Alternative size of downlink control information message used to schedule the remaining minimum system information transmission

Abstract

In general, various aspects of the present disclosure relate to wireless communications. In some aspects, a user equipment may receive, via a physical broadcast channel message, an indication to attempt to decode a downlink control information (DCI) message scheduling a remaining minimum system information (RMSI) transmission based at least in part on an assumption of an alternative size different from a default size; and receive the RMSI transmission based at least in part on the DCI message. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 009,33, filed on April 13, 2020, entitled “ALTERNATIVELY SIZED DOWNLINK CONTROL INFORMATION MESSAGES FOR SCHEDULING REMAINING MINIMUM SYSTEM INFORMATION TRANSMISSIONS,” and U.S. Non-Provisional Patent Application No. 17 / 221,290, filed on April 2, 2021, entitled “ALTERNATIVELY SIZED DOWNLINK CONTROL INFORMATION MESSAGES FOR SCHEDULING REMAINING MINIMUM SYSTEM INFORMATION TRANSMISSIONS,” the contents of which are hereby expressly incorporated herein by reference. Technical Field

[0003]

[0006] Aspects of the present disclosure generally relate to wireless communications and to techniques and apparatus for alternative sizes of downlink control information messages used to schedule remaining minimum system information transmissions. Background Art

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

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

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

[0007] In some aspects, a method of wireless communication performed by a user equipment may include: receiving, via a physical broadcast channel (PBCH) message, an indication to attempt to decode a downlink control information (DCI) message scheduling a remaining minimum system information (RMSI) transmission based at least in part on an assumption of an alternative size different from a default size; and receiving the RMSI transmission based at least in part on the DCI message.

[0008] In some aspects, a method of wireless communication performed by a base station may include: sending an indication via a PBCH message about attempting to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different from a default size; and sending the RMSI transmission based at least in part on the DCI message.

[0009] In some aspects, a user equipment for wireless communication may include a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to: receive, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different than a default size; and receive the RMSI transmission based at least in part on the DCI message.

[0010] In some aspects, a base station for wireless communication may include a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to: send, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different than a default size; and send the RMSI transmission based at least in part on the DCI message.

[0011] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: receive, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different than a default size; and receive the RMSI transmission based at least in part on the DCI message.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: send, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different than a default size; and send the RMSI transmission based at least in part on the DCI message.

[0013] In some aspects, an apparatus for wireless communication may include: means for receiving, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different than a default size; and means for receiving the RMSI transmission based at least in part on the DCI message.

[0014] In some aspects, an apparatus for wireless communication may include: means for sending, via a PBCH message, an indication of attempting to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different than a default size; and means for sending the RMSI transmission based at least in part on the DCI message.

[0015] In summary, aspects include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as generally described herein with reference to and as illustrated by the figures and description.

[0016] The foregoing has outlined quite broadly the features and technical advantages of the examples according to the present disclosure so that the specific embodiments below may be better understood. Additional features and advantages will be described below. The concepts disclosed and the specific examples may be readily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood from the description below when considered in conjunction with the accompanying drawings. Each of the figures in the drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0017] Although various aspects are described in this application by the explanation of some examples, it will be understood by those skilled in the art that such aspects can be realized in many different arrangements and scenarios. Different platform types, devices, systems, shapes, sizes and / or packaging arrangements can be used to realize the technology described herein. For example, some aspects can be realized via integrated chip embodiments and other devices based on non-module components (for example, end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment or devices supporting artificial intelligence). Various aspects can be realized in chip-level components, modular components, non-modular components, non-chip-level components, device-level components or system-level components. The equipment incorporated with the described aspects and features may include additional components and features for the implementation and practice of the aspects claimed and described. For example, the transmission and reception of wireless signals may include multiple components for analog and digital purposes (for example, hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders or summers). The aspects described herein are intended to be practiced in various devices, chip-level components, systems, distributed arrangements or end-user devices with different sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] A more detailed description of the invention briefly summarized above can be obtained by reference to various aspects (some of which are shown in the accompanying drawings) so that the above-mentioned features of the present disclosure can be understood in detail. However, it should be noted that the drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope of the present disclosure, as the description may admit of other equally effective aspects. The same reference numerals in different figures may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a base station and a UE in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example of broadcasting a configuration of a search space for remaining minimum system information physical downlink control channel transmission and broadcasting a downlink control information message scheduling the remaining minimum system information according to the present disclosure.

[0022] Figure 4 is a diagram illustrating examples of alternative sizes of downlink control information messages for scheduling remaining minimum system information transmissions configured in accordance with the present disclosure.

[0023] Figure 5 is a diagram illustrating an example process performed, for example, by a user device, according to the present disclosure.

[0024] Figure 6 is a diagram illustrating an example process performed, for example, by a base station according to the present disclosure. DETAILED DESCRIPTION

[0025] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. More precisely, these aspects are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should recognize that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether that aspect is implemented independently of any other aspect of the disclosure or implemented in combination with any other aspect. For example, using any number of aspects set forth herein, a device can be implemented or a method can be practiced. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using other structures, functions, or structures and functions other than or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of the claims.

