On the number of rounds necessary to disseminate information
SPAA '89 Proceedings of the first annual ACM symposium on Parallel algorithms and architectures
A trade-off between information and communication in broadcast protocols
Journal of the ACM (JACM)
Fast gossiping for the hypercube
SIAM Journal on Computing
SIAM Journal on Computing
Locality in distributed graph algorithms
SIAM Journal on Computing
Journal of Computer and System Sciences
Methods and problems of communication in usual networks
Proceedings of the international workshop on Broadcasting and gossiping 1990
Fault-local distributed mending (extended abstract)
Proceedings of the fourteenth annual ACM symposium on Principles of distributed computing
Exploring unknown environments
STOC '97 Proceedings of the twenty-ninth annual ACM symposium on Theory of computing
Broadcasting with a bounded fraction of faulty nodes
Journal of Parallel and Distributed Computing
Exploring unknown undirected graphs
Journal of Algorithms
Deterministic broadcasting in unknown radio networks
SODA '00 Proceedings of the eleventh annual ACM-SIAM symposium on Discrete algorithms
Distributed online frequency assignment in cellular networks
Journal of Algorithms
Faster broadcasting in unknown radio networks
Information Processing Letters
Assigning labels in an unknown anonymous network with a leader
Distributed Computing
The Impact of Knowledge on Broadcasting Time in Radio Networks
ESA '99 Proceedings of the 7th Annual European Symposium on Algorithms
Fast broadcasting and gossiping in radio networks
FOCS '00 Proceedings of the 41st Annual Symposium on Foundations of Computer Science
Messy broadcasting - Decentralized broadcast schemes with limited knowledge
Discrete Applied Mathematics
Hi-index | 5.23 |
We consider the time of deterministic broadcasting in networks whose nodes have limited knowledge of network topology. Each node υ knows only the part of the network within knowledge radius r from it, i.e., it knows the graph induced by all nodes at distance at most r from υ. Apart from that, each node knows the maximum degree Δ of the network. One node of the network, called the source, has a message which has to reach all other nodes. We adopt the widely studied communication model called the one-way model in which, in every round, each node can communicate with at most one neighbor, and in each pair of nodes communicating in a given round, one can only send a message while the other can only receive it. This is the weakest of all store-and-forward models for point-to-point networks, and hence our algorithms work for other models as well, in at most the same time.We show trade-offs between knowledge radius and time of deterministic broadcasting, when the knowledge radius is small, i.e., when nodes are only aware of their close vicinity. While for knowledge radius 0, minimum broadcasting time is Θ(e), where e is the number of edges in the network, broadcasting can be usually completed faster for positive knowledge radius. Our main results concern knowledge radius 1. We develop fast broadcasting algorithms and analyze their execution time. We also prove lower bounds on broadcasting time, showing that our algorithms are close to optimal.