Timer for enhanced coverage with non-terrestrial networks

Abstract

In summary, various aspects of this disclosure relate to wireless communication. In some aspects, a user equipment (UE) may start a timer after a repetition of communication, wherein the calculation of the timer's length includes an offset corresponding to the propagation delay between the UE and the base station via a non-terrestrial network (NTN) entity. The UE may start a discontinuous reception (DRX) retransmission timer after the timer expires. 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 / 248,213, filed January 14, 2021, entitled “TIMERS FOR ENHANCEDCOVERAGE WITH NON-TERRESTRIAL NETWORK,” which is expressly incorporated herein by reference. Technical Field

[0003] In summary, various aspects of this disclosure relate to wireless communication, and various aspects of this disclosure relate to techniques and apparatus for timers used for enhanced coverage with non-terrestrial networks. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable 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 / Improved LTE is an enhanced set of the Universal Mobile Telecommunications System (UMTS) mobile standard released by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). UEs can communicate with the 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 Headend, Transmit / Receive Point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0006] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global levels. NR (which can also be referred to as 5G) is an enhancement set of the LTE mobile standard released by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Spread Spectrum OFDM (DFT-s-OFDM)) on the uplink (UL), thereby better supporting mobile broadband internet access, as well as beamforming, multiple-input multiple-output (MIMO) antenna technologies, 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 method for wireless communication performed by a user equipment (UE) includes: starting a timer after communication, wherein the length of the timer is calculated including an offset corresponding to a propagation delay between the UE and a base station via a non-terrestrial network (NTN) entity. The method includes: starting a discontinuous reception (DRX) retransmission timer after the timer expires.

[0008] In some aspects, a method of wireless communication performed by a UE includes: transmitting a repetition of uplink communication to a base station. The method includes: monitoring the Physical Downlink Control Channel (PDCCH) to receive Hybrid Automatic Repeat Request (HARQ) feedback or uplink clearance for new transmission during a time period following the transmission of a first repetition of the repetition, wherein the time period corresponds to the propagation delay to the base station via a non-terrestrial network (NTN) entity. The method includes: starting a DRX retransmission timer after transmitting the last repetition of the repetition.

[0009] In some aspects, a method of wireless communication performed by a base station includes: receiving a repetition of uplink communication from a UE; and sending an uplink grant for a new transmission or a HARQ feedback for the uplink communication to the UE during a first time period prior to receiving the last repetition of the repetition from the UE, wherein the first time period is based at least in part on a propagation delay between the UE and the base station via an NTN entity.

[0010] In some aspects, a 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 being configured to: start a timer after a repetition of communication, wherein the length of the timer is calculated including an offset corresponding to a propagation delay between the UE and a base station via an NTN entity. The one or more processors are configured to: start a DRX retransmission timer after the timer expires.

[0011] In some aspects, a 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 being configured to: transmit a repetition of uplink communication to a base station; and monitor the PDCCH to receive HARQ feedback or uplink permission for a new transmission during a time period following the transmission of a first repetition of the repetition, wherein the time period corresponds to a propagation delay to the base station via an NTN entity. The one or more processors are configured to: start a DRX retransmission timer after transmitting the last repetition of the repetition.

[0012] In some aspects, a base station for wireless communication includes: a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receive a repeat of uplink communication from a UE; and send an uplink grant for a new transmission or a HARQ feedback for the uplink communication to the UE during a first time period prior to receiving the last repeat of the repeat from the UE, wherein the first time period is at least partially based on a propagation delay between the UE and the base station via an NTN entity.

[0013] 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: start a timer after a repetition of communication, wherein the length of the timer is calculated including an offset corresponding to a propagation delay between the UE and a base station via an NTN entity; and start a DRX retransmission timer after the timer expires.

[0014] 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 repeat of uplink communication to a base station; monitor the PDCCH to receive HARQ feedback or uplink permission for a new transmission during a time period following the transmission of the first repeat of the repeat, wherein the time period corresponds to the propagation delay to the base station via an NTN entity; and start a DRX retransmission timer after the transmission of the last repeat of the repeat.

[0015] 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 base station, cause the base station to: receive a repetition of uplink communication from a UE; and send an uplink grant for a new transmission or a HARQ feedback for the uplink communication to the UE during a first time period prior to receiving the last repetition of the repetition from the UE, wherein the first time period is based at least in part on a propagation delay between the UE and the base station via an NTN entity.

[0016] In some aspects, an apparatus for wireless communication includes: a unit for starting a timer after a repetition of communication, wherein the length of the timer is calculated including an offset corresponding to a propagation delay between the UE and the base station via an NTN entity; and a unit for starting a DRX retransmission timer after the timer expires.

[0017] In some aspects, an apparatus for wireless communication includes: a unit for transmitting a repetition of uplink communication to a base station; a unit for monitoring the PDCCH to receive HARQ feedback or uplink permission for a new transmission during a time period following the transmission of a first repetition of the repetition, wherein the time period corresponds to a propagation delay to the base station via an NTN entity; and a unit for starting a DRX retransmission timer after the transmission of the last repetition of the repetition.

[0018] In some aspects, an apparatus for wireless communication includes: a unit for receiving a repetition of uplink communication from a UE; and a unit for sending an uplink grant for a new transmission or a HARQ feedback for the uplink communication to the UE during a first time period prior to receiving the last repetition of the repetition from the UE, wherein the first time period is based at least in part on a propagation delay between the UE and the base station via an NTN entity.

[0019] In general, the aspects include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems as fully described herein with reference to the accompanying drawings and description and as shown by the accompanying drawings and description.

[0020] The foregoing has provided a fairly broad overview of the features and technical advantages of examples according to this disclosure in order to better understand the following detailed description. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (both their organization and manner of operation) and their associated advantages will be better understood when considered in conjunction with the accompanying drawings, based on the following description. Each drawing in the accompanying drawings is provided for illustrative and descriptive purposes and is not intended to define a limitation of the claims. Attached Figure Description

[0021] To gain a full understanding of the foregoing features of this disclosure, a more specific description of the invention, briefly summarized above, can be obtained by referring to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and are therefore not intended to limit the scope of the disclosure, as other equally valid aspects are permissible under this description. The same reference numerals in different drawings may identify the same or similar elements.

[0022] Figure 1 This is a diagram illustrating examples of wireless networks according to various aspects of this disclosure.

[0023] Figure 2 This is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to various aspects of this disclosure.

[0024] Figure 3 The diagram illustrates examples of regenerative satellite deployment and transparent satellite deployment in a non-terrestrial network (NTN) according to various aspects of this disclosure.

[0025] Figure 4 This is a diagram illustrating an example of using timers to enhance coverage in NTN according to various aspects of this disclosure.

[0026] Figure 5 This is a diagram illustrating an example of using Group Hybrid Automatic Repeat Request (HARQ) feedback according to various aspects of this disclosure.

[0027] Figure 6This is a diagram illustrating an example of using timers to enhance coverage in NTN according to various aspects of this disclosure.

[0028] Figure 7 This is a diagram illustrating an example of an early transmission for a Discontinuous Receive (DRX) retransmission timer according to various aspects of this disclosure.

[0029] Figure 8 This is a diagram illustrating an example of an early transmission for the DRX retransmission timer according to various aspects of this disclosure.

[0030] Figure 9 This is a diagram illustrating an example of using an early transmission for a DRX retransmission timer according to various aspects of this disclosure.

[0031] Figure 10 This is a diagram illustrating an example of HARQ feedback signaling according to various aspects of this disclosure.

[0032] Figure 11 This is a diagram illustrating, for example, an example process performed by a UE according to various aspects of this disclosure.

[0033] Figure 12 This is a diagram illustrating, for example, an example process performed by a UE according to various aspects of this disclosure.

[0034] Figure 13 This is a diagram illustrating, for example, an example process performed by a base station according to various aspects of this disclosure.

