Uplink hybrid automatic repeat request retransmission scheduling in networks with large propagation delay

Abstract

In summary, various aspects of the present disclosure relate to wireless communications. In some aspects, a user equipment (UE) may transmit a first physical uplink shared channel (PUSCH) to a base station using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance. The UE may receive downlink control information (DCI) from the base station before expiration of a round-trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance. The UE may transmit a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a hybrid automatic repeat request process indicated in the DCI. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. non-provisional patent application No. 17 / 248,110, filed on January 8, 2021, entitled “UPLINK HYBRID AUTOMATIC REPEAT REQUEST RETRANSMISSION SCHEDULING IN A NETWORK WITH A LARGEPROPAGATION DELAY,” and is hereby expressly incorporated herein by reference. Technical Field

[0003]

[0004] Generally speaking, aspects of the present disclosure relate to wireless communications, and aspects of the present disclosure relate to techniques and apparatus for uplink hybrid automatic repeat request (HARQ) retransmission scheduling in networks with large propagation delays. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) that can support communications for multiple user equipment (UEs). UEs can communicate with a BS via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, and an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at a city, country, region, and even global level. NR (which may also be referred to as 5G) is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), thereby better supporting mobile broadband Internet access, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] In some aspects, a user equipment (UE) for wireless communication includes: a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: transmit a first physical uplink shared channel (PUSCH) to a base station using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance; receive downlink control information (DCI) from the base station before expiration of a round trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; and transmit a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a hybrid automatic repeat request (HARQ) process indicated in the DCI.

[0008] In some aspects, a method of wireless communication performed by a UE includes: sending a first PUSCH to a base station using one or more PHY parameters associated with a first BLER target performance; receiving, from the base station before expiration of a round-trip timer associated with the first PUSCH, a DCI that schedules a second PUSCH and configures one or more PHY parameters associated with a second BLER target performance; and sending a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a HARQ process indicated in the DCI.

[0009] In some aspects, an apparatus for wireless communication includes: means for transmitting a first PUSCH to a base station using one or more PHY parameters associated with a first BLER target performance; means for receiving a DCI from the base station before expiration of a round trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; and means for transmitting a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a HARQ process indicated in the DCI.

[0010] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: transmit a first PUSCH to a base station using one or more PHY parameters associated with a first BLER target performance; receive, from the base station before expiration of a round-trip timer associated with the first PUSCH, a DCI that schedules a second PUSCH and configures one or more PHY parameters associated with a second BLER target performance; and transmit a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a HARQ process indicated in the DCI.

[0011] In summary, aspects include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to and as illustrated by the accompanying figures and description.

[0012] The foregoing has outlined rather broadly the features and technical advantages of the examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be readily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood from the description below. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to fully understand the above-mentioned features of the present disclosure, a more detailed description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are shown in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope of the present disclosure, as the description may admit other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0014] Figure 1 is a diagram illustrating an example of a wireless network in accordance with various aspects of the present disclosure.

[0015] Figure 2 is a diagram illustrating an example of communication between a base station and a UE in a wireless network according to various aspects of the present disclosure.

[0016] Figure 3 is a diagram illustrating an example of a regenerative satellite deployment and an example of a transparent satellite deployment in a non-terrestrial network according to various aspects of the present disclosure.

[0017] Figure 4 is a diagram illustrating an example of downlink control information (DCI) including a new transmission grant and an example of DCI including a retransmission grant in a network with a large propagation delay according to various aspects of the present disclosure.

[0018] Figure 5 is a diagram illustrating examples associated with uplink hybrid automatic repeat request (HARQ) retransmission scheduling in a network with large propagation delay in accordance with various aspects of the present disclosure.

[0019] Figure 6 is a diagram illustrating example procedures associated with uplink HARQ retransmission scheduling in a network with large propagation delay, in accordance with various aspects of the present disclosure.

[0020] Figure 7-8 is a block diagram of an example apparatus for wireless communication in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION

[0021] The following describes various aspects of the present disclosure in more detail with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. More specifically, these aspects are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether that aspect is implemented independently of any other aspect of the present disclosure or is implemented in combination with any other aspect. For example, a device can be implemented or a method can be implemented using any number of aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0022] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements") and illustrated in the accompanying drawings. These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0023] It should be noted that while various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0024] Figure 1is a schematic diagram illustrating an example of a wireless network 100 according to various aspects of the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, among other examples. The wireless network 100 may include multiple base stations 110 (illustrated as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0025] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in FIG, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0026] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (such as direct physical connections or virtual networks) using any suitable transport network.

[0027] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, relay, etc.

[0028] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0029] The network controller 130 may be coupled to a group of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate directly or indirectly with each other via a wireless or wired backhaul.

[0030] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or apparatus, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music or video device, or a satellite radio unit, etc.), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0031] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120 (such as a processor component and / or a memory component). In some aspects, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0032] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RATs can also be referred to as radio technologies, air interfaces, etc. Frequencies can also be referred to as carriers, frequency channels, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0033] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, the UEs 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), and / or mesh networks. In this case, the UEs 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0034] Devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, devices of the wireless network 100 can communicate using an operating band having a first frequency range (FR1) (which can span from 410 MHz to 7.125 GHz) and / or can communicate using an operating band having a second frequency range (FR2) (which can span from 24.25 GHz to 52.6 GHz). Frequencies between FR1 and FR2 are sometimes referred to as intermediate frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is often referred to as a "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Thus, unless expressly stated otherwise, it should be understood that the terms “sub-6 GHz,” etc., if used herein, may broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or intermediate frequencies (e.g., greater than 7.125 GHz). Similarly, unless expressly stated otherwise, it should be understood that the terms “millimeter wave,” etc., if used herein, may broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0035] As pointed out above, Figure 1 is provided as an example. Other examples may differ from those described in relation to Figure 1 Examples described.

[0036] Figure 2 1 is a diagram illustrating an example of a base station 110 in communication with a UE 120 in a wireless network 100 according to various aspects of the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where, in general, T ≥ 1 and R ≥ 1.

[0037] At the base station 110, the transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0038] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a channel quality indicator (CQI) parameter, among other examples. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0039] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0040] The antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or may be included within one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, among other examples. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmit and / or receive components such as Figure 2 One or more antenna elements of one or more components).

[0041] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any method described herein (e.g., as described with reference to FIG. Figure 5-6 description).

[0042] At base station 110, uplink signals from UE 120 and other UEs may be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in a modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any method described herein (e.g., as described with reference to FIG. Figure 5-6 description).

[0043] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components in the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with uplink hybrid automatic repeat request (HARQ) retransmission scheduling in networks with large propagation delays, as described in more detail elsewhere herein. Figure 2 Any other component in may perform or direct e.g. Figure 6 600 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communications. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of base station 110 and / or UE 120, may cause the one or more processors, UE 120, and / or base station 110 to perform or instruct, e.g. Figure 6 The operations of process 600 and / or other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, among other examples.

