On Distributed CAC and DCA in Multi-hop 4G Wireless Networks

Recently, we developed a framework, namely Multi-hop TDD CAC and DCA (MTCD), for optimal centralized DCA in multi-hop 4G/4G+ UTRA TDD networks. We also proposed two CAC schemes that use a pre-defined optimization algorithm to ensure that admission is based, to a large extent, on topology maintenance, energy conservation, load balancing, and fairness. In this paper, we address the centralized limitation of MTCD and its computational intractability by proposing a new distributed DCA scheme for autonomous, multi-hop 4G/4G+ networks. The proposed algorithm is termed Distributed Multi-hop CAC and DCA (DMCD). Unlike MTCD, DMCD allocates channels in a fully distributed manner. We also propose Distributed Per-Hop Throughput-Based CAC (DPTC), which facilitates the gradual admission of the wireless stations pertaining to an A-Cell route in conjunction with DCA using DMCD.