How does Wi-Fi survive in the 4G era?

Where are the locations of Wi-Fi when different technologies compete for the future of mobile highways?

Multiple wireless technologies are competing to become the next-generation Transmission System for Mobile Video and collaborative business applications and services. WiMAX and LTELong-Term Evolution) are currently the leader in the WAN field.

Qualcomm's ultra-mobile broadband UMB) technology ranks third, although it is eager to run at a speed above Mbps more than twice the speed that LTE and WiMAX ultimately hope to achieve ), however, the actual situation is that there is already a big gap with the first two. In a report at the end of last year, ABI Research set out that UMB lacks a robust partner ecosystem, and both LTE and WiMAX have established such an ecosystem) this column is one reason to describe UMB's prospects as "dim.

Both LTE and WiMAX use smart antenna functions and IP technology. Although they provide different speeds, they all desire to be used around the world. In the end, some dual-mode devices support both LTE and WiMAX, and users cannot notice which network meets the data needs at a certain time point.

What is the situation of Wi-Fi? It may face various threats. On the one hand, it comes from the rapid development of mobile WAN technology; on the other hand, the construction of micro-cell Femtocell) base stations, micro-cell Picocell) base stations and other base stations to catch up quickly. In addition, it cannot be ignored that some enterprises may need to install a mobile WAN System in the building to comply with Wireless Public Security Regulations, which is another threat to wi-fi.

Some vendors imagine that Wi-Fi is in the access network, while WiMAX/LTE is in the return part of the network. However, mobile WAN is also moving forward in the access network field: manufacturers of multi-frequency distributed antenna systems, such as LGC Wireless and MobileAccess, add WiMAX modules to their systems. On the client side, Intel's temvina processor platform provides optional Embedded Dual-mode Wi-Fi and WiMAX connections.

All these wireless networks are likely to be widely used in one application or another. Although it is hard to imagine whether a larger bandwidth capacity is required, or even the Cisco high-end Telepresence system only needs 15 Mbps ), however, obtaining more bandwidth within a short distance is always the first thing to do. Therefore, a mobile LAN may always exist.

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