Resource Allocation Optimization for Delay-Sensitive Traffic in Fronthaul Constrained Cloud Radio Access Networks

Provided by: Institute of Electrical & Electronic Engineers
Topic: Cloud
Format: PDF
The Cloud Radio Access Network (C-RAN) provides high spectral and energy efficiency performances, low expenditures and intelligent centralized system structures to operators, which has attracted intense interests in both academia and industry. In this paper, a Hybrid Coordinated Multi-Point transmission (H-CoMP) scheme is designed for the downlink transmission in C-RANs, which fulfills the flexible tradeoff between cooperation gain and fronthaul consumption. The queue-aware power and rate allocation with constraints of average fronthaul consumption for the delay-sensitive traffic are formulated as an infinite horizon constrained Partially Observed Markov Decision Process (POMDP), which takes both the urgent Queue State Information (QSI) and the imperfect Channel State Information at Transmitters (CSIT) into account.

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