Milestone-Proposal:ALOHANET (aka ALOHA System)

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Docket #:2018-09

This Proposal has been approved, and is now a Milestone


To the proposer’s knowledge, is this achievement subject to litigation? No

Is the achievement you are proposing more than 25 years old? Yes

Is the achievement you are proposing within IEEE’s designated fields as defined by IEEE Bylaw I-104.11, namely: Engineering, Computer Sciences and Information Technology, Physical Sciences, Biological and Medical Sciences, Mathematics, Technical Communications, Education, Management, and Law and Policy. Yes

Did the achievement provide a meaningful benefit for humanity? Yes

Was it of at least regional importance? Yes

Has an IEEE Organizational Unit agreed to pay for the milestone plaque(s)? Yes

Has an IEEE Organizational Unit agreed to arrange the dedication ceremony? Yes

Has the IEEE Section in which the milestone is located agreed to take responsibility for the plaque after it is dedicated? Yes

Has the owner of the site agreed to have it designated as an IEEE Milestone? Yes


Year or range of years in which the achievement occurred:

1966 - 1971. Activated June 1971

Title of the proposed milestone:

Development and Demonstration of the ALOHA Random Access Protocol - 1966 - 1971

Plaque citation summarizing the achievement and its significance:

Plaque citation summarizing the achievement and its significance:

The ALOHA wireless packet radio data network provided the first demonstration that communications channels could be effectively and efficiently shared using relatively simple random access protocols. ALOHA contradicted many then commonly held assumptions about random access channels and led directly to the development of random access protocols such as Carrier Sense Multiple Access and communications technologies such as Ethernet and Wi-Fi.

(60 words)

In what IEEE section(s) does it reside?

IEEE Hawaii Section

IEEE Organizational Unit(s) which have agreed to sponsor the Milestone:

IEEE Organizational Unit(s) paying for milestone plaque(s):

Unit: IEEE Hawaii Section
Senior Officer Name: Kishore Erukulapati

IEEE Organizational Unit(s) arranging the dedication ceremony:

Unit: IEEE Hawaii Section
Senior Officer Name: Kishore Erukulapati

IEEE section(s) monitoring the plaque(s):

IEEE Section: IEEE Hawaii Section
IEEE Section Chair name: Kishore Erukulapati

Milestone proposer(s):

Proposer name: John Imperial
Proposer email: Proposer's email masked to public

Please note: your email address and contact information will be masked on the website for privacy reasons. Only IEEE History Center Staff will be able to view the email address.

Street address(es) and GPS coordinates of the intended milestone plaque site(s):

2540 Dole Street, Holmes Hall, Honolulu, Hawaii 9682221.29681 N, 157.81657 W

Describe briefly the intended site(s) of the milestone plaque(s). The intended site(s) must have a direct connection with the achievement (e.g. where developed, invented, tested, demonstrated, installed, or operated, etc.). A museum where a device or example of the technology is displayed, or the university where the inventor studied, are not, in themselves, sufficient connection for a milestone plaque.

Please give the address(es) of the plaque site(s) (GPS coordinates if you have them). Also please give the details of the mounting, i.e. on the outside of the building, in the ground floor entrance hall, on a plinth on the grounds, etc. If visitors to the plaque site will need to go through security, or make an appointment, please give the contact information visitors will need. Intended site of the milestone plaque is where ALOHANET (aka ALOHA System) was developed, invented, tested, and demonstrated.First public demonstration of a wireless packet network and random access protocols was activated on June 1971.Site is the University of Hawaii College of Engineering - Holmes Hall

Are the original buildings extant?

Yes

Details of the plaque mounting:

Exact location is to be yet to be determined. Milestone plaque will be mounted on the outside of the concrete building, ground floor.

How is the site protected/secured, and in what ways is it accessible to the public?

Holmes Hall is the College of Engineering Building on the University of Hawaii at Manoa campus and provides unobstructed access to general public

Who is the present owner of the site(s)?

University of Hawaii

What is the historical significance of the work (its technological, scientific, or social importance)?

The following terminology delineates the three components of the ALOHAnet (aka ALOHA System): ALOHAnet: Comprised of the ALOHA protocol and the ALOHA System; ALOHA System: Comprised of a mainframe computer, remote terminals, terminal connection units, and radio equipment; ALOHA protocol: random access-based packet protocol.

ALOHA acronym was derived from Additive Links On-line Hawaii Area.

ALOHAnet (aka ALOHA System) contributed to the advancement in the areas of: communications protocols, computer systems engineering, network engineering., and network access medium (RF).

ALOHAnet (aka ALOHA System) is the worlds’ first packet radio network whereas ARPANET is the world’s first packet switching network.

In June 1971, what the world takes for granted today, ALOHAnet (aka ALOHA System) was the first operational computer network system to establish the following firsts: a) use a random access protocol (ALOHA) that was not extant before; b) use of RF medium (wireless); c) broadcast across a shared access medium. It was utilized an experimental UHF frequency granted by the US military since the FCC banned ALOHA original request. As Dr. Norman Abramson stated he did not envision nor consider commercial use since that meant challenging FCC regulations; FCC regulations at the time banned RF spectrum for commercial use and application.

Ubiquitous communications used today (wireless, wired, cellular, computer, mobile, satellite) are based upon the ALOHA protocol and the ALOHA System. ALOHAnet served as the inspiration for the ARPA initiated PRNET project in 1973, which led to packet based radios and even amateur packet based radios. This in turn led to commercial cellular and IEEE 802.11 wireless, along with other non-cellular wireless technologies (e.g., IEEE 802.15.4 Zigbee, Bluetooth). Robert Metcalfe credited ALOHA for his work on the Ethernet and CSMA/CD protocol.

ALOHAnet (aka ALOHA system) introduced a number of firsts in the areas of communications protocols and computer networks: the use of packets in the ALOHA protocol; introduced the use of random access in the ALOHA protocol; introduced the use of shared medium access in the ALOHA network; introduced the use of wireless computer communications (enabled by an experimental UHF frequency).

The ALOHAnet (aka ALOHA System) was comprised of two components: The ALOHA protocol and the ALOHA System. Together, they formed the network known as the ALOHAnet or ALOHANET. The ALOHAnet or ALOHA network was the “first wireless packet data network” that introduced ALOHA random access-a new method of accessing a communication medium and used experimental high frequency.

ALOHAnet (aka ALOHA system) introduced a number of firsts in the areas of communications protocols and computer networks: the use of packets in the ALOHA protocol; introduced the use of random access in the ALOHA protocol; introduced the use of shared medium access in the ALOHA network; introduced the use of wireless computer communications (enabled by an experimental UHF frequency).


Prior to the ALOHA protocol, there was no random access protocol and no computer systems engineering, much less software engineering. The oldest packet switching technique, X.25, was created in the 1970s. There was only the field of computer science consisting of mathematics and computer programming. Network engineering simply did not exist: ARPAnet and ALOHAnet (aka ALOHA System) were the pioneers. ALOHAnet (aka ALOHA System) preceded ARPAnet as an operational computer network. More importantly, ALOHAnet utilized RF medium (wireless) rather than a wired medium that was utilized by ARPAnet. The concept of a hub, where all ports broadcast simultaneously the same information simply did not exist during the 1966-1971 timeframe. A specific host could communicate directly with another specific host via a circuit-based connection (satcom or wired). ALOHAnet (aka ALOHA System) was not based nor utilized circuit-based connections.

The use of RF as a network access medium also did not exist since there were no networks at the time and the FCC banned the use of the radio frequency spectrum for commercial use and application. ALOHAnet (aka ALOHA System) had its initial experimental request for RF spectrum use rejected by the FCC.

