By Design World
IEEE has published specification IEEE 802.15.4-2006, which defines the physical layer (PHY) and medium access control (MAC) sub-layer specifications for low-data-rate wireless connection with fixed, portable, and moving devices with no, or very limited battery and energy consumption requirements, and operating within a 10 m range. Depending on the application, a longer range with lower data rate may be an acceptable tradeoff.
This specification documents specific enhancements and corrections to IEEE Standard 802.15.4, all of which will be backwards compatible with IEEE Standard 802.15.4-2003. These include resolving ambiguities, reducing unnecessary complexity, increasing flexibility in security key usage, and considerations for newly available frequency allocations.
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