[0026] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by means of various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] It should be noted that although various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0028] Figure 1is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, among others. The wireless network 100 may include a plurality of base stations 110 (illustrated as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), and the like. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0029] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in FIG, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0030] In some aspects, cells may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile BS. In some aspects, BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in wireless network 100 via various types of backhaul interfaces (e.g., direct physical connections using any suitable transport network or virtual networks).

[0031] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. Figure 1 In the example shown in , relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, relay, etc.

[0032] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0033] The network controller 130 may be coupled to a group of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate directly or indirectly with each other via a wireless or wired backhaul.

[0034] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or apparatus, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music or video device, or a satellite radio unit, etc.), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0035] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120 (such as a processor component and / or a memory component). In some aspects, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0036] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0037] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols), mesh networks. In this case, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0038] Devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, devices of the wireless network 100 can communicate using an operating band having a first frequency range (FR1) (which can span from 410 MHz to 7.125 GHz) and / or can communicate using an operating band having a second frequency range (FR2) (which can span from 24.25 GHz to 52.6 GHz). Frequencies between FR1 and FR2 are sometimes referred to as intermediate frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is often referred to as a "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Thus, unless expressly stated otherwise, it should be understood that the terms “sub-6 GHz,” etc., if used herein, may broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or intermediate frequencies (e.g., greater than 7.125 GHz). Similarly, unless expressly stated otherwise, it should be understood that the terms “millimeter wave,” etc., if used herein, may broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0039] As pointed out above, Figure 1 is provided as an example. Other examples may differ from those described in relation to Figure 1 Examples described.

[0040] Figure 2 is a diagram illustrating an example of base station 110 communicating with UE 120 in wireless network 100 according to the present disclosure. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general, T≥1 and R≥1.

[0041] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and frequency upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0042] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a channel quality indicator (CQI) parameter, etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0043] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0044] The antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or may be included within one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, etc. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmitting and / or receiving components (such as Figure 2 One or more antenna elements of one or more components).

[0045] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any method described herein (e.g., as described with reference to FIG. Figure 3-6 description).

[0046] At base station 110, uplink signals from UE 120 and other UEs may be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in a modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any method described herein (e.g., as described with reference to FIG. Figure 3-6 description).

[0047] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in the may perform one or more techniques associated with alternative sizes of DCI messages for scheduling RMSI transmissions, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in may perform or direct e.g. Figure 5 The process of 500 Figure 6 600 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communications. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of base station 110 and / or UE 120, may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example, Figure 5 The process of 500 Figure 6 The operations of process 600 and / or other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0048] In some aspects, the UE includes: means for receiving, via a physical broadcast channel message, an indication of blind detection of a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternative size different from a default size; and / or means for receiving an RMSI transmission based at least in part on the DCI message. The means used by the UE to perform the operations described herein may include, for example, one or more of the antenna 252, the demodulator 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the modulator 254, the controller / processor 280, or the memory 282.

[0049] In some aspects, the UE includes means for receiving an indication of a scheduled channel state information reference signal (CSI-RS), wherein the indication of the scheduled CSI-RS is an implicit indication for blind detection of a DCI message based at least in part on an assumption of an alternative size.

[0050] In some aspects, a UE comprises means for establishing a wireless link with a base station based at least in part on a RMSI transmission.

[0051] In some aspects, the base station includes: means for transmitting, via a physical broadcast channel message, an indication of attempting to decode a downlink control information (DCI) message scheduling a transmission of remaining minimum system information (RMSI) based at least in part on an assumption of an alternative size different from a default size; and / or means for transmitting an RMSI transmission based at least in part on the DCI message. The means used by the base station to perform the operations described herein may include, for example, one or more of the transmit processor 220, the TX MIMO processor 230, the modulator 232, the antenna 234, the demodulator 232, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0052] In some aspects, a base station includes means for sending an indication of a scheduled CSI-RS, wherein the indication of a scheduled CSI-RS is an implicit indication to attempt to decode a DCI message based at least in part on an assumption of an alternative size.

[0053] In some aspects, a base station comprises means for establishing a wireless link with a UE based at least in part on a RMSI transmission.

[0054] Although Figure 2 The blocks in FIG. 2 are shown as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0055] As pointed out above, Figure 2 is provided as an example. Other examples may differ from those described in relation to Figure 2 Examples described.

[0056] Figure 3 FIG3 is a diagram illustrating an example 300 of broadcasting a configuration of a search space for RMSI physical downlink control channel (PDCCH) transmission and broadcasting a DCI message scheduling RMSI according to the present disclosure. Figure 3 As shown, the UE may attempt to access a network associated with the base station. The UE may be configured to perform one or more actions to gain access to the network.

[0057] As shown in the reference numeral 305, the base station may broadcast system information via a physical broadcast channel (PBCH) to configure the search space for RMSI PDCCH transmission. For example, the base station may send (e.g., broadcast) system information (e.g., master information block (MIB), synchronization signal block (SSB), etc.) via the PBCH using physical layer information indicating how to receive further system information. The physical layer indication may identify the search space used for the PDCCH (e.g., Type 0-PDCCH common search space). In other words, the base station may broadcast system information via the PBCH that indicates to one or more UEs how to obtain further system information (e.g., a DCI message scheduling RMSI).