Prior to the ALOHA protocol, there was no existing packet-switching or packet-based protocols. The oldest packet switching technique, X.25, was created in the 1970s, well after the ALOHA protocol. X.25 was developed by the common carriers in the 1970s and approved in 1976 by the CCITT, the precursor of the ITU. X.25 was designed for analog telephone transmission over copper wire, in contrast to the ALOHA protocol that while originally designed for RF (i.e., wireless transmission) could also be used for wired transmissions. This was the basis for Bob Metcalfe’s CSMA/CD protocol upon which Ethernet relies upon. It also provided the basis for the CSMA/CA protocol which all wireless protocols rely upon.

The ALOHA protocol was the first random access protocol for accessing a communication medium (wired or wireless) based upon radio packet broadcasting. There was no random access protocol in existence prior to the introduction of the ALOHA protocol. Robert Metcalfe created the Ethernet and the CSMA/CD protocol based on the ALOHA protocol. The ALOHA protocol was the first to be based upon the use of packets and random access. ALOHA protocol mechanism was not packet switching; it was packet broadcasting. The ALOHA technique opened up the entire field of packet broadcasting. When ALOHAnet (aka ALOHA System) became operational in June 1971, the satellite broadcasting field was still new and largely untested. The most significant and promising application of the ALOHA technique was in satellite packet broadcasting. The design of the ARPA Satellite System used a variation of the pure ALOHA technique to make feasible the sharing of a single satellite channel or transponder among a large number of users on a random access basis. The satellite channel can be regarded as a resource which can be shared by many users. It is this resource-sharing enabled by the ALOHA technique or protocol that significantly lowered the cost of data transmission. NASA satellite ATS-1 operationally used the only burst-mode packet broadcasting satellite channel in operation at that time.

It was an experimental RF network since any commercial use or application of the RF frequency spectrum was banned at the time by the Federal Communications Commission (FCC). Dr. Abramson stated to IPTO in 1969 that the constraint of one communication channel per user in radio communications seemed unduly limiting. In an ALOHA a single broadcast channel is shared by a number of communicating devices . In the version originally described by Abramson, every device transmits its packets independent of any other device or any specific time . That is, the device transmits the whole packet a t a random point in time ; the device then times out for receiving an acknowledgment. If an acknowledgment is not received, it is assumed that a collision occurred with a packet transmitted by some other device and the packet is retransmitted after a random additional waiting time (to avoid repeated collisions) . Under a certain set of assumptions, Abramson showed that the effective capacity of such a channel is l/(2e) .

ALOHAnet served as the inspiration for the ARPA initiated PRNET project in 1973. Since radio circuits inherently possess a broadcast network topology (i.e., many or all nodes are connected to the network simultaneously), one of the first technical challenges faced in the implementation of packet radio networks was a means to control access to a shared communication channel. Professor Norman Abramson of the University of Hawaii led development of a packet radio network known as ALOHAnet and performed a number of experiments beginning in the 1970s to develop methods to arbitrate access to a shared radio channel by network nodes. This system operated on UHF frequencies at 9,600 baud. From this work the Aloha multiple access protocol was derived. Subsequent enhancements in channel access techniques made by Leonard Kleinrock et al. in 1975 would lead Robert Metcalfe to use carrier sense multiple access (CSMA) protocols in the design of the now commonplace Ethernet local area network (LAN) technology. Over 1973–76, DARPA created a packet radio network called PRNET in the San Francisco Bay area and conducted a series of experiments with SRI to verify the use of ARPANET (a precursor to the Internet) communications protocols (later known as IP) over packet radio links between mobile and fixed network nodes.[1] This system was quite advanced, as it made use of direct sequence spread spectrum (DSSS) modulation and forward error correction (FEC) techniques to provide 100 Kbit/s and 400 Kbit/s data channels. These experiments were generally considered to be successful, and also marked the first demonstration of Internetworking, as in these experiments data was routed between the ARPANET, PRNET, and SATNET (a satellite packet radio network) networks. Throughout the 1970s and 1980s, DARPA operated a number of terrestrial and satellite packet radio networks connected to the ARPANET at various military and government installations.

