Joint Routing and Re-routing Control in Two-hop Cellular Relaying System

Relay is emerged recently as a promising solution not only to improve coverage but also end-to-end date rate. How to manage the radio resources effectively for the integrated cellular network are the key issues to be studied. The paper re-evaluates the traditional concept of adjustment and optimization for the call routing and congestion control as call routing and admission control (CRAC). With respect to the mobility and the variable wireless environment, the call re-routing algorithm which implements the intelligence and adaptability is also studied as call re-routing control (CRRC). The joint routing and re-routing control (JoRR) algorithm is proposed to realizes the global optimization of the existing algorithms two schemes, namely centralized architecture (CA) and decentralized architecture (DA), are studied to implement the JoRR algorithm whose criterion is selected by considering the characteristics of the integrated cellular system and the tradeoff between the cost and the effectivity. At last, a set of system-level performance evaluation is provided based on the characteristics of the new network architecture