Upper Delay Bound Research about LR-PANs Network Based on Network Calculus

IEEE Std 802.15.4, as an widespread wireless network standard, defines the protocol and compatible interconnection for data communication devices using low-power and low-complexity short-range radio frequency (RF) transmissions in a wireless personal area network (WPAN). It presents the advantage to fit different requirements of potential applications by adequately setting its parameters. For time critical applications, the protocol can provide timeliness guarantees by using its Guaranteed Time Slot (GTS) mechanism in beacon-enabled mode. Deterministic performance evaluation methods are inevitable for the validation of systems that must guarantee hard delay bounds and timeliness of information processing. One recent deterministic modeling approach is Network Calculus, which allows determining worst case transmission times. Based on GTS allocation mechanism, we generate appropriate modeling elements for the Network Calculus as arrival curves and service curves. The results of this work may pave the way for a time efficient management of the GTS mechanism in an IEEE 802.15.4-based network.