[0035] Figure 14-16 This is a block diagram of an example device for wireless communication according to various aspects of this disclosure. Detailed Implementation

[0036] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, an apparatus or a method may be implemented using any number of the aspects set forth herein. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods implemented using structures, functions, or structures and functions other than or different from the aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0037] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in detail below and illustrated in the accompanying drawings, through various frames, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using hardware, software, or a combination thereof. Whether such an element is implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system.

[0038] It should be noted that while this document may use terms commonly associated with 5G or NR radio access technology (RAT) to describe aspects, aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or RATs after 5G (e.g., 6G).

[0039] Figure 1This is a diagram illustrating an example of a wireless network 100 according to various aspects of this disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network, an LTE network, etc. The wireless network 100 may include multiple base stations (BS) 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A 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 can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0040] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UEs with service subscriptions. A picocell can cover a relatively small geographic area and can allow unrestricted access by UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a residential area) and can allow restricted access by UEs associated with that femtocell (e.g., UEs in a Closed User Group (CSG)). A BS used for macrocells can be referred to as a macro BS. A BS used for picocells can be referred to as a pico BS. A BS used for femtocells can be referred to as a femtocell BS or a home BS. Figure 1 In the examples shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” are used interchangeably herein.

[0041] In some respects, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, any suitable transport network can be used to interconnect BSs with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.).

[0042] In some respects, as shown in the figure, the cell can be provided by a non-terrestrial network base station 110. As used herein, "non-terrestrial network" (NTN) can refer to a network in which access is provided by non-terrestrial base stations (such as base stations carried by satellites, balloons, airships, aircraft, unmanned aerial vehicles, high-altitude platform stations, etc.).

[0043] 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 transmit the data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, repeater, etc. In some aspects, a non-terrestrial platform (similar to the base station described above) can be used to implement a relay station.

[0044] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0045] Network controller 130 can be coupled to a group of base stations (BSs) and can provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via backhaul. BSs can also communicate with each other directly or indirectly via wireless or wired backhaul.

[0046] UE 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, user unit, station, etc. UE may be a cellular phone (e.g., a smartphone), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet device, camera, gaming device, netbook, smartbook, ultrabook, medical device or apparatus, biometric sensor / device, wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music or video device, or satellite radio unit, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0047] Some UEs can 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, instruments, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes can provide connectivity to or to a network (e.g., a wide area network such as the Internet or cellular networks) via wired or wireless communication links, for example. Some UEs can be considered Internet of Things (IoT) devices, and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included within a housing housing the components of UE 120, such as processor components, memory components, etc. In some aspects, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0048] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0049] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communication with each other). For example, UE 120 may 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, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described herein as being performed by base station 110.

[0050] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1) (spanning from 410 MHz to 7.125 GHz), and / or can communicate using an operating band with a second frequency range (FR2) (spanning from 24.25 GHz to 52.6 GHz). The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequencies (IFs). Although a portion of FR1 is greater than 6 GHz, FR1 is generally referred to as the "below 6 GHz" band. Similarly, FR2 is generally referred to as the "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU). Therefore, unless otherwise explicitly stated, it should be understood that the terms "below 6 GHz" and the like (if used herein) can broadly refer to frequencies below 6 GHz, frequencies within FR1, and / or intermediate frequencies (e.g., above 7.125 GHz). Similarly, unless otherwise explicitly stated, it should be understood that the terms "millimeter wave" and the like (if used herein) can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequencies (e.g., below 24.25 GHz). It is anticipated that the frequencies included in FR1 and FR2 may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0051] As pointed out above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0052] Figure 2This is a diagram illustrating an example of communication between a base station 110 and a UE 120 in a wireless network 100 according to various aspects of this disclosure. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, wherein generally, T ≥ 1 and R ≥ 1.

[0053] At base station 110, transmitting processor 220 can receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from each UE, process (e.g., code and modulate) the data for each UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. Transmitting processor 220 can also process system information (e.g., semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, permission, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmitting processor 220 can 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 signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding, if applicable) on data symbols, control symbols, overhead symbols, and / or reference symbols, and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can (e.g., for OFDM) process its corresponding output symbol stream to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t respectively.

[0054] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine the Reference Signal Received Power (RSRP) parameter, Received Signal Strength Indicator (RSSI) parameter, Reference Signal Received Quality (RSRQ) parameter, and / or CQI parameter, as well as other examples. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0055] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0056] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within the following: one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, and other examples. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or multiple antenna elements within housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmitting and / or receiving components (such as...) Figure 2 One or more antenna elements (one or more components).

[0057] On the uplink, at UE 120, the transmitting processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting RSRP, RSSI, RSRQ, and / or CQI). The transmitting processor 264 can also generate reference symbols for one or more reference signals. Symbols from the transmitting processor 264 can be pre-coded (if applicable) by TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of UE 120 can be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264 and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as referenced). Figure 1-16 (Described).

[0058] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 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 communication. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as referenced). Figure 1-16 (Described).

[0059] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other components may execute one or more techniques associated with timers for enhanced coverage with non-terrestrial networks, as described in more detail elsewhere herein. For example, the controller / processor of the NTN entity (e.g., controller / processor 240 of base station 110), the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can perform or direct, for example Figure 11 Process 1100 Figure 12 Process 1200 Figure 13 The operation of process 1300 and / or other processes as described herein. The memory may store data and program code for the NTN entity, and memories 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, the memory for the NTN entity, memory 242, and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code, program code, etc.) for wireless communication. For example, one or more instructions, when executed by one or more processors of the NTN entity, base station 110, and / or UE 120 (e.g., directly, or after compilation, translation, interpretation, etc.), may cause one or more processors, the NTN entity, UE 120, and / or base station 110 to perform or instruct, for example... Figure 11 Process 1100 Figure 12 Process 1200 Figure 13 The operation of process 1300 and / or other processes as described herein. In some aspects, execution instructions may include run instructions, translation instructions, compilation instructions and / or interpretation instructions, and other examples.

[0060] Although Figure 2 The boxes in the diagram are shown as different components, but the functions described above with respect to these boxes can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by or under the control of controller / processor 280.

[0061] In some aspects, UE 120 includes: a unit for starting a timer after a repetition of communication, wherein the calculation of the timer length includes an offset corresponding to a propagation delay between the UE and the base station via an NTN entity; and / or a unit for starting a discontinuous reception (DRX) retransmission timer (e.g., a DRX retransmission timer) after the timer expires. The unit 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.

[0062] In some aspects, UE 120 includes: a unit for transmitting a repetition of uplink communication to a base station; a unit for monitoring the Physical Downlink Control Channel (PDCCH) to receive Hybrid Automatic Repeat Request (HARQ) feedback or uplink clearance for new transmission during a time period following the first repetition in the transmission repetition, wherein the time period corresponds to the propagation delay to the base station via the NTN entity; and / or a unit for starting a DRX retransmission timer after the last repetition in the transmission repetition. The units 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.

[0063] In some aspects, UE 120 includes: a unit for stopping the DRX retransmission timer when it is running, or not starting the DRX retransmission timer when it is not running, based at least in part on receiving from control channel bits an indication that the HARQ feedback corresponds to a specific HARQ process associated with the DRX retransmission timer.

[0064] In some aspects, UE 120 includes: a unit for determining the HARQ process corresponding to the HARQ feedback based at least in part on the propagation delay, or a unit for stopping the DRX retransmission timer associated with the HARQ process.

[0065] In some aspects, base station 110 includes: a unit for receiving repetitions of uplink communication from a UE; or a unit for sending an uplink grant for new transmission or a HARQ feedback for uplink communication to the UE during a first time period before receiving the last repetition in the repetitions from the UE, wherein the first time period is at least partially based on the propagation delay between the UE and the base station via an NTN entity. The unit for base station 110 to perform the operations described herein may include, for example, one or more of a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0066] In some aspects, base station 110 includes a unit for transmitting an indication of HARQ feedback corresponding to all HARQ processes associated with the discontinuous reception timer.

