This page presents the Optical Wireless Switch firmware overview developed during the OMEGA project, for the prototypes IRC_OWS and VLC-OWS.

 These firmwares process the Ethernet frames in OWMAC-LLC protocol following the requirements of Orange Labs document "D4.3 Optical Wireless MAC Specification".

 The OWMAC-LLC specifications describe a MAC-LLC protocol very complete with lots of performance features.

 However, for the VLC-OWS prototype, we do not need all these functions because we realized only a broadcast transmission. Then, the Ethernet frames are transmitted by Visible Light Communication (VLC) at 100 Mb/s to an optical card realized by HHI/Siemens, European partners in the OMEGA project.

 For information, the VLC OWMAC folder contents 2 files:

·        OWS_Proto_VLC-OWS.rar file contents the 3 OWMAC VLC binary files which are:

o   "OWS_Proto VLC-OWS V01R03_100MHz__(86Mbps) .ace" with a 100 MHZ interface clock,

o   "OWS_Proto VLC-OWS V01R03_84MHz__(71Mbps) .ace" with a 84 MHZ interface clock,

o   "OWS_Proto VLC-OWS V01R05_93MHz .ace" with a 95 MHZ interface clock.

·         And the Source VLC-OWS_V01R03 100 MHz.rar file contents all the sources for the firmware with 100 MHZ interface clock.

The VLC design specification can be found in Design OWS-VLC.pdf

Concerning the IRC-OWS prototype, we have developed some basic functionalities of these specifications vital for the IRC prototypes of this project.

 The OWMAC-LLC functionalities selected are:

·                    TDMA structure

·                    Half-Duplex transmission

·                    SuperFrame management

·                    Beacon and Data Periods

·                    Control frames

·                    Multi-sector transmission

·                    Reservation Protocol

·                    MAC frame format

 The OWS-IRC interface clock was set at 280 MHz to obtain the best rate/coverage link.

Analogically, the Ethernet frames encapsulated in OWMAC protocol are transmitted by Infra Red Communication (IRC) at 280 Mb/s to an optical IRC card realized by the University of Oxford (European partners of the project).

 For information, the IRC OWMAC folder contents 3 files:

·         The OWS_Proto_IRC-OWS.rar file contents the 5 OWMAC IRC binary files which are:

o   "OWS_Proto IRC-OWS V02R04_Quadro  dev A1 .ace". This OWMAC Firmware is for the device A1 of the prototype IRC-OWS in a two devices system.

o   "OWS_Proto IRC-OWS V02R04_Quadro  dev B2 .ace". This second OWMAC Firmware is for the device B2 of the prototype IRC-OWS in a two devices system.

o   "OWS_Proto IRC-OWS V02R06_3dev  dev A1 .ace". This OWMAC Firmware is for the device A1 of the prototype IRC-OWS in a three devices system.

o   "OWS_Proto IRC-OWS V02R06_3dev  dev B2 .ace". This second OWMAC Firmware is for the device B2 of the prototype IRC-OWS in a three devices system.

o   "OWS_Proto IRC-OWS V02R06_3dev  dev C3 .ace". This last OWMAC Firmware is for the device C3 of the prototype IRC-OWS in a three devices system.

·         The “Sources IRC-OWS_V02R04_Quadro.rar” file contents all the sources for the firmware with 280 MHZ interface clock and two devices half-duplex TDMA communication.

·         The “Sources IRC-OWS_V02R06.rar” file contents all the sources for the firmware with 280 MHZ interface clock and three devices half-duplex TDMA mesh network.

The IRC design specification can be found in Design OWS-IRC.pdf