User equipment timing mismatch reporting in non-terrestrial networks

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may determine timing misalignment information about a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell. The UE may transmit the timing misalignment information to a satellite associated with the non-terrestrial cell. Numerous other aspects are described.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This patent application claims priority to U.S. Provisional Patent Application No. 62 / 706,060, entitled "USER EQUIPMENT TIMING MISALIGNMENT REPORTING IN NON-TERRESTRIAL NETWORKS," filed July 29, 2020, and U.S. Non-Provisional Patent Application No. 17 / 303,801, entitled "USER EQUIPMENT TIMING MISALIGNMENT REPORTING IN NON-TERRESTRIAL NETWORKS," filed June 8, 2021, which are expressly incorporated herein by reference.

[0002] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for user equipment (UE) timing mismatch reporting in non-terrestrial networks. [Background technology]

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. A typical wireless communication system may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a set of extensions to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the 3rd Generation Partnership Project (3GPP®).

[0004] A wireless network may include several base stations (BSs) that can support communication for several user equipments (UEs). The UEs may communicate with the BSs via a downlink and an uplink. The "downlink" (or "forward link") refers to the communication link from the BS to the UE, and the "uplink" (or "reverse link") refers to the communication link from the UE to the BS. As described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0005] The above multiple access technologies have been adopted in various telecommunications standards to provide common protocols that enable different user equipment to communicate on a city, national, regional, or even global scale. NR, sometimes referred to as 5G, is a set of extensions to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering 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 OFDM (DFT-s-OFDM)) on the uplink (UL), as well as better integration with other open standards that support beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As demand for mobile broadband access continues to grow, further improvements in LTE, NR, and other radio access technologies remain useful. Summary of the Invention [Means for solving the problem]

[0006] In some aspects, a method of wireless communication performed by a user equipment (UE) includes determining timing misalignment information about a timing misalignment between an uplink timeline and a downlink timeline of the UE associated with a non-terrestrial cell, and transmitting the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0007] In some aspects, a method of wireless communication performed by a UE includes receiving an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and transmitting the uncompensated uplink signal to the satellite based at least in part on receiving the instruction, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing mismatch between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0008] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, wherein the memory and the one or more processors are configured to determine timing mismatch information about a timing mismatch between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, and transmit the timing mismatch information to a satellite associated with the non-terrestrial cell.

[0009] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, wherein the memory and the one or more processors are configured to receive an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell, and, based at least in part on receiving the instruction, transmit the uncompensated uplink signal to the satellite, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing mismatch between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0010] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to determine timing misalignment information about a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, and transmit the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0011] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communications includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to receive an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell, and, based at least in part on receiving the instruction, transmit the uncompensated uplink signal to the satellite, where the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0012] In some aspects, an apparatus for wireless communication includes means for determining timing mismatch information for a timing mismatch between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, and means for transmitting the timing mismatch information to a satellite associated with the non-terrestrial cell.

[0013] In some aspects, an apparatus for wireless communication includes means for receiving an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and means for transmitting the uncompensated uplink signal to the satellite based at least in part on receiving the instruction, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing mismatch between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0014] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to and as illustrated by the drawings and this specification.

[0015] The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages are described below. The concepts and examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The nature of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in conjunction with the accompanying figures. Each of the figures is provided for the purpose of illustration and description, and not as a definition of the limits of the claims.

[0016] Although aspects are described in this disclosure by illustrating some examples, those skilled in the art will understand that such aspects can be implemented in many different configurations and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging configurations. For example, some aspects may be implemented via integrated chip embodiments or other non-modular component-based devices (e.g., end-user devices, vehicles, communications devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, or artificial intelligence-enabled devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. Devices incorporating the described aspects and features may include additional components and features for the implementation and practice of the claimed and described aspects. For example, transmission and reception of wireless signals may include several components for analog and digital applications (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or summers). It is contemplated that the aspects described herein may be practiced in a wide variety of devices, components, systems, distributed configurations, or end-user devices of various sizes, shapes, and configurations.

[0017] So that the above-listed features of the present disclosure may be understood in detail, a more detailed description briefly summarized above may be had by reference to embodiments, some of which are shown in the accompanying drawings. However, since the present description may admit of other equally effective embodiments, it should be noted that the accompanying drawings illustrate only some typical embodiments of the present disclosure and therefore should not be considered limiting of its scope. The same reference numbers in different drawings may identify the same or similar elements. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 illustrates an example of a wireless network according to the present disclosure. [Figure 2] FIG. 1 illustrates an example of a base station in communication with a UE in a wireless network, in accordance with the present disclosure. [Figure 3] FIG. 1 illustrates an example of a frame structure in a wireless communication network according to the present disclosure. [Figure 4] 1 illustrates an example of a regenerative satellite deployment and an example of a transparent satellite deployment in a non-terrestrial network. [Figure 5] FIG. 1 illustrates an example of timing alignment in a non-terrestrial network in accordance with the present disclosure. [Figure 6] FIG. 1 illustrates an example associated with UE timing mismatch reporting in a non-terrestrial network in accordance with the present disclosure. [Figure 7] FIG. 1 illustrates an example associated with UE timing mismatch reporting in a non-terrestrial network in accordance with the present disclosure. [Figure 8] FIG. 1 illustrates an example process associated with UE timing mismatch reporting in a non-terrestrial network, in accordance with the present disclosure. [Figure 9] FIG. 1 illustrates an example process associated with UE timing mismatch reporting in a non-terrestrial network, in accordance with the present disclosure. [Figure 10] FIG. 1 is a block diagram of an exemplary apparatus for wireless communication according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0019] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific 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 the disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure encompasses any aspect of the present disclosure disclosed herein, whether implemented independently or in combination with any other aspect of the present disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects described herein. In addition, the scope of the present disclosure is intended to encompass such apparatuses or methods practiced using other structures, functions, or structures and functions in addition to or other than the various aspects of the present disclosure described herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

[0020] Several aspects of telecommunications systems will now be presented with reference to various apparatus and techniques. These apparatus and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0021] It should be noted that although aspects may be described herein using terminology commonly associated with 5G or NR radio access technologies (RATs), aspects of the present disclosure may apply to other RATs, such as 3G RATs, 4G RATs, and / or post-5G (e.g., 6G) RATs.

[0022] FIG. 1 illustrates an example wireless network 100 according to the present disclosure. Wireless network 100 may be or include elements of a 5G (NR) network and / or an LTE network, among other examples. Wireless network 100 may include several base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, transmit reception point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to the coverage area of ​​a BS and / or the BS subsystem serving this coverage area, depending on the context in which the term is used.

