5G NSA Radio Access Network Sharing for Mobile Operators : Design, realization and field trial

摘要

Recently, Mobile Operators shift to 5G non-Standalone (NSA) network, through which fast 5G deployment is easily realized, and tend to share radio access network (RAN), so as to reduce capital as well as operational expenditure. In this paper, we choose the design of 5G NSA of single anchor, using the option of "LTE eNB as MORAN and NR gNB with MOCN" for RAN infrastructure sharing. In order to adapt the NSA network to our current network, and to ensure data transmission continuity, interoperation in multi-band networking is considered and realized by means of differentiated network selection, frequency priority configuration, and parameter configuration. A field trial is designed to verify the feasibility of the NSA network for RAN sharing, the results of which have shown: the interoperation in multi-band performs as expected, and apart from the high throughput, the NSA network has no negative impact on current LTE network, so it is suitable for the whole network construction.