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In a beyond-5G (B5G) scenario, we consider a virtual private mobile network(VPMN), i.e., a set of user equipments (UEs) directly communicating in adevice-to-device (D2D) fashion, and connected to the cellular network bymultiple gateways. The purpose of the VPMN is to hide the position of the VPMNUEs to the mobile network operator (MNO). We investigate the design andperformance of packet routing inside the VPMN. First, we note that the routingthat maximizes the rate between the VPMN and the cellular network leads to anunbalanced use of the gateways by each UE. In turn, this reveals information onthe location of the VPMN UEs. Therefore, we derive a routing algorithm thatmaximizes the VPMN rate, while imposing for each UE the same data rate at eachgateway, thus hiding the location of the UE. We compare the performance of theresulting solution, assessing the location privacy achieved by the VPMN, andconsidering both the case of single hop and multihop in the transmissions fromthe UEs to the gateways.

Virtual Private Mobile Network with Multiple Gateways for B5G Location Privacy