As stated above, Dr. Norman Abramson deliberately kept the ALOHAnet (aka ALOHA System) as an experimental network to avoid dealing with the FCC. IPTO was instrumental in obtaining permission from the Department of Defense for use of an experimental military UHF frequency since the FCC initially denied ALOHAnet use of any RF frequency spectrum. Amateur Packet Radio began in 1978 when amateur packet radios began experimenting in 1978 after obtaining permission from the Canadian government. In 1980, the FCC granted authorization for US amateurs to transmit ASCII codes via amateur radio. By 1983, TAPR was offering the first TNC available in kit form. Packet radio started becoming more and more popular across North America and by 1984 the first packet-based bulletin board systems began to appear. Packet radio proved its value for emergency operations following the crash of an Aeromexico airliner in a neighborhood in Cerritos, California Labor Day weekend, 1986. Volunteers linked several key sites to pass text traffic via packet radio which kept voice frequencies clear. Commercial operators took note and this led to the rapid development of a number of commercial packet radios systems: MDI (1979); DCS (1984); DRN (1986); Mobitex (1986); ARDIS (1990); CDPD allowed packet data to be carried over AMPS analog cellular telephone networks (1G); GPRS is the packet data facility provided by the GSM cellular telephone network (2.5).

At that time the only conventional method of remote access to a large information processing system was limited to wire communications — either leased lines or dial-up telephone connections. The Hawaiian Islands are comprised of islands separated geographically by water. The University of Hawaii system consists of: a main campus on the island of Oahu; a four-year campus on the island of Hawaii; five two-year community colleges on the islands of Oahu, Kauai, Maui, and Hawaii; and a number of research institutes with operating units distributed throughout the state. All of the University of Hawaii facilities while residing on different islands, are within a radius of 200 miles from the main campus located on the island of Oahu. Linking all these various sites via dial-up telephone lines for computer communications was consuming the lion’s share of the University’s computing budget. The goal of the ALOHAnet (aka ALOHA System) was to connect these geographically separated facilities with relatively low-cost commercially available radio equipment. This civilian need to provide distributed access to a university’s central computing facility obviously resonated with potential military applications. Indeed, upon the operational demonstration of ALOHAnet in June 1971, PRNET came to fruition also under DARPA funding leading further discussed below.

The ALOHA System was the first star, or hub-and-spoke configuration to use shared access medium. Within “the first wireless random access packet-based protocol”, the ALOHA system introduced three (3) firsts: packets; shared access medium; non-licensed use of the RF frequency spectrum. During the 1966-1973 timeframe, computer communications were limited to a single host directly connected via a single wired-circuit or single RF satellite connection to another single specific host. Thus, hub-and-spoke or star network connectivity connections consisted of a single channel on a single circuit. In contrast, ALOHAnet (aka ALOHA System) utilized a two-channel star configuration; it utilized two different RF frequencies for inbound and outbound (analogy here is the uplink and downlink frequencies for today’s cellular networks). The simultaneous use of two different frequencies also allowed full-duplex, another feature of today’s computer and cellular networks; in contrast, IEEE 802.11 Wi-Fi is half-duplex.

In December 1972, ALOHAnet received a call to prepare to install IMP equipment to connect to the ARPAnet via satellite. The University of Hawaii at Manoa IBM 360 mainframe became the first ARPAnet node to be connected via satellite. This allowed connectivity between ALOHAnet and ARPAnet. At this point, the ALOHAnet group turned its attention to using ALOHA channels on a satellite network —PACNET started as the first packet-broadcasting satellite network in 1973; it linked sites in Alaska, Australia, California and Japan, Australia. PACNET utilized the ALOHA protocol.

