We propose an adaptive path selection scheme for the throughput improvement in heterogeneous wireless networks with a Frequency Agile AP (FAAP).
FAAPs with multiple radio interfaces and reconfigurable functions can operate as not only APs but also re...
We propose an adaptive path selection scheme for the throughput improvement in heterogeneous wireless networks with a Frequency Agile AP (FAAP).
FAAPs with multiple radio interfaces and reconfigurable functions can operate as not only APs but also relay stations (RSs) between same/different wireless networks. In such heterogeneous networks, MSs with only a single radio interface can connect with other networks via FAAPs and this heterogeneous relaying can yield benefits, such as the coverage extension and the throughput improvement. However these benefits can be achieved by using the heterogeneous relaying path efficiently according to varying network conditions (e.g., link quality, traffic load, etc). Therefore it is necessary to study a scheme for an adaptive path selection which can reflect effects of the time variant network conditions in heterogeneous wireless networks.
Our proposed scheme defines ‘effective transmitted bits per weighted channel’ as a path selection parameter which considers link quality and traffic load. By using this parameter, every MS considers a number of transmitted bits per channel and an amount of remained resources in each network to select a path which can improve the throughput.
We derived the results, including the throughput, a number of users which connect with FAAPs and channel utilization ratio by performing various system-level simulations to analyze the performance of the proposed scheme. And we demonstrated which using the FAAP improves the throughput and integrates various wireless networks efficiently. The proposed scheme which reflects the network conditions is expected to be used as key technologies for the reconfigurable network in next-generation wireless systems.