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Title: Multi-operator mobile relaying: Shared-spectrum allocation
Authors: MIMURA, Tomohiko
YAMAMOTO, Koji  kyouindb  KAKEN_id
MORIKURA, Masahiro  kyouindb  KAKEN_id
IWATA, Ayako
NISHIO, Akihiko
Keywords: multi-operator
mobile relaying
bargaining game
Issue Date: Jun-2013
Publisher: Institute of Electronics, Information and Communication Engineers(IEICE)
Journal title: IEICE Transactions on Communications
Volume: E96-B
Issue: 6
Start page: 1377
End page: 1384
Abstract: In this paper, we introduce the concept of a multi-operator mobile relay node (RN) for cellular networks on buses or trains. The installation of RNs improves spectral efficiency because an antenna with a higher gain than that of user equipment (UE) can be installed in an RN. However, installing different RNs for different operators is not efficient because of the large amount of space needed to install multiple RNs in a bus. Thus, sharing one RN among multiple operators is a more practical approach. When we use a multi-operator mobile RN, the required amount of resource for each operator varies independently as the RN moves. Consequently, we propose a system of shared-spectrum allocation among operators for RN-UEs communication. Shared bandwidth can be allocated to operators according to link quality in order to achieve effective utilization of radio resources. However, to introduce shared-spectrum allocation, fairness among the operators and the total efficiency of the system should be taken into consideration. Using computer simulations, we evaluate shared-spectrum allocation based on the Nash bargaining solution (NBS). The results, in terms of both fairness and efficiency, indicate that total throughput can be improved by approximately 20% compared with the situation where multiple operators install different RNs individually.
Rights: © 2013 The Institute of Electronics, Information and Communication Engineers
DOI(Published Version): 10.1587/transcom.E96.B.1377
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