Icar: an integrated cellular and ad hoc relaying system
Hongyi Wu, Chunming Qiao · 2002
The cellular concept was introduced for wireless communication to address the problem of having scarce frequency resource. It is based on the sub-division of geographical area to be covered by the network into a number of smaller areas called cells. Frequency reuse in the cells far away from each other increases system's capacity. But at the same time, the cell boundaries prevent the channel resource of a system to be fully available for users. No access to Data Channels (or DCHs) in other cell by the mobile host (or MH) limits the channel efficiency and consequently the system capacity.