Design and performance evaluation of new STMA/DA peer-to-peer MAC scheme for wireless LAN using directional antennas

Hiroshi Shigeno, Yutaka Matsushita

Research output: Contribution to journalReview articlepeer-review


An ad hoc LAN is a LAN which is temporarily formed of arbitrary stations at an arbitrary site. This paper discusses the Medium Access Control (MAC) scheme in the wireless LAN, from the viewpoint of station mobility and the basic aspect of the ad hoc LAN. In order to support the ad hoc LAN, it is desirable to apply the peer-to-peer MAC scheme, which does not require a particular infrastructure. In the peer-to-peer MAC scheme in general, however, performance degradation due to hidden terminals is a problem. Especially when the station is moved or an ad hoc LAN is formed near an existing service area, stable performance is difficult to realize. From such a viewpoint, this paper newly proposes the STMA/DA (single tone multiple access with directional antennas) peer-to-peer MAC scheme. STMA/DA utilizes the busy tone and the reservation mechanism, so that stable communication is secured even if there are hidden terminals. The geographical area occupied by the communication is minimized by using sector antennas, so that the number of simultaneous communications in the system can be increased. The performance of STMA/DA is evaluated by computer simulation. Through a comparison to CSMA and RI-BTMA, the effectiveness of STMA/DA is demonstrated.

Original languageEnglish
Pages (from-to)74-84
Number of pages11
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number5
Publication statusPublished - 1999 May


  • Ad hoc LAN
  • Hidden terminal problem
  • Peer-to-peer MAC
  • Sector antennas
  • Wireless LAN

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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