6533b871fe1ef96bd12d1a92

RESEARCH PRODUCT

Energy Efficient Resource Allocation and User Scheduling for Collaborative Mobile Clouds with Hybrid Receivers

Zheng ChangJie GongTapani RistaniemiZhisheng Niu

subject

Computer Science - Networking and Internet ArchitectureNetworking and Internet Architecture (cs.NI)FOS: Computer and information sciencescollaborative mobile cloudscontent distributiongreen communicationsuser schedulingsubchannel allocationresursointipower allocationuser cooperation

description

In this paper, we study the resource allocation and user scheduling algorithm for minimizing the energy cost of data transmission in the context of OFDMA collaborative mobile cloud (CMC) with simultaneous wireless information and power transfer (SWIPT) receivers. The CMC, which consists of several collaborating MTs offers one potential solution for downlink content distribution and for the energy consumption reduction at the terminal side. Meanwhile, as RF signal can carry both information and energy simultaneously, the induced SWIPT has gained much attention for energy efficiency design of mobile nodes. Previous work on the design of CMC system mainly focused on the cloud formulation or energy efficiency investigation, while how to allocate the radio resource and schedule user transmission lacks attention. With the objective to minimize the system energy consumption, an optimization problem which jointly considers subchannel assignment, power allocation and user scheduling for a group of SWIPT receivers has been presented. The formulated problem is addressed through the convex optimization technique. Simulation results demonstrate that the proposed user scheduling and resource allocation algorithms can achieve significant energy saving performance.

yearjournalcountryeditionlanguage
2014-10-01
https://dx.doi.org/10.48550/arxiv.1410.0128