Self-adaptive inter-cell interference coordination scheme for LTE systems

A decentralized inter-cell interference coordination scheme using multi-objective optimization

“…Since the work presented in [6] demonstrated that HS performs better than most existing schemes (e.g., Reuse-1, Reuse-3, PFR, SFR), we focus in this section on reviewing the schemes proposed in [6] and [11].…”

“…In [6], a dynamic decentralized ICIC scheme based on the concept of Harmony Search (HS) is proposed. The proposed HS scheme can be deployed in the LTE flat network architecture.…”

“…As in [6], achieving fast adaptation to the varying channel conditions requires minimizing the data exchange between eNBs [6]. We adapt a modified version of the data exchange strategy presented in [11].…”

“…Otherwise H(x) = 0. is the received power by the user from the neighbouring cell and is the received power by the user from the cell. Smaller weights indicate that the serving cell would be least affected by interference from the other cell [6]. Then we calculate the average weights of both the serving cell and neighboring cell to reflect the effect of the serving cell interference and neighboring cell interference on each other's UE.…”

“…In particular, we propose a decentralized Multi-Objective Harmony Search (MO-HS) scheme. Unlike the single best solution obtained by using the conventional single-objective HS scheme proposed in [6], the MO-HS provides a set of solutions (known as the Pareto set) that can be further analyzed as each solution satisfies the objectives at an acceptable level without being dominated by any other solution [7]. This leads to enhanced results in term of overall system throughput, edge user rates and power consumption.…”