Beijing to join the "wireless City Club"

Yesterday, "Beijing wireless city" of the first wave of renown.

CLP huatong laying of wireless broadband network using WiMAX WiFi + (802.16d), outdoor in's Zhongguancun, notebook Wi-Fi can detect "CECT-CHINACOMM" wireless network, and is a high speed connection, but once inside the network, this network to be indoors is out of the question.

Hey, through wall without surgery, it is estimated that the cost of indoor coverage is too high.

Speaking of money, the Government is during the Olympic Games as a network-embedded single, but after the closing ceremony, and then want to have to forego took Silver.

Four standard for your choice: $ 20 unlimited Internet access card for 1 day, 60 day unlimited access card, 80 unlimited monthly card and on-time $ 0.12 per minute.

The ambition of CLP huatong, Beijing wireless city's goals into three major battles.

The first step, already yesterday we met. The second step is next year, an additional 9 000 Wi-Fi access points, as well as 150 WiMAX base stations, sufficient to cover 90% of the city's main streets. The third step is the end of 2010, the city covered, let Beijing Fangyuan 625 square kilometres of land boundaries have high-speed Internet access.

I. technical flow

Non-tech flow friends ask, "Why use Wi-Fi collocation of WiMAX network? because Wi-Fi i.e. IEEE802.11b/g technology, voice over wireless LAN (WLAN), as its name suggests, is its network coverage is relatively small, often only for a building, an Office of the Chief network tasks; while WiMAX is 802.16d/e technology, called Wireless metropolitan area networks (WMAN) technology.

Its network coverage can be the whole city. We note that the selection of Beijing is WiMAX 802.16d version, it is only suitable for Internet access device at a fixed place for high-speed Internet access, commonly known as "fixed network Edition". In addition, there is a version of WiMAX 802.16e, allowing Internet access device at a speed of 120 km of State for high-speed Internet access, is also a version of the "mobile network".

Combination of wireless network in the dazzling brilliance, limelight even sounded over TD-SCDMA.

In particular, fully compatible Wi-Fi WiMAX has been accepted in the last year, the ITU (International Telecommunication Union) become coronation, WCDMA, CDMA2000 and TD-SCDMA after the fourth global 3G standards. So, why TD's Beijing? first WiMAX, WiMAX network coverage is 3G Tower 10 times as long as a few base station construction to achieve coverage of Beijing city. Secondly, WiMAX can provide maximum access speed is the speed of 70M 3G can deliver broadband speeds of 30 times. Third, it can be a Wi-Fi hotspot to connect to the Internet, can also be used as DSL, cable access mode of the wireless extensions for last mile broadband access. WiMAX can be 50 km linear region to provide services, the user does not need cable to the base station to establish a broadband connection. Finally, to WiMAX than Wi-Fi has better scalability and security, enabling carrier-class multimedia communication services. Therefore, Beijing's Olympic venues construction on the adoption of a WiMAX network.

Therefore, wireless city by TD-SCDMA, Wi-Fi and WiMAX build out together.

Moreover, with the currently widely used wireless networks, WiMAX technology has its own unique advantages. WiFi technology can provide up to 54Mbps Wireless access speed, but it's the transmission distance is very limited and restricted radius of about 100 meters of the range. TD-SCDMA can provide a very wide transmission range, but it's access speed is very slow. WiMAX has just made up for these shortcomings. Therefore the future combined with WiFi (wireless LAN), WiMax (Wireless metropolitan area network), 3G (wireless wide area network) from a mobile terminal will provide us information where high speed and convenient broadband network.

Second, the model city

Finally, the brand of high-tech Olympics, Beijing has also become the wireless City Club.

Since July 2004, the United States Philadelphia first proposed the concept of a "wireless city", wireless city has been a large number of countries and regions as an important direction of development. But ambitious Singapore is the goal of the wireless city extended to wireless, plans to build a 2015 a nationwide wireless broadband network. According to a survey of research institutions In-Stat report display, at present, the world already have wireless city 600 seat, expected in 2010 will increase to 1500. While in Beijing, Shanghai, Tianjin, Wuhan, Hangzhou, Shenzhen this six cities will become China's wireless city model.

Abroad, wireless city is known as the Government of the fifth public utilities.

