LTE-Advanced中基于载波聚合的无线资源管理的研究

发布时间：2018-06-18 04:22

本文选题：LTE-Advanced + 载波聚合　；参考：《北京交通大学》2014年硕士论文

【摘要】：随着移动互联网络的发展与4G (Generation)技术的应用,人们对移动通信技术的需求越来越高。研究表明大部分的语音业务与数据业务发生在室内,由于建筑物之间的穿墙损耗,如何增强室内覆盖、提高室内用户的数据速率成为了无线通信亟需解决的问题。在LTE-Advanced (LTE-A, Long Term Evolution Advanced)系统中,通过家庭基站(HeNB,Home eNB),即Femtocell网络,可以增强室内覆盖,但也带来了一些新的挑战,如用户在宏基站(MeNB, Macro eNB)与家庭基站之间的接入选择与切换问题、家庭基站与宏基站之间的层间干扰问题、家庭基站与相邻家庭基站之间的层内干扰问题等。为了提高室内用户带宽,本文将载波聚合(CA, Carrier Aggregation)技术应用于Femtocell网络中,研究LTE-A系统中载波聚合Femtocell网络场景下的无线资源管理。本文在宏基站与家庭基站使用正交资源的基础上,提出了一种分布式的成员载波选择与冲突避免(CCSCA, Component Carrier Selection and Collision Avoidance)方案,该方案在选择成员载波(CC, Component Carrier)时,不仅考虑了本小区对邻小区的输出干扰及邻小区对本小区的输入干扰,还考虑了多个相邻小区选择同一个成员载波时的冲突情况。该方案不仅可以提高Femtocell小区中用户(UE, User Equipment)的信干噪比(SINR, Signal to Interference plus Noise Ratio),还可以提高Femtocell小区的吞吐量。为了提高资源利用率,宏基站与家庭基站可以使用相同的资源,但此时不得不考虑宏基站与家庭基站之间的层间干扰。本文在干扰代价与收益函数的基础上,还提出了一种分布式的功率控制方案使小区总效用达到最大,并且此方案在对宏用户(MUE, Macro UE)的效用影响不大的情况下,可以提高家庭用户(HUE, Home UE)勺效用。
[Abstract]:With the development of mobile Internet and the application of 4G generation technology, the demand for mobile communication technology is increasing. The research shows that most of the voice services and data services take place indoors. Due to the loss of walls between buildings, how to enhance the indoor coverage and improve the data rate of indoor users has become an urgent problem for wireless communication. In LTE-Advanced LTE-A, long term Evolution Advanced system, indoor coverage can be enhanced through the home NBN network of home base stations, or Femtocell networks, but it also brings some new challenges, such as access selection and handover between Acer stations MeNB, Macro eNB) and home base stations. The interlayer interference between the home base station and the macro base station, the interlayer interference between the family base station and the adjacent family base station, and so on. In order to improve the bandwidth of indoor users, Carrier aggregation (CA) technology is applied to Femtocell network in LTE-A system to study the wireless resource management in the scenario of carrier aggregation Femtocell network. Based on the use of orthogonal resources between Acer stations and home base stations, this paper proposes a distributed member carrier selection and collision avoidance (CCSCA) scheme, in which the component Carrier selection and collision avoidance (CCSCA) scheme is used to select the member carriers CCS (component Carrier). Not only the output interference of the cell to the adjacent cell and the input interference of the adjacent cell to the cell are considered, but also the conflict when several adjacent cells select the same member carrier is considered. This scheme can not only improve the signal-to-noise ratio (SINR), signal to interference plus (Noise), but also improve the throughput of Femtocell cell. In order to improve resource utilization, Acer station and home base station can use the same resources, but the interlayer interference between the base station and the home station has to be considered. Based on the interference cost and benefit function, this paper also proposes a distributed power control scheme to maximize the total utility of the cell, and this scheme has little effect on the utility of macro users, such as Mue, Macro UE. It can improve the utility of home users such as HUEA, Home UED.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.5

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