The major cities for the construction of wireless technology system for wireless Wimax + Mesh, which is Wimax - wifi wireless backbone network, to converge each area of flow, and cable network connection, A Mesh - wifi wireless access layer, network access, terminal and small range of wireless data jump. Use Mesh - wifi as wireless access layer is:

1 Wifi technology, each link chain mature a variety of products, product price competition, cheaper.

2 Wifi technology development, all aspects of improving technology constantly emerging and formed astandardized and future development path clearly.

3 large quantities, mobile terminal Wifi, laptops and other electronic products of built-in Wifi function, potential customers and the market foreground huge tempting.

4 Meshwifi technology can effectively solve the urban construction of wireless network problems encountered in the ground, greatly reduce the cost of construction project, save, shorten the construction period.

Although there are more advantages, but Meshwifi network also has certain problem, besides has introduced the interference and different frequency switching, mobile video service as one of the new features of the business, how to realize more perfect is the need to consider.

In the industry in high-speed mobile video monitoring (car), such as the needs of the ministry of public security, fire department of mobile patrol mobile video, emergency government parties, such as emergency linkage demand of regional Mesh network to realize Wifi - under high-speed mobile video created the conditions.

But because the MESH factory in technology implementation, the system can realize the differences between the performance is very big also. Performance is mainly manifested in the following two aspects: 1) in many movement speed, high speed, still can ensure the high quality of connection. 2), video quality mainly embodies in real-time video to the real-time and require very high bit-error rates.

From the perspective of public information industry, most MESH factory can realize real-time mobile video speed, but for more than 70 km/h circumstances, can realize the relatively small. Due to the fast moving, car terminal switch will be very frequently, routing updates requirements are very high, and wireless environment on the stability of bandwidth will influence.

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