System Information Block acquisition for wireless networks

Abstract

Methods, systems, and apparatus for wireless communications are described. A user equipment (UE) may receive a set of system information blocks (SIBs) common to a set of cells of a non-terrestrial network (NTN), the set of SIBs indicating one or more parameters common to the set of cells for communications with the set of cells. The UE may receive a first SIB associated with a first cell in the set of cells of the NTN, wherein the first SIB includes cell-specific information indicating a first set of cell-specific parameters for communications with the first cell. The UE may then communicate with the first cell using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 63 / 024,366, filed May 13, 2020, by Shrestha et al., entitled “System Information Acquisition for Wireless Networks”; and U.S. Patent Application No. 17 / 317,768, filed May 11, 2021, by Shrestha et al., entitled “System Information Acquisition for Wireless Networks”; each of which is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications, and more particularly, to system information block (SIB) acquisition for wireless networks. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, etc. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (e.g., long term evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication for multiple communication devices (which may also be referred to as user equipment (UE)).

[0005] Some wireless communication systems may include one or more non-terrestrial networks (NTNs). In such NTNs, the continuous movement of satellites may result in continuous movement of cell coverage relative to a UE. Summary of the Invention

[0006] The described technology relates to improved methods, systems, devices and apparatus that support improved system information block (SIB) acquisition. In the context of non-terrestrial networks (NTNs), the continuous movement of satellites may result in continuous movement of cell coverage. User equipment (UE) may experience changing cell coverage (e.g., switching between cells) due to this continuous movement, even if the UE is stationary. In some cases, due to the movement of the satellites of the NTN, the UE may experience a handover between cells approximately every thirteen seconds. These frequent handovers may cause the UE to acquire a new SIB associated with a new cell each time a handover is performed. However, the signaling required for frequent SIB acquisition may result in significant resource and signaling overhead, as well as increased power consumption at the UE.

[0007] In summary, the described techniques provide improved communications that can improve SIB acquisition and reduce the number of times a UE can acquire a new SIB for a new cell. In some aspects, a UE can acquire a first SIB for a first cell of an NTN and determine whether the first SIB associated with the first cell can be used for communication with an additional cell of the NTN. If the first SIB associated with the first cell is valid and can be used for communication with a second cell, the UE can use the first SIB associated with the first cell for communication with the second cell, thereby avoiding acquiring a new SIB associated with the second cell. In some cases, the UE can acquire a synchronization signal block (SSB) or a master information block (MIB) associated with the second cell, where the SIB and / or MIB indicates whether the first SIB associated with the first cell can also be used for communication with the second cell. Additionally or alternatively, the UE can determine whether the first SIB associated with the first cell is still valid or can be used for communication with the second cell based on whether the first SIB was received during a validity period associated with the first SIB.

[0008] Additionally or alternatively, the UE may receive a SIB set indicating a parameter set that is common to a set of cells of the NTN. In this example, upon entering a new cell of the NTN, the UE may acquire cell-specific parameters specific to the new cell and need not acquire a complete parameter set. In the event that the new cell utilizes only a parameter set that is common to a set of cells, the UE may receive an indication from the new cell indicating that the new cell utilizes previously acquired parameters, thereby indicating that the UE does not need to acquire a new SIB for the new cell.

[0009] A method for wireless communication at a UE is described. The method may include receiving a set of SIBs common to a set of cells of an NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells; receiving a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell; and communicating with the first cell using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0010] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to perform the following operations: receive a set of SIBs that are common to a set of cells of an NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells; receive a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information, the cell-specific information indicating a first set of cell-specific parameters for communication with the first cell; and communicate with the first cell using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0011] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving a set of SIBs common to a set of cells of an NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells; means for receiving a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell; and means for communicating with the first cell using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0012] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: receive a set of SIBs common to a set of cells of an NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells; receive a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell; and communicate with the first cell using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for identifying a cell-specific parameter in the first cell-specific parameter set that is different from a common parameter indicated by the SIB set that is common to the set of cells, the cell-specific information included in the first SIB indicating the cell-specific parameter, wherein communicating with the first cell may be based on identifying the cell-specific parameter.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for identifying a difference between common parameters indicated by the SIB set common to the set of cells and cell-specific parameters in the first cell-specific parameter set, additional common parameters associated with the first cell, or both, wherein the cell-specific information included in the first SIB of the first cell indicates the difference, wherein communicating with the first cell may be based on identifying the difference.

[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for communicating with a second cell using the one or more parameters indicated by the SIB set that may be common to the set of cells.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for identifying the set of SIBs that may be common to the set of cells based on geographic coverage area, tracking area, or both.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving a set of non-terrestrial network-specific parameters, a set of satellite-specific parameters, or both based on a configured period or based on receiving an indication to obtain a set of non-terrestrial network-specific parameters, a set of satellite-specific parameters, or both.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for avoiding receiving a non-terrestrial network-specific set of parameters, a satellite-specific set of parameters, or both based on receiving an indication of a change to the first cell-specific set of parameters or a change to the one or more parameters that may be common to the set of cells.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: receiving a configuration message, the configuration message including an indication of a set of downlink resources for receiving a SIB including the cell-specific information, wherein receiving the first SIB for the first cell may be based on receiving the configuration message.

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving a downlink message from the first cell, the downlink message including an indication of a change in at least one cell-specific parameter in the first cell-specific parameter set associated with the first cell or at least one parameter in the one or more parameters common to the set of cells; updating the first SIB associated with the first cell based on receiving the downlink message; and communicating with the first cell based on updating the first SIB.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving a second SIB associated with a second cell in the set of cells of the NTN, the second SIB including second cell-specific information, the second cell-specific information indicating a second set of cell-specific parameters for communication with the second cell; and communicating with the second cell using the second set of cell-specific parameters associated with the cell-specific information of the first cell and at least a second subset of the one or more parameters common to the set of cells.

[0022] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving an indication of a neighbor cell list associated with the first cell based on receiving the first SIB from the first cell.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving an indication of a period, a next update time, or both associated with an additional SIB based on receiving the first SIB, the additional SIB being associated with at least one cell of the neighbor cell list.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for: identifying that an update to the first cell-specific parameter set associated with the first cell is available; determining that an expected duration until a cell reselection process with a second cell is initiated satisfies a threshold; avoiding updating the first cell-specific parameter set based on determining that the expected duration satisfies the threshold; and performing the cell reselection process with the second cell based on determining that the expected duration satisfies the threshold.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving the update to the first set of cell-specific parameters associated with the first cell after performing the cell reselection procedure.

[0026] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for: identifying that an update to the first cell-specific parameter set associated with the first cell is available; based on identifying that the update to the first cell-specific parameter set for the first cell is available to avoid performing an attach procedure with the first cell; and based on identifying that the update to the first cell-specific parameter set for the first cell is available, performing an attach procedure after receiving the update to the first cell-specific parameter set associated with the first cell.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the one or more parameters common to the set of cells may be used by each cell of the NTN associated with a satellite of the NTN.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the one or more parameters common to the set of cells may be used by a subset of cells of the NTN associated with a satellite of the NTN.

[0029] A method for wireless communication at a UE is described. The method may include: communicating with a first cell of an NTN using a parameter set associated with the first cell; receiving a control message associated with a second cell of the NTN, the control message including an indication that the parameter set associated with the first cell is usable for communicating with the second cell; determining, based on receiving the indication, that the parameter set associated with the first cell is usable for communicating with the second cell; and communicating with the second cell of the NTN using the parameter set based on determining that the parameter set stored by the UE for the first cell is usable for communicating with the second cell.

[0030] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to perform the following operations: communicate with a first cell of an NTN using a parameter set associated with the first cell; receive a control message associated with a second cell of the NTN, the control message including an indication that the parameter set associated with the first cell can be used for communication with the second cell; determine, based on receiving the indication, that the parameter set associated with the first cell can be used for communication with the second cell; and communicate with the second cell of the NTN using the parameter set based on determining that the parameter set stored by the UE for the first cell can be used for communication with the second cell.

[0031] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for communicating with a first cell of an NTN using a parameter set associated with the first cell; means for receiving a control message associated with a second cell of the NTN, the control message including an indication that the parameter set associated with the first cell can be used for communicating with the second cell; means for determining, based on receiving the indication, that the parameter set associated with the first cell can be used for communicating with the second cell; and means for communicating with the second cell of the NTN using the parameter set stored by the UE for the first cell based on determining that the parameter set can be used for communicating with the second cell.

[0032] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: communicate with a first cell of an NTN using a parameter set associated with the first cell; receive a control message associated with a second cell of the NTN, the control message including an indication that the parameter set associated with the first cell can be used for communication with the second cell; determine, based on receiving the indication, that the parameter set associated with the first cell can be used for communication with the second cell; and communicate with the second cell of the NTN using the parameter set stored by the UE for the first cell based on determining that the parameter set can be used for communication with the second cell.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving a second indication of a validity period associated with the parameter set, wherein determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell can be based on the validity period.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving a second control message associated with a third cell of the NTN; and selecting to communicate with the second cell based on the parameter set stored by the UE being associated with the second cell instead of the third cell, wherein communicating with the second cell may be based on selecting to communicate with the second cell.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving a radio resource control (RRC) message or a non-access stratum (NAS) message including one or more SIB sets associated with the set of cells of the NTN based on a predicted path of the UE relative to the NTN, wherein the set of cells includes the first cell and the second cell, wherein communicating with the first cell may be based on receiving the RRC message or the NAS message.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell may include operations, features, units, or instructions for performing the following operations: determining that the parameter set remains unchanged during the validity period based on receiving the indication.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following operations: determining that the parameter set stored by the UE for the first cell is not usable for communicating with a third cell of the NTN; receiving one or more SIBs associated with the third cell based on determining that the parameter set stored by the UE for the first cell is not usable for communicating with the third cell; and communicating with the third cell based on receiving the one or more SIBs.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving one or more SIBs associated with the first cell, the one or more SIBs including the set of parameters for communicating with the first cell of the NTN, wherein communicating with the first cell may be based on receiving the one or more SIBs; and determining that the first cell belongs to a set of cells based on a second indication of a set of physical cell identifiers associated with the set of parameters.

[0039] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for receiving a downlink message comprising a neighbor cell list associated with the first cell and one or more parameters associated with at least one cell in the neighbor cell list, wherein communicating with the first cell may be based on receiving the downlink message.

[0040] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for selecting the second cell as part of an intra-frequency cell reselection process or an inter-frequency cell reselection process with the second cell, wherein communicating with the second cell may be based on selecting the second cell; and avoiding updating the neighbor cell list associated with the second cell based on selecting the second cell as part of the intra-frequency cell reselection process or the inter-frequency cell reselection process.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for selecting the second cell as part of an intra-frequency cell reselection process with the second cell, wherein communicating with the second cell may be based on selecting the second cell; and updating the neighbor cell list associated with the second cell based on selecting the second cell as part of the intra-frequency cell reselection process.

[0042] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for selecting the second cell as part of an inter-frequency cell reselection process with the second cell, wherein communicating with the second cell may be based on selecting the second cell; and updating the neighbor cell list associated with the second cell based on selecting the second cell as part of the inter-frequency cell reselection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 An example of a wireless communication system supporting system information block (SIB) acquisition for a wireless network in accordance with aspects of the present disclosure is illustrated.

[0044] Figure 2 An example of a wireless communication system supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown.

[0045] Figure 3 An example of a wireless communication system supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown.

[0046] Figure 4 An example of a process flow supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown.

[0047] Figure 5 An example of a process flow supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown.

[0048] Figure 6 and 7 A block diagram of a device supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown.

[0049] Figure 8 A block diagram of a communications manager supporting SIB acquisition for a wireless network is shown in accordance with aspects of the present disclosure.

[0050] Figure 9A diagram is shown of a system including devices supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure.

[0051] Figure 10 and 11 A block diagram of a device supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown.

[0052] Figure 12 A block diagram of a communications manager supporting SIB acquisition for a wireless network is shown in accordance with aspects of the present disclosure.

[0053] Figure 13 A diagram is shown of a system including devices supporting SIB acquisition for a wireless network in accordance with aspects of the present disclosure.

[0054] Figures 14 to 17 A flow chart illustrating a method of supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0055] Some wireless communication systems may include one or more non-terrestrial networks (NTNs). In some NTNs, the continuous movement of satellites may result in continuous movement of cell coverage. A user equipment (UE) may experience changing cell coverage (e.g., switching between cells) due to this continuous movement, even if the UE is stationary. In some cases, due to the movement of the satellites of the NTN, the UE may be switched between cells approximately every thirteen seconds. These frequent switches may cause the UE to acquire a new system information block (SIB) associated with the new cell each time a switch is performed (e.g., every thirteen seconds). However, the signaling required for frequent SIB acquisitions may result in significant resource and signaling overhead, as well as increased power consumption at the UE.

[0056] To address issues associated with frequent SIB acquisition in the context of wireless communication systems (e.g., NTNs), techniques are described for reducing the number of times a UE may acquire SIBs for new cells. The UE may acquire a first SIB for a first cell of the NTN and determine whether the first SIB associated with the first cell can be used for communication with additional cells of the NTN. If the first SIB associated with the first cell is valid and usable for communication with a second cell, the UE may use the first SIB associated with the first cell for communication with the second cell, thereby avoiding acquiring a new SIB associated with the second cell. Using SIBs in this manner may create a need to signal whether such SIBs are valid for the second cell. In some cases, the UE may acquire a synchronization signal block (SSB) or master information block (MIB) associated with the second cell, where the SIB and / or MIB indicate whether the first SIB associated with the first cell can also be used for communication with the second cell. Additionally or alternatively, the UE may determine whether the first SIB associated with the first cell is still valid or usable for communication with the second cell based on whether the first SIB was received during a validity period associated with the first SIB.

[0057] Additionally or alternatively, the UE may receive a SIB set indicating a set of parameters that are common to a set of cells of the NTN. In this example, upon entering a new cell of the NTN, the UE may acquire cell-specific parameters specific to the new cell and may not need to acquire the full set of SIBs. In the event that the new cell utilizes only a set of parameters that are common to a set of cells, the UE may receive an indication from the new cell indicating that the new cell utilizes previously acquired SIBs, thereby indicating that the UE does not need to acquire new SIBs for the new cell.

[0058] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are also illustrated by example process flow diagrams. Aspects of the present disclosure are further illustrated by apparatus diagrams, system diagrams, and flow diagrams related to the change of tracking area codes for wireless networks and are described with reference to these diagrams.

[0059] Figure 1An example of a wireless communication system 100 that supports SIB acquisition for a wireless network in accordance with aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices, or any combination thereof.

[0060] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100 and may be devices of varying forms or capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage areas 110 may be examples of geographic areas over which base stations 105 and UEs 115 may support transmission of signals according to one or more radio access technologies.

[0061] UEs may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Figure 1 1. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein are capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network devices (e.g., core network nodes, relays, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 shown.

[0062] The base stations 105 can communicate with the core network 130, or communicate with each other, or perform both operations described above. For example, the base stations 105 can interface with the core network 130 via one or more backhaul links 155 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 can communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130) on the backhaul links 155 (e.g., via X2, Xn, or other interfaces), or perform both operations described above. In some examples, the backhaul links 155 can be or include one or more wireless links.

[0063] One or more of the base stations 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home evolved Node B, or some other appropriate terminology.

[0064] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, among other examples, which may be implemented in various items such as appliances, vehicles, meters, and other examples.

[0065] The UE 115 described herein is capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, such as Figure 1 Each of the UEs 115 may include a UE communication manager 101 configured to facilitate wireless communications between the respective UE 115 and other wireless devices (eg, other UEs 115, base stations 105, satellites 120).

[0066] The UE 115 and the base station 105 can communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a collection of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier used for the communication link 125 can include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate operation for the carrier, user data, or other signaling. The wireless communication system 100 can support communication with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0067] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may comprise one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communications with the UE 115.

[0068] The basic time unit (which may be referred to as T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N fThe time intervals for the base station 105 or the UE 115 may be expressed as multiples of a maximum supported discrete Fourier transform (DFT) size. The time intervals of the communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0069] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of a cyclic prefix added in front of each symbol period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0070] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in the form of bursts of shortened TTIs (sTTIs)).

