[WIRELESS JAPAN 2009] Mr. UQ Yao Hai, talking about the overview of WiMAX and the next generation WiMAX

　At the technology department meeting "3.9G/LTE&4G Network Infrastructure Construction Forum" of "WIRELESS JAPAN 2009", a comprehensive activity related to wireless communications, Haimin Yao, Minister of Network Technology of UQ Communications, delivered a speech entitled "Broadband services created by UQ WiMAX and technologies to support them".

　First of all, I would like to introduce the technical background of WiMAX as a feature of UQ WiMAX. The WiMAX used by UQ WiMAX will become an international standard wireless communication technology standardized in WiMAX Forum. WiMAX Forum not only creates the system configuration file, but also provides the authentication program for the interconnection of devices, and the products of the certification program will be given the label of WiMAX Certified. A certification process called the R1Wave2/Phase1 version is under way, and certified devices can also be confirmed on the Web site.

　In addition, as a feature of WiMAX, Heidegger enumerates the high-capacity communication of up to 40 Mbps and the high-speed mobile of 120 km per hour. As its background, this paper introduces the modulation mode of using OFDMA and 64QAM, MIMO, frequency diversity, Proxy Mobile-IP and so on.

　In UQ WiMAX, the implementation of Proxy Mobile-IP, even when moving in communication, the base station connecting to the destination changes the handover, but also maintains the same IP address, no matter anywhere in Japan, the IP address will not change in the connection.

　Moreover, constant connectivity is also a feature of WiMAX. Power saving is achieved through sleep mode and idle mode, and there is no need for dialing. "as long as the user does not consciously cut off the network, the IP session will be maintained and the push service can be used," Yao explained. "

　On the basis of such WiMAX technology, as a service provided by UQ WiMAX, Yaohai first introduces the quota unlimited use scheme in the current service. Yao Hai explained: "I will get the initial registration fee, but there is no time limit, so I can join and terminate the contract at any time."

　In addition, it also introduces the 24-hour 600 yen unlimited use plan (starting from October 1), the 15-day limited trial service "Try WiMAX", the optional service of 200 yen per month for an additional WiMAX device, transportation and other Wi-Fi connection services that can be used.

　As a UQ WiMAX compatible terminal, Yohai introduces two USB and PC card types, four Express card types, plus five wireless LAN gateway types, "which are provided as operator brands. However, in the future, rather than providing terminals on its own, UQ will focus on suppliers selling what they have developed as the center of WiMAX. In addition, it is now a data communication terminal and gateway type, but I think it is a WiMAX built-in laptop. "

　Looking ahead, he said: "several laptops will be equipped with WiMAX, and in the future, they will also be installed on MID and UMPC, as well as televisions and home appliances that will not be personal computers and information terminals in the future."

　On how users sign up, he said: "now the mobile phone is a window procedure, but in UQ, through air (wireless) activation (authentication), provide Over The Air (OTA)." The terminal can be purchased in the so-called white rom state without a contract, initially connected to UQ's network and forced to route to WiMAX's portal. Users can select the signed ISP and sign online there, and explain how to sign the contract. In addition, in the future, not only the user's hand contract, but also the same sales store as before can contract to prepare the system.

　UQ says that for terminals, it will help vendors develop on their own, rather than being controlled and developed by UQ. To explain the provision of a "UQ Certified plan" for this purpose. This program, when the supplier develops the terminal, UQ's network stable connection is confirmed and authenticated. To Hai introduction, "after the examination and examination pass, can be affixed with the UQ Certified sticker, as long as the sticker can be stably connected to the UQ network, become the added value of the product."

　In addition, with regard to the base station, even the standard miniature BS (base station) has the size of a cluster slot, and even if it includes an antenna, it weighs about 1 person per adult. Also introduced in order to deal with outdoor attractions and indoor, but also the introduction of ultra-small BS.

　With regard to the establishment of the network, he revealed that services began to be provided in July and 1500 radio stations had been set up in Tokyo. In addition, to sea also said: "the distance between base station construction is increasing every day." More than 450 were set up in July alone, but they are also accelerating. In 2012, we announced that the population coverage rate was more than 90%, but in fact our goal is to reach more than 90% at an earlier stage.

　In addition, on the business model, to Hai said: "this is an open network, with MVNO as the center." After three briefings for MVNO, several MVNO contracts have been signed. I want to use this as the standard of global WiMAX business, "to promote the openness of business."

　In addition, the introduction of the more advanced specification of IEEE802.16e, IEEE802.16m, is also under development. In IEEE802.16m, the maximum communication speed of 160Mbps in 2 × 2 MIMO and 330Mbps in 4 × 4 MIMO is targeted, and the same speed of 350km per hour as Shinkansen is also targeted for high-speed mobile.

　At the end of the speech, Hai said: "the next version of Mobile WiMAX will be aimed at LTE in specifications." UQ's WiMAX starts with IEEE802.16e, but at this stage after its inception, the next service is also brought into view. First of all, I hope that the expansion of the service area can contribute to the comfortable life of users, and I also hope that you will look forward to the new world of the next WiMAX. "