[0044] In some aspects, the UE 120 includes: means for transmitting a first physical uplink shared channel (PUSCH) to the base station 110 using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance; means for receiving downlink control information (DCI) from the base station 110 before expiration of a round trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; and / or means for transmitting a second PUSCH to the base station 110 using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a HARQ process indicated in the DCI. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0045] In some aspects, UE 120 includes: a unit for receiving radio resource control (RRC) signaling from base station 110, the RRC signaling indicating one or more HARQ processes to support scheduling a new PUSCH transmission before expiration of a round-trip timer for a previous transmission; and / or a unit for determining that the DCI includes an uplink grant for the new transmission based at least in part on the one or more HARQ processes indicated in the RRC signaling including the HARQ process indicated in the DCI.

[0046] In some aspects, UE 120 includes: means for receiving RRC signaling from base station 110 that configures UE 120 to monitor for a DCI format indicating different PHY parameters before expiration of a round trip timer for a previous transmission; and / or means for determining, based at least in part on the DCI received from base station 110 having a DCI format indicating different PHY parameters, that the DCI configures one or more PHY parameters associated with a second BLER target performance.

[0047] In some aspects, UE 120 includes: means for receiving RRC signaling from base station 110 that configures bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters before expiration of a round trip timer for a previous transmission; and / or means for determining that the DCI configures the one or more PHY parameters associated with the second BLER target performance based at least in part on the bits in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters.

[0048] In some aspects, UE 120 includes: a unit for determining that a HARQ process indicated in a DCI received before expiration of a round-trip timer is associated with a first PUSCH; and / or a unit for determining that the DCI includes an uplink grant for a new transmission based at least in part on the base station 110 previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0049] In some aspects, the UE 120 includes: a unit for determining that the HARQ process indicated in the DCI received before expiration of the round-trip timer is associated with the first PUSCH; and / or a unit for determining that the DCI includes only uplink grants for retransmissions of the first PUSCH based at least in part on the base station 110 not previously scheduling at least one retransmission of the first PUSCH and not configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0050] In some aspects, the UE 120 includes: means for determining, based at least in part on receiving the DCI while the round trip timer is running or while an offset timer that delays the start of the round trip timer is running, that one or more PHY parameters configured in the DCI represent a new set of PHY parameters for retransmission of the first PUSCH.

[0051] In some aspects, the UE 120 includes means for determining, based at least in part on receiving the DCI while the discontinuous reception retransmission timer is running, that one or more PHY parameters configured in the DCI represent one or more PHY parameters associated with a first BLER target performance.

[0052] Although Figure 2 The blocks in FIG. 2 are shown as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0053] As pointed out above, Figure 2 is provided as an example. Other examples may differ from those described in relation to Figure 2 Examples described.

[0054] Figure 3 is a diagram illustrating an example 300 of a regenerative satellite deployment and an example 310 of a transparent satellite deployment in a non-terrestrial network.

[0055] Example 300 illustrates a regenerative satellite deployment. In example 300, UE 120 is served by satellite 320 via serving link 330. For example, satellite 320 may include BS 110 (e.g., BS 110a) or a gNB. In some aspects, satellite 320 may be referred to as a non-terrestrial base station, a regenerative repeater, and / or an onboard processing repeater, among other examples. In some aspects, satellite 320 may demodulate uplink RF signals and may modulate baseband signals derived from the uplink RF signals to produce downlink RF transmissions. Satellite 320 may transmit downlink RF signals over serving link 330. Satellite 320 may provide cell coverage for UE 120.

[0056] Example 310 illustrates a transparent satellite deployment, which may also be referred to as a bent-pipe satellite deployment. In example 310, UE 120 is served by satellite 340 via service link 330. Satellite 340 may be a transparent satellite. Satellite 340 may relay signals received from gateway 350 via feeder link 360. For example, satellite 340 may receive RF transmissions from gateway 350 via feeder link 360 and may relay the RF transmissions to UE 120 via service link 330 without demodulating the RF transmissions. Additionally or alternatively, satellite 340 may receive RF transmissions from UE 120 via service link 330 and may relay the RF transmissions to gateway 350 via feeder link 360 without demodulating the RF transmissions. In some aspects, the satellite may convert the frequency of the RF transmissions received on service link 330 to the frequency of the RF transmissions of feeder link 360 (or vice versa) and may amplify and / or filter the relayed RF transmissions. In some aspects, the UE 120 shown in examples 300 and 310 may be associated with Global Navigation Satellite System (GNSS) capabilities or Global Positioning System (GPS) capabilities, although not all UEs have such capabilities. Satellites 340 may provide cell coverage for the UE 120.

[0057] like Figure 3 As shown, service link 330 may include a link between satellite 340 and UE 120 and may include one or more of an uplink or a downlink. Feeder link 360 may include a link between satellite 340 and gateway 350 and may include one or more of an uplink (e.g., from UE 120 to gateway 350) or a downlink (e.g., from gateway 350 to UE 120). Figure 3 , the uplink of the service link 330 is indicated by reference numeral 330-U, and the downlink of the service link 330 is indicated by reference numeral 330-D. Similarly, the uplink of the feeder link 360 is indicated by reference numeral 360-U, and the downlink of the feeder link 360 is indicated by reference numeral 360-D.

[0058] Due to the movement of satellites 320 and 340 and the potential movement of UE 120, feeder link 360 and service link 330 may each experience a Doppler effect. The Doppler effect may be significantly greater than the Doppler effect in terrestrial networks. The Doppler effect on feeder link 360 can be compensated to some extent, but may still be associated with a certain amount of uncompensated frequency error. In addition, gateway 350 may be associated with residual frequency error, and / or satellites 320 / 340 may be associated with airborne frequency error. These frequency error sources may cause the received downlink frequency at UE 120 to drift from the target downlink frequency. In addition, due to the long distance between UE 120 and satellites 320 / 340, communications in non-terrestrial networks may be associated with longer delays (e.g., longer latency and / or round-trip time) than terrestrial networks. Delays may be even greater in transparent satellite deployments because any communication between UE 120 and gateway 350 may travel over service link 330 and feeder link 360, each of which may be associated with longer delays than terrestrial networks. Large propagation delays in non-terrestrial networks may cause various challenges, including how to schedule uplink HARQ transmissions before decoding results are known for previous uplink transmissions.

[0059] As pointed out above, Figure 3 is provided as an example. Other examples may differ from those described in relation to Figure 3 Examples described.

[0060] Figure 4 is a diagram illustrating an example 400 of DCI including a new transmission grant and an example 450 of DCI including a retransmission grant in a network with large propagation delay (eg, a non-terrestrial network) in accordance with various aspects of the present disclosure.

[0061] As in Figure 4 In and as shown by example 400, a base station may dynamically disable HARQ retransmissions for a first physical uplink shared channel (PUSCH) by sending a DCI to a UE that includes an uplink grant to schedule a new PUSCH (e.g., a new transport block) before determining a decoding result of the first PUSCH. For example, the base station may initially send a DCI to the UE that schedules the first PUSCH and indicates one or more physical layer (PHY) parameters to be used for the first PUSCH. The first PUSCH may be associated with a HARQ process that corresponds to a buffer in which the UE stores the corresponding transport block. Figure 4As shown, after the UE performs the original transmission of the first PUSCH, the UE starts a round trip timer (RTT), which can be restarted if another PUSCH is sent while the round trip timer is running (e.g., a retransmission or new transmission of the first PUSCH). When the round trip timer expires, the UE can start a discontinuous reception (DRX) retransmission timer, and the UE can expect an uplink grant for retransmission only when the DRX retransmission timer is running. In other words, the UE generally does not expect any scheduling while the round trip timer is running and before the DRX retransmission timer is started. However, in some cases, the wireless network can enable the base station to send DCI to schedule a new PUSCH transmission (e.g., to enable earlier transmission of a new transport block) while the round trip timer associated with the HARQ process is running, which dynamically disables the retransmission of the first PUSCH associated with the HARQ process.

