Improved Capacity Scaling in Wireless Networks With Infrastructure
Won-Yong Shin, Natasha Devroye, Mai H. Vu, Sae-Young Chung, Yong H. Lee, Vahid Tarokh · 2008
This paper analyzes the impact and benefits of infrastructure support in improving the throughput scaling in networks of n randomly located wireless nodes. The infrastructure uses multi-antenna base stations (BSs), in which the number of BSs and the number of antennas at each BS can scale at arbitrary rates relative to n. Two schemes are introduced in this study: a BS-based single-hop routing protocol with multiple-access uplink and broadcast downlink and a BS-based multi-hop routing protocol. Then, the throughput scaling laws of each are analyzed here. These schemes are compared against two conventional schemes without BSs: the multi-hop (MH) transmission and hierarchical cooperation (HC) schemes. It is shown that the BS-based routing schemes do not improve the throughput scaling in dense networks. In contrast, the proposed BS-based routing schemes can, under realistic