| 摘要 |
A wireless communication system and a mobile station employ at least one threshold to evaluate the quality of transmissions from a serving base station to determine when the mobile station enters a Dead Zone adjacent a border cell of the system. Such thresholds not only consider the ratio of carrier energy (Ec) to interference (Ec/Io) but also consider the energy of the carrier itself. When the relevant measured (or calculated) carrier energy Ec and/or carrier energy to interference ratio Ec/Io are passed, the mobile station performs system reselection, attempting to acquire a different system/carrier. The thresholds employed may be passed from the base station to the mobile station in the System Parameters message, for example.
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