Two-level system information update

Abstract

Various aspects of the disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can receive a first system information update notification and a second system information update notification. The UE can decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update. The UE can update the one or more system information blocks based at least in part on decoding the second system information update notification. Numerous other aspects are also provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This Patent Application claims priority to U.S. Provisional Patent Application No. 62 / 706,289, titled “TWO-STAGE SYSTEM INFORMATION UPDATE” and filed on August 7, 2020, and U.S. Nonprovisional Patent Application No. 17 / 444,542, titled “TWO-STAGE SYSTEM INFORMATION UPDATE” and filed on August 5, 2021, which are expressly incorporated by reference herein. TECHNICAL FIELD

[0003] Aspects of the disclosure relate generally to wireless communication, and to techniques and apparatuses for two-stage system information update. BACKGROUND

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

[0005] A wireless network can include one or more base stations that support communication for a user equipment (UE) or multiple UEs. A UE can communicate with a base station via downlink communications and uplink communications. “Downlink” (or “DL”) refers to

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide common protocol that enables different UEs to communicate on a municipal, national, regional, and / or global level. NR, which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3 GPP. NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, support for SUMMARY

[0007] In some aspects, a method of wireless communication performed by a user equipment (UE) includes receiving a first system information update notification and a second system information update notification; decoding the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update; and updating the one or more system information blocks based at least in part on decoding the second system information update notification.

[0008] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory. The memory and the one or more processors are configured to receive a first system information update notification and a second system information update notification; decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update; and update the one or more system information blocks based at least in part on decoding the second system information update notification.

[0009] 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: receive a first system information update notification and a second system information update notification; decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update; and update the one or more system information blocks based at least in part on decoding the second system information update notification.

[0010] In some aspects, an apparatus for wireless communication includes means for receiving a first system information update notification and a second system information update notification; means for decoding the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to be updated; and means for updating the one or more system information blocks based at least in part on decoding the second system information update notification.

[0011] Some aspects described herein relate to a base station for wireless communication. The base station can include a memory and one or more processors coupled with the memory. The one or more processors can be configured to generate a first system information update notification and a second system information update notification, where the first system information update notification includes information associated with decoding the second system information update notification, and where the second system information update notification is associated with identifying one or more system information blocks to be updated. The one or more processors can be configured to transmit the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks.

[0012] Some aspects described herein relate to a method of wireless communication performed by a base station. The method can include generating a first system information update notification and a second system information update notification, where the first system information update notification includes information associated with decoding the second system information update notification, and where the second system information update notification is associated with identifying one or more system information blocks to be updated. The method can include transmitting the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks.

[0013] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication performed by a base station. The set of instructions, when executed by one or more processors of the base station, can cause the base station to generate a first system information update notification and a second system information update notification, where the first system information update notification includes information associated with decoding the second system information update notification, and where the second system information update notification is associated with identifying one or more system information blocks to be updated. The set of instructions, when executed by the one or more processors of the base station, can cause the base station to transmit the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus can include means for generating a first system information update notification and a second system information update notification, where the first system information update notification includes information associated with decoding the second system information update notification, and where the second system information update notification is associated with identifying one or more system information blocks to update. The apparatus can include means for transmitting the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks.

[0015] Aspects generally include a method, apparatus, system, computer program product, user equipment, base station, wireless communication device, and / or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and specification.

[0016] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions are not to be

[0017] While aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. Techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects can be implemented via integrated chip embodiments or other non-module component devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchasing devices, medical devices, and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices incorporating described aspects and features can include additional components and features for implementation and practice of claimed and described aspects. For example, transmission and reception of wireless signals can include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleaves, adders, and / or summers). It is intended that aspects described herein can be practiced in devices, components, systems, distributed arrangements, and / or end-user devices of a variety of sizes, shapes, and constitution. BRIEF DESCRIPTION OF DRAWINGS

[0018] So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, can be had by reference to various aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description can admit to other equally effective aspects. The same reference numbers in different drawings can identify the same or similar elements.

[0019] Figure 1 FIG. 1 is a diagram illustrating an example of a wireless network, in accordance with the present disclosure.

[0020] Figure 2 FIG. 2 is a diagram illustrating an example of a base station in communication with a user equipment (UE) in a wireless network, in accordance with the present disclosure.

[0021] Figure 3 FIG. 3 is a diagram illustrating an example of physical channels and reference signals in a wireless network, in accordance with the present disclosure.

[0022] Figure 4 FIG. 4 is a diagram illustrating an example associated with two-stage system information updating, in accordance with the present disclosure.

[0023] Figure 5 FIG. 5 is a diagram illustrating an example process associated with two-stage system information updating, in accordance with the present disclosure.

[0024] Figure 6 FIG. 6 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.

[0025] Figure 7 FIG. 7 is a diagram illustrating an example process associated with two-stage system information updating, in accordance with the present disclosure.

[0026] Figure 8 FIG. 8 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure. DETAILED DESCRIPTION

[0027] Aspects of the disclosure are described more fully below with reference to the drawings. This disclosure may, however, 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. One skilled in the art will understand that the scope of the disclosure is intended to cover any aspect of the disclosure, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover devices or methods that are supplements to or substitutions for the various aspects of the disclosure set forth herein. It is understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of a claim.

[0028] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0029] While aspects can be described herein using terminology commonly associated with a 5G or New Radio (NR) radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and / or a RAT subsequent to 5G (e.g., 6G).

[0030] Figure 1is a diagram illustrating an example of a wireless network 100 in accordance with the present disclosure. In other examples, the wireless network 100 can be or include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network. The wireless network 100 can include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. A base station 110 is an entity that communicates with UEs 120. Base stations 110 (sometimes referred to as base stations) can include, for example, NR base stations, LTE base stations, NodeBs, eNBs (e.g., in 4G), gNBs (e.g., in 5G), access points, and / or transmission reception points (TRPs). Each base station 110 can provide communication coverage for a particular geographic area. In Third Generation Partnership Project (3GPP), the term “cell” can refer to a coverage area of a base station 110 and / or a subsystem of a base station 110 that serves the coverage area, depending on the context in which the term is used.

[0031] The base stations 110 can provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., several kilometers in radius) and can allow unrestricted access by UEs 120 with service subscriptions. A pico cell can cover a relatively small geographic area and can allow unrestricted access by UEs 120 with service subscriptions. A femto cell can cover a relatively small geographic area (e.g., a home) and can allow restricted access by UEs 120 with service subscriptions, e.g., UEs 120 in an closed subscriber group (CSG). A base station 110 for a macro cell can be referred to as a macro base station. A base station 110 for a pico cell can be referred to as a pico base station. A base station 110 for a femto cell can be referred to as a femto base station or a home base station. In the example shown, a base station 110a can be a macro base station for a macro cell 102a, a base station 110b can be a pico base station for a pico cell 102b, and a base station 110c can be a femto base station for a femto cell 102c. A base station can support one or multiple (e.g., three) cells. Figure 1 In the example shown, the BS 110a can be a macro base station for a macro cell 102a, the BS 110b can be a pico base station for a pico cell 102b, and the BS 110c can be a femto base station for a femto cell 102c. A base station can support one or multiple (e.g., three) cells.

[0032] In some examples, a cell can not necessarily be fixed and the geographic area of a cell can move according to the location of a mobile base station 110 (e.g., a mobile base station). In some examples, base stations 110 can be interconnected to one another and / or to one or more other base stations or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces such as a direct physical connection or a virtual network, using any suitable transport network.