A standard wireless city should have six features, we can control the benchmark looked at Beijing couplers. First of all, is a wireless public access, Beijing xdjm finally anywhere online, that is not supported by the network and interface bondage feeling, very interesting. Secondly, a wireless video service will fulfill Beijing Olympics live on the phone, not many people criticized TD's colors well, it looks at the performance of WiMAX! third, wireless location services and let the car family used-vehicle device networking login, you can auto-sensing auto entering traffic-intensive areas. This is particularly important to ease the traffic in Beijing. At the same time, the electronic version of the ' helicopters will also be in a wireless network is a great extension, perhaps Mall Big Horn search will become history. Fourth, wireless payments, Beijing every spring, is fastigium, queues,Don't want to mess with cattle, and can help mobile ticketing, this is definitely a received immediate convenience. Fifth, the wireless network hard drive: a high-speed wireless network, Alice and journalists to DC and DV size and picture transfer to worry about. Just finished shooting the first time through the wireless network to upload to the network hard disk, absolute convenience. Finally, wireless city building also provides government departments and medical units provides a social emergencies make efficient cooperative processing platform, for example, in the event of a major fire, gas leaks, and other key security incidents on the one hand to send fire and technical personnel on site, on the other hand is rushed to go to can be installed on the mobile automotive camera systems to on-site conditions back to the city centre so that emergency personnel to visually judge and correct instructions issued salvage, minimize losses in critically ill patients admitted to hospital on the way, you can take or vehicle-mounted camera and various sensors, promptly injury situation and physiological data real-time back to hospital for emergency treatment of injuries and win valuable time.

III. search city diary

Beijing, as wireless city strategy first eat crabs, nature, enjoy the unique government resources and policies, but the real about the future direction of the Government or the need for effective operational mode, which is currently in the following examples demonstrate.

Singapore

First, let's look at the promise of the "wisdom" of 2015 Singapore.

Beijing by CLP huatong a arrogation, Wireless @ SG project is determined by the Singapore Government and three operators together is complete, the wireless network has been put into use, as of May 2007, the wireless broadband users has reached 42.8 million. According to the contract, the three operators will provide the user with 2-3 years free wireless broadband access. In other words, to December 31 2009 recently, Singapore residents and tourists will enjoy wireless broadband services. As compensation, the Singapore Government to allow operators to the wireless network of value-added service fees.

Singapore's trading pattern, both to avoid competing with the Government, and to achieve cooperation between.

In particular, Government support and financing of the wireless Internet access and data use for reference. Singapore Government training and education users use different electronic tools, anytime, anywhere using the Internet to get information, such as the user can use the mobile Internet reached different frequency bus bus stop time. However, in popular terms, Singapore mobile phone users online population is not satisfactory. Thus, consumption habits is not a quick fix of the call will be able to cash out. After the Olympic Games, the CLP huatong charges path can work so far, I still doubt that the use of Mobile GPRS Internet users do not have a certain scale, the Olympic Games after charging mode are some Todos.

Taipei

July, Taiwan usher's first Charter tours.

If you are interested, you can mix compare Taipei and Beijing's wireless network environment, some very interesting. Since as early as in 2004, the city would begin to establish a wireless cities, then Mayor of Ma Ying-jeou, also had a rallying cry for the establishment of a digital city shouted! as a result, the wireless city network called WiFLY. In June 2006, has been basically completed the WiFLY full coverage in the outdoor public areas in Taipei, the population coverage to reach WiFLY above 90%; and in indoor public areas, Starbucks, 7-11 store, Taipei apaap staining egg shopping street, skating rink, performance Hall, the city library and 50 Branch Library, municipal joint hospital and nine branch, 12 regional administrative centre, as well as 71 MRT station and are already under the street around the wireless network coverage.

Although, like Taipei, Beijing is densely populated cities and Taipei's road is clearly better than Beijing narrow too much, but no Beijing Taipei like traffic jam is a wireless application to Taipei City traffic and security service great help.

In various important road in Taipei are vehicles the supervisor for real-time monitoring and analysis of traffic flow information, and then through the GPRS or the data to be passed to WirelessLAN handed control center. In addition, in Taiwan each intersection, car parks and community, is placed a networked camera, not only can you monitor the vehicle regulations, its high-quality screen also become police find stolen vehicle, arrest suspects of strong evidence.

Korea

2 years ago, Korea is launched WiMAX services, Seoul has entered the global advanced wireless city.

Seoul's WiMAX service mainly based on WiBro — Korea local system has become 802.16e, i.e., as described in the "mobile version". (Beijing using 802.16d, fixed Edition). The mobile WiMAX contains three frequency bands, as well as multiple signal bandwidth. And it is these WiBro cover bands and a subset of the bandwidth. However, there is also limited to 2.3GHz ~ 2.4GHz frequency bands and channel bandwidth for 8.75MHz.

At Seoul's subway do testing, from 30% (Samseong) station to the Town Hall of line 2, the itinerary includes two underground and above ground.

