On-demand System Information Block 1 (SIB1) Request

Abstract

Various aspects of the present disclosure relate to on-demand system information block 1 (SIB1) requests. A device, e.g., a user equipment (UE), receives a synchronization signal block (SSB). The device transmits a SIB1 request based at least in part on the SSB, the SSB including one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

Description

Related applications

[0001] This application claims priority to U.S. Provisional Application Serial No. 63 / 574,197, filed April 3, 2024, entitled “Resources for On-Demand System Information Block 1 (SIB1) Requests,” the disclosure of which is incorporated herein by reference in its entirety. This application also claims priority to U.S. Provisional Application Serial No. 63 / 574,199, filed April 3, 2024, entitled “Synchronization Signal Block (SSB) for On-Demand System Information Block 1 (SIB1) Requests,” the disclosure of which is incorporated herein by reference in its entirety. This application also claims priority to U.S. nonprovisional application serial number 18 / 647,835, filed April 26, 2024, entitled “On-Demand System Information Block 1 (SIB1) Request,” the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] This disclosure relates to wireless communication, and more specifically, to power savings in wireless communication systems. Background Technology

[0003] A wireless communication system may include one or more network communication devices that support wireless communication for one or more user communication devices. The network communication devices may also be referred to as network equipment (NE), and the user communication devices may also be referred to as user equipment (UE), or other suitable terms. The wireless communication system can support wireless communication with one or more user communication devices by utilizing the resources of the wireless communication system (e.g., time resources (e.g., symbols, time slots, subframes, frames, etc.) or frequency resources (e.g., subcarriers, carriers, etc.)). Furthermore, the wireless communication system can support wireless communication across various radio access technologies, including third-generation (3G), fourth-generation (4G), fifth-generation (5G), and other suitable radio access technologies beyond 5G (e.g., sixth-generation (6G)). Summary of the Invention

[0004] The article “a” preceding an element is non-restrictive and should be understood to refer to “at least one” or “one or more” of those elements. The terms “a,” “at least one,” “one or more,” and “at least one of one or more…” are interchangeable. As used herein, the “or” included in the claims, as in the list of items (e.g., a list of items followed by phrases such as “at least one of,” “one or more of,” or “one or both of,”) indicates a list containing endpoints, such that a list of at least one of, for example, A, B, or C, means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase “based on” should not be construed as referring to a closed set of conditions. For example, an example step described as “based on condition A” may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase “based on” should also be interpreted as the phrase “at least partially based on.” Furthermore, as used herein, a “set” may contain one or more elements included in the claims.

[0005] Some embodiments of the methods and apparatus described herein may further include a UE for wireless communication, which may be configured, capable of, or used to perform one or more operations as described herein. For example, the UE may be configured, capable of, or used to: receive a synchronization signal block (SSB); and transmit a System Information Block 1 (SIB1) request at least in part based on the SSB, the SSB including one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

[0006] In some embodiments of the methods and apparatus for a UE described herein, the first parameter includes a frequency domain offset, in subcarriers, between the SSB and the resource block grid, and wherein the at least one processor is configured to cause the UE to: determine that the first parameter will be determined via a Physical Broadcast Channel (PBCH) field if the value of the first parameter is greater than a specified value; the second parameter includes a Physical Downlink Control Channel (PDCCH) configuration for receiving SIB1, and the second parameter includes Common Control Resource Set (CORESET) information, a common search space, and one or more PDCCH parameters; the first parameter includes at least one of the following: one or more first parameter values ​​for a first frequency range; or one or more second parameter values ​​for a second frequency range; the SSB further includes an indication of one or more Physical Random Access Channel (PRACH) resources for transmitting the SIB1 request, and wherein the at least one processor is configured to cause the UE to transmit the SIB1 request on at least one of the one or more PRACH resources; the at least one memory is configured to cause the UE to: determine at least one index value using a combination of the first parameter and the second parameter; and determine the at least one resource at least in part based on the index value.

[0007] In some embodiments of the methods and apparatus for a UE described herein, the at least one processor is configured to cause the UE to attempt to receive a broadcast SIB1 after transmitting the SIB request; the at least one processor is configured to cause the UE to: attempt to receive the broadcast SIB1 immediately after transmitting the SIB1 request; or attempt to receive the broadcast SIB1 after a first duration following the transmission of the SIB1 request; the at least one processor is configured to cause the UE to retransmit the SIB1 request at least in part based on the failure to receive the SIB1 after a second duration; the SSB includes a Master Information Block (MIB), and wherein the at least one processor is configured to cause the UE to: determine that the MIB contains an indication that cell access is prohibited; and transmit the SIB1 request at least in part based on a first parameter configured for on-demand SIB1 requests, a second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited; the at least one processor is configured to cause the UE to receive the SIB1, the SIB1 containing Residual Minimum System Information (RMSI).

[0008] Some embodiments of the methods and apparatus described herein may further include a processor (e.g., a component of a standalone processor chipset or UE) described for wireless communication. The processor may be configured, capable of, or usable for performing one or more of the operations described herein. For example, the processor may be configured, capable of, or usable for: receiving an SSB; and transmitting an SIB1 request at least in part based on the SSB, the SSB including one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

[0009] In some embodiments of the methods and apparatus for a processor described herein, the first parameter includes a frequency domain offset, in terms of the number of subcarriers, between the SSB and the resource block grid, and wherein the at least one controller is configured to cause the processor to: determine, if the value of the first parameter is greater than a specified value, that the first parameter will be determined via a PBCH field; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the at least one controller is configured to cause the processor to: attempt to receive the broadcast SIB1 immediately after transmitting the SIB1 request; or attempt to receive the broadcast SIB1 after a first duration following the transmission of the SIB1 request.

[0010] In some embodiments of the methods and apparatus for a processor described herein, the first parameter includes a frequency domain offset, in subcarrier numbers, between the SSB and the resource block grid, and at least one controller is configured to cause the processor to: determine that the first parameter will be determined via a PBCH field if the value of the first parameter is greater than a specified value; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the first parameter includes at least one of the following: one or more first parameter values ​​for a first frequency range; or one or more second parameter values ​​for a second frequency range; the SSB further includes an indication of one or more PRACH resources for transmitting the SIB1 request, and at least one controller is configured to cause the processor to transmit the SIB1 request on at least one of the one or more PRACH resources; the at least one processor is configured to cause the UE to: determine at least one index value using a combination of the first parameter and the second parameter; and determine the at least one resource at least in part based on the index value.

[0011] In some embodiments of the methods and apparatus for a processor described herein, the at least one controller is configured to cause the processor to attempt to receive a broadcast SIB1 after transmitting the SIB request; the at least one processor is configured to cause the UE to: attempt to receive the broadcast SIB1 immediately after transmitting the SIB1 request; or attempt to receive the broadcast SIB1 after a first duration following the transmission of the SIB1 request; the at least one controller is configured to cause the processor to retransmit the SIB1 request at least in part based on the failure to receive the SIB1 after a second duration; the SSB includes a Master Information Block (MIB), and wherein the at least one processor is configured to cause the UE to: determine that the MIB contains an indication that cell access is prohibited; and transmit the SIB1 request at least in part based on a first parameter configured for on-demand SIB1 requests, a second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited; the at least one controller is configured to cause the processor to receive the SIB1, the SIB1 including an RMSI.

[0012] Some embodiments of the methods and apparatus described herein may further include a method performed by a UE, the method comprising: receiving an SSB; and transmitting an SIB1 request at least in part based on the SSB, the SSB including one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

[0013] In some implementations of the methods and apparatus for a UE described herein, the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and the method further includes determining that the first parameter will be determined via a PBCH field if the value of the first parameter is greater than a specified value; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the first parameter includes at least one of the following: one or more first parameter values ​​for a first frequency range; or one or more second parameter values ​​for a second frequency range; the SSB further includes an indication of one or more PRACH resources for transmitting the SIB1 request, and the method further includes transmitting the SIB1 request on at least one of the one or more PRACH resources; further includes determining at least one index value using a combination of the first parameter and the second parameter; and determining the at least one resource based at least in part on the index value.

[0014] In some embodiments of the methods and apparatus for a UE described herein, the method further includes attempting to receive a broadcast SIB1 after transmitting the SIB request; further includes one or more of the following: attempting to receive the broadcast SIB1 immediately after transmitting the SIB1 request; or attempting to receive the broadcast SIB1 after a first duration following the transmission of the SIB1 request; further includes: retransmitting the SIB1 request at least in part based on the fact that the SIB1 has not been received after a second duration; the SSB includes a MIB, and the method further includes: determining that the MIB contains an indication that cell access is prohibited; and transmitting the SIB1 request at least in part based on a first parameter configured for on-demand SIB1 requests, a second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited; further includes receiving the SIB1, the SIB1 including an RMSI.

[0015] A newline (NE) (e.g., a base station) for wireless communication is described. The NE may be configured, capable of, or used to perform one or more of the operations described herein. For example, the NE may be configured, capable of, or used to transmit an SSB containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests; receive an SIB1 request; and transmit an SIB1 at least in part based on the SIB1 request.

[0016] In some embodiments of the methods and apparatus for the NE described herein, the first parameter includes a frequency domain offset, in terms of the number of subcarriers, between the SSB and the resource block grid, and the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the at least one processor is configured to cause the NE to transmit an indication for transmitting one or more resources requested by the SIB1, the indication including at least one index value generated using a combination of the first parameter and the second parameter.

[0017] Some embodiments of the methods and apparatus described herein may further include a method performed by the NE, the method comprising: transmitting an SSB, the SSB including one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests; receiving an SIB1 request; and transmitting an SIB1 at least in part based on the SIB1 request.

[0018] In some embodiments of the methods and apparatus for NE described herein, the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; further including an indication for transmitting one or more resources requested by the SIB1, the indication including at least one index value generated using a combination of the first parameter and the second parameter. Attached Figure Description

[0019] Figure 1 Examples of wireless communication systems according to various aspects of this disclosure are shown.

[0020] Figure 2 The time and frequency structure of the SS / PBCH block is shown.

[0021] Figure 3 and 4 An example of timing for candidate SS / PBCH blocks within an SS burst set is shown.

[0022] Figure 5 An example process for MIB and SIB transport and the relationship between SIBs is shown.

