Aggregation of Unlicensed Spectrum and Dynamic Resource Allocation to Optimize LTE-A System Efficiency
| Autor: | Wan-ru-Li, 李婉如 |
|---|---|
| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 With the development of mobile communication technology, the number of users and the demand of data rate has been increasing, causing serious shortage of the spectrum resources. In 2008, 3GPP began to develop the specification of the fourth-generation wireless network system, i.e. LTE-Advanced, and the carrier aggregation (CA) technology to enhance the data rate by aggregating continuous and non-continuous carriers to make a lot of users satisfied with the transmission requirement. But the demand of users for multimedia Internet services has been increasing, making the unlicensed spectrum become overloaded. Therefore, this thesis hopes to combine the licensed and unlicensed spectrum to provide a wide data channel and high data rate to users. This thesis focuses on improving the system throughput in the downlink and proposes the way based on the generic algorithm (GA) to optimize the weight. According to channel quality and loading, we select the component carrier which is the most suitable to users, and a resource allocation method for the GBR and non-GBR of different traffic types to make resource allocation more effective. Finally, we validate our method through simulation, to check out whether the proposed method can improve system throughput and user satisfaction or not. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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