Packet Switching in Radio Channels: Part I--Carrier Sense Multiple-Access Modes and Their Throughput-Delay Characteristics
Kleinrock, L.
Tobagi, F.
University of California, Los Angeles, CA;
This paper appears in: Communications, IEEE Transactions on
Publication Date: Dec 1975
Volume: 23,
Issue: 12
On page(s): 1400- 1416
ISSN: 0090-6778
Current Version Published: 2003-01-06
Abstract
Radio communication is considered as a method for providing remote terminal access to computers. Digital byte streams from each terminal are partitioned into packets (blocks) and transmitted in a burst mode over a shared radio channel. When many terminals operate in this fashion, transmissions may conflict with and destroy each other. A means for controlling this is for the terminal to sense the presence of other transmissions; this leads to a new method for multiplexing in a packet radio environment: carrier sense multiple access (CSMA). Two protocols are described for CSMA and their throughput-delay characteristics are given. These results show the large advantage CSMA provides as compared to the random ALOHA access modes.
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