[0023] Figure 6 Methods for obtaining on-demand SIB1 according to various aspects of this disclosure are shown.

[0024] Figure 7 An example SI-Request-Config IE is shown according to various aspects of this disclosure.

[0025] Figure 8 An example RACH-ConfigGeneric IE is shown according to various aspects of this disclosure.

[0026] Figure 9 Example IEs based on various aspects of this disclosure are shown.

[0027] Figure 10 Examples of UEs according to various aspects of this disclosure are shown.

[0028] Figure 11 Examples of processors according to various aspects of this disclosure are shown.

[0029] Figure 12 Examples of NEs according to various aspects of this disclosure are shown.

[0030] Figure 13 A flowchart of a method according to various aspects of this disclosure is shown.

[0031] Figure 14 A flowchart of a method according to various aspects of this disclosure is shown. Detailed Implementation

[0032] In a wireless communication system, a UE and an NE (e.g., a base station) can use time-frequency resources to support wireless communication (e.g., reception and / or transmission of wireless communication). To enable a UE to connect to an NE for wireless communication, the UE may attempt to acquire (e.g., receive, obtain, retrieve, etc.) time and frequency synchronization with the NE and detect the NE's PCID. To enable the UE to achieve time / frequency synchronization with the NE, the NE may transmit (e.g., transmit, send, etc.) synchronization signals, such as SSBs containing synchronization components, such as the Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), MIB, PBCH, PCID, etc. The UE may receive the SSB to obtain information for acquiring access and connection to the NE.

[0033] For example, the NE can transmit SIB1 (e.g., as a Radio Resource Control (RRC) message on the Downlink Shared Channel (DL-SCH), and the UE can receive SIB1 and decode it using information from the MIB contained in the SSB. SIB1 can contain various information, such as availability and scheduling of other SIBs and RRC information. In implementations, SIB1 represents the RMSI and is distinct from other system information, such as system information contained in other SIBs (e.g., SIB2, SIB3, ..., SIBN, etc.). However, the NE may consume significant energy resources when transmitting different signaling messages containing the SSB, PBCH, MIB, and SIB1. For example, the NE may broadcast SIB1 periodically (e.g., every n milliseconds (ms), which can significantly increase the energy usage of the wireless communication system.

[0034] Therefore, this disclosure describes techniques for: a UE determining whether an on-demand SIB1 transmission by an NE is available, and the UE determining the resources (e.g., PRACH resources) for requesting an on-demand SIB1 transmission from the NE. For example, the availability of an on-demand SIB1 request can be determined in various ways, such as by using a custom PCID, configuring one or more parameters for the on-demand SIB1 request, failing to receive an SIB1 after a threshold timer and / or a threshold number of SIB1 acquisition attempts, cell blocking (e.g., in the MIB), subcarrier offset indicating that the SIB1 has not been broadcast (e.g., will be requested on demand), and / or determining values ​​from the SSB and / or MIB. Based on the determination of whether an on-demand SIB transmission is available, the UE can determine whether to attempt to detect a broadcast SIB1 and / or request an on-demand SIB1 transmission.

[0035] Furthermore, the SIB1 request resources (e.g., PRACH resources, time / frequency resources, etc.) used to request on-demand SIB1 transmissions can be determined in various ways. For example, the UE can determine the request resources based on the resources on which it receives SSB transmissions. For instance, the request resources can be determined as a combination of MIB and / or PBCH bits to determine the frequency offset of the resources used to determine the PRACH transmission for the SIB1 request. Alternatively or additionally, the timing of the PRACH for the SIB1 request can be determined based on the PCID and / or the MIB or PBCH content. Thus, the implementation allows the NE to avoid broadcasting SIB1 (e.g., periodically) and respond to on-demand requests for SIB1 transmissions using the target SIB1 transmission.

[0036] By utilizing the described techniques, power resource savings can be achieved from both the NE and UE perspectives. For example, the NE can avoid periodic SIB1 broadcasts and can respond to on-demand SIB1 requests via triggered SIB1 transmissions. Furthermore, the UE can minimize the SIB1 detection process and implement on-demand SIB1 requests to the NE.

[0037] Various aspects of this disclosure are described in the context of wireless communication systems.

[0038] Figure 1 Examples of a wireless communication system 100 according to various aspects of this disclosure are shown. The wireless communication system 100 may include one or more NEs 102, one or more UEs 104, and a core network (CN) 106. The wireless communication system 100 may support various radio access technologies. In some embodiments, the wireless communication system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other embodiments, the wireless communication system 100 may be an NR network, such as a 5G network, a 5G-Advanced (5G-A) network, or a 5G Ultra Wideband (5G-UWB) network. In other embodiments, the wireless communication system 100 may be a combination of 4G and 5G networks, or other suitable radio access technologies, including IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20. The wireless communication system 100 may support radio access technologies beyond 5G, such as 6G. In addition, the wireless communication system 100 can support technologies such as Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), or Code Division Multiple Access (CDMA).

[0039] One or more NEs 102 may be distributed throughout a geographic area to form a wireless communication system 100. One or more of the NEs 102 described herein may be, include, or may be referred to as a network node, base station, network element, network function, network entity, radio access network (RAN), NodeB, eNodeB (eNB), next-generation NodeB (gNB), or other suitable terms. NEs 102 and UEs 104 may communicate via a communication link, which may be a wireless or wired connection. For example, NEs 102 and UEs 104 may perform wireless communication (e.g., receive signaling, transmit signaling) via a Uu interface.

[0040] NE 102 can provide a geographic coverage area, for which NE 102 can support services for one or more UE 104s within the geographic coverage area. For example, NE 102 and UE 104 can support wireless communication of signals associated with services based on one or more radio access technologies (e.g., voice, video, packet data, messaging, broadcasting, etc.). In some embodiments, NE 102 can be mobile, such as a satellite associated with a non-terrestrial network (NTN). In some embodiments, different geographic coverage areas associated with the same or different radio access technologies can overlap, but different geographic coverage areas can be associated with different NE 102s.

[0041] One or more UEs 104 may be distributed throughout the geographic area of ​​the wireless communication system 100. UE 104 may include or be referred to as a remote unit, mobile device, wireless device, remote device, subscriber device, transmitter device, receiver device, or some other suitable term. In some embodiments, UE 104 may be referred to as a unit, station, terminal, or client, etc. Alternatively or alternatively, UE 104 may be referred to as an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a Machine Type Communication (MTC) device, etc.

[0042] UE 104 can support direct wireless communication with other UE 104s on a communication link. For example, UE 104 can support direct wireless communication with another UE 104 on a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular V2X deployments, the communication link may be referred to as a sidelink. For example, UE 104 can support direct wireless communication with another UE 104 via a PC5 interface.

[0043] NE 102 can support communication with CN 106 or another NE 102, or both. For example, NE 102 can interface with other NE 102 or CN 106 via one or more backhaul links (e.g., S1, N2, N6, or other network interfaces). In some embodiments, NE 102 can communicate directly with each other. In some other embodiments, NE 102 can communicate indirectly with each other (e.g., via CN 106). In some embodiments, one or more NE 102 may include sub-components, such as access network entities, which may be instances of Access Node Controllers (ANCs). The ANC can communicate with one or more UEs 104 via one or more other access network transport entities, which may be referred to as radio heads, smart radio heads, or transmit-receive points (TRPs).

[0044] CN 106 can support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. CN 106 can be an evolved packet core (EPC) or a 5G core (5GC), which may include control plane entities that manage access and mobility (e.g., Mobility Management Entity (MME), Access and Mobility Management Functions (AMF)) and user plane entities that route packets or interconnects to external networks (e.g., Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Functions (UPF)). In some implementations, the control plane entities may manage non-access stratum (NAS) functions of one or more UE 104 served by one or more NE102s associated with CN 106, such as mobility, authentication, and bearer management (e.g., data bearers, signaling bearers, etc.).

[0045] CN 106 can communicate with the packet data network via one or more backhaul links (e.g., via S1, N2, N6, or other network interfaces). The packet data network may contain an application server. In some implementations, one or more UEs 104 can communicate with the application server. UE 104 can establish a session (e.g., a Protocol Data Unit (PDU) session) with CN 106 via NE 102. CN 106 can use the established session (e.g., an established PDU session) to route services (e.g., control information, data, etc.) between UE 104 and the application server. A PDU session can be an instance of a logical connection between UE 104 and CN 106 (e.g., one or more network functions of CN 106).

[0046] In the wireless communication system 100, NE 102 and UE 104 can use the resources of the wireless communication system 100 (e.g., time resources (e.g., symbols, time slots, subframes, frames, etc.) or frequency resources (e.g., subcarriers, carriers)) to perform various operations (e.g., wireless communication). In some embodiments, NE 102 and UE 104 can support different resource structures. For example, NE 102 and UE 104 can support different frame structures. In some embodiments, such as in 4G, NE 102 and UE 104 can support a single frame structure. In some other embodiments, such as in 5G and in other suitable radio access technologies, NE 102 and UE 104 can support various frame structures (i.e., multiple frame structures). NE 102 and UE 104 can support various frame structures based on one or more parameter sets.

[0047] In the wireless communication system 100, one or more parameter sets can be supported, and a parameter set can include subcarrier spacing and cyclic prefix. The first parameter set (e.g., This can be associated with a first subcarrier spacing (e.g., 15 kHz) and a regular cyclic prefix. In some implementations, the first set of parameters (e.g., ...) associated with the first subcarrier spacing (e.g., 15 kHz) is... One time slot can be used per subframe. The second parameter set (e.g., This can be associated with the second subcarrier spacing (e.g., 30 kHz) and the regular cyclic prefix. The third parameter set (e.g., This can be associated with a third subcarrier spacing (e.g., 60 kHz) and a regular cyclic prefix or an extended cyclic prefix. A fourth set of parameters (e.g., This can be associated with the fourth subcarrier spacing (e.g., 120 kHz) and the regular cyclic prefix. The fifth parameter set (e.g., This can be associated with the fifth subcarrier spacing (e.g., 240 kHz) and the regular cyclic prefix.

[0048] Time intervals for resources (e.g., communication resources) can be organized according to frames (also called radio frames). Each frame can have a duration, for example, 10 milliseconds (ms). In some implementations, each frame can contain multiple subframes. For example, each frame can contain 10 subframes, and each subframe can have a duration, for example, 1 ms. In some implementations, each frame can have the same duration. In some implementations, each subframe of a frame can have the same duration.

