公开(公告)号：US20160057653A1

公开(公告)日：2016-02-25

申请号：US14799515

申请日：2015-07-14

Applicant: QUALCOMM Incorporated

Inventor： Huilin XU ,  Alexei GOROKHOV ,  Mariam MOTAMED ,  Raghu CHALLA ,  Joshua MACDONALD ,  Kai XIE ,  Vivek PADI ,  Alex MATEEN ,  Juchuan MA

IPC: H04W28/02 ,  H04W76/04

CPC classification number: H04W28/0289 ,  H04L27/00 ,  H04L27/2657 ,  H04L27/2695 ,  H04L2027/0034 ,  H04L2027/0065 ,  H04W56/0035 ,  H04W76/28

Abstract: Aspects of frequency error detection with Physical Broadcast CHannel (PBCH) frequency hypothesis are described. For example, a method and apparatus are disclosed for frequency tracking in a user equipment (UE) may include detecting a change in frequency that exceeds a pull-in range of a frequency tracking loop (FTL) of the UE. The method and apparatus may also include identifying a tracking recovery frequency in response to the change in frequency being detected, wherein the tracking recover frequency is identified from a set of frequency hypotheses and based on decoding of the PBCH received by the UE. The method and apparatus may further include updating the FTL with the tracking recovery frequency.

Abstract translation: 描述了使用物理广播信道（PBCH）频率假设进行频率误差检测的方面。 例如，公开了用于用户设备（UE）中的频率跟踪的方法和装置，其可以包括检测超过UE的频率跟踪环路（FTL）的引入范围的频率变化。 所述方法和装置还可以包括响应于被检测的频率的变化来识别跟踪恢复频率，其中，从一组频率假设并且基于由UE接收到的PBCH的解码来识别跟踪恢复频率。 该方法和装置还可以包括利用跟踪恢复频率来更新FTL。

公开(公告)号：US20230388990A1

公开(公告)日：2023-11-30

申请号：US18313052

申请日：2023-05-05

Applicant: QUALCOMM Incorporated

Inventor： Paolo MINERO ,  Ajay K.R. BODDU ,  Scott HOOVER ,  Kai XIE ,  Levent AYDIN ,  Aamod KHANDEKAR ,  Brian Clarke BANISTER

IPC: H04W72/0453

CPC classification number: H04W72/0453

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may communicate via a first component carrier (CC) during a first time period. The UE may communicate via a second CC during a second time period. The UE may receive a first indication to deactivate the second CC during a third time period that at least partially overlaps with the first time period. The UE may receive a second indication to activate the second CC for communication during a fourth time period. The UE may communicate via the second component carrier during the fourth time period using an initial frequency error correction at a beginning of the fourth time period, the initial frequency error correction based at least in part on a frequency error of the first CC during the third time period. Numerous other aspects are described.