Method and apparatus for efficient selection and acquisition of a wireless communications system
First Claim
1. A method of selecting a desirable system from a list of wireless communications systems stored in a mobile station, comprising the steps of:
- maintaining, in the mobile station, a system priority data table based on acquisition/registration attempts by the mobile station with wireless communication systems, the system priority data table including a plurality of entries, each entry representing a single system acquisition/registration attempt by the mobile station and including a signal acquisition identifier, a power measurement, a system access identifier, and a system lost identifier;
generating a priority data summary table in the mobile station using priority criteria determined from the system priority data table, the priority data summary table including an acquisition success rate field, a last power measurement field, an access success rate field, and a system lost rate field;
predicting whether a future system acquisition/registration attempt on a selected wireless communications system is likely to be successful based on the priority data summary table;
predicting whether the selected wireless communications system is likely to be useable if the future system acquisition/registration attempt is successful based on the priority data summary table;
selecting, by the mobile station, a group of wireless communications systems from the list of wireless communications systems stored in the mobile station in accordance with a predetermined system selection procedure, the group of wireless communications systems having a first system acquisition order;
reprioritizing, by the mobile station, the group of wireless communications systems in accordance with the priority data summary table, the reprioritized group of wireless communications systems having a second system acquisition order based upon the likelihood of system acquisition/registration and the likelihood of usability; and
attempting, by the mobile station, to acquire a desirable system based on the reprioritized group of wireless communications systems.
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Accused Products
Abstract
A mobile station includes processing circuitry and a memory storing a preferred roaming list and system priority data. The processing circuitry is adapted to detect a communications event for a currently selected wireless communications system and update an entry in the system priority data to reflect the occurrence of the detected communications event. The use of stored statistical information improves the efficiency of the system selection and acquisition process. In operation, a group of wireless communications systems is selected from the preferred roaming list in accordance with a predetermined system acquisition procedure. The group is reprioritized using the priority data and the mobile station attempts to select the wireless communications system having the highest priority in the reprioritized group. The reprioritization may include sorting the group using the priority data and removing systems from the group that do not meet certain priority criteria.
30 Citations
20 Claims
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1. A method of selecting a desirable system from a list of wireless communications systems stored in a mobile station, comprising the steps of:
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maintaining, in the mobile station, a system priority data table based on acquisition/registration attempts by the mobile station with wireless communication systems, the system priority data table including a plurality of entries, each entry representing a single system acquisition/registration attempt by the mobile station and including a signal acquisition identifier, a power measurement, a system access identifier, and a system lost identifier; generating a priority data summary table in the mobile station using priority criteria determined from the system priority data table, the priority data summary table including an acquisition success rate field, a last power measurement field, an access success rate field, and a system lost rate field; predicting whether a future system acquisition/registration attempt on a selected wireless communications system is likely to be successful based on the priority data summary table; predicting whether the selected wireless communications system is likely to be useable if the future system acquisition/registration attempt is successful based on the priority data summary table; selecting, by the mobile station, a group of wireless communications systems from the list of wireless communications systems stored in the mobile station in accordance with a predetermined system selection procedure, the group of wireless communications systems having a first system acquisition order; reprioritizing, by the mobile station, the group of wireless communications systems in accordance with the priority data summary table, the reprioritized group of wireless communications systems having a second system acquisition order based upon the likelihood of system acquisition/registration and the likelihood of usability; and attempting, by the mobile station, to acquire a desirable system based on the reprioritized group of wireless communications systems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A mobile station comprising:
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a memory, in the mobile station, for storing a preferred roaming list, a system priority data table, and a priority data summary table, the preferred roaming list including a first plurality of system identifiers and corresponding acquisition parameters; and processing circuitry, in the mobile station, for; maintaining the system priority data table in response to acquisition/registration attempts by the mobile station with wireless communication systems, the system priority data table including a plurality of entries, each entry representing a single system acquisition/registration attempt by the mobile station and including a signal acquisition identifier, a power measurement, a system access identifier, and a system lost identifier; generating a priority data summary table in the mobile station using priority criteria determined from the system priority data table, the priority data summary table including an acquisition success rate field, a last power measurement field, an access success rate field, and a system lost rate field; predicting whether a future system acquisition/registration attempt on a selected wireless communications system is likely to be successful based on the priority data summary table; predicting whether the selected wireless communications system is likely to be useable if the future system acquisition/registration attempt is successful based on the priority data summary table; selecting a group of wireless communications systems from the preferred roaming list in accordance with a predetermined system selection procedure, the group of wireless communications systems having a first system acquisition order; and reprioritizing the group of wireless communications systems in accordance with the priority data summary table, the reprioritized group of wireless communications systems having a second system acquisition order based upon the likelihood of system acquisition/registration and the likelihood of usability. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification