5G wireless directional networking based on pattern division multiple access: algorithms, protocols and test-bed
With the development of mobile services, the increase of wireless trac data will lead to higher requirements for the wireless communication networks. As one of the latest promising antenna techniques, multi-beam smart antennas (MBSAs) can achieve concurrent transmissions/receptions in multiple directions/beams. Thus it can significantly improve the network throughput. In this paper, we first describe the framework of our next generation MBSA wireless network. In our network, Pattern division multiple access (PDMA)is used for multi-user communication system, while Dynamic Channel Bonding (DyB) protocol is adopted to optimize the distribution of spectrum resource. Secondly, we present a Riverbed simulator implementation with both routing and medium access control (MAC) protocols for mobile ad-hoc network wireless networks with MBSAs. We describe the simulation models with the implementation of MBSA antenna model in physical layer, MAC layer, and routing layer protocols, all in Riverbed Modeler. Then we compare two routing scenarios, i.e., multi-hop diamond routing scenario and multi-path pipe routing. At last, we will elaborate our design methodology of a testbed for the study of multimedia over cognitive radio networks (CRNs) with directional antennas. We use compressive sensing to sample the wide bandwidth and cyclostationary domain features to detect the band signals. We also propose a Markov decision based spectrum hando control scheme that can switch channels in the proper times.