Inspired by ALOHAnet “ARPA initiated the PRNET project in 1973, funding both theoretical and experimental research. Its goals were outlined by Bob Kahn, namely, to investigate the feasibility of using packet-switched, store-and-forward radio communications to provide reliable computer communications in a mobile environment.” PRNET goal was to address a significantly harder set of problems not addressed by ALOHAnet; specifically, multi-hop communications between mobile vehicles without a central station. PRNET was first established under the auspices of SRI with BBN contributing network technology and Collins creating the Experimental Packet Radios (EPRs), which implemented L-Band spread-spectrum waveforms and supported half-duplex communications at 100 or 400 kilobits/second. A smaller network at BBN was used for software development and testing. Robert Kahn stated, “The ALOHA system was to packet radio like the original timesharing computer was to Arpanet”.

What obstacles (technical, political, geographic) needed to be overcome?

The ALOHA Protocol is the communications foundation for a variety of applications involving joint use of a given medium by potentially interfering systems, and laid the foundation for mobile, wireless, satellite, and Internet communications as we know it today. The protocol, in its most concise form, says transmit at will. If interference is detected, retransmit some random time later. What can be simpler? Yet, despite its apparent simplicity, such a protocol was not at all obvious at the time of its invention and initial deployment. ALOHA packet systems were originally described by Abramso n ("The ALOHA System--Another Alternative for Compute r Communication," Proceedings of the AFIPS Fall Joint Compute r Conference, Vol . 37, 1970, pp . 281-285) . In an ALOHA a singl e broadcast channel is shared by a number of communicating devices . In the version originally described by Abramson, every devic e transmits its packets independent of any other device or an y specific time . That is, the device transmits the whole packet a t a random point in time ; the device then times out for receivin g an acknowledgment . If an acknowledgment is not received, it i s assumed that a collision occured with a packet transmitted b y some other device and the packet is retransmitted after a rando m additional waiting time (to avoid repeated collisions) . Under a certain set of assumptions, Abramson showed that the effectiv e capacity of such a channel is l/(2e) .

TECHNICAL The basic idea was radio communications – as an alternative to telephones. Radio communications is a broadcast medium and allows things to be performed via multiple access. As Dr. Norman Abramson stated, “Well, we don't have to be limited to one channel per user. We could do some more efficient things with radio." "Something much more sensible for radio can be done here than assigning a single channel for every user in the network. That's crazy. That won't work." "Look, we can't assign one channel per user. We want to think about -- although we may never build it - - we want to think about a system with hundreds of users, something practical for that. You can't have hundreds of channels. Now what can you do for that situation?" I and others were aware of the spread spectrum and multiple access through spread spectrum at that point, and the idea of simply transmitting the data in bursts was sort of a natural one. The telephone system, especially then in Hawaii, was inadequate for data and appeared not to make sense at that time. ALOHAnet became operational in June,1971, providing the first public demonstration of a wireless packet data network. POLITICAL In 1966, when Dr. Norman Abramson came to the University of Hawaii, there was very little research activity, much less funded-research activity. Dr. Norman Abramson got the University of Hawaii funded under Project THEMIS – a Department of Defense program to support developing, second-rank or have-not universities with research funds. At this point in time, Project THEMIS provided the largest amount of research project funds that the University of Hawaii had ever received to fund the ALOHA System. One of the reasons was certainly that -- my impression, and I think this was common in a lot of people, was that to do something different with radio communications means that sooner or later, you're going to have to fight the FCC, and I didn't want to do that. I was faculty, a professor, and I truly felt I had no capability in that kind of area and I wouldn't do very well at it, so I really couldn't see myself as trying to shake up the FCC and have them change their rules. That meant that I was thinking of operating under the existing rules, and Aloha wouldn't allow you to operate under existing rules. As a research project, it was quite interesting, but to look further to operational and commercial systems GEOGRAPHIC The goal was to use low-cost commercial radio equipment to connect users on Oahu and the other Hawaiian Islands with a central time-sharing computer on the main Oahu campus.

What features set this work apart from similar achievements?