[0033] Wireless network 100 can include one or more relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a base station 110 or a UE 120) and send a transmission of the data to a downstream station (e.g., a UE 120 or a base station 110). A relay station can be a UE 120 that can relay transmissions for other UEs 120. In Figure 1 In the illustrated example, base station 110d (e.g., a relay base station) can communicate with BS 110a (e.g., a macro base station) and UE 120d in order to facilitate communication between BS 110a and UE 120d. A base station 110 that relays

[0034] Wireless network 100 can be a heterogeneous network that includes base stations 110 of different types, such as macro base stations, pico base stations, femto base stations, relay base stations, or the like. These different types of base stations 110 can have different transmit power levels, different coverage areas, and / or different impacts on interference. For example, macro base stations can have a high transmit power level (e.g., 5 to 40 watts) whereas pico base stations, femto base stations, and relay base stations can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0035] A network controller 130 can couple to or communicate with a set of base stations 110 and can provide coordination and control for these base stations 110. Network controller 130 can be in communication with base stations 110 via a backhaul communication link. Base stations 110 can communicate with one another directly or indirectly via wireless or wireline backhaul communication links.

[0036] The UEs 120 can be dispersed throughout the wireless network 100, and each UE 120 can be stationary or mobile. A UE 120 can include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. A UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biological device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart bracelet, smart jewelry (e.g., a smart ring or a smart necklace)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicular component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, and / or any other suitable device that is configured to communicate via a wireless medium.

[0037] Some UEs 120 can be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and / or eMTC UEs can include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, that can communicate with a base station, another device (e.g., remote device), or some other entity. A

[0038] In general, any number of wireless networks 100 can be deployed in a given geographic area. Each wireless network 100 can support a particular RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, and / or the like. A frequency can also be referred to as a carrier, a frequency channel, and / or the like. Each frequency can support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0039] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another). For example, UEs 120 can communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) protocols (which can include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols, and / or mesh networking. In this example, UEs 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base stations 110.

[0040] A base station (e.g., base station 110) can serve different UEs (e.g., UEs 120) of different categories and / or support different capabilities of different UEs. For example, a base station can serve a first category of UEs having less advanced capabilities (e.g., lower capability and / or reduced capability) and a second category of UEs having more advanced capabilities (e.g., higher capability). The first category of UEs can have a reduced feature set compared to the second category of UEs and can be referred to as reduced capability (RedCap) UEs, low tier UEs, and / or NR-Lite UEs, among other examples. The first category of UEs can be, for example, MTC UEs, eMTC UEs, and / or IoT UEs, as described above in connection with FIG. 1. The second category of UEs can have an advanced feature set compared to the first category of UEs and can be referred to as baseline UEs, high tier UEs, NR UEs, and / or advanced UEs, among other examples. The first category of UEs has capabilities that satisfy requirements of a first (earlier) wireless communication standard, but do not satisfy requirements of a second (later) wireless communication standard, while the second category of UEs has capabilities that satisfy requirements of the second (later) wireless communication standard (and, in some cases, also satisfy requirements of the first wireless communication standard). Figure 1

[0041] ​In other examples, the first category of UEs can support a lower maximum modulation and coding scheme (MCS) than the second category of UEs (e.g., quadrature phase shift keying (QPSK) or the like as compared to 256-quadrature amplitude modulation (QAM) or the like), can support a lower maximum transmit power than the second category of UEs, can have a less advanced beamforming capability than the second category of UEs (e.g., can not be capable of forming as many beams as the second category of UEs), can need a longer processing time than the second category of UEs, can include less hardware than the second category of UEs (e.g., fewer antennas, fewer transmit antennas, and / or fewer receive antennas), and / or can not be capable of communicating over a maximum bandwidth part as wide as the second category of UEs, among other examples. Additionally, or alternatively, the second category of UEs can be capable of communicating using shortened transmission time intervals (TTIs) (e.g., slot lengths of 1 ms or less, 0.5 ms, 0.25 ms, 0.125 ms, 0.0625 ms, or the like depending on subcarrier spacing), and the first category of UEs can not be capable of communicating using shortened TTIs.

[0042] Devices of wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided by frequency or wavelength into various classes, bands, channels, and so on. For example, devices of wireless network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (alternatively) in documents and articles as a “sub-6 GHz” band, regardless. A similar nomenclature issue sometimes occurs with regard to FR2, which, although partly greater than 6 GHz, is often referred to (alternatively) in documents and articles as a “millimeter wave” band, despite its overlap into the “sub-6 GHz” band.

[0043] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified these mid-band frequencies as the frequency range designation FR3 (7.125 GHz - 24.25 GHz) for operating bands. Bands that fall within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the characteristics of FR1 and / or FR2 to mid-band frequencies. Moreover, even higher bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as the frequency range designations FR4-a or FR4-l (52.6 GHz - 71 GHz), FR4 (52.6 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher bands falls within the EHF band.

[0044] With the above examples in mind, unless specifically stated otherwise, it should be understood that the term “sub-6 GHz” or the like, if used herein, can broadly represent frequencies that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. Further, unless specifically stated otherwise, it should be understood that the term “millimeter wave” or the like, if used herein, can broadly represent frequencies that can include mid-band frequencies, can be within FR2, FR4, FR4-a, or FR4-l, and / or FR5, or can be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-l, and / or FR5) can be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0045] In some aspects, UE 120 can include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 can receive a first system information update notification and a second system information update notification; decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update; and update the one or more system information blocks based at least in part on decoding the second system information update notification. Additionally, or alternatively, the communication manager 140 can perform, one or more other operations described herein.

[0046] In some aspects, base station 110 can include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 can generate a first system information update notification and a second system information update notification, where the first system information update notification includes information associated with decoding the second system information update notification, and where the second system information update notification is associated with identifying one or more system information blocks to update; and transmit the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks. Additionally, or alternatively, the communication manager 150 can perform one or more other operations described herein.

[0047] As described above, Figure 1 are provided as examples. Other examples can differ from what is described with respect to Figure 1 the examples described with respect to

[0048] Figure 2 is a diagram illustrating an example 200 of a base station 110 in communication with a UE 120 in a wireless network 100, in accordance with the present disclosure. Base station 110 can be equipped with a set of antennas 234a through 234t, such as T antennas (T > 1). UE 120 can be equipped with a set of antennas 252a through 252r, such as R antennas (R > 1).

[0049] At base station 110, a transmit processor 220 can receive data from a data source 212 for one or more UEs 120 (or groups of UEs 120). Transmit processor 220 can select one or more modulation and coding schemes (MCSs) for each UE 120 based at least in part on one or more channel quality indicators (CQIs) received from that UE 120. UE 120 can process (e.g., encode and modulate) data for UE 120 based at least in part on the MCS(s) selected for UE 120 and can provide data symbols for UE 120. Transmit processor 220 can 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 can generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and / or the reference symbols, if applicable, and can provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems), shown as modems 232a through 232t. Each output symbol stream can be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 can process each output symbol stream using a respective modulator component (e.g., for OFDM) to obtain an output sample stream. Each modem 232 can further process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream to obtain a downlink signal. Modems 232a through 232t can transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas), shown as antennas 234a through 234t.

