An On-demand Dual-Channel Routing Scheme in Ad Hoc Networks
Qing Wang · 2006
Based on a single channel multipath routing scheme, an on-demand routing scheme called Dual- Channel Routing(DCR)scheme is proposed in this paper. The scheme establishes and utilizes two routes of maximally disjoint paths and distributes them into two different channels respectively. Here, “channel” is used upon a logical level. Physically, a channel can be a frequency band(under FDMA), or an orthogonal code(under CDMA). Then, there is no interference between two routes. A per-packet allocation scheme is used to distribute data packets into two channels of active sessions in our scheme. Even if only one of the two routes of the session is invalidated, the source uses the remaining valid route to deliver data packets in two channels alternately. This traffic distribution efficiently utilizes available network resources and prevents nodes of the route from being congested in heavily loaded traffic situations. The results of simulation show that our scheme has better network performance.