[0049] Alternatively, the time intervals of resources (e.g., communication resources) can be organized according to time slots. For example, a subframe can contain a certain number (e.g., quantity) of time slots. The number of time slots in each subframe can also depend on one or more parameter sets supported in the wireless communication system 100. For example, the first, second, third, fourth, fifth, sixth, and seventh parameter sets (i.e., ...) associated with the corresponding subcarrier intervals of 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, and 960 kHz. , , , , , , The subframe can utilize one time slot per subframe, two time slots per subframe, four time slots per subframe, eight time slots per subframe, 16 time slots per subframe, 32 time slots per subframe, and 64 time slots per subframe, respectively. Each time slot can contain a certain number (e.g., quantity) of symbols (e.g., Orthogonal Frequency Division Multiplexing (OFDM) symbols). In some implementations, the number (e.g., quantity) of time slots used for a subframe can depend on the parameter set. For a regular cyclic prefix, a time slot can contain 14 symbols. For an extended cyclic prefix (e.g., applicable to a 60 kHz subcarrier spacing), a time slot can contain 12 symbols. The relationship between the number of symbols per time slot, the number of time slots per subframe, and the number of time slots per frame for the regular and extended cyclic prefixes can depend on the parameter set. It should be understood that for a first parameter set (e.g., ...) associated with a first subcarrier spacing (e.g., 15 kHz) ... The reference to ) can be used interchangeably between subframes and time slots.

[0050] In the wireless communication system 100, the electromagnetic (EM) spectrum can be divided into various categories, frequency bands, frequency channels, etc., based on frequency or wavelength. As an example, the wireless communication system 100 can support one or more operating frequency bands, such as frequency range 1 (FR1) (410 MHz - 7.125 GHz) and frequency range 2 (FR2) (24.25 GHz - 71 GHz) in the frequency range specification. In some embodiments, NE 102 and UE 104 can perform wireless communication on one or more operating frequency bands. In some embodiments, FR1 can be used by NE 102 and UE 104, as well as other equipment or devices for cellular communication services (e.g., control information, data). In some embodiments, FR2 can be used by NE 102 and UE 104, as well as other equipment or devices for short-range, high data rate capabilities.

[0051] FR1 can be associated with one or more parameter sets (e.g., at least three parameter sets). For example, FR1 can be associated with the following parameter set: the first parameter set (e.g., ), which includes a 15 kHz subcarrier spacing; the second parameter set (e.g., ), which includes a 30 kHz subcarrier spacing; and a third parameter set (e.g., ), which includes a 60 kHz subcarrier spacing. FR2 can be associated with one or more parameter sets (e.g., at least two parameter sets). For example, FR2 can be associated with the following parameter set: a third parameter set (e.g., ), which includes a 60 kHz subcarrier spacing; and a fourth parameter set (e.g., It contains a 120 kHz subcarrier spacing.

[0052] According to the implementation scheme, one or more of NE 102 and UE 104 can be used to implement aspects of the technology described with reference to this disclosure. For example, NE 102 (e.g., a base station) can transmit signaling (e.g., SSB) indicating whether NE 102 supports on-demand SIB1 transmission. UE 104 can receive the signaling and determine whether to execute an on-demand SIB1 request. When it is determined that on-demand SIB1 transmission is available, UE 104 can determine the requested resources for transmitting the on-demand SIB1 request. For example, the requested resources can be determined based on the resources on which SSB transmissions are received and / or based on the PCID and / or MIB or PBCH content. UE 104 can request SIB1 transmission, and NE 102 can transmit SIB1 to enable UE 104 to obtain a connection to NE 102 for wireless communication.

[0053] Emissions and energy consumption from various components of telecommunications systems have adverse climate impacts. Furthermore, the operating costs of running telecommunications services are high. In wireless communication systems, numerous industry-specific factors stemming from the need to address rising network costs have shaped various efficiency-enhancing initiatives. Mobile data traffic is continuously growing, estimated at 6.4 gigabytes per user per month in 2019, and is projected to triple per user over the next five years. Combined with the rising costs of spectrum, capital investment, and ongoing RAN maintenance / upgrades, energy-saving measures in network operations are crucial. Compared to previous generations of mobility, 5G New Radio (NR) offers significantly improved energy efficiency per gigabyte. However, 5G use cases and the adoption of millimeter waves will involve more sites and antennas. This raises the prospect that more efficient networks may, in turn, lead to higher emissions.

[0054] Research on network power efficiency in NR highlights power efficiency goals [3GPP Technical Report (TR) 38.864]. This research demonstrates that network power efficiency is crucial for environmental sustainability, reducing environmental impact (greenhouse gas emissions), and saving operating costs. As 5G becomes more prevalent in industries and geographic areas involving the use of high data rates to process more advanced services and applications (e.g., for extended reality (XR)), networks are becoming denser, using more antennas, greater bandwidth, and more frequency bands.

[0055] Energy consumption has become a critical component of operators' operating costs. It is estimated that energy costs for mobile networks account for approximately 23% of operators' total costs. The majority of energy consumption comes from the radio access network, particularly from active antenna units (AAUs), with data centers and fiber optic transmission accounting for a smaller share. The power consumption of radio access can be divided into two parts: the dynamic portion consumed while data transmission / reception is in progress, and the static portion that continues to be consumed even when data transmission / reception is not in progress to maintain the operation of the radio access equipment.

[0056] Therefore, there is a directive requiring research and development, particularly for network power consumption models (UE power consumption models are already defined in TR38.840), KPIs, and evaluation methods for base stations, and for identifying and researching network power-saving technologies in target deployment scenarios. The research investigates how to use potential support / feedback from UEs, potential UE assistance information, and information exchange / coordination through network interfaces to achieve more efficient operation, and finer-grained transmission and / or reception adaptation, in the time, frequency, spatial, and power domains, using one or more network power-saving technologies dynamically and / or semi-statically.

[0057] The study assessed the potential network energy consumption gains, but also evaluated and balanced the impact on network and user performance, for example by examining the following KPIs: spectral efficiency, capacity, user-aware throughput (UPT), latency, UE power consumption, complexity, handover performance, call drop rate, initial access performance, and KPIs related to service level agreement (SLA) guarantees.

[0058] The UE can transmit PRACH to establish a connection between the UE and the NE. In 5G, PRACH involves preamble transmission, where the UE selects a random access preamble from a predefined set of preambles. These preambles can be broadly categorized into two types: short preambles and long preamble formats. The UE also selects a random sequence number for the preamble. After selecting the preamble and sequence number, the UE transmits the preamble on the PRACH.

[0059] Regarding the Synchronization Signal / PBCH Block (SS / PBCH Block), cell search is the process by which the UE obtains time and frequency synchronization with a cell and detects the cell's PCID. During cell search operations performed under conditions such as UE power-on, connected-mode mobility, idle-mode mobility (e.g., reselection), and inter-RAT mobility to the NR system, the UE uses the NR synchronization signal and PBCH to deduce information for cell access. Similar to LTE, two types of synchronization signals are defined for NR: PSS and SSS. The Synchronization Signal / PBCH Block (SS / PBCH Block; also known as SSB) consists of the PSS, SSS, and Physical Broadcast Channel (PBCH). The synchronization signal can also be used by the UE for Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) measurements.

[0060] Regarding PCID, 1008 unique PCIDs are defined in 5G NR, and these 1008 NR PCIDs are divided into 336 unique groups, each group consisting of three distinct identifiers. The PCID of a cell can be calculated using the following formula:

[0061] N ID Cell = 3 N ID (1) + N ID (2) , where N ID (1) ∈ {0,1, … ,335} and N ID (2) ∈ {0,1,2}

[0062] The UE can derive the PCI group number N from the SSS. ID (1) And derive the physical layer identifier N from PSS. ID (2) .

[0063] Figure 2The time and frequency structure 200 of the SS / PBCH block is shown. In the time and frequency structure 200, the PSS, SSS, and PBCH are together in consecutive OFDM symbols, and each SS / PBCH block occupies 4 OFDM symbols in the time domain and extends over 240 subcarriers (20 RBs) in the frequency domain. Furthermore, the PSS occupies the first OFDM symbol and spans 127 subcarriers, and the SSS is located in the third OFDM symbol and spans 127 subcarriers. There are 8 unused subcarriers below the SSS and 9 unused subcarriers above the SSS. The PBCH occupies two full OFDM symbols (second and fourth) spanning 240 subcarriers, and is also in the third OFDM symbol spanning 48 subcarriers below and above the SSS. This results in the PBCH occupying 576 subcarriers over three OFDM symbols (240+48+48+240 = 576). The PBCH demodulation reference signal (DM-RS) occupies 144 REs, which is one-quarter of the total REs, and the remaining REs are used for the PBCH payload (576-144 = 432 REs).

[0064] Table 1 presents a summary of the frequency resources occupied by the SS / PBCH block, including PSS, SSS, PBCH, and DM-RS used for PBCH. The complex value symbols corresponding to the resource elements indicated as 'set to 0' in Table 1 are set to zero. As can be seen from Table 1, the location of the PBCH DM-RS depends on the cell's PCID (v = N). ID cell mod 4), for example, the PCID that has already been determined by the UE using PSS / SSS.

[0065] Table 1

[0066]

[0067] Regarding the details of the SSB in the time domain, each SS / PBCH block spans four OFDM symbols in the time domain and is transmitted periodically at intervals of 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms. While longer SS / PBCH block intervals enhance network energy performance, shorter intervals facilitate faster cell search for the UE. The UE can assume a default interval of 20 ms during initial cell search or idle mode mobility.

[0068] Regarding SS burst sets, SS burst sets are defined to enable beam scanning for PSS / SSS and PBCH. An SS burst set contains a set of SS / PBCH blocks, and each SS / PBCH block can be transmitted on a different beam. Furthermore, an SS burst set can contain one or more SS / PBCH blocks. SS / PBCH blocks in an SS burst set are transmitted in a time-division multiplexed manner, and the SS burst set can be limited to a 5 ms window and located in the first or second half of a 10 ms radio frame. The network sets the periodicity of SS / PBCH blocks via the RRC parameter ssb-PeriodicityServingCell, which can take values ​​within the range {5 ms, 10 ms, 20 ms, 40 ms, 80 ms, 160 ms}. The maximum number of candidate SS / PBCH blocks in an SS burst set (L...) is... max It depends on the carrier frequency / band, as shown in Table 2 below.