[0067] In some aspects, base station 110 includes a unit for transmitting an indication of HARQ feedback for a first HARQ process associated with a DRX retransmission timer.

[0068] As pointed out above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0069] Figure 3 This is a diagram illustrating example 300 of regenerative satellite deployment and example 310 of transparent satellite deployment in NTN.

[0070] 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), gNB, etc. In some aspects, satellite 320 may be referred to as a non-terrestrial base station, a regenerative repeater, an airborne processing repeater, an NTN entity, etc. In some aspects, satellite 320 may demodulate uplink radio frequency signals and may modulate baseband signals derived from uplink radio frequency signals to generate downlink radio frequency transmissions. Satellite 320 may transmit downlink radio frequency signals over serving link 330. Satellite 320 may provide cell coverage for UE 120.

[0071] Example 310 illustrates a transparent satellite deployment, which may also be referred to as a bend-tube satellite deployment. In Example 310, UE 120 is served by satellite 340 via serving link 330. Satellite 340 may also be considered an NTN entity. Satellite 340 may be a transparent satellite. Satellite 340 may relay signals received from gateway 350 via feeder link 360. For example, the satellite may receive uplink RF transmissions and may transmit downlink RF transmissions without demodulating the uplink RF transmissions. In some aspects, the satellite may convert the uplink RF transmission frequency received on serving link 330 to the uplink RF transmission frequency of feeder link 360 and may amplify and / or filter the uplink RF transmissions. In some aspects, UE 120 shown in Examples 300 and 310 may be associated with Global Navigation Satellite System (GNSS) capability, Global Positioning System (GPS) capability, etc., but not all UEs have such capabilities. Satellite 340 may provide cell coverage for UE 120.

[0072] Service link 330 may include a link between satellite 340 and UE 120, and may include one or more uplinks or downlinks. Feeder link 360 may include a link between satellite 340 and gateway 350, and may include one or more uplinks (e.g., from UE 120 to gateway 350) or downlinks (e.g., from gateway 350 to UE 120).

[0073] 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 Doppler effects. These Doppler effects may be significantly greater than those in the terrestrial network. The Doppler effects on feeder link 360 can be compensated for to some extent, but may still be associated with a certain amount of uncompensated frequency error. Furthermore, gateway 350 may be associated with residual frequency errors, and / or satellites 320 / 340 may be associated with airborne frequency errors. These sources of frequency errors may cause the received downlink frequency at UE 120 to deviate from the target downlink frequency.

[0074] UEs served by NTN can use DRX to save power. DRX includes UE sleep (“off”) and wake-up (“on”) cycles, and the UE saves power while sleeping. The deeper the sleep, the more power the UE can save. The UE can periodically wake up to send messages on the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH), or receive messages on the Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH).

[0075] The UE can use the DRX timer during active and inactive periods. For example, when the UE receives an uplink grant or indication on the PDCCH for the transmission of new data, the UE can start a DRX inactivity timer. The DRX inactivity timer specifies how long the UE remains in the DRX "on" period after receiving a message on the PDCCH. When the DRX inactivity timer expires, if the UE is configured for a short DRX cycle, the UE can use the short DRX cycle. The UE may remain in a long DRX cycle indefinitely.

[0076] The DRX retransmission timer specifies the maximum number of consecutive PDCCH subframes the UE must keep active to monitor incoming retransmissions. One DRX retransmission timer can be configured for each HARQ process in the downlink (e.g., eight DRX retransmission timers). Retransmissions can be triggered after a negative acknowledgment (NACK). The DRX retransmission timer should be long enough to avoid receiving retransmissions while the UE is sleeping.

[0077] Due to the large propagation delay in the NTN, the DRX retransmission timer may not be long enough for the UE to receive or transmit communications as expected. Example 310 illustrates a service link 330 (D) that may involve long propagation delays. UE ) and feeder link 360 (D SAT For example, the maximum round-trip time (RTT) from the UE to the base station via a satellite in geostationary equatorial orbit (GEO) can exceed 500 milliseconds (ms), and for satellites in low Earth orbit (LEO), it can exceed 25-50 ms. If the DRX retransmission timer expires prematurely, the UE may be unable to receive the retransmission. Failed retransmissions can cause the UE, base station, and NTN entities to waste time, power, processing resources, and signaling resources on additional retransmissions that may also fail.

[0078] As pointed out above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0079] Figure 4 The figures illustrate examples 400, 410 of using timers to enhance coverage in an NTN according to various aspects of this disclosure.

[0080] If the UE can send HARQ feedback in advance, it can improve throughput in the NTN because new transmissions can be scheduled within the same HARQ process using the DRX retransmission timer. For eMTC, PDCCH-based HARQ feedback is supported in full-duplex (FD) mode instead of enhanced machine-type communication (eMTC) half-duplex (HD) mode or narrowband Internet of Things (NB-IoT) mode. For eMTC devices or NB-IoT devices operating in HD, PDCCH-based HARQ feedback can be supported, but the DRX retransmission timer may need to be adjusted.

[0081] Based on some aspects described herein, the UE can use an offset to initiate a DRX retransmission timer. The offset can correspond to the propagation delay from the UE via the NTN entity to the base station (e.g., gNB). The offset can replace or be added to the HARQ RTT timer. In this way, the UE can initiate the DRX retransmission timer later, or handle the DRX retransmission timer in a manner that takes into account the propagation delay involved by the NTN. Therefore, the UE can receive retransmissions or uplink grants during the DRX retransmission timer, and not receive retransmissions or uplink grants outside the DRX retransmission timer when the UE is in sleep mode. By enabling the UE to send or receive HARQ feedback or grants at appropriate times, the UE can enhance coverage and save resources that would otherwise be wasted due to additional retransmissions or missed uplink grants.

[0082] Example 400 illustrates an example of downlink HARQ for HARQ process 1. The UE can receive PDSCH and provide NACK during a DRX inactivity timer. By adding an offset to account for a longer propagation delay, the UE can receive retransmissions during a DRX retransmission timer. For example, the UE can set a timer that is set to the duration of the offset. The timer can start after the last repetition of sending HARQ feedback (e.g., NACK). If the UE is an NB-IoT device, the timer can have the duration of the offset plus an increment for the PDCCH, which is the number of the smallest time slots (e.g., subframes) after the last HARQ feedback transmission. After the timer expires, the UE can start a DRX retransmission timer.

[0083] In some aspects, the timer can be a downlink HARQ RTT timer set to offset. The downlink HARQ RTT timer can specify the minimum number of time slots (e.g., subframes) before the expected downlink HARQ retransmission. In some aspects, the downlink HARQ RTT timer may not be used or may have a duration set to zero. The UE may assume that the processing time for the base station to handle HARQ feedback is little or non-existent.

[0084] Example 410 illustrates uplink HARQ for HARQ process 1, where the UE transmits uplink communication on the PUSCH and receives uplink permission during the DRX retransmission timer after an offset. After the DRX retransmission timer expires, the UE can transmit a retransmission without receiving an acknowledgment (ACK). In Example 410, the UE may not use an uplink HARQ RTT timer, or it may use an uplink HARQ RTT timer set to zero. The uplink HARQ RTT timer can specify the minimum number of time slots (e.g., subframes) before the expected uplink HARQ retransmission permission. After transmitting uplink communication, the UE can start a timer with a duration at least partially based on the offset. The offset can correspond to the propagation delay from the UE via the NTN entity to the base station.

[0085] The timer can be a HARQ RTT timer, which has an offset duration or is extended by the offset, at least in part, based on the UE type. For example, for an eMTC device, the downlink HARQ RTT timer can include 7+N+offset or 7+N+3+offset, where 7 represents 7 symbols, N represents the number of symbols, and 3 represents 3 symbols. 7, N, and / or 3 can represent processing time. The uplink HARQ RTT timer can be equal to the offset. For an NB-IoT device, the downlink HARQ RTT timer can include k+N+offset+deltaPDCCH, where k can represent another number of symbols, and deltaPDCCH can be the interval from the last slot (e.g., subframe) of the associated HARQ feedback transmission plus three slots to the first slot of the next PDCCH timing. The uplink HARQ RTT timer can be equal to offset+deltaPDCCH, where deltaPDCCH can be the interval from the last slot (e.g., subframe) of the associated HARQ feedback transmission plus four slots to the first slot of the next PDCCH timing. In other words, the HARQ RTT timer can be adjusted via offset.

