Methods and systems for providing enhanced position location in wireless communications
First Claim
1. A method for wireless communications, comprising:
- generating a pilot signal and a reference signal, the reference signal comprising a sequence of symbols known to an access terminal; and
transmitting the pilot signal and the reference signal in a time slot.
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Accused Products
Abstract
Embodiments disclosed herein relate to methods and systems for providing improved position-location (e.g., time-of-arrival) measurement and enhanced position location in wireless communication systems. In an embodiment, an access point may replace information (e.g., data) transmission by a “known” transmission (or “reference transmission”) at a predetermined time known to access terminals in the corresponding sectors. The access terminals may use the received reference transmission to perform a position-location measurement, and report back the measured information. The access point may also send a reference transmission on demand, e.g., in response to a request from an access terminal in need for a location-based service.
84 Citations
27 Claims
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1. A method for wireless communications, comprising:
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generating a pilot signal and a reference signal, the reference signal comprising a sequence of symbols known to an access terminal; and transmitting the pilot signal and the reference signal in a time slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A machine-readable medium storing software, wherein when the software is executed by at least one processor of a wireless communications apparatus, the software causes the wireless communications apparatus to perform steps, comprising:
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generating a pilot signal and a reference signal, the reference signal comprising a sequence of symbols known to an access terminal; and transmitting the pilot signal and the reference signal in a time slot. - View Dependent Claims (13, 14, 15)
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16. An apparatus adapted for wireless communications, comprising:
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means for generating a pilot signal and a reference signal, the reference signal comprising a sequence of symbols known to an access terminal; and means for transmitting the pilot signal and the reference signal in a time slot. - View Dependent Claims (17, 18, 19, 20, 21)
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22. An apparatus adapted for wireless communications, comprising:
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a reference-generating unit to generate a pilot signal and a reference signal, the reference signal comprising a sequence of symbols known to an access terminal; and a transmitting unit to transmit the pilot signal and the reference signal in a time slot. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification