A packet scheduling strategy in sensor networks with SGMH protocol

Data communication in sensor networks can have timing constraints like end to end deadlines. If the deadlines are not met either a catastrophe can happen in hard real time systems or performance deterioration can occur in soft real time systems. In real time sensor networks, the recovery of data through retransmission should be minimized due to the stringent requirements on the worst case time delays. This paper presents the application of Stop and Go Multihop protocol (SGMH) at node level in wireless sensor networks for scheduling and hence to meet the hard real time routing requirements. SGMH is a distributed multihop packet delivery algorithm. The fractions of the total available bandwidth on each channel is assigned to several traffic classes by which the time it takes to traverse each of the hops from the source to the destination is bounded. It is based on the notion of time frames (Tfr). In sensor networks packets can have different delay guarantees. Multiple frame sizes can be assigned for different traffic classes.

[1]  S. Jamaloddin Golestani,et al.  A Framing Strategy for Congestion Management , 1991, IEEE J. Sel. Areas Commun..

[2]  Choong Seon Hong,et al.  A QoS Adaptive Congestion Control in Wireless Sensor Network , 2008, 2008 10th International Conference on Advanced Communication Technology.

[3]  Ki-Il Kim,et al.  Reliable and real-time data dissemination in wireless sensor networks , 2008, MILCOM 2008 - 2008 IEEE Military Communications Conference.

[4]  Zongkai Yang,et al.  A Real-time Routing Protocol with Constrained Equivalent Delay in Sensor Networks , 2006, 11th IEEE Symposium on Computers and Communications (ISCC'06).

[5]  Chenyang Lu,et al.  RAP: a real-time communication architecture for large-scale wireless sensor networks , 2002, Proceedings. Eighth IEEE Real-Time and Embedded Technology and Applications Symposium.

[6]  T. Qureshi,et al.  Proposition and Simulation of a Network Layer based Hard Real Time Protocol for Wireless Sensor Networks , 2007, 2007 16th IST Mobile and Wireless Communications Summit.

[7]  I. Memon,et al.  Real Time Traffic Support in Wireless Sensor Networks , 2005, 2005 Student Conference on Engineering Sciences and Technology.

[8]  Chenyang Lu,et al.  SPEED: a stateless protocol for real-time communication in sensor networks , 2003, 23rd International Conference on Distributed Computing Systems, 2003. Proceedings..