Adaptive orthogonal scheduling for virtual MIMO system
First Claim
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1. A method for scheduling cooperative uplink transmissions comprising:
- a) determining channel transfer functions for a plurality of sub-carriers for each of a plurality of mobile terminals served by a base station;
b) identifying a select group of mobile terminals from the plurality of mobile terminals based on orthogonality of the channel transfer functions; and
c) assigning at least one sub-channel comprising ones of the plurality of sub-carriers to the select group of mobile terminals to be simultaneously used by each mobile terminal in the select group of mobile terminals.
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Abstract
A system and method for scheduling cooperative uplink transmissions in a virtual multiple input multiple output (MIMO) wireless communication environment are provided. More specifically, the present invention provides both random and channel aware orthogonal scheduling techniques for identifying a sub-set of N mobile terminals to provide cooperative uplink transmissions for each transmit time interval.
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Citations
22 Claims
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1. A method for scheduling cooperative uplink transmissions comprising:
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a) determining channel transfer functions for a plurality of sub-carriers for each of a plurality of mobile terminals served by a base station;
b) identifying a select group of mobile terminals from the plurality of mobile terminals based on orthogonality of the channel transfer functions; and
c) assigning at least one sub-channel comprising ones of the plurality of sub-carriers to the select group of mobile terminals to be simultaneously used by each mobile terminal in the select group of mobile terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for scheduling cooperative uplink transmissions comprising:
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grouping a plurality of mobile terminals into either a first group or a second group; and
scheduling ones of the plurality of mobile terminals in the first group for virtual multiple input multiple output (MIMO) operation and ones of the plurality of mobile terminals in the second group for 1×
N diversity operation, wherein N is greater than 1. - View Dependent Claims (16, 17, 18)
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19. A method for scheduling cooperative uplink transmissions comprising:
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a) identifying a group of mobile terminals to provide a cooperative uplink transmission by randomly selecting at least one of the group of mobile terminals; and
b) assigning at least one sub-channel comprising a plurality of sub-carriers to the group of mobile terminals to be simultaneously used by each mobile terminal in the group of mobile terminals. - View Dependent Claims (20, 21, 22)
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Specification