4G网络果然还是需要推荐Optus/Virgin

cloud226

Telstra和Optus的网络都用了用

optus的范围更大 速度也快很多

图是在Macquarie测得 但是在悉尼City 平均也有20Mb

lingyang

optus目前用的人还不多，等以后人多了速度自然就慢了，

我还是推荐T记的，稳定，到哪儿速度都是杠杠的

C.D.

lingyang 发表于 2013-1-2 10:50
optus目前用的人还不多，等以后人多了速度自然就慢了，

我还是推荐T记的，稳定，到哪儿速度都是杠杠的 ...

LTE will be different

workflow

T的LTE很爽啊

lingyang

C.D. 发表于 2013-1-2 10:51
LTE will be different

难道optus用的是HSPA+？

C.D.

lingyang 发表于 2013-1-2 10:58
难道optus用的是HSPA+？

http://www.techworld.com.au/arti ... spa_lte_australia_/

我也以为只有Telstra supports HSPA+。。

cloud226

T现阶段4G没有O好

T的范围太小了 稳定和速度其实也不如O

墨尔本的水獭

C.D. 发表于 2013-1-2 11:07
http://www.techworld.com.au/article/441524/how_fast_hspa_lte_australia_/

我也以为只有Telstra supp ...

不一样的，optus的是20M的hspa+，telstra的是40M的HSPA+ Dual Channel （就是图中的DC-hsdpa吧）

就是说，optus的3G速度最高不超过20M，单telstra的3G就可以超过20M，我实际到过28M

有的标准把optus的那种20M的不算作hspa+,40M的才算，所以Iph 4s的规格表上都没写支持hspa+（实际它支持20M的，只是不支持40M的），ipad3因为支持40M的3G网络所以写了支持hspa+
在国内联通推出20M的3g网时使用的是hspa+的名称，4s用户产生了混淆

行业标准真混乱。。。。。

tramplady

C.D. 发表于 2013-1-2 11:51
LTE will be different

and just how?

鱼羊鲜

好乱 又要几年

C.D.

tramplady 发表于 2013-1-2 11:22
and just how?

看上面的同学的回复， LTE应该在100M以上

tramplady

C.D. 发表于 2013-1-2 14:36
看上面的同学的回复， LTE应该在100M以上

So? From memory the carrier cap it at 40M anyway, and to go higher you need more antennas inside mobile device which isn't gonna due to battery drain. Besides you are side-stepping my question.

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lingyang 发表于 2013-1-2 10:50
optus目前用的人还不多，等以后人多了速度自然就慢了，

我还是推荐T记的，稳定，到哪儿速度都是杠杠的 ...
LTE will be different

How did you come to the conclusion LTE wouldn't have congestion problem, contrary to industry experts?

cloud226

tramplady 发表于 2013-1-2 15:01
So? From memory the carrier cap it at 40M anyway, and to go higher you need more antennas inside m ...

I believe C.D is only trying to state that no one can guarantee Telstra'll perform better than Optus on LTE, given the current status.

lingyang

tramplady 发表于 2013-1-2 14:01
So? From memory the carrier cap it at 40M anyway, and to go higher you need more antennas inside m ...

Not quite sure if this stays true with LTE by saying "and to go higher you need more antennas inside mobile device which isn't gonna due to battery drain". As far as I know LTE network architecture is much flatter and simpler than HSPA+, HSPA+ uses the same WCDMA architecture so your statement is true under HSAP+ network.

Even SPs rate limited all 4G to 40m, but less overhead in LTE network means short packets processing time. From an end user perspective LTE "accomplishes tasks" much faster than HSAP+, hence less "working" time for a mobile device than under HSPA+ network, ---- saving battery :-). another word, LTE uses more power but it offset by less time spent on downloading..... the end user experience is greatly enhanced, also less congestion.

my knowledge is very limited, would like to know more about the LTE congestion if you can share with us.

tramplady

cloud226 发表于 2013-1-2 15:54
I believe C.D is only trying to state that no one can guarantee Telstra'll perform better than Opt ...

