Clearly the current service of "UQ WiMAX" is faster than eMobile's 42 Mbps service

High-speed communication service "UQ WiMAX" with downlink maximum of 40 Mbps and uplink maximum of 10 MbpsUQ Communications, which develops around the world, is planning to introduce it around 2012Next generation communication service "WiMAX 2" with downlink maximum of 330 MbpsWe gave a presentation about.

At the briefing session, commentary on the current state of the UQ WiMAX and future prospects was made, but the current "downlink maximum 40 Mbps" service that the company provides isA service of "downlinking maximum 42 Mbps" which EMOBILE is scheduled to start in OctoberIn addition to clarifying that it is faster than that, I mentioned that the area development is proceeding smoothly and that we are not going to limit the bandwidth for the moment for the time being.

In terms of numbers, e-mobile seems to be more advantageous, but what kind of dialogue do you have? Details are as below.
"UQ Communication Salon" which was carried out for the media concerned the other day. It is an event aimed at lectures on technology rather than new product launch.


In the first part, Mr. Akio Nosaka, President and Representative Director of UQ Communications, made a presentation.


Current UQ WiMAX subscriber status. It is expected to reach 330,000 users by the end of September 2010.


Percentage of WiMAX equipment used by subscribers. Mobile WiMAX router "WiMAX Speed ​​Wi-Fi" and WiMAX personal computers are well sold and are expected to become mainstream in the future.


The number of base stations increased steadily. It is expected to reach 11,000 stations at the end of September 2010, and we are aiming to open 15,000 stations by March 2011.


The speed of "WiMAX Speed ​​Wi-Fi" will be of great use to use wireless LAN products such as iPad and iPod touch.


Variation of 'WiMAX Speed ​​Wi-Fi' will be increased for the winter shopping season.


For WiMAX built-in personal computers, "WiMAX PC Value Set" will be offered that will allow registration fee to be free on WiMAX service for up to 2 months from October 1 (upon "UQ Flat" subscription).


The minimum fee for the 2-step rate plan "UQ Step" will be 0 yen for 12 months and the maximum amount to 4600 yen.


It has been deployed since September 1"WORLD WiMAX" will be free to communicate in the US until March 2011something like.



It also refers to the maximum downlink of 42 Mbps using the "DC-HSDPA" method announcing that EMOBILE will start in October. It seems to be faster than the current service of UQ WiMAX (downlink maximum 40 Mbps) ... ...?


Actually, the precondition of speed comparison is different in the first place. UQ WiMAX is the communication speed after error correction, the communication speed written by mobile phone companies including EMOBILE Corp. seems to be the speed with no error correction applied.


If you compare both with "no error correction", the communication speed of UQ WiMAX is 48 Mbps, which means that it is faster than e-mobile service. By the way, it is said that no error occurs in mobile data communication, and UQ WiMAX is more advantageous in terms of effective speed taking error correction into consideration.


Then pick up examples of bandwidth limit. UQ WiMAX will not implement bandwidth limitation for the time being, although although each company has introduced bandwidth limitation for users who have communicated over 3 million packets (about 366 MB) or more.


And the demonstration of "WiMAX 2" demonstrating the downlink maximum of 330 Mbps with the latest standard "IEEE 802.16 m" in the environment of 350 km / h or more is notified worldwide for the first time in the UQ Communications booth of "CEATEC JAPAN 2010" .



In Part 2, Toshikazu Sekai, manager of UQ Communications Network Technologies, explained "WiMAX 2" and others.


"WiMAX 2" adopting "IEEE802.16m" enables high-speed, large-capacity communication equivalent to optical lines, further shortening of transmission delay, communication at 350 km / h, compatibility with current UQ WiMAX, network capacity It seems that we can improve such as.


The company's "high-speed large-capacity communication" means that even if access from a user is flooded with one base station, performance deterioration is small. It is considered to be a very important technology in urban areas.


As the high-speed and large-capacity communication progresses further, it becomes possible to wirelessly use every content and net service.




"WiMAX 2" has compatibility with conventional standards, so it is a big point that the current WiMAX can be used even in areas where "WiMAX 2" can not be used right after service start.


WiMAX is about 2 years ahead of 3.7 generation mobile phone service "LTE" of downward 37.5 Mbps, where NTT docomo starts service this December. The introduction of the next-generation standard is also the one of WiMAX first.


We also refer to the comparison with the maximum 42 Mbps downlink adopting eMobile's "DC-HSDPA" picked up in the presentation of Part 1.


WiMAX adopts "MIMO technology" which does not support DC-HSDPA, improves performance by multiplexing transmission.


And "OFDMA"By supporting the wireless communication method called" transmission efficiency "is also being improved.


Compared with DCMA HSDPA supported wireless communication system "CDMA" it seems to dominate overwhelmingly.


Error correction is also essential for wireless communication.


While the data communication speed of WiMAX is calculated only by the transmission speed of the data signal excluding the error correction code, DC-HSDPA is calculated by using data communication with an error correction code rate that is unrealistic in actual environment such as LTE Because the speed is being calculated, the conclusion that the effective speed is higher in UQ WiMAX.


When calculating the communication speed with the same error correction code rate as UQ WiMAX, DC-HSDPA is maximum downlink 35 Mbps and LTE is maximum downlink 31.3 Mbps (62.5 Mbps in some areas).


About band limitation which is most concerned to the user at the end. A state where heavy users occupy network capacity is expected to visit UQ WiMAX before long.


Contents of regulations being carried out in communication service. It is very troublesome that you can not use a specific application or block access to specific contents ....


The problem with this problem is depletion of wireless resources, etc. WiMAX has high frequency usage efficiency and large wireless capacity, which is an advantage for other companies.


Where UQ WiMAX aims. Pursuing thoroughly high speed, promoting capacity expansion of the system. We are going to see band limiting for the moment and we will make our voice more user-friendly and evolve into a more attractive service.