Method and system for exchanging information for sidelink communication in a wireless network

A terminal device configured for deployment in a wireless network for sidelink communication, the terminal device comprising:

• radio circuitry;
• and
• processing circuitry configured to:
• estimate achievable sidelink performance based on sidelink performance information, the sidelink performance information including information about local radio conditions, sidelink capabilities of the terminal device, sidelink capabilities of one or more neighboring terminal devices, and sidelink Quality-of-Service (QoS) requirements;
• and
• adjust scheduling or priority associated with transmissions for sidelink discovery or sidelink establishment in dependence on the estimated achievable sidelink performance,
• wherein adjusting the scheduling or the priority comprises one or more of the following:
• suspending transmission of sidelink discovery messages by the terminal device, responsive to the estimated achievable sidelink performance indicating a low probability of meeting the sidelink QoS requirements;
• changing a periodicity of transmission by the terminal device of the sidelink discovery messages, in dependence on a probability of meeting the sidelink QoS requirements, as determined from the estimated achievable sidelink performance;
• suspending or postponing transmission of a sidelink discovery response by the terminal device;
• including in a sidelink discovery response transmitted by the terminal device an indication of a likelihood of meeting the sidelink QoS requirements, and wherein the indication is based on the estimated achievable sidelink performance and the sidelink discovery response is transmitted responsive to reception by the terminal device of a sidelink discovery request incoming from one of the one or more neighboring terminal devices;
• and
• controlling the periodicity of transmissions by the terminal device of sidelink discovery requests.