Just look at Table 2 column 2 and 4. This 802.11b uses almost the SAME power as BT 4.0 LE!! That is an amazing feat!. So we might see BT 4 uses lowering in future as sustained high data rate is not really possible with BT but wifi b is something else, way more useful!.
These announcements just go into the my garbage if they don't include some kind of price guideline. Why waste time on this if it ends up being $15?
From the press release: "Allows AAA Batteries to be Used for 35 Years". What a pile of manure, AAA battery won't last 35 years without anything connected to it. ]
So basically what we are getting here is Wifi B @ 11mbit while using the same amount of power as Bluetooth @ 1Mbit. Not bad, but doesnt having a legacy 802.11B device on a wifi network kinda slow it down somewhat for the other clients too?
Not if your router isn't terrible :). Just having the device on the network doesn't slow it down; it would only be if the device was consuming all 11Mbit that things would be an issue.
You can gain some performance by configuring your network to completely eschew compatibility with slow devices, but you also lose compatibility with some higher-speed devices that have bugs. It's usually not worth the trouble, but if you've got a lot of devices on your network generating a lot of multicast/broadcast traffic, it eats a lot of airtime at 1Mbps.
Yes it does. Simply allowing 11b devices on the network completely kills the performance of the whole network with the only solution being using 5GHz for anything more serious (which seems like a good idea anyway...)
802.11b is NOT slow. G is slow since it skips frequencies and speeds too often resulting in overhead rather than throughput. b is resilient and reliable!.
Yes and No. It will slow your network at 2.4 Ghz if the IoT device would like to saturate the signal. Yet, it won't slow the network if you majority of your devices are at 5Ghz.
Sadly, Rockchip is impossible to deal with. Just try and get a data sheet out of them. Or a sample. Or, frankly, try to buy the chip in anything less than huge quantities. Impossible. Or try to prototype with it - also, sadly, impossible.
TI, on the other hand, will send you samples for free, and has launchpad boards ready to go for starting a design for very reasonable cost, with full documentation and tools. TI is a wonderful company, and they'll keep on getting design wins just for that reason.
With such small power consumption I guess it wont have very good range, being wifi? Because using an "amp" which draws power kind of defeats the purpose. Other techniques maybe arent that fast but instead usually have ok range.
WTF? Have they completely lost their mind? Sane operators and users nowadays turn off 11b compatibility unless they absolutely need to support vastly outdated legacy devices.
Basically all of the claims are pretty much bogus: With only 20mW output the range will really bad; worse than any of the other standards at the same power level. Also 11Mbps is best case, all other standards reach their maximum performance pretty much all the time. And then there's also the issue of net performance: In IoT devices most of the data sent is going to be small telegrams rather than a stream of big chunks, funny enough even an 11 MBps 11b connection would transmit a plethora of those telegrams over UDP slower than any of the other mentioned protocols due to the horrific overhead and retransmits.
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21 Comments
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MikhailT - Tuesday, June 2, 2015 - link
"The RKi6000 promises huge jumps in power consumption"Umm, phrasing. Jump == increase == higher. More power consumption == bad.
fteoath64 - Thursday, June 4, 2015 - link
Just look at Table 2 column 2 and 4. This 802.11b uses almost the SAME power as BT 4.0 LE!!That is an amazing feat!. So we might see BT 4 uses lowering in future as sustained high data rate is not really possible with BT but wifi b is something else, way more useful!.
mnguyen - Wednesday, July 22, 2015 - link
the actual word is '...in power efficiency' and 'power efficiency' is the opposite of 'power consumption'jonsmirl - Tuesday, June 2, 2015 - link
These announcements just go into the my garbage if they don't include some kind of price guideline. Why waste time on this if it ends up being $15?From the press release: "Allows AAA Batteries to be Used for 35 Years". What a pile of manure, AAA battery won't last 35 years without anything connected to it.
