[新手問題] 3G vs HSPA

請問係唔係咁:

3G就係插sim card落一部有wireless wan o既notebook

hspa就插一個USB Modem落一部冇wireless wan O既notebook都得?

thx, 好confused

[ 本帖最後由 mmman 於 2008-12-14 11:28 編輯 ]

3G is the third generation of tele standards and technology for mobile networking, superseding 2.5G. It is based on the International Telecommunication Union (ITU) family of standards under the IMT-2000.[1]

3G networks enable network operators to offer users a wider range of more advanced services while achieving greater network capacity through improved spectral efficiency. Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment. Additional features also include HSPA data transmission capabilities able to deliver speeds up to 14.4 Mbit/s on the downlink and 5.8 Mbit/s on the uplink.

TOP

thanks.

but could you please explain a little bit further about the role of WWan?

thanks in advance

TOP

3G and HSDPA is the same thing refers in your first post.
You can imagine that HSDPA is a sub-class of 3G communication. They both work in the same way.
Your concern is how to connect to 3G (HSDPA).
Both are using SIM card and need a SIM card reader and modem to work.  Some laptop buildin with 3G (HSDPA) slot which means it can support 3G (HSDPA) sim card and go online.  Otherwise, you need to plugin a USB 3G (HSDPA) modem.

Since HSDPA is a newer sub-class of 3G (UTMS "呢個係最早期3G), some old equipment may not support HSDPA.  Even if it supports HSDPA, still has to classify 1.8M, 3.6M, 7.2M, 14.4M speed.

TOP

回覆 4# 的帖子

thanks this is really helpful!

TOP