Fritz Kasslatter, Siemens AG Östereich CT T CEE - Lakeside ...

vehicle-to-X communication
requirements for safety critical applications
Requirement WiFi IEEE802.11p
ETSI ES 202 663
• network acquisition / latency --- +++
• immediate establishment of communication (no management overhead).
• immediate exchange of messages to unknown neighbors (< 10 ms)
• reliability --- +++
• dedicated frequency band 5.9 GHz
• control of communication load (e.g. congestion control)
• quality of services + +++
• critical application have to be treated with higher priority over the air.
• security ++ +++
• real-time security (e.g. digital signature) , small key data (e.g ellipt. curves)
10/22/2010 11
Fritz Kasslatter, Siemens AG Östereich CT T CEE AT