[0023] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a few kilometers in radius) and may allow unrestricted access by UEs with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs that have an association with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example shown in FIG. 1, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or multiple (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0024] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move according to the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0025] Wireless network 100 may also include relay stations. A relay station is an entity that can receive a data transmission from an upstream station (e.g., a BS or a UE) and send the data transmission to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in FIG. 1, relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, a relay base station, a relay, etc.

[0026] Wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different susceptibility to interference in wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5-40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1-2 watts).

[0027] A network controller 130 may couple to a set of BSs and provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly via wireless or wireline backhaul.

[0028] The UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate over a wireless or wired medium.

[0029] Some UEs may be considered machine type communication (MTC) UEs or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and eMTC UEs include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and / or a location tag that may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). The UE 120 may be included within a housing that houses components of the UE 120, such as a processor component and / or a memory component. In some aspects, the processor component and the memory component may be coupled to each other. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0030] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular RAT and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0031] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using a base station 110 as an intermediary for communicating with each other) using one or more sidelink channels. For example, the UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-everything (V2X) protocol (which may include, e.g., a vehicle-to-vehicle (V2V) protocol or a vehicle-to-infrastructure (V2I) protocol), and / or a mesh network. In this case, the UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0032] The devices of wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various classes, bands, channels, etc. based on frequency or wavelength. For example, the devices of wireless network 100 may communicate using an operating band having a first frequency range (FR1) that may range from 410 MHz to 7.125 GHz and / or an operating band having a second frequency range (FR2) that may range from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the “sub-6 GHz” band. Similarly, FR2 is often referred to as the “millimeter wave” band, even though it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) identified as the “millimeter wave” band by the International Telecommunications Union (ITU). Thus, unless otherwise specified, it should be understood that terms such as "sub-6 GHz," as used herein, can broadly refer to frequencies below 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specified, it should be understood that terms such as "millimeter wave," as used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). The frequencies included in FR1 and FR2 may be modified, and it is contemplated that the techniques described herein are applicable to those modified frequency ranges.

[0033] In some aspects, wireless network 100 may include one or more non-terrestrial network (NTN) deployments, where non-terrestrial wireless communication devices may include BSs 110f (interchangeably referred to herein as “non-terrestrial BSs,” “non-terrestrial base stations,” “satellite base stations,” or “satellites”), relay stations (interchangeably referred to herein as “non-terrestrial relay stations” or “satellite relay stations”), etc. As used herein, “NTN” may refer to a network where access is facilitated by non-terrestrial BSs 110f, non-terrestrial relay stations, etc. A satellite may provide a non-terrestrial cell, which may at least partially overlap with one or more cells provided by a ground-based BS, may subsume one or more cells provided by a ground-based BS, etc. In some aspects, a satellite may be associated with a non-terrestrial BS (e.g., a BS may be onboard a satellite). In some aspects, a satellite may be associated with a terrestrial BS or a ground-based BS.

[0034] Wireless network 100 may include any number of non-terrestrial wireless communication devices. The non-terrestrial wireless communication devices may include satellites, high altitude platforms (HAPs), etc. HAPs may include balloons, airships, airplanes, unmanned aerial vehicles, etc. The non-terrestrial wireless communication devices may be part of a NTN that is separate from wireless network 100. Alternatively, the NTN may be part of wireless network 100. The satellites may communicate directly and / or indirectly with other entities in wireless network 100 using satellite communications. The other entities may include UEs, other satellites in one or more NTN deployments, other types of BSs (e.g., fixed BSs or ground-based BSs), relay stations, one or more components and / or devices included in a core network of wireless network 100, etc.

[0035] As noted above, Figure 1 is provided as an example. Other examples may differ from those described with respect to Figure 1.

[0036] 2 is a diagram illustrating an example base station 110 200 in communication with a UE 120 in wireless network 100 in accordance with the present disclosure. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

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

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

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

[0040] Antennas (e.g., antennas 234a-234t and / or antennas 252a-252r) may include or be contained within one or more antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays, among other examples. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include one or more antenna elements. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include a set of coplanar antenna elements and / or a set of non-coplanar antenna elements. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include antenna elements within a single housing and / or antenna elements within multiple housings. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include one or more antenna elements coupled to one or more transmitting and / or receiving components, such as one or more components of FIG. 2.

[0041] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a-254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in the modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to FIGS. 6-9).

[0042] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by a demodulator 232, detected by a MIMO detector 236, if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of the base station 110 may be included in a modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as described with reference to FIGS. 6-9).

[0043] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other components of FIG. 2 may perform one or more techniques associated with UE timing mismatch reporting in non-terrestrial networks, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other components of FIG. 2 may perform or direct the operation of, for example, process 800 of FIG. 8, process 900 of FIG. 9, and / or other processes as described herein. The memories 242 and 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium that stores one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., immediately or after being compiled, converted, and / or interpreted) by one or more processors of the base station 110 and / or the UE 120, may cause the one or more processors, the UE 120, and / or the base station 110 to perform or direct operations of, for example, process 800 of FIG. 8, process 900 of FIG. 9, and / or other processes described herein. In some aspects, executing the instructions may include, among other examples, invoking the instructions, converting the instructions, compiling the instructions, and / or interpreting the instructions.

[0044] In some aspects, the UE 120 may include means for determining timing misalignment information about a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, means for transmitting the timing misalignment information to a satellite 110f associated with the non-terrestrial cell, etc. In some aspects, such means may include one or more components of the UE 120 described with respect to FIG. 2, such as the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antennas 252, the DEMOD 254, the MIMO detector 256, the receive processor 258, etc.

[0045] 2 are shown as separate components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, functionality described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.

[0046] As noted above, Figure 2 is provided as an example. Other examples may differ from those described with respect to Figure 2.

[0047] FIG. 3 illustrates an example frame structure 300 for a wireless communication network in accordance with the present disclosure. The frame structure illustrated in FIG. 3 is for frequency division duplexing (FDD) in a telecommunications system such as LTE or NR. A transmission timeline for each of the downlink and uplink may be partitioned into units of radio frames (sometimes referred to as frames). Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be partitioned into a set of Z subframes (e.g., with indices from 0 to Z−1), where Z≧1. Each subframe may have a predetermined duration (e.g., 1 ms) and may include a set of slots (e.g., 2 m slots per subframe are illustrated in FIG. 3 , where m is an index of the numerology used for transmission, such as 0, 1, 2, 3, 4, etc.). Each slot may include a set of L symbol periods. For example, each slot may include 14 symbol periods, 7 symbol periods, or another number of symbol periods (e.g., as shown in FIG. 3 ). If a subframe includes two slots (e.g., when m=1), the subframe may include 2L symbol periods, where the 2L symbol periods in each subframe may be assigned indices from 0 to 2L-1. In some aspects, the scheduling unit for FDD may be frame-based, subframe-based, slot-based, minislot-based, symbol-based, etc.