]
BillyONeal - Tuesday, June 2, 2015 - link
Because for some products (e.g. Nest Protect) $15 for the WiFi is reasonable.toyotabedzrock - Tuesday, June 2, 2015 - link
The Nest Protect is a consumer product, this article is about a WiFi chip.fteoath64 - Thursday, June 4, 2015 - link
No way in hell for it to be even $2! This is a sub dollar part!. Hey, you $15 can buy two full SoC modules!.extide - Tuesday, June 2, 2015 - link
So basically what we are getting here is Wifi B @ 11mbit while using the same amount of power as Bluetooth @ 1Mbit. Not bad, but doesnt having a legacy 802.11B device on a wifi network kinda slow it down somewhat for the other clients too?BillyONeal - Tuesday, June 2, 2015 - link
Not if your router isn't terrible :). Just having the device on the network doesn't slow it down; it would only be if the device was consuming all 11Mbit that things would be an issue.wtallis - Tuesday, June 2, 2015 - link
You can gain some performance by configuring your network to completely eschew compatibility with slow devices, but you also lose compatibility with some higher-speed devices that have bugs. It's usually not worth the trouble, but if you've got a lot of devices on your network generating a lot of multicast/broadcast traffic, it eats a lot of airtime at 1Mbps.Daniel Egger - Wednesday, June 3, 2015 - link
Yes it does. Simply allowing 11b devices on the network completely kills the performance of the whole network with the only solution being using 5GHz for anything more serious (which seems like a good idea anyway...)fteoath64 - Thursday, June 4, 2015 - link
802.11b is NOT slow. G is slow since it skips frequencies and speeds too often resulting in overhead rather than throughput. b is resilient and reliable!.zodiacfml - Friday, June 5, 2015 - link
Yes and No. It will slow your network at 2.4 Ghz if the IoT device would like to saturate the signal. Yet, it won't slow the network if you majority of your devices are at 5Ghz.jjj - Tuesday, June 2, 2015 - link
No noise on wifi ad at Computex? Haven't spotted anything on the subject ,thought we'll get some of that this year.hirschma - Tuesday, June 2, 2015 - link
Sadly, Rockchip is impossible to deal with. Just try and get a data sheet out of them. Or a sample. Or, frankly, try to buy the chip in anything less than huge quantities. Impossible. Or try to prototype with it - also, sadly, impossible.TI, on the other hand, will send you samples for free, and has launchpad boards ready to go for starting a design for very reasonable cost, with full documentation and tools. TI is a wonderful company, and they'll keep on getting design wins just for that reason.
toyotabedzrock - Tuesday, June 2, 2015 - link
I have a feeling this chip would not do well in a modern overused 2.4 network.kruppin - Wednesday, June 3, 2015 - link
With such small power consumption I guess it wont have very good range, being wifi? Because using an "amp" which draws power kind of defeats the purpose. Other techniques maybe arent that fast but instead usually have ok range.Daniel Egger - Wednesday, June 3, 2015 - link
WTF? Have they completely lost their mind? Sane operators and users nowadays turn off 11b compatibility unless they absolutely need to support vastly outdated legacy devices.Basically all of the claims are pretty much bogus: With only 20mW output the range will really bad; worse than any of the other standards at the same power level. Also 11Mbps is best case, all other standards reach their maximum performance pretty much all the time. And then there's also the issue of net performance: In IoT devices most of the data sent is going to be small telegrams rather than a stream of big chunks, funny enough even an 11 MBps 11b connection would transmit a plethora of those telegrams over UDP slower than any of the other mentioned protocols due to the horrific overhead and retransmits.
optix_delite - Sunday, June 7, 2015 - link
802.11b is on its way out. Already disallowed on many networks, it's only a matter of time before it disappears, like this chipNick_Lowe - Tuesday, June 23, 2015 - link
This, absolutely. See: https://mentor.ieee.org/802.11/dcn/14/11-14-0099-0...We are likely to see the 802.11b data rates being disabled by default going forward.
tester.123 - Saturday, June 27, 2015 - link
Do you know who is the partner they are mentioning who provides them with the connectivity IP?