described herein. In some examples, aspects of the operations of 1110 may be performed as described with reference to Figures 6 to 9 The described mapper component is executed.

[0161] At 1115, the transmitting device may recursively map the coded bit set to a subcarrier subset including adjacent subcarriers based on the repetition factor. The operation of 1115 may be performed according to the method described herein. In some examples, various aspects of the operation of 1115 may be described as described with reference to Figures 6 to 9 The described mapper component is executed.

[0162] At 1120, the transmitting device may generate a signal including the coded bit set based on the mapping. The operation of 1120 may be performed according to the method described herein. In some examples, various aspects of the operation of 1120 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0163] At block 1125, the transmitting device may transmit the generated signal to the receiving device. The operations of 1125 may be performed according to the methods described herein. In some examples, aspects of the operations of 1125 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0164] Fig.12 A flow chart illustrating a method 1200 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The operations of the method 1200 may be implemented by a transmitting device (e.g., base station 105, UE 115) or a component thereof as described herein. For example, the operations of the method 1200 may be implemented by a transmitting device (e.g., base station 105, UE 115) or a component thereof as described herein. Figures 6 to 9In some examples, the transmitting device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the transmitting device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0165] At 1205, the transmitting device may encode a set of bits to be transmitted to the receiving device based on the repetition factor. The operations of 1205 may be performed according to the methods described herein. In some examples, aspects of the operations of 1205 may be performed as described with reference to Figures 6 to 9 The described encoder component is implemented.

[0166] At 1210, the transmitting device may rate match the coded bit set based on the repetition factor. The operations of 1210 may be performed according to the methods described herein. In some examples, various aspects of the operations of 1210 may be described with reference to Figures 6 to 9 The described rate components are performed.

[0167] At 1215, the transmitting device may map the coded bit set to a subcarrier subset including adjacent subcarriers in the subcarrier set based on the repetition factor. The operation of 1215 may be performed according to the method described herein. In some examples, various aspects of the operation of 1215 may be performed as described with reference to Figures 6 to 9 The described mapper component is executed.

[0168] At 1220, the transmitting device may generate a signal including the coded bit set based on the mapping. The operation of 1220 may be performed according to the method described herein. In some examples, various aspects of the operation of 1220 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0169] At block 1225, the transmitting device may transmit the generated signal to the receiving device. The operations of 1225 may be performed according to the methods described herein. In some examples, aspects of the operations of 1225 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0170] Fig.13 A flow chart illustrating a method 1300 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The operations of the method 1300 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. Figures 6 to 9In some examples, the receiving device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the receiving device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0171] At 1305, the receiving device may receive a modulated signal from the transmitting device. The operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0172] At 1310, the receiving device may identify a subcarrier subset that includes adjacent subcarriers in a subcarrier set associated with the modulated signal based on the repetition factor. The operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be performed as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0173] At 1315, the receiving device may average a subset of subcarriers including adjacent subcarriers. The operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0174] At 1320, the receiving device may demodulate the modulated signal according to the averaged subcarrier subset including adjacent subcarriers. The operations of 1320 may be performed according to the methods described herein. In some examples, aspects of the operations of 1320 may be performed as described with reference to Figures 6 to 9 The demodulation components described are performed.

[0175] Fig.14 A flow chart illustrating a method 1400 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. Figures 6 to 9 In some examples, the receiving device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the receiving device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0176] At 1405, the receiving device may receive a modulated signal from the transmitting device. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0177] At 1410, the receiving device may identify a subcarrier subset that includes adjacent subcarriers in a subcarrier set associated with the modulated signal based on the repetition factor. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0178] At 1415, the receiving device may average a subset of subcarriers including adjacent subcarriers. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0179] At 1420, the receiving device may demodulate the modulated signal according to the averaged subcarrier subset including adjacent subcarriers. The operations of 1420 may be performed according to the methods described herein. In some examples, aspects of the operations of 1420 may be performed as described with reference to Figures 6 to 9 The demodulation components described are performed.

[0180] At 1425, the receiving device may average the data samples of the subcarrier subset including adjacent subcarriers, wherein the demodulated modulated signal is based on averaging the data samples of the subcarrier subset including adjacent subcarriers. The operations of 1425 may be performed according to the methods described herein. In some examples, aspects of the operations of 1425 may be described as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0181] Fig.15 A flow chart illustrating a method 1500 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. Figures 6 to 9 In some examples, the receiving device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the receiving device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0182] At 1505, a receiving device may receive a modulated signal from a transmitting device. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0183] At 1510, the receiving device may identify a subcarrier subset that includes adjacent subcarriers in a subcarrier set associated with the modulated signal based on the repetition factor. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0184] At 1515, the receiving device may average a subset of subcarriers including adjacent subcarriers. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0185] At 1520, the receiving device may demodulate the modulated signal according to the averaged subcarrier subset including adjacent subcarriers. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be performed as described with reference to Figures 6 to 9 The demodulation components described are performed.