[0058] As shown in reference numeral 310, the base station may broadcast a DCI message (e.g., an RMSI PDCCH transmission) that schedules RMSI based at least in part on system information. However, the base station may be configured to transmit the DCI message within a control resource set (e.g., CORESET) using a limited number of symbols (e.g., 2 symbols, 3 symbols, etc.). This may limit the amount of gain that can be achieved via repetition of the DCI message. In addition, the base station may transmit the DCI message using a wide beam (e.g., an omni-directional beam, a pseudo-omni-directional beam, etc.) that may not provide sufficient gain to reach a UE (e.g., a UE near the outer edge of the base station's coverage area).

[0059] As indicated by reference numeral 315, the UE may attempt to receive a DCI message scheduling RMSI based at least in part on the system information. However, based at least in part on the limited coverage of the DCI message, the UE may fail to receive the DCI message. This may result in the UE failing to receive the RMSI that the UE will use to establish a radio link with the base station. Based at least in part on the UE's failure to receive the DCI and / or RMSI, the UE may wait for another PBCH opportunity and attempt to receive the DCI message again. This may consume computing, communication, and / or network resources for the UE to repeatedly attempt and fail to establish a radio link with the base station.

[0060] As pointed out above, Figure 3 is provided as an example. Other examples may differ from those described in relation to Figure 3 Examples described.

[0061] In some aspects described herein, a base station may determine to use an alternative size (e.g., a compact size) to send a DCI message scheduling an RMSI transmission. The alternative size may be smaller than a default size (e.g., a fallback DCI size) that a DCI message scheduling an RMSI transmission may typically use. For example, the default DCI size may be 40 bits, and the alternative size may be 24 bits. In some networks, the base station may be configured to typically use the default size for DCI messages, based at least in part on the base station being configured to communicate with legacy devices that are configured to receive only DCI messages of the default size.

[0062] The base station may send (e.g., in system information broadcast via the PBCH) an indication that the UE will attempt to decode the DCI message that schedules the RMSI based at least in part on an alternative size assumption. The UE may attempt to receive the DCI message (e.g., within a search space configured via the system information) by attempting to decode the DCI message using the alternative size assumption, using the alternative size assumption and additionally using a default size assumption, etc. The UE may then receive the RMSI based at least in part on the DCI message that schedules the RMSI.

[0063] Based at least in part on the base station indicating (e.g., via the PBCH) that the UE will attempt to decode the DCI message based at least in part on an assumption of an alternative size, the base station may send a DCI message with an alternative size, which may improve the coverage of the transmission of the DCI message. For example, a DCI message may be sent using 24 bits instead of 40 bits, which may increase the signal strength by 1 dB when the signal is transmitted using the same number of symbols. This may improve the likelihood that the UE will receive the DCI message (e.g., relative to using a default size) and receive the RMSI to configure the UE for establishing a radio link with the base station. In this way, the UE may save computational, communication, and / or network resources that might otherwise be used to repeatedly attempt and fail to establish a radio link with the base station.

[0064] Figure 4 4 is a diagram illustrating an example 400 of alternative sizes of DCI messages configured for scheduling RMSI transmissions according to the present disclosure. Figure 4 As shown, a UE (e.g., UE 120) can receive a transmission (e.g., broadcast information) from a base station (e.g., base station 110). The UE can attempt to establish a wireless link with the base station to gain access to a wireless network (e.g., wireless network 100). In some aspects, the wireless link can be associated with a frequency range (e.g., FR2 or higher), a 5G RAT, a RAT associated with a directional beam, etc. In some aspects, the UE can be near the outer boundary of the coverage area of ​​the base station.

[0065] like Figure 4 And indicated by reference numeral 405, the UE may configure the UE. In some aspects, the UE may be configured based at least in part on configuration information received prior to attempting initial access with the base station (e.g., from another base station, via another network, via pre-configuration data, etc.). In some aspects, the UE may be configured to communicate based at least in part on one or more radio access technology (RAT) standards.

[0066] In some aspects, a UE may be configured to attempt to decode a DCI message that schedules an RMSI transmission based at least in part on an assumption of a default size (e.g., a fallback size) for the DCI message. In some aspects, the UE may be configured to attempt to decode a DCI message that schedules an RMSI transmission based at least in part on an assumption of an alternate size, the alternate size assumption being based at least in part on one or more conditions. For example, the UE may be configured to attempt to decode a DCI message that schedules an RMSI transmission based at least in part on an assumption of an alternate size based at least in part on a received indication (e.g., an explicit indication, an implicit indication, etc.), the location of the UE, a frequency associated with downlink transmissions by a base station, etc.

[0067] In some aspects, a UE may be configured with one or more sizes and / or configurations of DCI messages having alternative sizes. In some aspects, the size or configuration may be based at least in part on the RAT standard, the frequency associated with the DCI message (e.g., based at least in part on the frequency of the associated PBCH transmission, the indication of the PBCH transmission, the scheduling of the transmission of the Channel State Information Reference Signal (CSI-RS), etc.), etc.

