Frequency configuration for control resource set in non-terrestrial networks

Abstract

Methods, systems, and devices for wireless communication are described. A non-terrestrial network (NTN) device (e.g., satellite, base station) can transmit, to a user equipment (UE), a synchronization signal block (SSB) at a first frequency, the synchronization signal block indicating a second frequency of a control resource set (CORESET) relative to the SSB, where the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. The UE can monitor the CORESET for a downlink control channel transmission at the indicated second frequency. The NTN device can transmit, to the UE, the downlink control channel transmission over the CORESET. The NTN device can transmit, to the UE, system information based on the downlink control channel transmission.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 63 / 058,956, filed by Ma et al. on July 30, 2020, entitled “Frequency Configuration for Control Resource Set in Non-Terrestrial Networks,” and U.S. Patent Application No. 17 / 383,741, filed by Ma et al. on July 23, 2021, entitled “Frequency Configuration for Control Resource Set in Non-Terrestrial Networks,” each of which is assigned to the assignee of this application. Technical Field

[0003] The following relates to wireless communications, including frequency configuration of Control Resource Sets (CORESETs) in Non-Terrestrial Networks (NTNs). Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, and the like. 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 such as long term evolution (LTE) systems, advanced 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 techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (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 node simultaneously supporting communication with multiple communication devices, which may also be referred to as user equipment (UE).

[0005] In some examples, a UE may perform a random access procedure to gain access to a network. Contention may occur if multiple UEs attempt to perform random access procedures simultaneously using overlapping frequencies. Summary of the Invention

[0006] The described techniques relate to improved methods, systems, devices, and apparatuses for supporting frequency configuration of control resource sets (CORESETs) in non-terrestrial networks (NTNs). Generally speaking, the described techniques configure a user equipment (UE) with an offset of a CORESET relative to a synchronization signal block (SSB) that is based on the CORESET bandwidth, a combination of first and second parameters associated with the SSB, or both. For example, an NTN device (e.g., a satellite) may transmit an SSB to a UE at a first frequency that indicates a second frequency of the CORESET relative to the SSB, where the second frequency is based on one or more of the following: the CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. The UE may monitor the CORESET on the indicated second frequency for downlink control channel transmissions. The NTN device may transmit downlink control channel transmissions to the UE via the CORESET. The NTN device may transmit system information (SI) to the UE based on the downlink control channel transmissions.

[0007] A method of wireless communication is described. The method may include receiving a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; monitoring the CORESET on the indicated second frequency for a downlink control channel transmission; and receiving SI based on the downlink control channel transmission.

[0008] An apparatus for wireless communication 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 receive a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; monitor the CORESET on the indicated second frequency for a downlink control channel transmission; and receive SI based on the downlink control channel transmission.

[0009] Another apparatus for wireless communication is described. The apparatus may include: means for receiving a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; means for monitoring the CORESET on the indicated second frequency for a downlink control channel transmission; and means for receiving SI based on the downlink control channel transmission.

[0010] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: receive a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; monitor the CORESET on the indicated second frequency for a downlink control channel transmission; and receive SI based on the downlink control channel transmission.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving SSB at a first frequency may include operations, features, components, or instructions for receiving an indication of a frequency offset, wherein the frequency offset may be based on a CORESET bandwidth, and determining a second frequency based on the first frequency and the received frequency offset.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the frequency offset may also be based on an SSB index.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the frequency offset may also be based on a density of users at or within a threshold distance of the UE's geographic location.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of a frequency offset may include operations, features, components, or instructions for receiving a master information block (MIB) of an SSB, wherein the MIB includes an indication of a frequency offset.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication of the frequency offset includes an explicit indication of the frequency offset.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the SSB may be associated with a demodulation reference signal (DMRS) sequence mapped to the second frequency.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the CORESET bandwidth includes a bandwidth of the CORESET.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a second SSB at a first frequency prior to an SSB, wherein the second SSB indicates a third frequency of a second CORESET relative to the second SSB, wherein the CORESET bandwidth includes a bandwidth of the second CORESET.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a frequency offset based on a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, and determining a second frequency based on the first frequency and the frequency offset.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an SSB at a first frequency may include operations, features, components, or instructions for receiving a MIB, wherein a first portion of the SSB includes one or more of: a first field of the MIB, and wherein a second portion of the SSB includes spare bits of the MIB, a second field of the MIB, or a field of a physical broadcast channel (PBCH) transmission that may be outside of the MIB.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first field of the MIB may be associated with a CORESET.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the SSB may be associated with a DMRS sequence mapped to a second parameter.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining that a second parameter may not be present in the SSB and determining the second parameter based on the CORESET bandwidth and the absence of the second parameter in the SSB.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining the frequency offset may include operations, features, components, or instructions for combining a first parameter and a second parameter.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining an initial downlink bandwidth part (BWP) that overlaps in frequency with a CORESET based on received SI and performing a random access procedure on the initial downlink BWP.

[0026] A method of wireless communication is described. The method may include transmitting a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; transmitting a downlink control channel transmission via the CORESET; and transmitting SI based on the downlink control channel transmission.

[0027] An apparatus for wireless communication 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 transmit a SSB at a first frequency, the SSB indicating a second frequency of a core set relative to the SSB, wherein the second frequency is based on one or more of: a core set bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; transmit a downlink control channel transmission via the core set; and transmit signaling information (SI) based on the downlink control channel transmission.

[0028] Another apparatus for wireless communication is described. The apparatus may include: means for transmitting a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; means for transmitting a downlink control channel transmission via the CORESET; and means for transmitting SI based on the downlink control channel transmission.

[0029] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to: transmit a SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; transmit a downlink control channel transmission via the CORESET; and transmit SI based on the downlink control channel transmission.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending SSB at a first frequency may include operations, features, components, or instructions for determining a second frequency based on the first frequency and a frequency offset, where the frequency offset may be based on a CORESET bandwidth, and sending an indication of the frequency offset.

[0031] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a frequency offset based on an SSB index.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a frequency offset based on a density of users at or within a threshold distance of a geographic location of the UE, and transmitting an SSB to the UE.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the indication of the frequency offset may include operations, features, components, or instructions for sending a MIB of an SSB, where the MIB includes the indication of the frequency offset.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication of the frequency offset includes an explicit indication of the frequency offset.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the SSB may be associated with a DMRS sequence mapped to the second frequency.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the CORESET bandwidth includes a bandwidth of the CORESET.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting a second SSB at a first frequency prior to an SSB, wherein the second SSB indicates a third frequency of a second CORESET relative to the second SSB, wherein the CORESET bandwidth comprises a bandwidth of the second CORESET.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a frequency offset based on a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, and determining a second frequency based on the first frequency and the frequency offset.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an SSB at a first frequency may include operations, features, components, or instructions for sending a MIB, wherein a first portion of the SSB includes a first field of the MIB, and wherein a second portion of the SSB includes one or more of: spare bits of the MIB, a second field of the MIB, or a field of a PBCH transmission that may be outside of the MIB.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first field of the MIB may be associated with a CORESET.

[0041] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the SSB may be associated with a DMRS sequence that maps to a value of the second parameter.

[0042] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a value of a second parameter based on the CORESET bandwidth.

[0043] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining the second frequency based on combining the first parameter and the second parameter.

[0044] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining an initial downlink BWP that overlaps with a CORESET in frequency, and performing a random access procedure on the initial downlink BWP based on transmitting system information.

[0045] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: transmitting a second SSB at a third frequency, the second SSB indicating a fourth frequency of the second CORESET relative to the second SSB, wherein the fourth frequency may be based on one or more of: a bandwidth of the second CORESET, a combination of a first parameter associated with a first portion of the second SSB and a second parameter associated with a second portion of the second SSB, or both, wherein the SSB at least partially overlaps in frequency with the second SSB, and wherein the second frequency and the fourth frequency may be configured such that the CORESET and the second CORESET may not overlap in frequency based on the SSB overlapping with the second SSB; transmitting a second downlink control channel transmission via the second CORESET; and transmitting a second SI based on the second downlink control channel transmission.

[0046] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET may not overlap in frequency including the second frequency and the fourth frequency being associated with the same CORESET bandwidth and different SSB indices.

[0047] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET may not overlap in frequency, including that a value of a first parameter of a first portion of an SSB is the same as a value of the first parameter of the first portion of a second SSB, and a value of a second parameter of the second portion of the SSB is different from a value of the second parameter of the second portion of the second SSB.

[0048] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET may not overlap in frequency including the second frequency and the fourth frequency differing by at least a CORESET bandwidth.

[0049] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first frequency and the third frequency comprise the same frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 An example of a wireless communication system supporting frequency configuration of a control resource set (CORESET) in a non-terrestrial network (NTN) in accordance with aspects of the present disclosure is illustrated.

[0051] Figure 2An example of a wireless communication system supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is illustrated.

[0052] Figure 3 An example of a CORESET offset scheme supporting frequency configuration of CORESETs in an NTN according to aspects of the present disclosure is illustrated.

[0053] Figure 4A An example of a beam configuration scheme supporting frequency configuration of CORESETs in an NTN according to aspects of the present disclosure is illustrated.

[0054] Figure 4B An example of a CORESET offset scheme supporting frequency configuration of CORESETs in an NTN according to aspects of the present disclosure is illustrated.

[0055] Figure 5 An example of a process flow supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is illustrated.

[0056] Figure 6 and 7 A block diagram of a device supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is shown.

[0057] Figure 8 A block diagram of a communication manager supporting frequency configuration of a CORESET in an NTN is shown, in accordance with aspects of the present disclosure.

