Hello, My name is Shunsuke Fujieda,
I have a proposal of making a reference operation plan of emergency
free Wi-Fi on a time of a disaster. Free Wi-FI is not common in some
regions, but it is very useful if they were offered at many places for
neighboring people at the time of a disaster for a short period.
We named this concept as EOI: Emergency Open Internet.
Please see the attached file or the google document.
https://docs.google.com/document/d/19eAMNAF8Muz57C-g0KEoQygLdF8mOieAP1LfDOqn7kM/edit
I'm sorry that my proposal is not yet ID format...
Is this topic suitable for this WG?
And is there anyone who is interested in this topic?
I'll stay in Vancouver until Wednesday.
Please contact me on your convenience time.
Thank you,
Shunsuke
The Concept and Standardization Need of EOI: Emergency Open Internet
Shunsuke Fujieda, The University of Tokyo ([email protected])
<Motivation>
Free wireless LAN is not common in some regions, but it is very useful if they
were offered at many places at the time of a disaster for a short period.
Because wireless LAN is the borderless communication medium that is available
even for foreign tourists. On the Great East Japan Earthquake, some public
wireless LAN carriers opened their access points before long from the outbreak
of the earthquake. However, it took time to publicize the fact and the usage by
their web site or SNS such as Twitter. And although they invalidated security
settings of such free signals, users still had a problem on understanding which
signals were free, because free SSIDs were different by providers and there
were signals without layer2 restrictions but with other restrictions such as
web authentication, MAC address filtering, or layer3 filters to the internet in
a peacetime. In other general organizations, such as in universities, it was
rare if they could open their wireless LAN because they were also in
confusions. Nowadays such organizations also concern with opening their
wireless LAN to the people of the neighborhood at the time of a disaster, but
it becomes the hurdle that there is not a well-known method.
There are 2 reasons why a well-known method for emergency free wireless LAN is
necessary.
1) Time lag: The time on which telecom demands and the influence on mobile
telecom networks are the biggest would be just after the breakout of a
disaster. Even if wireless LANs were opened, if the fact and usage needed to be
announced after the disaster, it is hard to be used on time. Thus common
understanding of EOI by both “providers and users” are needed.
2) Userbility: If opening methods of wireless LANs are individual by providers,
users will need effort to study usages without enough help. And when users move
to another place, other method may be required newly.
<Proposal>
It is out of scope that whether EOI must be provided or not. That will depend
on the situation, country, and point of view. We propose just making a
realistic reference method that can be used right now, to help people who
prepare EOI today. We know this method is not safe, and we are looking forward
to see a better method of EOI becomes available in future.
A) Wireless LAN Configuration
* Authentication: Open System
* Encryption: No Encryption
* ESSID: EOI-XXX
* Each organization must set the part of XXX individually; that can be
individual even by posts.
* ESSID should be announced by beacon.
The reason of dividing SSID into a plural number is,
1) If all organizations set same ESSID (e.g., EOI) and there are several APs by
different organizations on an area, which means that there are several backyard
IP subnets behind APs but clients cannot recognize them. When a client moves
between those APs, it expects same IP subnet behind them. But the IP address
got on former AP is not available in latter AP, thus the client may be
communication unavailable for some periods.
2) Some APs may have trouble on their upper links, and they may not be able to
provide access to the internet even if their signal was alive. We call such AP
"Black Hole AP” which sucks clients. If there are Black Hole APs and working
APs on an area, clients must select working APs anyway, so separation of ESSIDs
are required.
B) Principles
* EOI should be free of charge.
* EOI should be provided for only a limited period during emergency situations.
* The usage and records of the use of EOI must not be used for registration or
the invitation to other services.
C) Start Time and Period[1]
* Target start time: before six hours later from the disaster
* Shortest duration: until 72 hours later from the disaster
* Time to examine the service end: At 72 hours and 2weeks later from the
disaster
Each EOI provider performs judgments of the service end individually. However,
it may obstruct telecom business if we continued free internet services easily
after the situation calmed. Therefore, some phases are defined to examine the
service end as above.
________________
[1] These criteria of timeline are based on instructions about appropriate
actions on a disaster by Japanese government office.
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