Patent ID: 8730921

Claim:
A method for implementing call re-establishment using a user equipment (UE) configured to communicate with a wireless communication network, comprising: determining a signal level between the UE and a serving cell; receiving signal level threshold values for two or more neighbor cells; and averaging the signal level threshold values of each of the two or more neighbor cells to determine a call re-establishment signal level threshold; detecting at least one of a radio link failure and a protocol failure of a connection between the UE and the serving cell; comparing the signal level between the UE and the serving cell to a the call re-establishment signal level threshold defining a minimum receive signal level that must be met before call re-establishment may be initiated; when the signal level between the UE and the serving cell exceeds the call re-establishment signal level threshold, initiating call re-establishment by: selecting a target cell of the wireless communication network, the target cell being a neighbor cell of the serving cell, comparing a received signal level for the target cell to a signal level threshold of the target cell, wherein the signal level threshold of the target cell is greater than the call re-establishment signal level threshold, and when the received signal level for the target cell exceeds the signal level threshold of the target cell, initiating call re-establishment on the target cell; and when the signal level between the UE and the serving cell does not exceed the call re-establishment signal level threshold, not initiating call re-establishment on the target cell.