[0068] As indicated by reference numeral 410, a base station may determine to send a DCI message of an alternative size that schedules an RMSI transmission. In some aspects, the base station may determine to send a DCI message of an alternative size based at least in part on a RAT standard associated with the DCI message. In some aspects, the base station may determine to send a DCI message of an alternative size based at least in part on the results of a previous PBCH transmission. For example, the base station may determine to send a DCI message of an alternative size based at least in part on an uplink transmission associated with a previous opportunity indicating that one or more UEs are near an outer boundary of a coverage area of ​​the base station. In some aspects, the base station may determine to send a DCI message of an alternative size based at least in part on received power of uplink transmissions from one or more connected UEs. For example, the base station may determine to send a DCI message of an alternative size based at least in part on one or more RSRP measurements. In some aspects, the base station may be configured to send some or all DCI messages of an alternative size based at least in part on a deployment configuration of the base station. For example, if the network is configured such that if transmitted using the default size, the base station will provide coverage for one or more UEs outside the range of the DCI message, the network may send some or all DCI messages scheduling RMSI transmissions with an alternative size.

[0069] In some aspects, the base station may determine the size or configuration of the DCI message having the alternative size based at least in part on a RAT standard associated with the DCI message, a frequency associated with the DCI message, and / or the like.

[0070] As indicated by reference numeral 415, the base station may send, and the UE may receive, an indication of using an alternative size assumption to attempt to decode a DCI message scheduling an RMSI transmission. In some aspects, the UE may receive the indication via a PBCH message. In some aspects, the PBCH message may include a single bit indication that the DCI message may have an alternative size or that the DCI message will have an alternative size. For example, the PBCH message may include a 1-bit flag indicating an alternative size for the DCI or the likelihood of an alternative size for the DCI (e.g., to be used by the UE or blind detection of the DCI).

[0071] In some aspects, a PBCH message may use one or more bit fields (e.g., for the configuration of a CORESET (CORESET0)) to indicate that a DCI message may have an alternative size or that a DCI message will have an alternative size. For example, a PBCH message may include one or more bits to indicate the configuration of a CORESET. The configuration of a CORESET may be associated with attempting to decode one or more DCI messages based at least in part on an assumption of the alternative size. For example, a column may be added to one or more configuration tables for PDCCH monitoring opportunities for Type 0-PDCCH common search space (e.g., tables for synchronization signal PBCH blocks (SSBs) and / or CORESET multiplexing mode 1 and frequency range 2) to indicate that an alternative size of DCI may be used.

[0072] In some aspects, the UE may receive an indication implicitly via one or more other transmissions. For example, a repetition of a DCI message and / or an indication of CSI-RS scheduling preceding the DCI message (via, for example, the PBCH) may implicitly indicate that the UE will attempt to receive the DCI message based at least in part on an assumption of an alternate size.

[0073] As indicated by reference numeral 420, the UE may monitor a search space for DCI messages based at least in part on an assumption of an alternate size. For example, the UE may monitor the search space for DCI messages based at least in part on receiving an explicit or implicit indication that an alternate size may be used or will be used for a DCI message scheduling an RMSI transmission using the assumption of the alternate size. In some aspects, the UE may perform blind detection within the search space, where the UE attempts to decode an expected DCI message within the search space based at least in part on the assumption of the alternate size and (e.g., simultaneously) based at least in part on an assumption of a standard size for the DCI message.

[0074] The base station may send, and the UE may receive, the DCI message, as indicated by reference numeral 425. In some aspects, the base station may send, during some PBCH opportunities, DCI messages that schedule RMSI transmissions using a default size, and may send, during other PBCH opportunities, DCI messages that schedule RMSI transmissions using an alternate size.

[0075] In some aspects, a DCI message may include one or more repetitions of an indication of resources used for RMSI transmission. Based at least in part on the base station sending the DCI message using one or more repetitions of the indication of resources used for RMSI transmission, the UE may have an increased likelihood of receiving the indication of resources used for RMSI transmission (e.g., compared to only a single instance of RMSI).

[0076] As indicated by reference numeral 430, the UE may identify resources scheduled for RMSI transmission. In some aspects, the resources scheduled for RMSI transmission may be located within a physical downlink shared channel (PDSCH). In some aspects, the UE may identify the resources for RMSI transmission based at least in part on the UE receiving a DCI message (e.g., based at least in part on extended coverage of a DCI message sent using an alternate size). The UE may monitor the resources for RMSI transmission and decode the RMSI transmission.

[0077] As indicated by reference numeral 435, the base station may transmit and the UE may receive an RMSI transmission. In some aspects, the RMSI may include information provided by the base station for the UE to access the cell. For example, the RMSI may identify random access parameters, information for receiving additional system information (e.g., via an additional system information block (SIB)), a physical random access channel configuration for requesting system information, radio resource configuration information, etc. In some aspects, the UE may use information from the PBCH to decode the RMSI transmission.

[0078] As indicated by reference numeral 440, the UE may configure the UE for an initial access procedure based at least in part on the RMSI. For example, the UE may use system information obtained from the RMSI to receive additional system information, configure the UE to perform a physical random access channel procedure to request system information, etc. In some aspects, the UE may use the RMSI to determine (e.g., select) a random access procedure to attempt to gain access to a cell of a network provided by a base station.