[0062] Therefore, in the case where the base station sends DCI to the UE to schedule a new PUSCH associated with the same HARQ process as the first PUSCH in a network with large propagation delay, problems may arise because the new PUSCH may be scheduled before the base station receives the first PUSCH and / or determines whether to successfully decode the first PUSCH. For example, when the base station schedules the second PUSCH using the same HARQ process as the first PUSCH, retransmission of the first PUSCH is disabled because the transport block carried in the first PUSCH is cleared from the buffer corresponding to the HARQ process and replaced by the transport block to be carried in the second PUSCH. Therefore, if the base station does not receive and / or fails to successfully decode the first PUSCH, the first PUSCH will be lost, which is particularly undesirable for high-priority uplink traffic (e.g., radio resource control (RRC) messages).

[0063] In addition, in the case where the base station sends a DCI including a retransmission grant for the first PUSCH after the DRX retransmission timer has started, the UE retransmits the second PUSCH because the transport block of the second PUSCH is stored in the buffer corresponding to the HARQ process of the retransmission grant, even if the base station expects retransmission of the first PUSCH. Additionally or alternatively, if the DCI scheduling the original transmission of the second PUSCH is lost (e.g., not received and / or successfully decoded by the UE), the retransmission grant for the HARQ process shared by the first PUSCH and the second PUSCH may cause the UE to retransmit the first PUSCH even if the base station expects retransmission of the second PUSCH.

[0064] In addition, in some cases, the base station may indicate different physical layer (PHY) configurations for the first PUSCH and the second PUSCH when sending the DCI to schedule the second PUSCH as a new transmission. For example, as described above, sending the DCI for scheduling the second PUSCH using the same HARQ process as the first PUSCH disables retransmission of the first PUSCH, which may occur when one or more reliability and / or coverage enhancements are enabled for the first PUSCH (e.g., slot aggregation with multiple repetitions, frequency hopping, and / or high transmit power, among other examples). However, a different (e.g., less reliable) PHY configuration may be indicated for the second PUSCH because the HARQ retransmissions for the second PUSCH may be scheduled after the DRX retransmissions have begun. Therefore, in some cases, the block error rate (BLER) target performance of the first PUSCH may be different from the BLER target performance of the second PUSCH, and thus the DCI for scheduling the original transmission of the second PUSCH may indicate a different PHY configuration than the first PUSCH. However, existing DCI formats generally lack the ability to indicate that the scheduling DCI for a specific HARQ process indicates a new PHY configuration.

[0065] Thus, in the event that the UE receives a DCI scheduling a PUSCH for a new transmission associated with a HARQ process before the round-trip timer for the previous PUSCH associated with the same HARQ process has expired (e.g., the DCI includes an uplink grant with a toggled new data indicator (NDI) bit), the UE may not be able to determine whether the DCI dynamically disables retransmission of the previous PUSCH. In addition, in the event that the base station dynamically disables HARQ retransmissions for the previous PUSCH (e.g., the base station schedules a new PUSCH transmission in the same HARQ process before determining the decoding result for the previous PUSCH transmission in the HARQ process), the base station may need to inform the UE whether the PHY configuration to be used for the new PUSCH transmission is different from the previous PUSCH transmission (e.g., associated with different power control parameters (such as a loop index, a different MCS table, a different DMRS configuration, a different time domain allocation, a different frequency hopping configuration and / or a different time slot aggregation configuration, among other examples)). However, as mentioned above, existing signaling techniques lack the ability to indicate whether the base station intends to disable HARQ retransmissions for PUSCH transmissions associated with the HARQ process before determining the decoding result for the PUSCH transmission and / or to indicate a different PHY configuration for new PUSCH transmissions when disabling HARQ retransmissions for PUSCH transmissions associated with the HARQ process.

[0066] In addition, when the base station needs to schedule a PUSCH retransmission with different PHY parameters after the round-trip timer has expired for the HARQ process, the inability to indicate a different PHY configuration in the DCI before determining the decoding result for the PUSCH transmission associated with the HARQ process may cause a similar problem. For example, as shown in example 410, the base station may schedule a first PUSCH transmission (PUSCH-1) and may schedule a retransmission of the first PUSCH transmission before receiving and / or decoding the original transmission of the first PUSCH. In such a case, if the base station fails to receive and successfully decode both the original transmission and the retransmission of the first PUSCH, the base station may schedule a second retransmission of the first PUSCH after the round-trip timer has expired (e.g., after the DRX retransmission timer has started for the first PUSCH). In this case, the base station may need to indicate a different PHY configuration for the second retransmission relative to the first retransmission (e.g., higher uplink power and / or more reliable MCS, among other examples) to increase the probability that the base station receives and decodes the first PUSCH. However, the DCI format used to schedule the first retransmission may be the same as the DCI format used to schedule the second retransmission, so the base station may not be able to indicate and the UE may not be able to determine a different PHY configuration to use for the second retransmission (e.g., a PHY configuration used to achieve a lower BLER target for the second retransmission).

[0067] Some aspects described herein relate to techniques and apparatus for scheduling, configuring, or otherwise using an uplink HARQ process that supports a new HARQ transmission (e.g., a PUSCH carrying a new transport block) before a base station determines a decoding result for a previous PUSCH transmission in the same HARQ process. Figure 5 As described in more detail, a UE may transmit a first PUSCH to a base station using one or more PHY parameters associated with a first BLER target performance for a HARQ process. When the UE receives DCI from the base station scheduling a second PUSCH before the expiration of a round-trip timer associated with the first PUSCH, the UE may determine one or more PHY parameters associated with a second BLER target performance for the HARQ process based on the DCI. The UE may then transmit a second PUSCH to the base station using the PHY parameters associated with the second BLER target performance, which may be the same as or different from the one or more PHY parameters associated with the first BLER target performance. Furthermore, as described herein, the second PUSCH may be a retransmission of the first PUSCH associated with the HARQ process or a new transmission in the same HARQ process.

[0068] As pointed out above, Figure 4 is provided as an example. Other examples may differ from those described in relation to Figure 4Examples described.

[0069] Figure 5 is a diagram illustrating an example 500 associated with uplink HARQ retransmission scheduling in a network with large propagation delays according to various aspects of the present disclosure. Figure 5 As shown, example 500 includes communications between a base station (e.g., base station 110) and a UE (e.g., UE 120). In some aspects, the base station and the UE may be included in a wireless network (e.g., a non-terrestrial network) with large propagation delays (e.g., wireless network 100). In some aspects, the base station and the UE may communicate via a wireless access link, which may include an uplink and a downlink. Additionally or alternatively, the base station and the UE may communicate using a wireless access link and a wireless feeder link (e.g., via a transparent satellite), each of which may include an uplink and a downlink.

