- Patent Title: Carrier sense adaptive transmission (CSAT) in unlicensed spectrum
-
Application No.: US14486717Application Date: 2014-09-15
-
Publication No.: US10542435B2Publication Date: 2020-01-21
- Inventor: Ahmed Kamel Sadek
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Main IPC: G06F11/00
- IPC: G06F11/00 ; H04W16/14 ; H04J3/16 ; H04W72/12 ; H04W72/08 ; H04W74/08 ; H04W76/28 ; H04L5/00 ; H04J3/00

Abstract:
Systems and methods for Carrier Sense Adaptive Transmission (CSAT) and related operations in unlicensed spectrum are disclosed to reduce interference between co-existing Radio Access Technologies (RATs). The parameters for a given CSAT communication scheme may be adapted dynamically based on received signals from a transceiver for a native RAT to be protected and an identification of how that RAT is utilizing a shared resource such as an unlicensed band. Other operations such as Discontinuous Reception (DRX) may be aligned with a CSAT Time Division Multiplexed (TDM) communication pattern by way of a DRX broadcast/multicast message. Different TDM communication patterns may be staggered in time across different frequencies. Channel selection for a co-existing RAT may also be configured to afford further protection to native RATs by preferring operation on secondary channels as opposed to primary channels.
Public/Granted literature
- US20150085684A1 CARRIER SENSE ADAPTIVE TRANSMISSION (CSAT) IN UNLICENSED SPECTRUM Public/Granted day:2015-03-26
Information query