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Hierarchy schedule-sensing protocol for CDMA wireless data-centric networks with multiple packet collision and capture effect

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2 Author(s)
Hsiao-Hwa Chen ; Inst. of Commun. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan ; Tea, W.-T.

This paper focuses on performance analysis of a CDMA wireless data network based on hierarchy schedule-sensing (HSS) protocol, in which a common-code permission frame beacon is used to schedule request transmissions to avoid packet collisions. To further reduce scheduling delay, hierarchical group-based coding is adopted in the scheme. The performance of such a network is evaluated considering packet collisions with and without packet capture effect using a two-dimensional Markovian chain model. In particular, this paper will study the impact of multiple packet-collision effect on network performance with the help of the average packet-collision rate derived explicitly in the paper. The obtained results show that, despite its low implementation complexity, the HSS protocol is a fairly robust medium-access control protocol featuring uniformly high throughput and short delay even under very high traffic load, which especially suits data-centric wireless networks with relatively small coverage area and great node density.

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Networking, IEEE/ACM Transactions on  (Volume:12 ,  Issue: 6 )