- The highly dynamic and uncertain character of mobile ad-hoc networks poses significant challenges for group management.
- Node mobility often changes the multicast tree, and therefore, frequent updates from group members are required to refresh the multicast tree at the source node.
- This paper presents Courier, a group communications algorithm that uses the location and velocity of roaming nodes to provide bandwidth efficient multicast between a source and its destinations (i.e., group members) in location aware mobile environments.
- Toward that end, Courier offers (1) a bandwidth efficient method for location updates from group members, (2) a mobility prediction model for predicting the movement of mobile group members, and (3) an overlay multicast data distribution tree (OMDDT) construction algorithm that is guided by the mobility prediction model.
- Comparisons of Courier to related multicast algorithms indicate an increase in data transmission success and a decrease in overall bandwidth consumption.
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