[0050] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) can receive the downlink signals from base station 110 and / or other base stations 110 and can provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems), shown as modems 254a through 254r. For example, each received signal can be provided to a demodulator component (shown as DEMOD) of modems 254. Each modem 254 can condition (e.g., filter, amplify, downconvert, and / or digitize) a received signal to obtain input samples using a respective demodulator component. Each modem 254 can further process the input samples (e.g., for OFDM) using a demodulator component to obtain received symbols. A MIMO detector 256 can obtain received symbols from modems 254, perform MIMO detection on the received symbols if applicable, and can provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, can provide decoded data for UE 120 to a data sink 260, and can provide decoded control information and system information to a controller / processor 280. The term “controller / processor” can refer to one or more controllers, one or more processors, or combinations thereof. A channel processor can determine reference signal received power (RSRP) parameters, receive signal strength indicator (RSSI) parameters, reference signal received quality (RSRQ) parameters, and / or CQI parameters, among other examples. In some examples, one or more components of UE 120 can be included in a housing 284.

[0051] Network controller 130 can include communication unit 294, controller / processor 290, and memory 292. Network controller 130 can include, for example, one or more devices in a core network. Network controller 130 can communicate with base station 110 via communication unit 294.

[0052] One or more antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) can include, or can be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, among other examples. An antenna panel, antenna group, set of antenna elements, and / or antenna array can include one or more antenna elements (within a single housing or multiple housings), a set of co-planar antenna elements, a set of non-co-planar antenna elements, and / or one or more antenna elements coupled to one or more transmit and / or receive components (such as one or more components of Figure 2

[0053] ​At the UE 120, on the uplink, a transmit processor 264 can receive and process data from a 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 can generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 can be precoded by a TX MIMO processor 266 if applicable, then further processed by the modems 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some examples, the modems 254 of the UE 120 can include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver can include any combination of the antenna(s) 252, the modem(s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and / or the TX MIMO processor 266. The transceiver can be used by a processor (e.g., the controller / processor 280) and the memory 282 to perform aspects of any of the methods described herein (for example, as described with reference to Figures 4-6 ) and / or with respect to any other example described herein.

[0054] At the base station 110, the uplink signals from the UE 120 and / or other UEs can be received by the antennas 234, processed by the modems 232 (e.g., a demodulator component of the modems 232, shown as DEMOD), detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 can provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240. The base station 110 can include a communication unit 244 and can communicate with the network controller 130 via the communication unit 244. The base station 110 can include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modems 232 of the base station 110 can include a modulator and a demodulator. In some examples, the base station 110 includes a transceiver. The transceiver can include any combination of the antenna(s) 234, the modem(s) 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and / or the TX MIMO processor 230. The transceiver can be used by a processor (e.g., the controller / processor 240) and the memory 242 to perform aspects of any of the methods described herein (for example, as described with reference to Figures 4-6 ) and / or with respect to any other example described herein.

[0055] As described in more detail elsewhere in this document, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component(s) may perform one or more techniques associated with two-level system information updates. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component(s) can perform or direct, for example Figure 5 The process 500 operates and / or other processes described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium for storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly executed, or compiled, translated, and / or interpreted before execution), one or more instructions may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 5 The operation of process 500 and / or other processes described herein. In some examples, execution instructions may include run instructions, transformation instructions, compilation instructions, and / or interpretation instructions, etc.

[0056] In some aspects, UE 120 includes components for receiving a first system information update notification and a second system information update notification; components for decoding the second system information update notification, at least in part, based on information included in the first system information update notification, to identify one or more system information blocks to be updated; and / or components for updating one or more system information blocks, at least in part, based on the decoding of the second system information update notification. Components for UE 120 to perform the operations described herein may include, for example, one or more of the following: a communication manager 140, an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, or a memory 282.

[0057] In some aspects, the base station includes means for generating a first system information update notification and a second system information update notification, wherein the first system information update notification includes information associated with decoding the second system information update notification, and wherein the second system information update notification is associated with identifying one or more system information blocks to be updated; and / or means for transmitting the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks. The means for the base station to perform operations described herein can include, for example, one or more of the communication manager 150, transmit processor 220, TX MIMO processor 230, modems 232, antennas 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0058] Although Figure 2 The blocks in FIG. 14 are illustrated in a sequence for didactic clarity and can not necessarily be executed in the order illustrated. For example, not all blocks can be required to be executed or the blocks can be executed in another order. Also, techniques described in relation to blocks can be performed in parallel or with an error checking mechanism to ensure that the blocks have completed execution before other blocks are started.

[0059] As described above, Figure 2 Examples are provided for illustration. Other examples can be utilized that differ from the examples described in this section. Figure 2 Examples described with respect to

[0060] Figure 3 FIG. 1 is a diagram illustrating an example 100 of a wireless network according to the present disclosure. Base stations 110 can communicate with one or more UEs 120 in the wireless network. Each of the base stations 110 can be associated with a particular cell, and each of the UEs 120 can be located in a cell associated with a particular base station 110. Figure 3 As shown in FIG. 1, the base stations 110 can be in communication with one another over the backhaul 130. The backhaul 130 can facilitate communication between base stations 110, and can facilitate handovers. The backhaul 130 can be wired or wireless. The base stations 110 can also communicate with one another over the X2 interface.

[0061] As shown, the downlink channels can include a physical downlink control channel (PDCCH) that carries downlink control information (DCI), a physical downlink shared channel (PDSCH) that carries downlink data, or a physical broadcast channel (PBCH) that carries system information, etc. In some aspects, the PDSCH communications can be scheduled by the PDCCH communications. As further shown, the uplink channels can include a physical uplink control channel (PUCCH) that carries uplink control information (UCI), a physical uplink shared channel (PUSCH) that carries uplink data, or a physical random access channel (PRACH) for initial network access, etc. In some aspects, the UE 120 can send acknowledgment (ACK) or negative acknowledgment (NACK) feedback (e.g., ACK / NACK feedback or ACK / NACK information) in UCI on the PUCCH and / or in the PUSCH.

[0062] As further shown, the downlink reference signals can include a synchronization signal block (SSB), a channel state information (CSI) reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), or a phase tracking reference signal (PTRS), etc. As also shown, the uplink reference signals can include a sounding reference signal (SRS), a DMRS, or a PTRS, etc.

[0063] The SSBs can transmit information for initial network acquisition and synchronization, such as a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH, and a PBCH DMRS. The SSBs are sometimes referred to as synchronization signal / PBCH (SS / PBCH) blocks. The base station 110 can transmit multiple SSBs on multiple corresponding beams, and the SSBs can be used for beam selection.

[0064] CSI-RS can convey information for downlink channel estimation (e.g., downlink CSI acquisition), which can be used for scheduling, link adaptation, or beam management, among other examples. A base station 110 can configure a set of CSI-RS for a UE 120, and the UE 120 can measure the set of configured CSI-RS. Based at least in part on the measurements, the UE 120 can perform channel estimation and can report channel estimation parameters (e.g., in a CSI report) to the base station 110, such as a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a layer indicator (LI), a rank indicator (RI), or a reference signal received power (RSRP), among other examples. The base station 110 can use the CSI report to select transmission parameters for downlink communications to the UE 120, such as a number of transmission layers (e.g., a rank), a precoding matrix (e.g., a precoder), a modulation and coding scheme (MCS), or a refined downlink beam (e.g., using a beam refinement procedure or a beam management procedure), among other examples.

[0065] DMRS can convey information for estimating a radio channel to demodulate associated physical channels (e.g., PDCCH, PDSCH, PBCH, PUCCH, or PUSCH). The design and mapping of DMRS can be specific to the physical channel for which the DMRS is used to estimate. DMRS is UE-specific, can be beamformed, can be confined to scheduled resources (e.g., rather than transmitted over a wideband), and can only be transmitted when necessary. As shown, DMRS is used for both downlink communications and uplink communications.