[0071] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier using one or more of time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a number of symbol periods and may extend over the system bandwidth of a carrier or over a subset of the system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for the control channel candidates may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with the coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0072] In some examples, base station 105 can be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, but the different geographic coverage areas 110 can be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies can be supported by different base stations 105. The wireless communication system 100 can include, for example, a heterogeneous network in which different types of base stations 105 use the same or different radio access technologies to provide coverage for various geographic coverage areas 110.

[0073] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication and can be supported by one or more mission-critical services such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0074] In some examples, UE 115 can communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication can be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group can be outside the geographic coverage area 110 of the base station 105 or otherwise unable to receive transmissions from the base station 105. In some examples, groups of UEs 115 communicating via D2D communication can utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for the D2D communication. In other cases, the D2D communication is performed between the UEs 115 without involving the base station 105.

[0075] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function unit (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function unit (UPF)) that routes packets to or interconnects to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. User IP packets may be transmitted through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the network operator IP service 150. Operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0076] Some of the network devices (e.g., base station 105) may include subcomponents such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with the UE 115 through one or more other access network transport entities 145 (which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed among various network devices (e.g., radio heads and ANCs) or may be combined into a single network device (e.g., base station 105).

[0077] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently for macro cells to provide service to UEs 115 located indoors. Transmissions using UHF waves can be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using the lower frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0078] The wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) can employ carrier sensing for conflict detection and avoidance. In some examples, operations in the unlicensed band can be based on a carrier aggregation configuration in combination with component carriers operating in a licensed band (e.g., LAA). Operations in the unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0079] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operations or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having a number of rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0080] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to form or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to the signals carried via the antenna elements associated with the device. Adjustments associated with each of the antenna elements can be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0081] The wireless communication system 100 includes a base station 105, a UE 115, a satellite 120, and a core network 130. In some examples, the wireless communication system 100 can be an LTE network, an LTE-A network, an LTE-A Pro network, or an NR network. In some cases, the wireless communication system 100 can support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices.

[0082] Wireless communication system 100 may also include one or more satellites 120. Satellites 120 may communicate with base stations 105 (also referred to as gateways in NTN) and UEs 115 (or other high-altitude or ground-based communication devices). Satellites 120 may include a satellite communication manager 102 configured to facilitate wireless communications between satellites 120 and other wireless devices (e.g., UEs 115, base stations 105, other satellites 120). Satellites 120 may be any suitable type of communication satellite configured to relay communications between different end nodes in a wireless communication system. Satellites 120 may be examples of space satellites, balloons, spacecraft, aircraft, drones, unmanned aerial vehicles, and the like. In some examples, satellites 120 may be in geosynchronous or geostationary orbit, low Earth orbit, or medium Earth orbit. Satellites 120 may be multi-beam satellites configured to provide service to multiple service beam coverage areas within a predefined geographic service area. For example, satellites 120 may support a first cell and a second cell, where a first beam of satellite 120 supports the first cell and a second beam of satellite 120 supports the second cell. Satellite 120 may be at any distance from the Earth's surface.

[0083] In some cases, a cell can be provided or established by a satellite 120 as part of an NTN. In some cases, a satellite 120 can perform the functions of a base station 105, act as a bent pipe satellite, or act as a regenerative satellite, or a combination thereof. In other cases, a satellite 120 can be an example of an intelligent satellite or a satellite with intelligence. For example, an intelligent satellite can be configured to perform more functions than a regenerative satellite (e.g., it can be configured to perform specific algorithms other than those used in a regenerative satellite, be reprogrammed, etc.). A bent pipe transponder or satellite can be configured to receive signals from a ground station and transmit these signals to a different ground station. In some cases, a bent pipe transponder or satellite can amplify a signal or convert from an uplink frequency to a downlink frequency. A regenerative transponder or satellite can be configured to relay signals like a bent pipe transponder or satellite, but other functions can also be performed using onboard processing. Examples of these other functions can include demodulating a received signal, decoding a received signal, recoding a signal to be transmitted, or modulating a signal to be transmitted, or a combination thereof. For example, a bent-pipe satellite (eg, satellite 120) may receive a signal from base station 105 and may relay the signal to UE 115 or base station 105, or vice versa.

[0084] UE 115, base station 105, and / or satellite 120 may support communications to improve SIB acquisition for a wireless network (e.g., an NTN). In some aspects, UE 115 may acquire a first SIB for a first cell of the NTN and determine whether the first SIB associated with the first cell can be used for communication with an additional cell of the NTN. If the first SIB associated with the first cell is valid and usable for communication with a second cell, UE 115 may use the first SIB associated with the first cell for communication with the second cell, thereby avoiding the need to acquire a new SIB associated with the second cell. Using SIBs in this manner may require signaling whether such SIBs are valid for the second cell. In some cases, the UE may acquire an SSB or MIB associated with the second cell, where the SIB and / or MIB indicates that the first SIB associated with the first cell can be used for communication with the second cell. Additionally, UE 115 may determine whether the first SIB associated with the first cell is still valid or usable for communication with the second cell based on whether the first SIB was received during a validity period associated with the SIB.

[0085] Additionally or alternatively, UE 115 may receive a SIB set indicating a set of parameters that are common to a set of cells of the NTN. In this example, upon entering a new cell of the NTN, UE 115 may acquire cell-specific parameters specific to the new cell and may not need to acquire the full set of SIBs. In the event that the new cell utilizes only a set of parameters that are common to a set of cells, UE 115 may receive an indication from the new cell indicating that the new cell utilizes previously acquired parameters, thereby indicating that UE 115 does not need to acquire a new SIB for the new cell. In this regard, the signaling overhead and power consumption of UE 115 associated with SIB acquisition may be significantly reduced.

[0086] The techniques described herein can improve SIB acquisition in wireless communication system 100. In particular, the techniques described herein can reduce the number of times a UE 115 can acquire SIBs for a new cell. These techniques can reduce the resource and signaling overhead associated with SIB acquisition within wireless communication system 100 and can additionally reduce power consumption at UE 115 and satellite 120.

[0087] Figure 2 An example of a wireless communication system 200 that supports SIB acquisition for a wireless network according to aspects of the present disclosure is shown. The wireless communication system 200 may include a UE 115-a and a satellite 120-a (e.g., in some cases, the satellite 120-a may also be referred to as a base station 105), which may be as described with reference to FIG. Figure 1An example of a base station 105, a UE 115, and a satellite 120 is depicted. In the case of an NTN, a satellite 120-a may serve a coverage area 110-a.

[0088] The wireless communication system 200 may support communication between a UE 115-a and a satellite 120-a. For example, the UE 115-a may send an uplink transmission 210 to the satellite 120-a. Conversely, as another example, the satellite 120-a may send a downlink transmission 205 to the UE 115-a. The satellite 120-a may be located in an orbit such as a low Earth orbit, a medium Earth orbit, a geostationary orbit, or another non-geostationary orbit. In any of these examples, the satellite 120-a may be thousands of kilometers from the Earth and, therefore, may be thousands of kilometers from the UE 115-a. Thus, each transmission between the satellite 120-a and the UE 115-a (e.g., downlink transmission 205, uplink transmission 210) may travel the distance from the Earth to the satellite 120-a and back to the Earth.

[0089] In some aspects, the coverage area 110-a of the satellite 120-a may be much larger than the coverage area associated with a ground base station (e.g., base station 105-a). In this regard, the coverage area 110-a may serve multiple ground tracking areas. The coverage area 110-a of the satellite may be subdivided into multiple cells that serve the ground tracking areas of the coverage area 110-a. For the purposes of the present disclosure, the term "ground tracking area" may be used to refer to an area defined by selected ground boundaries. In this regard, a ground tracking area may refer to a defined area on the earth defined by selected geofence boundaries. In some cases, the boundaries of the ground tracking area may be independent of the boundaries of one or more cells of the NTN.

[0090] Satellite 120-a may move or travel relative to a fixed location on Earth (e.g., relative to a ground tracking area). For example, when satellite 120-a is in low Earth orbit, satellite 120-a may be 600 km to 2000 km from Earth and travel at a speed of 7.5 km / s. Therefore, satellite 120-a and the coverage area 110-a served by satellite 120-a may move relative to Earth over time. Therefore, as satellite 120-a moves relative to UE 115-a, UE 115-a may be located within and served by different cells comprising the satellite's coverage area 110-a. For example, while UE 115-a remains in a fixed location within a given ground tracking area, UE 115-a may experience varying cell coverage as satellite 120-a, coverage area 110-a, and the cells of coverage area 110-a move relative to UE 115-a over time. For example, because the satellite 120 - a moves over time, the UE 115 - a may experience changing cell coverage (eg, a handoff between cells) approximately every thirteen seconds.

[0091] In some wireless communication systems, each time a UE 115-a experiences changing cell coverage within the NTN (e.g., a handover between cells), the UE 115-a within the NTN may acquire a new SIB associated with the new cell. For example, in some wireless communication systems, the UE 115-a may acquire a new SIB associated with a new cell serving the UE 115-a approximately every thirteen seconds. These frequent handovers (and therefore frequent SIB acquisitions) may result in significant resource and signaling overhead, as well as increased power consumption at the UE 115-a.

[0092] Therefore, the wireless communication system 200 can be configured to support transmissions between the UE 115-a and the satellite 120-a to address these issues. Specifically, the UE 115-a can acquire a first SIB associated with a first cell of the NTN supported by the satellite 120-a and determine whether the first SIB associated with the first cell is valid and can be used to communicate with a second cell of the NTN. If the first SIB associated with the first cell is usable for communication with the second cell, the UE 115-a can avoid acquiring a new SIB associated with the second cell and can instead use the first SIB associated with the first cell to communicate with the second cell.

[0093] Additionally or alternatively, UE 115-a may obtain one or more SIBs associated with a set of cells of the NTN. The one or more SIBs may include an indication of one or more parameters common to the set of cells for communication with the set of cells (e.g., a "common SIB"). In such an example, UE 115-a may receive a first SIB from a first cell, wherein the first SIB includes an indication of a first set of cell-specific parameters for communication with the first cell (e.g., a "cell-specific SIB"). Additionally or alternatively, the one or more SIBs may include an indication of one or more parameters common to the NTN (e.g., NTN-specific parameters) and / or parameters common to individual satellites of the NTN (e.g., satellite-specific parameters). In some cases, the first SIB may include an indication of a difference from a set of parameters common to the set of cells to be used for communication with the first cell. Additionally or alternatively, the first SIB may include an indication that the first cell uses a set of parameters common to the set of cells for communication with the first cell. By acquiring a set of parameters that are common to a set of cells, and then acquiring cell-specific parameters from each respective cell, the signaling overhead associated with SIB acquisition may be reduced, thereby reducing power consumption of the UE 115 - a and the satellite 120 - a.

[0094] Figure 3 An example of a wireless communication system 300 that supports SIB acquisition for a wireless network according to aspects of the present disclosure is shown. In some examples, the wireless communication system 300 can implement aspects of the wireless communication system 100 and / or the wireless communication system 200. In summary, Figure 3 One or more aspects of the present disclosure are shown that improve SIB acquisition for a wireless network (eg, NTN).

[0095] The wireless communication system 300 may include a satellite 120-b serving a first UE 115-b and a second UE 115-c. In some aspects, the coverage area 110-b of the satellite 120-b may include a set of cells that make up the coverage area 110-b. For example, the satellite 120-b may include a first cell 310-a and a second cell 310-b. For example, a first beam of the satellite 120-b may support the first cell 310-a, and a second beam of the satellite 120-b may support the second cell 310-b. The coverage area 110-b of the satellite 120-b may include any number of cells 310 across any number of ground tracking regions 305, and may be any number of cells 310 across any number of ground tracking regions 305. Figure 3 The first cell 310-a and the second cell 310-b are shown for illustration purposes only. Figure 3As shown, the coverage area 110-b of the satellite 120-b can span the first terrestrial tracking area 305-a and the second terrestrial tracking area 305-b. In some cases, the cell 310 supported by the satellite 120-b can serve the first terrestrial tracking area 305-a, the second terrestrial tracking area 305-b, or both.

[0096] In some aspects, satellite 120-b may move relative to the Earth over time. Therefore, satellite 120-b may also move relative to UEs 115-b and 115-c over time. For example, Figure 3 5-c 。 As shown, satellite 120-b may be at a first location at time 1, at a second location at time 2, and at a third location at time 3. In this example, time 2 is after time 1 and time 3 is after time 2, so that satellite 120-b is shown as moving from right to left on the page over time. In addition, as satellite 120-b moves relative to the Earth, coverage area 110-b served by satellite 120-b may also move relative to the Earth and UEs 115-b and 115-c over time. For example, at time 1, coverage area 110-b may be positioned so that first cell 310-a serves first UE 115-b and second cell serves second UE 115-b. At time 2, coverage area 110-b may have moved relative to the Earth (and UEs 115-b and 115-c) so that second cell 310-b serves both first UE 115-b and second UE 115-c.

[0097] In this regard, in the case of an NTN including a satellite 120-b that moves relative to the Earth, the first UE 115-b, the second UE 115-c, or both may experience varying cell coverage as the satellite 120-b moves relative to the Earth. Figure 3As shown, a first UE 115-b and a second UE 115-c may remain stationary over time within a first terrestrial tracking area 305-a and a second terrestrial tracking area 110-b, respectively. The second UE 115-c may be positioned within a second cell 310-b such that the second cell 310-b serves the second UE 115-b at time 1, time 2, and time 3. In contrast, the first UE 115-b may be positioned within the first cell 310-a at time 2 and may be positioned within the second cell 310-b at time 2 and time 3. In this regard, although the first UE 115-b remains stationary within the first terrestrial tracking area 305-a, the first UE 115-b may experience varying cell coverage over time due to the mobility of the satellite 120-b and the corresponding coverage area 110-b. However, the first UE 115-c, the second UE 115-c, or both may not be stationary in all scenarios. For example, the first UE 115-b may move from a first terrestrial tracking area 305-a to a second terrestrial tracking area 305-b.

[0098] Figure 3 The changing cell coverage experienced by first UE 115-b shown in FIG1 may cause first UE 115-b and satellite 120-b to perform a handover procedure (e.g., a cell reselection procedure) from first cell 310-a to second cell 310-b between time 1 and time 2 because first UE 115-b experiences the changing cell coverage. In some cases, first UE 115-b and second UE 115-c may experience changing cell coverage (e.g., perform a handover procedure or a cell reselection procedure) approximately every thirteen seconds.

[0099] One challenge that may be associated with the changing cell coverage experienced by the first UE 115-b is related to acquiring a new SIB each time the first UE 115-b experiences the changing cell coverage. Specifically, between time 1 and time 2, the first UE 115-b may experience changing cell coverage between the first cell 310-a and the second cell 310-b. In some cases, the first UE 115-b may perform a handover procedure (e.g., a cell reselection procedure) between the first cell 310-a and the second cell 310-b between time 1 and time 2. The UE 115-b may communicate with the first cell 310-a at time 1 based on a first SIB (e.g., a first set of parameters indicated by the first SIB). In some cases, at time 2, the UE 115-b may acquire a second SIB associated with the second cell 310-b in order to communicate with the second cell 310-b using the second SIB (e.g., a second set of parameters indicated by the second SIB). However, it may not be desirable for first UE 115-b to acquire new SIBs each time first UE 115-b experiences changes in cell coverage. In particular, in the context of NTN, UEs 115-b and 115-c may experience frequently changing cell coverage due to the mobility of satellite 120-b. This may result in frequent SIB acquisitions, leading to resource and signaling overhead and increased power consumption at UEs 115-b and 115-c.

[0100] Thus, in some aspects of the present disclosure, the wireless communication system 300 may support communication between a satellite 120-b and UEs 115-b and 115-c that can improve SIB acquisition and potentially reduce the number of times the UEs 115-b and 115-c must acquire SIBs for a new cell. For example, in some aspects, the UE 115-b may receive, from the satellite 120-b, one or more SIBs associated with one or more cells of the NTN supported by the satellite 120-b. For example, at or before time 1, the UE 115-b may receive one or more SIBs associated with a first cell 310-a supported by the satellite 120-c, wherein the one or more SIBs associated with the first cell 310-a include a set of parameters for communicating with the first cell 310-a.

