公开(公告)号：US11368891B2

公开(公告)日：2022-06-21

申请号：US16994161

申请日：2020-08-14

Applicant: Apple Inc.

Inventor： Anatoliy Sergey Ioffe ,  Alexander Sayenko ,  Jie Cui

IPC: H04W36/18 ,  H04W36/06 ,  H04W72/04 ,  H04W56/00 ,  H04W74/08

Abstract: The present disclosure relates to systems and methods for operating transceiver circuitry to communicate signals on various frequency ranges based on primary cell and/or secondary cell assignments. A controller associated with the transceiver circuitry may operate a receiver to receive a handover initiation packet using a first frequency range as a primary cell from a base station. The controller may adjust the receiver and a transmitter to use a second frequency range as the primary cell, to adjust the receiver and the transmitter to detach from the first frequency range as the primary cell, and to reset information corresponding to the first frequency range to enable attachment of the first frequency range to a secondary cell.

公开(公告)号：US20220132554A1

公开(公告)日：2022-04-28

申请号：US17213883

申请日：2021-03-26

Applicant: Apple Inc.

Inventor： Alexander Sayenko ,  Anatoliy Sergey Ioffe

IPC: H04W72/14 ,  H04W72/04 ,  H04W74/08

Abstract: For wideband operation in the unlicensed spectrum, a network operator may allocate a channel having multiple sub-bands to user equipment. The presently disclosed embodiments enable the user equipment to select one of multiple noncontiguous sub-bands and/or blocks of contiguous sub-bands that are available in the channel, and transmit data over the selected one of the noncontiguous available sub-bands and/or blocks of contiguous available sub-bands. The user equipment may select the one of the noncontiguous available sub-bands and/or blocks of contiguous available sub-bands of the channel based on the largest block of contiguous available sub-bands, the largest grant size, the best signal quality, the greatest estimated throughput, and/or the highest priority level. Moreover, in cases where data is transmitted using contiguous available sub-bands, guard bands disposed in between the contiguous available sub-bands may also be used to transmit data.

公开(公告)号：US20210051546A1

公开(公告)日：2021-02-18

申请号：US16800887

申请日：2020-02-25

Applicant: Apple Inc.

Inventor： Alexander Sayenko ,  Anatoliy Sergey Ioffe

IPC: H04W36/08 ,  H04W36/00 ,  H04W74/08 ,  H04W72/14 ,  H04W76/27 ,  H04W72/04 ,  H04W56/00 ,  H04L1/00 ,  H04L5/00

Abstract: When user equipment (UE) is to be handed over, the network and/or the UE determines a best beam for the UE's interactions with the target cell before the handover is completed. One or more additional next best beams may also be determined. The network (e.g., the target cell) allocates one or more uplink (UL) grants that corresponds to the best beam. Via a current cell, the UE receives the one or more UL grants from the network pertaining to communications between the UE and the target cell. The UE determines whether any beams of the one or more UL grants satisfy beam criteria. The beam criteria may include 1) an allocated beam being the current best beam or 2) an allocated beam being within a strength threshold of the current best beam. If the criteria is not satisfied, the UE initiates another handover type (e.g., a RACH-based handover).