[移动通讯]【Carrier Aggregation-3】【5G】-Toy模板网

这篇具有很好参考价值的文章主要介绍了[移动通讯]【Carrier Aggregation-3】【5G】。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

前言：

参考：

5G Mobile Communications：《Carrier Aggregation in 5G》

1： carrier Allocation Schemes

2：网络结构

3： LTE CA

4: 5G CA

一 Carrier Allocation Schemes

CA 主要作用是增加BandWidth,跟子载波分配方式，主要分为以下三种

[移动通讯]【Carrier Aggregation-3】【5G】,5G

比如 Intra-band contiguous:

Component carrier is contiguous in BandA

二网络结构

[移动通讯]【Carrier Aggregation-3】【5G】,5G

PSC	Primary Serving Cell
PCC	Primary Component Carrier: RRC & data
SSC	Secondary Serving cell
SCC	Secondary Component carrier: user data

三 LTE CA

LTE Rel-10 支持5个CA:100M

LTE Rel-13 支持32 CA: 640M

接入层支持的版本在前面讲过，在上行OTA UE Capbaility Information 可以看到

[移动通讯]【Carrier Aggregation-3】【5G】,5G

四 5G CA

[移动通讯]【Carrier Aggregation-3】【5G】,5G

Carrier aggregation (CA) [1] is one of the key features of LTE-Advanced (LTE-A) systems. According to the CA approach, the user equipments (UEs) can access a wider transmission bandwidth by using CA to aggregate a number of individual component carriers (CCs) shaping heterogeneous contiguous and non-contiguous frequency bands.

These bands can be also unlicensed to the system and therefore a transmission scheme should include sophisticated interference management techniques, according to 3GPP standards [2]. Several new challenging issues arise in radio resource management (RRM) framework for LTE-A systems supporting multipleCC operation, including the selection of the optimal subset of carriers and or the optimal power allocation that maximize the rate of a UE etc.

The performance of CA over deploying independent carriers is investigated from different aspects in [3]-[6]. Resource allocation schemes are also important for the efficient implementation of a CA scheme. A cross layer approach for carrier selection and power control for the uplink of a CA system is examined in [7]. A greedy algorithm for efficient resource allocation for the downlink case is proposed in [8]. The theoretical analysis and the experimental results in these works show that CA can significantly enhance the system capabilities in user accommodation and throughput.文章来源地址https://www.toymoban.com/news/detail-698140.html

到了这里，关于[移动通讯]【Carrier Aggregation-3】【5G】的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！