基于云接入网络的资源分配方法
首发时间:2016-01-06
摘要:随着移动数据业务的急剧增加,相应地,移动数据流量也在飞速增加,云接入网络(C-RAN)作为移动研究院提出的新型网络架构能够提供良好的频谱性能和能量有效性,它能很好地解决潮汐效应,从而更加有效地解决能源消耗,充分解决热点地区的网络拥塞问题,并且可以提供较多的基站进行流量卸载和非热点区域分配较少基站以节约能源消耗收到学术界和工业界的广泛关注。本文提出C-RAN中考虑时延并最小化发射功率的最优资源分配方法,这样不仅能够使能量效率最大化,而且还能提供更好的覆盖和服务,最优资源分配方法包括动态分簇方法和功率分配方法两个方面,其中动态分簇方法只是全部队列状态信息(GQSI)的函数,该分簇方法在中央控制器中进行,花费时间较长。而功率分配算法是在所有基站中进行的,并且是全部队列信息(GQSI)和全部信道状态信息(GCSI)的函数,花费时间较短。通过将基于时延的最优资源分配问题建模为马尔科夫决策模型,并利用贝尔曼等式解决该问题,得到最优的控制策略,通过仿真结果表明,该方法具有很好的收敛特性。
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Resource allocation method based on cloud access network
Abstract:With the rapid increase of mobile data services,accordingly, mobile data traffic is increasing at arapid pace, the cloud access networks (C-RAN) proposed by mobile institute can provide good spectrum performance and energy efficiency, it can well solve the tidal effect, thus can more effectively solve the energy consumption,and fully solve the problem of hot spots of network congestion,it can not only provide more base stations to flow discharge,but also distribute less base stations in the not hotspots to save energy consumption,which received extensive attention by academia and industry. In this paper, it proposed the optimal resource allocation methods of minimizing the delay and transmission power,it can not only maximize the energy efficiency, but also provide better coverage and services, the optimal resource allocation methods included the dynamic clustering method and the power allocation method。the dynamic clustering method is the function of all queue state information (GQSI) ,it is conducted in the central controller,and takes a longer time.however,the power allocation algorithm is done in all the base stations, and it is the function of global queue information (GQSI) and global channel state information (GCSI) , it takes shorter time. By modeling the problem of optimal resource allocation based on delay as a markov decision model, and use the Bellman equation to solve the problem.finally,we can get the optimal control strategy, the simulation results show that this method has good convergence property.
Keywords: Wireless communication technology Delay The allocation of resources
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