This disclosure relates to techniques for supporting cross functional signaling for device-to-device wireless communication, such as an off grid radio system. According to some embodiments, a first wireless device may initiate, modify, and/or close a device-to-device wireless communication session with a second wireless device using session management signaling associated with a protocol layer (possibly a higher layer, such as a layer supported by an application processor) of the first wireless device. The wireless device may provide indications of session initiation, modification, and/or closing from the protocol layer used to exchange the session management signaling to another protocol layer (possibly a lower layer, such as a layer supported by a baseband processor) of the first wireless device.