最初由 hxp417 发布
感觉以下两个问题将非常阻碍3G发展 (请各位大侠指教)
1. 无线电频率资源是有限的(非常有限的)宝贵资源,所以注定3G将会比较昂贵。(这条是中国邮电某专家说的)
In theory, 3G does't require more RF bandwidth than 1G or 2G. It just uses the BW more efficienetly by upgrading the current mobile system to 3G compatible. Just like in the GSM network, 1.8G network can handler 4 times amount of users in a same area, compare to 800Mhz network.
It will be expensive at beginning, because Telco's need to buy lots of equipment to upgrade the network to 3G, but price will drop later. Telecom service price is based on statistical customer usage, so, more customer will keep the price down, but do not riase the cost of telcom.
2. 便携式、手持无线通信设备的大小有限,用来进行 Web Access,意思不大。 (本人感觉)