The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2023
Filed:
Jan. 10, 2019
Idac Holdings, Inc., Wilmington, DE (US);
Ahmad Reza Hedayat, Aliso Viejo, CA (US);
Oghenekome Oteri, San Diego, CA (US);
Hanqing Lou, Syosset, NY (US);
Mahmoud Taherzadeh Boroujeni, San Diego, CA (US);
Xiaofei Wang, Cedar Grove, NJ (US);
Rui Yang, Greenlawn, NY (US);
Shahrokh Nayeb Nazar, San Diego, CA (US);
IDAC Holdings, Inc., Wilmington, DE (US);
Abstract
Methods, systems, and devices for channel access and listen-before-talk approaches for new radio operation in unlicensed bands and/or licensed bands. A gNB and a wireless transmit/receive unit (WTRU) may operate in unlicensed spectrum. The gNB may perform listen-before-talk operation, and when successful, may send a downlink control channel with a slot format indication (SFI) to the WTRU. There may also be a handshaking procedure with an exchange of a request to transmit (RTT) and a request to receive (RTR). Prior to receiving the downlink channel, the WTRU may monitor search spaces at a first level, and once the downlink channel is received the WTRU may monitor search spaces at a second level. At the end of transmission, the WTRU may revert back to monitoring search spaces at the first level. In one example, the first level may be a mini-slot level and the second level may be a slot level.