[0070] As in Figure 5 5 and 510, the base station may send, and the UE may receive, RRC signaling indicating uplink HARQ retransmission configuration information. For example, the uplink HARQ retransmission configuration information may enable the base station to send a DCI including an uplink grant associated with the HARQ process before determining a decoding result for a previous PUSCH associated with the same HARQ process (e.g., scheduling a new PUSCH in the same HARQ process and thereby disabling HARQ retransmissions for the previous PUSCH, and / or indicating a PHY configuration for retransmission of the new PUSCH and / or the previous PUSCH).

[0071] For example, in some aspects, RRC signaling may indicate one or more HARQ processes that are configured to support scheduling a new PUSCH transmission before a round trip timer has expired for a previous PUSCH (e.g., a base station may send a DCI that includes an uplink grant for scheduling a new PUSCH in one or more HARQ processes before determining a decoding result of a previous PUSCH transmission associated with the same HARQ process). For example, a wireless network may support a maximum number (e.g., up to eight (8)) of HARQ processes, each HARQ process being associated with a separate buffer, and RRC signaling may indicate one or more of the HARQ processes that support an uplink grant for scheduling a new PUSCH before expiration of a round trip timer for a previous PUSCH associated with the one or more HARQ processes (e.g., where a HARQ process for retransmission may be dynamically disabled by scheduling a new PUSCH before a round trip timer has expired for a previous PUSCH associated with the HARQ process). In addition, when the UE receives an uplink grant associated with a HARQ process that supports a new transmission uplink grant before the expiration of the round trip timer for the previous PUSCH associated with the HARQ process, the DCI carrying the uplink grant may indicate a new BLER target performance for the new transmission uplink grant. For example, in some aspects, the DCI may indicate a different PHY configuration to meet the new BLER target performance, such as different power control parameters, a different MCS table, a different DMRS configuration, a different time domain allocation, a different frequency hopping configuration, and / or a different timeslot aggregation configuration.

[0072] Additionally or alternatively, RRC signaling may configure the UE to monitor a DCI format that indicates that one or more fields in the DCI indicate a change to one or more PHY parameters (e.g., a different MCS table or uplink power control) for a new target BLER performance. For example, base stations deployed in a wireless network and / or UEs served by base stations deployed in a wireless network may not universally support DCI formats that indicate different PHY configurations. Thus, in some aspects, RRC signaling may indicate whether the UE is to monitor a DCI format for a particular HARQ process (e.g., based on whether the base station and / or UE supports the DCI format), which may indicate to the UE whether an uplink grant for a new PUSCH transmission in the same HARQ process as the previous PUSCH transmission is expected before a round trip timer for the previous PUSCH transmission has expired. Additionally or alternatively, one or more bits in an existing DCI format may be repurposed to indicate that one or more fields in the DCI indicate a change to one or more PHY parameters. For example, in some aspects, one or more bits may be repurposed in a DCI format for PUSCH scheduling (e.g., DCI format 0_0 or 0_1) and / or a DCI format for indicating a transmit power control command for uplink transmission (e.g., DCI format 2_2 or 2_3), among other examples. In this case, RRC signaling may indicate whether one or more bits in an existing DCI format are repurposed to indicate that when the DCI carries an uplink grant for a HARQ process before a round-trip timer has expired for a previous PUSCH associated with the HARQ process, the fields in the DCI are to be interpreted differently to determine a different PHY configuration.

[0073] As in Figure 5, and further shown by reference numeral 520, a base station may transmit, and a UE may receive, a DCI comprising an uplink grant for scheduling a first PUSCH transmission for a HARQ process. For example, in some aspects, the uplink grant may indicate a PHY configuration comprising one or more PHY parameters associated with a first BLER target performance for a first PUSCH, which may be an original transport block transmission. In some aspects, the uplink grant may be provided to the UE based at least in part on a scheduling request (SR) sent from the UE to the base station and / or a buffer status report (BSR) indicating that the UE has uplink data available for transmission. For example, the SR and / or BSR may indicate a logical channel group in which the UE has uplink data available for transmission, and the base station may determine, based at least in part on the logical channel group indicated by the UE, the HARQ process in which to provide the uplink grant. For example, a logical channel group can be associated with a quality of service (QoS) requirement, which the base station can use to determine whether to provide an uplink grant in a HARQ process that supports scheduling a new PUSCH transmission before expiration of a round-trip timer (e.g., so that HARQ transmission of PUSCH can be dynamically disabled) or in a different HARQ process.

[0074] As in Figure 5 , and further indicated by reference numeral 530, the UE may transmit a first PUSCH using one or more PHY parameters associated with a first BLER target performance (e.g., based on one or more fields in a HARQ process and / or scheduling DCI indicating a PHY configuration to meet the first BLER target performance). As described in further detail above, the UE may start a round trip timer after transmitting the first PUSCH and may monitor one or more DCI messages that may schedule a second PUSCH (e.g., a new PUSCH or a retransmission of the first PUSCH) in the same HARQ process while the round trip timer is running.

[0075] As in Figure 5, and further indicated by reference numeral 540, the base station may send, and the UE may receive, another DCI message including an uplink grant associated with the same HARQ process as the first PUSCH. Furthermore, as described herein, the subsequent DCI message may be received prior to expiration of a round trip timer associated with the first PUSCH and may be configured with one or more PHY parameters associated with a second BLER target performance, which may be the same as or different from the first BLER target performance of the first PUSCH. Thus, as described herein, the UE may apply various rules to determine whether an uplink grant carried in a subsequent DCI is for a new (e.g., original) PUSCH or for a retransmission of an earlier PUSCH for which the round trip timer has not expired, and to determine PHY parameters to use for a PUSCH scheduled to be transmitted by the downlink grant carried in the DCI message.

[0076] For example, as described above, the UE may typically start a round trip timer after transmitting the first PUSCH, and if the HARQ process associated with the first PUSCH is one of the HARQ processes configured by RRC signaling to support an uplink grant that configures a new BLER target performance, the UE may expect the uplink grant to configure the new BLER target performance parameter before the expiration of the round trip timer. Additionally or alternatively, if the DCI carrying the uplink grant has a specific format associated with indicating different PHY parameters (e.g., to meet a specific BLER target performance) and / or one or more bits in the DCI carrying the uplink grant indicate that one or more fields in the DCI are used to indicate different PHY parameters, the UE may expect the uplink grant to configure the new BLER target performance parameter. Furthermore, in some aspects, whether the uplink grant is interpreted as scheduling a new PUSCH (e.g., a new transport block such that HARQ retransmissions of the first PUSCH are dynamically disabled) or scheduling retransmissions of the first PUSCH may depend on the PHY configuration and / or other scheduling parameters associated with the first PUSCH transmission.

