A scheduling-function-based distributed access protocol that uses CDM to relay control information in a network with hidden nodes
The authors introduce a method for broadcasting control information (such as the information essential for correct operation of SOSAM and other scheduling-function-based access protocols) in stationary networks with ''hidden'' nodes (multihop networks). Control information is transmitted as short bit-parallel control messages on a separate control channel whose capacity is shared among the bits of a control message using code division multiplexing (CDM). The CDM method takes advantage of spread-spectrum signal properties that allow, in particular, high accuracy of time-of-arrival measurement and relatively easy separation of multipath copies of a control message. Generalized versions of SOSAM's scheduling function and the protocol algorithm are also provided. The generalized protocol, which applies the new method for broadcasting control information, provides distributed collision-free channel-access control, and allows prioritized access with high channel utilization and small expected message delay.
- Research Organization:
- Dept. of Computer Science, Technion, Israel Institute of Technology, Haifa 32000
- OSTI ID:
- 6778470
- Journal Information:
- IEEE Trans. Comput.; (United States), Vol. C-36:5
- Country of Publication:
- United States
- Language:
- English
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ARRAY PROCESSORS
DISTRIBUTED DATA PROCESSING
EXECUTIVE CODES
ACCURACY
ALGORITHMS
COMPUTERIZED CONTROL SYSTEMS
DATA TRANSMISSION
SIGNALS
TASK SCHEDULING
TIME MEASUREMENT
COMMUNICATIONS
COMPUTER CODES
CONTROL SYSTEMS
DATA PROCESSING
MATHEMATICAL LOGIC
PROCESSING
990210* - Supercomputers- (1987-1989)