[0048] As noted above, Figure 3 is provided as an example. Other examples may differ from those described with respect to Figure 3.

[0049] FIG. 4 illustrates an example regenerative satellite deployment 400 and an example transparent satellite deployment 410 in a non-terrestrial network according to the present disclosure.

[0050] Example 400 illustrates a regenerative satellite deployment. In example 400, UE 120 is served by satellite 420 via service link 430. For example, satellite 420 may include satellite 110f. In some aspects, satellite 420 may be referred to as a non-terrestrial base station, a regenerative repeater, an on-board processing repeater, etc. In some aspects, satellite 420 may demodulate an uplink radio frequency signal and modulate a baseband signal derived from the uplink radio signal to generate a downlink radio frequency transmission. Satellite 420 may transmit the downlink radio frequency signal over service link 430. Satellite 420 may provide a cell covering UE 120.

[0051] Example 410 illustrates a transparent satellite deployment, sometimes referred to as a bent-pipe satellite deployment. In example 410, UE 120 is served by satellite 440 via service link 430. Satellite 440 may be a transparent satellite. Satellite 440 may relay signals received from gateway 450 (e.g., ground-based BS 110) via feeder link 460. For example, the satellite may receive uplink radio frequency transmissions and transmit downlink radio frequency transmissions without demodulating the uplink radio frequency transmissions. In some aspects, the satellite may frequency convert uplink radio frequency transmissions received on service link 430 to the frequency of the uplink radio frequency transmissions on feeder link 460 and may amplify and / or filter the uplink radio frequency transmissions. In some aspects, UE 120 illustrated in examples 400 and 410 may be associated with global navigation satellite system (GNSS) capability, global positioning system (GPS) capability, etc., although not all UEs have such capabilities. Satellite 440 may provide a cell that covers UE 120 .

[0052] The service link 430 may include a link between the satellite 440 and the UE 120 and may include one or more of an uplink or a downlink. The feeder link 460 may include a link between the satellite 440 and the gateway 450 and may include one or more of an uplink (e.g., from the UE 120 to the gateway 450) or a downlink (e.g., from the gateway 450 to the UE 120). The uplink of the service link 430 may be denoted by reference numeral 430-U, and the downlink of the service link 430 may be denoted by reference numeral 430-D. Similarly, the uplink of the feeder link 460 may be denoted by reference numeral 460-U (not shown in FIG. 4), and the downlink of the feeder link 460 may be denoted by reference numeral 460-D (not shown in FIG. 4).

[0053] The feeder link 460 and the service link 430 may each experience Doppler effects due to the movement of the satellites 420 and 440 and potentially the movement of the UE 120. These Doppler effects may be significantly greater than in terrestrial networks. The Doppler effects on the feeder link 460 may be compensated for to some extent, but may still be associated with some amount of uncompensated frequency error. Furthermore, the gateway 450 may be associated with a residual frequency error and / or the satellites 420 / 440 may be associated with an onboard frequency error. These sources of frequency error may cause the received downlink frequency at the UE 120 to drift from the target downlink frequency.

[0054] As noted above, Figure 4 is provided as an example. Other examples may differ from those described with respect to Figure 4.

[0055] 5 illustrates an example 500 of timing alignment in a non-terrestrial network in accordance with the present disclosure. As shown in FIG. 5, a satellite 110 may be time-aligned with one or more UEs 120 (e.g., UE 120-1, UE 120-2, etc.) served in the non-terrestrial cell of the satellite 110.

[0056] 5, satellite 110 may be associated with an uplink timeline 512 that includes multiple time-domain resources (e.g., slots or subframes 0-16) for uplink communications in a non-terrestrial cell, and may be associated with a downlink timeline 514 that includes multiple time-domain resources (e.g., slots or subframes 0-16) for downlink communications in a non-terrestrial cell. From the perspective of satellite 110, uplink timeline 512 and downlink timeline 514 may be timing-aligned (e.g., slot or subframe 0 of uplink timeline 512 is timing-aligned with slot or subframe 0 of downlink timeline 514, etc.).

[0057] Due to the distance between UE 120-1 and satellite BS 110 and the distance between UE 120-2 and satellite 110, there is a propagation delay for communication between UE 120-1 and satellite 110 and for communication between UE 120-2 and satellite 110. As a result, from the perspective of UE 120-1, uplink timeline 522 and downlink timeline 524 for UE 120-1 are misaligned. UE 120-1 may determine a timing misalignment 526 between uplink timeline 522 and downlink timeline 524. Timing misalignment 526 may include an offset of N slots or subframes (or another amount of time-domain resources, or another duration, etc.) between slot or subframe 0 of uplink timeline 522 and slot or subframe 0 of downlink timeline 524. In particular, uplink timeline 522 may be shifted or adjusted earlier in time by N slots or subframes so that UE 120-1 begins uplink transmission 528 earlier to compensate for propagation delay between UE 120-1 and satellite 110. If UE 120-1 is a half-duplex UE (or another type of UE incapable of performing simultaneous transmission and reception), the slot or subframe used for uplink transmission 528 may be unavailable for downlink reception for UE 120-1. Furthermore, slots, subframes, or other time-domain resources on either side of the slot or subframe used for uplink transmission 528 may not be available to provide a guard period for UE 120-1 to transition between transmission and reception.

[0058] 5, UE 120-2 may be located closer to satellite 110 than UE 120-1. Therefore, the adjustment between uplink timeline 532 and downlink timeline 534 for UE 120-2 may be relatively smaller than the adjustment for UE 120-1 due to the smaller propagation delay. In these cases, UE 120-2 may determine a timing misalignment 536 to compensate for the propagation delay to include N-D slots or subframes, where D is based at least in part on the distance between UE 120-2 and satellite 110. In particular, uplink timeline 532 may be shifted or adjusted earlier in time by N minus D (N-D) slots or subframes such that UE 120-2 begins uplink transmission 538 earlier to compensate for the propagation delay between UE 120-2 and satellite 110. In some cases, for a particular value of D (e.g., for D=5), the same uplink subframe / slot index (N) may result in different unusable downlink subframe / slot indexes at UEs 120-1 and 120-2.

[0059] As noted above, Figure 5 is provided as an example. Other examples may differ from those described with respect to Figure 5.

