Traditional Culture Encyclopedia - Hotel franchise - How to calculate the speed (bandwidth) of wireless Internet access in five-star hotels? What are the requirements?

How to calculate the speed (bandwidth) of wireless Internet access in five-star hotels? What are the requirements?

Wireless Internet connection is mainly divided into wireless broadband, GPRS (General Packet Radio) and local access wireless link.

1. Wireless broadband service providers are nothing more than China Telecom and China Mobile Communication (Unicom), because this is basically a monopoly industry in China. As far as Nanjing is concerned,

A. The wireless broadband of telecommunications has not been opened, probably because the market demand has not reached a certain amount, the signal transmission principle is similar to that of PHS base station transmission, and the coverage area of a base station is limited, so the cost is very high. Comparatively speaking, Zhejiang Telecom launched this service in a certain range earlier, called "Tianyitong", with a nice name. Careful friends can also see the advertisement of "Tianyi Tong" on Zhejiang Satellite TV. The normal bandwidth should not be less than 10M.

B. Nanjing's mobile communication already has this service, which is WLAN (wireless local area network), which is also called "follow the e-line". Also affected by the high cost, the goal of China Mobile Communication is "at least in the provincial capital cities, the signal range covers airports, high-end office buildings and five-star hotels." So there are only three places in Nanjing with signals: Lukou Airport, several exclusive buildings for electronic products on Zhujiang Road (the fourth floor of Bainaohui seems to be free) and the mobile main business hall on Huju Road (demonstrating this business). You can start this service by sending SMS or calling 025 1860. The usage fee is deducted from the phone bill, and the most basic free usage fee is only 2 cents per minute, which is 12 yuan per hour, which is not too high. Moreover, package discounts are large, such as 20 yuan's one-month package 10 hour, the rest 1 cent/minute, and business packages.

A few days ago, I took my computer to the mobile hall of Huju Road and felt it once. Because it is equivalent to private line access, the signal has no effect on interference. The bandwidth is 1 1M, far exceeding the speed of ADSL or fiber-free VDSL. It's cool to use, almost one of the fastest speeds I've ever seen. The fastest speed is our home walking in the rain. Unfortunately, when I got home, the wireless network card (necessary for laptop wireless Internet access) became the deaf's ear again.

2.GPRS is a strong service brand of mobile communication, that is, General Packet Radio Access. After opening this service, mobile phones with GPRS function can not only browse the Internet, but also be used together with laptops. After being connected by infrared ray or data cable, the mobile phone is equivalent to a modem. The theoretical network speed exceeds 140 Kb/s, but the actual time I use is only 38,400 KB/s, which is 37.5Kb/s, which is similar to telephone line dialing, but I can basically realize real wireless interconnection anywhere as long as the mobile phone has a signal. The tariff is a bit scary. According to the traffic, it is basically free to use 0.03 yuan /Kb, and the package is divided into 20, 50, 100, and 200 monthly subscriptions, and only the traffic from 1M to tens of meters is delivered, which exceeds 0.0 1 yuan /Kb. I don't know the exact concept of flow, but it is a two-way flow. For example, I downloaded a Jay Chou song (about 4M) on my mobile phone, and it is free to use without a package, at least 120 yuan! So friends who want to play this service should keep calm. Maybe they will have a good time today, and their mobile phones won't even send text messages tomorrow! It seems that we students can't fully bear the upper limit of 500 yuan for one month. It is said that there is a GPRS mobile phone card of Zhejiang Mobile Network on the market, 650 yuan Baonian. It seems that people who really want to play this mobile phone are all in contact with bookish (see Hutongkou) to buy it.

Unicom has a similar service, but it is based on CDMA 1X network, so it needs a CDMA mobile phone with Internet connection, and the speed is 153.6Kb/s, which is faster than GPRS and much cheaper for Unicom.

3. Local * * * wireless links refer to some companies or office buildings that need wireless office functions. A small signal transmitter converts broadband data into signal transmission, and links are shared through signal transmission within its range. This is the wireless local Internet, so playing CS should be quite fresh. Some access points for home wireless Internet access are home versions of the device. In developed countries such as Japan, this kind of signal device is more common. According to friends in Singapore, some universities, such as Nanyang Technological University, have network signals on campus and should use this equipment. The laptop there is almost a necessary learning tool for students! Indeed, "the gap is all-round."

4. In addition, with the improvement of the signal system, you can use the wireless local telephone "PHS" to access the Internet, which has an advantage in price, and the same cost as dialing at home, that is, the wireless dial-up Internet access is not bad, which looks a bit like the connection between GPRS and computer. Should, reluctantly, can also be regarded as a way of wireless interconnection.