23-04-2012, 12:04 PM
Wireless Personal Area Networks
25_wpan.pdf (Size: 1.1 MB / Downloads: 1,107)
Introduction
WirelessPersonalAreaNetworks
– Person centered short-range wireless connectivity
Applications
Applications include
– Short-range (< 10 m) connectivity for multimedia
applications
• PDAs, Cameras, Voice (hands free devices)
• High QoS, high data rate (IEEE 802.15.3)
– Industrial sensor applications
• Low speed, low battery, low cost sensor networks (IEEE
802.15.4)
Conclusions
IEEE 802.15 WPAN Work Group was introduced
– WPAN standards under active development
• Increasing data rates to be expected
• Low power consumption
• Self-configuring networks
• Coexistense of 802.11 is an issue
• Future WPAN interests
– mm-wave systems (@ 60 GHz)
– Mesh networks (relaying)
– MIMO?
• Not (yet) implicitly included in IEEE 802.15 framework
• Enables enhanced reliability (diversity techniques) and
capacity (spatial multiplexing)