Even though the functionalities of IEEE 802.11, and GSM networks are different, the handover proce-dures have several similarities. The two networks use a separate signal (beacon, BCCH) with a constanttransmit power in order to enable RSS measurements for handover decisions. While the beacon in802.11 is on the same channel as data, it is on different physical channels in GSM. The primary differ-ence is the fact that the circuit-switched voice networks have NCHO while data networks prefer MCHO.In both cases, channel monitoring is always performed at the terminal. When the handover control iswith the network, the MH has to transmit the measured information to the decision entity.
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