公开(公告)号：US20240340911A1

公开(公告)日：2024-10-10

申请号：US18748041

申请日：2024-06-19

Applicant: Apple Inc.

Inventor： Shahram Talakoub ,  Sebastian B. Seeber

IPC: H04W72/23 ,  H04W4/90 ,  H04W72/1273 ,  H04W72/566 ,  H04W84/06 ,  H04W88/16

CPC classification number: H04W72/23 ,  H04W4/90 ,  H04W72/1273 ,  H04W72/566 ,  H04W88/16 ,  H04W84/06

Abstract: A communications system may include user equipment (UE) devices, communications satellites, gateways, and a terrestrial network. The UE devices may receive broadcast signals from the constellation. The UE devices may transmit registration requests to the gateways via the satellites in response to the broadcast signals. The registration requests may include information identifying the geographic locations of the UE devices and may include two-line element (TLE) identifiers. A scheduler on the terrestrial network may receive forward link traffic requests for the UE devices, each with a corresponding priority. The scheduler may also receive satellite information that includes thermal constraints, position information, and power information associated with the satellites. The scheduler may generate forward link traffic grants for the UE devices based on the forward link traffic requests, the thermal constraints, the TLE versions, the geographic locations, and the priorities.

公开(公告)号：US12081311B1

公开(公告)日：2024-09-03

申请号：US17483665

申请日：2021-09-23

Applicant: Apple Inc.

Inventor： Shahram Talakoub ,  Sebastian B. Seeber

IPC: H04B7/185 ,  H04W4/029 ,  H04W72/23 ,  H04W72/566 ,  H04W84/06

CPC classification number: H04B7/18513 ,  H04W4/029 ,  H04W72/23 ,  H04W72/569 ,  H04W84/06

Abstract: A communications system may include user equipment (UE) devices, communications satellites, gateways, and a terrestrial network. The UE devices may receive broadcast signals from the constellation. The UE devices may transmit registration requests to the gateways via the satellites in response to the broadcast signals. The registration requests may include information identifying the geographic locations of the UE devices and may include two-line element (TLE) identifiers. A scheduler on the terrestrial network may receive forward link traffic requests for the UE devices, each with a corresponding priority. The scheduler may also receive satellite information that includes thermal constraints, position information, and power information associated with the satellites. The scheduler may generate forward link traffic grants for the UE devices based on the forward link traffic requests, the thermal constraints, the TLE versions, the geographic locations, and the priorities.

公开(公告)号：US12047965B1

公开(公告)日：2024-07-23

申请号：US17483669

申请日：2021-09-23

Applicant: Apple Inc.

Inventor： Shahram Talakoub ,  Sebastian B. Seeber

IPC: H04W72/23 ,  H04W4/90 ,  H04W72/1273 ,  H04W72/566 ,  H04W88/16 ,  H04W84/06

CPC classification number: H04W72/23 ,  H04W4/90 ,  H04W72/1273 ,  H04W72/566 ,  H04W88/16 ,  H04W84/06

Abstract: A communications system may include user equipment (UE) devices, communications satellites, gateways, and a terrestrial network. The UE devices may receive broadcast signals from the constellation. The UE devices may transmit registration requests to the gateways via the satellites in response to the broadcast signals. The registration requests may include information identifying the geographic locations of the UE devices and may include two-line element (TLE) identifiers. A scheduler on the terrestrial network may receive forward link traffic requests for the UE devices, each with a corresponding priority. The scheduler may also receive satellite information that includes thermal constraints, position information, and power information associated with the satellites. The scheduler may generate forward link traffic grants for the UE devices based on the forward link traffic requests, the thermal constraints, the TLE versions, the geographic locations, and the priorities.

公开(公告)号：US12231220B1

公开(公告)日：2025-02-18

申请号：US17483460

申请日：2021-09-23

Applicant: Apple Inc.

