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首页> 外文期刊>Wireless Communications Letters, IEEE >A Decentralized Sleep Mechanism in Heterogeneous Cellular Networks With QoS Constraints
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A Decentralized Sleep Mechanism in Heterogeneous Cellular Networks With QoS Constraints

机译：具有QoS约束的异构蜂窝网络中的分散式睡眠机制

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摘要

We introduce a sleep mechanism for energy efficiency in heterogeneous cellular networks, where macro base stations and small base stations coexist in the same frequency band. The strategy is to put high-power macro base stations into sleep mode and offload the users to low-power small base stations or neighboring macro base stations. To do so, we first formulate a joint optimization problem to minimize the total energy consumption while maintaining the QoS of users. Then we decouple it into two subproblems: user association and resource allocation, and macro base station sleep mechanism. We propose a modified many-to-one matching algorithm to solve the first one and a voting-based dynamic sleep mechanism for the second one. Simulation results show that our scheme has both lower energy consumption and lower user blocking ratio compared with existing sleep mechanisms.
机译：我们介绍了异构蜂窝网络中提高能效的睡眠机制，其中宏基站和小型基站共存于同一频带中。该策略是使高功率宏基站进入睡眠模式，并将用户转移到低功率小型基站或相邻的宏基站。为此，我们首先提出一个联合优化问题，以在保持用户QoS的同时将总能耗降至最低。然后，我们将其分解为两个子问题：用户关联和资源分配以及宏基站睡眠机制。我们提出一种改进的多对一匹配算法来解决第一个问题，并为第二个问题提供基于投票的动态睡眠机制。仿真结果表明，与现有的睡眠机制相比，该方案具有更低的能耗和更低的用户阻塞率。

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