FEMTO CELL SYSTEM SELECTION
First Claim
1. A method, comprising:
- scanning an Auxiliary Pilot Channel to identify auxiliary pilot channel information sent from a base station;
comparing the identified auxiliary pilot channel information with stored auxiliary pilot channel information to detect a characteristic of the base station; and
reading a broadcast channel that provides general base station identity related information based upon the detected characteristic of the base station.
1 Assignment
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Accused Products
Abstract
Systems and methodologies are described that facilitate identifying and/or selecting femto cells in a wireless communication environment. A mobile device can scan an Auxiliary Pilot Channel to detect auxiliary pilot channel information (e.g., a particular Walsh Code, . . . ) sent from a base station. Moreover, the identified auxiliary pilot channel information can be evaluated to detect a characteristic of the base station. For instance, the identified auxiliary pilot channel information can be compared with stored auxiliary pilot channel information (e.g., Walsh Code(s) included in a whitelist, blacklist, . . . ). Moreover, a Synchronization Channel can be read based upon the detected characteristic. Further, a Common Pilot Channel, for example, can be analyzed to search for pseudo-noise (PN) offset(s) reserved for femto cell base stations, and the scan of the Auxiliary Pilot Channel can be initiated in response to detecting at least one reserved PN offset.
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Citations
51 Claims
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1. A method, comprising:
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scanning an Auxiliary Pilot Channel to identify auxiliary pilot channel information sent from a base station; comparing the identified auxiliary pilot channel information with stored auxiliary pilot channel information to detect a characteristic of the base station; and reading a broadcast channel that provides general base station identity related information based upon the detected characteristic of the base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wireless communications apparatus, comprising:
at least one processor configured to; collect information sent by a base station via a physical layer broadcast channel; and detect at least one of a type of the base station, an association type supported by the base station, or a unique identity that distinguishes the base station from disparate base stations as a function of the collected information obtained via the physical layer broadcast channel. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An apparatus, comprising:
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means for recognizing a received Walsh Code from a scan of an Auxiliary Pilot Channel; means for evaluating the received Walsh Code to identify a characteristic of a broadcasting base station; and means for selecting to read a Synchronization (Sync) Channel as a function of the identified characteristic. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A computer program product, comprising:
a computer-readable medium comprising; code for causing at least one computer to analyze an Auxiliary Pilot Channel to identify auxiliary pilot channel information sent from a base station; code for causing at least one computer to compare the identified auxiliary pilot channel information with stored auxiliary pilot channel information to detect a characteristic of the base station; and code for causing at least one computer to read a broadcast channel that provides general base station identity related information based upon the detected characteristic of the base station. - View Dependent Claims (31, 32)
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33. An apparatus, comprising:
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an auxiliary pilot detection component that scans a physical layer broadcast channel to identify physical layer broadcast channel information sent by a base station; a comparison component that evaluates the received physical layer broadcast channel information to recognize at least one characteristic of the base station by comparing the received physical layer broadcast channel information to stored physical layer broadcast channel information; and a registration component that initiates registration with the base station as a function of the at least one characteristic. - View Dependent Claims (34)
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35. A method, comprising:
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selecting a Walsh Code from a set of Walsh Codes as a function of a characteristic of a base station; generating a unique Auxiliary Pilot based upon the selected Walsh Code; and broadcasting the unique Auxiliary Pilot to at least one mobile device to indicate the characteristic. - View Dependent Claims (36, 37, 38, 39)
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40. A wireless communications apparatus, comprising:
at least one processor configured to; generate an Auxiliary Pilot based upon a Walsh Code from a Walsh Code space assigned to a base station; and transmit the Auxiliary Pilot to one or more mobile devices to designate a characteristic of the base station as a function of the assigned Walsh Code. - View Dependent Claims (41, 42, 43)
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44. An apparatus, comprising:
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means for obtaining an assigned Walsh Code at a base station; means for yielding a unique Auxiliary Pilot as a function of the assigned Walsh Code; and means for transmitting the unique Auxiliary Pilot to one or more mobile devices to identify a characteristic of the base station. - View Dependent Claims (45, 46)
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47. A computer program product, comprising:
a computer-readable medium comprising; code for causing at least one computer to generate a unique Auxiliary Pilot based upon an assigned Walsh Code, the Walsh Code being assigned as a function of a characteristic of a base station; and code for causing at least one computer to broadcast the unique Auxiliary Pilot to at least one mobile device to indicate the characteristic. - View Dependent Claims (48, 49)
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50. An apparatus, comprising:
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a common pilot generation component that yields a pilot sequence with a particular pseudo-noise (PN) offset reserved for femto cell base stations for transmission from a base station to at least one mobile device; and an auxiliary pilot generation component that yields information related to the base station for transmission via a physical layer broadcast channel, the information specifies at least one of the base station is a femto cell base station, an association type of the base station, or a unique identifier of the base station. - View Dependent Claims (51)
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Specification