Reception Cycle-aware Resource Block Allocation for Real Time Video Traffic in 3GPP LTE System

Discontinuous reception (DRX) in Long-Term Evolution reduces power consumption of users' equipment (UE) by periodically turning on and off the radio reception module. As the module falling asleep, packets from base stations are deferred and even useless due to exceeding delay bounds in real time applications such as video streaming. Current resource allocators only skip transmission opportunities of those sleeping UEs, rather than consider their reception cycle and traffic delay bounds. This study proposes a mechanism of resource block allocation called Reception Cycle-aware resource block Allocation (RCA), which defers most transmissions until the last moment, and reserves a minimal resource block for waking up each UEs that has traffic going expired, to reduce packet loss/miss rate (PLR). Simulation results show that RCA can more effectively reduce power consumption and cope with packets missing deadline than traditional methods do. Users may enjoy real-time applications and also a longer battery life just with realization of our mechanism only at the base station side.