LASER: A load-aware spectral-efficient routing metric for path selection in IEEE 802.16j multi-hop relay networks

Energy Efficient Evolved Node Base Station and Relay Station Placement Scheme for Green Cellular Networks

“…The capacity of the RS is limited compared to the eNB. The network imbalance issue rises whenever there is a non-uniform traffic demand from RSs [14]. This leads to a disappointing network throughput.…”

“…Increase in the number of indirect transmissions may prompt the transmission delay and loss in system throughput [11][12][13]. Improper placements will also lead to path selection issue, which reduces the system quality if left uncared [14,15]. 3GPP LTE-A, IEEE 802.16j and IEEE 802.16m standards failed to give suitable mechanism for eNB and RS placement.…”

“…It embraces the idea of TO selection rule, which was initially proposed by J. H. Huang [12]. It has been proved that TO based selection rule, offers [14]. Improper path determination may prompt loss in system throughput and energy efficiency and increase in transmission delay [4].…”

“…Only a few works discusses the neediness of eNB and RS placement together [13,14,16]. H. C. Lu and W. Liao [13] proposed a joint BS and RS placement (JBRP) scheme for IEEE 802.16j networks.…”

“…A large number of the path determination schemes proposed in the literature have not considered the network imbalance issue. S. S. Wang [14] proposed a LASER scheme, which uses link spectral efficiency as the path determination metric and proved to offer better performance even under network imbalance conditions. Hence, our proposed scheme additionally adopts LASER based path determination to address the network imbalance issue.…”