[0069] Table 2

[0070]

[0071] Within a 5 ms half-frame, the starting OFDM symbol index of the candidate SS / PBCH block within the SS burst set depends on the subcarrier spacing (SCS) and carrier frequency / band summarized in Table 3 below. For details, see Section 4.1 of 3GPP Technical Specification (TS) 38.213.

[0072] Table 3

[0073]

[0074] Note that when the network does not use beamforming, it can transmit an SS / PBCH block, and therefore an SS / PBCH block start position can exist.

[0075] Figure 3 and 4 Example 300 of timing for candidate SS / PBCH blocks within an SS burst set is shown. For example, example 300 is for the case where SCS = 15 kHz and the carrier frequency is between 3 GHz and 6 GHz.

[0076] Figure 5 An example procedure 500 is shown for MIB and SIB transmissions and the relationship between SIBs. Procedure 500, for example, illustrates communication between NE 102 and UE 104.

[0077] The following describes some characteristics of the MIB. For more detailed information on MIB scheduling, please refer to TS 38.331-5.2.1 and TS 38.213-4.1. The MIB can be transmitted on the Broadcast Channel (BCH) / PBCH. The PBCH is transmitted as part of the SSB. The MIB can be transmitted periodically at 80 ms intervals, and repeated transmissions can occur within these 80 ms intervals. For initial cell selection, the UE can assume that half-frames with SS / PBCH blocks occur periodically at 2-frame intervals. The MIB can contain parameters for decoding SIB1.

[0078] The following is an example implementation of MIB:

[0079]

[0080] The field `subCarrierSpacingCommon` indicates the subcarrier spacing for the SIB1Msg.2 / 4 used in the Initial Access and System Information (SI) messages. The interpretation of this value varies across the frequency range, as summarized in Table 4.

[0081] Table 4

[0082]

[0083] The field ssb-subcarrierOffset corresponds to k ssb (See, for example, TS 38.213). This field indicates the frequency domain offset between the SSB and the total resource block grid in terms of the number of subcarriers. If k_ssb uses a value greater than 15, it is represented by a combination of the PBCH data field and ssb-subcarrierOffset. The dmrs-TypeA-Position field indicates the location of the (first) downlink (DL) DM-RS. The pdcchConfigSIB1 field determines the bandwidth, common ControlResourceSet (CORESET), common search space, and PDCCH parameters used for the PDCCH / SIB. This corresponds to RMSI-PDCCH-Config.

[0084] The following describes the characteristics of SIB1 in, for example, a 5G implementation. SIB1 can be transmitted on the DL-SCH (note: SIB1 is the first RRC message besides the MIB). SIB1 can be transmitted periodically at 160 ms intervals, and repeated transmissions can occur within this 160 ms period. SIB1 contains information about the availability and scheduling (e.g., periodicity, SI window size) of other SIBs. SIB1 indicates whether other SIBs are provided via a periodic broadcast basis or an on-demand basis. If other SIBs besides SIB1 are provided on demand, SIB1 may contain information for the UE to perform an SI request.

[0085] Therefore, the implementation schemes described herein provide solutions for implementing on-demand SIB1 requests and transmissions, for example, to achieve energy savings on the network and UE sides. For instance, the described techniques provide methods for determining whether on-demand SIB1 is available and for identifying resources for requesting on-demand SIB1 transmissions.

[0086] Figure 6 A method 600 for obtaining on-demand SIB1 according to various aspects of this disclosure is illustrated. For example, method 600 represents an overview of the embodiments described in this disclosure, such as those detailed below. The operation of the method can be implemented by the UE described herein. In some embodiments, the UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. It should be noted that the method described herein describes possible embodiments, and the operations and steps may be rearranged or otherwise modified, and other embodiments are possible.

[0087] At 602, the method may include determining the availability of on-demand SIB1 requests. The operation of 602 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 602 may be referenced... Figure 7 The UE described is used for execution.

[0088] At 604, the method may include determining the resource for the SIB1 request. The operation of 604 can be performed according to the examples described herein. In some embodiments, aspects of the operation of 604 may be referenced... Figure 7 The UE described is used for execution.

[0089] At 606, the method may include using determined resources to transmit the SIB1 request. The operation of 606 can be performed according to the examples described herein. In some embodiments, aspects of the operation of 606 may be referenced... Figure 7 The UE described is used for execution.

[0090] At 608, the method may include receiving an acknowledgment of the SIB1 request. The operation of 608 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 608 may be referenced... Figure 7 The UE described is used for execution.

[0091] At 610, the method may include receiving a transmission of SIB1. The operation of 610 can be performed according to the examples described herein. In some embodiments, aspects of the operation of 610 can be found in reference to... Figure 7 The UE described is used for execution.

[0092] In the implementation scheme, the UE determines the cell's PCID from the SSB. For example, the SSB contains components such as the PSS, SSS, PBCH containing the MIB, etc. In at least one instance, the PCID can be determined based on the detected PSS and / or SSS sequence ID. The PCID and / or PCID range can be predetermined to enable the UE to transmit on-demand SIB1 transmission requests on the cell. For example, PCID pattern "N" can be used to determine a custom PCID configured to signal the availability of on-demand SIB1 transmissions. In an example, if N = 100, then PCIDs 100, 200, 300…1000 represent custom PCIDs. In another instance of using and determining a PCID as a custom PCID, the custom PCID can be associated with a PSS sequence identifier (ID). For example, in NR, the PSS sequence ID can be {0, 1, 2}. For example, if the UE detects a PSS sequence ID of 2, the UE is allowed to transmit an on-demand SIB1 transmission request on the cell. The determination of the PCID and / or PCID can be specified, including parameters used for such determination.

[0093] In the implementation scheme, when the UE determines that the cell has a custom PCID, it can initiate an on-demand SIB1 request. This request can be implemented by initiating a PRACH procedure, where PRACH resources (e.g., preamble and / or time-frequency resources) can be reserved for the on-demand SIB1 request. Alternatively, the request can be implemented by initiating a contention-based PRACH (CBRA) procedure and subsequently receiving permission in Msg2 for transmitting an RRC request or a new Media Access Control (MAC) element (CE) for requesting SIB1 for the current cell.

[0094] In the implementation scheme, when determining a custom PCID, the UE may first attempt to obtain SIB1, as in a traditional scenario, for example, from a cell that regularly transmits (e.g., broadcasts) SIB1. If SIB1 is not received after 't' milliseconds and / or 'a' number of attempts, the UE may be allowed to request SIB1 on an on-demand basis. The parameters 't' milliseconds and / or 'a' number of attempts may be specified with a certain default value, which can be configured and stored from previous cells (e.g., in the same RAN area), and / or can be configured and stored from SIB1 previously received from the same cell.

[0095] The implementation scheme can also be used to allow operators (e.g., operators configuring the wireless communication system of the NE) to use custom PCIDs as regular PCIDs, and to allow another operator to use these as custom PCIDs, enabling the UE to request SIB1 on an on-demand basis.

[0096] In the implementation plan, when an operator intends to use a custom PCID to enable UEs to request SIB1 on demand, the operator can set the cellBarred information element (IE) included in the MIB to "Disabled". An example MIB content is shown below:

[0097]

[0098] Table 5 below provides some example descriptions of MIB fields.

[0099] Table 5

[0100]

[0101]

[0102] In the implementation plan, UEs with on-demand SIB1 capability can continue to request SIB1 on demand when a custom PCID is detected and the cellBarred IE in the MIB is set to "barred". UEs not configured to request on-demand SIB1 can treat the cell as blocked. Operators that periodically transmit (e.g., broadcast) SIB1 can continue to use the custom PCID as the regular PCID and set the cellBarred IE in the MIB to "notBarred".

[0103] In some scenarios, operators may continue to use a custom PCID as a regular PCID, but for specific reasons (e.g., cell maintenance), they may need to disable a cell and therefore set the cellBarred IE in the MIB to "barred". The operator may receive unnecessary SIB1 requests. Since the cell is unavailable at this time, and therefore SIB1 requests cannot achieve a successful cell connection, this could waste UE battery power.

[0104] Therefore, in the implementation, operators using on-demand SIB1 transmission (e.g., broadcasting SIB1 intermittently) can perform one or more of the following: use one of the custom PCIDs in the SSB for cell-defined SSB transmission (CD-SSB); set the cellBarred IE included in the MIB to “barred”; and / or use the ssb-SubcarrierOffset field to indicate that the cell does not provide SIB1. This can be achieved by using a term called k for FR1. SSB A value greater than 23 (or k_ssb) (as defined in TS 38.213), or a value greater than 11 for FR2, can be used. SSB Specific values, for example, 30 for FR1 and 14 for FR2. SSB This can indicate the frequency domain offset, in terms of the number of subcarriers, between the SSB and the total resource block grid. If k_ssb uses a value greater than 15, it can be represented by a combination of the PBCH data field and ssb-subcarrierOffset. After determining that the above conditions are met, the UE can initiate an on-demand SIB1 request.

[0105] If an operator periodically broadcasts SIB1 and uses a custom PCID as a regular PCID, it may perform one or more of the following (a) and / or (b):

[0106] (a) When a cell is to be blocked, the cellBarred IE in the MIB is set to "barred," but the ssb-SubcarrierOffset field can be used to indicate that the cell provides (e.g., broadcasts) SIB1. UEs supporting on-demand SIB1 can determine that a cell periodically provides SIB1 (e.g., broadcasts SIB1) and avoid requesting SIB1 on demand, but will not attempt to access the cell because the cell is considered blocked. UEs supporting non-on-demand SIB1 will not attempt to access the cell because the cell is considered blocked. Some specific function UEs, such as Reduced Capability (REDCAP) UEs, Network Energy Saving (NES) UEs, and / or UEs with Non-Terrestrial Network (NTN) capabilities (whether or not they intend to access for NTN purposes), can continue to receive SIB1 to determine whether such a cell is actually blocked.

