Totem: a fault-tolerant multicast group communication system
Communications of the ACM
Fault-tolerant broadcasts and related problems
Distributed systems (2nd Ed.)
ACM Transactions on Computer Systems (TOCS)
RMP: Fault-Tolerant Group Communication
IEEE Micro
Real-Time Communication in Autonomous Robot Systems
ISADS '99 Proceedings of the The Fourth International Symposium on Autonomous Decentralized Systems
Reliable Computing Over Mobile Networks
FTDCS '95 Proceedings of the 5th IEEE Workshop on Future Trends of Distributed Computing Systems
Lower bounds for the broadcast problem in mobile radio networks
Distributed Computing
Model-based analysis of a protocol for reliable communication in railway worksites
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
| Hi-index | 0.00 |
We consider teams of mobile autonomous robot systems that coordinate their work via communication over a wireless local area network. In such a scenario, timely delivery and group support are the predominant requirements on the communication protocol. As the mobile robot systems are communicating via standard hardware, we base our work on the IEEE 802.11 standard for wireless local area networks. In this paper, we present a reliable real-time group communication protocol that enhances the IEEE 802.11 standard. The reliability and real-time properties of the protocol are based on time-bounded dynamic time redundancy. By this, network bandwidth is used much more efficiently than in a message diffusion approach based on static redundancy. The fault detection mechanism needed to implement the time-bounded dynamic redundancy concept is achieved by an implicit acknowledgement scheme that consumes no additional bandwidth for acknowledgement messages.