[0060] As described above, a UE in a non-terrestrial network may determine a timing mismatch between an uplink timeline and a downlink timeline for a UE associated with a satellite. However, the satellite may be unaware of the timing mismatch (e.g., because at least some component of this mismatch was estimated by the UE based on, for example, its geolocation information, or satellite ephemeris information, or any combination thereof), which may cause the satellite to schedule overlapping uplink and downlink communications with the UE. These overlapping communications may be referred to as collisions (e.g., collisions between an uplink transmission for the UE and a downlink reception for the UE) if the UE cannot (or is unable to) handle simultaneous transmissions (e.g., if the UE is a half-duplex UE). These collisions may cause one or more downlink communications to be dropped or not be received at the UE, may cause delays in uplink communications being sent to the satellite, may increase retransmissions between the UE and the satellite, etc.

[0061] Some aspects described herein provide techniques and apparatus for UE timing mismatch reporting in non-terrestrial networks. In some aspects, a UE (e.g., UE 120) may determine timing mismatch information about a timing mismatch between an uplink timeline and a downlink timeline for a non-terrestrial cell associated with a satellite (e.g., satellite 110, satellite 420, etc.). The UE may transmit the timing mismatch information to the satellite, which enables the satellite to schedule and / or configure communications between the UE and the satellite accordingly. In this manner, the satellite may schedule and / or configure communications between the UE and the satellite in a manner that reduces and / or prevents collisions between uplink transmissions and downlink receptions for the UE. This may reduce the amount of downlink communications that are dropped or cannot be received at the UE, may reduce delays in uplink communications being sent to the satellite, may reduce retransmissions between the UE and the satellite, etc. The techniques and apparatus described herein may be used in NB-IoT communications, enhanced mobile broadband (eMBB) communications, and / or other types of communications.

[0062] 6 is a diagram illustrating an example 600 associated with UE timing mismatch reporting in a non-terrestrial network in accordance with the present disclosure. As shown in FIG. 6, example 600 may include communication between UE 120 and a satellite 110 (e.g., satellite 420). In some aspects, UE 120 and satellite 110 may be included in a wireless network, such as wireless network 100. In some aspects, UE 120 and satellite 110 may communicate over a wireless access link or service link 430, which may include an uplink 430-U and a downlink 430-D.

[0063] In some aspects, UE 120 may be served by a non-terrestrial cell associated with and / or provided by satellite 110. In some aspects, UE 120 and BS 110 may communicate based at least in part on an uplink timeline (e.g., uplink timeline 512, uplink timeline 522, uplink timeline 532, etc.) and a downlink timeline (e.g., downlink timeline 514, downlink timeline 524, downlink timeline 534, etc.).

[0064] 6, the UE 120 may determine (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determining component 1008 of FIG. 10 (described below), etc.) timing mismatch information about a timing mismatch between an uplink timeline and a downlink timeline for a non-terrestrial cell (e.g., timing mismatch 526, timing mismatch 536, etc.). In some aspects, the UE 120 may determine the timing mismatch information based at least in part on a geolocation of the UE 120. The UE 120 may determine the geolocation based at least in part on triangulation techniques, based at least in part on GPS or GNSS satellite positioning information, etc.

[0065] The timing misalignment information may include various types of information associated with the timing misalignment. For example, the timing misalignment information may include an indication of the geolocation of the UE 120. As another example, the timing misalignment information may include an indication of the timing misalignment. As described above, the timing misalignment determined by the UE 120 may be a relatively large timing misalignment that is larger than the timing advance that may be detected and communicated to the UE 120 by the satellite 110 as part of the random access procedure.

[0066] The timing misalignment may be indicated as an offset between an uplink timeline and a downlink timeline for a non-terrestrial cell associated with satellite 110. In some aspects, UE 120 may explicitly indicate the actual estimated or determined magnitude of the offset. For example, UE 120 may explicitly indicate the estimated or determined magnitude of the offset as an amount of time (e.g., in milliseconds, seconds, etc.) between the uplink timeline and the downlink timeline, as an amount of one or more types of time domain resources between the uplink timeline and the downlink timeline (e.g., an amount of slots, an amount of subframes, an amount of radio frames, etc.) between the uplink timeline and the downlink timeline), etc.

[0067] In some aspects, the UE 120 may indicate a range that the offset falls within. For example, the UE 120 may indicate a duration range from multiple duration ranges (e.g., duration ranges incremented by a particular amount of time) in which the duration of the offset falls. As another example, the UE 120 may indicate a time-domain resource range from multiple time-domain resource ranges in which the amount of time-domain resources for the offset falls (e.g., a range of amounts of slots, a range of amounts of subframes, etc.).

[0068] 6 by reference numeral 604, the UE 120 may transmit the timing misalignment information to the satellite 110 (e.g., using the antennas 252, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the controller / processor 280, the memory 282, the transmit component 1004 of FIG. 10, etc.). The UE 120 may transmit the timing misalignment information in one or more types of uplink communication, such as an uplink control information (UCI) communication, a medium access control control element (MAC-CE) communication, a radio resource control (RRC) communication, or another type of uplink communication.

[0069] The UE 120 may transmit the timing alignment information at various times and based at least in part on various triggers or events. For example, the UE 120 may transmit the timing alignment information based at least in part on receiving an instruction from the satellite 110 to transmit the timing misalignment information (e.g., using the antenna 252, the DEMOD 254, the MIMO detector 256, the receive processor 258, the controller / processor 280, the memory 282, the receive component 1002 of FIG. 10, etc.). The instruction may be included in a downlink control information (DCI) communication, a MAC-CE communication, an RRC communication, a physical downlink control channel (PDCCH) communication, or another type of downlink communication.

[0070] As another example, UE 120 may transmit timing misalignment information on a periodic or semi-persistent uplink grant (e.g., received from satellite 110). In these cases, UE 120 may transmit timing misalignment information in uplink resources (e.g., slots, symbols, subframes, resource blocks, subcarriers, etc.) scheduled, allocated, and / or configured for UE 120 in the periodic or semi-persistent uplink grant.

[0071] As another example, UE 120 may transmit timing misalignment information based at least in part on detecting, determining, and / or identifying an event, which may include, for example, an event defined or identified in a wireless communication standard or specification, an event included in a table or another type of data structure, an event associated with an amount of change between a most recent timing misalignment and a previously determined timing misalignment (e.g., an event associated with a determination that the amount of change meets a threshold amount of change), and / or other types of events.

