Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2008-07-09
2011-11-15
Moe, Aung S (Department: 2474)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S329000
Reexamination Certificate
active
08059555
ABSTRACT:
In a wireless communication system, a method and apparatus for closed loop transmission is disclosed. In accordance with the preferred embodiment of the present invention, a time frequency portion of an uplink frame is dynamically reserved as a sounding zone for uplink channel sounding. A first message is transmitted to a first subscriber station in a downlink frame assigning a time-frequency resource within the sounding zone, and a sounding waveform. Furthermore, a signal is received from the subscriber station within the assigned time-frequency resource, a partial channel response is determined from the received sounding signal, and the subsequent transmission to the subscriber station is tailored based on the at least partial channel response.
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Baum Kevin L.
Thomas Timothy A.
Vook Frederick W.
Zhuang Xiangyang
Moe Aung S
Motorola Mobility, Inc.
Rose Kerri
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