2 connect the city to the South of the high-tech district, TeheranValley across the Han River, the last ending at Seoul's commercial centre. In 30 minutes of phone never lost signal, even though the train out of the station, the network often decline, and in the train arrives at the next station is increased again. But the overall speed of the wave, and Web and email access effect is also very good, login Yahoo! watch streaming video news encoding rate is marching in train 300Kbps process is also not affected. In the FTP site to download a length 40MB video files, when the train is pulled into the 320Kbps, soared to 660Kbps。 In contrast, in Beijing Zhongguancun download speed 50Kbps, really embodies the WiMAX "mobile version" and "fixed version".

However, this very attractive services in first-year experience of Waterloo.

Korea's KT company unlimited unified service charge for KRW 16000 per month (approximately US $ 17.60). KT company even gives it away via the USB port on the laptop, these preferential WiBro adapter will attract less than 1 million user network Korea, it is worth thinking about.

IV. operation mode

Also in the cultivation of Beijing this virgin land of wireless city CLP huatong, how to break through the bottleneck charges making operations on track, may decide China's 6 major wireless city's future.

6 major cities in China to build WiMAX wireless broadband metropolitan area common feature is that not a few large operators-led (and of course PTD in order to balance the resources 3G and WiMAX, the introduction of competition policy is also acceptable) led by local government, through preferential policies, creation of favorable conditions, authorized a small and medium-sized carriers invest funds for construction and maintenance, and abroad, such as wireless cities like San Francisco. In addition to the 6 largest city, Qingdao and other places also have WiMAX small-scale pilot.

Small and medium-sized carriers of strength, of course, cannot be equated with the major carriers, wireless city is completed, the charging mode, marketing operations, network maintenance, standardization, business processes are yet to be explored.

Currently, the global wireless cities in operations there are three modes:

First, a single large, independent building and put the wireless network as utilities, government budgetary allocations, wireless network construction and operation/maintenance, to residents and visitors to provide free or low-cost services.

This charity model, do not allow users access to truly affordable. However, few countries or regions adopt this pattern. Because this mode requires the full burden of government operations, Wi-Fi rely on tax administration and may constitute an economic burden; second, there is no profit, not the competition mechanism, the network operator — Government, namely the lack of incentive mechanism, and finally transformed into a "face-saving"; and thirdly, civil servants and not enough on user demand, network quality of service are difficult to grasp; fourth, once wireless network problems, the Government because of its workflow constraints, relatively slow response times and latency. Moreover, even if these defects are overcome, the Government still faces and operators ' interests is difficult to weigh the issues — from government operations of the free wireless network, the biggest impact is traditional operators "territory". Prior to this, to provide the public with free Wi-Fi in the whole city France Paris City Government on the Government by France Telecom "," free Wi-Fi was forced to stop, is a living example. Moreover, several 3G operators also had requested the Government to free Wi-Fi and 3 g licensing questions answered.

The second model, the traditional telecommunications operators to complete the wireless city's construction and operations.

However, this pattern in the current wireless city development in its infancy, it appears that more than reality. If you want to enable operators to provide free wireless network, their only power is to increase customer stickiness. But to let operators are mainly playing free wireless city pay, slim, and if you allow operators to charge, then the wireless network charges how pricing and became the new challenges.

The third mode is based on the above two patterns, is currently being more countries in a manner that would be for the Government and operators to work together to establish a wireless city.

In this mode, the Government's role is to lead and supervise, operators responsible for the construction and operation/maintenance. Currently, Singapore's "wisdom countries in 2015" program on the adoption of Wireless @ SG this mode. While Beijing and other cities are also 6-merchant community advocate. Suppose the CLP huatong survived lifetime, has stood on the fee system is not a cold Beijing people's test, it is still in front of a pile of Tiger. For example, WiMAX security issues. Wireless network easier than wired network hacking, wireless Internet access without identification, that the user can directly use, privacy protection, data encryption, will be on CLP huatong, carrier safety challenges. Secondly, WiMAX and TD-SCDMA competition issues, has always been the traditional operators are most concerned about. Because WiMAX in data transmission characteristics of high bandwidth, low-cost, on the 3 g network formed a certain alternative to causing greater impact, which may damage the Telecom and mobile operators that have the interest for a long time it has been in the 3 g network construction on a large number of investments. This requires a comprehensive consideration of the Government.

In short, the global construction and planning of the wireless city has more than 1000 mature operational mode is still not established.

Beijing, as the first wireless city in China, is experiencing a revolutionary exploration, we look forward to the Olympic Games to become China's network of the stage, to honour the commitments to the world of Beijing.