- 學位論文
探討LTE-A系統層模擬器的各種建構模塊實施之影響
Investigating Impact of Diverse Building Blocks Implementation of LTE-A System Level Simulator
摘要
3GPP(3rd Generation Partnership Project)是電信協會團體之間的合作，被稱為組織夥伴(Organizational Partners)。在3GPP所提出的LTE-A (long term evolution-advanced) 無線通訊標準中通常會對不同的技術規範其標準的實施流程。但由於有些技術在標準中並沒有規範實施流程，因此在模擬器的實施中，不同的公司都會各自發展其實施方案。另一方面，模擬平台完成後都必須經由校正程序(calibration)來確保模擬器的可信度，校正程序是開發模擬平台過程中最重要的階段，因為精確的模擬結果是得來不易的。但上述提到說有些技術的實施方法是標準文件中沒有規範的，此時不同的實施方法就會影響到校正的結果。 本論文基於系統層模擬器建構出各種建構模塊，主旨在探討各種建構模塊(building blocks)的實施對於LTE-A系統層模擬器(system level simulator, SLS)之影響以及如何建構一套能夠與各大廠商評比之LTE-A系統層模擬器。本論文將建構模塊分為兩類：一類為技術指定(technology-specific)之建構模塊，也就是在標準文件中會指定其實施流程的建構模塊，包含排程方法與接收器設計，另一類為技術非指定(technology-nonspecific)之建構模塊，也就是在標準文件中不會指定其實施流程的建構模塊，包含通道狀態估計方法及MCS selection。首先，本論文描述技術指定之建構模塊的實施方法以及對於技術非指定之建構模塊提出可能的實施方案。其次，為了確保系統層模擬器是可以比較的，會藉由校正程序來確保其結果。校正的對象包含3GPP report及METIS D6.1 文件，結果顯示此模擬平台能夠應用在LTE-A的評估程序上。最後，本論文透過LTE-A系統層模擬器來評估技術非指定之建構模塊的實施對於蜂窩網路效能的影響。
並列摘要
The 3rd Generation Partnership Project (3GPP) is a collaboration between groups of telecommunications associations, known as the Organizational Partners. The standard implementation procedure of different techniques in the 3GPP long term evolution-advanced (LTE-A) wireless communications standard are typically specified. However, due to some implementation procedure of technical documents are not specified in the standard, different companies will develop their scheme. On the other hand, the simulator must be to ensure the reliability via the calibration procedure after completing. Calibration procedure is the most important stage in simulation platform development process, because accurate simulation results are hard-earned. The above mentioned that some implementation scheme of technology is not specified in the standard, therefore, different implementation schemes will affect the calibration results. This paper develops diverse building blocks on SLS, the main issue under consideration is investigating impact of diverse building blocks implementation of LTE-A system level simulator (SLS) and how to develop an LTE-A system-level simulator with comparing to major companies. This paper classifies building blocks into two categories: one is technology-specific building blocks which is specifies in the standard, including scheduler method and receiver design, and the other is technology-nonspecific building blocks which is not specifies in the standard, including RI/PMI estimation method and MCS selection. First, this paper describes the implementation methodology of technology-specific building block and proposes possible implementation schemes for technology-nonspecific building block. Second, in order to ensure the SLS is comparable, the calibration result is ensured by calibration procedure. The calibration objects include 3GPP report and METIS D6.1 document. These results demonstrate that the simulation platform can be used in the LTE-A evaluation process. Finally, this paper evaluates the impact of diverse building blocks implementation on performance of cellular networks by LTE-A SLS.