Game theory based power allocation in LTE air interface virtualization

Network virtualization is considered a promising solution to the gradual ossification of current wireless networks. This paper proposes a two-stage power allocation scheme in LTE air interface virtualization where radio resources are coordinated by a hypervisor among different virtual operators (VOs). In the first stage, VCG auction game is utilized to generate an initial allocation. In the game, VOs are modeled as bidders bidding for power resources on behalf of their users while hypervisor is modeled as the auctioneer. In the second stage, Shapley value in coalition game is introduced to adjust the initial power allocation. The adjustment is made according to users´ rate requirements to guarantee a fair allocation among users of different VOs. Simulation proves our scheme can balance between the energy efficiency and users´ rate requirements compared with two conventional schemes.