The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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A TDMA-based Relay Protocol for Voice Communication on a Small Group

소규모 그룹에서의 음성 통신을 위한 TDMA 기반의 릴레이 프로토콜

  • Received : 2013.01.10
  • Accepted : 2013.02.08
  • Published : 2013.02.28
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Abstract

Since the wireless communications have a limited transmission, the devices just around a master node can exchange data. Though Bluetooth and Zigbee support ad hoc, they are not appropriate for real-time voice communications. In this paper, we present a TDMA-based relay protocol for several users to communicate simultaneously. The proposed protocol can relay data or voice to other nodes in real-time by the multi-hop transmission method using TDMA. And the proposed protocol improves the network performance by allocating different frequencies to the slaves depending on the routing path scheduled by the routing table. NS-2 simulation shows that the performance of the proposed protocol is good in terms of the transmission delay and pecket loss probability in the real-time voice transmission.

근거리 무선 통신은 전송 거리에 제약이 있어 마스터 주변의 노드만이 통신이 가능하다. 기존의 블루투스와 지그비와 같은 통신은 ad hoc을 위한 기술을 제공함에도 불구하고 실시간 대화를 위한 멀티 홉 전송에는 적절하지 못하다. 본 논문은 TDMA을 이용하여 소규모의 여러 사용자들이 서로 대화할 수 있는 릴레이 프로토콜을 제안한다. 제안한 릴레이 프로토콜은 TDMA를 이용하여 실시간으로 데이터 또는 음성의 다중 홉 재전송이 가능하다. 제안하는 프로토콜은 라우팅 경로에 따라 주파수를 달리하여 패킷을 전송하는 방법으로 이동에 따른 채널 효율의 감소를 줄여 네트워크의 성능을 높이고 있다. NS-2 시뮬레이션을 통하여 제안한 프로토콜이 실시간 음성 전달에서 전송 지연과 패킷 손실률에 있어 우수한 성능을 가지고 있음을 보인다.

Keywords

References

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