Research in THE ALOHA SYSTEM was divided into two major tasks: (1) to study and develop advanced forms of computer-communications networks using random-access packet switching methods (Task I) and (2) to conduct general studies of multiprocessor system organization centered on the development of the BCC 500 computer (Task II). ALOHAnet used two channels a5 407.350 MHz and at 413.475 MHz in the UHF band. The channels operated at 9600 baud. The radio channel, when used in a burst rand-access mode, is known as an ALOHA channel. The ALOHA technique opened up the entire field of packet broadcasting.

As described above, the ALOHA protocol was the first random access protocol and the ALOHA System provided Robert E Kahn the foundation in the development of PRNET to solve a number of significantly challenging problems in both theoretical and experimental research. Robert Metcalfe based his Ethernet and CSMA/CD protocol on the prior research of the ALOHA protocol. Random access schemes dynamically assign radio resources to a large set of users, each with relatively bursty traffic.

Prior to the ALOHA System, a single host could communicate directly via a circuit-based wire or satcom connection only with another specific host. The ALOHA system demonstrated the radio broadcast via a shared medium; in simpler terms, a host could broadcast (i.e., speak to multiple hosts) via a shared medium (i.e., air medium via RF communications). Since the ALOHA protocol was packet-based, it did not require an “always-on” connection and did not require a dedicated analog circuit. The use of packets allowed networks to be viewed as discontinuous, digital systems that transmit data in small packets only when required.

At that time the only conventional method of remote access to a large information processing system was limited to wire communications — either leased lines or dial-up telephone connections. The Hawaiian Islands are comprised of islands separated geographically by water. The University of Hawaii system consists of: a main campus on the island of Oahu; a four-year campus on the island of Hawaii; five two-year community colleges on the islands of Oahu, Kauai, Maui, and Hawaii; and a number of research institutes with operating units distributed throughout the state. All of the University of Hawaii facilities while residing on different islands, are within a radius of 200 miles from the main campus located on the island of Oahu. The goal of the ALOHAnet (aka ALOHA System) was to connect these geographically separated facilities with relatively low-cost commercially available radio equipment.

Project THEMIS was established by the Department of Defense to fund research to “the improvement of centers that existed but were not the top producers in the particular field of endeavor”. Dr. Norman Abramson was instrumental in obtaining Project THEMIS funding during FY 67 with actual research beginning in the fall semester of academic year 1967-1968. The ALOHAnet (aka ALOHA System) was funded under Project THEMIS. Dr. Norman Abramson was instrumental in the IPTO Director, Bob Taylor, approving PROJECT THEMIS funding. A 1969 IPTO meeting established an important decision for the ALOHA protocol: “To directly transmit user information in a single high speed packet burst, now known as an ALOHA channel was made. That is, every terminal would transmit its data to the host using the same radio channel. If collisions occurred, a terminal would receive an acknowledgement and would re-transmit. No terminal had its own dedicated broadcast channel: all terminals would use the same channel.”

In an ALOHA a single broadcast channel is shared by a number of communicating devices. In the version originally described by Abramson, every device transmits its packets independent of any other device or any specific time . That is, the device transmits the whole packet at a random point in time; the device then times out for receiving an acknowledgment . If an acknowledgment is not received, it is assumed that a collision occurred with a packet transmitted by some other device and the packet is retransmitted. after a random additional waiting time (to avoid repeated collisions) . Under a certain set of assumptions, Abramson showed that the effective capacity of such a channel is l/(2e) .

ALOHAnet was asymmetric consisting of remote terminals connected to a central computing facility. Traffic on the outgoing ALOHA channel from the main central facility to the remote terminals was handled differently from traffic on the inbound ALOHA channel to the main central facility from the remote terminals. This approach was chosen to allow each terminal to have access of the full speed of the ALOHA channel rather than dividing the channel up into small, slow segments for each terminal. This randomness was the key feature of ALOHAnet because the main reason for packet loss was too many terminals talking all at once.

