Abstract: Sensor network, a new kind of distributed measurement and control system, has been developed rapidly with high rectuirements for openness and interoperability, and standard description of sensor data is becoming a popular research topic. hhe paper presented a kind of sensor data description protocol (SDDP) which was based on SDP (session description protocol). SDDP defined some important parameters of sensors in a text based way,and gave a formalization description for it in ABNF language,which offered convenience for connecting sensors in control-measurement system.Through cooperation with SDP, SDDP protocol can connect networked sensors more effectively. The experiment results indicated that SDDP-SIP has good real-time performance, handiness and openness.

Key words: Sensor networks, SDP, Standards