Throughput and fairness-balanced resource allocation algorithm in TD-LTE-Advanced relay-enhanced network

Abstract

In Release to ofTD-LTE-Advanced standard, the technique of relay is introduced to extend the network coverage, improve the cell-edge performance and increase the fairness among users. Resource allocation is an important issue in relay-enhanced TD-LTE-Advanced system, and in this paper, a downlink resource allocation algorithm considering direct link, backhaul link and access link is proposed. The proposed algorithm can be divided into two stages, in the first stage, users' requirement based dynamic frequency portioning algorithm is proposed to allocate frequency resources between Macro UEs and Relay UEs properly, and in the second stage, a backhaul link resource allocation algorithm based on the information of user queue is presented to improve the performance of Relay-UEs. Simulation results show that the proposed algorithm can improve system throughput and increase fairness among different users at the same time.

Controlling Interference Structure and Transmit Power of Aerial Small Cells by Hybrid Affinity Propagation Clustering and Reinforcement Learning

“…To measure the fairness in terms of user throughput of the proposed HAPPIER, we adopt the Jain's fairness index [19].…”

Dynamic, fair and coordinated resource allocation for backhaul links for heterogeneous load conditions in LTE-advanced relay systems

“…This paper focuses on backhaul subframes, often hardly treated compared with access subframes, in most works. Resource allocation (RA) in backhaul subframes has been addressed in the literature from different perspectives [3][4][5][6][7][8][9][10]. In [3][4]6] the proposals are based on fixed frequency partition schemes and they focus on strategies to share the available resources among RNs served by the DeNB.…”

“…In [3][4]6] the proposals are based on fixed frequency partition schemes and they focus on strategies to share the available resources among RNs served by the DeNB. In [5][6][7]10] the proposals are focused on computing the resource demands of each relay considering several criteria. In [3][4][5][8][9][10] the RA algorithm distributes the resources between direct and backhaul links.…”

“…In [5][6][7]10] the proposals are focused on computing the resource demands of each relay considering several criteria. In [3][4][5][8][9][10] the RA algorithm distributes the resources between direct and backhaul links. However, in most cases, ICIC is not considered and/or quiet orthogonal frequency assignations among RNs and between backhaul and direct links are exclusively assumed.…”

“…RA in [8][9] includes how to split the resources at DeNB to serve direct and backhaul links, in addition to several QoS scheduling strategies for backhaul links in order to satisfy the QoS constraints of rUEs. In a similar way, in [10], firstly the authors propose a dynamic frequency partitioning algorithm between direct and backhaul links and then, a backhaul link RA algorithm based on user's requirements is proposed, considering the total data buffered at DeNB for each RN.…”