公开(公告)号：US11050483B2

公开(公告)日：2021-06-29

申请号：US16453940

申请日：2019-06-26

Applicant: QUALCOMM Incorporated

Inventor： Arvind Sridharan ,  Kapil Bhattad ,  Manikandan Chandrasekar ,  Gowrisankar Somichetty ,  Alberto Rico Alvarino ,  Xiao Feng Wang

IPC: H04L5/00 ,  H04B7/26 ,  H04J3/06 ,  H04L5/14 ,  H04L5/02 ,  H04W4/70 ,  H04L1/08 ,  H04L5/24 ,  H04W72/04 ,  H04L1/04 ,  H04W56/00

Abstract: A UE may determine a frame structure for narrowband communications, the frame structure corresponding to one frame structure from a group of TDD frame structures of different downlink and uplink subframe configurations. The UE receives configuration information indicating a first carrier to monitor for a BCH and/or a SIB1. Then, the UE receives a PSS, an SSS, and the BCH and/or the SIB1 using the frame structure determined for the narrowband communications. The first carrier that is used to receive the BCH and/or the SIB1 may be different from a second carrier used to receive one or more of the PSS or the SSS.

公开(公告)号：US20200169367A1

公开(公告)日：2020-05-28

申请号：US16773546

申请日：2020-01-27

Applicant: QUALCOMM INCORPORATED

Inventor： Arul Durai Murugan Palanivelu ,  Kapil Bhattad ,  Manikandan Chandrasekar ,  Alberto Rico Alvarino

IPC: H04L5/00 ,  H04W4/70 ,  H04W64/00 ,  H04W56/00 ,  H04W72/04

Abstract: Wireless communications systems and methods related to communicating positioning reference signals (PRSs) for narrowband communication are provided. A first wireless communication device determines a time-frequency PRS pattern based at least in part on a narrowband communication frequency band configuration and a PRS subframe configuration mode associated with a set of subframes. The first wireless communication device communicates, with a second wireless communication device, a plurality of PRSs using the determined PRS time-frequency pattern in the set of subframes. The PRS subframe configuration mode can indicate a first configuration including a bitmap indicating a set of PRS subframes positioned within a group of contiguous subframes, a second configuration indicating a subset of the group of contiguous subframes that may carry the PRSs, or a combination thereof. The first configuration and/or the second configuration can be used to indicate the set of subframes.

公开(公告)号：US10547421B2

公开(公告)日：2020-01-28

申请号：US15718447

申请日：2017-09-28

Applicant: QUALCOMM Incorporated

Inventor： Arul Durai Murugan Palanivelu ,  Kapil Bhattad ,  Manikandan Chandrasekar ,  Alberto Rico Alvarino

IPC: H04L5/00 ,  H04W72/04 ,  H04W56/00 ,  H04W4/70 ,  H04W64/00 ,  H04L29/08

Abstract: Wireless communications systems and methods related to communicating positioning reference signals (PRSs) for narrowband communication are provided. A first wireless communication device determines a time-frequency PRS pattern based at least in part on a narrowband communication frequency band configuration and a PRS subframe configuration mode associated with a set of subframes. The first wireless communication device communicates, with a second wireless communication device, a plurality of PRSs using the determined PRS time-frequency pattern in the set of subframes. The PRS subframe configuration mode can indicate a first configuration including a bitmap indicating a set of PRS subframes positioned within a group of contiguous subframes, a second configuration indicating a subset of the group of contiguous subframes that may carry the PRSs, or a combination thereof. The first configuration and/or the second configuration can be used to indicate the set of subframes.

公开(公告)号：US10524258B2

公开(公告)日：2019-12-31

申请号：US15724127

申请日：2017-10-03

Applicant: QUALCOMM Incorporated

Inventor： Gowrisankar Somichetty ,  Kapil Bhattad ,  Alberto Rico Alvarino ,  Xiao feng Wang ,  Manikandan Chandrasekar

IPC: H04L5/14 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W72/14 ,  H04W88/08 ,  H04W88/02

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a narrowband TDD frame structure of a group of narrowband TDD frame structures for narrowband communications. The apparatus may transmit a series of repetitions of a narrowband physical downlink channel using the narrowband TDD frame structure. In one aspect, a first portion of repetitions from the series of repetitions may be transmitted in one or more first sets of downlink subframes using a first scrambling sequence. In one aspect, a second portion of repetitions from the series of repetitions may be transmitted in one or more second sets of downlink subframes using a second scrambling sequence.

公开(公告)号：US10420102B2

公开(公告)日：2019-09-17

申请号：US15724164

申请日：2017-10-03

Applicant: QUALCOMM Incorporated

Inventor： Gowrisankar Somichetty ,  Kapil Bhattad ,  Alberto Rico Alvarino ,  Xiao feng Wang ,  Manikandan Chandrasekar

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04L5/14 ,  H04W72/14 ,  H04W88/08 ,  H04W88/02

Abstract: There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine to transmit a narrowband physical downlink channel in a subframe in a narrowband TDD frame structure of a plurality of narrowband TDD frame structures for narrowband communications. In addition, the apparatus may determine whether the subframe is a special subframe or a downlink subframe when the narrowband TDD frame structure includes one or more special subframes. Further, the apparatus may determine how to transmit a narrowband physical downlink channel based on the determination whether the subframe is a special subframe or a downlink subframe. Additionally, the apparatus may transmit the narrowband physical downlink channel.