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In this paper, we facilitate device-to-device (D2D) communications to provide relay assistance to cell-edge user equipments (UEs) with the objective of improving system throughput. We first formulate a joint problem of relay node selection which helps cell-edge UEs find the proper relay nodes, as well as spectrum allocation for D2D links to maximize the system throughput with interference constraints...
Load balancing (LB) plays a key role in improving the performance of hybrid Geostationary Orbit (GEO)-Low Earth Orbit (LEO) satellite network. Overload is very common in LEO satellite due to the non-uniform distribution load and the periodic satellite motion. A feasible approach to realize load balancing is that the terminals (destination nodes) served by LEO satellite hand over to GEO satellite....
Mobility load balancing (MLB) is an effective method employed by 3GPP to transfer traffic from a hot-spot cell to neighbouring cells. This paper designs a cooperative mobility load balancing (CMLB) scheme in relay cellular networks. After partner cell selection, in the traffic shifting stage, the partner cell analyses hot-spot cell's traffic shifting request and the idle spectrum of relay station...
We propose a Stackelberg game based cooperative user relay assisted load balancing (LB) scheme to tackle SNR degradation problem of shifted cell-edge users which commonly occurs in a conventional direct handover LB scheme. In the proposed scheme, users from a lightly loaded cell can be selected as cooperative user-relays and will be paid by the shifted cell-edge users. Stackelberg game theory is applied...
The optimum power allocation of the one-side interference channel with the non-cognitive relay node was studied. Assuming the orthogonal resources were used on the channels between the sources and relay node, we first derived a transmission scheme based on the dirty paper coding and the interference cancellation. Then with this transmission scheme the rates that was achievable in both the weak and...
Power saving is an important issue in wireless networks. This paper proposed an energy-efficient cooperative relay selection scheme that utilized the transmission power more efficiently in cooperative relaying systems. The nodes in the network were deployed with multiple antennas and the decode-and-forward relaying protocol was used. The optimization problem of energy efficiency in cooperative relaying...
A self-organizing load balancing framework is proposed in this paper. It provides self-optimizing load balancing policies to improve adaptation and robustness of Fixed Relay Station (FRS) based cellular networks. The framework proposes a Self-organizing Cooperative Partner Cluster (SCPC) concept to dynamically select optimal partners of each BS and RS. A novel Comprehensive Load Balancing Policy Stack...
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