Memo from the Consortium for Slow Commotion Research (CSCR) (RFC1217)
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2019-Feb-11
Internet Society Requests For Comment (RFCs)
This RFC is in response to RFC 1216, "Gigabit Network Economics and Paradigm Shifts". This memo provides information for the Internet community. It does not specify an Internet standard.
Network Working Group V. Cerf Request for Comments: 1217 CSCR 1 April 1991
Memo from the Consortium for Slow Commotion Research (CSCR)
Status of this Memo
This RFC is in response to RFC 1216, "Gigabit Network Economics and Paradigm Shifts". Distribution of this memo is unlimited.
To: Poorer Richard and Professor Kynikos
Subject: ULSNET BAA
From: Vint Cerf/CSCR
The Consortium for Slow Commotion Research (CSCR)  is pleased to respond to your research program announcement (RFC 1216) on Ultra Low-Speed Networking (ULSNET). CSCR proposes to carry out a major research and development program on low-speed, low-efficiency networks over a period of several eons. Several designs are suggested below for your consideration.
Military requirements place a high premium on ultra-robust systems capable of supporting communication in extremely hostile environments. A major contributing factor in the survivability of systems is a high degree of redundancy. CSCR believes that the system designs offered below exhibit extraordinary redundancy features which should be of great interest to DARPA and the Department of Defense.
2. Jam-Resistant Land Mobile Communications
This system uses a highly redundant optical communication technique to achieve ultra-low, ultra-robust transmission. The basic unit is the M1A1 tank. Each tank is labelled with the number 0 or 1 painted four feet high on the tank turret in yellow, day-glo luminescent paint. Several detection methods are under consideration:
(a) A tree or sand-dune mounted forward observer (FO) radios to a reach echelon main frame computer the binary values
Cerf [Page 1]
RFC 1217 ULSNET BAA April 1991
of tanks moving in a serial column. The mainframe decodes the binary values and voice-synthesizes the alphameric ASCII-encoded messages which is then radioed back to the FO. The FO then dispatches a runner to his unit HQ with the message. The system design includes two redundant, emergency back-up forward observers in different trees with a third in reserve in a foxhole.
(b) Wide-area communication by means of overhead reconnaissance satellites which detect the binary signals from the M1A1 mobile system and download this information for processing in special U.S. facilities in the Washington, D.C. area. A Convection Machine  system will be used to perform a codebook table look-up to decode the binary message. The decoded message will be relayed by morse-code over a packet meteor burst communications channel to the appropriate Division headquarters.
(c) An important improvement in the sensitivity of this system can be obtained by means of a coherent detection strategy. Using long baseline interferometry, phase differences among the advancing tank column elements will be used to signal a secondary message to select among a set of codebooks in the Convenction Machine. The phase analysis will be carried out using Landsat imagery enhanced by suitable processing at the Jet Propulsion Laborator...