[0101] As another example, in some cases, UE 115-b may receive one or more SIB sets associated with a set of cells 310 of an NTN. The one or more SIB sets may include an indication of one or more parameter sets for communicating with the set of cells 310. In some aspects, the one or more SIB sets may be received via a radio resource control (RRC) message, a NAS message, or any combination thereof. For example, satellite 120-b may transmit an RRC message, a NAS message, or both, wherein the RRC message and / or NAS message includes one or more SIB sets associated with the set of cells 310. In some cases, the set of cells 310 may include each cell 310 supported by satellite 120-b, each cell 310 of the NTN, or both. In this regard, each cell 310 of the NTN associated with satellite 120-b may use the parameter sets indicated in the SIB sets. Additionally or alternatively, the set of cells 310 may include a subset of the cells 310 supported by satellite 120-b, a subset of the cells 310 of the NTN, or both. In this regard, a subset of the cells 310 of the NTN associated with the satellite 120 - b may use the set of parameters indicated in the SIB set.

[0102] In some cases, satellite 120-b may transmit one or more SIB sets based on the predicted path of UE 115-b relative to the NTN. For example, satellite 120-b may move relative to the Earth, causing the geographic coverage area (and therefore the cells 310 comprising the geographic coverage area) to move relative to the Earth. In this regard, as Figure 3 As shown, UE 115-b may experience varying cell coverage based on a predicted path of UE 115-b relative to the NTN (or a predicted path of the NTN relative to UE 115-b). Accordingly, satellite 120-b may be configured to determine a predicted path of UE 115-b relative to the NTN (or a predicted path of the NTN relative to UE 115-b). Determining the predicted path of UE 115-b and / or the NTN relative to each other may include determining one or more cells 310 of the NTN along the predicted path (e.g., one or more cells 310 expected to serve UE 115-b over time). For example, the predicted path of UE 115-b relative to the NTN may include at least a first cell 310-a and a second cell 310-b. Satellite 120-b may determine the predicted path based on characteristics of UE 115-b (e.g., the position, velocity, heading, or trajectory of UE 115-b), characteristics of satellite 120-b (e.g., the position, velocity, heading, or trajectory of satellite 120-b), or any combination thereof.

[0103] In some aspects, UE 115-b may receive an indication of a validity period associated with a parameter set for a first cell 310-a. The indication of the validity period may be indicated in an SIB, an SSB, an MIB, or any combination thereof. In this regard, UE 115-b may receive an indication of a validity period associated with a first SIB associated with the first cell 310-a. The indication of the validity period may be pre-configured by UE 115-b, indicated via signaling from satellite 120-b, or any combination thereof. In some cases, the indication of the validity period associated with the parameter set for the first cell 310-a and / or the validity period associated with the first SIB for the first cell 310-a may be indicated in an SIB received by UE 115-b.

[0104] In some cases, the validity period associated with the parameter set of the first cell 310-a may include a time interval or duration during which the parameter set is valid for communications with the first cell 310-a. The validity period may be used to indicate whether the SIB stored by the UE 115-b is usable for another cell supported by the NTN. Additionally or alternatively, the indication of the validity period may include an indication that the parameter set of the first cell 310-a will not be changed or updated during the validity period. For example, the UE 115-b may receive a first SIB associated with the first cell 310-a. The first SIB may include an indication of the parameter set used for communications with the first cell 310-a and an indication that the parameter set will be valid and / or remain unchanged for one hour from the time the first SIB is transmitted (e.g., a validity period of one hour).

[0105] like Figure 3As shown, UE 115-b may communicate with satellite 120-b via a first cell 310-a of the NTN at time 1. In some aspects, UE 115-b may communicate with the first cell 310-a based on one or more SIBs received from satellite 120-b. In this regard, UE 115-b may communicate with the first cell 310-a based on a parameter set associated with the first cell 310-a. If UE 115-b receives a set of SIBs associated with a set of cells 310, wherein the SIB set includes an indication of one or more parameter sets for communicating with the set of cells 310, UE 115-b may determine that the first cell 310-a belongs to the set of cells 310 based on a set of physical cell identifiers (PIDs) associated with the parameter set, a PID associated with the first cell 310-a, or any combination thereof. In some aspects, the PID set and / or the PID associated with the first cell 310-a may be indicated in the SIB set. Thus, UE 115-b may be able to determine, based on the PID set indicated in the SIB set, that the parameter set indicated in the SIB set may be used for the first cell 310-a.

[0106] In some aspects, UE 115-b may receive a downlink message from satellite 120-c from first cell 310-a, wherein the downlink message includes an indication of a neighbor cell list associated with UE 115-b, first cell 310-a, or both. For example, UE 115-b may receive and store a neighbor cell list associated with UE 115-b, wherein the neighbor cell list includes one or more neighbor cells associated with first cell 310-a. Additionally or alternatively, the downlink message may include an indication of one or more parameters associated with at least one cell 310 in the neighbor cell list. For example, the downlink message may include one or more SIBs associated with at least one cell 310 in the neighbor cell list. In some implementations, UE 115 may receive an indication of a periodicity and / or a next update time for a SIB used to receive / obtain updates for a cell 310 in the neighbor cell list. In some cases, a first SIB for first cell 305-a may indicate a periodicity and / or a next update time for a SIB used to receive / obtain updates for a cell in the neighbor cell list. In some cases, when UE 115-b experiences changing cell coverage, UE 115-b may determine whether to update a neighbor cell list associated with (and stored by) UE 115-b.Aspects of neighbor cell lists are discussed in further detail herein.

[0107] UE 115-b may additionally or alternatively identify that an update (e.g., a system information (SI) update) to a parameter set associated with first cell 310-a is available. In some cases, UE 115-b may determine that an update to a parameter set associated with first cell 310-a is available based on signaling received from satellite 120-b. For example, satellite 120-b may transmit a downlink message (e.g., a control message) to UE 115-b including an indication that an update is available. In additional or alternative aspects, UE 115-b may determine that an update is available based on determining expiration of a validity period associated with a parameter set associated with first cell 310-a.

[0108] In some aspects, the UE 115-b may determine whether to perform an update to a parameter set associated with the first cell 310-a (e.g., an SI update), or whether to initiate a random access procedure with the first cell 310-a. The UE 115-b may determine whether to perform an update to a parameter set associated with the first cell 310-a or whether to initiate a random access procedure with the first cell 310-a based on an expected duration until a cell reselection procedure (e.g., an expected duration until a cell reselection procedure with the second cell 310-b), an expected duration that the UE 115-b is expected to remain within the first cell 310-a, a location of the UE 115-b within the NTN (e.g., positioning), whether a random access procedure has been initiated or completed, or any combination thereof.

[0109] For example, in some aspects, UE 115b may identify that an update to a parameter set associated with a first cell 310-a is available. UE 115-b may determine that an expected duration until a cell reselection procedure with a second cell 310-b is initiated satisfies a threshold. For example, UE 115-b may determine that an expected duration until a cell reselection procedure with the second cell 310-b is initiated is less than a threshold duration. In this example, UE 115-b may refrain from updating the parameter set based on determining that the expected duration satisfies the threshold, and may perform a cell reselection procedure with the second cell 310-b based on determining that the expected duration satisfies the threshold.

[0110] In some aspects, UE 115-b may receive a control message associated with a second cell 310-b of an NTN supported by satellite 120-b. For example, when UE 115-b experiences changing cell coverage between time 1 and time 2, UE 115-b may receive a control message from the second cell 310-b. The control message may include, but is not limited to, an SSB message, a MIB message, or any combination thereof. For example, at time 2, UE 115-b may receive a control message from the second cell 310-b. The control message may include an indication that a parameter set associated with the first cell 310-a is available for communication with the second cell 310-b. In this regard, the control message may include an indication that a first SIB associated with the first cell 310-a is available for communication with the second cell 310-b. Thus, UE 115-b can determine based on the control message that a set of parameters stored by UE 115-d for communication with the first cell 310-a (e.g., a first SIB associated with the first cell 310-a) can be used for communication with the second cell 310-b.

[0111] The indication that the first parameter set associated with the first cell 310-a is usable for communication with the second cell 310-b may include an indication that the second cell 310-b utilizes a default parameter set. In some cases, the indication that the first SIB associated with the first cell 310-a is usable for communication with the second cell 310-b may be indicated in a bit field of an SSB message, a MIB message, or both.

[0112] In some cases, the indication that the parameter set associated with the first cell 310-a is available for communication with the second cell may include a validity period associated with the parameter set. In this regard, the UE 115-b may determine that the parameter set associated with the first cell 310-a is available for communication with the second cell 310-b based on the validity period associated with the parameter set. For example, the UE 115-b may receive a control message (e.g., SSB, MIB) from the second cell 310-b, the control message including an indication of the validity period associated with the parameter set. In this example, the UE 115-b may determine that the parameter set associated with the first cell 310-a is available for communication with the second cell 310-b based on determining that the parameter set remains unchanged during the validity period. In some cases, the UE 115-b may determine that the parameter set associated with the first cell 310-a remains unchanged during the validity period based on an indication in the configuration message. Conversely, for another example, the UE 115-b may determine that the parameter set associated with the first cell 310-a is not available for communication with the second cell 310-b based on determining that the parameter set was received outside of the validity period.

[0113] In some cases, the NTN may exhibit overlapping cell coverage. For example, at time 2, UE 115-b may be located within the geographic coverage areas of second cell 310-b and third cell (not shown). In this regard, UE 115-b may experience overlapping cell coverage and may be able to choose whether to communicate with second cell 310-b, third cell, or both. In such an example, UE 115-b may additionally receive control messages associated with the third cell of the NTN supported by satellite 120-b.

[0114] Continuing with the same example, the UE 115-b may determine (e.g., select) whether to communicate with the second cell 310-b or the third cell. The UE 115-b may be configured to determine (e.g., select) whether to communicate with the second cell 310-b or the third cell based on any characteristics or parameters associated with the second cell 310-b and / or the third cell, including a signal-to-noise ratio (SNR) value, a signal-to-interference-plus-noise ratio (SINR) value, a reference signal received power (RSRP) value, a reference signal received quality (RSRQ) value, or any combination thereof. Additionally or alternatively, the UE 115-b may determine to communicate with the second cell 310-b or the third cell (e.g., perform an attachment procedure or a cell reselection procedure with the second cell 310-b or the third cell) based on whether a parameter set associated with the first cell 310-a may be used to communicate with the second cell 310-b, the third cell, or both. For example, UE 115-b may determine that a parameter set associated with the first cell 310-a (e.g., SIBs associated with the first cell 310-a) may be used for communication with the second cell 310-b but not for communication with the third cell. In this example, UE 115-b may select to communicate with the second cell 310-b based on determining that the parameter set associated with the first cell 310-a (e.g., SIBs associated with the first cell 310-a) may be used by the second cell 310-b and not by the third cell (e.g., associated with the second cell 310-b but not the third cell). Conversely, for another example, UE 115-b may determine that a parameter set associated with the first cell 310-a may be used for communication with the third cell but not for communication with the second cell 310-b, and therefore may select to communicate with the third cell. In some cases, neither the second cell 310-b nor the third cell may be associated with the parameter set associated with the first cell 310-a, or both.

[0115] In some cases, UE 115-b may determine that a parameter set associated with the first cell 310-a is usable by the second cell 310-b but not by the third cell. However, in some cases, UE 115-b may additionally identify that an update to the parameter set associated with the first cell 310-a (and therefore the parameter set associated with the second cell 310-b) is available. In this example, UE 115-b may select the third cell to avoid performing an update associated with the parameter set. For example, upon identifying that an update to the parameter set associated with the first cell 310-a (and therefore the parameter set associated with the second cell 310-b) is available, UE 115-b may avoid performing an attach procedure with the second cell 310-b based on identifying that an update to the parameter set for the first cell 310-a (and the second cell 310-b) is available. In this example, UE 115 - b may perform a cell reselection procedure with a third cell based on identifying that updates to the parameter set for the first cell 310 - a (and the second cell 310 - b ) are available.

[0116] In some cases, UE 115-b chooses to communicate with the second cell 310-b (rather than the third cell), such as Figure 3 When selecting to communicate with the second cell 310-b, the UE 115-b may determine whether a parameter set associated with the first cell 310-a (e.g., a SIB associated with the first cell 310-a) is available for use with the second cell 310-b. In some cases, this determination may be performed in addition to or in lieu of evaluating whether to select the second cell 310-b or the third cell, as previously discussed herein.

[0117] In some cases, the UE 115-b may determine whether a parameter set associated with the first cell 310-a may be used for communication with the second cell 310-b based on signaling received from the first cell 310-a, the second cell 310-b, or both. For example, as previously mentioned herein, the UE 115-b may receive a control message (e.g., SSB, MIB) from the second cell 310-b, wherein the control message includes an indication that the second cell 310-b utilizes the parameter set associated with the first cell 310-a, the default parameter set, or both. As another example, the control message received from the second cell 310-b may include an indication of a valid period associated with the parameter set. In this example, the UE 115-b may determine that the parameter set associated with the first cell 310-a may be used for communication with the second cell 310-b based on determining that the parameter set remains unchanged during the valid period. Conversely, as another example, the UE 115-b may determine that the parameter set associated with the first cell 310-a is not usable for communicating with the second cell 310-b based on determining that the parameter set was received outside of a valid period.

[0118] In the event that the UE 115-b determines that the parameter set associated with the first cell 310-a can be used to communicate with the second cell 310-b, the UE 115-b may use the parameter set associated with the first cell 310-a to communicate with the second cell 310-b. The UE 115-b may communicate with the second cell 310-b based on performing a reselection procedure with the second cell 310-b, determining that the first parameter set associated with the first cell 310-a can be used to communicate with the second cell 310-b, or any combination thereof.

[0119] Conversely, in the event that the UE 115-b determines that the parameter set associated with the first cell 310-a is not usable for communicating with the second cell 310-b, the UE 115-b may receive (e.g., obtain) one or more SIBs associated with the second cell 310-b. The one or more SIBs associated with the second cell 310-b may include a parameter set for communicating with the second cell 310-b. In some aspects, the UE 115b may receive the one or more SIBs associated with the second cell 310-b based on determining that the parameter set associated with the first cell 310-a is not usable for communicating with the second cell 310-b. Subsequently, the UE 115b may communicate with the second cell 310-b based on the one or more SIBs associated with the second cell 310-b (e.g., based on the parameter set associated with the second cell 310-b).

[0120] In some aspects, UE 115-b may determine whether to update a neighbor cell list associated with UE 115-b, first cell 310-a, or both. In some cases, UE 115-b may determine whether to update the neighbor cell list based on communicating with second cell 310-b, performing a reselection procedure with second cell 310-b, or any combination thereof. In some cases, UE 115-b may determine whether to update the neighbor cell list based on whether UE 115-b selected second cell 310-b as part of an inter-frequency cell reselection procedure or an intra-frequency cell reselection procedure.

[0121] For example, UE 115-b may receive a downlink message that includes an indication of a neighbor cell list associated with UE 115-b, first cell 310-a, second cell 310-b, or any combination thereof, and one or more parameters (e.g., one or more SIBs) associated with at least one cell in the neighbor cell list. In some cases, UE 115-b may select second cell 310-b as part of an intra-frequency cell reselection procedure or an inter-frequency cell reselection procedure, and may avoid updating the neighbor cell list based on selecting second cell 310-b as part of the intra-frequency cell reselection procedure or the inter-frequency cell reselection procedure.

[0122] As another example, the UE 115-b may select the second cell 310-b as part of an intra-frequency cell reselection process and may update a neighbor cell list associated with the UE 115-b, the first cell 310-a, the second cell 310-b, or any combination thereof based on selecting the second cell 310-b as part of the intra-frequency cell reselection process. Conversely, in some cases, the UE 115-b may select the second cell 310-b as part of an inter-frequency cell reselection process and may update a neighbor cell list associated with the UE 115-b, the first cell 310-a, the second cell 310-b, or any combination thereof based on selecting the second cell 310-b as part of the inter-frequency cell reselection process.

