| TD-LTE下行系统中PDSCH资源映射设计与实现 |
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| 引用本文： | 何云瑞,张瑞齐,宋 华,李宗强,艾 渤.TD-LTE下行系统中PDSCH资源映射设计与实现[J].太赫兹科学与电子信息学报,2016,14(6):885-890. |
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| 作者姓名： | 何云瑞 张瑞齐 宋 华 李宗强 艾 渤 |
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| 作者单位： | State Key Laboratory of Rail Traffic Control and Safety，Beijing Jiaotong University，Beijing 100066，China,Institute of Microelectronics，Chinese Academy of Sciences，Beijing 100029，China,Information Engineering Faculty, Engineering University of Armed Police Force, Xi’an Shaanxi 710086，China,Information Engineering Faculty, Engineering University of Armed Police Force, Xi’an Shaanxi 710086，China and State Key Laboratory of Rail Traffic Control and Safety，Beijing Jiaotong University，Beijing 100066，China |
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| 基金项目： | 国家科技重大专项资助项目(Y4GZ342001)；国家重点实验室自主课题资助项目(RCS2014ZT11) |
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| 摘 要： | 物理下行共享信道(PDSCH)是长期演进(LTE)下行系统中主要承载用户数据的物理通道，在资源映射过程中，需避让其他信道或信号，逻辑复杂，加大了实现难度。本文在分析PDSCH资源映射原理的基础上，将其映射过程根据避让情形分为5类，并提出了符号级、资源块组(RBG)级等2级跳转条件和符号级、RBG级、资源粒子(RE)级等3种跳转处理方式，通过对位图进行参数提取，设计出一种支持下行所有带宽配置的映射方案。该方案资源开销小，可扩展性强，已应用到LTE基站项目的开发中。
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| 关 键 词： | 长期演进 现场可编程逻辑阵列 物理下行共享信道 资源映射 |
| 收稿时间： | 2015/7/17 0:00:00 |
| 修稿时间： | 2015/10/20 0:00:00 |
Design and implementation of PDSCH resource-mapping in TD-LTE downlink system |
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| HE Yunrui,ZHANG Ruiqi,SONG Hu,LI Zongqiang and AI Bo.Design and implementation of PDSCH resource-mapping in TD-LTE downlink system[J].Journal of Terahertz Science and Electronic Information Technology,2016,14(6):885-890. |
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| Authors: | HE Yunrui ZHANG Ruiqi SONG Hu LI Zongqiang and AI Bo |
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| Abstract: | In Long Term Evolution(LTE) downlink system, Physical Downlink Shared Channel(PDSCH) is the main physical channel carrying user data. In resource-mapping, these data mapping to elements not reserved for other channels or signals makes implementation more logically complex. By analyzing the principle of PDSCH resource mapping, the paper divides the mapping process into five categories depending on avoidance situations. Also, two jumping conditions including symbol-level, Resource Block Group(RBG)-level are proposed; and three jumping treatments: symbol-level, RBG-level, Resource Element(RE-level, are introduced. Finally, coupled with parameters extracted from bitmap, a mapping scheme supporting all downlink bandwidth kinds is designed. The scheme with low cost and strong scalability has been applied to the development of LTE base station project. |
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