[0086] As pointed out above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4 The example described.

[0087] Figure 5 This is a diagram illustrating example 500 of the use of HARQ feedback group according to various aspects of this disclosure.

[0088] Example 500 illustrates the use of a HARQ RTT timer, where the HARQ feedback is a group HARQ feedback. The HARQ feedback can be an ACK or NACK for multiple HARQ processes (e.g., for both HARQ process 1 and HARQ process 2 shown in Example 500). The HARQ RTT timer can be a downlink HARQ timer that is at least partially based on an offset. For example, the duration of the HARQ RTT timer can be k+N+offset+deltaPDCCH. The group HARQ feedback can be at least partially based on PUCCH or PUSCH (e.g., a Media Access Control Control Element (MAC-CE)). The group HARQ feedback can be used for all HARQ processes or a bitmap indicating certain HARQ processes.

[0089] As pointed out above, Figure 5 This is provided as an example. Other examples may differ from the one provided. Figure 5 The example described.

[0090] Figure 6 This is a diagram illustrating example 600 of using a timer to enhance coverage in an NTN according to various aspects of this disclosure. As shown in the figure, Figure 6 This includes NTN entities 610 (e.g., base stations, relay stations), UE 620, and BS 630 (e.g., gNB) that can communicate with each other via satellite links. In some aspects, UE 620 may include a ground station.

[0091] As shown by reference numeral 640 in the attached figure, UE 620 can transmit communication. This communication can be an uplink transmission or a HARQ feedback for a downlink transmission. As shown by reference numeral 645 in the attached figure, UE 620 can start a timer. The timer can be used for retransmission scheduling or for HARQ feedback. The duration of the timer can be a value corresponding to the propagation delay between UE 620 and BS 630 via NTN entity 610. The duration of the timer can be referred to as an "offset" value. The timer can be a HARQRTT timer, which is the duration of the offset or extended by the offset.

[0092] As shown by reference numeral 650 in the attached figure, UE 620 can start a DRX timer after the timer expires. The DRX timer can be a DRX retransmission timer. As shown by reference numeral 655 in the attached figure, UE 620 can receive retransmissions during the DRX retransmission timer period. If the UE receives a HARQ NACK (or no response, depending on the configuration), UE 620 can send a retransmission after the DRX retransmission timer expires.

[0093] As pointed out above, Figure 6 This is provided as an example. Other examples may differ from the one provided. Figure 6 The example described.

[0094] Figure 7 This is a diagram illustrating an example 700 of an early transmission for a DRX retransmission timer according to various aspects of this disclosure.

[0095] In some scenarios, if the UE is an eMTC device operating in FD mode, PDCCH-based HARQ feedback can be supported. In some aspects, if the DRX retransmission timer is modified, eMTC devices or NB-IoT devices operating in HD mode (which operate in HD mode) can use PDCCH-based HARQ feedback to improve throughput (i.e., by reducing latency). For example, the UE can forgo using the HARQ RTT timer and can start the DRX retransmission timer after the last repetition of PUSCH transmission 702, as shown in Example 700. The gNB can send a PDCCH-based HARQ ACK 704 at time slot 706. The UE can receive the PDCCH-based HARQ ACK 704 from the gNB without waiting for the HARQ RTT timer to expire (or for a new HARQ transmission to be permitted). The PDCCH-based HARQ ACK 704 may have already been sent at time slot 706 so that it can be received at time slot 708 instead of time slot 710. The gNB can determine an estimate of the propagation delay and estimate that time slot 706 is received earlier than the last repetition by an amount equal to or greater than the propagation delay. Time slot 706 can also be the time slot in which the last repetition is transmitted. In some aspects, time slot 708 can be within the duration of the propagation delay after the transmission of the last repetition. In this way, the UE can receive HARQ feedback for the DRX retransmission timer earlier. In fact, once the UE completes the PUSCH transmission, the PDCCH-based HARQ ACK 704 or the uplink permission for the new transmission can reach the UE. This can be done if the gNB estimates the propagation delay. The PDCCH-based HARQ ACK 704 or the uplink permission for the new transmission can be received after the last repetition is transmitted or within a time period after the first repetition in the repetition is transmitted (whichever is later). By receiving HARQ feedback earlier during the DRX retransmission timer, the UE can increase throughput in the case of NTN due to the earlier transmission of HARQ feedback by the gNB. Increased throughput saves signaling resources and improves communication quality.

[0096] As pointed out above, Figure 7 This is provided as an example. Other examples may differ from the one provided. Figure 7 The example described.

[0097] Figure 8This is a diagram illustrating an example 800 of an early transmission for a DRX retransmission timer according to various aspects of this disclosure. As shown in the figure, Figure 8 This includes NTN entities 810 (e.g., base stations, relay stations), UE 820, and BS 830 that can communicate with each other via satellite links. In some aspects, UE 820 may include a ground station.

[0098] As shown by reference numeral 840, UE 820 may transmit repetitions of uplink communication on the PUSCH. As shown by reference numeral 845, BS 830 may determine the propagation delay between UE 820 and BS 830 via NTN entity 810. For example, BS 830 may estimate the propagation delay based at least in part on previous transmissions with uplink permission or HARQ feedback, the duration of a DRX inactivity timer or DRX retransmission timer configured at UE 820, and / or the time it takes to receive a new transmission or HARQ feedback.

[0099] Sometime before UE 820 sends the final repetition of uplink communication, BS 830 may send a HARQ feedback or uplink grant for new communication. BS 830 may send the HARQ feedback or uplink grant before UE 820 is expected to send the final repetition (when the DRX retransmission timer is started). UE 820 may then receive the HARQ feedback or uplink grant for a period of time after sending the first repetition, as indicated by reference numeral 850. This period of time may be less than the propagation delay, which instructs BS 830 to send the HARQ feedback or uplink grant earlier, at least in part, based on the propagation delay. Early HARQ feedback transmission saves time and increases throughput.

[0100] As shown in the attached figure (reference numeral 855), the UE 820 can start the DRX timer after the last repetition is sent. The DRX timer can be a DRX retransmission timer.

[0101] As pointed out above, Figure 8 This is provided as an example. Other examples may differ from the one provided. Figure 8 The example described.

[0102] Figure 9 This is a diagram illustrating example 900 of using an early transmission for a DRX retransmission timer according to various aspects of this disclosure.

[0103] In some scenarios, if decoding all repetitions of the PUSCH is required for successful reception (applicable to both HD and FD), the base station may not send HARQ feedback based on the PDCCH. Without using a HARQ RTT timer, the DRX retransmission timer may not be long enough to account for the long propagation delays in NTN cases, as indicated by the "X" in PDCCH communication 902 in Example 900. For example, the maximum value of the DRX retransmission timer may be less than the propagation delay of an eMTC or NB-IoT device.

[0104] In some aspects, the UE can delay the start of the DRX retransmission timer by an offset. This offset can correspond to the propagation delay. In some aspects, the DRX retransmission timer can be extended by an offset. In some aspects, the DRX retransmission timer can be configured to have a longer range of values, at least in part, based on a propagation delay estimate or an estimated range. In this way, the UE can avoid missing PDCCH communications 902. To save power, when the DRX retransmission timer is configured to be longer, the UE can monitor the PDCCH at a greater periodicity.

[0105] As pointed out above, Figure 9 This is provided as an example. Other examples may differ from the one provided. Figure 9 The example described.