[0058] Figure 9 A diagram illustrating a system including devices supporting frequency configuration of a CORESET in an NTN, according to aspects of the present disclosure.

[0059] Figure 10 and 11 A block diagram of a device supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is shown.

[0060] Figure 12 A block diagram of a communication manager supporting frequency configuration of a CORESET in an NTN is shown, in accordance with aspects of the present disclosure.

[0061] Figure 13 A diagram illustrating a system including devices supporting frequency configuration of a CORESET in an NTN, according to aspects of the present disclosure.

[0062] Figures 14 to 17 A flow chart illustrating a method of supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0063] A non-terrestrial network (NTN) device or other base station can use multiple beams to communicate with multiple user equipment (UEs), and each beam can operate on a frequency interval that does not intersect with at least one other beam (e.g., the beams can have different bandwidth parts (BWPs)). To enable a UE to access the NTN device, the NTN device can send a synchronization signal block (SSB) to the UE. Once the UE decodes the SSB, the UE can determine the location and bandwidth of the initial control resource set (CORESET), which can also be referred to as CORESET#0. The UE can decode the physical downlink control channel (PDCCH) specified by the initial CORESET, determine the resources for receiving the system information block (SIB), and receive the SIB accordingly. The SIB can configure the initial downlink BWP and the initial uplink BWP, which the UE can use to perform random access with the NTN device. The initial downlink BWP can include the frequencies spanned by the corresponding initial CORESET.

[0064] In some examples, SSBs for different beams may be transmitted on a common frequency interval, which may enable a UE to perform an initial cell search more quickly. However, using a common frequency interval may cause the initial CORESETs for each SSB to at least partially overlap in frequency because the initial CORESETs may have values ​​relative to their respective SSBs. As described herein, each initial downlink BWP used to perform a random access procedure may include the frequency of each corresponding initial CORESET. Therefore, if one or more initial CORESETs overlap in frequency, one or more initial downlink BWPs may overlap in frequency. Because multiple UEs may perform random access procedures on different initial downlink BWPs that overlap in frequency, the chance that contention may occur may increase (e.g., transmissions received at or sent from the UE may collide or interfere).

[0065] To mitigate contention that occurs at least in part due to frequency overlap between CORESETs, the NTN equipment and the UE may implement a method that enables the CORESETs to be frequency-disjoint from one another. For example, the UE may use an offset based on the bandwidth of the initial CORESET and an SSB index configured such that CORESETs associated with adjacent beams do not overlap. Additionally or alternatively, the UE may receive a first and a second indicator from the SSB, and the UE may combine the first and the second indicators to determine an offset for the CORESET such that the CORESET does not overlap with the CORESET associated with the adjacent beam. Additionally or alternatively, the UE may receive an offset configured such that the UE's initial CORESET differs from the initial CORESET of the adjacent beam by at least the bandwidth of the initial CORESET of the adjacent beam.

[0066] Aspects of the present disclosure are initially described in the context of wireless communication systems. Additional aspects of the present disclosure are described in the context of core set offset schemes, beam configuration schemes, and process flows. Various aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow charts related to frequency configuration of core sets in an NTN.

[0067] Figure 1 An example of a wireless communication system 100 supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is illustrated. 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, communication with low-cost and low-complexity devices, or any combination thereof.

[0068] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100 and may be devices of different 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 a UE 115 and base station 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographic area over which base stations 105 and UEs 115 may support communication of signals according to one or more radio access technologies.

[0069] The UEs 115 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 Some example UEs 115 are illustrated in FIG. 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.

[0070] The base stations 105 can communicate with the core network 130, or with each other, or both. For example, the base stations 105 can interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 can communicate with each other via the backhaul links 120 (e.g., via X2, Xn, or other interfaces) directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 can be or include one or more wireless links.

[0071] The one or more base stations 105 described herein may include or may be referred to by one of ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga NodeB (any of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0072] In other examples, 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 suitable terminology, where "device" may also be referred to as a unit, a station, a terminal, or a client. In 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, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0073] The UE 115 described herein is capable of communicating with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as base stations 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, such as, among other examples. Figure 1 shown.

[0074] The UE 115 and the base station 105 can wirelessly communicate with each other via one or more communication links 125 over one or more carriers. The term "carrier" can refer to a set of radio 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 spectrum band (e.g., a BWP) operating according to one or more physical layer channels of 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 carrier operation, user data, or other signaling. The wireless communication system 100 can use carrier aggregation or multi-carrier operation to support communication with the UE 115. 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 frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0075] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques 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 be composed of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing (SCS) 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 UE 115 and the higher the order of the modulation scheme, the higher the data rate of UE 115 may be. Wireless communication resources may refer to a combination of radio spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further improve the data rate or data integrity of communications with UE 115.

[0076] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of a basic time unit, which can be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the maximum supported SCS, and Nf The maximum supported Discrete Fourier Transform (DFT) size may be indicated. Time intervals of 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).

[0077] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the SCS. Each time slot may include multiple symbol periods (e.g., depending on the length of a cyclic prefix pre-appended to each symbol period). In some wireless communication systems 100, the time slot may be further divided into multiple mini-slots containing one or more symbols. In addition to 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 SCS or operating frequency band.

[0078] 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 bursts of shortened TTIs (sTTIs)).

[0079] Physical channels can be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels can 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., CORESET) of a physical control channel can be defined by multiple symbol periods and can extend across the system bandwidth of a carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESETs) can be configured for a group of UEs 115. For example, one or more UEs 115 can monitor or search a control region for control information according to one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level of a control channel candidate can refer to multiple control channel resources (e.g., control channel elements (CCEs)) associated with coded information of a control information format having a given payload size. A search space set can 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.

[0080] In some examples, base stations 105 can be mobile, thereby providing 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 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0081] 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 priority 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 here.

[0082] In some examples, UE 115 can also communicate directly with other UEs 115 via device-to-device (D2D) communication links 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 base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of base station 105 or unable to receive transmissions from base station 105. In some examples, a group 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, base station 105 facilitates resource scheduling for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of base station 105.

[0083] 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 (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 (UPF)) that routes packets or interconnections to external networks. The control plane entities 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 via the user plane entities, which may provide IP address allocation and other functions. The user plane entities may be connected to the network operator IP services 150. The network operator IP services 150 may include access to the Internet, intranet(s), IP multimedia subsystems (IMS), or packet-switched streaming services.

[0084] Some network devices, such as base stations 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 across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., base station 105).

[0085] 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 1 decimeter to 1 meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but these waves may be sufficient to penetrate structures for a macrocell to provide service to a UE 115 located indoors. Transmissions using UHF waves may be associated with smaller antennas and a shorter range (e.g., less than 100 kilometers) than transmissions using the lower frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0086] The wireless communication system 100 can utilize both licensed and unlicensed radio 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 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 an unlicensed band can be based on a carrier aggregation configuration together with component carriers operating in a licensed band (e.g., LAA). In other examples, operations in an unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions.

[0087] A base station 105 or a UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input, multiple-output (MIMO) communications, or beamforming. The antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels that 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 a base station 105 may be located at different geographic locations. A base station 105 may have an antenna array having multiple rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming of signals transmitted via the antenna ports.

[0088] 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 shape or steer 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. The adjustments associated with each antenna element 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).

[0089] exist Figure 1 In a wireless communication system 100, a UE 115 can communicate with a base station 105 via an NTN device. The UE 115 can be configured with a CORESET offset relative to an SSB based on a CORESET bandwidth, a combination of first and second parameters associated with the SSB, or both. For example, the NTN device (e.g., a satellite, base station 105) can transmit an SSB to the UE 115 at a first frequency, the SSB indicating a second frequency of the CORESET relative to the SSB, where the second frequency is based on one or more of the following: the CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. The UE 115 can monitor the CORESET on the indicated second frequency for downlink control channel transmissions. The NTN device can transmit downlink control channel transmissions to the UE 115 via the CORESET. The NTN device can transmit system information (SI) to the UE 115 based on the downlink control channel transmissions.

[0090] Figure 2 An example of a wireless communication system 200 that supports frequency configuration of CORESETs in an NTN according to aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. For example, UEs 115-a, 115-b, and 115-c can be as described in reference Figure 1 An example of a UE 115 is described.

[0091] In some examples, the NTN device 205 can be an example of a satellite (e.g., a low earth orbit (LEO) satellite) or a high altitude platform station (HAPS) (e.g., a balloon). The NTN device 205 can use multiple antennas to form multiple beams 210 (e.g., multiple narrow beams). The beams 210 can operate on disjoint frequency intervals (e.g., can have different BWPs), which can provide interference mitigation. To reduce or minimize the occurrence of cell handovers, the beams 210 from the NTN device 205 can be configured as a single cell.

[0092] In some examples, the NTN device 205 can transmit an SSB 215 on one or more beams 210. The UE 115 can receive the SSB and can decode the SSB 215 to obtain a master information block (MIB) indicating the frequency location and bandwidth of the initial CORESET 220 (i.e., CORESET #0) and the initial search space (i.e., search space #0). The frequency location can be relative to the lowest frequency of the SSB 215. The UE 115 can decode a PDCCH transmission determined by (e.g., specified by) the initial CORESET 220 and the initial search space. The PDCCH transmission can allocate resources for a SIB (e.g., a SIB referred to as SIB1) on a physical downlink shared channel (PDSCH). The UE 115 can receive and decode the SIB, which can configure an initial downlink BWP and an initial uplink BWP at the UE 115. The initial downlink BWP can include the initial CORESET 220. If the initial downlink BWP is not configured, the initial downlink BWP may have the same frequency interval as the initial CORESET 220. The UE 115 may perform random access on the initial uplink BWP and the initial downlink BWP.

