Resource reservation mechanisms for distributed multi-path quality of service routing

This paper studies resource reservation mechanisms that can be incorporated into distributed multi-path quality of service (QoS) routing algorithms. Three resource reservation schemes, the forward reservation scheme, the backward reservation scheme and the hybrid reservation scheme, are investigated. Simulations are carried out to compare the performance of the protocols and to study the impact of system parameters on the performance of the protocols. Our results show that, in most of the cases, backward reservation protocols are more efficient than their forward reservation and hybrid reservation counterparts.