This paper considers uplink transmission in next generation orthogonal frequency division multiple access(OFDMA) virtualized radio access networks(RANs) in which remote radio heads are distributed and connected to a base-band unit(BBU) pool through fronthaul links. To maximize the system sum rate with limited fronthaul capacity and BBU pool computation capacity, a joint design of sub-carrier allocation and power allocation is investigated. By utilizing the dynamic programming method and Lagrange dual decomposition method, a novel resource allocation algorithm is proposed to improve the system sum rate. Simulation results show that the proposed algorithm achieves efficient resource sharing among remote radio heads(RRHs) than the benchmark algorithm. In a word, this paper provides another way to satisfy the restrictions of the fronthaul capacity and the BBU pool computation capacity in OFDMA virtualized RAN systems.
Resource Allocation Optimization for Next Generation RANs with Limited Fronthaul Capacity and BBU Pool Computation Capacity
01.06.2022
538467 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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