[0093] The SSBs 215 of the different beams 210 may be transmitted on a common frequency interval, which may enable the UE 115 to perform an initial cell search more quickly. For example, if the common frequency interval is denoted as BWP 1, the beam 210 may be switched from the second frequency interval (i.e., BWP 2) to BWP 1 to transmit the SSBs 215.

[0094] As described herein, the location of the initial CORESET 220 can be equal to the SSB frequency plus an offset. In some examples, the offset can take one or more predefined values. For example, if the SCS of the SSB 215 is 15 kHz, the SCS of the PDCCH is 15 kHz, and the initial CORESET 220 has a bandwidth of 24 resource blocks (RBs), the offset can be equal to 0 RBs, 2 RBs, or 4 RBs. Multiple beams from the NTN device 205 (e.g., satellite, HAPS) can be configured within the same cell. In the case where there is one initial downlink BWP per cell, there may be no overlap between multiple instances of the initial CORESET 220. Thus, offsets that are sufficiently small to allow overlap between CORESETs can be used (e.g., 0 RBs, 2 RBs, 4 RBs). However, in the case where there are multiple initial downlink BWPs per cell, overlap may occur if the offsets are too small. For example, using a common frequency interval may result in overlapping initial downlink BWPs, even if beams 210 have different CORESET#0 configurations in the MIB (e.g., configured in an information element (IE) called controlResourceSetZero). When multiple instances of initial CORESET 220 overlap in frequency, the corresponding initial downlink BWPs may also overlap in frequency. When initial downlink BWPs overlap each other in frequency, contention between UEs 115 may occur more frequently.

[0095] Typically, a beam 210 can serve one or more UEs 115. For example, a beam can cover an area as large as 100 kilometers by 500 kilometers and can serve multiple UEs 115 within the area. However, when UEs 115 perform random access procedures on their respective initial downlink BWPs, having too many UEs 115 on overlapping initial downlink BWPs can lead to increased contention. The methods described herein can make the downlink BWPs disjoint from each other (e.g., non-overlapping in frequency), which can distribute the random access traffic load in a way that reduces contention.

[0096] In one example, NTN device 205 may transmit SSB 215-a to UE 115-a via beam 210-a, transmit SSB 215-b to UE 115-b via beam 210-b, and transmit SSB 215-c to UE 115-c via beam 210-c. SSB 215-a may indicate the frequency location of initial CORESET 220-a, SSB 215-b may indicate the frequency location of initial CORESET 220-b, and SSB 215-c may indicate the frequency location of initial CORESET 220c. For example, SSB 215-a may indicate a frequency offset of 0 RBs relative to SSB 215-a, SSB 215-b may indicate a frequency offset of 2 RBs relative to SSB 215-b, and SSB 215-c may indicate a frequency offset of 4 RBs relative to SSB 215-c. However, each initial CORESET 220 may have a sufficiently large bandwidth such that initial CORESET 220-a overlaps with at least one of initial CORESETs 220-b and 220-c. Thus, the initial downlink BWP associated with initial CORESET 220-a may overlap with the initial downlink BWP associated with one of initial CORESETs 220-b or 220-c. Consequently, when UE 115-a performs a random access procedure on its respective initial downlink BWP, UE 115-a is more likely to experience contention with UEs 115-b and / or 115-c.

[0097] An example configuration of CORESET#0 can be given in the following table:

[0098] Table 1: CORESET#0 configuration when {SSB SCS, PDCCH SCS} = {15kHz, 15kHz}

[0099]

[0100]

[0101] In a first example, to prevent overlap between CORESETs 220 (e.g., CORESET #0) on different beams 210, the NTN device 205 can determine a frequency offset of the initial CORESET 220 relative to the SSB 215 based on the SSB index and the bandwidth of each CORESET 220. In these examples, the UE 115 can determine the frequency of the CORESET 220 by adding the SSB frequency to the frequency offset, which is a function of the SSB index and the bandwidth of the CORESET 220 (e.g., the latter can be referred to as Δf). The SSB indices (e.g., ssb-index) can be numbered consecutively (e.g., 0, 1, 2, ... 7).

[0102] In some examples, the bandwidth of CORESET 220 may be preconfigured or available through another communication network (e.g., LTE). Additionally or alternatively, the bandwidth may depend on the geographic location of UE 115. For example, if UE 115 is located within or at a threshold distance of an urban area (e.g., an area with a high user density and / or population density), the magnitude of the offset may be greater than if UE 115 is located within or at a threshold distance of a rural area (e.g., an area with a low user density and / or population density). If UE 115 receives multiple SSBs 215, UE 115 may perform soft combining when decoding the MIB for the SSBs 215. Additionally or alternatively, the offset may be indicated in the physical broadcast channel (PBCH) payload of the SSBs 215. For example, a spare bit in the MIB may be used to indicate the offset. If the bit is 0, the offset may be equal to the first bandwidth of the initial downlink BWP, and if the bit is 1, the offset may be equal to the second bandwidth (e.g., the second bandwidth of the initial downlink BWP). Alternatively, the PBCH in the SSB 215 (e.g., which may include a MIB) may include additional bits, where each combination of bits indicates the bandwidth of the downlink BWP, and the bandwidth may be assigned to an offset. These bits may be added to the MIB, or may be outside the MIB but still in the PBCH payload (e.g., in physical layer bits). Additionally or alternatively, each demodulation reference signal (DMRS) sequence associated with the SSB 215 may indicate a unique offset value.

[0103] In some examples, the CORESETs 220 of non-adjacent beams 210 may use the same frequency, which may be referred to as frequency spatial reuse. In some such examples, the network (e.g., via the NTN device 205) may signal a parameter N corresponding to the frequency spatial reuse. In some examples, the UE 115 may use the parameter N to calculate or determine the frequency offset Δf. In some examples, the frequency position of the initial CORESET 220 may be determined as the SSB. frequency +α*modulus(SSB index , N)*Δf, where SSB frequency Corresponding to the lowest frequency of SSB 215, α has a value greater than or equal to 1 in absolute value, SSB index corresponds to the SSB index associated with SSB 215, N corresponds to frequency spatial reuse (e.g., N ≥ 1, such as 4), and Δf corresponds to the bandwidth of CORESET#0 and / or the associated initial downlink BWP. Additional details regarding the first example may be described elsewhere herein, for example, with reference to Figure 3 、 4A and 4B description.

[0104] In a second example, UE 115 may determine the frequency of initial CORESET 220 as the frequency of SSB 215 plus an offset that is a function (e.g., a combination) of two or more parameters, each of which is indicated by an indicator (e.g., in SSB 215). For example, a first indicator may be associated with a first portion of SSB 215 (e.g., a first field of SSB 215) and may indicate a first parameter, while a second indicator may be associated with a second portion of SSB 215 (e.g., a second field of SSB 215) and may indicate a second parameter. For example, the first parameter may be a frequency offset derived from an IE (e.g., a controlResourceSetZero IE) in the MIB for SSB 215. If the second indicator is present, it may be carried in a PBCH transmission associated with SSB 215. For example, a spare bit in the MIB may be used to indicate the second parameter. If the bit is 0, the second parameter may be equal to 1, and if the bit is 1, the second parameter may be equal to a number greater than 1. Alternatively, the PBCH associated with the SSB 215 (e.g., which may include a MIB) may include additional bits, where each combination of bits indicates a unique value for the second parameter. These bits may be added to the MIB, or may be outside the MIB but still in the PBCH payload (e.g., in physical layer bits). Additionally or alternatively, each DMRS sequence associated with the SSB 215 may indicate a unique value for the second parameter. Alternatively, if the second indicator is not present, the second parameter may be set as a function of the bandwidth of the initial CORESET 220, where the bandwidth may be indicated by the CORESET#0 configuration (IE controlResourceSetZero) in the MIB for the SSB 215. In some examples, the CORESET#0 position may be calculated as the SSB frequency +first_parameter*second_parameter, where SSB frequency may be the lowest frequency of the SSB 215, first_parameter may be a frequency offset derived from an IE in the MIB (e.g., controlResourceSetZero), and second_parameter may be a non-negative integer indicated by the second indicator. Additional details regarding the second example may be described elsewhere herein, for example, with reference to Figure 3 describe.

[0105] In a third example, the network (eg, NTN device 205) may configure the offset of the initial CORESET 220 based on the bandwidth of the initial CORESET. For example, the frequency occupied by the nth initial CORESET 220 may be spaced by F.n =[f SSB +off n , f SSB +off n +BW n ] indicates that f SSB The lowest frequency that can be SSB 215, off n can be the frequency offset of the nth initial CORESET 220, and BW n It can be the bandwidth of the nth initial CORESET 220. NTN equipment can be off n+1 -off n ≥BW n Configure the frequency offset under the condition of F. Configuring the frequency offset in this way can ensure that F n+1 and F n Non-overlapping (eg, it may be ensured that the possible initial CORESETs 220 do not overlap in frequency). Additional details regarding the third example may be described elsewhere herein, for example, with reference to Figure 3 describe.

[0106] By making the CORESETs frequency-disjoint, the methods described herein can reduce contention when a UE communicating via beam 210 is performing a random access procedure. Reducing contention can improve the efficiency of performing communications.

[0107] Figure 3 An example of a CORESET offset scheme 300 that supports frequency configuration of CORESETs in an NTN according to aspects of the present disclosure is illustrated. In some examples, the CORESET offset scheme 300 can implement aspects of the wireless communication systems 100 and / or 200. For example, the CORESET offset scheme 300 can represent a communication scheme implemented by the NTN device 205 such that CORESETs 220 configured at adjacent beams 210 are offset from each other in a manner that does not overlap in frequency.

