Invention Grant
- Patent Title: Wireless communication between wideband ENB and narrowband UE
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Application No.: US15635000Application Date: 2017-06-27
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Publication No.: US10893523B2Publication Date: 2021-01-12
- Inventor: Srinivas Yerramalli , Tamer Kadous , Chih-Hao Liu , Chirag Patel , Alberto Rico Alvarino
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Arent Fox, LLP
- Agent Nerrie M. Zohn
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04W74/08 ; H04W4/70 ; H04W28/26 ; H04W16/14 ; H04W88/02 ; H04W88/08 ; H04L1/12 ; H04B1/713 ; H04L1/18 ; H04L29/08 ; H04L5/00 ; H04L5/14

Abstract:
A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A base station apparatus may perform a dual CCA procedure for a frame, wherein the dual CCA procedure comprises a first type of CCA procedure followed by a second type of CCA procedure when the first type of CCA procedure is unsuccessful. The apparatus may transmit during the frame when at least one CCA procedure of the dual CCA procedure is successful and may refrain from transmitting during the frame when both CCA procedures of the dual CCA procedure are unsuccessful. In performing the dual CCA procedure, the apparatus may perform CCA for a first period of time then perform eCCA for a second period of time following the CCA, when the CCA is unsuccessful.
Public/Granted literature
- US20180124789A1 WIRELESS COMMUNICATION BETWEEN WIDEBAND ENB AND NARROWBAND UE Public/Granted day:2018-05-03
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