Claims
- 1. A method for initial synchronization of a mobile terminal with a communication system, the mobile terminal having a list of candidate carriers for the communication system, the method comprising the steps of:selecting a first carrier from the list of candidate carriers, wherein the mobile terminal is not synchronized to the communication system; generating a power profile of the first carrier before attempting to synchronize to the first carrier; comparing the power profile of the first carrier to a first threshold criteria; and then synchronizing to the first carrier if the power profile of the first carrier satisfies the first threshold criteria.
- 2. A method according to claim 1 further comprising the steps of:selecting a second carrier from the list of candidate carriers if the power profile of the first carrier does not satisfy the first threshold criteria; generating a power profile of the second carrier before attempting to synchronize to the second carrier; comparing the power profile of the second carrier to a second threshold criteria; and then synchronizing to the second carrier if the power profile of the second carrier satisfies the second threshold criteria.
- 3. A method according to claim 2 wherein the second threshold criteria is more lenient than the first threshold criteria.
- 4. A method according to claim 1 wherein the synchronizing step includes the steps of:coarse synchronizing to the first carrier; and then fine synchronizing to the first carrier.
- 5. A method according to claim 4 wherein the synchronizing step includes the steps of:reading data from the first carrier; determining if the data is valid; and then repeating the selecting, generating, comparing and synchronizing steps if the data is not valid.
- 6. The method of claim 1 wherein the list of candidate carriers for the communication system comprises a list of candidate control channels for the communication system.
- 7. A synchronization system for initial synchronization with a communication system of a mobile terminal having a list of candidate carriers for the communication system, the synchronization system comprising:means for selecting a first carrier from the list of candidate carriers, wherein the mobile terminal is not synchronized to the communication system; means for generating a power profile of the first carrier before attempting to synchronize to the first carrier; means for comparing the power profile of the first carrier to a first threshold criteria; and means for synchronizing to the first carrier if the power profile of the first carrier satisfies the first threshold criteria.
- 8. The system of claim 7 wherein the list of candidate carriers for the communication system comprises a list of candidate control channels for the communication system.
- 9. A synchronization system for initial synchronization with a communication system of a mobile terminal having a list of candidate carriers for the communication system, the synchronization system comprising:a transceiver configured to receive a selected carrier; and a processor that selects a first carrier from the list of candidate carriers to be received by the transceiver, wherein the mobile terminal is not synchronized to the communication system, generates a power profile of the first carrier before attempting to synchronize to the first carrier, compares the power profile of the first carrier to a first threshold criteria, and synchronizes to the first carrier if the power profile of the first carrier satisfies the first threshold criteria.
- 10. The system of claim 9 wherein the list of candidate carriers for the communication system comprises a list of candidate control channels for the communication system.
RELATED APPLICATIONS
This application is a continuation of Application Ser. No. 09/173,328, filed Oct. 15, 1998 now U.S. Pat. No. 6,205,193.
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Continuations (1)
|
Number |
Date |
Country |
Parent |
09/173328 |
Oct 1998 |
US |
Child |
09/718167 |
|
US |