A Scheduling-Function-Based Distributed Access Protocol that Uses CDM to Relay Control Information in a Network with Hidden Nodes

Authors:
Yaron I. Gold;W. R. Franta
Affiliations:
Israel Institute of Technology, Haifa;ADC Telecommunications, Inc., Minneapolis, MN
Venue:
IEEE Transactions on Computers
Year:
1987

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Abstract

We 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.