2009年1月28日 星期三

手機配上 IP

WIMAX/ LTE 兩個通訊協定為 4G 的主要競爭對手,目前還未看到誰輸誰贏。

According to Beyond 3G (Martin Sauter) 一書提到

LTE 的手機是配置 IP 的,我想 IPv6 一定會越來越快進到通訊領域來...

其中 LTE (3GPP’s Long Term Evolution), 而 3GPP 為Third Generation Partnership Project 的縮寫

A big difference of LTE from GSM and UMTS (2G/ 3G) is that mobile devices will always be assigned an IP address as soon as they register to the network.

This has not been the case with GSM and UMTS because 2G, 3G and 3.5G devices are still mostly used for voice telephony and so it makes sense to attach to the network without requesting an IP address.

In LTE networks, however, a device without an IP address is completely useless. Hence, the LTE network attach procedure already includes the assignment of an IP address. From the LAN/WLAN point of view this is nothing new. From a cellular industry point of view, however, this is revolutionary.

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