[0077] For example, when an uplink grant is received for a HARQ process associated with a first PUSCH before a round trip timer expires for the first PUSCH, the UE may determine that the uplink grant is scheduled for a new PUSCH only if the base station has already scheduled one or more retransmissions for the first PUSCH and / or configured coverage enhancement (e.g., slot aggregation, multiple repetitions, frequency hopping, etc.) for the previous PUSCH transmission. For example, if one or more retransmissions for the first PUSCH have already been scheduled and / or coverage enhancement has been configured for the previous PUSCH transmission, the base station is more likely to successfully receive and decode the previous PUSCH transmission and may therefore dynamically disable HARQ retransmissions for the previous PUSCH transmission. Therefore, if the UE determines that an uplink grant is received for the HARQ process associated with the first PUSCH before the round trip timer expires for the first PUSCH, the UE may determine that the uplink grant is for the new PUSCH transmission if the base station previously scheduled one or more retransmissions for the first PUSCH and / or enabled coverage enhancement for the previous PUSCH transmission. Otherwise, if the UE determines that one or more retransmissions have not been scheduled for the first PUSCH and coverage enhancement is not configured for the previous PUSCH transmission, the UE may expect the uplink grant to include only retransmission grants for the previous PUSCH transmission associated with the HARQ process while the round-trip timer is running (e.g., before the DRX retransmission timer is started) and / or may expect retransmission grants after the DRX retransmission timer is started (e.g., after the round-trip timer has expired).

[0078] In addition, in the case where an uplink grant schedules retransmission of the first PUSCH, the base station may configure the UE to interpret the PHY configuration indicated in the DCI according to whether the round-trip timer or the offset timer for delaying the start of the round-trip timer is running. For example, in the case where the DCI includes an uplink grant for scheduling retransmission of the first PUSCH (e.g., the NDI bit is not toggled), if the DCI is received while the round-trip timer or the offset timer is running, the UE may interpret the PHY configuration indicated in the DCI as indicating a new set of PHY parameters that meet a different BLER target performance. Otherwise, if the DCI includes an uplink grant for scheduling retransmission of the first PUSCH (e.g., the NDI bit is not toggled) and the round-trip timer or the offset timer is not running, the UE may interpret the PHY configuration indicated in the DCI as indicating an existing set of values ​​for the PHY parameters.

[0079] Therefore, as in Figure 5In the embodiment of the present invention, and as further shown by reference numeral 550, the UE may transmit a second PUSCH using the PHY configuration indicated in the subsequent DCI. For example, as described above, the DCI may include an uplink grant for scheduling the second PUSCH in the same HARQ process as the first PUSCH, and the UE may determine whether the second PUSCH is to be configured as a retransmission or a new transmission of the first PUSCH based on the PHY configuration for the first PUSCH and / or the time when the DCI is received (e.g., by flushing the transport blocks of the first PUSCH from the HARQ process buffer). Additionally or alternatively, the second PUSCH may be associated with a second BLER target performance, which may be the same as or different from the first BLER target performance associated with the first PUSCH. In either case, the UE may determine one or more PHY parameters for the second PUSCH to meet the second BLER target performance (e.g., based on the HARQ processes associated with the first and second PUSCHs, one or more fields in the DCI scheduling the second PUSCH, and / or the state of a round trip timer or offset timer started after the UE transmits the first PUSCH).

[0080] In addition, in the case where the base station dynamically disables HARQ retransmissions of a first PUSCH by scheduling a second PUSCH as a new transmission before a round-trip timer has expired for the first PUSCH, the base station can enable one or more features to enable fast recovery from HARQ transmission loss (e.g., failure to receive and / or decode the first PUSCH for which HARQ retransmissions are disabled). For example, in the case where HARQ retransmissions are disabled, any retransmissions need to be processed at the radio link control (RLC) level. Therefore, in order to achieve fast recovery from uplink HARQ transmission failures, when no retransmissions are scheduled or HARQ retransmissions are otherwise disabled for a PUSCH that the base station failed to receive and / or decode. In this case, the RLC status report can enable the UE to immediately retransmit the PUSCH that the base station failed to receive and / or decode (e.g., before clearing the transport block from the buffer associated with the HARQ process). Similarly, for downlink HARQ transmission failure, the base station may notify the UE by a signal to trigger an RLC status report, and may carry a signal for triggering the RLC status report in the DCI scheduling the PUSCH, so that the UE sends the RLC status report.

[0081] As pointed out above, Figure 5 is provided as an example. Other examples may differ from those described in relation to Figure 5 Examples described.

[0082] Figure 6is a diagram illustrating an example process 600, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 600 is an example of a UE (eg, UE 120) performing operations associated with uplink HARQ retransmission scheduling in a network with large propagation delay.

[0083] like Figure 6 As shown, in some aspects, process 600 may include sending a first PUSCH to a base station using one or more PHY parameters associated with a first BLER target performance (block 610). For example, a UE (e.g., using Figure 7 The transmitting component 704) depicted in FIG. 1 can transmit a first PUSCH to the base station using one or more PHY parameters associated with the first BLER target performance, as described above.

[0084] like Figure 6 As further shown, in some aspects, process 600 may include receiving, before expiration of a round trip timer associated with a first PUSCH, a DCI from a base station that schedules a second PUSCH and configures one or more PHY parameters associated with a second BLER target performance (block 620). For example, a UE (e.g., using Figure 7 The receiving component 702 depicted in FIG may receive a DCI from a base station prior to expiration of a round trip timer associated with a first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance, as described above.

[0085] like Figure 6 As further shown, in some aspects, process 600 may include sending a second PUSCH to the base station using one or more PHY parameters associated with a second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on the HARQ process indicated in the DCI (block 630). Figure 7 The transmitting component 704 described in the DCI may transmit a second PUSCH to the base station using one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on the HARQ process indicated in the DCI, as described above.

[0086] Process 600 may include additional aspects, such as any single aspect or any combination of the aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0087] In a first aspect, process 600 includes receiving RRC signaling from a base station indicating one or more HARQ processes to support scheduling a new PUSCH transmission prior to expiration of a round-trip timer for a previous transmission; and determining, based at least in part on the one or more HARQ processes indicated in the RRC signaling including a HARQ process indicated in the DCI, that the DCI includes an uplink grant for the new transmission.

[0088] In a second aspect, alone or in combination with the first aspect, process 600 includes: receiving RRC signaling from a base station that configures a UE to monitor a DCI format indicating different PHY parameters before expiration of a round trip timer for a previous transmission; and determining, based at least in part on the DCI received from the base station having a DCI format indicating different PHY parameters, that the DCI configures one or more PHY parameters associated with a second BLER target performance.

[0089] In a third aspect, alone or in combination with one or more of the first and second aspects, process 600 includes: receiving RRC signaling from a base station that configures bits in a DCI to indicate whether one or more fields in the DCI indicate different PHY parameters before expiration of a round-trip timer for a previous transmission; and determining, based at least in part on the bits in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters, that the DCI configures one or more PHY parameters associated with a second BLER target performance.

[0090] In a fourth aspect, alone or in combination with one or more of aspects 1 to 3, process 600 includes: determining that a HARQ process indicated in a DCI received before expiration of a round-trip timer is associated with a first PUSCH; and determining that the DCI includes an uplink grant for a new transmission based at least in part on the base station previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0091] In a fifth aspect, alone or in combination with one or more of aspects 1 to 4, process 600 includes: determining that a HARQ process indicated in a DCI received before expiration of a round-trip timer is associated with a first PUSCH; and determining that the DCI includes only uplink grants for retransmissions of the first PUSCH based at least in part on the base station not previously scheduling at least one retransmission of the first PUSCH and not configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0092] In a sixth aspect, alone or in combination with one or more of aspects 1 to 5, process 600 includes determining, based at least in part on receiving DCI while a round-trip timer is running or while an offset timer that delays the start of a round-trip timer is running, that one or more PHY parameters configured in the DCI represent a new PHY parameter set for retransmission of the first PUSCH.

