In this paper,we propose an interference management scheme for device-to-device(D2D)communications in cellular networks.Considering the underlay D2D communications,the signal quality of cellular users would be affecte...In this paper,we propose an interference management scheme for device-to-device(D2D)communications in cellular networks.Considering the underlay D2D communications,the signal quality of cellular users would be affected by D2D users.To solve this problem,we explore the application of network coding and relay-assistance to mitigate interference.In the proposed scheme,helper nodes overhear the signal from cellular users,encode the received packets,and send the encoded packets to the base station.We design the helper node selection scheme and the transmission policy of helper nodes.The performance of the proposed scheme for different positions of the cellular user and D2D users is then evaluated.The results suggest that the cellular transmission scheme should be adjusted dynamically when underlay D2D communications are active.Compared with the existing solutions,the proposed scheme can effectively increase system throughput.展开更多
From an end-to-end performance perspective,a multi-agent-based cognitive resource management(MA-CRM) framework is proposed in this article.More importantly,we introduce a novel concept of resource flow(RF) as integrat...From an end-to-end performance perspective,a multi-agent-based cognitive resource management(MA-CRM) framework is proposed in this article.More importantly,we introduce a novel concept of resource flow(RF) as integrated CRM in a multi-dimensional environment scenario.We concentrate on the autonomous CRM framework in cognitive radio(CR) networks.Specifically,we first summarize the necessity of the novel concept for implementing intelligent and autonomous resource management considering both the requirements of various types of resource and the unified framework of the CRM scheme.Then,we introduce the concept of RF,including the technical aspects,purpose,classification,and description.Finally,we give a use case of RF for autonomous CRM,where the optimal RF is achieved to guarantee the resource-imbalanced requests of different service traffic flows.展开更多
基金supported in part by the National Natural Science Foundation of China(Grant Nos.61571351 and 61231008)ZTE Industry-Academia-Research Cooperation Funds
文摘In this paper,we propose an interference management scheme for device-to-device(D2D)communications in cellular networks.Considering the underlay D2D communications,the signal quality of cellular users would be affected by D2D users.To solve this problem,we explore the application of network coding and relay-assistance to mitigate interference.In the proposed scheme,helper nodes overhear the signal from cellular users,encode the received packets,and send the encoded packets to the base station.We design the helper node selection scheme and the transmission policy of helper nodes.The performance of the proposed scheme for different positions of the cellular user and D2D users is then evaluated.The results suggest that the cellular transmission scheme should be adjusted dynamically when underlay D2D communications are active.Compared with the existing solutions,the proposed scheme can effectively increase system throughput.
基金supported by the National Basic Research Program of China(2009CB320400)the Program for Changjiang Scholars and Innovative Research Teams in Universities,National High Technology Research and Development Program of China(2007AA01Z288)+2 种基金the National Natural Science Foundation of China(60572146,60902032,60902033 and 60972047)Natural Science Basic Research Plan in Shaanxi Province of China(2012JQ8012)the Program of Introducing Talents of Discipline to Universities(B08038)
文摘From an end-to-end performance perspective,a multi-agent-based cognitive resource management(MA-CRM) framework is proposed in this article.More importantly,we introduce a novel concept of resource flow(RF) as integrated CRM in a multi-dimensional environment scenario.We concentrate on the autonomous CRM framework in cognitive radio(CR) networks.Specifically,we first summarize the necessity of the novel concept for implementing intelligent and autonomous resource management considering both the requirements of various types of resource and the unified framework of the CRM scheme.Then,we introduce the concept of RF,including the technical aspects,purpose,classification,and description.Finally,we give a use case of RF for autonomous CRM,where the optimal RF is achieved to guarantee the resource-imbalanced requests of different service traffic flows.
