Contention based radio resource management for small packet transmission

摘要

It is provided a method, comprising informing on one or more resource pools comprised by a set of resource pools, wherein each of the resource pools comprises respective one or more resource units, and each of the resource units is defined by at least one of a respective frequency band, a respective time period, and a respective coding space, controlling a terminal device such that, if the terminal device wants to perform a contention based transmission, the contention based transmission may be performed on at least one of the resource pools of the set.