[0123] In some cases, UE 115-b may avoid updating the neighbor cell list and may obtain a new neighbor cell list after being powered off, entering a low power mode, being out of service, or any combination thereof. For example, in some cases, after being powered off or out of service, UE 115-b may perform a cell selection procedure (as opposed to a cell reselection procedure) and may obtain a neighbor cell list associated with the cell with which UE 115-b performed the cell selection procedure.

[0124] In additional or alternative aspects, Figure 3The satellite 120-b and UE 115-b shown in FIG can address issues associated with SIB acquisition by supporting communications that enable UE 115-b to acquire a set of SIBs that can be used to communicate with a set of cells 310 of the NTN, and then to acquire only cell-specific parameters associated with the new cell upon entering the new cell. By using SIBs in this manner, UE 115-b does not need to acquire a complete set of SIBs each time it enters a new cell and can instead rely on previously acquired SIBs.

[0125] For example, at or before time 1, UE 115-b may receive a set of SIBs (e.g., a common SIB) that is common to a set of cells of the NTN supported by satellite 120-b. In some aspects, the SIB set may include an indication of one or more parameters common to the set of cells for communication with the set of cells. In some cases, the set of cells may include each cell supported by satellite 120-b, each cell of the NTN, or both. Additionally or alternatively, the set of cells may include a subset of cells supported by satellite 120-b, a subset of cells of the NTN, or both. In some cases, the set of cells may include a first cell 310-a and a second cell 310-b. UE 115-b may identify which cells 305 are associated with the common SIB based on geographic coverage area, tracking area (e.g., TAC), etc. The SIB set may include an indication of a set of PIDs associated with the set of cells. For example, in a case where the cell set includes a first cell 310 - a and a second cell 310 - b , the SIB set may include a first PID associated with the first cell 310 - a and a second PID associated with the second cell 310 - b .

[0126] In some cases, UE 115-b may receive a configuration message that includes an indication of a set of downlink resources for receiving SIBs that include cell-specific information associated with a set of cells. In this regard, the configuration message may include an indication of a set of downlink resources that UE 115-b is to monitor to receive SIBs that include cell-specific information from cells of the NTN. Thus, UE 115-b may monitor the set of downlink resources based on receiving the configuration message.

[0127] In some aspects, a UE 115-b may receive one or more SIBs associated with a first cell 310-a, wherein the one or more SIBs include cell-specific information indicating a first set of cell-specific parameters for communicating with the first cell 310-a. For example, the UE 115-b may receive a first SIB associated with the first cell 310-a, wherein the first SIB includes cell-specific information indicating a first set of cell-specific parameters for communicating with the first cell 310-a. In some cases, the UE 115-b may receive the first SIB associated with the first cell 310-a based on receiving a configuration message including an indication of downlink resources for receiving the SIB including the cell-specific information. In some aspects, the first SIB associated with the first cell 310-a may include a first PID associated with the first cell. In this regard, UE 115-b can determine whether the first cell 310-a is included in the cell set associated with the parameter set that is common to the cell set based on the PID set associated with the cell set, the first PID associated with the first cell 310-a, or any combination thereof.

[0128] In other cases, the UE 115 may receive a set of NTN-specific parameters (e.g., parameters for communicating with the NTN) and / or a set of satellite-specific parameters (e.g., parameters for communicating with a specific satellite 120) based on a configured period or based on receiving an indication to acquire the corresponding parameters. Conversely, in some cases, the UE 115-b may refrain from acquiring / receiving NTN-specific parameters and / or satellite-specific parameters based on receiving an indication of a change in cell-specific parameters and / or common parameters associated with the first cell 305-a and / or other cells 305 of the wireless communication system 200.

[0129] In some aspects, the UE 115-b may receive, from the first cell 310-a, an indication of a neighbor cell list associated with the first cell 310-a. For example, a first SIB including a first cell-specific parameter set associated with the first cell 310-a may include an indication of the neighbor cell list associated with the first cell 310-a. Additionally or alternatively, the first SIB including the first cell-specific parameter set associated with the first cell 310-a may include an indication of one or more parameters associated with at least one cell of the neighbor cell list. For example, the first SIB including the first cell-specific parameter set associated with the first cell 310-a may include one or more SIBs associated with at least one cell of the neighbor cell list.

[0130] UE 115-b may identify differences, if any, between a set of parameters that are common to the set of cells and a first set of cell-specific parameters associated with the first cell 310-a, as indicated in the cell-specific information associated with the first cell 310-a. For example, UE 115-b may identify cell-specific parameters in the first cell-specific parameter set associated with the first cell 310-a that are different from parameters in the set of parameters that are common to the set of cells. As another example, UE 115-b may identify differences between parameters in the set of parameters that are common to the set of cells and cell-specific parameters in the first cell-specific parameter set associated with the first cell 310-a.

[0131] In some aspects, the UE 115-b may communicate with the first cell 310-a supported by the satellite 120-b based on one or more parameters common to the set of cells, a first set of cell-specific parameters associated with the first cell 310-a, or any combination thereof. For example, the UE 115-b may communicate with the first cell 310-a based on at least a first subset of the one or more parameters common to the set of cells and a first set of cell-specific parameters associated with the first cell 310-a. Additionally, the UE 115-b may communicate with the first cell 310-a based on identifying a difference between the set of parameters common to the set of cells and the first set of cell-specific parameters associated with the first cell 310-a. In some cases, the first cell 310-a may not utilize any cell-specific parameters. In such cases, the UE 115-b may communicate with the first cell 310-a using only the set of parameters common to the set of cells.

[0132] In some aspects, UE 115-b may identify that an update (e.g., an SI update) to a first cell-specific parameter set associated with a first cell 310-a is available. In some cases, UE 115-b may determine that an update to the parameter set associated with the first cell 310-a is available based on signaling received from satellite 120-b. For example, satellite 120-b may send a downlink message (e.g., a control message) to UE 115-b that includes an indication that an update is available. The downlink message may include an indication of an update or change to at least one cell-specific parameter in the first cell-specific parameter set associated with the first cell 310-a. In additional or alternative aspects, UE 115-b may determine that an update is available based on determining an expiration of a validity period associated with the parameter set associated with the first cell 310-a.

[0133] In some aspects, the UE 115-b may determine whether to perform an update of at least one cell-specific parameter in a first cell-specific parameter set associated with the first cell 310-a (e.g., an SI update), or whether to initiate a random access procedure with the first cell 310-a. The UE 115-b may determine whether to perform an update of the first cell-specific parameter set associated with the first cell 310-a or whether to initiate a random access procedure with the first cell 310-a based on an expected duration until a cell reselection procedure (e.g., an expected duration until a cell reselection procedure with the second cell 310-b), an expected duration that the UE 115-b is expected to remain within the first cell 310-a, a location of the UE 115-b within the NTN (e.g., positioning), whether the random access procedure has been initiated or completed, or any combination thereof.

[0134] For example, in some cases, UE 115-b may update a first SIB associated with first cell 310-a based on receiving a downlink message, where the downlink message includes an indication of a change to at least one cell-specific parameter in a first cell-specific parameter set associated with first cell 310-a. UE 115-b may then communicate with first cell 310-a based on updating the first SIB associated with first cell 310-a.

[0135] As another example, in some aspects, UE 115-b may identify that an update to a first cell-specific parameter set associated with a first cell 310-a is available. UE 115-b may determine that an expected duration until a cell reselection procedure with a second cell 310-b is initiated satisfies a threshold. For example, UE 115-b may determine that the expected duration until a cell reselection procedure with the second cell 310-b is initiated is less than a threshold duration. In this example, UE 115-b may refrain from updating the first cell-specific parameter set associated with the first cell 310-a based on determining that the expected duration satisfies the threshold, and may perform a cell reselection procedure with the second cell 310-b based on determining that the expected duration satisfies the threshold.

[0136] Subsequently, UE 115-b may experience changing cell coverage between time 1 and time 2. In this regard, UE 115-b may receive one or more SIBs associated with a second cell 310-b of the NTN supported by satellite 120-b. The one or more SIBs associated with the second cell 310-b may include cell-specific information indicating a set of cell-specific parameters for communicating with the second cell 310-b. For example, at time 2, UE 115-b may receive a second SIB associated with the second cell 310-b, wherein the second SIB includes cell-specific information associated with the second cell 310-b, the cell-specific information indicating a second set of cell-specific parameters for communicating with the second cell 310-b. In some aspects, UE 115-b may receive the second SIB from the second cell 310-b based on receiving a configuration message including an indication of a set of downlink resources for receiving the SIB including the cell-specific information. In some cases, the UE 115-b may identify a difference, if any, between the set of parameters that are common to the set of cells and the second set of cell-specific parameters associated with the second cell 310-b. In some aspects, the second SIB associated with the second cell 310-b may include a second PID associated with the second cell 310-b. In this regard, the UE 115-b may determine whether the second cell 310-b is included in the set of cells associated with the set of parameters that are common to the set of cells based on the set of PIDs associated with the set of cells, the second PID associated with the second cell 310-b, or any combination thereof.

[0137] In some aspects, the second SIB including the second cell-specific parameter set associated with the second cell 310-b may include an indication of a neighbor cell list associated with the second cell 310-b. Additionally or alternatively, the second SIB including the second cell-specific parameter set associated with the second cell 310-b may include an indication of one or more parameters (e.g., one or more SIBs) associated with at least one cell of the neighbor cell list. Thus, the UE 115-b may update the neighbor cell list stored by the UE 115-b based on the indication of the neighbor cell list associated with the second cell 310-b.

[0138] UE 115-b may communicate with the second cell 310-b based on one or more parameters that are common to the set of cells, a second set of cell-specific parameters associated with the second cell 310-b, or any combination thereof. For example, UE 115-b may communicate with the second cell 310-b based on at least a second subset of parameters from the one or more parameters that are common to the set of cells and a second set of cell-specific parameters associated with the second cell 310-b. Additionally, UE 115-b may communicate with the second cell 310-b based on identifying a difference between the parameters that are common to the set of cells and the second set of cell-specific parameters associated with the second cell 310-b. In some cases, the second cell 310-b may not utilize any cell-specific parameters. In such a case, UE 115-b may communicate with the second cell 310-b using only the set of parameters that are common to the set of cells.

[0139] The techniques described herein can improve SIB acquisition in wireless communication systems 100, 200, and 300. In particular, the techniques described herein can reduce the number of times a UE 115 acquires SIBs for a new cell. For example, if a UE 115-b determines that a first SIB associated with a first cell 310-a is valid and can be used for communication with a second cell 310-b, the UE 115-b can use the first SIB associated with the first cell 310-a for communication with the second cell 310-b, thereby avoiding acquiring a new SIB associated with the second cell 310-b. As another example, the UE 115-b can receive a SIB set that indicates a set of parameters that are common to a set of cells of an NTN. In this example, upon entering a first cell 310-a or a second cell 310-b of the NTN, the UE 115-b can acquire cell-specific parameters specific to the corresponding cell (e.g., cell-specific parameters associated with the first cell 310-a, cell-specific parameters associated with the second cell 310-b), without having to acquire a complete set of SIBs. These techniques can reduce resource and signaling overhead associated with SIB acquisition within the wireless communication system 300 and can additionally reduce power consumption at the satellite 120-b and the UE 115-b.

[0140] Figure 4 An example of a process flow 400 for supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. In some examples, the process flow 400 can implement aspects of the wireless communication system 100, 200, 300, or any combination thereof. For example, the process flow 400 can be shown as shown in FIG. Figure 1-3 Improved SIB acquisition techniques and other aspects are described.

[0141] Process flow 400 may include satellite 120-c and UE 115-d, which may be as described with reference to FIG. Figure 1-3 4. The following description of process flow 400 illustrates an example of a gNB (or base station 105) and a UE 115. In the following description of process flow 400, operations between satellite 120-c and UE 115-d may be performed in a different order than the example order shown, or the operations performed by satellite 120-c and UE 115-d may be performed in a different order or at a different time. Some operations may also be omitted from process flow 400, and other operations may be added to process flow 400. In some examples, the operations shown in process flow 400 may be performed by hardware (e.g., including circuits, processing blocks, logical components, and other components), code executed by a processor (e.g., software or firmware), or any combination thereof.

[0142] exist Figure 4 In the example of FIG. 4 , satellite 120 - c and UE 115 - d may communicate with each other via an NTN. In particular, satellite 120 - c and UE 115 - d may communicate with each other via one or more cells of the NTN supported by satellite 120 - c. Process flow 400 may support improved SIB acquisition within wireless communication systems 100 , 200 , 300 , or any combination thereof (e.g., improved SIB acquisition within an NTN).

[0143] At 405, UE 115-d may receive (e.g., obtain) one or more SIBs associated with one or more cells of the NTN supported by satellite 120-c. The one or more SIBs may include an indication of a set of parameters for communicating with at least one cell of the NTN. For example, in some cases, UE 115-d may receive a first SIB associated with a first cell supported by satellite 120-c, wherein the first SIB associated with the first cell includes a set of parameters for communicating with the first cell.

[0144] As another example, in some cases, UE 115-d may receive one or more SIB sets associated with a set of cells of an NTN. The one or more SIB sets may include an indication of one or more parameter sets used to communicate with the set of cells. In some aspects, the one or more SIB sets may be received via an RRC message, a NAS message, or any combination thereof. For example, satellite 120-c may transmit an RRC message, a NAS message, or both, wherein the RRC message and / or the NAS message include the one or more SIB sets associated with the set of cells.

[0145] In some cases, satellite 120-c may transmit one or more SIB sets based on a predicted path of UE 115-d relative to the NTN. For example, satellite 120-c may move relative to the Earth, causing the geographic coverage area (and therefore the cells comprising the geographic coverage area) to move relative to the Earth. In this regard, UE 115-d may experience varying cell coverage based on the predicted path of UE 115-d relative to the NTN (or the predicted path of the NTN relative to UE 115-d). Thus, satellite 120-c may be configured to determine the predicted path of UE 115-d relative to the NTN (or the predicted path of the NTN relative to UE 115-d). Determining the predicted path of UE 115-d and / or the NTN relative to each other may include determining one or more cells of the NTN along the predicted path (e.g., one or more cells expected to serve UE 115-d over time). Satellite 120-c may determine the predicted path based on the position, velocity, or heading / track of UE 115-d, the position, velocity, or heading / track of satellite 120-c, or any combination thereof. In such an example, satellite 120 - c may transmit one or more SIB sets at 405 based on the determined expected path of UE 115 - d relative to the NTN (or the determined predicted path of NTN relative to UE 115 - d ).

[0146] In some aspects, UE 115-d may receive an indication of a validity period associated with a parameter set for a first cell. The indication of the validity period may be indicated in one or more SIBs, SSBs, MIBs, or any combination thereof received at 405. In this regard, UE 115-d may receive an indication of a validity period associated with a first SIB associated with the first cell. In some cases, the validity period associated with the parameter set for the first cell may include a time interval or duration during which the parameter set is valid for communications with the first cell. Additionally or alternatively, the indication of the validity period may include an indication that the parameter set for the first cell will not be changed or updated during the validity period. For example, UE 115-d may receive a first SIB associated with the first cell. The first SIB may include an indication of a parameter set for communicating with the first cell and an indication that the parameter set will be valid and / or remain unchanged for one hour from the time the first SIB is transmitted (e.g., a validity period of one hour).

[0147] At 410, UE 115-d may communicate with a first cell (e.g., a first cell of NTN) supported by satellite 120-c. In some aspects, UE 115-d may communicate with the first cell based on one or more SIBs (e.g., one or more SIB sets) received at 405. In this regard, UE 115-d may communicate with the first cell using a set of parameters associated with communication with the first cell, as indicated in the one or more SIBs received at 405.

[0148] At 415, UE 115-d may receive a downlink message from satellite 120-c, wherein the downlink message includes an indication of a neighbor cell list associated with the first cell. Additionally or alternatively, the downlink message may include an indication of one or more parameters associated with at least one cell in the neighbor cell list. For example, the downlink message may include one or more SIBs associated with at least one cell in the neighbor cell list. In some aspects, communicating with the first cell at 410 may be based on receiving the downlink message at 410 including the neighbor cell list.

[0149] At 420, UE 115-d may identify that an update to a set of parameters associated with the first cell (e.g., an SI update) is available. In some cases, UE 115-d may determine that an update to a set of parameters associated with the first cell is available based on signaling received from satellite 120-c. For example, satellite 120-c may send a control message to UE 115-d that includes an indication that an update is available. In additional or alternative aspects, UE 115-d may determine that an update is available based on determining expiration of a validity period associated with a first SIB associated with the first cell.