It is pretty much a guarantee. Optus can't compete with telstra's resources like base stations etc nor it is willing to, as long as it is control by singtel. You have to also consider the "monopoly" status that Telstra have.

cloud226

tramplady 发表于 2013-1-2 17:26
It is pretty much a guarantee. Optus can't compete with telstra's resources like base stations etc ...

Then why does Telstra have very limited, and remarkably smaller LTE coverage than Optus?

I couldn't care less whether Telstra has 200 more base stations in the desert, I only care which provides better speed and coverage in the metro area where majority people actually lives. And so far, surprise, surprise, Optus wins. So I say Telstra's crown isn't guaranteed when referring to LTE.

tramplady

lingyang 发表于 2013-1-2 16:51
Not quite sure if this stays true with LTE by saying "and to go higher you need more antennas insi ...

Agree with you, just add a few things. You know LTE is MIMO like wireless N/AC standard, to get increase speed vendor basically just throw in more antennas setup, current LTE phones maybe only have a 1×1 setup with god knows how much bandwidth support, not to mention if carrier limit how much bandwidth you have access to. FYI, top LTE speed of 300m require 4×4 setup and 20mhz bandwidth, you will probably only see that in a 4g modem, tablet should get at least 2×2 setup.

Anyway, LTE will run into congestion like 3G because it is still a wireless tech that have access to very limited spectrum. While LTE can 'kick' off users quicker, there is only so many users a tower can handle, current 3g speed is actually good enough for most needs. It is when during peak time that everyone try to do quick FB, twitter that the network get melt down. The actual load isn't that high, but it is the concurrent requests that the tower can't handle. Prime example is Melbourne's 3g network, it is been unusable for over a yr, started when Telstra priced aggressively for more users.

The current 4g network will experience slow down in 1-2 years time when iOS users all move to LTE version, congestion probably kick in at 2-3 years time when other LTE devices get traction. However there is an escape, by that time the 700mhz network should be up and running, so as long as you stay top of the curve you can avoid the congestion.

tramplady

cloud226 发表于 2013-1-2 17:36
Then why does Telstra have very limited, and remarkably smaller LTE coverage than Optus?

I couldn ...

The 1800mhz network is only a stop gap till the real network arrive in less than 2 years time, Telstra have to be careful not invest too much in it. For base stations I am not referring to coverage, more as in same area, Telstra have higher numbers to cover users, hence more towers/fibres to spread the load.

Besides Telstra's network has been running for over a year there are tons of users on it, optus one is less than 3 months old? We will see how much it deteriorate over the coming months. I can give you a hint though, optus's current plan and prepaid users can't access the 4g network, you have to move to more expensive plans to get 4g, unlike Telstra, that's how much confidence optus have in its own network. I do agree optus currently have much better LTE coverage than Telstra, although it can be somewhere muted by telstra's 5-10m network speed when outside inner inner city, that speed is good enough for most needs, except when you tether to laptop.

mazhesg

o家macuqarie park是headoffice，是信号最好的地方，其次是CBD好。最主要是o家用的人比T家少多了

cloud226

mazhesg 发表于 2013-1-2 18:38
o家macuqarie park是headoffice，是信号最好的地方，其次是CBD好。最主要是o家用的人比T家少多了 ...

3个Bar怎么样也不可能算信号最好吧 ;)

righttang

T 的LTE，在上班高峰时间，能达到10M就不错了。。。。
只有夜深人静的时候才能到20M

ysihaoy

楼主这就是炫耀贴啊，哈哈

holyplague

righttang 发表于 2013-1-3 09:47
T 的LTE，在上班高峰时间，能达到10M就不错了。。。。
只有夜深人静的时候才能到20M ...

夜深时候应该接近40M了， 高峰期么。。。看我NYE的图。。。

lingyang

我的4G速度还算稳定

righttang

T 的4G

shayy

谁家的网络快，就某一具体地点来讲，真的很难说
LTE与以前的standard比，在速率变化上要灵活的多，直接与接收机的和基站之间的信道相关，如果接收机距离某家的基站很近，速度快是当然的，这点和WiFi有点像，如果同一个房间内，信道好，可以传54Mbps，否则6Mbps。因此很难有一家网络在所有的地点都是最优
要是你用modem，挑你家信号最好的就好，要是手机，还是要考虑平均下来的效果

澳洲行

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