[0079] As shown in reference numeral 445, the UE may establish a wireless link with the base station. For example, the UE may complete a random access procedure to establish a wireless link with the base station. In some aspects, the UE and the base station may communicate via directional beams to improve coverage of uplink and / or downlink transmissions.

[0080] Based at least in part on the base station indicating (e.g., via the PBCH) that the UE will attempt to decode the DCI message based at least in part on an assumption of an alternative size, the UE can be configured to attempt to receive the DCI message with the assumption of the alternative size. The base station can then send the DCI message with the alternative size, which can improve the coverage area of ​​the transmission of the DCI message that schedules the RMSI transmission. This can improve the likelihood that the UE receives the DCI message (e.g., relative to using a default size) and that the UE receives the RMSI to configure the UE for establishing a radio link with the base station. In this way, the UE can save computing, communication, and / or network resources that might otherwise be used to repeatedly attempt and fail to establish a radio link with the base station based at least in part on the UE being near an outer boundary of the coverage area of ​​the base station.

[0081] As pointed out above, Figure 4 is provided as an example. Other examples may differ from those described in relation to Figure 4 Examples described.

[0082] Figure 5 is a diagram illustrating an example process 500, performed, for example, by a UE, according to the present disclosure. Example process 500 is an example of operations in which a UE (eg, UE 120, etc.) performs operations associated with alternate sizes of DCI for scheduling RMSI transmissions.

[0083] like Figure 5 As shown, in some aspects, process 500 may include receiving, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternate size different from a default size (block 510). For example, a UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, etc.) may receive, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternate size different from a default size, as described above, for example, with reference to Figure 4 described.

[0084] like Figure 5 As further shown, in some aspects, process 500 may include receiving an RMSI transmission based at least in part on the DCI message (block 520). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, etc.) may receive the RMSI transmission based at least in part on the DCI message, as described above, for example, with reference to FIG. Figure 4 described.

[0085] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0086] In the first aspect, the indication via the PBCH message comprises a single bit indication that the DCI message may have the alternative size, or a single bit indication that the DCI message will have the alternative size.

[0087] In a second aspect, alone or in combination with the first aspect, the indication via the PBCH message comprises: one or more bits for indicating a configuration of a CORESET.

[0088] In a third aspect, alone or in combination with one or more of the first and second aspects, the configuring of the CORESET is associated with attempting to decode one or more DCI messages based at least in part on the assumption of the surrogate size.

[0089] In a fourth aspect, alone or in combination with one or more of the first to third aspects, one or more of a size or a configuration of the DCI message having the alternative size is based at least in part on a RAT standard.

[0090] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, one or more of the size or configuration of the DCI message having the alternative size is based at least in part on a frequency associated with the DCI message.

[0091] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the DCI message includes one or more repetitions of an indication of resources used for the RMSI transmission.

[0092] In a seventh aspect, alone or in combination with one or more of aspects one to six, receiving the indication to attempt to decode the DCI message based at least in part on the assumption of the alternative size comprises receiving an indication to schedule the CSI-RS, the indication to schedule the CSI-RS being an implicit indication to attempt to decode the DCI message based at least in part on the assumption of the alternative size.

[0093] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, the indication of attempting to decode the DCI message based at least in part on the assumption of the alternative size is used to indicate a possibility of using the alternative size for the DCI message, and the UE will attempt to receive the DCI message based at least in part on the assumption of the alternative size, and the UE will attempt to receive the DCI message based at least in part on the assumption of the standard size of the DCI message.

[0094] In a ninth aspect, alone or in combination with one or more of aspects one to eight, the indication of attempting to decode the DCI message based at least in part on the assumption of the alternative size is used to indicate that the DCI message will have the alternative size.

[0095] Although Figure 5 Example blocks of process 500 are shown, but in some aspects, process 500 may include Figure 5The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 500. Additionally or alternatively, two or more blocks of the blocks in process 500 may be executed in parallel.

[0096] Figure 6 is a diagram illustrating an example process 600, for example, performed by a base station, according to the present disclosure. Example process 600 is an example of operations in which a base station (eg, base station 110, etc.) performs operations associated with alternative sizes of DCI messages for scheduling RMSI transmissions.

[0097] like Figure 6 As shown, in some aspects, process 600 may include sending, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternate size different from a default size (block 610). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, memory 242, etc.) may send, via a PBCH message, an indication to attempt to decode a DCI message scheduling an RMSI transmission based at least in part on an assumption of an alternate size different from a default size, as described above, for example, with reference to Figure 4 described.

[0098] like Figure 6 As further shown, in some aspects, process 600 may include sending an RMSI transmission based at least in part on the DCI message (block 620). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, memory 242, etc.) may send an RMSI transmission based at least in part on the DCI message, as described above, for example, with reference to Figure 4 described.

[0099] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0100] In the first aspect, the indication via the PBCH message comprises a single bit indication that the DCI message may have the alternative size, or a single bit indication that the DCI message will have the alternative size.

[0101] In a second aspect, alone or in combination with the first aspect, the indication via the PBCH message comprises: one or more bits for indicating a configuration of a CORESET.

[0102] In a third aspect, alone or in combination with one or more of the first and second aspects, the configuring of the CORESET is associated with attempting to decode one or more DCI messages based at least in part on the assumption of the surrogate size.

