A novel resource allocation in imperfect D2D cooperation in LTE-Advanced Pro systems

The increasing demand on higher transmission speed and lower latency has become popular in 5G related researches. Cooperation is one possible solution to enhance system performance. In this work, we focus on the problem of enhancing the performance of cooperative among mobile terminals under the constraint of cooperative link capacity. Different from traditional researches, we consider the scenario that multiple mobile terminals are working in cooperative mode and the capacity of the link to perform cooperation is limited, which will limit the performance of cooperation. First of all, we establish the scenario and mathematical modeling of the imperfect cooperation among terminals, then we propose a novel sub-optimal centralized method to tackle the problem. A system level simulation result has been given at the end of our manuscript. The result indicates that, the capacity constraint cooperative link will greatly limit the performance of cooperation, by adopting our proposed method, about 7% performance gain could be obtained on average.