Jump to content

Talk:IEEE 802.11: Difference between revisions

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia
Browse history interactively
← Previous edit
Content deleted Content added
VisualWikitext
Interference from microwave ovens/portable phones?
m Archiving 2 discussion(s) to Talk:IEEE 802.11/Archive 2) (bot
 
(325 intermediate revisions by more than 100 users not shown)
Line 1: Line 1:
{{talk header|noarchive=yes}}
"Wi-Fi" seems to be the "next big thing" (or one of them), and this is all that Wikipedia has on the subject? This article ([[IEEE 802.11]]) is a very technical discussion of a topic that has several aspects (the whole notion of a wireless home network) that are perfectly accessible to the (relatively) non-technical user.
{{WikiProject banner shell|class=C|1=
{{WikiProject Computing|importance=High|network=yes|network-importance=High}}
{{WikiProject Technology}}
{{WikiProject Electrical engineering|importance=High}}
{{WikiProject Telecommunications |importance=High}}
}}
{{User:MiszaBot/config
|maxarchivesize = 100K
|counter = 2
|minthreadsleft = 4
|algo = old(365d)
|archive = Talk:IEEE 802.11/Archive %(counter)d
}}{{User:HBC Archive Indexerbot/OptIn |target=Talk:IEEE 802.11/Archive index |mask=Talk:IEEE 802.11/Archive <#> |leading_zeros=0 |indexhere=no}}{{archives|search=yes|index=/Archive index|bot=Lowercase sigmabot III|age=365}}


== Dubious use of source [1] ==
Maybe what we should do is reserve [[Wi-Fi]] (which has more hits on Google that [[WiFi]]) for the nontechnical discussion and reserve [[IEEE 802.11]] for description of the technical standard. --[[user:Larry Sanger|Larry Sanger]]


Part of the history section of this article reads:
The text says "Different countries have different ideas about support, although a recent World Radiotelecommunciations Conference" and then suddenly quits. This sounds like it'd be interesting, but I don't know what was intended. Can anyone complete that sentence/thought? -- [[User:Dwheeler|Dwheeler]] 09:15, 2 Aug 2003 (UTC)~


''802.11 technology has its origins in a 1985 ruling by the U.S. Federal Communications Commission that released the ISM band for unlicensed use.
I suppose that pragmatic use of WiFi would be a separate Wikipedia article from [IEEE 802.11]]. -- [[User:Lfwlfw|LarryW]] 14:35, 4 Aug 2003 (UTC)
''


And references source [1]. Neither the [https://standards.ieee.org/about/policies/opman/sect8/ current] nor [https://web.archive.org/web/20150906183258/http://standards.ieee.org/develop/policies/opman/sect8.html archived] version of source [1] actually references 802.11 or any court ruling by name. Should the reference be removed? [[User:Trickypr|Trickypr]] ([[User talk:Trickypr|talk]]) 11:43, 31 May 2022 (UTC)
"Security" section should probably be expanded to show the recent and very serious [[DoS]] exploit that affects certain implementations of the 802.11 standard? [http://www.theregister.co.uk/2004/05/13/wifi_security_flaw/] --[[User:Protactin|Protactin]] 18:59, 16 May 2004 (UTC)


== Spatial Streams ==
== Interference from microwave ovens/portable phones? ==


What exactly is a "spatial stream" ?
I know Wikipedia isn't a tech support site, but perhaps in discussion someone can elaborate on this? I'm about to set up my mom's computer for wireless, as HomePNA devices are no longer sold in most places, but between her computer and my room where the WAP will be, is a microwave oven (not DIRECTLY in-between though) and another phone in the house that utilizes wirelessness (not a cellphone, though), and am wondering if this is going to be a serious problem... --[[User:I am not good at running|I am not good at running]] 06:29, 24 Dec 2004 (UTC)

The term appears in every one of these Wikipedia 802.11 articles, 802.11n,ac,ax, and referenced MIMO links, &tc. (and everywhere else on the internet).
But invariably, the only definitions of the concept are just substitutions of other words, like "multiplexing".
And some hand-waving about doing it with separate antennas.