[0108] A first UE 115 may receive an SSB 305-a, where the SSB 305-a may indicate the frequency location of an initial CORESET 310-a. A second UE 115 may receive an SSB 305-b, where the SSB 305-b may indicate the frequency location of an initial CORESET 310-b. A third UE 115 may receive an SSB 305-c, where the SSB 305-c may indicate the frequency location of an initial CORESET 310-c.

[0109] According to the first example (for example, as referenced Figure 2), SSBs 305-a, 305-b, and 305-c may indicate respective SSB indices and CORESET bandwidths Δf. In some examples, the CORESET bandwidths Δf indicated by each SSB 305 may be the same, but the SSB indices may be different. Thus, the frequency location of the initial CORESET 310-a may be different from the frequency locations of the initial CORESETs 310-b and 310-c, such that the CORESETs 310-a, 310-b, and 310-c do not overlap in frequency.

[0110] Additionally or alternatively, according to a second example (e.g., as referenced Figure 2 As described above, SSBs 305-a, 305-b, and 305-c may indicate a first indicator corresponding to a first parameter and a second indicator corresponding to a second parameter. In some examples, the value of the first parameter indicated by the first indicator of each SSB 305 may be the same, but the value of the second parameter may be different. Thus, the frequency position of initial CORESET 310-a may be different from the frequency positions of initial CORESETs 310-b and 310-c, such that CORESETs 310-a, 310-b, and 310-c do not overlap in frequency.

[0111] Additionally or alternatively, according to a third example (e.g., as referenced Figure 2 As described), SSB 305-a, 305-b and 305-c may indicate off condition n+1 -off n ≥BW n Thus, the frequency position of the initial CORESET 310-a may be different from the frequency positions of the initial CORESETs 310-b and 310-c so that the CORESETs 310-a, 310-b, and 310-c do not overlap in frequency.

[0112] Figure 4A An example of a beam configuration scheme 400-a supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is illustrated. Figure 4B An example of a CORESET offset scheme 400-b that supports frequency configuration of CORESETs in an NTN is illustrated. In some examples, the beam configuration scheme 400-a and the CORESET offset scheme 400-b can implement aspects of the wireless communication systems 100 and / or 200. For example, the beam configuration scheme 400-a can represent a beam configuration of the NTN device 205, while the CORESET offset scheme 400-b can represent a communication scheme implemented by the NTN device 205 such that CORESETs configured at adjacent beams 210 are offset from each other in a manner that does not overlap in frequency.

[0113] In this example, the NTN device 205 may have eight beams 405 (e.g., 405-a, 405-b, 405-c, 405-d, 405-e, 405-f, 405-g, and 405-h). Beams 405-a and 405-e may operate in a first BWP (i.e., BWP 0); beams 405-b and 405-f may operate in a second BWP (i.e., BWP 1); beams 405-c and 405-g may operate in a third BWP (i.e., BWP 2); and beams 405-d and 405-h may operate in a fourth BWP (i.e., BWP 3).

[0114] Beams 405-a, 405-b, 405-c, 405-d, 405-e, 405-f, 405-g, and 405-h may transmit corresponding SSBs indicating the frequency locations of CORESETs 410-a, 410-b, 410-c, 410-d, 410-e, 410-f, 410-g, and 410-h, respectively. Figure 2 In the method described in the first example, CORESETs 410-a, 410-b, 410-c, and 410-d may each be frequency-disjoint from one another, and CORESETs 410-e, 410-f, 410-g, and 410-h may each be frequency-disjoint from one another (e.g., due to being associated with different SSB indices). However, frequency overlap may occur between CORESETs 410-a and 410-e; 410-b and 410-f; 410-c and 410-g; and 410-d and 410-h (e.g., due to frequency spatial reuse N being equal to 4).

[0115] Figure 5 An example of a process flow 500 for supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is illustrated. In some examples, the process flow 500 can implement aspects of wireless communication systems 100 and / or 200. For example, UE 115-d can be as described in reference Figure 1 The example of UE 115 described, and NTN device 205-a can be as shown in reference Figure 2 An example of an NTN device 205 is described.

[0116] At 505, NTN device 205-a may transmit an SSB at a first frequency that indicates a second frequency of a CORESET relative to the SSB. The second frequency may be based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. UE 115-d. In some examples, receiving the SSB at the first frequency may include UE 115-d receiving an indication of a frequency offset, where the frequency offset is based on the CORESET bandwidth. In some examples, the frequency offset may be based on the SSB index, a user density at or within a threshold distance of a geographic location of UE 115-d, or both. In some examples, receiving the indication of the frequency offset may include receiving a MIB for the SSB, where the MIB includes an indication of the frequency offset. In some such examples, the indication of the frequency offset may include an explicit indication of the frequency offset (e.g., a field in the MIB indicating the frequency offset). In some examples, the SSB may be associated with a DMRS sequence that is mapped to the second frequency or frequency offset. In some examples, the CORESET bandwidth may include the bandwidth of the CORESET.

[0117] In some examples, the NTN device 205-a may transmit, and the UE 115-d may receive, a second SSB at a first frequency prior to the SSB. In some such examples, the second SSB may indicate a third frequency of the second CORESET relative to the second SSB, wherein the CORESET bandwidth includes the bandwidth of the second CORESET. In some examples, the UE 115-d may receive a MIB, wherein a first portion of the SSB includes a first field of the MIB. In some such examples, the second portion of the SSB includes one or more of the following: spare bits of the MIB, a second field of the MIB, or a field of a PBCH transmission outside the MIB. In some such examples, the first field of the MIB is associated with the CORESET. In some examples, the SSB is associated with a DMRS sequence mapped to a second parameter. In some examples, the UE 115-d may determine that the second parameter is not present in the SSB, and may determine the second parameter based on the CORESET bandwidth and the absence of the second parameter in the SSB. In some examples, the UE 115-d determining the frequency offset may include the UE 115-d combining the first parameter and the second parameter. In some such examples, the NTN device 205-a may send, and the UE 115-d may receive, a second downlink control channel transmission via a second CORESET. Additionally, the NTN device 205-a may send, and the UE 115-d may receive, a second SI based on the second downlink control channel transmission.

[0118] In some examples, configuring the second frequency and the fourth frequency so that the CORESET and the second CORESET do not overlap in frequency includes associating the second frequency and the fourth frequency with the same CORESET bandwidth and different SSB indices. In some examples, configuring the second frequency and the fourth frequency so that the CORESET and the second CORESET do not overlap in frequency includes having a value of a first parameter of a first portion of an SSB that is the same as a value of a first parameter of a first portion of a second SSB, and having a value of a second parameter of a second portion of an SSB that is different from a value of a second parameter of a second portion of the second SSB. In some examples, configuring the second frequency and the fourth frequency so that the CORESET and the second CORESET do not overlap in frequency includes having the second frequency and the fourth frequency that are different from at least the CORESET bandwidth. In some examples, the first frequency and the third frequency include the same frequency.

[0119] In some examples, the NTN device 205-a can transmit a second SSB at a third frequency, the second SSB indicating a fourth frequency of the second CORESET relative to the second SSB, where the fourth frequency is based on one or more of: a bandwidth of the second CORESET, a combination of a first parameter associated with a first portion of the second SSB and a second parameter associated with a second portion of the second SSB, or both. In some such examples, the SSB block at least partially overlaps in frequency with the second SSB, and the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET do not overlap in frequency based on the SSB overlapping with the second SSB.

[0120] At 510, UE 115-d may determine a second frequency. In some examples, UE 115-d may determine the second frequency based on the first frequency and the received frequency offset. Additionally or alternatively, UE 115-d may determine the frequency offset based on a combination of the first parameter and the second parameter, and may determine the second frequency based on the first frequency and the frequency offset.

[0121] At 515 , UE 115 - d may monitor the CORESET on the indicated second frequency for downlink control channel transmissions.

[0122] The NTN device 205-a may send a downlink control channel transmission (eg, a PDCCH transmission) via the CORESET at 520. The UE 115-d may receive the downlink control channel transmission.

[0123] At 525 , the NTN device 205 - a may send SI (eg, SIB) based on the downlink control channel transmission.

[0124] In some examples, UE 115-d may determine an initial downlink BWP that overlaps in frequency with the CORESET based on received system information. In some examples, UE 115-d may perform a random access procedure on the initial downlink BWP.

[0125] Figure 6 A block diagram 600 is shown of a device 605 that supports frequency configuration of a CORESET in an NTN according to aspects of the present disclosure. The device 605 can be an example of aspects of the UE 115 as described herein. The device 605 can include a receiver 610, a communication manager 615, and a transmitter 620. The device 605 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0126] 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 the frequency configuration of CORESETs in the NTN, etc.). The information may be passed to other components of the device 605. The receiver 610 may be a reference Figure 9 Examples of various aspects of the transceiver 915 are described. The receiver 610 may utilize a single antenna or a group of antennas.

[0127] The communication manager 615 may receive an SSB at a first frequency that indicates a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; monitor the CORESET on the indicated second frequency for downlink control channel transmissions; and receive SI based on the downlink control channel transmissions. The communication manager 615 may be an example of aspects of the communication manager 910 described herein.

[0128] The communication manager 615 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 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.

[0129] The communication manager 615 or its subcomponents can be physically located in a variety of 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.

[0130] The transmitter 620 can transmit signals generated by other components of the device 605. In some examples, the transmitter 620 can be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 can be a reference Figure 9 Examples of various aspects of the transceiver 915 are described. The transmitter 620 may utilize a single antenna or a group of antennas.