[0093] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, process 600 includes determining, based at least in part on receiving DCI while a DRX retransmission timer is running, that one or more PHY parameters configured in the DCI represent one or more PHY parameters associated with a first BLER target performance.

[0094] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the first BLER target performance is the same as the second BLER target performance.

[0095] Although Figure 6 Example blocks of process 600 are shown, but in some aspects process 600 may include Figure 6 6. In some embodiments, the process 600 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 600 may be executed in parallel.

[0096] Figure 7 7 is a block diagram of an example apparatus 700 for wireless communication. Apparatus 700 may be a UE, or a UE may include apparatus 700. In some aspects, apparatus 700 includes a receiving component 702 and a transmitting component 704, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 700 may communicate with another apparatus 706 (such as a UE, a base station, or another wireless communication device) using receiving component 702 and transmitting component 704. As further shown, apparatus 700 may include a determining component 708, among other examples.

[0097] In some aspects, the apparatus 700 may be configured to perform the Figure 5 Additionally or alternatively, the apparatus 700 may be configured to perform one or more of the processes described herein, such as Figure 6 Process 600. In some aspects, Figure 7 The apparatus 700 and / or one or more components shown in FIG. 7 may include the above-mentioned apparatus 700 and / or one or more components ... Figure 2 Additionally or alternatively, Figure 7 One or more components shown in the above may be combined Figure 2 In addition or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0098] The receiving component 702 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 706. The receiving component 702 may provide the received communications to one or more other components of the apparatus 700. In some aspects, the receiving component 702 may perform signal processing (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the apparatus 706. In some aspects, the receiving component 702 may include the processing described above in conjunction with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a described UE.

[0099] The transmitting component 704 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 706. In some aspects, one or more other components of the apparatus 706 may generate communications and may provide the generated communications to the transmitting component 704 for transmission to the apparatus 706. In some aspects, the transmitting component 706 may perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communications and may transmit the processed signals to the apparatus 706. In some aspects, the transmitting component 704 may include the components described above in conjunction with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 704 can be co-located with the receive component 702 in a transceiver.

[0100] The transmitting component 704 can transmit a first PUSCH to the base station using one or more PHY parameters associated with the first BLER target performance. The receiving component 702 can receive a DCI from the base station before expiration of a round trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with the second BLER target performance. The transmitting component 704 can transmit a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a HARQ process indicated in the DCI.

[0101] Receiving component 702 can receive RRC signaling from a base station indicating one or more HARQ processes to support scheduling a new PUSCH transmission before expiration of a round trip timer for a previous transmission. Determining component 708 can determine that the DCI includes an uplink grant for the new transmission based at least in part on the one or more HARQ processes indicated in the RRC signaling including a HARQ process indicated in the DCI.

[0102] Receiving component 702 can receive RRC signaling from a base station that configures the UE to monitor a DCI format indicating different PHY parameters before expiration of a round trip timer for a previous transmission. Determining component 708 can determine that the DCI configures one or more PHY parameters associated with a second BLER target performance based at least in part on the DCI received from the base station having a DCI format indicating different PHY parameters.

[0103] Receiving component 702 can receive RRC signaling from a base station that configures bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters before expiration of a round trip timer for a previous transmission. Determining component 708 can determine that the DCI configures one or more PHY parameters associated with a second BLER target performance based at least in part on the bits in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters.

[0104] The determining component 708 can determine that the HARQ process indicated in the DCI received before the expiration of the round-trip timer is associated with the first PUSCH, and the determining component 708 can determine that the DCI only includes uplink grants for new transmissions based at least in part on the base station previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0105] The determining component 708 can determine that the HARQ process indicated in the DCI received before the expiration of the round-trip timer is associated with the first PUSCH, and the determining component 708 can determine that the DCI includes only uplink grants for retransmissions of the first PUSCH based at least in part on the base station not previously scheduling at least one retransmission of the first PUSCH and not configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0106] Determining component 708 can determine, based at least in part on receiving the DCI while the round trip timer is running or while an offset timer delaying start of the round trip timer is running, that the one or more PHY parameters configured in the DCI represent a new PHY parameter set for retransmission of the first PUSCH.

[0107] Determining component 708 can determine, based at least in part on receiving the DCI while the DRX retransmission timer is running, that the one or more PHY parameters configured in the DCI represent one or more PHY parameters associated with the first BLER target performance.

[0108] Figure 7 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 7 The components shown may include additional components, fewer components, different components, or components arranged differently than those shown. Figure 7 Two or more components shown may be implemented in a single component, or Figure 7 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 7 The illustrated set of (one or more) components may perform the operations described as being performed by Figure 7 Another group of components is shown performing one or more functions.

[0109] Figure 8 800 is a block diagram of an example apparatus 800 for wireless communication. Apparatus 800 may be a base station, or a base station may include apparatus 800. In some aspects, apparatus 800 includes a receiving component 802 and a transmitting component 804, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 800 may communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device) using receiving component 802 and transmitting component 804.

[0110] In some aspects, the apparatus 800 may be configured to perform the Figure 5 In some aspects, Figure 8 The apparatus 800 and / or one or more components shown in FIG. 8 may include the above-mentioned apparatus 800 and / or one or more components ... Figure 2Additionally or alternatively, Figure 8 One or more components shown in the above may be combined Figure 2 In addition or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0111] The receiving component 802 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 806. The receiving component 802 may provide the received communications to one or more other components of the apparatus 800. In some aspects, the receiving component 802 may perform signal processing (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the apparatus 806. In some aspects, the receiving component 802 may include the processing described above in conjunction with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0112] The transmitting component 804 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 806. In some aspects, one or more other components of the apparatus 806 may generate communications and may provide the generated communications to the transmitting component 804 for transmission to the apparatus 806. In some aspects, the transmitting component 806 may perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communications and may transmit the processed signals to the apparatus 806. In some aspects, the transmitting component 804 may include the above-described components in conjunction with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described base stations. In some aspects, the transmit component 804 can be co-located with the receive component 802 in a transceiver.

[0113] Figure 8 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 8 The components shown may include additional components, fewer components, different components, or components arranged differently than those shown. Figure 8 Two or more components shown may be implemented in a single component, or Figure 8The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The illustrated set of (one or more) components may perform the operations described as being performed by Figure 8 Another group of components is shown performing one or more functions.

[0114] The following provides a summary of some aspects of the disclosure:

[0115] Aspect 1: A method of wireless communication performed by a UE, comprising: sending a first PUSCH to a base station using one or more PHY parameters associated with a first BLER target performance; receiving a DCI from the base station before expiration of a round-trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; and sending a second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a HARQ process indicated in the DCI.

[0116] Aspect 2: The method according to Aspect 1 further includes: receiving RRC signaling from the base station, the RRC signaling indicating one or more HARQ processes to support scheduling a new PUSCH transmission before the expiration of the round-trip timer for the previous transmission; and determining that the DCI includes an uplink grant for the new transmission based at least in part on the one or more HARQ processes indicated in the RRC signaling including the HARQ process indicated in the DCI.

