Abstract
In an orthogonal frequency division multiple access (OFDMA) system including at least one base station and at least one wireless transmit/receive unit (WTRU) sub-carriers are allocated for data transmissions to multiple access WTRUs where sub-carriers are allocated according to a consecutive sub-carrier allocation (CSA) type and a distributed sub-carrier allocation (DSA) type. Pilot signals with distributed pilot sub-carriers are transmitted and measured at each WTRU to obtain a channel quality metric for each pilot sub-carrier. Each WTRU sends feedback to the base station reporting channel quality based on the measured channel quality metrics. An allocation type is selected and adaptively switched according to channel variations in time and frequency domain.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
Not Available | 20/03/2007 | ISLD-200802-001 | INTERDIGITAL INC | No | Family Member |
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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US2007149249A1 | Not Available | 20/03/2007 | ISLD-200802-001 | INTERDIGITAL INC |
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WO2007078712A2 | Not Available | 20/03/2007 | ISLD-200802-001 | INTERDIGITAL INC |
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Yes | Family Member | |||
WO2007078712A3 | Not Available | 20/03/2007 | ISLD-200802-001 | INTERDIGITAL INC |
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Yes | Family Member | |||
TW200729775A | Not Available | 20/03/2007 | ISLD-200802-001 | INTERDIGITAL INC |
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No | Family Member |
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SUMMARY
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Patent number:TW200820705A
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.