具有小区激活、用户关联和干扰协调的异构网络中的能量管理
Energy Management in Heterogeneous Networks with Cell Activation, User Association and Interference Coordination
摘要：
无线网络的密集化和扩展对干扰管理和降低能耗提出了新的挑战。本文研究了异构网络中的能量有效的资源管理，根据长期的平均流量和信道条件，通过联合优化小区激活，用户关联和多小区多用户信道分配。所提出的框架是建立在通过预定义的干扰模式来表征干扰耦合的基础上，并且在这些模式之间执行资源分配。以这种方式，当计算用户可实现速率时，明确地考虑由激活（去激活）小区引起的干扰波动。一个定制的算法开发，以解决制定的问题，在对偶域中利用的问题结构，这给了一个显着的复杂性节省。数值结果表明，所提出的方案在节能方面取得了巨大的进步。从所提出的联合资源优化导出的用户关联被映射到符合标准的小区选择偏置。该映射揭示了用于节能的小区特定偏置与文献中研究的用于负载均衡的小区特定偏置完全不同。
英文摘要：
The densification and expansion of wireless network pose new challenges on interference management and reducing energy consumption. This paper studies energy-efficient resource management in heterogeneous networks by jointly optimizing cell activation, user association and multicell multiuser channel assignment, according to the long-term average traffic and channel conditions. The proposed framework is built on characterizing the interference coupling by pre-defined interference patterns, and performing resource allocation among these patterns. In this way, the interference fluctuation caused by (de)activating cells is explicitly taken into account when calculating the user achievable rates. A tailored algorithm is developed to solve the formulated problem in the dual domain by exploiting the problem structure, which gives a significant complexity saving. Numerical results show a huge improvement in energy saving achieved by the proposed scheme. The user association derived from the proposed joint resource optimization is mapped to standard-compliant cell selection biasing. This mapping reveals that the cell-specific biasing for energy saving is quite different from that for load balancing investigated in the literature.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
