Interference coordination and performance enhancement for shared relay networks in LTE-Advanced systems

SFR-based vs. FFR-based inter-cell interference coordination for inband relay LTE-A networks

“…It is also important to take into account the different interference conditions during access and backhaul subframes. Resource allocation (RA) for relay enhanced cellular systems has been widely studied [3][4][5][6][7][8][9][10][11]. A number of approaches for access subframes are based on the assumption that from the DeNB and its associated RNs perspective, the objective is to allocate resources statically or dynamically, in such a way that interfering links become orthogonal [3][4][7][8].…”

“…However, in many cases [3][4], the backhaul link overhead is not considered in system level evaluations. In [5][6][7][8][9][10], SFRbased ICIC schemes are proposed, but in [5][6][7] only for backhaul subframes. In [8], the outer subband of each DeNB is reserved for its RNs, whereas in [9], RNs use the outer subband of one adjacent macrocell, so they reuse a portion of the inner subband of their DeNB with a low control over interference.…”

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.…”

“…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 [5][6][7]10] the proposals are focused on computing the resource demands of each relay considering several criteria.…”

“…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.…”