Packet Radio Network - Revision history

Jnc: /* External links */ Correlate

2025-10-08T16:48:22Z

‎External links: Correlate

Jnc: /* External links */ +Packet Radio Temporary Notes

2025-09-17T18:33:01Z

‎External links: +Packet Radio Temporary Notes

Jnc: /* External links */ +Measurement and Evaluation Studies of Packet Radio Telecommunications Systems

2025-04-07T21:22:39Z

‎External links: +Measurement and Evaluation Studies of Packet Radio Telecommunications Systems

Jnc: /* External links */ +The SRI Van and Computer Internetworking; The SRI Van and Computer Internetworking

2025-01-31T22:14:05Z

‎External links: +The SRI Van and Computer Internetworking; The SRI Van and Computer Internetworking

Jnc: /* External links */ +SRI Mobile Van

2024-01-29T18:49:04Z

‎External links: +SRI Mobile Van

Jnc: /* External links */ +Initial Comparison of EPRs and IPRs in the Pup Internet Environment

2024-01-23T04:55:56Z

‎External links: +Initial Comparison of EPRs and IPRs in the Pup Internet Environment

Jnc: typo

2021-11-03T20:53:01Z

typo

Jnc: station details, error in SPP

2021-11-03T20:52:10Z

station details, error in SPP

Jnc: /* See also */ +1

2021-11-02T22:20:41Z

‎See also: +1

Jnc: BBN produced the station too

2021-11-01T22:11:17Z

BBN produced the station too

@@ Line 29: / Line 29: @@
 * [https://apps.dtic.mil/sti/tr/pdf/ADA157696.pdf Measurement and Evaluation Studies of Packet Radio Telecommunications Systems: Final Technical Report]
 * [https://ed-thelen.org/comp-hist/CORE-3-1-SRI-TCP-IP.html The SRI Van and Computer Internetworking]
 * [https://computerhistory.org/wp-content/uploads/2019/08/core-2002-02.pdf Core 3.1, February 2002] - contains a long article, 'The SRI Van and Computer Internetworking', which covers some Packet Radio Network work
 * [http://ana-3.lcs.mit.edu/~jnc/tech/mos/dsp/ DSP] - source code (in [[MACRO-11]]) for SPP in the [[Terminal Interface Unit‎]]
 [[Category: Networking]]

@@ Line 20: / Line 20: @@
 ==External links==
-* [https://upload.wikimedia.org/wikipedia/commons/6/6f/Army_Packet_Radio_Network_Protocol_Study_-_SRI%2C_November_1977.pdf Army Packet Radio Network Protocol Study] - ''III The ARPA Packet Radio Network'', pp. 8-14
+* [https://archive.org/details/packet-radio-temporary-notes Packet Radio Temporary Notes] - the main contemporaneous document series of the project; not totally complete; but has most of them
 * [https://morse.colorado.edu/~timxb/5520/ho/JubinDARPA.pdf The DARPA Packet Radio Network Protocols] - from 1987, describes a relatively late version of the system
 * [https://sarwiki.informatik.hu-berlin.de/DARPA_Packet_Radio_Network DARPA Packet Radio Network]

@@ Line 25: / Line 25: @@
 * [https://www.rfc-editor.org/ien/ien78.pdf Internetwork Experiments with the Bay Area Packet Radio Network]
 * [https://www.rfc-editor.org/ien/ien138.pdf Initial Comparison of EPRs and IPRs in the Pup Internet Environment]
 * [https://ed-thelen.org/comp-hist/CORE-3-1-SRI-TCP-IP.html The SRI Van and Computer Internetworking]
 * [https://www.computerhistory.org/collections/catalog/X1590.99 SRI Mobile Van] - a key element of the first packet radio network

@@ Line 23: / Line 23: @@
 * [https://morse.colorado.edu/~timxb/5520/ho/JubinDARPA.pdf The DARPA Packet Radio Network Protocols] - from 1987, describes a relatively late version of the system
 * [https://sarwiki.informatik.hu-berlin.de/DARPA_Packet_Radio_Network DARPA Packet Radio Network]
 * [https://www.rfc-editor.org/ien/ien78.pdf Internetwork Experiments with the Bay Area Packet Radio Network]
 * [https://www.rfc-editor.org/ien/ien138.pdf Initial Comparison of EPRs and IPRs in the Pup Internet Environment]
 * [http://ana-3.lcs.mit.edu/~jnc/tech/mos/dsp/ DSP] - source code (in [[MACRO-11]]) for SPP in the [[Terminal Interface Unit‎]]
 [[Category: Networking]]