[0107] (b) For non-cell-defined SSBs, the custom PCID is not used. For CD-SSBs, if a custom PCID is to be used, the operator can set the cellBarred IE contained in the MIB to "notBarred" when the cell is operating normally. In this case, the ssb-SubcarrierOffset field is used to indicate that the cell provides (e.g., broadcast) SIB1, and the UE can accordingly determine the common ControlResourceSet (CORESET), common search space, and PDCCH parameters.

[0108] Operators that broadcast SIB1 irregularly may perform one or more of the following (a) and / or (b):

[0109] (a) Using k SSB A value of 30 (for FR1) or 14 (for FR2) indicates that SIB1 is provided on demand. UEs supporting non-on-demand SIB1 can determine that SIB1 has not been broadcast. In this case, the pdcch-ConfigSIB1 field can indicate that the UE may (or may not) have found a frequency location for the SS / PBCH with a CORESET and search space for SIB1 (see TS38.213, Clause 13). UEs supporting on-demand SIB1 can directly base their decisions on k. SSB The value 30 (for FR1) or 14 (for FR2), and / or combined with a custom PCID and / or cellBarred in the MIB, determines whether to request SIB1.

[0110] (b) The various combinations mentioned above can also be used.

[0111] In the implementation, the UE can determine whether to allow the UE to transmit SIB1 transmission requests to the cell on demand from the SSB of the cell (e.g., from the MIB and / or PBCH payload). Therefore, the MIB and / or PBCH can contain bits and / or IEs indicating whether the "SIB1 transmission request" is allowed. This indication can be provided, for example, using alternative values ​​available in the MIB.

[0112] In the implementation, a UE supporting non-on-demand SIB1 can attempt to acquire SIB1 from a cell that is assumed to be broadcasting normally and / or regularly, and can block that cell for 300 seconds after a threshold time and / or a threshold number of attempts have been made to acquire SIB1. To prevent this, a configurable timer value can be used to prevent the UE from making repeated SIB1 acquisition attempts. In an example, this can be achieved, for instance, by using the values ​​from pdcch-ConfigSIB1 and k. SSB The available code point combinations are used to signal the timer value.

[0113] In the implementation, the trigger for on-demand SIB1 requests / transmissions includes parameters configured for on-demand SIB1 requests. For example, the parameters represent specific K... SSB Value. At least one instance utilizes K. SSB Values ​​>11 (for FR2) or >23 (for FR1) make 4 (FR2) or 8 (FR1) code points available for on-demand SIB1 requests / transmissions. To receive configurations, these code points can be used, and optionally combined with multiple PCIDs and / or pdcch-ConfigSIB1 indexes (e.g., controlResourceSetZero, searchSpaceZero), to implement tables providing the information in Table 6 below.

[0114] Table 6

[0115]

[0116] Figure 7 Example SI-Request-Config IE 700 is shown according to various aspects of this disclosure.

[0117] Figure 8 An example of RACH-ConfigGeneric IE 800 according to various aspects of this disclosure is shown.

[0118] In the implementation scheme, and based on combinations of code points (e.g., 8 for FR2) and multiple custom PCIDs (e.g., 10), 80 indexes can be made available, and even more indexes can be implemented if the pdcch-ConfigSIB1 index (controlResourceSetZero, searchSpaceZero) is also used. Table 7 below presents some example correlations between index values ​​and IE values ​​according to various aspects of this disclosure.

[0119] Table 7

[0120]

[0121] Figure 9 Example IE 900 is shown according to various aspects of this disclosure. In an implementation, one or more parameters from Table 6 above may have default and / or specified values ​​in one of the 3GPP specifications, and these parameters may be optional for the columns of Table 7, as shown in IE 900.

[0122] In the implementation plan, even if some UEs supporting non-on-demand SIB1 are available to receive broadcast SIB1 but are unable to receive it, K can still be used. SSB Values ​​>11 (for FR2) or >23 (for FR1). For example, the TS 38.213 specification indicates that if the UE detects a second SS / PBCH block and the second SS / PBCH block does not provide a CORESET for the Type 0-PDCCH CSS set, as described in Clause 4.1, the UE may ignore information related to the Global Synchronization Channel Number (GSCN) of the SS / PBCH block location used to perform cell search. Therefore, some UEs supporting non-on-demand SIB1 (e.g., NTN, REDCAP, NES UEs) may consume excessive battery resources. To minimize this impact, the MIB disable bit can be used to mitigate the attempt by non-on-demand SIB1-supporting UEs to acquire SIB1. UEs supporting on-demand SIB1 can acquire SIB1 based on the presence of a custom PCID in the SSB, the cellBarred indication in the MIB, and / or K. SSB A value >11 (for FR2) or >23 (for FR1) is used to determine the request for On-Demand SIB1 and the corresponding resources.

[0123] In at least one instance, K SSBSet to the value '30' to indicate that an SIB1 request (e.g., a wake-up signal) will be used to obtain SIB1. The PRACH resource used for the SIB1 request can be specified by a custom PCID (e.g., PCID#100 is PRACH_Config1, PCID#200 is PRACH_Config2, etc.), and / or specified according to the controlResourceSetZero and / or searchSpaceZero index, as discussed above.

[0124] According to the implementation plan, This indicates the first parameter containing ssb-SubcarrierOffset, where extended values ​​are not used (e.g., where for FR2, ...). / or When using extended values ​​(e.g., ), This can represent the ssb-SubcarrierOffset+PBCH field. Additionally, the second parameter can be pdcch-ConfigSIB1, which can contain CORESET information and search space information, such as ControlResourceSetZero and SearchSpaceZero.

[0125] In at least one instance, K SSB It is set to the value '31', and the controlResourceSetZero and / or searchSpaceZero indexes are set to 0. Therefore, the GSCN range can be Furthermore, a UE supporting non-on-demand SIB1 can determine that no information about a second SS / PBCH block exists on the detected SS / PBCH block, the second SS / PBCH block having a CORESET for the associated Type0-PDCCH CSS set. Setting the controlResourceSetZero and / or searchSpaceZero index to '0' prevents a UE supporting non-on-demand SIB1 from attempting to acquire SIB1 elsewhere. Custom PCIDs and / or cell blockades can signal UEs supporting on-demand SIB1 to transmit SIB1 requests. For example, using custom PCIDs and / or cell blockades in the MIB, a UE supporting on-demand SIB1 can determine to implement an SIB1 request and can determine PRACH and other resources / configurations, such as those discussed above.

[0126] The implementation scheme includes the manner of receiving and / or delivering SIB1. Determining whether to make an SIB1 request, which resources to use for making the SIB1 request, and which resources to use for receiving acknowledgments can be based on the implementation scheme described throughout this disclosure. For example, after transmitting (e.g., transporting, delivering, propagating, etc.) a SIB1 request, the UE can attempt to receive the broadcast SIB1 assuming that SIB1 is being periodically broadcast. The SIB1 acquisition attempt can be initiated immediately after transmitting the SIB1 request and / or after a certain duration (e.g., after T0 milliseconds, S0 time slots, SF0 subframes, F0 frames, etc.). The default subcarrier interval can be used to calculate timing based on time slots and / or subframes. When the UE attempts to acquire the broadcast SIB1, the UE attempts to receive the SIB1 for a certain duration (e.g., after T1 milliseconds, S1 time slots, SF1 subframes, F1 frames, etc.), and the UE can retransmit the SIB1 request.

[0127] In the implementation scheme, before the UE starts timer T0 and attempts to receive the SIB1 broadcast, the UE can transmit the SIB1 request 'x' times repeatedly. The parameters 'x', T0 milliseconds, S0 time slots, SF0 subframes, F0 frames, T1 milliseconds, S1 time slots, SF1 subframes, and F1 frames can have specified values ​​and / or can be included in the columns of Table 7 above. In the implementation scheme, the UE can attempt to receive Ack (e.g., Msg2) and attempt to receive (e.g., get, acquire, etc.) the SIB1 broadcast before starting its timer T0.

[0128] The embodiments described in this disclosure also provide for determining the resources (e.g., radio resources) used to transmit on-demand SIB1 requests. In the following, the term PRACH resource should be understood to encompass a variety of different resources, including time resources, frequency resources, PRACH transmission preamble IDs, etc.

[0129] In the implementation, the UE transmits a "first signal" for on-demand SIB1 requests. For example, the UE can determine the PRACH resource for the first signal relative to the resources on which the UE detects the SSB transmission.

[0130] In the implementation scheme, the UE determines the frequency resources for the first signal based on the resources that the UE has already received from the SSB transmission. For example, the SSB is characterized by the NE transmission of one or more of the following elements (for a detailed description of the SSB and its contents, see the Background section): synchronization signals, such as PSS and / or SSS; PBCH, which may contain the MIB for the cell; and DM-RS.

[0131] In at least one instance, the frequency resources for the first signal can be determined relative to a frequency reference point (e.g., “point F”). In this instance, point F may be the lowest subcarrier at which one of the SSB and / or its components (e.g., PBCH, PSS, and / or SSS) is detected. See, for example, the “Time and Frequency Structure of the SS / PBCH Block” discussed above, where point F may be equivalent to subcarrier number 0 of the SSB (see also...). Figure 2 ).

[0132] In the implementation, the transmission of the first signal will be aligned with a resource block grid, where, in the frequency domain, a resource block consists of multiple subcarriers. In at least one instance, the UE may assume that point F coincides with the resource block grid. For example, the UE may assume that the lowest subcarrier used to transmit the first signal is the same subcarrier identified by point A. Point A is a logical point in the frequency such that the location of different bandwidth portions (BWPs) is determined to have a non-negative offset relative to point A. The BWP concept allows the network to configure different operating bandwidths for different UEs across the entire carrier bandwidth. From the cell's perspective, there exists a common resource block (CRB) grid relative to a common point in the frequency called point A. Specifically, point A is the frequency location of the first subcarrier of the common resource block CRB0 used for subcarrier spacing.

[0133] In some implementations, the SSB transmission (e.g., point F) may not be aligned with the resource block grid. In such implementations, a subcarrier offset may be used between point F and the resource block grid. Therefore, the subcarrier offset can be implemented in various ways. For example, the subcarrier offset may be a fixed value. Alternatively or additionally, the subcarrier offset may be indicated by and / or determined based on information contained in the SSB (e.g., in the MIB).

