Centralized Backoff Control Scheme in Slotted CDMA Systems
نویسندگان
چکیده
منابع مشابه
Effect of exponential backoff scheme and retransmission cutoff on the stability of frequency-hopping slotted ALOHA systems
The combinatorial effect of an exponential backoff scheme and retransmission cutoff on the stability of frequencyhopping slotted ALOHA systems with finite population is investigated in terms of the catastrophe theory. In the systems, the packet retransmission probabilities are geometrically distributed with respect to the number of experienced unsuccessful transmissions and a packet will be dis...
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Radio channel has been a precious resource to manage since the take off of the mobile communications in late 70s. Several techniques have proposed over the years trying maximize utilization while allowing a number of users to share the channel. Among those techniques, CDMA has arisen as one of the most popular ones, and several approaches have been taken following the concept of carrier sensing...
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This paper provides stability and instability conditions for slotted Aloha under the exponential backoff (EB) model with geometric law i 7→ b0 , when transmission buffers are in saturation, i.e., always full. In particular, we prove that for any number of users and for b > 1 the system is: (i) ergodic for i0 > 1, (ii) null recurrent for 0 < i0 ≤ 1, and (iii) transient for i0 = 0. Furthermore, w...
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In distributed spread-spectrum packet radio networks where the number of active users and the packet arrival rate may vary with time, an adaptive channel access protocol is necessary to avoid system saturation. In this paper, we present an analytical investigation of generalized retransmission backoff policies for slotted ALOHA FH-SSMA systems. In the backoff techniques, each user adapts the re...
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ژورنال
عنوان ژورنال: Journal of information and communication convergence engineering
سال: 2011
ISSN: 2234-8255
DOI: 10.6109/jicce.2011.9.1.038