[0072] In some aspects, a conflict may occur at UE 120 between transmitting timing misalignment information to satellite 110 and receiving a downlink transmission from satellite 110. For example, a conflict may occur due to satellite 110 being unaware of a timing misalignment between an uplink timeline and a downlink timeline for UE 120, which may result in satellite 110 scheduling or configuring overlapping transmissions. UE 120 may identify the conflict based at least in part on determining (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, determination component 1008 of FIG. 10, etc.) an overlap between one or more time domain resources (e.g., symbols, slots, subframes, etc.) on which timing misalignment information is to be transmitted and one or more time domain resources on which downlink transmissions are to be received. In some aspects, UE 120 may identify a collision based at least in part on determining an overlap between one or more time domain resources on which timing misalignment information is to be transmitted and one or more guard periods or return time domain resources on either side of one or more time domain resources on which downlink transmissions are to be received. In some aspects, UE 120 may identify a collision based at least in part on determining an overlap between one or more time domain resources on which downlink transmissions are to be received and one or more guard periods or return time domain resources on either side of timing misalignment information to be transmitted.

[0073] In these cases, the UE 120 may determine (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determination component 1008, etc.) a priority (e.g., a transmission priority, a quality of service (QoS) priority, a physical channel priority, and / or another type of priority) associated with the downlink transmission and a priority associated with the uplink transmission for which the timing misalignment information is to be transmitted, and may determine to transmit the timing misalignment information based at least in part on the priority associated with the uplink transmission being higher than the priority associated with the downlink transmission.

[0074] In some aspects, UE 120 may continue to determine and transmit timing misalignment information to satellite 110 periodically and / or aperiodically (e.g., based at least in part on another event or trigger). For example, UE 120 may transmit updated timing misalignment information associated with an updated timing misalignment at a particular time interval, such as based at least in part on detecting a threshold amount of change between the timing misalignment and the updated timing misalignment.

[0075] In this manner, UE 120 may determine timing mismatch information about the timing mismatch between the uplink timeline and the downlink timeline for the non-terrestrial cell associated with satellite 110. UE 120 may transmit the timing mismatch information to satellite 110, which enables satellite 110 to schedule and / or configure communications between UE 120 and satellite 110 accordingly. In this manner, satellite 110 may schedule and / or configure communications between UE 120 and satellite 110 in a manner that reduces and / or prevents collisions between uplink transmissions and downlink receptions for UE 120. This may reduce the amount of downlink communications that are dropped or cannot be received at UE 120, may reduce delays in uplink communications being sent to satellite 110, may reduce retransmissions between UE 120 and satellite 110, etc.

[0076] As noted above, Figure 6 is provided as an example. Other examples may differ from those described with respect to Figure 6.

[0077] 7 illustrates an example 700 associated with UE timing mismatch reporting in a non-terrestrial network in accordance with the present disclosure. As shown in FIG. 7, example 700 may include communication between UE 120 and a satellite 110 (e.g., satellite 420). In some aspects, UE 120 and satellite 110 may be included in a wireless network, such as wireless network 100. In some aspects, UE 120 and satellite 110 may communicate over a wireless access link or service link 430, which may include an uplink 430-U and a downlink 430-D.

[0078] In some aspects, UE 120 may be served by a non-terrestrial cell associated with and / or provided by satellite 110. In some aspects, UE 120 and BS 110 may communicate based at least in part on an uplink timeline (e.g., uplink timeline 512, uplink timeline 522, uplink timeline 532, etc.) and a downlink timeline (e.g., downlink timeline 514, downlink timeline 524, downlink timeline 534, etc.).

[0079] 7 , the UE 120 may receive an instruction to transmit an uncompensated uplink signal to the satellite 110 (e.g., using the antennas 252, the DEMOD 254, the MIMO detector 256, the receive processor 258, the controller / processor 280, the memory 282, the receiving component 1002, etc.). In some aspects, the UE 120 may receive the instruction in a downlink communication from the satellite 110, such as a DCI communication, a MAC-CE communication, an RRC communication, a PDCCH communication, and / or another type of downlink communication. The uncompensated uplink signal may be an uplink signal that the UE 120 will transmit without adjustment based at least in part on a timing misalignment (e.g., determined by the UE 120) between an uplink timeline and a downlink timeline for a non-terrestrial cell associated with the satellite 110.

[0080] 7, the UE 120 may transmit an uncompensated uplink signal to the satellite 110 based at least in part on receiving the instruction (e.g., using the antennas 252, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the controller / processor 280, the memory 282, the transmit component 1004, etc.). In some aspects, the UE 120 may transmit the uncompensated uplink signal as part of a random access channel (RACH) procedure or an initial access procedure. For example, the UE 120 may transmit a RACH preamble transmission on a physical random access channel (PRACH) during a RACH procedure.

[0081] In this manner, satellite 110 may receive the uncompensated uplink signal, may measure the uncompensated uplink signal to determine a timing misalignment for UE 120, and may schedule communications with UE 120 based at least in part on the timing misalignment.

[0082] As noted above, Figure 7 is provided as an example. Other examples may differ from those described with respect to Figure 7.

[0083] 8 illustrates an example process 800, performed by, for example, a UE, in accordance with the present disclosure. The example process 800 is an example of a UE (e.g., UE 120) performing operations associated with UE timing mismatch reporting in a non-terrestrial network.

[0084] 8, in some aspects, process 800 may include determining timing mismatch information for a timing mismatch between an uplink timeline and a downlink timeline associated with a non-terrestrial cell (block 810). For example, the UE (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determining component 1008, etc.) may determine the timing mismatch information for the timing mismatch between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, as described above.

[0085] 8, in some aspects, process 800 may include transmitting the timing misalignment information to a satellite associated with the non-terrestrial cell (block 820). For example, the UE (e.g., using antenna 252, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, memory 282, transmitting component 1004, etc.) may transmit the timing misalignment information to a satellite associated with the non-terrestrial cell, as described above.

[0086] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or with respect to one or more other processes described elsewhere herein.

[0087] In a first aspect, the timing misalignment information includes at least one of an indication of a timing misalignment or an indication of a geolocation of the UE. In a second aspect, alone or in combination with the first aspect, the timing misalignment information includes an indication of a timing misalignment, and the indication of the timing misalignment information includes an indication of an offset between an uplink timeline and a downlink timeline. In a third aspect, alone or in combination with one or more of the first and second aspects, the offset is indicated as at least one of an amount of slots between the uplink timeline and the downlink timeline, an amount of subframes between the uplink timeline and the downlink timeline, an amount of radio frames between the uplink timeline and the downlink timeline, or an amount of time between the uplink timeline and the downlink timeline.

[0088] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the indication of the offset is provided from among a plurality of candidate offsets configured for the UE. In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the process 800 includes determining a measured offset (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determining component 1008, etc.) and selecting a candidate offset from a plurality of candidate offsets that is closest to the measured offset as the offset for the timing misalignment. In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the offset is indicated as a duration range from a plurality of duration ranges or as a time domain resource range from a plurality of time domain resource ranges.