[0131] In some examples, the method performed by device 605 can have one or more advantages. For example, by receiving an SSB indicating an offset based on the CORESET bandwidth or a combination of the first and second parameters, device 605 is less likely to experience contention with another wireless device (e.g., UE 115) when performing a random access procedure. Thus, on average, device 605 can perform a random access procedure faster (e.g., a random access procedure can be associated with less delay or reduced signaling overhead).

[0132] Figure 7 A block diagram 700 is shown of a device 705 that supports frequency configuration of a CORESET in an NTN according to aspects of the present disclosure. The device 705 can be an example of aspects of the device 605 or UE 115 as described herein. The device 705 can include a receiver 710, a communication manager 715, and a transmitter 735. The device 705 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0133] 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 frequency configuration of CORESETs in the NTN, etc.). The information may be passed to other components of the device 705. The receiver 710 may be a reference Figure 9 Examples of various aspects of the transceiver 915 are described. The receiver 710 may utilize a single antenna or a group of antennas.

[0134] 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 SSB receiver 720, a CORESET monitoring component 725, and a SIB receiver 730. The communication manager 715 may be an example of aspects of the communication manager 910 described herein.

[0135] The SSB receiver 720 may receive an SSB at a first frequency that indicates a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both.

[0136] CORESET monitoring component 725 can monitor a CORESET on the indicated second frequency for downlink control channel transmissions.

[0137] The SIB receiver 730 may receive SI based on downlink control channel transmissions.

[0138] The transmitter 735 can transmit signals generated by other components of the device 705. In some examples, the transmitter 735 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 735 can be a reference Figure 9 Examples of various aspects of the transceiver 915 are described. The transmitter 735 can utilize a single antenna or a group of antennas.

[0139] Figure 8 A block diagram 800 is shown of a communication manager 805 that supports frequency configuration of CORESETs in an NTN 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 SSB receiver 810, a CORESET monitoring component 815, a SIB receiver 820, a frequency determination component 825, a parameter determination component 830, a BWP overlap component 835, and a random access procedure component 840. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0140] The SSB receiver 810 may receive an SSB at a first frequency that indicates a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. In some examples, the SSB receiver 810 may receive an indication of a frequency offset, wherein the frequency offset is based on the CORESET bandwidth. In some examples, the frequency offset is further based on the SSB index. In some examples, the frequency offset is further based on a user density at or within a threshold distance of the UE's geographic location.

[0141] In some examples, the SSB receiver 810 may receive a MIB for the SSB, wherein the MIB includes an indication of a frequency offset. In some cases, the indication of the frequency offset includes an explicit indication of the frequency offset. In some examples, the SSB is associated with a DMRS sequence mapped to a second frequency. In some cases, the CORESET bandwidth includes a bandwidth of the CORESET. In some examples, the SSB receiver 810 may receive a second SSB at a first frequency prior to the SSB, wherein the second SSB indicates a third frequency of the second CORESET relative to the second SSB, wherein the CORESET bandwidth includes the bandwidth of the second CORESET.

[0142] In some examples, the SSB receiver 810 can receive a MIB, wherein a first portion of the SSB includes a first field of the MIB, and wherein a second portion of the SSB includes one or more of: spare bits of the MIB, a second field of the MIB, or a field of a PBCH transmission outside of the MIB. In some examples, the first field of the MIB is associated with a CORESET. In some examples, the SSB is associated with a DMRS sequence mapped to a second parameter.

[0143] CORESET monitoring component 815 can monitor a CORESET on the indicated second frequency for downlink control channel transmissions.

[0144] The SIB receiver 820 may receive SI based on downlink control channel transmissions.

[0145] Frequency determination component 825 can determine a second frequency based on the first frequency and the received frequency offset. In some examples, frequency determination component 825 can determine the frequency offset based on a combination of a first parameter associated with the first portion of the SSB and a second parameter associated with the second portion of the SSB. In some examples, frequency determination component 825 can determine the second frequency based on the first frequency and the frequency offset. In some examples, frequency determination component 825 can combine the first parameter and the second parameter.

[0146] Parameter determining component 830 can determine that the second parameter is not present in the SSB.In some examples, parameter determining component 830 can determine the second parameter based on the CORESET bandwidth and the absence of the second parameter in the SSB.

[0147] The BWP overlapping component 835 can determine an initial downlink BWP that overlaps in frequency with the CORESET based on the received system information.

[0148] Random access procedure component 840 can perform a random access procedure on the initial downlink BWP.

[0149] Figure 9 A diagram of a system 900 including a device 905 that supports frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is shown. Device 905 may be an example of or include components of device 605, device 705, or UE 115 as described herein. Device 905 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communications manager 910, a transceiver 915, an antenna 920, a memory 925, and a processor 935. These components may be in electronic communication via or coupled to one or more buses (e.g., bus 940).

[0150] The communication manager 910 may receive an SSB at a first frequency that indicates a second frequency of a CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; monitor the CORESET on the indicated second frequency for downlink control channel transmissions; and receive SI based on the downlink control channel transmissions.

[0151] As described above, the transceiver 915 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, the transceiver 915 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 915 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0152] In some cases, a wireless device may include a single antenna 920. However, in some cases, a device may have more than one antenna 920 that may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0153] The memory 925 may include random access memory (RAM) and read-only memory (ROM). The memory 925 may store computer-readable, computer-executable code 930, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, among other things, the memory 925 may contain a basic IO system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0154] The code 930 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 930 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 930 may not be directly executable by the processor 935, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0155] The processor 935 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, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 935 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 935. The processor 935 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 925) to cause the device 905 to perform various functions (e.g., functions or tasks to support frequency configuration of a CORESET in an NTN).

[0156] In some examples, the method performed by device 905 can have one or more advantages. For example, by receiving an SSB indicating an offset based on the CORESET bandwidth or a combination of the first and second parameters, device 905 is less likely to experience contention with another wireless device (e.g., UE 115) when performing a random access procedure. Thus, on average, device 905 can perform a random access procedure faster (e.g., a random access procedure can be associated with less delay or reduced signaling overhead).

[0157] Figure 10 A block diagram 1000 is shown of a device 1005 that supports frequency configuration of a CORESET in an NTN according to aspects of the present disclosure. The device 1005 can be an example of aspects of the base station 105 and / or the NTN device 205 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).

[0158] 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 the frequency configuration of CORESETs in the NTN, etc.). The information may be passed 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 can utilize a single antenna or a group of antennas.

[0159] The communication manager 1015 may transmit an SSB at a first frequency that indicates a second frequency of the CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; transmit a downlink control channel transmission via the CORESET; and transmit the SI based on the downlink control channel transmission. The communication manager 1015 may be an example of aspects of the communication manager 1310 described herein.

[0160] 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 functionality of the communication manager 1015 or its subcomponents may be performed by a general purpose processor, a DSP, an application specific integrated circuit (ASIC), an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functionality described in this disclosure.

[0161] The communication manager 1015 or its subcomponents can be physically located in a variety of locations, including being distributed such 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 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.

[0162] Transmitter 1020 can transmit signals generated by other components of device 1005. In some examples, transmitter 1020 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1020 can be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1020 can utilize a single antenna or a group of antennas.

[0163] In some examples, the method performed by device 1005 can have one or more advantages. For example, by transmitting an SSB indicating an offset based on a CORESET bandwidth or a combination of the first and second parameters, device 1005 can distribute CORESETs to multiple UEs such that the CORESETs are frequency-disjoint. When the CORESETs are frequency-disjoint, each UE is less likely to experience contention when performing a random access procedure with device 1005. In this way, device 1005 can improve the efficiency of wireless communications by reducing the likelihood that a UE will experience contention, and thus, can provide an improved user experience. In this case, on average, device 1005 can handle a greater number of UEs during a random access procedure than other devices that do not ensure that the CORESETs are frequency-disjoint.

[0164] Figure 11 A block diagram 1100 is shown of a device 1105 that supports frequency configuration of a CORESET in an NTN according to aspects of the present disclosure. The device 1105 can be an example of aspects of the device 1005, base station 105, or NTN device 205 described herein. The device 1105 can include a receiver 1110, a communication manager 1115, and a transmitter 1135. The device 1105 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0165] 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 the frequency configuration of CORESETs in the NTN, etc.). The information may be passed 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.

[0166] 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 SSB transmitter 1120, a downlink control channel transmitter 1125, and an SIB transmitter 1130. The communication manager 1115 may be an example of aspects of the communication manager 1310 as described herein.

[0167] The SSB transmitter 1120 may transmit an SSB at a first frequency that indicates a second frequency of the CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both.

[0168] The SIB transmitter 1130 may transmit SI based on downlink control channel transmission.

[0169] A downlink control channel transmitter 1125 may transmit downlink control channel transmissions via the CORESET.

[0170] 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 can utilize a single antenna or a group of antennas.

[0171] Figure 12 A block diagram 1200 of a communication manager 1205 supporting frequency configuration of CORESETs in an NTN according to aspects of the present disclosure is shown. 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 SSB transmitter 1210, a downlink control channel transmitter 1215, an SIB transmitter 1220, a frequency determination component 1225, a parameter determination component 1230, a BWP overlap component 1235, and a random access procedure component 1240. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0172] The SSB transmitter 1210 may transmit an SSB at a first frequency that indicates a second frequency of the CORESET relative to the SSB, where the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. In some examples, the SSB transmitter 1210 may transmit an indication of a frequency offset. In some examples, the SSB transmitter 1210 may transmit the SSB to the UE.

