Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-04-18
2006-04-18
Eng, George (Department: 2688)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S459000
Reexamination Certificate
active
07031731
ABSTRACT:
Methods for concurrent paging, in a cellular system having a number of users, where the users are paged to determine a location of each user, are disclosed. The paging from one cell to one of the users occurs within one of a number of time slots. The time slot in which one of the users is paged from one of the cells is a characteristic of that cell and that user. An array encompassing the totality of the characteristics time slots constitutes a search schedule. One method comprises minimizing a characteristic function of paging performance, the function depending on the search schedule and the probability of finding a user in a cell, and, determining, from the minimization of the characteristic function, the search schedule. Two other methods for determining a search schedule, which are more computationally efficient and which reduce the paging cost, the simple heuristic and the conditional probability heuristic, are disclosed.
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U.S. Provisional Appl. No. 60,344,286, filed Dec. 27, 2001. Title: Concurrent Search of Mobile Users in Cellular Networks. Applicants: Rung-Hung Gau et al.
Gau Rung-Hung
Haas Zygmunt J.
Burns & Levinson LLP
Cornell Research Foundation Inc.
Eng George
Erlich Jacob N.
Kim Wesley
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