Hybrid contention/reservation channel-access schemes for integrated voice/data wireless networks

Akira Sugihara, Kei Enomoto, Iwao Sasase

Research output: Contribution to journalArticlepeer-review


We analyze the performance of the wireless integrated multiple access (WIMA) protocol by applying the fixed contention non-interleaved-frame fixed-length (F-NIFFL) scheme, in which hybrid contention/reservation channel-access schemes are used in integrated voice/data wireless networks. In the proposed scheme, some data packets are first transmitted in the contention-based slots, and the packets which collided or were not transmitted are transmitted in the later reserved slots. A two-dimensional first-order Markov chain model is used for our analysis, and we show that the proposed protocol can decrease the data-packet delay compared to the conventional WIMA with pure reservation NIFFL (PR-NIFFL) scheme, in which all data packets are sent under the reservation access protocol. Therefore, the proposed protocol is more effective in satellite communication networks which may have large round-trip propagation delay.


  • Contention/reservation channel-access scheme
  • Integrated voice/data communication
  • Satellite communication
  • WIMA

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Hybrid contention/reservation channel-access schemes for integrated voice/data wireless networks'. Together they form a unique fingerprint.

Cite this