[0103] In a fourth aspect, alone or in combination with one or more of the first to third aspects, one or more of a size or a configuration of the DCI message having the alternative size is based at least in part on a RAT standard.

[0104] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, one or more of the size or configuration of the DCI message having the alternative size is based at least in part on a frequency associated with the DCI message.

[0105] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the DCI message includes one or more repetitions of an indication of resources used for the RMSI transmission.

[0106] In a seventh aspect, alone or in combination with one or more of aspects one to six, sending the indication about attempting to decode the DCI message based at least in part on the assumption of the alternative size comprises sending an indication of scheduling CSI-RS, wherein the indication of scheduling the CSI-RS is an implicit indication about attempting to decode the DCI message based at least in part on the assumption of the alternative size.

[0107] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, the indication of attempting to decode the DCI message based at least in part on the assumption of the alternative size is used to indicate a possibility of using the alternative size for the DCI message, and the UE receiving the indication will attempt to receive the DCI message based at least in part on the assumption of the alternative size, and the UE will attempt to receive the DCI message based at least in part on the assumption of the standard size of the DCI message.

[0108] In a ninth aspect, alone or in combination with one or more of aspects one to eight, the indication of attempting to decode the DCI message based at least in part on the assumption of the alternative size is used to indicate that the DCI message will have the alternative size.

[0109] Although Figure 6 Example blocks of process 600 are shown, but in some aspects process 600 may include Figure 6The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 600. Additionally or alternatively, two or more blocks of the blocks in process 600 may be executed in parallel.

[0110] The following provides an overview of some aspects of the disclosure:

[0111] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: receiving, via a physical broadcast channel message, an indication of blind detection of a downlink control information (DCI) message that schedules a remaining minimum system information (RMSI) transmission based at least in part on an assumption of an alternative size different from a default size; and receiving the RMSI transmission based at least in part on the DCI message.

[0112] Aspect 2: The method according to aspect 1, wherein the indication via the physical broadcast channel message includes: a single bit indication that the DCI message can have the alternative size, or a single bit indication that the DCI message will have the alternative size.

[0113] Aspect 3: The method according to any of aspects 1-3, wherein the indication via the physical broadcast channel message includes one or more bits for indicating the configuration of the CORESET.

[0114] Aspect 4: The method of aspect 3, wherein the configuration of the CORESET is associated with blind detection of one or more DCI messages based at least in part on the assumption of the surrogate size.

[0115] Aspect 5: The method according to any of aspects 1-4, wherein one or more of the size or configuration of the DCI message having the alternative size is based at least in part on a radio access technology (RAT) standard.

[0116] Aspect 6: A method according to any of aspects 1-5, wherein one or more of the size or configuration of the DCI message having the alternative size is based at least in part on one or more of the following: a frequency range or band associated with the DCI message having the alternative size, or a frequency allocation of a CORESET associated with the DCI message having the alternative size.

[0117] Aspect 7: The method according to any of aspects 1-6, wherein the DCI message includes one or more repetitions of the indication of resources used for the RMSI transmission.

[0118] Aspect 8: A method according to any of Aspects 1-7, wherein receiving the indication for blind detection of the DCI message based at least in part on the assumption of the alternative size includes: receiving an indication for scheduling a channel state information reference signal (CSI-RS), wherein the indication for scheduling the CSI-RS is an implicit indication for blind detection of the DCI message based at least in part on the assumption of the alternative size.

[0119] Aspect 9: A method according to any of Aspects 1-8, wherein receiving an indication for blind detection of the DCI message based at least in part on the assumption of the alternative size includes: receiving an indication of scheduling a channel state information reference signal (CSI-RS).

[0120] Aspect 10: A method according to any of Aspects 1-9, wherein the indication of blind detection of the DCI message based at least in part on the assumption of the alternative size is used to indicate the possibility of using the alternative size for the DCI message, and wherein the UE will attempt to receive the DCI message based at least in part on the assumption of the alternative size, and the UE will attempt to receive the DCI message based at least in part on the assumption of the standard size of the DCI message.

[0121] Aspect 11: The method according to any of aspects 1-10, wherein the indication of blindly detecting the DCI message based at least in part on the assumption of the alternative size is used to indicate that the DCI message will have the alternative size.

[0122] Aspect 12: A method of wireless communication performed by a base station, comprising: sending an indication via a physical broadcast channel message about attempting to decode a downlink control information (DCI) message that schedules a remaining minimum system information (RMSI) transmission based at least in part on an assumption of an alternative size that is different from a default size; and sending the RMSI transmission based at least in part on the DCI message.

[0123] Aspect 13: The method according to aspect 12, wherein the indication via the physical broadcast channel message includes: a single bit indication that the DCI message can have the alternative size, or a single bit indication that the DCI message will have the alternative size.

[0124] Aspect 14: The method according to any of aspects 12-13, wherein the indication via the physical broadcast channel message comprises one or more bits for indicating the configuration of a CORESET.

[0125] Aspect 15: The method of aspect 14, wherein the configuration of the CORESET is associated with blind detection of one or more DCI messages based at least in part on the assumption of the surrogate size.