[0150] In some aspects, the UE 115-d may determine whether to perform an update to a set of parameters associated with the first cell (e.g., an SI update) or to initiate a random access procedure with the first cell. The UE 115-d may determine whether to perform an update to a set of parameters associated with the first cell or to initiate a random access procedure with the first cell based on an expected duration until a cell reselection procedure (e.g., an expected duration until a cell reselection procedure with a second cell), an expected duration that the UE 115-d is expected to remain within the first cell, a location of the UE 115-d within the NTN (e.g., positioning), whether a random access procedure has been initiated or completed, or any combination thereof.

[0151] For example, in some aspects, UE 115b may identify that an update to a parameter set associated with a first cell is available. UE 115-d may determine that an expected duration until a cell reselection procedure with a second cell is initiated satisfies a threshold. For example, UE 115-d may determine that the expected duration until a cell reselection procedure with the second cell is initiated is less than a threshold duration. In this example, UE 115-d may refrain from updating the parameter set based on determining that the expected duration satisfies the threshold.

[0152] At 425, UE 115-d may receive a control message associated with a second cell of the NTN supported by satellite 120-c. UE 115-b may receive the control message from the second cell based on the changed cell coverage experienced by UE 115-d. The control message may include, but is not limited to, an SSB message, a MIB message, or any combination thereof. The control message may be received from the second cell and may include an indication that a parameter set associated with the first cell is available for communication with the second cell. In this regard, the control message associated with the second cell may include an indication that a first SIB message associated with the first cell is available for communication with the second cell. The indication that the parameter set associated with the first cell is available for communication with the second cell may include a validity period associated with the parameter set, an indication that the second cell uses the parameter set associated with the first cell, an indication that the second cell uses a default parameter set, or any combination thereof. In some cases, the indication may be indicated in a bit field of the control message (e.g., SSB message, MIB message).

[0153] At 430, UE 115-d may receive a control message associated with a third cell of the NTN supported by satellite 120-c. The control message may include, but is not limited to, an SSB message, a MIB message, or any combination thereof. In some aspects, based on UE 115-d being within the geographic coverage area of ​​the second cell and the third cell, UE 115-d may receive the control message from the second cell at 425 and may receive the control message from the third cell at 430. For example, due to mobility of the NTN, UE 115-d may experience varying cell coverage, where the NTN moves such that UE 115-d changes from being within the first cell to being within both the second cell and the third cell. In this example, the second cell and the third cell may simultaneously support UE 115-d.

[0154] At 435, the UE 115-d may determine (e.g., select) whether to communicate with the second cell or the third cell. The UE 115-d may be configured to determine (e.g., select) whether to communicate with the second cell or the third cell based on any characteristics or parameters associated with the second cell and / or the third cell, including an SNR value, a SINR value, an RSRP value, an RSRQ value, or any combination thereof.

[0155] Additionally or alternatively, UE 115-d may determine to communicate with the second cell or the third cell (e.g., perform an attach procedure or a cell reselection procedure with the second cell or the third cell) based on whether a parameter set associated with the first cell may be used to communicate with the second cell, the third cell, or both. For example, UE 115-d may determine that a parameter set associated with the first cell (e.g., a first SIB associated with the first cell) may be used to communicate with the second cell but not with the third cell. In this example, UE 115-d may select to communicate with the second cell based on determining that a parameter set associated with the first cell (e.g., a first SIB associated with the first cell) may be used by the second cell and not by the third cell (e.g., associated with the second cell but not the third cell).

[0156] As another example, UE 115-d may determine that a parameter set associated with a first cell (e.g., a first SIB associated with the first cell) may be used for communication with a third cell but not for communication with the second cell, and may therefore select to communicate with the third cell. In some cases, both the second cell and the third cell may or may not be associated with a parameter set associated with the first cell, in which case UE 115-c may select which cell to communicate with based on additional or alternative characteristics (e.g., SNR, SINR, RSRP, RSRQ).

[0157] At 440, the UE 115-d may determine whether the parameter set associated with the first cell (e.g., the first SIB associated with the first cell) is available for use in the cell selected at 435. In some cases, as previously discussed herein, the determination at 440 may be performed in addition to or alternatively to step 435 when evaluating whether to select a second cell or a third cell. In some cases, the UE 115-d may determine whether the parameter set associated with the first cell is available for use in the selected cell based on a validity period associated with the parameter set. For example, the UE 115-d may receive a control message (e.g., an SSB, an MIB) from the selected cell (e.g., the second cell or the third cell), the control message including an indication of a validity period associated with the parameter set. In this example, the UE 115-d may determine that the parameter set associated with the first cell is available for use in communication with the selected cell based on determining that the parameter set remains unchanged during the validity period. Conversely, as another example, the UE 115-d may determine that the parameter set associated with the first cell is not available for use in communication with the selected cell based on determining that the parameter set is received outside of the validity period.

[0158] If UE 115-d determines that the parameter set associated with the first cell is available for the selected cell (e.g., “Yes” at step 440), process flow 400 may continue to 450. Conversely, if UE 115-d determines that the parameter set associated with the first cell is not available for the selected cell (e.g., “No” at step 440), process flow 400 may continue to 445.

[0159] At 445, UE 115-d may receive (e.g., obtain) one or more SIBs associated with the selected cell. The one or more SIBs associated with the selected cell may include a set of parameters for communicating with the selected cell. In some aspects, UE 115-d may receive the one or more SIBs associated with the selected cell based on determining at 440 that the set of parameters associated with the first cell is not usable for communicating with the selected cell (e.g., based on determining “No” at 440).

[0160] At 450, the UE 115-d may communicate with the selected cell. In some aspects, the UE 115-d may communicate with the selected cell based on performing a reselection procedure with the selected cell. In some aspects, communicating with the second cell at 450 may be based on selecting to communicate with the selected cell at 435. Furthermore, communicating with the selected cell at 450 may be based on determining, at 440, whether a first set of parameters associated with the first cell may be used for communicating with the selected cell. For example, if the UE 115-d determines that a set of parameters associated with the first cell (e.g., a first SIB associated with the first cell) may be used for communicating with the selected cell (e.g., "yes" at step 440), the UE 115-d may communicate with the selected cell at 450 based on (e.g., using) the set of parameters associated with the first cell. As another example, in the event that UE 115-d determines that the parameter set associated with the first cell is not available for communicating with the selected cell (e.g., step 440 is “No”), UE 115-d may communicate with the selected cell at 450 based on one or more SIBs associated with the selected cell received at 445.

[0161] In some aspects, the UE 115-d may determine whether to update a neighbor cell list associated with the first cell. In some cases, the UE 115-d may determine whether to update the neighbor cell list based on communicating with the second cell, performing a reselection procedure with the second cell, or any combination thereof. In some cases, the UE 115-d may determine whether to update the neighbor cell list based on whether the UE 115-d selected the second cell as part of an inter-frequency cell reselection procedure or an intra-frequency cell reselection procedure, as previously described herein.

[0162] The techniques of process flow 400 can improve SIB acquisition in wireless communication systems 100, 200, and 300. In particular, the techniques of process flow 400 can reduce the number of times a UE 115-d acquires SIBs for a new cell. Thus, these techniques can reduce resource and signaling overhead associated with SIB acquisition within the wireless communication system 100, 200, or 300 and can additionally reduce power consumption at the UE 115-d and the satellite 120-c.

[0163] Figure 5 An example of a process flow 500 for supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. In some examples, the process flow 500 can implement aspects of the wireless communication system 100, 200, 300, or any combination thereof. For example, the process flow 500 can be shown as described with reference to Figure 1-4 Improved SIB acquisition techniques and other aspects are described.

[0164] The process flow 500 may include a satellite 120-d and a UE 115-e, which may be as described with reference to FIG. Figure 1-4 500. The following description of process flow 500 illustrates an example of a gNB (or base station 105) and a UE 115. In the following description of process flow 500, operations between satellite 120-d and UE 115-e may be performed in a different order than the example order shown, or the operations performed by satellite 120-d and UE 115-e may be performed in a different order or at a different time. Some operations may also be omitted from process flow 500, and other operations may be added to process flow 500. In some examples, the operations shown in process flow 500 may be performed by hardware (e.g., including circuits, processing blocks, logical components, and other components), code executed by a processor (e.g., software or firmware), or any combination thereof.

[0165] exist Figure 5 In the example of FIG. 5 , satellite 120 - d and UE 115 - e may communicate with each other via an NTN. In particular, satellite 120 - d and UE 115 - e may communicate with each other via one or more cells of the NTN supported by satellite 120 - d. Process flow 500 may support improved SIB acquisition within wireless communication systems 100 , 200 , 300 , or any combination thereof (e.g., improved SIB acquisition within an NTN).

[0166] At 505, the UE 115-e may receive a set of SIBs (e.g., common SIBs) that are common to the set of cells of the NTN supported by the satellite 120-d. In some aspects, the set of SIBs received at 505 may include an indication of one or more parameters common to the set of cells for communication with the set of cells. In some cases, the set of cells may include every cell supported by the satellite 120-d, every cell of the NTN, or both. Additionally or alternatively, the set of cells may include a subset of cells supported by the satellite 120-d, a subset of cells of the NTN, or both. The set of SIBs may include an indication of a set of PIDs associated with the set of cells.

[0167] At 510, the UE 115-e may receive a configuration message that includes an indication of a set of downlink resources for receiving a SIB that includes cell-specific information associated with a set of cells of the NTN. In this regard, the configuration message received at 510 may include an indication of a set of downlink resources that the UE 115-e is to monitor to receive the SIB that includes the cell-specific information from the cells of the NTN. Accordingly, the UE 115-e may monitor the set of downlink resources based on receiving the configuration message including the indication at 510.

[0168] At 515, the UE 115-e may receive one or more SIBs associated with a first cell of the NTN supported by the satellite 120-d. The one or more SIBs received at 515 may include cell-specific information indicating a first set of cell-specific parameters for communicating with the first cell. For example, the UE 115-e may receive a first SIB associated with the first cell, wherein the first SIB includes cell-specific information associated with the first cell indicating a first set of cell-specific parameters for communicating with the first cell. In some aspects, the UE 115-e may receive the cell-specific SIB from the first cell at 515 based on receiving the configuration message at 510 (including an indication of a set of downlink resources). In some aspects, the first SIB associated with the first cell may include a first PID associated with the first cell. In this regard, the UE 115-e may determine whether the first cell is included in the set of cells associated with the set of parameters common to the set of cells based on the set of PIDs associated with the set of cells, the first PID associated with the first cell, or any combination thereof.

[0169] In some aspects, UE 115-e may receive, from the first cell, an indication of a neighbor cell list associated with the first cell. For example, the first SIB including the first cell-specific parameter set received at 515 may include an indication of the neighbor cell list associated with the first cell. Additionally or alternatively, the first SIB including the first cell-specific parameter set associated with the first cell may include an indication of one or more parameters associated with at least one cell of the neighbor cell list. For example, the first SIB including the first cell-specific parameter set associated with the first cell may include one or more SIBs associated with at least one cell of the neighbor cell list.

[0170] At 520, the UE 115-e may identify differences, if any, between the set of parameters common to the set of cells indicated in the SIB(s) received at 505 and the set of cell-specific parameters indicated by the cell-specific SIB(s) received at 515. For example, the UE 115-e may identify cell-specific parameters in the first cell-specific parameter set indicated in the cell-specific information received at 515 that are different from the parameters in the set of parameters common to the set of cells indicated by the SIB set received at 505. As another example, the UE 115-e may identify differences between parameters in the set of parameters common to the set of cells and cell-specific parameters in the first cell-specific parameter set associated with the first cell.

[0171] At 525, the UE 115-e may communicate with a first cell (e.g., a first cell of the NTN) supported by the satellite 120-d. In some aspects, the UE 115-e may communicate with the first cell based on one or more parameters common to the set of cells indicated in the SIB(s) received at 505, one or more cell-specific parameters indicated in the SIB(s) received at 515, or any combination thereof. For example, the UE 115-e may communicate with the first cell based on at least a first subset of the one or more parameters common to the set of cells and a first set of cell-specific parameters associated with the first cell. Additionally, the UE 115-e may communicate with the first cell at 525 based on identifying a difference between the common parameter set and the cell-specific parameter set at 520. In some cases, the first cell may not utilize any cell-specific parameters. In such cases, the UE 115-e may communicate with the first cell at 525 using only the parameter set common to the set of cells.

[0172] At 530, the UE 115-e may receive a downlink message from the satellite 120-d, wherein the downlink message includes an indication that an update (e.g., an SI update) to a first set of cell-specific parameters associated with the first cell is available. The downlink message may include an indication of at least one cell-specific parameter in the first set of cell-specific parameters associated with the first cell. In some cases, the UE 115-e may identify or determine that an update to the set of parameters associated with the first cell is available based on the downlink message received at 535. In additional or alternative aspects, the UE 115-e may determine that an update is available based on determining expiration of a validity period associated with a first SIB associated with the first cell.

[0173] At 535, the UE 115-e may determine whether to perform an update of at least one cell-specific parameter in a first cell-specific parameter set associated with the first cell (e.g., an SI update) or whether to initiate a random access procedure with the first cell. The UE 115-e may determine whether to perform an update of the first cell-specific parameter set associated with the first cell or whether to initiate a random access procedure with the first cell based on an expected duration until a cell reselection procedure (e.g., an expected duration until a cell reselection procedure with a second cell), an expected duration that the UE 115-e is expected to remain within the first cell, a location of the UE 115-e within the NTN (e.g., positioning), whether a random access procedure has been initiated or completed, or any combination thereof.

[0174] For example, in some cases, the UE 115-e may update the first SIB associated with the first cell received at 515 based on receiving a downlink message that includes an indication of a change to at least one cell-specific parameter in a first cell-specific parameter set associated with the first cell. The UE 115-e may then communicate with the first cell based on updating the first SIB associated with the first cell. As another example, in some aspects, the UE 115-e may determine that an expected duration until a cell reselection procedure with the second cell is initiated satisfies a threshold. For example, the UE 115-e may determine that the expected duration until a cell reselection procedure with the second cell is initiated is less than a threshold duration. In this example, the UE 115-e may refrain from updating the first cell-specific parameter set associated with the first cell based on determining that the expected duration satisfies the threshold.

[0175] In some cases, UE 115-e may communicate with the first cell based on updating (or not updating) a cell-specific parameter set associated with the first cell at 535 (e.g., based on updating or not updating the cell-specific SIB received at 515).

[0176] At 540, UE 115-e may receive one or more SIBs associated with a second cell of the NTN supported by satellite 120-d. The one or more SIBs received at 540 may include cell-specific information indicating a second set of cell-specific parameters for communicating with the second cell. For example, due to movement of satellite 120-d, UE 115-e may experience varying cell coverage and may move from a first cell to a second cell. In this example, UE 115-e may receive a second SIB associated with the second cell, wherein the second SIB includes cell-specific information associated with the second cell indicating a second set of cell-specific parameters for communicating with the second cell. In some aspects, UE 115-e may receive the cell-specific SIB from the second cell at 545 based on receiving the configuration message including an indication of a set of downlink resources at 510. In some cases, UE 115-e can identify differences, if any, between a common set of parameters indicated by the common SIB(s) received at 505 and a second set of cell-specific parameters indicated by the cell-specific SIB(s) received at 540.

[0177] At 545, the UE 115-e may communicate with a second cell (e.g., a second cell of the NTN) supported by the satellite 120-d. In some aspects, the UE 115-e may communicate with the second cell based on one or more parameters common to the set of cells indicated in the SIB(s) received at 505, a second set of cell-specific parameters associated with the second cell indicated in the SIB(s) received at 545, or any combination thereof. For example, the UE 115-e may communicate with the second cell using at least a second subset of the set of parameters common to the set of cells and a second set of cell-specific parameters associated with the second cell. Additionally, the UE 115-e may communicate with the second cell at 550 based on identifying a difference between the set of parameters common to the set of cells and the second set of cell-specific parameters associated with the second cell. In some cases, the second cell may not utilize any cell-specific parameters. In such a case, the UE 115-e may communicate with the second cell using only a set of parameters that are common to the set of cells.