[0134] According to at least one implementation scheme, the subcarrier offset can be determined according to the following process: based on the value k SSB Determine the subcarrier offset (see TS 38.213), where, for example, for FR1, (or a subset of these values), or for FR2, (or a subset of these values). Different k from the corresponding range SSB The value can be associated with different subcarrier offsets. In this example, in FR1, the subcarrier offset (in units of subcarriers) can be determined in FR1 as follows: Or identified in FR2 In another example, the subcarrier offset can be determined based on lookup tables for FR1 and FR2. For instance, Table 6 below presents example subcarrier offset values ​​for FR1, and Table 7 below presents example subcarrier offset values ​​for FR2.

[0135] Table 6

[0136]

[0137] Table 7

[0138]

[0139] According to NR version 18, the value in FR1 and and the value in FR2 and It has been used for different purposes. Therefore, in FR1 and FR2 These can be used to indicate subcarrier offset. These two values ​​can indicate one or more of the bits or fields contained in the MIB used to determine the subcarrier offset. According to the implementation scheme, if FR1... Or in FR2 Then, one or more of controlResourceSetZero and searchSpaceZero (included in pdcch-ConfigSIB1) determine the subcarrier offset. In this case, it can be assumed that the original controlResourceSetZero and searchSpaceZero have fixed or pre-configured values, such as default values.

[0140] According to the implementation plan, the UE can determine two different time instances of PBCH reception. Value. If the two time instances are no more than a certain duration apart, the UE can interpret this, allowing the cell to determine the value based on the first PBCH (including...). The UE provides two periodic SIB1 transmissions (e.g., SIB1 broadcasts) based on the reception of the first value and the second PBCH (containing the first value). The UE requests an opportunity to transmit SIB1 by receiving the second value of the PBCH. According to the implementation scheme, the specific duration is an integer part of the basic periodic interval of the PBCH transmission. The basic periodic interval of the PBCH transmission can be an interval during which the UE can assume that the MIBs contained in the PBCH are static (e.g., do not change). For example, if the basic periodic interval of the PBCH transmission is 160 ms, then the specific duration can be one of {1; 2; 4; 5; 8; 10; 16; 20; 32; 40; 80; 160} ms.

[0141] In the implementation scheme, the UE determines the resources (e.g., PRACH resources) for the first signal based on indications detected in the SSB transmission. In at least one instance, the UE determines the PRACH resources based on the detected PCID. For example, the PCID can be determined based on a combination of detected PSS and SSS sequences, for example, ,in It is a value within [0; 335], and This corresponds to the PSS index, for example, a value from {0; 1; 2}.

[0142] In at least one instance, if the PCID is even, the UE determines the first PRACH timing (e.g., in the frequency domain), and if the PCID is odd, the UE determines the second PRACH timing (e.g., in the frequency domain). In at least one instance, the UE determines the second PRACH timing based on the first detected PSS index value (e.g., for...). Determine the first PRACH timing in the frequency domain, for the second detected PSS index value (e.g., for Determine the second PRACH timing in the frequency domain, and for the third detected PSS index value (e.g., for Determine the timing of the third PRACH in the frequency domain.

[0143] In at least one instance, the UE determines the PRACH timing in the frequency domain as follows: Regarding the determination For detailed information, refer to TS 38.211 v19.0.0, such as Clause 6.3.3.2 and Table 6.3.3.2-1.

[0144] In at least one instance, the MIB and / or PBCH contain information indicating resources for the first signal transmission. For example, one value of this information indicates that the UE will not transmit the first signal, e.g., it will not transmit a request for SIB1 transmission. In at least one instance, a preamble index (also known as a random access preamble ID) is associated with a PCID. Transmitting the associated preamble may imply a request for SIB1 transmission to the PCID associated with the preamble.

[0145] In the implementation scheme, the UE determines the PRACH configuration index based on information contained in the MIB or PBCH (e.g., based on the PCID). In 5G NR, the tables defining the PRACH configuration index are given in Tables 6.3.3.2-2 to 6.3.3.2-4 of TS 38.211 v19.1.0.

[0146] According to at least one implementation, the UE determines the PRACH configuration index for transmitting the request for SIB1 transmission from a subset of the PRACH configuration index set.

[0147] In at least one instance, the subset is formed by PRACH configuration indexes that share the same preamble format (e.g., preamble format 0).

[0148] In at least one instance, the subset is formed by PRACH configuration indices sharing the same number of subframes. For example, according to Table 6.3.3.2-2, the PRACH configuration index is {0-18, 28-46, 53-77, 88, 90, 93, 95-98, 101-102, 109-110, 113-114, 118, 120, 122, 124-127, 130-131, 138-139, 142-143, 148, 150, 152, 154-157, 1}. The subframes 60-161, 168-169, 172-173, 178, 180, 183, 185-188, 191-192, 199, 201, 203, 206-211, 219, 221, 223-226, 229-230, 237, 239, 241, 243-246, 249-250 are defined, and these configuration indices can form subsets.

[0149] In at least one instance, the subset is formed by PRACH configuration indices that share the same subframe number. For example, according to Table 6.3.3.2-2, the PRACH configuration indices {87, 89, 91-92, 94, 100, 108, 112, 129, 141, 147, 149, 151, 159, 171, 177, 179, 181-182, 184, 190, 198, 200, 202, 204-205, 214, 220, 222, 228, 236, 238, 240, 248} have defined subframes 4 and 9, and these configuration indices can form a subset.

[0150] In at least one instance, the subset is formed by PRACH configuration indexes that share the same start symbol. For example, according to Table 6.3.3.2-4, the PRACH configuration indexes {41, 43-44, 48, 50, 52, 54-55, 58} have a defined start symbol 5, and these configuration indexes can form a subset.

[0151] In at least one instance, the subset is formed by PRACH configuration indices that share the same number of PRACH slots within a subframe. For example, according to Tables 6.3.3.2-3, the PRACH configuration indices {0-66, 256-262} do not define the number of PRACH slots within a subframe, and these configuration indices can form subsets.

[0152] In at least one instance, the subset is formed by PRACH configuration indices that share the same number of time-domain PRACH opportunities within a PRACH slot. For example, according to Tables 6.3.3.2-3, the PRACH configuration indices {0-66, 256-262} do not define the number of time-domain PRACH opportunities within a PRACH slot, and these configuration indices can form subsets.

[0153] In at least one instance, the subset is formed by PRACH configuration indices that share the same PRACH duration. For example, according to Tables 6.3.3.2-3, PRACH configuration indices {145-168} have a defined PRACH duration of 12, and these configuration indices can form a subset.

[0154] According to the embodiments described herein, the first signal is one or more of the following: a RACH preamble, a Physical Uplink Control Channel (PUCCH) (e.g., a scheduling request), or a wake-up signal. In at least one instance, the MIB contains information specifying whether the UE needs to determine the resources for the first signal according to one or more embodiments described herein.

[0155] Figure 10 An example of a UE 1000 according to various aspects of this disclosure is shown. The UE 1000 may include a processor 1002, a memory 1004, a controller 1006, and a transceiver 1008. The processor 1002, memory 1004, controller 1006, and transceiver 1008, or various combinations thereof, or various components thereof, may be examples of components for performing the various aspects of this disclosure described herein. These components may be coupled via one or more interfaces (e.g., operatively, communicatively, functionally, electronically, electrically).

[0156] Processor 1002, memory 1004, controller 1006, and transceiver 1008, or various combinations thereof, or various components thereof, may be implemented in hardware (e.g., a circuit system). The hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), or other programmable logic device, or any combination thereof configured or otherwise supporting elements for performing the functions described in this disclosure.

[0157] Processor 1002 may include intelligent hardware devices (e.g., a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination thereof). In some embodiments, processor 1002 may be configured to operate memory 1004. In some embodiments, memory 1004 may be integrated into processor 1002. Processor 1002 may be configured to execute computer-readable instructions stored in memory 1004 to cause UE 1000 to perform various functions of this disclosure.

[0158] Memory 1004 may comprise volatile or non-volatile memory. Memory 1004 may store computer-readable, computer-executable code, including instructions that, when executed by processor 1002, cause UE 1000 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as memory 1004, or in another type of memory. Computer-readable media includes both non-transitory computer-readable storage media and communication media, and communication media includes any medium that facilitates the transfer of a computer program from one place to another. Non-transitory computer-readable storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0159] In some implementations, processor 1002 and memory 1004 coupled to processor 1002 may be configured to cause UE 1000 to perform one or more functions described herein (e.g., instructions stored in memory 1004 are executed by processor 1002). For example, processor 1002 may support wireless communication at UE 1000 according to the examples disclosed herein.

[0160] UE 1000 can be configured or used to support components for: receiving SSBs; and transmitting SIB1 requests at least in part based on SSBs, wherein the SSBs contain one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

[0161] Additionally, UE 1000 can be configured to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and further includes determining that the first parameter will be determined via the PBCH field if the value of the first parameter is greater than a specified value; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the first parameter includes at least one of the following: one or more first parameter values ​​for a first frequency range; or one or more second parameter values ​​for a second frequency range; the SSB further includes an indication of one or more PRACH resources for transmitting the SIB1 request, and further includes transmitting the SIB1 request on at least one of the one or more PRACH resources; further includes determining at least one index value using a combination of the first and second parameters; and determining at least one resource based at least in part on the index value.

[0162] Additionally, UE 1000 can be configured to support any one or a combination of the following components for operation: attempting to receive a broadcast SIB1 after transmitting an SIB request; further comprising one or more of the following: attempting to receive a broadcast SIB1 immediately after transmitting an SIB1 request; or attempting to receive a broadcast SIB1 after a first duration following the transmission of an SIB1 request; further comprising: retransmitting the SIB1 request at least in part based on the fact that an SIB1 has not been received after a second duration; the SSB containing a MIB, and further comprising: determining that the MIB contains an indication that cell access is prohibited; and transmitting the SIB1 request at least in part based on a first parameter configured for on-demand SIB1 requests, a second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited; further comprising receiving an SIB1, wherein the SIB1 contains an RMSI.

