« PreviousContinue »
Da-shan Shiu, San Jose, CA (US); Thomas B Wilborn, San Diego, CA (US); Roland Reinhard Rick, Superior, CO (US); Srinivasa Rao Nagaram, San Diego, CA (US); Chalapathi Rao Emani, San Diego, CA (US); Ramachandran Gurumoorthy, San Diego, CA (US); Jesus Chao, San Diego, CA (US); Steve Doerfler, Erie, CO (U S); Peter Ang, San Diego, CA (US); Srividya Kunisetti, San Diego, CA (U S); Gwang-Hyun Gho, San Diego, CA (US); Thomas Nelson Bailey, Boulder, CO (US)
Assignee: QUALCOMM Incorporated, San
Diego, CA (US)
Notice: Subject to any disclaimer, the term of this
patent is extended or adjusted under 35
U.S.C. l54(b) by 434 days.
This patent is subject to a terminal dis-
Appl. No.: 12/029,849
Filed: Feb. 12, 2008
Prior Publication Data US 2008/0215573 A1 Sep. 4, 2008
(58) Field of Classification Search ................ .. 370/328, 370/335, 342, 441; 375/150, 147 See application file for complete search history.
U.S. PATENT DOCUMENTS 5,440,597 A 8/1995 Chung et al. (Continued)
FOREIGN PATENT DOCUMENTS 03030390 4/2003
ETSI TS 125 211 v 5.3.0“Universal Mobile Telecommunications System (UMTS); Physical channels and mapping of transport channels onto physical channels (FDD) (3GPP TS 25.211 version 5.3.0 Release 5)”, ETSI TS 125 211 v 5.3.0 (Dec. 2002), pp. 1-52.
Primary Examiner * Jason E Mattis Assistant Examiner * Kibrom T Hailu (74) Attorney, Agent, or Firm * Francois A Pelaez
Techniques for inter-frequency neighbor list searching are disclosed. Embodiments disclosed herein address the need for inter-frequency neighbor list searching. In one embodiment, a searcher is deployed to search a PN space with a first set of search parameters and to return search results. A subset of those results is selected, along with a previously saved search result, to form a set of PN locations for a second search. The second search is performed on a window around each of the PN locations, using a second set of search parameters. The maximum peak from the second search is saved for use in future iterations. In one embodiment, the subset is selected as the highest energy level peaks from the first search. In one embodiment, if a maximum peak is deemed to correspond to a valid base station when the position of that maximum peak is within a pre-deterrnined time offset from a previous maximum peak.
6 Claims, 5 Drawing Sheets