Method and apparatus for scanning sectors in order of distance from mobile station
First Claim
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1. In a mobile station, a method comprising:
- storing in data storage of the mobile station a list of wireless coverage sectors and their respective locations;
determining a geographic location of the mobile station;
sorting wireless coverage sectors of the list in order of distance between their locations and the determined mobile station location, so as to produce a sorted list of wireless coverage sectors, wherein sorting wireless coverage sectors of the list in order of distance between their locations and the determined mobile station location, so as to produce a sorted list of wireless coverage sectors comprises (a) filtering the list to exclude wireless coverage sectors that are in any of an active set of the mobile station, a candidate set of the mobile station, and a neighbor set of the mobile station, (b) for each remaining wireless coverage sector in the list, determining a distance between the wireless coverage sector'"'"'s location and the determined location of the mobile station, and (c) sorting the wireless coverage sectors of the list in order from closest to the mobile station to farthest from the mobile station, to produce the sorted list; and
scanning for pilot signals from the wireless coverage sectors of the sorted list, in the order sorted.
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Abstract
A mobile station will sort wireless coverage sectors in order of distance of the sectors from the mobile station, and the mobile station will then scan for pilot signals from the sectors in the sorted order. The invention can be applied advantageously to provide an order of scanning remaining set sectors in a mobile station operating according to a code division multiple access protocol.
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Citations
15 Claims
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1. In a mobile station, a method comprising:
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storing in data storage of the mobile station a list of wireless coverage sectors and their respective locations; determining a geographic location of the mobile station; sorting wireless coverage sectors of the list in order of distance between their locations and the determined mobile station location, so as to produce a sorted list of wireless coverage sectors, wherein sorting wireless coverage sectors of the list in order of distance between their locations and the determined mobile station location, so as to produce a sorted list of wireless coverage sectors comprises (a) filtering the list to exclude wireless coverage sectors that are in any of an active set of the mobile station, a candidate set of the mobile station, and a neighbor set of the mobile station, (b) for each remaining wireless coverage sector in the list, determining a distance between the wireless coverage sector'"'"'s location and the determined location of the mobile station, and (c) sorting the wireless coverage sectors of the list in order from closest to the mobile station to farthest from the mobile station, to produce the sorted list; and scanning for pilot signals from the wireless coverage sectors of the sorted list, in the order sorted. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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storing in data storage of a mobile station at least one list of wireless coverage sectors, wherein the at least one list of wireless coverage sectors comprises (i) an active set of one or more sectors, (ii) a candidate set of one or more sectors, and (iii) a neighbor set of one or more sectors; storing in data storage of the mobile station a further list of wireless coverage sectors and their locations; determining a geographic location of the mobile station, and sorting wireless coverage sectors of the further list in order of distance between their locations and the determined mobile station location, so as to produce a sorted list of wireless coverage sectors, wherein sorting wireless coverage sectors of the further list in order of distance between their locations and the determined mobile station location, so as to produce a sorted list of wireless coverage sectors comprises (a) filtering the further list to exclude wireless coverage sectors that are in any of the active set, the candidate set, and the neighbor set, (b) for each remaining wireless coverage sector in the further list, determining a distance between the wireless coverage sector'"'"'s location and the determined location of the mobile station, and (c) sorting the wireless coverage sectors of the further list in order from closest to the mobile station to farthest from the mobile station, to produce the sorted list; the mobile station scanning for incoming pilot signals from the wireless coverage sectors of the at least one list, wherein scanning for incoming pilot signals from the wireless coverage sectors of the at least one list comprises scanning for incoming pilot signals from the wireless coverage sectors of the active set, of the candidate set, and of the neighbor set; and the mobile station scanning for incoming pilot signals from the wireless coverage sectors of the sorted list in the sorted order. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification