UE AUTONOMOUS RESOURCE SELECTION PROCEDURES IN VEHICLE-TO-VEHICLE COMMUNICATIONS WITH POWER THRESHOLD DETERMINATION

摘要

Selection of a subset of time-frequency resources, for autonomous mode operation of V2V UEs, are carried out in the context of 3GPP LTE device-to-device, D2D, direct mode communication mechanisms. This may be performed based on measurements of power and received sidelink control information (SCI) transmitted by the other UEs. Based on these measurements and information, wherein priority information from the traffic of other UEs is obtained, the UE may selectively exclude spectrum resources, from the set of possible resources, according to a predetermined power threshold, to obtain a final set of resources from which the UE may select resources to use for own transmissions. The applied power threshold is determined according to various criteria. In some implementations, the exclusion of the resources may be based on an iterative operation in which a power threshold value is incrementally modified until a candidate number of resources are available. Additionally, in others, UE own priority assignments and other UEs' priority assignments may be used to select the power threshold value applied to select or not a particular resource unit.