Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Access Control Protocol for Bursty Traffic in TDMA/TDD-based Wireless ATM Networks

TDMA/TDD 기반 무선 ATM망에서 버스트 트래픽을 위한 접속 제어 프로토콜

  • 임인택 (부산외국어대학교 컴퓨터공학부)
  • Published : 2003.08.01
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Abstract

In this paper, a contention-based reservation access control algorithm and a slot allocation algorithm are proposed for non-real-time bursty traffic services in the wireless ATM networks. In order to reduce the collisions of the reservation request packets, the base station scheduler calculates the transmission probability using the number of RAS minislots and the estimated load of the reservation request packets. And it broadcasts the calculated transmission probability over the downlink control channel. Mobile terminals, which have traffic burst, select randomly a RAS minislot and transmit the reservation request packet by the received transmission probability. The reservation request packet contains the number of packets in the buffer. The slot allocation is based on the buffer status of the received reservation request packets. The base station scheduler allocates slots in proportion to the total number of slots that are requested by each terminal.

본 논문에서는 무선 ATM망에서 비실시간성의 버스트 트래픽을 서비스하기 위한 경쟁기반 예약형 접속 제어 알고리즘과 슬롯 할당 알고리즘을 제안하였다. 제안한 기법에서는 예약요청 패킷의 충돌을 줄이기 위하여 예약요청 패킷 전송을 위한 RAS 미니슬롯의 수와 예약요청 부하를 기반으로 기지국이 전송 확률을 계산하고, 이를 하향 제어채널을 통하여 단말기들에게 방송한다. 전송할 트래픽 버스트가 있는 단말기들은 임의의 RAS 미니슬롯을 선택하여 기지국으로부터 수신한 전송 확률로 단말기 버퍼에 있는 패킷 수를 포함하는 예약요청 패킷을 전송한다. 한편, 슬롯 할당은 성공적으로 수신한 단말기의 버퍼 상태정보를 기반으로 한다. 기지국에서는 단말기들이 요청한 총 슬롯 수에 비례하여 슬롯을 할당한다.

Keywords

References

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