公开(公告)号：US20180146506A1

公开(公告)日：2018-05-24

申请号：US15637457

申请日：2017-06-29

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Juan Montejo ,  Taesang Yoo ,  Zhifei Fan

IPC: H04W84/18 ,  H04W4/18 ,  H04W8/00 ,  H04M11/06 ,  H04W76/02

Abstract: Phase compensation in a new radio (NR) shared spectrum (NR-SS) coordinated multipoint (CoMP) environment is discussed. A base station may synchronize the phase between one or more additional base stations in a coordinated multipoint (CoMP) group serving one or more user equipments (UEs). This first synchronizing is performed prior to a current transmission opportunity between the CoMP group and the UEs. During transmission, a UE will sent a phase compensation reference signal (PCRS) to help with adjusting a phase drift that exceeds a predetermined threshold. The PCRS may be triggered by a signal from the base station or may be sent routinely by the UE. The UEs will transmit PCRS after each subframe, which the base stations use to adjust the phase.

公开(公告)号：US20180139018A1

公开(公告)日：2018-05-17

申请号：US15637555

申请日：2017-06-29

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Xiaoxia Zhang ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Juan Montejo

IPC: H04L5/00 ,  H04W8/00 ,  H04W48/16 ,  H04W28/18 ,  H04J3/06 ,  H04W40/24 ,  H04L29/08

CPC classification number: H04L5/0035 ,  H04J3/0602 ,  H04L5/0078 ,  H04L67/04 ,  H04W8/005 ,  H04W16/14 ,  H04W28/18 ,  H04W40/244 ,  H04W48/16 ,  H04W56/001 ,  H04W74/0808

Abstract: Network discovery and synchronization for new radio (NR) shared spectrum (NR-SS) is discussed for a wireless network having a super frame configuration on a shared spectrum shared between a plurality of network operators. A base station may obtain a discovery preamble from a plurality of network entities within the wireless network, wherein each of the plurality of network entities belongs to one or more of the plurality of network operators and shares the super frame configuration. The base station detects the timing of the super frame configuration using the discovery preamble and may then synchronize the base station to the super frame configuration according to the detected timing.