What changes do free WiFi bring?

Wireless cities are the focus of the 2011-2013 plan of action to promote intelligent city construction in Shanghai. Wireless local Area network wlan hotspot will basically cover urban important public places.

Last week, the free Wifi--i-shanghai added a fire to Shanghai's wireless city construction with news of its expansion.

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The Shanghai government announced that by the end of 2013, there were about 450 public places (including public transport hub waiting area, business District Lounge area, Park green and tourist recreation Area, convention and Exhibition Hall, cultural venues public activity area, General Hospital waiting area in Shanghai) with more intensive passenger flow and prominent window functions. Sports venues audience Activity area, the Administrative Service hall and other 9 types of areas to achieve WLAN coverage, to provide public users with a 2-hour free internet service.

Free wireless internet access sounds tempting, but will this model have a knock-on effect on existing networks? What changes will it bring to people's lives? The reply of the Shanghai Municipal Commission on several issues of concern to people.

1 Q: Which users does I-shanghai apply to?

A: Any user who signs a mobile phone service in a domestic telecom carrier (China Telecom, China Mobile, unicom) can access the password for free via his or her mobile phone. Foreign visitors who sign up for a mobile phone service abroad and who can roam in China can access the password via their mobile phone for free.

2. How to use I-shanghai service?

A: In the published I-shanghai services, users through the WiFi-enabled terminal equipment search and choose to connect I-shanghai wireless network, when the connection is successful, open the unified login portal through the browser page, according to the prompts to enter the mobile phone number and login password, 2-hour free wireless internet access is available after certification. Users can use SMS to obtain the login password according to the prompt on the unified login page.

3, why not in the published I-shanghai coverage site can not search the network or network signal weak?

A: We only provide I-shanghai free services to the public areas where users are more concentrated, such as the waiting room of the station, the reading area of the library, the street rest area of the Commercial Street circle and so on. To ensure a better signal connection, it is recommended that you adjust to the published coverage of the site specific coverage area of the Internet.

Because the WiFi technology used in I-shanghai is a point-like hotspot overlay, it is not possible to achieve a wide range of continuous coverage. If the use of mobile phone users Wi-Fi signal strength is lower than -65dbm, notebook users below the -70DBM, will directly affect the quality of network use.

4, why I-shanghai signal is good, but always unable to connect?

? A: The current access point (AP) host user has reached the upper limit, causing new users to be unable to connect.

5, why the network connection and log in successfully after the frequent drop line?

A: Because the WiFi technology used by I-shanghai is based on the 2.4GHz public band, the frequency of non-interference is only 3, the environment is more interference sources, too much electromagnetic interference caused the signal-to-noise ratio, which makes the network connection is unstable. Members of the public are advised to pay attention to the specific areas covered by the announced sites and to use I-shanghai services as far as possible in the published areas.

6, why the Internet speed is not fast?

A: In order to allow more people to use I-shanghai services to meet the Web browsing, mail delivery, instant messaging and other universal services, we have a certain limit on the single user bandwidth, online video, download and other high bandwidth applications to control. Currently, a single user download rate is limited to the highest 2mb/s, the lowest 300kb/s. If users need to use high bandwidth applications, please select a separate access to the operating enterprise's WiFi network, and pay the fee standard. In addition, the WiFi network uses shared export bandwidth, and more concurrent users will result in slower internet access.

7, why I-shanghai need to enter a mobile phone number to obtain the password way to the Internet?

A: According to the national regulatory requirements for information, users ' Internet behavior requirements can be traced back. Mobile phone number with the ownership of the unique and real-time text messages, using mobile phone number for authentication, information security issues, by tracing the number of people, login time, login location and access records, you can quickly lock the source of the problem. Therefore, from the perspective of security supervision, you need to enter your mobile phone number to obtain the Internet password.

8, use I-shanghai more than 2 hours after still want to use how to do? What about the charges?

A: In the same area covered by I-shanghai will also have a wireless network of telecommunications operators, 2 hours later, you can choose to log in to the operator's wireless LAN, and according to its tariff standards for use.

9. When is the bus and subway free wireless internet access?

A: I-shanghai mainly covers the city's more densely populated, window features prominent about 450 public places, other public places cover mainly through the market mechanism to promote the bus is not in this I-shanghai coverage plan. However, it is understood that the city's public transport operators have cooperated with telecom operators, plans to deploy WiFi network on the bus, the program is currently in the technical testing phase, and has been in some public transit lines open trial run, will be gradually promoted.

In addition, taking into account the subway crowd-intensive, short stay time, and I-shanghai use of the network signal and the use of the subway part of the communication signal between the problem, for the train operation and passenger safety, temporarily do not consider in the subway cover I-shanghai.

10, I-shanghai access point radiation?

A: There is radiation everywhere in the living environment, WiFi not covered areas also have a wide range of radiation, including TV Tower, High-voltage lines, substations, household appliances, office equipment and so on. The I-shanghai access point is not less than 500mW in accordance with the standard requirements, and the radiation intensity is not large compared with other radiation sources.