Principles of mobile communication (2nd ed.)
Principles of mobile communication (2nd ed.)
Mobility increases the capacity of ad hoc wireless networks
IEEE/ACM Transactions on Networking (TON)
Throughput-coverage tradeoff in a scalable wireless mesh network
Journal of Parallel and Distributed Computing
Uplink capacity and interference avoidance for two-tier femtocell networks
IEEE Transactions on Wireless Communications
The future of WiMAX: multihop relaying with IEEE 802.16j
IEEE Communications Magazine
IEEE 802.16J relay-based wireless access networks: an overview
IEEE Wireless Communications
Performance of cellular networks with relays and centralized scheduling
IEEE Transactions on Wireless Communications
Relay-based deployment concepts for wireless and mobile broadband radio
IEEE Communications Magazine
Capacity and QoS for a Scalable Ring-Based Wireless Mesh Network
IEEE Journal on Selected Areas in Communications
Review: A survey on interference management techniques in femtocell self-organizing networks
Journal of Network and Computer Applications
Wireless Personal Communications: An International Journal
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Relay stations are usually used to enhance the signal strength for the users near cell boundary, thereby extending the cell coverage. However, transmission through a relay station needs two transmission phases. The first phase is from base station to relay station, and the second one is from relay station to mobile station. Thus, using relay station may decrease system capacity due to two-phase transmission time. As a result, whether or not data are transmitted by one-hop or two-hop phases should be determined according to both signal strength and throughput. In this paper, we investigate the optimal relay location aiming to maximize system capacity. We consider two relay selection rules for determining whether two-hop transmission will be used: signal strength-oriented and throughput-oriented selection rules. We find that the signal strength-oriented two-hop transmission may yield even lower system capacity than the one-hop transmission. In the throughput-oriented scheme, the two-hop transmission can achieve higher system capacity than the one-hop transmission. By simulations, we determine the optimal relay location and show the coverage enhancement by the relaying network. Extensive simulations are performed to investigate the impacts of relay transmission power and the number of relay stations on system capacity and optimal relay location. The simulation results reveal important insights into designing a relaying network with high system capacity.