| 摘要 |
A system and method of instant messaging is disclosed and includes transmitting an indication from a wireless device to an instant messaging server that instant messaging is enabled at the wireless device. Further, a plurality of communication signals between the wireless device and a plurality of base stations are monitored. After determining that the wireless device has one remaining communication signal with one base station, the one remaining communication signal is monitored. Moreover, a time history of signal strength data for the one remaining communication signal is recorded and a slope of the signal strength data is determined. Based on the slope of the signal strength data, it can be determined whether an imminent loss of signal is about to occur at the wireless device.
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