Dynamic Slot Allocation Scheme in Tactical Multi-hop Networks for Future Soldier Systems

Abstract

In this paper, we propose a dynamic slot allocation scheme to improve the slot utilization rate in tactical multi-hop networks in which the channel condition varies due to node movements. The proposed scheme takes advantage of the fact that nodes that are more than three hops apart can use the same slot simultaneously. The frame is divided into two parts: the control period and the data period. To know the available slot information within two-hop distance, the node exchanges a slot allocation information with one-hop neighbors during the control period. The node can get the information on idle slots that are not used within two-hop distance but assigned already to other nodes that are more than three-hop away. The identified idle slot can be used by the node, which increases the slot utilization rate. The performance analysis results of the proposed scheme show that it increases the slot utilization rate sufficiently despite the overhead of the control period in the multi-hop networks of the future soldier system. Keywords: ìŠ¬ë¡¯í• ë‹¹, ë™ì ì‹œë¶„í• ë‹¤ì¤‘ì ‘ì†, ì „ìˆ ë‹¤ì¤‘í™‰ 네트워크, ë§¤ì²´ì ‘ê·¼í†µì œ, ê°œì¸ì „íˆ¬ì²´ê³„ Keywords: Slot Allocation, Dynamic TDMA, Tactical Multi-hop Networks, MAC, Future Soldier System