[0066] PTRS can convey information for compensating for oscillator phase noise. Generally, phase noise increases as the oscillator carrier frequency increases. Thus, PTRS can be used for high carrier frequencies, such as millimeter wave frequencies, to mitigate phase noise. PTRS can be used to track the phase of a local oscillator and can suppress phase noise and common phase error (CPE). As shown, PTRS is used for both downlink communications (e.g., on PDSCH) and uplink communications (e.g., on PUSCH).

[0067] A PRS can carry information used to support timing or ranging measurements by a UE 120 based on signals transmitted by the base stations 110 to improve Observed Time Difference of Arrival (OTDOA) positioning performance. For example, a PRS can be a pseudo-random Quadrature Phase Shift Keying (QPSK) sequence that is mapped in a diagonal pattern with frequency and time shifts to avoid collision with cell-specific reference signals and control channels (e.g., PDCCH). In general, a PRS can be designed to improve detectability by a UE 120, which can need to detect downlink signals from multiple neighboring base stations in order to perform OTDOA-based positioning. Thus, the UE 120 can receive PRSs from multiple cells (e.g., a reference cell and one or more neighboring cells), and can report a Reference Signal Time Difference (RSTD) based on OTDOA measurements associated with the PRSs received from the multiple cells. In some aspects, the base stations 110 can then calculate a location of the UE 120 based on the RSTD measurements reported by the UE 120.

[0068] An SRS can convey information for uplink channel estimation, which can be used for scheduling, link adaptation, precoder selection, or beam management, among other examples. A base station 110 can configure one or more SRS resource sets for a UE 120, and the UE 120 can transmit SRSs on the configured SRS resource sets. An SRS resource set can have a configured purpose, such as uplink CSI acquisition, downlink CSI acquisition for reciprocity-based operations, uplink beam management, among other examples. The base station 110 can measure the SRSs, can perform channel estimation based at least in part on the measurements, and can use the SRS measurements to configure communications with the UE 120.

[0069] As described above, Figure 3 are provided by way of example. Other examples can differ from what is described Figure 3 without departing from the spirit of the described examples.

[0070] In some communication systems, a base station can broadcast system information to UEs in a cell. For example, the base station can transmit a master information block (MIB) on a physical broadcast channel (PBCH). Additionally or alternatively, the base station can transmit a system information block (SIB) (e.g., SIB Type 1 (SIB1) conveying remaining minimum system information (RMSI)) on a physical downlink shared channel (PDSCH) scheduled by downlink control information scrambled with a system information (SI) radio network temporary identifier (RNTI). After a UE acquires system information of a cell by receiving the MIB and / or the SIB, the UE can not re-acquire the system information until the system information is updated.

[0071] To update system information, a base station can transmit an indication to UEs of a cell requesting the UEs to communicate with the base station to reacquire system information. In other words, a UE having first system information can communicate with a base station to acquire second system information that is an update to the first system information. In this case, the base station can transmit a short message, which can be a DCI type scrambled with a paging RNTI (P-RNTI). The UE can receive the short message and can determine to communicate with the base station to reacquire system information.

[0072] System information can include information that enables a UE to establish a connection to a network, monitor the network, and / or the like. For example, system information can include information that identifies a set of configurations of paging channels, a set of configurations of random access procedures, a set of configurations of neighboring cells, and / or the like. However, when new features are deployed in a network for new types of UEs, system information can include information that identifies additional configurations, such as a configuration of a two-step random access channel (RACH) procedure, a configuration of a high-efficiency paging procedure, or a resource configuration for a particular service (e.g., a V2X service, an MTC service, a RedCap service, a satellite service, and / or the like).

[0073] However, legacy types of UEs can not be compatible with some of the new features. For example, a first type of UE (e.g., a non-legacy UE) can be capable of using a high-efficiency paging procedure, but a second type of UE (e.g., a legacy UE) can not be capable of using the high-efficiency paging procedure. Further, some of the new features can be updated more frequently than other legacy types of features. For example, a high-efficiency paging procedure can be updated based at least in part on cell conditions, which can result in relatively frequent system information updates. Accordingly, a base station can transmit an indication to all UEs (non-legacy or legacy UEs) of a cell requesting the UEs to reacquire system information. The frequent reacquisition of system information can result in UEs that are not capable of using the features (legacy UEs) over-utilizing network resources, over-utilizing power resources, and / or the like, while the system information updates are triggered based at least in part on the features.

[0074] Some techniques have been proposed to optimize the system information update procedure. For example, a UE can parse a short message that includes a system information update notification to identify a set of UE capabilities that are relevant to the system information update message. Accordingly, if the UE has a capability that is relevant to the system information update notification (e.g., the UE is a first type of UE, such as a non-legacy UE), the UE can reacquire system information. Conversely, if the UE does not have a capability to use a procedure for which a configuration is to be updated with new system information (e.g., the UE is a second type of UE, such as a legacy UE), the UE can forgo reacquiring system information and can continue to use previous system information, which is unchanged for aspects of system information that the UE is capable of using.

[0075] However, using short messages can only provide a limited number of bits to indicate information about the system information to be updated. For example, the short message field of DCI could include only 5 bits. Therefore, the information about which SIBs in the system information need to be updated may be limited, which may prevent the UE from accurately determining whether to reacquire SIBs. As an example, using short messages may prevent the inclusion of information about SIB validity, which could prevent the UE from performing validity checks on currently stored SIBs and determining whether to update currently stored SIBs based at least in part on the result of the validity check.

[0076] Some aspects described herein provide a two-step system information process to achieve improved system information updates. For example, a UE may receive a first system information update notification (e.g., in a short message) and a second system information update notification (e.g., in another message or field longer than a short message but shorter than a complete SIB1). The UE (e.g., if it is a first-type UE, such as a non-traditional UE) may decode the first system information update notification to determine that a partial system information change is about to occur, which may trigger the UE to decode the second system information update notification. The UE may decode the second system information update notification, at least in part, based on the decoding of the first system information update notification, to determine whether to reacquire one or more SIBs.

[0077] In this scenario, when the UE possesses one or more capabilities (e.g., associated with a UE of type 1, such as a non-traditional UE), where the configuration of these capabilities will be updated with new system information, the UE can reacquire one or more SIBs when it determines that one or more current SIBs are invalid. Conversely, when the UE does not possess one or more capabilities to be updated (e.g., the UE is a type 2 UE, such as a traditional UE) and / or does not have any invalid SIBs, the UE can forgo reacquiring the new system information. In this way, compared to signaling new system information using SIB1, the UE reduces the message overhead for acquiring system information, and compared to a system information update process based on single-step short messages, the UE increases the decision granularity for reacquiring new system information.

[0078] Figure 4 This is a diagram illustrating example 400 associated with two-level system information updates according to various aspects of this disclosure. (See diagram for example.) Figure 4 As shown, Example 400 includes communication between base station 110 and UE 120. In some aspects, base station 110 and UE 120 may be included in a wireless network, such as wireless network 100. Base station 110 and UE 120 may communicate on a radio access link, which may include an uplink and a downlink.

[0079] As Figure 4 As further shown in FIG. 13, by reference numbers 410 and 420, the UE 120 can receive a first system information update notification and a second system information update notification. For example, the base station 110 can generate and transmit a first message and a second message, and the UE 120 can receive the first message and the second message, the first message including the first system information update notification and the second message including the second system information update notification. Additionally or alternatively, the base station 110 can generate and transmit a single message, and the UE 120 can receive the single message, the single message including one or more first fields for the first system information update notification and one or more second fields for the second system information update notification.

