주문형 데이터 방송을 위한 멀티채널 스케줄링 = Multi-Channel Scheduling for On-Demand Data Broadcasting

다국어 초록 (Multilingual Abstract)

The third generation of a highly efficient portable is appeared by suing over 2GHz from the rapid developing of the recent mobile communication. Those mobile computer and portable devices can access to the wireless network for the requesting information without regard to time and place in the world. People are able to have the conversation while they are looking each other by using the high speed communication. Many of the related communication companies try to improve the several extended and new application program development and service.
Some of the difficulty is generated in the wireless network environment with the existing cable network. The wireless network environment differs from the cable network because every device cannot maintain the optimum communication environment at the same time. Since the bandwidth of the wireless network and the portable devices battery capacity are limited while traveling, the decision of the usefulness for a client is important. The data broadcast technique is the way to give and receive information to save the consumption for the traveler’s bandwidth and the battery in the limited environment when the continuous service is difficult like the cable network.
The multi-channel broadcast is used to solve the problem of the data broadcast of the existing single channel environment, so this technique proposes the effective broadcast method to the clients. The client's demanded broadcast data is provided and the requested broadcast is serviced after the investigation from the mobile user's favorite and frequent broadcasting.
In this paper, many client's requesting data need to be provided through the broadcast server when the client claims information to the server. Therefore, the multi-channel broadcast technique is used to make the client’s quick listening. The requested data of the client takes on the queue and each channel allotment is given gradually in order to do the multi channel broadcast. By using the priority order of queue, the discriminating service is offered between the normal client group and the priority client group. The service begins in the division of the normal, priority, and high client group according to the level and the data trait.

목차 (Table of Contents)

• 1. 서론 = 1
• 1.1 연구의 배경 = 1
• 1.2 연구의 목적 = 4
• 1.3 연구의 방법 및 구성 = 6
• 2. 관련 연구 = 8
• 2.1 데이터 방송(Data Broadcasting) = 8
• 2.2 멀티채널 방송방송(Multi-Channel Broadcasting) = 10
• 2.3 우선순위 큐 데이터 방송 기법 = 12
• 3. 주문형 다중채널 데이터 방송 = 14
• 3.1 우선순위 큐 정의 = 14
• 3.1.1 클라이언트 구성 = 14
• 3.1.2 스케줄링 절차 = 15
• 3.2 방송 순서 및 채널 할당 = 17
• 3.2.1 우선순위를 적용한 채널 할당 비교 = 17
• 3.3 데이터 방송 알고리즘 = 20
• 4. 성능 평가 = 25
• 4.1 실험 환경 및 방법 = 25
• 4.2 그룹별 채널 할당 비교 = 30
• 5. 결론 및 향후 연구 = 34
• 참고문헌 = 36
• ABSTRACT = 40