@@ Line 27: / Line 27: @@
 * [https://www.rfc-editor.org/ien/ien138.pdf Initial Comparison of EPRs and IPRs in the Pup Internet Environment]
 * [http://ana-3.lcs.mit.edu/~jnc/tech/mos/dsp/ DSP] - source code (in [[MACRO-11]]) for SPP in the [[Terminal Interface Unit‎]]
 [[Category: Networking]]

@@ Line 1: / Line 1: @@
 The '''Packet Radio Network''' was a program set up by [[DARPA]] in 1973 to explore the possibility of an ad-hoc [[data network]] using wireless links. It was perhaps most important as one of several [[physical network]] technologies being explored by DARPA, the need to interconnect which caused DARPA to work on [[internetwork]]ing, which led to the development of the [[TCP/IP]] [[protocol family]], used in today's [[Internet]].
-The network included 'Packet Radio Units' (PRUs), which included all the actual radio [[electronic]]s, along with a [[microprocessor]] to implement the [[protocol]] used  for controlling the transmission of [[packet]]s between PRUs. These are connected via radio in an ad-hoc network, structured as a [[tree]] (in connectivity terms, ''not'' geography) based on a special node, the 'station' in the prototype, a [[PDP-11/40]] running [[ELF operating system|ELF]], connected to a PRU), which is responsible for overall monitoring and control of the network (called PRNET).
+The network included 'Packet Radio Units' (PRUs), which included all the actual radio [[electronic]]s, along with a [[microprocessor]] to implement the [[protocol]] used  for controlling the transmission of [[packet]]s between PRUs. These are connected via radio in an ad-hoc network, structured as a [[tree]] (in connectivity terms, ''not'' geography) based on a special node, the 'station' (in the prototype, a [[PDP-11/40]] running [[ELF operating system|ELF]], connected to a PRU), which is responsible for overall monitoring and control of the network (called PRNET).
 [[Host]]s connected to PRUs by use of an [[1822 interface]], as used to connect to [[ARPANET]] [[Interface Message Processor|IMP]]s. ([[HDLC]] was much later substituted for 1822 as the physical channel for talking to the later version of the PRUs.)

← Older revision		Revision as of 22:20, 2 November 2021
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	Major participants included [[Bolt, Beranek, and Newman\|BBN]], which produced the station, and the [[router\|gateways]] to connect the PRNET to other networks; [[SRI International\|SRI]], which created the [[Terminal Interface Unit‎]] as a test user host for the PRNET; and Rockwell International's Collins division, which was responsible for the Packet Radio Units.		Major participants included [[Bolt, Beranek, and Newman\|BBN]], which produced the station, and the [[router\|gateways]] to connect the PRNET to other networks; [[SRI International\|SRI]], which created the [[Terminal Interface Unit‎]] as a test user host for the PRNET; and Rockwell International's Collins division, which was responsible for the Packet Radio Units.
		+
		+	==See also==
		+
		+	* [[Terminal Interface Unit]]

	==Further reading==		==Further reading==

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 [[Host]]s connected to PRUs by use of an [[1822 interface]], as used to connect to [[ARPANET]] [[Interface Message Processor|IMP]]s ([[HDLC]] was much later substituted for 1822 as the physical channel for talking to the later version of the PRUs). However, rather than the [[Host-to-IMP Protocol]] used by the IMPs, PRUs used an alternative, the 'Channel Access Protocol' (CAP), which also includes some of the control mechanisms of the PRNET. CAP packets held up to 116 16-bit [[word]]s of [[user]] data, and an 11 word CAP header. On top of CAP, which is hop-by-hop, there was another layer, the 'Station to PRU Protocol' (SPP), which operated between the PRUs which were the overall source and destination of a given packet.
-Major participants included [[Bolt, Beranek, and Newman|BBN]], which produced the [[router|gateways]] to connect the PRNET to other networks; [[SRI International|SRI]], which created the [[Terminal Interface Unit‎]] as a test user host for the PRNET; and Rockwell International's Collins division, which was responsible for the Packet Radio Units.
+Major participants included [[Bolt, Beranek, and Newman|BBN]], which produced the station, and the [[router|gateways]] to connect the PRNET to other networks; [[SRI International|SRI]], which created the [[Terminal Interface Unit‎]] as a test user host for the PRNET; and Rockwell International's Collins division, which was responsible for the Packet Radio Units.
 ==Further reading==