Invention Grant
- Patent Title: Using a side-communication channel for exchanging radar information to improve multi-radar coexistence
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Application No.: US16354018Application Date: 2019-03-14
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Publication No.: US11644529B2Publication Date: 2023-05-09
- Inventor: Kapil Gulati , Junyi Li , Sundar Subramanian , Jayakrishnan Unnikrishnan
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP
- Agent Danai Nelisile Mhembere
- Main IPC: G01S7/02
- IPC: G01S7/02 ; G01S7/40 ; H04W74/00

Abstract:
Methods, systems, and devices for wireless communications are described. In some systems, radio signals may reach a receiving antenna at a user equipment by two or more paths, which can cause interference (e.g., destructive multipath interference, constructive multipath interference, etc.). To reduce the interference, the user equipment may perform interference suppression, shaping, or both based on choosing radar waveform patterns that are varied across chirps. In one aspect, the user equipment (e.g., a vehicle) may identify waveform patterns selected by nearby vehicles based on side channel or centralized signaling and may suppress or shape interference by selecting waveform parameters based on this information. In one aspect, the pattern of waveform parameters is chosen from a codebook of patterns. The selected pattern can be broadcasted to the other vehicles using a side-communication channel.
Public/Granted literature
- US20190293748A1 USING A SIDE-COMMUNICATION CHANNEL FOR EXCHANGING RADAR INFORMATION TO IMPROVE MULTI-RADAR COEXISTENCE Public/Granted day:2019-09-26
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