Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2011-05-10
2011-05-10
Cumming, William D (Department: 2617)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C370S329000, C370S339000, C370S320000, C370S345000, C370S235000, C455S436000, C455S442000, C455S450000, C455S456300, C375S267000, C709S230000, C718S104000
Reexamination Certificate
active
07940740
ABSTRACT:
A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols, and transmitting the subframe. Upon receiving the subframe, a wireless device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing (e.g., time of arrival) information.
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Krishnamurthy Sandeep H.
Love Robert T.
Nimbalker Ajit
Stewart Kenneth A.
Zhuang Xiangyang
Cumming William D
Motorola Mobility, Inc.
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