At the time, there was a lot of synergy between ARPANET and ALOHAnet; both were the only networks at the time, and both were funded by DARPA. ARPANET became the world’s first packet switching network. ALOHAnet became the worlds’ first packet radio network.

ALOHAnet built their own “Menehune” to handle packets in and out of the mainframe. “Menehune” was inspired by ARPAnet’s Interface Message Processors (IMPs). Both IMPs and Menehune were necessary to handle the asymmetry between the mainframe and the remote terminals. ALOHAnet became operational in June 1971 with a Menehune installed at the University of Hawaii at Manoa main campus and its first remote terminal in Abramson’s home about a mile from the university. By the end of 1971, there was connectivity to four remote terminals and soon thereafter, connectivity was provided to several hundred users. The development/advancement of the radio equipment were crucial to reaching the outlying islands of Kauai, Maui, and Hawaii from the main University of Hawaii campus located on Oahu.

Supporting texts and citations to establish the dates, location, and importance of the achievement: Minimum of five (5), but as many as needed to support the milestone, such as patents, contemporary newspaper articles, journal articles, or chapters in scholarly books. 'Scholarly' is defined as peer-reviewed, with references, and published. You must supply the texts or excerpts themselves, not just the references. At least one of the references must be from a scholarly book or journal article. All supporting materials must be in English, or accompanied by an English translation.

N. Abramson, "Development of the ALOHANET," in IEEE Transactions on Information Theory, vol. 31, no. 2, pp. 119-123, March 1985.�doi: 10.1109/TIT.1985.1057021 M. Schwartz and N. Abramson, "The Alohanet - surfing for wireless data [History of Communications]," in IEEE Communications Magazine, vol. 47, no. 12, pp. 21-25, Dec. 2009.�doi: 10.1109/MCOM.2009.5350363 Abramson, N. 1982. "Fundamentals of Packet Multiple Access for Satellite Networks," IEEE Journal on Selected Areas in Communications 10(2):309-316. Entrepreneurial Capitalism & Innovation: �A History of Computer Communications �1968 - 1988�By James Pelkey https://www.computer.org/csdl/proceedings/afips/1975/5083/00/50830203.pdf

Managing Requirements Knowledge, International Workshop on ...

 ALOHA packet broadcasting - A retrospect
 Year: 1975, Volume: 1, Pages: 203
 DOI Bookmark:10.1109/AFIPS.1975.17
 Authors: R. Binder  / N. Abramson / F. F. Kuo / A. Okinaka / D. Wax

https://apps.dtic.mil/dtic/tr/fulltext/u2/a122775.pdf

ALOHA PACKET SYSTEM With and Without Slots.pdf

http://www.wirelesscommunication.nl/reference/chaptr06/randacc.htm

UCSC Recognition -ALOHANet (aka ALOHA System).png

https://www.clear.rice.edu/comp551/papers/Abramson-Aloha.pdf THE ALOHA SYSTEM—Another alternative for computer communications* by NORMAN ABRAMSON University of Hawaii Honolulu, Hawaii

https://apps.dtic.mil/dtic/tr/fulltext/u2/a098684.pdf COMPUTER NETWORKS – THE ALOHA SYSTEM

https://www.cybertelecom.org/notes/internet_history70s.htm ALOHANet July: Norman Abramson builds ALOHANet, using DARPA and NAVY funding. [Nerds 2.0.1] [Roberts, Computer Science Museum 1988] ARPA provides a Terminal Interface Processor to ALOHANet [Nerds p 103] [Roberts, Net Chronology] [Abbate p 115] ALOHAnet became operational in 1971. Lore has it that Abramsom primarily wanted to go surfing. Design objectives: "The original goal of the Aloha System was to investigate the use of radio communications as an alternative to the telephone system for computer communications and to “determine those situations where radio communications are preferable to conventional wire communications”" [Abramson 2009]

THE_ALOHA_SYSTEM_another_alternative_for_computer_.pdf [Abramson 1970]

http://www.ijesrt.com/issues%20pdf%20file/Archive-2018/May-2018/36.pdf

Project THEMIS ALOHANET IPTO.pdf

https://www.slideshare.net/nwrusa/history-of-wireless-networking

Statement of Support from Robert Metcalfe

Supporting materials (supported formats: GIF, JPEG, PNG, PDF, DOC): All supporting materials must be in English, or if not in English, accompanied by an English translation. You must supply the texts or excerpts themselves, not just the references. For documents that are copyright-encumbered, or which you do not have rights to post, email the documents themselves to ieee-history@ieee.org. Please see the Milestone Program Guidelines for more information.