[0106] Figure 10 This is a diagram illustrating Example 1000 of HARQ feedback signaling according to various aspects of this disclosure. Example 1000 illustrates a UE transmitting duplicates for a first transport block (TB1) and for a second transport block (TB2).

[0107] When PDCCH-based HARQ feedback is configured, the UE can stop the DRX retransmission timer for all completed PUSCH transmissions (applicable to both HD and FD). However, due to the long propagation delay, the gNB may send PDCCH-based HARQ feedback (e.g., ACK) 1002 for TB1 before completing the transmission for PUSCH communication for TB2. When the PDCCH-based HARQ feedback 1002 for TB1 arrives at the UE, retransmission for TB2 may be in progress. The PDCCH-based HARQ feedback 1002 for TB1 may incorrectly force the UE to stop the DRX retransmission timer for TB2 and incorrectly terminate additional retransmissions for TB2.

[0108] In some aspects, the UE can modify the PDCCH-based HARQ feedback to include an indication of whether the HARQ feedback corresponds to all HARQ processes or only to the first HARQ process running the DRX retransmission timer. For example, the UE can use a frequency hopping flag set to "1" to indicate that the UE has a three-bit field for the HARQ process number and / or the next three bits indicating the HARQ process ID. If the frequency hopping flag is set to "0", there is no change in the HARQ feedback process.

[0109] In some respects, the UE can determine the HARQ process to which the HARQ feedback is targeted, at least in part, based on the offset corresponding to the propagation delay. For example, the UE can determine at least in (nK offset PUSCH transmission was performed at a time slot (e.g., a subframe), where n is the time slot for receiving HARQ feedback, and K offset This corresponds to the propagation delay. In other words, the UE can use the propagation delay to backtrack from HARQ feedback to identify HARQ processes. If the DRX retransmission timer is running, the UE can stop the DRX retransmission timer used for that HARQ process, or if the DRX retransmission timer is not running, the UE will not start the DRX retransmission timer. By not mistakenly stopping DRX retransmission timers used for other HARQ processes, the UE can improve communication and save processing and signaling resources that would otherwise be wasted on additional retransmissions.

[0110] As pointed out above, Figure 10 This is provided as an example. Other examples may differ from the one provided. Figure 10 The example described.

[0111] Figure 11 This is a diagram illustrating, for example, an example process 1100 performed by a UE according to various aspects of this disclosure. Example process 1100 is where the UE (e.g., Figure 1-3 The UE 120 depicted in the text Figure 4-5 UE in Figure 6 The example described in the document (UE 620) demonstrates the operation associated with a timer for enhanced coverage with NTN.

[0112] like Figure 11 As shown, in some aspects, process 1100 may include: starting a timer after a repetition of communication (block 1110). For example, the UE (e.g., using...) Figure 14The timer component 1408 depicted can start after a repetition of communication, as described above. In some aspects, the duration of the timer includes an offset corresponding to the propagation delay between the UE and the base station via the NTN entity. In some aspects, the timer can be started after transmitting communication or after receiving communication. In some aspects, the timer can be a timer for retransmission scheduling.

[0113] like Figure 11 As further shown, in some aspects, process 1100 may include: starting a DRX timer after the timer expires (block 1120). For example, the UE (e.g., using...) Figure 14 The timer component 1408 described herein can start the DRX timer after the timer expires, as described above. The DRX timer can be a DRX retransmission timer.

[0114] Process 1100 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other processes described elsewhere herein.

[0115] In the first aspect, the UE is an eMTC or NB-IoT device operating in half-duplex mode.

[0116] In the second aspect, either alone or in combination with the first aspect, the communication includes HARQ feedback for downlink communication.

[0117] In the third aspect, either alone or in combination with one or more of the first and second aspects, the communication includes uplink communication on a physical uplink shared channel or downlink communication on a PDSCH.

[0118] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the timer is not a HARQ RTT, and the duration is equal to the offset.

[0119] In the fifth aspect, either alone or in combination with one or more of the first through fourth aspects, the timer is a HARQ RTT extended by an offset. In some aspects, the offset replaces the constant value used in the calculation of the RTT length.

[0120] In the sixth aspect, HARQ feedback includes group HARQ feedback, either alone or in combination with one or more aspects from the first to the fifth aspects.

[0121] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the repetition of communication is the first repetition or a designated repetition number in the repetition of communication.

[0122] In the eighth aspect, either alone or in combination with one or more of the first through seventh aspects, if the timer expires before the last repetition, the DRX retransmission timer is started after the last repetition of the communication.

[0123] Although Figure 11 An example box of process 1100 is shown, but in some aspects, process 1100 may include... Figure 11 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 1100 may be executed in parallel.

[0124] Figure 12 This is a diagram illustrating, for example, an example process 1200 performed by a UE according to various aspects of this disclosure. Example process 1200 is where the UE (e.g., Figure 1-3 The UE 120 depicted in the text Figure 7 and 9 The UE depicted in -10 Figure 8 The example described in the document (UE820) demonstrates the operation associated with a timer for enhanced coverage with NTN.

[0125] like Figure 12 As shown, in some aspects, process 1200 may include: sending a repetition of uplink communication to the base station (box 1210). For example, the UE (e.g., using...) Figure 15 The transmitting component 1504 described herein can transmit uplink communication repeats to the base station, as described above.

[0126] like Figure 12 As further shown, in some aspects, process 1200 may include: monitoring the PDCCH to receive HARQ feedback or uplink permission for a new transmission during a time period following the first repetition in the transmission repetition (box 1220). For example, the UE (e.g., using...) Figure 15 The receiving component 1502 described herein can monitor the PDCCH to receive HARQ feedback or uplink permission for new transmission during a time period following the first repetition in the transmission repetitions, as described above. In some aspects, this time period corresponds to the propagation delay from the NTN entity to the base station.

[0127] like Figure 12 As further shown, in some aspects, process 1200 may include: starting a DRX retransmission timer (block 1230) after the last repetition in the transmission repetition. For example, the UE (e.g., using...) Figure 15 The timer component 1508 described herein can start the DRX retransmission timer after the last repetition in the transmission repetition, as described above.

[0128] Process 1200 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other processes described elsewhere herein.

[0129] In a first aspect, receiving HARQ feedback or uplink permission includes receiving HARQ feedback or uplink permission within the following time slots: two time slots after the last repeat is transmitted, or a time period after the first repeat in the transmission, whichever is later. In some aspects, receiving HARQ feedback or uplink permission includes receiving HARQ feedback or uplink permission within two time slots after the last repeat is transmitted.

[0130] In the second aspect, starting the DRX retransmission timer, either alone or in combination with the first aspect, includes starting the DRX retransmission timer after a period of time at least partially based on the propagation delay.

[0131] In the third aspect, starting the DRX retransmission timer, either alone or in combination with one or more of the first and second aspects, includes extending the DRX retransmission timer at least in part based on an offset of the propagation delay.

[0132] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the DRX retransmission timer has a duration at least in part based on the propagation delay.

[0133] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 1200 includes: at least in part based on receiving an indication regarding HARQ feedback corresponding to all HARQ processes associated with the DRX retransmission timer, stopping the DRX retransmission timer if it is running, or not starting the DRX retransmission timer if it is not running.

[0134] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 1200 includes: determining the HARQ process corresponding to the HARQ feedback based at least in part on the propagation delay; and stopping the DRX retransmission timer associated with the HARQ process.

[0135] Although Figure 12 An example box of process 1200 is shown, but in some aspects, process 1200 may include... Figure 12 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 1200 may be executed in parallel.

[0136] Figure 13 This is a diagram illustrating, for example, an example process 1300 performed by a base station according to various aspects of this disclosure. Example process 1300 is where a base station (e.g., Figure 1-2 Base station 110 depicted in the text Figure 3 Satellite 340 or Gateway 350 as depicted in the text Figure 7 and 9 gNB depicted in -10 Figure 8 The example depicted in the image shows the BS 830 performing operations associated with a timer for enhanced coverage with NTN.