[0186] At 1525, the receiving device may demap the averaged subcarrier subset including adjacent subcarriers based on the repetition factor. The operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be performed as described with reference to Figures 6 to 9 The described demapper component is performed.

[0187] Fig.16 A flow chart illustrating a method 1600 for supporting repetition on subcarriers for non-coherent modulation according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a receiving device (e.g., a base station 105, a UE 115) or a component thereof as described herein. Figures 6 to 9 In some examples, the receiving device (e.g., base station 105, UE 115) may execute an instruction set to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the receiving device (e.g., base station 105, UE 115) may use dedicated hardware to perform various aspects of the functions described below.

[0188] At 1605, the receiving device may receive a modulated signal from the transmitting device. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed as described with reference to Figures 6 to 9 The signal components described are executed.

[0189] At 1610, the receiving device may identify a subcarrier subset including adjacent subcarriers in a subcarrier set associated with the modulated signal based on the repetition factor. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0190] At 1615, the receiving device may average a subset of subcarriers including adjacent subcarriers. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be as described with reference to Figures 6 to 9 The described carrier components are implemented.

[0191] At 1620, the receiving device may demodulate the modulated signal according to the averaged subcarrier subset including adjacent subcarriers. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be performed as described with reference to Figures 6 to 9 The demodulation components described are performed.

[0192] At 1625, the receiving device may decode the averaged subcarrier subset including adjacent subcarriers into a modulated data bit set based on the repetition factor. The operations of 1625 may be performed according to the methods described herein. In some examples, aspects of the operations of 1625 may be as described with reference to Figures 6 to 9 The decoder component described is used to perform.

[0193] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0194] The following provides an overview of various aspects of the disclosure:

[0195] Aspect 1: A method for wireless communication at a transmitting device, comprising: encoding a set of bits to be transmitted to a receiving device based at least in part on a repetition factor; mapping the coded set of bits to a subcarrier subset including adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; generating a signal including the coded set of bits based at least in part on the mapping; and transmitting the generated signal to the receiving device.

[0196] Aspect 2: The method of aspect 1, further comprising: identifying a set of data bits associated with the set of coded bits; and recursively mapping the set of data bits to a subset of subcarriers including adjacent subcarriers based at least in part on the repetition factor.

[0197] Aspect 3: A method as in Aspect 2, wherein recursively mapping the data bit set comprises: mapping a first subset of data bits associated with the data bit set to a first adjacent subset of subcarriers; and mapping a second subset of data bits associated with the data bit set to a second adjacent subset of subcarriers based at least in part on the repetition factor.

[0198] Aspect 4: The method of any one of aspects 1 to 3, further comprising: rate matching the set of coded bits based at least in part on the repetition factor.

[0199] Aspect 5: The method of any one of Aspects 1 to 4, further comprising: mapping a subset of subcarriers comprising adjacent subcarriers to a resource block based at least in part on the repetition factor; and generating the signal based at least in part on mapping the subset of subcarriers to the resource block.

[0200] Aspect 6: The method of any one of aspects 1 to 5, wherein encoding the set of bits further comprises: increasing a rate of the encoding based at least in part on the repetition factor.

[0201] Aspect 7: The method according to any one of Aspects 1 to 6, wherein the encoding rate comprises a value less than 1.

[0202] Aspect 8: The method of any one of aspects 1 to 7, wherein identifying the set of bits comprises: identifying the set of bits to be transmitted to the recipient device based at least in part on the repetition factor.

[0203] Aspect 9: The method of any one of Aspects 1 to 8, wherein the value of the repetition factor is based at least in part on an MCS value, a constellation mapping configuration, a frequency allocation parameter, or a channel condition, or any combination thereof.

[0204] Aspect 10: The method according to any one of aspects 1 to 9, wherein the mapping comprises non-coherent modulation mapping.

[0205] Aspect 11: The method of any one of aspects 1 to 10, further comprising: transmitting a DCI message including an indication of the repetition factor.

