Section Days abstract book 2010.indd - RUB Research School ...

NSE_19
OPTIMAL MEMORY MANAGEMENT FOR A
MULTICORE MOBILE TERMINAL
Anas Showk
Institute for Integrated Systems
Ruhr-Universität Bochum, 44780 Bochum, Germany
email: anas.showk@rub.de
The Long Term Evolution (LTE) is the successor technology of the 3G wireless system. The
high data rates enabled by LTE can benefit from a strong computational power provided by
today's high-performance embedded processors. In this work we therefore utilize a multi-core
processor to increase the LTE system throughput in the mobile terminal. We investigate the
dynamic memory allocation scheme for the LTE protocol stack, modeled using Specification
and Description Language (SDL), as the underlying issue with migrating from single to
multiple cores. We discover that, under some schemes, multi-core performance becomes
inferior to a single-core, especially in case of intensive dynamic memory allocation and
deallocation. By modifying the SDL system's run time kernel we implement a static memory
management scheme. This is supplemented by a selective usage of resource protection in
single- and dual-core situations. As a result, an increase of the system throughput by about
75% can be observed when migrating from one core to two cores.