DL-GRID: a QoS routing protocol for ad hoc networks

This paper investigates the QoS routing problem in ad hoc networks. The high topology changing characteristic of ad hoc system makes routing extremely unstable. However, stability is an important issue especially for designing a routing with QoS provision. Recently, the availability of small, inexpensive, and low-power GPS receivers realizes the location aware routing for ad hoc networks. Through the help of location information, the routing stability is significantly improved. In this paper, we propose a location aware routing protocol with QoS provision. The proposed scheme, named DL-GRID, considers a dual-layered-grid system configuration to reduce each mobile´s transmission power so as to enhance the bandwidth utilization. Simulation results show that DL-GRID establishes a stable QoS guaranteed route meanwhile saves bandwidth.