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MAC-PHY Frameworks for LTE and WiFi ...

Kasasbeh, Hadi Ahmad.

MAC-PHY Frameworks for LTE and WiFi Networks' Coexistence over the Unlicensed Band.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	MAC-PHY Frameworks for LTE and WiFi Networks' Coexistence over the Unlicensed Band.
作者:	Kasasbeh, Hadi Ahmad.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, 2019
面頁冊數:	173 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-02, Section: B.
附註:	Advisor: Cao, Lei.
Contained By:	Dissertations Abstracts International81-02B.
標題:	Electrical engineering.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13862122
ISBN:	9781085575102

MAC-PHY Frameworks for LTE and WiFi Networks' Coexistence over the Unlicensed Band.
Kasasbeh, Hadi Ahmad.

MAC-PHY Frameworks for LTE and WiFi Networks' Coexistence over the Unlicensed Band. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 173 p.

Source: Dissertations Abstracts International, Volume: 81-02, Section: B.

Thesis (Ph.D.)--The University of Mississippi, 2019.

This item must not be sold to any third party vendors.

The fifth generation of cellular communications (5G) introduces the idea of aggregating the licensed and unlicensed spectra to increase spectrum efficiency and provide better coverage. This idea is very promising but introduces challenging issues. Some of these issues are to handle coexistence between long term evolution (LTE) and existing technologies (e.g., WiFi) on the unlicensed spectrum, and to provide access fairness among these technologies.The main focus of this dissertation is to address these issues and to analyze the interactions between LTE and WiFi coexisting on the unlicensed spectrum. This can be done by providing some improvements in the first two communication layers in both technologies. Regarding the physical (PHY) layer, efficient spectrum sensing and data fusion techniques that consider correlated spectrum sensing readings at the LTE/WiFi users (sensors) are needed. Failure to consider such correlation has been a major shortcoming of the literature. This resulted in poorly performing spectrum sensing systems if such correlation is not considered in correlated-measurements environments.In the 5GHz band, for example, the cell size is relatively small, as a result, the sensors are in close proximity to one another, and hence, there is a high probability for their measurements to be correlated. Such correlation is considered in this dissertation in order to enhance the spectrum sensing abilities of LTE and WiFi systems.On the Medium Access Control (MAC) layer, two challenges must be met, first, choosing the channel that satisfies the user requirements, and second, provide fairness among the users in the same system and the fairness among users of different systems. To address these two challenges simultaneously, a new channel assignment mechanism is introduced for both systems with some differences to account for the two systems being different. The main idea of this channel assignment is to choose the channel that is just good enough for the required transmission by the cell (LTE or WiFi) and leave the over-qualified channels for other cells that may need them for their transmissions. Hence, higher throughput and fairness values can be achieved simultaneously compared to ordinary techniques, such as greedy and random channel assignment mechanisms.

ISBN: 9781085575102Subjects--Topical Terms:

454503
Electrical engineering.

MAC-PHY Frameworks for LTE and WiFi Networks' Coexistence over the Unlicensed Band.
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