A Hop Count Based Heuristic Routing Protocol for Mobile Delay Tolerant Networks

Table 1

Mathematical notations.

Notation	Meaning
𝑛	The total number of nodes
𝑉	The set of all nodes in the network
𝑀𝑘(𝑠,𝑑)	The message identified by 𝑘 with 𝑠 and 𝑑 being the source and destination node, respectively
hop(𝑖,𝑗)	The average hop count between any pair of nodes 𝑖 and 𝑗
hop(𝑘)	The passed hop count value of message 𝑀𝑘
ℎ(𝑖,𝑗)	The heuristic estimation of the hop count between nodes 𝑖 and 𝑗