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Protocol Design and Performance Analysis for Network-assisted Device-to-Device Communication Systems : 기지국의 도움을 받는 단말 간 직접 통신 시스템의 프로토콜 제안 및 성능 분석

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Authors

김경수

Advisor
이광복
Major
공과대학 전기·컴퓨터공학부
Issue Date
2013-02
Publisher
서울대학교 대학원
Keywords
Device-to-Device systemService discoveryD2D session establishmentPerformance analysis
Description
학위논문 (석사)-- 서울대학교 대학원 : 전기·컴퓨터공학부, 2013. 2. 이광복.
Abstract
With the recent advent of LTE network, there has been increasing interest in integration of D2D (Device-to-Device) communication into an LTE network. The network-assisted D2D communication system is composed of three processes : Discovery , D2D session establishment, D2D communication. In discovery process, we base on one of the discovery processes proposed in conventional researches, which has not taken service discovery process into consideration with protocol design. There are needs to design protocol in this process and requirements to analyze and compare performance of the designed service discovery processes in the device discovery. We design new service discovery methods and protocols based on one of the conventional device discovery procedures and evaluate performance comparison of the proposed methods with using novel analysis model. In addition to the discovery process, only one system for D2D session establishment is proposed based on the suggested device discovery model and it does not include any specific protocol and performance analysis in conventional works. It is required to be analyzed and compared with the other potential methods in the D2D session establishment process. We propose several novel methods including the traditional system with design of protocol at each method and analyze performance of each method using unique mathematical modelings. By subdividing service discovery and D2D session establishment procedure, we propose new overall network-assisted D2D communication systems and protocols including systems suggested in the traditional research by combining the new proposed discovery methods with considering service discovery process and the new classified methods of D2D session establishment procedure. We show protocols and signaling processes of the proposed systems based on the LTE network and analyze its performance with novel mathematical modelings of proposed systems in terms of total resource overhead, loading amount of the network, power consumption of D2D device, which have not been suggested before. We can evaluate one of the proposed systems achieves better performance than the others depending on target D2D service characteristics and each performance comparison aspect.
Language
English
URI
https://hdl.handle.net/10371/122952
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