[0137] like Figure 13 As shown, in some aspects, process 1300 may include: receiving a repeat of uplink communication from the UE (block 1310). For example, the base station (e.g., using...) Figure 16 The receiving component 1602 described herein can receive repeats of uplink communication from the UE, as described above.

[0138] like Figure 13 Further, in some aspects, process 1300 may include: sending an uplink grant for new transmission or a HARQ feedback for uplink communication to the UE during a time period prior to receiving the last repetition in the repetition from the UE (box 1320). For example, the base station (e.g., using...) Figure 16 The transmitting component 1604 described herein may send an uplink grant for new transmission or a HARQ feedback for uplink communication to the UE during a period of time prior to receiving the last repetition of the repetition from the UE, as described above. In some aspects, this period of time is at least partially based on the propagation delay between the UE and the base station via the NTN entity.

[0139] Process 1300 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other processes described elsewhere herein.

[0140] In the first aspect, this time period is equal to or greater than the propagation delay.

[0141] In the second aspect, either alone or in combination with the first aspect, the uplink grant or HARQ feedback is sent by the base station such that the uplink grant or HARQ feedback is received by the UE after the UE sends the last repeat, or after a second time period following the first repeat in the sent repeat, whichever is later. In some aspects, the uplink grant or HARQ feedback is sent by the base station such that the uplink grant or HARQ feedback is received by the UE within two time slots after the UE sends the last repeat.

[0142] In a third aspect, either alone or in combination with one or more of the first and second aspects, process 1300 includes: sending an indication that the HARQ feedback corresponds to a specific HARQ process associated with the DRX retransmission timer. In some aspects, process 1300 includes: sending an indication that the HARQ feedback corresponds to all HARQ processes associated with the DRX retransmission timer.

[0143] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, process 1300 includes: sending an indication regarding HARQ feedback for a first HARQ process associated with the DRX retransmission timer.

[0144] Although Figure 13 An example box of process 1300 is shown, but in some aspects, process 1300 may include... Figure 13 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 1300 may be executed in parallel.

[0145] Figure 14 This is a block diagram of an example device 1400 for wireless communication. Device 1400 may be a UE, or a UE may include device 1400. In some aspects, device 1400 includes a receiving component 1402 and a transmitting component 1404, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1400 can use the receiving component 1402 and the transmitting component 1404 to communicate with another device 1406 (such as a UE, a base station, or another wireless communication device). As further shown, device 1400 may include a timer component 1408 and other examples.

[0146] In some respects, device 1400 can be configured to perform the functions described herein. Figure 1-10 One or more operations described herein. Alternatively or concurrently, the apparatus 1400 may be configured to perform one or more processes described herein, such as... Figure 11 The process 1100 or a combination thereof. In some respects, Figure 14 The device 1400 and / or one or more components shown may include the above-described components. Figure 2 One or more components of the UE as described. Alternatively or in addition, Figure 14 One or more components shown can be combined with the above. Figure 2The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in 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.

[0147] Receiver 1402 may receive communications from device 1406, such as reference signals, control information, data communications, or combinations thereof. Receiver 1402 may provide the received communications to one or more other components of device 1400. In some aspects, receiver 1402 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1406. In some aspects, receiver 1402 may include the elements described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0148] Transmitting component 1404 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1406. In some aspects, one or more other components of device 1406 can generate communications and provide the generated communications to transmitting component 1404 for transmission to device 1406. In some aspects, transmitting component 1406 can perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples) on the generated communications and can transmit the processed signal to device 1406. In some aspects, transmitting component 1404 can include the combinations described above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1404 may be co-located with the receive component 1402 in a transceiver.

[0149] The timer component 1408 can start a timer after a repetition of communication, wherein the calculation of the timer length includes an offset corresponding to the propagation delay between the UE and the base station via the NTN entity. The timer component 1408 can start a DRX retransmission timer after the timer expires.

[0150] Figure 14 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 14The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 14 The two or more components shown can be implemented within a single component, or Figure 14 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 14 The set (one or more) components shown can perform actions described by Figure 14 The other set of components shown performs one or more functions.

[0151] Figure 15 This is a block diagram of an example device 1500 for wireless communication. Device 1500 may be a UE, or a UE may include device 1500. In some aspects, device 1500 includes a receiving component 1502 and a transmitting component 1504, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1500 can use the receiving component 1502 and the transmitting component 1504 to communicate with another device 1506 (such as a UE, a base station, or another wireless communication device). As further shown, device 1500 may include a timer component 1508 and / or a determining component 1510, and other examples.

[0152] In some respects, device 1500 can be configured to perform the functions described herein. Figure 1-10 One or more operations described herein. Alternatively or concurrently, the apparatus 1500 may be configured to perform one or more processes described herein, such as... Figure 12 The process is 1200. In some respects, Figure 15 The device 1500 and / or one or more components shown may include the above-described components. Figure 2 One or more components of the UE as described. Alternatively or in addition, Figure 15 One or more components shown can be combined with the above. Figure 2 The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in 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.

[0153] Receiver 1502 may receive communications from device 1506, such as reference signals, control information, data communications, or combinations thereof. Receiver 1502 may provide the received communications to one or more other components of device 1500. In some aspects, receiver 1502 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1506. In some aspects, receiver 1502 may include the combinations described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0154] Transmitting component 1504 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1506. In some aspects, one or more other components of device 1506 can generate communications and provide the generated communications to transmitting component 1504 for transmission to device 1506. In some aspects, transmitting component 1506 can perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples) on the generated communications and can transmit the processed signal to device 1506. In some aspects, transmitting component 1504 can include the combinations described above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1504 may be co-located with the receive component 1502 in a transceiver.

[0155] Transmitting component 1504 can transmit uplink communication repetitions to the base station. Receiving component 1502 can monitor the PDCCH to receive HARQ feedback or uplink permission for new transmission during a time period following the first repetition in the transmission repetition, wherein this time period is less than the propagation delay to the base station via the NTN entity. Timer component 1508 can start a DRX retransmission timer after the last repetition in the transmission repetition.

[0156] Timer component 1508 may, at least in part, based on receiving an indication from control channel bits that the HARQ feedback corresponds to a specific HARQ process associated with the DRX retransmission timer, stop the DRX retransmission timer if it is running, or not start it if it is not running. Determination component 1510 may, at least in part, determine the HARQ process corresponding to the HARQ feedback based on propagation delay. Timer component 1508 may stop the DRX retransmission timer associated with the HARQ process.

[0157] Figure 15 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 15 The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 15 The two or more components shown can be implemented within a single component, or Figure 15 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 15 The set (one or more) components shown can perform actions described by Figure 15 The other set of components shown performs one or more functions.

[0158] Figure 16 This is a block diagram of an example device 1600 for wireless communication. Device 1600 may be a base station, or a base station may include device 1600. In some aspects, device 1600 includes a receiving component 1602 and a transmitting component 1604, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1600 can use the receiving component 1602 and the transmitting component 1604 to communicate with another device 1606 (such as a UE, a base station, or another wireless communication device). As further shown, device 1600 may include one or more of the determining components 1608, and other examples.

[0159] In some respects, device 1600 can be configured to perform the functions described herein. Figure 1-10 One or more operations described herein. Alternatively or concurrently, the apparatus 1600 may be configured to perform one or more processes described herein, such as... Figure 13 The process is 1300. In some respects, Figure 16 The device 1600 and / or one or more components shown may include the above-described components. Figure 2 One or more components of the described base station. Alternatively, Figure 16 One or more components shown can be combined with the above. Figure 2The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in 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.

[0160] Receiver 1602 may receive communications from device 1606, such as reference signals, control information, data communications, or combinations thereof. Receiver 1602 may provide the received communications to one or more other components of device 1600. In some aspects, receiver 1602 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1606. In some aspects, receiver 1602 may include the combinations described above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0161] Transmitting component 1604 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1606. In some aspects, one or more other components of device 1606 can generate communications and provide the generated communications to transmitting component 1604 for transmission to device 1606. In some aspects, transmitting component 1606 can perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples) on the generated communications and can transmit the processed signal to device 1606. In some aspects, transmitting component 1604 can include the above-described combinations. Figure 2 The described base station includes one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof. In some aspects, the transmit component 1604 may be co-located with the receive component 1602 in a transceiver.