[0080] In some aspects, the first system information update notification is included in a DCI. For example, the UE 120 can receive a DCI having a short message field including a bit indicator. In this case, the UE 120 can parse the bit indicator to determine that the short message field indicates a partial system information update. In this case, when the UE 120 is a first type of UE having certain capabilities (e.g., a non-legacy UE), the UE 120 can decode the second system information update notification to determine which SIBs or which portions of SIBs are to be updated and reacquired in connection with the partial system information update. Conversely, when the UE 120 is a second type of UE without certain capabilities (e.g., a legacy UE), the UE 120 can not decode the second system information update notification. In other words, a legacy type of UE can update the capabilities and system information blocks related to the first system information update but can not update the capabilities and system information blocks related to the second system information update, while a non-legacy type of UE can update the capabilities and system information blocks related to the first system information update and the second system information update, as described in more detail herein.

[0081] In some aspects, the first system information update notification is included in a DCI of a dedicated DCI format type. For example, the UE 120 can receive a DCI having a format defined to provide the first system information update notification. Additionally or alternatively, the UE 120 can receive a DCI having a certain radio network temporary identifier (RNTI) that indicates that the DCI includes the first system information update notification. In this case, the RNTI can be different from a paging RNTI (P-RNTI) that can be used for other DCIs.

[0082] As Figure 4As further shown, and by reference numeral 430, UE 120 can determine whether to decode a second system information update notification, at least in part, based on a first system information update notification. For example, UE 120 can parse a DCI including the first system information update notification to determine that a partial system information update process has been triggered, and can decode the second system information update notification to identify one or more SIBs to be reacquired, in whole or in part. In some aspects, the second system information update notification is included in the same transmission (e.g., DCI) as the first system information update notification. For example, UE 120 can parse a DCI (e.g., paging DCI) including a first field (e.g., short message field) for the first system information update notification to identify a second field for the second system information update notification. Additionally or alternatively, UE 120 can parse a different DCI to identify the second system information update notification. Additionally or alternatively, UE 120 can parse a Physical Downlink Shared Channel (PDSCH) scheduled by a DCI including the first system information update notification to identify the second system information update notification. In this way, UE 120 can determine one or more SIBs to be updated.

[0083] In some respects, UE 120 may perform validity checks on one or more SIBs, at least in part, based on decoding a second system information update notification. For example, the second system information update notification may include parameters for validating one or more SIBs, and UE 120 may perform the validity checks (to determine whether one or more SIBs are still valid). In this case, based at least in part on the result of the validity check, UE 120 may reacquire system information for at least one invalid SIB (e.g., SIB1, MIB, etc.) or a portion of an SIB. In this way, UE 120 reduces the amount of decoding compared to decoding the entire SIB1 to check the validity of other SIBs.

[0084] like Figure 4 As further shown in the figure, UE 120 can reacquire system information via reference numeral 440. For example, based at least in part on the information included in the second system information update notification and / or the results of a validity check, UE 120 can communicate with base station 110 to update and / or reacquire system information for one or more invalid SIBs.

[0085] As mentioned above, Figure 4 This is provided as an example. Other examples may be related to... Figure 4 The examples described are different.

[0086] Figure 5is a diagram illustrating an example process 500 performed, for example, by a user equipment (UE), in accordance with the present disclosure. Example process 500 is an example where the UE (e.g., UE 120) performs operations associated with two-stage system information updating.

[0087] As Figure 5 shown, in some aspects, process 500 can include receiving a first system information update notification and a second system information update notification (block 510). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, and / or memory 282) can receive a first system information update notification and a second system information update notification, as described above.

[0088] As Figure 5 further shown in FIG. 5B, in some aspects, process 500 can include decoding the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update (block 520). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282) can decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update, as described above.

[0089] As Figure 5 further shown in FIG. 5B, in some aspects, process 500 can include decoding the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update (block 520). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282) can decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update, as described above.

[0090] Process 500 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0091] In a first aspect, the first system information update notification includes at least one of: a short message on downlink control information addressed to a paging radio network temporary identifier (P-RNTI), a different downlink control message than the downlink control information for the short message, or a radio network temporary identifier.

[0092] In a second aspect, alone or in combination with the first aspect, the second system information update notification includes an indicator associated with a validity check of a set of system information blocks stored for the UE.

[0093] In a third aspect, alone or in combination with one or more of the first and second aspects, the process 500 includes performing a validity check of the set of system information blocks, wherein a result of the validity check is that one or more system information blocks are invalid, and wherein updating the one or more system information blocks includes updating the one or more system information blocks based at least in part on the one or more system information blocks being invalid.

[0094] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the second system information update notification is a different message type and is associated with fewer bits than a system information block type 1.

[0095] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the second system information update notification is communicated via at least one of: a same downlink control information that the first system information update notification is communicated on, a different downlink control information than the downlink control information that the first system information update notification is communicated on, a physical downlink shared channel message, or a paging physical downlink shared channel message.

[0096] In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the one or more system information blocks include at least one of: a master information block, a system information block type 1, or a system information block of a different type than type 1.

[0097] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, updating the one or more system information blocks includes partially or entirely updating a system information block of the one or more system information blocks.

[0098] Although Figure 5 Exemplary blocks of the process 500 are illustrated, but in some aspects, the process 500 can include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. 5. Additionally, or alternatively, two or more blocks of the process 500 can be performed concurrently. Figure 5

[0099] Figure 6 ​is a block diagram of an example apparatus 600 for wireless communication. The apparatus 600 can be a UE, or a UE can include the apparatus 600. In some aspects, the apparatus 600 includes a reception component 602 and a transmission component 604, which can be in communication with one another (for example, via one or more buses and / or one or more other components). As shown, the apparatus 600 can communicate with another apparatus 606 (such as a UE, a base station, or another wireless communication device) using the reception component 602 and the transmission component 604. As further shown, the apparatus 600 can include a communication manager 140. The communication manager 140 can include one or more of a decoding component 608, an updating component 610, or a validity check component 612, among other examples.

[0100] In some aspects, the apparatus 600 can be configured to perform one or more operations described herein with reference to Figure 4 In some aspects, the apparatus 600 can be configured to perform one or more operations described herein with reference to Figure 5 In some aspects, the apparatus 600 can be configured to perform one or more operations described herein with reference to Figure 6 The apparatus 600 and / or one or more components thereof, as shown in FIG. 12, can include one or more components of the UE described above in connection with FIG. 1. Additionally, or Figure 2 The one or more components, as shown in FIG. 12, can be implemented within one or more components described above in connection with FIG. 1. Additionally, or Figure 6 The one or more components, as shown in FIG. 12, can be implemented within one or more components described above in connection with FIG. 1. Additionally, or Figure 2 Additionally, or alternatively, one or more components of the group of components can be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) can be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.

[0101] The reception component 602 can receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 606. The reception component 602 can provide received communications to one or more other components of the apparatus 600. In some aspects, the reception component 602 can perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and can provide the processed signals to the one or more other components of the apparatus 606. In some aspects, the reception component 602 can include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof, of the UE described above in connection with FIG. 1. Figure 2

[0102] ​The transmission component 604 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 606. In some aspects, one or more other components of the apparatus 606 can generate communications and can provide the generated communications to the transmission component 604 for transmission to the apparatus 606. In some aspects, the transmission component 604 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the apparatus 606. In some aspects, the transmission component 604 can include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the described UE. In some aspects, the transmission component 604 can be co-located with the reception component 602 in a transceiver. Figure 2 The transmission component 604 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 606. In some aspects, one or more other components of the apparatus 606 can generate communications and can provide the generated communications to the transmission component 604 for transmission to the apparatus 606. In some aspects, the transmission component 604 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the apparatus 606. In some aspects, the transmission component 604 can include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the described UE. In some aspects, the transmission component 604 can be co-located with the reception component 602 in a transceiver.