[0178] The techniques of process flow 500 can improve SIB acquisition in wireless communication systems 100, 200, and 300. In particular, the techniques of process flow 500 can enable a UE 115-e to acquire only cell-specific parameters specific to a new cell upon entering a new cell, thereby preventing the UE 115-e from having to acquire a complete set of SIBs. Thus, these techniques can reduce resource and signaling overhead associated with SIB acquisition within the wireless communication system 100, 200, or 300, and can also reduce power consumption at the UE 115-e and the satellite 120-d.

[0179] Figure 6 A block diagram 600 is shown of a device 605 that supports SIB acquisition for a wireless network in accordance with aspects of the present disclosure. The device 605 may be an example of aspects of the UE 115 as described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0180] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to SIB acquisition for wireless networks). The information may be passed to other components of the device 605. The receiver 610 may be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The receiver 610 may utilize a single antenna or a group of antennas.

[0181] The communication manager 615 may perform the following operations: communicating with a first cell of the NTN using a parameter set associated with the first cell; communicating with a second cell of the NTN using the parameter set based on determining that a parameter set stored by the UE for the first cell is usable for communicating with the second cell; receiving a control message associated with the second cell of the NTN, the control message including an indication that the parameter set associated with the first cell is usable for communicating with the second cell; and determining, based on receiving the indication, that the parameter set associated with the first cell is usable for communicating with the second cell. The communication manager 615 may also perform the following operations: receiving a SIB set common to a set of cells of the NTN, the SIB set indicating one or more parameters common to the set of cells for communicating with the set of cells; receiving a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first cell-specific parameter set for communicating with the first cell; and communicating with the first cell using the first cell-specific parameter set associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells. Communications manager 615 may be an example of aspects of communications manager 910 described herein.

[0182] The operations performed by the communication manager 615 as described herein can be implemented to achieve one or more potential advantages. For example, by reducing the number of times a UE 115 acquires a new SIB for a new cell, the communication manager 615 can reduce the resources and signaling overhead associated with SIB acquisition within the wireless communication system. Reducing the number of times a UE 115 can acquire a new SIB for a new cell can be particularly important in the context of NTNs, which can exhibit frequent changes in cell coverage. Furthermore, by reducing the resources and signaling overhead associated with SIB acquisition, the communication manager 615 can reduce power consumption at the UE 115.

[0183] Based on reducing the number of times UE 115 acquires a new SIB for a new cell, UE 115 (e.g., a processor controlling receiver 610, communication manager 615, transmitter 620, etc.) can reduce processing resources used for downlink and uplink communications. For example, reducing the number of times UE 115 can acquire a new SIB for a new cell can correspondingly reduce the number of times the processor increases processing power and turns on processing units to handle downlink reception and uplink transmission.

[0184] The communication manager 615 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 615 or its subcomponents may be performed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described in this disclosure.

[0185] The communication manager 615 or its subcomponents can be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 615 or its subcomponents can be combined with one or more other hardware components (including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0186] The transmitter 620 may transmit signals generated by other components of the device 605. In some examples, the transmitter 620 may be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 may be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The transmitter 620 may utilize a single antenna or a group of antennas.

[0187] Figure 7 A block diagram 700 is shown of a device 705 that supports SIB acquisition for a wireless network in accordance with aspects of the present disclosure. The device 705 may be an example of aspects of the device 605 or UE 115 as described herein. The device 705 may include a receiver 710, a communication manager 715, and a transmitter 740. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0188] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to SIB acquisition for wireless networks). The information may be passed to other components of the device 705. The receiver 710 may be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The receiver 710 may utilize a single antenna or a group of antennas.

[0189] The communication manager 715 may be an example of aspects of the communication manager 615 as described herein. The communication manager 715 may include an NTN communication manager 720, a control message reception manager 725, a cell parameter manager 730, and an SIB reception manager 735. The communication manager 715 may be an example of aspects of the communication manager 910 as described herein.

[0190] The NTN communication manager 720 may use a parameter set associated with a first cell of the NTN to communicate with the first cell; and based on determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell, use the parameter set to communicate with the second cell of the NTN.

[0191] The control message reception manager 725 may receive a control message associated with a second cell of the NTN, the control message including an indication that a parameter set associated with the first cell can be used for communication with the second cell. The cell parameter manager 730 may determine, based on receiving the indication, that the parameter set associated with the first cell can be used for communication with the second cell.

[0192] The SIB reception manager 735 may receive a SIB set that is common to a set of cells of the NTN, the SIB set indicating one or more parameters that are common to the set of cells for communication with the set of cells; and receive a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first cell-specific parameter set for communication with the first cell.

[0193] The NTN communication manager 720 may communicate with the first cell using a first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of one or more parameters common to a set of cells.

[0194] The transmitter 740 can transmit signals generated by other components of the device 705. In some examples, the transmitter 740 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 740 can be a reference Figure 9 Examples of aspects of the transceiver 920 are described. The transmitter 740 may utilize a single antenna or a group of antennas.

[0195] Figure 8A block diagram 800 is shown of a communication manager 805 that supports SIB acquisition for a wireless network in accordance with aspects of the present disclosure. The communication manager 805 can be an example of aspects of the communication manager 615, the communication manager 715, or the communication manager 910 described herein. The communication manager 805 can include an NTN communication manager 810, a control message reception manager 815, a cell parameter manager 820, a validity period manager 825, a cell reselection manager 830, an RRC reception manager 835, a SIB reception manager 840, a neighbor cell list manager 845, and a configuration message reception manager 850. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0196] The NTN communication manager 810 can communicate with a first cell of the NTN using a parameter set associated with the first cell. In some examples, the NTN communication manager 810 can communicate with the second cell of the NTN using the parameter set based on determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell. In some examples, the NTN communication manager 810 can communicate with the first cell using a first cell-specific parameter set associated with cell-specific information of the first cell and at least a first subset of one or more parameters common to the set of cells.

[0197] In some examples, the NTN communication manager 810 may communicate with the third cell based on receiving one or more SIBs. In some examples, the NTN communication manager 810 may communicate with the second cell using one or more parameters common to the set of cells indicated by the SIB set. In some examples, the NTN communication manager 810 may communicate with the first cell based on updating the first SIB. In some examples, the NTN communication manager 810 may communicate with the second cell using a second set of cell-specific parameters associated with the cell-specific information of the first cell and at least a second subset of the one or more parameters common to the set of cells.

[0198] The control message reception manager 815 may receive a control message associated with a second cell of the NTN, the control message including an indication that a parameter set associated with the first cell may be used for communication with the second cell. In some examples, the control message reception manager 815 may receive a second control message associated with a third cell of the NTN. In some cases, the control message includes an SSB or MIB.

[0199] The cell parameter manager 820 may determine, based on the received indication, that a parameter set associated with the first cell is usable for communication with the second cell. In some examples, the cell parameter manager 820 may determine that a parameter set stored by the UE for the first cell is not usable for communication with a third cell of the NTN. In some examples, the cell parameter manager 820 may identify that an update to the parameter set associated with the first cell is available. In some examples, the cell parameter manager 820 may refrain from updating the parameter set based on determining that an expected duration satisfies a threshold. In some examples, the cell parameter manager 820 may identify that an update to the parameter set associated with the second cell is available.

[0200] In some examples, the cell parameter manager 820 may identify a cell-specific parameter in a first cell-specific parameter set that is different from a common parameter indicated by a SIB set that is common to the set of cells, the cell-specific information included in the first SIB indicating the cell-specific parameter, wherein communicating with the first cell is based on identifying the cell-specific parameter. In some examples, the cell parameter manager 820 may identify a difference between the common parameter indicated by the SIB set that is common to the set of cells and the cell-specific parameter in the first cell-specific parameter set, the cell-specific information included in the first SIB indicating the difference, wherein communicating with the first cell is based on identifying the difference.

[0201] In some examples, the cell parameter manager 820 may receive a downlink message from a first cell, the downlink message including an indication of a change to at least one cell-specific parameter in a first cell-specific parameter set associated with the first cell. In some examples, the cell parameter manager 820 may update a first SIB associated with the first cell based on receiving the downlink message. In some examples, the cell parameter manager 820 may identify that an update to the first cell-specific parameter set associated with the first cell is available. In some examples, the cell parameter manager 820 may avoid updating the first cell-specific parameter set based on determining that an expected duration satisfies a threshold. In some cases, the parameter set is used by each cell of the NTN associated with a satellite of the NTN. In some cases, the parameter set is used by a subset of cells of the NTN associated with a satellite of the NTN.

[0202] The SIB reception manager 840 may receive a set of SIBs common to a set of cells of the NTN, the SIB set indicating one or more parameters common to the set of cells for communication with the set of cells. In some examples, the SIB reception manager 840 may receive a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell. In some examples, the SIB reception manager 840 may receive one or more SIBs associated with the third cell based on determining that a set of parameters stored by the UE for the first cell is not usable for communication with the third cell. In some examples, the SIB reception manager 840 may receive one or more SIBs associated with the first cell, the one or more SIBs including a set of parameters for communication with the first cell of the NTN, wherein communication with the first cell is based on receiving the one or more SIBs. In some examples, the SIB reception manager 840 may receive a second SIB associated with a second cell in the set of cells of the NTN, the second SIB including second cell-specific information indicating a second set of cell-specific parameters for communication with the second cell.

[0203] The validity period manager 825 may receive a second indication of a validity period associated with the parameter set, wherein determining that the parameter set stored by the UE for the first cell can be used for communication with the second cell is based on the validity period. In some examples, the validity period manager 825 may determine that the parameter set remains unchanged during the validity period based on receiving the indication. In some examples, the validity period manager 825 may determine that the parameter set associated with the first cell was received outside the validity period associated with the parameter set, wherein receiving one or more SIBs associated with the third cell is based on determining that the parameter set associated with the first cell was received outside the validity period. In some cases, the second indication of the validity period is received as part of an SIB, an SSB, or a combination thereof.

[0204] The cell reselection manager 830 may select to communicate with the second cell based on a parameter set stored by the UE being associated with the second cell instead of the third cell, wherein communicating with the second cell is based on selecting to communicate with the second cell. In some examples, the cell reselection manager 830 may determine that the first cell belongs to the set of cells based on a second indication of a set of physical cell identifiers associated with the parameter set. In some examples, the cell reselection manager 830 may select the second cell as part of an intra-frequency cell reselection process or an inter-frequency cell reselection process with the second cell, wherein communicating with the second cell is based on selecting the second cell. In some examples, the cell reselection manager 830 may select the second cell as part of an intra-frequency cell reselection process with the second cell, wherein communicating with the second cell is based on selecting the second cell. In some examples, the cell reselection manager 830 may select the second cell as part of an inter-frequency cell reselection process with the second cell, wherein communicating with the second cell is based on selecting the second cell.

[0205] In some examples, the cell reselection manager 830 may determine that an expected duration until initiating a cell reselection procedure with the second cell satisfies a threshold. In some examples, the cell reselection manager 830 may perform a cell reselection procedure with the second cell based on determining that the expected duration satisfies the threshold. In some examples, the cell reselection manager 830 may avoid performing an attach procedure with the second cell based on identifying that an update to a parameter set for the first cell is usable. In some examples, the cell reselection manager 830 may perform a cell reselection procedure with a third cell of the NTN based on identifying that an update to a parameter set for the first cell is usable.

[0206] In some examples, the cell reselection manager 830 may determine that an expected duration until initiating a cell reselection procedure with the second cell satisfies a threshold. In some examples, the cell reselection manager 830 may perform a cell reselection procedure with the second cell based on determining that the expected duration satisfies the threshold. In some examples, the cell reselection manager 830 may determine that an update to a first set of cell-specific parameters for the first cell may be used to avoid performing an attach procedure with the first cell. In some examples, the cell reselection manager 830 may determine that an update to a first set of cell-specific parameters for the first cell may be used to perform a cell reselection procedure with the second cell.

[0207] The RRC reception manager 835 may receive an RRC message or a NAS message including one or more SIB sets associated with a cell set of the NTN based on a predicted path of the UE relative to the NTN, wherein the cell set includes a first cell and a second cell, wherein communicating with the first cell is based on receiving the RRC message or the NAS message.

[0208] The neighbor cell list manager 845 may receive a downlink message including a neighbor cell list associated with a first cell and one or more parameters associated with at least one cell in the neighbor cell list, wherein communicating with the first cell is based on receiving the downlink message. In some examples, the neighbor cell list manager 845 may refrain from updating the neighbor cell list associated with the second cell based on selecting the second cell as part of an intra-frequency cell reselection process or an inter-frequency cell reselection process. In some examples, the neighbor cell list manager 845 may update the neighbor cell list associated with the second cell based on selecting the second cell as part of an intra-frequency cell reselection process. In some examples, the neighbor cell list manager 845 may update the neighbor cell list associated with the second cell based on selecting the second cell as part of an inter-frequency cell reselection process. In some examples, the neighbor cell list manager 845 may receive an indication of the neighbor cell list associated with the first cell based on receiving a first SIB from the first cell.

[0209] The configuration message reception manager 850 may receive a configuration message including an indication of a set of downlink resources for receiving a SIB including cell-specific information, wherein receiving a first SIB for a first cell is based on receiving the configuration message.

[0210] Figure 9 A diagram of a system 900 including a device 905 that supports SIB acquisition for a wireless network in accordance with various aspects of the present disclosure is shown. The device 905 may be an example of, or include components of, the device 605, device 705, or UE 115 as described herein. The device 905 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components may communicate electronically via one or more buses (e.g., bus 945).

[0211] The communication manager 910 may perform the following operations: communicating with a first cell of the NTN using a parameter set associated with the first cell; communicating with a second cell of the NTN using the parameter set based on determining that a parameter set stored by the UE for the first cell is usable for communicating with the second cell; receiving a control message associated with the second cell of the NTN, the control message including an indication that the parameter set associated with the first cell is usable for communicating with the second cell; and determining, based on receiving the indication, that the parameter set associated with the first cell is usable for communicating with the second cell. The communication manager 910 may also perform the following operations: receiving a SIB set common to a set of cells of the NTN, the SIB set indicating one or more parameters common to the set of cells for communicating with the set of cells; receiving a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first cell-specific parameter set for communicating with the first cell; and communicating with the first cell using the first cell-specific parameter set associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0212] I / O controller 915 can manage input and output signals for device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can utilize a computer such as , or another known operating system. In other cases, I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0213] The transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 920 can also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and demodulating packets received from the antenna.

[0214] In some cases, a wireless device may include a single antenna 925. However, in some cases, the device may have more than one antenna 925 that are capable of sending or receiving multiple wireless transmissions simultaneously.

[0215] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935, which includes instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 930 may also contain a basic I / O system (BIOS), etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0216] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks that support SIB acquisition for a wireless network).

[0217] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 935 may not be directly executable by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0218] Figure 10 A block diagram 1000 is shown of a device 1005 that supports SIB acquisition for a wireless network in accordance with various aspects of the present disclosure. The device 1005 can be an example of aspects of a base station 105 as described herein. The device 1005 can include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0219] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to SIB acquisition for wireless networks). The information may be communicated to other components of the device 1005. The receiver 1010 may be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The receiver 1010 may utilize a single antenna or a group of antennas.

[0220] The communication manager 1015 may perform the following operations: communicating with a UE via a first cell of the NTN using a parameter set associated with the first cell; communicating with the UE via a second cell of the NTN using the parameter set based on sending a control message; and sending a control message associated with the second cell of the NTN, the control message including an indication that the parameter set associated with the first cell can be used for communicating with the second cell. The communication manager 1015 may also perform the following operations: sending to the UE a SIB set common to a set of cells of the NTN, the SIB set indicating one or more parameters common to the set of cells for communication with the set of cells; sending a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first cell-specific parameter set for communication with the first cell; and communicating with the UE via the first cell using the first cell-specific parameter set associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells. The communication manager 1015 may be an example of aspects of the communication manager 1310 described herein.