[0162] The receiving component 1602 can receive repeats of uplink communication from the UE. The transmitting component 1604 can send an uplink grant for new transmission or a HARQ feedback for uplink communication to the UE during a time period before receiving the last repeat in the repeats from the UE, wherein this time period is based at least in part on the propagation delay between the UE and the base station via the NTN entity. The determining component 1608 can determine the propagation delay.

[0163] The transmitting component 1604 can transmit an indication of HARQ feedback corresponding to a specific HARQ process associated with the DRX retransmission timer, or an indication of HARQ feedback corresponding to all HARQ processes associated with the DRX retransmission timer. The transmitting component 1604 can also transmit an indication of HARQ feedback for the first HARQ process associated with the DRX retransmission timer.

[0164] Figure 16 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 16 The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 16 The two or more components shown can be implemented within a single component, or Figure 16 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 16 The set (one or more) components shown can perform actions described by Figure 16 The other set of components shown performs one or more functions.

[0165] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made based on the foregoing disclosure, or modifications and variations may be derived from practice in the aspects.

[0166] The following provides a summary of some aspects of this disclosure:

[0167] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: starting a timer after a repetition of communication, wherein the length of the timer is calculated including an offset corresponding to a propagation delay between the UE and a base station via a non-terrestrial network (NTN) entity; and starting a discontinuous reception (DRX) retransmission timer after the timer expires.

[0168] Aspect 2: The method according to claim 1, wherein the repetition of the communication is a first repetition or a specified repetition number in the repetition of the communication.

[0169] Aspect 3: The method according to aspect 1 or 2, wherein the UE is an enhanced machine-type communication device or a narrowband Internet of Things device operating in half-duplex mode.

[0170] Aspect 4: The method according to any one of Aspects 1-3, wherein the communication includes Hybrid Automatic Repeat Request (HARQ) feedback for downlink communication.

[0171] Aspect 5: The method according to any one of Aspects 1-4, wherein the communication includes uplink communication on a physical uplink shared channel or downlink communication on a physical downlink shared channel.

[0172] Aspect 6: The method according to any one of Aspects 1-5, wherein if the timer expires before the last repetition of the communication, the DRX retransmission timer is started after the last repetition.

[0173] Aspect 7: The method according to any one of Aspects 1-6, wherein the timer is not a Hybrid Automatic Repeat Request (HARQ) Round-Trip Timer (RTT), and the duration is equal to the offset.

[0174] Aspect 8: The method according to any one of Aspects 1-6, wherein the timer is a Hybrid Automatic Repeat Request (HARQ) Round Trip Timer (RTT) that extends the offset, wherein the offset replaces a constant value used in the calculation of the RTT length.

[0175] Aspect 9: The method according to any one of Aspects 1-8, wherein the Hybrid Automatic Repeat Request (HARQ) feedback includes group HARQ feedback.

[0176] Aspect 10: A method of wireless communication performed by a user equipment (UE), comprising: transmitting a repetition of uplink communication to a base station; monitoring a physical downlink control channel to receive a Hybrid Automatic Repeat Request (HARQ) feedback or uplink permission for a new transmission during a time period following the transmission of a first repetition of the repetition, wherein the time period corresponds to a propagation delay to the base station via a non-terrestrial network (NTN) entity; and starting a discontinuous reception (DRX) retransmission timer after the transmission of the last repetition of the repetition.

[0177] Aspect 11: According to the method of aspect 10, receiving the HARQ feedback or the uplink grant includes receiving the HARQ feedback or the uplink grant in the following time periods: after sending the last repeat, or after sending the first repeat in the repeat, whichever is later.

[0178] Aspect 12: The method according to aspect 10 or 11, wherein starting the DRX retransmission timer includes starting the DRX timer after a time delay based at least in part on the propagation delay.

[0179] Aspect 13: The method according to any one of Aspects 10-12, wherein starting the DRX retransmission timer comprises: extending the DRX timer at least in part based on an offset of the propagation delay.

[0180] Aspect 14: The method according to any one of Aspects 10-13, wherein the DRX timer has a duration at least in part based on the propagation delay.

[0181] Aspect 15: The method according to any one of Aspects 10-14 further comprises: at least in part based on receiving from control channel bits an indication that the HARQ feedback corresponds to a specific HARQ process associated with the DRX retransmission timer, stopping the DRX retransmission timer if the DRX retransmission timer is running, or not starting the DRX retransmission timer if the DRX retransmission timer is not running.

[0182] Aspect 16: The method according to any one of Aspects 10-15 further includes: determining the HARQ process corresponding to the HARQ feedback based at least in part on the propagation delay; and stopping the DRX retransmission timer associated with the HARQ process.

[0183] Aspect 17: A method of wireless communication performed by a base station, comprising: receiving a repeat of uplink communication from a user equipment (UE); and sending to the UE an uplink grant for a new transmission or a Hybrid Automatic Repeat Request (HARQ) feedback for the uplink communication during a first time period prior to receiving the last repeat of the repeat from the UE, wherein the first time period is based at least in part on a propagation delay between the UE and the base station via a non-terrestrial network (NTN) entity.

[0184] Aspect 18: The method according to aspect 17, wherein the first time period is equal to or greater than the propagation delay.

[0185] Aspect 19: The method according to aspect 17 or 18, wherein the uplink grant or the HARQ feedback is sent by the base station such that the uplink grant or the HARQ feedback is received by the UE in either of the following time periods: after the UE sends the last repetition, or after the first repetition in the repetition, whichever is later.

[0186] Aspect 20: The method according to any one of aspects 17-19 further includes: sending an indication that the HARQ feedback corresponds to a specific HARQ process associated with a discontinuous receive retransmission timer.

[0187] Aspect 21: The method according to any one of aspects 17-19 further includes: sending an indication regarding the HARQ feedback for a first HARQ process associated with the discontinuous receive retransmission timer.

[0188] Aspect 22: 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 one or more of aspects 1-21.

[0189] Aspect 23: 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 being configured to perform the method according to one or more of aspects 1-21.

[0190] Aspect 24: An apparatus for wireless communication, comprising at least one unit for performing the method according to one or more of aspects 1-21.

[0191] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by a processor to perform the methods described in accordance with one or more of aspects 1-21.

[0192] Aspect 26: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform the method according to one or more aspects of aspects 1-21.

[0193] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, "software" should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures and / or functions, and other examples. As used herein, processors are implemented using hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented using various forms of hardware and / or combinations of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not a limitation in any respect. Therefore, while the operation and behavior of systems and / or methods are described herein without reference to specific software code, it is to be understood that software and hardware can be designed to implement systems and / or methods, at least in part, based on the descriptions herein.

[0194] As used in this article, depending on the context, satisfying the threshold can refer to a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0195] Even if a specific combination of features is recited in the claims and / or disclosed in the specification, such combinations are not intended to limit the disclosure of the aspects. In fact, many of these features can be combined in ways that are not specifically recited in the claims and / or specifically disclosed in the specification. While each dependent claim listed below may directly depend on only one claim, the disclosure of an aspect includes a combination of each dependent claim with every other claim in the claim set. As used herein, the phrase “at least one of” in the 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, as well as any combination of multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0196] None of the elements, actions, or instructions used herein should be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are interchangeable with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced in combination with the article “the” and is interchangeable with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and are interchangeable with “one or more.” Where only one item is anticipated, the phrase “only one” or similar language is used. Furthermore, as used herein, the terms “has,” “have,” “having,” etc., are intended to be open-ended terms. Furthermore, unless explicitly stated otherwise, the phrase “based on” is intended to mean “at least partially based on.” Furthermore, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and / or” unless otherwise expressly stated (e.g., if used in conjunction with “any” or “only one of”).