[0173] In some examples, SSB transmitter 1210 may transmit a MIB for the SSB, wherein the MIB includes an indication of a frequency offset. In some examples, the indication of the frequency offset includes an explicit indication of the frequency offset. In some examples, the SSB is associated with a DMRS sequence mapped to a second frequency. In some cases, the CORESET bandwidth includes a bandwidth of the CORESET. In some examples, SSB transmitter 1210 may transmit a second SSB at a first frequency prior to the SSB, wherein the second SSB indicates a third frequency of the second CORESET relative to the second SSB, wherein the CORESET bandwidth includes a bandwidth of the second CORESET.

[0174] In some examples, the SSB transmitter 1210 may transmit a MIB, wherein a first portion of the SSB includes a first field of the MIB, and wherein a second portion of the SSB includes one or more of the following: spare bits of the MIB, a second field of the MIB, or a field of a PBCH transmission outside the MIB. In some examples, the first field of the MIB is associated with a CORESET. In some examples, the SSB is associated with a DMRS sequence mapped to a value of a second parameter. In some examples, the SSB transmitter 1210 may transmit a second SSB at a third frequency, the second SSB indicating a fourth frequency of the second CORESET relative to the second SSB, wherein the fourth frequency is based on one or more of the following: a bandwidth of the second CORESET, a combination of a first parameter associated with the first portion of the second SSB and a second parameter associated with the second portion of the second SSB, or both, wherein the SSB at least partially overlaps in frequency with the second SSB, and wherein the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET do not overlap in frequency based on the SSB overlapping with the second SSB.

[0175] In some cases, configuring the second frequency and the fourth frequency so that the CORESET and the second CORESET do not overlap in frequency includes associating the second frequency and the fourth frequency with the same CORESET bandwidth and different SSB indices. In some cases, configuring the second frequency and the fourth frequency so that the CORESET and the second CORESET do not overlap in frequency includes having a value of a first parameter of a first portion of an SSB that is the same as a value of a first parameter of a first portion of a second SSB, and having a value of a second parameter of a second portion of an SSB that is different from a value of a second parameter of a second portion of the second SSB. In some cases, configuring the second frequency and the fourth frequency so that the CORESET and the second CORESET do not overlap in frequency includes having the second frequency and the fourth frequency differ by at least the CORESET bandwidth. In some examples, the first frequency and the third frequency can be the same frequency.

[0176] The downlink control channel transmitter 1215 may transmit the downlink control channel transmission via the CORESET. In some examples, the downlink control channel transmitter 1215 may transmit a second downlink control channel transmission via a second CORESET.

[0177] SIB transmitter 1220 may transmit the SI based on the downlink control channel transmission. In some examples, SIB transmitter 1220 may transmit the second SI based on the second downlink control channel transmission.

[0178] Frequency determination component 1225 may determine a second frequency based on the first frequency and a frequency offset, wherein the frequency offset is based on the CORESET bandwidth. In some examples, frequency determination component 1225 may determine the frequency offset based on an SSB index. In some examples, frequency determination component 1225 may determine the frequency offset based on a user density at or within a threshold distance of a geographic location of the UE. In some examples, frequency determination component 1225 may determine the frequency offset based on a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB. In some examples, frequency determination component 1225 may determine the second frequency based on the first frequency and the frequency offset. In some examples, frequency determination component 1225 may determine the second frequency based on a combination of the first parameter and the second parameter.

[0179] Parameter determining component 1230 can determine a value of the second parameter based on the CORESET bandwidth.

[0180] The BWP overlap component 1235 can determine an initial downlink BWP that overlaps in frequency with the CORESET.

[0181] The random access procedure component 1240 can perform a random access procedure on the initial downlink BWP based on the transmitted system information.

[0182] Figure 13 A diagram of a system 1300 including a device 1305 that supports frequency configuration of a CORESET in an NTN, according to aspects of the present disclosure, is shown. Device 1305 may be an example of, or include components of, device 1005, device 1105, base station 105, or NTN device 205 described herein. Device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communications manager 1310, a network communications manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communications manager 1345. These components may be in electronic communication or coupled to one or more buses (e.g., bus 1350).

[0183] The communication manager 1310 may transmit an SSB at a first frequency that indicates a second frequency of the CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; transmit a downlink control channel transmission through the CORESET; and transmit the SI based on the downlink control channel transmission.

[0184] 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 such as one or more UEs 115.

[0185] As described above, transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, transceiver 1320 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1320 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0186] In some cases, a wireless device may include a single antenna 1325. However, in some cases, a device may have more than one antenna 1325 that may be capable of simultaneously sending or receiving multiple wireless transmissions.

[0187] Memory 1330 may include RAM and ROM. Memory 1330 may store computer-readable, computer-executable code 1335, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, among other things, memory 1330 may contain BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0188] 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, such as system memory or other types of memory. In some cases, the code 1335 may not be directly executable by the processor 1340, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0189] 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, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1340 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks to support frequency configuration of a CORESET in an NTN).

[0190] The inter-site communication manager 1345 can manage communications with other base stations 105 and can include a controller or scheduler for cooperating with other base stations 105 to control communications with the UE 115. For example, the inter-site communication manager 1345 can coordinate the scheduling of transmissions to the UE 115 for 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.

[0191] In some examples, the method performed by device 1305 can have one or more advantages. For example, by transmitting an SSB indicating an offset based on a CORESET bandwidth or a combination of the first and second parameters, device 1305 can distribute CORESETs to multiple UEs such that the CORESETs are frequency-disjoint. When the CORESETs are frequency-disjoint, UEs are less likely to experience contention when performing a random access procedure with device 1305. In this way, device 1305 can improve the efficiency of wireless communications by reducing the likelihood that a UE will experience contention, and thus, can provide an improved user experience. In this case, on average, during a random access procedure, device 1305 can handle a greater number of UEs than other devices that do not ensure that the CORESETs are frequency-disjoint.

[0192] Figure 14 1 is a flow chart illustrating a method 1400 for supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure. The operations of the method 1400 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1400 may be implemented by a UE 115 or a component thereof as described herein. Figures 6 to 9 The described communication manager performs the operations of method 1400. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0193] At 1405, the UE may receive an SSB at a first frequency that indicates a second frequency of the CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. The operations of 1405 may be performed according to methods described herein. In some examples, the reference Figures 6 to 9 The SSB receiver is described to perform various aspects of the operation of 1405.

[0194] At 1410, the UE may monitor the CORESET on the indicated second frequency for downlink control channel transmission. The operations of 1410 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The CORESET monitoring components are described to perform various aspects of the operation of 1410.

[0195] At 1415, the UE may receive SI based on the downlink control channel transmission. The operation of 1415 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The SIB receiver is described to perform various aspects of the operation of 1415.

[0196] Figure 15 1 is a flowchart illustrating a method 1500 for supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1500 may be implemented by a UE 115 or a component thereof as described herein. Figures 6 to 9 The described communication manager performs the operations of method 1500. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0197] At 1505, the UE may receive an SSB at a first frequency, the SSB including an indication of a frequency offset, wherein the frequency offset is based on a CORESET bandwidth. The operation of 1505 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The SSB receiver is described to perform various aspects of the operation of 1505.

[0198] At 1510, the UE may determine a second frequency relative to the SSB based on the first frequency and the received frequency offset. The operations of 1510 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The frequency determination components are described to perform aspects of the operations of 1510.

[0199] At 1515, the UE may monitor the CORESET on the indicated second frequency for downlink control channel transmission. The operations of 1515 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The CORESET monitoring components are described to perform various aspects of 1515's operation.

[0200] At 1520, the UE may receive SI based on the downlink control channel transmission. The operations of 1520 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The SIB receiver is described to perform various aspects of the operation of 1520.

[0201] Figure 16 16. A flow chart illustrating a method 1600 for supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or a component thereof as described herein. For example, the method 1600 may be implemented by a UE 115 or a component thereof as described herein. Figures 6 to 9 The described communication manager performs the operations of method 1600. In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0202] At 1605, the UE may receive an SSB at a first frequency. The operations of 1605 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The SSB receiver is described to perform various aspects of the operation of 1605.

[0203] At 1610, the UE may determine a frequency offset based on a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB. The operations of 1610 may be performed according to the methods described herein. In some examples, the frequency offset may be determined by reference to Figures 6 to 9 The frequency determination components are described to perform various aspects of the operation of 1610.

[0204] At 1615, the UE may determine a second frequency based on the first frequency and the frequency offset. The operation of 1615 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The frequency determination component is described to perform various aspects of the operation of 1615.

[0205] At 1620, the UE may monitor the CORESET on the indicated second frequency for downlink control channel transmission. The operations of 1620 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The CORESET monitoring components are described to perform various aspects of 1620's operation.

[0206] At 1625, the UE may receive SI based on the downlink control channel transmission. The operation of 1625 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The SIB receiver is described to perform various aspects of the operation of 1625.

[0207] Figure 17A flow chart illustrating a method 1700 for supporting frequency configuration of a CORESET in an NTN according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a base station 105, an NTN device, or components thereof, as described herein. For example, the method 1700 may be implemented by reference to Figures 10 to 13 The described communication manager may be used to perform the operations of method 1700. In some examples, the base station or NTN device may execute a set of instructions to control functional elements of the base station or NTN device to perform the described functions. Additionally or alternatively, the base station or NTN device may use dedicated hardware to perform various aspects of the described functions.

[0208] At 1705, a base station or NTN device may transmit an SSB at a first frequency that indicates a second frequency of the CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. The operations of 1705 may be performed according to methods described herein. In some examples, the SSB may be transmitted by a CORESET at a first frequency that indicates a second frequency of the CORESET relative to the SSB, wherein the second frequency is based on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both. Figures 10 to 13 The SSB transmitter is described to perform various aspects of the operation of 1705.