[0126] Aspect 16: The method according to any of aspects 12-15, wherein one or more of the size or configuration of the DCI message having the alternative size is based at least in part on a radio access technology (RAT) standard.

[0127] Aspect 17: A method according to any of aspects 12-16, wherein one or more of the size or configuration of the DCI message having the alternative size is based at least in part on one or more of the following: a frequency range or band associated with the DCI message having the alternative size, or a frequency allocation of a CORESET associated with the DCI message having the alternative size.

[0128] Aspect 18: The method according to any of aspects 12-17, wherein the DCI message includes one or more repetitions of the indication of resources used for the RMSI transmission.

[0129] Aspect 19: A method according to any of Aspects 12-18, wherein sending an indication of blind detection of the DCI message based at least in part on the assumption of the alternative size includes: sending an indication of scheduling a channel state information reference signal (CSI-RS), wherein the indication of scheduling the CSI-RS is an implicit indication of blind detection of the DCI message based at least in part on the assumption of the alternative size.

[0130] Aspect 20: The method of any of aspects 12-19, wherein sending an indication of blind detection of the DCI message based at least in part on the assumption of the substitute size comprises sending an indication of a scheduled channel state information reference signal (CSI-RS).

[0131] Aspect 21: A method according to any of Aspects 12-20, wherein the indication of blind detection of the DCI message based at least in part on the assumption of the alternative size is used to indicate the possibility of using the alternative size for the DCI message, and wherein a user equipment (UE) will attempt to receive the DCI message based at least in part on the assumption of the alternative size, and the UE will attempt to receive the DCI message based at least in part on the assumption of the standard size of the DCI message.

[0132] Aspect 22: The method according to any of aspects 12-21, wherein the indication of blindly detecting the DCI message based at least in part on the assumption of the alternative size is used to indicate that the DCI message will have the alternative size.

[0133] 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 the method according to one or more of aspects 1-22.

[0134] Aspect 24: An apparatus for wireless communication, comprising a memory, and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method according to one or more of aspects 1-22.

[0135] Aspect 25: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of aspects 1-22.

[0136] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1-22.

[0137] Aspect 27: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1-22.

[0138] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

[0139] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Regardless of being referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions, etc. As used herein, a processor is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented with a combination of hardware and / or hardware and software in various forms. The actual specialized control hardware or software code used to implement these systems and / or methods is not intended to limit various aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without citing specific software codes. It is to be understood that software and hardware can be designed to implement the systems and / or methods at least in part based on the description herein.

[0140] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0141] Even if the specific combination of feature is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many features in these features can be combined in a manner not specifically recorded in the claims and / or specifically disclosed in the specification. Although each dependent claim listed below can only be directly subordinate to a claim, the disclosure of various aspects includes the combination of each dependent claim and each other claim in the claim set. As used herein, the phrase of "at least one of" referring to a list of items refers to any combination of those items, including single members. For example, "at least one of a, b or c" is intended to cover a, b, c, ab, ac, bc and abc, and with any combination of the multiple of the same element (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other sorting of a, b and c).

[0142] In the elements, actions or instructions used herein, none should be interpreted as key or necessary, unless clearly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more projects, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more projects quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (for example, related projects, unrelated projects, or the combination of related projects and unrelated projects), and can be used interchangeably with "one or more". In the case of only expecting a project, phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms. In addition, unless otherwise clearly stated, phrase "based on" is intended to mean "at least partially based on". Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and can be used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A method of wireless communication performed by a user equipment (UE), comprising: receiving, via a physical broadcast channel message, an indication to blindly detect a downlink control information (DCI) message scheduling a transmission of remaining minimum system information (RMSI) based at least in part on an assumption of an alternate size different than a default size; Wherein one or more of a size or a configuration of the DCI message having the alternative size is based at least in part on one or more of: a frequency range or band associated with said DCI message having said alternative size, or a frequency allocation of a CORESET associated with the DCI message having the alternative size; and The RMSI transmission is received based at least in part on the DCI message.

2. The method according to claim 1, wherein The indication via the physical broadcast channel message includes: a single bit indication that the DCI message can have the alternative size, or There will be a single bit indication of the alternative size for the DCI message.

3. The method according to claim 1, wherein The indication via the physical broadcast channel message includes one or more bits for indicating a configuration of a CORESET.

4. The method according to claim 3, wherein: The configuration of the CORESET is associated with blind detection of one or more DCI messages based at least in part on the assumption of the surrogate size.

5. The method according to claim 1, wherein One or more of the size or configuration of the DCI message having the alternative size is also based at least in part on a radio access technology (RAT) standard.

6. The method according to claim 1, wherein The DCI message includes one or more repetitions of an indication of resources used for transmission of the RMSI.

7. The method according to claim 1, wherein Receiving the indication to blindly detect the DCI message based at least in part on the assumption of the surrogate size comprises: receiving an indication of a scheduling channel state information reference signal (CSI-RS), The indication of scheduling the CSI-RS is an implicit indication for blind detection of the DCI message based at least in part on the assumption of the alternative size.

8. The method according to claim 1, wherein Receiving the indication to blindly detect the DCI message based at least in part on the assumption of the surrogate size comprises: An indication of a scheduled channel state information reference signal (CSI-RS) is received.