[0117] Aspect 3: The method according to aspect 1 further includes: receiving RRC signaling from the base station, the RRC signaling configuring the UE to monitor a DCI format for indicating different PHY parameters before expiration of the round-trip timer for the previous transmission; and determining the one or more PHY parameters associated with the second BLER target performance by the DCI configuration based at least in part on the DCI received from the base station having the DCI format for indicating different PHY parameters.

[0118] Aspect 4: The method according to aspect 1 also includes: receiving RRC signaling from the base station, the RRC signaling configuring bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters before expiration of the round-trip timer for the previous transmission; and determining the one or more PHY parameters associated with the second BLER target performance in the DCI configuration based at least in part on the bits in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters.

[0119] Aspect 5: The method according to any one of Aspects 1-4 further includes: determining that the HARQ process indicated in the DCI received before the expiration of the round-trip timer is associated with the first PUSCH; and determining that the DCI includes an uplink grant for the new transmission based at least in part on the base station previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for the original transmission of the first PUSCH.

[0120] Aspect 6: The method according to any one of Aspects 1-4 further includes: determining that the HARQ process indicated in the DCI received before the expiration of the round-trip timer is associated with the first PUSCH; and determining that the DCI only includes an uplink grant for the retransmission of the first PUSCH based at least in part on the fact that the base station did not previously schedule at least one retransmission of the first PUSCH and did not configure at least one coverage enhancement for the original transmission of the first PUSCH.

[0121] Aspect 7: The method according to Aspect 6 also includes: determining that the one or more PHY parameters configured in the DCI represent a new PHY parameter set for the retransmission of the first PUSCH based at least in part on receiving the DCI while the round-trip timer is running or while an offset timer that delays the start of the round-trip timer is running.

[0122] Aspect 8: The method according to aspect 6 also includes: determining, at least in part based on receiving the DCI when the DRX retransmission timer is running, that the one or more PHY parameters configured in the DCI represent the one or more PHY parameters associated with the first BLER target performance.

[0123] Aspect 9: The method according to any one of aspects 1 to 8, wherein the first BLER target performance is the same as the second BLER target performance.

[0124] Aspect 10: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 1-9.

[0125] Aspect 11: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method according to any one of aspects 1-9.

[0126] Aspect 12: An apparatus for wireless communication, comprising at least one means for performing the method according to any one of aspects 1-9.

[0127] Aspect 13: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1-9.

[0128] Aspect 14: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of any one of aspects 1-9.

[0129] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

[0130] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. No matter whether it is referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions and other examples. As used herein, a processor is implemented with a combination of hardware and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented with a combination of hardware and / or hardware and software in different forms. The actual specialized control hardware or software code for implementing these systems and / or methods is not intended to limit various aspects. Therefore, the operation and behavior of the system and / or method are described herein without citing specific software code. It is to be understood that software and hardware can be designed to implement the system and / or method at least in part based on the description herein.

[0131] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0132] Even if the specific combination of feature is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many features in these features can be combined in a manner not specifically recorded in the claims and / or specifically disclosed in the specification. Although each dependent claim listed below can only directly depend on a claim, the disclosure of various aspects includes the combination of each dependent claim and each other claim in the claim set. As used herein, the phrase of "at least one of" referring to a list of items refers to any combination of those items, including single members. For example, "at least one of a, b or c" is intended to cover a, b, c, ab, ac, bc and abc, and with any combination of the multiple of the same element (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other sorting of a, b and c).

[0133] None of the elements, actions or instructions used herein should be interpreted as key or necessary, unless clearly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more projects, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more projects quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (for example, related projects, unrelated projects, or the combination of related projects and unrelated projects), and can be used interchangeably with "one or more". In the case of only expecting a project, phrase "only one" or similar language is used. In addition, as used herein, the terms "have (has)", "have (have)", "have (having)" etc. are intended to be open terms. In addition, unless otherwise clearly stated, phrase "based on" is intended to mean "at least partially based on". Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and can be used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: transmitting a first physical uplink shared channel (PUSCH) to the base station using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance; receiving, from the base station before expiration of a round trip timer associated with the first PUSCH, downlink control information (DCI), the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; as well as The second PUSCH is transmitted to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a hybrid automatic repeat request (HARQ) process indicated in the DCI.

2. The UE according to claim 1, wherein: The one or more processors are further configured to: receiving radio resource control (RRC) signaling from the base station, the RRC signaling indicating one or more HARQ processes to support scheduling a new PUSCH transmission before expiration of the round trip timer for a previous transmission; and Determining that the DCI includes an uplink grant for the new transmission is based at least in part on the one or more HARQ processes indicated in the RRC signaling including the HARQ process indicated in the DCI.

3. The UE according to claim 1, wherein: The one or more processors are further configured to: receiving radio resource control signaling from the base station, the radio resource control signaling configuring the UE to monitor a DCI format indicating a different PHY parameter before expiration of the round trip timer for a previous transmission; as well as The DCI is determined to configure the one or more PHY parameters associated with the second BLER target performance based at least in part on the DCI received from the base station having the DCI format for indicating different PHY parameters.

4. The UE according to claim 1, wherein: The one or more processors are further configured to: receiving radio resource control signaling from the base station, the radio resource control signaling configuring bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters prior to expiration of the round trip timer for a previous transmission; as well as The DCI is determined to configure the one or more PHY parameters associated with the second BLER target performance based at least in part on the bit in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters. The UE according to claim 1 , wherein: The one or more processors are further configured to: determining that the HARQ process indicated in the DCI received before the expiration of the round trip timer is associated with the first PUSCH; and Determining that the DCI includes an uplink grant for the new transmission is based at least in part on the base station previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for an original transmission of the first PUSCH. The UE according to claim 1 , wherein: The one or more processors are further configured to: determining that the HARQ process indicated in the DCI received before the expiration of the round trip timer is associated with the first PUSCH; and Determining that the DCI includes only an uplink grant for the retransmission of the first PUSCH is based at least in part on the base station not previously scheduling at least one retransmission of the first PUSCH and not configuring at least one coverage enhancement for the original transmission of the first PUSCH.

7. The UE according to claim 6, wherein: The one or more processors are further configured to: Determining that the one or more PHY parameters configured in the DCI represent a new PHY parameter set for the retransmission of the first PUSCH based at least in part on receiving the DCI while the round trip timer is running or while an offset timer that delays starting of the round trip timer is running.

8. The UE according to claim 6, wherein: The one or more processors are further configured to: The one or more PHY parameters configured in the DCI are determined to represent the one or more PHY parameters associated with the first BLER target performance based at least in part on receiving the DCI while discontinuous reception retransmission is running.

9. The UE according to claim 1, wherein: The first BLER target performance is the same as the second BLER target performance.

10. A method of wireless communication performed by a user equipment (UE), comprising: transmitting a first physical uplink shared channel (PUSCH) to the base station using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance; receiving, from the base station before expiration of a round trip timer associated with the first PUSCH, downlink control information (DCI), the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; as well as The second PUSCH is transmitted to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a hybrid automatic repeat request (HARQ) process indicated in the DCI.

