Method of and apparatus for pilot set maintenance
First Claim
1. A method of maintaining a Pilot Set in a digital communication system that utilizes Code Division Multiple Access, the Pilot Set including an Active Set of active pilots, a Candidate Set of candidate pilots, a Pre-candidate Set of pre-candidate pilots, and a Neighbor Set of neighbor pilots, the method comprising the steps of:
- scanning the entire Active Set of active pilots;
scanning the entire Candidate Set of candidate pilots after scanning the entire Active Set; and
scanning the pre-candidate pilots without intervening scans of the active pilots or candidate pilots until all but a predetermined number of pre-candidate pilots have been promoted to the Candidate Set or demoted to the Neighbor Set.
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Accused Products
Abstract
An apparatus (100) maintains a Pilot Set in a digital communication system that utilizes Code Division Multiple Access. The apparatus comprises a logic and control circuit (113) for providing instructions to a searcher receiver (109). The searcher receiver, in response to the instructions, sequentially scans active pilots, then candidate pilots, and then pre-candidate pilots. The scan of the pre-candidate pilots continues until all but a predetermined number of pre-candidate pilots have been promoted or demoted. Then the searcher receiver alternately scans the predetermined number of pre-candidate pilots and the neighbor pilots. The searcher receiver terminates alternate scans of the predetermined number of pre-candidate pilots and the neighbor pilots when a one of the neighbor pilots is promoted, and resumes the scan of the pre-candidate pilots.
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Citations
21 Claims
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1. A method of maintaining a Pilot Set in a digital communication system that utilizes Code Division Multiple Access, the Pilot Set including an Active Set of active pilots, a Candidate Set of candidate pilots, a Pre-candidate Set of pre-candidate pilots, and a Neighbor Set of neighbor pilots, the method comprising the steps of:
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scanning the entire Active Set of active pilots; scanning the entire Candidate Set of candidate pilots after scanning the entire Active Set; and scanning the pre-candidate pilots without intervening scans of the active pilots or candidate pilots until all but a predetermined number of pre-candidate pilots have been promoted to the Candidate Set or demoted to the Neighbor Set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of maintaining a Pilot Set in a digital communication system that utilizes Code Division Multiple Access, the Pilot Set including an Active Set of active pilots, a Candidate Set of candidate pilots, a Pre-candidate Set of pre-candidate pilots, and a Neighbor Set of neighbor pilots, the method comprising the steps of:
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(a) scanning the entire Active Set; (b) scanning the entire Candidate Set after scanning the entire Active Set; (c) scanning at least a subset of the Pre-candidate Set and the Neighbor Set without intervening scans of the Active Set or the Candidate Set after scanning the entire Candidate Set, until an initiation event occurs; and (d) repeating steps (a) through (c) when the initiation event occurs. - View Dependent Claims (16, 17, 18)
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19. An apparatus for maintaining a Pilot Set in a digital communication system that utilizes Code Division Multiple Access, the Pilot Set including an Active Set of active pilots, a Candidate Set of candidate pilots, a Pre-candidate Set of pre-candidate pilots, and a Neighbor Set of neighbor pilots, the apparatus comprising:
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a logic and control circuit for providing instructions; and a searcher receiver, responsive to the instructions, to sequentially scan the entire Active Set of active pilots, then the entire Candidate Set of candidate pilots, and then the pre-candidate pilots without intervening scans of the Active Set or Candidate Set, wherein the scan of the pre-candidate pilots continues until all but a predetermined number of pre-candidate pilots have been promoted to the Candidate Set or demoted to the Neighbor Set. - View Dependent Claims (20, 21)
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Specification