3G cards that mobile service providers currently sell to customers are locked, using only the internal network.Therefore, company customers will have to sign long-term subscription contracts to enjoy reduced prices.From Egan's point of view, there is only a way to end that kind of business - but remember it is not easy - it is possible to change the balance for corporate customers and competitors using the WiMAX system.
Current Analysis analyst Eddie Hold at Current Analysis agrees that buying a 3G radio laptop that is locked by a mobile service provider to connect to another network will make the company customer vulnerable. tie.But he did not agree with Egan's view of the overall strategy.Because PC Card modems used for EV-DO systems make laptops run out of battery faster than Wi-Fi attached to the computer and have lower performance, Hold said.
Hold's advice should only buy 3G cards for some employees who really need it.Most employees can still finish work in places where Wi-Fi is available, he said.
Later, companies can buy a combination of connection technologies.Sprint Nextel currently has a license to own a variety of technologies on most US land and these technologies can be approved for mobile WiMAX applications.
(General Minh Khoi)
(1) Wi-Fi (Wireless Fidelity): Trade name for product compatibility standards for wireless intranet. It allows mobile devices such as laptops and PDAs to connect to the local network, but is currently commonly used for Internet access, wireless VoIP calling.
(2) OFDM (Orthogonal Frequency-Division Multiplexing): A transmission technique based on the idea of frequency-division multiplexing (FDM). In FDM technology, many signals are sent at the same time but on different frequencies. In OFDM technology, there is only one device that transmits signals over many independent frequencies (from a few dozen to several thousand).
(3) Worldwide Interoperability for Microwave Access: WiMAX is similar in concept to Wi-Fi but there are some improvements to improve performance and allow connection at longer distances.
(4) IEEE 802.11n : A new addition to the IEEE 802.11 wireless LAN set of standards by the Working Group of the Local Area Network (LAN) / Urban Area Network (MAN) of IEEE ( American Institute of Electrical and Electronic Engineering built). The 802.11n standard will make the network work longer than current networks.
(5) 3G : 3rd generation mobile technology. Services using this technology allow audio data transmission (calling) and no sound (such as downloading information, exchanging information). e-mail and texting.
(6) EV-DO (Evolution Data Only / Evolution Data Optimized): Wireless broadband data protocol. Currently many CDMA mobile service providers in many countries around the world apply EV-DO, including Venezuela, Mexico, Brazil, Japan, Korea, Israel, USA, Australia and Canada.
(7) Universal Mobile Telecommunications System ( UMTS ): One of the three current mobile technologies. UMTS is sometimes called 3GSM to distinguish it from other networks and emphasizes the combination of 3G nature of this technology and the GSM standard.
(8) HSDPA (High-Speed Downlink Packet Access): New mobile protocol;Also known as 3.5G (or '3½G').