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RAN Slicing to Realize Resource Isolation Utilizing Ordinary Radio Resource Management for Network Slicing
Daisuke NOJIMA Yuki KATSUMATA Yoshifumi MORIHIRO Takahiro ASAI Akira YAMADA Shigeru IWASHINA
IEICE TRANSACTIONS on Communications
Publication Date: 2019/03/01
Online ISSN: 1745-1345
Type of Manuscript: Special Section PAPER (Special Section on Network Virtualization and Network Softwarization for Diverse 5G Services)
5G, network slicing, resource isolation, radio resource management,
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In the context of resource isolation for network slicing, this paper introduces two resource allocation methods especially for the radio access network (RAN) part. Both methods can be implemented by slight modification of the ordinary packet scheduling algorithm such as the proportional fairness algorithm, and guarantee resource isolation by limiting the maximum number of resource blocks (RBs) allocated to each slice. Moreover, since both methods flexibly allocate RBs to the entire system bandwidth, there are cases in which the throughput performance is improved compared to when the system bandwidth is divided in a static manner, especially in a frequency selective channel environment. Numerical results show the superiority of these methods to dividing simply the system bandwidth in a static manner, and show the difference between the features of the methods in terms of the throughput performance of each slice.