[0206] Aspect 12: The method of any one of aspects 1 to 11, further comprising: identifying the repetition factor in a lookup table, wherein encoding the set of bits to be transmitted to the recipient device is based at least in part on identifying the repetition factor in the lookup table.

[0207] Aspect 13: The method according to any one of Aspects 1 to 12, further comprising: transmitting an RRC connection establishment message, the RRC connection establishment message comprising a parameter set indicating a repetition factor per MCS.

[0208] Aspect 14: A method for wireless communication at a receiving device, comprising: receiving a modulated signal from a transmitting device; identifying a subcarrier subset including adjacent subcarriers in a subcarrier set associated with the modulated signal based at least in part on a repetition factor; averaging the subcarrier subsets including the adjacent subcarriers; and demodulating the modulated signal based on the averaged subcarrier subset including the adjacent subcarriers.

[0209] Aspect 15: The method of aspect 14, further comprising: averaging data samples of a subset of subcarriers including adjacent subcarriers, wherein demodulating the modulated signal is based at least in part on averaging data samples of a subset of subcarriers including adjacent subcarriers.

[0210] Aspect 16: The method of aspect 15, wherein averaging the data samples of the subset of subcarriers comprises averaging the data samples based at least in part on a coherent combination of the data samples of the subset of subcarriers including adjacent subcarriers.

[0211] Aspect 17: The method of any one of Aspects 14 to 16, wherein demodulating the modulated signal comprises: demapping an averaged subset of subcarriers comprising adjacent subcarriers based at least in part on the repetition factor.

[0212] Aspect 18: The method of any one of Aspects 14 to 17, further comprising: decoding an averaged subset of subcarriers including adjacent subcarriers into a set of modulated data bits based at least in part on the repetition factor.

[0213] Aspect 19: The method of any one of Aspects 14 to 18, wherein the subset of subcarriers comprises repeated data based at least in part on the repetition factor.

[0214] Aspect 20: The method of any one of Aspects 14 to 19, further comprising: receiving a DCI message including an indication of the repetition factor.

[0215] Aspect 21: The method of any one of Aspects 14 to 20, further comprising: identifying the repetition factor in a lookup table.

[0216] Aspect 22: The method according to any one of Aspects 14 to 21, further comprising: receiving an RRC connection establishment message, the RRC connection establishment message comprising a parameter set indicating a repetition factor per MCS.

[0217] Aspect 23: An apparatus for wireless communication, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 1 to 12.

[0218] Aspect 24: An apparatus for wireless communication, comprising at least one means for performing the method as described in any one of Aspects 1 to 12.

[0219] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication at a transmitting device, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 12.

[0220] Aspect 26: An apparatus for wireless communication, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 14 to 21.

[0221] Aspect 27: An apparatus for wireless communication, comprising at least one means for performing the method as described in any one of Aspects 14 to 21.

[0222] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication at a recipient device, the code comprising instructions executable by a processor to perform the method of any one of aspects 14 to 21.

[0223] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applied to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0224] The information and signals described herein may be represented using any of a variety of different techniques and technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0225] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0226] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Other examples and implementations fall within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0227] Computer readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that facilitates computer program to transfer from one place to another place.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.As an example and not limitation, non-transient computer readable medium can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, disk storage or other magnetic storage device, or can be used to carry or store instruction or data structure form of desired program code means and can be accessed by general or special-purpose computer or general or special-purpose processor any other non-transient medium.Similarly, any connection is also properly referred to as computer readable medium.For example, if software is transmitted from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then the coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are just included in the definition of computer readable medium. Disk and disc as used herein include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0228] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0229] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes between similar components. If only the first reference number is used in the specification, the description may apply to any of the similar components having the same first reference number regardless of the second reference number, or other subsequent reference numbers.

[0230] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that can be implemented or fall within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration" and does not mean "better than" or "better than other examples." This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0231] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the universal principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a transmitting device, comprising: encoding a set of data bits to be transmitted to a recipient device using an increased code rate, wherein the increased code rate is based on a code rate scaled by a repetition factor, wherein the increased code rate is greater than the code rate; rate matching a set of encoded data bits based at least in part on a code rate scaled by the repetition factor; mapping the set of encoded data bits to a subset of subcarriers comprising adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; generating a signal comprising the set of encoded data bits based at least in part on the mapping; as well as The signal is transmitted to the recipient device.

2. The method of claim 1, wherein: Mapping the set of encoded data bits further comprises: The set of data bits is recursively mapped to the subset of subcarriers including the adjacent subcarriers based at least in part on the repetition factor.

