Adaptive Resource Allocation Scheme for TETRA Networks with Multi-operators

摘要

In this paper, we evaluate various aspects of packet data transmission in terrestrial trunked radio (TETRA) networks giving particular emphasis on the performance of applications transmitting data between a number of radio terminals and a fixed server. The utilization of such applications is constantly increasing in public safety networks and so does the need to dimension and configure TETRA networks to meet their reliability, delay and loss requirements. Without an efficient radio resource management (RRM), one operator can exhaust the capacity of others. This study tackles an efficient scheduling to provide maximum system throughput and proportional fairness in accordance with operator capacity share through adaptive resource allocation scheme. We refer to this new scheme as multi-operators time division generalized processor sharing scheme (M-TDGPS). It employs both adaptive rate allocation to maximize the resource utilization and GPS techniques to provide fair services for each operator. The performance analysis of this scheme is derived using the GPS performance model and compared with the normal static rate M-TDGPS scheme. The simulation results show that the proposed adaptive rate M-TDGPS scheduling scheme improves both system utilization (throughput) and average delays.