[0163] Alternatively, UE 1000 may support at least one memory (e.g., memory 1004) and at least one processor (e.g., processor 1002), said at least one processor being coupled to at least one memory and configured to cause the UE to: receive an SSB; and transmit an SIB1 request at least in part based on the SSB, the SSB containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

[0164] Additionally, UE 1000 can be configured to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and at least one processor is configured to cause the UE to: determine, if the value of the first parameter is greater than a specified value, that the first parameter will be determined via the PBCH field; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the first parameter includes at least one of the following: one or more first parameter values ​​for a first frequency range; or one or more second parameter values ​​for a second frequency range; the SSB further includes an indication of one or more PRACH resources for transmitting the SIB1 request, and at least one processor is configured to cause the UE to transmit the SIB1 request on at least one PRACH resource among the one or more PRACH resources; at least one processor is configured to cause the UE to: determine at least one index value using a combination of the first and second parameters; and determine at least one resource at least in part based on the index value.

[0165] Additionally, UE 1000 can be configured to support any one or a combination of the following: at least one processor is configured to cause the UE to attempt to receive a broadcast SIB1 after transmitting an SIB request; at least one processor is configured to cause the UE to: attempt to receive a broadcast SIB1 immediately after transmitting an SIB1 request; or attempt to receive a broadcast SIB1 after a first duration following the transmission of an SIB1 request; at least one processor is configured to cause the UE to retransmit the SIB1 request at least in part based on the fact that no SIB1 was received after a second duration; the SSB includes a MIB, and at least one processor is configured to cause the UE to: determine that the MIB contains an indication that cell access is prohibited; and transmit the SIB1 request at least in part based on a first parameter configured for on-demand SIB1 requests, a second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited; at least one processor is configured to cause the UE to receive an SIB1, wherein the SIB1 includes an RMSI.

[0166] Controller 1006 can manage the input and output signals of UE 1000. Controller 1006 can also manage peripheral devices not integrated into UE 1000. In some implementations, controller 1006 can utilize an operating system, such as iOS®, Android®, Windows®, or other operating systems. In some implementations, controller 1006 can be implemented as part of processor 1002.

[0167] In some embodiments, UE 1000 may include at least one transceiver 1008. In some other embodiments, UE 1000 may have more than one transceiver 1008. Transceiver 1008 may represent a wireless transceiver. Transceiver 1008 may include one or more receiver chains 1010, one or more transmitter chains 1012, or a combination thereof.

[0168] Receiver chain 1010 can be configured to receive signals (e.g., control information, data, packets) via a wireless medium. For example, receiver chain 1010 may include one or more antennas for receiving signals over the air or via a wireless medium. Receiver chain 1010 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. Receiver chain 1010 may include at least one demodulator configured to demodulate the received signal and obtain the transmitted data by reversing the modulation technique applied during signal transmission. Receiver chain 1010 may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0169] Transmitter chain 1012 can be configured to generate and transmit signals (e.g., control information, data, packets). Transmitter chain 1012 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. At least one modulator may be configured to support one or more techniques, such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes like phase shift keying (PSK) or quadrature amplitude modulation (QAM). Transmitter chain 1012 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over a wireless medium. Transmitter chain 1012 may also include one or more antennas for transmitting the amplified signal over the air or wireless medium.

[0170] Figure 11 An example of a processor 1100 according to various aspects of this disclosure is shown. Processor 1100 may be an example of a processor configured to perform various operations according to the examples described herein. Processor 1100 may include a controller 1102 configured to perform various operations according to the examples described herein. Processor 1100 may optionally include at least one memory 1104, which may be, for example, an L1 / L2 / L3 cache. Additionally or alternatively, processor 1100 may optionally include one or more arithmetic logic units (ALUs) 1106. One or more of these components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses).

[0171] Processor 1100 may be a processor chipset and includes a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, and reading) according to the examples described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory native to the processor chipset (e.g., processor 1100) or other memory (e.g., random access memory (RAM), read-only memory (ROM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), static RAM (SRAM), ferroelectric RAM (FeRAM), magnetic RAM (MRAM), resistive RAM (RRAM), flash memory, phase-change memory (PCM), etc.).

[0172] Controller 1102 can be configured to manage and coordinate various operations of processor 1100 (e.g., signaling, receiving, acquiring, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, and reading) to enable processor 1100 to support various operations according to the examples described herein. For example, controller 1102 can operate as a control unit of processor 1100, generating control signals that manage the operation of various components of processor 1100. These control signals include enabling or disabling functional units, selecting data paths, initiating memory accesses, and coordinating the timing of operations.

[0173] Controller 1102 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from memory 1104 and determine subsequent instructions to be executed to enable processor 1100 to support various operations according to the examples described herein. Controller 1102 may be configured to track the memory addresses of instructions associated with memory 1104. Controller 1102 may be configured to decode instructions to determine the operations to be performed and the operands involved. For example, controller 1102 may be configured to interpret the instructions and determine control signals to be output to other components of processor 1100 to enable processor 1100 to support various operations according to the examples described herein. Alternatively or additionally, controller 1102 may be configured to manage data flow within processor 1100. Controller 1102 may be configured to transfer data between control registers, ALU 1106, and other functional units of processor 1100.

[0174] Memory 1104 may include one or more caches (e.g., memory native to or contained within processor 1100, or other memory such as RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.). In some embodiments, memory 1104 may reside within or on top of the processor chipset (e.g., native to processor 1100). In some other embodiments, memory 1104 may reside external to the processor chipset (e.g., remotely to processor 1100).

[0175] Memory 1104 may store computer-readable, computer-executable code, including instructions that, when executed by processor 1100, cause processor 1100 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as system memory, or in another type of memory. Controller 1102 and / or processor 1100 may be configured to execute the computer-readable instructions stored in memory 1104 to cause processor 1100 to perform various functions. For example, processor 1100 and / or controller 1102 may be coupled to or connected to memory 1104, processor 1100, and controller 1102, and may be configured to perform the various functions described herein. In some instances, processor 1100 may include multiple processors, and memory 1104 may include multiple memories. One or more of the multiple processors may be coupled to or connected to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein.

[0176] One or more ALUs 1106 can be configured to support various operations according to the examples described herein. In some embodiments, one or more ALUs 1106 may reside within or on a processor chipset (e.g., processor 1100). In some other embodiments, one or more ALUs 1106 may reside outside the processor chipset (e.g., processor 1100). One or more ALUs 1106 can perform one or more calculations such as addition, subtraction, multiplication, and division of data. For example, one or more ALUs 1106 receive input operands and an opcode, the opcode determining the operation to be performed. One or more ALUs 1106 may be configured with various logic and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate data according to the operations. Alternatively, one or more ALUs 1106 may support logical operations such as AND, OR, XOR, NOR, and NAND, thereby enabling one or more ALUs 1106 to handle conditional operations, comparisons, and bitwise operations.

[0177] Processor 1100 may support wireless communication according to the examples disclosed herein. Processor 1100 may be configured or used to support at least one controller (e.g., controller 1102) coupled to at least one memory (e.g., memory 1104) and configured to cause the processor to receive SSBs; and to transmit SIB1 requests at least in part based on SSBs, the SSBs containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

[0178] Additionally, processor 1100 may be configured or used to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and wherein at least one controller is configured to cause the processor to: determine, if the value of the first parameter is greater than a specified value, that the first parameter will be determined via a PBCH field; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; at least one controller is configured to cause the processor to: attempt to receive broadcast SIB1 immediately after transmitting the SIB1 request; or attempt to receive broadcast SIB1 after a first duration following the transmission of the SIB1 request.

[0179] Additionally, the processor 1100 may be configured or used to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and at least one controller is configured to cause the processor to: determine, if the value of the first parameter is greater than a specified value, that the first parameter will be determined via a PBCH field; the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; the first parameter includes at least one of the following: one or more first parameter values ​​for a first frequency range; or one or more second parameter values ​​for a second frequency range; the SSB further includes an indication of one or more PRACH resources for transmitting the SIB1 request, and at least one controller is configured to cause the processor to transmit the SIB1 request on at least one of the one or more PRACH resources; at least one processor is configured to cause the UE to: determine at least one index value using a combination of the first and second parameters; and determine at least one resource at least in part based on the index value.

[0180] Additionally, processor 1100 may be configured or used to support any one or a combination of the following: wherein at least one controller is configured to cause the processor to attempt to receive a broadcast SIB1 after transmitting an SIB request; at least one processor is configured to cause the UE to: attempt to receive a broadcast SIB1 immediately after transmitting an SIB1 request; or attempt to receive a broadcast SIB1 after a first duration following the transmission of an SIB1 request; at least one controller is configured to cause the processor to retransmit the SIB1 request at least in part based on the fact that an SIB1 has not been received after a second duration; the SSB contains a Master Information Block (MIB), and wherein at least one processor is configured to cause the UE to: determine that the MIB contains an indication that cell access is prohibited; and transmit the SIB1 request at least in part based on a first parameter configured for on-demand SIB1 requests, a second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited; at least one controller is configured to cause the processor to receive an SIB1, the SIB1 containing an RMSI.

[0181] Processor 1100 may support wireless communication according to the examples disclosed herein. Processor 1100 may be configured or used to support at least one controller (e.g., controller 1102), said at least one controller being coupled to at least one memory (e.g., memory 1104), and configured to cause the processor to: transmit an SSB containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests; receive an SIB1 request; and transmit an SIB1 at least in part based on the SIB1 request.

[0182] Additionally, the processor 1100 may be configured or used to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; at least one controller may be used to enable the processor to transmit an indication of one or more resources requested by SIB1, the indication including at least one index value generated using a combination of the first and second parameters.

[0183] Figure 12Examples of NE 1200 according to various aspects of this disclosure are shown. NE 1200 may include a processor 1202, a memory 1204, a controller 1206, and a transceiver 1208. The processor 1202, memory 1204, controller 1206, or transceiver 1208, or various combinations thereof, or various components thereof, may be examples of components for performing the various aspects of this disclosure described herein. These components may be coupled via one or more interfaces (e.g., operatively, communicatively, functionally, electronically, electrically).

[0184] Processor 1202, memory 1204, controller 1206, or transceiver 1208, or various combinations thereof, or various components thereof, may be implemented in hardware (e.g., a circuit system). The hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), or other programmable logic device, or any combination thereof configured or otherwise supporting components for performing the functions described in this disclosure.

