| System/Items |
XGP |
Other BWA System |
Mobile System |
| Cell Structure |
Micro Cell+ Macro Cell
Mainly adopting micro cells in places with heavy traffic. Overlapped coverage of multiple cells is allowed. |
Restricted to Macro Cell
One base station covers comparatively broad area. To avoid interference between each other, overlapped coverage of multiple cells is not allowed. |
Restricted to Macro Cell
One base station covers comparatively broad area. To avoid interference between each other, overlapped coverage of multiple cells is not allowed. |
| Date Communication Speed |
Per user date communication speed can be maintained stable in high traffic due to switch of base stations that can diversify the traffic. |
Per user data communication speed tends to fall when traffic is busy, as multiple users are concentrated on one base station. |
Per user data communication speed tends to fall when traffic is busy, as multiple users are concentrated on one base station. |
| Network Structure |
Investment on network facility can be kept low by making use of the existing IP network. |
Investment on network facility can be kept low by making use of existing IP network. |
Investment cost on network is enormous as network structure being independent. |
| Utilizing Form |
Terminal to indoor/outdoor base station (Public Mode)
Terminal to indoor/outdoor base station (Private Mode)* |
Terminal to base station outdoor |
Terminal to base station outdoor |
| Channel Allotment Method |
No restriction on location of base station due to dynamic channel allotment, which makes amplification of base stations easy. |
Delicate design is needed to install a base station due to fixed channel allotment. Amplification is difficult because adjustment with the existing cell stations is needed on adding a new cell station. |
Delicate design is needed to install a base station due to fixed channel allotment. Amplification is difficult because adjustment with the existing cell stations is needed on adding a new cell station. |
| Trend (Nov. 2007) |
Standardization process completed in September 2007.
WILLCOM Inc. has started studies jointly with AWC in Thailand to apply XGP system. |
WiMAX is adopted in ITU advice as one of the IMT-2000 methods
Standardization of UMB is not completed. |
Research and development concerning Super 3G、4G is undergoing, although the main stream is GSM of the 2nd generation. |
*Standardization Process Unexcuted.
¤ Source: Textbook series Wireless Broadband Textbook, 3.5G/Next Generation Mobile Volume by Impress Japan Corp.
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