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CCNP Wireless (642-747 IUWMS) Quick Reference by Jerome Henry

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Chapter 2. Implement Mobility Services Engine Architecture

To provide Context-Aware Services, the Cisco Unified Wireless Network Infrastructure access points (AP) detect 802.11 devices signals and transmit their received signal strength indicator (RSSI) and signal-to-noise ratio (SNR) values to a wireless LAN controller (WLC). Periodically, the Cisco Wireless Control System (WCS) or a Mobility Services Engine (MSE) queries the WLC for the device’s RSSI and SNR values. Because Context-Aware Services relies on the ability to calculate the wireless device location and use this information to provide service or simply display the device position on a map, you can say that the WLCs collect 802.11 information but do not perform location. Location is ...

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