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美 國 車 載 資 通 訊 標 準 – IEEE 802.11<br />
• IEEE 802.11ai – Fast Initial Link Setup<br />
– Target at reduce the time required by a client to attach an AP<br />
• Objective: less than 100ms<br />
– With low link establishment latency, hotspots on roads would have<br />
potential to be utilized by V2R application and service<br />
– Draft 0.5 is expected in May, 2013<br />
• IEEE 802.11aq – Pre-association Service Discovery<br />
– Target at defining an efficient architecture for clients to select APs<br />
in different WLANs before executing association<br />
– Suits the needs of vehicular mobility applications<br />
• Vehicles acts as fast moving clients<br />
• MAC-layer linkage is short due to high mobility<br />
• Smart location-based services will need Pre-association Service Discovery<br />
– 802.11aq WG formed in Jan, 2013<br />
• Progress: Complete the use cases included in the spec<br />
Copyright 2013 ITRI 工 業 技 術 研 究 院<br />
ITRI CONFIDENTIAL DOCUMENT DO NOT COPY OR DISTRIBUTE<br />
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