Strategy of AXGP in the interview
"Aim to realize large capacity mobility in urban areas"
Mr. Yoshioki Chika (VP of XGP Forum) appeared "Strategy of AXGP". -- In the interview with Business Network. (May 28, 2012)
Quotation： http://businessnetwork.jp/
AXGP developed by WCP is a kind of system that not only enjoys the a number of benefits of TD-LTE, but also realizes the large capacity with microcell technology of PHS. Mr. Chika, the CTO of WCP, said that AXGP will prove its real worth in combination with 3G/LTE covering a wide area.
――Softbank's high-speed data communication service using the network of AXGP (Advanced eXtended Global Platform) built by WCP(Wireless City Planning) has already been launched on February 24. How is the feedback?
Mr. Chika: We are so glad that it started out without causing our customers any inconvenience. It seems that the users are steadily increasing.
――You had been working on XGP at WILLCOM, which is also called 「next generation PHS」. Now you are working as the CTO of WCP which has took over XGP and pushing ahead AXGP. As I know AXGP is a system that is 100% compatible with TD-LTE which is being commercialized in China. What is the relationship between XGP and AXGP?
Mr. Chika: Since ten years before, we have forecasted that the capacity of network will not be sufficient by far in the mobile broadband era. Therefore we assumed that microcell network of PHS will be the optimal network for broadband and set out to develop the XGP which can utilize it very properly. However, due to changes in market environment it has become clear that the communication system cannot be maintained unless ecosystem is big enough. Thus we decided to match global ecosystem, and also keep the design concept and algorithms of XGP in the meanwhile. Accordingly, In order to strengthen the compatibility with TD-LTE, we modified the specification and that is AXGP.
＜Skip＞
――What is the difference between AXGP and 100% compatible TD-LTE? If terminals can be shared, what are the differences between AXGP and TD-LTE?
Mr. Chika: The major difference is that high density base stationing of PHS can also apply to AXGP and it makes it possible to achieve large capacity. Microcell is an effective means for expanding network capacity, yet there is one problem. That is if the cell stations are arranged too close, interference will occurs. To avoid this kind problem, a special algorithm and know-how of arranging base stations are being incorporated.
――Could you explain the technology specifically?
近Technical elements are not significantly different from those used in heterogeneous networks, which has become the worldwide sensation recently. The most different point is the accumulation of know-how. We have been deploying PHS for 20 years and we know exactly how to expand capacity; we know what is necessary to avoid problems in advance. Another big difference is that WCP is able to realize high capacity network with microcell promptly by using 150,000 PHS base stations. Of course we have also altered our attitude to technology development.
＜Skip＞
Quotation： http://businessnetwork.jp/Default.aspx?TabId=65&artid=2156