| URN |
etd-0801117-153118 |
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| Author |
Fu-sheng Chou |
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| Author's Email Address |
No Public. |
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| Statistics |
This thesis had been viewed 5567 times. Download 0 times. |
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| Department |
Computer Science and Engineering |
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| Year |
2017 |
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| Semester |
1 |
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| Degree |
Master |
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| Type of Document |
|
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| Language |
zh-TW.Big5 Chinese |
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| Title |
Handover Mechanism Based on Device-to-Device Communication |
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| Date of Defense |
2017-08-23 |
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| Page Count |
81 |
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| Keyword |
Quality of Service
Control Signal
Handover
Device-to-Device
Long Term Evolution Advanced
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| Abstract |
The 3rd Generation Partnership Project (3GPP) formulated a standard of “Proximity Services” (ProSe), also called “Device-to-Device” (D2D) communication, which is a promising technology to provide high throughput and low latency services between end-users.
Handover is an essential issue in wireless networks, especially for the mobility of a user equipment (UE). We need to transfer the connection from the source eNB to target eNB so that the UE can achieve the better quality.
The main idea of this paper is that the two D2D devices can communicate directly without additional transmissions through a base station, but their control signals must connect to the eNBs so that the base stations can adjust the power of devices and allocate the resources. And in the current standard of handover mechanism, the number of unnecessary handover could be increased by the effect of shadowing fading. Moreover, LTE-A only considers the handover procedure of single user; the handover mechanism for a D2D pair is not standardized. When a D2D pair moves around the cell boundary, the control signal of two UEs may connect to different base stations. The latency could be increased due to the exchange of D2D related information. Hence, we propose a mechanism of handover decision and timing based on D2D communication in order to minimize the signaling overhead. We hope that two D2D devices can connect to the same eNB as much as possible for a lower signaling overhead. First, we predict the target eNB based on the movement of the two devices and the relationship of signal with the neighboring eNBs. Second, we collaborate two D2D devices with eNBs to make a handover decision in the light of the received power or the stability of connection. Simulation results validate that the proposed scheme can reduce the number of handoffs and the signaling overhead to achieve a better performance. |
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| Advisory Committee |
Tzung-Pei Hong - chair
Shu-Min Li - co-chair
Ming-Chao Chiang - co-chair
You-Chiun Wang - co-chair
Wei-Kuang Lai - advisor
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| Files |
Indicate in-campus at 5 year and off-campus access at 5 year. |
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| Date of Submission |
2017-09-06 |
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