9. The method according to claim 1, wherein: The indication for blindly detecting the DCI message based at least in part on the assumption of the alternative size is for indicating a likelihood of using the alternative size for the DCI message, and wherein the UE will attempt to receive the DCI message based at least in part on the assumption of the alternative size, and wherein the UE will attempt to receive the DCI message based at least in part on the assumption of a standard size for DCI messages.

10. The method according to claim 1, wherein The indication for blindly detecting the DCI message based at least in part on the assumption of the alternative size indicates that the DCI message will have the alternative size.

11. A method of wireless communication performed by a base station, comprising: sending, via a physical broadcast channel message, an indication to attempt to decode a downlink control information (DCI) message scheduling a remaining minimum system information (RMSI) transmission based at least in part on an assumption of an alternate size different than a default size; Wherein one or more of a size or a configuration of the DCI message having the alternative size is based at least in part on one or more of: a frequency range or band associated with said DCI message having said alternative size, or a frequency allocation of a CORESET associated with the DCI message having the alternative size; and The RMSI transmission is sent based at least in part on the DCI message.

12. The method according to claim 11, wherein The indication via the physical broadcast channel message includes: a single bit indication that the DCI message can have the alternative size, or There will be a single bit indication of the alternative size for the DCI message.

13. The method according to claim 11, wherein The indication via the physical broadcast channel message includes one or more bits for indicating a configuration of a CORESET.

14. The method according to claim 13, wherein The configuration of the CORESET is associated with blind detection of one or more DCI messages based at least in part on the assumption of the surrogate size.

15. The method according to claim 11, wherein One or more of the size or configuration of the DCI message having the alternative size is also based at least in part on a radio access technology (RAT) standard.

16. The method according to claim 11, wherein The DCI message includes one or more repetitions of an indication of resources used for transmission of the RMSI.

17. The method according to claim 11, wherein Sending the indication for blind detection of the DCI message based at least in part on the assumption of the surrogate size comprises: Send an indication of scheduling a channel state information reference signal (CSI-RS), The indication of scheduling the CSI-RS is an implicit indication for blind detection of the DCI message based at least in part on the assumption of the alternative size.

18. The method according to claim 11, wherein Sending the indication for blind detection of the DCI message based at least in part on the assumption of the surrogate size comprises: Send an indication of scheduling a Channel State Information Reference Signal (CSI-RS).

19. The method according to claim 11, wherein The indication for blindly detecting the DCI message based at least in part on the assumption of the alternative size is for indicating a likelihood of using the alternative size for the DCI message, and Wherein a user equipment (UE) will attempt to receive the DCI message based at least in part on the assumption of the alternative size, and the UE will attempt to receive the DCI message based at least in part on the assumption of a standard size for DCI messages.

20. The method according to claim 11, wherein The indication for blindly detecting the DCI message based at least in part on the assumption of the alternative size indicates that the DCI message will have the alternative size.

21. A user equipment (UE) for wireless communication, comprising: Memory; transceiver; as well as one or more processors coupled to the memory, the memory and the one or more processors being configured to: receiving, using the transceiver, via a physical broadcast channel message, an indication to attempt to decode a downlink control information (DCI) message scheduling a transmission of remaining minimum system information (RMSI) based at least in part on an assumption of an alternate size different than a default size; Wherein one or more of a size or a configuration of the DCI message having the alternative size is based at least in part on one or more of: a frequency range or band associated with said DCI message having said alternative size, or a frequency allocation of a CORESET associated with the DCI message having the alternative size; as well as The RMSI transmission is received using the transceiver based at least in part on the DCI message.

22. The UE according to claim 21, wherein: The indication via the physical broadcast channel message includes: a single bit indication that the DCI message can have the alternative size, or There will be a single bit indication of the alternative size for the DCI message.

23. The UE according to claim 21, wherein The indication via the physical broadcast channel message includes one or more bits for indicating a configuration of a CORESET.

24. The UE according to claim 23, wherein: The configuration of the CORESET is associated with blind detection of one or more DCI messages based at least in part on the assumption of the surrogate size.

25. A base station for wireless communication, comprising: Memory; as well as one or more processors coupled to the memory, the memory and the one or more processors being configured to: sending, via a physical broadcast channel message, an indication to attempt to decode a downlink control information (DCI) message scheduling a remaining minimum system information (RMSI) transmission based at least in part on an assumption of an alternate size different than a default size; and Wherein one or more of a size or a configuration of the DCI message having the alternative size is based at least in part on one or more of: a frequency range or band associated with said DCI message having said alternative size, or a frequency allocation of a CORESET associated with the DCI message having the alternative size; as well as The RMSI transmission is sent based at least in part on the DCI message.

26. The base station according to claim 25, wherein The indication via the physical broadcast channel message includes: a single bit indication that the DCI message can have the alternative size, or There will be a single bit indication of the alternative size for the DCI message.

27. The base station according to claim 25, wherein: The indication via the physical broadcast channel message includes one or more bits for indicating a configuration of a CORESET.

28. The base station according to claim 27, wherein: The configuration of the CORESET is associated with blind detection of one or more DCI messages based at least in part on the assumption of the surrogate size.

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