[0209] At 1710, a base station or NTN device may send a downlink control channel transmission via a CORESET. The operations of 1710 may be performed according to the methods described herein. In some examples, the reference Figures 10 to 13 A downlink control channel transmitter is described to perform various aspects of the operations of 1710.

[0210] At 1715, the base station or NTN device may send SI based on the downlink control channel transmission. The operation of 1715 may be performed according to the method described herein. In some examples, the reference Figures 10 to 13 The SIB transmitter is described to perform various aspects of the operation of 1715.

[0211] The following provides an overview of various aspects of the disclosure:

[0212] Aspect 1: A method for wireless communication, comprising: receiving an SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based at least in part on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; monitoring the CORESET on the indicated second frequency for a downlink control channel transmission; and receiving SI based at least in part on the downlink control channel transmission.

[0213] Aspect 2: The method of aspect 1, wherein receiving the SSB at the first frequency comprises: receiving an indication of a frequency offset, wherein the frequency offset is based at least in part on a CORESET bandwidth; and determining the second frequency based at least in part on the first frequency and the received frequency offset.

[0214] Aspect 3: The method of aspect 2, wherein the frequency offset is further based at least in part on an SSB index.

[0215] Aspect 4: The method according to any one of aspects 2 to 3, wherein the frequency offset is further based at least in part on a user density at or within a threshold distance of the geographic location of the UE.

[0216] Aspect 5: The method according to any one of aspects 2 to 4, wherein receiving the indication of the frequency offset comprises: receiving a MIB of the SSB, wherein the MIB includes the indication of the frequency offset.

[0217] Aspect 6: The method according to aspect 5, wherein the indication of the frequency offset comprises an explicit indication of the frequency offset.

[0218] Aspect 7: The method according to any one of aspects 2 to 6, wherein the SSB is associated with a DMRS sequence mapped to the second frequency.

[0219] Aspect 8: The method according to any one of aspects 2 to 7, wherein the CORESET bandwidth comprises the bandwidth of the CORESET.

[0220] Aspect 9: The method according to any one of aspects 2 to 8 further includes: receiving a second SSB at the first frequency before the SSB, wherein the second SSB indicates a third frequency of the second CORESET relative to the second SSB, wherein the CORESET bandwidth includes the bandwidth of the second CORESET.

[0221] Aspect 10: The method according to any one of Aspects 1 to 9 further includes: determining a frequency offset based at least in part on a combination of a first parameter associated with the first part of the SSB and a second parameter associated with the second part of the SSB; and determining the second frequency based at least in part on the first frequency and the frequency offset.

[0222] Aspect 11: A method according to Aspect 10, wherein receiving the SSB at a first frequency includes: receiving a MIB, wherein a first part of the SSB includes a first field of the MIB, and wherein a second part of the SSB includes one or more of the following: spare bits of the MIB, a second field of the MIB, or a field of a PBCH transmission outside the MIB.

[0223] Aspect 12: The method according to Aspect 11, wherein the first field of the MIB is associated with the CORESET.

[0224] Aspect 13: The method according to any one of aspects 10 to 12, wherein the SSB is associated with a DMRS sequence mapped to the second parameter.

[0225] Aspect 14: The method of any one of aspects 10 to 13, further comprising: determining that the second parameter is not present in the SSB; and determining the second parameter based at least in part on the CORESET bandwidth and the absence of the second parameter in the SSB.

[0226] Aspect 15: The method according to any one of aspects 10 to 14, wherein determining the frequency offset comprises combining the first parameter and the second parameter.

[0227] Aspect 16: The method according to any one of aspects 1 to 15, further comprising: determining an initial downlink BWP that overlaps with the CORESET in frequency based at least in part on the received system information; and performing a random access procedure on the initial downlink BWP.

[0228] Aspect 17: A method for wireless communication, comprising: transmitting an SSB at a first frequency, the SSB indicating a second frequency of a CORESET relative to the SSB, wherein the second frequency is based at least in part on one or more of: a CORESET bandwidth, a combination of a first parameter associated with a first portion of the SSB and a second parameter associated with a second portion of the SSB, or both; transmitting a downlink control channel transmission via the CORESET; and transmitting SI based at least in part on the downlink control channel transmission.

[0229] Aspect 18: The method of aspect 17, wherein transmitting the SSB at the first frequency comprises: determining a second frequency based at least in part on the first frequency and a frequency offset, wherein the frequency offset is based at least in part on a CORESET bandwidth; and transmitting an indication of the frequency offset.

[0230] Aspect 19: The method of aspect 18, further comprising determining a frequency offset based at least in part on an SSB index.

[0231] Aspect 20: The method according to any one of aspects 18 to 19 further includes: determining the frequency offset based at least in part on the density of users at or within a threshold distance of the geographic location of the UE; and sending the SSB to the UE.

[0232] Aspect 21: The method according to any one of aspects 18 to 20, wherein sending the indication of the frequency offset comprises: sending a MIB of the SSB, wherein the MIB includes the indication of the frequency offset.

[0233] Aspect 22: The method according to aspect 21, wherein the indication of the frequency offset comprises an explicit indication of the frequency offset.

[0234] Aspect 23: The method according to any one of aspects 18 to 22, wherein the SSB is associated with a DMRS sequence mapped to the second frequency.

[0235] Aspect 24: The method according to any one of aspects 18 to 23, wherein the CORESET bandwidth comprises the bandwidth of the CORESET.

[0236] Aspect 25: The method according to any one of aspects 18 to 24 further includes: sending a second SSB at the first frequency before the SSB, wherein the second SSB indicates a third frequency of the second CORESET relative to the second SSB, wherein the CORESET bandwidth includes the bandwidth of the second CORESET.

[0237] Aspect 26: The method according to any one of Aspects 17 to 25 further includes: determining a frequency offset based at least in part on a combination of a first parameter associated with the first part of the SSB and a second parameter associated with the second part of the SSB; and determining the second frequency based at least in part on the first frequency and the frequency offset.

[0238] Aspect 27: A method according to Aspect 26, wherein sending the SSB at a first frequency includes: sending a MIB, wherein the first part of the SSB includes a first field of the MIB, and wherein the second part of the SSB includes one or more of the following: spare bits of the MIB, a second field of the MIB, or a field of a PBCH transmission outside the MIB.

[0239] Aspect 28: The method according to Aspect 27, wherein the first field of the MIB is associated with the CORESET.

[0240] Aspect 29: The method according to any one of aspects 27 to 28, wherein the SSB is associated with a DMRS sequence mapped to a value of the second parameter.

[0241] Aspect 30: The method according to any one of aspects 27 to 29, further comprising: determining a value of the second parameter based at least in part on the CORESET bandwidth.

[0242] Aspect 31: The method of any one of aspects 27 to 30, further comprising: determining the second frequency based at least in part on combining the first parameter and the second parameter.

[0243] Aspect 32: The method according to any one of aspects 17 to 31, further comprising: determining an initial downlink BWP that overlaps with the CORESET in frequency; and performing a random access procedure on the initial downlink BWP based at least in part on the transmitted system information.

[0244] Aspect 33: The method according to any one of aspects 17 to 32 further includes: sending a second SSB at a third frequency, the second SSB indicating a fourth frequency of the second CORESET relative to the second SSB, wherein the fourth frequency is based at least in part on one or more of: a bandwidth of the second CORESET, a combination of a first parameter associated with a first portion of the second SSB and a second parameter associated with a second portion of the second SSB, or both, wherein the SSB at least partially overlaps with the second SSB in frequency, and wherein the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET do not overlap in frequency based at least in part on the SSB overlapping with the second SSB; sending a second downlink control channel transmission through the second CORESET; and sending a second SI based at least in part on the second downlink control channel transmission.

[0245] Aspect 34: The method of aspect 33, wherein the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET do not overlap in frequency, including the second frequency and the fourth frequency being associated with the same CORESET bandwidth and different SSB indices.

[0246] Aspect 35: A method according to any one of Aspects 33 to 34, wherein the second frequency and the fourth frequency are configured so that the CORESET and the second CORESET do not overlap in frequency, the value of the first parameter of the first part of the SSB is the same as the value of the first parameter of the first part of the second SSB, and the value of the second parameter of the second part of the SSB is different from the value of the second parameter of the second part of the second SSB.

[0247] Aspect 36: The method of any one of aspects 33 to 35, wherein the second frequency and the fourth frequency are configured such that the CORESET and the second CORESET do not overlap in frequency, comprising the second frequency and the fourth frequency differing by at least a CORESET bandwidth.

[0248] Aspect 37: The method of any one of aspects 33 to 36, wherein the first frequency and the third frequency comprise the same frequency.

[0249] Aspect 38: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 1 to 16.

[0250] Aspect 39: An apparatus for wireless communication, comprising at least one component for performing the method of any one of aspects 1 to 16.

[0251] Aspect 40: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 16.

[0252] Aspect 41: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 17 to 37.

[0253] Aspect 42: An apparatus for wireless communication, comprising at least one means for performing the method of any one of aspects 17 to 37.

[0254] Aspect 43: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of any one of aspects 17 to 37.

[0255] 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 that other implementations are possible. Furthermore, aspects of two or more methods may be combined.

[0256] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and the terminology of LTE, LTE-A, LTE-A Pro, or NR 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.

[0257] 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 referred to throughout the specification may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0258] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with 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 alternatively, 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).

[0259] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored or transmitted as one or more instructions or code on a computer-readable medium. 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 any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented in different physical locations.

[0260] Computer-readable media include non-transitory computer storage media and communication media, including any media that facilitates the transfer of computer programs from one place to another. Non-transitory storage media can be any available media that can be accessed by a general-purpose or special-purpose computer. As an example and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, or any other non-transitory media that can be used to carry or store desired program code means in the form of instructions or data structures and can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. In addition, any connection is properly referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves are used to transmit software from a website, server or other remote source, the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of computer-readable media. Disk and disc, as used herein, includes CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where 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.

