Title
Efficient Joint User Association and Resource Allocation for Cloud Radio Access Networks.
Abstract
Coordinated scheduling is an efficient resource allocation technique employed to improve the throughput, utilization, and energy efficiency of radio networks. This work focuses on the coordinated scheduling problem for cloud radio access network (CRAN). In particular, we consider the downlink of a CRAN where a central cloud performs the scheduling and synchronization of transmitting frames across the base stations (BSs). For each BS, the transmit frame is composed of several time/frequency slots called resource blocks (RBs). We formulate an optimization problem for joint users to BS association and resource allocation with an objective to maximize the overall network utilization under practical network constraints. The formulated problem is combinatorial and an optimal solution of such a problem can be obtained by performing an exhaustive search over all possible users-to-BSs assignments that satisfy the network constraints. However, the size of search space increases exponentially with the number of users, BSs, and RBs, thus making this approach prohibitive for networks of practical size. This work proposes an interference-aware greedy heuristic algorithm for the constrained coordinated scheduling problem. The complexity analysis of the proposed heuristic is also presented and performance is compared with the optimal exhaustive search algorithm. Simulation results are presented for various network scenarios which demonstrate that the proposed solution achieves performance comparable to the optimal exhaustive search algorithm.
Year
DOI
Venue
2017
10.1109/ACCESS.2017.2663758
IEEE ACCESS
Field
DocType
Volume
Job shop scheduling,Fair-share scheduling,Computer science,Computer network,Nurse scheduling problem,Greedy algorithm,Resource allocation,Genetic algorithm scheduling,Dynamic priority scheduling,Round-robin scheduling,Distributed computing
Journal
5
ISSN
Citations 
PageRank 
2169-3536
3
0.38
References 
Authors
11
7
Name
Order
Citations
PageRank
Muhammad Awais Azam117824.45
Ashfaq Ahmed2348.91
Muhammad Naeem348874.69
Muhammad Iqbal4113.21
Waleed Ejaz527834.18
Alagan Anpalagan61263125.52
Hyung Seok Kim754456.03