11. The method according to claim 10, further comprising: receiving radio resource control (RRC) signaling from the base station, the RRC signaling indicating one or more HARQ processes to support scheduling a new PUSCH transmission before expiration of the round trip timer for a previous transmission; and Determining that the DCI includes an uplink grant for the new transmission is based at least in part on the one or more HARQ processes indicated in the RRC signaling including the HARQ process indicated in the DCI.

12. The method according to claim 10, further comprising: receiving radio resource control signaling from the base station, the radio resource control signaling configuring the UE to monitor a DCI format indicating a different PHY parameter before expiration of the round trip timer for a previous transmission; as well as The DCI is determined to configure the one or more PHY parameters associated with the second BLER target performance based at least in part on the DCI received from the base station having the DCI format for indicating different PHY parameters.

13. The method according to claim 10, further comprising: receiving radio resource control signaling from the base station, the radio resource control signaling configuring bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters prior to expiration of the round trip timer for a previous transmission; as well as The DCI is determined to configure the one or more PHY parameters associated with the second BLER target performance based at least in part on the bit in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters.

14. The method according to claim 10, further comprising: determining that the HARQ process indicated in the DCI received before the expiration of the round trip timer is associated with the first PUSCH; as well as Determining that the DCI includes an uplink grant for the new transmission is based at least in part on the base station previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for an original transmission of the first PUSCH.

15. The method according to claim 10, further comprising: determining that the HARQ process indicated in the DCI received before the expiration of the round trip timer is associated with the first PUSCH; as well as Determining that the DCI includes only an uplink grant for the retransmission of the first PUSCH is based at least in part on the base station not previously scheduling at least one retransmission of the first PUSCH and not configuring at least one coverage enhancement for the original transmission of the first PUSCH.

16. The method according to claim 15, further comprising: Determining that the one or more PHY parameters configured in the DCI represent a new PHY parameter set for the retransmission of the first PUSCH based at least in part on receiving the DCI while the round trip timer is running or while an offset timer that delays starting of the round trip timer is running.

17. The method according to claim 15, further comprising: The one or more PHY parameters configured in the DCI are determined to represent the one or more PHY parameters associated with the first BLER target performance based at least in part on receiving the DCI while discontinuous reception retransmission is running.

18. The method according to claim 10, wherein The first BLER target performance is the same as the second BLER target performance.

19. An apparatus for wireless communication, comprising: means for transmitting a first physical uplink shared channel (PUSCH) to a base station using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance; means for receiving downlink control information (DCI) from the base station before expiration of a round trip timer associated with the first PUSCH, the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; as well as means for transmitting the second PUSCH to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH comprises a retransmission or a new transmission of the first PUSCH based at least in part on a hybrid automatic repeat request (HARQ) process indicated in the DCI.

20. The apparatus according to claim 19, further comprising: means for receiving radio resource control (RRC) signaling from the base station, the RRC signaling indicating one or more HARQ processes to support scheduling a new PUSCH transmission before expiration of the round trip timer for a previous transmission; and means for determining that the DCI includes an uplink grant for the new transmission based at least in part on the one or more HARQ processes indicated in the RRC signaling including the HARQ process indicated in the DCI.

21. The apparatus according to claim 19, further comprising: means for receiving radio resource control signaling from the base station, the radio resource control signaling configuring the apparatus to monitor a DCI format for indicating a different PHY parameter prior to expiration of the round trip timer for a previous transmission; as well as Means for determining that the DCI configures the one or more PHY parameters associated with the second BLER target performance based at least in part on the DCI received from the base station having the DCI format for indicating different PHY parameters.

22. The apparatus of claim 19, further comprising: means for receiving radio resource control signaling from the base station, the radio resource control signaling configuring bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters prior to expiration of the round trip timer for a previous transmission; as well as Means for determining that the DCI configures the one or more PHY parameters associated with the second BLER target performance based at least in part on the bit in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters.

23. The apparatus of claim 19, further comprising: means for determining that the HARQ process indicated in the DCI received before the expiration of the round trip timer is associated with the first PUSCH; as well as Means for determining that the DCI includes an uplink grant for the new transmission based at least in part on the base station previously scheduling at least one retransmission of the first PUSCH or configuring at least one coverage enhancement for an original transmission of the first PUSCH.

24. The apparatus of claim 19, further comprising: means for determining that the HARQ process indicated in the DCI received before the expiration of the round trip timer is associated with the first PUSCH; as well as Means for determining that the DCI includes only an uplink grant for the retransmission of the first PUSCH based at least in part on the base station not previously scheduling at least one retransmission of the first PUSCH and not configuring at least one coverage enhancement for the original transmission of the first PUSCH.

25. The apparatus according to claim 24, further comprising: Means for determining that the one or more PHY parameters configured in the DCI represent a new PHY parameter set for the retransmission of the first PUSCH based at least in part on receiving the DCI while the round trip timer is running or while an offset timer that delays starting of the round trip timer is running.

26. The apparatus of claim 24, further comprising: Means for determining, based at least in part on receiving the DCI while discontinuous reception retransmission is running, that the one or more PHY parameters configured in the DCI represent the one or more PHY parameters associated with the first BLER target performance.

27. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: transmitting a first physical uplink shared channel (PUSCH) to the base station using one or more physical layer (PHY) parameters associated with a first block error rate (BLER) target performance; receiving, from the base station before expiration of a round trip timer associated with the first PUSCH, downlink control information (DCI), the DCI scheduling a second PUSCH and configuring one or more PHY parameters associated with a second BLER target performance; as well as The second PUSCH is transmitted to the base station using the one or more PHY parameters associated with the second BLER target performance, wherein the second PUSCH includes a retransmission or a new transmission of the first PUSCH based at least in part on a hybrid automatic repeat request (HARQ) process indicated in the DCI.

28. The non-transitory computer readable medium of claim 27, wherein: The one or more instructions further cause the UE to: receiving radio resource control (RRC) signaling from the base station, the RRC signaling indicating one or more HARQ processes to support scheduling a new PUSCH transmission before expiration of the round trip timer for a previous transmission; and Determining that the DCI includes an uplink grant for the new transmission is based at least in part on the one or more HARQ processes indicated in the RRC signaling including the HARQ process indicated in the DCI.

29. The non-transitory computer-readable medium of claim 27, wherein: The one or more instructions further cause the UE to: receiving radio resource control signaling from the base station, the radio resource control signaling configuring the UE to monitor a DCI format indicating a different PHY parameter before expiration of the round trip timer for a previous transmission; as well as The DCI is determined to configure the one or more PHY parameters associated with the second BLER target performance based at least in part on the DCI received from the base station having the DCI format for indicating different PHY parameters.

30. The non-transitory computer readable medium of claim 27, wherein: The one or more instructions further cause the UE to: receiving radio resource control signaling from the base station, the radio resource control signaling configuring bits in the DCI to indicate whether one or more fields in the DCI indicate different PHY parameters prior to expiration of the round trip timer for a previous transmission; as well as The DCI is determined to configure the one or more PHY parameters associated with the second BLER target performance based at least in part on the bit in the DCI indicating that the one or more fields in the DCI indicate different PHY parameters.

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