[0089] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the process 800 includes identifying (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, etc.) a collision between transmitting an uplink transmission that includes timing misalignment information and receiving a downlink transmission, and determining (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determination component 1008, etc.) to transmit the timing misalignment information based at least in part on a priority associated with the uplink transmission being higher than a priority associated with the downlink transmission.

[0090] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, transmitting timing misalignment information includes transmitting the timing misalignment information in at least one of UCI communication, MAC-CE communication, or RRC communication (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.). In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the process 800 includes determining updated timing mismatch information for an updated timing mismatch between an uplink timeline and a downlink timeline associated with a satellite (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determining component 1008, etc.), and transmitting the updated timing mismatch information to the satellite (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.).

[0091] In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, transmitting the timing misalignment information includes transmitting the timing misalignment information based at least in part on receiving an indication to transmit the timing misalignment information in at least one of a DCI communication, a MAC-CE communication, or an RRC communication (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antennas 252, the memory 282, the transmitting component 1004, etc.). In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, transmitting the timing misalignment information includes transmitting the timing misalignment information on a periodic or semi-persistent uplink grant (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antennas 252, the memory 282, the transmitting component 1004, etc.).

[0092] In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, transmitting the timing mismatch information includes transmitting the timing mismatch information based at least in part on an event (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.), wherein the event includes at least one of a specified event or an amount of change between the timing mismatch information meeting a threshold and the previous timing mismatch information. In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the UE and the satellite communicate using NB-IoT communication and / or eMBB communication.

[0093] 8 illustrates example blocks of process 800, in some aspects process 800 may include additional, fewer, different, or differently arranged blocks compared to the blocks illustrated in FIG 8. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0094] 9 illustrates an example process 900, performed by, for example, a UE, in accordance with the present disclosure. The example process 900 is an example of a UE (e.g., UE 120) performing operations associated with UE timing mismatch reporting in a non-terrestrial network.

[0095] 9, in some aspects, process 900 may include receiving an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell (block 910). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, receiving component 1002, etc.) may receive an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell, as described above.

[0096] 9 , in some aspects, process 900 may include transmitting (block 920) an uncompensated uplink signal to the satellite based at least in part on receiving the instruction, where the uncompensated uplink signal is not adjusted based at least in part on a timing mismatch between an uplink timeline and a downlink timeline associated with the non-terrestrial cell. For example, the UE (e.g., using transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, controller / processor 280, memory 282, transmit component 1004, etc.) may transmit an uncompensated uplink signal to the satellite based at least in part on receiving the instruction, as described above. In some aspects, the uncompensated uplink signal is not adjusted based at least in part on a timing mismatch between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0097] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or with respect to one or more other processes described elsewhere herein.

[0098] In a first aspect, receiving the indication includes receiving the indication in a PDCCH communication (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, receiving component 1002, etc.). In a second aspect, alone or in combination with the first aspect, transmitting an uncompensated uplink signal includes transmitting an uncompensated uplink signal as part of a random access channel (RACH) procedure (e.g., using controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, memory 282, transmitting component 1004, etc.). In a third aspect, alone or in combination with one or more of the first and second aspects, the uncompensated uplink signal includes a random access channel preamble transmission on a PRACH. In a fourth aspect, alone or in combination with one or more of the first through third aspects, the UE and the satellite communicate using NB-IoT communication and / or eMBB communication.

[0099] 9 illustrates example blocks of process 900, in some aspects process 900 may include additional, fewer, different, or differently arranged blocks compared to the blocks illustrated in FIG 9. Additionally or alternatively, two or more of the blocks of process 900 may be performed in parallel.

[0100] 10 is a block diagram of an example apparatus 1000 for wireless communication. The apparatus 1000 may be a UE (e.g., UE 120), or the UE may include the apparatus 1000. In some aspects, the apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1000 may communicate with another apparatus 1006 (such as the UE 120, a base station 110, a satellite 110, a satellite 420, or another wireless communication device) using the receiving component 1002 and the transmitting component 1004. As further shown, the apparatus 1000 may include a determining component 1008.

[0101] In some aspects, apparatus 1000 may be configured to perform one or more operations described herein with respect to FIG. 6 and / or FIG. 7. Additionally or alternatively, apparatus 1000 may be configured to perform one or more processes described herein, such as process 800 of FIG. 8, process 900 of FIG. 9, or a combination thereof. In some aspects, apparatus 1000 and / or one or more components shown in FIG. 10 may include one or more components of a UE described above with respect to FIG. 2. Additionally or alternatively, one or more components shown in FIG. 10 may be implemented within one or more components described above with respect to FIG. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored on a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0102] The receiving component 1002 may receive communications such as reference signals, control information, data communications, or a combination thereof from the device 1006. The receiving component 1002 may provide the received communications to one or more other components of the device 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the device 1006. In some aspects, the receiving component 1002 may include one or more antennas 252, a DEMOD 254, a MIMO detector 256, a receive processor 258, a controller / processor 280, a memory 282, or a combination thereof of the UE 120 described above with respect to FIG.

[0103] The transmitting component 1004 may transmit a communication to the device 1006, such as a reference signal, control information, a data communication, or a combination thereof. In some aspects, one or more other components of the device 1006 may generate a communication and provide the generated communication to the transmitting component 1004 for transmission to the device 1006. In some aspects, the transmitting component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communication and may transmit the processed signal to the device 1006. In some aspects, the transmitting component 1004 may include one or more antennas 252, a MOD 254, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, a memory 282, or a combination thereof, of the UE 120 described above with respect to FIG. 2. In some aspects, the transmitting component 1004 may be co-located with the receiving component 1002 in a transceiver.

[0104] In some aspects, the determining component 1008 determines timing misalignment information for a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell. In some aspects, the transmitting component 1004 may transmit the timing misalignment information to the device 1006 associated with the non-terrestrial cell. In some aspects, the receiving component 1002 may receive an instruction to transmit an uncompensated uplink signal to the device 1006 associated with the non-terrestrial cell. In some aspects, the transmitting component 1004 may transmit the uncompensated uplink signal to the device 1006 based at least in part on receiving the instruction.

[0105] The determining component 1008 may include a memory. In some aspects, the determining component 1008 may include the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, or a combination thereof, of the UE 120 described above with respect to FIG. 2. The determining component 1008 may include one or more instructions that, when executed by one or more processors of the UE, cause the UE to determine timing mismatch information for a timing mismatch between an uplink timeline and a downlink timeline associated with a non-terrestrial cell. The determining component 1008 may include means for determining the timing mismatch information for a timing mismatch between an uplink timeline and a downlink timeline associated with a non-terrestrial cell.

