Technical Information

Wireless3G4Free.com’s approach is based on the convergence of three technological trends: Collaborative wireless standards (e.g. 3GPP, 802.11), Next Generation Internet Technology (Mobile-IPv6, DiffServ, etc.) and open-source software. The components are combined to provide innovative, cost and spectrally efficient solutions for providing high-end Internet services to mobile users. Specifically, our approach allows for:

Advanced signal processing techniques for ensuring high spectral efficiency

smart antenna processing

iterative coding

multiuser scheduling

Higher layers protocols & services (direct interconnection with IPv4 and IPv6 networks and WLAN systems)

Joint radio resource, mobility and QoS management across different radio access technologies

Our hardware/software platforms currently run under the RTLinux real-time operating system using public-domain IPv4 and IPv6 protocol implementations. The software portion can be built from standard RedHat 7.3 and 8.0 releases of the Linux operating system and currently runs on x86-based processing systems. Low-power embedded solutions are currently under development.

Our solutions cover the following operating modes

Real time processing for wideband signals (e.g. 3G Standards) in the RF Spectrum (currently 1.900 to 1.920GHz) or at Intermediate Frequency (70 MHz)

Recording mode for off-line post-processing (measurement campaigns)

3GPP Radio Access Network Simulation for Linux clusters

The platform currently implements the 3GPP UMTS/TDD high chip rate (3.84 Mchip/s) access stratum protocols with an IP-based interconnection with off-the-shelf 802.11 WLAN solutions.

A detailed description of the platform software architecture can be downloaded Here

A preliminary description of RF sub-systems and deployment scenarios can be downloaded Here