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The traffic of the base station can be offloaded by content sharing through device-to-device (D2D) communications if popular on-demand contents have been cached in user devices. In D2D content sharing, the receiving user gains benefit by obtaining contents while the transmitting user has to consume the transmission energy. However, users are selfish and have no obligation to help others. To motivate...
The increasing demand of mobile applications creates challenges for mobile devices on energy consumption and data usage. As a solution, device-to-device communication can serve as a powerful paradigm in future cellular networks to enable local cooperation of mobile devices. By leveraging social awareness, users can share surplus communication and computation resources on their mobile devices to stimulate...
Device-to-device (D2D) communication is known as a promising way to cope with the growing mobile video traffic, which may suffer from the short duration caused by the limited energy supply. In this paper, we propose a practical D2D cooperation framework based on distributed optimization to extend the video transmission duration. In the multi-path multi-hop D2D communication scenario, we effectively...
Clustering process optimized by particle swarm optimizer makes for topology control and energy conservation in wireless sensor networks. The particle fitness is defined as its neighborpsilas information including location and residual energy, a novel distributed clustering approach based on discrete particle swarm optimization (DPSO) for single-hop routing protocol is developed, named as DPSOCA. The...
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