[0106] The number and arrangement of components shown in Figure 10 are provided as an example. In practice, there may be additional, fewer, different, or differently arranged components compared to those shown in Figure 10. Furthermore, two or more components shown in Figure 10 may be implemented within a single component, or a single component shown in Figure 10 may be implemented as multiple distributed components. Additionally or alternatively, a set of components shown in Figure 10 may perform one or more functions described as being performed by another set of components shown in Figure 10.

[0107] The following provides a summary of some aspects of the disclosure.

[0108] Aspect 1: A method of wireless communication performed by a user equipment (UE), the method including: determining timing misalignment information regarding a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell; and transmitting the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0109] Aspect 2: The method of aspect 1, wherein the timing misalignment information includes at least one of an indication of a timing misalignment or an indication of a geolocation of the UE. Aspect 3: The method of aspect 1 or 2, wherein the timing misalignment information includes an indication of a timing misalignment, and wherein the indication of the timing misalignment information includes an indication of an offset between an uplink timeline and a downlink timeline.

[0110] Aspect 4: The method of aspect 3, wherein the offset is indicated as at least one of an amount of slots between an uplink timeline and a downlink timeline, an amount of subframes between an uplink timeline and a downlink timeline, an amount of radio frames between an uplink timeline and a downlink timeline, or an amount of time between an uplink timeline and a downlink timeline. Aspect 5: The method of aspect 3 or 4, wherein the indication of the offset is provided from among a plurality of candidate offsets configured for the UE.

[0111] Aspect 6: The method of aspect 5, further comprising determining a measured offset and selecting a candidate offset from among a plurality of candidate offsets that is closest to the measured offset as the offset for timing mismatch.

[0112] Aspect 7: The method of any of Aspects 3-6, wherein the offset is indicated as a duration range from a plurality of duration ranges or as a time domain resource range from a plurality of time domain resource ranges. Aspect 8: The method of any of Aspects 1-7, further including: identifying a collision between transmission of an uplink transmission including the timing misalignment information and reception of a downlink transmission; and determining to transmit the timing misalignment information based at least in part on a priority associated with the uplink transmission being higher than a priority associated with the downlink transmission.

[0113]

[0016] Aspect 9: The method of any of Aspects 1-8, wherein transmitting the timing misalignment information includes transmitting the timing misalignment information in at least one of an uplink control information (UCI) communication, a medium access control control element (MAC-CE) communication, or a radio resource control (RRC) communication. Aspect 10: The method of any of Aspects 1-9, further including determining updated timing misalignment information for an updated timing misalignment between an uplink timeline and a downlink timeline associated with the satellite, and transmitting the updated timing misalignment information to the satellite.

[0114]

[0023] Aspect 11: The method of any of Aspects 1-10, wherein transmitting the timing misalignment information includes transmitting the timing misalignment information based at least in part on receiving an indication to transmit the timing misalignment information in at least one of a downlink control information (DCI) communication, a medium access control control element (MAC-CE) communication, or a radio resource control (RRC) communication. Aspect 12: The method of any of Aspects 1-11, wherein transmitting the timing misalignment information includes transmitting the timing misalignment information on a periodic or semi-persistent uplink grant.

[0115] Aspect 13: The method of any of aspects 1 to 12, wherein the step of transmitting the timing mismatch information includes a step of transmitting the timing mismatch information based at least in part on an event, the event including at least one of a specified event or an amount of change between the timing mismatch information satisfying a threshold and the previous timing mismatch information.

[0116] Aspect 14: A method of wireless communications performed by a user equipment (UE), comprising: receiving an instruction to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and transmitting the uncompensated uplink signal to the satellite based at least in part on receiving the instruction, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing mismatch between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0117]

[0030] Aspect 15: The method of aspect 14, wherein receiving the indication comprises receiving the indication in a physical downlink control channel (PDCCH) communication.

[0031] Aspect 16: The method of aspect 14 or 15, wherein transmitting the uncompensated uplink signal comprises transmitting the uncompensated uplink signal as part of a random access channel (RACH) procedure.

[0118]

[0023] Aspect 17: The method of aspect 16, wherein the uncompensated uplink signal includes a RACH preamble transmission on a physical random access channel (PRACH).

[0024] Aspect 18: The method of any of aspects 14-18, wherein the UE and the satellite communicate using narrowband Internet of Things (NB-IoT) communication and / or enhanced mobile broadband (eMBB) communication.

[0119] Aspect 19: An apparatus for wireless communication in a device, the apparatus 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 one or more methods of aspects 1 to 13. Aspect 20: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform one or more methods of aspects 1 to 13. Aspect 21: An apparatus for wireless communication, the apparatus comprising at least one means for performing one or more methods of aspects 1 to 13.

[0120] Aspect 22: A non-transitory computer-readable medium storing code for wireless communications, the code including instructions executable by a processor to perform one or more of the methods of aspects 1 through 13. Aspect 23: A non-transitory computer-readable medium storing a set of instructions for wireless communications, the set of instructions including one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods of aspects 1 through 13.

[0121] Aspect 24: An apparatus for wireless communication in a device, the apparatus 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 one or more methods of aspects 14 to 18. Aspect 25: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform one or more methods of aspects 14 to 18. Aspect 26: An apparatus for wireless communication, the apparatus comprising at least one means for performing one or more methods of aspects 14 to 18.

[0122] Aspect 27: A non-transitory computer-readable medium storing code for wireless communications, the code including instructions executable by a processor to perform one or more of the methods of aspects 14 to 18. Aspect 28: A non-transitory computer-readable medium storing a set of instructions for wireless communications, the set of instructions including one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods of aspects 14 to 18.

[0123] The above disclosure provides illustration and description, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the embodiments.

[0124] The term "component" as used herein shall be broadly construed as hardware and / or combinations of hardware and software. "Software" shall be broadly construed to mean, among other examples, instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. A processor, as used herein, is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein may be implemented in different forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code. It should be understood that software and hardware may be designed to implement the systems and / or methods based at least in part on the description herein.

[0125] As used herein, "meeting a threshold" can refer to a value being 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., depending on the context.