[0103] The reception component 602 can receive a first system information update notification and a second system information update notification. The decoding component 608 can decode the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update. The updating component 610 can update the one or more system information blocks based at least in part on decoding the second system information update notification.

[0104] The validity check component 612 can perform a validity check on a set of system information blocks, where a result of the validity check is that one or more system information blocks are invalid.

[0105] Figure 6 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally or alternatively, a component shown in FIG. 10 can perform one or more functions of another component shown in FIG. 10. Figure 6 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally or alternatively, a component shown in FIG. 10 can perform one or more functions of another component shown in FIG. 10. Figure 6 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally or alternatively, a component shown in FIG. 10 can perform one or more functions of another component shown in FIG. 10. Figure 6 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally or alternatively, a component shown in FIG. 10 can perform one or more functions of another component shown in FIG. 10. Figure 6 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally or alternatively, a component shown in FIG. 10 can perform one or more functions of another component shown in FIG. 10. Figure 6 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally or alternatively, a component shown in FIG. 10 can perform one or more functions of another component shown in FIG. 10.

[0106] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a base station, in accordance with the present disclosure. Example process 700 is an example where the base station (e.g., base station 110) performs operations associated with two-level system information updates.

[0107] As Figure 7As shown, in some aspects, process 700 may include generating a first system information update notification and a second system information update notification (block 710). For example, as described above, the base station (e.g., using...) Figure 8 The communication manager 150 and / or generation component 808 depicted herein can generate a first system information update notification and a second system information update notification. In some aspects, the first system information update notification includes information associated with decoding the second system information update notification. In some aspects, the second system information update notification is associated with identifying one or more system information blocks to be updated.

[0108] like Figure 7 As further shown, in some aspects, process 700 may include sending a first system information update notification and a second system information update notification to trigger an update to one or more system information blocks (block 720). For example, as described above, the base station (e.g., using...) Figure 8 The communication manager 150 and / or sending component 804 depicted in the diagram can send a first system information update notification and a second system information update notification to trigger an update to one or more system information blocks.

[0109] Process 700 may include additional aspects, such as any single aspect or any combination of aspects of one or more other processes described below and / or in conjunction with one or more other processes described elsewhere herein.

[0110] In a first aspect, the first system information update notification can be decoded by a first type of UE and a second type of UE, the first type of UE being configured with a specific capability related to one or more system information blocks, while the second type of UE is not configured with such a specific capability, wherein the second system information update notification can be triggered by the first type of UE to update one or more system information blocks, but cannot be decoded by the second type of UE.

[0111] In a second aspect, either alone or in combination with the first aspect, sending a first system information update notification and a second system information update notification includes: sending a first system information update notification to trigger a first update for a first type of UE and a second type of UE, wherein the first system information update notification is decodeable by the first type of UE and the second type of UE and is associated with a first capability of the first type of UE and the second type of UE; and sending a second system information update notification to trigger a second update for the first type of UE but not for the second type of UE, wherein the second system information update notification is decodeable by the first type of UE but not by the second type of UE, and wherein the second system information update notification is associated with a second capability of the first type of UE but not the second type of UE, and the second capability is associated with one or more system information blocks.

[0112] In a third aspect, alone or in combination with one or more of the first and second aspects, the first system information update notification includes at least one of: a short message on downlink control information addressed to a paging radio network temporary identifier (P-RNTI), a different downlink control message than downlink control information for the short message, or a radio network temporary identifier.

[0113] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the second system information update notification includes an indicator associated with a validity check for a set of system information blocks.

[0114] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the process 700 includes updating one or more system information blocks based at least in part on the one or more system information blocks being invalid for a recipient of the second system information update notification.

[0115] In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the process 700 includes partially or entirely updating a system information block of the one or more system information blocks.

[0116] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the one or more system information blocks include at least one of: a master information block, a system information block type 1, or a system information block of a different type than type 1.

[0117] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the second system information update notification is a different message type and is associated with fewer bits than the system information block type 1.

[0118] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the second system information update notification is transmitted via at least one of: a same downlink control information that the first system information update notification is transmitted on, a different downlink control information than the first system information update notification is transmitted on, a physical downlink shared channel message, or a paging physical downlink shared channel message.

[0119] Although Figure 7 The example blocks of the process 700 are illustrated in serial Figure 7 blocks depicted in FIG. 7. Additionally or alternatively, two or more of the blocks of the process 700 can be performed in parallel.

[0120] Figure 8is a diagram of an example apparatus 800 for wireless communication. The apparatus 800 can be a base station, or a base station can include the apparatus 800. In some aspects, the apparatus 800 includes a reception component 802 and a transmission component 804, which can be in communication with one another (for example, via one or more buses and / or one or more other components). As shown, the apparatus 800 can communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device) using the reception component 802 and the transmission component 804. As further shown, the apparatus 800 can include a communication manager 150. The communication manager 150 can include one or more of a generation component 808, or an update component 810, among other examples.

[0121] In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to Figure 4 In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to Figure 7 In some aspects, the apparatus 800 and / or one or more components shown in Figure 8 may include one or more components of the base station described above in Figure 2 In some aspects, one or more components of the apparatus 800 and / or one or more components shown in Figure 8 may be implemented within one or more components of the base station described above in Figure 2 In some aspects, one or more components of the apparatus 800 and / or one or more components shown in

[0122] The reception component 802 can receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 806. The reception component 802 can provide received communications to one or more other components of the apparatus 800. In some aspects, the reception component 802 can perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and can provide the processed signals to the one or more other components of the apparatus 806. In some aspects, the reception component 802 can include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof, of the base station described above in Figure 2

[0123] ​The transmission component 804 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 806. In some aspects, one or more other components of the apparatus 806 can generate communications and can provide the generated communications to the transmission component 804 for transmission to the apparatus 806. In some aspects, the transmission component 804 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the apparatus 806. In some aspects, the transmission component 804 can include one or more antennas, a modulator, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the described base station. In some aspects, the transmission component 804 can be co-located with the reception component 802 in a transceiver. Figure 2 The transmission component 804 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 806. In some aspects, one or more other components of the apparatus 806 can generate communications and can provide the generated communications to the transmission component 804 for transmission to the apparatus 806. In some aspects, the transmission component 804 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the apparatus 806. In some aspects, the transmission component 804 can include one or more antennas, a modulator, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the described base station. In some aspects, the transmission component 804 can be co-located with the reception component 802 in a transceiver.

[0124] The generation component 808 can generate a first system information update notification and a second system information update notification, where the first system information update notification includes information associated with decoding the second system information update notification, and where the second system information update notification is associated with identifying one or more system information blocks to be updated. The transmission component 804 can transmit the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks.

[0125] The update component 810 can update the one or more system information blocks based at least in part on the one or more system information blocks being invalid for a receiver of the second system information update notification. The update component 810 can update a system information block of the one or more system information blocks in part or in whole.

