The Machine to Machine solutions have been developed in the former Wavecom company, called actually Sierra Wireless.
The difference between the handset manufacturers is the development of Machine to Machine solution; the chip is less sensitive for the market and stays sufficiently stable to the conjuncture.
The product of Sierra Wirelee since 2010 is the ASIC based chips using the 2G (GSM/GPRS/EDGE) / 3G protocols to communicate from machine to machine. The typical applications are connection of cars via the same BTS servers, telemetry between the energy counters located in areas with difficult access ( desert, jungle, north polar circle, taiga).
Special 3GPP protocol branch has been developed for this application taking into account less necessary information to transmit.
Technical realization of project.
At that moment some 3GPP features were considered to be implemented to the M2M Sierra Wireless new chip. The DSP code was supposed to be integrated in its turn to new ASIC chip.
The following features were supposed to be integrated (in most part from Release 7 of GERAN, 3GPP): Layer 1 improvements, acoustic echo canceller, SAIC/DARP-I (single antenna interference cancellation), ciphering A5/3.
My participation in the project.
The following features has been implemented or simulated:
- Ciphering A5/3 for GSM implementation in assembly
- Integration and tests/simulation of AEC
- SAIC/DARP I simulation
- Layer 1 GSM/GPRS/EDGE improvements
- 3GPP participation
- Discussions with providers
- Discussions with marketing team on the road map
Environment and technics used in project:
Environment: Matlab, C, Asm Teak, DSP Teak Ceva, CCSS/COSSAP simulation, Head Acoustics AEC test bench
Techniques: SAIC, assembly optimization, Adobe Premier audio processing, creating the test vectors with acoustic echo.
Main results:
- Integrated AEC in assembly and then tested in ASIC
- A5/3 implemented and well tested in ASIC
- Efficiently participated in GERAN 3GPP meetings
