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US 8,942,327 B2Granted
Modulation division multiple access
AssigneeApple Inc.
InventorsMing Jia, Jianglei Ma, Peiying Zhu, Wen Tong, Curt Dodd
Life of this patent
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AssigneeApple Inc.
InventorsMing Jia, Jianglei Ma, Peiying Zhu, Wen Tong, Curt Dodd
Estimating the term…
The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.
A method for transmitting information to at least one user element from at least one communication interface comprising:
A system for transmitting information at a network element, the system comprising:
Dependencies are inferred from the claim text.