[0126] Figure 8 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally, or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally, or alternatively, a group of components shown in FIG. 10 can be implemented to Figure 8 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally, or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally, or alternatively, a group of components shown in FIG. 10 can be implemented to Figure 8 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally, or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally, or alternatively, a group of components shown in FIG. 10 can be implemented to Figure 8 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally, or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally, or alternatively, a group of components shown in FIG. 10 can be implemented to Figure 8 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally, or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally, or alternatively, a group of components shown in FIG. 10 can be implemented to Figure 8 The number and arrangement of components shown in FIG. 10 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 10. Additionally, or alternatively, two or more components shown in FIG. 10 can be implemented within a single component, or a single component shown in FIG. 10 can be implemented as multiple, distributed components. Additionally, or alternatively, a group of components shown in FIG. 10 can be implemented to

[0127] The following provides an overview of some aspects of the disclosure:

[0128] Aspect 1: A method of wireless communication performed by a user equipment (UE) comprising: receiving a first system information update notification and a second system information update notification; decoding the second system information update notification based at least in part on information included in the first system information update notification to identify one or more system information blocks to update; and updating the one or more system information blocks based at least in part on decoding the second system information update notification.

[0129] Aspect 2: The method of aspect 1, wherein the first system information update notification comprises at least one of: a short message on downlink control information addressed to a paging radio network temporary identifier (P-RNTI), a different downlink control message than the downlink control information for the short message, or a radio network temporary identifier.

[0130] Aspect 3: The method of aspect 1, wherein the second system information update notification comprises an indicator associated with a validity check of a set of system information blocks stored for the UE.

[0131] Aspect 4: The method of aspect 3, further comprising: performing a validity check of the set of system information blocks, wherein a result of the validity check is that one or more system information blocks are invalid; and wherein updating the one or more system information blocks comprises updating the one or more system information blocks based at least in part on the one or more system information blocks being invalid.

[0132] Aspect 5: The method of aspect 1, wherein the one or more system information blocks comprise at least one of: a master information block, a system information block type 1, or a system information block of a different type than type 1.

[0133] Aspect 6: The method of aspect 1, wherein updating the one or more system information blocks comprises partially or entirely updating a system information block of the one or more system information blocks.

[0134] Aspect 7: The method of aspect 1, wherein the second system information update notification is a different message type and is associated with fewer bits than a system information block type 1.

[0135] Aspect 8: The method of aspect 1, wherein the second system information update notification is conveyed via at least one of: a same downlink control information that the first system information update notification is conveyed on, a different downlink control information than the first system information update notification is conveyed on, a physical downlink shared channel message, or a paging physical downlink shared channel message.

[0136] Aspect 9: A method of wireless communication performed by a base station, comprising: generating a first system information update notification and a second system information update notification, wherein the first system information update notification includes information associated with decoding the second system information update notification, and wherein the second system information update notification is associated with identifying one or more system information blocks to be updated; and transmitting the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks.

[0137] Aspect 10: The method of aspect 9, wherein the first system information update notification is decodable by a first type of UE configured with a particular capability related to the one or more system information blocks and a second type of UE not configured with the particular capability, and wherein the second system information update notification is decodable by the first type of UE to trigger the update of the one or more system information blocks and not by the second type of UE.

[0138] Aspect 11: The method of any of aspects 9-10, comprising: transmitting the first system information update notification to trigger a first update of the first type of UE and the second type of UE, wherein the first system information update notification is decodable by the first type of UE and the second type of UE and related to a first capability of the first type of UE and the second type of UE; and transmitting the second system information update notification to trigger a second update of the first type of UE and not the second type of UE, wherein the second system information update notification is decodable by the first type of UE and not the second type of UE, and wherein the second system information update notification is related to a second capability of the first type of UE and not the second type of UE, and the second capability is associated with the one or more system information blocks.

[0139] Aspect 12: The method of any of aspects 9-11, wherein the first system information update notification includes at least one of: a short message on downlink control information addressed to a paging radio network temporary identifier (P-RNTI), a different downlink control message than for the short message, or a radio network temporary identifier.

[0140] Aspect 13: The method of any of aspects 9-12, wherein the second system information update notification includes an indicator associated with a validity check for a set of system information blocks.

[0141] Aspect 14: The method of any of aspects 9-13, further comprising: updating the one or more system information blocks based at least in part on the one or more system information blocks being invalid for a recipient of the second system information update notification.

[0142] Aspect 15: The method of aspect 14, wherein updating the one or more system information blocks comprises partially or entirely updating a system information block of the one or more system information blocks.

[0143] Aspect 16: The method of any one of aspects 9 through 15, wherein the one or more system information blocks comprise at least one of: a master information block, a system information block type 1, or a system information block of a different type than type 1.

[0144] Aspect 17: The method of any one of aspects 9 through 16, wherein the second system information update notification is a different message type and is associated with fewer bits than the system information block type 1.

[0145] Aspect 17: The method of any one of aspects 9 through 13, wherein the second system information update notification is conveyed via at least one of: a same downlink control information that conveys the first system information update notification, a different downlink control information than the downlink control information that conveys the first system information update notification, a physical downlink shared channel message, or a paging physical downlink shared channel message.

[0146] Aspect 18: An apparatus for wireless communication at a device, comprising a processor, memory coupled with the processor, and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more aspects of aspects 1-8.

[0147] Aspect 19: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more aspects of aspects 1-8.

[0148] Aspect 20: An apparatus for wireless communication, comprising at least one means for performing the method of one or more aspects of aspects 1-8.

[0149] Aspect 21: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1-8.

[0150] Aspect 22: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions when executed by one or more processors of a device cause the device to perform the method of one or more aspects of aspects 1-8.

[0151] Aspect 23: An apparatus for wireless communication at a device, comprising a processor, a memory coupled to the processor, and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods of aspects 9-17.

[0152] Aspect 24: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors being configured to perform the methods of one or more aspects of aspects 9-17.

[0153] Aspect 25: An apparatus for wireless communication, comprising at least one component for performing the methods of one or more aspects of aspects 9-17.

[0154] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods of one or more aspects of aspects 9-17.

[0155] Aspect 27: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more methods of aspects 9-17.

[0156] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit these aspects to the precise forms disclosed. Modifications and alterations may be made based on the foregoing disclosure, or from various practices.

[0157] As used herein, the term "component" is intended to be understood broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other forms, software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, and / or functions. As used herein, a "processor" is implemented as hardware and / or a combination of hardware and software. Clearly, the systems and / or methods described herein can be implemented in various forms of hardware and / or hardware and software combinations. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, this document does not refer to specific software code to describe the operation and behavior of systems and / or methods, as those skilled in the art will understand that software and hardware can be designed to implement systems and / or methods, at least in part, based on the descriptions herein.

[0158] As used herein, depending on the context, “satisfies a threshold” can refer to a value that is 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.

[0159] Even if a particular combination is recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features can be combined in ways not specifically recited in the claims and / or disclosed in the specification. The disclosure of various aspects includes each and every combination of the elements from any other aspects that can be recited in the claims. As used herein, the phrase “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, a+b, a+c, b+c, and a+b+c, as well as any combination of items from the group (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c or any other ordering of a, b, and c).

[0160] No element, act or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and can be used interchangeably with “one or more.” Furthermore, as used herein, the articles “the” and “said” are intended to include one or more items unless otherwise indicated by context. Moreover, as used herein, the terms “set” and “group” are intended to include one or more items and can be used interchangeably with “one or more.” If only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has,” “have,” or “having” or variants thereof are intended to be open-ended terms that do not limit the item that the member has to only the elements specified and leave open the possibility that the item has additional elements not specified. Further, the phrase “based on” is intended to be open-ended, and is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series list and can be used interchangeably with “and / or,” unless explicitly stated otherwise (e.g., if used in combination with “either” or “only one of’).