[0185] Processor 1202 may include intelligent hardware devices (e.g., a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination thereof). In some embodiments, processor 1202 may be configured to operate memory 1204. In some embodiments, memory 1204 may be integrated into processor 1202. Processor 1202 may be configured to execute computer-readable instructions stored in memory 1204 to cause NE 1200 to perform various functions of this disclosure.

[0186] Memory 1204 may comprise volatile or non-volatile memory. Memory 1204 may store computer-readable, computer-executable code, including instructions that, when executed by processor 1202, cause NE 1200 to perform the various functions described herein. The code may be stored in a non-transitory computer-readable medium, such as memory 1204, or in another type of memory. Computer-readable media includes both non-transitory computer-readable storage media and communication media, and communication media includes any medium that facilitates the transfer of a computer program from one place to another. Non-transitory computer-readable storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0187] In some implementations, processor 1202 and memory 1204 coupled to processor 1202 may be configured to cause NE 1200 to perform one or more functions described herein (e.g., instructions stored in memory 1204 are executed by processor 1202). For example, processor 1202 may support wireless communication at NE 1200 according to the examples disclosed herein.

[0188] The NE 1200 can be configured or used to support components for: transmitting an SSB containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests; receiving SIB1 requests; and transmitting SIB1 requests at least in part based on the SIB1 requests.

[0189] Additionally, the NE 1200 can be configured or used to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and the second parameter includes a PDCCH configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; further including an indication of one or more resources for transmitting SIB1 requests, the indication including at least one index value generated using a combination of the first and second parameters.

[0190] Alternatively, the NE 1200 may support at least one memory (e.g., memory 1204) and at least one processor (e.g., processor 1202), said at least one processor being coupled to at least one memory and configured to cause the NE to: transmit an SSB containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests; receive SIB1 requests; and transmit SIB1 at least in part based on the SIB1 requests.

[0191] Additionally, the NE 1200 can be configured to support any one or a combination of the following: wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and the second parameter includes a physical downlink control channel (PDCCH) configuration for receiving SIB1, and the second parameter includes common CORESET information, a common search space, and one or more PDCCH parameters; at least one processor is configured to cause the NE to transmit an indication for transmitting one or more resources for the SIB1 request, the indication including at least one index value generated using a combination of the first and second parameters.

[0192] Controller 1206 can manage the input and output signals of NE 1200. Controller 1206 can also manage peripheral devices not integrated into NE 1200. In some implementations, controller 1206 can utilize an operating system such as iOS®, Android®, Windows®, or other operating systems. In some implementations, controller 1206 can be implemented as part of processor 1202.

[0193] In some embodiments, the NE 1200 may include at least one transceiver 1208. In some other embodiments, the NE 1200 may have more than one transceiver 1208. The transceiver 1208 may represent a wireless transceiver. The transceiver 1208 may include one or more receiver chains 1210, one or more transmitter chains 1212, or a combination thereof.

[0194] Receiver chain 1210 can be configured to receive signals (e.g., control information, data, packets) via a wireless medium. For example, receiver chain 1210 may include one or more antennas for receiving signals over the air or via a wireless medium. Receiver chain 1210 may include at least one amplifier (e.g., a low-noise amplifier (LNA)) configured to amplify the received signal. Receiver chain 1210 may include at least one demodulator configured to demodulate the received signal and obtain the transmitted data by reversing the modulation technique applied during signal transmission. Receiver chain 1210 may include at least one decoder for decoding the demodulated signal to receive the transmitted data.

[0195] Transmitter chain 1212 can be configured to generate and transmit signals (e.g., control information, data, packets). Transmitter chain 1212 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. At least one modulator may be configured to support one or more techniques, such as amplitude modulation (AM), frequency modulation (FM), or digital modulation schemes like phase shift keying (PSK) or quadrature amplitude modulation (QAM). Transmitter chain 1212 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over a wireless medium. Transmitter chain 1212 may also include one or more antennas for transmitting the amplified signal over the air or wireless medium.

[0196] Figure 13 A flowchart of method 1300 according to various aspects of this disclosure is shown. The operation of the method can be implemented by the UE described herein. In some embodiments, the UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. It should be noted that the method described herein describes possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are possible.

[0197] At 1302, the method may include receiving an SSB. The operation of 1302 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 1302 may be referenced... Figure 10 The UE described is used for execution.

[0198] In 1304, the method may include transmitting SIB1 requests at least in part based on an SSB, the SSB including one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests. Operation of 1304 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 1304 may be referenced from... Figure 10 The UE described is used for execution.

[0199] Figure 14 A flowchart of a method 1400 according to various aspects of this disclosure is shown. The operation of the method can be implemented by the NE described herein. In some embodiments, the NE can execute a set of instructions to control the functional elements of the NE to perform the described functions. It should be noted that the method described herein describes possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are possible.

[0200] At 1402, the method may include a transport SSB containing one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests. Operation of 1402 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 1402 may be referenced from... Figure 12 The described NE is used for execution.

[0201] At 1404, the method may include receiving an SIB1 request. The operation of 1404 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 1404 may be referenced... Figure 12 The UE described is used for execution.

[0202] At 1406, the method may include transmitting SIB1 at least in part based on the SIB1 request. The operation of 1406 may be performed according to the examples described herein. In some embodiments, aspects of the operation of 1406 may be referenced... Figure 12 The UE described is used for execution.

[0203] The description provided herein enables those skilled in the art to make or use this disclosure. Those skilled in the art will recognize various modifications to this disclosure, and the general principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but is given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE) for wireless communication, comprising: At least one memory; as well as At least one processor, coupled to the at least one memory, and capable of enabling the UE to: Receive synchronization signal block SSB; as well as System Information Block 1 (SIB1) requests are transmitted at least in part based on the SSB, which includes one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

2. The UE of claim 1, wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and wherein the at least one processor is configured to enable the UE to: determine, if the value of the first parameter is greater than a specified value, that the first parameter will be determined via the Physical Broadcast Channel (PBCH) field.

3. The UE according to claim 1, wherein the second parameter includes a physical downlink control channel (PDCCH) configuration for receiving SIB1, and the second parameter includes common control resource set (CORESET) information, a common search space, and one or more PDCCH parameters.

4. The UE according to claim 1, wherein the first parameter includes at least one of the following: One or more first parameter values ​​for a first frequency range; or One or more second parameter values ​​for the second frequency range.

5. The UE of claim 1, wherein the SSB further includes an indication of one or more Physical Random Access Channel (PRACH) resources for transmitting the SIB1 request, and wherein the at least one processor is configured to enable the UE to transmit the SIB1 request on at least one of the one or more PRACH resources.

6. The UE according to claim 5, wherein the at least one processor is configured to cause the UE to: At least one index value is determined using a combination of the first parameter and the second parameter; and The at least one resource is determined at least in part based on the index value.

7. The UE according to claim 1, wherein the at least one processor can be configured to cause the UE to attempt to receive a broadcast SIB1 after transmitting the SIB1 request.

8. The UE of claim 7, wherein the at least one processor is configured to cause the UE to include one or more of the following: Immediately after transmitting the SIB1 request, attempt to receive the broadcast SIB1; or Attempt to receive the broadcast SIB1 after a first duration following the transmission of the SIB1 request.

9. The UE of claim 8, wherein the at least one processor is configured to cause the UE to retransmit the SIB1 request at least in part based on the fact that SIB1 has not been received after a second duration.

10. The UE of claim 1, wherein the SSB includes a Master Information Block (MIB), and wherein the at least one processor is configured to enable the UE to: The MIB is determined to include an indication that cell access is prohibited; and The SIB1 request is transmitted at least in part based on the first parameter configured for on-demand SIB1 requests, the second parameter configured for on-demand SIB1 requests, and the MIB indicating that cell access is prohibited.

11. The UE of claim 1, wherein the at least one processor is configured to enable the UE to receive SIB1, the SIB1 including Residual Minimum System Information (RMSI).

12. A network device NE for wireless communication, comprising: At least one memory; as well as At least one processor, coupled to the at least one memory and capable of enabling the NE: Transmit a synchronization signal block SSB, the SSB including one or more of a first parameter configured for on-demand system information block 1 SIB1 request or a second parameter configured for on-demand SIB1 request; Receive SIB1 request; as well as SIB1 is transmitted at least in part based on the SIB1 request.

13. The NE of claim 12, wherein the first parameter includes a frequency domain offset between the SSB and the resource block grid in terms of the number of subcarriers, and the second parameter includes a physical downlink control channel (PDCCH) configuration for receiving SIB1, wherein the second parameter includes common control resource set (CORESET) information, a common search space, and one or more PDCCH parameters.

14. The NE of claim 12, wherein the at least one processor can be configured to cause the NE to transmit an indication for transmitting one or more resources for the SIB1 request, the indication including at least one index value generated using a combination of the first parameter and the second parameter.

15. A method performed by a user equipment (UE), the method comprising: Receive synchronization signal block SSB; as well as System Information Block 1 (SIB1) requests are transmitted at least in part based on the SSB, which includes one or more of a first parameter configured for on-demand SIB1 requests or a second parameter configured for on-demand SIB1 requests.

16. The method of claim 15, wherein the first parameter includes a frequency domain offset, in terms of the number of subcarriers, between the SSB and the resource block grid, and wherein the method further comprises: If the value of the first parameter is greater than a specified value, it is determined that the first parameter will be determined via the Physical Broadcast Channel (PBCH) field.

17. The method of claim 15, wherein the second parameter includes a physical downlink control channel (PDCCH) configuration for receiving SIB1, and the second parameter includes common control resource set (CORESET) information, a common search space, and one or more PDCCH parameters.

18. The method of claim 15, wherein the first parameter comprises at least one of the following: One or more first parameter values ​​for a first frequency range; or One or more second parameter values ​​for the second frequency range.

19. The method of claim 15, wherein the SSB further includes an indication of one or more Physical Random Access Channel (PRACH) resources for transmitting the SIB1 request, and wherein the method further includes transmitting the SIB1 request on at least one of the one or more PRACH resources.

20. A method performed by a network equipment (NE), the method comprising: Transmit a synchronization signal block SSB, the SSB including one or more of a first parameter configured for on-demand system information block 1 SIB1 request or a second parameter configured for on-demand SIB1 request; Receive SIB1 request; as well as SIB1 is transmitted at least in part based on the SIB1 request.

Images