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors are operatively coupled to the memory, and the memory and the one or more processors are configured to: A timer is started after the communication is repeated, wherein the length of the timer is calculated including an offset corresponding to the propagation delay between the UE and the network node via a non-terrestrial network (NTN) entity; and A discontinuous reception (DRX) retransmission timer is started after the timer expires, wherein if the timer expires before the last repetition of the communication, the DRX retransmission timer is started after the last repetition.

2. The UE according to claim 1, wherein, The repetition in the communication is either the first repetition or a specified repetition number in the repetitions used in the communication.

3. The UE according to claim 1, wherein, The UE is an enhanced machine-type communication device or a narrowband Internet of Things device that operates in half-duplex mode.

4. The UE according to claim 1, wherein, The communication includes Hybrid Automatic Repeat Request (HARQ) feedback for downlink communication.

5. The UE according to claim 1, wherein, The communication includes uplink communication on a physical uplink shared channel or downlink communication on a physical downlink shared channel.

6. The UE according to claim 1, wherein, The timer is not a Hybrid Automatic Repeat Request (HARQ) Round-Trip Timer (RTT), and its duration is equal to the offset.

7. The UE according to claim 1, wherein, The timer is a Hybrid Automatic Repeat Request (HARQ) Round-Trip Timer (RTT) that extends the offset, and wherein the offset replaces a constant value used in the calculation of the RTT length.

8. The UE according to claim 4, wherein, The Hybrid Automatic Repeat Request (HARQ) feedback includes group HARQ feedback.

9. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors are operatively coupled to the memory, and the memory and the one or more processors are configured to: Repeatedly sending uplink communication to network nodes; Monitor the physical downlink control channel to receive Hybrid Automatic Repeat Request (HARQ) feedback or uplink permission for new transmission during a time period following the first repetition of the repetition, wherein the time period corresponds to the propagation delay to the network node via a non-terrestrial network (NTN) entity. as well as After the last repetition of the repetition is sent, the Discontinuous Receive (DRX) retransmission timer is started.

10. The UE according to claim 9, wherein, The DRX retransmission timer is started without using the HARQ round-trip timer, and the HARQ feedback or the uplink permission is received during the DRX retransmission timer.

11. The UE according to claim 9, wherein, When the HARQ feedback or the uplink grant is received, the one or more processors are configured to receive the HARQ feedback or the uplink grant at the following time: a period of time after sending the last repeat or after sending the first repeat in the repeat, whichever is later.

12. The UE according to claim 9, wherein, When the DRX retransmission timer is started, the one or more processors are configured to start the DRX retransmission timer after a period of time based at least in part on the propagation delay.

13. The UE according to claim 9, wherein, When the DRX retransmission timer is started, the one or more processors are configured to extend the DRX retransmission timer at least in part based on the offset of the propagation delay.

14. The UE according to claim 9, wherein, The DRX retransmission timer has a duration based at least in part on the propagation delay.

15. The UE according to claim 9, wherein, The one or more processors are further configured to: at least in part based on receiving an indication from control channel bits that indicates the HARQ feedback corresponds to a specific HARQ process associated with the DRX retransmission timer, stop the DRX retransmission timer if it is running, or not start the DRX retransmission timer if it is not running.

16. The UE according to claim 9, wherein, The one or more processors are further configured to: The HARQ process corresponding to the HARQ feedback is determined at least in part based on the propagation delay; and Stop the DRX retransmission timer associated with the HARQ process.

17. A network node for wireless communication, comprising: Memory; as well as One or more processors are operatively coupled to the memory, and the memory and the one or more processors are configured to: Repeated uplink communication received from user equipment (UE); as well as Before receiving the last repetition of the repetition from the UE, an uplink grant for new transmission or a Hybrid Automatic Repeat Request (HARQ) feedback for the uplink communication is sent to the UE during a first time period, wherein the first time period is based at least in part on the propagation delay between the UE and the network node via a non-terrestrial network (NTN) entity.

18. The network node according to claim 17, wherein, The first time period is equal to or greater than the propagation delay.

19. The network node according to claim 17, wherein, The uplink grant or the HARQ feedback is sent by the network node such that the uplink grant or the HARQ feedback is received by the UE at the later of the following time periods: after the UE sends the last repeat or after the first repeat in the repeat.

20. The network node according to claim 17, wherein, The one or more processors are also configured to send an indication that the HARQ feedback corresponds to a specific HARQ process associated with the discontinuous receive retransmission timer.

21. The network node according to claim 17, wherein, The one or more processors are also configured to send instructions regarding the HARQ feedback for a first HARQ process associated with the discontinuous receive retransmission timer.

22. A method for wireless communication performed by a user equipment (UE), comprising: A timer is started after the communication is repeated, wherein the length of the timer is calculated including an offset corresponding to the propagation delay between the UE and the network node via a non-terrestrial network (NTN) entity; and A discontinuous reception (DRX) timer is started after the timer expires, wherein if the timer expires before the last repetition of the communication, the DRX retransmission timer is started after the last repetition.

23. The method according to claim 22, wherein, The repetition in the communication is either the first repetition or a specified repetition number in the repetitions used in the communication.

24. The method according to claim 22, wherein, The UE is an enhanced machine-type communication device or a narrowband Internet of Things device that operates in half-duplex mode.

25. The method according to claim 22, wherein, The communication includes uplink communication on a physical uplink shared channel or downlink communication on a physical downlink shared channel.

26. The method according to claim 22, wherein, The timer is not a HARQ round-trip timer (RTT), and its duration is equal to the offset.

27. The method according to claim 22, wherein, The timer is a HARQ round-trip timer (RTT) that extends the offset, and wherein the offset replaces the constant value used in the calculation of the RTT length.

28. The method according to claim 22, wherein, The communication includes Hybrid Automatic Repeat Request (HARQ) feedback for downlink communication, and wherein the HARQ feedback includes group HARQ feedback.

29. A method for wireless communication performed by a user equipment (UE), comprising: Repeatedly sending uplink communication to network nodes; Monitor the physical downlink control channel to receive Hybrid Automatic Repeat Request (HARQ) feedback or uplink permission for new transmission during a time period following the first repetition of the repetition, wherein the time period corresponds to the propagation delay to the network node via a non-terrestrial network (NTN) entity. as well as After the last repetition of the repetition is sent, the Discontinuous Receive (DRX) retransmission timer is started.

30. The method according to claim 29, wherein, The DRX retransmission timer is started without using the HARQ round-trip timer, and the HARQ feedback or the uplink permission is received during the DRX retransmission timer.

31. The method of claim 29, further comprising: When the HARQ feedback or the uplink permission is received, the HARQ feedback or the uplink permission is received at the following time: a period of time after the last repetition is sent or after the first repetition in the repetition is sent, whichever is later.

32. The method of claim 29, further comprising: When the DRX retransmission timer is started, the DRX retransmission timer is started at least in part after the time period based on the propagation delay.

33. The method of claim 29, further comprising: When the DRX retransmission timer is started, the DRX retransmission timer is extended at least in part based on the offset of the propagation delay.

34. The method according to claim 29, wherein, The DRX retransmission timer has a duration based at least in part on the propagation delay.

35. The UE according to claim 29, further comprising: Based at least in part on receiving an indication from the control channel bits that the HARQ feedback corresponds to a specific HARQ process associated with the DRX retransmission timer, the DRX retransmission timer is stopped if it is running, or it is not started if it is not running.

36. The method of claim 29, further comprising: The HARQ process corresponding to the HARQ feedback is determined at least in part based on the propagation delay; as well as Stop the DRX retransmission timer associated with the HARQ process.

37. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions, when executed by one or more processors of a user equipment (UE), cause the UE to perform the method of any one of claims 22-36.

38. An apparatus for wireless communication, comprising: Units for performing the method according to any one of claims 22-36.

Images