3GPP LTE-A D2D Method and Apparatus for Public safety users priority based time and energy efficient D2D discovery in 3GPP LTE-A system

摘要

A public security user priority based time and energy efficient D2D search method and apparatus in the 3GPP LTE-A system proposed in the present invention are presented. In the 3GPP LTE-A system proposed in the present invention, the public safety user priority based time and energy efficient D2D search method includes placing DPUs and DNPUs in a network coverage area and initializing parameters, based on public safety user priorities Dynamically adjusting the DPUs according to the number of DPUs, allocating search resource blocks for the DPUs and the DNPUs, and allocating resources among the DPUs using a switching scheme according to the degree of competition for channel access .