3. The method of claim 2, wherein: Recursively mapping the set of data bits comprises: mapping a first subset of data bits of the set of data bits to a corresponding first subset of the adjacent subcarriers; and A second subset of data bits of the set of data bits is mapped to a corresponding second subset of the adjacent subcarriers based at least in part on the repetition factor.

4. The method of claim 1, further comprising: mapping the subset of subcarriers including the contiguous subcarriers to a resource block based at least in part on the repetition factor; as well as The signal is generated based at least in part on mapping the subset of subcarriers to the resource blocks.

5. The method of claim 1, wherein: Encoding the set of data bits further comprises: The code rate is increased based at least in part on scaling the code rate by the repetition factor.

6. The method of claim 5, wherein: The code rate scaled by the repetition factor comprises a value less than 1.

7. The method of claim 1, further comprising: The set of data bits to be transmitted to the recipient device is identified based at least in part on the repetition factor.

8. The method of claim 1, wherein: The value of the repetition factor is based at least in part on a modulation and coding scheme value, a constellation mapping configuration, a frequency allocation parameter, or a channel condition, or any combination thereof.

9. The method of claim 1, wherein: The mapping comprises a non-coherent modulation mapping.

10. The method of claim 1, further comprising: A downlink control information message is transmitted including an indication of the repetition factor.

11. The method of claim 1, further comprising: The repetition factor is identified in a lookup table, wherein encoding the set of data bits to be transmitted to the recipient device is based at least in part on identifying the repetition factor in the lookup table.

12. The method of claim 1, further comprising: A radio resource control connection setup message is transmitted, the radio resource control connection setup message including a parameter set indicating the repetition factor per modulation and coding scheme.

13. A method for wireless communication at a receiving device, comprising: receiving a signal from a transmitting device; identifying, based at least in part on the repetition factor, a subset of subcarriers comprising contiguous subcarriers in a set of subcarriers associated with the signal; averaging the subset of subcarriers including the adjacent subcarriers; as well as The signal is demodulated according to an averaged subset of subcarriers that includes the adjacent subcarriers.

14. The method of claim 13, further comprising: Data samples of the subset of subcarriers including the adjacent subcarriers are averaged, wherein demodulating the signal is based at least in part on averaging the data samples of the subset of subcarriers including the adjacent subcarriers.

15. The method of claim 14, wherein: Averaging the data samples of the subset of subcarriers comprises: The data samples are averaged based at least in part on a coherent combination of the data samples of the subset of subcarriers including the adjacent subcarriers.

16. The method of claim 13, wherein: Demodulating the signal comprises: The averaged subset of subcarriers including the adjacent subcarriers is demapped based at least in part on the repetition factor.

17. The method of claim 13, further comprising: The averaged subset of subcarriers including the adjacent subcarriers is decoded into a set of modulated data bits based at least in part on the repetition factor.

18. The method of claim 13, wherein: The subset of subcarriers includes repeated data based at least in part on the repetition factor.

19. The method of claim 13, further comprising: A downlink control information message is received including an indication of the repetition factor.

20. The method of claim 13, further comprising: The repetition factor is identified in a lookup table.

21. The method of claim 13, further comprising: A radio resource control connection setup message is received, the radio resource control connection setup message comprising a parameter set indicating the repetition factor per modulation and coding scheme.

22. A device for wireless communication, comprising: means for encoding a set of data bits to be transmitted to a recipient device using an increased code rate, wherein the increased code rate is based on a code rate scaled by a repetition factor, wherein the increased code rate is greater than the code rate; means for rate matching a set of encoded data bits based at least in part on a code rate scaled by the repetition factor; means for mapping the set of encoded data bits to a subset of subcarriers comprising contiguous subcarriers in a set of subcarriers based at least in part on the repetition factor; means for generating a signal comprising the set of encoded data bits based at least in part on the mapping; as well as means for transmitting the signal to the recipient device.

23. The apparatus of claim 22, wherein: The means for mapping the set of encoded data bits further comprises: Means for recursively mapping the set of data bits to the subset of subcarriers including the adjacent subcarriers based at least in part on the repetition factor.

24. The apparatus of claim 23, wherein: The means for recursively mapping the set of data bits further comprises: means for mapping a first subset of data bits of said set of data bits to a corresponding first subset of said contiguous subcarriers; and Means for mapping a second subset of data bits of the set of data bits to a corresponding second subset of the adjacent subcarriers based at least in part on the repetition factor.

