一种基于PDCCH信道资源优化分配减小微小区和宏小区公共信道干扰的方法
首发时间:2015-12-10
摘要:异构网络(HETNET) 是由一些具有不同覆盖范围的宏基站和微基站采用相同频率重叠布施在宏蜂窝网中混合而成的新型架构的网络,为了保证异构网络中信息的可靠传输,需要对公共信道,包括控制信道和参考信号进行干扰优化。本论文提出了一种基于PDCCH信道资源优化分配减小微小区和宏小区公共信道干扰的方法,根据微基站用户总数等情况确定OFDM符号数并由宏基站与微基站的实时情况调整聚合等级(AL)。该算法具有资源分配算法复杂度低的特点,能够通过对时域、频域等的合理调整,能够合理分配用户公用信道资源,提高微基站系统容量,达到减小HETNET场景下宏基站与微基站公共信道干扰的目的。
关键词: 信息与通信系统1 异构网络 2 物理下行控制信道 3;聚合等级 4;控制信道资源粒子 5
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A resource scheduling algorithm of PDCCH to reduce the interference
Abstract:In heterogeneous network (HetNet), microcells are deployed jointly with macrocells which has used the same frequency. To ensure the reliable transmission of information in Hetnet system, the interference of control channel and reference signal should be optimized. This paper presents a method based on resource allocation of PDCCH to reduce the interference between microcells and macrocells in LTE Hetnet system. The process includes determining the number of OFDM according the number of users in microcells, adjusting the aggregation level(AL) according the state of microcells and macrocells. This method can reduce the allocation algorithm complexity, allocates control channel resources reasonably, improve the base station system capacity and at the same time reduce the interference between microcells and macrocells.
Keywords: Information and communication system 1 heterogeneous networks 2 physical downlink control channel 3 aggregation level 4 control channel element 5
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一种基于PDCCH信道资源优化分配减小微小区和宏小区公共信道干扰的方法
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