That doesn't explain even fundamentally what it is and how it's accomplished.
For later 802.11 variants (802.11ax) it's easy to understand segregation of OFDMA subcarrier bands, much like channel bonding, that's a good starting point for the concept.
Otherwise, for earlier 802.11 levels where "spatial stream" originated, what is it, how is it accomplished. Slots, timeslice, request+grants, ''what''
[[Special:Contributions/2601:40D:8100:9400:6972:CAEC:953C:4038|2601:40D:8100:9400:6972:CAEC:953C:4038]] ([[User talk:2601:40D:8100:9400:6972:CAEC:953C:4038|talk]]) 07:09, 20 November 2022 (UTC)

== Dated pictures ==

{{u|Chetvorno}} recently [https://en.wikipedia.org/w/index.php?title=IEEE_802.11&diff=1247585947&oldid=1247467662 replaced] a 1-decade-old picture with a 2-decade-old picture. While the intent is good, we really should try to find something less than 10 years old to use for a lead image. ~[[User:Kvng|Kvng]] ([[User talk:Kvng|talk]]) 14:41, 2 October 2024 (UTC)

:Sounds fine to me. The reason I replaced it, of course, is that the new picture has both a laptop and a wireless router; in one picture it shows nontechnical people an entire wireless network. It was the only one I could find that had both. The picture it replaced was kind of redundant; just another wireless router like the one above it. If someone wants to take a picture of a more recent router and their laptop and replace it, I'm good. --[[User:Chetvorno|Chetvorno]]<sup><small>[[User talk:Chetvorno|<i style="color: Purple;">TALK</i>]]</small></sup> 16:42, 2 October 2024 (UTC)

== ToDS and FromDS ==

On the section "Layer 2 - Datagrams" we see this:
*ToDS = 0 and FromDS = 1
**A frame sent by a station and directed to an AP accessed via the distribution system.
*ToDS = 1 and FromDS = 0
**A frame exiting the distribution system for a station.

Aren't these two definitions inverted? "A frame EXITING the distribution system" isn't by definition FromDS? And "a frame sent by a station DIRECTED to an AP accessed VIA the distribution system?" isn't going ToDS?
Isn't the Distribution System the "outside", the "external internet", the backbone?

Can someone who understands this subject better clarifiy this?
Thank you very much.
[[Special:Contributions/2804:1B3:9442:6FC:B1CE:79A4:A8AA:DBC3|2804:1B3:9442:6FC:B1CE:79A4:A8AA:DBC3]] ([[User talk:2804:1B3:9442:6FC:B1CE:79A4:A8AA:DBC3|talk]]) 15:41, 26 March 2025 (UTC)

Latest revision as of 12:21, 27 March 2025

Dubious use of source [1]

[edit]

Part of the history section of this article reads:

802.11 technology has its origins in a 1985 ruling by the U.S. Federal Communications Commission that released the ISM band for unlicensed use.

And references source [1]. Neither the current nor archived version of source [1] actually references 802.11 or any court ruling by name. Should the reference be removed? Trickypr (talk) 11:43, 31 May 2022 (UTC)[reply]

Spatial Streams

[edit]

What exactly is a "spatial stream" ?

The term appears in every one of these Wikipedia 802.11 articles, 802.11n,ac,ax, and referenced MIMO links, &tc. (and everywhere else on the internet). But invariably, the only definitions of the concept are just substitutions of other words, like "multiplexing". And some hand-waving about doing it with separate antennas.

That doesn't explain even fundamentally what it is and how it's accomplished. For later 802.11 variants (802.11ax) it's easy to understand segregation of OFDMA subcarrier bands, much like channel bonding, that's a good starting point for the concept. Otherwise, for earlier 802.11 levels where "spatial stream" originated, what is it, how is it accomplished. Slots, timeslice, request+grants, what 2601:40D:8100:9400:6972:CAEC:953C:4038 (talk) 07:09, 20 November 2022 (UTC)[reply]

Dated pictures

[edit]

Chetvorno recently replaced a 1-decade-old picture with a 2-decade-old picture. While the intent is good, we really should try to find something less than 10 years old to use for a lead image. ~Kvng (talk) 14:41, 2 October 2024 (UTC)[reply]

Sounds fine to me. The reason I replaced it, of course, is that the new picture has both a laptop and a wireless router; in one picture it shows nontechnical people an entire wireless network. It was the only one I could find that had both. The picture it replaced was kind of redundant; just another wireless router like the one above it. If someone wants to take a picture of a more recent router and their laptop and replace it, I'm good. --ChetvornoTALK 16:42, 2 October 2024 (UTC)[reply]

ToDS and FromDS

[edit]

On the section "Layer 2 - Datagrams" we see this:

  • ToDS = 0 and FromDS = 1
    • A frame sent by a station and directed to an AP accessed via the distribution system.
  • ToDS = 1 and FromDS = 0
    • A frame exiting the distribution system for a station.

Aren't these two definitions inverted? "A frame EXITING the distribution system" isn't by definition FromDS? And "a frame sent by a station DIRECTED to an AP accessed VIA the distribution system?" isn't going ToDS? Isn't the Distribution System the "outside", the "external internet", the backbone?

Can someone who understands this subject better clarifiy this? Thank you very much. 2804:1B3:9442:6FC:B1CE:79A4:A8AA:DBC3 (talk) 15:41, 26 March 2025 (UTC)[reply]

Retrieved from "https://en.wikipedia.org/w/index.php?title=Talk:IEEE_802.11&oldid=1282600018"