Tuesday, June 14, 2011

Initial impressions of the Aeon 100 kbps SIM (translated)

UPDATE: fixed a few typos here and there, some of which completely changed the meaning (like the omission of "not" for example).

This blog post has been passed my way via every medium I use, twitter, mail, comments. Yes, I've read it. Thanks for sending :-)
イオン×日本通信 b-mobile AEON 月額980円コースを契約してみた(注意点&第一印象)【追記あり】
I contracted Aeon and b-mobile ¥980/month service (things to be aware of and first impressions) [Updated]
Much of the information is already known to readers of these two articles, so I'll focus mainly on the comments regarding the Aeon 100 kbps SIM. I used "translated" in the title of this post, but that probably isn't the best word, since I'm not a translator. Some of this will likely apply to the other SIMs as well. Regarding proxies, my guess is that the only b-mobile SIM not to use one is the Fair, since it is completely unlimited.
【6/11 深夜追記】IDEOS 用の SIM と同じく、強制 Proxy がかかっているようです。閲覧速度の向上には貢献するようですが、反面グローバル IP を必要とする人はきちんと検討した方が良いでしょう。
(手元で pptp VPN の接続はできましたが、どこまでちゃんと使えるかは未確認です)
【6/12 追記】最後にプライベートIP アドレス利用の状況写真を追記してあります。
【6/11 深夜追記】連続ダウンロード規制(動画含む)はあるようで、速度測定テストを連続で繰り返していたり、動画再生を強引にテストしていたら、接続が一瞬切断されたような形になりました(たぶん)
[late night 6/11 addition] similar to the IDEOS SIM, this SIM seems to use a proxy. While this contributes to improved "read speed" (downlink speed), those who require a global IP address should consider this carefully.

(I connected to a pptp VPN but the degree to which I can use it is unconfirmed.)
[Added 6/12] Added an image showing the use of a private IP address.

[late night 6/11 addition] There seems to be a limit on continuous downloads (video included). Continually performing speed tests or heavy testing of video playing [streaming] and the like seems to have resulted in what might be a momentary disconnection. Maybe/probably.
For the record, I am not aware in what products b-mobile uses proxies. I can confirm that the Fair SIM does not use them. It is paid by the gigabyte and is completely open (same internal and external IP). Also, it is well known that the U300 SIM does not allow streaming. It is also well stated that neither do the Aeon 100 and 400 Mbps SIMs.
感覚的に Willcom PHS データー通信と同じ程度

さて、もうちょっと具体的に言いますと
Twitter の文章だけとか、専用ブラウザでの2ちゃんねるなら
遅いけど、あまりストレスを感じないレベルです。文字情報サイトなら十分実用的と言えるでしょう。
My first impression was that it is similar in speed to Willcom's PHS

More specifically, writing a tweet or viewing 2channel is slow but not overly annoyingly so. It's perfectly fine for text-only sites
This is exactly as the 100 kbps SIM is advertised. Mail, SNS (e.g., twitter), and google search. He goes on to indicate that "stress builds" when trying to load a site normal site with a lot of images.
【6/11 深夜追記】と書いたものの、前述のとおり強制 Proxy がかかって画像はかなり減量される(画質もかなり落ちる)ので、画像が少ないページなら耐えられないほど遅くはないです。b-mobiie側でのキャッシュもあって、よく見られているページを中心に意外とウェブサイトも使えるスピードになることも多い感じです。

例えば、パソコン版ヤフージャパンが 15~18秒で表示されました(キャッシュを切った状態で読み込み終了までの時間)。反面、本ブログのように写真などが多い場合は、パソコン版トップページを読み込むのに 1分45秒くらいかかります。【追記終了】
[late night 6/11 addition] The previously stated proxy cuts down dramatically on the number of images (and decreases their quality), so It is not unbearably slow to browse pages that have few images. And b-mobile seems to be caching regularly viewed pages, so they feel like they load faster than would be otherwise expected.

For example, the PC version of Yahoo!Japan was displayed in about 15-18 seconds (after clearing the cache and waiting for complete loading). On the other hand, loading the top page of my blog with lots of images took about 1 min 45 sec.[End addition]
I have no idea if pages are cached on b-mobile's servers. I also don't know if images on any cached pages are scaled down. Perhaps so. It would make sense. Keep in mind that most pages will serve up a version optimized for mobile devices, depending on browser agent.

He concludes that the ¥980 plan is for people who understand how to use a slow speed connection, and is not for people who want to use a phone or tablet with the usual web services, which again is consistent with Aeon/b-mobile's advertising (and my table here).
また、もうちょっと色々と使ってみると、ベクターデーター化されている Android の Google Map だと
最初の読み込みは忍耐が必要だが、その後の周辺移動・拡大縮小は意外といける感じで、ちょっと驚きました。
After playing around a bit more, loading google vector maps for android requires patience at first but panning and zooming thereafter feel faster than expected, which is a bit surprising.
This is the nature of vector images. Instead of downloading a bunch of pixels that create a circular shape, for example, the formula for a circle (πr^2) is downloaded and scaled as the user zooms in and out. When zooming in, presumably all that would need to be downloaded would be place names, etc. to be overlaid upon the base (vector) map. And these data don't necessarily disappear when you quit maps (from maps, touch more and cache settings: I have 89 MB of data currently cached).

While there is indeed a size advantage to downloading vector graphics, it seems that the maps team at google have made use of the freed-up space by increasing the amount of information in each map, so the total amount of data being downloaded is probably not so different between rasterized and vector versions, but with the vector maps, you take the download hit primarily up front, as opposed to throughout the entire usage session.

One thing to keep in mind is that older hardware, even if it is updated to the latest version of android, may not support vector maps, and instead still download rasterized tiles. The ht-03a on Android 2.2 downloads tiles.
現時点では公称値通り、下り 90~100Kbps 前後
上りは 70~90Kbps 程度出ているので悪くない
So far, have gotten around 90-100 kbps downlink and 70-90 kpbs uplink, which is not so bad
There are a number of images, which show these results, beginning in the Aeon shop, continuing on the way home while outside, and then finally once after returning home. The latency is high and unstable (ping; lower is better), and the highest used the Seul server, while the rest used Tokyo.
【6/12 追記】強制 Proxy 使用でプライベート IP アドレスを使っている状況写真を下記に掲載しておきます(昨日撮影してあったのだけど、載せるのを忘れてました ^^;)
[6/12 addition] Uploaded an image showing a private IP address from the use of a proxy.

2 comments:

  1. I wonder how big is the difference between the AEON 100 kbps and B-Mobile 300kp for Googlemap. I just got WiMAX recently, so I am thinking of going for a low end package to complement my WiMax + Wi2 300 subscription. The thing I need the most when I am out and about is Googlemap, applications on train information, and perhaps application on local venues (e.g. finding restaurants and such). They aren't massive bandwidth drains, but I worry that 250MB per month may not be enough hence I am leaning towards those unlimited plans.

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  2. I have been using the AEON 100k plan for about 6 months now and I I love it.... Google Map, Train Information , Mail etc.. It is rather slow sometimes but the coverage is awesome. Google Maps does take a little to load the surroundings but the GPS etc works great. I attach my old iPhone 3G to my bike and I have my own little GPS Navi. Plus I can check my mail and Facebook... Although Facebook can be really slow when loading the pictures.....

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