[0126] Although particular combinations of features are recited in the claims and / or disclosed herein, these combinations do not limit the disclosure of various aspects. Indeed, many of these features may be combined in ways not specifically recited in the claims and / or disclosed herein. While each dependent claim described below may depend directly on only one claim, the disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an 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 having multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0127] No element, act, or instruction used herein should be construed as critical or required unless explicitly described as such. Also, as used herein, the articles "a" and "an" are intended to include one or more items and may be used interchangeably with "one or more." Furthermore, as used herein, the article "the" is intended to include one or more items referred to with the article "the" and may be used interchangeably 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 may be used interchangeably with "one or more." Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, terms such as "has," "have," and "having" are intended to be open-ended terms. Furthermore, the phrase "based on" is intended to mean "based at least in part on," unless expressly specified otherwise. Also, as used herein, the term "or" is intended to be inclusive when used consecutively and may be used interchangeably with "and / or" unless otherwise specified (e.g., when used in combination with "either" or "only one of"). [Explanation of symbols]

[0128] 100 Wireless Networks 102a Macrocell 102b Picocell 102c Femtocell 110 Base Station, Satellite, Ground-Based BS, Satellite BS 110a BS, Macro BS 110b BS 110c BS 110d BS, relay BS 110f BS, non-terrestrial BS, satellite 120 UE 120-1 UE 120-2 UE 120a UE 120b UE 120c UE 120d UE 120e UE 130 Network Controller 200 examples 212 Data Sources 220 Transmit Processor 230 Transmit (TX) Multiple Input Multiple Output (MIMO) Processor, TX MIMO Processor 232 Modulator, Demodulator, MOD / DEMOD, MOD 234 Antenna 236 MIMO detector 238 Receive Processor 239 Data Sink 240 Controllers / Processors 242 memory 244 communication unit 246 Scheduler 252 Antenna 254 Demodulator, Modulator, MOD / DEMOD, MOD, DEMOD 256 MIMO detector 258 Receive Processor 260 Data Sink 262 Data Sources 264 Transmit Processor 266 TX MIMO Processor 280 Controller / Processor 282 memory 284 Housing 290 Controller / Processor 292 memory 294 Communication Unit 300 examples 400 examples 410 examples 430 Service Link 430-D Downlink 430-U Uplink 440 satellite 450 Gateway 460 Feeder Link 460-D Downlink 460-U Uplink 500 examples 512 Uplink Timeline 514 Downlink Timeline 522 Uplink Timeline 524 Downlink Timeline 526 Timing Mismatch 528 Uplink Transmission 532 Uplink Timeline 534 Downlink Timeline 536 Timing Mismatch 538 Uplink Transmission 600 examples 700 examples 800 processes 900 processes 1000 devices 1002 Receiving Component 1004 Transmission Components 1006 Equipment 1008 Decision Component

Claims

1. A user equipment (UE), A transceiver; at least one memory containing instructions; The UE, determining timing misalignment information about a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell; transmitting the timing misalignment information via a Medium Access Control (MAC) Control Element (MAC-CE) to a satellite associated with the non-terrestrial cell; and one or more processors configured to execute the instructions to cause the transmission of the timing mismatch information to occur, wherein the transmission of the timing mismatch information is based on an event that an amount of change between the timing mismatch information and a previous timing mismatch information satisfies a threshold. UE.

2. The timing mismatch information is an indication of said timing mismatch; or an indication of the geolocation of the UE; The UE of claim 1 , comprising at least one of:

3. the timing mismatch information includes an indication of the timing mismatch; the indication of the timing misalignment information includes an indication of an offset between the uplink timeline and the downlink timeline. The UE of claim 1.

4. The offset is the amount of slots between the uplink timeline and the downlink timeline; the amount of subframes between the uplink timeline and the downlink timeline; the amount of radio frames between the uplink timeline and the downlink timeline; or The amount of time between the uplink timeline and the downlink timeline The UE of claim 3, wherein the UE is indicated as at least one of:

5. The UE of claim 3 , wherein the indication of the offset is provided from among a plurality of candidate offsets configured for the UE.

6. The one or more processors may determining a measured offset; selecting a candidate offset from the plurality of candidate offsets that is closest to the measured offset as the offset for the timing mismatch; The UE of claim 5 , further configured to:

7. 4. The UE of claim 3, wherein the offset is indicated as a duration range from a plurality of duration ranges or as a time domain resource range from a plurality of time domain resource ranges.

8. The one or more processors may identifying a collision between a transmission of an uplink transmission including the timing misalignment information and a reception of a downlink transmission; determining to transmit the timing misalignment information based at least on a priority associated with the uplink transmission being higher than a priority associated with the downlink transmission; The UE of claim 1 , further configured to:

9. The one or more processors may determining updated timing misalignment information for an updated timing misalignment between the uplink timeline and the downlink timeline associated with the satellite; transmitting the updated timing misalignment information to the satellite; The UE of claim 1 , further configured to:

10. wherein the one or more processors, in order to transmit the timing misalignment information, Transmitting said timing misalignment information on periodic or semi-persistent uplink grants. The UE of claim 1 configured to:

11. The UE of claim 1, wherein the events further include specified events.

12. 1. A method of wireless communication performed by a user equipment (UE), comprising: determining timing misalignment information for a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell; transmitting the timing misalignment information via a Medium Access Control (MAC) Control Element (MAC-CE) to a satellite associated with the non-terrestrial cell; Including, the timing mismatch information is transmitted based on an event that a change amount between the timing mismatch information and a previous timing mismatch information satisfies a threshold. method.

13. The timing mismatch information is an indication of said timing mismatch; or an indication of the geolocation of the UE; 13. The method of claim 12, comprising at least one of:

14. the timing mismatch information includes an indication of the timing mismatch; the indication of the timing misalignment information includes an indication of an offset between the uplink timeline and the downlink timeline. The method of claim 12.

15. The offset is the amount of slots between the uplink timeline and the downlink timeline; the amount of subframes between the uplink timeline and the downlink timeline; the amount of radio frames between the uplink timeline and the downlink timeline; or The amount of time between the uplink timeline and the downlink timeline The method of claim 14, wherein the method is represented as at least one of:

16. 15. The method of claim 14, wherein the indication of the offset is provided from among a plurality of candidate offsets configured for the UE.

17. determining a measured offset; selecting a candidate offset from the plurality of candidate offsets that is closest to the measured offset as the offset for the timing mismatch; 17. The method of claim 16, further comprising:

18. The method of claim 14 , wherein the offset is indicated as a duration range from a plurality of duration ranges or as a time domain resource range from a plurality of time domain resource ranges.

19. identifying a collision between a transmission of an uplink transmission including the timing misalignment information and a reception of a downlink transmission; determining to transmit the timing misalignment information based at least on a priority associated with the uplink transmission being higher than a priority associated with the downlink transmission; 13. The method of claim 12, further comprising:

20. determining updated timing misalignment information for an updated timing misalignment between the uplink timeline and the downlink timeline associated with the satellite; transmitting the updated timing misalignment information to the satellite; 13. The method of claim 12, further comprising:

21. transmitting the timing mismatch information, transmitting said timing misalignment information on periodic or semi-persistent uplink grants.

13. The method of claim 12, comprising:

22. The method of claim 12, wherein the events further include specified events.

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