System and method for cell search and selection in a wireless communication system
First Claim
1. A method, comprising:
- identifying a ranking criterion associated with selection of a cell in a wireless communication system;
determining whether the cell is known to belong to an associated Closed Subscriber Group (CSG) whitelist; and
selecting at least one of an offset or a hysteresis parameter to be applied to the ranking criterion based at least in part on a result of the determining, wherein a first ranking offset or hysteresis parameter is selected upon determining that the cell is known to belong to the associated CSG whitelist, and a second ranking offset or hysteresis parameter is selected upon determining that the cell is not known to belong to the associated CSG whitelist.
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Abstract
Systems and methodologies are described herein that facilitate improved cell search and selection in a wireless communication system. For example, a terminal as described herein can utilize one or more Closed Subscriber Group (CSG)-specific offset and/or hysteresis parameters as described herein to increase the amount of time on which the terminal is allowed to camp on a desirable cell. Additionally, specialized reselection timing can be employed as described herein to increase a delay associated with selecting a Home Node B (HNB) or Home Evolved Node B (HeNB) cell, thereby reducing power consumption associated with rapid cell reselection operations in a densely populated network environment. Further, a two-step reselection process can be performed as described herein in the context of selecting a frequency for cell reselection, thereby mitigating the effects of rapid reselection between cells and/or frequencies due to CSG cell prioritization.
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Citations
34 Claims
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1. A method, comprising:
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identifying a ranking criterion associated with selection of a cell in a wireless communication system; determining whether the cell is known to belong to an associated Closed Subscriber Group (CSG) whitelist; and selecting at least one of an offset or a hysteresis parameter to be applied to the ranking criterion based at least in part on a result of the determining, wherein a first ranking offset or hysteresis parameter is selected upon determining that the cell is known to belong to the associated CSG whitelist, and a second ranking offset or hysteresis parameter is selected upon determining that the cell is not known to belong to the associated CSG whitelist. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 33)
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10. A wireless communications apparatus, comprising:
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a memory that stores data relating to a network cell, a ranking metric associated with selection of the network cell, and a list of allowed Closed Subscriber Group (CSG) cells; and a processor configured to select at least one of an offset or a hysteresis parameter to be applied to the ranking metric associated with selection of the network cell based at least in part on a result of a determination of whether the network cell is known to belong to the list of allowed CSG cells, wherein a first ranking offset or hysteresis parameter is selected upon determining that the cell is known to belong to the associated CSG whitelist, and a second ranking offset or hysteresis parameter is selected upon determining that the cell is not known to belong to the associated CSG whitelist. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 34)
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19. An apparatus, comprising:
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means for identifying a ranking parameter associated with selection of a network cell; and means for selecting an offset or hysteresis parameter to apply to the ranking parameter for a given network cell based at least in part on a determination of Closed Subscriber Group (CSG) whitelist membership of the given network cell, wherein a first ranking offset or hysteresis parameter is selected upon determining that the cell is known to belong to the associated CSG whitelist, and a second ranking offset or hysteresis parameter is selected upon determining that the cell is not known to belong to the associated CSG whitelist. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A computer program product, comprising:
a non-transitory computer-readable medium, comprising; code for causing a computer to identify a ranking criterion associated with selection of a cell in a wireless communication system; and code for causing a computer to select an offset or hysteresis parameter to apply to the ranking criterion associated with selection of the cell based at least in part on a determination of Closed Subscriber Group (CSG) whitelist membership of the cell, wherein a first ranking offset or hysteresis parameter is selected upon determining that the cell is known to belong to the associated CSG whitelist, and a second ranking offset or hysteresis parameter is selected upon determining that the cell is not known to belong to the associated CSG whitelist. - View Dependent Claims (27, 28, 29, 30, 31, 32)
Specification