[0221] The operations performed by the communication manager 1015 as described herein can be implemented to achieve one or more potential advantages. For example, by reducing the number of times a UE 115 acquires a new SIB for a new cell (e.g., reducing the number of times a base station 105 transmits a new SIB for a new cell), the communication manager 1015 can reduce the resource and signaling overhead associated with SIB acquisition within the wireless communication system. Reducing the number of times a UE 115 can acquire a new SIB for a new cell can be particularly important in the context of NTNs, which can exhibit frequent changes in cell coverage. Furthermore, by reducing the resource and signaling overhead associated with SIB acquisition, the communication manager 1015 can reduce power consumption at the UE 115 and the base station 105.

[0222] Based on reducing the number of times UE 115 acquires a new SIB for a new cell (e.g., reducing the number of times base station 105 transmits a new SIB for a new cell), UE 115 (e.g., a processor controlling receiver 1010, communications manager 1015, transmitter 1020, etc.) can reduce processing resources used for downlink and uplink communications. For example, reducing the number of times base station 105 can transmit a new SIB for a new cell can correspondingly reduce the number of times the processor boosts processing power and turns on processing units to handle downlink transmissions and uplink receptions.

[0223] The communication manager 1015 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be performed by a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0224] The communication manager 1015 or its subcomponents can be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents can be combined with one or more other hardware components (including but not limited to input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0225] The transmitter 1020 may transmit signals generated by other components of the device 1005. In some examples, the transmitter 1020 may be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 may be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1020 may utilize a single antenna or a group of antennas.

[0226] Figure 11 A block diagram 1100 is shown of a device 1105 that supports SIB acquisition for a wireless network in accordance with various aspects of the present disclosure. The device 1105 may be an example of aspects of the device 1005 or base station 105 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1135. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0227] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to SIB acquisition for wireless networks). The information may be communicated to other components of the device 1105. The receiver 1110 may be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The receiver 1110 may utilize a single antenna or a group of antennas.

[0228] The communication manager 1115 may be an example of aspects of the communication manager 1015 as described herein. The communication manager 1115 may include an NTN communication manager 1120, a control message transmission manager 1125, and an SIB transmission manager 1130. The communication manager 1115 may be an example of aspects of the communication manager 1310 as described herein.

[0229] The NTN communication manager 1120 may communicate with the UE via a first cell of the NTN using a parameter set associated with the first cell; and communicate with the UE via a second cell of the NTN using the parameter set based on sending a control message.

[0230] The control messaging manager 1125 may transmit a control message associated with the second cell of the NTN, the control message including an indication that a parameter set associated with the first cell may be used for communicating with the second cell.

[0231] The SIB sending manager 1130 can send a SIB set that is common to the cell set of the NTN to the UE, and the SIB set indicates one or more parameters that are common to the cell set for communication with the cell set; and send a first SIB associated with a first cell in the cell set of the NTN, the first SIB including cell-specific information, and the cell-specific information indicating a first cell-specific parameter set for communication with the first cell.

[0232] The NTN communication manager 1120 may communicate with the UE via the first cell using a first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of one or more parameters common to a set of cells.

[0233] The transmitter 1135 can transmit signals generated by other components of the device 1105. In some examples, the transmitter 1135 can be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1135 can be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1135 may utilize a single antenna or a group of antennas.

[0234] Figure 12 A block diagram 1200 is shown of a communication manager 1205 that supports SIB acquisition for a wireless network in accordance with aspects of the present disclosure. The communication manager 1205 can be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 can include an NTN communication manager 1210, a control message transmission manager 1215, a validity period manager 1220, an SIB transmission manager 1225, a cell parameter manager 1230, an RRC transmission manager 1235, a neighbor cell list manager 1240, a cell-specific parameter manager 1245, a common parameter manager 1250, and a configuration message transmission manager 1255. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0235] The NTN communication manager 1210 may communicate with the UE via the first cell using a parameter set associated with a first cell of the NTN. In some examples, the NTN communication manager 1210 may communicate with the UE via a second cell of the NTN using the parameter set based on sending a control message. In some examples, the NTN communication manager 1210 may communicate with the UE via the first cell using a first cell-specific parameter set associated with the cell-specific information of the first cell and at least a first subset of one or more parameters common to a set of cells. In some examples, the NTN communication manager 1210 may communicate with the UE via a third cell based on sending one or more SIBs. In some examples, the NTN communication manager 1210 may communicate with the UE via the first cell based on sending a downlink message. In some examples, the NTN communication manager 1210 may communicate with the UE via the second cell using a second cell-specific parameter set associated with the cell-specific information of the first cell and at least a second subset of one or more parameters common to the set of cells.

[0236] The control message sending manager 1215 may send a control message associated with the second cell of the NTN, the control message including an indication that a parameter set associated with the first cell may be used for communicating with the second cell. In some cases, the control message includes an SSB or MIB.

[0237] The SIB transmission manager 1225 may transmit to the UE a set of SIBs that are common to the set of cells of the NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells. In some examples, the SIB transmission manager 1225 may transmit a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell. In some examples, the SIB transmission manager 1225 may transmit one or more SIBs associated with the first cell and including a set of parameters for communication with the first cell of the NTN, wherein communication with the first cell is based on receiving the one or more SIBs.

[0238] In some examples, the SIB transmission manager 1225 may transmit a second indication of a set of physical cell identifiers associated with the parameter set. In some examples, the SIB transmission manager 1225 may transmit one or more SIBs associated with the third cell based on a determination that the parameter set associated with the first cell stored by the UE is not usable for communication with the third cell of the NTN. In some examples, the SIB transmission manager 1225 may transmit a second SIB associated with a second cell in the set of cells of the NTN, the second SIB including second cell-specific information indicating a second cell-specific parameter set for communication with the second cell.

[0239] The validity period manager 1220 may send a second indication of a validity period associated with the parameter set, wherein communicating with the UE via the second cell of the NTN using the parameter set is based on the validity period. In some cases, the second indication of the validity period is sent as part of an SIB, an SSB, or a combination thereof.

[0240] The cell parameter manager 1230 may determine a second indication that a parameter set associated with the first cell stored by the UE is unusable for communicating with a third cell of the NTN. In some cases, the parameter set is used by each cell of the NTN associated with a satellite of the NTN. In some cases, the parameter set is used by a subset of cells of the NTN associated with a satellite of the NTN.

[0241] The RRC transmission manager 1235 may send an RRC message or a NAS message including one or more SIB sets associated with a cell set of the NTN based on a predicted path of the UE relative to the NTN, wherein the cell set includes a first cell and a second cell, wherein communication with the UE via the first cell is based on sending the RRC message or the NAS message.

[0242] The neighbor cell list manager 1240 may send a downlink message including a second indication of a neighbor cell list associated with the first cell and one or more parameters associated with at least one cell in the neighbor cell list, wherein communicating with the UE via the first cell is based on sending the downlink message. In some examples, the neighbor cell list manager 1240 may send the indication of the neighbor cell list associated with the first cell based on sending a first SIB from the first cell.

[0243] The cell-specific parameter manager 1245 may identify a cell-specific parameter in a first cell-specific parameter set that is different from a common parameter indicated by a SIB set common to the set of cells, cell-specific information included in the first SIB indicating the cell-specific parameter, wherein communicating with the UE via the first cell is based on identifying the cell-specific parameter. In some examples, the cell-specific parameter manager 1245 may identify a difference between the common parameter indicated by the SIB set common to the set of cells and the cell-specific parameter in the first cell-specific parameter set, cell-specific information included in the first SIB indicating the difference, wherein communicating with the UE via the first cell is based on identifying the difference. In some examples, the cell-specific parameter manager 1245 may send a downlink message to the UE via the first cell, the downlink message including an indication of a change in at least one cell-specific parameter in the first cell-specific parameter set associated with the first cell.

[0244] The common parameter manager 1250 may communicate with the UE via the third cell using one or more parameters indicated by the SIB set common to the set of cells. In some cases, the one or more parameters common to the set of cells are used by each cell of the NTN associated with the satellite of the NTN. In some cases, the one or more parameters common to the set of cells are used by a subset of cells of the NTN associated with the satellite of the NTN.

[0245] The configuration message sending manager 1255 may send a configuration message including an indication of a set of downlink resources for sending a SIB including cell-specific information, wherein sending a first SIB for a first cell is based on sending the configuration message.

[0246] Figure 13A diagram of a system 1300 including a device 1305 supporting SIB acquisition for a wireless network in accordance with various aspects of the present disclosure is shown. The device 1305 may be an example of, or include components of, the device 1005, device 1105, or base station 105 as described herein. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1310, a network communication manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communication manager 1345. These components may communicate electronically via one or more buses, such as a bus 1350.

[0247] The communication manager 1310 may perform the following operations: communicating with a UE via a first cell of the NTN using a parameter set associated with the first cell; communicating with the UE via a second cell of the NTN using the parameter set based on sending a control message; and sending a control message associated with the second cell of the NTN, the control message including an indication that the parameter set associated with the first cell can be used for communicating with the second cell. The communication manager 1310 may also perform the following operations: sending to the UE a SIB set that is common to a set of cells of the NTN, the SIB set indicating one or more parameters common to the set of cells for communication with the set of cells; sending a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information indicating a first cell-specific parameter set for communication with the first cell; and communicating with the UE via the first cell using the first cell-specific parameter set associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0248] The network communications manager 1315 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1315 may manage the transmission of data communications for client devices (eg, one or more UEs 115).

[0249] The transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 1320 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1320 can also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and demodulating packets received from the antenna.

[0250] In some cases, a wireless device may include a single antenna 1325. However, in some cases, the device may have more than one antenna 1325 that are capable of sending or receiving multiple wireless transmissions simultaneously.

[0251] Memory 1330 may include RAM, ROM, or a combination thereof. Memory 1330 may store computer-readable code 1335, which includes instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some cases, memory 1330 may include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0252] The processor 1340 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1340 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into the processor 1340. The processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause the device 1305 to perform various functions (e.g., functions or tasks that support SIB acquisition for a wireless network).

[0253] The inter-site communication manager 1345 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with the UE 115 in cooperation with the other base stations 105. For example, the inter-site communication manager 1345 can coordinate the scheduling of transmissions to the UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1345 can provide an X2 interface within the LTE / LTE-A wireless communication network technology to provide communications between the base stations 105.

[0254] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 1335 may not be directly executable by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0255] Figure 14A flow chart illustrating a method 1400 for supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0256] At 1405, the UE may communicate with the first cell using a set of parameters associated with the first cell of the NTN. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be as described with reference to Figures 6 to 9 The NTN Communication Manager described here is used to perform

[0257] At 1410, the UE may receive a control message associated with a second cell of the NTN, the control message including an indication that a parameter set associated with the first cell may be used for communicating with the second cell. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be as described with reference to Figures 6 to 9 The control message receiving manager described here is executed.

[0258] At 1415, the UE may determine, based on the received indication, that a parameter set associated with the first cell may be used to communicate with the second cell. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 6 to 9 The cell parameter manager described is executed.

[0259] At 1420, the UE may communicate with the second cell of the NTN using the parameter set based on determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell. The operations of 1420 may be performed according to the methods described herein. In some examples, aspects of the operations of 1420 may be as described with reference to Figures 6 to 9 The NTN Communication Manager described here is used to perform

[0260] Figure 15 A flow chart illustrating a method 1500 for supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0261] At 1505, the UE may receive a set of SIBs that are common to a set of cells of the NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be as described with reference to Figures 6 to 9 The SIB reception manager described in this document is used to perform the following operations:

[0262] At 1510, the UE may receive a first SIB associated with a first cell in a set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed as described with reference to Figures 6 to 9 The SIB reception manager described in this document is used to perform the following operations:

[0263] At 1515, the UE may communicate with the first cell using a first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of one or more parameters common to the set of cells. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed as described with reference to Figures 6 to 9 The NTN Communication Manager described here is used to perform

[0264] Figure 16 A flow chart illustrating a method 1600 for supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0265] At 1605, the base station may communicate with the UE via the first cell using a parameter set associated with the first cell of the NTN. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be as described with reference to Figures 10 to 13 The NTN Communication Manager described here is used to perform

[0266] At 1610, the base station may send a control message associated with a second cell of the NTN, the control message including an indication that a parameter set associated with the first cell may be used for communicating with the second cell. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 10 to 13 The control messages described are sent to the manager for execution.

[0267] At 1615, the base station may communicate with the UE via the second cell of the NTN using the parameter set based on sending the control message. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be as described with reference to Figures 10 to 13 The NTN Communication Manager described here is used to perform

[0268] Figure 17 A flow chart illustrating a method 1700 for supporting SIB acquisition for a wireless network according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0269] At 1705, the base station may send a SIB set common to a set of cells of the NTN to the UE, the SIB set indicating one or more parameters common to the set of cells for communication with the set of cells. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be as described with reference to Figures 10 to 13 The SIB transmission manager described in this document is used to perform the following operations:

[0270] At 1710, the base station may transmit a first SIB associated with a first cell in a set of cells of the NTN, the first SIB including cell-specific information indicating a first set of cell-specific parameters for communication with the first cell. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed as described with reference to Figures 10 to 13 The SIB transmission manager described in this document is used to perform the following operations:

[0271] At 1715, the base station may communicate with the UE via the first cell using a first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of one or more parameters common to the set of cells. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed as described with reference to Figures 10 to 13 The NTN Communication Manager described here is used to perform

[0272] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0273] The following provides a summary of various aspects of the present disclosure:

[0274] Aspect 1: A method for wireless communication at a UE, comprising: receiving a set of SIBs that are common to a set of cells of an NTN, the set of SIBs indicating one or more parameters common to the set of cells for communication with the set of cells; receiving a first SIB associated with a first cell in the set of cells of the NTN, the first SIB including cell-specific information, the cell-specific information indicating a first set of cell-specific parameters for communication with the first cell; and communicating with the first cell using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

[0275] Aspect 2: The method according to Aspect 1 also includes: identifying a cell-specific parameter in the first cell-specific parameter set that is different from the common parameters indicated by the SIB set that is common to the cell set, and the cell-specific information included in the first SIB indicates the cell-specific parameter, wherein communication with the first cell is at least partially based on identifying the cell-specific parameter.

[0276] Aspect 3: The method according to any one of Aspects 1 to 2 further includes: identifying the difference between the common parameters indicated by the SIB set that is common to the cell set and the cell-specific parameters in the first cell-specific parameter set, the additional public parameters associated with the first cell, or both, the cell-specific information included in the first SIB of the first cell indicating the difference, wherein communicating with the first cell is at least partly based on identifying the difference.

[0277] Aspect 4: The method according to any one of aspects 1 to 3, further comprising: communicating with a second cell using the one or more parameters indicated by the SIB set that is common to the set of cells.

[0278] Aspect 5: The method according to any one of aspects 1 to 4, further comprising: identifying the set of SIBs that are common to the set of cells based at least in part on a geographic coverage area, a tracking area, or both.

[0279] Aspect 6: The method according to any one of Aspects 1 to 5 further includes: receiving the non-terrestrial network-specific parameter set, the satellite-specific parameter set, or both based at least in part on a configured period or at least in part on receiving an indication for obtaining the non-terrestrial network-specific parameter set, the satellite-specific parameter set, or both.

[0280] Aspect 7: The method according to any one of Aspects 1 to 6 also includes: avoiding receiving a non-terrestrial network-specific parameter set, a satellite-specific parameter set, or both based at least in part on receiving an indication of a change to the first cell-specific parameter set or a change to the one or more parameters that are common to the cell set.

[0281] Aspect 8: The method according to any one of Aspects 1 to 7 further includes: receiving a configuration message, the configuration message including an indication of a downlink resource set for receiving the SIB including the cell-specific information, wherein receiving the first SIB for the first cell is at least partially based on receiving the configuration message.

[0282] Aspect 9: The method according to any one of Aspects 1 to 8 further includes: receiving a downlink message from the first cell, the downlink message including an indication of a change in at least one cell-specific parameter in the first cell-specific parameter set associated with the first cell or at least one parameter in the one or more parameters common to the cell set; updating the first SIB associated with the first cell based at least in part on receiving the downlink message; and communicating with the first cell based at least in part on updating the first SIB.

[0283] Aspect 10: The method according to any one of Aspects 1 to 9 further includes: receiving a second SIB associated with a second cell in the cell set of the NTN, the second SIB including second cell-specific information, the second cell-specific information indicating a second cell-specific parameter set for communication with the second cell; and communicating with the second cell using the second cell-specific parameter set associated with the cell-specific information of the first cell and at least a second subset of the one or more parameters that are common to the cell set.

