Method for responding to DCCH pointers
First Claim
1. A method for responding to a digital control channel pointer received on an analog control channel by a wireless communications mobile unit, comprising:
- a) camping on an analog control channel;
b) thereafter receiving a first digital control channel pointer designating a first pointed-to digital control channel, said first pointer including channel identification for said first pointed-to control channel;
c) reading service provider information from said first pointed-to control channel indicating the service provider for said first pointed-to control channel; and
d) thereafter re-camping on said analog control channel without performing an intervening power-up scan if said service provider information indicates that said service provider is from a forbidden class.
1 Assignment
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Accused Products
Abstract
A method for responding to a pointer received on an analog control channel pointing to a control channel belonging to a forbidden service provider includes avoiding a power-up scan and resuming camping on the analog control channel. A wireless communications mobile unit is camped on an analog control channel may receive a channel pointer to a digital control channel. If the digital control channel has acceptable received signal strength, the service provider information for that control channel is checked. If the control channel belongs to a non-forbidden service provider, the mobile unit camps on the digital control channel. If the control channel belongs to a forbidden service provider, the mobile unit returns to camping on the analog control channel without performing an intervening power-up scan. By avoiding power-up scans when the pointed-to channel belongs to a forbidden service provider, less power is consumed and users receive more consistent communications service.
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Citations
24 Claims
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1. A method for responding to a digital control channel pointer received on an analog control channel by a wireless communications mobile unit, comprising:
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a) camping on an analog control channel; b) thereafter receiving a first digital control channel pointer designating a first pointed-to digital control channel, said first pointer including channel identification for said first pointed-to control channel; c) reading service provider information from said first pointed-to control channel indicating the service provider for said first pointed-to control channel; and d) thereafter re-camping on said analog control channel without performing an intervening power-up scan if said service provider information indicates that said service provider is from a forbidden class. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for responding to a digital control channel pointer received on an analog control channel by a wireless communications mobile unit, comprising:
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a) camping on an analog control channel; b) thereafter receiving a first digital control channel pointer designating a first pointed-to digital control channel, said first pointer including channel identification for said first pointed-to control channel; c) storing said channel identification for said first pointed-to control channel; d) checking the received signal strength of said first pointed-to control channel; e) reading service provider information from said first pointed-to control channel indicating the service provider for said first pointed-to control channel if said received signal strength is acceptable; and f) thereafter re-camping on said analog control channel without performing an intervening power-up scan if said service provider information indicates that said service provider is from a forbidden class. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method for responding to a digital control channel pointer received on an analog control channel by a wireless communications mobile unit, comprising:
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a) receiving a list of forbidden service provider identification information; b) camping on an analog control channel; c) thereafter receiving a first digital control channel pointer designating a first pointed-to digital control channel, said first pointer including channel identification for said first pointed-to control channel; d) storing said channel identification for said first pointed-to control channel; e) checking the received signal strength of said first pointed-to control channel in the mobile unit in analog operating mode; f) thereafter checking the received signal strength of said first pointed-to channel with the mobile unit in digital operating mode if said analog operating mode signal strength is acceptable or returning to said camping on said analog control channel if said analog operating mode signal strength is not acceptable; g) reading service provider information from said first pointed-to control channel indicating the service provider for said first pointed-to control channel if said received signal strength in digital operating mode is acceptable; and h) thereafter re-camping on said analog control channel without performing an intervening power-up scan if said service provider information indicates that said service provider is from a forbidden class or camping on said first pointed-to control channel if said service provider information indicates that said service provider if not from a forbidden class. - View Dependent Claims (21, 22, 23, 24)
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Specification