25. The apparatus of claim 22, further comprising: means for mapping the subset of subcarriers including the contiguous subcarriers to a resource block based at least in part on the repetition factor; as well as means for generating the signal based at least in part on mapping the subset of subcarriers to the resource blocks.

26. The apparatus of claim 22, wherein: The means for encoding the set of data bits further comprises: Means for increasing the code rate based at least in part on scaling the code rate by the repetition factor.

27. The apparatus of claim 26, wherein: The code rate scaled by the repetition factor comprises a value less than 1.

28. The apparatus of claim 22, further comprising: means for identifying the set of data bits to be transmitted to the recipient device based at least in part on the repetition factor.

29. The apparatus of claim 22, wherein: The value of the repetition factor is based at least in part on a modulation and coding scheme value, a constellation mapping configuration, a frequency allocation parameter, or a channel condition, or any combination thereof.

30. The apparatus of claim 22, wherein: The mapping comprises a non-coherent modulation mapping.

31. The apparatus of claim 22, further comprising: Means for transmitting a downlink control information message including an indication of the repetition factor.

32. The apparatus of claim 22, further comprising: means for identifying the repetition factor in a lookup table, wherein encoding the set of data bits to be transmitted to the recipient device is based at least in part on identifying the repetition factor in the lookup table.

33. The apparatus of claim 22, further comprising: Means for transmitting a radio resource control connection setup message, the radio resource control connection setup message comprising a parameter set indicating the repetition factor per modulation and coding scheme.

34. A device for wireless communication, comprising: means for receiving a signal from a transmitting device; means for identifying a subset of subcarriers comprising contiguous subcarriers in a set of subcarriers associated with the signal based at least in part on a repetition factor; means for averaging said subset of subcarriers including said adjacent subcarriers; as well as Means for demodulating the signal according to an averaged subset of subcarriers including the adjacent subcarriers.

35. The apparatus of claim 34, further comprising: means for averaging data samples of the subset of subcarriers including the adjacent subcarriers, wherein demodulating the signal is based at least in part on averaging the data samples of the subset of subcarriers including the adjacent subcarriers.

36. The apparatus of claim 35, wherein the means for averaging the data samples for the subset of subcarriers further comprises: Means for averaging the data samples based at least in part on coherent combining of the data samples of the subset of subcarriers including the adjacent subcarriers.

37. An apparatus for wireless communication, comprising: one or more processors; a memory coupled to the one or more processors; as well as instructions stored in the memory and executable by the one or more processors to cause the apparatus to: encoding a set of data bits to be transmitted to a recipient device using an increased code rate, wherein the increased code rate is based on a code rate scaled by a repetition factor, wherein the increased code rate is greater than the code rate; rate matching a set of encoded data bits based at least in part on a code rate scaled by the repetition factor; mapping the set of encoded data bits to a subset of subcarriers comprising adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; generating a signal comprising the set of encoded data bits based at least in part on the mapping; as well as The signal is transmitted to the recipient device.

38. An apparatus for wireless communication, comprising: one or more processors; a memory coupled to the one or more processors; as well as instructions stored in the memory and executable by the one or more processors to cause the apparatus to: receiving a signal from a transmitting device; identifying, based at least in part on the repetition factor, a subset of subcarriers comprising contiguous subcarriers in a set of subcarriers associated with the signal; averaging the subset of subcarriers including the adjacent subcarriers; as well as The signal is demodulated according to an averaged subset of subcarriers that includes the adjacent subcarriers.

39. A non-transitory computer-readable medium storing code for wireless communication at a transmitting device, the code comprising instructions executable by a processor to: encoding a set of data bits to be transmitted to a recipient device using an increased code rate, wherein the increased code rate is based on a code rate scaled by a repetition factor, wherein the increased code rate is greater than the code rate; rate matching a set of encoded data bits based at least in part on a code rate scaled by the repetition factor; mapping the set of encoded data bits to a subset of subcarriers comprising adjacent subcarriers in a set of subcarriers based at least in part on the repetition factor; generating a signal comprising the set of encoded data bits based at least in part on the mapping; as well as The signal is transmitted to the recipient device.

40. A non-transitory computer-readable medium storing code for wireless communication at a recipient device, the code comprising instructions executable by a processor to: receiving a signal from a transmitting device; identifying, based at least in part on the repetition factor, a subset of subcarriers comprising contiguous subcarriers in a set of subcarriers associated with the signal; averaging the subset of subcarriers including the adjacent subcarriers; and The signal is demodulated according to an averaged subset of subcarriers that includes the adjacent subcarriers.

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