Computer History Museum Interview of Norman “Norm” Abramson Interviewed by: James L. Pelkey Recorded: October 13, 1988 Menlo Park, California http://archive.computerhistory.org/resources/access/text/2013/05/102746645-05-01-acc.pdf

Milestone supporting documentaton; Computer History Museum

Milestone supporting documentation. Certmag

ALOHANET: The World's First Wireless LAN Posted on January 31, 2007 by cmadmin

https://www.youtube.com/watch?v=y72gYcQeais YouTube link addressing ALOHANET (in Chinese)

https://youtu.be/0DF6ekaFC8U

https://www.youtube.com/watch?v=vLxEZtl1iAQ (in Hindi)

https://www.youtube.com/watch?v=y72gYcQeais (in Chinese)

https://apps.dtic.mil/dtic/tr/fulltext/u2/a122775.pdf

https://disco.ethz.ch/alumni/pascalv/refs/rn_1975_roberts.pdf

http://www.wirelesscommunication.nl/reference/chaptr06/randacc.htm

UCSC Recognition - ALOHANET (aka ALOHA System).png

https://www.clear.rice.edu/comp551/papers/Abramson-Aloha.pdf THE ALOHA SYSTEM—Another alternative for computer communications* by NORMAN ABRAMSON University of Hawaii Honolulu, Hawaii

https://apps.dtic.mil/dtic/tr/fulltext/u2/a098684.pdf COMPUTER NETWORKS – THE ALOHA SYSTEM

https://www.cybertelecom.org/notes/internet_history70s.htm ALOHANet July: Norman Abramson builds ALOHANet, using DARPA and NAVY funding. [Nerds 2.0.1] [Roberts, Computer Science Museum 1988] ARPA provides a Terminal Interface Processor to ALOHANet [Nerds p 103] [Roberts, Net Chronology] [Abbate p 115] ALOHAnet became operational in 1971. Lore has it that Abramsom primarily wanted to go surfing. Design objectives: "The original goal of the Aloha System was to investigate the use of radio communications as an alternative to the telephone system for computer communications and to “determine those situations where radio communications are preferable to conventional wire communications”" [Abramson 2009]

THE_ALOHA_SYSTEM_another_alternative_for_computer_.pdf [Abramson 1970] This one is 23 pages; other reference above with almost similar name is only 6 pages

http://www.ijesrt.com/issues%20pdf%20file/Archive-2018/May-2018/36.pdf International Journal of Engineering Sciences & Research Technology A Survey On ALOHA Protocol for IoT Based Applications Shikha Badgotya & Prof. Deepti Rai Alpine Institute of Technology, Ujjain, India DOI: 10.5281/zenodo.1246995

Project THEMIS ALOHANET IPTO.pdf Naval Research Reviews: Volume 20 January 1, 1967 The Office

https://www.slideshare.net/nwrusa/history-of-wireless-networking

Statement of Support - Robert Metcalfe StatementofSupport-RobertMetcalfe.pdf

Please email a jpeg or PDF a letter in English, or with English translation, from the site owner(s) giving permission to place IEEE milestone plaque on the property, and a letter (or forwarded email) from the appropriate Section Chair supporting the Milestone application to ieee-history@ieee.org with the subject line "Attention: Milestone Administrator." Note that there are multiple texts of the letter depending on whether an IEEE organizational unit other than the section will be paying for the plaque(s).