Inventor： Matthew N. Ettus ,  Shahram Talakoub ,  Ian Buckley ,  Sebastian B. Seeber

IPC: H04B7/185 ,  H04W56/00 ,  H04W72/04 ,  H04W72/0446

Abstract: A communications system may include a satellite and user equipment (UE) devices. When the UE devices have uplink (UL) packets to transmit, each UE device may randomly select a time slot within a finite time window associated with a time reference of the satellite. The UE device may identify a path length between itself and the satellite and may generate a timing advance based on the path length, the time reference, and the time slot. The satellite may begin to receive the UL packets within the time window and may search received signals over the time window to identify the UL packets. The satellite may recover data payloads from the identified UL packets and may pass the recovered data payloads up a protocol stack. By limiting the search to the time window, the satellite may correctly distinguish the UL packets while using a minimal amount of processing resources.

公开(公告)号：US20240146399A1

公开(公告)日：2024-05-02

申请号：US17948065

申请日：2022-09-19

Applicant: Apple Inc.

Inventor： Sudeep Bhattarai ,  Lohit Sarna ,  Nishant Pattanaik ,  Seshu Tummala ,  Saurabh Deo ,  Sebastian B. Seeber ,  Venkateswara Rao Manepalli ,  Sudhir K. Baghel ,  Mehran T. Baghaei ,  Shahram Talakoub

IPC: H04B7/185 ,  H04B7/195

CPC classification number: H04B7/18513 ,  H04B7/195

Abstract: A communications system may include user equipment (UE) device, satellites, and a gateway. The UE and gateway may perform implicit handover in which the UE and gateway independently identify the same serving satellite using ephemeris data, without additional signaling overhead. The UE may also characterize its channel conditions. When insufficient, the UE may transmit an explicit handover message to the gateway via a different satellite visible to the UE. The explicit handover message may include a satellite identifier and a lock bit. The gateway may use the satellite identifier to convey wireless data with the UE via the different satellite during the next cycle. The gateway may use the lock bit to know how to perform handover away from the different cycle during subsequent cycles. In this way, the UE may direct handover, given that the gateway has no knowledge of the channel condition at the UE.

公开(公告)号：US11848747B1

公开(公告)日：2023-12-19

申请号：US17483451

申请日：2021-09-23

Applicant: Apple Inc.

Inventor： Matthew N. Ettus ,  Shahram Talakoub ,  Ian Buckley ,  Sebastian B. Seeber

IPC: H04W72/02 ,  H04B7/185 ,  H04W72/044 ,  H04W72/51

CPC classification number: H04B7/18582 ,  H04W72/02 ,  H04W72/044 ,  H04W72/51

Abstract: A communications system may include a satellite and user equipment (UE) devices. When the UE devices have uplink (UL) packets to transmit, each UE device may randomly select a time slot within a finite time window associated with a time reference of the satellite. The UE device may identify a path length between itself and the satellite and may generate a timing advance based on the path length, the time reference, and the time slot. The satellite may begin to receive the UL packets within the time window and may search received signals over the time window to identify the UL packets. The satellite may recover data payloads from the identified UL packets and may pass the recovered data payloads up a protocol stack. By limiting the search to the time window, the satellite may correctly distinguish the UL packets while using a minimal amount of processing resources.

公开(公告)号：US11165617B1

公开(公告)日：2021-11-02

申请号：US17031572

申请日：2020-09-24

Applicant: Apple Inc.

Inventor： Shahram Talakoub ,  Matthew N. Ettus

IPC: H04L27/26 ,  H04B1/04 ,  H04B7/06 ,  H04B1/10

Abstract: An electronic device may include a baseband processor and P antenna elements. The antenna elements may concurrently convey signals within M signal beams. The baseband processor may have a demultiplexer that receives a stream of M symbols. The processor may have M parallel data paths coupled between the demultiplexer and a beam former. The beam former may be coupled to amplifier circuitry over P parallel data paths. Inverse fast Fourier transformers (IFFTs) may be interposed on the M parallel data paths. A feedback path may be coupled between the M parallel data paths and the P parallel data paths. Crest factor reduction (CFR) circuitry may be interposed on the feedback path. The CFR circuitry may perform CFR operations on signals from the P parallel data paths iteratively and concurrently. This may minimize PAR in the system while supporting concurrent transmission of radio-frequency signals in multiple signal beams.