[0284] Aspect 11: The method according to any one of aspects 1 to 10 further comprises: receiving an indication of a neighbor cell list associated with the first cell based at least in part on receiving the first SIB from the first cell.

[0285] Aspect 12: The method according to aspect 11 further includes: receiving an indication of a period, a next update time, or both associated with an additional SIB based at least in part on receiving the first SIB, the additional SIB being associated with at least one cell of the neighbor cell list.

[0286] Aspect 13: The method according to any one of Aspects 1 to 12 further includes: identifying that an update to the first cell-specific parameter set associated with the first cell is available; determining that an expected duration until initiating a cell reselection process with a second cell satisfies a threshold; avoiding updating the first cell-specific parameter set based at least in part on determining that the expected duration satisfies the threshold; and performing the cell reselection process with the second cell based at least in part on determining that the expected duration satisfies the threshold.

[0287] Aspect 14: The method according to aspect 13 further comprises: after performing the cell reselection procedure, receiving the update to the first cell-specific parameter set associated with the first cell.

[0288] Aspect 15: The method according to any one of Aspects 1 to 14 further includes: identifying whether an update to the first cell-specific parameter set associated with the first cell is available; at least in part based on identifying that the update to the first cell-specific parameter set for the first cell can be used to avoid performing an attachment process with the first cell; and at least in part based on the availability of the update to the first cell-specific parameter set for the first cell, after receiving the update to the first cell-specific parameter set associated with the first cell, performing an attachment process.

[0289] Aspect 16: The method according to any one of aspects 1 to 15, wherein the one or more parameters that are common to the set of cells are used by each cell of the NTN associated with a satellite of the NTN.

[0290] Aspect 17: The method according to any one of aspects 1 to 16, wherein the one or more parameters that are common to the set of cells are used by a subset of cells of the NTN associated with a satellite of the NTN.

[0291] Aspect 18: A method for wireless communication at a UE, comprising: using a parameter set associated with a first cell of an NTN to communicate with the first cell; receiving a control message associated with a second cell of the NTN, the control message including an indication that the parameter set associated with the first cell can be used to communicate with the second cell; determining, at least in part based on receiving the indication, that the parameter set associated with the first cell can be used to communicate with the second cell; and using the parameter set to communicate with the second cell of the NTN based, at least in part, on determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell.

[0292] Aspect 19: The method according to Aspect 18 further includes: receiving a second indication of a validity period associated with the parameter set, wherein determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell is at least partially based on the validity period.

[0293] Aspect 20: The method according to any one of Aspects 18 to 19 further includes: receiving a second control message associated with a third cell of the NTN; and selecting to communicate with the second cell based at least in part on the parameter set stored by the UE being associated with the second cell rather than the third cell, wherein communicating with the second cell is based at least in part on selecting to communicate with the second cell.

[0294] Aspect 21: The method according to any one of Aspects 18 to 20 further includes: receiving an RRC message or a non-access layer message including one or more SIB sets associated with a cell set of the NTN based at least in part on the predicted path of the UE relative to the NTN, wherein the cell set includes the first cell and the second cell, and wherein communicating with the first cell is based at least in part on receiving the RRC message or the non-access layer message.

[0295] Aspect 22: A method according to any one of Aspects 18 to 21, wherein determining that the parameter set stored by the UE for the first cell can be used to communicate with the second cell includes: determining that the parameter set remains unchanged during the validity period based at least in part on receiving the indication.

[0296] Aspect 23: The method according to any one of Aspects 18 to 22 further includes: determining that the parameter set stored by the UE for the first cell is not available for communication with a third cell of the NTN; receiving one or more SIBs associated with the third cell based at least in part on determining that the parameter set stored by the UE for the first cell is not available for communication with the third cell; and communicating with the third cell based at least in part on receiving the one or more SIBs.

[0297] Aspect 24: The method according to any one of Aspects 18 to 23 further includes: receiving one or more SIBs associated with the first cell, the one or more SIBs including the parameter set for communicating with the first cell of the NTN, wherein communicating with the first cell is at least partially based on receiving the one or more SIBs; and determining that the first cell belongs to a cell set based at least in part on a second indication of a set of physical cell identifiers associated with the parameter set.

[0298] Aspect 25: The method according to any one of Aspects 18 to 24 further includes: receiving a downlink message, the downlink message including a neighbor cell list associated with the first cell and one or more parameters associated with at least one cell in the neighbor cell list, wherein communicating with the first cell is at least partially based on receiving the downlink message.

[0299] Aspect 26: The method according to Aspect 25 also includes: selecting the second cell as part of an intra-frequency cell reselection process or an inter-frequency cell reselection process with the second cell, wherein communicating with the second cell is at least partially based on selecting the second cell; and avoiding updating the neighbor cell list associated with the second cell based at least partially on selecting the second cell as part of the intra-frequency cell reselection process or the inter-frequency cell reselection process.

[0300] Aspect 27: The method according to any one of Aspects 25 to 26 further includes: selecting the second cell as part of an intra-frequency cell reselection process with the second cell, wherein communicating with the second cell is at least partially based on selecting the second cell; and updating the neighbor cell list associated with the second cell at least partially based on selecting the second cell as part of the intra-frequency cell reselection process.

[0301] Aspect 28: The method according to any one of Aspects 25 to 27 further includes: selecting the second cell as part of an inter-frequency cell reselection process with the second cell, wherein communicating with the second cell is at least partially based on selecting the second cell; and updating the neighbor cell list associated with the second cell at least partially based on selecting the second cell as part of the inter-frequency cell reselection process.

[0302] Aspect 29: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of aspects 1 to 17.

[0303] Aspect 30: An apparatus for wireless communication at a UE, comprising at least one unit for performing the method according to any one of aspects 1 to 17.

[0304] Aspect 31: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 17.

[0305] Aspect 32: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of aspects 18 to 28.

[0306] Aspect 33: An apparatus for wireless communication at a UE, comprising at least one means for performing the method according to any one of aspects 18 to 28.

[0307] Aspect 34: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 18 to 28.

[0308] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0309] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0310] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0311] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or a combination of any of these. Features that implement the functions may also be physically located at various locations, including being distributed so that portions of the functions are implemented at different physical locations.

[0312] Computer readable medium includes non-transient computer storage medium and communication medium, and communication medium includes any medium that promotes the transmission of computer program from one place to another place.Non-transient storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.By way of example and not limitation, non-transient computer readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage device or can be used for carrying or storing desired program code unit and any other non-transient medium that can be accessed by general-purpose or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is suitably referred to as computer readable medium.For example, if software is to be sent from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer readable medium. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0313] As used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of 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 interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could 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 be interpreted in the same manner as the phrase "based at least in part on" is interpreted.

[0314] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number to distinguish between similar components. If only the first reference number is used in the specification, the description applies to any one of the similar components having the same first reference number, regardless of the second reference number or other subsequent reference numbers.

[0315] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that can be implemented or within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," rather than "preferred" or "having advantages over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0316] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the overall principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is intended to be used in the broadest sense consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), the method comprising: receiving a set of system information blocks common to a set of cells of a non-terrestrial network, the set of system information blocks indicating one or more parameters common to the set of cells for communication with the set of cells; receiving a first system information block associated with a first cell of the set of cells of the non-terrestrial network, the first system information block comprising cell-specific information indicating a first set of cell-specific parameters for communications with the first cell; and Communicating with the first cell is performed using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

2. The method according to claim 1, further comprising: identifying a cell-specific parameter in the first set of cell-specific parameters that is different from common parameters indicated by the set of system information blocks that are common to the set of cells, the cell-specific information included in the first system information block indicating the cell-specific parameter, wherein communicating with the first cell is based at least in part on identifying the cell-specific parameter.

3. The method according to claim 1, further comprising: identifying a difference between common parameters indicated by the set of system information blocks that are common to the set of cells and cell-specific parameters in the first set of cell-specific parameters, additional common parameters associated with the first cell, or both, the cell-specific information included in the first system information block of the first cell indicating the difference, wherein communicating with the first cell is based at least in part on identifying the difference.

4. The method according to claim 1, further comprising: The one or more parameters indicated by the set of system information blocks common to the set of cells are used to communicate with a second cell.

5. The method according to claim 1, further comprising: The set of system information blocks common to the set of cells is identified based at least in part on a geographic coverage area, a tracking area, or both.

6. The method according to claim 1, further comprising: The non-terrestrial network specific set of parameters, the satellite specific set of parameters, or both are received based at least in part on a configured period or based at least in part on receiving an indication to obtain the non-terrestrial network specific set of parameters, the satellite specific set of parameters, or both.

7. The method according to claim 1, further comprising: Receiving a non-terrestrial network-specific parameter set, a satellite-specific parameter set, or both is avoided based at least in part on receiving an indication of a change to the first cell-specific parameter set or a change to the one or more parameters common to the set of cells.

8. The method according to claim 1, further comprising: A configuration message is received, the configuration message including an indication of a set of downlink resources for receiving a system information block including the cell-specific information, wherein receiving the first system information block for the first cell is based at least in part on receiving the configuration message.

9. The method according to claim 1, further comprising: receiving a downlink message from the first cell, the downlink message comprising an indication of a change in at least one cell-specific parameter of the first set of cell-specific parameters associated with the first cell or at least one of the one or more parameters common to the set of cells; updating the first system information block associated with the first cell based at least in part on receiving the downlink message; as well as Communicating with the first cell is based at least in part on updating the first system information block.

10. The method according to claim 1, further comprising: receiving a second system information block associated with a second cell in the set of cells of the non-terrestrial network, the second system information block comprising second cell-specific information, the second cell-specific information indicating a second set of cell-specific parameters for communications with the second cell; and The second set of cell-specific parameters associated with the cell-specific information of the first cell and at least a second subset of the one or more parameters common to the set of cells are used to communicate with the second cell.

11. The method according to claim 1 , further comprising: An indication of a neighbor cell list associated with the first cell is received based at least in part on receiving the first system information block from the first cell.

12. The method according to claim 11, further comprising: An indication of a period, a next update time, or both associated with an additional system information block is received based at least in part on receiving the first system information block, wherein the additional system information block is associated with at least one cell in the neighbor cell list.

13. The method according to claim 1, further comprising: identifying that an update to the first set of cell-specific parameters associated with the first cell is available; determining that an expected duration until initiating a cell reselection procedure with the second cell satisfies a threshold; refraining from updating the first set of cell-specific parameters based at least in part on determining that the expected duration satisfies the threshold; and The cell reselection procedure with the second cell is performed based at least in part on determining that the expected duration satisfies the threshold.

14. The method according to claim 13, further comprising: After performing the cell reselection procedure, the update to the first set of cell-specific parameters associated with the first cell is received.

15. The method according to claim 1, further comprising: identifying that an update to the first set of cell-specific parameters associated with the first cell is available; based at least in part on identifying that the updating of the first set of cell-specific parameters for the first cell may be used to avoid performing an attach procedure with the first cell; as well as An attach procedure is performed after receiving the update to the first set of cell-specific parameters associated with the first cell based at least in part on identifying that the update to the first set of cell-specific parameters for the first cell is available.

16. The method according to claim 1, wherein The one or more parameters that are common to the set of cells are used by each cell of the non-terrestrial network associated with a satellite of the non-terrestrial network.

17. The method according to claim 1, wherein The one or more parameters that are common to the set of cells are used by a subset of cells of the non-terrestrial network associated with satellites of the non-terrestrial network.

18. A method for wireless communication at a user equipment (UE), the method comprising: communicating with a first cell of a non-terrestrial network using a set of parameters associated with the first cell; receiving a control message associated with a second cell of the non-terrestrial network, the control message including an indication that the set of parameters associated with the first cell can be used for communicating with the second cell; determining, based at least in part on receiving the indication, that the set of parameters associated with the first cell can be used for communicating with the second cell; as well as Communicating with the second cell of the non-terrestrial network using the set of parameters based at least in part on determining that the set of parameters stored by the UE for the first cell is usable for communicating with the second cell.

19. The method according to claim 18, further comprising: A second indication of a validity period associated with the parameter set is received, wherein determining that the parameter set stored by the UE for the first cell is usable for communicating with the second cell is based at least in part on the validity period.

20. The method of claim 18, further comprising: receiving a second control message associated with a third cell of the non-terrestrial network; as well as Selecting to communicate with the second cell based at least in part on the set of parameters stored by the UE being associated with the second cell and not the third cell, wherein communicating with the second cell is based at least in part on selecting to communicate with the second cell.

21. The method of claim 18, further comprising: Receiving a radio resource control message or a non-access stratum message including one or more sets of system information blocks associated with a set of cells of the non-terrestrial network based at least in part on a predicted path of the UE relative to the non-terrestrial network, wherein the set of cells includes the first cell and the second cell, wherein communicating with the first cell is based at least in part on receiving the radio resource control message or the non-access stratum message.

22. The method according to claim 18, wherein Determining that the parameter set stored by the UE for the first cell can be used for communicating with the second cell includes: The parameter set is determined to remain unchanged during a validity period based at least in part on receiving the indication.

23. The method of claim 18, further comprising: determining that the set of parameters stored by the UE for the first cell is not usable for communicating with a third cell of the non-terrestrial network; receiving one or more system information blocks associated with the third cell based at least in part on determining that the set of parameters stored by the UE for the first cell is unusable for communicating with the third cell; as well as Communicating with the third cell is performed based at least in part on receiving the one or more system information blocks.

24. The method of claim 18, further comprising: receiving one or more system information blocks associated with the first cell, the one or more system information blocks including the set of parameters for communicating with the first cell of the non-terrestrial network, wherein communicating with the first cell is based at least in part on receiving the one or more system information blocks; and It is determined that the first cell belongs to a set of cells based at least in part on a second indication of a set of physical cell identifiers associated with the set of parameters.

25. The method of claim 18, further comprising: A downlink message is received, the downlink message including a neighbor cell list associated with the first cell and one or more parameters associated with at least one cell of the neighbor cell list, wherein communicating with the first cell is based at least in part on receiving the downlink message.

26. The method according to claim 25, further comprising: selecting the second cell as part of an intra-frequency cell reselection procedure or an inter-frequency cell reselection procedure with the second cell, wherein communicating with the second cell is based at least in part on selecting the second cell; and Updating the neighbor cell list associated with the second cell is avoided based at least in part on selecting the second cell as part of the intra-frequency cell reselection procedure or the inter-frequency cell reselection procedure.

27. The method of claim 25, further comprising: selecting the second cell as part of an intra-frequency cell reselection procedure with the second cell, wherein communicating with the second cell is based at least in part on selecting the second cell; and The neighbor cell list associated with the second cell is updated based at least in part on selecting the second cell as part of the intra-frequency cell reselection procedure.

28. The method of claim 25, further comprising: selecting the second cell as part of an inter-frequency cell reselection procedure with the second cell, wherein communicating with the second cell is based at least in part on selecting the second cell; and The neighbor cell list associated with the second cell is updated based at least in part on selecting the second cell as part of the inter-frequency cell reselection procedure.

29. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor to cause the device to perform the following operations: receiving a set of system information blocks common to a set of cells of a non-terrestrial network, the set of system information blocks indicating one or more parameters common to the set of cells for communication with the set of cells; receiving a first system information block associated with a first cell of the set of cells of the non-terrestrial network, the first system information block comprising cell-specific information indicating a first set of cell-specific parameters for communications with the first cell; and Communicating with the first cell is performed using the first set of cell-specific parameters associated with the cell-specific information of the first cell and at least a first subset of the one or more parameters common to the set of cells.

30. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor to cause the device to perform the following operations: communicating with a first cell of a non-terrestrial network using a set of parameters associated with the first cell; receiving a control message associated with a second cell of the non-terrestrial network, the control message including an indication that the set of parameters associated with the first cell can be used for communicating with the second cell; determining, based at least in part on receiving the indication, that the set of parameters associated with the first cell can be used for communicating with the second cell; as well as Communicating with the second cell of the non-terrestrial network using the set of parameters based at least in part on determining that the set of parameters stored by the UE for the first cell is usable for communicating with the second cell.

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