[0261] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items preceded by phrases such as "at least one" or "one or more") means 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 construed to refer to a closed set of conditions. For example, an example step described as "based on condition A" can be based on 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."

[0262] In the 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 that distinguishes the similar components. If only the first reference number is used in the specification, the description applies to any similar component having the same first reference number, regardless of the second reference number or any subsequent reference numbers.

[0263] The description set forth herein, in conjunction with the accompanying drawings, describes example configurations and does not represent all possible examples that may 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 "superior to other examples." The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, these technologies can be implemented without these specific details. In some cases, known structures and devices are illustrated in block diagram form to avoid obscuring the concepts of the described examples.

[0264] The description provided herein is intended to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general 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 rather conforms to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication, comprising: processor, a memory coupled to the processor, and Instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a synchronization signal block at a first frequency, the synchronization signal block indicating a second frequency of a control resource set relative to the synchronization signal block, wherein the second frequency is based at least in part on a combination of a first parameter associated with a first portion of the synchronization signal block and a second parameter associated with a second portion of the synchronization signal block, wherein the first parameter is a frequency offset derived from an information element (IE) in a master information block of the synchronization signal block, and wherein the second parameter is equal to 1 if a spare bit in the master information block is 0 and is equal to a number greater than 1 if the spare bit is 1, and wherein the second frequency is calculated as the first frequency plus the first parameter multiplied by the second parameter; monitoring the set of control resources on the indicated second frequency for downlink control channel transmission; and System information is received based at least in part on the downlink control channel transmission.

2. The apparatus of claim 1 , wherein the instructions are executable by the processor to cause the apparatus to further: receiving an indication of a second frequency offset, wherein the second frequency offset is based at least in part on a control resource set bandwidth; and The second frequency is determined based at least in part on the first frequency and the received second frequency offset.

3. The device according to claim 2, wherein The second frequency offset is further based at least in part on a synchronization signal block index.

4. The device according to claim 2, wherein The second frequency offset is further based at least in part on a density of users at or within a threshold distance of a geographic location of a user equipment (UE).

5. The device according to claim 2, wherein The instructions for receiving the indication of the second frequency offset are executable by the processor to cause the apparatus to: The master information block of the synchronization signal block is received, wherein the master information block includes the indication of the second frequency offset.

6. The device according to claim 5, wherein The indication of the second frequency offset comprises an explicit indication of the second frequency offset.

7. The device according to claim 2, wherein The synchronization signal block is associated with a demodulation reference signal sequence mapped to the second frequency.

8. The device according to claim 2, wherein The control resource set bandwidth includes the bandwidth of the control resource set.

9. The device according to claim 2, wherein The instructions are further executable by the processor to cause the apparatus to: A second synchronization signal block is received at the first frequency before the synchronization signal block, wherein the second synchronization signal block indicates a third frequency of a second control resource set relative to the second synchronization signal block, wherein the control resource set bandwidth includes a bandwidth of the second control resource set.

10. The device according to claim 1, wherein The instructions for receiving the synchronization signal block at the first frequency are executable by the processor to cause the apparatus to: Receive the master information block, wherein the first part of the synchronization signal block includes the first field of the master information block, and wherein the second part of the synchronization signal block includes one or more of the following: the spare bits of the master information block, the second field of the master information block, or a field transmitted by a physical broadcast channel outside the master information block.

11. The device according to claim 10, wherein The first field of the master information block is associated with the control resource set.

12. The device according to claim 1, wherein The synchronization signal block is associated with a demodulation reference signal sequence mapped to the second parameter.

13. The device of claim 1 , wherein the instructions are further executable by the processor to cause the device to: determining that the second parameter does not exist in the synchronization signal block; and The second parameter is determined based at least in part on a control resource set bandwidth and an absence of the second parameter in the synchronization signal block.

14. The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: determining, based at least in part on receiving the system information, an initial downlink bandwidth portion that overlaps in frequency with the set of control resources; and A random access procedure is performed on the initial downlink bandwidth portion.

15. An apparatus for wireless communication, comprising: processor, a memory coupled to the processor, and Instructions stored in the memory and executable by the processor to cause the apparatus to: transmitting a synchronization signal block at a first frequency, the synchronization signal block indicating a second frequency of a control resource set relative to the synchronization signal block, wherein the second frequency is based at least in part on a combination of a first parameter associated with a first portion of the synchronization signal block and a second parameter associated with a second portion of the synchronization signal block, wherein the first parameter is a frequency offset derived from an information element (IE) in a master information block of the synchronization signal block, and wherein the second parameter is equal to 1 if a spare bit in the master information block is 0 and is equal to a number greater than 1 if the spare bit is 1, and wherein the second frequency is calculated as the first frequency plus the first parameter multiplied by the second parameter; sending a downlink control channel transmission over the set of control resources; and System information is sent based at least in part on the downlink control channel transmission.

16. The device of claim 15, wherein the instructions are executable by the processor to cause the device to: determining the second frequency based at least in part on the first frequency and a second frequency offset, wherein the second frequency offset is based at least in part on a control resource set bandwidth; and Sending an indication of the second frequency offset.

17. The device of claim 16, wherein the instructions are further executable by the processor to cause the device to: The second frequency offset is determined based at least in part on a synchronization signal block index.

18. The device of claim 16, wherein the instructions are further executable by the processor to cause the device to: determining the second frequency offset based at least in part on a density of users at or within a threshold distance of a geographic location of a user equipment (UE); and Sending the synchronization signal block to the UE.

19. The device according to claim 16, wherein The instructions to send the indication of the frequency offset are executable by the processor to cause the apparatus to: The master information block of the synchronization signal block is sent, wherein the master information block includes the indication of the second frequency offset.

20. The apparatus according to claim 16, wherein The synchronization signal block is associated with a demodulation reference signal sequence mapped to the second frequency.

21. The apparatus according to claim 16, wherein The control resource set bandwidth includes the bandwidth of the control resource set.

22. The device of claim 16, wherein the instructions are further executable by the processor to cause the device to: Prior to the synchronization signal block, a second synchronization signal block is sent at the first frequency, wherein the second synchronization signal block indicates a third frequency of a second control resource set relative to the second synchronization signal block, wherein the control resource set bandwidth includes the bandwidth of the second control resource set.

23. The device of claim 15, wherein the instructions are further executable by the processor to cause the device to: determining an initial downlink bandwidth portion that overlaps in frequency with the set of control resources; and A random access procedure is performed on the initial downlink bandwidth portion based at least in part on transmitting the system information.

24. The device of claim 15, wherein the instructions are further executable by the processor to cause the device to: A second synchronization signal block is sent at a third frequency, wherein the second synchronization signal block indicates a fourth frequency of a second control resource set relative to the second synchronization signal block, the fourth frequency being based at least in part on one or more of: a bandwidth of the second set of control resources, a combination of a first parameter associated with a first portion of the second synchronization signal block and a second parameter associated with a second portion of the second synchronization signal block, or both, wherein the synchronization signal block at least partially overlaps in frequency with the second synchronization signal block, and wherein the second frequency and the fourth frequency are configured such that the control resource set and the second set of control resources do not overlap in frequency based at least in part on the synchronization signal block overlapping with the second synchronization signal block; sending a second downlink control channel transmission on the second set of control resources; and Second system information is sent based at least in part on the second downlink control channel transmission.

25. The apparatus according to claim 24, wherein The second frequency and the fourth frequency are configured so that the control resource set and the second control resource set do not overlap in frequency, including: the second frequency and the fourth frequency are associated with the same control resource set bandwidth and different synchronization signal block indices.

26. A method for wireless communication, comprising: receiving a synchronization signal block at a first frequency, the synchronization signal block indicating a second frequency of a control resource set relative to the synchronization signal block, wherein the second frequency is based at least in part on a combination of a first parameter associated with a first portion of the synchronization signal block and a second parameter associated with a second portion of the synchronization signal block, wherein the first parameter is a frequency offset derived from an information element (IE) in a master information block of the synchronization signal block, and wherein the second parameter is equal to 1 if a spare bit in the master information block is 0 and is equal to a number greater than 1 if the spare bit is 1, and wherein the second frequency is calculated as the first frequency plus the first parameter multiplied by the second parameter; monitoring the set of control resources on the indicated second frequency for downlink control channel transmission; and System information is received based at least in part on the downlink control channel transmission.

27. A method for wireless communication, comprising: transmitting a synchronization signal block at a first frequency, the synchronization signal block indicating a second frequency of a control resource set relative to the synchronization signal block, wherein the second frequency is based at least in part on a combination of a first parameter associated with a first portion of the synchronization signal block and a second parameter associated with a second portion of the synchronization signal block, wherein the first parameter is a frequency offset derived from an information element (IE) in a master information block of the synchronization signal block, and wherein the second parameter is equal to 1 if a spare bit in the master information block is 0 and is equal to a number greater than 1 if the spare bit is 1, and wherein the second frequency is calculated as the first frequency plus the first parameter multiplied by the second parameter; sending a downlink control channel transmission on the set of control resources; and System information is sent based at least in part on the downlink control channel transmission.

28. An apparatus for wireless communication, the apparatus comprising means for performing the method of claim 26.

29. An apparatus for wireless communication, the apparatus comprising means for performing the method of claim 27.

30. A non-transitory storage medium comprising computer-readable instructions that, when executed by a processor, cause the processor to perform the method of claim 26.

31. A non-transitory storage medium comprising computer-readable instructions that, when executed by a processor, cause the processor to perform the method of claim 27.

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