公开(公告)号：US20230040605A1

公开(公告)日：2023-02-09

申请号：US17758817

申请日：2020-02-13

Applicant: QUALCOMM Incorporated

Inventor： Changhwan PARK ,  Bin HAN ,  Vijay BALASUBRAMANIAN ,  Mihir Vijay LAGHATE ,  Valentin Alexandru GHEORGHIU ,  Arash MIRBAGHERI

IPC: H04B17/12 ,  H04W24/10 ,  H04B17/17 ,  H04B17/26

Abstract: Embodiments include methods of testing wireless devices for beam forming performance. Various aspects may include determining measurements of communication performance of the wireless device at each of a number of different angular orientations of the wireless device with respect to an antenna within a test chamber, and determining whether the wireless device satisfies beam forming performance requirements by comparing the measurements of communication performance to pass/fail criteria. Further embodiments may include a wireless device testing apparatus configured to perform testing wireless devices for beam forming performance. In some embodiments, a wireless device testing apparatus may include a test chamber, an antenna within the test chamber, a rotatable positioning system within the test chamber configured to hold a wireless device and rotate the wireless device within a range of orientations with respect to the antenna, and a computing device coupled to the antenna and the rotatable positioning system.

公开(公告)号：US20210021504A1

公开(公告)日：2021-01-21

申请号：US16656964

申请日：2019-10-18

Applicant: QUALCOMM Incorporated

Inventor： Vijay BALASUBRAMANIAN ,  Sitaramanjaneyulu KANAMARLAPUDI ,  Pradeep SAGANE GOWDA ,  Yogesh TUGNAWAT

IPC: H04L12/26 ,  H04L1/18 ,  H04W24/10

Abstract: Test entity for verifying user equipment (UE) device layer 2 sustained downlink maximum data rate decoding performance may send a non-access stratum message to the UE device that requests activation of a downlink-only test mode, sending a first Packet Data Convergence Protocol (PDCP) status request to the UE device, send downlink PDCP packets to the UE device during a measurement interval, receive a physical layer (PHY) hybrid acknowledge request (HARQ) acknowledgement (ACK) or non-acknowledgement (NACK) from the UE device and determine expected missed layer 1 packets based on the received PHY HARQ ACK/NACK, send a second PDCP status request to the UE device after the measurement interval, receive a PDCP status report from the UE device, and determine missed layer 2 packets from a First Missing Count (FMC) value or bitmap included in the received PDCP status report.

公开(公告)号：US20210022028A1

公开(公告)日：2021-01-21

申请号：US16656947

申请日：2019-10-18

Applicant: QUALCOMM Incorporated

Inventor： Vijay BALASUBRAMANIAN ,  Sitaramanjaneyulu Kanamarlapudi ,  Pradeep Sagane Gowda ,  Yogesh Tugnawat

IPC: H04W24/10 ,  H04L12/26 ,  H04L1/18

Abstract: Test entity for verifying user equipment (UE) device layer 2 sustained downlink maximum data rate decoding performance may send a non-access stratum message to the UE device that requests activation of a downlink-only test mode, sending a first Packet Data Convergence Protocol (PDCP) status request to the UE device, send downlink PDCP packets to the UE device during a measurement interval, receive a physical layer (PHY) hybrid acknowledge request (HARQ) acknowledgement (ACK) or non-acknowledgement (NACK) from the UE device and determine expected missed layer 1 packets based on the received PHY HARQ ACK/NACK, send a second PDCP status request to the UE device after the measurement interval, receive a PDCP status report from the UE device, and determine missed layer 2 packets from a First Missing Count (FMC) value or bitmap included in the received PDCP status report.