a9
发帖数: 21638 | |
z**r
发帖数: 17771 | 2 打个比方，你走路，快走，慢跑，快跑消耗能量肯定不同吧？
【在 a9 的大作中提到】
: 3G比2G多,4G比3G又多那么些？
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a9
发帖数: 21638 | 3 但好像我在大宽马路上跟土路上都慢走，消耗的应该差不多啊。
就像这个G，啥都不用比待机俩人就没法比啊。
【在 z**r 的大作中提到】
: 打个比方，你走路，快走，慢跑，快跑消耗能量肯定不同吧？
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B*****g
发帖数: 34098 | 4 zkss？
【在 z**r 的大作中提到】
: 打个比方，你走路，快走，慢跑，快跑消耗能量肯定不同吧？
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l******t
发帖数: 12659 | 5 这还要展开啊？
【在 B*****g 的大作中提到】
: zkss？
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t*******y
发帖数: 21396 | 6 比方不妥，开车比走路快，但体力消耗少吧
【在 z**r 的大作中提到】
: 打个比方，你走路，快走，慢跑，快跑消耗能量肯定不同吧？
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N*****m
发帖数: 42603 | 7 耗能量跟耗体力是两码事......
【在 t*******y 的大作中提到】
: 比方不妥，开车比走路快，但体力消耗少吧
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z**r
发帖数: 17771 | 8 这是啥阅读理解能力啊？第一俺说的是走路，快走，慢跑和快跑，你跑出一个开车来。
第二俺说能量消耗，按照你的说法，汽车跑的是快，能量消耗更大了呢。
俺觉得吧，跑火车又快又省能量（体力）
【在 t*******y 的大作中提到】
: 比方不妥，开车比走路快，但体力消耗少吧
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z**r
发帖数: 17771 | 9 就是
【在 N*****m 的大作中提到】
: 耗能量跟耗体力是两码事......
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z**r
发帖数: 17771 | 10 都是同样的马路啊，frequency都是一样的，能跑多快是你自己本事。
【在 a9 的大作中提到】
: 但好像我在大宽马路上跟土路上都慢走，消耗的应该差不多啊。
: 就像这个G，啥都不用比待机俩人就没法比啊。
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h*d
发帖数: 19309 | 11 http://www.quora.com/Why-do-4G-phones-consume-more-battery
Rupert Baines, VP marketing at Picochip. Pioneered f...
1 vote by Mark Prince
Three factors:
How many radios are active at once? Each radio draws power.
Extra circuitry, and often an extra chip. More treansitors, more MIPS =
more power; more chips = more power
Higher data rates on 4G require more power (wider bandwidth, high order
modulation, MIMO)
A phone can have one, two or three of these reasons to draw more power, and
have shorter battery life.
To expand:
First, it helps to distinguish which ''4G''
T-Mobile is HSPA+. This is really 3G (HSPA+, 5MHz channel, same chipset).
You could say it has best battery life of any 4G device, but that is hard
core marketing spin!)
Clear / Sprint 4G - which is your EVO. This will have the worst power
consumption. As Philip Solis and Mike Chan have said there are two separate
chipsets, and both are operating somewhat independently, drawing current. ie
the 4G chip is not the same as the 3G one.
Verizon LTE and (soon) AT&T LTE. This will draw more power as it has faster
data, an additional radio. Early versions will have dedicated chip (as Mike
says) so will be comparable to the Evo, but will be somewhat better as
integration between 3G and 4G is smarter.
Within a few months the next generation of handsets will be far better,
using integrated 3G+4G chips as they are available. These draw less power (
fewer devices, higher integration is a good thing) and will have far better
integration of the services.
There are fewer 4G cellsites than 3G ones, so on average your phone will
have to 'shout louder' to get a connection to a further cell: that also
hurts battery life. This is a reason people are proposing many, many more 4G
small cells and femto cells for 4G
All of which said, 4G inevitably draws more power than 3G (and Why does 3G
mobile cellular signal use more power than 2G?) so unless you are using the
data service you could switch it off |
t*******y
发帖数: 21396 | 12 走路，快走，快跑，应该是指同一个G里面高速低速传输啊，2G和4G比，就相当于汽车
和走路比吧。
而且算上车的自重，运送单位质量汽车的能耗未必大吧，你让人拖着车走试试。
【在 z**r 的大作中提到】
: 这是啥阅读理解能力啊？第一俺说的是走路，快走，慢跑和快跑，你跑出一个开车来。
: 第二俺说能量消耗，按照你的说法，汽车跑的是快，能量消耗更大了呢。
: 俺觉得吧，跑火车又快又省能量（体力）
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N*****m
发帖数: 42603 | 13 算单位载重能耗的话，应该跟单位字节能耗类比，估计差不多，呵呵
你这个杠抬得不咋地
【在 t*******y 的大作中提到】
: 走路，快走，快跑，应该是指同一个G里面高速低速传输啊，2G和4G比，就相当于汽车
: 和走路比吧。
: 而且算上车的自重，运送单位质量汽车的能耗未必大吧，你让人拖着车走试试。
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m*****d
发帖数: 13718 | 14 应该象cpu一样自动变频降低能耗
【在 a9 的大作中提到】
: 3G比2G多,4G比3G又多那么些？
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j**u
发帖数: 6059 | 15 well said
【在 z**r 的大作中提到】
: 打个比方，你走路，快走，慢跑，快跑消耗能量肯定不同吧？
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