Determining radar allocation in wireless communication system

1. A method of supporting radar operation, comprising:

determining one or more resources on a wireless medium of a wireless communication system for a radar allocation, wherein the radar allocation is determined by a slot configuration for a radio frame of the wireless communication system, wherein the slot configuration comprises one or more slots or symbols dedicated for the radar allocation; and

transmitting resource allocation information indicating the radar allocation, wherein the resource allocation information is transmitted to a wireless device in a broadcast system information message, a dedicated configuration message, blank resource signaling, and a downlink control information message, wherein the radar allocation is associated with one or more restrictions comprising a transmission power limitation, a restriction for spatial directions, and a use of allocated frequencies,

wherein the blank resource signaling includes a RateMatchpattern signaling on a Physical Dedicated Shred Channel (PDSCH), wherein the dedicated configuration message includes a Radio Resource Control Protocol (RRC) message or a Medium Access Control message (MAC), wherein the downlink control message is Downlink Control Information (DCI) carried on a Physical Downlink Control Channel (PDCCH),

wherein the slot configuration supports distribution of sensing time of radar signals during the radar allocation between the wireless device and the wireless communication system, wherein the slot configuration comprises slots or symbols dedicated for a sounding operation, wherein the radar allocation comprises more than one gap in a communication allocation on the wireless medium, and

wherein the more than one gap in the communication allocation is to be free from communications of the wireless communication system and the more than one gap identifies a resource of the wireless medium to be used for a radar operation.