Claims

1. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the processors configured to: receive a first system information update notification and a second system information update notification; decode the second system information update notification based at least in part on information included in the first system information update notification; identify one or more system information blocks to update based at least in part on decoding the second system information update notification; and update the one or more system information blocks based at least in part on identifying the one or more system information blocks to update. the first system information update notification is decodable by a first type of UE configured with a particular capability related to the one or more system information blocks and a second type of UE not configured with the particular capability, wherein the second system information update notification is decodable by the first type of UE to trigger an update to the one or more system information blocks and not decodable by the second type of UE.

2. The UE of claim 1, wherein, the first system information update notification includes at least one of: a short message on a downlink control information addressed to a paging radio network temporary identifier (P-RNTI), 3. The UE of claim 1, wherein, a downlink control message different from a downlink control information for the short message, or a radio network temporary identifier. the second system information update notification includes an indicator associated with a validity check of a set of system information blocks stored for the UE. the one or more processors are further configured to:

4. The UE of claim 1, wherein, perform the validity check on the set of system information blocks, wherein a result of the validity check is that the one or more system information blocks are invalid; and 5. The UE of claim 4, wherein, wherein to update the one or more system information blocks, the one or more processors are configured to: update the one or more system information blocks based at least in part on the one or more system information blocks being invalid. the one or more system information blocks include at least one of: a master information block, 6. The UE of claim 1, wherein, a system information block type 1, or a system information block of a type different from type 1. to update the one or more system information blocks, the one or more processors are configured to: partially or entirely update a system information block of the one or more system information blocks.

7. The UE of claim 1, wherein, the second system information update notification is a different message type and is associated with fewer bits than a system information block type 1. the second system information update notification is conveyed via at least one of:

8. The UE of claim 1, wherein, a same downlink control information that conveys the first system information update notification, 9. The UE of claim 1, wherein, a different downlink control information than a downlink control information that conveys the first system information update notification, a physical downlink shared channel message, or a paging physical downlink shared channel message.

10. A method of wireless communication performed by a user equipment (UE), comprising: receiving a first system information update notification and a second system information update notification; ​ ​ decoding the second system information update notification based at least in part on the information included in the first system information update notification; and identifying one or more system information blocks to update based at least in part on decoding the second system information update notification; and reacquiring and updating the one or more system information blocks based at least in part on identifying the one or more system information blocks to update.

11. The method of claim 10, wherein, the first system information update notification is decodable by a first type of UE configured with a particular capability related to the one or more system information blocks and a second type of UE not configured with the particular capability, wherein the second system information update notification is decodable by the first type of UE to trigger updating of the one or more system information blocks and not decodable by the second type of UE.

12. The method of claim 10, wherein, the first system information update notification includes at least one of: a short message on a downlink control information addressed to a paging radio network temporary identifier (P-RNTI), a downlink control message different from a downlink control information used for the short message, or a radio network temporary identifier.

13. The method of claim 10, wherein, the second system information update notification includes an indicator associated with a validity check of a set of system information blocks stored for the UE.

14. The method of claim 13, further comprising: performing the validity check on the set of system information blocks, wherein a result of the validity check is that the one or more system information blocks are invalid; and wherein updating the one or more system information blocks includes: updating the one or more system information blocks based at least in part on the one or more system information blocks being invalid.

15. The method of claim 10, wherein, the one or more system information blocks include at least one of: a master information block, a system information block type 1, or a system information block of a type different from type 1.

16. The method of claim 10, wherein, updating the one or more system information blocks includes: partially or entirely updating a system information block of the one or more system information blocks.

17. The method of claim 10, wherein, the second system information update notification is a different message type and associated with fewer bits than a system information block type 1.

18. The method of claim 10, wherein, the second system information update notification is transmitted via at least one of: a same downlink control information that the first system information update notification is transmitted on, a different downlink control information than the downlink control information that the first system information update notification is transmitted on, a physical downlink shared channel message, or a paging physical downlink shared channel message.

19. A base station for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the processors configured to: generate a first system information update notification and a second system information update notification, wherein the first system information update notification includes information associated with decoding the second system information update notification, and wherein the second system information update notification is associated with identifying one or more system information blocks to update; and ​ transmitting a first system information update notification and a second system information update notification to trigger an update to the one or more system information blocks; and transmitting the one or more system information blocks.

20. The base station of claim 19, wherein, The first system information update notification is decodable by a first type of UE and a second type of UE, the first type of UE being configured with a particular capability related to the one or more system information blocks, and the second type of UE not being configured with the particular capability, wherein the second system information update notification is decodable by the first type of UE to trigger the update to the one or more system information blocks, and not decodable by the second type of UE.

21. The base station of claim 19, wherein, To transmit the first system information update notification and the second system information update notification, the one or more processors are configured to: transmit the first system information update notification to trigger a first update to a first type of UE and a second type of UE, wherein the first system information update notification is decodable by the first type of UE and the second type of UE, and related to a first capability of the first type of UE and the second type of UE; and transmit the second system information update notification to trigger a second update to the first type of UE and not to the second type of UE, wherein the second system information update notification is decodable by the first type of UE and not decodable by the second type of UE, and wherein the second system information update notification is related to a second capability of the first type of UE and not the second type of UE, the second capability being associated with the one or more system information blocks.

22. The base station of claim 19, wherein, The first system information update notification includes at least one of: a short message on a downlink control information addressed to a paging radio network temporary identifier (P-RNTI), a downlink control message different from a downlink control information used for the short message, or a radio network temporary identifier.

23. The base station of claim 19, wherein, The second system information update notification includes an indicator associated with a validity check for a set of system information blocks.

24. The base station of claim 19, wherein, The one or more processors are further configured to: update the one or more system information blocks based at least in part on the one or more system information blocks being invalid for a recipient of the second system information update notification.

25. The base station of claim 24, wherein, To update the one or more system information blocks, the one or more processors are configured to: partially or entirely update a system information block of the one or more system information blocks.

26. The base station of claim 19, wherein, The one or more system information blocks include at least one of: a master information block, a system information block type 1, or a system information block of a type different from type 1.

27. The base station of claim 19, wherein, The second system information update notification is a different message type and associated with fewer bits compared to a system information block type 1.

28. The base station of claim 19, wherein, The second system information update notification is communicated via at least one of: a same downlink control information that communicates the first system information update notification, a different downlink control information than a downlink control information that communicates the first system information update notification, a physical downlink shared channel message, or a radio network temporary identifier. Paging physical downlink shared channel message.

29. A method of wireless communication performed by a base station, comprising: generating a first system information update notification and a second system information update notification, wherein the first system information update notification includes information associated with decoding the second system information update notification, and wherein the second system information update notification is associated with identifying one or more system information blocks to be updated; transmitting the first system information update notification and the second system information update notification to trigger an update of the one or more system information blocks; and transmitting the one or more system information blocks.

30. The method of claim 29, wherein, the first system information update notification is decodable by a first type of UE configured with a particular capability related to the one or more system information blocks and a second type of UE not configured with the particular capability, wherein the second system information update notification is decodable by the first type of UE to trigger the update of the one or more system information blocks and not decodable by the second type of UE.

31. A computer program product comprising computer readable instructions, which, when executed by a processor, cause the processor to perform the method of any of claims 10-18.

32. A computer program product comprising computer readable instructions, which, when executed by a processor, cause the processor to perform the method of any of claims 29-30.

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