Method for reducing channel scanning time
First Claim
1. A method for scanning channels of a wireless communication system comprising the steps of:
- scanning a first set of channels;
saving information obtained during said step of scanning said first set of channels;
determining a second set of channels;
determining which channels of said second set of channels do not coincide with said first set of channels; and
scanning predetermined channels of said second set of channels which do not coincide with said first set of channels.
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Accused Products
Abstract
A unique method improves channel scanning by reducing the time required to scan channels. The method reduces the number of channels which must be scanned using information previously obtained in a scan. If two sets of channels which overlap are scanned in two separate scanning steps (522), information obtained in a first channel scan can be used, thereby eliminating the time required for a second channel scan. For example, if the dedicated control channels and the paging channels of a cellular telephone system overlap, the channels which overlap need not be scanned during the channel scan of the paging channels. The method further reduces scanning time by ending the channel scanning of a particular channel if an undesired channel type is detected (808).
92 Citations
20 Claims
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1. A method for scanning channels of a wireless communication system comprising the steps of:
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scanning a first set of channels; saving information obtained during said step of scanning said first set of channels; determining a second set of channels; determining which channels of said second set of channels do not coincide with said first set of channels; and scanning predetermined channels of said second set of channels which do not coincide with said first set of channels. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for scanning channels of a wireless communication system comprising the steps of:
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scanning a set of dedicated control channels; saving information obtained during said step of scanning said set of dedicated control channels; determining a paging channel range; determining which paging channels of said paging channel range do not coincide with said dedicated control channels; and scanning predetermined paging channels of said paging channel range which do not coincide with said control channels. - View Dependent Claims (9, 10, 11)
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12. A method for scanning channels of a wireless communication system comprising the steps of:
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scanning each dedicated control channel of said wireless communication system; saving the signal strength for each dedicated control channel; sorting the dedicated control channels in order from strongest signal strength to weakest signal strength; attempting to acquire a word sync on the strongest channel of said dedicated control channels; attempting to receive an overhead message for a first channel of said dedicated control channels on which a word sync was acquired; determining a set of paging channels after an overhead message is received; and determining if the set of paging channels is a subset of said dedicated control channels. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification