Signaling of transmission settings in multi-user systems
First Claim
1. A transmitting apparatus for performing multi-user transmission to a plurality of receivers, said apparatus being adapted:
- a) to divide transmission settings of said multi-user transmission into a common signal information field containing common transmission settings adapted to channel conditions relevant for multiple ones of said receivers, and at least one user stream specific information field containing user stream specific information relevant only to a related user stream, wherein a designation of said receivers is determined from an order of appearance of MAC addresses of said receivers; and
b) to convey said common signal information and said user stream specific information in separate dedicated fields of a preamble portion of said multi-user transmission.
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Accused Products
Abstract
The present invention relates to a transmitting apparatus, a receiving apparatus, a system, a signal, and a method of multi-user transmission, wherein transmission settings are divided into common signal information, containing settings/information relevant for multiple receivers and user stream specific information, containing settings/information relevant only to a related user stream. Furthermore, the common signal information may comprise at least one of a duration of the longest user stream field and multi-user resource allocation field, so that the receivers know the mapping of user streams to receivers.
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Citations
16 Claims
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1. A transmitting apparatus for performing multi-user transmission to a plurality of receivers, said apparatus being adapted:
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a) to divide transmission settings of said multi-user transmission into a common signal information field containing common transmission settings adapted to channel conditions relevant for multiple ones of said receivers, and at least one user stream specific information field containing user stream specific information relevant only to a related user stream, wherein a designation of said receivers is determined from an order of appearance of MAC addresses of said receivers; and b) to convey said common signal information and said user stream specific information in separate dedicated fields of a preamble portion of said multi-user transmission. - View Dependent Claims (2, 3, 4, 5)
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6. A receiving apparatus for receiving a multi-user transmission signal, said apparatus being adapted:
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a) to detect, in separate dedicated fields of a preamble portion of said multi-user transmission, a common signal information and a user stream specific information, wherein a designation of receivers is determined from an order of appearance of MAC addresses of said receivers; and b) to derive from said common signal information common transmission settings adapted to channel conditions relevant for multiple receivers, and from said user stream specific information a dedicated user stream specific information relevant only to a corresponding one of said receiving apparatus. - View Dependent Claims (7, 8, 9, 10)
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11. A method, operable in a processing system, for performing multi-user transmission between a transmitter and a plurality of receivers, said method when executed on the processing system causes the processing system to:
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a) divide transmission settings of said multi-user transmission into common signal information, containing common transmission settings adapted to channel conditions relevant for multiple ones of said plurality of receivers, and user stream specific information containing user stream specific information relevant only to a related user stream, wherein a designation of said receivers is determined from an order of appearance of MAC addresses of said receivers; and b) convey said common signal information and said user stream specific information in separate dedicated fields of a preamble portion of said multi-user transmission.
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12. A system for multi-user transmission comprising at least one transmitting apparatus for performing multi-user transmission to a plurality of receivers, said at least one transmitting apparatus being adapted to:
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a) divide transmission settings of said multi-user transmission into common signal information containing common transmission settings adapted to channel conditions for multiple ones of said receivers, and user stream specific information containing user stream specific information relevant only to a related user stream, wherein a designation of said receivers is determined from an order of appearance of MAC addresses of said receivers; and b) convey said comment signal information and said user stream specific information in separate dedicated fields of a preamble portion of said multi-user transmission to at least one receiving apparatus. - View Dependent Claims (13)
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14. A computer-readable storage-medium that is not a transitory propagating signal or wave, comprising a program product wherein when the program product is run on a transmitting apparatus causes the transmitting apparatus to:
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a) divide transmission settings of a multi-user transmission into common signal information containing common transmission settings adapted to channel conditions for multiple ones of a plurality of receivers, and user stream specific information, which contains user stream specific information relevant only to a related user stream, wherein a designation of said receivers is determined from an order of appearance of MAC addresses of said receivers; and b) convey said common signal information and said user stream specific information in separate dedicated fields of a preamble portion of said multi-user transmission.
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15. A method for operating a receiver, the method comprising:
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a) detecting, in separate dedicated fields of a preamble portion of a multi-user transmission, a common signal information and a user stream specific information, wherein a designation of receivers is determined from an order of appearance of MAC addresses of said receivers; and b) deriving from said common signal information, common transmission settings adapted to channel conditions relevant for multiple receivers, and from said user stream specific information a dedicated user stream specific information relevant only to a corresponding one of said receiving apparatus.
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16. A computer-readable storage-medium that is not a transitory propagating signal or wave, comprising a program product wherein when the program product is run on a receiving apparatus causes the receiving apparatus to:
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a) detect, in separate dedicated fields of a preamble portion of said multi-user transmission, a common signal information and a user stream specific information, wherein a designation of receivers is determined from an order of appearance of MAC addresses of said receivers; and b) derive from said common signal information common transmission settings adapted to channel conditions relevant for multiple receivers, and from said user stream specific information a dedicated user stream specific information relevant only to a corresponding one of said receiving apparatus.
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Specification