Intelligent Network Video: Understanding Modern Video Surveillance Systems by Fredrik Nilsson & Communications Axis

Author:Fredrik Nilsson & Communications Axis [Nilsson, Fredrik]
Language: eng
Format: azw3
Publisher: CRC Press
Published: 2016-12-01T05:00:00+00:00

10.6.3 Wireless interoperability for microwave access

WiMAX is a long-distance mobile communications technology specified in the IEEE-802.16 standard. The target market is metropolitan area network applications, where WiMAX is expected to compete with UMTS. The achievable data rate will depend on the distance. It is expected that many mobile communications providers in the future will offer WiMAX.

10.7 PERFORMANCE OF WIRELESS NETWORKS

The process of transferring data wirelessly is much more difficult than transferring it by cable, and there are significant data overheads for management, error recognition, and security. In the case of wired Ethernet, the overhead is relatively small; that is, the net data rate is close to the gross data rate.

The net data rate for a WLAN often amounts to considerably less than the gross data rate and is sometimes as low as 50% of the specified gross. When designing a wireless network for a video surveillance application and calculating the required bandwidth, the performance of the network must be taken into consideration to ensure that the desired frame rate is achievable.

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