公开(公告)号：US11509407B2

公开(公告)日：2022-11-22

申请号：US17267769

申请日：2019-08-09

Applicant: Apple Inc.

Inventor： Hua Li ,  Jie Cui ,  Yang Tang ,  Tom Harel ,  Rui Huang

IPC: H04B17/318 ,  H04B17/24 ,  H04B17/336

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for accuracy measurements in UE baseband-demodulation-performance tests in new radio (NR) frequency range 2 (FR2) operations. The accuracy measurements includes, but not limited to, reference signal received power (RSRP) accuracy, reference signal received quality (RSRQ), and signal-to-noise and interference (SINR) accuracy. Various embodiments describe how to measure RSRP/RSRQ/SINR accuracies in an over-the-air (OTA) test environment in NR FR2 operations.

公开(公告)号：US10938462B2

公开(公告)日：2021-03-02

申请号：US16542310

申请日：2019-08-16

Applicant: Apple Inc.

Inventor： Tal Azogui ,  Yaniv Frishman ,  Atsuo Kuwahara ,  Tom Harel

IPC: H04W4/02 ,  H04B7/06 ,  H04W40/14 ,  H04W40/06 ,  H04W40/12 ,  H04W40/20 ,  H04W88/08

Abstract: Beamforming is used in wireless link communication to improve a wireless link through increased channel capacity and diversity by focusing a beam, such as from multiple antennas, in the direction of the receiver. Where the receiver may be capable of measurements relevant to beamforming, more particularly measurements that vary or are otherwise dependent upon changes in beamforming settings, reference to such measurements and corresponding beamforming settings may improve performance. In this Disclosure, a sink device transmits a data stream to a source device, wherein said data stream comprises the position of the sink device. The data stream may further comprise data such as link quality, heading information, or discretized location. The source device stores this data in a memory. When the wireless link deteriorates, the source device assesses its memory to select a candidate beamforming setting with some indicia of success, such as those that correspond closely to the sink device's position, the most recently used beamforming settings, or beamforming settings that previously resulted in a satisfactory wireless link quality.