Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-01-24
2006-01-24
Perez-Gutierrez, Rafael (Department: 2686)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S436000, C455S442000, C455S446000, C370S331000
Reexamination Certificate
active
06990346
ABSTRACT:
A direct retrying method in a CDMA system based on macro diversity is provided. The conditions for direct retrying are determined. The number of the cells, which are previously requested for an admission, is obtained. The cells are determined by using the cell information designed by a cell network as an auxiliary decision. The selected cells having the same coverage are re-divided to obtain different sets of the cells. One cell set is selected from the different cell sets as a target cell set of the direct retrying, and the resources are requested from all of the cells in the target cell set of the direct retrying. If the admission of one cell is successful, the direct retrying is successful. The method significantly increases a success rate of direct retrying, decreases the number of the frequency switching times after the mobile station enters a dedicated channel, and optimizes the system performance.
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Dorsey & Whitney LLP
Huawei Technologies Co. Ltd.
Iqbal Khawar
Perez-Gutierrez Rafael
LandOfFree
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