公开(公告)号：US11039382B2

公开(公告)日：2021-06-15

申请号：US16611638

申请日：2018-05-23

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Wenting Chang ,  Anthony Lee ,  Seau S. Lim ,  Salvatore Talarico ,  Jinnian Zhang

IPC: H04W48/16 ,  H04B1/7156 ,  H04L5/00 ,  H04W72/12 ,  H04W74/08

Abstract: Systems and methods of measuring reference signals in a multefire scenario are described. A UE receives control information anchor channel dependent on whether the UE is in an adaptive frequency hopping system (FHS) and whether the FHS is a LBT FHS. The reference signals are received on an unlicensed band via the anchor and/or a non-anchor channel and measured for RRM and/or in-sync or out-of-sync measurements. RRM measurements are transmitted to the eNB for mobility management and otherwise the validity of an in- or out-of-sync indication is determined and a counter started when valid. The control information has a subframe configuration and resource allocation, which is used for SRS transmission on the non-anchor channel. Uplink scheduling information is received on the anchor channel for data transmission on the non-anchor channel based on the SRS.

公开(公告)号：US10980068B2

公开(公告)日：2021-04-13

申请号：US16476180

申请日：2018-01-05

Applicant: Apple Inc.

Inventor： Seau S. Lim ,  Candy Yiu ,  Marta Martinez Tarradell ,  Sudeep K. Palat ,  Daewon Lee

IPC: H04W74/08 ,  H04W76/19 ,  H04W76/27 ,  H04W68/02

Abstract: Embodiments are generally directed to establishment of random access channel communications. An embodiment of an apparatus for a user equipment (UE) to perform a random access (RACH) procedure, the apparatus including one or more baseband processors to generate a first Radio Resource Control (RRC) RACH procedure message to transmit to an Evolved Node B (eNB) or Next Generation Node B (gNB), the first RRC RACH procedure message including a UE identification (ID) and a request message with scheduled transmission content data, the UE ID being a common UE ID for RACH procedures between the UE and the eNB or gNB, and process a second RRC RACH procedure message received from the eNB or gNB, the second RRC RACH procedure message including contention resolution data for a random access preamble and the request message; and a memory to store data for the RACH procedure.

公开(公告)号：US10784947B2

公开(公告)日：2020-09-22

申请号：US16379047

申请日：2019-04-09

Applicant: Apple Inc.

Inventor： Yang Tang ,  Shuang Tian ,  Andrey Chervyakov ,  Jie Cui ,  Hua Li ,  Dmitry Belov ,  Carlos Cordeiro ,  Geng Wu ,  Jeongho Jeon ,  Puneet Jain ,  Qian Li ,  Youn Hyoung Heo ,  Anthony Lee ,  Seau S. Lim

IPC: H04B7/06 ,  H04W72/04 ,  H04W24/10 ,  H04W24/08

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE receive training signals from a plurality of transmit-receive points (TRPs) associated with the gNB. Each training signal may comprise a reference signal resource identifier (ID) to indicate a corresponding TRP and a corresponding transmit direction of a plurality of transmit directions. The UE may, for each transmit direction of the plurality of transmit directions, determine an average signal quality measurement based on individual signal quality measurements in multiple receive directions. The UE may select, for reporting to the gNB, a subset of the average signal quality measurements to ensure that the average signal quality measurements excluded from the subset are less than or equal to a minimum value of the average signal quality measurements in the subset.