LTE and WiMedia Modules Published

Written for openWNS by Maciej Muehleisen on 2010-12-30

An IMT-Advanced evaluation compliant LTE simulator module has been released together with an example configuration and tutorial on how to evaluate performance in the IMT-Advanced Indoor Hotspot scenario. Among others the following aspects are implemented:

- FDD configuration with scalable bandwidth from 1.4 MHz to 20 MHz
- HARQ
- Channel state estimation (CQI) and dynamic rate adaptation
- Configurable radio resource scheduling algorithms (default set to RoundRobin as specified in 3GPP baseline configuration)
- IMT-Advanced compliant channel model (ITU-R document M.2135)

Also an ECMA-368 (WiMedia) simulation module was released with following characteristic:

The ECMA-368 standard, also known as the WiMedia standard is partly implemented into the WiMeMac module. This module uses the OpenWNS framework and focuses on selected properties of the medium access protocols conform to ECMA-368, mainly:

The Distributed Reservation Protocol (DRP)

- DRP Negotiation (on demand)
- DRP Conflict Resolution
- Blocked or Random Reservation (number of blocks in DTP can be configured)

Prioritized Contention Access (PCA)

Beacon Protocol (partly implemented, negotiation by using Information Elements(IE))

Rate Adaptation (based on estimated and targeted Frame Error Rate (FER))

The ultra wideband (UWB) channel characteristics are considered by a data link level (DLL) mapping, taking also certain aspects of WiMedia’s channel coding into account, different Channel Models from IEEE 802.15.3 Task Group are selectable. The physical layer (PHY) in use is based on the OpenWNS Radio Interference Simulation Engine (RISE), which is parametrized on UWB bandwidth.